chore: Update Go version to 1.25 in release workflow

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v4...v6)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.dockerignore

@@ -6,3 +6,8 @@ inbucket
 inbucket.exe
 swaks-tests
 target
+tags
+tags.*
+ui/dist
+ui/elm-stuff
+ui/node_modules

.envrc

@@ -0,0 +1 @@
+use nix

.gitattributes

@@ -1,6 +1,7 @@
 # Auto detect text files and perform LF normalization
-* text=auto
-*.raw  -text
+*        text=auto
+*.golden -text
+*.raw    -text
 
 # Custom for Visual Studio
 *.cs     diff=csharp

.github/dependabot.yml

@@ -0,0 +1,7 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/build-and-test.yml

@@ -0,0 +1,88 @@
+name: Build and Test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  linux-go-build:
+    runs-on: ubuntu-latest
+    name: Linux Go ${{ matrix.go }} build
+    strategy:
+      matrix:
+        go:
+          - '1.25'
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ matrix.go }}
+          check-latest: true
+      - name: Build and test
+        run: |
+          go build ./...
+          go test -race -coverprofile=profile.cov ./...
+      - name: Send coverage
+        uses: shogo82148/actions-goveralls@v1
+        with:
+          path-to-profile: profile.cov
+          flag-name: Linux-Go-${{ matrix.go }}
+          parallel: true
+
+  windows-go-build:
+    runs-on: windows-latest
+    name: Windows Go build
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.25'
+      - name: Build
+        run: go build ./...
+      - name: Test
+        run: go test -race -coverprofile="profile.cov" ./...
+      - name: Send coverage
+        uses: shogo82148/actions-goveralls@v1
+        with:
+          path-to-profile: profile.cov
+          flag-name: Windows-Go
+          parallel: true
+
+  ui-build:
+    runs-on: ubuntu-latest
+    name: UI Build
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: '20.x'
+          cache: 'yarn'
+          cache-dependency-path: ui/yarn.lock
+
+      - name: Build frontend
+        run: |
+          yarn install --frozen-lockfile --non-interactive
+          yarn run build
+        working-directory: ./ui
+
+  coverage:
+    needs:
+      - linux-go-build
+      - windows-go-build
+    name: Test Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: shogo82148/actions-goveralls@v1
+        with:
+          parallel-finished: true

.github/workflows/docker-build.yml

@@ -0,0 +1,71 @@
+name: Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request_review:
+    types:
+      - submitted
+  workflow_dispatch: # allow for manual run
+
+env:
+  REGISTRY_PUSH: ${{ github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v') }}
+
+jobs:
+  build:
+    name: 'Build Container'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            inbucket/inbucket
+            ghcr.io/${{ github.repository }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=sha
+            type=edge,branch=main
+          flavor: |
+            latest=auto
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: all
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        if: ${{ env.REGISTRY_PUSH == 'true' }}
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Login to GitHub Container Registry
+        if: ${{ env.REGISTRY_PUSH == 'true' }}
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64, linux/arm/v7
+          push: ${{ env.REGISTRY_PUSH == 'true' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/lint.yml

@@ -0,0 +1,17 @@
+name: Lint Go Code
+
+on:
+  push:
+
+jobs:
+  golangci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v6
+        with:
+          go-version: '1.25'
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v8
+        with:
+          version: latest

.github/workflows/release.yml

@@ -0,0 +1,55 @@
+name: Build and Release
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+jobs:
+  release:
+    name: 'Go Releaser'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.25'
+          check-latest: true
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: '20.x'
+          cache: 'yarn'
+          cache-dependency-path: ui/yarn.lock
+
+      - name: Build frontend
+        run: |
+          yarn install --frozen-lockfile --non-interactive
+          yarn run build
+        working-directory: ./ui
+
+      - name: Test build release
+        uses: goreleaser/goreleaser-action@v6
+        if: "!startsWith(github.ref, 'refs/tags/v')"
+        with:
+          distribution: goreleaser
+          version: "~> v2"
+          args: release --snapshot
+
+      - name: Build and publish release
+        uses: goreleaser/goreleaser-action@v6
+        if: "startsWith(github.ref, 'refs/tags/v')"
+        with:
+          distribution: goreleaser
+          version: "~> v2"
+          args: release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -3,6 +3,9 @@
 *.a
 *.so
 
+# Emacs messiness.
+*~
+
 # Folders
 _obj
 _test
@@ -21,13 +24,44 @@ _testmain.go
 
 *.exe
 
-# vim swp files
+# vim files
 *.swp
 *.swo
+tags
+tags.*
 
-# our binaries
+# Desktop Services Store on macOS
+.DS_Store
+
+/.direnv
+
+# Inbucket binaries
+/client
+/client.exe
 /inbucket
 /inbucket.exe
 /dist/**
 /cmd/client/client
 /cmd/client/client.exe
+/cmd/inbucket/inbucket
+/cmd/inbucket/inbucket.exe
+
+# Elm UI
+# elm-package generated files
+/ui/index.html
+/ui/elm-stuff
+/ui/tests/elm-stuff
+# elm-repl generated files
+repl-temp-*
+# Distribution
+/ui/dist/
+# Dependency directories
+/ui/node_modules
+/ui/.parcel-cache
+
+# Test lua files
+/inbucket.lua
+
+# IntelliJ
+.idea
+inbucket.iml

.golangci.yml

@@ -0,0 +1,82 @@
+version: "2"
+linters:
+  enable:
+    - asasalint
+    - asciicheck
+    - bidichk
+    - bodyclose
+    - containedctx
+    - contextcheck
+    - copyloopvar
+    - decorder
+    - durationcheck
+    - errchkjson
+    - errname
+    - ginkgolinter
+    - gocheckcompilerdirectives
+    - gochecksumtype
+    - gocritic
+    - goheader
+    - gomoddirectives
+    - gomodguard
+    - goprintffuncname
+    - gosmopolitan
+    - grouper
+    - importas
+    - inamedparam
+    - interfacebloat
+    - loggercheck
+    - makezero
+    - mirror
+    - misspell
+    - musttag
+    - nilerr
+    - noctx
+    - nolintlint
+    - nosprintfhostport
+    - perfsprint
+    - prealloc
+    - predeclared
+    - promlinter
+    - protogetter
+    - reassign
+    - rowserrcheck
+    - sloglint
+    - staticcheck
+    - tagliatelle
+    - testableexamples
+    - testifylint
+    - thelper
+    - tparallel
+    - unparam
+    - usestdlibvars
+    - usetesting
+    - wastedassign
+    - whitespace
+    - zerologlint
+  settings:
+    tagliatelle:
+      case:
+        rules:
+          json: kebab
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gofmt
+    - goimports
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

.goreleaser.yml

@@ -1,16 +1,21 @@
+version: 2 # goreleaser version
 project_name: inbucket
+
 release:
   github:
-    owner: jhillyerd
+    owner: inbucket
     name: inbucket
   name_template: '{{.Tag}}'
-brew:
-  commit_author:
-    name: goreleaserbot
-    email: goreleaser@carlosbecker.com
-  install: bin.install ""
+
+before:
+  hooks:
+    - go mod download
+
 builds:
-  - binary: inbucket
+  - id: inbucket
+    binary: inbucket
+    env:
+      - CGO_ENABLED=0
     goos:
       - darwin
       - freebsd
@@ -18,11 +23,16 @@ builds:
       - windows
     goarch:
       - amd64
+      - arm
+      - arm64
     goarm:
-      - "6"
-    main: .
+      - "7"
+    main: ./cmd/inbucket
     ldflags: -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.Date}}
-  - binary: client
+  - id: inbucket-client
+    binary: inbucket-client
+    env:
+      - CGO_ENABLED=0
     goos:
       - darwin
       - freebsd
@@ -30,31 +40,48 @@ builds:
       - windows
     goarch:
       - amd64
+      - arm
+      - arm64
     goarm:
-      - "6"
+      - "7"
     main: ./cmd/client
     ldflags: -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.Date}}
-archive:
-  format: tar.gz
-  wrap_in_directory: true
-  name_template: '{{ .Binary }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{
-    .Arm }}{{ end }}'
-  format_overrides:
-    - goos: windows
-      format: zip
-  files:
-    - LICENSE*
-    - README*
-    - CHANGELOG*
-    - inbucket.bat
-    - etc/**/*
-    - themes/**/*
-fpm:
-  bindir: /usr/local/bin
-snapshot:
-  name_template: SNAPSHOT-{{ .Commit }}
+
+archives:
+  - id: tarball
+    formats: tar.gz
+    wrap_in_directory: true
+    format_overrides:
+      - goos: windows
+        formats: zip
+    files:
+      - LICENSE*
+      - README*
+      - CHANGELOG*
+      - etc/**
+      - ui/dist/**
+      - ui/greeting.html
+
+nfpms:
+  - formats:
+      - deb
+      - rpm
+    vendor: inbucket.org
+    homepage: https://www.inbucket.org/
+    maintainer: github@hillyerd.com
+    description: All-in-one disposable webmail service.
+    license: MIT
+    contents:
+      - src: "ui/dist/**"
+        dst: "/usr/share/inbucket/ui"
+      - src: "etc/linux/inbucket.service"
+        dst: "/lib/systemd/system/inbucket.service"
+        type: config|noreplace
+      - src: "ui/greeting.html"
+        dst: "/etc/inbucket/greeting.html"
+        type: config|noreplace
+
 checksum:
   name_template: '{{ .ProjectName }}_{{ .Version }}_checksums.txt'
+
 dist: dist
-sign:
-  artifacts: none

.luarc.json

@@ -0,0 +1,9 @@
+{
+	"runtime.version": "Lua 5.1",
+	"diagnostics": {
+		"globals": [
+			"inbucket",
+			"smtp"
+		]
+	}
+}

.travis.yml

@@ -1,19 +0,0 @@
-language: go
-sudo: false
-
-env:
-  - DEPLOY_WITH_MAJOR="1.9"
-
-before_script:
-  - go get github.com/golang/lint/golint
-
-go:
-  - 1.9.x
-  - "1.10"
-
-deploy:
-  provider: script
-  script: etc/travis-deploy.sh
-  on:
-    tags: true
-    branch: master

CHANGELOG.md

@@ -4,6 +4,281 @@ Change Log
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [Unreleased]
+
+
+## [v3.1.0] - 2025-07-27
+
+### Added
+- Note in logs that a missing Lua script is not an error (#575)
+
+### Fixed
+- Accept and handle emails sent with an empty 821.From (#561)
+
+
+## [v3.1.0-beta3] - 2024-11-02
+
+### Added
+- Lua scripting additions:
+  - Add `SMTPSession` and `BeforeRcptToAccepted` event (#541)
+  - Add `SMTPResponse` type for extensions (#539)
+  - Add `RemoteAddr` to `SMTPSession` (#548)
+- Context support for REST client (#496)
+
+### Fixed
+- Rename Lua `BeforeMailAccepted`, change args (#547)
+- pop3: Prevent STLS cmd triggered crashes (#516)
+- ui: date-format version, fixes yarn build (#508)
+- rework client example to omit `log.Fatal`, breaks defer (#489)
+- Rest Client: Allow relative URLs (#477)
+
+
+## [v3.1.0-beta2] - 2024-02-05
+
+### Added
+- Reject mail by origin domain: `INBUCKET_SMTP_REJECTORIGINDOMAINS` (#375)
+  - Wildcard support (#412)
+- Version flag for `inbucket` cmd (#385)
+- STLS support for POP3 (#384)
+- ForceTLS flag for SMTP (#402)
+- Lua scripting additions:
+  - `logger` API for Lua (#407)
+  - `before.message_stored` handler (#417, #418)
+- `$` is replaced with `:` in filestore paths, for `D:\...` syntax (#449)
+- REST Client `transport` support (#463)
+
+### Fixed
+- UI & Storage paths in systemd service file (#393)
+- Web UI will redirect from `prefix` to `prefix/` (#397)
+- Include inlines when listing attachments (#398)
+- Fail Inbucket startup if unable to create storage dir (#448)
+- Close directory file handles immediately, fixes Windows locking (#457)
+
+
+## [v3.1.0-beta1] - 2023-02-28
+
+### Added
+- Monitor tab updates when messages are deleted (#337)
+- Initial framework for extensions
+- Initial Lua scripting implementation, supporting events:
+  - `after.message_deleted`
+  - `after.message_stored`
+  - `before.mail_accepted`
+- Provide `http` and `json` modules for Lua scripts
+
+### Fixed
+- Support for IP address as domain in RCPT TO (#285)
+
+
+## [v3.0.4] - 2022-10-02
+
+### Fixed
+- More flexible support of `AUTH=<>` FROM parameter (#291)
+
+
+## [v3.0.3] - 2022-08-07
+
+### Fixed
+- Support for `AUTH=<>` FROM parameter (#284)
+
+
+## [v3.0.2] - 2022-07-04
+
+Note: We had to abandon the 3.0.1 release, see the blog post [What happened to
+3.0?](https://www.inbucket.org/news/2022/05/whathappenedtothree.html) for
+details.
+
+### Changed
+- arm Docker builds now rely on amd64 frontend build stage
+- Frontend build migrated from npm+webpack to yarn+parcel, node 16
+
+
+## [v3.0.1-rc2] - 2022-01-23
+
+### Added
+- Builds for arm7 and arm64 platforms
+
+### Changed
+- Abandoned git-flow process, the `master` branch renamed to `main`
+
+
+## [v3.0.1-rc1] - 2022-01-17
+
+### Fixed
+- GitHub built packages (rpm, deb, tarball) no longer missing UI files (#250)
+
+### Changed
+- Update Go dependencies
+- Update NPM dependencies
+
+
+## [v3.0.0] - 2021-09-19
+
+Unchanged from rc4.
+
+
+## [v3.0.0-rc4] - 2021-08-22
+
+### Fixed
+- Various MIME header decoding improvements
+
+### Changed
+- Bump Go version to 1.17 (#233)
+
+
+## v3.0.0-rc3 - 2021-08-01
+
+Unchanaged from 3.0.0-rc2.  This release is to update our build automation and
+tags for Docker Hub and ghcr.io.
+
+
+## [v3.0.0-rc2] - 2021-07-31
+
+### Added
+- Support for SMTP AUTH (#197, thanks makarchuk)
+- Dark mode support (#218, thanks nerones)
+
+### Fixed
+- Prevent potential click jacking (#190, thanks stuartskelton)
+- Error on 8 character long SMTP commands (#221)
+- Allow empty username and password during AUTH (#225)
+
+
+## [v3.0.0-rc1] - 2020-09-24
+
+### Added
+- Refresh button to reload mailbox contents
+- Improved keyboard (tab) focus highlights
+
+### Changed
+- The UI now includes the Open Sans webfont instead of relying on browser/OS
+  fonts
+
+
+## [v3.0.0-beta3] - 2020-09-04
+
+### Added
+- Docker `HEALTHCHECK`
+- Mouse-out delay to improve pop-up menu navigation
+- Support for configurable URL base path with `INBUCKET_WEB_BASEPATH`
+
+### Changed
+- Updated frontend and backend dependencies, Docker image base
+
+### Fixed
+- Improved layout on mobile and wide displays
+- Prevent unexpected input for modal dialogs
+- Allow empty SMTP `MAIL FROM:<>`
+
+
+## [v3.0.0-beta2] - 2019-08-17
+
+### Added
+- Ability to name mailboxes after domain of email recipient, set via
+  `INBUCKET_MAILBOXNAMING`, thanks MatthewJohn.
+
+### Changed
+- Updated JavaScript dependencies.
+- Updated Go dependencies.
+- Updated Docker build: Go to 1.12, and Alpine Linux to 3.10
+
+### Fixed
+- URLs to view/download attachments from REST API, #138
+- Support for late EHLO, #141
+
+
+## [v3.0.0-beta1] - 2019-03-14
+
+### Added
+- `posix-millis` field to REST message and header responses for easier date
+  parsing.
+
+### Changed
+- Rewrote the user interface from scratch, it's now an Elm powered single page
+  application.
+- Moved the Inbucket repository to its own GitHub organization.
+- Update to enmime v0.5.0
+
+
+## v2.1.0 - 2018-12-15
+
+No change from beta1.
+
+
+## [v2.1.0-beta1] - 2018-10-31
+
+### Added
+- Use Go 1.11 modules for reproducible builds.
+- SMTP TLS support (thanks kingforaday.)
+- `INBUCKET_WEB_PPROF` configuration option for performance profiling.
+- Godoc example for the REST API client.
+
+### Changed
+- Docker build now uses Go 1.11 and Alpine 3.8
+
+### Fixed
+- Render UTF-8 addresses correctly in both REST API and Web UI.
+- Memory storage now correctly returns the newest message when asked for ID
+  `latest`.
+
+
+## [v2.0.0] - 2018-05-05
+
+### Changed
+- Corrected docs for INBUCKET_STORAGE_PARAMS (thanks evilmrburns.)
+- Disabled color log output on Windows, doesn't work there.
+
+
+## [v2.0.0-rc1] - 2018-04-07
+
+### Added
+- Inbucket is now configured using environment variables instead of a config
+  file.
+- In-memory storage option, best for small installations and desktops.  Will be
+  used by default.
+- Storage type is now displayed on Status page.
+- Store size is now calculated during retention scan and displayed on the Status
+  page.
+- Debian `.deb` package generation to release process.
+- RedHat `.rpm` package generation to release process.
+- Message seen flag in REST and Web UI so you can see which messages have
+  already been read.
+- Recipient domain accept policy; Inbucket can now reject mail to specific
+  domains.
+- Configurable support for identifying a mailbox by full email address instead
+  of just the local part (username).
+- Friendly URL support: `<inbucket-url>/<mailbox>` will redirect your browser to
+  that mailbox.
+
+### Changed
+- Massive refactor of back-end code.  Inbucket should now be both easier and
+  more enjoyable to work on.
+- Changes to file storage format, will require pre-2.0 mail store directories to
+  be deleted.
+- Renamed `themes` directory to `ui` and eliminated the intermediate `bootstrap`
+  directory.
+- Docker build:
+  - Uses the same default ports as other builds; smtp:2500 http:9000 pop3:1100
+  - Uses volume `/config` for `greeting.html`
+  - Uses volume `/storage` for mail storage
+- Log output is now structured, and will be output as JSON with the `-logjson`
+  flag; which is enabled by default for the Docker container.
+- SMTP and POP3 network tracing is no longer logged regardless of level, but can
+  be sent to stdout via `-netdebug` flag.
+- Replaced store/nostore config variables with a storage policy that mirrors the
+  domain accept policy.
+
+### Removed
+- No longer support SIGHUP or log file rotation.
+
+
+## [v1.3.1] - 2018-03-10
+
+### Fixed
+- Adding additional locking during message delivery to prevent race condition
+  that could lose messages.
+
+
 ## [v1.3.0] - 2018-02-28
 
 ### Added
@@ -13,6 +288,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 - Reverse message display sort order in the UI; now newest first.
 
+
 ## [v1.2.0] - 2017-12-27
 
 ### Changed
@@ -22,7 +298,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - `rest/client` types `MessageHeader` and `Message` with convenience methods;
   provides a more natural API
 - Powerful command line REST
-  [client](https://github.com/jhillyerd/inbucket/wiki/cmd-client)
+  [client](https://github.com/inbucket/inbucket/wiki/cmd-client)
 - Allow use of `latest` as a message ID in REST calls
 
 ### Changed
@@ -31,14 +307,15 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   types
 - Fixed panic when `monitor.history` set to 0
 
+
 ## [v1.2.0-rc1] - 2017-01-29
 
 ### Added
 - Storage of `To:` header in messages (likely breaks existing datastores)
 - Attachment list to [GET message
-  JSON](https://github.com/jhillyerd/inbucket/wiki/REST-GET-message)
+  JSON](https://github.com/inbucket/inbucket/wiki/REST-GET-message)
 - [Go client for REST
-  API](https://godoc.org/github.com/jhillyerd/inbucket/rest/client)
+  API](https://godoc.org/github.com/inbucket/inbucket/rest/client)
 - Monitor feature: lists messages as they arrive, regardless of their
   destination mailbox
 - Make `@inbucket` mailbox prompt configurable
@@ -57,6 +334,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Allow increased local-part length of 128 chars for Mailgun
 - RedHat and Ubuntu now use systemd instead of legacy init systems
 
+
 ## [v1.1.0] - 2016-09-03
 
 ### Added
@@ -65,6 +343,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 - Log and continue when unable to delete oldest message during cap enforcement
 
+
 ## [v1.1.0-rc2] - 2016-03-06
 
 ### Added
@@ -75,6 +354,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Shutdown hang in retention scanner
 - Display empty subject as `(No Subject)`
 
+
 ## [v1.1.0-rc1] - 2016-03-04
 
 ### Added
@@ -89,6 +369,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - RESTful API moved to `/api/v1` base URI
 - More graceful shutdown on Ctrl-C or when errors encountered
 
+
 ## [v1.0] - 2014-04-14
 
 ### Added
@@ -97,29 +378,52 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Add Link button to messages, allows for directing another person to a
   specific message.
 
-[Unreleased]:  https://github.com/jhillyerd/inbucket/compare/master...develop
-[v1.3.0]:      https://github.com/jhillyerd/inbucket/compare/v1.2.0...v1.3.0
-[v1.2.0]:      https://github.com/jhillyerd/inbucket/compare/1.2.0-rc2...1.2.0
-[v1.2.0-rc2]:  https://github.com/jhillyerd/inbucket/compare/1.2.0-rc1...1.2.0-rc2
-[v1.2.0-rc1]:  https://github.com/jhillyerd/inbucket/compare/1.1.0...1.2.0-rc1
-[v1.1.0]:      https://github.com/jhillyerd/inbucket/compare/1.1.0-rc2...1.1.0
-[v1.1.0-rc2]:  https://github.com/jhillyerd/inbucket/compare/1.1.0-rc1...1.1.0-rc2
-[v1.1.0-rc1]:  https://github.com/jhillyerd/inbucket/compare/1.0...1.1.0-rc1
-[v1.0]:        https://github.com/jhillyerd/inbucket/compare/1.0-rc1...1.0
+
+[Unreleased]:   https://github.com/inbucket/inbucket/compare/v3.1.0...main
+[v3.1.0]: https://github.com/inbucket/inbucket/compare/v3.1.0-beta3...v3.1.0
+[v3.1.0-beta3]: https://github.com/inbucket/inbucket/compare/v3.1.0-beta2...v3.1.0-beta3
+[v3.1.0-beta2]: https://github.com/inbucket/inbucket/compare/v3.1.0-beta1...v3.1.0-beta2
+[v3.1.0-beta1]: https://github.com/inbucket/inbucket/compare/v3.0.4...v3.1.0-beta1
+[v3.0.4]:       https://github.com/inbucket/inbucket/compare/v3.0.3...v3.0.4
+[v3.0.3]:       https://github.com/inbucket/inbucket/compare/v3.0.2...v3.0.3
+[v3.0.2]:       https://github.com/inbucket/inbucket/compare/v3.0.1-rc2...v3.0.2
+[v3.0.1-rc2]:   https://github.com/inbucket/inbucket/compare/v3.0.1-rc1...v3.0.1-rc2
+[v3.0.1-rc1]:   https://github.com/inbucket/inbucket/compare/v3.0.0...v3.0.1-rc1
+[v3.0.0]:       https://github.com/inbucket/inbucket/compare/v3.0.0-rc4...v3.0.0
+[v3.0.0-rc4]:   https://github.com/inbucket/inbucket/compare/v3.0.0-rc2...v3.0.0-rc4
+[v3.0.0-rc2]:   https://github.com/inbucket/inbucket/compare/v3.0.0-rc1...v3.0.0-rc2
+[v3.0.0-rc1]:   https://github.com/inbucket/inbucket/compare/v3.0.0-beta3...v3.0.0-rc1
+[v3.0.0-beta3]: https://github.com/inbucket/inbucket/compare/v3.0.0-beta2...v3.0.0-beta3
+[v3.0.0-beta2]: https://github.com/inbucket/inbucket/compare/v3.0.0-beta1...v3.0.0-beta2
+[v3.0.0-beta1]: https://github.com/inbucket/inbucket/compare/v2.1.0...v3.0.0-beta1
+[v2.1.0-beta1]: https://github.com/inbucket/inbucket/compare/v2.0.0...v2.1.0-beta1
+[v2.0.0]:       https://github.com/inbucket/inbucket/compare/v2.0.0-rc1...v2.0.0
+[v2.0.0-rc1]:   https://github.com/inbucket/inbucket/compare/v1.3.1...v2.0.0-rc1
+[v1.3.1]:       https://github.com/inbucket/inbucket/compare/v1.3.0...v1.3.1
+[v1.3.0]:       https://github.com/inbucket/inbucket/compare/v1.2.0...v1.3.0
+[v1.2.0]:       https://github.com/inbucket/inbucket/compare/1.2.0-rc2...1.2.0
+[v1.2.0-rc2]:   https://github.com/inbucket/inbucket/compare/1.2.0-rc1...1.2.0-rc2
+[v1.2.0-rc1]:   https://github.com/inbucket/inbucket/compare/1.1.0...1.2.0-rc1
+[v1.1.0]:       https://github.com/inbucket/inbucket/compare/1.1.0-rc2...1.1.0
+[v1.1.0-rc2]:   https://github.com/inbucket/inbucket/compare/1.1.0-rc1...1.1.0-rc2
+[v1.1.0-rc1]:   https://github.com/inbucket/inbucket/compare/1.0...1.1.0-rc1
+[v1.0]:         https://github.com/inbucket/inbucket/compare/1.0-rc1...1.0
 
 
 ## Release Checklist
 
-1.  Create release branch: `git flow release start 1.x.0`
+1.  Create a release branch
 2.  Update CHANGELOG.md:
     - Ensure *Unreleased* section is up to date
-    - Rename *Unreleased* section to release name and date.
+    - Rename *Unreleased* section to release name and date
     - Add new GitHub `/compare` link
+    - Update previous tag version for *Unreleased* 
 3.  Run tests
-4.  Test cross-compile: `goreleaser --snapshot`
-5.  Commit changes and merge release: `git flow release finish`
-6.  Push tags and wait for https://travis-ci.org/jhillyerd/inbucket build to
-    complete
-7.  Update `binary_versions` option in `inbucket-site/_config.yml`
+4.  Update goreleaser, and then test cross-compile: `goreleaser release --snapshot --clean`
+5.  Commit changes and merge release PR into main
+6.  Create new release via GitHub, use CHANGELOG release notes, tag `vX.Y.Z`
+7.  Push tags and wait for
+    [GitHub actions](https://github.com/inbucket/inbucket/actions) to complete
+    -- it will add compiled release assets
 
 See http://keepachangelog.com/ for additional instructions on how to update this file.

CONTRIBUTING.md

@@ -1,11 +1,8 @@
-How to Contribute
-=================
+# How to Contribute
 
 Inbucket encourages third-party patches. It's valuable to know how other
 developers are using the product.
 
-**tl;dr:** File pull requests against the `develop` branch, not `master`!
-
 
 ## Getting Started
 
@@ -17,28 +14,18 @@ to provide validation and/or guidance on your suggested approach.
 
 ## Making Changes
 
-Inbucket uses [git-flow] with default options.  If you have git-flow installed,
-you can run `git flow feature start <topic branch name>`.
-
-Without git-flow, create a topic branch from where you want to base your work:
-  - This is usually the `develop` branch, example command:
-    `git checkout origin/develop -b <topic branch name>`
-  - Only target the `master` branch if the issue is already resolved in
-    `develop`.
+Inbucket follows the regular GitHub pattern. Create a topic branch from where
+you want to base your work:
 
 Once you are on your topic branch:
 
 1. Make commits of logical units.
 2. Add unit tests to exercise your changes.
-3. Run the updated code through `go fmt` and `go vet`.
-4. Ensure the code builds and tests with the following commands:
-  - `go clean ./...`
-  - `go build ./...`
-  - `go test ./...`
+3. Run `make` to test, vet and confirm your code is formatted correctly.
+   If you do not have Make installed, please perform these steps manually,
+   otherwise your PR will not pass our checks.
 
 
 ## Thanks
 
 Thank you for contributing to Inbucket!
-
-[git-flow]: https://github.com/nvie/gitflow

Dockerfile

@@ -1,25 +1,58 @@
-# Docker build file for Inbucket, see https://www.docker.io/
-# Inbucket website: http://www.inbucket.org/
+# Docker build file for Inbucket: https://www.inbucket.org/
 
-FROM golang:1.9-alpine
-MAINTAINER James Hillyerd, @jameshillyerd
+### Build frontend
+# Due to no official elm compiler for arm; build frontend with amd64.
+FROM --platform=linux/amd64 node:20 AS frontend
+RUN npm install -g node-gyp
+WORKDIR /build
+COPY . .
+WORKDIR /build/ui
+RUN rm -rf .parcel-cache dist elm-stuff node_modules
+RUN yarn install --frozen-lockfile --non-interactive
+RUN yarn run build
 
-# Configuration (WORKDIR doesn't support env vars)
-ENV INBUCKET_SRC $GOPATH/src/github.com/jhillyerd/inbucket
-ENV INBUCKET_HOME /opt/inbucket
-WORKDIR $INBUCKET_HOME
-ENTRYPOINT ["/con/context/start-inbucket.sh"]
-CMD ["/con/configuration/inbucket.conf"]
+### Build backend
+FROM golang:1.25-alpine3.22 AS backend
+RUN apk add --no-cache --virtual .build-deps g++ git make
+WORKDIR /build
+COPY . .
+ENV CGO_ENABLED=0
+RUN make clean deps
+RUN go build -o inbucket \
+  -ldflags "-X 'main.version=$(git describe --tags --always)' -X 'main.date=$(date -Iseconds)'" \
+  -v ./cmd/inbucket
+
+### Run in minimal image
+FROM alpine:3.22
+RUN apk --no-cache add tzdata
+WORKDIR /opt/inbucket
+RUN mkdir bin defaults ui
+COPY --from=backend /build/inbucket bin
+COPY --from=frontend /build/ui/dist ui
+COPY etc/docker/defaults/greeting.html defaults
+COPY etc/docker/defaults/start-inbucket.sh /
+
+# Configuration
+ENV INBUCKET_SMTP_DISCARDDOMAINS=bitbucket.local
+ENV INBUCKET_SMTP_TIMEOUT=30s
+ENV INBUCKET_POP3_TIMEOUT=30s
+ENV INBUCKET_WEB_GREETINGFILE=/config/greeting.html
+ENV INBUCKET_WEB_COOKIEAUTHKEY=secret-inbucket-session-cookie-key
+ENV INBUCKET_WEB_UIDIR=ui
+ENV INBUCKET_STORAGE_TYPE=file
+ENV INBUCKET_STORAGE_PARAMS=path:/storage
+ENV INBUCKET_STORAGE_RETENTIONPERIOD=72h
+ENV INBUCKET_STORAGE_MAILBOXMSGCAP=300
+
+# Healthcheck
+HEALTHCHECK --interval=5s --timeout=5s --retries=3 CMD /bin/sh -c 'wget localhost:$(echo ${INBUCKET_WEB_ADDR:-0.0.0.0:9000}|cut -d: -f2) -q -O - >/dev/null'
 
 # Ports: SMTP, HTTP, POP3
-EXPOSE 10025 10080 10110
+EXPOSE 2500 9000 1100
 
-# Persistent Volumes, following convention at:
-#   https://github.com/docker/docker/issues/9277
-# NOTE /con/context is also used, not exposed by default
-VOLUME /con/configuration
-VOLUME /con/data
+# Persistent Volumes
+VOLUME /config
+VOLUME /storage
 
-# Build Inbucket
-COPY . $INBUCKET_SRC/
-RUN "$INBUCKET_SRC/etc/docker/install.sh"
+ENTRYPOINT ["/start-inbucket.sh"]
+CMD ["-logjson"]

Makefile

@@ -1,26 +1,28 @@
-PKG := inbucket
-SHELL := /bin/sh
+SHELL = /bin/sh
 
 SRC := $(shell find . -type f -name '*.go' -not -path "./vendor/*")
-PKGS := $$(go list ./... | grep -v /vendor/)
+PKGS := $(shell go list ./... | grep -v /vendor/)
 
-.PHONY: all build clean fmt install lint simplify test
+.PHONY: all build clean fmt lint reflex simplify test
 
-all: test lint build
+commands = client inbucket
+
+all: clean test lint build
+
+$(commands): %: cmd/% $(SRC)
+	go build ./$<
 
 clean:
-	go clean
+	go clean $(PKGS)
+	rm -f $(commands)
+	rm -rf dist
 
 deps:
 	go get -t ./...
 
-build: clean deps
-	go build
+build: $(commands)
 
-install: build
-	go install
-
-test: clean deps
+test:
 	go test -race ./...
 
 fmt:
@@ -30,6 +32,12 @@ simplify:
 	@gofmt -s -l -w $(SRC)
 
 lint:
+	@echo "gofmt check..."
 	@test -z "$(shell gofmt -l . | tee /dev/stderr)" || echo "[WARN] Fix formatting issues with 'make fmt'"
-	@golint -set_exit_status $${PKGS}
-	@go vet $${PKGS}
+	@echo "golint check..."
+	@golint -set_exit_status $(PKGS)
+	@echo "go vet check..."
+	@go vet $(PKGS)
+
+reflex:
+	reflex -r '\.go$$' -- sh -c 'echo; date; echo; go test ./... && echo ALL PASS'

README.md

@@ -1,16 +1,21 @@
-Inbucket 
-=============================================================================
-[![Build Status](https://travis-ci.org/jhillyerd/inbucket.png?branch=master)][Build Status]
+![Build Status](https://github.com/inbucket/inbucket/actions/workflows/build-and-test.yml/badge.svg)
+![Docker Image](https://github.com/inbucket/inbucket/actions/workflows/docker-build.yml/badge.svg)
+
+# Inbucket
 
 Inbucket is an email testing service; it will accept messages for any email
-address and make them available via web, REST and POP3.  Once compiled,
-Inbucket does not have any external dependencies (HTTP, SMTP, POP3 and storage
-are all built in).
+address and make them available via web, REST and POP3 interfaces.  Once
+compiled, Inbucket does not have any external dependencies - HTTP, SMTP, POP3
+and storage are all built in.
+
+A Go client for the REST API is available in
+`github.com/inbucket/inbucket/pkg/rest/client` - [Go API docs]
 
 Read more at the [Inbucket Website]
 
 ![Screenshot](http://www.inbucket.org/images/inbucket-ss1.png "Viewing a message")
 
+
 ## Development Status
 
 Inbucket is currently production quality: it is being used for real work.
@@ -19,45 +24,73 @@ Please see the [Change Log] and [Issues List] for more details.  If you'd like
 to contribute code to the project check out [CONTRIBUTING.md].
 
