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chromium / chromium / src / 2d47b917314a9008902c7c8f3f9e6a7410ef6a1b / . / extensions / browser / api / web_request / web_request_api.cc
blob: d49ab7aa053a06e30bfe9246cdaebe59eed843a8 [file] [log] [blame]
// 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 "extensions/browser/api/web_request/web_request_api.h"
#include <stddef.h>
#include <algorithm>
#include <memory>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/feature_list.h"
#include "base/json/json_writer.h"
#include "base/lazy_instance.h"
#include "base/macros.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/user_metrics.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/post_task.h"
#include "base/time/time.h"
#include "base/values.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/render_process_host.h"
#include "content/public/browser/resource_context.h"
#include "content/public/browser/resource_request_info.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/child_process_host.h"
#include "content/public/common/resource_type.h"
#include "content/public/common/url_constants.h"
#include "extensions/browser/api/activity_log/web_request_constants.h"
#include "extensions/browser/api/declarative/rules_registry_service.h"
#include "extensions/browser/api/declarative_net_request/ruleset_manager.h"
#include "extensions/browser/api/declarative_webrequest/request_stage.h"
#include "extensions/browser/api/declarative_webrequest/webrequest_constants.h"
#include "extensions/browser/api/declarative_webrequest/webrequest_rules_registry.h"
#include "extensions/browser/api/extensions_api_client.h"
#include "extensions/browser/api/web_request/web_request_api_constants.h"
#include "extensions/browser/api/web_request/web_request_api_helpers.h"
#include "extensions/browser/api/web_request/web_request_event_details.h"
#include "extensions/browser/api/web_request/web_request_info.h"
#include "extensions/browser/api/web_request/web_request_proxying_url_loader_factory.h"
#include "extensions/browser/api/web_request/web_request_proxying_websocket.h"
#include "extensions/browser/api/web_request/web_request_resource_type.h"
#include "extensions/browser/api/web_request/web_request_time_tracker.h"
#include "extensions/browser/api_activity_monitor.h"
#include "extensions/browser/device_local_account_util.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/extension_navigation_ui_data.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/browser/guest_view/guest_view_events.h"
#include "extensions/browser/guest_view/web_view/web_view_constants.h"
#include "extensions/browser/guest_view/web_view/web_view_guest.h"
#include "extensions/browser/info_map.h"
#include "extensions/browser/io_thread_extension_message_filter.h"
#include "extensions/browser/runtime_data.h"
#include "extensions/browser/warning_service.h"
#include "extensions/browser/warning_set.h"
#include "extensions/common/api/web_request.h"
#include "extensions/common/error_utils.h"
#include "extensions/common/event_filtering_info.h"
#include "extensions/common/extension.h"
#include "extensions/common/features/feature.h"
#include "extensions/common/features/feature_provider.h"
#include "extensions/common/permissions/permissions_data.h"
#include "extensions/common/url_pattern.h"
#include "extensions/strings/grit/extensions_strings.h"
#include "net/base/auth.h"
#include "net/base/net_errors.h"
#include "net/http/http_util.h"
#include "services/network/public/cpp/features.h"
#include "ui/base/l10n/l10n_util.h"
#include "url/gurl.h"
#if defined(OS_CHROMEOS)
#include "chromeos/login/login_state.h"
#endif // defined(OS_CHROMEOS)
using content::BrowserThread;
using content::ResourceRequestInfo;
using extension_web_request_api_helpers::ExtraInfoSpec;
namespace activity_log = activity_log_web_request_constants;
namespace helpers = extension_web_request_api_helpers;
namespace keys = extension_web_request_api_constants;
namespace extensions {
namespace declarative_keys = declarative_webrequest_constants;
namespace web_request = api::web_request;
namespace {
// Describes the action taken by the Web Request API for a given stage of a web
// request.
// These values are written to logs. New enum values can be added, but existing
// enum values must never be renumbered or deleted and reused.
enum RequestAction {
CANCEL = 0,
REDIRECT = 1,
MODIFY_REQUEST_HEADERS = 2,
MODIFY_RESPONSE_HEADERS = 3,
SET_AUTH_CREDENTIALS = 4,
MAX
};
// Corresponds to the "WebRequestEventResponse" histogram enumeration type in
// src/tools/metrics/histograms/enums.xml.
//
// DO NOT REORDER OR CHANGE THE MEANING OF THESE VALUES.
enum class WebRequestEventResponse {
kIgnored,
kObserved,
kMaxValue = kObserved,
};
const char kWebRequestEventPrefix[] = "webRequest.";
// List of all the webRequest events. Note: this doesn't include
// "onActionIgnored" which is not related to a request's lifecycle and is
// handled as a normal event (as opposed to a WebRequestEvent at the bindings
// layer).
const char* const kWebRequestEvents[] = {
keys::kOnBeforeRedirectEvent,
web_request::OnBeforeRequest::kEventName,
keys::kOnBeforeSendHeadersEvent,
keys::kOnCompletedEvent,
web_request::OnErrorOccurred::kEventName,
keys::kOnSendHeadersEvent,
keys::kOnAuthRequiredEvent,
keys::kOnResponseStartedEvent,
keys::kOnHeadersReceivedEvent,
};
// User data key for WebRequestAPI::ProxySet.
const void* const kWebRequestProxySetUserDataKey =
&kWebRequestProxySetUserDataKey;
const char* GetRequestStageAsString(
ExtensionWebRequestEventRouter::EventTypes type) {
switch (type) {
case ExtensionWebRequestEventRouter::kInvalidEvent:
return "Invalid";
case ExtensionWebRequestEventRouter::kOnBeforeRequest:
return keys::kOnBeforeRequest;
case ExtensionWebRequestEventRouter::kOnBeforeSendHeaders:
return keys::kOnBeforeSendHeaders;
case ExtensionWebRequestEventRouter::kOnSendHeaders:
return keys::kOnSendHeaders;
case ExtensionWebRequestEventRouter::kOnHeadersReceived:
return keys::kOnHeadersReceived;
case ExtensionWebRequestEventRouter::kOnBeforeRedirect:
return keys::kOnBeforeRedirect;
case ExtensionWebRequestEventRouter::kOnAuthRequired:
return keys::kOnAuthRequired;
case ExtensionWebRequestEventRouter::kOnResponseStarted:
return keys::kOnResponseStarted;
case ExtensionWebRequestEventRouter::kOnErrorOccurred:
return keys::kOnErrorOccurred;
case ExtensionWebRequestEventRouter::kOnCompleted:
return keys::kOnCompleted;
}
NOTREACHED();
return "Not reached";
}
void LogRequestAction(RequestAction action) {
DCHECK_NE(RequestAction::MAX, action);
UMA_HISTOGRAM_ENUMERATION("Extensions.WebRequestAction", action,
RequestAction::MAX);
}
bool IsWebRequestEvent(const std::string& event_name) {
std::string web_request_event_name(event_name);
if (base::StartsWith(web_request_event_name,
webview::kWebViewEventPrefix,
base::CompareCase::SENSITIVE)) {
web_request_event_name.replace(
0, strlen(webview::kWebViewEventPrefix), kWebRequestEventPrefix);
}
auto* const* web_request_events_end =
kWebRequestEvents + arraysize(kWebRequestEvents);
return std::find(kWebRequestEvents, web_request_events_end,
web_request_event_name) != web_request_events_end;
}
// Returns whether |request| has been triggered by an extension in
// |extension_info_map|.
bool IsRequestFromExtension(const WebRequestInfo& request,
const InfoMap* extension_info_map) {
if (request.render_process_id == -1)
return false;
// |extension_info_map| is NULL for system-level requests.
if (!extension_info_map)
return false;
const std::set<std::string> extension_ids =
extension_info_map->process_map().GetExtensionsInProcess(
request.render_process_id);
if (extension_ids.empty())
return false;
// Treat hosted apps as normal web pages (crbug.com/526413).
for (const std::string& extension_id : extension_ids) {
const Extension* extension =
extension_info_map->extensions().GetByID(extension_id);
if (extension && !extension->is_hosted_app())
return true;
}
return false;
}
// Converts a HttpHeaders dictionary to a |name|, |value| pair. Returns
// true if successful.
bool FromHeaderDictionary(const base::DictionaryValue* header_value,
std::string* name,
std::string* value) {
if (!header_value->GetString(keys::kHeaderNameKey, name))
return false;
// We require either a "value" or a "binaryValue" entry.
if (!(header_value->HasKey(keys::kHeaderValueKey) ^
header_value->HasKey(keys::kHeaderBinaryValueKey))) {
return false;
}
if (header_value->HasKey(keys::kHeaderValueKey)) {
if (!header_value->GetString(keys::kHeaderValueKey, value)) {
return false;
}
} else if (header_value->HasKey(keys::kHeaderBinaryValueKey)) {
const base::ListValue* list = NULL;
if (!header_value->HasKey(keys::kHeaderBinaryValueKey)) {
*value = "";
} else if (!header_value->GetList(keys::kHeaderBinaryValueKey, &list) ||
!helpers::CharListToString(list, value)) {
return false;
}
}
return true;
}
// Sends an event to subscribers of chrome.declarativeWebRequest.onMessage or
// to subscribers of webview.onMessage if the action is being operated upon
// a <webview> guest renderer.
// |extension_id| identifies the extension that sends and receives the event.
// |is_web_view_guest| indicates whether the action is for a <webview>.
// |web_view_instance_id| is a valid if |is_web_view_guest| is true.
