Hello,
I posted a brief guide describing how to add cookies support to ejabberd (link below) in a simple way.
I was wondering if it was possible to eventually release a patch for the users who needs this support 
The patch is relatively simple and it would patch ejabberd_http.erl module and its header file ejabberd_http.hrl.
It works on ejabberd 1.1.x and ejabberd 2.x.
If needed I could send to you the cookie patch, or attach here the entire code.
(update)
I’m attaching the original post here:
To add cookies to HTTP POST/GET requests in ejabberd (1.1.x and 2.x) we have to add some fields in the request headers, setting up the request and state records in ejabberd_http.erl module and its header file ejabberd_http.hrl.
First of all, we will add the field cookie to the record request in ejabberd_http.hrl header file as follows:
-record(request, {method,
path,
q = [],
us,
auth,
lang = "",
data = "",
cookie = "", %% lp: cookie request field
ip
}).
As you can see we are referring to ejabberd 2.0 (in the request record we have the new field ip for new user info).
Now we will edit the ejabberd_http.erl module, adding the field request_cookie to the record state:
-record(state, {sockmod,
socket,
request_method,
request_version,
request_path,
request_auth,
request_cookie, %% lp: cookie request field
request_keepalive,
(...)
At this point, we have to pass cookies to handlers, modifying the process_headers and process_request functions:
In the process_header, we will add to the case construct
process_header(State, Data) ->
SockMod = State#state.sockmod,
Socket = State#state.socket,
case Data of
{ok, {http_request, Method, Uri, Version}} ->
(...)
{ok, {http_header, _, 'Authorization', _, Auth}} ->
State#state{request_auth = parse_auth(Auth)};
{ok, {http_header, _, 'Cookie', _, Cookie}} ->
%% lp: setting up request header cookie
State#state{request_cookie = Cookie};
{ok, {http_header, _, 'Content-Length', _, SLen}} ->
(...)
In the process_request we have to modify the function header as follows:
process_request(#state{request_method = 'GET',
request_path = {abs_path, Path},
request_auth = Auth,
request_lang = Lang,
request_cookie = Cookie, %% lp: cookie request field
request_handlers = RequestHandlers,
sockmod = SockMod,
socket = Socket} = State) ->
(...)
Request = #request{method = 'GET',
path = LPath,
q = LQuery,
auth = Auth,
lang = Lang,
cookie = Cookie, %% lp: here again :)
ip=IP},
(...)
and in the next header too:
process_request(#state{request_method = 'POST',
request_path = {abs_path, Path},
request_auth = Auth,
request_content_length = Len,
request_lang = Lang,
request_cookie = Cookie, %% lp: cookie
sockmod = SockMod,
socket = Socket,
request_handlers = RequestHandlers} = State)
when is_integer(Len) ->
(...)
Request = #request{method = 'POST',
path = LPath,
q = LQuery,
auth = Auth,
cookie = Cookie, %% lp: cookie the last one ;)
data = Data,
lang = Lang},
case process(RequestHandlers, Request) of
(...)
Now, we are ready to add the cookie request’s field to our modules processing http requests:
process(#request{us = _US,
path = "login",
q = _Query,
lang = _Lang,
cookie = _Cookie} = Request) ->
%% _Cookie will contain the request cookie now
%% Manage request by cookies
%% Send response :)
Cheers,
LP
Link:
http://erlangdevelopers.splinder.com/post/16609181/Add+cookie+support+in+ejabberd