 
-## Homebrew Tap
+## Docker
 
-Inbucket has an OS X [Homebrew] tap available as [jhillyerd/inbucket][Homebrew Tap],
-see the `README.md` there for installation instructions.
+Inbucket has automated [Docker Image] builds via Docker Hub.  The `latest` tag
+tracks our tagged releases, and `edge` tracks our potentially unstable
+`main` branch.
 
+Start the docker image by running:
+
+```
+docker run -d --name inbucket -p 9000:9000 -p 2500:2500 -p 1100:1100 inbucket/inbucket
+```
+
+Then point your browser to [localhost:9000](http://localhost:9000/)
 
 ## Building from Source
 
-You will need a functioning [Go installation][Google Go] for this to work.
+You will need functioning [Go] and [Node.js] installations for this to work.
 
-Grab the Inbucket source code and compile the daemon:
+```sh
+git clone https://github.com/inbucket/inbucket.git
+cd inbucket/ui
+yarn install
+yarn build
+cd ..
+go build ./cmd/inbucket
+```
 
-    go get -v github.com/jhillyerd/inbucket
+For more information on building and development flows, check out the
+[Development Quickstart] page of our wiki.
 
-Edit etc/inbucket.conf and tailor to your environment.  It should work on most
-Unix and OS X machines as is.  Launch the daemon:
+### Configure and Launch
 
-    $GOPATH/bin/inbucket $GOPATH/src/github.com/jhillyerd/inbucket/etc/inbucket.conf
+Inbucket reads its configuration from environment variables, but comes with
+reasonable defaults built-in.  It should work on most Unix and OS X machines as
+is.  Launch the daemon:
+
+```sh
+./inbucket
+```
 
 By default the SMTP server will be listening on localhost port 2500 and
 the web interface will be available at [localhost:9000](http://localhost:9000/).
 
-The Inbucket website has a more complete guide to
-[installing from source][From Source]
+See doc/[config.md] for more information on configuring Inbucket, but you will
+likely find the [Configurator] tool the easiest way to generate a configuration.
 
 
 ## About
 
-Inbucket is written in [Google Go]
+Inbucket is written in [Go] and [Elm].
 
 Inbucket is open source software released under the MIT License.  The latest
-version can be found at https://github.com/jhillyerd/inbucket
+version can be found at https://github.com/inbucket/inbucket
 
-[Build Status]:     https://travis-ci.org/jhillyerd/inbucket
-[Change Log]:       https://github.com/jhillyerd/inbucket/blob/master/CHANGELOG.md
-[CONTRIBUTING.md]:  https://github.com/jhillyerd/inbucket/blob/develop/CONTRIBUTING.md
-[From Source]:      http://www.inbucket.org/installation/from-source.html
-[Google Go]:        http://golang.org/
-[Homebrew]:         http://brew.sh/
-[Homebrew Tap]:     https://github.com/jhillyerd/homebrew-inbucket
-[Inbucket Website]: http://www.inbucket.org/
-[Issues List]:      https://github.com/jhillyerd/inbucket/issues?state=open
+[Build Status]:           https://travis-ci.org/inbucket/inbucket
+[Change Log]:             https://github.com/inbucket/inbucket/blob/main/CHANGELOG.md
+[config.md]:              https://github.com/inbucket/inbucket/blob/main/doc/config.md
+[Configurator]:           https://www.inbucket.org/configurator/
+[CONTRIBUTING.md]:        https://github.com/inbucket/inbucket/blob/main/CONTRIBUTING.md
+[Development Quickstart]: https://github.com/inbucket/inbucket/wiki/Development-Quickstart
+[Docker Image]:           https://inbucket.org/packages/docker.html
+[Elm]:                    https://elm-lang.org/
+[From Source]:            https://www.inbucket.org/installation/from-source.html
+[Go]:                     https://golang.org/
+[Go API docs]:            https://pkg.go.dev/github.com/inbucket/inbucket/pkg/rest/client
+[Homebrew]:               http://brew.sh/
+[Homebrew Tap]:           https://github.com/inbucket/homebrew-inbucket
+[Inbucket Website]:       https://www.inbucket.org/
+[Issues List]:            https://github.com/inbucket/inbucket/issues?state=open
+[Node.js]:                https://nodejs.org/en/

cmd/client/list.go

@@ -6,12 +6,10 @@ import (
 	"fmt"
 
 	"github.com/google/subcommands"
-	"github.com/jhillyerd/inbucket/rest/client"
+	"github.com/inbucket/inbucket/v3/pkg/rest/client"
 )
 
-type listCmd struct {
-	mailbox string
-}
+type listCmd struct{}
 
 func (*listCmd) Name() string {
 	return "list"
@@ -27,22 +25,23 @@ func (*listCmd) Usage() string {
 `
 }
 
-func (l *listCmd) SetFlags(f *flag.FlagSet) {
-}
+func (l *listCmd) SetFlags(f *flag.FlagSet) {}
 
 func (l *listCmd) Execute(
-	_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	ctx context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
 	mailbox := f.Arg(0)
 	if mailbox == "" {
 		return usage("mailbox required")
 	}
+
 	// Setup rest client
 	c, err := client.New(baseURL())
 	if err != nil {
 		return fatal("Couldn't build client", err)
 	}
+
 	// Get list
-	headers, err := c.ListMailbox(mailbox)
+	headers, err := c.ListMailboxWithContext(ctx, mailbox)
 	if err != nil {
 		return fatal("REST call failed", err)
 	}

cmd/client/main.go

@@ -5,8 +5,10 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	"net"
 	"os"
 	"regexp"
+	"strconv"
 
 	"github.com/google/subcommands"
 )
@@ -50,14 +52,17 @@ func main() {
 	// Important top-level flags
 	subcommands.ImportantFlag("host")
 	subcommands.ImportantFlag("port")
+
 	// Setup standard helpers
 	subcommands.Register(subcommands.HelpCommand(), "")
 	subcommands.Register(subcommands.FlagsCommand(), "")
 	subcommands.Register(subcommands.CommandsCommand(), "")
+
 	// Setup my commands
 	subcommands.Register(&listCmd{}, "")
 	subcommands.Register(&matchCmd{}, "")
 	subcommands.Register(&mboxCmd{}, "")
+
 	// Parse and execute
 	flag.Parse()
 	ctx := context.Background()
@@ -65,7 +70,7 @@ func main() {
 }
 
 func baseURL() string {
-	return fmt.Sprintf("http://%s:%v", *host, *port)
+	return "http://%s" + net.JoinHostPort(*host, strconv.FormatUint(uint64(*port), 10))
 }
 
 func fatal(msg string, err error) subcommands.ExitStatus {

cmd/client/match.go

@@ -10,13 +10,12 @@ import (
 	"time"
 
 	"github.com/google/subcommands"
-	"github.com/jhillyerd/inbucket/rest/client"
+	"github.com/inbucket/inbucket/v3/pkg/rest/client"
 )
 
 type matchCmd struct {
-	mailbox string
 	output  string
-	outFunc func(headers []*client.MessageHeader) error
+	outFunc func(ctx context.Context, headers []*client.MessageHeader) error
 	delete  bool
 	// match criteria
 	from    regexFlag
@@ -52,11 +51,12 @@ func (m *matchCmd) SetFlags(f *flag.FlagSet) {
 }
 
 func (m *matchCmd) Execute(
-	_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	ctx context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
 	mailbox := f.Arg(0)
 	if mailbox == "" {
 		return usage("mailbox required")
 	}
+
 	// Select output function
 	switch m.output {
 	case "id":
@@ -68,16 +68,19 @@ func (m *matchCmd) Execute(
 	default:
 		return usage("unknown output type: " + m.output)
 	}
+
 	// Setup REST client
 	c, err := client.New(baseURL())
 	if err != nil {
 		return fatal("Couldn't build client", err)
 	}
+
 	// Get list
-	headers, err := c.ListMailbox(mailbox)
+	headers, err := c.ListMailboxWithContext(ctx, mailbox)
 	if err != nil {
 		return fatal("List REST call failed", err)
 	}
+
 	// Find matches
 	matches := make([]*client.MessageHeader, 0, len(headers))
 	for _, h := range headers {
@@ -85,24 +88,28 @@ func (m *matchCmd) Execute(
 			matches = append(matches, h)
 		}
 	}
+
 	// Return error status if no matches
 	if len(matches) == 0 {
 		return subcommands.ExitFailure
 	}
+
 	// Output matches
-	err = m.outFunc(matches)
+	err = m.outFunc(ctx, matches)
 	if err != nil {
 		return fatal("Error", err)
 	}
+
+	// Optionally, delete matches
 	if m.delete {
-		// Delete matches
 		for _, h := range matches {
-			err = h.Delete()
+			err = h.DeleteWithContext(ctx)
 			if err != nil {
 				return fatal("Delete REST call failed", err)
 			}
 		}
 	}
+
 	return subcommands.ExitSuccess
 }
 
@@ -149,14 +156,14 @@ func (m *matchCmd) match(header *client.MessageHeader) bool {
 	return true
 }
 
-func outputID(headers []*client.MessageHeader) error {
+func outputID(_ context.Context, headers []*client.MessageHeader) error {
 	for _, h := range headers {
 		fmt.Println(h.ID)
 	}
 	return nil
 }
 
-func outputJSON(headers []*client.MessageHeader) error {
+func outputJSON(_ context.Context, headers []*client.MessageHeader) error {
 	jsonEncoder := json.NewEncoder(os.Stdout)
 	jsonEncoder.SetEscapeHTML(false)
 	jsonEncoder.SetIndent("", "  ")

cmd/client/mbox.go

@@ -7,12 +7,11 @@ import (
 	"os"
 
 	"github.com/google/subcommands"
-	"github.com/jhillyerd/inbucket/rest/client"
+	"github.com/inbucket/inbucket/v3/pkg/rest/client"
 )
 
 type mboxCmd struct {
-	mailbox string
-	delete  bool
+	delete bool
 }
 
 func (*mboxCmd) Name() string {
@@ -34,48 +33,55 @@ func (m *mboxCmd) SetFlags(f *flag.FlagSet) {
 }
 
 func (m *mboxCmd) Execute(
-	_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	ctx context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
 	mailbox := f.Arg(0)
 	if mailbox == "" {
 		return usage("mailbox required")
 	}
+
 	// Setup REST client
 	c, err := client.New(baseURL())
 	if err != nil {
 		return fatal("Couldn't build client", err)
 	}
+
 	// Get list
-	headers, err := c.ListMailbox(mailbox)
+	headers, err := c.ListMailboxWithContext(ctx, mailbox)
 	if err != nil {
 		return fatal("List REST call failed", err)
 	}
-	err = outputMbox(headers)
+	err = outputMbox(ctx, headers)
 	if err != nil {
 		return fatal("Error", err)
 	}
+
+	// Optionally, delete retrieved messages
 	if m.delete {
-		// Delete matches
 		for _, h := range headers {
-			err = h.Delete()
+			err = h.DeleteWithContext(ctx)
 			if err != nil {
 				return fatal("Delete REST call failed", err)
 			}
 		}
 	}
+
 	return subcommands.ExitSuccess
 }
 
-// outputMbox renders messages in mbox format
-// also used by match subcommand
-func outputMbox(headers []*client.MessageHeader) error {
+// outputMbox renders messages in mbox format.
+// It is also used by match subcommand.
+func outputMbox(ctx context.Context, headers []*client.MessageHeader) error {
 	for _, h := range headers {
-		source, err := h.GetSource()
+		source, err := h.GetSourceWithContext(ctx)
 		if err != nil {
-			return fmt.Errorf("Get source REST failed: %v", err)
+			return fmt.Errorf("get source REST failed: %v", err)
 		}
+
 		fmt.Printf("From %s\n", h.From)
 		// TODO Escape "From " in message bodies with >
-		source.WriteTo(os.Stdout)
+		if _, err := source.WriteTo(os.Stdout); err != nil {
+			return err
+		}
 		fmt.Println()
 	}
 	return nil

cmd/inbucket/main.go

@@ -0,0 +1,231 @@
+// main is the inbucket daemon launcher
+package main
+
+import (
+	"bufio"
+	"context"
+	"expvar"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"os/signal"
+	"runtime"
+	"syscall"
+	"time"
+
+	"github.com/inbucket/inbucket/v3/pkg/config"
+	"github.com/inbucket/inbucket/v3/pkg/server"
+	"github.com/inbucket/inbucket/v3/pkg/storage"
+	"github.com/inbucket/inbucket/v3/pkg/storage/file"
+	"github.com/inbucket/inbucket/v3/pkg/storage/mem"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+var (
+	// version contains the build version number, populated during linking.
+	version = "undefined"
+
+	// date contains the build date, populated during linking.
+	date = "undefined"
+)
+
+func init() {
+	// Server uptime for status page.
+	startTime := expvar.NewInt("startMillis")
+	startTime.Set(time.Now().UnixNano() / 1000000)
+
+	// Goroutine count for status page.
+	expvar.Publish("goroutines", expvar.Func(func() any {
+		return runtime.NumGoroutine()
+	}))
+
+	// Register storage implementations.
+	storage.Constructors["file"] = file.New
+	storage.Constructors["memory"] = mem.New
+}
+
+func main() {
+	// Command line flags.
+	help := flag.Bool("help", false, "Displays help on flags and env variables.")
+	versionflag := flag.Bool("version", false, "Displays version.")
+	pidfile := flag.String("pidfile", "", "Write our PID into the specified file.")
+	logfile := flag.String("logfile", "stderr", "Write out log into the specified file.")
+	logjson := flag.Bool("logjson", false, "Logs are written in JSON format.")
+	netdebug := flag.Bool("netdebug", false, "Dump SMTP & POP3 network traffic to stdout.")
+	flag.Usage = func() {
+		fmt.Fprintln(os.Stderr, "Usage: inbucket [options]")
+		flag.PrintDefaults()
+	}
+	flag.Parse()
+	if *help {
+		flag.Usage()
+		fmt.Fprintln(os.Stderr, "")
+		config.Usage()
+		return
+	}
+	if *versionflag {
+		fmt.Fprintln(os.Stdout, version)
+		return
+	}
+
+	// Process configuration.
+	config.Version = version
+	config.BuildDate = date
+	conf, err := config.Process()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Configuration error: %v\n", err)
+		os.Exit(1)
+	}
+	if *netdebug {
+		conf.POP3.Debug = true
+		conf.SMTP.Debug = true
+	}
+
+	// Logger setup.
+	closeLog, err := openLog(conf.LogLevel, *logfile, *logjson)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Log error: %v\n", err)
+		os.Exit(1)
+	}
+	startupLog := log.With().Str("phase", "startup").Logger()
+
+	// Setup signal handler.
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT)
+
+	// Initialize logging.
+	startupLog.Info().Str("version", config.Version).Str("buildDate", config.BuildDate).
+		Msg("Inbucket starting")
+
+	// Write pidfile if requested.
+	if *pidfile != "" {
+		pidf, err := os.Create(*pidfile)
+		if err != nil {
+			startupLog.Fatal().Err(err).Str("path", *pidfile).Msg("Failed to create pidfile")
+		}
+		fmt.Fprintf(pidf, "%v\n", os.Getpid())
+		if err := pidf.Close(); err != nil {
+			startupLog.Fatal().Err(err).Str("path", *pidfile).Msg("Failed to close pidfile")
+		}
+	}
+
+	// Configure and start internal services.
+	svcCtx, svcCancel := context.WithCancel(context.Background())
+	services, err := server.FullAssembly(conf)
+	if err != nil {
+		startupLog.Fatal().Err(err).Msg("Fatal error during startup")
+		removePIDFile(*pidfile)
+	}
+	services.Start(svcCtx, func() {
+		startupLog.Debug().Msg("All services report ready")
+	})
+
+	// Loop forever waiting for signals or shutdown channel.
+signalLoop:
+	for {
+		select {
+		case sig := <-sigChan:
+			switch sig {
+			case syscall.SIGINT:
+				// Shutdown requested
+				log.Info().Str("phase", "shutdown").Str("signal", "SIGINT").
+					Msg("Received SIGINT, shutting down")
+				svcCancel()
+				break signalLoop
+			case syscall.SIGTERM:
+				// Shutdown requested
+				log.Info().Str("phase", "shutdown").Str("signal", "SIGTERM").
+					Msg("Received SIGTERM, shutting down")
+				svcCancel()
+				break signalLoop
+			}
+		case <-services.Notify():
+			log.Info().Str("phase", "shutdown").Msg("Shutting down due to service failure")
+			svcCancel()
+			break signalLoop
+		}
+	}
+
+	// Wait for active connections to finish.
+	go timedExit(*pidfile)
+	log.Debug().Str("phase", "shutdown").Msg("Draining SMTP connections")
+	services.SMTPServer.Drain()
+	log.Debug().Str("phase", "shutdown").Msg("Draining POP3 connections")
+	services.POP3Server.Drain()
+	log.Debug().Str("phase", "shutdown").Msg("Checking retention scanner is stopped")
+	services.RetentionScanner.Join()
+
+	removePIDFile(*pidfile)
+	closeLog()
+}
+
+// openLog configures zerolog output, returns func to close logfile.
+func openLog(level string, logfile string, json bool) (closeLog func(), err error) {
+	switch level {
+	case "debug":
+		zerolog.SetGlobalLevel(zerolog.DebugLevel)
+	case "info":
+		zerolog.SetGlobalLevel(zerolog.InfoLevel)
+	case "warn":
+		zerolog.SetGlobalLevel(zerolog.WarnLevel)
+	case "error":
+		zerolog.SetGlobalLevel(zerolog.ErrorLevel)
+	default:
+		return nil, fmt.Errorf("log level %q not one of: debug, info, warn, error", level)
+	}
+
+	closeLog = func() {}
+	var w io.Writer
+	color := runtime.GOOS != "windows"
+	switch logfile {
+	case "stderr":
+		w = os.Stderr
+	case "stdout":
+		w = os.Stdout
+	default:
+		logf, err := os.OpenFile(logfile, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
+		if err != nil {
+			return nil, err
+		}
+		bw := bufio.NewWriter(logf)
+		w = bw
+		color = false
+		closeLog = func() {
+			_ = bw.Flush()
+			_ = logf.Close()
+		}
+	}
+
+	w = zerolog.SyncWriter(w)
+	if json {
+		log.Logger = log.Output(w)
+		return closeLog, nil
+	}
+
+	log.Logger = log.Output(zerolog.ConsoleWriter{
+		Out:     w,
+		NoColor: !color,
+	})
+
+	return closeLog, nil
+}
+
+// removePIDFile removes the PID file if created.
+func removePIDFile(pidfile string) {
+	if pidfile != "" {
+		if err := os.Remove(pidfile); err != nil {
+			log.Error().Str("phase", "shutdown").Err(err).Str("path", pidfile).
+				Msg("Failed to remove pidfile")
+		}
+	}
+}
+
+// timedExit is called as a goroutine during shutdown, it will force an exit after 15 seconds.
+func timedExit(pidfile string) {
+	time.Sleep(15 * time.Second)
+	removePIDFile(pidfile)
+	log.Error().Str("phase", "shutdown").Msg("Clean shutdown took too long, forcing exit")
+	os.Exit(0)
+}

config/config.go

@@ -1,270 +0,0 @@
-package config
-
-import (
-	"fmt"
-	"net"
-	"os"
-	"sort"
-	"strings"
-
-	"github.com/robfig/config"
-)
-
-// SMTPConfig contains the SMTP server configuration - not using pointers so that we can pass around
-// copies of the object safely.
-type SMTPConfig struct {
-	IP4address      net.IP
-	IP4port         int
-	Domain          string
-	DomainNoStore   string
-	MaxRecipients   int
-	MaxIdleSeconds  int
-	MaxMessageBytes int
-	StoreMessages   bool
-}
-
-// POP3Config contains the POP3 server configuration
-type POP3Config struct {
-	IP4address     net.IP
-	IP4port        int
-	Domain         string
-	MaxIdleSeconds int
-}
-
-// WebConfig contains the HTTP server configuration
-type WebConfig struct {
-	IP4address     net.IP
-	IP4port        int
-	TemplateDir    string
-	TemplateCache  bool
-	PublicDir      string
-	GreetingFile   string
-	MailboxPrompt  string
-	CookieAuthKey  string
-	MonitorVisible bool
-	MonitorHistory int
-}
-
-// DataStoreConfig contains the mail store configuration
-type DataStoreConfig struct {
-	Path             string
-	RetentionMinutes int
-	RetentionSleep   int
-	MailboxMsgCap    int
-}
-
-const (
-	missingErrorFmt = "[%v] missing required option %q"
-	parseErrorFmt   = "[%v] option %q error: %v"
-)
-
-var (
-	// Version of this build, set by main
-	Version = ""
-
-	// BuildDate for this build, set by main
-	BuildDate = ""
-
-	// Config is our global robfig/config object
-	Config   *config.Config
-	logLevel string
-
-	// Parsed specific configs
-	smtpConfig      = &SMTPConfig{}
-	pop3Config      = &POP3Config{}
-	webConfig       = &WebConfig{}
-	dataStoreConfig = &DataStoreConfig{}
-)
-
-// GetSMTPConfig returns a copy of the SmtpConfig object
-func GetSMTPConfig() SMTPConfig {
-	return *smtpConfig
-}
-
-// GetPOP3Config returns a copy of the Pop3Config object
-func GetPOP3Config() POP3Config {
-	return *pop3Config
-}
-
-// GetWebConfig returns a copy of the WebConfig object
-func GetWebConfig() WebConfig {
-	return *webConfig
-}
-
-// GetDataStoreConfig returns a copy of the DataStoreConfig object
-func GetDataStoreConfig() DataStoreConfig {
-	return *dataStoreConfig
-}
-
-// GetLogLevel returns the configured log level
-func GetLogLevel() string {
-	return logLevel
-}
-
-// LoadConfig loads the specified configuration file into inbucket.Config and performs validations
-// on it.
-func LoadConfig(filename string) error {
-	var err error
-	Config, err = config.ReadDefault(filename)
-	if err != nil {
-		return err
-	}
-	// Validation error messages
-	messages := make([]string, 0)
-	// Validate sections
-	for _, s := range []string{"logging", "smtp", "pop3", "web", "datastore"} {
-		if !Config.HasSection(s) {
-			messages = append(messages,
-				fmt.Sprintf("Config section [%v] is required", s))
-		}
-	}
-	// Return immediately if config is missing entire sections
-	if len(messages) > 0 {
-		fmt.Fprintln(os.Stderr, "Error(s) validating configuration:")
-		for _, m := range messages {
-			fmt.Fprintln(os.Stderr, " -", m)
-		}
-		return fmt.Errorf("Failed to validate configuration")
-	}
-	// Load string config options
-	stringOptions := []struct {
-		section  string
-		name     string
-		target   *string
-		required bool
-	}{
-		{"logging", "level", &logLevel, true},
-		{"smtp", "domain", &smtpConfig.Domain, true},
-		{"smtp", "domain.nostore", &smtpConfig.DomainNoStore, false},
-		{"pop3", "domain", &pop3Config.Domain, true},
-		{"web", "template.dir", &webConfig.TemplateDir, true},
-		{"web", "public.dir", &webConfig.PublicDir, true},
-		{"web", "greeting.file", &webConfig.GreetingFile, true},
-		{"web", "mailbox.prompt", &webConfig.MailboxPrompt, false},
-		{"web", "cookie.auth.key", &webConfig.CookieAuthKey, false},
-		{"datastore", "path", &dataStoreConfig.Path, true},
-	}
-	for _, opt := range stringOptions {
-		str, err := Config.String(opt.section, opt.name)
-		if Config.HasOption(opt.section, opt.name) && err != nil {
-			messages = append(messages, fmt.Sprintf(parseErrorFmt, opt.section, opt.name, err))
-			continue
-		}
-		if str == "" && opt.required {
-			messages = append(messages, fmt.Sprintf(missingErrorFmt, opt.section, opt.name))
-		}
-		*opt.target = str
-	}
-	// Load boolean config options
-	boolOptions := []struct {
-		section  string
-		name     string
-		target   *bool
-		required bool
-	}{
-		{"smtp", "store.messages", &smtpConfig.StoreMessages, true},
-		{"web", "template.cache", &webConfig.TemplateCache, true},
-		{"web", "monitor.visible", &webConfig.MonitorVisible, true},
-	}
-	for _, opt := range boolOptions {
-		if Config.HasOption(opt.section, opt.name) {
-			flag, err := Config.Bool(opt.section, opt.name)
-			if err != nil {
-				messages = append(messages, fmt.Sprintf(parseErrorFmt, opt.section, opt.name, err))
-			}
-			*opt.target = flag
-		} else {
-			if opt.required {
-				messages = append(messages, fmt.Sprintf(missingErrorFmt, opt.section, opt.name))
-			}
-		}
-	}
-	// Load integer config options
-	intOptions := []struct {
-		section  string
-		name     string
-		target   *int
-		required bool
-	}{
-		{"smtp", "ip4.port", &smtpConfig.IP4port, true},
-		{"smtp", "max.recipients", &smtpConfig.MaxRecipients, true},
-		{"smtp", "max.idle.seconds", &smtpConfig.MaxIdleSeconds, true},
-		{"smtp", "max.message.bytes", &smtpConfig.MaxMessageBytes, true},
-		{"pop3", "ip4.port", &pop3Config.IP4port, true},
-		{"pop3", "max.idle.seconds", &pop3Config.MaxIdleSeconds, true},
-		{"web", "ip4.port", &webConfig.IP4port, true},
-		{"web", "monitor.history", &webConfig.MonitorHistory, true},
-		{"datastore", "retention.minutes", &dataStoreConfig.RetentionMinutes, true},
-		{"datastore", "retention.sleep.millis", &dataStoreConfig.RetentionSleep, true},
-		{"datastore", "mailbox.message.cap", &dataStoreConfig.MailboxMsgCap, true},
-	}
-	for _, opt := range intOptions {
-		if Config.HasOption(opt.section, opt.name) {
-			num, err := Config.Int(opt.section, opt.name)
-			if err != nil {
-				messages = append(messages, fmt.Sprintf(parseErrorFmt, opt.section, opt.name, err))
-			}
-			*opt.target = num
-		} else {
-			if opt.required {
-				messages = append(messages, fmt.Sprintf(missingErrorFmt, opt.section, opt.name))
-			}
-		}
-	}
-	// Load IP address config options
-	ipOptions := []struct {
-		section  string
-		name     string
-		target   *net.IP
-		required bool
-	}{
-		{"smtp", "ip4.address", &smtpConfig.IP4address, true},
-		{"pop3", "ip4.address", &pop3Config.IP4address, true},
-		{"web", "ip4.address", &webConfig.IP4address, true},
-	}
-	for _, opt := range ipOptions {
-		if Config.HasOption(opt.section, opt.name) {
-			str, err := Config.String(opt.section, opt.name)
-			if err != nil {
-				messages = append(messages, fmt.Sprintf(parseErrorFmt, opt.section, opt.name, err))
-				continue
-			}
-			addr := net.ParseIP(str)
-			if addr == nil {
-				messages = append(messages,
-					fmt.Sprintf("Failed to parse IP [%v]%v: %q", opt.section, opt.name, str))
-				continue
-			}
-			addr = addr.To4()
-			if addr == nil {
-				messages = append(messages,
-					fmt.Sprintf("Failed to parse IP [%v]%v: %q not IPv4!",
-						opt.section, opt.name, str))
-			}
-			*opt.target = addr
-		} else {
-			if opt.required {
-				messages = append(messages, fmt.Sprintf(missingErrorFmt, opt.section, opt.name))
-			}
-		}
-	}
-	// Validate log level
-	switch strings.ToUpper(logLevel) {
-	case "":
-		// Missing was already reported
-	case "TRACE", "INFO", "WARN", "ERROR":
-	default:
-		messages = append(messages,
-			fmt.Sprintf("Invalid value provided for [logging]level: %q", logLevel))
-	}
-	// Print messages and return error if any validations failed
-	if len(messages) > 0 {
-		fmt.Fprintln(os.Stderr, "Error(s) validating configuration:")
-		sort.Strings(messages)
-		for _, m := range messages {
-			fmt.Fprintln(os.Stderr, " -", m)
-		}
-		return fmt.Errorf("Failed to validate configuration")
-	}
-	return nil
-}

datastore/datastore.go

@@ -1,53 +0,0 @@
-// Package datastore contains implementation independent datastore logic
-package datastore
-
-import (
-	"errors"
-	"io"
-	"net/mail"
-	"time"
-
-	"github.com/jhillyerd/enmime"
-)
-
-var (
-	// ErrNotExist indicates the requested message does not exist
-	ErrNotExist = errors.New("Message does not exist")
-
-	// ErrNotWritable indicates the message is closed; no longer writable
-	ErrNotWritable = errors.New("Message not writable")
-)
-
-// DataStore is an interface to get Mailboxes stored in Inbucket
-type DataStore interface {
-	MailboxFor(emailAddress string) (Mailbox, error)
-	AllMailboxes() ([]Mailbox, error)
-}
-
-// Mailbox is an interface to get and manipulate messages in a DataStore
-type Mailbox interface {
-	GetMessages() ([]Message, error)
-	GetMessage(id string) (Message, error)
-	Purge() error
-	NewMessage() (Message, error)
-	Name() string
-	String() string
-}
-
-// Message is an interface for a single message in a Mailbox
-type Message interface {
-	ID() string
-	From() string
-	To() []string
-	Date() time.Time
-	Subject() string
-	RawReader() (reader io.ReadCloser, err error)
-	ReadHeader() (msg *mail.Message, err error)
-	ReadBody() (body *enmime.Envelope, err error)
-	ReadRaw() (raw *string, err error)
-	Append(data []byte) error
-	Close() error
-	Delete() error
-	String() string
-	Size() int64
-}

datastore/retention.go

@@ -1,180 +0,0 @@
-package datastore
-
-import (
-	"container/list"
-	"expvar"
-	"sync"
-	"time"
-
-	"github.com/jhillyerd/inbucket/config"
-	"github.com/jhillyerd/inbucket/log"
-)
-
-var (
-	retentionScanCompleted   = time.Now()
-	retentionScanCompletedMu sync.RWMutex
-
-	// History counters
-	expRetentionDeletesTotal = new(expvar.Int)
-	expRetentionPeriod       = new(expvar.Int)
-	expRetainedCurrent       = new(expvar.Int)
-
-	// History of certain stats
-	retentionDeletesHist = list.New()
-	retainedHist         = list.New()
-
-	// History rendered as comma delimited string
-	expRetentionDeletesHist = new(expvar.String)
-	expRetainedHist         = new(expvar.String)
-)
-
-func init() {
-	rm := expvar.NewMap("retention")
-	rm.Set("SecondsSinceScanCompleted", expvar.Func(secondsSinceRetentionScanCompleted))
-	rm.Set("DeletesHist", expRetentionDeletesHist)
-	rm.Set("DeletesTotal", expRetentionDeletesTotal)
-	rm.Set("Period", expRetentionPeriod)
-	rm.Set("RetainedHist", expRetainedHist)
-	rm.Set("RetainedCurrent", expRetainedCurrent)
-
-	log.AddTickerFunc(func() {
-		expRetentionDeletesHist.Set(log.PushMetric(retentionDeletesHist, expRetentionDeletesTotal))
-		expRetainedHist.Set(log.PushMetric(retainedHist, expRetainedCurrent))
-	})
-}
-
-// RetentionScanner looks for messages older than the configured retention period and deletes them.
-type RetentionScanner struct {
-	globalShutdown    chan bool // Closes when Inbucket needs to shut down
-	retentionShutdown chan bool // Closed after the scanner has shut down
-	ds                DataStore
-	retentionPeriod   time.Duration
-	retentionSleep    time.Duration
-}
-
-// NewRetentionScanner launches a go-routine that scans for expired
-// messages, following the configured interval
-func NewRetentionScanner(ds DataStore, shutdownChannel chan bool) *RetentionScanner {
-	cfg := config.GetDataStoreConfig()
-	rs := &RetentionScanner{
-		globalShutdown:    shutdownChannel,
-		retentionShutdown: make(chan bool),
-		ds:                ds,
-		retentionPeriod:   time.Duration(cfg.RetentionMinutes) * time.Minute,
-		retentionSleep:    time.Duration(cfg.RetentionSleep) * time.Millisecond,
-	}
-	// expRetentionPeriod is displayed on the status page
-	expRetentionPeriod.Set(int64(cfg.RetentionMinutes * 60))
-	return rs
-}
-
-// Start up the retention scanner if retention period > 0
-func (rs *RetentionScanner) Start() {
-	if rs.retentionPeriod <= 0 {
-		log.Infof("Retention scanner disabled")
-		close(rs.retentionShutdown)
-		return
-	}
-	log.Infof("Retention configured for %v", rs.retentionPeriod)
-	go rs.run()
-}
-
-// run loops to kick off the scanner on the correct schedule
-func (rs *RetentionScanner) run() {
-	start := time.Now()
-retentionLoop:
-	for {
-		// Prevent scanner from starting more than once a minute
-		since := time.Since(start)
-		if since < time.Minute {
-			dur := time.Minute - since
-			log.Tracef("Retention scanner sleeping for %v", dur)
-			select {
-			case <-rs.globalShutdown:
-				break retentionLoop
-			case <-time.After(dur):
-			}
-		}
-		// Kickoff scan
-		start = time.Now()
-		if err := rs.doScan(); err != nil {
-			log.Errorf("Error during retention scan: %v", err)
-		}
-		// Check for global shutdown
-		select {
-		case <-rs.globalShutdown:
-			break retentionLoop
-		default:
-		}
-	}
-	log.Tracef("Retention scanner shut down")
-	close(rs.retentionShutdown)
-}
-
-// doScan does a single pass of all mailboxes looking for messages that can be purged
-func (rs *RetentionScanner) doScan() error {
-	log.Tracef("Starting retention scan")
-	cutoff := time.Now().Add(-1 * rs.retentionPeriod)
-	mboxes, err := rs.ds.AllMailboxes()
-	if err != nil {
-		return err
-	}
-	retained := 0
-	// Loop over all mailboxes
-	for _, mb := range mboxes {
-		messages, err := mb.GetMessages()
-		if err != nil {
-			return err
-		}
-		// Loop over all messages in mailbox
-		for _, msg := range messages {
-			if msg.Date().Before(cutoff) {
-				log.Tracef("Purging expired message %v", msg.ID())
-				err = msg.Delete()
-				if err != nil {
-					// Log but don't abort
-					log.Errorf("Failed to purge message %v: %v", msg.ID(), err)
-				} else {
-					expRetentionDeletesTotal.Add(1)
-				}
-			} else {
-				retained++
-			}
-		}
-		// Sleep after completing a mailbox
-		select {
-		case <-rs.globalShutdown:
-			log.Tracef("Retention scan aborted due to shutdown")
-			return nil
-		case <-time.After(rs.retentionSleep):
-			// Reduce disk thrashing
-		}
-	}
-	// Update metrics
-	setRetentionScanCompleted(time.Now())
-	expRetainedCurrent.Set(int64(retained))
-	return nil
-}
-
-// Join does not retun until the retention scanner has shut down
-func (rs *RetentionScanner) Join() {
-	if rs.retentionShutdown != nil {
-		<-rs.retentionShutdown
-	}
-}
-
-func setRetentionScanCompleted(t time.Time) {
-	retentionScanCompletedMu.Lock()
-	defer retentionScanCompletedMu.Unlock()
-	retentionScanCompleted = t
-}
-
-func getRetentionScanCompleted() time.Time {
-	retentionScanCompletedMu.RLock()
-	defer retentionScanCompletedMu.RUnlock()
-	return retentionScanCompleted
-}
-
-func secondsSinceRetentionScanCompleted() interface{} {
-	return time.Since(getRetentionScanCompleted()) / time.Second
-}