// |event_details| is passed to the event listener.
void SendOnMessageEventOnUI(
void* browser_context_id,
const std::string& extension_id,
bool is_web_view_guest,
int web_view_instance_id,
std::unique_ptr<WebRequestEventDetails> event_details) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
content::BrowserContext* browser_context =
reinterpret_cast<content::BrowserContext*>(browser_context_id);
if (!ExtensionsBrowserClient::Get()->IsValidContext(browser_context))
return;
std::unique_ptr<base::ListValue> event_args(new base::ListValue);
event_details->DetermineFrameDataOnUI();
event_args->Append(event_details->GetAndClearDict());
EventRouter* event_router = EventRouter::Get(browser_context);
EventFilteringInfo event_filtering_info;
events::HistogramValue histogram_value = events::UNKNOWN;
std::string event_name;
// The instance ID uniquely identifies a <webview> instance within an embedder
// process. We use a filter here so that only event listeners for a particular
// <webview> will fire.
if (is_web_view_guest) {
event_filtering_info.instance_id = web_view_instance_id;
histogram_value = events::WEB_VIEW_INTERNAL_ON_MESSAGE;
event_name = webview::kEventMessage;
} else {
histogram_value = events::DECLARATIVE_WEB_REQUEST_ON_MESSAGE;
event_name = declarative_keys::kOnMessage;
}
std::unique_ptr<Event> event(new Event(
histogram_value, event_name, std::move(event_args), browser_context,
GURL(), EventRouter::USER_GESTURE_UNKNOWN, event_filtering_info));
event_router->DispatchEventToExtension(extension_id, std::move(event));
}
// Helper to dispatch the "onActionIgnored" event.
void NotifyIgnoredActionsOnUI(
void* browser_context_id,
uint64_t request_id,
extension_web_request_api_helpers::IgnoredActions ignored_actions) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
content::BrowserContext* browser_context =
reinterpret_cast<content::BrowserContext*>(browser_context_id);
if (!ExtensionsBrowserClient::Get()->IsValidContext(browser_context))
return;
EventRouter* event_router = EventRouter::Get(browser_context);
web_request::OnActionIgnored::Details details;
details.request_id = base::NumberToString(request_id);
details.action = web_request::IGNORED_ACTION_TYPE_NONE;
for (const auto& ignored_action : ignored_actions) {
DCHECK_NE(web_request::IGNORED_ACTION_TYPE_NONE,
ignored_action.action_type);
details.action = ignored_action.action_type;
auto event = std::make_unique<Event>(
events::WEB_REQUEST_ON_ACTION_IGNORED,
web_request::OnActionIgnored::kEventName,
web_request::OnActionIgnored::Create(details), browser_context);
event_router->DispatchEventToExtension(ignored_action.extension_id,
std::move(event));
}
}
events::HistogramValue GetEventHistogramValue(const std::string& event_name) {
// Event names will either be webRequest events, or guest view (probably web
// view) events that map to webRequest events. Check webRequest first.
static struct ValueAndName {
events::HistogramValue histogram_value;
const char* const event_name;
} values_and_names[] = {
{events::WEB_REQUEST_ON_BEFORE_REDIRECT, keys::kOnBeforeRedirectEvent},
{events::WEB_REQUEST_ON_BEFORE_REQUEST,
web_request::OnBeforeRequest::kEventName},
{events::WEB_REQUEST_ON_BEFORE_SEND_HEADERS,
keys::kOnBeforeSendHeadersEvent},
{events::WEB_REQUEST_ON_COMPLETED, keys::kOnCompletedEvent},
{events::WEB_REQUEST_ON_ERROR_OCCURRED,
web_request::OnErrorOccurred::kEventName},
{events::WEB_REQUEST_ON_SEND_HEADERS, keys::kOnSendHeadersEvent},
{events::WEB_REQUEST_ON_AUTH_REQUIRED, keys::kOnAuthRequiredEvent},
{events::WEB_REQUEST_ON_RESPONSE_STARTED, keys::kOnResponseStartedEvent},
{events::WEB_REQUEST_ON_HEADERS_RECEIVED, keys::kOnHeadersReceivedEvent}};
static_assert(arraysize(kWebRequestEvents) == arraysize(values_and_names),
"kWebRequestEvents and values_and_names must be the same");
for (const ValueAndName& value_and_name : values_and_names) {
if (value_and_name.event_name == event_name)
return value_and_name.histogram_value;
}
// If there is no webRequest event, it might be a guest view webRequest event.
events::HistogramValue guest_view_histogram_value =
guest_view_events::GetEventHistogramValue(event_name);
if (guest_view_histogram_value != events::UNKNOWN)
return guest_view_histogram_value;
// There is no histogram value for this event name. It should be added to
// either the mapping here, or in guest_view_events.
NOTREACHED() << "Event " << event_name << " must have a histogram value";
return events::UNKNOWN;
}
// We hide events from the system context as well as sensitive requests.
bool ShouldHideEvent(void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo& request) {
return (!browser_context ||
WebRequestPermissions::HideRequest(extension_info_map, request));
}
// Returns true if we're in a Public Session and restrictions are enabled.
bool ArePublicSessionRestrictionsEnabled() {
#if defined(OS_CHROMEOS)
if (chromeos::LoginState::IsInitialized()) {
return chromeos::LoginState::Get()->ArePublicSessionRestrictionsEnabled();
}
#endif
return false;
}
// Returns event details for a given request.
std::unique_ptr<WebRequestEventDetails> CreateEventDetails(
const WebRequestInfo& request,
int extra_info_spec) {
return std::make_unique<WebRequestEventDetails>(request, extra_info_spec);
}
void MaybeProxyAuthRequestOnIO(
content::ResourceContext* resource_context,
net::AuthChallengeInfo* auth_info,
scoped_refptr<net::HttpResponseHeaders> response_headers,
const content::GlobalRequestID& request_id,
WebRequestAPI::AuthRequestCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
auto* proxies =
WebRequestAPI::ProxySet::GetFromResourceContext(resource_context);
proxies->MaybeProxyAuthRequest(auth_info, std::move(response_headers),
request_id, std::move(callback));
}
// Checks whether the extension has any permissions that would use the web
// request API.
bool HasAnyWebRequestPermissions(const Extension* extension) {
static const APIPermission::ID kWebRequestPermissions[] = {
APIPermission::ID::kWebRequest,
APIPermission::ID::kWebRequestBlocking,
APIPermission::ID::kDeclarativeWebRequest,
APIPermission::ID::kDeclarativeNetRequest,
APIPermission::ID::kWebView,
};
const PermissionsData* permissions = extension->permissions_data();
for (auto permission : kWebRequestPermissions) {
if (permissions->HasAPIPermission(permission))
return true;
}
return false;
}
// Mirrors the histogram enum of the same name. DO NOT REORDER THESE VALUES OR
// CHANGE THEIR MEANING.
enum class WebRequestEventListenerFlag {
kTotal,
kNone,
kRequestHeaders,
kResponseHeaders,
kBlocking,
kAsyncBlocking,
kRequestBody,
kExtraHeaders,
kMaxValue = kExtraHeaders,
};
void LogEventListenerFlag(WebRequestEventListenerFlag flag) {
UMA_HISTOGRAM_ENUMERATION("Extensions.WebRequest.EventListenerFlag", flag);
}
void RecordAddEventListenerUMAs(int extra_info_spec) {
LogEventListenerFlag(WebRequestEventListenerFlag::kTotal);
if (extra_info_spec == 0) {
LogEventListenerFlag(WebRequestEventListenerFlag::kNone);
return;
}
if (extra_info_spec & ExtraInfoSpec::REQUEST_HEADERS)
LogEventListenerFlag(WebRequestEventListenerFlag::kRequestHeaders);
if (extra_info_spec & ExtraInfoSpec::RESPONSE_HEADERS)
LogEventListenerFlag(WebRequestEventListenerFlag::kResponseHeaders);
if (extra_info_spec & ExtraInfoSpec::BLOCKING)
LogEventListenerFlag(WebRequestEventListenerFlag::kBlocking);
if (extra_info_spec & ExtraInfoSpec::ASYNC_BLOCKING)
LogEventListenerFlag(WebRequestEventListenerFlag::kAsyncBlocking);
if (extra_info_spec & ExtraInfoSpec::REQUEST_BODY)
LogEventListenerFlag(WebRequestEventListenerFlag::kRequestBody);
if (extra_info_spec & ExtraInfoSpec::EXTRA_HEADERS)
LogEventListenerFlag(WebRequestEventListenerFlag::kExtraHeaders);
}
} // namespace
void WebRequestAPI::Proxy::HandleAuthRequest(
net::AuthChallengeInfo* auth_info,
scoped_refptr<net::HttpResponseHeaders> response_headers,
int32_t request_id,
AuthRequestCallback callback) {
// Default implementation cancels the request.
base::PostTaskWithTraits(FROM_HERE, {BrowserThread::UI},
base::BindOnce(std::move(callback), base::nullopt,
false /* should_cancel */));
}
WebRequestAPI::ProxySet::ProxySet() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
}
WebRequestAPI::ProxySet::~ProxySet() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
}
WebRequestAPI::ProxySet* WebRequestAPI::ProxySet::GetFromResourceContext(
content::ResourceContext* resource_context) {
if (!resource_context->GetUserData(kWebRequestProxySetUserDataKey)) {
resource_context->SetUserData(kWebRequestProxySetUserDataKey,
std::make_unique<WebRequestAPI::ProxySet>());
}
return static_cast<WebRequestAPI::ProxySet*>(
resource_context->GetUserData(kWebRequestProxySetUserDataKey));
}
void WebRequestAPI::ProxySet::AddProxy(std::unique_ptr<Proxy> proxy) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
proxies_.insert(std::move(proxy));
}
void WebRequestAPI::ProxySet::RemoveProxy(Proxy* proxy) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
auto requests_it = proxy_to_request_id_map_.find(proxy);
if (requests_it != proxy_to_request_id_map_.end()) {
for (const auto& id : requests_it->second)
request_id_to_proxy_map_.erase(id);
proxy_to_request_id_map_.erase(requests_it);
}
auto proxy_it = proxies_.find(proxy);
DCHECK(proxy_it != proxies_.end());
proxies_.erase(proxy_it);
}
void WebRequestAPI::ProxySet::AssociateProxyWithRequestId(
Proxy* proxy,
const content::GlobalRequestID& id) {
DCHECK(proxy);
DCHECK(proxies_.count(proxy));
DCHECK(id.request_id);
auto result = request_id_to_proxy_map_.emplace(id, proxy);
DCHECK(result.second) << "Unexpected request ID collision.";
proxy_to_request_id_map_[proxy].insert(id);
}
void WebRequestAPI::ProxySet::DisassociateProxyWithRequestId(
Proxy* proxy,
const content::GlobalRequestID& id) {
DCHECK(proxy);
DCHECK(proxies_.count(proxy));
DCHECK(id.request_id);
size_t count = request_id_to_proxy_map_.erase(id);
DCHECK_GT(count, 0u);
count = proxy_to_request_id_map_[proxy].erase(id);
DCHECK_GT(count, 0u);
}
WebRequestAPI::Proxy* WebRequestAPI::ProxySet::GetProxyFromRequestId(
const content::GlobalRequestID& id) {
auto it = request_id_to_proxy_map_.find(id);
if (it == request_id_to_proxy_map_.end())
return nullptr;
return it->second;
}
void WebRequestAPI::ProxySet::MaybeProxyAuthRequest(
net::AuthChallengeInfo* auth_info,
scoped_refptr<net::HttpResponseHeaders> response_headers,
const content::GlobalRequestID& request_id,
AuthRequestCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
Proxy* proxy = GetProxyFromRequestId(request_id);
if (!proxy) {
// The request=>proxy map is maintained on the IO thread so it is not an
// error to get here and have no proxy. In this situation run the |callback|
// which will display a dialog for the user to enter their auth credentials.
