From cebdb87387948cf21ff81b22e12728461af226fe Mon Sep 17 00:00:00 2001
From: Evgeniy Khramtsov <ekhramtsov@process-one.net>
Date: Thu, 2 Mar 2017 15:30:34 +0300
Subject: [PATCH] Revert "Remove relict mod_service_log"

This reverts commit 0d4e1abbd11155a1cddbe809ff09183af1427af8.
However, stanzas are now encapsulated into forwarded element
(as per XEP-0297) instead of <route/> nonza.
---
 src/mod_service_log.erl | 105 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 src/mod_service_log.erl

diff --git a/src/mod_service_log.erl b/src/mod_service_log.erl
new file mode 100644
index 000000000..d29cd1329
--- /dev/null
+++ b/src/mod_service_log.erl
@@ -0,0 +1,105 @@
+%%%----------------------------------------------------------------------
+%%% File    : mod_service_log.erl
+%%% Author  : Alexey Shchepin <alexey@process-one.net>
+%%% Purpose : Copy user messages to logger service
+%%% Created : 24 Aug 2003 by Alexey Shchepin <alexey@process-one.net>
+%%%
+%%%
+%%% ejabberd, Copyright (C) 2002-2017   ProcessOne
+%%%
+%%% This program is free software; you can redistribute it and/or
+%%% modify it under the terms of the GNU General Public License as
+%%% published by the Free Software Foundation; either version 2 of the
+%%% License, or (at your option) any later version.
+%%%
+%%% This program is distributed in the hope that it will be useful,
+%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+%%% General Public License for more details.
+%%%
+%%% You should have received a copy of the GNU General Public License along
+%%% with this program; if not, write to the Free Software Foundation, Inc.,
+%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+%%%
+%%%----------------------------------------------------------------------
+
+-module(mod_service_log).
+
+-author('alexey@process-one.net').
+
+-behaviour(gen_mod).
+
+-export([start/2, stop/1, log_user_send/1,
+	 log_user_receive/1, mod_opt_type/1, depends/2]).
+
+-include("ejabberd.hrl").
+-include("logger.hrl").
+
+-include("xmpp.hrl").
+
+start(Host, _Opts) ->
+    ejabberd_hooks:add(user_send_packet, Host, ?MODULE,
+		       log_user_send, 50),
+    ejabberd_hooks:add(user_receive_packet, Host, ?MODULE,
+		       log_user_receive, 50),
+    ok.
+
+stop(Host) ->
+    ejabberd_hooks:delete(user_send_packet, Host, ?MODULE,
+			  log_user_send, 50),
+    ejabberd_hooks:delete(user_receive_packet, Host,
+			  ?MODULE, log_user_receive, 50),
+    ok.
+
+depends(_Host, _Opts) ->
+    [].
+
+-spec log_user_send({stanza(), ejabberd_c2s:state()}) -> {stanza(), ejabberd_c2s:state()}.
+log_user_send({Packet, C2SState}) ->
+    From = xmpp:get_from(Packet),
+    To = xmpp:get_to(Packet),
+    log_packet(From, To, Packet, From#jid.lserver),
+    {Packet, C2SState}.
+
+-spec log_user_receive({stanza(), ejabberd_c2s:state()}) -> {stanza(), ejabberd_c2s:state()}.
+log_user_receive({Packet, C2SState}) ->
+    From = xmpp:get_from(Packet),
+    To = xmpp:get_to(Packet),
+    log_packet(From, To, Packet, To#jid.lserver),
+    {Packet, C2SState}.
+
+-spec log_packet(jid(), jid(), stanza(), binary()) -> ok.
+log_packet(From, To, Packet, Host) ->
+    Loggers = gen_mod:get_module_opt(Host, ?MODULE, loggers,
+                                     fun(L) ->
+                                             lists:map(
+                                               fun(S) ->
+                                                       B = iolist_to_binary(S),
+                                                       N = jid:nameprep(B),
+                                                       if N /= error ->
+                                                               N
+                                                       end
+                                               end, L)
+                                     end, []),
+    ServerJID = jid:make(Host),
+    FixedPacket = xmpp:set_from_to(Packet, From, To),
+    lists:foreach(fun (Logger) ->
+			  ejabberd_router:route(ServerJID,
+						jid:make(Logger),
+						#xmlel{name = <<"route">>,
+						       attrs = [],
+						       children =
+							   [FixedPacket]})
+		  end,
+		  Loggers).
+
+mod_opt_type(loggers) ->
+    fun (L) ->
+	    lists:map(fun (S) ->
+			      B = iolist_to_binary(S),
+			      N = jid:nameprep(B),
+			      if N /= error -> N end
+		      end,
+		      L)
+    end;
+mod_opt_type(_) -> [loggers].