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
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/ssl/ssl_policy.h"
#include "base/base_switches.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/memory/singleton.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_util.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/site_instance_impl.h"
#include "content/browser/ssl/ssl_cert_error_handler.h"
#include "content/browser/ssl/ssl_request_info.h"
#include "content/browser/web_contents/navigation_entry_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/common/ssl_status.h"
#include "content/public/common/url_constants.h"
#include "net/ssl/ssl_info.h"
#include "webkit/common/resource_type.h"
namespace content {
SSLPolicy::SSLPolicy(SSLPolicyBackend* backend)
: backend_(backend) {
DCHECK(backend_);
}
void SSLPolicy::OnCertError(SSLCertErrorHandler* handler) {
// First we check if we know the policy for this error.
net::CertPolicy::Judgment judgment = backend_->QueryPolicy(
handler->ssl_info().cert.get(),
handler->request_url().host(),
handler->cert_error());
if (judgment == net::CertPolicy::ALLOWED) {
handler->ContinueRequest();
return;
}
// The judgment is either DENIED or UNKNOWN.
// For now we handle the DENIED as the UNKNOWN, which means a blocking
// page is shown to the user every time he comes back to the page.
switch (handler->cert_error()) {
case net::ERR_CERT_COMMON_NAME_INVALID:
case net::ERR_CERT_DATE_INVALID:
case net::ERR_CERT_AUTHORITY_INVALID:
case net::ERR_CERT_WEAK_SIGNATURE_ALGORITHM:
case net::ERR_CERT_WEAK_KEY:
OnCertErrorInternal(handler, !handler->fatal(), handler->fatal());
break;
case net::ERR_CERT_NO_REVOCATION_MECHANISM:
// Ignore this error.
handler->ContinueRequest();
break;
case net::ERR_CERT_UNABLE_TO_CHECK_REVOCATION:
// We ignore this error but will show a warning status in the location
// bar.
handler->ContinueRequest();
break;
case net::ERR_CERT_CONTAINS_ERRORS:
case net::ERR_CERT_REVOKED:
case net::ERR_CERT_INVALID:
OnCertErrorInternal(handler, false, handler->fatal());
break;
default:
NOTREACHED();
handler->CancelRequest();
break;
}
}
void SSLPolicy::DidRunInsecureContent(NavigationEntryImpl* entry,
const std::string& security_origin) {
if (!entry)
return;
SiteInstance* site_instance = entry->site_instance();
if (!site_instance)
return;
backend_->HostRanInsecureContent(GURL(security_origin).host(),
site_instance->GetProcess()->GetID());
}
void SSLPolicy::OnRequestStarted(SSLRequestInfo* info) {
// TODO(abarth): This mechanism is wrong. What we should be doing is sending
// this information back through WebKit and out some FrameLoaderClient
// methods.
if (net::IsCertStatusError(info->ssl_cert_status()))
backend_->HostRanInsecureContent(info->url().host(), info->child_id());
}
void SSLPolicy::UpdateEntry(NavigationEntryImpl* entry,
WebContentsImpl* web_contents) {
DCHECK(entry);
InitializeEntryIfNeeded(entry);
if (!entry->GetURL().SchemeIsSecure())
return;
// An HTTPS response may not have a certificate for some reason. When that
// happens, use the unauthenticated (HTTP) rather than the authentication
// broken security style so that we can detect this error condition.
if (!entry->GetSSL().cert_id) {
entry->GetSSL().security_style = SECURITY_STYLE_UNAUTHENTICATED;
return;
}
if (net::IsCertStatusError(entry->GetSSL().cert_status)) {
// Minor errors don't lower the security style to
// SECURITY_STYLE_AUTHENTICATION_BROKEN.