base::PostTaskWithTraits(FROM_HERE, {BrowserThread::UI},
base::BindOnce(std::move(callback), base::nullopt,
false /* should_cancel */));
return;
}
proxy->HandleAuthRequest(auth_info, std::move(response_headers),
request_id.request_id, std::move(callback));
}
WebRequestAPI::WebRequestAPI(content::BrowserContext* context)
: browser_context_(context),
info_map_(ExtensionSystem::Get(browser_context_)->info_map()),
request_id_generator_(base::MakeRefCounted<RequestIDGenerator>()),
may_have_proxies_(MayHaveProxies()) {
EventRouter* event_router = EventRouter::Get(browser_context_);
for (size_t i = 0; i < arraysize(kWebRequestEvents); ++i) {
// Observe the webRequest event.
std::string event_name = kWebRequestEvents[i];
event_router->RegisterObserver(this, event_name);
// Also observe the corresponding webview event.
event_name.replace(
0, sizeof(kWebRequestEventPrefix) - 1, webview::kWebViewEventPrefix);
event_router->RegisterObserver(this, event_name);
}
extensions::ExtensionRegistry::Get(browser_context_)->AddObserver(this);
}
WebRequestAPI::~WebRequestAPI() {
}
void WebRequestAPI::Shutdown() {
EventRouter::Get(browser_context_)->UnregisterObserver(this);
extensions::ExtensionRegistry::Get(browser_context_)->RemoveObserver(this);
}
static base::LazyInstance<
BrowserContextKeyedAPIFactory<WebRequestAPI>>::DestructorAtExit g_factory =
LAZY_INSTANCE_INITIALIZER;
// static
BrowserContextKeyedAPIFactory<WebRequestAPI>*
WebRequestAPI::GetFactoryInstance() {
return g_factory.Pointer();
}
void WebRequestAPI::OnListenerRemoved(const EventListenerInfo& details) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// Note that details.event_name includes the sub-event details (e.g. "/123").
// TODO(fsamuel): <webview> events will not be removed through this code path.
// <webview> events will be removed in RemoveWebViewEventListeners. Ideally,
// this code should be decoupled from extensions, we should use the host ID
// instead, and not have two different code paths. This is a huge undertaking
// unfortunately, so we'll resort to two code paths for now.
//
// Note that details.event_name is actually the sub_event_name!
ExtensionWebRequestEventRouter::EventListener::ID id(
details.browser_context, details.extension_id, details.event_name, 0, 0);
// This Unretained is safe because the ExtensionWebRequestEventRouter
// singleton is leaked.
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::IO},
base::Bind(
&ExtensionWebRequestEventRouter::RemoveEventListener,
base::Unretained(ExtensionWebRequestEventRouter::GetInstance()), id,
false /* not strict */));
}
bool WebRequestAPI::MaybeProxyURLLoaderFactory(
content::BrowserContext* browser_context,
content::RenderFrameHost* frame,
int render_process_id,
bool is_navigation,
network::mojom::URLLoaderFactoryRequest* factory_request,
network::mojom::TrustedURLLoaderHeaderClientPtrInfo* header_client) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!MayHaveProxies()) {
bool skip_proxy = true;
// There are a few internal WebUIs that use WebView tag that are whitelisted
// for webRequest.
auto* web_contents = content::WebContents::FromRenderFrameHost(frame);
if (web_contents && WebViewGuest::IsGuest(web_contents)) {
auto* guest_web_contents =
WebViewGuest::GetTopLevelWebContents(web_contents);
auto& guest_url = guest_web_contents->GetURL();
if (guest_url.SchemeIs(content::kChromeUIScheme)) {
auto* feature = FeatureProvider::GetAPIFeature("webRequestInternal");
if (feature
->IsAvailableToContext(nullptr, Feature::WEBUI_CONTEXT,
guest_url)
.is_available()) {
skip_proxy = false;
}
}
}
if (skip_proxy)
return false;
}
auto proxied_request = std::move(*factory_request);
network::mojom::URLLoaderFactoryPtrInfo target_factory_info;
*factory_request = mojo::MakeRequest(&target_factory_info);
std::unique_ptr<ExtensionNavigationUIData> navigation_ui_data;
if (is_navigation) {
DCHECK(frame);
int tab_id;
int window_id;
ExtensionsBrowserClient::Get()->GetTabAndWindowIdForWebContents(
content::WebContents::FromRenderFrameHost(frame), &tab_id, &window_id);
navigation_ui_data =
std::make_unique<ExtensionNavigationUIData>(frame, tab_id, window_id);
}
network::mojom::TrustedURLLoaderHeaderClientRequest header_client_request;
if (header_client)
header_client_request = mojo::MakeRequest(header_client);
// NOTE: This request may be proxied on behalf of an incognito frame, but
// |this| will always be bound to a regular profile (see
// |BrowserContextKeyedAPI::kServiceRedirectedInIncognito|).
DCHECK(browser_context == browser_context_ ||
(browser_context->IsOffTheRecord() &&
ExtensionsBrowserClient::Get()->GetOriginalContext(browser_context) ==
browser_context_));
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::IO},
base::BindOnce(&WebRequestProxyingURLLoaderFactory::StartProxying,
browser_context, browser_context->GetResourceContext(),
// Match the behavior of the WebRequestInfo constructor
// which takes a net::URLRequest*.
is_navigation ? -1 : render_process_id,
request_id_generator_, std::move(navigation_ui_data),
base::Unretained(info_map_), std::move(proxied_request),
std::move(target_factory_info),
std::move(header_client_request)));
return true;
}
bool WebRequestAPI::MaybeProxyAuthRequest(
net::AuthChallengeInfo* auth_info,
scoped_refptr<net::HttpResponseHeaders> response_headers,
const content::GlobalRequestID& request_id,
bool is_main_frame,
AuthRequestCallback callback) {
if (!MayHaveProxies())
return false;
content::GlobalRequestID proxied_request_id = request_id;
if (is_main_frame)
proxied_request_id.child_id = -1;
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::IO},
base::BindOnce(&MaybeProxyAuthRequestOnIO,
browser_context_->GetResourceContext(),
base::RetainedRef(auth_info), std::move(response_headers),
proxied_request_id, std::move(callback)));
return true;
}
void WebRequestAPI::MaybeProxyWebSocket(
content::RenderFrameHost* frame,
network::mojom::WebSocketRequest* request,
network::mojom::AuthenticationHandlerPtr* auth_handler) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!MayHaveProxies())
return;
network::mojom::WebSocketPtrInfo proxied_socket_ptr_info;
auto proxied_request = std::move(*request);
*request = mojo::MakeRequest(&proxied_socket_ptr_info);
auto authentication_request = mojo::MakeRequest(auth_handler);
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::IO},
base::BindOnce(
&WebRequestProxyingWebSocket::StartProxying,
frame->GetProcess()->GetID(), frame->GetRoutingID(),
request_id_generator_, frame->GetLastCommittedOrigin(),
frame->GetProcess()->GetBrowserContext(),
frame->GetProcess()->GetBrowserContext()->GetResourceContext(),
base::Unretained(info_map_), std::move(proxied_socket_ptr_info),
std::move(proxied_request), std::move(authentication_request)));
}
void WebRequestAPI::ForceProxyForTesting() {
++web_request_extension_count_;
UpdateMayHaveProxies();
}
bool WebRequestAPI::MayHaveProxies() const {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!base::FeatureList::IsEnabled(network::features::kNetworkService))
return false;
return web_request_extension_count_ > 0;
}
void WebRequestAPI::UpdateMayHaveProxies() {
if (!base::FeatureList::IsEnabled(network::features::kNetworkService))
return;
bool may_have_proxies = MayHaveProxies();
if (!may_have_proxies_ && may_have_proxies) {
content::BrowserContext::GetDefaultStoragePartition(browser_context_)
->ResetURLLoaderFactories();
}
may_have_proxies_ = may_have_proxies;
}
void WebRequestAPI::OnExtensionLoaded(content::BrowserContext* browser_context,
const Extension* extension) {
if (HasAnyWebRequestPermissions(extension)) {
++web_request_extension_count_;
UpdateMayHaveProxies();
}
}
void WebRequestAPI::OnExtensionUnloaded(
content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionReason reason) {
if (HasAnyWebRequestPermissions(extension)) {
--web_request_extension_count_;
UpdateMayHaveProxies();
}
}
// Represents a single unique listener to an event, along with whatever filter
// parameters and extra_info_spec were specified at the time the listener was
// added.
// NOTE(benjhayden) New APIs should not use this sub_event_name trick! It does
// not play well with event pages. See downloads.onDeterminingFilename and
// ExtensionDownloadsEventRouter for an alternative approach.
ExtensionWebRequestEventRouter::EventListener::EventListener(ID id) : id(id) {}
ExtensionWebRequestEventRouter::EventListener::~EventListener() {}
// Contains info about requests that are blocked waiting for a response from
// an extension.
struct ExtensionWebRequestEventRouter::BlockedRequest {
BlockedRequest() = default;
// Information about the request that is being blocked. Not owned.
const WebRequestInfo* request = nullptr;
// Whether the request originates from an incognito tab.
bool is_incognito = false;
// The event that we're currently blocked on.
EventTypes event = kInvalidEvent;
// The number of event handlers that we are awaiting a response from.
int num_handlers_blocking = 0;
// The callback to call when we get a response from all event handlers.
net::CompletionOnceCallback callback;
// If non-empty, this contains the new URL that the request will redirect to.
// Only valid for OnBeforeRequest and OnHeadersReceived.
GURL* new_url = nullptr;
// The request headers that will be issued along with this request. Only valid
// for OnBeforeSendHeaders.
net::HttpRequestHeaders* request_headers = nullptr;
// The response headers that were received from the server. Only valid for
// OnHeadersReceived.
scoped_refptr<const net::HttpResponseHeaders> original_response_headers;
// Location where to override response headers. Only valid for
// OnHeadersReceived.
scoped_refptr<net::HttpResponseHeaders>* override_response_headers = nullptr;
// If non-empty, this contains the auth credentials that may be filled in.
// Only valid for OnAuthRequired.
net::AuthCredentials* auth_credentials = nullptr;
// The callback to invoke for auth. If |auth_callback.is_null()| is false,
// |callback| must be NULL.