datastore/retention_test.go

@@ -1,67 +0,0 @@
-package datastore
-
-import (
-	"fmt"
-	"testing"
-	"time"
-)
-
-func TestDoRetentionScan(t *testing.T) {
-	// Create mock objects
-	mds := &MockDataStore{}
-
-	mb1 := &MockMailbox{}
-	mb2 := &MockMailbox{}
-	mb3 := &MockMailbox{}
-
-	// Mockup some different aged messages (num is in hours)
-	new1 := mockMessage(0)
-	new2 := mockMessage(1)
-	new3 := mockMessage(2)
-	old1 := mockMessage(4)
-	old2 := mockMessage(12)
-	old3 := mockMessage(24)
-
-	// First it should ask for all mailboxes
-	mds.On("AllMailboxes").Return([]Mailbox{mb1, mb2, mb3}, nil)
-
-	// Then for all messages on each box
-	mb1.On("GetMessages").Return([]Message{new1, old1, old2}, nil)
-	mb2.On("GetMessages").Return([]Message{old3, new2}, nil)
-	mb3.On("GetMessages").Return([]Message{new3}, nil)
-
-	// Test 4 hour retention
-	rs := &RetentionScanner{
-		ds:              mds,
-		retentionPeriod: 4*time.Hour - time.Minute,
-		retentionSleep:  0,
-	}
-	if err := rs.doScan(); err != nil {
-		t.Error(err)
-	}
-
-	// Check our assertions
-	mds.AssertExpectations(t)
-	mb1.AssertExpectations(t)
-	mb2.AssertExpectations(t)
-	mb3.AssertExpectations(t)
-
-	// Delete should not have been called on new messages
-	new1.AssertNotCalled(t, "Delete")
-	new2.AssertNotCalled(t, "Delete")
-	new3.AssertNotCalled(t, "Delete")
-
-	// Delete should have been called once on old messages
-	old1.AssertNumberOfCalls(t, "Delete", 1)
-	old2.AssertNumberOfCalls(t, "Delete", 1)
-	old3.AssertNumberOfCalls(t, "Delete", 1)
-}
-
-// Make a MockMessage of a specific age
-func mockMessage(ageHours int) *MockMessage {
-	msg := &MockMessage{}
-	msg.On("ID").Return(fmt.Sprintf("MSG[age=%vh]", ageHours))
-	msg.On("Date").Return(time.Now().Add(time.Duration(ageHours*-1) * time.Hour))
-	msg.On("Delete").Return(nil)
-	return msg
-}

datastore/testing.go

@@ -1,157 +0,0 @@
-package datastore
-
-import (
-	"io"
-	"net/mail"
-	"time"
-
-	"github.com/jhillyerd/enmime"
-	"github.com/stretchr/testify/mock"
-)
-
-// MockDataStore is a shared mock for unit testing
-type MockDataStore struct {
-	mock.Mock
-}
-
-// MailboxFor mock function
-func (m *MockDataStore) MailboxFor(name string) (Mailbox, error) {
-	args := m.Called(name)
-	return args.Get(0).(Mailbox), args.Error(1)
-}
-
-// AllMailboxes mock function
-func (m *MockDataStore) AllMailboxes() ([]Mailbox, error) {
-	args := m.Called()
-	return args.Get(0).([]Mailbox), args.Error(1)
-}
-
-// MockMailbox is a shared mock for unit testing
-type MockMailbox struct {
-	mock.Mock
-}
-
-// GetMessages mock function
-func (m *MockMailbox) GetMessages() ([]Message, error) {
-	args := m.Called()
-	return args.Get(0).([]Message), args.Error(1)
-}
-
-// GetMessage mock function
-func (m *MockMailbox) GetMessage(id string) (Message, error) {
-	args := m.Called(id)
-	return args.Get(0).(Message), args.Error(1)
-}
-
-// Purge mock function
-func (m *MockMailbox) Purge() error {
-	args := m.Called()
-	return args.Error(0)
-}
-
-// NewMessage mock function
-func (m *MockMailbox) NewMessage() (Message, error) {
-	args := m.Called()
-	return args.Get(0).(Message), args.Error(1)
-}
-
-// Name mock function
-func (m *MockMailbox) Name() string {
-	args := m.Called()
-	return args.String(0)
-}
-
-// String mock function
-func (m *MockMailbox) String() string {
-	args := m.Called()
-	return args.String(0)
-}
-
-// MockMessage is a shared mock for unit testing
-type MockMessage struct {
-	mock.Mock
-}
-
-// ID mock function
-func (m *MockMessage) ID() string {
-	args := m.Called()
-	return args.String(0)
-}
-
-// From mock function
-func (m *MockMessage) From() string {
-	args := m.Called()
-	return args.String(0)
-}
-
-// To mock function
-func (m *MockMessage) To() []string {
-	args := m.Called()
-	return args.Get(0).([]string)
-}
-
-// Date mock function
-func (m *MockMessage) Date() time.Time {
-	args := m.Called()
-	return args.Get(0).(time.Time)
-}
-
-// Subject mock function
-func (m *MockMessage) Subject() string {
-	args := m.Called()
-	return args.String(0)
-}
-
-// ReadHeader mock function
-func (m *MockMessage) ReadHeader() (msg *mail.Message, err error) {
-	args := m.Called()
-	return args.Get(0).(*mail.Message), args.Error(1)
-}
-
-// ReadBody mock function
-func (m *MockMessage) ReadBody() (body *enmime.Envelope, err error) {
-	args := m.Called()
-	return args.Get(0).(*enmime.Envelope), args.Error(1)
-}
-
-// ReadRaw mock function
-func (m *MockMessage) ReadRaw() (raw *string, err error) {
-	args := m.Called()
-	return args.Get(0).(*string), args.Error(1)
-}
-
-// RawReader mock function
-func (m *MockMessage) RawReader() (reader io.ReadCloser, err error) {
-	args := m.Called()
-	return args.Get(0).(io.ReadCloser), args.Error(1)
-}
-
-// Size mock function
-func (m *MockMessage) Size() int64 {
-	args := m.Called()
-	return int64(args.Int(0))
-}
-
-// Append mock function
-func (m *MockMessage) Append(data []byte) error {
-	// []byte arg seems to mess up testify/mock
-	return nil
-}
-
-// Close mock function
-func (m *MockMessage) Close() error {
-	args := m.Called()
-	return args.Error(0)
-}
-
-// Delete mock function
-func (m *MockMessage) Delete() error {
-	args := m.Called()
-	return args.Error(0)
-}
-
-// String mock function
-func (m *MockMessage) String() string {
-	args := m.Called()
-	return args.String(0)
-}

doc/config.md

@@ -0,0 +1,489 @@
+# Inbucket Configuration
+
+Inbucket is configured via environment variables.  Most options have a
+reasonable default, but it is likely you will need to change some to suite your
+desired use cases.
+
+Running `inbucket -help` will yield a condensed summary of the environment
+variables it supports:
+
+    KEY                                 DEFAULT             DESCRIPTION
+    INBUCKET_LOGLEVEL                   info                debug, info, warn, or error
+    INBUCKET_LUA_PATH                   inbucket.lua        Lua script path
+    INBUCKET_MAILBOXNAMING              local               Use local, full, or domain addressing
+    INBUCKET_SMTP_ADDR                  0.0.0.0:2500        SMTP server IP4 host:port
+    INBUCKET_SMTP_DOMAIN                inbucket            HELO domain
+    INBUCKET_SMTP_MAXRECIPIENTS         200                 Maximum RCPT TO per message
+    INBUCKET_SMTP_MAXMESSAGEBYTES       10240000            Maximum message size
+    INBUCKET_SMTP_DEFAULTACCEPT         true                Accept all mail by default?
+    INBUCKET_SMTP_ACCEPTDOMAINS                             Domains to accept mail for
+    INBUCKET_SMTP_REJECTDOMAINS                             Domains to reject mail for
+    INBUCKET_SMTP_REJECTORIGINDOMAINS                       Domains to reject mail from
+    INBUCKET_SMTP_DEFAULTSTORE          true                Store all mail by default?
+    INBUCKET_SMTP_STOREDOMAINS                              Domains to store mail for
+    INBUCKET_SMTP_DISCARDDOMAINS                            Domains to discard mail for
+    INBUCKET_SMTP_TIMEOUT               300s                Idle network timeout
+    INBUCKET_SMTP_TLSENABLED            false               Enable STARTTLS option
+    INBUCKET_SMTP_TLSPRIVKEY            cert.key            X509 Private Key file for TLS Support
+    INBUCKET_SMTP_TLSCERT               cert.crt            X509 Public Certificate file for TLS Support
+    INBUCKET_POP3_ADDR                  0.0.0.0:1100        POP3 server IP4 host:port
+    INBUCKET_POP3_DOMAIN                inbucket            HELLO domain
+    INBUCKET_POP3_TIMEOUT               600s                Idle network timeout
+    INBUCKET_WEB_ADDR                   0.0.0.0:9000        Web server IP4 host:port
+    INBUCKET_WEB_BASEPATH                                   Base path prefix for UI and API URLs
+    INBUCKET_WEB_UIDIR                  ui/dist             User interface dir
+    INBUCKET_WEB_GREETINGFILE           ui/greeting.html    Home page greeting HTML
+    INBUCKET_WEB_MONITORVISIBLE         true                Show monitor tab in UI?
+    INBUCKET_WEB_MONITORHISTORY         30                  Monitor remembered messages
+    INBUCKET_WEB_PPROF                  false               Expose profiling tools on /debug/pprof
+    INBUCKET_STORAGE_TYPE               memory              Storage impl: file or memory
+    INBUCKET_STORAGE_PARAMS                                 Storage impl parameters, see docs.
+    INBUCKET_STORAGE_RETENTIONPERIOD    24h                 Duration to retain messages
+    INBUCKET_STORAGE_RETENTIONSLEEP     50ms                Duration to sleep between mailboxes
+    INBUCKET_STORAGE_MAILBOXMSGCAP      500                 Maximum messages per mailbox
+
+The following documentation will describe each of these in more detail.
+
+
+## Global
+
+### Log Level
+
+`INBUCKET_LOGLEVEL`
+
+This setting controls the verbosity of log output.  A small desktop installation
+should probably select `info`, but a busy shared installation would be better
+off with `warn` or `error`.
+
+- Default: `info`
+- Values: one of `debug`, `info`, `warn`, or `error`
+
+### Lua Script
+
+`INBUCKET_LUA_PATH`
+
+This is the path to the (optional) Inbucket Lua script.  If the specified file
+is present, Inbucket will load it during startup.  Ignored if the file is not
+found, or the setting is empty.
+
+- Default: `inbucket.lua`
+
+### Mailbox Naming
+
+`INBUCKET_MAILBOXNAMING`
+
+The mailbox naming setting determines the name of a mailbox for an incoming
+message, and thus where it must be retrieved from later.
+
+#### `local` ensures the domain is removed, such that:
+
+- `james@inbucket.org` is stored in `james`
+- `james+spam@inbucket.org` is stored in `james`
+
+#### `full` retains the domain as part of the name, such that:
+
+- `james@inbucket.org` is stored in `james@inbucket.org`
+- `james+spam@inbucket.org` is stored in `james@inbucket.org`
+
+Prior to the addition of the mailbox naming setting, Inbucket always operated in
+local mode.  Regardless of this setting, the `+` wildcard/extension is not
+incorporated into the mailbox name.
+
+#### `domain` ensures the local-part is removed, such that:
+
+- `james@inbucket.org` is stored in `inbucket.org`
+- `matt@inbucket.org` is stored in `inbucket.org`
+- `matt@noinbucket.com` is stored in `notinbucket.com`
+
+- Default: `local`
+- Values: one of `local` or `full` or `domain`
+
+
+## SMTP
+
+### Address and Port
+
+`INBUCKET_SMTP_ADDR`
+
+The IPv4 address and TCP port number the SMTP server should listen on, separated
+by a colon.  Some operating systems may prevent Inbucket from listening on port
+25 without escalated privileges.  Using an IP address of 0.0.0.0 will cause
+Inbucket to listen on all available network interfaces.
+
+- Default: `0.0.0.0:2500`
+
+### Greeting Domain
+
+`INBUCKET_SMTP_DOMAIN`
+
+The domain used in the SMTP greeting:
+
+    220 domain Inbucket SMTP ready
+
+Most SMTP clients appear to ignore this value.
+
+- Default: `inbucket`
+
+### Maximum Recipients
+
+`INBUCKET_SMTP_MAXRECIPIENTS`
+
+Maximum number of recipients allowed (SMTP `RCPT TO` phase).  If you are testing
+a mailing list server, you may need to increase this value.  For comparison, the
+Postfix SMTP server uses a default of 1000, it would be unwise to exceed this.
+
+- Default: `200`
+
+### Maximum Message Size
+
+`INBUCKET_SMTP_MAXMESSAGEBYTES`
+
+Maximum allowable size of a message (including headers) in bytes.  Messages
+exceeding this size will be rejected during the SMTP `DATA` phase.
+
+- Default: `10240000` (10MB)
+
+### Default Recipient Accept Policy
+
+`INBUCKET_SMTP_DEFAULTACCEPT`
+
+If true, Inbucket will accept mail to any domain unless present in the reject
+domains list.  If false, recipients will be rejected unless their domain is
+present in the accept domains list.
+
+- Default: `true`
+- Values: `true` or `false`
+
+### Accepted Recipient Domain List
+
+`INBUCKET_SMTP_ACCEPTDOMAINS`
+
+List of domains to accept mail for when `INBUCKET_SMTP_DEFAULTACCEPT` is false;
+has no effect when true.
+
+- Default: None
+- Values: Comma separated list of recipient domains
+- Example: `localhost,mysite.org`
+
+### Rejected Recipient Domain List
+
+`INBUCKET_SMTP_REJECTDOMAINS`
+
+List of domains to reject mail for when `INBUCKET_SMTP_DEFAULTACCEPT` is true;
+has no effect when false.
+
+- Default: None
+- Values: Comma separated list of recipient domains
+- Example: `reject.com,gmail.com`
+
+### Rejected Origin Domain List
+
+`INBUCKET_SMTP_REJECTORIGINDOMAINS`
+
+List of domains to reject mail from.  This list is enforced regardless of the
+`INBUCKET_SMTP_DEFAULTACCEPT` value.
+
+Enforcement takes place during evalation of the `MAIL FROM` SMTP command, the
+origin domain is extracted from the address presented and compared against the
+list.  It does not take email headers into account.
+
+- Default: None
+- Values: Comma separated list of origin domains
+- Example: `reject.com,gmail.com`
+
+### Default Recipient Store Policy
+
+`INBUCKET_SMTP_DEFAULTSTORE`
+
+If true, Inbucket will store mail sent to any domain unless present in the
+discard domains list.  If false, messages will be discarded unless their domain
+is present in the store domains list.
+
+- Default: `true`
+- Values: `true` or `false`
+
+### Stored Recipient Domain List
+
+`INBUCKET_SMTP_STOREDOMAINS`
+
+List of domains to store mail for when `INBUCKET_SMTP_DEFAULTSTORE` is false;
+has no effect when true.
+
+- Default: None
+- Values: Comma separated list of recipient domains
+- Example: `localhost,mysite.org`
+
+### Discarded Recipient Domain List
+
+`INBUCKET_SMTP_DISCARDDOMAINS`
+
+Mail sent to these domains will not be stored by Inbucket.  This is helpful if
+you are load or soak testing a service, and do not plan to inspect the resulting
+emails.  Messages sent to a domain other than this will be stored normally.
+Only has an effect when `INBUCKET_SMTP_DEFAULTSTORE` is true.
+
+- Default: None
+- Values: Comma separated list of recipient domains
+- Example: `recycle.com,loadtest.org`
+
+### Network Idle Timeout
+
+`INBUCKET_SMTP_TIMEOUT`
+
+Delay before closing an idle SMTP connection.  The SMTP RFC recommends 300
+seconds.  Consider reducing this *significantly* if you plan to expose Inbucket
+to the public internet.
+
+- Default: `300s`
+- Values: Duration ending in `s` for seconds, `m` for minutes
+
+### TLS Support Availability
+
+`INBUCKET_SMTP_TLSENABLED`
+
+Enable the STARTTLS option for opportunistic TLS support
+
+- Default: `false`
+- Values: `true` or `false`
+
+### TLS Private Key File
+
+`INBUCKET_SMTP_TLSPRIVKEY`
+
+Specify the x509 Private key file to be used for TLS negotiation.
+This option is only valid when INBUCKET_SMTP_TLSENABLED is enabled.
+
+- Default: `cert.key`
+- Values: filename or path to private key
+- Example: `server.privkey`
+
+### TLS Public Certificate File
+
+`INBUCKET_SMTP_TLSCERT`
+
+Specify the x509 Certificate file to be used for TLS negotiation.
+This option is only valid when INBUCKET_SMTP_TLSENABLED is enabled.
+
+- Default: `cert.crt`
+- Values: filename or path to the certificate key
+- Example: `server.crt`
+
+## POP3
+
+### Address and Port
+
+`INBUCKET_POP3_ADDR`
+
+The IPv4 address and TCP port number the POP3 server should listen on, separated
+by a colon.  Some operating systems may prevent Inbucket from listening on port
+110 without escalated privileges.  Using an IP address of 0.0.0.0 will cause
+Inbucket to listen on all available network interfaces.
+
+- Default: `0.0.0.0:1100`
+
+### Greeting Domain
+
+`INBUCKET_POP3_DOMAIN`
+
+The domain used in the POP3 greeting:
+
+    +OK Inbucket POP3 server ready <26641.1522000423@domain>
+
+Most POP3 clients appear to ignore this value.
+
+- Default: `inbucket`
+
+### Network Idle Timeout
+
+`INBUCKET_POP3_TIMEOUT`
+
+Delay before closing an idle POP3 connection.  The POP3 RFC recommends 600
+seconds.  Consider reducing this *significantly* if you plan to expose Inbucket
+to the public internet.
+
+- Default: `600s`
+- Values: Duration ending in `s` for seconds, `m` for minutes
+
+
+## Web
+
+### Address and Port
+
+`INBUCKET_WEB_ADDR`
+
+The IPv4 address and TCP port number the HTTP server should listen on, separated
+by a colon.  Some operating systems may prevent Inbucket from listening on port
+80 without escalated privileges.  Using an IP address of 0.0.0.0 will cause
+Inbucket to listen on all available network interfaces.
+
+- Default: `0.0.0.0:9000`
+
+### Base Path
+
+`INBUCKET_WEB_BASEPATH`
+
+Base path prefix for UI and API URLs.  This option is used when you wish to
+root all Inbucket URLs to a specific path when placing it behind a
+reverse-proxy.
+
+For example, setting the base path to `prefix` will move:
+- the Inbucket status page from `/status` to `/prefix/status`,
+- Bob's mailbox from `/m/bob` to `/prefix/m/bob`, and
+- the REST API from `/api/v1/*` to `/prefix/api/v1/*`.
+
+*Note:* This setting will not work correctly when running Inbucket via the npm
+development server.
+
+- Default: None
+
+### UI Directory
+
+`INBUCKET_WEB_UIDIR`
+
+This directory contains the templates and static assets for the web user
+interface.  You will need to change this if the current working directory
+doesn't contain the `ui` directory at startup.
+
+Inbucket will load templates from the `templates` sub-directory, and serve
+static assets from the `static` sub-directory.
+
+- Default: `ui/dist`
+- Values: Operating system specific path syntax
+
+### Greeting HTML File
+
+`INBUCKET_WEB_GREETINGFILE`
+
+The content of the greeting file will be injected into the front page of
+Inbucket.  It can be used to instruct users on how to send mail into your
+Inbucket installation, as well as link to REST documentation, etc.
+
+- Default: `ui/greeting.html`
+
+### Monitor Visible
+
+`INBUCKET_WEB_MONITORVISIBLE`
+
+If true, the Monitor tab will be available, allowing users to observe all
+messages received by Inbucket as they arrive.  Disabling the monitor facilitates
+security through obscurity.
+
+This setting has no impact on the availability of the underlying WebSocket,
+which may be used by other parts of the Inbucket interface or continuous
+integration tests.
+
+- Default: `true`
+- Values: `true` or `false`
+
+### Monitor History
+
+`INBUCKET_WEB_MONITORHISTORY`
+
+The number of messages to remember on the *server* for new Monitor clients.
+Does not impact the amount of *new* messages displayed by the Monitor.
+Increasing this has no appreciable impact on memory use, but may slow down the
+Monitor user interface.
+
+This setting has the same effect on the amount of messages available via
+WebSocket.
+
+Setting to 0 will disable the monitor, but will probably break new mail
+notifications in the web interface when I finally get around to implementing
+them.
+
+- Default: `30`
+- Values: Integer greater than or equal to 0
+
+### Performance Profiling & Debug Tools
+
+`INBUCKET_WEB_PPROF`
+
+If true, Go's pprof package will be installed to the `/debug/pprof` URI.  This
+exposes detailed memory and CPU performance data for debugging Inbucket.  If you
+enable this option, please make sure it is not exposed to the public internet,
+as its use can significantly impact performance.
+
+For example usage, see https://golang.org/pkg/net/http/pprof/
+
+- Default: `false`
+- Values: `true` or `false`
+
+
+## Storage
+
+### Type
+
+`INBUCKET_STORAGE_TYPE`
+
+Selects the storage implementation to use.  Currently Inbucket supports two:
+
+- `file`: stores messages as individual files in a nested directory structure
+  based on the hash of the mailbox name.  Each mailbox also includes an index
+  file to speed up enumeration of the mailbox contents.
+- `memory`: stores messages in RAM, they will be lost if Inbucket is restarted,
+  or crashes, etc.
+
+File storage is recommended for larger/shared installations.  Memory is better
+suited to desktop or continuous integration test use cases.
+
+- Default: `memory`
+- Values: `file` or `memory`
+
+### Parameters
+
+`INBUCKET_STORAGE_PARAMS`
+
+Parameters specific to the storage type selected.  Formatted as a comma
+separated list of key:value pairs.
+
+- Default: None
+- Examples: `maxkb:10240` or `path:/tmp/inbucket`
+
+#### `file` type parameters
+
+- `path`: Operating system specific path to the directory where mail should be
+  stored.  `$` characters will be replaced with `:` in the final path value,
+  allowing Windows drive letters, i.e. `D$\inbucket`.
+
+#### `memory` type parameters
+
+- `maxkb`: Maximum size of the mail store in kilobytes.  The oldest messages in
+  the store will be deleted to enforce the limit.  In-memory storage has some
+  overhead, for now it is recommended to set this to half the total amount of
+  memory you are willing to allocate to Inbucket.
+
+### Retention Period
+
+`INBUCKET_STORAGE_RETENTIONPERIOD`
+
+If set, Inbucket will scan the contents of its mail store once per minute,
+removing messages older than this.  This will be enforced regardless of the type
+of storage configured.
+
+- Default: `24h`
+- Values: Duration ending in `m` for minutes, `h` for hours.  Should be
+  significantly longer than one minute, or `0` to disable.
+
+### Retention Sleep
+
+`INBUCKET_STORAGE_RETENTIONSLEEP`
+
+Duration to sleep between scanning each mailbox for expired messages.
+Increasing this number will reduce disk thrashing, but extend the length of time
+required to complete a scan of the entire mail store.
+
+This delay is still enforced for memory stores, but could be reduced from the
+default.  Setting to `0` may degrade performance of HTTP/SMTP/POP3 services.
+
+- Default: `50ms`
+- Values: Duration ending in `ms` for milliseconds, `s` for seconds
+
+### Per Mailbox Message Cap
+
+`INBUCKET_STORAGE_MAILBOXMSGCAP`
+
+Maximum messages allowed in a single mailbox, exceeding this will cause older
+messages to be deleted from the mailbox.
+
+- Default: `500`
+- Values: Positive integer, or `0` to disable

etc/dev-start.sh

@@ -0,0 +1,36 @@
+#!/bin/sh
+# dev-start.sh
+# description: Developer friendly Inbucket configuration
+
+export INBUCKET_LOGLEVEL="debug"
+#export INBUCKET_MAILBOXNAMING="domain"
+export INBUCKET_SMTP_REJECTDOMAINS="bad-actors.local"
+#export INBUCKET_SMTP_DEFAULTACCEPT="false"
+export INBUCKET_SMTP_ACCEPTDOMAINS="good-actors.local"
+export INBUCKET_SMTP_DISCARDDOMAINS="bitbucket.local"
+#export INBUCKET_SMTP_DEFAULTSTORE="false"
+export INBUCKET_SMTP_STOREDOMAINS="important.local"
+export INBUCKET_WEB_TEMPLATECACHE="false"
+export INBUCKET_WEB_COOKIEAUTHKEY="not-secret"
+export INBUCKET_WEB_UIDIR="ui/dist"
+#export INBUCKET_WEB_MONITORVISIBLE="false"
+#export INBUCKET_WEB_BASEPATH="prefix"
+export INBUCKET_STORAGE_TYPE="file"
+export INBUCKET_STORAGE_PARAMS="path:/tmp/inbucket"
+export INBUCKET_STORAGE_RETENTIONPERIOD="3h"
+export INBUCKET_STORAGE_MAILBOXMSGCAP="300"
+
+if ! test -x ./inbucket; then
+  echo "$PWD/inbucket not found/executable!" >&2
+  echo "Run this script from the inbucket root directory after running make." >&2
+  exit 1
+fi
+
+index="$INBUCKET_WEB_UIDIR/index.html"
+if ! test -f "$index"; then
+  echo "$index does not exist!" >&2
+  echo "Run 'yarn build' from the 'ui' directory." >&2
+  exit 1
+fi
+
+exec ./inbucket $*

etc/devel.conf

@@ -1,129 +0,0 @@
-# devel.conf
-# Sample development configuration
-
-#############################################################################
-[DEFAULT]
-
-# Not used directly, but is typically referenced below in %()s format.
-install.dir=.
-default.domain=inbucket.local
-
-#############################################################################
-[logging]
-
-# Options from least to most verbose: ERROR, WARN, INFO, TRACE
-level=TRACE
-
-#############################################################################
-[smtp]
-
-# IPv4 address to listen for SMTP connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for SMTP connections on.
-ip4.port=2500
-
-# used in SMTP greeting
-domain=%(default.domain)s
-
-# optional: mail sent to accounts at this domain will not be stored,
-# for mixed use (content and load testing)
-domain.nostore=bitbucket.local
-
-# Maximum number of RCPT TO: addresses we allow from clients, the SMTP
-# RFC recommends this be at least 100.
-max.recipients=100
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, SMTP RFC recommends at least 5 minutes (300 seconds).
-max.idle.seconds=30
-
-# Maximum allowable size of message body in bytes (including attachments)
-max.message.bytes=20480000
-
-# Should we place messages into the datastore, or just throw them away
-# (for load testing): true or false
-store.messages=true
-
-#############################################################################
-[pop3]
-
-# IPv4 address to listen for POP3 connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for POP3 connections on.
-ip4.port=1100
-
-# used in POP3 greeting
-domain=%(default.domain)s
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, POP3 RFC requires at least 10 minutes (600 seconds).
-max.idle.seconds=600
-
-#############################################################################
-[web]
-
-# IPv4 address to serve HTTP web interface on
-ip4.address=0.0.0.0
-
-# IPv4 port to serve HTTP web interface on
-ip4.port=9000
-
-# Name of web theme to use
-theme=bootstrap
-
-# Prompt displayed between the mailbox entry field and View button. Leave
-# empty or comment out to hide the prompt.
-mailbox.prompt=@inbucket
-
-# Path to the selected themes template files
-template.dir=%(install.dir)s/themes/%(theme)s/templates
-
-# Should we cache parsed templates (set to false during theme dev)
-template.cache=false
-
-# Path to the selected themes public (static) files
-public.dir=%(install.dir)s/themes/%(theme)s/public
-
-# Path to the greeting HTML displayed on front page, can be moved out of
-# installation dir for customization
-greeting.file=%(install.dir)s/themes/greeting.html
-
-# Key used to sign session cookie data so that it cannot be tampered with.
-# If this is left unset, Inbucket will generate a random key at startup
-# and previous sessions will be invalidated.
-cookie.auth.key=secret-inbucket-session-cookie-key
-
-# Enable or disable the live message monitor tab for the web UI. This will let
-# anybody see all messages delivered to Inbucket.  This setting has no impact
-# on the availability of the underlying WebSocket.
-monitor.visible=true
-
-# How many historical message headers should be cached for display by new
-# monitor connections.  It does not limit the number of messages displayed by
-# the browser once the monitor is open; all freshly received messages will be
-# appended to the on screen list.  This setting also affects the underlying
-# API/WebSocket.
-monitor.history=30
-
-#############################################################################
-[datastore]
-
-# Path to the datastore, mail will be written into subdirectories
-path=/tmp/inbucket
-
-# How many minutes after receipt should a message be stored until it's
-# automatically purged.  To retain messages until manually deleted, set this
-# to 0
-retention.minutes=0
-
-# How many milliseconds to sleep after purging messages from a mailbox.
-# This should help reduce disk I/O when there are a large number of messages
-# to purge.
-retention.sleep.millis=100
-
-# Maximum number of messages we will store in a single mailbox. If this
-# number is exceeded, the oldest message in the box will be deleted each
-# time a new message is received for it.
-mailbox.message.cap=100

etc/docker/defaults/greeting.html

@@ -1,7 +1,9 @@
+<h1>Welcome to Inbucket</h1>
+
 <p>Inbucket is an email testing service; it will accept email for any email
 address and make it available to view without a password.</p>
 
-<p>To view email for a particular address, enter the username portion
+<p>To view messages for a particular address, enter the username portion
 of the address into the box on the upper right and click <em>View</em>.</p>
 
 <p>This instance of Inbucket is running inside of a <a
@@ -11,5 +13,7 @@ of 300 messages per mailbox - the oldest messages will be deleted to stay under
 that limit.</p>
 