if (!net::IsCertStatusMinorError(entry->GetSSL().cert_status)) {
entry->GetSSL().security_style =
SECURITY_STYLE_AUTHENTICATION_BROKEN;
}
return;
}
SiteInstance* site_instance = entry->site_instance();
// Note that |site_instance| can be NULL here because NavigationEntries don't
// necessarily have site instances. Without a process, the entry can't
// possibly have insecure content. See bug http://crbug.com/12423.
if (site_instance &&
backend_->DidHostRunInsecureContent(
entry->GetURL().host(), site_instance->GetProcess()->GetID())) {
entry->GetSSL().security_style =
SECURITY_STYLE_AUTHENTICATION_BROKEN;
entry->GetSSL().content_status |= SSLStatus::RAN_INSECURE_CONTENT;
return;
}
if (web_contents->DisplayedInsecureContent())
entry->GetSSL().content_status |= SSLStatus::DISPLAYED_INSECURE_CONTENT;
else
entry->GetSSL().content_status &= ~SSLStatus::DISPLAYED_INSECURE_CONTENT;
}
void SSLPolicy::OnAllowCertificate(scoped_refptr<SSLCertErrorHandler> handler,
bool allow) {
if (allow) {
// Default behavior for accepting a certificate.
// Note that we should not call SetMaxSecurityStyle here, because the active
// NavigationEntry has just been deleted (in HideInterstitialPage) and the
// new NavigationEntry will not be set until DidNavigate. This is ok,
// because the new NavigationEntry will have its max security style set
// within DidNavigate.
//
// While AllowCertForHost() executes synchronously on this thread,
// ContinueRequest() gets posted to a different thread. Calling
// AllowCertForHost() first ensures deterministic ordering.
backend_->AllowCertForHost(handler->ssl_info().cert.get(),
handler->request_url().host(),
handler->cert_error());
handler->ContinueRequest();
} else {
// Default behavior for rejecting a certificate.
//
// While DenyCertForHost() executes synchronously on this thread,
// CancelRequest() gets posted to a different thread. Calling
// DenyCertForHost() first ensures deterministic ordering.
backend_->DenyCertForHost(handler->ssl_info().cert.get(),
handler->request_url().host(),
handler->cert_error());
handler->CancelRequest();
}
}
////////////////////////////////////////////////////////////////////////////////
// Certificate Error Routines
void SSLPolicy::OnCertErrorInternal(SSLCertErrorHandler* handler,
bool overridable,
bool strict_enforcement) {
CertificateRequestResultType result =
CERTIFICATE_REQUEST_RESULT_TYPE_CONTINUE;
GetContentClient()->browser()->AllowCertificateError(
handler->render_process_id(),
handler->render_view_id(),
handler->cert_error(),
handler->ssl_info(),
handler->request_url(),
handler->resource_type(),
overridable,
strict_enforcement,
base::Bind(&SSLPolicy::OnAllowCertificate, base::Unretained(this),
make_scoped_refptr(handler)),
&result);
switch (result) {
case CERTIFICATE_REQUEST_RESULT_TYPE_CONTINUE:
break;
case CERTIFICATE_REQUEST_RESULT_TYPE_CANCEL:
handler->CancelRequest();
break;
case CERTIFICATE_REQUEST_RESULT_TYPE_DENY:
handler->DenyRequest();
break;
default:
NOTREACHED();
}
}
void SSLPolicy::InitializeEntryIfNeeded(NavigationEntryImpl* entry) {
if (entry->GetSSL().security_style != SECURITY_STYLE_UNKNOWN)
return;
entry->GetSSL().security_style = entry->GetURL().SchemeIsSecure() ?
SECURITY_STYLE_AUTHENTICATED : SECURITY_STYLE_UNAUTHENTICATED;
}
void SSLPolicy::OriginRanInsecureContent(const std::string& origin, int pid) {
GURL parsed_origin(origin);
if (parsed_origin.SchemeIsSecure())
backend_->HostRanInsecureContent(parsed_origin.host(), pid);
}
} // namespace content
|
