1644050704

Committed 28 Jan 2025 07:35AM UTC coverage: 79.704% (-0.002%) from 79.706%

Build # 1644050704

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Commit Message

Merge pull request #1727 from jo-lund/4.0.x

4.0.x: fix: Clear the inventory data hash on re-authentication

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3 of 10 new or added lines in 3 files covered. (30.0%)

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74.77

/src/api/auth/auth.cpp

// Copyright 2023 Northern.tech AS
//
//    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.

#include <api/auth.hpp>

#include <mutex>
#include <string>
#include <vector>

#include <common/common.hpp>
#include <common/crypto.hpp>
#include <common/json.hpp>
#include <common/error.hpp>
#include <common/log.hpp>
#include <common/path.hpp>
#include <common/expected.hpp>
#include <common/identity_parser.hpp>
#include <common/optional.hpp>

namespace mender {
namespace api {
namespace auth {


using namespace std;
namespace error = mender::common::error;
namespace common = mender::common;
namespace conf = mender::common::conf;


namespace identity_parser = mender::common::identity_parser;
namespace key_value_parser = mender::common::key_value_parser;
namespace path = mender::common::path;
namespace mlog = mender::common::log;
namespace expected = mender::common::expected;
namespace io = mender::common::io;
namespace json = mender::common::json;
namespace crypto = mender::common::crypto;


const string request_uri = "/api/devices/v1/authentication/auth_requests";

const AuthClientErrorCategoryClass AuthClientErrorCategory;

const char *AuthClientErrorCategoryClass::name() const noexcept {
        return "AuthClientErrorCategory";
}

string AuthClientErrorCategoryClass::message(int code) const {
        switch (code) {
        case NoError:
                return "Success";
        case SetupError:
                return "Error during setup";
        case RequestError:
                return "HTTP client request error";
        case ResponseError:
                return "HTTP client response error";
        case APIError:
                return "API error";
        case UnauthorizedError:
                return "Unauthorized error";
        case AuthenticationError:
                return "Authentication error";
        default:
                return "Unknown";
        }
}

error::Error MakeError(AuthClientErrorCode code, const string &msg) {
        return error::Error(error_condition(code, AuthClientErrorCategory), msg);
}

namespace http {

error::Error MakeHTTPResponseError(
        const AuthClientErrorCode code,
        const mender::http::ResponsePtr resp,
        const string &response_body,
        const string &msg) {
        return error::Error(
                error_condition(code, AuthClientErrorCategory),
                "Authentication error(" + resp->GetStatusMessage() + "): " + msg + "(" + response_body
                        + ")");
}

static void TryAuthenticate(
        vector<string>::const_iterator server_it,
        vector<string>::const_iterator end,
        mender::http::Client &client,
        const string request_body,
        const string signature,
        APIResponseHandler api_handler);

error::Error FetchJWTToken(
        mender::http::Client &client,
        const vector<string> &servers,
        const crypto::Args &crypto_args,
        const string &device_identity_script_path,
        APIResponseHandler api_handler,
        const string &tenant_token) {
        key_value_parser::ExpectedKeyValuesMap expected_identity_data =
                identity_parser::GetIdentityData(device_identity_script_path);
        if (!expected_identity_data) {
                return expected_identity_data.error();
        }

        auto identity_data_json = identity_parser::DumpIdentityData(expected_identity_data.value());
        mlog::Debug("Got identity data: " + identity_data_json);

        // Create the request body
        unordered_map<string, string> request_body_map {
                {"id_data", identity_data_json},
        };

        if (tenant_token.size() > 0) {
                request_body_map.insert({"tenant_token", tenant_token});
        }

        auto expected_public_key = crypto::ExtractPublicKey(crypto_args);
        if (!expected_public_key) {
                return expected_public_key.error();
        }
        request_body_map.insert({"pubkey", expected_public_key.value()});

        auto expected_request_body = json::Dump(request_body_map);
        if (!expected_request_body) {
                return expected_request_body.error();
        }
        auto request_body = expected_request_body.value();

        // Sign the body
        auto expected_signature = crypto::Sign(crypto_args, common::ByteVectorFromString(request_body));
        if (!expected_signature) {
                return expected_signature.error();
        }
        auto signature = expected_signature.value();