// Only valid for OnAuthRequired.
net::NetworkDelegate::AuthCallback auth_callback;
// Time the request was paused. Used for logging purposes.
base::Time blocking_time;
// Changes requested by extensions.
helpers::EventResponseDeltas response_deltas;
// Provider of meta data about extensions, only used and non-NULL for events
// that are delayed until the rules registry is ready.
const InfoMap* extension_info_map = nullptr;
};
bool ExtensionWebRequestEventRouter::RequestFilter::InitFromValue(
const base::DictionaryValue& value, std::string* error) {
if (!value.HasKey("urls"))
return false;
for (base::DictionaryValue::Iterator it(value); !it.IsAtEnd(); it.Advance()) {
if (it.key() == "urls") {
const base::ListValue* urls_value = NULL;
if (!it.value().GetAsList(&urls_value))
return false;
for (size_t i = 0; i < urls_value->GetSize(); ++i) {
std::string url;
URLPattern pattern(URLPattern::SCHEME_HTTP | URLPattern::SCHEME_HTTPS |
URLPattern::SCHEME_FTP | URLPattern::SCHEME_FILE |
URLPattern::SCHEME_EXTENSION |
URLPattern::SCHEME_WS | URLPattern::SCHEME_WSS);
if (!urls_value->GetString(i, &url) ||
pattern.Parse(url) != URLPattern::ParseResult::kSuccess) {
*error = ErrorUtils::FormatErrorMessage(
keys::kInvalidRequestFilterUrl, url);
return false;
}
urls.AddPattern(pattern);
}
} else if (it.key() == "types") {
const base::ListValue* types_value = NULL;
if (!it.value().GetAsList(&types_value))
return false;
for (size_t i = 0; i < types_value->GetSize(); ++i) {
std::string type_str;
types.push_back(WebRequestResourceType::OTHER);
if (!types_value->GetString(i, &type_str) ||
!ParseWebRequestResourceType(type_str, &types.back())) {
return false;
}
}
} else if (it.key() == "tabId") {
if (!it.value().GetAsInteger(&tab_id))
return false;
} else if (it.key() == "windowId") {
if (!it.value().GetAsInteger(&window_id))
return false;
} else {
return false;
}
}
return true;
}
ExtensionWebRequestEventRouter::EventResponse::EventResponse(
const std::string& extension_id, const base::Time& extension_install_time)
: extension_id(extension_id),
extension_install_time(extension_install_time),
cancel(false) {
}
ExtensionWebRequestEventRouter::EventResponse::~EventResponse() {
}
ExtensionWebRequestEventRouter::RequestFilter::RequestFilter()
: tab_id(-1), window_id(-1) {}
ExtensionWebRequestEventRouter::RequestFilter::~RequestFilter() = default;
ExtensionWebRequestEventRouter::RequestFilter::RequestFilter(
const RequestFilter& other)
: urls(other.urls.Clone()),
types(other.types),
tab_id(other.tab_id),
window_id(other.window_id) {}
ExtensionWebRequestEventRouter::RequestFilter&
ExtensionWebRequestEventRouter::RequestFilter::operator=(
const RequestFilter& other) {
urls = other.urls.Clone();
types = other.types;
tab_id = other.tab_id;
window_id = other.window_id;
return *this;
}
//
// ExtensionWebRequestEventRouter
//
// static
ExtensionWebRequestEventRouter* ExtensionWebRequestEventRouter::GetInstance() {
static base::NoDestructor<ExtensionWebRequestEventRouter> instance;
return instance.get();
}
ExtensionWebRequestEventRouter::ExtensionWebRequestEventRouter()
: request_time_tracker_(new ExtensionWebRequestTimeTracker) {
}
void ExtensionWebRequestEventRouter::RegisterRulesRegistry(
void* browser_context,
int rules_registry_id,
scoped_refptr<WebRequestRulesRegistry> rules_registry) {
RulesRegistryKey key(browser_context, rules_registry_id);
if (rules_registry.get())
rules_registries_[key] = rules_registry;
else
rules_registries_.erase(key);
}
int ExtensionWebRequestEventRouter::OnBeforeRequest(
void* browser_context,
const InfoMap* extension_info_map,
WebRequestInfo* request,
net::CompletionOnceCallback callback,
GURL* new_url,
bool* should_collapse_initiator) {
DCHECK(should_collapse_initiator);
if (ShouldHideEvent(browser_context, extension_info_map, *request))
return net::OK;
if (IsPageLoad(*request))
NotifyPageLoad();
bool has_listener = false;
for (const auto& kv : listeners_[browser_context]) {
if (!kv.second.empty()) {
has_listener = true;
break;
}
}
request_time_tracker_->LogRequestStartTime(
request->id, base::TimeTicks::Now(), has_listener,
HasExtraHeadersListener(browser_context, extension_info_map, request));
const bool is_incognito_context = IsIncognitoBrowserContext(browser_context);
// Handle Declarative Net Request API rules. This gets preference over the Web
// Request and Declarative Web Request APIs. Only checking the rules in the
// OnBeforeRequest stage works, since the rules currently only depend on the
// request url, initiator and resource type, which should stay the same during
// the diffierent network request stages. A redirect should cause another
// OnBeforeRequest call.
// |extension_info_map| is null for system level requests.
if (extension_info_map) {
using Action = declarative_net_request::RulesetManager::Action;
Action action = extension_info_map->GetRulesetManager()->EvaluateRequest(
*request, is_incognito_context, new_url);
switch (action) {
case Action::NONE:
break;
case Action::BLOCK:
return net::ERR_BLOCKED_BY_CLIENT;
case Action::COLLAPSE:
*should_collapse_initiator = true;
return net::ERR_BLOCKED_BY_CLIENT;
case Action::REDIRECT:
return net::OK;
}
}
// Whether to initialized |blocked_requests_|.
bool initialize_blocked_requests = false;
initialize_blocked_requests |=
ProcessDeclarativeRules(browser_context, extension_info_map,
web_request::OnBeforeRequest::kEventName, request,
ON_BEFORE_REQUEST, nullptr);
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map,
web_request::OnBeforeRequest::kEventName, request, &extra_info_spec);
if (!listeners.empty() && !GetAndSetSignaled(request->id, kOnBeforeRequest)) {
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetRequestBody(request);
initialize_blocked_requests |=
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
if (!initialize_blocked_requests)
return net::OK; // Nobody saw a reason for modifying the request.
BlockedRequest& blocked_request = blocked_requests_[request->id];
blocked_request.event = kOnBeforeRequest;
blocked_request.is_incognito |= is_incognito_context;
blocked_request.request = request;
blocked_request.callback = std::move(callback);
blocked_request.new_url = new_url;
if (blocked_request.num_handlers_blocking == 0) {
// If there are no blocking handlers, only the declarative rules tried
// to modify the request and we can respond synchronously.
return ExecuteDeltas(browser_context, request, false /* call_callback*/);
}
return net::ERR_IO_PENDING;
}
int ExtensionWebRequestEventRouter::OnBeforeSendHeaders(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
net::CompletionOnceCallback callback,
net::HttpRequestHeaders* headers) {
if (ShouldHideEvent(browser_context, extension_info_map, *request))
return net::OK;
bool initialize_blocked_requests = false;
initialize_blocked_requests |= ProcessDeclarativeRules(
browser_context, extension_info_map, keys::kOnBeforeSendHeadersEvent,
request, ON_BEFORE_SEND_HEADERS, NULL);
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map, keys::kOnBeforeSendHeadersEvent,
request, &extra_info_spec);
if (!listeners.empty() &&
!GetAndSetSignaled(request->id, kOnBeforeSendHeaders)) {
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetRequestHeaders(*headers);
initialize_blocked_requests |=
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
UMA_HISTOGRAM_ENUMERATION(
"Extensions.WebRequest.OnBeforeSendHeadersEventResponse",
initialize_blocked_requests ? WebRequestEventResponse::kObserved
: WebRequestEventResponse::kIgnored);
if (!initialize_blocked_requests)
return net::OK; // Nobody saw a reason for modifying the request.
BlockedRequest& blocked_request = blocked_requests_[request->id];
blocked_request.event = kOnBeforeSendHeaders;
blocked_request.is_incognito |= IsIncognitoBrowserContext(browser_context);
blocked_request.request = request;
blocked_request.callback = std::move(callback);
blocked_request.request_headers = headers;
if (blocked_request.num_handlers_blocking == 0) {
// If there are no blocking handlers, only the declarative rules tried
// to modify the request and we can respond synchronously.
return ExecuteDeltas(browser_context, request, false /* call_callback*/);
}
return net::ERR_IO_PENDING;
}
void ExtensionWebRequestEventRouter::OnSendHeaders(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
const net::HttpRequestHeaders& headers) {
if (ShouldHideEvent(browser_context, extension_info_map, *request))
return;
if (GetAndSetSignaled(request->id, kOnSendHeaders))
return;
ClearSignaled(request->id, kOnBeforeRedirect);
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map, keys::kOnSendHeadersEvent, request,
&extra_info_spec);
if (listeners.empty())
return;
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetRequestHeaders(headers);
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
int ExtensionWebRequestEventRouter::OnHeadersReceived(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
net::CompletionOnceCallback callback,
const net::HttpResponseHeaders* original_response_headers,
scoped_refptr<net::HttpResponseHeaders>* override_response_headers,
GURL* allowed_unsafe_redirect_url) {
if (ShouldHideEvent(browser_context, extension_info_map, *request))
return net::OK;
bool initialize_blocked_requests = false;
initialize_blocked_requests |= ProcessDeclarativeRules(
browser_context, extension_info_map, keys::kOnHeadersReceivedEvent,
request, ON_HEADERS_RECEIVED, original_response_headers);
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map, keys::kOnHeadersReceivedEvent,
request, &extra_info_spec);
if (!listeners.empty() &&
!GetAndSetSignaled(request->id, kOnHeadersReceived)) {
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetResponseHeaders(*request, original_response_headers);
initialize_blocked_requests |=
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
UMA_HISTOGRAM_ENUMERATION(
"Extensions.WebRequest.OnHeadersReceivedEventResponse",
initialize_blocked_requests ? WebRequestEventResponse::kObserved
: WebRequestEventResponse::kIgnored);
if (!initialize_blocked_requests)
return net::OK; // Nobody saw a reason for modifying the request.
