Initial commit.

modoboa_installer/system.py

@@ -0,0 +1,36 @@
+"""System related functions."""
+
+import grp
+import pwd
+import sys
+
+from . import utils
+
+
+def create_user(name, home=None):
+    """Create a new system user."""
+    try:
+        pwd.getpwnam(name)
+    except KeyError:
+        pass
+    else:
+        return
+    cmd = "useradd -m "
+    if home:
+        cmd += "-d {} ".format(home)
+    utils.exec_cmd("{} {}".format(cmd, name))
+
+
+def add_user_to_group(user, group):
+    """Add system user to group."""
+    try:
+        pwd.getpwnam(user)
+    except KeyError:
+        print("User {} does not exist".format(user))
+        sys.exit(1)
+    try:
+        grp.getgrnam(group)
+    except KeyError:
+        print("Group {} does not exist".format(group))
+        sys.exit(1)
+    utils.exec_cmd("usermod -a -G {} {}".format(group, user))