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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/browser/frame_host/ancestor_throttle.h" | 5 #include "content/browser/frame_host/ancestor_throttle.h" |
6 | 6 |
7 #include "base/metrics/histogram_macros.h" | 7 #include "base/metrics/histogram_macros.h" |
8 #include "base/strings/string_split.h" | 8 #include "base/strings/string_split.h" |
9 #include "base/strings/string_util.h" | 9 #include "base/strings/string_util.h" |
10 #include "base/strings/stringprintf.h" | 10 #include "base/strings/stringprintf.h" |
11 #include "content/browser/frame_host/frame_tree.h" | 11 #include "content/browser/frame_host/frame_tree.h" |
12 #include "content/browser/frame_host/frame_tree_node.h" | 12 #include "content/browser/frame_host/frame_tree_node.h" |
13 #include "content/browser/frame_host/navigation_handle_impl.h" | 13 #include "content/browser/frame_host/navigation_handle_impl.h" |
14 #include "content/browser/frame_host/navigation_request.h" | |
15 #include "content/public/browser/browser_thread.h" | 14 #include "content/public/browser/browser_thread.h" |
16 #include "content/public/browser/navigation_handle.h" | 15 #include "content/public/browser/navigation_handle.h" |
17 #include "content/public/browser/navigation_throttle.h" | 16 #include "content/public/browser/navigation_throttle.h" |
18 #include "content/public/common/browser_side_navigation_policy.h" | |
19 #include "content/public/common/console_message_level.h" | 17 #include "content/public/common/console_message_level.h" |
20 #include "net/http/http_response_headers.h" | 18 #include "net/http/http_response_headers.h" |
21 #include "url/origin.h" | 19 #include "url/origin.h" |
22 | 20 |
23 namespace content { | 21 namespace content { |
24 | 22 |
25 namespace { | 23 namespace { |
26 const char kXFrameOptionsSameOriginHistogram[] = "Security.XFrameOptions"; | 24 const char kXFrameOptionsSameOriginHistogram[] = "Security.XFrameOptions"; |
27 | 25 |
28 // This enum is used for UMA metrics. Keep these enums up to date with | 26 // This enum is used for UMA metrics. Keep these enums up to date with |
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160 RecordXFrameOptionsUsage(BYPASS); | 158 RecordXFrameOptionsUsage(BYPASS); |
161 return NavigationThrottle::PROCEED; | 159 return NavigationThrottle::PROCEED; |
162 case HeaderDisposition::ALLOWALL: | 160 case HeaderDisposition::ALLOWALL: |
163 RecordXFrameOptionsUsage(ALLOWALL); | 161 RecordXFrameOptionsUsage(ALLOWALL); |
164 return NavigationThrottle::PROCEED; | 162 return NavigationThrottle::PROCEED; |
165 } | 163 } |
166 NOTREACHED(); | 164 NOTREACHED(); |
167 return NavigationThrottle::BLOCK_RESPONSE; | 165 return NavigationThrottle::BLOCK_RESPONSE; |
168 } | 166 } |
169 | 167 |
170 NavigationThrottle::ThrottleCheckResult | |
171 AncestorThrottle::CheckContentSecurityPolicyFrameSrc(bool is_redirect) { | |
172 // If PlzNavigate is enabled, "frame-src" is enforced on the browser side, | |
173 // else on the renderer side. | |
174 if (!IsBrowserSideNavigationEnabled()) | |
175 return NavigationThrottle::PROCEED; | |
176 | |
177 const GURL& url = navigation_handle()->GetURL(); | |
178 if (url.SchemeIs(url::kAboutScheme)) | |
179 return NavigationThrottle::PROCEED; | |
180 | |
181 NavigationHandleImpl* handle = | |
182 static_cast<NavigationHandleImpl*>(navigation_handle()); | |
183 | |
184 if (handle->should_check_main_world_csp() == CSPDisposition::DO_NOT_CHECK) | |
185 return NavigationThrottle::PROCEED; | |
186 | |
187 FrameTreeNode* parent_ftn = handle->frame_tree_node()->parent(); | |
188 DCHECK(parent_ftn); | |
189 RenderFrameHostImpl* parent = parent_ftn->current_frame_host(); | |
190 DCHECK(parent); | |
191 | |
192 if (!parent->IsAllowedByCsp(CSPDirective::FrameSrc, url, is_redirect)) | |
193 return NavigationThrottle::BLOCK_REQUEST; | |
194 | |
195 return NavigationThrottle::PROCEED; | |
196 } | |
197 | |
198 NavigationThrottle::ThrottleCheckResult AncestorThrottle::WillStartRequest() { | |
199 return CheckContentSecurityPolicyFrameSrc(false); | |
200 } | |
201 | |
202 NavigationThrottle::ThrottleCheckResult | |
203 AncestorThrottle::WillRedirectRequest() { | |
204 return CheckContentSecurityPolicyFrameSrc(true); | |
205 } | |
206 | |
207 AncestorThrottle::AncestorThrottle(NavigationHandle* handle) | 168 AncestorThrottle::AncestorThrottle(NavigationHandle* handle) |
208 : NavigationThrottle(handle) {} | 169 : NavigationThrottle(handle) {} |
209 | 170 |
210 void AncestorThrottle::ParseError(const std::string& value, | 171 void AncestorThrottle::ParseError(const std::string& value, |
211 HeaderDisposition disposition) { | 172 HeaderDisposition disposition) { |
212 DCHECK(disposition == HeaderDisposition::CONFLICT || | 173 DCHECK(disposition == HeaderDisposition::CONFLICT || |
213 disposition == HeaderDisposition::INVALID); | 174 disposition == HeaderDisposition::INVALID); |
214 if (!navigation_handle()->GetRenderFrameHost()) | 175 if (!navigation_handle()->GetRenderFrameHost()) |
215 return; // Some responses won't have a RFH (i.e. 204/205s or downloads). | 176 return; // Some responses won't have a RFH (i.e. 204/205s or downloads). |
216 | 177 |
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299 HeadersContainFrameAncestorsCSP(headers)) { | 260 HeadersContainFrameAncestorsCSP(headers)) { |
300 // TODO(mkwst): 'frame-ancestors' is currently handled in Blink. We should | 261 // TODO(mkwst): 'frame-ancestors' is currently handled in Blink. We should |
301 // handle it here instead. Until then, don't block the request, and let | 262 // handle it here instead. Until then, don't block the request, and let |
302 // Blink handle it. https://crbug.com/555418 | 263 // Blink handle it. https://crbug.com/555418 |
303 return HeaderDisposition::BYPASS; | 264 return HeaderDisposition::BYPASS; |
304 } | 265 } |
305 return result; | 266 return result; |
306 } | 267 } |
307 | 268 |
308 } // namespace content | 269 } // namespace content |
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