        // TryAuthenticate() calls the handler on any potential further errors, we
        // are done here with no errors.
        TryAuthenticate(servers.cbegin(), servers.cend(), client, request_body, signature, api_handler);
        return error::NoError;
}

static void TryAuthenticate(
        vector<string>::const_iterator server_it,
        vector<string>::const_iterator end,
        mender::http::Client &client,
        const string request_body,
        const string signature,
        APIResponseHandler api_handler) {
        if (server_it == end) {
                auto err = MakeError(AuthenticationError, "No more servers to try for authentication");
                api_handler(expected::unexpected(err));
                return;
        }

        auto whole_url = mender::http::JoinUrl(*server_it, request_uri);
        auto req = make_shared<mender::http::OutgoingRequest>();
        req->SetMethod(mender::http::Method::POST);
        req->SetAddress(whole_url);
        req->SetHeader("Content-Type", "application/json");
        req->SetHeader("Content-Length", to_string(request_body.size()));
        req->SetHeader("Accept", "application/json");
        req->SetHeader("X-MEN-Signature", signature);
        req->SetHeader("Authorization", "API_KEY");

        req->SetBodyGenerator([request_body]() -> io::ExpectedReaderPtr {
                return make_shared<io::StringReader>(request_body);
        });

        auto received_body = make_shared<vector<uint8_t>>();

        auto err = client.AsyncCall(
                req,
                [received_body, server_it, end, &client, request_body, signature, api_handler](
                        mender::http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                mlog::Info(
                                        "Authentication error trying server '" + *server_it
                                        + "': " + exp_resp.error().String());
                                TryAuthenticate(
                                        std::next(server_it), end, client, request_body, signature, api_handler);
                                return;
                        }
                        auto resp = exp_resp.value();

                        auto body_writer = make_shared<io::ByteWriter>(received_body);
                        body_writer->SetUnlimited(true);
                        resp->SetBodyWriter(body_writer);

                        mlog::Debug("Received response header value:");
                        mlog::Debug("Status code:" + to_string(resp->GetStatusCode()));
                        mlog::Debug("Status message: " + resp->GetStatusMessage());
                },
                [received_body, server_it, end, &client, request_body, signature, api_handler](
                        mender::http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                mlog::Info(
                                        "Authentication error trying server '" + *server_it
                                        + "': " + exp_resp.error().String());
                                TryAuthenticate(
                                        std::next(server_it), end, client, request_body, signature, api_handler);
                                return;
                        }
                        auto resp = exp_resp.value();

                        string response_body = common::StringFromByteVector(*received_body);

                        error::Error err;
                        switch (resp->GetStatusCode()) {
                        case mender::http::StatusOK:
                                api_handler(AuthData {*server_it, response_body});
                                return;
                        case mender::http::StatusUnauthorized:
                                err = MakeHTTPResponseError(
                                        UnauthorizedError, resp, response_body, "Failed to authorize with the server.");
                                mlog::Info(
                                        "Authentication error trying server '" + *server_it + "': " + err.String());
                                TryAuthenticate(
                                        std::next(server_it), end, client, request_body, signature, api_handler);
                                return;
                        case mender::http::StatusBadRequest:
                        case mender::http::StatusInternalServerError:
                                err = MakeHTTPResponseError(
                                        APIError, resp, response_body, "Failed to authorize with the server.");
                                mlog::Info(
                                        "Authentication error trying server '" + *server_it + "': " + err.String());
                                TryAuthenticate(
                                        std::next(server_it), end, client, request_body, signature, api_handler);
                                return;
                        default:
                                err =
                                        MakeError(ResponseError, "Unexpected error code: " + resp->GetStatusMessage());
                                mlog::Info(
                                        "Authentication error trying server '" + *server_it + "': " + err.String());
                                TryAuthenticate(
                                        std::next(server_it), end, client, request_body, signature, api_handler);
                                return;
                        }
                });
        if (err != error::NoError) {
                api_handler(expected::unexpected(err));
        }
}
} // namespace http

error::Error FetchJWTToken(
        mender::http::Client &client,
        const vector<string> &servers,
        const crypto::Args &crypto_args,
        const string &device_identity_script_path,
        APIResponseHandler api_handler,
        const string &tenant_token) {
        return http::FetchJWTToken(
                client, servers, crypto_args, device_identity_script_path, api_handler, tenant_token);
}

