1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/updater/device_management/dm_message.h"
#include <memory>
#include <utility>
#include "base/containers/contains.h"
#include "base/containers/fixed_flat_map.h"
#include "base/logging.h"
#include "base/notreached.h"
#include "chrome/enterprise_companion/device_management_storage/dm_storage.h"
#include "chrome/updater/device_management/dm_response_validator.h"
#include "components/policy/core/common/cloud/cloud_policy_constants.h"
#include "components/policy/core/common/cloud/cloud_policy_util.h"
#include "components/policy/core/common/policy_types.h"
#include "components/policy/proto/device_management_backend.pb.h"
namespace updater {
namespace {
enterprise_management::PolicyValidationReportRequest::ValidationResultType
TranslatePolicyValidationResultStatus(PolicyValidationResult::Status status) {
using Report = enterprise_management::PolicyValidationReportRequest;
static constexpr auto kValidationStatusMap = base::MakeFixedFlatMap<
PolicyValidationResult::Status, Report::ValidationResultType>({
{PolicyValidationResult::Status::kValidationOK,
Report::VALIDATION_RESULT_TYPE_SUCCESS},
{PolicyValidationResult::Status::kValidationBadInitialSignature,
Report::VALIDATION_RESULT_TYPE_BAD_INITIAL_SIGNATURE},
{PolicyValidationResult::Status::kValidationBadSignature,
Report::VALIDATION_RESULT_TYPE_BAD_SIGNATURE},
{PolicyValidationResult::Status::kValidationErrorCodePresent,
Report::VALIDATION_RESULT_TYPE_ERROR_CODE_PRESENT},
{PolicyValidationResult::Status::kValidationPayloadParseError,
Report::VALIDATION_RESULT_TYPE_PAYLOAD_PARSE_ERROR},
{PolicyValidationResult::Status::kValidationWrongPolicyType,
Report::VALIDATION_RESULT_TYPE_WRONG_POLICY_TYPE},
{PolicyValidationResult::Status::kValidationWrongSettingsEntityID,
Report::VALIDATION_RESULT_TYPE_WRONG_SETTINGS_ENTITY_ID},
{PolicyValidationResult::Status::kValidationBadTimestamp,
Report::VALIDATION_RESULT_TYPE_BAD_TIMESTAMP},
{PolicyValidationResult::Status::kValidationBadDMToken,
Report::VALIDATION_RESULT_TYPE_BAD_DM_TOKEN},
{PolicyValidationResult::Status::kValidationBadDeviceID,
Report::VALIDATION_RESULT_TYPE_BAD_DEVICE_ID},
{PolicyValidationResult::Status::kValidationBadUser,
Report::VALIDATION_RESULT_TYPE_BAD_USER},
{PolicyValidationResult::Status::kValidationPolicyParseError,
Report::VALIDATION_RESULT_TYPE_POLICY_PARSE_ERROR},
{PolicyValidationResult::Status::kValidationBadKeyVerificationSignature,
Report::VALIDATION_RESULT_TYPE_BAD_KEY_VERIFICATION_SIGNATURE},
{PolicyValidationResult::Status::kValidationValueWarning,
Report::VALIDATION_RESULT_TYPE_VALUE_WARNING},
{PolicyValidationResult::Status::kValidationValueError,
Report::VALIDATION_RESULT_TYPE_VALUE_ERROR},
});
const auto mapped_status = kValidationStatusMap.find(status);
return mapped_status == kValidationStatusMap.end()
? Report::VALIDATION_RESULT_TYPE_ERROR_UNSPECIFIED
: mapped_status->second;
}
enterprise_management::PolicyValueValidationIssue::ValueValidationIssueSeverity
TranslatePolicyValidationResultSeverity(
PolicyValueValidationIssue::Severity severity) {
using Issue = enterprise_management::PolicyValueValidationIssue;
switch (severity) {
case PolicyValueValidationIssue::Severity::kWarning:
return Issue::VALUE_VALIDATION_ISSUE_SEVERITY_WARNING;
case PolicyValueValidationIssue::Severity::kError:
return Issue::VALUE_VALIDATION_ISSUE_SEVERITY_ERROR;
}
}
enterprise_management::DevicePolicyRequest::Reason TranslateFetchReason(
policy::PolicyFetchReason reason) {
using Request = enterprise_management::DevicePolicyRequest;
switch (reason) {
case policy::PolicyFetchReason::kUnspecified:
return Request::UNSPECIFIED;
case policy::PolicyFetchReason::kUserRequest:
return Request::USER_REQUEST;
case policy::PolicyFetchReason::kScheduled:
return Request::SCHEDULED;
case policy::PolicyFetchReason::kTest:
return Request::TEST;
default:
NOTREACHED();
}
}
} // namespace
std::string GetRegisterBrowserRequestData() {
enterprise_management::DeviceManagementRequest dm_request;
enterprise_management::RegisterBrowserRequest* request =
dm_request.mutable_register_browser_request();
request->set_machine_name(policy::GetMachineName());
request->set_os_platform(policy::GetOSPlatform());
request->set_os_version(policy::GetOSVersion());
request->set_allocated_browser_device_identifier(
policy::GetBrowserDeviceIdentifier().release());
return dm_request.SerializeAsString();
}
std::string GetPolicyFetchRequestData(
policy::PolicyFetchReason reason,
const std::string& policy_type,
const device_management_storage::CachedPolicyInfo& policy_info) {
enterprise_management::DeviceManagementRequest dm_request;
enterprise_management::DevicePolicyRequest* device_policy_request =
