CODEWITHSUNDEEP
moduleerlangxmppejabberd
leo7r
leo7r

Reputation: 10588

Get packet type in module (ejabberd 15.02)

I have this code for an ejabberd module. I am trying to filter messages in order to add meta-tags inside some of them but I am getting an error when I try to get the type of the Packet to filter only 'message' packets.

This is my code so far:

-module(mod_test).
-behaviour(gen_mod).

-include("ejabberd.hrl").
-include("logger.hrl").

-export([start/2,
         stop/1]).

-export([on_filter_packet/1]).


start(Host, _Opts) ->
    ejabberd_hooks:add(filter_packet, global, ?MODULE, on_filter_packet, 0).

stop(_Host) ->
    %?DEBUG("Bye bye, ejabberd world!", []),
    ok.

on_filter_packet({From, To, XML} = Packet) ->
    %% does something with a packet
    %% should return modified Packet or atom `drop` to drop the packet
    ?INFO_MSG("filtering packet :D", []),

    Packet_Type = xml:get_tag_attr_s("type", Packet),

    case Packet_Type of
        "message" ->
            ?INFO_MSG("Its a message...", []);
        _Other ->
            ?INFO_MSG("Other kind of presence~n~p", [Packet])
    end,

    %xml:get_tag_attr_s(list_to_binary("type"),Packet),

    % case Packet_Type of
    %   "message" ->
    %       process_received_message(Packet);
    %   _ ->
    %       Packet
    % end.

    Packet.

I am getting this error.

16:21:53.627 [error] {function_clause,[{xml,get_tag_attr_s,[<<"type">>,{{jid,<<"leo">>,<<"localhost">>,...

I have tried everything and nothing seems to solve the problem. How can I get the packet type?

Upvotes: 0

Views: 394

Answers (1)

Pascal
Pascal

Reputation: 14042

I guess that you want to do Packet_Type = xml:get_tag_attr_s("type", XML), not Packet_Type = xml:get_tag_attr_s("type", Packet)

Upvotes: 1

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