From 3751caa9a5d2a7a3669d089912e1504bafd6cf3f Mon Sep 17 00:00:00 2001
From: teru <teru@kteru.net>
Date: Sun, 14 Aug 2016 13:03:32 +0900
Subject: [PATCH] Implement to generate configuration for postfix/dovecot #6

---
 cmd/mailfull/command/genconfig.go |  67 ++++++++++++++
 cmd/mailfull/main.go              |   4 +
 generateconfig.go                 | 140 ++++++++++++++++++++++++++++++
 3 files changed, 211 insertions(+)
 create mode 100644 cmd/mailfull/command/genconfig.go
 create mode 100644 generateconfig.go

diff --git a/cmd/mailfull/command/genconfig.go b/cmd/mailfull/command/genconfig.go
new file mode 100644
index 0000000..e2a4b27
--- /dev/null
+++ b/cmd/mailfull/command/genconfig.go
@@ -0,0 +1,67 @@
+package command
+
+import (
+	"fmt"
+
+	"github.com/directorz/mailfull-go"
+)
+
+// GenConfigCommand represents a GenConfigCommand.
+type GenConfigCommand struct {
+	Meta
+}
+
+// Synopsis returns a one-line synopsis.
+func (c *GenConfigCommand) Synopsis() string {
+	return "Write a Postfix or Dovecot configuration to stdout."
+}
+
+// Help returns long-form help text.
+func (c *GenConfigCommand) Help() string {
+	txt := fmt.Sprintf(`
+Usage:
+    %s %s name
+
+Description:
+    %s
+
+Required Args:
+    name
+        The software name that you want to generate a configuration.
+        Available names are "postfix" and "dovecot".
+`,
+		c.CmdName, c.SubCmdName,
+		c.Synopsis())
+
+	return txt[1:]
+}
+
+// Run runs the command and returns the exit status.
+func (c *GenConfigCommand) Run(args []string) int {
+	if len(args) != 1 {
+		fmt.Fprintf(c.UI.ErrorWriter, "%v\n", c.Help())
+		return 1
+	}
+
+	softwareName := args[0]
+
+	repo, err := mailfull.OpenRepository(".")
+	if err != nil {
+		fmt.Fprintf(c.UI.ErrorWriter, "[ERR] %v\n", err)
+		return 1
+	}
+
+	switch softwareName {
+	case "postfix":
+		fmt.Fprintf(c.UI.Writer, "%s", repo.GenerateConfigPostfix())
+
+	case "dovecot":
+		fmt.Fprintf(c.UI.Writer, "%s", repo.GenerateConfigDovecot())
+
+	default:
+		fmt.Fprintf(c.UI.ErrorWriter, "[ERR] Specify \"postfix\" or \"dovecot\".\n")
+		return 1
+	}
+
+	return 0
+}
diff --git a/cmd/mailfull/main.go b/cmd/mailfull/main.go
index a0fd7a2..86c3d9a 100644
--- a/cmd/mailfull/main.go
+++ b/cmd/mailfull/main.go
@@ -43,6 +43,10 @@ func main() {
 			meta.SubCmdName = c.Subcommand()
 			return &command.InitCommand{Meta: meta}, nil
 		},
+		"genconfig": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &command.GenConfigCommand{Meta: meta}, nil
+		},
 		"domains": func() (cli.Command, error) {
 			meta.SubCmdName = c.Subcommand()
 			return &command.DomainsCommand{Meta: meta}, nil
diff --git a/generateconfig.go b/generateconfig.go
new file mode 100644
index 0000000..a2cc75f
--- /dev/null
+++ b/generateconfig.go
@@ -0,0 +1,140 @@
+package mailfull
+
+import (
+	"fmt"
+	"path/filepath"
+	"time"
+)
+
+// GenerateConfigPostfix generate a configuration for Postfix.
+func (r *Repository) GenerateConfigPostfix() string {
+	cfg := fmt.Sprintf(`
+#
+# Sample configuration: main.cf
+# Generated by mailfull %s on %s
+#
+
+#myhostname = host.example.com
+mydomain = $myhostname
+myorigin = $mydomain
+
+inet_interfaces = all
+mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
+mynetworks_style = host
+recipient_delimiter = -
+message_size_limit = 10240000
+mailbox_size_limit = 51200000
+virtual_mailbox_limit = 51200000
+
+virtual_mailbox_domains = hash:%s
+virtual_mailbox_base = %s
+virtual_mailbox_maps = hash:%s
+virtual_uid_maps = static:%d
+virtual_gid_maps = static:%d
+virtual_alias_maps = hash:%s
+transport_maps = regexp:%s
+alias_maps = hash:/etc/aliases, hash:%s
+alias_database = hash:/etc/aliases, hash:%s
+
+smtpd_sasl_auth_enable = yes
+smtpd_sasl_local_domain = $myhostname
+smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
+smtpd_sasl_type = dovecot
+smtpd_sasl_path = private/auth
+
+smtpd_tls_cert_file = /etc/pki/dovecot/certs/dovecot.pem
+smtpd_tls_key_file = /etc/pki/dovecot/private/dovecot.pem
+#smtpd_tls_CAfile =
+smtpd_tls_session_cache_database = btree:/etc/postfix/smtpd_scache
+smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
+
+smtp_tls_security_level = may
+smtp_tls_loglevel = 1
+smtpd_tls_security_level = may
+smtpd_tls_loglevel = 1
+`,
+		Version, time.Now().Format(time.RFC3339),
+		filepath.Join(r.DirDatabasePath, FileNameDbDomains),
+		r.DirMailDataPath,
+		filepath.Join(r.DirDatabasePath, FileNameDbMaildirs),
+		r.uid,
+		r.gid,
+		filepath.Join(r.DirDatabasePath, FileNameDbDestinations),
+		filepath.Join(r.DirDatabasePath, FileNameDbLocaltable),
+		filepath.Join(r.DirDatabasePath, FileNameDbForwards),
+		filepath.Join(r.DirDatabasePath, FileNameDbForwards),
+	)
+
+	return cfg[1:]
+}
+
+// GenerateConfigDovecot generate a configuration for Dovecot.
+func (r *Repository) GenerateConfigDovecot() string {
+	cfg := fmt.Sprintf(`
+#
+# Sample configuration: dovecot.conf
+# Generated by mailfull %s on %s
+#
+
+protocols = imap pop3
+auth_mechanisms = plain login
+mail_location = maildir:~/Maildir
+
+ssl = yes
+ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
+ssl_key = </etc/pki/dovecot/private/dovecot.pem
+#ssl_ca =
+
+disable_plaintext_auth = yes
+
+service imap-login {
+  inet_listener imap {
+    port = 143
+  }
+  inet_listener imaps {
+    port = 993
+    ssl = yes
+  }
+}
+
+service pop3-login {
+  inet_listener pop3 {
+    port = 110
+  }
+  inet_listener pop3s {
+    port = 995
+    ssl = yes
+  }
+}
+
+service auth {
+  unix_listener /var/spool/postfix/private/auth {
+    mode = 0666
+    user = postfix
+    group = postfix
+  }
+}
+
+passdb {
+  driver = passwd-file
+  args = %s
+}
+userdb {
+  driver = static
+  args = uid=%d gid=%d home=%s/%%d/%%n
+}
+
+passdb {
+  driver = pam
+}
+userdb {
+  driver = passwd
+}
+`,
+		Version, time.Now().Format(time.RFC3339),
+		filepath.Join(r.DirDatabasePath, FileNameDbPasswords),
+		r.uid, r.gid, r.DirMailDataPath,
+	)
+
+	return cfg[1:]
+}