BlockedRequest& blocked_request = blocked_requests_[request->id];
blocked_request.event = kOnHeadersReceived;
blocked_request.is_incognito |= IsIncognitoBrowserContext(browser_context);
blocked_request.request = request;
blocked_request.callback = std::move(callback);
blocked_request.override_response_headers = override_response_headers;
blocked_request.original_response_headers = original_response_headers;
blocked_request.new_url = allowed_unsafe_redirect_url;
if (blocked_request.num_handlers_blocking == 0) {
// If there are no blocking handlers, only the declarative rules tried
// to modify the request and we can respond synchronously.
return ExecuteDeltas(browser_context, request, false /* call_callback*/);
}
return net::ERR_IO_PENDING;
}
net::NetworkDelegate::AuthRequiredResponse
ExtensionWebRequestEventRouter::OnAuthRequired(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
const net::AuthChallengeInfo& auth_info,
net::NetworkDelegate::AuthCallback callback,
net::AuthCredentials* credentials) {
// No browser_context means that this is for authentication challenges in the
// system context. Skip in that case. Also skip sensitive requests.
if (!browser_context ||
WebRequestPermissions::HideRequest(extension_info_map, *request)) {
return net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_NO_ACTION;
}
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map, keys::kOnAuthRequiredEvent, request,
&extra_info_spec);
if (listeners.empty())
return net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_NO_ACTION;
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetResponseHeaders(*request, request->response_headers.get());
event_details->SetAuthInfo(auth_info);
if (DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details))) {
BlockedRequest& blocked_request = blocked_requests_[request->id];
blocked_request.event = kOnAuthRequired;
blocked_request.is_incognito |= IsIncognitoBrowserContext(browser_context);
blocked_request.request = request;
blocked_request.auth_callback = std::move(callback);
blocked_request.auth_credentials = credentials;
return net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_IO_PENDING;
}
return net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_NO_ACTION;
}
void ExtensionWebRequestEventRouter::OnBeforeRedirect(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
const GURL& new_location) {
if (ShouldHideEvent(browser_context, extension_info_map, *request))
return;
if (GetAndSetSignaled(request->id, kOnBeforeRedirect))
return;
ClearSignaled(request->id, kOnBeforeRequest);
ClearSignaled(request->id, kOnBeforeSendHeaders);
ClearSignaled(request->id, kOnSendHeaders);
ClearSignaled(request->id, kOnHeadersReceived);
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map, keys::kOnBeforeRedirectEvent,
request, &extra_info_spec);
if (listeners.empty())
return;
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetResponseHeaders(*request, request->response_headers.get());
event_details->SetResponseSource(*request);
event_details->SetString(keys::kRedirectUrlKey, new_location.spec());
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
void ExtensionWebRequestEventRouter::OnResponseStarted(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
int net_error) {
DCHECK_NE(net::ERR_IO_PENDING, net_error);
if (ShouldHideEvent(browser_context, extension_info_map, *request))
return;
// OnResponseStarted is even triggered, when the request was cancelled.
if (net_error != net::OK)
return;
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map, keys::kOnResponseStartedEvent,
request, &extra_info_spec);
if (listeners.empty())
return;
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetResponseHeaders(*request, request->response_headers.get());
event_details->SetResponseSource(*request);
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
void ExtensionWebRequestEventRouter::OnCompleted(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
int net_error) {
// We hide events from the system context as well as sensitive requests.
// However, if the request first became sensitive after redirecting we have
// already signaled it and thus we have to signal the end of it. This is
// risk-free because the handler cannot modify the request now.
if (!browser_context ||
(WebRequestPermissions::HideRequest(extension_info_map, *request) &&
!WasSignaled(*request))) {
return;
}
request_time_tracker_->LogRequestEndTime(request->id, base::TimeTicks::Now());
// See comment in OnErrorOccurred regarding net::ERR_WS_UPGRADE.
DCHECK(net_error == net::OK || net_error == net::ERR_WS_UPGRADE);
DCHECK(!GetAndSetSignaled(request->id, kOnCompleted));
ClearPendingCallbacks(*request);
int extra_info_spec = 0;
RawListeners listeners =
GetMatchingListeners(browser_context, extension_info_map,
keys::kOnCompletedEvent, request, &extra_info_spec);
if (listeners.empty())
return;
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
event_details->SetResponseHeaders(*request, request->response_headers.get());
event_details->SetResponseSource(*request);
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
void ExtensionWebRequestEventRouter::OnErrorOccurred(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
bool started,
int net_error) {
// When WebSocket handshake request finishes, the request is cancelled with an
// ERR_WS_UPGRADE code (see WebSocketStreamRequestImpl::PerformUpgrade).
// WebRequest API reports this as a completed request.
if (net_error == net::ERR_WS_UPGRADE) {
OnCompleted(browser_context, extension_info_map, request, net_error);
return;
}
ExtensionsBrowserClient* client = ExtensionsBrowserClient::Get();
if (!client) {
// |client| could be NULL during shutdown.
return;
}
// We hide events from the system context as well as sensitive requests.
// However, if the request first became sensitive after redirecting we have
// already signaled it and thus we have to signal the end of it. This is
// risk-free because the handler cannot modify the request now.
if (!browser_context ||
(WebRequestPermissions::HideRequest(extension_info_map, *request) &&
!WasSignaled(*request))) {
return;
}
request_time_tracker_->LogRequestEndTime(request->id, base::TimeTicks::Now());
DCHECK_NE(net::OK, net_error);
DCHECK_NE(net::ERR_IO_PENDING, net_error);
DCHECK(!GetAndSetSignaled(request->id, kOnErrorOccurred));
ClearPendingCallbacks(*request);
int extra_info_spec = 0;
RawListeners listeners = GetMatchingListeners(
browser_context, extension_info_map,
web_request::OnErrorOccurred::kEventName, request, &extra_info_spec);
if (listeners.empty())
return;
std::unique_ptr<WebRequestEventDetails> event_details(
CreateEventDetails(*request, extra_info_spec));
if (started)
event_details->SetResponseSource(*request);
else
event_details->SetBoolean(keys::kFromCache, request->response_from_cache);
event_details->SetString(keys::kErrorKey, net::ErrorToString(net_error));
DispatchEvent(browser_context, extension_info_map, request, listeners,
std::move(event_details));
}
void ExtensionWebRequestEventRouter::OnRequestWillBeDestroyed(
void* browser_context,
const WebRequestInfo* request) {
ClearPendingCallbacks(*request);
signaled_requests_.erase(request->id);
request_time_tracker_->LogRequestEndTime(request->id, base::TimeTicks::Now());
}
void ExtensionWebRequestEventRouter::ClearPendingCallbacks(
const WebRequestInfo& request) {
blocked_requests_.erase(request.id);
}
bool ExtensionWebRequestEventRouter::DispatchEvent(
void* browser_context,
const InfoMap* extension_info_map,
const WebRequestInfo* request,
const RawListeners& listeners,
std::unique_ptr<WebRequestEventDetails> event_details) {
// TODO(mpcomplete): Consider consolidating common (extension_id,json_args)
// pairs into a single message sent to a list of sub_event_names.
int num_handlers_blocking = 0;
std::unique_ptr<ListenerIDs> listeners_to_dispatch(new ListenerIDs);
listeners_to_dispatch->reserve(listeners.size());
for (EventListener* listener : listeners) {
listeners_to_dispatch->push_back(listener->id);
if (listener->extra_info_spec &
(ExtraInfoSpec::BLOCKING | ExtraInfoSpec::ASYNC_BLOCKING)) {
listener->blocked_requests.insert(request->id);
// If this is the first delegate blocking the request, go ahead and log
// it.
if (num_handlers_blocking == 0) {
std::string delegate_info = l10n_util::GetStringFUTF8(
IDS_LOAD_STATE_PARAMETER_EXTENSION,
base::UTF8ToUTF16(listener->extension_name));
request->logger->LogBlockedBy(delegate_info);
}
++num_handlers_blocking;
}
}
if (request->frame_data) {
// We may already have FrameData if this is a browser-side navigation, or
// if the relevant FrameData was already cached on the IO thread at the time
// of request creation. In that case we can dispatch immediately.
event_details->SetFrameData(request->frame_data.value());
DispatchEventToListeners(browser_context, extension_info_map,
std::move(listeners_to_dispatch),
std::move(event_details));
} else {
// We don't have FrameData available yet, so fetch it asynchronously. This
// event will be dispatched once that operation completes. Unretained is
// safe here because the ExtensionWebRequestEventRouter singleton is leaked.
event_details.release()->DetermineFrameDataOnIO(
base::Bind(&ExtensionWebRequestEventRouter::DispatchEventToListeners,
base::Unretained(this), browser_context,
base::RetainedRef(extension_info_map),
base::Passed(&listeners_to_dispatch)));
}
if (num_handlers_blocking > 0) {
BlockedRequest& blocked_request = blocked_requests_[request->id];
blocked_request.request = request;
blocked_request.is_incognito |= IsIncognitoBrowserContext(browser_context);
blocked_request.num_handlers_blocking += num_handlers_blocking;
blocked_request.blocking_time = base::Time::Now();
return true;
}
return false;
}
void ExtensionWebRequestEventRouter::DispatchEventToListeners(
void* browser_context,
const InfoMap* extension_info_map,
std::unique_ptr<ListenerIDs> listener_ids,
std::unique_ptr<WebRequestEventDetails> event_details) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!listener_ids->empty());
DCHECK(event_details.get());
std::string event_name =
EventRouter::GetBaseEventName((*listener_ids)[0].sub_event_name);
DCHECK(IsWebRequestEvent(event_name));
Listeners& event_listeners = listeners_[browser_context][event_name];
void* cross_browser_context = GetCrossBrowserContext(browser_context);
Listeners* cross_event_listeners =
cross_browser_context ? &listeners_[cross_browser_context][event_name]
: nullptr;
std::unique_ptr<WebRequestEventDetails> event_details_filtered_copy;
for (const EventListener::ID& id : *listener_ids) {
// It's possible that the listener is no longer present. Check to make sure
// it's still there.
const EventListener* listener =
FindEventListenerInContainer(id, event_listeners);
if (!listener && cross_event_listeners) {
listener = FindEventListenerInContainer(id, *cross_event_listeners);
}
if (!listener)
continue;
if (!listener->ipc_sender.get())
continue;
// Filter out the optional keys that this listener didn't request.
std::unique_ptr<base::ListValue> args_filtered(new base::ListValue);
void* cross_browser_context = GetCrossBrowserContext(browser_context);
// In Public Sessions we want to restrict access to security or privacy
// sensitive data. Data is filtered for *all* listeners, not only extensions
// which are force-installed by policy. Whitelisted extensions are exempt
// from this filtering.
WebRequestEventDetails* custom_event_details = event_details.get();
if (ArePublicSessionRestrictionsEnabled() &&
!extensions::IsWhitelistedForPublicSession(listener->id.extension_id)) {
if (!event_details_filtered_copy) {
event_details_filtered_copy =
event_details->CreatePublicSessionCopy();
}
custom_event_details = event_details_filtered_copy.get();
}
args_filtered->Append(custom_event_details->GetFilteredDict(
listener->extra_info_spec, extension_info_map,
listener->id.extension_id, (cross_browser_context != 0)));
EventRouter::DispatchEventToSender(
listener->ipc_sender.get(), browser_context, listener->id.extension_id,
listener->histogram_value, listener->id.sub_event_name,
std::move(args_filtered), EventRouter::USER_GESTURE_UNKNOWN,
EventFilteringInfo());
}
}
void ExtensionWebRequestEventRouter::OnEventHandled(
void* browser_context,
const std::string& extension_id,
const std::string& event_name,
const std::string& sub_event_name,
uint64_t request_id,
EventResponse* response) {
int extra_info_spec = 0;
// TODO(robwu): This ignores WebViews.
