%%%----------------------------------------------------------------------
%%% File : jlib.erl
%%% Author : Alexey Shchepin <alexey@sevcom.net>
%%% Purpose :
%%% Created : 23 Nov 2002 by Alexey Shchepin <alexey@sevcom.net>
%%% Id : $Id$
%%%----------------------------------------------------------------------
-module(jlib).
-author('alexey@sevcom.net').
-vsn('$Revision$ ').
-export([make_result_iq_reply/1,
make_error_reply/3,
make_error_element/2,
make_correct_from_to_attrs/3,
replace_from_to_attrs/3,
replace_from_to/3,
remove_attr/2,
string_to_jid/1,
jid_to_string/1,
is_nodename/1,
tolower/1,
jid_tolower/1,
jid_remove_resource/1,
get_iq_namespace/1,
iq_query_info/1,
is_iq_request_type/1,
iq_to_xml/1,
parse_xdata_submit/1,
timestamp_to_iso/1,
timestamp_to_xml/1]).
-include("namespaces.hrl").
%send_iq(From, To, ID, SubTags) ->
% ok.
make_result_iq_reply({xmlelement, Name, Attrs, SubTags}) ->
NewAttrs = make_result_iq_reply_attrs(Attrs),
{xmlelement, Name, NewAttrs, SubTags}.
make_result_iq_reply_attrs(Attrs) ->
To = xml:get_attr("to", Attrs),
From = xml:get_attr("from", Attrs),
Attrs1 = lists:keydelete("to", 1, Attrs),
Attrs2 = lists:keydelete("from", 1, Attrs1),
Attrs3 = case To of
{value, ToVal} ->
[{"from", ToVal} | Attrs2];
_ ->
Attrs2
end,
Attrs4 = case From of
{value, FromVal} ->
[{"to", FromVal} | Attrs3];
_ ->
Attrs3
end,
Attrs5 = lists:keydelete("type", 1, Attrs4),
Attrs6 = [{"type", "result"} | Attrs5],
Attrs6.
make_error_reply({xmlelement, Name, Attrs, SubTags}, Code, Desc) ->
NewAttrs = make_error_reply_attrs(Attrs),
{xmlelement, Name, NewAttrs, SubTags ++ [{xmlelement, "error",
[{"code", Code}],
[{xmlcdata, Desc}]}]}.
make_error_reply_attrs(Attrs) ->
To = xml:get_attr("to", Attrs),
From = xml:get_attr("from", Attrs),
Attrs1 = lists:keydelete("to", 1, Attrs),
Attrs2 = lists:keydelete("from", 1, Attrs1),
Attrs3 = case To of
{value, ToVal} ->
[{"from", ToVal} | Attrs2];
_ ->
Attrs2
end,
Attrs4 = case From of
{value, FromVal} ->
[{"to", FromVal} | Attrs3];
_ ->
Attrs3
end,
Attrs5 = lists:keydelete("type", 1, Attrs4),
Attrs6 = [{"type", "error"} | Attrs5],
Attrs6.
make_error_element(Code, Desc) ->
{xmlelement, "error",
[{"code", Code}],
[{xmlcdata, Desc}]}.
make_correct_from_to_attrs(From, To, Attrs) ->
Attrs1 = lists:keydelete("from", 1, Attrs),
Attrs2 = case xml:get_attr("to", Attrs) of
{value, _} ->
Attrs1;
_ ->
[{"to", To} | Attrs1]
end,
Attrs3 = [{"from", From} | Attrs2],
Attrs3.
replace_from_to_attrs(From, To, Attrs) ->
Attrs1 = lists:keydelete("to", 1, Attrs),
Attrs2 = lists:keydelete("from", 1, Attrs1),
Attrs3 = [{"to", To} | Attrs2],
Attrs4 = [{"from", From} | Attrs3],
Attrs4.
replace_from_to(From, To, {xmlelement, Name, Attrs, Els}) ->
NewAttrs = replace_from_to_attrs(jlib:jid_to_string(From),
jlib:jid_to_string(To),
Attrs),
{xmlelement, Name, NewAttrs, Els}.
remove_attr(Attr, {xmlelement, Name, Attrs, Els}) ->
NewAttrs = lists:keydelete(Attr, 1, Attrs),
{xmlelement, Name, NewAttrs, Els}.
string_to_jid(J) ->
string_to_jid1(J, "").
string_to_jid1([$@ | J], "") ->
error;
string_to_jid1([$@ | J], N) ->
string_to_jid2(J, lists:reverse(N), "");
string_to_jid1([$/ | J], "") ->
error;
string_to_jid1([$/ | J], N) ->
string_to_jid3(J, "", lists:reverse(N), "");
string_to_jid1([C | J], N)
when (C =< 32) or
(C == $") or
(C == $&) or
(C == $') or
(C == $:) or
(C == $<) or
(C == $>) or
(C == 127)
->
error;
string_to_jid1([C | J], N) ->
string_to_jid1(J, [C | N]);
string_to_jid1([], "") ->
error;
string_to_jid1([], N) ->
{"", lists:reverse(N), ""}.
string_to_jid2([$/ | J], N, "") ->
error;
string_to_jid2([$/ | J], N, S) ->
string_to_jid3(J, N, lists:reverse(S), "");
string_to_jid2([C | J], N, S) ->
string_to_jid2(J, N, [C | S]);
string_to_jid2([], N, "") ->
error;
string_to_jid2([], N, S) ->
{N, lists:reverse(S), ""}.