void Authenticator::ExpireToken() {
        if (!token_fetch_in_progress_) {
                RequestNewToken(nullopt);
        }
}

error::Error Authenticator::StartWatchingTokenSignal() {
        auto err = dbus_client_.RegisterSignalHandler<dbus::ExpectedStringPair>(
                "io.mender.Authentication1",
                "JwtTokenStateChange",
                [this](dbus::ExpectedStringPair ex_auth_dbus_data) {
                        auth_timeout_timer_.Cancel();
                        token_fetch_in_progress_ = false;
                        ExpectedAuthData ex_auth_data;
                        if (!ex_auth_dbus_data) {
                                mlog::Error(
                                        "Error from the JwtTokenStateChange DBus signal: "
                                        + ex_auth_dbus_data.error().String());
                                ex_auth_data = ExpectedAuthData(expected::unexpected(ex_auth_dbus_data.error()));
                        } else {
                                auto &token = ex_auth_dbus_data.value().first;
                                auto &server_url = ex_auth_dbus_data.value().second;

                                mlog::Debug("Got new authentication token for server " + server_url);

                                AuthData auth_data {server_url, token};
                                ex_auth_data = ExpectedAuthData(std::move(auth_data));
                                if (action_ != nullptr) {
                                        action_();
                                }
                        }
                        PostPendingActions(ex_auth_data);
                });

        watching_token_signal_ = (err == error::NoError);
        return err;
}

void Authenticator::PostPendingActions(ExpectedAuthData &ex_auth_data) {
        for (auto action : pending_actions_) {
                loop_.Post([action, ex_auth_data]() { action(ex_auth_data); });
        }
        pending_actions_.clear();
}

error::Error Authenticator::RequestNewToken(optional<AuthenticatedAction> opt_action) {
        if (token_fetch_in_progress_) {
                // Just make sure the action (if any) is called once the token is
                // obtained.
                if (opt_action) {
                        pending_actions_.push_back(*opt_action);
                }
                return error::NoError;
        }

        auto err = dbus_client_.CallMethod<expected::ExpectedBool>(
                "io.mender.AuthenticationManager",
                "/io/mender/AuthenticationManager",
                "io.mender.Authentication1",
                "FetchJwtToken",
                [this](expected::ExpectedBool ex_value) {
                        if (!ex_value) {
                                token_fetch_in_progress_ = false;
                                mlog::Error("Failed to request new token fetching: " + ex_value.error().String());
                                ExpectedAuthData ex_auth_data = expected::unexpected(ex_value.error());
                                PostPendingActions(ex_auth_data);
                        } else if (!ex_value.value()) {
                                // mender-auth encountered an error not sent over DBus (should never happen)
                                token_fetch_in_progress_ = false;
                                mlog::Error(
                                        "Failed to request new token fetching (see mender-auth logs for details)");
                                ExpectedAuthData ex_auth_data = expected::unexpected(MakeError(
                                        AuthenticationError, "Failed to request new token fetching from mender-auth"));
                                PostPendingActions(ex_auth_data);
                        }
                });
        if (err != error::NoError) {
                // A sync DBus error.
                mlog::Error("Failed to request new token fetching: " + err.String());
                token_fetch_in_progress_ = false;
                ExpectedAuthData ex_auth_data = expected::unexpected(err);
                PostPendingActions(ex_auth_data);
                if (opt_action) {
                        (*opt_action)(ex_auth_data);
                }
                return err;
        }
        // else everything went OK

        token_fetch_in_progress_ = true;

        // Make sure the action (if any) is called once the token is
        // obtained.
        if (opt_action) {
                pending_actions_.push_back(*opt_action);
        }

        // Make sure we don't wait for the token forever.
        auth_timeout_timer_.AsyncWait(auth_timeout_, [this](error::Error err) {
                if (err.code == make_error_condition(errc::operation_canceled)) {
                        return;
                } else if (err == error::NoError) {
                        mlog::Warning("Timed-out waiting for a new token");
                        token_fetch_in_progress_ = false;
                        ExpectedAuthData ex_auth_data = expected::unexpected(
                                MakeError(AuthenticationError, "Timed-out waiting for a new token"));
                        PostPendingActions(ex_auth_data);
                } else {
                        // should never happen
                        assert(false);
                        mlog::Error("Authentication timer error: " + err.String());

