[add user] Adds function that removes_user from passwd and group(need testing)

Signed-off-by: Thiago Abdo <tja14@inf.ufpr.br>

hdd/adduser.sh

@@ -93,6 +93,28 @@ add (){
     fi
 }
 
+remove_user(){
+
+    userDetail=$1
+    userName=$( echo $userDetail | cut -d':' -f1 );
+    echo $0": Removendo usuário "$userName" do passwd e shadow"
+
+    #remove from passwd
+    temp=mktemp;
+    sed "/^$userDetail:/d" /etc/passwd > $temp
+    cp $temp /etc/passwd
+    chown root:root /etc/passwd
+    chmod 644 /etc/passwd
+    rm $temp
+
+    #remove from shadow
+    temp=mktemp;
+    sed "/^$userName:/d" /etc/shadow > $temp
+    cp $temp /etc/shadow
+    chown root:shadow /etc/shadow
+    chmod 640 /etc/shadow
+    rm $temp
+}
 
 #This script can only be executed by a root/sudoer user
 if [ "$(/usr/bin/id -r -u)" != "0" ]; then
@@ -157,12 +179,14 @@ fi
 checkName=$( cat /etc/passwd | cut -d':' -f1-3 | grep -e "^$username:" )
 if [ -z "$checkName" ]; then
     #remove "$checkName"
+    remove_user "$checkName"
     echo $0": encontrei outro usuario local com o mesmo nome, devo remove-lo"
 fi
 
 checkID=$( cat /etc/passwd | cut -d':' -f1-3 | grep -e ":$uID$" )
 if [ -z "$checkID" ]; then
     #remove "$checkID"
+    remove_user "$checkID"
     echo $0": encontrei outro usuario local com o mesmo id, devo remove-lo"
 fi