Chapril/xmpp.chapril.org-ejabberd
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Fix IDNA conversion

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This commit is contained in:
Evgeniy Khramtsov 2013-06-28 02:45:04 +10:00
parent 91744733c1
commit 2636da0d98
1 changed files with 23 additions and 4 deletions
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27
src/idna.erl
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@ -28,18 +28,21 @@
-author('alexey@process-one.net').
%%-compile(export_all).
-export([domain_utf8_to_ascii/1,
domain_ucs2_to_ascii/1,
utf8_to_ucs2/1]).
-ifdef(TEST).
-include_lib("eunit/include/eunit.hrl").
-endif.
-spec domain_utf8_to_ascii(binary()) -> false | binary().
domain_utf8_to_ascii(Domain) ->
domain_ucs2_to_ascii(utf8_to_ucs2(Domain)).
utf8_to_ucs2(S) ->
list_to_binary(utf8_to_ucs2(binary_to_list(S), "")).
utf8_to_ucs2(binary_to_list(S), "").
utf8_to_ucs2([], R) -> lists:reverse(R);
utf8_to_ucs2([C | S], R) when C < 128 ->
@ -51,10 +54,10 @@ utf8_to_ucs2([C1, C2, C3 | S], R) when C1 < 240 ->
[C1 band 15 bsl 12 bor (C2 band 63 bsl 6) bor C3 band 63
| R]).
-spec domain_ucs2_to_ascii(binary()) -> false | binary().
-spec domain_ucs2_to_ascii(list()) -> false | binary().
domain_ucs2_to_ascii(Domain) ->
case catch domain_ucs2_to_ascii1(binary_to_list(Domain)) of
case catch domain_ucs2_to_ascii1(Domain) of
{'EXIT', _Reason} -> false;
Res -> iolist_to_binary(Res)
end.
@ -204,3 +207,19 @@ codepoint(C) ->
if (0 =< C) and (C =< 25) -> C + 97;
(26 =< C) and (C =< 35) -> C + 22
end.
%%%===================================================================
%%% Unit tests
%%%===================================================================
-ifdef(TEST).
acsii_test() ->
?assertEqual(<<"test.org">>, domain_utf8_to_ascii(<<"test.org">>)).
utf8_test() ->
?assertEqual(
<<"xn--d1acufc.xn--p1ai">>,
domain_utf8_to_ascii(
<<208,180,208,190,208,188,208,181,208,189,46,209,128,209,132>>)).
-endif.