                        // In case it did happen, run the stacked up actions and unset the
                        // in_progress_ flag or things may got stuck.
                        token_fetch_in_progress_ = false;
                        ExpectedAuthData ex_auth_data = expected::unexpected(err);
                        PostPendingActions(ex_auth_data);
                }
        });
        return error::NoError;
}

error::Error Authenticator::WithToken(AuthenticatedAction action) {
        if (!watching_token_signal_) {
                auto err = StartWatchingTokenSignal();
                if (err != error::NoError) {
                        // Should never fail. We rely on the signal heavily so let's fail
                        // hard if it does.
                        return err;
                }
        }

        if (token_fetch_in_progress_) {
                // Already waiting for a new token, just make sure the action is called
                // once it arrives (or once the wait times out).
                pending_actions_.push_back(action);
                return error::NoError;
        }
        // else => should fetch the token, cache it and call all pending actions
        // Try to get token from mender-auth
        auto err = dbus_client_.CallMethod<dbus::ExpectedStringPair>(
                "io.mender.AuthenticationManager",
                "/io/mender/AuthenticationManager",
                "io.mender.Authentication1",
                "GetJwtToken",
                [this, action](dbus::ExpectedStringPair ex_auth_dbus_data) {
                        token_fetch_in_progress_ = false;
                        auth_timeout_timer_.Cancel();
                        if (ex_auth_dbus_data && (ex_auth_dbus_data.value().first != "")
                                && (ex_auth_dbus_data.value().second != "")) {
                                // Got a valid token, let's save it and then call action and any
                                // previously-pending actions (if any) with it.
                                auto &token = ex_auth_dbus_data.value().first;
                                auto &server_url = ex_auth_dbus_data.value().second;
                                AuthData auth_data {server_url, token};

                                mlog::Debug("Got authentication token for server " + server_url);

                                // Post/schedule pending actions before running the given action
                                // because the action can actually add more actions or even
                                // expire the token, etc. So post actions stacked up before we
                                // got here with the current token and only then give action a
                                // chance to mess with things.
                                ExpectedAuthData ex_auth_data {std::move(auth_data)};
                                PostPendingActions(ex_auth_data);
                                action(ex_auth_data);
                        } else {
                                // No valid token, let's request fetching of a new one
                                RequestNewToken(action);
                        }
                });
        if (err != error::NoError) {
                // No token and failed to try to get one (should never happen).
                ExpectedAuthData ex_auth_data = expected::unexpected(err);
                PostPendingActions(ex_auth_data);
                return err;
        }
        // else record that token is already being fetched (by GetJwtToken()).
        token_fetch_in_progress_ = true;
        return error::NoError;
}
} // namespace auth
} // namespace api
} // namespace mender

