Add rudimentary support for specifying redirects.

config.go

@@ -12,6 +12,7 @@ type Config struct {
 	DocBase            string
 	HomeDocBase        string
 	LogPath            string
+	Redirects          map[string]string
 	CGIPath            string
 	SCGIPaths          map[string]string
 }
@@ -28,6 +29,7 @@ func getConfig(filename string) (Config, error) {
 	config.DocBase = "/var/gemini/"
 	config.HomeDocBase = "users"
 	config.LogPath = "molly.log"
+	config.Redirects = make(map[string]string)
 	config.CGIPath = "^/var/gemini/cgi-bin/"
 	config.SCGIPaths = make(map[string]string)
 

handler.go

@@ -72,6 +72,16 @@ func handleGeminiRequest(conn net.Conn, config Config, logEntries chan LogEntry)
 		return
 	}
 
+	// Check for redirects
+	for src, dst := range config.Redirects {
+		if URL.Path == src {
+			URL.Path = dst
+			conn.Write([]byte("30 " + URL.String() + "\r\n"))
+			log.Status = 30
+			return
+		}
+	}
+
 	// Check whether this URL is mapped to an SCGI app
 	for scgi_url, scgi_socket := range config.SCGIPaths {
 	    matched, err := regexp.Match(scgi_url, []byte(URL.Path))