Only allow root to run update plugins

Several plugins need restarting the DS (or they currently do
an external bind).
Rather than disabling plugins (possibly partially), refuse
to run them when run as an unprivileged user.

This means running ipa-ldap-updater as non-root requires specifying
a list of files, and omiting the --upgrade and --plugins options.

https://fedorahosted.org/freeipa/ticket/2621

install/tools/ipa-ldap-updater

@@ -83,14 +83,27 @@ def get_dirman_password():
 def main():
     badsyntax = False
     upgradefailed = False
-    run_plugins = False
 
     safe_options, options, args = parse_options()
 
+    run_plugins = options.plugins
+
+    files = []
+    if len(args) > 0:
+        files = args
+
+    if len(files) < 1:
+        run_plugins = True
+
     if os.getegid() == 0:
         installutils.check_server_configuration()
-    elif not os.path.exists('/etc/ipa/default.conf'):
-        sys.exit("IPA is not configured on this system.")
+    else:
+        if not os.path.exists('/etc/ipa/default.conf'):
+            sys.exit("IPA is not configured on this system.")
+        if options.upgrade:
+            sys.exit('Upgrade can only be done as root')
+        if run_plugins:
+            sys.exit('Plugins can only be run as root.')
 
     dirman_password = ""
     if options.password:
@@ -115,17 +128,8 @@ def main():
     api.bootstrap(**cfg)
     api.finalize()
 
-    files = []
-    if len(args) > 0:
-        files = args
-
-    if len(files) < 1:
-        run_plugins = True
-
     updates = None
     if options.upgrade:
-        if os.getegid() != 0:
-            sys.exit('Upgrade can only be done as root')
         root_logger.debug('%s was invoked with arguments %s and options: %s' % (sys.argv[0], args, safe_options))
         realm = krbV.default_context().default_realm
         upgrade = IPAUpgrade(realm, files, live_run=not options.test)
@@ -134,7 +138,7 @@ def main():
         badsyntax = upgrade.badsyntax
         upgradefailed = upgrade.upgradefailed
     else:
-        ld = LDAPUpdate(dm_password=dirman_password, sub_dict={}, live_run=not options.test, ldapi=options.ldapi, plugins=options.plugins or run_plugins)
+        ld = LDAPUpdate(dm_password=dirman_password, sub_dict={}, live_run=not options.test, ldapi=options.ldapi, plugins=run_plugins)
         if len(files) < 1:
             files = ld.get_all_files(UPDATES_DIR)
         modified = ld.update(files)

ipaserver/install/plugins/updateclient.py

@@ -165,9 +165,6 @@ class updateclient(backend.Executioner):
         return self.Updater[method](**kw) #pylint: disable=E1101
 
     def restart(self, dm_password, live_run):
-        if os.getegid() != 0:
-            self.log.warn("Not root, skipping restart")
-            return
         dsrestart = DSRestart()
         socket_name = '/var/run/slapd-%s.socket' % \
             api.env.realm.replace('.','-')