1	// Copyright 2023 Northern.tech AS
2	//
3	// Licensed under the Apache License, Version 2.0 (the "License");
4	// you may not use this file except in compliance with the License.
5	// You may obtain a copy of the License at
6	//
7	// http://www.apache.org/licenses/LICENSE-2.0
8	//
9	// Unless required by applicable law or agreed to in writing, software
10	// distributed under the License is distributed on an "AS IS" BASIS,
11	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12	// See the License for the specific language governing permissions and
13	// limitations under the License.
14
15	#include <api/auth.hpp>
16
17	#include <mutex>
18	#include <string>
19	#include <vector>
20
21	#include <common/common.hpp>
22	#include <common/crypto.hpp>
23	#include <common/json.hpp>
24	#include <common/error.hpp>
25	#include <common/log.hpp>
26	#include <common/path.hpp>
27	#include <common/expected.hpp>
28	#include <common/identity_parser.hpp>
29	#include <common/optional.hpp>
30
31	namespace mender {
32	namespace api {
33	namespace auth {
34
35
36	using namespace std;
37	namespace error = mender::common::error;
38	namespace common = mender::common;
39	namespace conf = mender::common::conf;
40
41
42	namespace identity_parser = mender::common::identity_parser;
43	namespace key_value_parser = mender::common::key_value_parser;
44	namespace path = mender::common::path;
45	namespace mlog = mender::common::log;
46	namespace expected = mender::common::expected;
47	namespace io = mender::common::io;
48	namespace json = mender::common::json;
49	namespace crypto = mender::common::crypto;
50
51
52	const string request_uri = "/api/devices/v1/authentication/auth_requests";
53
54	const AuthClientErrorCategoryClass AuthClientErrorCategory;
55
56	const char *AuthClientErrorCategoryClass::name() const noexcept {	×
57	return "AuthClientErrorCategory";	×
58	}
59
60	string AuthClientErrorCategoryClass::message(int code) const {	4✔
61	switch (code) {	4✔
62	case NoError:
63	return "Success";	×
64	case SetupError:
65	return "Error during setup";	×
66	case RequestError:
67	return "HTTP client request error";	×
68	case ResponseError:
69	return "HTTP client response error";	×
70	case APIError:
71	return "API error";	2✔
72	case UnauthorizedError:
73	return "Unauthorized error";	×
74	case AuthenticationError:
75	return "Authentication error";	2✔
76	default:
77	return "Unknown";	×
78	}
79	}
80
81	error::Error MakeError(AuthClientErrorCode code, const string &msg) {	3✔
82	return error::Error(error_condition(code, AuthClientErrorCategory), msg);	6✔
83	}
84
85	namespace http {
86
87	error::Error MakeHTTPResponseError(	2✔
88	const AuthClientErrorCode code,
89	const mender::http::ResponsePtr resp,
90	const string &response_body,
91	const string &msg) {
92	return error::Error(
93	error_condition(code, AuthClientErrorCategory),	2✔
94	"Authentication error(" + resp->GetStatusMessage() + "): " + msg + "(" + response_body	4✔
95	+ ")");	6✔
96	}
97
98	static void TryAuthenticate(
99	vector<string>::const_iterator server_it,
100	vector<string>::const_iterator end,
101	mender::http::Client &client,
102	const string request_body,
103	const string signature,
104	APIResponseHandler api_handler);
105
106	error::Error FetchJWTToken(	6✔
107	mender::http::Client &client,
108	const vector<string> &servers,
109	const crypto::Args &crypto_args,
110	const string &device_identity_script_path,
111	APIResponseHandler api_handler,
112	const string &tenant_token) {
113	key_value_parser::ExpectedKeyValuesMap expected_identity_data =
114	identity_parser::GetIdentityData(device_identity_script_path);	6✔
115	if (!expected_identity_data) {	6✔
116	return expected_identity_data.error();	×
117	}
118
119	auto identity_data_json = identity_parser::DumpIdentityData(expected_identity_data.value());	6✔
120	mlog::Debug("Got identity data: " + identity_data_json);	12✔
121
122	// Create the request body
123	unordered_map<string, string> request_body_map {
124	{"id_data", identity_data_json},
125	};	18✔
126
127	if (tenant_token.size() > 0) {	6✔
128	request_body_map.insert({"tenant_token", tenant_token});	4✔
129	}
130
131	auto expected_public_key = crypto::ExtractPublicKey(crypto_args);	6✔
