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
content / browser / webui / web_ui_main_frame_observer.cc [blame]
// 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 "content/browser/webui/web_ui_main_frame_observer.h"
#include <string>
#include <utility>
#include "build/build_config.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/webui/web_ui_impl.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/web_ui_controller.h"
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include "base/feature_list.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "base/strings/strcat.h"
#include "base/strings/utf_string_conversions.h"
#include "components/crash/content/browser/error_reporting/javascript_error_report.h" // nogncheck
#include "components/crash/content/browser/error_reporting/js_error_report_processor.h" // nogncheck
#include "content/public/browser/web_contents.h"
#include "content/public/common/content_features.h"
#include "content/public/common/url_constants.h"
#include "url/gurl.h"
#endif
namespace content {
namespace {
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
// Remove the pieces of the URL we don't want to send back with the error
// reports. In particular, do not send query or fragments as those can have
// privacy-sensitive information in them.
std::string RedactURL(const GURL& url) {
std::string redacted_url = url.DeprecatedGetOriginAsURL().spec();
// Path will start with / and GetOrigin ends with /. Cut one / to avoid
// chrome://discards//graph.
if (!redacted_url.empty() && redacted_url.back() == '/') {
redacted_url.pop_back();
}
base::StrAppend(&redacted_url, {url.path_piece()});
return redacted_url;
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
} // namespace
WebUIMainFrameObserver::WebUIMainFrameObserver(WebUIImpl* web_ui,
WebContents* contents)
: WebContentsObserver(contents), web_ui_(web_ui) {}
WebUIMainFrameObserver::~WebUIMainFrameObserver() = default;
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
void WebUIMainFrameObserver::OnDidAddMessageToConsole(
RenderFrameHost* source_frame,
blink::mojom::ConsoleMessageLevel log_level,
const std::u16string& message,
int32_t line_no,
const std::u16string& source_id,
const std::optional<std::u16string>& untrusted_stack_trace) {
DVLOG(3) << "OnDidAddMessageToConsole called for " << message;
if (untrusted_stack_trace) {
DVLOG(3) << "stack is " << *untrusted_stack_trace;
}
if (!error_reporting_enabled_) {
DVLOG(3) << "Message not reported, error reporting disabled for this page "
"or experiment is off";
return;
}
if (log_level != blink::mojom::ConsoleMessageLevel::kError) {
DVLOG(3) << "Message not reported, not an error";
return;
}
// Some WebUI pages have another WebUI page in an <iframe>. Both
// WebUIMainFrameObservers will get a callback when either page gets an error.
// To avoid duplicates, only report on errors from this page's frame.
if (source_frame != web_ui_->GetRenderFrameHost()) {
DVLOG(3) << "Message not reported, different frame";
return;
}
scoped_refptr<JsErrorReportProcessor> processor =
JsErrorReportProcessor::Get();
if (!processor) {
// This usually means we are not on an official Google build, FYI.
DVLOG(3) << "Message not reported, no processor";
return;
}
// Redact query parameters & fragment. Also the username and password.
// TODO(crbug.com/40146362) Improve redaction.
GURL url(source_id);
if (!url.is_valid()) {
DVLOG(3) << "Message not reported, invalid URL";
return;
}
// If this is not a chrome:// page, do not report the error. In particular,
// some WebUIs use chrome-untrusted:// to host pages with some
// not-controlled-by-Chrome content. The code must not send reports for such
// content because Chrome cannot control what information is being included in
// the reports.
if (!url.SchemeIs(kChromeUIScheme)) {
DVLOG(3) << "Message not reported, not a chrome:// URL";
return;
}
JavaScriptErrorReport report;
report.message = base::UTF16ToUTF8(message);
report.line_number = line_no;
report.url = RedactURL(url);
report.source_system = JavaScriptErrorReport::SourceSystem::kWebUIObserver;
if (untrusted_stack_trace) {
report.stack_trace = base::UTF16ToUTF8(*untrusted_stack_trace);
}
GURL page_url = source_frame->GetLastCommittedURL();
if (page_url.is_valid()) {
report.page_url = RedactURL(page_url);
}
DVLOG(3) << "Error being sent to Google";
processor->SendErrorReport(std::move(report), base::DoNothing(),
web_contents()->GetBrowserContext());
}
void WebUIMainFrameObserver::MaybeEnableWebUIJavaScriptErrorReporting(
NavigationHandle* navigation_handle) {
error_reporting_enabled_ =
web_ui_->GetController()->IsJavascriptErrorReportingEnabled();
// If we are collecting error reports, make sure the main frame sends us
// stacks along with those messages. Warning: Don't call
// RenderFrameHostImpl::SetWantErrorMessageStackTrace() before the remote
// frame is created, or it will lock up the communications channel. (See
// https://crbug.com/1154866).
if (error_reporting_enabled_) {
DVLOG(3) << "Enabled";
static_cast<content::RenderFrameHostImpl*>(web_ui_->GetRenderFrameHost())
->SetWantErrorMessageStackTrace();
} else {
DVLOG(3) << "Error reporting disabled for this page";
}
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
void WebUIMainFrameObserver::ReadyToCommitNavigation(
NavigationHandle* navigation_handle) {
// Navigation didn't occur in the frame associated with this WebUI.
if (navigation_handle->GetRenderFrameHost() !=
web_ui_->GetRenderFrameHost()) {
return;
}
web_ui_->GetController()->WebUIReadyToCommitNavigation(
web_ui_->GetRenderFrameHost());
// TODO(crbug.com/40149439) This is currently disabled due to Windows DLL
// thunking issues. Fix & re-enable.
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
MaybeEnableWebUIJavaScriptErrorReporting(navigation_handle);
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
}
void WebUIMainFrameObserver::PrimaryPageChanged(Page& page) {
web_ui_->DisallowJavascriptOnAllHandlers();
web_ui_->GetController()->WebUIPrimaryPageChanged(page);
}
} // namespace content