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Diffstat (limited to 'src/xmpp.erl')
| -rw-r--r-- | src/xmpp.erl | 712 |
1 files changed, 712 insertions, 0 deletions
diff --git a/src/xmpp.erl b/src/xmpp.erl new file mode 100644 index 000000000..ca6ed5e4c --- /dev/null +++ b/src/xmpp.erl @@ -0,0 +1,712 @@ +%%%------------------------------------------------------------------- +%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net> +%%% @copyright (C) 2015, Evgeny Khramtsov +%%% @doc +%%% +%%% @end +%%% Created : 9 Dec 2015 by Evgeny Khramtsov <ekhramtsov@process-one.net> +%%%------------------------------------------------------------------- +-module(xmpp). + +%% API +-export([make_iq_result/1, make_iq_result/2, make_error/2, + decode/1, decode/2, decode_tags_by_ns/2, encode/1, + get_type/1, get_to/1, get_from/1, get_id/1, + get_lang/1, get_error/1, get_els/1, get_ns/1, + set_type/2, set_to/2, set_from/2, set_id/2, + set_lang/2, set_error/2, set_els/2, set_from_to/3, + format_error/1, is_stanza/1, set_subtag/2, get_subtag/2, + remove_subtag/2, has_subtag/2, decode_els/1, pp/1, + get_name/1, get_text/1, mk_text/1, mk_text/2]). + +%% XMPP errors +-export([err_bad_request/0, err_bad_request/2, + err_bad_format/0, err_bad_format/2, + err_not_allowed/0, err_not_allowed/2, + err_conflict/0, err_conflict/2, + err_forbidden/0, err_forbidden/2, + err_not_acceptable/0, err_not_acceptable/2, + err_internal_server_error/0, err_internal_server_error/2, + err_service_unavailable/0, err_service_unavailable/2, + err_item_not_found/0, err_item_not_found/2, + err_jid_malformed/0, err_jid_malformed/2, + err_not_authorized/0, err_not_authorized/2, + err_feature_not_implemented/0, err_feature_not_implemented/2]). + +%% XMPP stream errors +-export([serr_bad_format/0, serr_bad_format/2, + serr_bad_namespace_prefix/0, serr_bad_namespace_prefix/2, + serr_conflict/0, serr_conflict/2, + serr_connection_timeout/0, serr_connection_timeout/2, + serr_host_gone/0, serr_host_gone/2, + serr_host_unknown/0, serr_host_unknown/2, + serr_improper_addressing/0, serr_improper_addressing/2, + serr_internal_server_error/0, serr_internal_server_error/2, + serr_invalid_from/0, serr_invalid_from/2, + serr_invalid_id/0, serr_invalid_id/2, + serr_invalid_namespace/0, serr_invalid_namespace/2, + serr_invalid_xml/0, serr_invalid_xml/2, + serr_not_authorized/0, serr_not_authorized/2, + serr_not_well_formed/0, serr_not_well_formed/2, + serr_policy_violation/0, serr_policy_violation/2, + serr_remote_connection_failed/0, serr_remote_connection_failed/2, + serr_reset/0, serr_reset/2, + serr_resource_constraint/0, serr_resource_constraint/2, + serr_restricted_xml/0, serr_restricted_xml/2, + serr_see_other_host/0, serr_see_other_host/2, + serr_system_shutdown/0, serr_system_shutdown/2, + serr_undefined_condition/0, serr_undefined_condition/2, + serr_unsupported_encoding/0, serr_unsupported_encoding/2, + serr_unsupported_stanza_type/0, serr_unsupported_stanza_type/2, + serr_unsupported_version/0, serr_unsupported_version/2]). + +-ifndef(NS_CLIENT). +-define(NS_CLIENT, <<"jabber:client">>). +-endif. + +-include("xmpp.hrl"). + +%%%=================================================================== +%%% API +%%%=================================================================== +-spec make_iq_result(iq()) -> iq(). +make_iq_result(IQ) -> + make_iq_result(IQ, undefined). + +-spec make_iq_result(iq(), xmpp_element() | xmlel() | undefined) -> iq(). +make_iq_result(#iq{type = Type, from = From, to = To} = IQ, El) + when Type == get; Type == set -> + SubEls = if El == undefined -> []; + true -> [El] + end, + IQ#iq{type = result, to = From, from = To, sub_els = SubEls}. + +-spec make_error(message(), error()) -> message(); + (presence(), error()) -> presence(); + (iq(), error()) -> iq(); + (xmlel(), error()) -> xmlel(). +make_error(#message{type = Type, from = From, to = To, sub_els = Els} = Msg, + Err) when Type /= error -> + Msg#message{type = error, from = To, to = From, sub_els = Els ++ [Err]}; +make_error(#presence{type = Type, from = From, to = To, sub_els = Els} = Pres, + Err) when Type /= error -> + Pres#presence{type = error, from = To, to = From, sub_els = Els ++ [Err]}; +make_error(#iq{type = Type, from = From, to = To, sub_els = Els} = IQ, + Err) when Type /= result, Type /= error -> + IQ#iq{type = error, from = To, to = From, sub_els = Els ++ [Err]}; +make_error(#xmlel{attrs = Attrs, children = Els} = El, Err) -> + To = fxml:get_attr(<<"to">>, Attrs), + From = fxml:get_attr(<<"from">>, Attrs), + Attrs1 = case To of + {value, T} -> + lists:keystore(<<"from">>, 1, Attrs, {<<"from">>, T}); + _ -> + Attrs + end, + Attrs2 = case From of + {value, F} -> + lists:keystore(<<"to">>, 1, Attrs1, {<<"to">>, F}); + _ -> + Attrs + end, + Attrs3 = lists:keystore(<<"type">>, 1, Attrs2, {<<"type">>, <<"error">>}), + El#xmlel{attrs = Attrs3, children = Els ++ [encode(Err)]}. + +-spec get_id(iq() | message() | presence() | xmlel()) -> undefined | binary(). +get_id(#iq{id = ID}) -> ID; +get_id(#message{id = ID}) -> ID; +get_id(#presence{id = ID}) -> ID; +get_id(#xmlel{attrs = Attrs}) -> + case fxml:get_attr(<<"id">>, Attrs) of + {value, ID} -> ID; + false -> undefined + end. + +-spec get_type(iq()) -> iq_type(); + (message()) -> message_type(); + (presence()) -> presence_type(); + (xmlel()) -> binary(). +get_type(#iq{type = T}) -> T; +get_type(#message{type = T}) -> T; +get_type(#presence{type = T}) -> T; +get_type(#xmlel{attrs = Attrs}) -> fxml:get_attr_s(<<"type">>, Attrs). + +-spec get_lang(iq() | message() | presence()) -> undefined | binary(). +get_lang(#iq{lang = L}) -> L; +get_lang(#message{lang = L}) -> L; +get_lang(#presence{lang = L}) -> L; +get_lang(#xmlel{attrs = Attrs}) -> + case fxml:get_attr(<<"xml:lang">>, Attrs) of + {value, L} -> L; + false -> undefined + end. + +-spec get_from(iq() | message() | presence()) -> undefined | jid:jid(). +get_from(#iq{from = J}) -> J; +get_from(#message{from = J}) -> J; +get_from(#presence{from = J}) -> J. + +-spec get_to(iq() | message() | presence()) -> undefined | jid:jid(). +get_to(#iq{to = J}) -> J; +get_to(#message{to = J}) -> J; +get_to(#presence{to = J}) -> J. + +-spec get_error(iq() | message() | presence()) -> undefined | error(). +get_error(#iq{error = E}) -> E; +get_error(#message{error = E}) -> E; +get_error(#presence{error = E}) -> E. + +-spec get_els(iq() | message() | presence()) -> [xmpp_element() | xmlel()]. +get_els(#iq{sub_els = Els}) -> Els; +get_els(#message{sub_els = Els}) -> Els; +get_els(#presence{sub_els = Els}) -> Els. + +-spec set_id(iq(), binary()) -> iq(); + (message(), binary()) -> message(); + (presence(), binary()) -> presence(). +set_id(#iq{} = IQ, I) -> IQ#iq{id = I}; +set_id(#message{} = Msg, I) -> Msg#message{id = I}; +set_id(#presence{} = Pres, I) -> Pres#presence{id = I}. + +-spec set_type(iq(), iq_type()) -> iq(); + (message(), message_type()) -> message(); + (presence(), presence_type()) -> presence(). +set_type(#iq{} = IQ, T) -> IQ#iq{type = T}; +set_type(#message{} = Msg, T) -> Msg#message{type = T}; +set_type(#presence{} = Pres, T) -> Pres#presence{type = T}. + +-spec set_lang(iq(), binary()) -> iq(); + (message(), binary()) -> message(); + (presence(), binary()) -> presence(). +set_lang(#iq{} = IQ, L) -> IQ#iq{lang = L}; +set_lang(#message{} = Msg, L) -> Msg#message{lang = L}; +set_lang(#presence{} = Pres, L) -> Pres#presence{lang = L}. + +-spec set_from(iq(), jid:jid()) -> iq(); + (message(), jid:jid()) -> message(); + (presence(), jid:jid()) -> presence(). +set_from(#iq{} = IQ, J) -> IQ#iq{from = J}; +set_from(#message{} = Msg, J) -> Msg#message{from = J}; +set_from(#presence{} = Pres, J) -> Pres#presence{from = J}. + +-spec set_to(iq(), jid:jid()) -> iq(); + (message(), jid:jid()) -> message(); + (presence(), jid:jid()) -> presence(). +set_to(#iq{} = IQ, J) -> IQ#iq{to = J}; +set_to(#message{} = Msg, J) -> Msg#message{to = J}; +set_to(#presence{} = Pres, J) -> Pres#presence{to = J}. + +-spec set_from_to(iq(), jid:jid(), jid:jid()) -> iq(); + (message(), jid:jid(), jid:jid()) -> message(); + (presence(), jid:jid(), jid:jid()) -> presence(). +set_from_to(#iq{} = IQ, F, T) -> IQ#iq{from = F, to = T}; +set_from_to(#message{} = Msg, F, T) -> Msg#message{from = F, to = T}; +set_from_to(#presence{} = Pres, F, T) -> Pres#presence{from = F, to = T}. + +-spec set_error(iq(), error()) -> iq(); + (message(), error()) -> message(); + (presence(), error()) -> presence(). +set_error(#iq{} = IQ, E) -> IQ#iq{error = E}; +set_error(#message{} = Msg, E) -> Msg#message{error = E}; +set_error(#presence{} = Pres, E) -> Pres#presence{error = E}. + +-spec set_els(iq(), [xmpp_element() | xmlel()]) -> iq(); + (message(), [xmpp_element() | xmlel()]) -> message(); + (presence(), [xmpp_element() | xmlel()]) -> presence(). +set_els(#iq{} = IQ, Els) -> IQ#iq{sub_els = Els}; +set_els(#message{} = Msg, Els) -> Msg#message{sub_els = Els}; +set_els(#presence{} = Pres, Els) -> Pres#presence{sub_els = Els}. + +-spec get_ns(xmpp_element() | xmlel()) -> binary(). +get_ns(#xmlel{attrs = Attrs}) -> + fxml:get_attr_s(<<"xmlns">>, Attrs); +get_ns(Pkt) -> + xmpp_codec:get_ns(Pkt). + +-spec get_name(xmpp_element() | xmlel()) -> binary(). +get_name(#xmlel{name = Name}) -> + Name; +get_name(Pkt) -> + xmpp_codec:get_name(Pkt). + +-spec decode(xmlel() | xmpp_element()) -> {ok, xmpp_element()} | {error, any()}. +decode(El) -> + decode(El, []). + +-spec decode(xmlel() | xmpp_element(), [proplists:property()]) -> + {ok, xmpp_element()} | {error, any()}. +decode(#xmlel{} = El, Opts) -> + xmpp_codec:decode(add_ns(El), Opts); +decode(Pkt, _Opts) -> + Pkt. + +-spec decode_els(iq()) -> iq(); + (message()) -> message(); + (presence()) -> presence(). +decode_els(Stanza) -> + Els = lists:map( + fun(#xmlel{} = El) -> + case xmpp_codec:is_known_tag(El) of + true -> decode(El); + false -> El + end; + (Pkt) -> + Pkt + end, get_els(Stanza)), + set_els(Stanza, Els). + +-spec encode(xmpp_element() | xmlel()) -> xmlel(). +encode(Pkt) -> + xmpp_codec:encode(Pkt). + +-spec decode_tags_by_ns([xmpp_element() | xmlel()], [binary()]) -> [xmpp_element()]. +decode_tags_by_ns(Els, NSList) -> + [xmpp_codec:decode(El) || El <- Els, lists:member(get_ns(El), NSList)]. + +format_error(Reason) -> + xmpp_codec:format_error(Reason). + +-spec is_stanza(any()) -> boolean(). +is_stanza(#message{}) -> true; +is_stanza(#iq{}) -> true; +is_stanza(#presence{}) -> true; +is_stanza(#xmlel{name = Name}) -> + (Name == <<"iq">>) or (Name == <<"message">>) or (Name == <<"presence">>); +is_stanza(_) -> false. + +-spec set_subtag(iq(), xmpp_element()) -> iq(); + (message(), xmpp_element()) -> message(); + (presence(), xmpp_element()) -> presence(). +set_subtag(Stanza, Tag) -> + TagName = xmpp_codec:get_name(Tag), + XMLNS = xmpp_codec:get_ns(Tag), + Els = get_els(Stanza), + NewEls = set_subtag(Els, Tag, TagName, XMLNS), + set_els(Stanza, NewEls). + +set_subtag([El|Els], Tag, TagName, XMLNS) -> + case {get_name(El), get_ns(El)} of + {TagName, XMLNS} -> + [Tag|Els]; + _ -> + [El|set_subtag(Els, Tag, TagName, XMLNS)] + end; +set_subtag([], Tag, _, _) -> + [Tag]. + +-spec get_subtag(stanza(), xmpp_element()) -> xmpp_element() | false. +get_subtag(Stanza, Tag) -> + Els = get_els(Stanza), + TagName = xmpp_codec:get_name(Tag), + XMLNS = xmpp_codec:get_ns(Tag), + get_subtag(Els, TagName, XMLNS). + +get_subtag([El|Els], TagName, XMLNS) -> + case {get_name(El), get_ns(El)} of + {TagName, XMLNS} -> + try + decode(El) + catch _:{xmpp_codec, _Why} -> + get_subtag(Els, TagName, XMLNS) + end; + _ -> + get_subtag(Els, TagName, XMLNS) + end; +get_subtag([], _, _) -> + false. + +-spec remove_subtag(iq(), xmpp_element()) -> iq(); + (message(), xmpp_element()) -> message(); + (presence(), xmpp_element()) -> presence(). +remove_subtag(Stanza, Tag) -> + Els = get_els(Stanza), + TagName = xmpp_codec:get_name(Tag), + XMLNS = xmpp_codec:get_ns(Tag), + NewEls = remove_subtag(Els, TagName, XMLNS), + set_els(Stanza, NewEls). + +remove_subtag([El|Els], TagName, XMLNS) -> + case {get_name(El), get_ns(El)} of + {TagName, XMLNS} -> + remove_subtag(Els, TagName, XMLNS); + _ -> + [El|remove_subtag(Els, TagName, XMLNS)] + end; +remove_subtag([], _, _) -> + []. + +-spec has_subtag(stanza(), xmpp_element()) -> boolean(). +has_subtag(Stanza, Tag) -> + Els = get_els(Stanza), + TagName = xmpp_codec:get_name(Tag), + XMLNS = xmpp_codec:get_ns(Tag), + has_subtag(Els, TagName, XMLNS). + +has_subtag([El|Els], TagName, XMLNS) -> + case {get_name(El), get_ns(El)} of + {TagName, XMLNS} -> + true; + _ -> + has_subtag(Els, TagName, XMLNS) + end; +has_subtag([], _, _) -> + false. + +-spec get_text([text()]) -> binary(). +get_text([]) -> <<"">>; +get_text([#text{data = undefined}|_]) -> <<"">>; +get_text([#text{data = Data}|_]) -> Data. + +-spec mk_text(binary()) -> [text()]. +mk_text(Text) -> + mk_text(Text, undefined). + +-spec mk_text(binary(), binary() | undefined) -> [text()]. +mk_text(<<"">>, _) -> + []; +mk_text(Text, Lang) -> + [#text{lang = Lang, + data = translate:translate(Lang, Text)}]. + +-spec pp(any()) -> iodata(). +pp(Term) -> + xmpp_codec:pp(Term). + +%%%=================================================================== +%%% Functions to construct general XMPP errors +%%%=================================================================== +-spec err_bad_request() -> error(). +err_bad_request() -> + err(modify, 'bad-request', 400). + +-spec err_bad_request(binary(), binary() | undefined) -> error(). +err_bad_request(Text, Lang) -> + err(modify, 'bad-request', 400, Text, Lang). + +-spec err_bad_format() -> error(). +err_bad_format() -> + err(modify, 'bad-format', 406). + +-spec err_bad_format(binary(), binary() | undefined) -> error(). +err_bad_format(Text, Lang) -> + err(modify, 'bad-format', 406, Text, Lang). + +-spec err_conflict() -> error(). +err_conflict() -> + err(cancel, 'conflict', 409). + +-spec err_conflict(binary(), binary() | undefined) -> error(). +err_conflict(Text, Lang) -> + err(cancel, 'conflict', 409, Text, Lang). + +-spec