132	if (!expected_public_key) {	6✔
133	return expected_public_key.error();	×
134	}
135	request_body_map.insert({"pubkey", expected_public_key.value()});	12✔
136
137	auto expected_request_body = json::Dump(request_body_map);	12✔
138	if (!expected_request_body) {	6✔
139	return expected_request_body.error();	×
140	}
141	auto request_body = expected_request_body.value();	6✔
142
143	// Sign the body
144	auto expected_signature = crypto::Sign(crypto_args, common::ByteVectorFromString(request_body));	12✔
145	if (!expected_signature) {	6✔
146	return expected_signature.error();	×
147	}
148	auto signature = expected_signature.value();	6✔
149
150	// TryAuthenticate() calls the handler on any potential further errors, we
151	// are done here with no errors.
152	TryAuthenticate(servers.cbegin(), servers.cend(), client, request_body, signature, api_handler);	12✔
153	return error::NoError;	6✔
154	}
155
156	static void TryAuthenticate(	10✔
157	vector<string>::const_iterator server_it,
158	vector<string>::const_iterator end,
159	mender::http::Client &client,
160	const string request_body,
161	const string signature,
162	APIResponseHandler api_handler) {
163	if (server_it == end) {	10✔
164	auto err = MakeError(AuthenticationError, "No more servers to try for authentication");	2✔
165	api_handler(expected::unexpected(err));	2✔
166	return;
167	}
168
169	auto whole_url = mender::http::JoinUrl(*server_it, request_uri);	9✔
170	auto req = make_shared<mender::http::OutgoingRequest>();	9✔
171	req->SetMethod(mender::http::Method::POST);	9✔
172	req->SetAddress(whole_url);	18✔
173	req->SetHeader("Content-Type", "application/json");	18✔
174	req->SetHeader("Content-Length", to_string(request_body.size()));	18✔
175	req->SetHeader("Accept", "application/json");	18✔
176	req->SetHeader("X-MEN-Signature", signature);	18✔
177	req->SetHeader("Authorization", "API_KEY");	18✔
178
179	req->SetBodyGenerator([request_body]() -> io::ExpectedReaderPtr {	45✔
180	return make_shared<io::StringReader>(request_body);	7✔
181	});	18✔
182
183	auto received_body = make_shared<vector<uint8_t>>();	9✔
184
185	auto err = client.AsyncCall(
186	req,
187	[received_body, server_it, end, &client, request_body, signature, api_handler](	9✔
188	mender::http::ExpectedIncomingResponsePtr exp_resp) {	2✔
189	if (!exp_resp) {	9✔
190	mlog::Info(	2✔
191	"Authentication error trying server '" + *server_it	4✔
192	+ "': " + exp_resp.error().String());	6✔
193	TryAuthenticate(	2✔
194	std::next(server_it), end, client, request_body, signature, api_handler);	4✔
195	return;	2✔
196	}
197	auto resp = exp_resp.value();	7✔
198
199	auto body_writer = make_shared<io::ByteWriter>(received_body);	7✔
200	body_writer->SetUnlimited(true);	7✔
201	resp->SetBodyWriter(body_writer);	7✔
202
203	mlog::Debug("Received response header value:");	14✔
204	mlog::Debug("Status code:" + to_string(resp->GetStatusCode()));	14✔
205	mlog::Debug("Status message: " + resp->GetStatusMessage());	14✔
206	},
207	[received_body, server_it, end, &client, request_body, signature, api_handler](	7✔
208	mender::http::ExpectedIncomingResponsePtr exp_resp) {	2✔
209	if (!exp_resp) {	7✔
210	mlog::Info(	×
211	"Authentication error trying server '" + *server_it	×
212	+ "': " + exp_resp.error().String());	×
213	TryAuthenticate(	×
214	std::next(server_it), end, client, request_body, signature, api_handler);	×
215	return;	×
216	}
217	auto resp = exp_resp.value();	7✔
218
219	string response_body = common::StringFromByteVector(*received_body);	7✔
220
221	error::Error err;	7✔
222	switch (resp->GetStatusCode()) {	7✔
223	case mender::http::StatusOK:	5✔
224	api_handler(AuthData {*server_it, response_body});	15✔
225	return;	5✔
226	case mender::http::StatusUnauthorized:
227	err = MakeHTTPResponseError(	×
228	UnauthorizedError, resp, response_body, "Failed to authorize with the server.");	×
229	mlog::Info(	×
230	"Authentication error trying server '" + *server_it + "': " + err.String());	×
231	TryAuthenticate(	×
232	std::next(server_it), end, client, request_body, signature, api_handler);	×
233	return;	×
234	case mender::http::StatusBadRequest:
235	case mender::http::StatusInternalServerError:
