From 368d5b62c33d14ed619b22bae7e09e2973fdf627 Mon Sep 17 00:00:00 2001
From: Michael Pereira Neves
Date: Mon, 10 Nov 2014 11:25:53 -0200
Subject: [local-account] code review

---
 .../opt/openslx/scripts/systemd-create_users       | 73 ++++++++++++----------
 1 file changed, 41 insertions(+), 32 deletions(-)

diff --git a/server/modules/local_accounts/opt/openslx/scripts/systemd-create_users b/server/modules/local_accounts/opt/openslx/scripts/systemd-create_users
index 3ac554b5..5cabd4fd 100755
--- a/server/modules/local_accounts/opt/openslx/scripts/systemd-create_users
+++ b/server/modules/local_accounts/opt/openslx/scripts/systemd-create_users
@@ -2,56 +2,65 @@
 
 . /opt/openslx/config || { echo "Could not source config!"; exit 23; }
 
+#generate new user with useradd and insert password in /etc/shadow if exists
 create_user(){
-# generate the new lines that will be merged into the /etc/{passwd,shadow,group} files
-	unset IFS
-  if useradd -s /bin/bash -m $1 -K UID_MIN=1000 -K GID_MIN=1000; then	# if the users doesn't exists, create him without the password
-  	if [ -n "$2" ]; then
-    	sed -i "s#^$1:[^:]*:#$1:$2:#" "/etc/shadow" # set the password in the /etc/shadow file
-  	fi
+  local username="$1"
+  local password="$2"
+  uset IFS
+
+  #if the users doesn't exists, create him without the password
+  if useradd -s /bin/bash -m "$username" -K UID_MIN=1000 -K GID_MIN=1000; then
+    if [ -n "$password" ]; then
+      #set the password in the /etc/shadow file
+      sed -i "s#^${username}:[^:]*:#${username}:${password}:#" "/etc/shadow"
+    fi
   else
-    echo 'user $1 already exists'
-    if [ -n "$2" ] && [ $(grep ^$1: /etc/shadow | cut -d ':' -f2) != $2 ]; then # if the user already exists, check if the password has changed
-      echo "changing password to the new one"
-	    sed -i "s#^$1:[^:]*:#$1:$2:#" "/etc/shadow" # set the password in the /etc/shadow file
+    echo 'user ${username} already exists'
+    #if the user already exists, check if the password has changed
+    if [ -n "$password" ] && [ $(grep ^${username}: /etc/shadow | cut -d ':' -f2) != "$password" ]; then
+      echo "User password changed, updating /etc/shadow to new one"
+      #set the password in the /etc/shadow file
+      sed -i "s#^${username}:[^:]*:#${username}:${password}:#" "/etc/shadow"
     fi
   fi
 }
 
-mount | grep "/home" > /dev/null
-if [ $? -eq 0 ]; then
-  # check if the /home partition exists
+# check if the /home partition exists
+if mount | grep "/home" > /dev/null; then
   echo "/home partition found"
-  if useradd -s /bin/bash -m openslx -K UID_MIN=1000 -K GID_MIN=1000; then	# try to create the 'openslx' user, will fail if it already exists
+
+  #try to create the 'openslx' user in whose home dir backups and patch files will be stored
+  if useradd -s /bin/bash -m openslx -K UID_MIN=1000 -K GID_MIN=1000; then
     echo "user openslx created"
-    sed -i "s#^openslx:[^:]*:#openslx:$OPENSLX_PASS:#" "/etc/shadow" # set the password in the /etc/shadow file
+    #set the password in the /etc/shadow file
+    sed -i "s#^openslx:[^:]*:#openslx:$OPENSLX_PASS:#" "/etc/shadow"
   fi
 
-  for line in $SLX_USERS; do 	# create the accounts specified in the SLX_USERS config.
-  	IFS=,
-  	set $line
+  #create the accounts specified in the SLX_USERS config.
+  for line in $SLX_USERS; do
+    IFS=,
+    set $line
     create_user $1 $2
   done
-  
+
+  #patch passwd, shadow and group with changes the local admin made in that machine
   for file in passwd shadow group; do
     #backup files before patching to save slxbox state
-    echo "Backing up /etc/$file at /home/openslx/.$file.backup"
-    cp /etc/$file /home/openslx/.$file.backup
+    echo "Backing up /etc/${file} at /home/openslx/.${file}.backup"
+    cp /etc/${file} /home/openslx/.${file}.backup
 
-    # apply patch of users created by the admin in the last session.
-    if [ -e /home/openslx/.$file.patch ]; then
-      patch /etc/$file < /home/openslx/.$file.patch
+    #apply patch of users created by the admin in the last session.
+    if [ -e /home/openslx/.${file}.patch ]; then
+      patch /etc/${file} < /home/openslx/.${file}.patch
     fi
   done
-else  # if no /home partition was found, will create the user but won't do the patch and backup.
+
+else
+  #if no /home partition was found, will create the user but won't do the patch and backup.
   echo "No /home partition found on hdd. Creating non permanent users from slxbox."
-  if useradd -s /bin/bash -m openslx -K UID_MIN=1000 -K GID_MIN=1000; then	# try to create the 'openslx' user, will fail if it already exists
-    echo "user openslx created"
-    sed -i "s#^openslx:[^:]*:#openslx:$OPENSLX_PASS:#" "/etc/shadow" # set the password in the /etc/shadow file
-  fi
   for line in $SLX_USERS; do 	# create the accounts specified in the SLX_USERS config.
-  	IFS=,
-  	set $line
+    IFS=,
+    set $line
     create_user $1 $2
   done
-fi
\ No newline at end of file
+fi
-- 
cgit v1.2.3-55-g7522