Add X-Ldap-GroupDN for search user in group without memberOf.

README.md

@@ -134,6 +134,17 @@ The reference implementation uses cookie-based authentication. If you are using
 <strong>#</strong>proxy_set_header Cookie nginxauth=$cookie_nginxauth;
 </pre>
 
+
+If you don't have memberOf in ldap and need check user in group by memberUid, set **X-Ldap-GroupDN**
+
+```
+proxy_set_header X-Ldap-GroupDN "cn=mygroup,ou=Group,dc=test,dc=com";
+```
+
+This will check if memberUid=username is in the specified group.
+
+
+
 ## Customization
 ### Caching
 

debian/nginx-ldap-auth.init

@@ -40,7 +40,7 @@ case "$1" in
 	fi
 
     SSDOPTS="--quiet --oknodo --background --no-close --make-pidfile --pidfile $PIDFILE --chuid $USER:$GROUP --exec $DAEMON"
-    DAEMON_ARGS="$URL $BASE $BIND_DN $BIND_PASS $COOKIE $FILTER $REALM"
+    DAEMON_ARGS="$URL $BASE $BIND_DN $BIND_PASS $COOKIE $FILTER $GROUPDN $REALM"
 
 	if start-stop-daemon --start $SSDOPTS -- $DAEMON_ARGS > $LOG 2>&1
 	then

nginx-ldap-auth-daemon.py

@@ -164,6 +164,7 @@ class LDAPAuthHandler(AuthHandler):
              'basedn': ('X-Ldap-BaseDN', None),
              'template': ('X-Ldap-Template', '(cn=%(username)s)'),
              'binddn': ('X-Ldap-BindDN', ''),
+             'groupdn': ('X-Ldap-GroupDN', ''),
              'bindpasswd': ('X-Ldap-BindPass', ''),
              'cookiename': ('X-CookieName', '')
         }
@@ -227,6 +228,31 @@ class LDAPAuthHandler(AuthHandler):
             ctx['action'] = 'binding as search user'
             ldap_obj.bind_s(ctx['binddn'], ctx['bindpasswd'], ldap.AUTH_SIMPLE)
             
+            # Search memberUid in groupdn if defined
+            if ctx['groupdn']:
+                self.log_message('GroupDN defined to {}'.format(ctx['groupdn']))
+                
+                ctx['action'] = 'preparing search filter'
+                searchfilter = "(memberUid=%s)" % ctx['user']
+
+                self.log_message(('searching on server "%s" with base dn ' +\
+                              '"%s" with filter "%s"') %
+                              (ctx['url'], ctx['groupdn'], searchfilter))
+ 
+                ctx['action'] = 'running search query in GroupDN'
+                results = ldap_obj.search_s(ctx['groupdn'], ldap.SCOPE_SUBTREE,
+                                          searchfilter, ['objectclass'], 1)
+
+                ctx['action'] = 'verifying search query results for GroupDN'
+                nres = len(results)
+
+                if nres < 1:
+                    self.auth_failed(ctx, 'no memberUid found')
+                    return
+                
+                self.log_message("MemberUid found in GroupDN")
+                
+            # Search filter
             ctx['action'] = 'preparing search filter'
             searchfilter = ctx['template'] % { 'username': ctx['user'] }
    
@@ -313,6 +339,8 @@ if __name__ == '__main__':
     group.add_argument('-f', '--filter', metavar='filter',
         default='(cn=%(username)s)',
         help="LDAP filter (Default: cn=%%(username)s)")
+    group.add_argument('-g', metavar='groupdn', dest="groupdn", default='',
+        help="LDAP groupDN that must contain the memberUid=username (Default: unset)")
     # http options:
     group = parser.add_argument_group(title="HTTP options")
     group.add_argument('-R', '--realm', metavar='"Restricted Area"',
@@ -330,6 +358,7 @@ if __name__ == '__main__':
              'disable_referrals': ('X-Ldap-DisableReferrals', args.disable_referrals),
              'basedn': ('X-Ldap-BaseDN', args.basedn),
              'template': ('X-Ldap-Template', args.filter),
+             'groupdn': ('X-Ldap-GroupDN', args.groupdn),
              'binddn': ('X-Ldap-BindDN', args.binddn),
              'bindpasswd': ('X-Ldap-BindPass', args.bindpw),
              'cookiename': ('X-CookieName', args.cookie)

nginx-ldap-auth.conf

@@ -71,6 +71,7 @@ http {
             #    cookiename     X-CookieName
             #    realm          X-Ldap-Realm
             #    template       X-Ldap-Template
+ 	        #	 groupdn        X-Ldap-GroupDN
 
             # (Required) Set the URL and port for connecting to the LDAP server,
             # by replacing 'example.com'.
@@ -116,6 +117,11 @@ http {
             # nginx-ldap-auth-daemon.py.
             #proxy_set_header X-Ldap-Template "(cn=%(username)s)";
 
+            # Optional. If you don't have memberOf in ldap 
+            # and need check user in group by memberUid
+	        # proxy_set_header X-Ldap-GroupDN "cn=mygroup,ou=Group,dc=test,dc=com";
+
+
             # (Optional) Set the realm name, by uncommenting the following
             # directive and replacing 'Restricted' which is the default set
             # in nginx-ldap-auth-daemon.py.

nginx-ldap-auth.default

@@ -8,6 +8,7 @@
 #BIND_PASS="-w secret"
 #COOKIE="-c nginxauth"
 #FILTER="-f (cn=%(username)s)"
+#GROUPDN="-g cn=mygroup,ou=Group,dc=test,dc=com"
 #REALM="-R 'Restricted Area'"
 
 # these are used with init scripts only

nginx-ldap-auth.service

@@ -8,7 +8,7 @@ User=nginx-ldap-auth
 Group=nginx-ldap-auth
 WorkingDirectory=/var/run
 EnvironmentFile=/etc/default/nginx-ldap-auth
-ExecStart=/usr/bin/nginx-ldap-auth-daemon $URL $BASE $BIND_DN $BIND_PASS $COOKIE $FILTER $REALM
+ExecStart=/usr/bin/nginx-ldap-auth-daemon $URL $BASE $BIND_DN $BIND_PASS $COOKIE $FILTER $GROUPDN $REALM
 KillMode=process
 KillSignal=SIGINT
 Restart=on-failure