 <p>Messages addressed to any recipient in the <code>@bitbucket.local</code>
-domain will be accepted but not written to disk.  Use this domain for load or
-soak testing your application.</p>
+domain will be accepted, but immediately <b>discarded</b> without being written
+to disk. Use this domain for load or soak testing your application.  Inbucket
+will retain mail for any other domain by default, i.e.
+<code>@inbucket.local</code>.</p>

etc/docker/defaults/inbucket.conf

@@ -1,131 +0,0 @@
-# inbucket.conf
-# Configuration for Inbucket inside of Docker
-#
-# These should be reasonable defaults for a production install of Inbucket
-
-#############################################################################
-[DEFAULT]
-
-# Not used directly, but is typically referenced below in %()s format.
-install.dir=/opt/inbucket
-default.domain=inbucket.local
-
-#############################################################################
-[logging]
-
-# Options from least to most verbose: ERROR, WARN, INFO, TRACE
-level=INFO
-
-#############################################################################
-[smtp]
-
-# IPv4 address to listen for SMTP connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for SMTP connections on.
-ip4.port=10025
-
-# used in SMTP greeting
-domain=%(default.domain)s
-
-# optional: mail sent to accounts at this domain will not be stored,
-# for mixed use (content and load testing)
-domain.nostore=bitbucket.local
-
-# Maximum number of RCPT TO: addresses we allow from clients, the SMTP
-# RFC recommends this be at least 100.
-max.recipients=100
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, SMTP RFC recommends at least 5 minutes (300 seconds).
-max.idle.seconds=300
-
-# Maximum allowable size of message body in bytes (including attachments)
-max.message.bytes=2048000
-
-# Should we place messages into the datastore, or just throw them away
-# (for load testing): true or false
-store.messages=true
-
-#############################################################################
-[pop3]
-
-# IPv4 address to listen for POP3 connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for POP3 connections on.
-ip4.port=10110
-
-# used in POP3 greeting
-domain=%(default.domain)s
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, POP3 RFC requires at least 10 minutes (600 seconds).
-max.idle.seconds=600
-
-#############################################################################
-[web]
-
-# IPv4 address to serve HTTP web interface on
-ip4.address=0.0.0.0
-
-# IPv4 port to serve HTTP web interface on
-ip4.port=10080
-
-# Name of web theme to use
-theme=bootstrap
-
-# Prompt displayed between the mailbox entry field and View button. Leave
-# empty or comment out to hide the prompt.
-mailbox.prompt=@inbucket
-
-# Path to the selected themes template files
-template.dir=%(install.dir)s/themes/%(theme)s/templates
-
-# Should we cache parsed templates (set to false during theme dev)
-template.cache=true
-
-# Path to the selected themes public (static) files
-public.dir=%(install.dir)s/themes/%(theme)s/public
-
-# Path to the greeting HTML displayed on front page, can be moved out of
-# installation dir for customization
-greeting.file=/con/configuration/greeting.html
-
-# Key used to sign session cookie data so that it cannot be tampered with.
-# If this is left unset, Inbucket will generate a random key at startup
-# and previous sessions will be invalidated.
-#cookie.auth.key=secret-inbucket-session-cookie-key
-
-# Enable or disable the live message monitor tab for the web UI. This will let
-# anybody see all messages delivered to Inbucket.  This setting has no impact
-# on the availability of the underlying WebSocket.
-monitor.visible=true
-
-# How many historical message headers should be cached for display by new
-# monitor connections.  It does not limit the number of messages displayed by
-# the browser once the monitor is open; all freshly received messages will be
-# appended to the on screen list.  This setting also affects the underlying
-# API/WebSocket.
-monitor.history=30
-
-#############################################################################
-[datastore]
-
-# Path to the datastore, mail will be written into subdirectories
-path=/con/data
-
-# How many minutes after receipt should a message be stored until it's
-# automatically purged.  To retain messages until manually deleted, set this
-# to 0
-retention.minutes=4320
-
-# How many milliseconds to sleep after purging messages from a mailbox.
-# This should help reduce disk I/O when there are a large number of messages
-# to purge.
-retention.sleep.millis=100
-
-# Maximum number of messages we will store in a single mailbox. If this
-# number is exceeded, the oldest message in the box will be deleted each
-# time a new message is received for it.
-mailbox.message.cap=300

etc/docker/defaults/start-inbucket.sh

@@ -2,8 +2,9 @@
 # start-inbucket.sh
 # description: start inbucket (runs within a docker container)
 
+INBUCKET_HOME="/opt/inbucket"
 CONF_SOURCE="$INBUCKET_HOME/defaults"
-CONF_TARGET="/con/configuration"
+CONF_TARGET="/config"
 
 set -eo pipefail
 
@@ -18,7 +19,6 @@ install_default_config() {
   fi
 }
 
-install_default_config "inbucket.conf"
 install_default_config "greeting.html"
 
 exec "$INBUCKET_HOME/bin/inbucket" $* 

etc/docker/docker-run.sh

@@ -3,7 +3,7 @@
 # description: Launch Inbucket's docker image
 
 # Docker Image Tag
-IMAGE="jhillyerd/inbucket"
+IMAGE="inbucket/inbucket:edge"
 
 # Ports exposed on host:
 PORT_HTTP=9000
@@ -12,9 +12,9 @@ PORT_POP3=1100
 
 # Volumes exposed on host:
 VOL_CONFIG="/tmp/inbucket/config"
-VOL_DATA="/tmp/inbucket/data"
+VOL_DATA="/tmp/inbucket/storage"
 
-set -eo pipefail
+set -e
 
 main() {
   local run_opts=""
@@ -25,6 +25,9 @@ main() {
         usage
         exit
         ;;
+      -b)
+        build
+        ;;
       -r)
         reset
         ;;
@@ -38,25 +41,34 @@ main() {
     esac
   done
 
+  set -x
+
   docker run $run_opts \
-    -p $PORT_HTTP:10080 \
-    -p $PORT_SMTP:10025 \
-    -p $PORT_POP3:10110 \
-    -v "$VOL_CONFIG:/con/configuration" \
-    -v "$VOL_DATA:/con/data" \
+    -p $PORT_HTTP:9000 \
+    -p $PORT_SMTP:2500 \
+    -p $PORT_POP3:1100 \
+    -v "$VOL_CONFIG:/config" \
+    -v "$VOL_DATA:/storage" \
     "$IMAGE"
 }
 
 usage() {
   echo "$0 [options]" 2>&1
+  echo "  -b    build - build image before starting" 2>&1
   echo "  -d    detach - detach and print container ID" 2>&1
   echo "  -r    reset - purge config and data before startup" 2>&1
   echo "  -h    help - print this message" 2>&1
 }
 
+build() {
+  echo "Building $IMAGE"
+  docker build . -t "$IMAGE"
+  echo
+}
+
 reset() {
-  /bin/rm -rf "$VOL_CONFIG"
-  /bin/rm -rf "$VOL_DATA"
+  rm -rf "$VOL_CONFIG"
+  rm -rf "$VOL_DATA"
 }
 
 main $*

etc/docker/install.sh

@@ -1,51 +0,0 @@
-#!/bin/sh
-# install.sh
-# description: Build, test, and install Inbucket. Should be executed inside a Docker container.
-
-set -eo pipefail
-
-installdir="$INBUCKET_HOME"
-srcdir="$INBUCKET_SRC"
-bindir="$installdir/bin"
-defaultsdir="$installdir/defaults"
-contextdir="/con/context"
-
-echo "### Installing OS Build Dependencies"
-apk add --no-cache --virtual .build-deps git
-
-# Setup
-export GOBIN="$bindir"
-cd "$srcdir"
-# Fetch tags for describe
-git fetch -t
-builddate="$(date -Iseconds)"
-buildver="$(git describe --tags --always)"
-
-# Build
-go clean
-echo "### Fetching Dependencies"
-go get -t -v ./...
-
-echo "### Testing Inbucket"
-go test ./...
-
-echo "### Building Inbucket"
-go build -o inbucket -ldflags "-X 'main.version=$buildver' -X 'main.date=$builddate'" -v .
-
-echo "### Installing Inbucket"
-set -x
-mkdir -p "$bindir"
-install inbucket "$bindir"
-mkdir -p "$contextdir"
-install etc/docker/defaults/start-inbucket.sh "$contextdir"
-cp -r themes "$installdir/"
-mkdir -p "$defaultsdir"
-cp etc/docker/defaults/inbucket.conf "$defaultsdir"
-cp etc/docker/defaults/greeting.html "$defaultsdir"
-set +x
-
-echo "### Removing OS Build Dependencies"
-apk del .build-deps
-
-echo "### Removing $GOPATH"
-rm -rf "$GOPATH"

etc/homebrew/inbucket.conf

@@ -1,131 +0,0 @@
-# inbucket.conf
-# homebrew inbucket configuration
-# {{}} values will be replaced during installation
-
-#############################################################################
-[DEFAULT]
-
-# Not used directly, but is typically referenced below in %()s format.
-default.domain=inbucket.local
-themes.dir={{HOMEBREW_PREFIX}}/share/inbucket/themes
-datastore.dir={{HOMEBREW_PREFIX}}/var/inbucket/datastore
-
-#############################################################################
-[logging]
-
-# Options from least to most verbose: ERROR, WARN, INFO, TRACE
-level=INFO
-
-#############################################################################
-[smtp]
-
-# IPv4 address to listen for SMTP connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for SMTP connections on.
-ip4.port=2500
-
-# used in SMTP greeting
-domain=%(default.domain)s
-
-# optional: mail sent to accounts at this domain will not be stored,
-# for mixed use (content and load testing)
-domain.nostore=bitbucket.local
-
-# Maximum number of RCPT TO: addresses we allow from clients, the SMTP
-# RFC recommends this be at least 100.
-max.recipients=100
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, SMTP RFC recommends at least 5 minutes (300 seconds).
-max.idle.seconds=300
-
-# Maximum allowable size of message body in bytes (including attachments)
-max.message.bytes=2048000
-
-# Should we place messages into the datastore, or just throw them away
-# (for load testing): true or false
-store.messages=true
-
-#############################################################################
-[pop3]
-
-# IPv4 address to listen for POP3 connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for POP3 connections on.
-ip4.port=1100
-
-# used in POP3 greeting
-domain=%(default.domain)s
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, POP3 RFC requires at least 10 minutes (600 seconds).
-max.idle.seconds=600
-
-#############################################################################
-[web]
-
-# IPv4 address to serve HTTP web interface on
-ip4.address=0.0.0.0
-
-# IPv4 port to serve HTTP web interface on
-ip4.port=9000
-
-# Name of web theme to use
-theme=bootstrap
-
-# Prompt displayed between the mailbox entry field and View button. Leave
-# empty or comment out to hide the prompt.
-mailbox.prompt=@inbucket
-
-# Path to the selected themes template files
-template.dir=%(themes.dir)s/%(theme)s/templates
-
-# Should we cache parsed templates (set to false during theme dev)
-template.cache=true
-
-# Path to the selected themes public (static) files
-public.dir=%(themes.dir)s/%(theme)s/public
-
-# Path to the greeting HTML displayed on front page, can be moved out of
-# installation dir for customization
-greeting.file=%(themes.dir)s/greeting.html
-
-# Key used to sign session cookie data so that it cannot be tampered with.
-# If this is left unset, Inbucket will generate a random key at startup
-# and previous sessions will be invalidated.
-cookie.auth.key=secret-inbucket-session-cookie-key
-
-# Enable or disable the live message monitor tab for the web UI. This will let
-# anybody see all messages delivered to Inbucket.  This setting has no impact
-# on the availability of the underlying WebSocket.
-monitor.visible=true
-
-# How many historical message headers should be cached for display by new
-# monitor connections.  It does not limit the number of messages displayed by
-# the browser once the monitor is open; all freshly received messages will be
-# appended to the on screen list.  This setting also affects the underlying
-# API/WebSocket.
-monitor.history=30
-
-#############################################################################
-[datastore]
-
-# Path to the datastore, mail will be written into subdirectories
-path=%(datastore.dir)s
-
-# How many minutes after receipt should a message be stored until it's
-# automatically purged.  To retain messages until manually deleted, set this
-# to 0
-retention.minutes=10080
-
-# How many milliseconds to sleep after purging messages from a mailbox.
-# This should help reduce disk I/O when there are a large number of messages
-# to purge.
-retention.sleep.millis=100
-
-# Maximum number of messages we will store in a single mailbox. If this
-# number is exceeded, the oldest message in the box will be deleted each
-# time a new message is received for it.
-mailbox.message.cap=100

etc/inbucket.conf

@@ -1,129 +0,0 @@
-# inbucket.conf
-# Sample inbucket configuration
-
-#############################################################################
-[DEFAULT]
-
-# Not used directly, but is typically referenced below in %()s format.
-install.dir=.
-default.domain=inbucket.local
-
-#############################################################################
-[logging]
-
-# Options from least to most verbose: ERROR, WARN, INFO, TRACE
-level=INFO
-
-#############################################################################
-[smtp]
-
-# IPv4 address to listen for SMTP connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for SMTP connections on.
-ip4.port=2500
-
-# used in SMTP greeting
-domain=%(default.domain)s
-
-# optional: mail sent to accounts at this domain will not be stored,
-# for mixed use (content and load testing)
-#domain.nostore=bitbucket.local
-
-# Maximum number of RCPT TO: addresses we allow from clients, the SMTP
-# RFC recommends this be at least 100.
-max.recipients=100
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, SMTP RFC recommends at least 5 minutes (300 seconds).
-max.idle.seconds=300
-
-# Maximum allowable size of message body in bytes (including attachments)
-max.message.bytes=2048000
-
-# Should we place messages into the datastore, or just throw them away
-# (for load testing): true or false
-store.messages=true
-
-#############################################################################
-[pop3]
-
-# IPv4 address to listen for POP3 connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for POP3 connections on.
-ip4.port=1100
-
-# used in POP3 greeting
-domain=%(default.domain)s
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, POP3 RFC requires at least 10 minutes (600 seconds).
-max.idle.seconds=600
-
-#############################################################################
-[web]
-
-# IPv4 address to serve HTTP web interface on
-ip4.address=0.0.0.0
-
-# IPv4 port to serve HTTP web interface on
-ip4.port=9000
-
-# Name of web theme to use
-theme=bootstrap
-
-# Prompt displayed between the mailbox entry field and View button. Leave
-# empty or comment out to hide the prompt.
-mailbox.prompt=@inbucket
-
-# Path to the selected themes template files
-template.dir=%(install.dir)s/themes/%(theme)s/templates
-
-# Should we cache parsed templates (set to false during theme dev)
-template.cache=true
-
-# Path to the selected themes public (static) files
-public.dir=%(install.dir)s/themes/%(theme)s/public
-
-# Path to the greeting HTML displayed on front page, can be moved out of
-# installation dir for customization
-greeting.file=%(install.dir)s/themes/greeting.html
-
-# Key used to sign session cookie data so that it cannot be tampered with.
-# If this is left unset, Inbucket will generate a random key at startup
-# and previous sessions will be invalidated.
-#cookie.auth.key=secret-inbucket-session-cookie-key
-
-# Enable or disable the live message monitor tab for the web UI. This will let
-# anybody see all messages delivered to Inbucket.  This setting has no impact
-# on the availability of the underlying WebSocket.
-monitor.visible=true
-
-# How many historical message headers should be cached for display by new
-# monitor connections.  It does not limit the number of messages displayed by
-# the browser once the monitor is open; all freshly received messages will be
-# appended to the on screen list.  This setting also affects the underlying
-# API/WebSocket.
-monitor.history=30
-
-#############################################################################
-[datastore]
-
-# Path to the datastore, mail will be written into subdirectories
-path=/tmp/inbucket
-
-# How many minutes after receipt should a message be stored until it's
-# automatically purged.  To retain messages until manually deleted, set this
-# to 0
-retention.minutes=240
-
-# How many milliseconds to sleep after purging messages from a mailbox.
-# This should help reduce disk I/O when there are a large number of messages
-# to purge.
-retention.sleep.millis=100
-
-# Maximum number of messages we will store in a single mailbox. If this
-# number is exceeded, the oldest message in the box will be deleted each
-# time a new message is received for it.
-mailbox.message.cap=500

etc/linux/inbucket.service

@@ -0,0 +1,33 @@
+[Unit]
+Description=Inbucket Disposable Email Service
+After=network.target
+
+[Service]
+Type=simple
+User=daemon
+Group=daemon
+PermissionsStartOnly=true
+
+Environment=INBUCKET_LOGLEVEL=warn
+Environment=INBUCKET_SMTP_ADDR=0.0.0.0:2500
+Environment=INBUCKET_POP3_ADDR=0.0.0.0:1100
+Environment=INBUCKET_WEB_ADDR=0.0.0.0:9000
+Environment=INBUCKET_WEB_UIDIR=/usr/share/inbucket/ui
+Environment=INBUCKET_WEB_GREETINGFILE=/etc/inbucket/greeting.html
+Environment=INBUCKET_STORAGE_TYPE=file
+Environment=INBUCKET_STORAGE_PARAMS=path:/var/inbucket
+
+# Uncomment line below to use low numbered ports
+#ExecStartPre=/sbin/setcap 'cap_net_bind_service=+ep' /usr/bin/inbucket
+
+ExecStartPre=/bin/mkdir -p /var/inbucket
+ExecStartPre=/bin/chown daemon:daemon /var/inbucket
+
+ExecStart=/usr/bin/inbucket
+
+# Give SMTP connections time to drain
+TimeoutStopSec=20
+KillMode=mixed
+
+[Install]
+WantedBy=multi-user.target

etc/redhat/README

@@ -1,3 +0,0 @@
-Please see the RedHat installation guide on our website:
-
-http://www.inbucket.org/installation/redhat.html

etc/redhat/httpd-vhost.conf

@@ -1,17 +0,0 @@
-# Inbucket reverse proxy, Apache will forward requests from port 80
-# to Inbucket's built in web server on port 9000
-#
-# Replace SERVERFQDN with your servers fully qualified domain name
-<VirtualHost *:80>
-	ServerName SERVERFQDN
-	ProxyRequests off
-
-	<Proxy *>
-		Order allow,deny
-		Allow from all
-	</Proxy>
-
-	RewriteRule ^/$ http://SERVERFQDN:9000
-	ProxyPass / http://SERVERFQDN:9000/
-	ProxyPassReverse / http://SERVERFQDN:9000/
-</VirtualHost>

etc/redhat/inbucket-init.sh

@@ -1,117 +0,0 @@
-#!/bin/sh
-#
-# inbucket     Inbucket email testing service
-#
-# chkconfig: 2345 80 30
-# description: Inbucket is a disposable email service for testing email
-#              functionality of other applications.
-# processname: inbucket
-# pidfile: /var/run/inbucket/inbucket.pid
-
-### BEGIN INIT INFO
-# Provides: Inbucket service
-# Required-Start: $local_fs $network $remote_fs
-# Required-Stop: $local_fs $network $remote_fs
-# Default-Start: 2 3 4 5
-# Default-Stop: 0 1 6
-# Short-Description: start and stop inbucket
-# Description: Inbucket is a disposable email service for testing email
-#              functionality of other applications.
-#              moves mail from one machine to another.
-### END INIT INFO
-
-# Source function library.
-. /etc/rc.d/init.d/functions
-
-# Source networking configuration.
-. /etc/sysconfig/network
-
-RETVAL=0
-program=/opt/inbucket/inbucket
-prog=${program##*/}
-config=/etc/opt/inbucket.conf
-runas=inbucket
-
-lockfile=/var/lock/subsys/$prog
-pidfile=/var/run/$prog/$prog.pid
-logfile=/var/log/$prog.log
-
-conf_check() {
-    [ -x $program ] || exit 5
-    [ -f $config ] || exit 6
-}
-
-perms_check() {
-    mkdir -p /var/run/$prog
-    chown $runas: /var/run/$prog
-    touch $logfile
-    chown $runas: $logfile
-    # Allow bind to ports under 1024
-    setcap 'cap_net_bind_service=+ep' $program
-}
-
-start() {
-	[ "$EUID" != "0" ] && exit 4
-	# Check that networking is up.
-	[ ${NETWORKING} = "no" ] && exit 1
-	# Check config sanity
-	conf_check
-	perms_check
-	# Start daemon
-	echo -n $"Starting $prog: "
-	daemon --user $runas --pidfile $pidfile $program \
-	  -pidfile $pidfile -logfile $logfile $config \&
-	RETVAL=$?
-	[ $RETVAL -eq 0 ] && touch $lockfile
-        echo
-	return $RETVAL
-}
-
-stop() {
-	[ "$EUID" != "0" ] && exit 4
-	conf_check
-        # Stop daemon
-	echo -n $"Shutting down $prog: "
-	killproc -p "$pidfile" -d 15 "$program"
-	RETVAL=$?
-	[ $RETVAL -eq 0 ] && rm -f $lockfile $pidfile
-	echo
-	return $RETVAL
-}
-
-reload() {
-	[ "$EUID" != "0" ] && exit 4
-	echo -n $"Reloading $prog: "
-	killproc -p "$pidfile" "$program" -HUP
-	RETVAL=$?
-	echo
-	return $RETVAL
-}
-
-# See how we were called.
-case "$1" in
-  start)
-	[ -e $lockfile ] && exit 0
-	start
-	;;
-  stop)
-	[ -e $lockfile ] || exit 0
-	stop
-	;;
-  reload)
-	[ -e $lockfile ] || exit 0
-	reload
-	;;
-  restart|force-reload)
-	stop
-	start
-	;;
-  status)
-  	status -p $pidfile -l $(basename $lockfile) $prog
-	;;
-  *)
-	echo $"Usage: $0 {start|stop|restart|status}"
-	exit 2
-esac
-
-exit $?

etc/redhat/inbucket.logrotate

@@ -1,8 +0,0 @@
-/var/log/inbucket.log {
-  missingok
-  notifempty
-  create 0644 inbucket inbucket
-  postrotate
-    [ -x /bin/systemctl ] && /bin/systemctl reload inbucket >/dev/null 2>&1 || true
-  endscript
-}

etc/redhat/inbucket.service

@@ -1,20 +0,0 @@
-[Unit]
-Description=Inbucket Disposable Email Service
-After=network.target
-
-[Service]
-Type=simple
-User=inbucket
-Group=inbucket
-
-ExecStart=/opt/inbucket/inbucket -logfile /var/log/inbucket.log /etc/opt/inbucket.conf
-
-# Re-open log file after rotation
-ExecReload=/bin/kill -HUP $MAINPID
-
-# Give SMTP connections time to drain
-TimeoutStopSec=20
-KillMode=mixed
-
-[Install]
-WantedBy=multi-user.target

etc/rest-apiv1.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # rest-apiv1.sh
 # description: Script to access Inbucket REST API version 1
 

etc/swaks-tests/mime-errors.raw

@@ -0,0 +1,31 @@
+Date: %DATE%
+To: %TO_ADDRESS%
+From: %FROM_ADDRESS%
+Subject: MIME Errors
+Message-Id: <07B7061D-2676-487E-942E-C341CE4D13DC@makita.skynet>
+Content-Type: multipart/alternative; boundary="Enmime-Test-100"
+
+--Enmime-Test-100
+Content-Transfer-Encoding: 8bit
+Content-Type: text/plain; charset=us-ascii
+
+Using Unicode/UTF-8, you can write in emails and source code things such as
+
+Mathematics and sciences:
+
+  ∮ E⋅da = Q,  n → ∞, ∑ f(i) = ∏ g(i),      ⎧⎡⎛┌─────┐⎞⎤⎫
+                                            ⎪⎢⎜│a²+b³ ⎟⎥⎪
+  ∀x∈ℝ: ⌈x⌉ = −⌊−x⌋, α ∧ ¬β = ¬(¬α ∨ β),    ⎪⎢⎜│───── ⎟⎥⎪
+                                            ⎪⎢⎜⎷ c₈   ⎟⎥⎪
+  ℕ ⊆ ℕ₀ ⊂ ℤ ⊂ ℚ ⊂ ℝ ⊂ ℂ,                   ⎨⎢⎜       ⎟⎥⎬
+                                            ⎪⎢⎜ ∞     ⎟⎥⎪
+  ⊥ < a ≠ b ≡ c ≤ d ≪ ⊤ ⇒ (⟦A⟧ ⇔ ⟪B⟫),      ⎪⎢⎜ ⎲     ⎟⎥⎪
+                                            ⎪⎢⎜ ⎳aⁱ-bⁱ⎟⎥⎪
+  2H₂ + O₂ ⇌ 2H₂O, R = 4.7 kΩ, ⌀ 200 mm     ⎩⎣⎝i=1    ⎠⎦⎭
+
+Linguistics and dictionaries:
+
+  ði ıntəˈnæʃənəl fəˈnɛtık əsoʊsiˈeıʃn
+  Y [ˈʏpsilɔn], Yen [jɛn], Yoga [ˈjoːgɑ]
+
+--Enmime-Test-100

etc/swaks-tests/mime-inline.raw

@@ -0,0 +1,43 @@
+Subject: Inline attachment
+From: %FROM_ADDRESS%
+To: %TO_ADDRESS%
+Message-ID: <1234@example.com>
+Date: %DATE%
+Content-Type: multipart/mixed; boundary=boundary1
+
+--boundary1
+Content-Type: text/html; charset=utf-8
+Content-Transfer-Encoding: quoted-printable
+
+<!DOCTYPE html>
+<html>
+<head>
+<title>Hello World HTML</title>
+</head>
+<body>
+<h1 style=3D"color:red">Hello World</h1>
+</body>
+</html>
+
+--boundary1
+Content-Type: application/pdf; name=Hello-World.pdf
+Content-Transfer-Encoding: base64
+Content-Disposition: inline; name=Hello-World.pdf;
+ filename=Hello-World.pdf
+
+JVBERi0xLjQKJcK1wrYKCjEgMCBvYmoKPDwvVGl0bGUoSGVsbG8gV29ybGQpL0F1dGhvcihBZHJp
+dW0pPj4KZW5kb2JqCgoyIDAgb2JqCjw8L1R5cGUvQ2F0YWxvZy9QYWdlcyAzIDAgUj4+CmVuZG9i
+agoKMyAwIG9iago8PC9UeXBlL1BhZ2VzL01lZGlhQm94WzAgMCA1OTUgODQyXS9SZXNvdXJjZXM8
+PC9Gb250PDwvRjEgNCAwIFI+Pi9Qcm9jU2V0Wy9QREYvVGV4dF0+Pi9LaWRzWzUgMCBSXS9Db3Vu
+dCAxPj4KZW5kb2JqCgo0IDAgb2JqCjw8L1R5cGUvRm9udC9TdWJ0eXBlL1R5cGUxL0Jhc2VGb250
+L0hlbHZldGljYS9FbmNvZGluZy9XaW5BbnNpRW5jb2Rpbmc+PgplbmRvYmoKCjUgMCBvYmoKPDwv
+VHlwZS9QYWdlL1BhcmVudCAzIDAgUi9Db250ZW50cyA2IDAgUj4+CmVuZG9iagoKNiAwIG9iago8
+PC9MZW5ndGggNTEvRmlsdGVyL0ZsYXRlRGVjb2RlPj4Kc3RyZWFtCnic03czVDCxUAhJ43IK4TI3
+UjA3MVMISeHS8EjNyclXCM8vyknRVAjJ4nIN4QIA3FcKuwplbmRzdHJlYW0KZW5kb2JqCgp4cmVm
+CjAgNwowMDAwMDAwMDAwIDY1NTM2IGYgCjAwMDAwMDAwMTYgMDAwMDAgbiAKMDAwMDAwMDA3MSAw
+MDAwMCBuIAowMDAwMDAwMTE3IDAwMDAwIG4gCjAwMDAwMDAyNDIgMDAwMDAgbiAKMDAwMDAwMDMz
+MSAwMDAwMCBuIAowMDAwMDAwMzkwIDAwMDAwIG4gCgp0cmFpbGVyCjw8L1NpemUgNy9JbmZvIDEg
+MCBSL1Jvb3QgMiAwIFI+PgpzdGFydHhyZWYKNTA5CiUlRU9GCg==
+
+
+--boundary1--

etc/swaks-tests/run-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # run-tests.sh
 # description: Generate test emails for Inbucket
 
@@ -24,7 +24,7 @@ case "$1" in
     ;;
 esac
 
-export SWAKS_OPT_server="127.0.0.1:2500"
+export SWAKS_OPT_server="${SWAKS_OPT_server:-127.0.0.1:2500}"
 export SWAKS_OPT_to="$to@inbucket.local"
 
 # Basic test
@@ -56,3 +56,13 @@ swaks $* --data outlook.raw
 # Non-mime responsive HTML test
 swaks $* --data nonmime-html-responsive.raw
 swaks $* --data nonmime-html-inlined.raw
+
+# Incorrect charset, malformed final boundary
+swaks $* --data mime-errors.raw
+
+# IP RCPT domain
+swaks $* --to="swaks@[127.0.0.1]" --h-Subject: "IPv4 RCPT Address" --body text.txt
+swaks $* --to="swaks@[IPv6:2001:db8:aaaa:1::100]" --h-Subject: "IPv6 RCPT Address" --body text.txt
+
+# Inline attachment test
+swaks $* --data mime-inline.raw

etc/swaks-tests/utf8-subject.raw

@@ -1,6 +1,8 @@
 Date: %DATE%
-To: %TO_ADDRESS%
-From: %FROM_ADDRESS%
+To: %TO_ADDRESS%,
+  =?utf-8?B?VGVzdCBvZiDIh8myyqLIr8ihyarJtMqb?= <recipient@inbucket.org>
+From: =?utf-8?q?X-=C3=A4=C3=A9=C3=9F_Y-=C3=A4=C3=A9=C3=9F?=
+  <fromuser@inbucket.org>
 Subject: =?utf-8?B?VGVzdCBvZiDIh8myyqLIr8ihyarJtMqb?=
 Thread-Topic: =?utf-8?B?VGVzdCBvZiDIh8myyqLIr8ihyarJtMqb?=
 Thread-Index: Ac6+4nH7mOymA+1JRQyk2LQPe1bEcw==

etc/travis-deploy.sh

@@ -1,10 +0,0 @@
-#!/bin/bash
-# travis-deploy.sh
-# description: Trigger goreleaser deployment in correct build scenarios
-
-set -eo pipefail
-set -x
-
-if [[ "$TRAVIS_GO_VERSION" == "$DEPLOY_WITH_MAJOR."* ]]; then
-  curl -sL https://git.io/goreleaser | bash
-fi

etc/ubuntu/README

@@ -1,3 +0,0 @@
-Please see the Ubuntu installation guide on our website:
-
-http://www.inbucket.org/installation/ubuntu.html

etc/ubuntu/inbucket-upstart.conf

@@ -1,29 +0,0 @@
-# inbucket - disposable email service
-#
-# Inbucket is an SMTP server with a web interface for testing application
-# functionality
-
-description "inbucket - disposable email service"
-author      "http://jhillyerd.github.com/inbucket"
-
-start on (local-filesystems and net-device-up IFACE!=lo)
-stop on runlevel [!2345]
-
-env program=/opt/inbucket/inbucket
-env config=/etc/opt/inbucket.conf
-env logfile=/var/log/inbucket.log
-env runas=inbucket
-
-# Give SMTP connections time to drain
-kill timeout 20
-
-pre-start script
-  [ -x $program ]
-  [ -r $config ]
-  touch $logfile
-  chown $runas: $logfile
-  # Allow bind to ports under 1024
-  setcap 'cap_net_bind_service=+ep' $program
-end script
-
-exec start-stop-daemon --start --chuid $runas --exec $program -- -logfile $logfile $config

etc/ubuntu/inbucket.logrotate

@@ -1,8 +0,0 @@
-/var/log/inbucket.log {
-  missingok
-  notifempty
-  create 0644 inbucket inbucket
-  postrotate
-    [ -x /bin/systemctl ] && /bin/systemctl reload inbucket >/dev/null 2>&1 || true
-  endscript
-}

etc/ubuntu/inbucket.service

@@ -1,20 +0,0 @@
-[Unit]
-Description=Inbucket Disposable Email Service
-After=network.target
-
-[Service]
-Type=simple
-User=inbucket
-Group=inbucket
-
-ExecStart=/opt/inbucket/inbucket -logfile /var/log/inbucket.log /etc/opt/inbucket.conf
-
-# Re-open log file after rotation
-ExecReload=/bin/kill -HUP $MAINPID
-
-# Give SMTP connections time to drain
-TimeoutStopSec=20
-KillMode=mixed
-
-[Install]
-WantedBy=multi-user.target

etc/unix-sample.conf

@@ -1,129 +0,0 @@
-# inbucket.conf
-# Sample inbucket configuration
-
-#############################################################################
-[DEFAULT]
-
-# Not used directly, but is typically referenced below in %()s format.
-install.dir=/opt/inbucket
-default.domain=inbucket.local
-
-#############################################################################
-[logging]
-
-# Options from least to most verbose: ERROR, WARN, INFO, TRACE
-level=INFO
-
-#############################################################################
-[smtp]
-
-# IPv4 address to listen for SMTP connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for SMTP connections on.
-ip4.port=25
-
-# used in SMTP greeting
-domain=%(default.domain)s
-
-# optional: mail sent to accounts at this domain will not be stored,
-# for mixed use (content and load testing)
-#domain.nostore=bitbucket.local
-
-# Maximum number of RCPT TO: addresses we allow from clients, the SMTP
-# RFC recommends this be at least 100.
-max.recipients=100
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, SMTP RFC recommends at least 5 minutes (300 seconds).
-max.idle.seconds=300
-
-# Maximum allowable size of message body in bytes (including attachments)
-max.message.bytes=2048000
-
-# Should we place messages into the datastore, or just throw them away
-# (for load testing): true or false
-store.messages=true
-
-#############################################################################
-[pop3]
-
-# IPv4 address to listen for POP3 connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for POP3 connections on.
-ip4.port=110
-
-# used in POP3 greeting
-domain=%(default.domain)s
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, POP3 RFC requires at least 10 minutes (600 seconds).
-max.idle.seconds=600
-
-#############################################################################
-[web]
-
-# IPv4 address to serve HTTP web interface on
-ip4.address=0.0.0.0
-
-# IPv4 port to serve HTTP web interface on
-ip4.port=80
-
-# Name of web theme to use
-theme=bootstrap
-
-# Prompt displayed between the mailbox entry field and View button. Leave
-# empty or comment out to hide the prompt.
-mailbox.prompt=@inbucket
-
-# Path to the selected themes template files
-template.dir=%(install.dir)s/themes/%(theme)s/templates
-
-# Should we cache parsed templates (set to false during theme dev)
-template.cache=true
-
-# Path to the selected themes public (static) files
-public.dir=%(install.dir)s/themes/%(theme)s/public
-
-# Path to the greeting HTML displayed on front page, can be moved out of
-# installation dir for customization
-greeting.file=%(install.dir)s/themes/greeting.html
-
-# Key used to sign session cookie data so that it cannot be tampered with.
-# If this is left unset, Inbucket will generate a random key at startup
-# and previous sessions will be invalidated.
-#cookie.auth.key=secret-inbucket-session-cookie-key
-
-# Enable or disable the live message monitor tab for the web UI. This will let
-# anybody see all messages delivered to Inbucket.  This setting has no impact
-# on the availability of the underlying WebSocket.
-monitor.visible=true
-
-# How many historical message headers should be cached for display by new
-# monitor connections.  It does not limit the number of messages displayed by
-# the browser once the monitor is open; all freshly received messages will be
-# appended to the on screen list.  This setting also affects the underlying
-# API/WebSocket.
-monitor.history=30
-
-#############################################################################
-[datastore]
-
-# Path to the datastore, mail will be written into subdirectories
-path=/var/opt/inbucket
-
-# How many minutes after receipt should a message be stored until it's
-# automatically purged.  To retain messages until manually deleted, set this
-# to 0
-retention.minutes=240
-
-# How many milliseconds to sleep after purging messages from a mailbox.
-# This should help reduce disk I/O when there are a large number of messages
-# to purge.
-retention.sleep.millis=100
-
-# Maximum number of messages we will store in a single mailbox. If this
-# number is exceeded, the oldest message in the box will be deleted each
-# time a new message is received for it.
-mailbox.message.cap=500