Listeners& listeners = listeners_[browser_context][event_name];
EventListener::ID id(browser_context, extension_id, sub_event_name, 0, 0);
for (auto it = listeners.begin(); it != listeners.end(); ++it) {
// TODO(karandeepb): Investigate if this ever matches more than one
// listener.
if ((*it)->id.LooselyMatches(id)) {
(*it)->blocked_requests.erase(request_id);
extra_info_spec |= (*it)->extra_info_spec;
}
}
DecrementBlockCount(browser_context, extension_id, event_name, request_id,
response, extra_info_spec);
}
bool ExtensionWebRequestEventRouter::AddEventListener(
void* browser_context,
const std::string& extension_id,
const std::string& extension_name,
events::HistogramValue histogram_value,
const std::string& event_name,
const std::string& sub_event_name,
const RequestFilter& filter,
int extra_info_spec,
int embedder_process_id,
int web_view_instance_id,
base::WeakPtr<IPC::Sender> ipc_sender) {
if (!IsWebRequestEvent(event_name))
return false;
if (event_name != EventRouter::GetBaseEventName(sub_event_name))
return false;
EventListener::ID id(browser_context, extension_id, sub_event_name,
embedder_process_id, web_view_instance_id);
if (FindEventListener(id) != nullptr) {
// This is likely an abuse of the API by a malicious extension.
return false;
}
std::unique_ptr<EventListener> listener(new EventListener(id));
listener->extension_name = extension_name;
listener->histogram_value = histogram_value;
listener->filter = filter;
listener->extra_info_spec = extra_info_spec;
listener->ipc_sender = ipc_sender;
if (web_view_instance_id) {
base::RecordAction(
base::UserMetricsAction("WebView.WebRequest.AddListener"));
}
RecordAddEventListenerUMAs(extra_info_spec);
listeners_[browser_context][event_name].push_back(std::move(listener));
return true;
}
size_t ExtensionWebRequestEventRouter::GetListenerCountForTesting(
void* browser_context,
const std::string& event_name) {
return listeners_[browser_context][event_name].size();
}
ExtensionWebRequestEventRouter::EventListener*
ExtensionWebRequestEventRouter::FindEventListener(const EventListener::ID& id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
std::string event_name = EventRouter::GetBaseEventName(id.sub_event_name);
Listeners& listeners = listeners_[id.browser_context][event_name];
return FindEventListenerInContainer(id, listeners);
}
ExtensionWebRequestEventRouter::EventListener*
ExtensionWebRequestEventRouter::FindEventListenerInContainer(
const EventListener::ID& id,
Listeners& listeners) {
for (auto it = listeners.begin(); it != listeners.end(); ++it) {
if ((*it)->id == id) {
return it->get();
}
}
return nullptr;
}
void ExtensionWebRequestEventRouter::RemoveEventListener(
const EventListener::ID& id,
bool strict) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
std::string event_name = EventRouter::GetBaseEventName(id.sub_event_name);
Listeners& listeners = listeners_[id.browser_context][event_name];
for (auto it = listeners.begin(); it != listeners.end(); ++it) {
std::unique_ptr<EventListener>& listener = *it;
// There are two places that call this method: RemoveWebViewEventListeners
// and OnListenerRemoved. The latter can't use operator== because it doesn't
// have the embedder_process_id. This shouldn't be a problem, because
// OnListenerRemoved is only called for web_view_instance_id == 0.
bool matches =
strict ? listener->id == id : listener->id.LooselyMatches(id);
if (matches) {
// Unblock any request that this event listener may have been blocking.
for (uint64_t blocked_request_id : listener->blocked_requests)
DecrementBlockCount(
listener->id.browser_context, listener->id.extension_id, event_name,
blocked_request_id, nullptr, 0 /* extra_info_spec */);
listeners.erase(it);
helpers::ClearCacheOnNavigation();
return;
}
}
}
void ExtensionWebRequestEventRouter::RemoveWebViewEventListeners(
void* browser_context,
int embedder_process_id,
int web_view_instance_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Iterate over all listeners of all WebRequest events to delete
// any listeners that belong to the provided <webview>.
ListenerMapForBrowserContext& map_for_browser_context =
listeners_[browser_context];
for (const auto& event_iter : map_for_browser_context) {
// Construct a listeners_to_delete vector so that we don't modify the set of
// listeners as we iterate through it.
std::vector<EventListener::ID> listeners_to_delete;
const Listeners& listeners = event_iter.second;
for (const auto& listener : listeners) {
if (listener->id.embedder_process_id == embedder_process_id &&
listener->id.web_view_instance_id == web_view_instance_id) {
listeners_to_delete.push_back(listener->id);
}
}
// Remove the listeners selected for deletion.
for (const auto& listener_id : listeners_to_delete)
RemoveEventListener(listener_id, true /* strict */);
}
}
void ExtensionWebRequestEventRouter::OnOTRBrowserContextCreated(
void* original_browser_context, void* otr_browser_context) {
cross_browser_context_map_[original_browser_context] =
std::make_pair(false, otr_browser_context);
cross_browser_context_map_[otr_browser_context] =
std::make_pair(true, original_browser_context);
}
void ExtensionWebRequestEventRouter::OnOTRBrowserContextDestroyed(
void* original_browser_context, void* otr_browser_context) {
cross_browser_context_map_.erase(otr_browser_context);
cross_browser_context_map_.erase(original_browser_context);
}
void ExtensionWebRequestEventRouter::AddCallbackForPageLoad(
const base::Closure& callback) {
callbacks_for_page_load_.push_back(callback);
}
bool ExtensionWebRequestEventRouter::HasExtraHeadersListener(
void* browser_context,
const extensions::InfoMap* extension_info_map,
const WebRequestInfo* request) {
static const char* kEventNames[] = {
keys::kOnBeforeSendHeadersEvent, keys::kOnSendHeadersEvent,
keys::kOnHeadersReceivedEvent, keys::kOnAuthRequiredEvent,
keys::kOnResponseStartedEvent, keys::kOnBeforeRedirectEvent,
keys::kOnCompletedEvent,
};
int extra_info_spec = 0;
for (const char* name : kEventNames) {
GetMatchingListeners(browser_context, extension_info_map, name, request,
&extra_info_spec);
if (extra_info_spec & ExtraInfoSpec::EXTRA_HEADERS)
return true;
}
return false;
}
bool ExtensionWebRequestEventRouter::IsPageLoad(
const WebRequestInfo& request) const {
return request.type == content::RESOURCE_TYPE_MAIN_FRAME;
}
void ExtensionWebRequestEventRouter::NotifyPageLoad() {
for (const auto& callback : callbacks_for_page_load_)
callback.Run();
callbacks_for_page_load_.clear();
}
void* ExtensionWebRequestEventRouter::GetCrossBrowserContext(
void* browser_context) const {
auto cross_browser_context = cross_browser_context_map_.find(browser_context);
if (cross_browser_context == cross_browser_context_map_.end())
return NULL;
return cross_browser_context->second.second;
}
bool ExtensionWebRequestEventRouter::IsIncognitoBrowserContext(
void* browser_context) const {
auto cross_browser_context = cross_browser_context_map_.find(browser_context);
if (cross_browser_context == cross_browser_context_map_.end())
return false;
return cross_browser_context->second.first;
}
bool ExtensionWebRequestEventRouter::WasSignaled(
const WebRequestInfo& request) const {
auto flag = signaled_requests_.find(request.id);
return flag != signaled_requests_.end() && flag->second != 0;
}
void ExtensionWebRequestEventRouter::GetMatchingListenersImpl(
void* browser_context,
const WebRequestInfo* request,
const InfoMap* extension_info_map,
bool crosses_incognito,
const std::string& event_name,
bool is_request_from_extension,
int* extra_info_spec,
RawListeners* matching_listeners) {
std::string web_request_event_name(event_name);
if (request->is_web_view) {
web_request_event_name.replace(
0, sizeof(kWebRequestEventPrefix) - 1, webview::kWebViewEventPrefix);
}
Listeners& listeners = listeners_[browser_context][web_request_event_name];
for (std::unique_ptr<EventListener>& listener : listeners) {
if (!listener->ipc_sender.get()) {
// The IPC sender has been deleted. This listener will be removed soon
// via a call to RemoveEventListener. For now, just skip it.
continue;
}
if (request->is_web_view) {
// If this is a PlzNavigate request, then we can skip this check. IDs will
// be -1 and the request is trusted.
if (!request->is_browser_side_navigation &&
(listener->id.embedder_process_id !=
request->web_view_embedder_process_id)) {
continue;
}
if (listener->id.web_view_instance_id != request->web_view_instance_id)
continue;
}
// Filter requests from other extensions / apps. This does not work for
// content scripts, or extension pages in non-extension processes.
if (is_request_from_extension &&
listener->id.embedder_process_id != request->render_process_id) {
continue;
}
if (!listener->filter.urls.is_empty() &&
!listener->filter.urls.MatchesURL(request->url)) {
continue;
}
// Check if the tab id and window id match, if they were set in the
// listener params.
if ((listener->filter.tab_id != -1 && request->frame_data &&
request->frame_data->tab_id != listener->filter.tab_id) ||
(listener->filter.window_id != -1 && request->frame_data &&
request->frame_data->window_id != listener->filter.window_id)) {
continue;
}
const std::vector<WebRequestResourceType>& types = listener->filter.types;
if (!types.empty() &&
!base::ContainsValue(types, request->web_request_type)) {
continue;
}
if (!request->is_web_view) {
PermissionsData::PageAccess access =
WebRequestPermissions::CanExtensionAccessURL(
extension_info_map, listener->id.extension_id, request->url,
request->frame_data ? request->frame_data->tab_id : -1,
crosses_incognito,
WebRequestPermissions::
REQUIRE_HOST_PERMISSION_FOR_URL_AND_INITIATOR,
request->initiator);
if (access != PermissionsData::PageAccess::kAllowed) {
if (access == PermissionsData::PageAccess::kWithheld) {
DCHECK(ExtensionsAPIClient::Get());
ExtensionsAPIClient::Get()->NotifyWebRequestWithheld(
request->render_process_id, request->frame_id,
listener->id.extension_id);
}
continue;
}
}
bool blocking_listener =
(listener->extra_info_spec &
(ExtraInfoSpec::BLOCKING | ExtraInfoSpec::ASYNC_BLOCKING)) != 0;
// We do not want to notify extensions about XHR requests that are
// triggered by themselves. This is a workaround to prevent deadlocks
// in case of synchronous XHR requests that block the extension renderer
// and therefore prevent the extension from processing the request
// handler. This is only a problem for blocking listeners.
