Auto-format protobuf files

This patch runs clang-format on the protobuf files, and also adds a
Makefile target for auto-formatting code (Go and protobuf) for
convenience.

.clang-format

@@ -0,0 +1,4 @@
+Language: Proto
+BasedOnStyle: Google
+IndentWidth: 8
+UseTab: AlignWithSpaces

.gitignore

@@ -6,6 +6,7 @@
 # Exceptions to the rules above: files we care about that would otherwise be
 # excluded.
 !.gitignore
+!.clang-format
 !.github/
 
 # The binaries.

Makefile

@@ -55,6 +55,11 @@ install-config-skeleton:
 		chown -v mail:mail /var/lib/chasquid ; \
 	fi
 
+fmt:
+	go vet ./...
+	gofmt -s -w .
+	clang-format -i $(shell find . -iname '*.proto')
 
 .PHONY: chasquid test \
-	chasquid-util smtp-check mda-lmtp dovecot-auth-cli
+	chasquid-util smtp-check mda-lmtp dovecot-auth-cli \
+	fmt

internal/config/config.proto

@@ -28,7 +28,8 @@ message Config {
 
 	// Addresses to listen on for submission-over-TLS (usually port 465).
 	// Default: "systemd", which means systemd passes sockets to us.
-	// systemd sockets must be named with "FileDescriptorName=submission_tls".
+	// systemd sockets must be named with
+	// "FileDescriptorName=submission_tls".
 	repeated string submission_over_tls_address = 5;
 
 	// Address for the monitoring http server.
@@ -37,9 +38,9 @@ message Config {
 	string monitoring_address = 6;
 
 	// Mail delivery agent (MDA, also known as LDA) to use.
-	// This should point to the binary to use to deliver email to local users.
-	// The content of the email will be passed via stdin.
-	// If it exits unsuccessfully, we assume the mail was not delivered.
+	// This should point to the binary to use to deliver email to local
+	// users. The content of the email will be passed via stdin. If it exits
+	// unsuccessfully, we assume the mail was not delivered.
 	// Default: "maildrop".
 	string mail_delivery_agent_bin = 7;
 

internal/queue/queue.proto

@@ -49,10 +49,9 @@ message Recipient {
 // We used to use the well-known type, but the dependency makes packaging much
 // more convoluted and adds very little value, so we now just include it here.
 message Timestamp {
-  // Represents seconds of UTC time since Unix epoch.
-  int64 seconds = 1;
+	// Represents seconds of UTC time since Unix epoch.
+	int64 seconds = 1;
 
-  // Non-negative fractions of a second at nanosecond resolution.
-  int32 nanos = 2;
+	// Non-negative fractions of a second at nanosecond resolution.
+	int32 nanos = 2;
 }
-