etc/win-sample.conf

@@ -1,129 +0,0 @@
-# win-sample.conf
-# Sample inbucket configuration for Windows
-
-#############################################################################
-[DEFAULT]
-
-# Not used directly, but is typically referenced below in %()s format.
-install.dir=.
-default.domain=inbucket.local
-
-#############################################################################
-[logging]
-
-# Options from least to most verbose: ERROR, WARN, INFO, TRACE
-level=INFO
-
-#############################################################################
-[smtp]
-
-# IPv4 address to listen for SMTP connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for SMTP connections on.
-ip4.port=2500
-
-# used in SMTP greeting
-domain=%(default.domain)s
-
-# optional: mail sent to accounts at this domain will not be stored,
-# for mixed use (content and load testing)
-#domain.nostore=bitbucket.local
-
-# Maximum number of RCPT TO: addresses we allow from clients, the SMTP
-# RFC recommends this be at least 100.
-max.recipients=100
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, SMTP RFC recommends at least 5 minutes (300 seconds).
-max.idle.seconds=300
-
-# Maximum allowable size of message body in bytes (including attachments)
-max.message.bytes=2048000
-
-# Should we place messages into the datastore, or just throw them away
-# (for load testing): true or false
-store.messages=true
-
-#############################################################################
-[pop3]
-
-# IPv4 address to listen for POP3 connections on.
-ip4.address=0.0.0.0
-
-# IPv4 port to listen for POP3 connections on.
-ip4.port=1100
-
-# used in POP3 greeting
-domain=%(default.domain)s
-
-# How long we allow a network connection to be idle before hanging up on the
-# client, POP3 RFC requires at least 10 minutes (600 seconds).
-max.idle.seconds=600
-
-#############################################################################
-[web]
-
-# IPv4 address to serve HTTP web interface on
-ip4.address=0.0.0.0
-
-# IPv4 port to serve HTTP web interface on
-ip4.port=9000
-
-# Name of web theme to use
-theme=bootstrap
-
-# Prompt displayed between the mailbox entry field and View button. Leave
-# empty or comment out to hide the prompt.
-mailbox.prompt=@inbucket
-
-# Path to the selected themes template files
-template.dir=%(install.dir)s\themes\%(theme)s\templates
-
-# Should we cache parsed templates (set to false during theme dev)
-template.cache=true
-
-# Path to the selected themes public (static) files
-public.dir=%(install.dir)s\themes\%(theme)s\public
-
-# Path to the greeting HTML displayed on front page, can be moved out of
-# installation dir for customization
-greeting.file=%(install.dir)s\themes\greeting.html
-
-# Key used to sign session cookie data so that it cannot be tampered with.
-# If this is left unset, Inbucket will generate a random key at startup
-# and previous sessions will be invalidated.
-#cookie.auth.key=secret-inbucket-session-cookie-key
-
-# Enable or disable the live message monitor tab for the web UI. This will let
-# anybody see all messages delivered to Inbucket.  This setting has no impact
-# on the availability of the underlying WebSocket.
-monitor.visible=true
-
-# How many historical message headers should be cached for display by new
-# monitor connections.  It does not limit the number of messages displayed by
-# the browser once the monitor is open; all freshly received messages will be
-# appended to the on screen list.  This setting also affects the underlying
-# API/WebSocket.
-monitor.history=30
-
-#############################################################################
-[datastore]
-
-# Path to the datastore, mail will be written into subdirectories
-path=.\inbucket-data
-
-# How many minutes after receipt should a message be stored until it's
-# automatically purged.  To retain messages until manually deleted, set this
-# to 0
-retention.minutes=240
-
-# How many milliseconds to sleep after purging messages from a mailbox.
-# This should help reduce disk I/O when there are a large number of messages
-# to purge.
-retention.sleep.millis=100
-
-# Maximum number of messages we will store in a single mailbox. If this
-# number is exceeded, the oldest message in the box will be deleted each
-# time a new message is received for it.
-mailbox.message.cap=500

filestore/fmessage.go

@@ -1,270 +0,0 @@
-package filestore
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/mail"
-	"os"
-	"path/filepath"
-	"time"
-
-	"github.com/jhillyerd/enmime"
-	"github.com/jhillyerd/inbucket/datastore"
-	"github.com/jhillyerd/inbucket/log"
-)
-
-// FileMessage implements Message and contains a little bit of data about a
-// particular email message, and methods to retrieve the rest of it from disk.
-type FileMessage struct {
-	mailbox *FileMailbox
-	// Stored in GOB
-	Fid      string
-	Fdate    time.Time
-	Ffrom    string
-	Fto      []string
-	Fsubject string
-	Fsize    int64
-	// These are for creating new messages only
-	writable   bool
-	writerFile *os.File
-	writer     *bufio.Writer
-}
-
-// NewMessage creates a new FileMessage object and sets the Date and Id fields.
-// It will also delete messages over messageCap if configured.
-func (mb *FileMailbox) NewMessage() (datastore.Message, error) {
-	// Load index
-	if !mb.indexLoaded {
-		if err := mb.readIndex(); err != nil {
-			return nil, err
-		}
-	}
-
-	// Delete old messages over messageCap
-	if mb.store.messageCap > 0 {
-		for len(mb.messages) >= mb.store.messageCap {
-			log.Infof("Mailbox %q over configured message cap", mb.name)
-			if err := mb.messages[0].Delete(); err != nil {
-				log.Errorf("Error deleting message: %s", err)
-			}
-		}
-	}
-
-	date := time.Now()
-	id := generateID(date)
-	return &FileMessage{mailbox: mb, Fid: id, Fdate: date, writable: true}, nil
-}
-
-// ID gets the ID of the Message
-func (m *FileMessage) ID() string {
-	return m.Fid
-}
-
-// Date returns the date/time this Message was received by Inbucket
-func (m *FileMessage) Date() time.Time {
-	return m.Fdate
-}
-
-// From returns the value of the Message From header
-func (m *FileMessage) From() string {
-	return m.Ffrom
-}
-
-// To returns the value of the Message To header
-func (m *FileMessage) To() []string {
-	return m.Fto
-}
-
-// Subject returns the value of the Message Subject header
-func (m *FileMessage) Subject() string {
-	return m.Fsubject
-}
-
-// String returns a string in the form: "Subject()" from From()
-func (m *FileMessage) String() string {
-	return fmt.Sprintf("\"%v\" from %v", m.Fsubject, m.Ffrom)
-}
-
-// Size returns the size of the Message on disk in bytes
-func (m *FileMessage) Size() int64 {
-	return m.Fsize
-}
-
-func (m *FileMessage) rawPath() string {
-	return filepath.Join(m.mailbox.path, m.Fid+".raw")
-}
-
-// ReadHeader opens the .raw portion of a Message and returns a standard Go mail.Message object
-func (m *FileMessage) ReadHeader() (msg *mail.Message, err error) {
-	file, err := os.Open(m.rawPath())
-	if err != nil {
-		return nil, err
-	}
-	defer func() {
-		if err := file.Close(); err != nil {
-			log.Errorf("Failed to close %q: %v", m.rawPath(), err)
-		}
-	}()
-
-	reader := bufio.NewReader(file)
-	return mail.ReadMessage(reader)
-}
-
-// ReadBody opens the .raw portion of a Message and returns a MIMEBody object
-func (m *FileMessage) ReadBody() (body *enmime.Envelope, err error) {
-	file, err := os.Open(m.rawPath())
-	if err != nil {
-		return nil, err
-	}
-	defer func() {
-		if err := file.Close(); err != nil {
-			log.Errorf("Failed to close %q: %v", m.rawPath(), err)
-		}
-	}()
-
-	reader := bufio.NewReader(file)
-	mime, err := enmime.ReadEnvelope(reader)
-	if err != nil {
-		return nil, err
-	}
-	return mime, nil
-}
-
-// RawReader opens the .raw portion of a Message as an io.ReadCloser
-func (m *FileMessage) RawReader() (reader io.ReadCloser, err error) {
-	file, err := os.Open(m.rawPath())
-	if err != nil {
-		return nil, err
-	}
-	return file, nil
-}
-
-// ReadRaw opens the .raw portion of a Message and returns it as a string
-func (m *FileMessage) ReadRaw() (raw *string, err error) {
-	reader, err := m.RawReader()
-	if err != nil {
-		return nil, err
-	}
-	defer func() {
-		if err := reader.Close(); err != nil {
-			log.Errorf("Failed to close %q: %v", m.rawPath(), err)
-		}
-	}()
-
-	bodyBytes, err := ioutil.ReadAll(bufio.NewReader(reader))
-	if err != nil {
-		return nil, err
-	}
-	bodyString := string(bodyBytes)
-	return &bodyString, nil
-}
-
-// Append data to a newly opened Message, this will fail on a pre-existing Message and
-// after Close() is called.
-func (m *FileMessage) Append(data []byte) error {
-	// Prevent Appending to a pre-existing Message
-	if !m.writable {
-		return datastore.ErrNotWritable
-	}
-	// Open file for writing if we haven't yet
-	if m.writer == nil {
-		// Ensure mailbox directory exists
-		if err := m.mailbox.createDir(); err != nil {
-			return err
-		}
-		file, err := os.Create(m.rawPath())
-		if err != nil {
-			// Set writable false just in case something calls me a million times
-			m.writable = false
-			return err
-		}
-		m.writerFile = file
-		m.writer = bufio.NewWriter(file)
-	}
-	_, err := m.writer.Write(data)
-	m.Fsize += int64(len(data))
-	return err
-}
-
-// Close this Message for writing - no more data may be Appended.  Close() will also
-// trigger the creation of the .gob file.
-func (m *FileMessage) Close() error {
-	// nil out the writer fields so they can't be used
-	writer := m.writer
-	writerFile := m.writerFile
-	m.writer = nil
-	m.writerFile = nil
-
-	if writer != nil {
-		if err := writer.Flush(); err != nil {
-			return err
-		}
-	}
-	if writerFile != nil {
-		if err := writerFile.Close(); err != nil {
-			return err
-		}
-	}
-
-	// Fetch headers
-	body, err := m.ReadBody()
-	if err != nil {
-		return err
-	}
-
-	// Only public fields are stored in gob, hence starting with capital F
-	// Parse From address
-	if address, err := mail.ParseAddress(body.GetHeader("From")); err == nil {
-		m.Ffrom = address.String()
-	} else {
-		m.Ffrom = body.GetHeader("From")
-	}
-	m.Fsubject = body.GetHeader("Subject")
-
-	// Turn the To header into a slice
-	if addresses, err := body.AddressList("To"); err == nil {
-		for _, a := range addresses {
-			m.Fto = append(m.Fto, a.String())
-		}
-	} else {
-		m.Fto = []string{body.GetHeader("To")}
-	}
-
-	// Refresh the index before adding our message
-	err = m.mailbox.readIndex()
-	if err != nil {
-		return err
-	}
-
-	// Made it this far without errors, add it to the index
-	m.mailbox.messages = append(m.mailbox.messages, m)
-	return m.mailbox.writeIndex()
-}
-
-// Delete this Message from disk by removing it from the index and deleting the
-// raw files.
-func (m *FileMessage) Delete() error {
-	messages := m.mailbox.messages
-	for i, mm := range messages {
-		if m == mm {
-			// Slice around message we are deleting
-			m.mailbox.messages = append(messages[:i], messages[i+1:]...)
-			break
-		}
-	}
-	if err := m.mailbox.writeIndex(); err != nil {
-		return err
-	}
-
-	if len(m.mailbox.messages) == 0 {
-		// This was the last message, thus writeIndex() has removed the entire
-		// directory; we don't need to delete the raw file.
-		return nil
-	}
-
-	// There are still messages in the index
-	log.Tracef("Deleting %v", m.rawPath())
-	return os.Remove(m.rawPath())
-}

filestore/fstore.go

@@ -1,357 +0,0 @@
-package filestore
-
-import (
-	"bufio"
-	"encoding/gob"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"sync"
-	"time"
-
-	"github.com/jhillyerd/inbucket/config"
-	"github.com/jhillyerd/inbucket/datastore"
-	"github.com/jhillyerd/inbucket/log"
-	"github.com/jhillyerd/inbucket/stringutil"
-)
-
-// Name of index file in each mailbox
-const indexFileName = "index.gob"
-
-var (
-	// indexMx is locked while reading/writing an index file
-	//
-	// NOTE: This is a bottleneck because it's a single lock even if we have a
-	// million index files
-	indexMx = new(sync.RWMutex)
-
-	// dirMx is locked while creating/removing directories
-	dirMx = new(sync.Mutex)
-
-	// countChannel is filled with a sequential numbers (0000..9999), which are
-	// used by generateID() to generate unique message IDs.  It's global
-	// because we only want one regardless of the number of DataStore objects
-	countChannel = make(chan int, 10)
-)
-
-func init() {
-	// Start generator
-	go countGenerator(countChannel)
-}
-
-// Populates the channel with numbers
-func countGenerator(c chan int) {
-	for i := 0; true; i = (i + 1) % 10000 {
-		c <- i
-	}
-}
-
-// FileDataStore implements DataStore aand is the root of the mail storage
-// hiearchy.  It provides access to Mailbox objects
-type FileDataStore struct {
-	path       string
-	mailPath   string
-	messageCap int
-}
-
-// NewFileDataStore creates a new DataStore object using the specified path
-func NewFileDataStore(cfg config.DataStoreConfig) datastore.DataStore {
-	path := cfg.Path
-	if path == "" {
-		log.Errorf("No value configured for datastore path")
-		return nil
-	}
-	mailPath := filepath.Join(path, "mail")
-	if _, err := os.Stat(mailPath); err != nil {
-		// Mail datastore does not yet exist
-		if err = os.MkdirAll(mailPath, 0770); err != nil {
-			log.Errorf("Error creating dir %q: %v", mailPath, err)
-		}
-	}
-	return &FileDataStore{path: path, mailPath: mailPath, messageCap: cfg.MailboxMsgCap}
-}
-
-// DefaultFileDataStore creates a new DataStore object.  It uses the inbucket.Config object to
-// construct it's path.
-func DefaultFileDataStore() datastore.DataStore {
-	cfg := config.GetDataStoreConfig()
-	return NewFileDataStore(cfg)
-}
-
-// MailboxFor retrieves the Mailbox object for a specified email address, if the mailbox
-// does not exist, it will attempt to create it.
-func (ds *FileDataStore) MailboxFor(emailAddress string) (datastore.Mailbox, error) {
-	name, err := stringutil.ParseMailboxName(emailAddress)
-	if err != nil {
-		return nil, err
-	}
-	dir := stringutil.HashMailboxName(name)
-	s1 := dir[0:3]
-	s2 := dir[0:6]
-	path := filepath.Join(ds.mailPath, s1, s2, dir)
-	indexPath := filepath.Join(path, indexFileName)
-
-	return &FileMailbox{store: ds, name: name, dirName: dir, path: path,
-		indexPath: indexPath}, nil
-}
-
-// AllMailboxes returns a slice with all Mailboxes
-func (ds *FileDataStore) AllMailboxes() ([]datastore.Mailbox, error) {
-	mailboxes := make([]datastore.Mailbox, 0, 100)
-	infos1, err := ioutil.ReadDir(ds.mailPath)
-	if err != nil {
-		return nil, err
-	}
-	// Loop over level 1 directories
-	for _, inf1 := range infos1 {
-		if inf1.IsDir() {
-			l1 := inf1.Name()
-			infos2, err := ioutil.ReadDir(filepath.Join(ds.mailPath, l1))
-			if err != nil {
-				return nil, err
-			}
-			// Loop over level 2 directories
-			for _, inf2 := range infos2 {
-				if inf2.IsDir() {
-					l2 := inf2.Name()
-					infos3, err := ioutil.ReadDir(filepath.Join(ds.mailPath, l1, l2))
-					if err != nil {
-						return nil, err
-					}
-					// Loop over mailboxes
-					for _, inf3 := range infos3 {
-						if inf3.IsDir() {
-							mbdir := inf3.Name()
-							mbpath := filepath.Join(ds.mailPath, l1, l2, mbdir)
-							idx := filepath.Join(mbpath, indexFileName)
-							mb := &FileMailbox{store: ds, dirName: mbdir, path: mbpath,
-								indexPath: idx}
-							mailboxes = append(mailboxes, mb)
-						}
-					}
-				}
-			}
-		}
-	}
-
-	return mailboxes, nil
-}
-
-// FileMailbox implements Mailbox, manages the mail for a specific user and
-// correlates to a particular directory on disk.
-type FileMailbox struct {
-	store       *FileDataStore
-	name        string
-	dirName     string
-	path        string
-	indexLoaded bool
-	indexPath   string
-	messages    []*FileMessage
-}
-
-// Name of the mailbox
-func (mb *FileMailbox) Name() string {
-	return mb.name
-}
-
-// String renders the name and directory path of the mailbox
-func (mb *FileMailbox) String() string {
-	return mb.name + "[" + mb.dirName + "]"
-}
-
-// GetMessages scans the mailbox directory for .gob files and decodes them into
-// a slice of Message objects.
-func (mb *FileMailbox) GetMessages() ([]datastore.Message, error) {
-	if !mb.indexLoaded {
-		if err := mb.readIndex(); err != nil {
-			return nil, err
-		}
-	}
-
-	messages := make([]datastore.Message, len(mb.messages))
-	for i, m := range mb.messages {
-		messages[i] = m
-	}
-	return messages, nil
-}
-
-// GetMessage decodes a single message by Id and returns a Message object
-func (mb *FileMailbox) GetMessage(id string) (datastore.Message, error) {
-	if !mb.indexLoaded {
-		if err := mb.readIndex(); err != nil {
-			return nil, err
-		}
-	}
-
-	if id == "latest" && len(mb.messages) != 0 {
-		return mb.messages[len(mb.messages)-1], nil
-	}
-
-	for _, m := range mb.messages {
-		if m.Fid == id {
-			return m, nil
-		}
-	}
-
-	return nil, datastore.ErrNotExist
-}
-
-// Purge deletes all messages in this mailbox
-func (mb *FileMailbox) Purge() error {
-	mb.messages = mb.messages[:0]
-	return mb.writeIndex()
-}
-
-// readIndex loads the mailbox index data from disk
-func (mb *FileMailbox) readIndex() error {
-	// Clear message slice, open index
-	mb.messages = mb.messages[:0]
-	// Lock for reading
-	indexMx.RLock()
-	defer indexMx.RUnlock()
-	// Check if index exists
-	if _, err := os.Stat(mb.indexPath); err != nil {
-		// Does not exist, but that's not an error in our world
-		log.Tracef("Index %v does not exist (yet)", mb.indexPath)
-		mb.indexLoaded = true
-		return nil
-	}
-	file, err := os.Open(mb.indexPath)
-	if err != nil {
-		return err
-	}
-	defer func() {
-		if err := file.Close(); err != nil {
-			log.Errorf("Failed to close %q: %v", mb.indexPath, err)
-		}
-	}()
-
-	// Decode gob data
-	dec := gob.NewDecoder(bufio.NewReader(file))
-	for {
-		msg := new(FileMessage)
-		if err = dec.Decode(msg); err != nil {
-			if err == io.EOF {
-				// It's OK to get an EOF here
-				break
-			}
-			return fmt.Errorf("Corrupt mailbox %q: %v", mb.indexPath, err)
-		}
-		msg.mailbox = mb
-		mb.messages = append(mb.messages, msg)
-	}
-
-	mb.indexLoaded = true
-	return nil
-}
-
-// writeIndex overwrites the index on disk with the current mailbox data
-func (mb *FileMailbox) writeIndex() error {
-	// Lock for writing
-	indexMx.Lock()
-	defer indexMx.Unlock()
-	if len(mb.messages) > 0 {
-		// Ensure mailbox directory exists
-		if err := mb.createDir(); err != nil {
-			return err
-		}
-		// Open index for writing
-		file, err := os.Create(mb.indexPath)
-		if err != nil {
-			return err
-		}
-		writer := bufio.NewWriter(file)
-		// Write each message and then flush
-		enc := gob.NewEncoder(writer)
-		for _, m := range mb.messages {
-			err = enc.Encode(m)
-			if err != nil {
-				_ = file.Close()
-				return err
-			}
-		}
-		if err := writer.Flush(); err != nil {
-			_ = file.Close()
-			return err
-		}
-		if err := file.Close(); err != nil {
-			log.Errorf("Failed to close %q: %v", mb.indexPath, err)
-			return err
-		}
-	} else {
-		// No messages, delete index+maildir
-		log.Tracef("Removing mailbox %v", mb.path)
-		return mb.removeDir()
-	}
-
-	return nil
-}
-
-// createDir checks for the presence of the path for this mailbox, creates it if needed
-func (mb *FileMailbox) createDir() error {
-	dirMx.Lock()
-	defer dirMx.Unlock()
-	if _, err := os.Stat(mb.path); err != nil {
-		if err := os.MkdirAll(mb.path, 0770); err != nil {
-			log.Errorf("Failed to create directory %v, %v", mb.path, err)
-			return err
-		}
-	}
-	return nil
-}
-
-// removeDir removes the mailbox, plus empty higher level directories
-func (mb *FileMailbox) removeDir() error {
-	dirMx.Lock()
-	defer dirMx.Unlock()
-	// remove mailbox dir, including index file
-	if err := os.RemoveAll(mb.path); err != nil {
-		return err
-	}
-	// remove parents if empty
-	dir := filepath.Dir(mb.path)
-	if removeDirIfEmpty(dir) {
-		removeDirIfEmpty(filepath.Dir(dir))
-	}
-	return nil
-}
-
-// removeDirIfEmpty will remove the specified directory if it contains no files or directories.
-// Caller should hold dirMx.  Returns true if dir was removed.
-func removeDirIfEmpty(path string) (removed bool) {
-	f, err := os.Open(path)
-	if err != nil {
-		return false
-	}
-	files, err := f.Readdirnames(0)
-	_ = f.Close()
-	if err != nil {
-		return false
-	}
-	if len(files) > 0 {
-		// Dir not empty
-		return false
-	}
-	log.Tracef("Removing dir %v", path)
-	err = os.Remove(path)
-	if err != nil {
-		log.Errorf("Failed to remove %q: %v", path, err)
-		return false
-	}
-	return true
-}
-
-// generatePrefix converts a Time object into the ISO style format we use
-// as a prefix for message files.  Note:  It is used directly by unit
-// tests.
-func generatePrefix(date time.Time) string {
-	return date.Format("20060102T150405")
-}
-
-// generateId adds a 4-digit unique number onto the end of the string
-// returned by generatePrefix()
-func generateID(date time.Time) string {
-	return generatePrefix(date) + "-" + fmt.Sprintf("%04d", <-countChannel)
-}

filestore/fstore_test.go

@@ -1,583 +0,0 @@
-package filestore
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"log"
-	"os"
-	"path/filepath"
-	"testing"
-	"time"
-
-	"github.com/jhillyerd/inbucket/config"
-	"github.com/stretchr/testify/assert"
-)
-
-// Test directory structure created by filestore
-func TestFSDirStructure(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-	root := ds.path
-
-	// james hashes to 474ba67bdb289c6263b36dfd8a7bed6c85b04943
-	mbName := "james"
-
-	// Check filestore root exists
-	assert.True(t, isDir(root), "Expected %q to be a directory", root)
-
-	// Check mail dir exists
-	expect := filepath.Join(root, "mail")
-	assert.True(t, isDir(expect), "Expected %q to be a directory", expect)
-
-	// Check first hash section does not exist
-	expect = filepath.Join(root, "mail", "474")
-	assert.False(t, isDir(expect), "Expected %q to not exist", expect)
-
-	// Deliver test message
-	id1, _ := deliverMessage(ds, mbName, "test", time.Now())
-
-	// Check path to message exists
-	assert.True(t, isDir(expect), "Expected %q to be a directory", expect)
-	expect = filepath.Join(expect, "474ba6")
-	assert.True(t, isDir(expect), "Expected %q to be a directory", expect)
-	expect = filepath.Join(expect, "474ba67bdb289c6263b36dfd8a7bed6c85b04943")
-	assert.True(t, isDir(expect), "Expected %q to be a directory", expect)
-
-	// Check files
-	mbPath := expect
-	expect = filepath.Join(mbPath, "index.gob")
-	assert.True(t, isFile(expect), "Expected %q to be a file", expect)
-	expect = filepath.Join(mbPath, id1+".raw")
-	assert.True(t, isFile(expect), "Expected %q to be a file", expect)
-
-	// Deliver second test message
-	id2, _ := deliverMessage(ds, mbName, "test 2", time.Now())
-
-	// Check files
-	expect = filepath.Join(mbPath, "index.gob")
-	assert.True(t, isFile(expect), "Expected %q to be a file", expect)
-	expect = filepath.Join(mbPath, id2+".raw")
-	assert.True(t, isFile(expect), "Expected %q to be a file", expect)
-
-	// Delete message
-	mb, err := ds.MailboxFor(mbName)
-	assert.Nil(t, err)
-	msg, err := mb.GetMessage(id1)
-	assert.Nil(t, err)
-	err = msg.Delete()
-	assert.Nil(t, err)
-
-	// Message should be removed
-	expect = filepath.Join(mbPath, id1+".raw")
-	assert.False(t, isPresent(expect), "Did not expect %q to exist", expect)
-	expect = filepath.Join(mbPath, "index.gob")
-	assert.True(t, isFile(expect), "Expected %q to be a file", expect)
-
-	// Delete message
-	msg, err = mb.GetMessage(id2)
-	assert.Nil(t, err)
-	err = msg.Delete()
-	assert.Nil(t, err)
-
-	// Message should be removed
-	expect = filepath.Join(mbPath, id2+".raw")
-	assert.False(t, isPresent(expect), "Did not expect %q to exist", expect)
-
-	// No messages, index & maildir should be removed
-	expect = filepath.Join(mbPath, "index.gob")
-	assert.False(t, isPresent(expect), "Did not expect %q to exist", expect)
-	expect = mbPath
-	assert.False(t, isPresent(expect), "Did not expect %q to exist", expect)
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test FileDataStore.AllMailboxes()
-func TestFSAllMailboxes(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-
-	for _, name := range []string{"abby", "bill", "christa", "donald", "evelyn"} {
-		// Create day old message
-		date := time.Now().Add(-24 * time.Hour)
-		deliverMessage(ds, name, "Old Message", date)
-
-		// Create current message
-		date = time.Now()
-		deliverMessage(ds, name, "New Message", date)
-	}
-
-	mboxes, err := ds.AllMailboxes()
-	assert.Nil(t, err)
-	assert.Equal(t, len(mboxes), 5)
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test delivering several messages to the same mailbox, meanwhile querying its
-// contents with a new mailbox object each time
-func TestFSDeliverMany(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-
-	mbName := "fred"
-	subjects := []string{"alpha", "bravo", "charlie", "delta", "echo"}
-
-	for i, subj := range subjects {
-		// Check number of messages
-		mb, err := ds.MailboxFor(mbName)
-		if err != nil {
-			t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-		}
-		msgs, err := mb.GetMessages()
-		if err != nil {
-			t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-		}
-		assert.Equal(t, i, len(msgs), "Expected %v message(s), but got %v", i, len(msgs))
-
-		// Add a message
-		deliverMessage(ds, mbName, subj, time.Now())
-	}
-
-	mb, err := ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-	msgs, err := mb.GetMessages()
-	if err != nil {
-		t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-	}
-	assert.Equal(t, len(subjects), len(msgs), "Expected %v message(s), but got %v",
-		len(subjects), len(msgs))
-
-	// Confirm delivery order
-	for i, expect := range subjects {
-		subj := msgs[i].Subject()
-		assert.Equal(t, expect, subj, "Expected subject %q, got %q", expect, subj)
-	}
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test deleting messages
-func TestFSDelete(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-
-	mbName := "fred"
-	subjects := []string{"alpha", "bravo", "charlie", "delta", "echo"}
-
-	for _, subj := range subjects {
-		// Add a message
-		deliverMessage(ds, mbName, subj, time.Now())
-	}
-
-	mb, err := ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-	msgs, err := mb.GetMessages()
-	if err != nil {
-		t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-	}
-	assert.Equal(t, len(subjects), len(msgs), "Expected %v message(s), but got %v",
-		len(subjects), len(msgs))
-
-	// Delete a couple messages
-	_ = msgs[1].Delete()
-	_ = msgs[3].Delete()
-
-	// Confirm deletion
-	mb, err = ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-	msgs, err = mb.GetMessages()
-	if err != nil {
-		t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-	}
-
-	subjects = []string{"alpha", "charlie", "echo"}
-	assert.Equal(t, len(subjects), len(msgs), "Expected %v message(s), but got %v",
-		len(subjects), len(msgs))
-	for i, expect := range subjects {
-		subj := msgs[i].Subject()
-		assert.Equal(t, expect, subj, "Expected subject %q, got %q", expect, subj)
-	}
-
-	// Try appending one more
-	deliverMessage(ds, mbName, "foxtrot", time.Now())
-
-	mb, err = ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-	msgs, err = mb.GetMessages()
-	if err != nil {
-		t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-	}
-
-	subjects = []string{"alpha", "charlie", "echo", "foxtrot"}
-	assert.Equal(t, len(subjects), len(msgs), "Expected %v message(s), but got %v",
-		len(subjects), len(msgs))
-	for i, expect := range subjects {
-		subj := msgs[i].Subject()
-		assert.Equal(t, expect, subj, "Expected subject %q, got %q", expect, subj)
-	}
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test purging a mailbox
-func TestFSPurge(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-
-	mbName := "fred"
-	subjects := []string{"alpha", "bravo", "charlie", "delta", "echo"}
-
-	for _, subj := range subjects {
-		// Add a message
-		deliverMessage(ds, mbName, subj, time.Now())
-	}
-
-	mb, err := ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-	msgs, err := mb.GetMessages()
-	if err != nil {
-		t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-	}
-	assert.Equal(t, len(subjects), len(msgs), "Expected %v message(s), but got %v",
-		len(subjects), len(msgs))
-
-	// Purge mailbox
-	err = mb.Purge()
-	assert.Nil(t, err)
-
-	// Confirm deletion
-	mb, err = ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-	msgs, err = mb.GetMessages()
-	if err != nil {
-		t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-	}
-
-	assert.Equal(t, len(msgs), 0, "Expected mailbox to have zero messages, got %v", len(msgs))
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test message size calculation
-func TestFSSize(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-
-	mbName := "fred"
-	subjects := []string{"a", "br", "much longer than the others"}
-	sentIds := make([]string, len(subjects))
-	sentSizes := make([]int64, len(subjects))
-
-	for i, subj := range subjects {
-		// Add a message
-		id, size := deliverMessage(ds, mbName, subj, time.Now())
-		sentIds[i] = id
-		sentSizes[i] = size
-	}
-
-	mb, err := ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-	for i, id := range sentIds {
-		msg, err := mb.GetMessage(id)
-		assert.Nil(t, err)
-
-		expect := sentSizes[i]
-		size := msg.Size()
-		assert.Equal(t, expect, size, "Expected size of %v, got %v", expect, size)
-	}
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test missing files
-func TestFSMissing(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-
-	mbName := "fred"
-	subjects := []string{"a", "b", "c"}
-	sentIds := make([]string, len(subjects))
-
-	for i, subj := range subjects {
-		// Add a message
-		id, _ := deliverMessage(ds, mbName, subj, time.Now())
-		sentIds[i] = id
-	}
-
-	mb, err := ds.MailboxFor(mbName)
-	if err != nil {
-		t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-	}
-
-	// Delete a message file without removing it from index
-	msg, err := mb.GetMessage(sentIds[1])
-	assert.Nil(t, err)
-	fmsg := msg.(*FileMessage)
-	_ = os.Remove(fmsg.rawPath())
-	msg, err = mb.GetMessage(sentIds[1])
-	assert.Nil(t, err)
-
-	// Try to read parts of message
-	_, err = msg.ReadHeader()
-	assert.Error(t, err)
-	_, err = msg.ReadBody()
-	assert.Error(t, err)
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test delivering several messages to the same mailbox, see if message cap works
-func TestFSMessageCap(t *testing.T) {
-	mbCap := 10
-	ds, logbuf := setupDataStore(config.DataStoreConfig{MailboxMsgCap: mbCap})
-	defer teardownDataStore(ds)
-
-	mbName := "captain"
-	for i := 0; i < 20; i++ {
-		// Add a message
-		subj := fmt.Sprintf("subject %v", i)
-		deliverMessage(ds, mbName, subj, time.Now())
-		t.Logf("Delivered %q", subj)
-
-		// Check number of messages
-		mb, err := ds.MailboxFor(mbName)
-		if err != nil {
-			t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-		}
-		msgs, err := mb.GetMessages()
-		if err != nil {
-			t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-		}
-		if len(msgs) > mbCap {
-			t.Errorf("Mailbox should be capped at %v messages, but has %v", mbCap, len(msgs))
-		}
-
-		// Check that the first message is correct
-		first := i - mbCap + 1
-		if first < 0 {
-			first = 0
-		}
-		firstSubj := fmt.Sprintf("subject %v", first)
-		if firstSubj != msgs[0].Subject() {
-			t.Errorf("Expected first subject to be %q, got %q", firstSubj, msgs[0].Subject())
-		}
-	}
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test delivering several messages to the same mailbox, see if no message cap works
-func TestFSNoMessageCap(t *testing.T) {
-	mbCap := 0
-	ds, logbuf := setupDataStore(config.DataStoreConfig{MailboxMsgCap: mbCap})
-	defer teardownDataStore(ds)
-
-	mbName := "captain"
-	for i := 0; i < 20; i++ {
-		// Add a message
-		subj := fmt.Sprintf("subject %v", i)
-		deliverMessage(ds, mbName, subj, time.Now())
-		t.Logf("Delivered %q", subj)
-
-		// Check number of messages
-		mb, err := ds.MailboxFor(mbName)
-		if err != nil {
-			t.Fatalf("Failed to MailboxFor(%q): %v", mbName, err)
-		}
-		msgs, err := mb.GetMessages()
-		if err != nil {
-			t.Fatalf("Failed to GetMessages for %q: %v", mbName, err)
-		}
-		if len(msgs) != i+1 {
-			t.Errorf("Expected %v messages, got %v", i+1, len(msgs))
-		}
-	}
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// Test Get the latest message
-func TestGetLatestMessage(t *testing.T) {
-	ds, logbuf := setupDataStore(config.DataStoreConfig{})
-	defer teardownDataStore(ds)
-
-	// james hashes to 474ba67bdb289c6263b36dfd8a7bed6c85b04943
-	mbName := "james"
-
-	// Test empty mailbox
-	mb, err := ds.MailboxFor(mbName)
-	assert.Nil(t, err)
-	msg, err := mb.GetMessage("latest")
-	assert.Nil(t, msg)
-	assert.Error(t, err)
-
-	// Deliver test message
-	deliverMessage(ds, mbName, "test", time.Now())
-
-	// Deliver test message 2
-	id2, _ := deliverMessage(ds, mbName, "test 2", time.Now())
-
-	// Test get the latest message
-	mb, err = ds.MailboxFor(mbName)
-	assert.Nil(t, err)
-	msg, err = mb.GetMessage("latest")
-	assert.Nil(t, err)
-	assert.True(t, msg.ID() == id2, "Expected %q to be equal to %q", msg.ID(), id2)
-
-	// Deliver test message 3
-	id3, _ := deliverMessage(ds, mbName, "test 3", time.Now())
-
-	mb, err = ds.MailboxFor(mbName)
-	assert.Nil(t, err)
-	msg, err = mb.GetMessage("latest")
-	assert.Nil(t, err)
-	assert.True(t, msg.ID() == id3, "Expected %q to be equal to %q", msg.ID(), id3)
-
-	// Test wrong id
-	_, err = mb.GetMessage("wrongid")
-	assert.Error(t, err)
-
-	if t.Failed() {
-		// Wait for handler to finish logging
-		time.Sleep(2 * time.Second)
-		// Dump buffered log data if there was a failure
-		_, _ = io.Copy(os.Stderr, logbuf)
-	}
-}
-
-// setupDataStore creates a new FileDataStore in a temporary directory
-func setupDataStore(cfg config.DataStoreConfig) (*FileDataStore, *bytes.Buffer) {
-	path, err := ioutil.TempDir("", "inbucket")
-	if err != nil {
-		panic(err)
-	}
-
-	// Capture log output
-	buf := new(bytes.Buffer)
-	log.SetOutput(buf)
-
-	cfg.Path = path
-	return NewFileDataStore(cfg).(*FileDataStore), buf
-}
-
-// deliverMessage creates and delivers a message to the specific mailbox, returning
-// the size of the generated message.
-func deliverMessage(ds *FileDataStore, mbName string, subject string,
-	date time.Time) (id string, size int64) {
-	// Build fake SMTP message for delivery
-	testMsg := make([]byte, 0, 300)
-	testMsg = append(testMsg, []byte("To: somebody@host\r\n")...)
-	testMsg = append(testMsg, []byte("From: somebodyelse@host\r\n")...)
-	testMsg = append(testMsg, []byte(fmt.Sprintf("Subject: %s\r\n", subject))...)
-	testMsg = append(testMsg, []byte("\r\n")...)
-	testMsg = append(testMsg, []byte("Test Body\r\n")...)
-
-	mb, err := ds.MailboxFor(mbName)
-	if err != nil {
-		panic(err)
-	}
-	// Create message object
-	id = generateID(date)
-	msg, err := mb.NewMessage()
-	if err != nil {
-		panic(err)
-	}
-	fmsg := msg.(*FileMessage)
-	fmsg.Fdate = date
-	fmsg.Fid = id
-	if err = msg.Append(testMsg); err != nil {
-		panic(err)
-	}
-	if err = msg.Close(); err != nil {
-		panic(err)
-	}
-
-	return id, int64(len(testMsg))
-}
-
-func teardownDataStore(ds *FileDataStore) {
-	if err := os.RemoveAll(ds.path); err != nil {
-		panic(err)
-	}
-}
-
-func isPresent(path string) bool {
-	_, err := os.Lstat(path)
-	return err == nil
-}
-
-func isFile(path string) bool {
-	if fi, err := os.Lstat(path); err == nil {
-		return !fi.IsDir()
-	}
-	return false
-}
-
-func isDir(path string) bool {
-	if fi, err := os.Lstat(path); err == nil {
-		return fi.IsDir()
-	}
-	return false
-}