// http://crbug.com/105656
bool synchronous_xhr_from_extension =
!request->is_async && is_request_from_extension &&
request->web_request_type == WebRequestResourceType::XHR;
// Only send webRequest events for URLs the extension has access to.
if (blocking_listener && synchronous_xhr_from_extension)
continue;
matching_listeners->push_back(listener.get());
*extra_info_spec |= listener->extra_info_spec;
}
}
ExtensionWebRequestEventRouter::RawListeners
ExtensionWebRequestEventRouter::GetMatchingListeners(
void* browser_context,
const InfoMap* extension_info_map,
const std::string& event_name,
const WebRequestInfo* request,
int* extra_info_spec) {
// TODO(mpcomplete): handle browser_context == NULL (should collect all
// listeners).
*extra_info_spec = 0;
bool is_request_from_extension =
IsRequestFromExtension(*request, extension_info_map);
RawListeners matching_listeners;
GetMatchingListenersImpl(browser_context, request, extension_info_map, false,
event_name, is_request_from_extension,
extra_info_spec, &matching_listeners);
void* cross_browser_context = GetCrossBrowserContext(browser_context);
if (cross_browser_context) {
GetMatchingListenersImpl(cross_browser_context, request, extension_info_map,
true, event_name, is_request_from_extension,
extra_info_spec, &matching_listeners);
}
return matching_listeners;
}
namespace {
helpers::EventResponseDelta CalculateDelta(
ExtensionWebRequestEventRouter::BlockedRequest* blocked_request,
ExtensionWebRequestEventRouter::EventResponse* response,
int extra_info_spec) {
switch (blocked_request->event) {
case ExtensionWebRequestEventRouter::kOnBeforeRequest:
return helpers::CalculateOnBeforeRequestDelta(
response->extension_id, response->extension_install_time,
response->cancel, response->new_url);
case ExtensionWebRequestEventRouter::kOnBeforeSendHeaders: {
net::HttpRequestHeaders* old_headers = blocked_request->request_headers;
net::HttpRequestHeaders* new_headers = response->request_headers.get();
return helpers::CalculateOnBeforeSendHeadersDelta(
response->extension_id, response->extension_install_time,
response->cancel, old_headers, new_headers, extra_info_spec);
}
case ExtensionWebRequestEventRouter::kOnHeadersReceived: {
const net::HttpResponseHeaders* old_headers =
blocked_request->original_response_headers.get();
helpers::ResponseHeaders* new_headers =
response->response_headers.get();
return helpers::CalculateOnHeadersReceivedDelta(
response->extension_id, response->extension_install_time,
response->cancel, blocked_request->request->url, response->new_url,
old_headers, new_headers, extra_info_spec);
}
case ExtensionWebRequestEventRouter::kOnAuthRequired:
return helpers::CalculateOnAuthRequiredDelta(
response->extension_id, response->extension_install_time,
response->cancel, response->auth_credentials);
default:
NOTREACHED();
return helpers::EventResponseDelta("", base::Time());
}
}
std::unique_ptr<base::Value> SerializeResponseHeaders(
const helpers::ResponseHeaders& headers) {
auto serialized_headers = std::make_unique<base::ListValue>();
for (const auto& it : headers) {
serialized_headers->Append(
helpers::CreateHeaderDictionary(it.first, it.second));
}
return std::move(serialized_headers);
}
// Convert a RequestCookieModifications/ResponseCookieModifications object to a
// base::ListValue which summarizes the changes made. This is templated since
// the two types (request/response) are different but contain essentially the
// same fields.
template <typename CookieType>
std::unique_ptr<base::ListValue> SummarizeCookieModifications(
const std::vector<CookieType>& modifications) {
auto cookie_modifications = std::make_unique<base::ListValue>();
for (const CookieType& mod : modifications) {
auto summary = std::make_unique<base::DictionaryValue>();
switch (mod.type) {
case helpers::ADD:
summary->SetString(activity_log::kCookieModificationTypeKey,
activity_log::kCookieModificationAdd);
break;
case helpers::EDIT:
summary->SetString(activity_log::kCookieModificationTypeKey,
activity_log::kCookieModificationEdit);
break;
case helpers::REMOVE:
summary->SetString(activity_log::kCookieModificationTypeKey,
activity_log::kCookieModificationRemove);
break;
}
if (mod.filter) {
if (mod.filter->name) {
summary->SetString(activity_log::kCookieFilterNameKey,
*mod.modification->name);
}
if (mod.filter->domain) {
summary->SetString(activity_log::kCookieFilterDomainKey,
*mod.modification->name);
}
}
if (mod.modification) {
if (mod.modification->name) {
summary->SetString(activity_log::kCookieModDomainKey,
*mod.modification->name);
}
if (mod.modification->domain) {
summary->SetString(activity_log::kCookieModDomainKey,
*mod.modification->name);
}
}
cookie_modifications->Append(std::move(summary));
}
return cookie_modifications;
}
// Converts an EventResponseDelta object to a dictionary value suitable for the
// activity log.
std::unique_ptr<base::DictionaryValue> SummarizeResponseDelta(
const std::string& event_name,
const helpers::EventResponseDelta& delta) {
std::unique_ptr<base::DictionaryValue> details(new base::DictionaryValue());
if (delta.cancel)
details->SetBoolean(activity_log::kCancelKey, true);
if (!delta.new_url.is_empty())
details->SetString(activity_log::kNewUrlKey, delta.new_url.spec());
std::unique_ptr<base::ListValue> modified_headers(new base::ListValue());
net::HttpRequestHeaders::Iterator iter(delta.modified_request_headers);
while (iter.GetNext()) {
modified_headers->Append(
helpers::CreateHeaderDictionary(iter.name(), iter.value()));
}
if (!modified_headers->empty()) {
details->Set(activity_log::kModifiedRequestHeadersKey,
std::move(modified_headers));
}
std::unique_ptr<base::ListValue> deleted_headers(new base::ListValue());
deleted_headers->AppendStrings(delta.deleted_request_headers);
if (!deleted_headers->empty()) {
details->Set(activity_log::kDeletedRequestHeadersKey,
std::move(deleted_headers));
}
if (!delta.added_response_headers.empty()) {
details->Set(activity_log::kAddedRequestHeadersKey,
SerializeResponseHeaders(delta.added_response_headers));
}
if (!delta.deleted_response_headers.empty()) {
details->Set(activity_log::kDeletedResponseHeadersKey,
SerializeResponseHeaders(delta.deleted_response_headers));
}
if (delta.auth_credentials.has_value()) {
details->SetString(
activity_log::kAuthCredentialsKey,
base::UTF16ToUTF8(delta.auth_credentials->username()) + ":*");
}
if (!delta.response_cookie_modifications.empty()) {
details->Set(
activity_log::kResponseCookieModificationsKey,
SummarizeCookieModifications(delta.response_cookie_modifications));
}
return details;
}
} // namespace
void ExtensionWebRequestEventRouter::DecrementBlockCount(
void* browser_context,
const std::string& extension_id,
const std::string& event_name,
uint64_t request_id,
EventResponse* response,
int extra_info_spec) {
std::unique_ptr<EventResponse> response_scoped(response);
// It's possible that this request was deleted, or cancelled by a previous
// event handler. If so, ignore this response.
auto it = blocked_requests_.find(request_id);
if (it == blocked_requests_.end())
return;
BlockedRequest& blocked_request = it->second;
int num_handlers_blocking = --blocked_request.num_handlers_blocking;
CHECK_GE(num_handlers_blocking, 0);
if (response) {
helpers::EventResponseDelta delta =
CalculateDelta(&blocked_request, response, extra_info_spec);
activity_monitor::OnWebRequestApiUsed(
static_cast<content::BrowserContext*>(browser_context), extension_id,
blocked_request.request->url, blocked_request.is_incognito, event_name,
SummarizeResponseDelta(event_name, delta));
blocked_request.response_deltas.push_back(std::move(delta));
}
if (num_handlers_blocking == 0) {
blocked_request.request->logger->LogUnblocked();
ExecuteDeltas(browser_context, blocked_request.request, true);
} else {
// Log that the request was blocked by an extension.
Listeners& listeners = listeners_[browser_context][event_name];
for (const auto& listener : listeners) {
if (!base::ContainsKey(listener->blocked_requests, request_id))
continue;
std::string delegate_info = l10n_util::GetStringFUTF8(
IDS_LOAD_STATE_PARAMETER_EXTENSION,
base::UTF8ToUTF16(listener->extension_name));
blocked_request.request->logger->LogBlockedBy(delegate_info);
break;
}
}
}
void ExtensionWebRequestEventRouter::SendMessages(
void* browser_context,
const BlockedRequest& blocked_request) {
const helpers::EventResponseDeltas& deltas = blocked_request.response_deltas;
for (const auto& delta : deltas) {
const std::set<std::string>& messages = delta.messages_to_extension;
for (const std::string& message : messages) {
std::unique_ptr<WebRequestEventDetails> event_details(CreateEventDetails(
*blocked_request.request, /* extra_info_spec */ 0));
event_details->SetString(keys::kMessageKey, message);
event_details->SetString(keys::kStageKey,
GetRequestStageAsString(blocked_request.event));
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::UI},
base::Bind(&SendOnMessageEventOnUI, browser_context,
delta.extension_id, blocked_request.request->is_web_view,
blocked_request.request->web_view_instance_id,
base::Passed(&event_details)));
}
}
}
int ExtensionWebRequestEventRouter::ExecuteDeltas(void* browser_context,
const WebRequestInfo* request,
bool call_callback) {
BlockedRequest& blocked_request = blocked_requests_[request->id];
CHECK_EQ(0, blocked_request.num_handlers_blocking);
helpers::EventResponseDeltas& deltas = blocked_request.response_deltas;
base::TimeDelta block_time =
base::Time::Now() - blocked_request.blocking_time;
request_time_tracker_->IncrementTotalBlockTime(request->id, block_time);
bool request_headers_modified = false;
bool response_headers_modified = false;
bool credentials_set = false;
deltas.sort(&helpers::InDecreasingExtensionInstallationTimeOrder);
bool canceled = false;
helpers::MergeCancelOfResponses(blocked_request.response_deltas, &canceled,
request->logger.get());
extension_web_request_api_helpers::IgnoredActions ignored_actions;
if (blocked_request.event == kOnBeforeRequest) {
CHECK(!blocked_request.callback.is_null());
helpers::MergeOnBeforeRequestResponses(
request->url, blocked_request.response_deltas, blocked_request.new_url,
&ignored_actions, request->logger.get());
} else if (blocked_request.event == kOnBeforeSendHeaders) {
CHECK(!blocked_request.callback.is_null());
helpers::MergeOnBeforeSendHeadersResponses(
request->url, blocked_request.response_deltas,
blocked_request.request_headers, &ignored_actions,
request->logger.get(), &request_headers_modified);
} else if (blocked_request.event == kOnHeadersReceived) {
CHECK(!blocked_request.callback.is_null());
helpers::MergeOnHeadersReceivedResponses(
request->url, blocked_request.response_deltas,
blocked_request.original_response_headers.get(),
blocked_request.override_response_headers, blocked_request.new_url,
&ignored_actions, request->logger.get(), &response_headers_modified);
} else if (blocked_request.event == kOnAuthRequired) {
CHECK(blocked_request.callback.is_null());
CHECK(!blocked_request.auth_callback.is_null());
credentials_set = helpers::MergeOnAuthRequiredResponses(
blocked_request.response_deltas, blocked_request.auth_credentials,
&ignored_actions, request->logger.get());
} else {
NOTREACHED();
}
SendMessages(browser_context, blocked_request);
if (!ignored_actions.empty()) {
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::UI},
base::BindOnce(&NotifyIgnoredActionsOnUI, browser_context, request->id,
std::move(ignored_actions)));
}
const bool redirected =
blocked_request.new_url && !blocked_request.new_url->is_empty();
if (canceled)
request_time_tracker_->SetRequestCanceled(request->id);
else if (redirected)
request_time_tracker_->SetRequestRedirected(request->id);
// Log UMA metrics. Note: We are not necessarily concerned with the final
// action taken. Instead we are interested in how frequently the different
// actions are used by extensions. Hence multiple actions may be logged for a
// single delta execution.