err_not_allowed() -> error(). +err_not_allowed() -> + err(cancel, 'not-allowed', 405). + +-spec err_not_allowed(binary(), binary() | undefined) -> error(). +err_not_allowed(Text, Lang) -> + err(cancel, 'not-allowed', 405, Text, Lang). + +-spec err_feature_not_implemented() -> error(). +err_feature_not_implemented() -> + err(cancel, 'feature-not-implemented', 501). + +-spec err_feature_not_implemented(binary(), binary() | undefined) -> error(). +err_feature_not_implemented(Text, Lang) -> + err(cancel, 'feature-not-implemented', 501, Text, Lang). + +-spec err_item_not_found() -> error(). +err_item_not_found() -> + err(cancel, 'item-not-found', 404). + +-spec err_item_not_found(binary(), binary() | undefined) -> error(). +err_item_not_found(Text, Lang) -> + err(cancel, 'item-not-found', 404, Text, Lang). + +-spec err_forbidden() -> error(). +err_forbidden() -> + err(auth, 'forbidden', 403). + +-spec err_forbidden(binary(), binary() | undefined) -> error(). +err_forbidden(Text, Lang) -> + err(auth, 'forbidden', 403, Text, Lang). + +-spec err_not_acceptable() -> error(). +err_not_acceptable() -> + err(modify, 'not-acceptable', 406). + +-spec err_not_acceptable(binary(), binary() | undefined) -> error(). +err_not_acceptable(Text, Lang) -> + err(modify, 'not-acceptable', 406, Text, Lang). + +-spec err_internal_server_error() -> error(). +err_internal_server_error() -> + err(wait, 'internal-server-error', 500). + +-spec err_internal_server_error(binary(), binary() | undefined) -> error(). +err_internal_server_error(Text, Lang) -> + err(wait, 'internal-server-error', 500, Text, Lang). + +-spec err_service_unavailable() -> error(). +err_service_unavailable() -> + err(cancel, 'service-unavailable', 503). + +-spec err_service_unavailable(binary(), binary() | undefined) -> error(). +err_service_unavailable(Text, Lang) -> + err(cancel, 'service-unavailable', 503, Text, Lang). + +-spec err_jid_malformed() -> error(). +err_jid_malformed() -> + err(modify, 'jid-malformed', 400). + +-spec err_jid_malformed(binary(), binary() | undefined) -> error(). +err_jid_malformed(Text, Lang) -> + err(modify, 'jid-malformed', 400, Text, Lang). + +-spec err_not_authorized() -> error(). +err_not_authorized() -> + err(auth, 'not-authorized', 401). + +-spec err_not_authorized(binary(), binary() | undefined) -> error(). +err_not_authorized(Text, Lang) -> + err(auth, 'not-authorized', 401, Text, Lang). + +%%%=================================================================== +%%% Functions to construct stream errors +%%%=================================================================== +-spec serr_bad_format() -> stream_error(). +serr_bad_format() -> + serr('bad-format'). + +-spec serr_bad_format(binary(), binary() | undefined) -> stream_error(). +serr_bad_format(Text, Lang) -> + serr('bad-format', Text, Lang). + +-spec serr_bad_namespace_prefix() -> stream_error(). +serr_bad_namespace_prefix() -> + serr('bad-namespace-prefix'). + +-spec serr_bad_namespace_prefix(binary(), binary() | undefined) -> stream_error(). +serr_bad_namespace_prefix(Text, Lang) -> + serr('bad-namespace-prefix', Text, Lang). + +-spec serr_conflict() -> stream_error(). +serr_conflict() -> + serr('conflict'). + +-spec serr_conflict(binary(), binary() | undefined) -> stream_error(). +serr_conflict(Text, Lang) -> + serr('conflict', Text, Lang). + +-spec serr_connection_timeout() -> stream_error(). +serr_connection_timeout() -> + serr('connection-timeout'). + +-spec