set user and group

Signed-off-by: Mattias Andrée <maandree@operamail.com>

3 files changed, 34 insertions, 1 deletions

diff --git a/src/cerberus.c b/src/cerberus.c
index d61f541..f60f64c 100644
--- a/src/cerberus.c
+++ b/src/cerberus.c
@@ -18,6 +18,8 @@
  */
 #include "cerberus.h"
 
+/* TODO use log */
+
 
 /**
  * Mane method
@@ -177,7 +179,10 @@ int main(int argc, char** argv)
   reenable_echo();
   
   
-  /* TODO login */
+  /* Login */
+  /* TODO verify that user is enabled */
+  set_user(entry);
+  /* TODO set supplemental groups */
   chdir_home(entry);
   ensure_shell(entry);
   set_environ(entry, preserve_env);
diff --git a/src/login.c b/src/login.c
index 5a97fb6..46bf4e2 100644
--- a/src/login.c
+++ b/src/login.c
@@ -33,6 +33,27 @@ extern char** environ;
 
 
 /**
+ * Set the user gid and uid
+ * 
+ * @param  entry  The user entry in the password file
+ */
+void set_user(struct passwd* entry)
+{
+  if (setgid(entry->pw_gid) && entry->pw_gid)
+    {
+      perror("setgid");
+      _exit(1);
+    }
+  
+  if (setuid(entry->pw_uid) && entry->pw_uid)
+    {
+      perror("setuid");
+      _exit(1);
+    }
+}
+
+
+/**
  * Change directory to the user's home directory
  * 
  * @param  entry  The user entry in the password file
diff --git a/src/login.h b/src/login.h
index 43cb302..14014f2 100644
--- a/src/login.h
+++ b/src/login.h
@@ -23,6 +23,13 @@
 
 
 /**
+ * Set the user gid and uid
+ * 
+ * @param  entry  The user entry in the password file
+ */
+void set_user(struct passwd* entry);
+
+/**
  * Change directory to the user's home directory
  * 
  * @param  entry  The user entry in the password file