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
content / browser / web_package / signed_exchange_reporter.cc [blame]
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/web_package/signed_exchange_reporter.h"
#include <string>
#include <utility>
#include "base/functional/callback.h"
#include "base/memory/ptr_util.h"
#include "content/browser/renderer_host/frame_tree_node.h"
#include "content/browser/web_package/signed_exchange_utils.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/storage_partition.h"
#include "net/base/ip_endpoint.h"
#include "services/network/public/mojom/network_context.mojom.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "url/origin.h"
namespace content {
namespace {
constexpr char kSXGResultOk[] = "ok";
constexpr char kSXGResultFailed[] = "sxg.failed";
constexpr char kSXGResultMiError[] = "sxg.mi_error";
constexpr char kSXGResultNonSecureDistributor[] = "sxg.non_secure_distributor";
constexpr char kSXGResultParseError[] = "sxg.parse_error";
constexpr char kSXGResultInvalidIntegrityHeader[] =
"sxg.invalid_integrity_header";
constexpr char kSXGResultSignatureVerificationError[] =
"sxg.signature_verification_error";
constexpr char kSXGResultCertVerificationError[] =
"sxg.cert_verification_error";
constexpr char kSXGResultCertFetchError[] = "sxg.cert_fetch_error";
constexpr char kSXGResultCertParseError[] = "sxg.cert_parse_error";
constexpr char kSXGResultVariantMismatch[] = "sxg.variant_mismatch";
constexpr char kSXGHeaderIntegrityMismatch[] = "sxg.header_integrity_mismatch";
constexpr char kSXGResultHadCookie[] = "sxg.had_cookie";
const char* GetResultTypeString(SignedExchangeLoadResult result) {
switch (result) {
case SignedExchangeLoadResult::kSuccess:
return kSXGResultOk;
case SignedExchangeLoadResult::kSXGServedFromNonHTTPS:
return kSXGResultNonSecureDistributor;
case SignedExchangeLoadResult::kFallbackURLParseError:
case SignedExchangeLoadResult::kVersionMismatch:
case SignedExchangeLoadResult::kHeaderParseError:
case SignedExchangeLoadResult::kSXGHeaderNetError:
return kSXGResultParseError;
case SignedExchangeLoadResult::kCertFetchError:
return kSXGResultCertFetchError;
case SignedExchangeLoadResult::kCertParseError:
return kSXGResultCertParseError;
case SignedExchangeLoadResult::kSignatureVerificationError:
return kSXGResultSignatureVerificationError;
case SignedExchangeLoadResult::kCertVerificationError:
return kSXGResultCertVerificationError;
case SignedExchangeLoadResult::kCTVerificationError:
return kSXGResultCertVerificationError;
case SignedExchangeLoadResult::kOCSPError:
return kSXGResultCertVerificationError;
case SignedExchangeLoadResult::kCertRequirementsNotMet:
case SignedExchangeLoadResult::kCertValidityPeriodTooLong:
return kSXGResultCertVerificationError;
case SignedExchangeLoadResult::kMerkleIntegrityError:
return kSXGResultMiError;
case SignedExchangeLoadResult::kSXGServedWithoutNosniff:
// TODO(crbug.com/40604536): Need to update the spec to send the report in
// this case.
return kSXGResultParseError;
case SignedExchangeLoadResult::kInvalidIntegrityHeader:
return kSXGResultInvalidIntegrityHeader;
case SignedExchangeLoadResult::kVariantMismatch:
// TODO(crbug.com/40604536): Need to update the spec to send the report in
// this case.
return kSXGResultVariantMismatch;
case SignedExchangeLoadResult::kHadCookieForCookielessOnlySXG:
// TODO(crbug.com/40604536): Need to update the spec to send the report in
// this case.
