133 lines
4.1 KiB
Erlang
133 lines
4.1 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : adhoc.erl
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%%% Author : Magnus Henoch <henoch@dtek.chalmers.se>
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%%% Purpose : Provide helper functions for ad-hoc commands (XEP-0050)
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%%% Created : 31 Oct 2005 by Magnus Henoch <henoch@dtek.chalmers.se>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2012 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License
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%%% along with this program; if not, write to the Free Software
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%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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%%% 02111-1307 USA
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%%%
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%%%----------------------------------------------------------------------
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-module(adhoc).
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-author('henoch@dtek.chalmers.se').
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-export([parse_request/1,
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produce_response/2,
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produce_response/1]).
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-include_lib("exmpp/include/exmpp.hrl").
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-include("ejabberd.hrl").
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-include("adhoc.hrl").
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%% Parse an ad-hoc request. Return either an adhoc_request record or
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%% an {error, ErrorType} tuple.
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parse_request(#iq{type = Type, ns = NS, payload = SubEl, lang = Lang}) ->
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try
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case {Type, NS} of
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{set, ?NS_ADHOC} ->
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?DEBUG("entering parse_request...", []),
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Node = exmpp_xml:get_attribute_as_list(SubEl, <<"node">>, ""),
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SessionID = exmpp_xml:get_attribute_as_list(SubEl, <<"sessionid">>, ""),
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Action = exmpp_xml:get_attribute_as_list(SubEl, <<"action">>, ""),
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XData = find_xdata_el(SubEl),
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AllEls = exmpp_xml:get_child_elements(SubEl),
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Others = case XData of
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false ->
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AllEls;
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_ ->
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lists:delete(XData, AllEls)
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end,
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#adhoc_request{lang = Lang,
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node = Node,
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sessionid = SessionID,
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action = Action,
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xdata = XData,
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others = Others};
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_ ->
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{error, 'bad-request'}
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end
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catch
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_ ->
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{error, 'bad-request'}
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end.
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%% Borrowed from mod_vcard.erl
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find_xdata_el(#xmlel{children = SubEls}) ->
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find_xdata_el1(SubEls).
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find_xdata_el1([]) ->
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false;
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find_xdata_el1([#xmlel{ns = ?NS_DATA_FORMS} = El | _Els]) ->
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El;
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find_xdata_el1([_ | Els]) ->
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find_xdata_el1(Els).
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%% Produce a <command/> node to use as response from an adhoc_response
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%% record, filling in values for language, node and session id from
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%% the request.
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produce_response(#adhoc_request{lang = Lang,
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node = Node,
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sessionid = SessionID},
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Response) ->
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produce_response(Response#adhoc_response{lang = Lang,
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node = Node,
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sessionid = SessionID}).
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%% Produce a <command/> node to use as response from an adhoc_response
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%% record.
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produce_response(#adhoc_response{lang = _Lang,
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node = Node,
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sessionid = ProvidedSessionID,
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status = Status,
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defaultaction = DefaultAction,
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actions = Actions,
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notes = Notes,
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elements = Elements}) ->
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SessionID = if is_list(ProvidedSessionID), ProvidedSessionID /= "" ->
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ProvidedSessionID;
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true ->
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jlib:now_to_utc_string(now())
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end,
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case Actions of
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[] ->
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ActionsEls = [];
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_ ->
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case DefaultAction of
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"" ->
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ActionsElAttrs = [];
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_ ->
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ActionsElAttrs = [?XMLATTR(<<"execute">>, DefaultAction)]
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end,
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ActionsEls = [#xmlel{ns = ?NS_ADHOC, name = 'actions', attrs =
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ActionsElAttrs, children =
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[#xmlel{ns = ?NS_ADHOC, name = Action} || Action <- Actions]}]
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end,
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NotesEls = lists:map(fun({Type, Text}) ->
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#xmlel{ns = ?NS_ADHOC, name = 'note', attrs =
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[?XMLATTR(<<"type">>, Type)],
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children = [#xmlcdata{cdata = list_to_binary(Text)}]}
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end, Notes),
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#xmlel{ns = ?NS_ADHOC, name = 'command', attrs =
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[?XMLATTR(<<"sessionid">>, SessionID),
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?XMLATTR(<<"node">>, Node),
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?XMLATTR(<<"status">>, Status)], children =
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ActionsEls ++ NotesEls ++ Elements}.
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