diff options
Diffstat (limited to 'src/cowboy_http.erl')
| -rw-r--r-- | src/cowboy_http.erl | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/cowboy_http.erl b/src/cowboy_http.erl index 6f42ab9..a78e090 100644 --- a/src/cowboy_http.erl +++ b/src/cowboy_http.erl @@ -36,6 +36,7 @@ -export([token/2]). -export([token_ci/2]). -export([quoted_string/2]). +-export([authorization/2]). %% Decoding. -export([te_chunked/2]). @@ -801,6 +802,52 @@ qvalue(<< C, Rest/binary >>, Fun, Q, M) qvalue(Data, Fun, Q, _M) -> Fun(Data, Q). +%% @doc Parse authorization value according rfc 2617. +%% Only Basic authorization is supported so far. +-spec authorization(binary(), binary()) -> {binary(), any()} | {error, badarg}. +authorization(UserPass, Type = <<"basic">>) -> + cowboy_http:whitespace(UserPass, + fun(D) -> + authorization_basic_userid(base64:mime_decode(D), + fun(Rest, Userid) -> + authorization_basic_password(Rest, + fun(Password) -> + {Type, {Userid, Password}} + end) + end) + end); +authorization(String, Type) -> + {Type, String}. + +%% @doc Parse user credentials. +-spec authorization_basic_userid(binary(), fun()) -> any(). +authorization_basic_userid(Data, Fun) -> + authorization_basic_userid(Data, Fun, <<>>). + +authorization_basic_userid(<<>>, _Fun, _Acc) -> + {error, badarg}; +authorization_basic_userid(<<C, _Rest/binary>>, _Fun, Acc) + when C < 32; C =:= 127; (C =:=$: andalso Acc =:= <<>>) -> + {error, badarg}; +authorization_basic_userid(<<$:, Rest/binary>>, Fun, Acc) -> + Fun(Rest, Acc); +authorization_basic_userid(<<C, Rest/binary>>, Fun, Acc) -> + authorization_basic_userid(Rest, Fun, <<Acc/binary, C>>). + +-spec authorization_basic_password(binary(), fun()) -> any(). +authorization_basic_password(Data, Fun) -> + authorization_basic_password(Data, Fun, <<>>). + +authorization_basic_password(<<>>, _Fun, <<>>) -> + {error, badarg}; +authorization_basic_password(<<C, _Rest/binary>>, _Fun, _Acc) + when C < 32; C=:= 127 -> + {error, badarg}; +authorization_basic_password(<<>>, Fun, Acc) -> + Fun(Acc); +authorization_basic_password(<<C, Rest/binary>>, Fun, Acc) -> + authorization_basic_password(Rest, Fun, <<Acc/binary, C>>). + %% Decoding. %% @doc Decode a stream of chunks. @@ -1294,4 +1341,15 @@ urlencode_test_() -> ?_assertEqual(<<"%ff+">>, urlencode(<<255, " ">>)) ]. +http_authorization_test_() -> + [?_assertEqual({<<"basic">>, {<<"Alladin">>, <<"open sesame">>}}, + authorization(<<"QWxsYWRpbjpvcGVuIHNlc2FtZQ==">>, <<"basic">>)), + ?_assertEqual({error, badarg}, + authorization(<<"dXNlcm5hbWUK">>, <<"basic">>)), + ?_assertEqual({error, badarg}, + authorization(<<"_[]@#$%^&*()-AA==">>, <<"basic">>)), + ?_assertEqual({error, badarg}, + authorization(<<"dXNlcjpwYXNzCA==">>, <<"basic">>)) %% user:pass\010 + ]. + -endif. |