string_to_jid3([C | J], N, S, R) ->
string_to_jid3(J, N, S, [C | R]);
string_to_jid3([], N, S, R) ->
{N, S, lists:reverse(R)}.
jid_to_string({Node, Server, Resource}) ->
S1 = case Node of
"" ->
"";
_ ->
Node ++ "@"
end,
S2 = S1 ++ Server,
S3 = case Resource of
"" ->
S2;
_ ->
S2 ++ "/" ++ Resource
end,
S3.
is_nodename([]) ->
false;
is_nodename(J) ->
is_nodename1(J).
is_nodename1([C | J])
when (C =< 32) or
(C == $") or
(C == $&) or
(C == $') or
(C == $:) or
(C == $<) or
(C == $>) or
(C == $@) or
(C == $/) or
(C == 127)
->
false;
is_nodename1([C | J]) ->
is_nodename1(J);
is_nodename1([]) ->
true.
% TODO: UNICODE support
%tolower_c(C) when C >= $A, C =< $Z ->
% C + 32;
%tolower_c(C) ->
% C.
-define(LOWER(Char),
if
Char >= $A, Char =< $Z ->
Char + 32;
true ->
Char
end).
%tolower(S) ->
% lists:map(fun tolower_c/1, S).
%tolower(S) ->
% [?LOWER(Char) || Char <- S].
% Not tail-recursive but it seems works faster than variants above
tolower([C | Cs]) when C >= $A, C =< $Z ->
[C + 32 | tolower(Cs)];
tolower([C | Cs]) ->
[C | tolower(Cs)];
tolower([]) ->
[].
jid_tolower({U, S, R}) ->
{tolower(U), tolower(S), R}.
jid_remove_resource({U, S, R}) ->
{U, S, ""}.
get_iq_namespace({xmlelement, Name, Attrs, Els}) when Name == "iq" ->
case xml:remove_cdata(Els) of
[{xmlelement, Name2, Attrs2, Els2}] ->
xml:get_attr_s("xmlns", Attrs2);
_ ->
""
end;
get_iq_namespace(_) ->
"".
iq_query_info({xmlelement, Name, Attrs, Els}) when Name == "iq" ->
ID = xml:get_attr_s("id", Attrs),
Type = xml:get_attr_s("type", Attrs),
case xml:remove_cdata(Els) of
[{xmlelement, Name2, Attrs2, Els2}] ->
XMLNS = xml:get_attr_s("xmlns", Attrs2),
Type1 = case Type of
"set" -> set;
"get" -> get;
"result" -> reply;
"error" -> reply;
_ -> invalid
end,
if
(Type1 /= invalid) and (Type1 /= reply) and (XMLNS /= "") ->
{iq, ID, Type1, XMLNS, {xmlelement, Name2, Attrs2, Els2}};
true ->
if
Type1 == reply ->
reply;
true ->
invalid
end
end;
_ ->
invalid
end;
iq_query_info(_) ->
not_iq.
is_iq_request_type(set) -> true;
is_iq_request_type(get) -> true;
is_iq_request_type(_) -> false.
iq_type_to_string(set) -> "set";
iq_type_to_string(get) -> "get";
iq_type_to_string(result) -> "result";
iq_type_to_string(error) -> "error";
iq_type_to_string(_) -> invalid.
iq_to_xml({iq, ID, Type, _, SubEl}) ->
if
ID /= "" ->
{xmlelement, "iq",
[{"id", ID}, {"type", iq_type_to_string(Type)}], SubEl};
true ->
{xmlelement, "iq",
[{"type", iq_type_to_string(Type)}], SubEl}
end.
parse_xdata_submit(El) ->
{xmlelement, Name, Attrs, Els} = El,
case xml:get_attr_s("type", Attrs) of
"submit" ->
lists:reverse(parse_xdata_fields(Els, []));
_ ->
invalid
end.
parse_xdata_fields([], Res) ->
Res;
parse_xdata_fields([{xmlelement, Name, Attrs, SubEls} | Els], Res) ->
case Name of
"field" ->
case xml:get_attr_s("var", Attrs) of
"" ->
parse_xdata_fields(Els, Res);
Var ->
Field =
{Var, lists:reverse(parse_xdata_values(SubEls, []))},
parse_xdata_fields(Els, [Field | Res])
end;
_ ->
parse_xdata_fields(Els, Res)
end;
parse_xdata_fields([_ | Els], Res) ->
parse_xdata_fields(Els, Res).
parse_xdata_values([], Res) ->
Res;
parse_xdata_values([{xmlelement, Name, Attrs, SubEls} | Els], Res) ->
case Name of
"value" ->
Val = xml:get_cdata(SubEls),
parse_xdata_values(Els, [Val | Res]);
_ ->
parse_xdata_values(Els, Res)
end;
parse_xdata_values([_ | Els], Res) ->
parse_xdata_values(Els, Res).
timestamp_to_iso({{Year, Month, Day}, {Hour, Minute, Second}}) ->
lists:flatten(
io_lib:format("~4..0w~2..0w~2..0wT~2..0w:~2..0w:~2..0w",
[Year, Month, Day, Hour, Minute, Second])).
timestamp_to_xml({{Year, Month, Day}, {Hour, Minute, Second}}) ->
{xmlelement, "x",
[{"xmlns", ?NS_DELAY},
{"stamp", lists:flatten(
io_lib:format("~4..0w~2..0w~2..0wT~2..0w:~2..0w:~2..0w",
[Year, Month, Day, Hour, Minute, Second]))}],
[]}.
