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Modules shared by rabbitmq-server and rabbitmq-erlang-client
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Files
src/ssl_compat.erl
%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License
%% at http://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and
%% limitations under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developer of the Original Code is GoPivotal, Inc.
%% Copyright (c) 2007-2017 Pivotal Software, Inc. All rights reserved.
%%
-module(ssl_compat).
%% We don't want warnings about the use of ssl:connection_info/1 in this
%% module.
-compile(nowarn_deprecated_function).
-dialyzer({nowarn_function,
[connection_information_pre_18/1,
connection_information_pre_18/2]}).
%% Declare versioned functions to allow dynamic code loading,
%% depending on the Erlang version running. See 'code_version.erl' for details
-erlang_version_support(
[{18, [{connection_information, 1, connection_information_pre_18,
connection_information_post_18},
{connection_information, 2, connection_information_pre_18,
connection_information_post_18}]}
]).
-export([connection_information/1,
connection_information_pre_18/1,
connection_information_post_18/1,
connection_information/2,
connection_information_pre_18/2,
connection_information_post_18/2]).
connection_information(SslSocket) ->
code_version:update(?MODULE),
ssl_compat:connection_information(SslSocket).
connection_information_post_18(SslSocket) ->
ssl:connection_information(SslSocket).
connection_information_pre_18(SslSocket) ->
case ssl:connection_info(SslSocket) of
{ok, {ProtocolVersion, CipherSuite}} ->
{ok, [{protocol, ProtocolVersion},
{cipher_suite, CipherSuite}]};
{error, Reason} ->
{error, Reason}
end.
connection_information(SslSocket, Items) ->
code_version:update(?MODULE),
ssl_compat:connection_information(SslSocket, Items).
connection_information_post_18(SslSocket, Items) ->
ssl:connection_information(SslSocket, Items).
connection_information_pre_18(SslSocket, Items) ->
WantProtocolVersion = lists:member(protocol, Items),
WantCipherSuite = lists:member(cipher_suite, Items),
if
WantProtocolVersion orelse WantCipherSuite ->
case ssl:connection_info(SslSocket) of
{ok, {ProtocolVersion, CipherSuite}} ->
filter_information_items(ProtocolVersion,
CipherSuite,
Items,
[]);
{error, Reason} ->
{error, Reason}
end;
true ->
{ok, []}
end.
filter_information_items(ProtocolVersion, CipherSuite, [protocol | Rest],
Result) ->
filter_information_items(ProtocolVersion, CipherSuite, Rest,
[{protocol, ProtocolVersion} | Result]);
filter_information_items(ProtocolVersion, CipherSuite, [cipher_suite | Rest],
Result) ->
filter_information_items(ProtocolVersion, CipherSuite, Rest,
[{cipher_suite, CipherSuite} | Result]);
filter_information_items(ProtocolVersion, CipherSuite, [_ | Rest],
Result) ->
filter_information_items(ProtocolVersion, CipherSuite, Rest, Result);
filter_information_items(_ProtocolVersion, _CipherSuite, [], Result) ->
{ok, lists:reverse(Result)}.