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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2019-2021. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%
-module(ssh_agent_SUITE).
-include_lib("common_test/include/ct.hrl").
-include("ssh.hrl").
-include("ssh_agent.hrl").
-include("ssh_test_lib.hrl").
-export([
suite/0,
all/0,
init_per_suite/1,
end_per_suite/1,
init_per_testcase/2,
end_per_testcase/2
]).
-export([
connect_with_ssh_agent/1,
request_identities/1,
sign_request/1
]).
%% Test configuration
suite() ->
[{timetrap, {seconds, 30}}].
all() ->
[request_identities, sign_request, connect_with_ssh_agent].
init_per_suite(Config) ->
?CHECK_CRYPTO(
begin
ok = ssh:start(),
chk_unix_domain_socket(Config)
end
).
end_per_suite(_Config) ->
ok = ssh:stop().
init_per_testcase(connect_with_ssh_agent, Config) ->
DataDir = proplists:get_value(data_dir, Config),
UserDir = proplists:get_value(priv_dir, Config),
AgentUserDir = filename:join(UserDir,"agent"), % just to separate them in the tests
% so we know that the right dir is used
file:make_dir(AgentUserDir),
%% Arrange the host keys in <priv_dir>/system
ct:log("Host keys setup for: ~p",
[ssh_test_lib:setup_all_host_keys(Config)]),
%% Copy the user's files used by the daemon
{ok,_} = file:copy(filename:join(DataDir,"authorized_keys"),
filename:join(UserDir,"authorized_keys")),
%% And copy the user's files used by the agent (and not by the user)
{ok,_} = file:copy(filename:join(DataDir,"id_rsa"),
filename:join(AgentUserDir,"id_rsa")),
Config;
init_per_testcase(_TestCase, Config) ->
Config.
end_per_testcase(_TestCase, _Config) ->
ok.
%% Test cases
%%% Request a list of identities
request_identities(_Config) ->
Request = #ssh_agent_identities_request{},
SocketPath =
ssh_agent_mock_server:respond(
<<?UINT32(41), % message length
?BYTE(12), % message type (1 byte)
?UINT32(2), % number of keys (4 bytes)
?STRING(<<"key-1">>), % key 1 blob (4 + 5 bytes)
?STRING(<<"lorem">>), % key 1 comment (4 + 5 bytes)
?STRING(<<"key-2">>), % key 2 blob (4 + 5 bytes)
?STRING(<<"ipsum">>) % key 2 comment (4 + 5 bytes)
>>
),
Opts = [{socket_path, SocketPath}],
Response = ssh_agent:send(Request, Opts),
#ssh_agent_identities_response{keys = Keys} = Response,
[{ssh_agent_key,<<"key-1">>,<<"lorem">>},
{ssh_agent_key,<<"key-2">>,<<"ipsum">>}] = Keys,
ok.
%%% Request a signature on a binary blob
sign_request(_Config) ->
PubKeyBlob = <<"key">>,
SigData = <<"data">>,
SignFlags = ?SSH_AGENT_RSA_SHA2_256 bor ?SSH_AGENT_RSA_SHA2_512,
SignRequest = #ssh_agent_sign_request{key_blob = PubKeyBlob, data = SigData, flags = SignFlags},
SocketPath =
ssh_agent_mock_server:respond(
<<?UINT32(29), % message length
?BYTE(14), % message type (1 byte)
?STRING(
<<?STRING(<<"ssh-rsa">>), % signature format (4 + 7 bytes)
?STRING(<<"signature">>) % signature blob (4 + 9 bytes)
>>
) % signature total (4 + 24 bytes)
>>
),
Opts = [{socket_path, SocketPath}],
SignResponse = ssh_agent:send(SignRequest, Opts),
#ssh_agent_sign_response{signature = #ssh_agent_signature{format = Format, blob = Sig}} = SignResponse,
Format = <<"ssh-rsa">>,
Sig = <<"signature">>,
ok.
%%% Connect with RSA key from SSH agent
connect_with_ssh_agent(Config) ->
UserDir = PrivDir = proplists:get_value(priv_dir, Config),
AgentUserDir = filename:join(UserDir,"agent"),
SystemDir = filename:join(PrivDir, "system"),
{ok, SocketPath} = ssh_agent_mock_server:start_link('rsa-sha2-256', AgentUserDir),
{Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
{user_dir, UserDir}]),
ConnectionRef = ssh_test_lib:connect(Host, Port, [{user_dir, UserDir},
{silently_accept_hosts, true},
{user_interaction, false},
{auth_methods, "publickey"},
{key_cb, {ssh_agent, [{socket_path, SocketPath}]}}
]),
ssh:close(ConnectionRef),
ssh:stop_daemon(Pid),
ssh_agent_mock_server:stop(SocketPath).
%%%================================================================
chk_unix_domain_socket(Config0) ->
case ssh_agent_mock_server:check_mktemp(Config0) of
{skip, Msg} ->
{skip, Msg};
Config ->
SocketPath = string:chomp(os:cmd("mktemp -u")),
case gen_tcp:listen(0, [local, {ip, {local,SocketPath}}]) of
{error,eafnosupport} ->
file:delete(SocketPath),
{skip, "Unix Domain Sockets are not supported"};
{ok, Socket} ->
ct:log("Socket = ~p", [Socket]),
gen_tcp:close(Socket),
file:delete(SocketPath),
Config
end
end.
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