go.mod

@@ -0,0 +1,44 @@
+module github.com/inbucket/inbucket/v3
+
+go 1.25.0
+
+require (
+	github.com/cjoudrey/gluahttp v0.0.0-20201111170219-25003d9adfa9
+	github.com/cosmotek/loguago v1.0.0
+	github.com/google/subcommands v1.2.0
+	github.com/gorilla/css v1.0.1
+	github.com/gorilla/mux v1.8.1
+	github.com/gorilla/websocket v1.5.3
+	github.com/inbucket/gopher-json v0.2.0
+	github.com/jhillyerd/enmime/v2 v2.1.0
+	github.com/jhillyerd/goldiff v0.1.0
+	github.com/kelseyhightower/envconfig v1.4.0
+	github.com/microcosm-cc/bluemonday v1.0.27
+	github.com/rs/zerolog v1.34.0
+	github.com/stretchr/testify v1.10.0
+	github.com/yuin/gopher-lua v1.1.1
+	golang.org/x/net v0.40.0
+)
+
+require (
+	github.com/aymerick/douceur v0.2.0 // indirect
+	github.com/cention-sany/utf7 v0.0.0-20170124080048-26cad61bd60a // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/gogs/chardet v0.0.0-20211120154057-b7413eaefb8f // indirect
+	github.com/jaytaylor/html2text v0.0.0-20230321000545-74c2419ad056 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
+	github.com/yuin/gluamapper v0.0.0-20150323120927-d836955830e7 // indirect
+	golang.org/x/sys v0.33.0 // indirect
+	golang.org/x/text v0.25.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,93 @@
+github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
+github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
+github.com/cention-sany/utf7 v0.0.0-20170124080048-26cad61bd60a h1:MISbI8sU/PSK/ztvmWKFcI7UGb5/HQT7B+i3a2myKgI=
+github.com/cention-sany/utf7 v0.0.0-20170124080048-26cad61bd60a/go.mod h1:2GxOXOlEPAMFPfp014mK1SWq8G8BN8o7/dfYqJrVGn8=
+github.com/cjoudrey/gluahttp v0.0.0-20201111170219-25003d9adfa9 h1:rdWOzitWlNYeUsXmz+IQfa9NkGEq3gA/qQ3mOEqBU6o=
+github.com/cjoudrey/gluahttp v0.0.0-20201111170219-25003d9adfa9/go.mod h1:X97UjDTXp+7bayQSFZk2hPvCTmTZIicUjZQRtkwgAKY=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cosmotek/loguago v1.0.0 h1:cM6xoMPoIL1hRPicMenFNVohylundRIPz+OfpadJyY0=
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httpd/helpers.go

@@ -1,64 +0,0 @@
-package httpd
-
-import (
-	"fmt"
-	"html"
-	"html/template"
-	"regexp"
-	"strings"
-	"time"
-
-	"github.com/jhillyerd/inbucket/log"
-)
-
-// TemplateFuncs declares functions made available to all templates (including partials)
-var TemplateFuncs = template.FuncMap{
-	"friendlyTime": FriendlyTime,
-	"reverse":      Reverse,
-	"textToHtml":   TextToHTML,
-}
-
-// From http://daringfireball.net/2010/07/improved_regex_for_matching_urls
-var urlRE = regexp.MustCompile("(?i)\\b((?:[a-z][\\w-]+:(?:/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}/)(?:[^\\s()<>]+|\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\))+(?:\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\)|[^\\s`!()\\[\\]{};:'\".,<>?«»“”‘’]))")
-
-// FriendlyTime renders a timestamp in a friendly fashion: 03:04:05 PM if same day,
-// otherwise Mon Jan 2, 2006
-func FriendlyTime(t time.Time) template.HTML {
-	ty, tm, td := t.Date()
-	ny, nm, nd := time.Now().Date()
-	if (ty == ny) && (tm == nm) && (td == nd) {
-		return template.HTML(t.Format("03:04:05 PM"))
-	}
-	return template.HTML(t.Format("Mon Jan 2, 2006"))
-}
-
-// Reverse routing function (shared with templates)
-func Reverse(name string, things ...interface{}) string {
-	// Convert the things to strings
-	strs := make([]string, len(things))
-	for i, th := range things {
-		strs[i] = fmt.Sprint(th)
-	}
-	// Grab the route
-	u, err := Router.Get(name).URL(strs...)
-	if err != nil {
-		log.Errorf("Failed to reverse route: %v", err)
-		return "/ROUTE-ERROR"
-	}
-	return u.Path
-}
-
-// TextToHTML takes plain text, escapes it and tries to pretty it up for
-// HTML display
-func TextToHTML(text string) template.HTML {
-	text = html.EscapeString(text)
-	text = urlRE.ReplaceAllStringFunc(text, WrapURL)
-	replacer := strings.NewReplacer("\r\n", "<br/>\n", "\r", "<br/>\n", "\n", "<br/>\n")
-	return template.HTML(replacer.Replace(text))
-}
-
-// WrapURL wraps a <a href> tag around the provided URL
-func WrapURL(url string) string {
-	unescaped := strings.Replace(url, "&amp;", "&", -1)
-	return fmt.Sprintf("<a href=\"%s\" target=\"_blank\">%s</a>", unescaped, url)
-}

httpd/helpers_test.go

@@ -1,30 +0,0 @@
-package httpd
-
-import (
-	"html/template"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestTextToHtml(t *testing.T) {
-	// Identity
-	assert.Equal(t, TextToHTML("html"), template.HTML("html"))
-
-	// Check it escapes
-	assert.Equal(t, TextToHTML("<html>"), template.HTML("&lt;html&gt;"))
-
-	// Check for linebreaks
-	assert.Equal(t, TextToHTML("line\nbreak"), template.HTML("line<br/>\nbreak"))
-	assert.Equal(t, TextToHTML("line\r\nbreak"), template.HTML("line<br/>\nbreak"))
-	assert.Equal(t, TextToHTML("line\rbreak"), template.HTML("line<br/>\nbreak"))
-}
-
-func TestURLDetection(t *testing.T) {
-	assert.Equal(t,
-		TextToHTML("http://google.com/"),
-		template.HTML("<a href=\"http://google.com/\" target=\"_blank\">http://google.com/</a>"))
-	assert.Equal(t,
-		TextToHTML("http://a.com/?q=a&n=v"),
-		template.HTML("<a href=\"http://a.com/?q=a&n=v\" target=\"_blank\">http://a.com/?q=a&amp;n=v</a>"))
-}

httpd/server.go

@@ -1,159 +0,0 @@
-// Package httpd provides the plumbing for Inbucket's web GUI and RESTful API
-package httpd
-
-import (
-	"context"
-	"expvar"
-	"fmt"
-	"net"
-	"net/http"
-	"time"
-
-	"github.com/gorilla/mux"
-	"github.com/gorilla/securecookie"
-	"github.com/gorilla/sessions"
-	"github.com/jhillyerd/inbucket/config"
-	"github.com/jhillyerd/inbucket/datastore"
-	"github.com/jhillyerd/inbucket/log"
-	"github.com/jhillyerd/inbucket/msghub"
-)
-
-// Handler is a function type that handles an HTTP request in Inbucket
-type Handler func(http.ResponseWriter, *http.Request, *Context) error
-
-var (
-	// DataStore is where all the mailboxes and messages live
-	DataStore datastore.DataStore
-
-	// msgHub holds a reference to the message pub/sub system
-	msgHub *msghub.Hub
-
-	// Router is shared between httpd, webui and rest packages. It sends
-	// incoming requests to the correct handler function
-	Router = mux.NewRouter()
-
-	webConfig      config.WebConfig
-	server         *http.Server
-	listener       net.Listener
-	sessionStore   sessions.Store
-	globalShutdown chan bool
-
-	// ExpWebSocketConnectsCurrent tracks the number of open WebSockets
-	ExpWebSocketConnectsCurrent = new(expvar.Int)
-)
-
-func init() {
-	m := expvar.NewMap("http")
-	m.Set("WebSocketConnectsCurrent", ExpWebSocketConnectsCurrent)
-}
-
-// Initialize sets up things for unit tests or the Start() method
-func Initialize(
-	cfg config.WebConfig,
-	shutdownChan chan bool,
-	ds datastore.DataStore,
-	mh *msghub.Hub) {
-
-	webConfig = cfg
-	globalShutdown = shutdownChan
-
-	// NewContext() will use this DataStore for the web handlers
-	DataStore = ds
-	msgHub = mh
-
-	// Content Paths
-	log.Infof("HTTP templates mapped to %q", cfg.TemplateDir)
-	log.Infof("HTTP static content mapped to %q", cfg.PublicDir)
-	Router.PathPrefix("/public/").Handler(http.StripPrefix("/public/",
-		http.FileServer(http.Dir(cfg.PublicDir))))
-	http.Handle("/", Router)
-
-	// Session cookie setup
-	if cfg.CookieAuthKey == "" {
-		log.Infof("HTTP generating random cookie.auth.key")
-		sessionStore = sessions.NewCookieStore(securecookie.GenerateRandomKey(64))
-	} else {
-		log.Tracef("HTTP using configured cookie.auth.key")
-		sessionStore = sessions.NewCookieStore([]byte(cfg.CookieAuthKey))
-	}
-}
-
-// Start begins listening for HTTP requests
-func Start(ctx context.Context) {
-	addr := fmt.Sprintf("%v:%v", webConfig.IP4address, webConfig.IP4port)
-	server = &http.Server{
-		Addr:         addr,
-		Handler:      nil,
-		ReadTimeout:  60 * time.Second,
-		WriteTimeout: 60 * time.Second,
-	}
-
-	// We don't use ListenAndServe because it lacks a way to close the listener
-	log.Infof("HTTP listening on TCP4 %v", addr)
-	var err error
-	listener, err = net.Listen("tcp", addr)
-	if err != nil {
-		log.Errorf("HTTP failed to start TCP4 listener: %v", err)
-		emergencyShutdown()
-		return
-	}
-
-	// Listener go routine
-	go serve(ctx)
-
-	// Wait for shutdown
-	select {
-	case _ = <-ctx.Done():
-		log.Tracef("HTTP server shutting down on request")
-	}
-
-	// Closing the listener will cause the serve() go routine to exit
-	if err := listener.Close(); err != nil {
-		log.Errorf("Failed to close HTTP listener: %v", err)
-	}
-}
-
-// serve begins serving HTTP requests
-func serve(ctx context.Context) {
-	// server.Serve blocks until we close the listener
-	err := server.Serve(listener)
-
-	select {
-	case _ = <-ctx.Done():
-		// Nop
-	default:
-		log.Errorf("HTTP server failed: %v", err)
-		emergencyShutdown()
-		return
-	}
-}
-
-// ServeHTTP builds the context and passes onto the real handler
-func (h Handler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
-	// Create the context
-	ctx, err := NewContext(req)
-	if err != nil {
-		log.Errorf("HTTP failed to create context: %v", err)
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	defer ctx.Close()
-
-	// Run the handler, grab the error, and report it
-	log.Tracef("HTTP[%v] %v %v %q", req.RemoteAddr, req.Proto, req.Method, req.RequestURI)
-	err = h(w, req, ctx)
-	if err != nil {
-		log.Errorf("HTTP error handling %q: %v", req.RequestURI, err)
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-}
-
-func emergencyShutdown() {
-	// Shutdown Inbucket
-	select {
-	case _ = <-globalShutdown:
-	default:
-		close(globalShutdown)
-	}
-}

httpd/template.go

@@ -1,83 +0,0 @@
-package httpd
-
-import (
-	"html/template"
-	"net/http"
-	"path"
-	"path/filepath"
-	"strings"
-	"sync"
-
-	"github.com/jhillyerd/inbucket/log"
-)
-
-var cachedMutex sync.Mutex
-var cachedTemplates = map[string]*template.Template{}
-var cachedPartials = map[string]*template.Template{}
-
-// RenderTemplate fetches the named template and renders it to the provided
-// ResponseWriter.
-func RenderTemplate(name string, w http.ResponseWriter, data interface{}) error {
-	t, err := ParseTemplate(name, false)
-	if err != nil {
-		log.Errorf("Error in template '%v': %v", name, err)
-		return err
-	}
-	w.Header().Set("Expires", "-1")
-	return t.Execute(w, data)
-}
-
-// RenderPartial fetches the named template and renders it to the provided
-// ResponseWriter.
-func RenderPartial(name string, w http.ResponseWriter, data interface{}) error {
-	t, err := ParseTemplate(name, true)
-	if err != nil {
-		log.Errorf("Error in template '%v': %v", name, err)
-		return err
-	}
-	w.Header().Set("Expires", "-1")
-	return t.Execute(w, data)
-}
-
-// ParseTemplate loads the requested template along with _base.html, caching
-// the result (if configured to do so)
-func ParseTemplate(name string, partial bool) (*template.Template, error) {
-	cachedMutex.Lock()
-	defer cachedMutex.Unlock()
-
-	if t, ok := cachedTemplates[name]; ok {
-		return t, nil
-	}
-
-	tempPath := strings.Replace(name, "/", string(filepath.Separator), -1)
-	tempFile := filepath.Join(webConfig.TemplateDir, tempPath)
-	log.Tracef("Parsing template %v", tempFile)
-
-	var err error
-	var t *template.Template
-	if partial {
-		// Need to get basename of file to make it root template w/ funcs
-		base := path.Base(name)
-		t = template.New(base).Funcs(TemplateFuncs)
-		t, err = t.ParseFiles(tempFile)
-	} else {
-		t = template.New("_base.html").Funcs(TemplateFuncs)
-		t, err = t.ParseFiles(filepath.Join(webConfig.TemplateDir, "_base.html"), tempFile)
-	}
-	if err != nil {
-		return nil, err
-	}
-
-	// Allows us to disable caching for theme development
-	if webConfig.TemplateCache {
-		if partial {
-			log.Tracef("Caching partial %v", name)
-			cachedTemplates[name] = t
-		} else {
-			log.Tracef("Caching template %v", name)
-			cachedTemplates[name] = t
-		}
-	}
-
-	return t, nil
-}

inbucket.bat

@@ -1 +0,0 @@
-inbucket.exe etc\win-sample.conf

inbucket.go

@@ -1,183 +0,0 @@
-// main is the inbucket daemon launcher
-package main
-
-import (
-	"context"
-	"expvar"
-	"flag"
-	"fmt"
-	"os"
-	"os/signal"
-	"runtime"
-	"syscall"
-	"time"
-
-	"github.com/jhillyerd/inbucket/config"
-	"github.com/jhillyerd/inbucket/filestore"
-	"github.com/jhillyerd/inbucket/httpd"
-	"github.com/jhillyerd/inbucket/log"
-	"github.com/jhillyerd/inbucket/msghub"
-	"github.com/jhillyerd/inbucket/pop3d"
-	"github.com/jhillyerd/inbucket/rest"
-	"github.com/jhillyerd/inbucket/smtpd"
-	"github.com/jhillyerd/inbucket/webui"
-)
-
-var (
-	// version contains the build version number, populated during linking
-	version = "undefined"
-
-	// date contains the build date, populated during linking
-	date = "undefined"
-
-	// Command line flags
-	help    = flag.Bool("help", false, "Displays this help")
-	pidfile = flag.String("pidfile", "none", "Write our PID into the specified file")
-	logfile = flag.String("logfile", "stderr", "Write out log into the specified file")
-
-	// shutdownChan - close it to tell Inbucket to shut down cleanly
-	shutdownChan = make(chan bool)
-
-	// Server instances
-	smtpServer *smtpd.Server
-	pop3Server *pop3d.Server
-)
-
-func init() {
-	flag.Usage = func() {
-		fmt.Fprintln(os.Stderr, "Usage of inbucket [options] <conf file>:")
-		flag.PrintDefaults()
-	}
-
-	// Server uptime for status page
-	startTime := time.Now()
-	expvar.Publish("uptime", expvar.Func(func() interface{} {
-		return time.Since(startTime) / time.Second
-	}))
-
-	// Goroutine count for status page
-	expvar.Publish("goroutines", expvar.Func(func() interface{} {
-		return runtime.NumGoroutine()
-	}))
-}
-
-func main() {
-	config.Version = version
-	config.BuildDate = date
-
-	flag.Parse()
-	if *help {
-		flag.Usage()
-		return
-	}
-
-	// Root context
-	rootCtx, rootCancel := context.WithCancel(context.Background())
-
-	// Load & Parse config
-	if flag.NArg() != 1 {
-		flag.Usage()
-		os.Exit(1)
-	}
-	err := config.LoadConfig(flag.Arg(0))
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "Failed to parse config: %v\n", err)
-		os.Exit(1)
-	}
-
-	// Setup signal handler
-	sigChan := make(chan os.Signal, 1)
-	signal.Notify(sigChan, syscall.SIGHUP, syscall.SIGTERM, syscall.SIGINT)
-
-	// Initialize logging
-	log.SetLogLevel(config.GetLogLevel())
-	if err := log.Initialize(*logfile); err != nil {
-		fmt.Fprintf(os.Stderr, "%v", err)
-		os.Exit(1)
-	}
-	defer log.Close()
-
-	log.Infof("Inbucket %v (%v) starting...", config.Version, config.BuildDate)
-
-	// Write pidfile if requested
-	if *pidfile != "none" {
-		pidf, err := os.Create(*pidfile)
-		if err != nil {
-			log.Errorf("Failed to create %q: %v", *pidfile, err)
-			os.Exit(1)
-		}
-		fmt.Fprintf(pidf, "%v\n", os.Getpid())
-		if err := pidf.Close(); err != nil {
-			log.Errorf("Failed to close PID file %q: %v", *pidfile, err)
-		}
-	}
-
-	// Create message hub
-	msgHub := msghub.New(rootCtx, config.GetWebConfig().MonitorHistory)
-
-	// Grab our datastore
-	ds := filestore.DefaultFileDataStore()
-
-	// Start HTTP server
-	httpd.Initialize(config.GetWebConfig(), shutdownChan, ds, msgHub)
-	webui.SetupRoutes(httpd.Router)
-	rest.SetupRoutes(httpd.Router)
-	go httpd.Start(rootCtx)
-
-	// Start POP3 server
-	pop3Server = pop3d.New(config.GetPOP3Config(), shutdownChan, ds)
-	go pop3Server.Start(rootCtx)
-
-	// Startup SMTP server
-	smtpServer = smtpd.NewServer(config.GetSMTPConfig(), shutdownChan, ds, msgHub)
-	go smtpServer.Start(rootCtx)
-
-	// Loop forever waiting for signals or shutdown channel
-signalLoop:
-	for {
-		select {
-		case sig := <-sigChan:
-			switch sig {
-			case syscall.SIGHUP:
-				log.Infof("Recieved SIGHUP, cycling logfile")
-				log.Rotate()
-			case syscall.SIGINT:
-				// Shutdown requested
-				log.Infof("Received SIGINT, shutting down")
-				close(shutdownChan)
-			case syscall.SIGTERM:
-				// Shutdown requested
-				log.Infof("Received SIGTERM, shutting down")
-				close(shutdownChan)
-			}
-		case <-shutdownChan:
-			rootCancel()
-			break signalLoop
-		}
-	}
-
-	// Wait for active connections to finish
-	go timedExit()
-	smtpServer.Drain()
-	pop3Server.Drain()
-
-	removePIDFile()
-}
-
-// removePIDFile removes the PID file if created
-func removePIDFile() {
-	if *pidfile != "none" {
-		if err := os.Remove(*pidfile); err != nil {
-			log.Errorf("Failed to remove %q: %v", *pidfile, err)
-		}
-	}
-}
-
-// timedExit is called as a goroutine during shutdown, it will force an exit
-// after 15 seconds
-func timedExit() {
-	time.Sleep(15 * time.Second)
-	log.Errorf("Clean shutdown took too long, forcing exit")
-	removePIDFile()
-	os.Exit(0)
-}

log/logging.go

@@ -1,145 +0,0 @@
-package log
-
-import (
-	"fmt"
-	golog "log"
-	"os"
-	"strings"
-)
-
-// Level is used to indicate the severity of a log entry
-type Level int
-
-const (
-	// ERROR indicates a significant problem was encountered
-	ERROR Level = iota
-	// WARN indicates something that may be a problem
-	WARN
-	// INFO indicates a purely informational log entry
-	INFO
-	// TRACE entries are meant for development purposes only
-	TRACE
-)
-
-var (
-	// MaxLevel is the highest Level we will log (max TRACE, min ERROR)
-	MaxLevel = TRACE
-
-	// logfname is the name of the logfile
-	logfname string
-
-	// logf is the file we send log output to, will be nil for stderr or stdout
-	logf *os.File
-)
-
-// Initialize logging.  If logfile is equal to "stderr" or "stdout", then
-// we will log to that output stream.  Otherwise the specificed file will
-// opened for writing, and all log data will be placed in it.
-func Initialize(logfile string) error {
-	if logfile != "stderr" {
-		// stderr is the go logging default
-		if logfile == "stdout" {
-			// set to stdout
-			golog.SetOutput(os.Stdout)
-		} else {
-			logfname = logfile
-			if err := openLogFile(); err != nil {
-				return err
-			}
-			// Platform specific
-			closeStdin()
-		}
-	}
-	return nil
-}
-
-// SetLogLevel sets MaxLevel based on the provided string
-func SetLogLevel(level string) (ok bool) {
-	switch strings.ToUpper(level) {
-	case "ERROR":
-		MaxLevel = ERROR
-	case "WARN":
-		MaxLevel = WARN
-	case "INFO":
-		MaxLevel = INFO
-	case "TRACE":
-		MaxLevel = TRACE
-	default:
-		Errorf("Unknown log level requested: " + level)
-		return false
-	}
-	return true
-}
-
-// Errorf logs a message to the 'standard' Logger (always), accepts format strings
-func Errorf(msg string, args ...interface{}) {
-	msg = "[ERROR] " + msg
-	golog.Printf(msg, args...)
-}
-
-// Warnf logs a message to the 'standard' Logger if MaxLevel is >= WARN, accepts format strings
-func Warnf(msg string, args ...interface{}) {
-	if MaxLevel >= WARN {
-		msg = "[WARN ] " + msg
-		golog.Printf(msg, args...)
-	}
-}
-
-// Infof logs a message to the 'standard' Logger if MaxLevel is >= INFO, accepts format strings
-func Infof(msg string, args ...interface{}) {
-	if MaxLevel >= INFO {
-		msg = "[INFO ] " + msg
-		golog.Printf(msg, args...)
-	}
-}
-
-// Tracef logs a message to the 'standard' Logger if MaxLevel is >= TRACE, accepts format strings
-func Tracef(msg string, args ...interface{}) {
-	if MaxLevel >= TRACE {
-		msg = "[TRACE] " + msg
-		golog.Printf(msg, args...)
-	}
-}
-
-// Rotate closes the current log file, then reopens it.  This gives an external
-// log rotation system the opportunity to move the existing log file out of the
-// way and have Inbucket create a new one.
-func Rotate() {
-	// Rotate logs if configured
-	if logf != nil {
-		closeLogFile()
-		// There is nothing we can do if the log open fails
-		_ = openLogFile()
-	} else {
-		Infof("Ignoring SIGHUP, logfile not configured")
-	}
-}
-
-// Close the log file if we have one open
-func Close() {
-	if logf != nil {
-		closeLogFile()
-	}
-}
-
-// openLogFile creates or appends to the logfile passed on commandline
-func openLogFile() error {
-	// use specified log file
-	var err error
-	logf, err = os.OpenFile(logfname, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
-	if err != nil {
-		return fmt.Errorf("Failed to create %v: %v\n", logfname, err)
-	}
-	golog.SetOutput(logf)
-	Tracef("Opened new logfile")
-	// Platform specific
-	reassignStdout()
-	return nil
-}
-
-// closeLogFile closes the current logfile
-func closeLogFile() {
-	Tracef("Closing logfile")
-	// We are never in a situation where we can do anything about failing to close
-	_ = logf.Close()
-}

log/stdout_unix.go

@@ -1,31 +0,0 @@
-// +build !windows
-
-package log
-
-import (
-	"golang.org/x/sys/unix"
-	"os"
-)
-
-// closeStdin will close stdin on Unix platforms - this is standard practice
-// for daemons
-func closeStdin() {
-	if err := os.Stdin.Close(); err != nil {
-		// Not a fatal error
-		Errorf("Failed to close os.Stdin during log setup")
-	}
-}
-
-// reassignStdout points stdout/stderr to our logfile on systems that support
-// the Dup2 syscall per https://github.com/golang/go/issues/325
-func reassignStdout() {
-	Tracef("Unix reassignStdout()")
-	if err := unix.Dup2(int(logf.Fd()), 1); err != nil {
-		// Not considered fatal
-		Errorf("Failed to re-assign stdout to logfile: %v", err)
-	}
-	if err := unix.Dup2(int(logf.Fd()), 2); err != nil {
-		// Not considered fatal
-		Errorf("Failed to re-assign stderr to logfile: %v", err)
-	}
-}

log/stdout_windows.go

@@ -1,37 +0,0 @@
-// +build windows
-
-package log
-
-import (
-	"os"
-)
-
-var stdOutsClosed = false
-
-// closeStdin does nothing on Windows, it would always fail
-func closeStdin() {
-	// Nop
-}
-
-// reassignStdout points stdout/stderr to our logfile on systems that do not
-// support the Dup2 syscall
-func reassignStdout() {
-	Tracef("Windows reassignStdout()")
-	if !stdOutsClosed {
-		// Close std* streams to prevent accidental output, they will be redirected to
-		// our logfile below
-
-		// Warning: this will hide panic() output, sorry Windows users
-		if err := os.Stderr.Close(); err != nil {
-			// Not considered fatal
-			Errorf("Failed to close os.Stderr during log setup")
-		}
-		if err := os.Stdin.Close(); err != nil {
-			// Not considered fatal
-			Errorf("Failed to close os.Stdin during log setup")
-		}
-		os.Stdout = logf
-		os.Stderr = logf
-		stdOutsClosed = true
-	}
-}

