* src/ejabberd_c2s.erl: Added C2S blacklist support (EJAB-625).

* src/mod_ip_blacklist.erl: Likewise.
* src/jlib.erl: Added IP format tuple to string function.
* src/ejabberd_socket.erl: Properly handled c2s start failure (happen for blacklisted IP).

SVN Revision: 1317

ChangeLog

@@ -1,3 +1,11 @@
+2008-05-05  Mickael Remond  <mremond@process-one.net>
+
+	* src/ejabberd_c2s.erl: Added C2S blacklist support (EJAB-625).
+	* src/mod_ip_blacklist.erl: Likewise.
+	* src/jlib.erl: Added IP format tuple to string function.
+	* src/ejabberd_socket.erl: Properly handled c2s start failure (happen
+	for blacklisted IP).
+
 2008-05-04  Alexey Shchepin  <alexey@process-one.net>
 
 	* src/ejabberd_receiver.erl: Don't activate a socket untill its

src/ejabberd_c2s.erl

@@ -176,26 +176,35 @@ init([{SockMod, Socket}, Opts]) ->
 			      (_) -> false
 			   end, Opts),
     IP = peerip(SockMod, Socket),
-    Socket1 =
-	if
-	    TLSEnabled ->
-		SockMod:starttls(Socket, TLSOpts);
-	    true ->
-		Socket
-	end,
-    SocketMonitor = SockMod:monitor(Socket1),
-    {ok, wait_for_stream, #state{socket         = Socket1,
-				 sockmod        = SockMod,
-				 socket_monitor = SocketMonitor,
-				 zlib           = Zlib,
-				 tls            = TLS,
-				 tls_required   = StartTLSRequired,
-				 tls_enabled    = TLSEnabled,
-				 tls_options    = TLSOpts,
-				 streamid       = new_id(),
-				 access         = Access,
-				 shaper         = Shaper,
-				 ip             = IP}, ?C2S_OPEN_TIMEOUT}.
+    %% Check if IP is blacklisted:
+    case is_ip_blacklisted(IP) of
+	true ->
+	    ?INFO_MSG("Connection attempt from blacklisted IP: ~s",
+		      [jlib:ip_to_list(IP)]),
+	    {stop, normal};
+	false ->
+	    Socket1 =
+		if
+		    TLSEnabled ->
+			SockMod:starttls(Socket, TLSOpts);
+		    true ->
+			Socket
+		end,
+	    SocketMonitor = SockMod:monitor(Socket1),
+	    {ok, wait_for_stream, #state{socket         = Socket1,
+					 sockmod        = SockMod,
+					 socket_monitor = SocketMonitor,
+					 zlib           = Zlib,
+					 tls            = TLS,
+					 tls_required   = StartTLSRequired,
+					 tls_enabled    = TLSEnabled,
+					 tls_options    = TLSOpts,
+					 streamid       = new_id(),
+					 access         = Access,
+					 shaper         = Shaper,
+					 ip             = IP},
+	     ?C2S_OPEN_TIMEOUT}
+    end.
 
 %% Return list of all available resources of contacts,
 %% in form [{JID, Caps}].
@@ -851,8 +860,6 @@ wait_for_session(closed, StateData) ->
     {stop, normal, StateData}.
 
 
-
-
 session_established({xmlstreamelement, El}, StateData) ->
     {xmlelement, Name, Attrs, _Els} = El,
     User = StateData#state.user,
@@ -1954,3 +1961,7 @@ fsm_reply(Reply, session_established, StateData) ->
     {reply, Reply, session_established, StateData, ?C2S_HIBERNATE_TIMEOUT};
 fsm_reply(Reply, StateName, StateData) ->
     {reply, Reply, StateName, StateData, ?C2S_OPEN_TIMEOUT}.
+
+%% Used by c2s blacklist plugins
+is_ip_blacklisted({IP,_Port}) ->
+    ejabberd_hooks:run_fold(check_bl_c2s, false, [IP]).	

src/ejabberd_socket.erl

@@ -65,19 +65,27 @@ start(Module, SockMod, Socket, Opts) ->
 	    SocketData = #socket_state{sockmod = SockMod,
 				       socket = Socket,
 				       receiver = Receiver},
-	    {ok, Pid} = Module:start({?MODULE, SocketData}, Opts),
-	    case SockMod:controlling_process(Socket, Receiver) of
-		ok ->
-		    ok;
+	    case Module:start({?MODULE, SocketData}, Opts) of
+		{ok, Pid} ->
+		    case SockMod:controlling_process(Socket, Receiver) of
+			ok ->
+			    ok;
+			{error, _Reason} ->
+			    SockMod:close(Socket)
+		    end,
+		    ejabberd_receiver:become_controller(Receiver, Pid);
 		{error, _Reason} ->
 		    SockMod:close(Socket)
-	    end,
-	    ejabberd_receiver:become_controller(Receiver, Pid);
+	    end;
 	raw ->
-	    {ok, Pid} = Module:start({SockMod, Socket}, Opts),
-	    case SockMod:controlling_process(Socket, Pid) of
-		ok ->
-		    ok;
+	    case Module:start({SockMod, Socket}, Opts) of
+		{ok, Pid} ->
+		    case SockMod:controlling_process(Socket, Pid) of
+			ok ->
+			    ok;
+			{error, _Reason} ->
+			    SockMod:close(Socket)
+		    end;
 		{error, _Reason} ->
 		    SockMod:close(Socket)
 	    end

src/jlib.erl

@@ -59,7 +59,8 @@
 	 now_to_local_string/1,
 	 datetime_string_to_timestamp/1,
 	 decode_base64/1,
-	 encode_base64/1]).
+	 encode_base64/1,
+	 ip_to_list/1]).
 
 -include("jlib.hrl").
 
@@ -676,3 +677,9 @@ e(X) when X>51, X<62 ->     X-4;
 e(62) ->                    $+;
 e(63) ->                    $/;
 e(X) ->                     exit({bad_encode_base64_token, X}).
+
+%% Convert Erlang inet IP to list
+ip_to_list({IP, _Port}) ->
+    ip_to_list(IP);
+ip_to_list({A,B,C,D}) ->
+    lists:flatten(io_lib:format("~w.~w.~w.~w",[A,B,C,D])).