From dd3ccec6969b877b66e20377c729f6d633245d8a Mon Sep 17 00:00:00 2001
From: Henrique Dias <hacdias@gmail.com>
Date: Wed, 26 Jul 2017 10:01:06 +0100
Subject: [PATCH] Random port after all #152

---
 README.md               |  8 +++++---
 cmd/filemanager/main.go | 14 +++++++++++---
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 6c1017de..e075313f 100644
--- a/README.md
+++ b/README.md
@@ -53,11 +53,13 @@ You can either use flags or a JSON configuration file, which should have the fol
 }
 ```
 
-The `scope`, `allowCommands`, `allowEdit`, `allowNew` and `commands` options are the defaults for new users. To set a configuration file, you will need to pass the path with a flag, like this: `filemanager --config=/path/to/config.json`. 
+The `scope`, `allowCommands`, `allowEdit`, `allowNew` and `commands` options are the defaults for new users. To set a configuration file, you will need to pass the path with a flag, like this: `filemanager --config=/path/to/config.json`.
 
 Otherwise, you may not want to use a configuration file, which can be done using the following flags:
 
 ```
+-address string
+      Address to listen to (default is all of them)
 -allow-commands
       Default allow commands option (default true)
 -allow-edit
@@ -69,9 +71,9 @@ Otherwise, you may not want to use a configuration file, which can be done using
 -database string
       Database path (default "./filemanager.db")
 -port string
-      HTTP Port (default "80")
+      HTTP Port (default is random)
 -scope string
-      Defualt scope for new users (default ".")
+      Default scope for new users (default ".")
 ```
 
 # Features
diff --git a/cmd/filemanager/main.go b/cmd/filemanager/main.go
index fc644bfb..2f141fdf 100644
--- a/cmd/filemanager/main.go
+++ b/cmd/filemanager/main.go
@@ -5,6 +5,7 @@ import (
 	"flag"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"strconv"
 	"strings"
@@ -27,6 +28,7 @@ type confFile struct {
 }
 
 var (
+	addr          string
 	config        string
 	database      string
 	scope         string
@@ -39,7 +41,8 @@ var (
 
 func init() {
 	flag.StringVar(&config, "config", "", "JSON configuration file")
-	flag.StringVar(&port, "port", "8080", "HTTP Port")
+	flag.StringVar(&port, "port", "0", "HTTP Port (default is random)")
+	flag.StringVar(&addr, "address", "", "Address to listen to (default is all of them)")
 	flag.StringVar(&database, "database", "./filemanager.db", "Database path")
 	flag.StringVar(&scope, "scope", ".", "Default scope for new users")
 	flag.StringVar(&commands, "commands", "git svn hg", "Space separated commands available for new users")
@@ -72,8 +75,13 @@ func main() {
 	fm.SetBaseURL("/")
 	fm.SetPrefixURL("/")
 
-	fmt.Println("Starting filemanager on *:" + port)
-	if err := http.ListenAndServe(":"+port, fm); err != nil {
+	listener, err := net.Listen("tcp", addr+":"+port)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("Listening on", listener.Addr().String())
+	if err := http.Serve(listener, fm); err != nil {
 		panic(err)
 	}
 }