msghub/hub_test.go

@@ -1,255 +0,0 @@
-package msghub
-
-import (
-	"context"
-	"fmt"
-	"testing"
-	"time"
-)
-
-// testListener implements the Listener interface, mock for unit tests
-type testListener struct {
-	messages     []*Message // received messages
-	wantMessages int        // how many messages this listener wants to receive
-	errorAfter   int        // when != 0, messages until Receive() begins returning error
-
-	done     chan struct{} // closed once we have received wantMessages
-	overflow chan struct{} // closed if we receive wantMessages+1
-}
-
-func newTestListener(want int) *testListener {
-	l := &testListener{
-		messages:     make([]*Message, 0, want*2),
-		wantMessages: want,
-		done:         make(chan struct{}),
-		overflow:     make(chan struct{}),
-	}
-	if want == 0 {
-		close(l.done)
-	}
-	return l
-}
-
-// Receive a Message, store it in the messages slice, close applicable channels, and return an error
-// if instructed
-func (l *testListener) Receive(msg Message) error {
-	l.messages = append(l.messages, &msg)
-	if len(l.messages) == l.wantMessages {
-		close(l.done)
-	}
-	if len(l.messages) == l.wantMessages+1 {
-		close(l.overflow)
-	}
-	if l.errorAfter > 0 && len(l.messages) > l.errorAfter {
-		return fmt.Errorf("Too many messages")
-	}
-	return nil
-}
-
-// String formats the got vs wanted message counts
-func (l *testListener) String() string {
-	return fmt.Sprintf("got %v messages, wanted %v", len(l.messages), l.wantMessages)
-}
-
-func TestHubNew(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 5)
-	if hub == nil {
-		t.Fatal("New() == nil, expected a new Hub")
-	}
-}
-
-func TestHubZeroLen(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 0)
-	m := Message{}
-	for i := 0; i < 100; i++ {
-		hub.Dispatch(m)
-	}
-	// Just making sure Hub doesn't panic
-}
-
-func TestHubZeroListeners(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 5)
-	m := Message{}
-	for i := 0; i < 100; i++ {
-		hub.Dispatch(m)
-	}
-	// Just making sure Hub doesn't panic
-}
-
-func TestHubOneListener(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 5)
-	m := Message{}
-	l := newTestListener(1)
-
-	hub.AddListener(l)
-	hub.Dispatch(m)
-
-	// Wait for messages
-	select {
-	case <-l.done:
-	case <-time.After(time.Second):
-		t.Error("Timeout:", l)
-	}
-}
-
-func TestHubRemoveListener(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 5)
-	m := Message{}
-	l := newTestListener(1)
-
-	hub.AddListener(l)
-	hub.Dispatch(m)
-	hub.RemoveListener(l)
-	hub.Dispatch(m)
-	hub.Sync()
-
-	// Wait for messages
-	select {
-	case <-l.overflow:
-		t.Error(l)
-	case <-time.After(50 * time.Millisecond):
-		// Expected result, no overflow
-	}
-}
-
-func TestHubRemoveListenerOnError(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 5)
-	m := Message{}
-
-	// error after 1 means listener should receive 2 messages before being removed
-	l := newTestListener(2)
-	l.errorAfter = 1
-
-	hub.AddListener(l)
-	hub.Dispatch(m)
-	hub.Dispatch(m)
-	hub.Dispatch(m)
-	hub.Dispatch(m)
-	hub.Sync()
-
-	// Wait for messages
-	select {
-	case <-l.overflow:
-		t.Error(l)
-	case <-time.After(50 * time.Millisecond):
-		// Expected result, no overflow
-	}
-}
-
-func TestHubHistoryReplay(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 100)
-	l1 := newTestListener(3)
-	hub.AddListener(l1)
-
-	// Broadcast 3 messages with no listeners
-	msgs := make([]Message, 3)
-	for i := 0; i < len(msgs); i++ {
-		msgs[i] = Message{
-			Subject: fmt.Sprintf("subj %v", i),
-		}
-		hub.Dispatch(msgs[i])
-	}
-
-	// Wait for messages (live)
-	select {
-	case <-l1.done:
-	case <-time.After(time.Second):
-		t.Fatal("Timeout:", l1)
-	}
-
-	// Add a new listener
-	l2 := newTestListener(3)
-	hub.AddListener(l2)
-
-	// Wait for messages (history)
-	select {
-	case <-l2.done:
-	case <-time.After(time.Second):
-		t.Fatal("Timeout:", l2)
-	}
-
-	for i := 0; i < len(msgs); i++ {
-		got := l2.messages[i].Subject
-		want := msgs[i].Subject
-		if got != want {
-			t.Errorf("msg[%v].Subject == %q, want %q", i, got, want)
-		}
-	}
-}
-
-func TestHubHistoryReplayWrap(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	hub := New(ctx, 5)
-	l1 := newTestListener(20)
-	hub.AddListener(l1)
-
-	// Broadcast more messages than the hub can hold
-	msgs := make([]Message, 20)
-	for i := 0; i < len(msgs); i++ {
-		msgs[i] = Message{
-			Subject: fmt.Sprintf("subj %v", i),
-		}
-		hub.Dispatch(msgs[i])
-	}
-
-	// Wait for messages (live)
-	select {
-	case <-l1.done:
-	case <-time.After(time.Second):
-		t.Fatal("Timeout:", l1)
-	}
-
-	// Add a new listener
-	l2 := newTestListener(5)
-	hub.AddListener(l2)
-
-	// Wait for messages (history)
-	select {
-	case <-l2.done:
-	case <-time.After(time.Second):
-		t.Fatal("Timeout:", l2)
-	}
-
-	for i := 0; i < 5; i++ {
-		got := l2.messages[i].Subject
-		want := msgs[i+15].Subject
-		if got != want {
-			t.Errorf("msg[%v].Subject == %q, want %q", i, got, want)
-		}
-	}
-}
-
-func TestHubContextCancel(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	hub := New(ctx, 5)
-	m := Message{}
-	l := newTestListener(1)
-
-	hub.AddListener(l)
-	hub.Dispatch(m)
-	hub.Sync()
-	cancel()
-
-	// Wait for messages
-	select {
-	case <-l.overflow:
-		t.Error(l)
-	case <-time.After(50 * time.Millisecond):
-		// Expected result, no overflow
-	}
-}

pkg/config/config.go

@@ -0,0 +1,148 @@
+package config
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strings"
+	"text/tabwriter"
+	"time"
+
+	"github.com/inbucket/inbucket/v3/pkg/stringutil"
+	"github.com/kelseyhightower/envconfig"
+)
+
+const (
+	prefix      = "inbucket"
+	tableFormat = `Inbucket is configured via the environment. The following environment variables
+can be used:
+
+KEY	DEFAULT	DESCRIPTION
+{{range .}}{{usage_key .}}	{{usage_default .}}	{{usage_description .}}
+{{end}}`
+)
+
+var (
+	// Version of this build, set by main
+	Version = ""
+
+	// BuildDate for this build, set by main
+	BuildDate = ""
+)
+
+// mbNaming represents a mailbox naming strategy.
+type mbNaming int
+
+// Mailbox naming strategies.
+const (
+	UnknownNaming mbNaming = iota
+	LocalNaming
+	FullNaming
+	DomainNaming
+)
+
+// Decode a naming strategy from string.
+func (n *mbNaming) Decode(v string) error {
+	switch strings.ToLower(v) {
+	case "local":
+		*n = LocalNaming
+	case "full":
+		*n = FullNaming
+	case "domain":
+		*n = DomainNaming
+	default:
+		return fmt.Errorf("unknown MailboxNaming strategy: %q", v)
+	}
+	return nil
+}
+
+// Root contains global configuration, and structs with for specific sub-systems.
+type Root struct {
+	LogLevel      string `required:"true" default:"info" desc:"debug, info, warn, or error"`
+	Lua           Lua
+	MailboxNaming mbNaming `required:"true" default:"local" desc:"Use local, full, or domain addressing"`
+	SMTP          SMTP
+	POP3          POP3
+	Web           Web
+	Storage       Storage
+}
+
+// Lua contains the Lua extension host configuration.
+type Lua struct {
+	Path string `required:"false" default:"inbucket.lua" desc:"Lua script path"`
+}
+
+// SMTP contains the SMTP server configuration.
+type SMTP struct {
+	Addr                string        `required:"true" default:"0.0.0.0:2500" desc:"SMTP server IP4 host:port"`
+	Domain              string        `required:"true" default:"inbucket" desc:"HELO domain"`
+	MaxRecipients       int           `required:"true" default:"200" desc:"Maximum RCPT TO per message"`
+	MaxMessageBytes     int           `required:"true" default:"10240000" desc:"Maximum message size"`
+	DefaultAccept       bool          `required:"true" default:"true" desc:"Accept all mail by default?"`
+	AcceptDomains       []string      `desc:"Domains to accept mail for"`
+	RejectDomains       []string      `desc:"Domains to reject mail for"`
+	DefaultStore        bool          `required:"true" default:"true" desc:"Store all mail by default?"`
+	StoreDomains        []string      `desc:"Domains to store mail for"`
+	DiscardDomains      []string      `desc:"Domains to discard mail for"`
+	RejectOriginDomains []string      `desc:"Domains to reject mail from"`
+	Timeout             time.Duration `required:"true" default:"300s" desc:"Idle network timeout"`
+	TLSEnabled          bool          `default:"false" desc:"Enable STARTTLS option"`
+	TLSPrivKey          string        `default:"cert.key" desc:"X509 Private Key file for TLS Support"`
+	TLSCert             string        `default:"cert.crt" desc:"X509 Public Certificate file for TLS Support"`
+	Debug               bool          `ignored:"true"`
+	ForceTLS            bool          `default:"false" desc:"Listen for connections with TLS."`
+}
+
+// POP3 contains the POP3 server configuration.
+type POP3 struct {
+	Addr       string        `required:"true" default:"0.0.0.0:1100" desc:"POP3 server IP4 host:port"`
+	Domain     string        `required:"true" default:"inbucket" desc:"HELLO domain"`
+	Timeout    time.Duration `required:"true" default:"600s" desc:"Idle network timeout"`
+	Debug      bool          `ignored:"true"`
+	TLSEnabled bool          `default:"false" desc:"Enable TLS"`
+	TLSPrivKey string        `default:"cert.key" desc:"X509 Private Key file for TLS Support"`
+	TLSCert    string        `default:"cert.crt" desc:"X509 Public Certificate file for TLS Support"`
+	ForceTLS   bool          `default:"false" desc:"If true, TLS is always on. If false, enable STLS"`
+}
+
+// Web contains the HTTP server configuration.
+type Web struct {
+	Addr           string `required:"true" default:"0.0.0.0:9000" desc:"Web server IP4 host:port"`
+	BasePath       string `default:"" desc:"Base path prefix for UI and API URLs"`
+	UIDir          string `required:"true" default:"ui/dist" desc:"User interface dir"`
+	GreetingFile   string `required:"true" default:"ui/greeting.html" desc:"Home page greeting HTML"`
+	MonitorVisible bool   `required:"true" default:"true" desc:"Show monitor tab in UI?"`
+	MonitorHistory int    `required:"true" default:"30" desc:"Monitor remembered messages"`
+	PProf          bool   `required:"true" default:"false" desc:"Expose profiling tools on /debug/pprof"`
+}
+
+// Storage contains the mail store configuration.
+type Storage struct {
+	Type            string            `required:"true" default:"memory" desc:"Storage impl: file or memory"`
+	Params          map[string]string `desc:"Storage impl parameters, see docs."`
+	RetentionPeriod time.Duration     `required:"true" default:"24h" desc:"Duration to retain messages"`
+	RetentionSleep  time.Duration     `required:"true" default:"50ms" desc:"Duration to sleep between mailboxes"`
+	MailboxMsgCap   int               `required:"true" default:"500" desc:"Maximum messages per mailbox"`
+}
+
+// Process loads and parses configuration from the environment.
+func Process() (*Root, error) {
+	c := &Root{}
+	err := envconfig.Process(prefix, c)
+	c.LogLevel = strings.ToLower(c.LogLevel)
+	stringutil.SliceToLower(c.SMTP.AcceptDomains)
+	stringutil.SliceToLower(c.SMTP.RejectDomains)
+	stringutil.SliceToLower(c.SMTP.StoreDomains)
+	stringutil.SliceToLower(c.SMTP.DiscardDomains)
+	stringutil.SliceToLower(c.SMTP.RejectOriginDomains)
+	return c, err
+}
+
+// Usage prints out the envconfig usage to Stderr.
+func Usage() {
+	tabs := tabwriter.NewWriter(os.Stderr, 1, 0, 4, ' ', 0)
+	if err := envconfig.Usagef(prefix, &Root{}, tabs, tableFormat); err != nil {
+		log.Fatalf("Unable to parse env config: %v", err)
+	}
+	tabs.Flush()
+}

pkg/extension/async_broker.go

@@ -0,0 +1,89 @@
+package extension
+
+import (
+	"errors"
+	"sync"
+	"time"
+)
+
+// AsyncEventBroker maintains a list of listeners interested in a specific type
+// of event.  Events are sent in parallel to all listeners, and no result is
+// returned.
+type AsyncEventBroker[E any] struct {
+	sync.RWMutex
+	listenerNames []string  // Ordered listener names.
+	listenerFuncs []func(E) // Ordered listener functions.
+}
+
+// Emit sends the provided event to each registered listener in parallel.
+func (eb *AsyncEventBroker[E]) Emit(event *E) {
+	eb.RLock()
+	defer eb.RUnlock()
+
+	for _, l := range eb.listenerFuncs {
+		// Events are copied to minimize the risk of mutation.
+		go l(*event)
+	}
+}
+
+// AddListener registers the named listener, replacing one with a duplicate
+// name if present.  Listeners should be added in order of priority, most
+// significant first.
+func (eb *AsyncEventBroker[E]) AddListener(name string, listener func(E)) {
+	eb.Lock()
+	defer eb.Unlock()
+
+	eb.lockedRemoveListener(name)
+	eb.listenerNames = append(eb.listenerNames, name)
+	eb.listenerFuncs = append(eb.listenerFuncs, listener)
+}
+
+// RemoveListener unregisters the named listener.
+func (eb *AsyncEventBroker[E]) RemoveListener(name string) {
+	eb.Lock()
+	defer eb.Unlock()
+
+	eb.lockedRemoveListener(name)
+}
+
+func (eb *AsyncEventBroker[E]) lockedRemoveListener(name string) {
+	for i, entry := range eb.listenerNames {
+		if entry == name {
+			eb.listenerNames = append(eb.listenerNames[:i], eb.listenerNames[i+1:]...)
+			eb.listenerFuncs = append(eb.listenerFuncs[:i], eb.listenerFuncs[i+1:]...)
+			break
+		}
+	}
+}
+
+// AsyncTestListener returns a func that will wait for an event and return it, or timeout
+// with an error.
+func (eb *AsyncEventBroker[E]) AsyncTestListener(name string, capacity int) func() (*E, error) {
+	// Send event down channel.
+	events := make(chan E, capacity)
+	eb.AddListener(name,
+		func(msg E) {
+			events <- msg
+		})
+
+	count := 0
+
+	return func() (*E, error) {
+		count++
+
+		defer func() {
+			if count >= capacity {
+				eb.RemoveListener(name)
+				close(events)
+			}
+		}()
+
+		select {
+		case event := <-events:
+			return &event, nil
+
+		case <-time.After(time.Second * 2):
+			return nil, errors.New("timeout waiting for event")
+		}
+	}
+}

pkg/extension/async_broker_test.go

@@ -0,0 +1,101 @@
+package extension_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// Simple smoke test without using AsyncTestListener.
+func TestAsyncBrokerEmitCallsOneListener(t *testing.T) {
+	broker := &extension.AsyncEventBroker[string]{}
+
+	// Setup listener.
+	events := make(chan string, 1)
+	listener := func(s string) {
+		events <- s
+	}
+	broker.AddListener("x", listener)
+
+	want := "bacon"
+	broker.Emit(&want)
+
+	var got string
+	select {
+	case event := <-events:
+		got = event
+
+	case <-time.After(time.Second * 2):
+		t.Fatal("Timeout waiting for event")
+	}
+
+	if got != want {
+		t.Errorf("Emit got %q, want %q", got, want)
+	}
+}
+
+func TestAsyncBrokerEmitCallsMultipleListeners(t *testing.T) {
+	broker := &extension.AsyncEventBroker[string]{}
+
+	// Setup listeners.
+	first := broker.AsyncTestListener("first", 1)
+	second := broker.AsyncTestListener("second", 1)
+
+	want := "hi"
+	broker.Emit(&want)
+
+	firstGot, err := first()
+	require.NoError(t, err)
+	assert.Equal(t, want, *firstGot)
+
+	secondGot, err := second()
+	require.NoError(t, err)
+	assert.Equal(t, want, *secondGot)
+}
+
+func TestAsyncBrokerAddingDuplicateNameReplacesPrevious(t *testing.T) {
+	broker := &extension.AsyncEventBroker[string]{}
+
+	// Setup listeners.
+	first := broker.AsyncTestListener("dup", 1)
+	second := broker.AsyncTestListener("dup", 1)
+
+	want := "hi"
+	broker.Emit(&want)
+
+	firstGot, err := first()
+	require.Error(t, err)
+	assert.Nil(t, firstGot)
+
+	secondGot, err := second()
+	require.NoError(t, err)
+	assert.Equal(t, want, *secondGot)
+}
+
+func TestAsyncBrokerRemovingListenerSuccessful(t *testing.T) {
+	broker := &extension.AsyncEventBroker[string]{}
+
+	// Setup listeners.
+	first := broker.AsyncTestListener("1", 1)
+	second := broker.AsyncTestListener("2", 1)
+	broker.RemoveListener("1")
+
+	want := "hi"
+	broker.Emit(&want)
+
+	firstGot, err := first()
+	require.Error(t, err)
+	assert.Nil(t, firstGot)
+
+	secondGot, err := second()
+	require.NoError(t, err)
+	assert.Equal(t, want, *secondGot)
+}
+
+func TestAsyncBrokerRemovingMissingListener(t *testing.T) {
+	broker := &extension.AsyncEventBroker[string]{}
+	broker.RemoveListener("doesn't crash")
+}

pkg/extension/broker.go

@@ -0,0 +1,59 @@
+package extension
+
+import (
+	"sync"
+)
+
+// EventBroker maintains a list of listeners interested in a specific type
+// of event.
+type EventBroker[E any, R interface{}] struct {
+	sync.RWMutex
+	listenerNames []string     // Ordered listener names.
+	listenerFuncs []func(E) *R // Ordered listener functions.
+}
+
+// Emit sends the provided event to each registered listener in order, until
+// one returns a non-nil result.  That result will be returned to the caller.
+func (eb *EventBroker[E, R]) Emit(event *E) *R {
+	eb.RLock()
+	defer eb.RUnlock()
+
+	for _, l := range eb.listenerFuncs {
+		// Events are copied to minimize the risk of mutation.
+		if result := l(*event); result != nil {
+			return result
+		}
+	}
+
+	return nil
+}
+
+// AddListener registers the named listener, replacing one with a duplicate
+// name if present.  Listeners should be added in order of priority, most
+// significant first.
+func (eb *EventBroker[E, R]) AddListener(name string, listener func(E) *R) {
+	eb.Lock()
+	defer eb.Unlock()
+
+	eb.lockedRemoveListener(name)
+	eb.listenerNames = append(eb.listenerNames, name)
+	eb.listenerFuncs = append(eb.listenerFuncs, listener)
+}
+
+// RemoveListener unregisters the named listener.
+func (eb *EventBroker[E, R]) RemoveListener(name string) {
+	eb.Lock()
+	defer eb.Unlock()
+
+	eb.lockedRemoveListener(name)
+}
+
+func (eb *EventBroker[E, R]) lockedRemoveListener(name string) {
+	for i, entry := range eb.listenerNames {
+		if entry == name {
+			eb.listenerNames = append(eb.listenerNames[:i], eb.listenerNames[i+1:]...)
+			eb.listenerFuncs = append(eb.listenerFuncs[:i], eb.listenerFuncs[i+1:]...)
+			break
+		}
+	}
+}

pkg/extension/broker_test.go

@@ -0,0 +1,134 @@
+package extension_test
+
+import (
+	"testing"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension"
+)
+
+func TestBrokerEmitCallsOneListener(t *testing.T) {
+	broker := &extension.EventBroker[string, bool]{}
+
+	// Setup listener.
+	var got string
+	listener := func(s string) *bool {
+		got = s
+		return nil
+	}
+	broker.AddListener("x", listener)
+
+	want := "bacon"
+	broker.Emit(&want)
+	if got != want {
+		t.Errorf("Emit got %q, want %q", got, want)
+	}
+}
+
+func TestBrokerEmitCallsMultipleListeners(t *testing.T) {
+	broker := &extension.EventBroker[string, bool]{}
+
+	// Setup listeners.
+	var firstGot, secondGot string
+	first := func(s string) *bool {
+		firstGot = s
+		return nil
+	}
+	second := func(s string) *bool {
+		secondGot = s
+		return nil
+	}
+
+	broker.AddListener("1", first)
+	broker.AddListener("2", second)
+
+	want := "hi"
+	broker.Emit(&want)
+	if firstGot != want {
+		t.Errorf("first got %q, want %q", firstGot, want)
+	}
+	if secondGot != want {
+		t.Errorf("second got %q, want %q", secondGot, want)
+	}
+}
+
+func TestBrokerEmitCapturesFirstResult(t *testing.T) {
+	broker := &extension.EventBroker[struct{}, string]{}
+
+	// Setup listeners.
+	makeListener := func(result *string) func(struct{}) *string {
+		return func(s struct{}) *string { return result }
+	}
+	first := "first"
+	second := "second"
+	broker.AddListener("0", makeListener(nil))
+	broker.AddListener("1", makeListener(&first))
+	broker.AddListener("2", makeListener(&second))
+
+	want := first
+	got := broker.Emit(&struct{}{})
+	if got == nil {
+		t.Errorf("Emit got nil, want %q", want)
+	} else if *got != want {
+		t.Errorf("Emit got %q, want %q", *got, want)
+	}
+}
+
+func TestBrokerAddingDuplicateNameReplacesPrevious(t *testing.T) {
+	broker := &extension.EventBroker[string, bool]{}
+
+	// Setup listeners.
+	var firstGot, secondGot string
+	first := func(s string) *bool {
+		firstGot = s
+		return nil
+	}
+	second := func(s string) *bool {
+		secondGot = s
+		return nil
+	}
+
+	broker.AddListener("dup", first)
+	broker.AddListener("dup", second)
+
+	want := "hi"
+	broker.Emit(&want)
+	if firstGot != "" {
+		t.Errorf("first got %q, want empty string", firstGot)
+	}
+	if secondGot != want {
+		t.Errorf("second got %q, want %q", secondGot, want)
+	}
+}
+
+func TestBrokerRemovingListenerSuccessful(t *testing.T) {
+	broker := &extension.EventBroker[string, bool]{}
+
+	// Setup listeners.
+	var firstGot, secondGot string
+	first := func(s string) *bool {
+		firstGot = s
+		return nil
+	}
+	second := func(s string) *bool {
+		secondGot = s
+		return nil
+	}
+
+	broker.AddListener("1", first)
+	broker.AddListener("2", second)
+	broker.RemoveListener("1")
+
+	want := "hi"
+	broker.Emit(&want)
+	if firstGot != "" {
+		t.Errorf("first got %q, want empty string", firstGot)
+	}
+	if secondGot != want {
+		t.Errorf("second got %q, want %q", secondGot, want)
+	}
+}
+
+func TestBrokerRemovingMissingListener(t *testing.T) {
+	broker := &extension.EventBroker[string, bool]{}
+	broker.RemoveListener("doesn't crash")
+}

pkg/extension/event/events.go

@@ -0,0 +1,56 @@
+package event
+
+import (
+	"net/mail"
+	"time"
+)
+
+const (
+	// ActionDefer defers decision to built-in Inbucket logic.
+	ActionDefer = iota
+	// ActionAllow explicitly allows this event.
+	ActionAllow
+	// ActionDeny explicitly deny this event, typically with specified SMTP error.
+	ActionDeny
+)
+
+// AddressParts contains the local and domain parts of an email address.
+type AddressParts struct {
+	Local  string
+	Domain string
+}
+
+// InboundMessage contains the basic header and mailbox data for a message being received.
+type InboundMessage struct {
+	Mailboxes []string
+	From      *mail.Address
+	To        []*mail.Address
+	Subject   string
+	Size      int64
+}
+
+// MessageMetadata contains the basic header data for a message event.
+type MessageMetadata struct {
+	Mailbox string
+	ID      string
+	From    *mail.Address
+	To      []*mail.Address
+	Date    time.Time
+	Subject string
+	Size    int64
+	Seen    bool
+}
+
+// SMTPResponse describes the response to an SMTP policy check.
+type SMTPResponse struct {
+	Action    int    // ActionDefer, ActionAllow, etc.
+	ErrorCode int    // SMTP error code to respond with on deny.
+	ErrorMsg  string // SMTP error message to respond with on deny.
+}
+
+// SMTPSession captures SMTP `MAIL FROM` & `RCPT TO` values prior to mail DATA being received.
+type SMTPSession struct {
+	From       *mail.Address
+	To         []*mail.Address
+	RemoteAddr string
+}

pkg/extension/host.go

@@ -0,0 +1,36 @@
+package extension
+
+import (
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+)
+
+// Host defines extension points for Inbucket.
+type Host struct {
+	Events *Events
+}
+
+// Events defines all the event types supported by the extension host.
+//
+// Before-events provide an opportunity for extensions to alter how Inbucket responds to that type
+// of event.  These events are processed synchronously; expensive operations will reduce the
+// perceived performance of Inbucket.  The first listener in the list to respond with a non-nil
+// value will determine the response, and the remaining listeners will not be called.
+//
+// After-events allow extensions to take an action after an event has completed.  These events are
+// processed asynchronously with respect to the rest of Inbuckets operation.  However, an event
+// listener will not be called until the one before it completes.
+type Events struct {
+	AfterMessageDeleted    AsyncEventBroker[event.MessageMetadata]
+	AfterMessageStored     AsyncEventBroker[event.MessageMetadata]
+	BeforeMailFromAccepted EventBroker[event.SMTPSession, event.SMTPResponse]
+	BeforeMessageStored    EventBroker[event.InboundMessage, event.InboundMessage]
+	BeforeRcptToAccepted   EventBroker[event.SMTPSession, event.SMTPResponse]
+}
+
+// Void indicates the event emitter will ignore any value returned by listeners.
+type Void struct{}
+
+// NewHost creates a new extension host.
+func NewHost() *Host {
+	return &Host{Events: &Events{}}
+}

pkg/extension/luahost/bind_address.go

@@ -0,0 +1,92 @@
+package luahost
+
+import (
+	"net/mail"
+
+	lua "github.com/yuin/gopher-lua"
+)
+
+const mailAddressName = "address"
+
+func registerMailAddressType(ls *lua.LState) {
+	mt := ls.NewTypeMetatable(mailAddressName)
+	ls.SetGlobal(mailAddressName, mt)
+
+	// Static attributes.
+	ls.SetField(mt, "new", ls.NewFunction(newMailAddress))
+
+	// Methods.
+	ls.SetField(mt, "__index", ls.NewFunction(mailAddressIndex))
+	ls.SetField(mt, "__newindex", ls.NewFunction(mailAddressNewIndex))
+}
+
+func newMailAddress(ls *lua.LState) int {
+	val := &mail.Address{
+		Name:    ls.CheckString(1),
+		Address: ls.CheckString(2),
+	}
+	ud := wrapMailAddress(ls, val)
+	ls.Push(ud)
+
+	return 1
+}
+
+func wrapMailAddress(ls *lua.LState, val *mail.Address) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(mailAddressName))
+
+	return ud
+}
+
+func unwrapMailAddress(ud *lua.LUserData) (*mail.Address, bool) {
+	val, ok := ud.Value.(*mail.Address)
+	return val, ok
+}
+
+func checkMailAddress(ls *lua.LState, pos int) *mail.Address {
+	ud := ls.CheckUserData(pos)
+	if val, ok := ud.Value.(*mail.Address); ok {
+		return val
+	}
+	ls.ArgError(1, mailAddressName+" expected")
+	return nil
+}
+
+// Gets a field value from MailAddress user object.  This emulates a Lua table,
+// allowing `msg.subject` instead of a Lua object syntax of `msg:subject()`.
+func mailAddressIndex(ls *lua.LState) int {
+	a := checkMailAddress(ls, 1)
+	field := ls.CheckString(2)
+
+	// Push the requested field's value onto the stack.
+	switch field {
+	case "name":
+		ls.Push(lua.LString(a.Name))
+	case "address":
+		ls.Push(lua.LString(a.Address))
+	default:
+		// Unknown field.
+		ls.Push(lua.LNil)
+	}
+
+	return 1
+}
+
+// Sets a field value on MailAddress user object.  This emulates a Lua table,
+// allowing `msg.subject = x` instead of a Lua object syntax of `msg:subject(x)`.
+func mailAddressNewIndex(ls *lua.LState) int {
+	a := checkMailAddress(ls, 1)
+	index := ls.CheckString(2)
+
+	switch index {
+	case "name":
+		a.Name = ls.CheckString(3)
+	case "address":
+		a.Address = ls.CheckString(3)
+	default:
+		ls.RaiseError("invalid index %q", index)
+	}
+
+	return 0
+}

pkg/extension/luahost/bind_address_test.go

@@ -0,0 +1,56 @@
+package luahost
+
+import (
+	"net/mail"
+	"testing"
+
+	"github.com/inbucket/inbucket/v3/pkg/test"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMailAddressGetters(t *testing.T) {
+	want := &mail.Address{
+		Name:    "Roberto I",
+		Address: "ri@example.com",
+	}
+	script := `
+		assert(addr, "addr should not be nil")
+
+		want = "Roberto I"
+		got = addr.name
+		assert(got == want, string.format("got name %q, want %q", got, want))
+
+		want = "ri@example.com"
+		got = addr.address
+		assert(got == want, string.format("got address %q, want %q", got, want))
+	`
+
+	ls, _ := test.NewLuaState()
+	registerMailAddressType(ls)
+
+	ls.SetGlobal("addr", wrapMailAddress(ls, want))
+	require.NoError(t, ls.DoString(script))
+}
+
+func TestMailAddressSetters(t *testing.T) {
+	want := &mail.Address{
+		Name:    "Roberto I",
+		Address: "ri@example.com",
+	}
+	script := `
+		assert(addr, "addr should not be nil")
+
+		addr.name = "Roberto I"
+		addr.address = "ri@example.com"
+	`
+
+	ls, _ := test.NewLuaState()
+	registerMailAddressType(ls)
+
+	got := &mail.Address{}
+	ls.SetGlobal("addr", wrapMailAddress(ls, got))
+	require.NoError(t, ls.DoString(script))
+
+	assert.Equal(t, want, got)
+}

pkg/extension/luahost/bind_inboundmessage.go

@@ -0,0 +1,135 @@
+package luahost
+
+import (
+	"fmt"
+	"net/mail"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	lua "github.com/yuin/gopher-lua"
+)
+
+const inboundMessageName = "inbound_message"
+
+func registerInboundMessageType(ls *lua.LState) {
+	mt := ls.NewTypeMetatable(inboundMessageName)
+	ls.SetGlobal(inboundMessageName, mt)
+
+	// Static attributes.
+	ls.SetField(mt, "new", ls.NewFunction(newInboundMessage))
+
+	// Methods.
+	ls.SetField(mt, "__index", ls.NewFunction(inboundMessageIndex))
+	ls.SetField(mt, "__newindex", ls.NewFunction(inboundMessageNewIndex))
+}
+
+func newInboundMessage(ls *lua.LState) int {
+	val := &event.InboundMessage{}
+	ud := wrapInboundMessage(ls, val)
+	ls.Push(ud)
+
+	return 1
+}
+
+func wrapInboundMessage(ls *lua.LState, val *event.InboundMessage) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(inboundMessageName))
+
+	return ud
+}
+
+// Checks there is an InboundMessage at stack position `pos`, else throws Lua error.
+func checkInboundMessage(ls *lua.LState, pos int) *event.InboundMessage {
+	ud := ls.CheckUserData(pos)
+	if v, ok := ud.Value.(*event.InboundMessage); ok {
+		return v
+	}
+	ls.ArgError(pos, inboundMessageName+" expected")
+	return nil
+}
+
+func unwrapInboundMessage(lv lua.LValue) (*event.InboundMessage, error) {
+	if ud, ok := lv.(*lua.LUserData); ok {
+		if v, ok := ud.Value.(*event.InboundMessage); ok {
+			return v, nil
+		}
+	}
+
+	return nil, fmt.Errorf("expected InboundMessage, got %q", lv.Type().String())
+}
+
+// Gets a field value from InboundMessage user object.  This emulates a Lua table,
+// allowing `msg.subject` instead of a Lua object syntax of `msg:subject()`.
+func inboundMessageIndex(ls *lua.LState) int {
+	m := checkInboundMessage(ls, 1)
+	field := ls.CheckString(2)
+
+	// Push the requested field's value onto the stack.
+	switch field {
+	case "mailboxes":
+		lt := &lua.LTable{}
+		for _, v := range m.Mailboxes {
+			lt.Append(lua.LString(v))
+		}
+		ls.Push(lt)
+	case "from":
+		ls.Push(wrapMailAddress(ls, m.From))
+	case "to":
+		lt := &lua.LTable{}
+		for _, v := range m.To {
+			addr := v
+			lt.Append(wrapMailAddress(ls, addr))
+		}
+		ls.Push(lt)
+	case "subject":
+		ls.Push(lua.LString(m.Subject))
+	case "size":
+		ls.Push(lua.LNumber(m.Size))
+	default:
+		// Unknown field.
+		ls.Push(lua.LNil)
+	}
+
+	return 1
+}
+
+// Sets a field value on InboundMessage user object.  This emulates a Lua table,
+// allowing `msg.subject = x` instead of a Lua object syntax of `msg:subject(x)`.
+func inboundMessageNewIndex(ls *lua.LState) int {
+	m := checkInboundMessage(ls, 1)
+	index := ls.CheckString(2)
+
+	switch index {
+	case "mailboxes":
+		lt := ls.CheckTable(3)
+		mailboxes := make([]string, 0, 16)
+		lt.ForEach(func(k, lv lua.LValue) {
+			if mb, ok := lv.(lua.LString); ok {
+				mailboxes = append(mailboxes, string(mb))
+			}
+		})
+		m.Mailboxes = mailboxes
+	case "from":
+		m.From = checkMailAddress(ls, 3)
+	case "to":
+		lt := ls.CheckTable(3)
+		to := make([]*mail.Address, 0, 16)
+		lt.ForEach(func(k, lv lua.LValue) {
+			if ud, ok := lv.(*lua.LUserData); ok {
+				// TODO should fail if wrong type + test.
+				if entry, ok := unwrapMailAddress(ud); ok {
+					to = append(to, entry)
+				}
+			}
+		})
+		m.To = to
+	case "subject":
+		m.Subject = ls.CheckString(3)
+	case "size":
+		ls.RaiseError("size is read-only")
+	default:
+		ls.RaiseError("invalid index %q", index)
+	}
+
+	return 0
+}

pkg/extension/luahost/bind_inboundmessage_test.go

@@ -0,0 +1,75 @@
+package luahost
+
+import (
+	"net/mail"
+	"testing"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	"github.com/inbucket/inbucket/v3/pkg/test"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInboundMessageGetters(t *testing.T) {
+	want := &event.InboundMessage{
+		Mailboxes: []string{"mb1", "mb2"},
+		From:      &mail.Address{Name: "name1", Address: "addr1"},
+		To: []*mail.Address{
+			{Name: "name2", Address: "addr2"},
+			{Name: "name3", Address: "addr3"},
+		},
+		Subject: "subj1",
+		Size:    42,
+	}
+	script := `
+		assert(msg, "msg should not be nil")
+
+		assert_eq(msg.mailboxes, {"mb1", "mb2"})
+		assert_eq(msg.subject, "subj1")
+		assert_eq(msg.size, 42, "msg.size")
+
+		assert_eq(msg.from.name, "name1", "from.name")
+		assert_eq(msg.from.address, "addr1", "from.address")
+
+		assert_eq(#msg.to, 2, "#msg.to")
+		assert_eq(msg.to[1].name, "name2", "to[1].name")
+		assert_eq(msg.to[1].address, "addr2", "to[1].address")
+		assert_eq(msg.to[2].name, "name3", "to[2].name")
+		assert_eq(msg.to[2].address, "addr3", "to[2].address")
+	`
+
+	ls, _ := test.NewLuaState()
+	registerInboundMessageType(ls)
+	registerMailAddressType(ls)
+	ls.SetGlobal("msg", wrapInboundMessage(ls, want))
+	require.NoError(t, ls.DoString(script))
+}
+
+func TestInboundMessageSetters(t *testing.T) {
+	want := &event.InboundMessage{
+		Mailboxes: []string{"mb1", "mb2"},
+		From:      &mail.Address{Name: "name1", Address: "addr1"},
+		To: []*mail.Address{
+			{Name: "name2", Address: "addr2"},
+			{Name: "name3", Address: "addr3"},
+		},
+		Subject: "subj1",
+	}
+	script := `
+		assert(msg, "msg should not be nil")
+
+		msg.mailboxes = {"mb1", "mb2"}
+		msg.subject = "subj1"
+		msg.from = address.new("name1", "addr1")
+		msg.to = { address.new("name2", "addr2"), address.new("name3", "addr3") }
+	`
+
+	got := &event.InboundMessage{}
+	ls, _ := test.NewLuaState()
+	registerInboundMessageType(ls)
+	registerMailAddressType(ls)
+	ls.SetGlobal("msg", wrapInboundMessage(ls, got))
+	require.NoError(t, ls.DoString(script))
+
+	assert.Equal(t, want, got)
+}

