From d49388e2eb90b954e8cccb68c59d8fd8a55bf7a3 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Sat, 5 Sep 2015 20:28:16 -0600
Subject: tidy up hackers_git

---
 src/nshd/hackers_git/hackers_parse.go |  4 +-
 src/nshd/hackers_git/hackers_watch.go | 86 ++++++++++++++---------------------
 2 files changed, 37 insertions(+), 53 deletions(-)

(limited to 'src')

diff --git a/src/nshd/hackers_git/hackers_parse.go b/src/nshd/hackers_git/hackers_parse.go
index a9a03f3..858347e 100644
--- a/src/nshd/hackers_git/hackers_parse.go
+++ b/src/nshd/hackers_git/hackers_parse.go
@@ -26,7 +26,7 @@ func filename2uid(filename string) int32 {
 
 var usersGid = name2gid("users")
 
-func load_user_yaml(filename string) (ret user, err error) {
+func parse_user_yaml(filename string) (ret user, err error) {
 	ret.passwd.UID = filename2uid(filename)
 
 	if ret.passwd.UID < 0 {
@@ -107,7 +107,7 @@ func load_user_yaml(filename string) (ret user, err error) {
 	return
 }
 
-func load_user_password(filename string) (hash string) {
+func parse_user_password(filename string) (hash string) {
 	hash = "!"
 	file, err := os.Open(filename)
 	if err != nil {
diff --git a/src/nshd/hackers_git/hackers_watch.go b/src/nshd/hackers_git/hackers_watch.go
index b273741..afae203 100644
--- a/src/nshd/hackers_git/hackers_watch.go
+++ b/src/nshd/hackers_git/hackers_watch.go
@@ -31,9 +31,7 @@ func (o *Hackers) watchHomedir(uid int32) {
 		delete(o.in_uid2wd, uid)
 		logger.Debug("hackers.git: %v", err)
 	}
-	user := o.users[uid]
-	user.passwd.PwHash = load_user_password(user.passwd.HomeDir + "/.password")
-	o.users[uid] = user
+	o.load_user_password(uid)
 }
 
 func (o *Hackers) unwatchHomedir(wd inotify.Wd) {
@@ -45,9 +43,7 @@ func (o *Hackers) unwatchHomedir(wd inotify.Wd) {
 	uid := o.in_wd2uid[wd]
 	delete(o.in_wd2uid, wd)
 	delete(o.in_uid2wd, uid)
-	user := o.users[uid]
-	user.passwd.PwHash = load_user_password(user.passwd.HomeDir + "/.password")
-	o.users[uid] = user
+	o.load_user_password(uid)
 }
 
 func (o *Hackers) close() {
@@ -72,38 +68,41 @@ func (o *Hackers) reload() (err error) {
 	o.in_uid2wd = make(map[int32]inotify.Wd, len(filenames))
 	o.in_wd2uid = make(map[inotify.Wd]int32, len(filenames))
 	for _, filename := range filenames {
-		logger.Debug("hackers.git: Loading yaml file: %s", filename)
-		user, err := load_user_yaml(filename)
-		if err == nil {
-			o.users[user.passwd.UID] = user
-			logger.Debug("hackers.git: ... success")
-			o.watchHomedir(user.passwd.UID)
-		} else {
-			logger.Debug("hackers.git: ... error: %v", err)
-		}
+		o.load_yaml_file(filename)
 	}
 
 	err = nil
 	return
 }
 
-func (o *Hackers) worker_handle_user_add(user user) {
-	o.lock.Lock()
-	defer o.lock.Unlock()
-
-	o.users[user.passwd.UID] = user
-	o.watchHomedir(user.passwd.UID)
+func (o *Hackers) load_yaml_file(filename string) {
+	logger.Debug("hackers.git: Loading yaml file: %s", filename)
+	user, err := parse_user_yaml(filename)
+	if err == nil {
+		// User added/updated
+		logger.Debug("hackers.git: ... success")
+		o.lock.Lock()
+		defer o.lock.Unlock()
+		o.users[user.passwd.UID] = user
+		o.watchHomedir(user.passwd.UID)
+	} else if user.passwd.UID >= 0 {
+		// User became invalid
+		logger.Debug("hackers.git: ... error: %v", err)
+		uid := user.passwd.UID
+		o.lock.Lock()
+		defer o.lock.Unlock()
+		wd, found := o.in_uid2wd[uid]
+		if found {
+			o.unwatchHomedir(wd)
+		}
+		delete(o.users, uid)
+	}
 }
 
-func (o *Hackers) worker_handle_user_del(uid int32) {
-	o.lock.Lock()
-	defer o.lock.Unlock()
-
-	wd, found := o.in_uid2wd[uid]
-	if found {
-		o.unwatchHomedir(wd)
-	}
-	delete(o.users, uid)
+func (o *Hackers) load_user_password(uid int32) {
+	user := o.users[uid]
+	user.passwd.PwHash = parse_user_password(user.passwd.HomeDir + "/.password")
+	o.users[uid] = user
 }
 
 func (o *Hackers) worker_watch_homedirs() {
@@ -112,15 +111,6 @@ func (o *Hackers) worker_watch_homedirs() {
 	}
 }
 
-func (o *Hackers) worker_handle_passwd(uid int32) {
-	o.lock.Lock()
-	defer o.lock.Unlock()
-
-	user := o.users[uid]
-	user.passwd.PwHash = load_user_password(o.users[uid].passwd.HomeDir + "/.password")
-	o.users[uid] = user
-}
-
 func worker_error(format string, a ...interface{}) {
 	logger.Err("hackers.git: "+ format, a)
 	os.Exit(int(lsb.EXIT_FAILURE))
@@ -150,17 +140,7 @@ func (o *Hackers) worker() {
 					panic("recieved child event from inotify, but no child name")
 				}
 				filename := o.cfg.Yamldir + "/" + *event.Name
-				logger.Debug("hackers.git: Loading yaml file: %s", filename)
-				user, err := load_user_yaml(filename)
-				if err == nil {
-					// User added/updated
-					logger.Debug("hackers.git: ... success")
-					o.worker_handle_user_add(user)
-				} else if user.passwd.UID >= 0 {
-					// User became invalid
-					logger.Debug("hackers.git: ... error: %v", err)
-					o.worker_handle_user_del(user.passwd.UID)
-				}
+				o.load_yaml_file(filename)
 			} else {
 				panic("recieved non-subscribed inotify event from kernel")
 			}
@@ -181,7 +161,11 @@ func (o *Hackers) worker() {
 				o.worker_watch_homedirs()
 			} else if event.Name != nil {
 				if *event.Name == ".password" {
-					o.worker_handle_passwd(o.in_wd2uid[event.Wd])
+					func() {
+						o.lock.Lock()
+						defer o.lock.Unlock()
+						o.load_user_password(o.in_wd2uid[event.Wd])
+					}()
 				}
 			} else {
 				logger.Debug("hackers.git: event didn't match: %#v", event)
-- 
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