return kSXGResultHadCookie;
case SignedExchangeLoadResult::kPKPViolationError:
return kSXGResultCertVerificationError;
}
NOTREACHED_IN_MIGRATION();
return kSXGResultFailed;
}
bool IsCertRelatedErrorResult(const char* result_string) {
return result_string == kSXGResultSignatureVerificationError ||
result_string == kSXGResultCertVerificationError ||
result_string == kSXGResultCertFetchError ||
result_string == kSXGResultCertParseError;
}
// [spec text]
// - If report body’s "sxg"'s "cert_url"'s scheme is not "data" and report’s
// result is "signature_verification_error" or "cert_verification_error" or
// "cert_fetch_error" or "cert_parse_error":
// - If report’s outer request's url's origin is different from any origin
// of the URLs in report’s cert URL list, or report’s server IP is
// different from any of the IP address in report’s cert server IP list:
bool ShouldDowngradeReport(const char* result_string,
const network::mojom::SignedExchangeReport& report,
const net::IPAddress& cert_server_ip_address) {
if (report.cert_url.SchemeIs("data"))
return false;
if (!IsCertRelatedErrorResult(result_string))
return false;
if (url::Origin::Create(report.outer_url) !=
url::Origin::Create(report.cert_url)) {
return true;
}
if (!cert_server_ip_address.empty() &&
cert_server_ip_address != report.server_ip_address) {
return true;
}
return false;
}
void ReportResult(
FrameTreeNodeId frame_tree_node_id,
network::mojom::SignedExchangeReportPtr report,
const net::NetworkAnonymizationKey& network_anonymization_key) {
FrameTreeNode* frame_tree_node =
FrameTreeNode::GloballyFindByID(frame_tree_node_id);
if (!frame_tree_node)
return;
RenderFrameHostImpl* frame_host = frame_tree_node->current_frame_host();
if (!frame_host)
return;
SiteInstance* site_instance = frame_host->GetSiteInstance();
DCHECK(site_instance);
StoragePartition* partition =
frame_host->GetBrowserContext()->GetStoragePartition(site_instance);
DCHECK(partition);
partition->GetNetworkContext()->QueueSignedExchangeReport(
std::move(report), network_anonymization_key);
}
} // namespace
// static
std::unique_ptr<SignedExchangeReporter> SignedExchangeReporter::MaybeCreate(
const GURL& outer_url,
const std::string& referrer,
const network::mojom::URLResponseHead& response,
const net::NetworkAnonymizationKey& network_anonymization_key,
FrameTreeNodeId frame_tree_node_id) {
if (!signed_exchange_utils::
IsSignedExchangeReportingForDistributorsEnabled()) {
return nullptr;
}
return base::WrapUnique(new SignedExchangeReporter(
outer_url, referrer, response, network_anonymization_key,
frame_tree_node_id));
}
SignedExchangeReporter::SignedExchangeReporter(
const GURL& outer_url,
const std::string& referrer,
const network::mojom::URLResponseHead& response,
const net::NetworkAnonymizationKey& network_anonymization_key,
FrameTreeNodeId frame_tree_node_id)
: report_(network::mojom::SignedExchangeReport::New()),
request_start_(response.load_timing.request_start),
network_anonymization_key_(network_anonymization_key),
frame_tree_node_id_(frame_tree_node_id) {
report_->outer_url = outer_url;
report_->referrer = referrer;
report_->server_ip_address = response.remote_endpoint.address();
// If we got response headers, assume that the connection used HTTP/1.1
// unless ALPN negotiation tells us otherwise (handled below).
report_->protocol = response.was_alpn_negotiated
? response.alpn_negotiated_protocol
: std::string("http/1.1");
report_->status_code =
response.headers ? response.headers->response_code() : 0;
report_->method = "GET";
}
SignedExchangeReporter::~SignedExchangeReporter() = default;
void SignedExchangeReporter::set_cert_server_ip_address(
const net::IPAddress& cert_server_ip_address) {
cert_server_ip_address_ = cert_server_ip_address;
}
void SignedExchangeReporter::set_inner_url(const GURL& inner_url) {
DCHECK(report_);
report_->inner_url = inner_url;
}
void SignedExchangeReporter::set_cert_url(const GURL& cert_url) {
DCHECK(report_);
report_->cert_url = cert_url;
}
void SignedExchangeReporter::ReportLoadResultAndFinish(
SignedExchangeLoadResult result) {
DCHECK(report_);
const char* result_string = GetResultTypeString(result);
report_->success = result == SignedExchangeLoadResult::kSuccess;
if (ShouldDowngradeReport(result_string, *report_, cert_server_ip_address_)) {
// If the report should be downgraded (See the comment of
// ShouldDowngradeReport):
// [spec text]
// - Set report body’s "type" to "sxg.failed".
// - Set report body’s "elapsed_time" to 0.
report_->type = kSXGResultFailed;
report_->elapsed_time = base::TimeDelta();
} else {
report_->type = result_string;
report_->elapsed_time = base::TimeTicks::Now() - request_start_;
}
ReportResult(frame_tree_node_id_, std::move(report_),
network_anonymization_key_);
}
void SignedExchangeReporter::ReportHeaderIntegrityMismatch() {
DCHECK(report_);
report_->success = false;
report_->type = kSXGHeaderIntegrityMismatch;
report_->elapsed_time = base::TimeDelta();
ReportResult(frame_tree_node_id_, std::move(report_),
network_anonymization_key_);
}
} // namespace content