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Allow configuring GUI options from command line and environment (fixes #505, closes #507)

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This commit is contained in:
Audrius Butkevicius 2014-08-15 23:24:24 +01:00
parent 3a01eaa4a6
commit 8803bac708
1 changed files with 75 additions and 7 deletions
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82
cmd/syncthing/main.go
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@ -26,6 +26,7 @@ import (
"strings"
"time"
"code.google.com/p/go.crypto/bcrypt"
"github.com/juju/ratelimit"
"github.com/syncthing/syncthing/config"
"github.com/syncthing/syncthing/discover"
@ -102,6 +103,15 @@ show time only (2).
The following enviroment variables are interpreted by syncthing:
STGUIADDRESS Override GUI listen address set in config. Expects protocol type
followed by hostname or an IP address, followed by a port, such
as "https://127.0.0.1:8888".
STGUIAUTH Override GUI authentication credentials set in config. Expects
a colon separated username and password, such as "admin:secret".
STGUIAPIKEY Override GUI API key set in config.
STNORESTART Do not attempt to restart when requested to, instead just exit.
Set this variable when running under a service manager such as
runit, launchd, etc.
@ -144,16 +154,22 @@ func main() {
var showVersion bool
var doUpgrade bool
var doUpgradeCheck bool
var generateDir string
var noBrowser bool
var generateDir string
var guiAddress string
var guiAuthentication string
var guiAPIKey string
flag.StringVar(&confDir, "home", getDefaultConfDir(), "Set configuration directory")
flag.BoolVar(&reset, "reset", false, "Prepare to resync from cluster")
flag.BoolVar(&showVersion, "version", false, "Show version")
flag.BoolVar(&doUpgrade, "upgrade", false, "Perform upgrade")
flag.BoolVar(&doUpgradeCheck, "upgrade-check", false, "Check for available upgrade")
flag.BoolVar(&noBrowser, "no-browser", false, "Do not start browser")
flag.IntVar(&logFlags, "logflags", logFlags, "Set log flags")
flag.StringVar(&generateDir, "generate", "", "Generate key in specified dir")
flag.StringVar(&guiAddress, "gui-address", "", "Override GUI address")
flag.StringVar(&guiAuthentication, "gui-authentication", "", "Override GUI authentication. Expects 'username:password'")
flag.StringVar(&guiAPIKey, "gui-apikey", "", "Override GUI API key")
flag.IntVar(&logFlags, "logflags", logFlags, "Set log flags")
flag.Usage = usageFor(flag.CommandLine, usage, extraUsage)
flag.Parse()
@ -410,10 +426,13 @@ nextRepo:
}
// GUI
if cfg.GUI.Enabled && cfg.GUI.Address != "" {
addr, err := net.ResolveTCPAddr("tcp", cfg.GUI.Address)
guiCfg := overrideGUIConfig(cfg.GUI, guiAddress, guiAuthentication, guiAPIKey)
if guiCfg.Enabled && guiCfg.Address != "" {
addr, err := net.ResolveTCPAddr("tcp", guiCfg.Address)
if err != nil {
l.Fatalf("Cannot start GUI on %q: %v", cfg.GUI.Address, err)
l.Fatalf("Cannot start GUI on %q: %v", guiCfg.Address, err)
} else {
var hostOpen, hostShow string
switch {
@ -429,12 +448,12 @@ nextRepo:
}
var proto = "http"
if cfg.GUI.UseTLS {
if guiCfg.UseTLS {
proto = "https"
}
l.Infof("Starting web GUI on %s://%s:%d/", proto, hostShow, addr.Port)
err := startGUI(cfg.GUI, os.Getenv("STGUIASSETS"), m)
err := startGUI(guiCfg, os.Getenv("STGUIASSETS"), m)
if err != nil {
l.Fatalln("Cannot start GUI:", err)
}
@ -1095,3 +1114,52 @@ func getLockPort() (int, error) {
addr := lockConn.Addr().(*net.TCPAddr)
return addr.Port, nil
}
func overrideGUIConfig(originalCfg config.GUIConfiguration, address, authentication, apikey string) config.GUIConfiguration {
// Make a copy of the config
cfg := originalCfg
if address == "" {
address = os.Getenv("STGUIADDRESS")
}
if address != "" {
cfg.Enabled = true
addressParts := strings.SplitN(address, "://", 2)
switch addressParts[0] {
case "http":
cfg.UseTLS = false
case "https":
cfg.UseTLS = true
default:
l.Fatalln("Unidentified protocol", addressParts[0])
}
cfg.Address = addressParts[1]
}
if authentication == "" {
authentication = os.Getenv("STGUIAUTH")
}
if authentication != "" {
authenticationParts := strings.SplitN(authentication, ":", 2)
hash, err := bcrypt.GenerateFromPassword([]byte(authenticationParts[1]), 0)
if err != nil {
l.Fatalln("Invalid GUI password:", err)
}
cfg.User = authenticationParts[0]
cfg.Password = string(hash)
}
if apikey == "" {
apikey = os.Getenv("STGUIAPIKEY")
}
if apikey != "" {
cfg.APIKey = apikey
}
return cfg
}