236	err = MakeHTTPResponseError(	2✔
237	APIError, resp, response_body, "Failed to authorize with the server.");	6✔
238	mlog::Info(	2✔
239	"Authentication error trying server '" + *server_it + "': " + err.String());	4✔
240	TryAuthenticate(	2✔
241	std::next(server_it), end, client, request_body, signature, api_handler);	4✔
242	return;	2✔
243	default:
244	err =
245	MakeError(ResponseError, "Unexpected error code: " + resp->GetStatusMessage());	×
246	mlog::Info(	×
247	"Authentication error trying server '" + *server_it + "': " + err.String());	×
248	TryAuthenticate(	×
249	std::next(server_it), end, client, request_body, signature, api_handler);	×
250	return;	×
251	}
252	});	36✔
253	if (err != error::NoError) {	9✔
254	api_handler(expected::unexpected(err));	×
255	}
256	}
257	} // namespace http
258
259	error::Error FetchJWTToken(	6✔
260	mender::http::Client &client,
261	const vector<string> &servers,
262	const crypto::Args &crypto_args,
263	const string &device_identity_script_path,
264	APIResponseHandler api_handler,
265	const string &tenant_token) {
266	return http::FetchJWTToken(
267	client, servers, crypto_args, device_identity_script_path, api_handler, tenant_token);	12✔
268	}
269
270	void Authenticator::ExpireToken() {	28✔
271	if (!token_fetch_in_progress_) {	28✔
272	RequestNewToken(nullopt);	56✔
273	}
274	}	28✔
275
276	error::Error Authenticator::StartWatchingTokenSignal() {	12✔
277	auto err = dbus_client_.RegisterSignalHandler<dbus::ExpectedStringPair>(
278	"io.mender.Authentication1",
279	"JwtTokenStateChange",
280	[this](dbus::ExpectedStringPair ex_auth_dbus_data) {	16✔
281	auth_timeout_timer_.Cancel();	4✔
282	token_fetch_in_progress_ = false;	4✔
283	ExpectedAuthData ex_auth_data;
284	if (!ex_auth_dbus_data) {	4✔
285	mlog::Error(	×
286	"Error from the JwtTokenStateChange DBus signal: "
287	+ ex_auth_dbus_data.error().String());	×
288	ex_auth_data = ExpectedAuthData(expected::unexpected(ex_auth_dbus_data.error()));	×
289	} else {
290	auto &token = ex_auth_dbus_data.value().first;	4✔
291	auto &server_url = ex_auth_dbus_data.value().second;	4✔
292
293	mlog::Debug("Got new authentication token for server " + server_url);	4✔
294
295	AuthData auth_data {server_url, token};	8✔
296	ex_auth_data = ExpectedAuthData(std::move(auth_data));	4✔
297	if (action_ != nullptr) {	4✔
NEW 298	action_();	×
299	}
300	}
301	PostPendingActions(ex_auth_data);	4✔
302	});	28✔
303
304	watching_token_signal_ = (err == error::NoError);	12✔
305	return err;	12✔
306	}
307
308	void Authenticator::PostPendingActions(ExpectedAuthData &ex_auth_data) {	43✔
309	for (auto action : pending_actions_) {	51✔
310	loop_.Post([action, ex_auth_data]() { action(ex_auth_data); });	40✔
311	}
312	pending_actions_.clear();	43✔
313	}	43✔
314
315	error::Error Authenticator::RequestNewToken(optional<AuthenticatedAction> opt_action) {	30✔
316	if (token_fetch_in_progress_) {	30✔
317	// Just make sure the action (if any) is called once the token is
318	// obtained.
319	if (opt_action) {	×
320	pending_actions_.push_back(*opt_action);	×
321	}
322	return error::NoError;	×
323	}
324
325	auto err = dbus_client_.CallMethod<expected::ExpectedBool>(
326	"io.mender.AuthenticationManager",
327	"/io/mender/AuthenticationManager",
328	"io.mender.Authentication1",
329	"FetchJwtToken",
330	[this](expected::ExpectedBool ex_value) {	7✔
331	if (!ex_value) {	7✔
332	token_fetch_in_progress_ = false;	1✔
333	mlog::Error("Failed to request new token fetching: " + ex_value.error().String());	2✔
334	ExpectedAuthData ex_auth_data = expected::unexpected(ex_value.error());	1✔
335	PostPendingActions(ex_auth_data);	1✔
336	} else if (!ex_value.value()) {	6✔
337	// mender-auth encountered an error not sent over DBus (should never happen)
338	token_fetch_in_progress_ = false;	×
339	mlog::Error(	×
340	"Failed to request new token fetching (see mender-auth logs for details)");	×
341	ExpectedAuthData ex_auth_data = expected::unexpected(MakeError(	×
342	AuthenticationError, "Failed to request new token fetching from mender-auth"));	×
343	PostPendingActions(ex_auth_data);	×
344	}
345	});	67✔
346	if (err != error::NoError) {	30✔
347	// A sync DBus error.
