KICK: Fix denial of service bug

[ngircd.git] / src / ngircd / channel.c

diff --git a/src/ngircd/channel.c b/src/ngircd/channel.c
index 4eab2726a04393f40bc08ddec9ecfd4a4d5144c0..45bf615c29d604b453807e2a1e6c2b07c8c3f02c 100644 (file)
--- a/src/ngircd/channel.c
+++ b/src/ngircd/channel.c
@@ -326,6 +326,13 @@ Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
                }
        }
 
                }
        }
 

+       /* Check that the client to be kicked is on the specified channel */
+       if (!Channel_IsMemberOf(chan, Target)) {
+               IRC_WriteStrClient(Origin, ERR_USERNOTINCHANNEL_MSG,
+                                  Client_ID(Origin), Client_ID(Target), Name );
+               return;
+       }
+

        if(Client_Type(Peer) == CLIENT_USER) {
                /* Channel mode 'Q' and user mode 'q' on target: nobody but
                 * IRC Operators and servers can kick the target user */
        if(Client_Type(Peer) == CLIENT_USER) {
                /* Channel mode 'Q' and user mode 'q' on target: nobody but
                 * IRC Operators and servers can kick the target user */


@@ -382,13 +389,6 @@ Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
                }
        }
 
                }
        }
 

-       /* Check that the client to be kicked is on the specified channel */
-       if (!Channel_IsMemberOf(chan, Target)) {
-               IRC_WriteStrClient(Origin, ERR_USERNOTINCHANNEL_MSG,
-                                  Client_ID(Origin), Client_ID(Target), Name );
-               return;
-       }
-

        /* Kick Client from channel */
        Remove_Client( REMOVE_KICK, chan, Target, Origin, Reason, true);
 } /* Channel_Kick */
        /* Kick Client from channel */
        Remove_Client( REMOVE_KICK, chan, Target, Origin, Reason, true);
 } /* Channel_Kick */