serr_connection_timeout(binary(), binary() | undefined) -> stream_error(). +serr_connection_timeout(Text, Lang) -> + serr('connection-timeout', Text, Lang). + +-spec serr_host_gone() -> stream_error(). +serr_host_gone() -> + serr('host-gone'). + +-spec serr_host_gone(binary(), binary() | undefined) -> stream_error(). +serr_host_gone(Text, Lang) -> + serr('host-gone', Text, Lang). + +-spec serr_host_unknown() -> stream_error(). +serr_host_unknown() -> + serr('host-unknown'). + +-spec serr_host_unknown(binary(), binary() | undefined) -> stream_error(). +serr_host_unknown(Text, Lang) -> + serr('host-unknown', Text, Lang). + +-spec serr_improper_addressing() -> stream_error(). +serr_improper_addressing() -> + serr('improper-addressing'). + +-spec serr_improper_addressing(binary(), binary() | undefined) -> stream_error(). +serr_improper_addressing(Text, Lang) -> + serr('improper-addressing', Text, Lang). + +-spec serr_internal_server_error() -> stream_error(). +serr_internal_server_error() -> + serr('internal-server-error'). + +-spec serr_internal_server_error(binary(), binary() | undefined) -> stream_error(). +serr_internal_server_error(Text, Lang) -> + serr('internal-server-error', Text, Lang). + +-spec serr_invalid_from() -> stream_error(). +serr_invalid_from() -> + serr('invalid-from'). + +-spec serr_invalid_from(binary(), binary() | undefined) -> stream_error(). +serr_invalid_from(Text, Lang) -> + serr('invalid-from', Text, Lang). + +-spec serr_invalid_id() -> stream_error(). +serr_invalid_id() -> + serr('invalid-id'). + +-spec serr_invalid_id(binary(), binary() | undefined) -> stream_error(). +serr_invalid_id(Text, Lang) -> + serr('invalid-id', Text, Lang). + +-spec serr_invalid_namespace() -> stream_error(). +serr_invalid_namespace() -> + serr('invalid-namespace'). + +-spec serr_invalid_namespace(binary(), binary() | undefined) -> stream_error(). +serr_invalid_namespace(Text, Lang) -> + serr('invalid-namespace', Text, Lang). + +-spec serr_invalid_xml() -> stream_error(). +serr_invalid_xml() -> + serr('invalid-xml'). + +-spec serr_invalid_xml(binary(), binary() | undefined) -> stream_error(). +serr_invalid_xml(Text, Lang) -> + serr('invalid-xml', Text, Lang). + +-spec serr_not_authorized() -> stream_error(). +serr_not_authorized() -> + serr('not-authorized'). + +-spec serr_not_authorized(binary(), binary() | undefined) -> stream_error(). +serr_not_authorized(Text, Lang) -> + serr('not-authorized', Text, Lang). + +-spec serr_not_well_formed() -> stream_error(). +serr_not_well_formed() -> + serr('not-well-formed'). + +-spec serr_not_well_formed(binary(), binary() | undefined) -> stream_error(). +serr_not_well_formed(Text, Lang) -> + serr('not-well-formed', Text, Lang). + +-spec serr_policy_violation() -> stream_error(). +serr_policy_violation() -> + serr('policy-violation'). + +-spec serr_policy_violation(binary(), binary() | undefined) -> stream_error(). +serr_policy_violation(Text, Lang) -> + serr('policy-violation', Text, Lang). + +-spec serr_remote_connection_failed() -> stream_error(). +serr_remote_connection_failed() -> + serr('remote-connection-failed'). + +-spec serr_remote_connection_failed(binary(), binary() | undefined) -> stream_error(). +serr_remote_connection_failed(Text, Lang) -> + serr('remote-connection-failed', Text, Lang). + +-spec serr_reset() -> stream_error(). +serr_reset() -> + serr('reset'). + +-spec serr_reset(binary(), binary() | undefined) -> stream_error(). +serr_reset(Text, Lang) -> + serr('reset', Text, Lang). + +-spec