pkg/extension/luahost/bind_inbucket.go

@@ -0,0 +1,228 @@
+package luahost
+
+import (
+	"errors"
+	"fmt"
+
+	lua "github.com/yuin/gopher-lua"
+)
+
+const (
+	inbucketName       = "inbucket"
+	inbucketBeforeName = "inbucket_before"
+	inbucketAfterName  = "inbucket_after"
+)
+
+// Inbucket is the primary Lua interface data structure.
+type Inbucket struct {
+	After  InbucketAfterFuncs
+	Before InbucketBeforeFuncs
+}
+
+// InbucketAfterFuncs holds references to Lua extension functions to be called async
+// after Inbucket handles an event.
+type InbucketAfterFuncs struct {
+	MessageDeleted *lua.LFunction
+	MessageStored  *lua.LFunction
+}
+
+// InbucketBeforeFuncs holds references to Lua extension functions to be called
+// before Inbucket handles an event.
+type InbucketBeforeFuncs struct {
+	MailFromAccepted *lua.LFunction
+	MessageStored    *lua.LFunction
+	RcptToAccepted   *lua.LFunction
+}
+
+func registerInbucketTypes(ls *lua.LState) {
+	// inbucket type.
+	mt := ls.NewTypeMetatable(inbucketName)
+	ls.SetField(mt, "__index", ls.NewFunction(inbucketIndex))
+
+	// inbucket global var.
+	ud := wrapInbucket(ls, &Inbucket{})
+	ls.SetGlobal(inbucketName, ud)
+
+	// inbucket.after type.
+	mt = ls.NewTypeMetatable(inbucketAfterName)
+	ls.SetField(mt, "__index", ls.NewFunction(inbucketAfterIndex))
+	ls.SetField(mt, "__newindex", ls.NewFunction(inbucketAfterNewIndex))
+
+	// inbucket.before type.
+	mt = ls.NewTypeMetatable(inbucketBeforeName)
+	ls.SetField(mt, "__index", ls.NewFunction(inbucketBeforeIndex))
+	ls.SetField(mt, "__newindex", ls.NewFunction(inbucketBeforeNewIndex))
+}
+
+func wrapInbucket(ls *lua.LState, val *Inbucket) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(inbucketName))
+
+	return ud
+}
+
+func wrapInbucketAfter(ls *lua.LState, val *InbucketAfterFuncs) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(inbucketAfterName))
+
+	return ud
+}
+
+func wrapInbucketBefore(ls *lua.LState, val *InbucketBeforeFuncs) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(inbucketBeforeName))
+
+	return ud
+}
+
+func getInbucket(ls *lua.LState) (*Inbucket, error) {
+	lv := ls.GetGlobal(inbucketName)
+	if lv == nil {
+		return nil, errors.New("inbucket object was nil")
+	}
+
+	ud, ok := lv.(*lua.LUserData)
+	if !ok {
+		return nil, fmt.Errorf("inbucket object was type %s instead of UserData", lv.Type())
+	}
+
+	val, ok := ud.Value.(*Inbucket)
+	if !ok {
+		return nil, fmt.Errorf("inbucket object (%v) could not be cast", ud.Value)
+	}
+
+	return val, nil
+}
+
+func checkInbucket(ls *lua.LState, pos int) *Inbucket {
+	ud := ls.CheckUserData(pos)
+	if val, ok := ud.Value.(*Inbucket); ok {
+		return val
+	}
+	ls.ArgError(1, inbucketName+" expected")
+	return nil
+}
+
+func checkInbucketAfter(ls *lua.LState, pos int) *InbucketAfterFuncs {
+	ud := ls.CheckUserData(pos)
+	if val, ok := ud.Value.(*InbucketAfterFuncs); ok {
+		return val
+	}
+	ls.ArgError(1, inbucketAfterName+" expected")
+	return nil
+}
+
+func checkInbucketBefore(ls *lua.LState, pos int) *InbucketBeforeFuncs {
+	ud := ls.CheckUserData(pos)
+	if val, ok := ud.Value.(*InbucketBeforeFuncs); ok {
+		return val
+	}
+	ls.ArgError(1, inbucketBeforeName+" expected")
+	return nil
+}
+
+// inbucket getter.
+func inbucketIndex(ls *lua.LState) int {
+	ib := checkInbucket(ls, 1)
+	field := ls.CheckString(2)
+
+	// Push the requested field's value onto the stack.
+	switch field {
+	case "after":
+		ls.Push(wrapInbucketAfter(ls, &ib.After))
+	case "before":
+		ls.Push(wrapInbucketBefore(ls, &ib.Before))
+	default:
+		// Unknown field.
+		ls.Push(lua.LNil)
+	}
+
+	return 1
+}
+
+// inbucket.after getter.
+func inbucketAfterIndex(ls *lua.LState) int {
+	after := checkInbucketAfter(ls, 1)
+	field := ls.CheckString(2)
+
+	// Push the requested field's value onto the stack.
+	switch field {
+	case "message_deleted":
+		ls.Push(funcOrNil(after.MessageDeleted))
+	case "message_stored":
+		ls.Push(funcOrNil(after.MessageStored))
+	default:
+		// Unknown field.
+		ls.Push(lua.LNil)
+	}
+
+	return 1
+}
+
+// inbucket.after setter.
+func inbucketAfterNewIndex(ls *lua.LState) int {
+	m := checkInbucketAfter(ls, 1)
+	index := ls.CheckString(2)
+
+	switch index {
+	case "message_deleted":
+		m.MessageDeleted = ls.CheckFunction(3)
+	case "message_stored":
+		m.MessageStored = ls.CheckFunction(3)
+	default:
+		ls.RaiseError("invalid inbucket.after index %q", index)
+	}
+
+	return 0
+}
+
+// inbucket.before getter.
+func inbucketBeforeIndex(ls *lua.LState) int {
+	before := checkInbucketBefore(ls, 1)
+	field := ls.CheckString(2)
+
+	// Push the requested field's value onto the stack.
+	switch field {
+	case "mail_from_accepted":
+		ls.Push(funcOrNil(before.MailFromAccepted))
+	case "message_stored":
+		ls.Push(funcOrNil(before.MessageStored))
+	case "rcpt_to_accepted":
+		ls.Push(funcOrNil(before.RcptToAccepted))
+	default:
+		// Unknown field.
+		ls.Push(lua.LNil)
+	}
+
+	return 1
+}
+
+// inbucket.before setter.
+func inbucketBeforeNewIndex(ls *lua.LState) int {
+	m := checkInbucketBefore(ls, 1)
+	index := ls.CheckString(2)
+
+	switch index {
+	case "mail_from_accepted":
+		m.MailFromAccepted = ls.CheckFunction(3)
+	case "message_stored":
+		m.MessageStored = ls.CheckFunction(3)
+	case "rcpt_to_accepted":
+		m.RcptToAccepted = ls.CheckFunction(3)
+	default:
+		ls.RaiseError("invalid inbucket.before index %q", index)
+	}
+
+	return 0
+}
+
+func funcOrNil(f *lua.LFunction) lua.LValue {
+	if f == nil {
+		return lua.LNil
+	}
+
+	return f
+}

pkg/extension/luahost/bind_inbucket_test.go

@@ -0,0 +1,102 @@
+package luahost
+
+import (
+	"testing"
+
+	"github.com/inbucket/inbucket/v3/pkg/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInbucketAfterFuncs(t *testing.T) {
+	// This Script registers each function and calls it.  No effort is made to use the arguments
+	// that Inbucket expects, this is only to validate the inbucket.after data structure getters
+	// and setters.
+	script := `
+		assert(inbucket, "inbucket should not be nil")
+		assert(inbucket.after, "inbucket.after should not be nil")
+
+		local fns = { "message_deleted", "message_stored" }
+
+		-- Verify functions start off nil.
+		for i, name in ipairs(fns) do
+			assert(inbucket.after[name] == nil, "after." .. name .. " should be nil")
+		end
+
+		-- Test function to track func calls made, ensures no crossed wires.
+		local calls = {}
+		function makeTestFunc(create_name)
+			return function(call_name)
+				calls[create_name] = call_name
+			end
+		end
+
+		-- Set after functions, verify not nil, and call them.
+		for i, name in ipairs(fns) do
+			inbucket.after[name] = makeTestFunc(name)
+			assert(inbucket.after[name], "after." .. name .. " should not be nil")
+		end
+
+		-- Call each function.  Separate loop to verify final state in 'calls'.
+		for i, name in ipairs(fns) do
+			inbucket.after[name](name)
+		end
+
+		-- Verify functions were called.
+		for i, name in ipairs(fns) do
+			assert(calls[name], "after." .. name .. " should have been called")
+			assert(calls[name] == name,
+				string.format("after.%s was called with incorrect argument %s", name, calls[name]))
+		end
+	`
+
+	ls, _ := test.NewLuaState()
+	registerInbucketTypes(ls)
+	require.NoError(t, ls.DoString(script))
+}
+
+func TestInbucketBeforeFuncs(t *testing.T) {
+	// This Script registers each function and calls it.  No effort is made to use the arguments
+	// that Inbucket expects, this is only to validate the inbucket.before data structure getters
+	// and setters.
+	script := `
+		assert(inbucket, "inbucket should not be nil")
+		assert(inbucket.before, "inbucket.before should not be nil")
+
+		local fns = { "mail_from_accepted", "message_stored", "rcpt_to_accepted" }
+
+		-- Verify functions start off nil.
+		for i, name in ipairs(fns) do
+			assert(inbucket.before[name] == nil, "before." .. name .. " should be nil")
+		end
+
+		-- Test function to track func calls made, ensures no crossed wires.
+		local calls = {}
+		function makeTestFunc(create_name)
+			return function(call_name)
+				calls[create_name] = call_name
+			end
+		end
+
+		-- Set before functions, verify not nil, and call them.
+		for i, name in ipairs(fns) do
+			inbucket.before[name] = makeTestFunc(name)
+			assert(inbucket.before[name], "before." .. name .. " should not be nil")
+		end
+
+		-- Call each function.  Separate loop to verify final state in 'calls'.
+		for i, name in ipairs(fns) do
+			inbucket.before[name](name)
+		end
+
+		-- Verify functions were called.
+		for i, name in ipairs(fns) do
+			assert(calls[name], "before." .. name .. " should have been called")
+			assert(calls[name] == name,
+				string.format("before.%s was called with incorrect argument %s", name, calls[name]))
+		end
+	`
+
+	ls, _ := test.NewLuaState()
+	registerInbucketTypes(ls)
+	require.NoError(t, ls.DoString(script))
+}

pkg/extension/luahost/bind_message.go

@@ -0,0 +1,120 @@
+package luahost
+
+import (
+	"net/mail"
+	"time"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	lua "github.com/yuin/gopher-lua"
+)
+
+const messageMetadataName = "message_metadata"
+
+func registerMessageMetadataType(ls *lua.LState) {
+	mt := ls.NewTypeMetatable(messageMetadataName)
+	ls.SetGlobal(messageMetadataName, mt)
+
+	// Static attributes.
+	ls.SetField(mt, "new", ls.NewFunction(newMessageMetadata))
+
+	// Methods.
+	ls.SetField(mt, "__index", ls.NewFunction(messageMetadataIndex))
+	ls.SetField(mt, "__newindex", ls.NewFunction(messageMetadataNewIndex))
+}
+
+func newMessageMetadata(ls *lua.LState) int {
+	val := &event.MessageMetadata{}
+	ud := wrapMessageMetadata(ls, val)
+	ls.Push(ud)
+
+	return 1
+}
+
+func wrapMessageMetadata(ls *lua.LState, val *event.MessageMetadata) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(messageMetadataName))
+
+	return ud
+}
+
+func checkMessageMetadata(ls *lua.LState, pos int) *event.MessageMetadata {
+	ud := ls.CheckUserData(pos)
+	if v, ok := ud.Value.(*event.MessageMetadata); ok {
+		return v
+	}
+	ls.ArgError(1, messageMetadataName+" expected")
+	return nil
+}
+
+// Gets a field value from MessageMetadata user object.  This emulates a Lua table,
+// allowing `msg.subject` instead of a Lua object syntax of `msg:subject()`.
+func messageMetadataIndex(ls *lua.LState) int {
+	m := checkMessageMetadata(ls, 1)
+	field := ls.CheckString(2)
+
+	// Push the requested field's value onto the stack.
+	switch field {
+	case "mailbox":
+		ls.Push(lua.LString(m.Mailbox))
+	case "id":
+		ls.Push(lua.LString(m.ID))
+	case "from":
+		ls.Push(wrapMailAddress(ls, m.From))
+	case "to":
+		lt := &lua.LTable{}
+		for _, v := range m.To {
+			lt.Append(wrapMailAddress(ls, v))
+		}
+		ls.Push(lt)
+	case "date":
+		ls.Push(lua.LNumber(m.Date.Unix()))
+	case "subject":
+		ls.Push(lua.LString(m.Subject))
+	case "size":
+		ls.Push(lua.LNumber(m.Size))
+	default:
+		// Unknown field.
+		ls.Push(lua.LNil)
+	}
+
+	return 1
+}
+
+// Sets a field value on MessageMetadata user object.  This emulates a Lua table,
+// allowing `msg.subject = x` instead of a Lua object syntax of `msg:subject(x)`.
+func messageMetadataNewIndex(ls *lua.LState) int {
+	m := checkMessageMetadata(ls, 1)
+	index := ls.CheckString(2)
+
+	switch index {
+	case "mailbox":
+		m.Mailbox = ls.CheckString(3)
+	case "id":
+		m.ID = ls.CheckString(3)
+	case "from":
+		m.From = checkMailAddress(ls, 3)
+	case "to":
+		lt := ls.CheckTable(3)
+		to := make([]*mail.Address, 0, 16)
+		lt.ForEach(func(k, lv lua.LValue) {
+			if ud, ok := lv.(*lua.LUserData); ok {
+				// TODO should fail if wrong type + test.
+				if entry, ok := unwrapMailAddress(ud); ok {
+					to = append(to, entry)
+				}
+			}
+		})
+		m.To = to
+	case "date":
+		m.Date = time.Unix(ls.CheckInt64(3), 0)
+	case "subject":
+		m.Subject = ls.CheckString(3)
+	case "size":
+		m.Size = ls.CheckInt64(3)
+	default:
+		ls.RaiseError("invalid index %q", index)
+	}
+
+	return 0
+}

pkg/extension/luahost/bind_message_test.go

@@ -0,0 +1,87 @@
+package luahost
+
+import (
+	"net/mail"
+	"testing"
+	"time"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	"github.com/inbucket/inbucket/v3/pkg/test"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMessageMetadataGetters(t *testing.T) {
+	want := &event.MessageMetadata{
+		Mailbox: "mb1",
+		ID:      "id1",
+		From:    &mail.Address{Name: "name1", Address: "addr1"},
+		To:      []*mail.Address{{Name: "name2", Address: "addr2"}},
+		Date:    time.Date(2001, time.February, 3, 4, 5, 6, 0, time.UTC),
+		Subject: "subj1",
+		Size:    42,
+	}
+	script := `
+		assert(msg, "msg should not be nil")
+
+		assert_eq(msg.mailbox, "mb1")
+		assert_eq(msg.id, "id1")
+		assert_eq(msg.subject, "subj1")
+		assert_eq(msg.size, 42, "msg.size")
+
+		assert_eq(msg.from.name, "name1", "from.name")
+		assert_eq(msg.from.address, "addr1", "from.address")
+
+		assert_eq(table.getn(msg.to), 1)
+		assert_eq(msg.to[1].name, "name2", "to.name")
+		assert_eq(msg.to[1].address, "addr2", "to.address")
+
+		assert_eq(msg.date, 981173106, "msg.date")
+	`
+
+	ls, _ := test.NewLuaState()
+	registerMessageMetadataType(ls)
+	registerMailAddressType(ls)
+	ls.SetGlobal("msg", wrapMessageMetadata(ls, want))
+	require.NoError(t, ls.DoString(script))
+}
+
+func TestMessageMetadataSetters(t *testing.T) {
+	want := &event.MessageMetadata{
+		Mailbox: "mb1",
+		ID:      "id1",
+		From:    &mail.Address{Name: "name1", Address: "addr1"},
+		To:      []*mail.Address{{Name: "name2", Address: "addr2"}},
+		Date:    time.Date(2001, time.February, 3, 4, 5, 6, 0, time.UTC),
+		Subject: "subj1",
+		Size:    42,
+	}
+	script := `
+		assert(msg, "msg should not be nil")
+
+		msg.mailbox = "mb1"
+		msg.id = "id1"
+		msg.subject = "subj1"
+		msg.size = 42
+
+		msg.from = address.new("name1", "addr1")
+		msg.to = { address.new("name2", "addr2") }
+
+		msg.date = 981173106
+	`
+
+	got := &event.MessageMetadata{}
+	ls, _ := test.NewLuaState()
+	registerMessageMetadataType(ls)
+	registerMailAddressType(ls)
+	ls.SetGlobal("msg", wrapMessageMetadata(ls, got))
+	require.NoError(t, ls.DoString(script))
+
+	// Timezones will cause a naive comparison to fail.
+	assert.Equal(t, want.Date.Unix(), got.Date.Unix())
+	now := time.Now()
+	want.Date = now
+	got.Date = now
+
+	assert.Equal(t, want, got)
+}

pkg/extension/luahost/bind_smtpresponse.go

@@ -0,0 +1,54 @@
+package luahost
+
+import (
+	"fmt"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	lua "github.com/yuin/gopher-lua"
+)
+
+const smtpResponseName = "smtp"
+
+func registerSMTPResponseType(ls *lua.LState) {
+	mt := ls.NewTypeMetatable(smtpResponseName)
+	ls.SetGlobal(smtpResponseName, mt)
+
+	// Static attributes.
+	ls.SetField(mt, "allow", ls.NewFunction(newSMTPResponse(event.ActionAllow)))
+	ls.SetField(mt, "defer", ls.NewFunction(newSMTPResponse(event.ActionDefer)))
+	ls.SetField(mt, "deny", ls.NewFunction(newSMTPResponse(event.ActionDeny)))
+}
+
+func newSMTPResponse(action int) func(*lua.LState) int {
+	return func(ls *lua.LState) int {
+		val := &event.SMTPResponse{Action: action}
+
+		if action == event.ActionDeny {
+			// Optionally accept error code and message.
+			val.ErrorCode = ls.OptInt(1, 550)
+			val.ErrorMsg = ls.OptString(2, "Mail denied by policy")
+		}
+
+		ud := wrapSMTPResponse(ls, val)
+		ls.Push(ud)
+		return 1
+	}
+}
+
+func wrapSMTPResponse(ls *lua.LState, val *event.SMTPResponse) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(smtpResponseName))
+
+	return ud
+}
+
+func unwrapSMTPResponse(lv lua.LValue) (*event.SMTPResponse, error) {
+	if ud, ok := lv.(*lua.LUserData); ok {
+		if v, ok := ud.Value.(*event.SMTPResponse); ok {
+			return v, nil
+		}
+	}
+
+	return nil, fmt.Errorf("expected SMTPResponse, got %q", lv.Type().String())
+}

pkg/extension/luahost/bind_smtpresponse_test.go

@@ -0,0 +1,40 @@
+package luahost
+
+import (
+	"testing"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	"github.com/inbucket/inbucket/v3/pkg/test"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestSMTPResponseConstructors(t *testing.T) {
+	check := func(script string, want event.SMTPResponse) {
+		t.Helper()
+		ls, _ := test.NewLuaState()
+		registerSMTPResponseType(ls)
+		require.NoError(t, ls.DoString(script))
+
+		got, err := unwrapSMTPResponse(ls.Get(-1))
+		require.NoError(t, err)
+		assert.Equal(t, &want, got)
+	}
+
+	check("return smtp.defer()", event.SMTPResponse{Action: event.ActionDefer})
+	check("return smtp.allow()", event.SMTPResponse{Action: event.ActionAllow})
+
+	// Verify deny() has default code & msg.
+	check("return smtp.deny()", event.SMTPResponse{
+		Action:    event.ActionDeny,
+		ErrorCode: 550,
+		ErrorMsg:  "Mail denied by policy",
+	})
+
+	// Verify defaults can be overridden.
+	check("return smtp.deny(123, 'bacon')", event.SMTPResponse{
+		Action:    event.ActionDeny,
+		ErrorCode: 123,
+		ErrorMsg:  "bacon",
+	})
+}

pkg/extension/luahost/bind_smtpsession.go

@@ -0,0 +1,72 @@
+package luahost
+
+import (
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	lua "github.com/yuin/gopher-lua"
+)
+
+const smtpSessionName = "smtp_session"
+
+func registerSMTPSessionType(ls *lua.LState) {
+	mt := ls.NewTypeMetatable(smtpSessionName)
+	ls.SetGlobal(smtpSessionName, mt)
+
+	// Static attributes.
+	ls.SetField(mt, "new", ls.NewFunction(newSMTPSession))
+
+	// Methods.
+	ls.SetField(mt, "__index", ls.NewFunction(smtpSessionIndex))
+}
+
+func newSMTPSession(ls *lua.LState) int {
+	val := &event.SMTPSession{}
+	ud := wrapSMTPSession(ls, val)
+	ls.Push(ud)
+
+	return 1
+}
+
+func wrapSMTPSession(ls *lua.LState, val *event.SMTPSession) *lua.LUserData {
+	ud := ls.NewUserData()
+	ud.Value = val
+	ls.SetMetatable(ud, ls.GetTypeMetatable(smtpSessionName))
+
+	return ud
+}
+
+// Checks there is an SMTPSession at stack position `pos`, else throws Lua error.
+func checkSMTPSession(ls *lua.LState, pos int) *event.SMTPSession {
+	ud := ls.CheckUserData(pos)
+	if v, ok := ud.Value.(*event.SMTPSession); ok {
+		return v
+	}
+	ls.ArgError(pos, smtpSessionName+" expected")
+	return nil
+}
+
+// Gets a field value from SMTPSession user object.  This emulates a Lua table,
+// allowing `msg.subject` instead of a Lua object syntax of `msg:subject()`.
+func smtpSessionIndex(ls *lua.LState) int {
+	session := checkSMTPSession(ls, 1)
+	field := ls.CheckString(2)
+
+	// Push the requested field's value onto the stack.
+	switch field {
+	case "from":
+		ls.Push(wrapMailAddress(ls, session.From))
+	case "to":
+		lt := &lua.LTable{}
+		for _, v := range session.To {
+			addr := v
+			lt.Append(wrapMailAddress(ls, addr))
+		}
+		ls.Push(lt)
+	case "remote_addr":
+		ls.Push(lua.LString(session.RemoteAddr))
+	default:
+		// Unknown field.
+		ls.Push(lua.LNil)
+	}
+
+	return 1
+}

pkg/extension/luahost/bind_smtpsession_test.go

@@ -0,0 +1,41 @@
+package luahost
+
+import (
+	"net/mail"
+	"testing"
+
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	"github.com/inbucket/inbucket/v3/pkg/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestSMTPSessionGetters(t *testing.T) {
+	want := &event.SMTPSession{
+		From: &mail.Address{Name: "name1", Address: "addr1"},
+		To: []*mail.Address{
+			{Name: "name2", Address: "addr2"},
+			{Name: "name3", Address: "addr3"},
+		},
+		RemoteAddr: "1.2.3.4",
+	}
+	script := `
+		assert(session, "session should not be nil")
+
+		assert_eq(session.from.name, "name1", "from.name")
+		assert_eq(session.from.address, "addr1", "from.address")
+
+		assert_eq(#session.to, 2, "#session.to")
+		assert_eq(session.to[1].name, "name2", "to[1].name")
+		assert_eq(session.to[1].address, "addr2", "to[1].address")
+		assert_eq(session.to[2].name, "name3", "to[2].name")
+		assert_eq(session.to[2].address, "addr3", "to[2].address")
+
+		assert_eq(session.remote_addr, "1.2.3.4")
+	`
+
+	ls, _ := test.NewLuaState()
+	registerSMTPSessionType(ls)
+	registerMailAddressType(ls)
+	ls.SetGlobal("session", wrapSMTPSession(ls, want))
+	require.NoError(t, ls.DoString(script))
+}

pkg/extension/luahost/lua.go

@@ -0,0 +1,259 @@
+package luahost
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/inbucket/inbucket/v3/pkg/config"
+	"github.com/inbucket/inbucket/v3/pkg/extension"
+	"github.com/inbucket/inbucket/v3/pkg/extension/event"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	lua "github.com/yuin/gopher-lua"
+	"github.com/yuin/gopher-lua/parse"
+)
+
+// ErrNoScript signals that the Lua script file was not present.
+var ErrNoScript error = errors.New("no script file present")
+
+// Host of Lua extensions.
+type Host struct {
+	extHost    *extension.Host
+	pool       *statePool
+	logContext zerolog.Context
+}
+
+// New constructs a new Lua Host, pre-compiling the source.
+func New(conf config.Lua, extHost *extension.Host) (*Host, error) {
+	scriptPath := conf.Path
+	if scriptPath == "" {
+		return nil, nil
+	}
+
+	logContext := log.With().Str("module", "lua")
+	logger := logContext.Str("phase", "startup").Str("path", scriptPath).Logger()
+
+	// Pre-load, parse, and compile script.
+	if fi, err := os.Stat(scriptPath); err != nil {
+		logger.Info().Msg("Lua script file not found (this is not an error)")
+		return nil, ErrNoScript
+	} else if fi.IsDir() {
+		return nil, fmt.Errorf("lua script %v is a directory", scriptPath)
+	}
+
+	logger.Info().Msg("Loading script")
+	file, err := os.Open(scriptPath)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	return NewFromReader(logContext.Logger(), extHost, bufio.NewReader(file), scriptPath)
+}
+
+// NewFromReader constructs a new Lua Host, loading Lua source from the provided reader.
+// The provided path is used in logging and error messages.
+func NewFromReader(logger zerolog.Logger, extHost *extension.Host, r io.Reader, path string) (*Host, error) {
+	startLogger := logger.With().Str("phase", "startup").Str("path", path).Logger()
+
+	// Pre-parse, and compile script.
+	chunk, err := parse.Parse(r, path)
+	if err != nil {
+		return nil, err
+	}
+	proto, err := lua.Compile(chunk, path)
+	if err != nil {
+		return nil, err
+	}
+
+	// Build the pool and confirm LState is retrievable.
+	pool := newStatePool(logger, proto)
+	h := &Host{extHost: extHost, pool: pool, logContext: logger.With()}
+	if ls, err := pool.getState(); err == nil {
+		h.wireFunctions(startLogger, ls)
+
+		// State creation works, put it back.
+		pool.putState(ls)
+	} else {
+		return nil, err
+	}
+
+	return h, nil
+}
+
+// CreateChannel creates a channel and places it into the named global variable
+// in newly created LStates.
+func (h *Host) CreateChannel(name string) chan lua.LValue {
+	return h.pool.createChannel(name)
+}
+
+// Detects global lua event listener functions and wires them up.
+func (h *Host) wireFunctions(logger zerolog.Logger, ls *lua.LState) {
+	ib, err := getInbucket(ls)
+	if err != nil {
+		logger.Fatal().Err(err).Msg("Failed to get inbucket global")
+	}
+
+	events := h.extHost.Events
+	const listenerName string = "lua"
+
+	if ib.After.MessageDeleted != nil {
+		events.AfterMessageDeleted.AddListener(listenerName, h.handleAfterMessageDeleted)
+	}
+	if ib.After.MessageStored != nil {
+		events.AfterMessageStored.AddListener(listenerName, h.handleAfterMessageStored)
+	}
+	if ib.Before.MailFromAccepted != nil {
+		events.BeforeMailFromAccepted.AddListener(listenerName, h.handleBeforeMailFromAccepted)
+	}
+	if ib.Before.MessageStored != nil {
+		events.BeforeMessageStored.AddListener(listenerName, h.handleBeforeMessageStored)
+	}
+	if ib.Before.RcptToAccepted != nil {
+		events.BeforeRcptToAccepted.AddListener(listenerName, h.handleBeforeRcptToAccepted)
+	}
+}
+
+func (h *Host) handleAfterMessageDeleted(msg event.MessageMetadata) {
+	logger, ls, ib, ok := h.prepareInbucketFuncCall("after.message_deleted")
+	if !ok {
+		return
+	}
+	defer h.pool.putState(ls)
+
+	// Call lua function.
+	logger.Debug().Msgf("Calling Lua function with %+v", msg)
+	if err := ls.CallByParam(
+		lua.P{Fn: ib.After.MessageDeleted, NRet: 0, Protect: true},
+		wrapMessageMetadata(ls, &msg),
+	); err != nil {
+		logger.Error().Err(err).Msg("Failed to call Lua function")
+	}
+}
+
+func (h *Host) handleAfterMessageStored(msg event.MessageMetadata) {
+	logger, ls, ib, ok := h.prepareInbucketFuncCall("after.message_stored")
+	if !ok {
+		return
+	}
+	defer h.pool.putState(ls)
+
+	// Call lua function.
+	logger.Debug().Msgf("Calling Lua function with %+v", msg)
+	if err := ls.CallByParam(
+		lua.P{Fn: ib.After.MessageStored, NRet: 0, Protect: true},
+		wrapMessageMetadata(ls, &msg),
+	); err != nil {
+		logger.Error().Err(err).Msg("Failed to call Lua function")
+	}
+}
+
+func (h *Host) handleBeforeMailFromAccepted(session event.SMTPSession) *event.SMTPResponse {
+	logger, ls, ib, ok := h.prepareInbucketFuncCall("before.mail_from_accepted")
+	if !ok {
+		return nil
+	}
+	defer h.pool.putState(ls)
+
+	logger.Debug().Msgf("Calling Lua function with %+v", session)
+	if err := ls.CallByParam(
+		lua.P{Fn: ib.Before.MailFromAccepted, NRet: 1, Protect: true},
+		wrapSMTPSession(ls, &session),
+	); err != nil {
+		logger.Error().Err(err).Msg("Failed to call Lua function")
+		return nil
+	}
+
+	lval := ls.Get(-1)
+	ls.Pop(1)
+	logger.Debug().Msgf("Lua function returned %q (%v)", lval, lval.Type().String())
+
+	result, err := unwrapSMTPResponse(lval)
+	if err != nil {
+		logger.Error().Err(err).Msg("Bad response from Lua Function")
+	}
+
+	return result
+}
+
+func (h *Host) handleBeforeRcptToAccepted(session event.SMTPSession) *event.SMTPResponse {
+	logger, ls, ib, ok := h.prepareInbucketFuncCall("before.rcpt_to_accepted")
+	if !ok {
+		return nil
+	}
+	defer h.pool.putState(ls)
+
+	logger.Debug().Msgf("Calling Lua function with %+v", session)
+	if err := ls.CallByParam(
+		lua.P{Fn: ib.Before.RcptToAccepted, NRet: 1, Protect: true},
+		wrapSMTPSession(ls, &session),
+	); err != nil {
+		logger.Error().Err(err).Msg("Failed to call Lua function")
+		return nil
+	}
+
+	lval := ls.Get(-1)
+	ls.Pop(1)
+	logger.Debug().Msgf("Lua function returned %q (%v)", lval, lval.Type().String())
+
+	result, err := unwrapSMTPResponse(lval)
+	if err != nil {
+		logger.Error().Err(err).Msg("Bad response from Lua Function")
+	}
+
+	return result
+}
+
+func (h *Host) handleBeforeMessageStored(msg event.InboundMessage) *event.InboundMessage {
+	logger, ls, ib, ok := h.prepareInbucketFuncCall("before.message_stored")
+	if !ok {
+		return nil
+	}
+	defer h.pool.putState(ls)
+
+	logger.Debug().Msgf("Calling Lua function with %+v", msg)
+	if err := ls.CallByParam(
+		lua.P{Fn: ib.Before.MessageStored, NRet: 1, Protect: true},
+		wrapInboundMessage(ls, &msg),
+	); err != nil {
+		logger.Error().Err(err).Msg("Failed to call Lua function")
+		return nil
+	}
+
+	lval := ls.Get(-1)
+	ls.Pop(1)
+	logger.Debug().Msgf("Lua function returned %q (%v)", lval, lval.Type().String())
+
+	if lua.LVIsFalse(lval) {
+		return nil
+	}
+
+	result, err := unwrapInboundMessage(lval)
+	if err != nil {
+		logger.Error().Err(err).Msg("Bad response from Lua Function")
+	}
+
+	return result
+}
+
+// Common preparation for calling Lua functions.
+func (h *Host) prepareInbucketFuncCall(funcName string) (logger zerolog.Logger, ls *lua.LState, ib *Inbucket, ok bool) {
+	logger = h.logContext.Str("event", funcName).Logger()
+
+	ls, err := h.pool.getState()
+	if err != nil {
+		logger.Error().Err(err).Msg("Failed to get Lua state instance from pool")
+		return logger, nil, nil, false
+	}
+
+	ib, err = getInbucket(ls)
+	if err != nil {
+		logger.Error().Err(err).Msg("Failed to obtain Lua inbucket object")
+		return logger, nil, nil, false
+	}
+
+	return logger, ls, ib, true
+}