From 51da3506a296b7d5d4185b17364f188292136888 Mon Sep 17 00:00:00 2001
From: Sebastien Douheret <sebastien.douheret@iot.bzh>
Date: Wed, 17 May 2017 16:08:03 +0200
Subject: [PATCH] Use autogenerated Synchting apikey.

Except if gui-apikey is set in config.json file.

Signed-off-by: Sebastien Douheret <sebastien.douheret@iot.bzh>
---
 README.md                   |  3 ++-
 lib/syncthing/st.go         | 27 ++++++++++++++++++++++++---
 lib/xdsconfig/fileconfig.go |  7 ++++---
 3 files changed, 30 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index 7b60cdc..b910e06 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,8 @@ Supported fields in configuration file are:
     "syncthing": {
         "binDir": "syncthing binaries directory (default: executable directory)",
         "home": "syncthing home directory (usually .../syncthing-config)",
-        "gui-address": "syncthing gui url (default http://localhost:8384)"
+        "gui-address": "syncthing gui url (default http://localhost:8384)",
+        "gui-apikey": "syncthing api-key to use (default auto-generated)"
     }
 }
 ```
diff --git a/lib/syncthing/st.go b/lib/syncthing/st.go
index 9452fbd..841901d 100644
--- a/lib/syncthing/st.go
+++ b/lib/syncthing/st.go
@@ -15,6 +15,10 @@ import (
 
 	"io"
 
+	"io/ioutil"
+
+	"regexp"
+
 	"github.com/Sirupsen/logrus"
 	"github.com/iotbzh/xds-server/lib/common"
 	"github.com/iotbzh/xds-server/lib/xdsconfig"
@@ -172,27 +176,44 @@ func (s *SyncThing) Start() (*exec.Cmd, error) {
 
 	s.STCmd, err = s.startProc("syncthing", args, env, &s.exitSTChan)
 
+	// Use autogenerated apikey if not set by config.json
+	if s.APIKey == "" {
+		if fd, err := os.Open(filepath.Join(s.Home, "config.xml")); err == nil {
+			defer fd.Close()
+			if b, err := ioutil.ReadAll(fd); err == nil {
+				re := regexp.MustCompile("<apikey>(.*)</apikey>")
+				key := re.FindStringSubmatch(string(b))
+				if len(key) >= 1 {
+					s.APIKey = key[1]
+				}
+			}
+		}
+	}
+
 	return s.STCmd, err
 }
 
 // StartInotify Starts syncthing-inotify process
 func (s *SyncThing) StartInotify() (*exec.Cmd, error) {
 	var err error
+	exeName := "syncthing-inotify"
 
-	s.log.Infof(" STI home=%s", s.Home)
 	s.log.Infof(" STI  url=%s", s.BaseURL)
 
 	args := []string{
-		"--home=" + s.Home,
 		"-target=" + s.BaseURL,
 	}
+	if s.APIKey != "" {
+		args = append(args, "-api="+s.APIKey)
+		s.log.Infof("%s uses apikey=%s", exeName, s.APIKey)
+	}
 	if s.log.Level == logrus.DebugLevel {
 		args = append(args, "-verbosity=4")
 	}
 
 	env := []string{}
 
-	s.STICmd, err = s.startProc("syncthing-inotify", args, env, &s.exitSTIChan)
+	s.STICmd, err = s.startProc(exeName, args, env, &s.exitSTIChan)
 
 	return s.STICmd, err
 }
diff --git a/lib/xdsconfig/fileconfig.go b/lib/xdsconfig/fileconfig.go
index 776eb78..d39cae0 100644
--- a/lib/xdsconfig/fileconfig.go
+++ b/lib/xdsconfig/fileconfig.go
@@ -23,7 +23,7 @@ type SyncThingConf struct {
 type FileConfig struct {
 	WebAppDir    string         `json:"webAppDir"`
 	ShareRootDir string         `json:"shareRootDir"`
-	SdkRootDir   string        `json:"sdkRootDir"`
+	SdkRootDir   string         `json:"sdkRootDir"`
 	HTTPPort     string         `json:"httpPort"`
 	SThgConf     *SyncThingConf `json:"syncthing"`
 	LogsDir      string         `json:"logsDir"`
@@ -86,7 +86,8 @@ func updateConfigFromFile(c *Config, confFile string) error {
 		&fCfg.ShareRootDir,
 		&fCfg.SdkRootDir,
 		&fCfg.LogsDir,
-		&fCfg.SThgConf.Home} {
+		&fCfg.SThgConf.Home,
+		&fCfg.SThgConf.BinDir} {
 
 		rep, err := resolveEnvVar(*field)
 		if err != nil {
@@ -94,7 +95,7 @@ func updateConfigFromFile(c *Config, confFile string) error {
 		}
 		*field = path.Clean(rep)
 	}
-	
+
 	// Config file settings overwrite default config
 
 	if fCfg.WebAppDir != "" {
-- 
2.16.6