serr_resource_constraint() -> stream_error(). +serr_resource_constraint() -> + serr('resource-constraint'). + +-spec serr_resource_constraint(binary(), binary() | undefined) -> stream_error(). +serr_resource_constraint(Text, Lang) -> + serr('resource-constraint', Text, Lang). + +-spec serr_restricted_xml() -> stream_error(). +serr_restricted_xml() -> + serr('restricted-xml'). + +-spec serr_restricted_xml(binary(), binary() | undefined) -> stream_error(). +serr_restricted_xml(Text, Lang) -> + serr('restricted-xml', Text, Lang). + +-spec serr_see_other_host() -> stream_error(). +serr_see_other_host() -> + serr('see-other-host'). + +-spec serr_see_other_host(binary(), binary() | undefined) -> stream_error(). +serr_see_other_host(Text, Lang) -> + serr('see-other-host', Text, Lang). + +-spec serr_system_shutdown() -> stream_error(). +serr_system_shutdown() -> + serr('system-shutdown'). + +-spec serr_system_shutdown(binary(), binary() | undefined) -> stream_error(). +serr_system_shutdown(Text, Lang) -> + serr('system-shutdown', Text, Lang). + +-spec serr_undefined_condition() -> stream_error(). +serr_undefined_condition() -> + serr('undefined-condition'). + +-spec serr_undefined_condition(binary(), binary() | undefined) -> stream_error(). +serr_undefined_condition(Text, Lang) -> + serr('undefined-condition', Text, Lang). + +-spec serr_unsupported_encoding() -> stream_error(). +serr_unsupported_encoding() -> + serr('unsupported-encoding'). + +-spec serr_unsupported_encoding(binary(), binary() | undefined) -> stream_error(). +serr_unsupported_encoding(Text, Lang) -> + serr('unsupported-encoding', Text, Lang). + +-spec serr_unsupported_stanza_type() -> stream_error(). +serr_unsupported_stanza_type() -> + serr('unsupported-stanza-type'). + +-spec serr_unsupported_stanza_type(binary(), binary() | undefined) -> stream_error(). +serr_unsupported_stanza_type(Text, Lang) -> + serr('unsupported-stanza-type', Text, Lang). + +-spec serr_unsupported_version() -> stream_error(). +serr_unsupported_version() -> + serr('unsupported-version'). + +-spec serr_unsupported_version(binary(), binary() | undefined) -> stream_error(). +serr_unsupported_version(Text, Lang) -> + serr('unsupported-version', Text, Lang). + +%%%=================================================================== +%%% Internal functions +%%%=================================================================== +-spec err('auth' | 'cancel' | 'continue' | 'modify' | 'wait', + atom() | gone() | redirect(), non_neg_integer()) -> error(). +err(Type, Reason, Code) -> + #error{type = Type, reason = Reason, code = Code}. + +-spec err('auth' | 'cancel' | 'continue' | 'modify' | 'wait', + atom() | gone() | redirect(), non_neg_integer(), + binary(), binary() | undefined) -> error(). +err(Type, Reason, Code, Text, Lang) -> + #error{type = Type, reason = Reason, code = Code, + text = #text{lang = Lang, + data = translate:translate(Lang, Text)}}. + +-spec serr(atom() | 'see-other-host'()) -> stream_error(). +serr(Reason) -> + #stream_error{reason = Reason}. + +-spec serr(atom() | 'see-other-host'(), binary(), + binary() | undefined) -> stream_error(). +serr(Reason, Text, Lang) -> + #stream_error{reason = Reason, + text = #text{lang = Lang, + data = translate:translate(Lang, Text)}}. + +-spec add_ns(xmlel()) -> xmlel(). +add_ns(#xmlel{name = Name} = El) when Name == <<"message">>; + Name == <<"presence">>; + Name == <<"iq">> -> + Attrs = lists:keystore(<<"xmlns">>, 1, El#xmlel.attrs, + {<<"xmlns">>, ?NS_CLIENT}), + El#xmlel{attrs = Attrs}; +add_ns(El) -> + El. |