dm_request.mutable_policy_request();
device_policy_request->set_reason(TranslateFetchReason(reason));
enterprise_management::PolicyFetchRequest* policy_fetch_request =
device_policy_request->add_requests();
policy_fetch_request->set_policy_type(policy_type);
policy_fetch_request->set_signature_type(
enterprise_management::PolicyFetchRequest::SHA256_RSA);
policy_fetch_request->set_verification_key_hash(
policy::kPolicyVerificationKeyHash);
policy_fetch_request->set_allocated_browser_device_identifier(
policy::GetBrowserDeviceIdentifier().release());
if (policy_info.has_key_version()) {
policy_fetch_request->set_public_key_version(policy_info.key_version());
}
return dm_request.SerializeAsString();
}
std::string GetPolicyValidationReportRequestData(
const PolicyValidationResult& validation_result) {
PolicyValidationResult::Status aggregated_status = validation_result.status;
if (aggregated_status == PolicyValidationResult::Status::kValidationOK) {
for (const PolicyValueValidationIssue& issue : validation_result.issues) {
switch (issue.severity) {
case PolicyValueValidationIssue::Severity::kError:
aggregated_status =
PolicyValidationResult::Status::kValidationValueError;
break;
case PolicyValueValidationIssue::Severity::kWarning:
aggregated_status =
PolicyValidationResult::Status::kValidationValueWarning;
break;
}
}
}
if (aggregated_status == PolicyValidationResult::Status::kValidationOK) {
return std::string();
}
enterprise_management::DeviceManagementRequest dm_request;
enterprise_management::PolicyValidationReportRequest*
policy_validation_report_request =
dm_request.mutable_policy_validation_report_request();
policy_validation_report_request->set_validation_result_type(
TranslatePolicyValidationResultStatus(aggregated_status));
policy_validation_report_request->set_policy_type(
validation_result.policy_type);
policy_validation_report_request->set_policy_token(
validation_result.policy_token);
for (const PolicyValueValidationIssue& issue : validation_result.issues) {
enterprise_management::PolicyValueValidationIssue*
policy_value_validation_issue =
policy_validation_report_request
->add_policy_value_validation_issues();
policy_value_validation_issue->set_policy_name(issue.policy_name);
policy_value_validation_issue->set_severity(
TranslatePolicyValidationResultSeverity(issue.severity));
policy_value_validation_issue->set_debug_message(issue.message);
}
return dm_request.SerializeAsString();
}
std::string ParseDeviceRegistrationResponse(const std::string& response_data) {
enterprise_management::DeviceManagementResponse dm_response;
if (!dm_response.ParseFromString(response_data) ||
!dm_response.has_register_response() ||
!dm_response.register_response().has_device_management_token()) {
return std::string();
}
return dm_response.register_response().device_management_token();
}
bool ShouldDeleteDmToken(const std::string& response_data) {
enterprise_management::DeviceManagementResponse dm_response;
return dm_response.ParseFromString(response_data) &&
base::Contains(dm_response.error_detail(),
enterprise_management::
CBCM_DELETION_POLICY_PREFERENCE_DELETE_TOKEN);
}
DMPolicyMap ParsePolicyFetchResponse(
const std::string& response_data,
const device_management_storage::CachedPolicyInfo& policy_info,
const std::string& expected_dm_token,
const std::string& expected_device_id,
std::vector<PolicyValidationResult>& validation_results) {
enterprise_management::DeviceManagementResponse dm_response;
if (!dm_response.ParseFromString(response_data) ||
!dm_response.has_policy_response() ||
dm_response.policy_response().responses_size() == 0) {
return {};
}
DMResponseValidator validator(policy_info, expected_dm_token,
expected_device_id);
// Validate each individual policy and put valid ones into the returned policy
// map.
DMPolicyMap responses;
for (int i = 0; i < dm_response.policy_response().responses_size(); ++i) {
PolicyValidationResult validation_result;
const ::enterprise_management::PolicyFetchResponse& response =
dm_response.policy_response().responses(i);
if (!validator.ValidatePolicyResponse(response, validation_result)) {
VLOG(1) << "Policy " << validation_result.policy_type
<< " validation failed.";
validation_results.push_back(validation_result);
continue;
}
const std::string policy_type = validation_result.policy_type;
if (responses.find(policy_type) != responses.end()) {
VLOG(1) << "Duplicate PolicyFetchResponse for type " << policy_type;
continue;
}
std::string policy_fetch_response;
if (!response.SerializeToString(&policy_fetch_response)) {
VLOG(1) << "Failed to serialize policy " << policy_type;
continue;
}
responses.emplace(policy_type, std::move(policy_fetch_response));
}
return responses;
}
} // namespace updater
|