348	mlog::Error("Failed to request new token fetching: " + err.String());	46✔
349	token_fetch_in_progress_ = false;	23✔
350	ExpectedAuthData ex_auth_data = expected::unexpected(err);	23✔
351	PostPendingActions(ex_auth_data);	23✔
352	if (opt_action) {	23✔
353	(*opt_action)(ex_auth_data);	×
354	}
355	return err;	23✔
356	}
357	// else everything went OK
358
359	token_fetch_in_progress_ = true;	7✔
360
361	// Make sure the action (if any) is called once the token is
362	// obtained.
363	if (opt_action) {	7✔
364	pending_actions_.push_back(*opt_action);	2✔
365	}
366
367	// Make sure we don't wait for the token forever.
368	auth_timeout_timer_.AsyncWait(auth_timeout_, [this](error::Error err) {	7✔
369	if (err.code == make_error_condition(errc::operation_canceled)) {	6✔
370	return;
371	} else if (err == error::NoError) {	2✔
372	mlog::Warning("Timed-out waiting for a new token");	4✔
373	token_fetch_in_progress_ = false;	2✔
374	ExpectedAuthData ex_auth_data = expected::unexpected(	2✔
375	MakeError(AuthenticationError, "Timed-out waiting for a new token"));	6✔
376	PostPendingActions(ex_auth_data);	2✔
377	} else {
378	// should never happen
379	assert(false);
380	mlog::Error("Authentication timer error: " + err.String());	×
381
382	// In case it did happen, run the stacked up actions and unset the
383	// in_progress_ flag or things may got stuck.
384	token_fetch_in_progress_ = false;	×
385	ExpectedAuthData ex_auth_data = expected::unexpected(err);	×
386	PostPendingActions(ex_auth_data);	×
387	}
388	});	×
389	return error::NoError;	7✔
390	}
391
392	error::Error Authenticator::WithToken(AuthenticatedAction action) {	22✔
393	if (!watching_token_signal_) {	22✔
394	auto err = StartWatchingTokenSignal();	12✔
395	if (err != error::NoError) {	12✔
396	// Should never fail. We rely on the signal heavily so let's fail
397	// hard if it does.
398	return err;	1✔
399	}
400	}
401
402	if (token_fetch_in_progress_) {	21✔
403	// Already waiting for a new token, just make sure the action is called
404	// once it arrives (or once the wait times out).
405	pending_actions_.push_back(action);	6✔
406	return error::NoError;	6✔
407	}
408	// else => should fetch the token, cache it and call all pending actions
409	// Try to get token from mender-auth
410	auto err = dbus_client_.CallMethod<dbus::ExpectedStringPair>(
411	"io.mender.AuthenticationManager",
412	"/io/mender/AuthenticationManager",
413	"io.mender.Authentication1",
414	"GetJwtToken",
415	[this, action](dbus::ExpectedStringPair ex_auth_dbus_data) {	30✔
416	token_fetch_in_progress_ = false;	15✔
417	auth_timeout_timer_.Cancel();	15✔
418	if (ex_auth_dbus_data && (ex_auth_dbus_data.value().first != "")	14✔
419	&& (ex_auth_dbus_data.value().second != "")) {	28✔
420	// Got a valid token, let's save it and then call action and any
421	// previously-pending actions (if any) with it.
422	auto &token = ex_auth_dbus_data.value().first;	13✔
423	auto &server_url = ex_auth_dbus_data.value().second;	13✔
424	AuthData auth_data {server_url, token};	26✔
425
426	mlog::Debug("Got authentication token for server " + server_url);	26✔
427
428	// Post/schedule pending actions before running the given action
429	// because the action can actually add more actions or even
430	// expire the token, etc. So post actions stacked up before we
431	// got here with the current token and only then give action a
432	// chance to mess with things.
433	ExpectedAuthData ex_auth_data {std::move(auth_data)};
434	PostPendingActions(ex_auth_data);	13✔
435	action(ex_auth_data);	26✔
436	} else {
437	// No valid token, let's request fetching of a new one
438	RequestNewToken(action);	4✔
439	}
440	});	45✔
441	if (err != error::NoError) {	15✔
442	// No token and failed to try to get one (should never happen).
443	ExpectedAuthData ex_auth_data = expected::unexpected(err);	×
444	PostPendingActions(ex_auth_data);	×
445	return err;	×
446	}
447	// else record that token is already being fetched (by GetJwtToken()).
448	token_fetch_in_progress_ = true;	15✔
449	return error::NoError;	15✔
450	}
451	} // namespace auth
452	} // namespace api
453	} // namespace mender

mendersoftware / mender / 1644050704

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