if (canceled)
LogRequestAction(RequestAction::CANCEL);
if (redirected)
LogRequestAction(RequestAction::REDIRECT);
if (request_headers_modified)
LogRequestAction(RequestAction::MODIFY_REQUEST_HEADERS);
if (response_headers_modified)
LogRequestAction(RequestAction::MODIFY_RESPONSE_HEADERS);
if (credentials_set)
LogRequestAction(RequestAction::SET_AUTH_CREDENTIALS);
// This triggers onErrorOccurred if canceled is true.
int rv = canceled ? net::ERR_BLOCKED_BY_CLIENT : net::OK;
if (!blocked_request.callback.is_null()) {
net::CompletionOnceCallback callback = std::move(blocked_request.callback);
// Ensure that request is removed before callback because the callback
// might trigger the next event.
blocked_requests_.erase(request->id);
if (call_callback)
std::move(callback).Run(rv);
} else if (!blocked_request.auth_callback.is_null()) {
net::NetworkDelegate::AuthRequiredResponse response;
if (canceled)
response = net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_CANCEL_AUTH;
else if (credentials_set)
response = net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_SET_AUTH;
else
response = net::NetworkDelegate::AUTH_REQUIRED_RESPONSE_NO_ACTION;
net::NetworkDelegate::AuthCallback callback =
std::move(blocked_request.auth_callback);
blocked_requests_.erase(request->id);
if (call_callback)
std::move(callback).Run(response);
} else {
blocked_requests_.erase(request->id);
}
return rv;
}
bool ExtensionWebRequestEventRouter::ProcessDeclarativeRules(
void* browser_context,
const InfoMap* extension_info_map,
const std::string& event_name,
const WebRequestInfo* request,
RequestStage request_stage,
const net::HttpResponseHeaders* original_response_headers) {
int rules_registry_id = request->is_web_view
? request->web_view_rules_registry_id
: RulesRegistryService::kDefaultRulesRegistryID;
RulesRegistryKey rules_key(browser_context, rules_registry_id);
// If this check fails, check that the active stages are up to date in
// extensions/browser/api/declarative_webrequest/request_stage.h .
DCHECK(request_stage & kActiveStages);
// Rules of the current |browser_context| may apply but we need to check also
// whether there are applicable rules from extensions whose background page
// spans from regular to incognito mode.
// First parameter identifies the registry, the second indicates whether the
// registry belongs to the cross browser_context.
using RelevantRegistry = std::pair<WebRequestRulesRegistry*, bool>;
std::vector<RelevantRegistry> relevant_registries;
auto rules_key_it = rules_registries_.find(rules_key);
if (rules_key_it != rules_registries_.end()) {
relevant_registries.push_back(
std::make_pair(rules_key_it->second.get(), false));
}
void* cross_browser_context = GetCrossBrowserContext(browser_context);
RulesRegistryKey cross_browser_context_rules_key(cross_browser_context,
rules_registry_id);
if (cross_browser_context) {
auto it = rules_registries_.find(cross_browser_context_rules_key);
if (it != rules_registries_.end())
relevant_registries.push_back(std::make_pair(it->second.get(), true));
}
// The following block is experimentally enabled and its impact on load time
// logged with UMA Extensions.NetworkDelayRegistryLoad. crbug.com/175961
for (auto it : relevant_registries) {
WebRequestRulesRegistry* rules_registry = it.first;
if (rules_registry->ready().is_signaled())
continue;
// The rules registry is still loading. Block this request until it
// finishes.
// This Unretained is safe because the ExtensionWebRequestEventRouter
// singleton is leaked.
rules_registry->ready().Post(
FROM_HERE,
base::Bind(&ExtensionWebRequestEventRouter::OnRulesRegistryReady,
base::Unretained(this), browser_context, event_name,
request->id, request_stage));
BlockedRequest& blocked_request = blocked_requests_[request->id];
blocked_request.num_handlers_blocking++;
blocked_request.request = request;
blocked_request.is_incognito |= IsIncognitoBrowserContext(browser_context);
blocked_request.blocking_time = base::Time::Now();
blocked_request.original_response_headers = original_response_headers;
blocked_request.extension_info_map = extension_info_map;
return true;
}
if (request->is_web_view) {
const bool has_declarative_rules = !relevant_registries.empty();
UMA_HISTOGRAM_BOOLEAN(
"Extensions.DeclarativeWebRequest.WebViewRequestDeclarativeRules",
has_declarative_rules);
}
bool deltas_created = false;
for (const auto& it : relevant_registries) {
WebRequestRulesRegistry* rules_registry = it.first;
helpers::EventResponseDeltas result = rules_registry->CreateDeltas(
extension_info_map,
WebRequestData(request, request_stage, original_response_headers),
it.second);
if (!result.empty()) {
helpers::EventResponseDeltas& deltas =
blocked_requests_[request->id].response_deltas;
deltas.insert(deltas.end(), std::make_move_iterator(result.begin()),
std::make_move_iterator(result.end()));
deltas_created = true;
}
}
return deltas_created;
}
void ExtensionWebRequestEventRouter::OnRulesRegistryReady(
void* browser_context,
const std::string& event_name,
uint64_t request_id,
RequestStage request_stage) {
// It's possible that this request was deleted, or cancelled by a previous
// event handler. If so, ignore this response.
auto it = blocked_requests_.find(request_id);
if (it == blocked_requests_.end())
return;
BlockedRequest& blocked_request = it->second;
base::TimeDelta block_time =
base::Time::Now() - blocked_request.blocking_time;
UMA_HISTOGRAM_TIMES("Extensions.NetworkDelayRegistryLoad", block_time);
ProcessDeclarativeRules(browser_context, blocked_request.extension_info_map,
event_name, blocked_request.request, request_stage,
blocked_request.original_response_headers.get());
// Reset to null so that nobody relies on this being set.
blocked_request.extension_info_map = nullptr;
DecrementBlockCount(browser_context, std::string(), event_name, request_id,
nullptr, 0 /* extra_info_spec */);
}
bool ExtensionWebRequestEventRouter::GetAndSetSignaled(uint64_t request_id,
EventTypes event_type) {
auto iter = signaled_requests_.find(request_id);
if (iter == signaled_requests_.end()) {
signaled_requests_[request_id] = event_type;
return false;
}
bool was_signaled_before = (iter->second & event_type) != 0;
iter->second |= event_type;
return was_signaled_before;
}
void ExtensionWebRequestEventRouter::ClearSignaled(uint64_t request_id,
EventTypes event_type) {
auto iter = signaled_requests_.find(request_id);
if (iter == signaled_requests_.end())
return;
iter->second &= ~event_type;
}
// Special QuotaLimitHeuristic for WebRequestHandlerBehaviorChangedFunction.
//
// Each call of webRequest.handlerBehaviorChanged() clears the in-memory cache
// of WebKit at the time of the next page load (top level navigation event).
// This quota heuristic is intended to limit the number of times the cache is
// cleared by an extension.
//
// As we want to account for the number of times the cache is really cleared
// (opposed to the number of times webRequest.handlerBehaviorChanged() is
// called), we cannot decide whether a call of
// webRequest.handlerBehaviorChanged() should trigger a quota violation at the
// time it is called. Instead we only decrement the bucket counter at the time
// when the cache is cleared (when page loads happen).
class ClearCacheQuotaHeuristic : public QuotaLimitHeuristic {
public:
ClearCacheQuotaHeuristic(const Config& config, BucketMapper* map)
: QuotaLimitHeuristic(
config,
map,
"MAX_HANDLER_BEHAVIOR_CHANGED_CALLS_PER_10_MINUTES"),
callback_registered_(false),
weak_ptr_factory_(this) {}
~ClearCacheQuotaHeuristic() override {}
bool Apply(Bucket* bucket, const base::TimeTicks& event_time) override;
private:
// Callback that is triggered by the ExtensionWebRequestEventRouter on a page
// load.
//
// We don't need to take care of the life time of |bucket|: It is owned by the
// BucketMapper of our base class in |QuotaLimitHeuristic::bucket_mapper_|. As
// long as |this| exists, the respective BucketMapper and its bucket will
// exist as well.
void OnPageLoad(Bucket* bucket);
// Flag to prevent that we register more than one call back in-between
// clearing the cache.
bool callback_registered_;
base::WeakPtrFactory<ClearCacheQuotaHeuristic> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(ClearCacheQuotaHeuristic);
};
bool ClearCacheQuotaHeuristic::Apply(Bucket* bucket,
const base::TimeTicks& event_time) {
if (event_time > bucket->expiration())
bucket->Reset(config(), event_time);
// Call bucket->DeductToken() on a new page load, this is when
// webRequest.handlerBehaviorChanged() clears the cache.
if (!callback_registered_) {
ExtensionWebRequestEventRouter::GetInstance()->AddCallbackForPageLoad(
base::Bind(&ClearCacheQuotaHeuristic::OnPageLoad,
weak_ptr_factory_.GetWeakPtr(),
bucket));
callback_registered_ = true;
}
// We only check whether tokens are left here. Deducting a token happens in
// OnPageLoad().
return bucket->has_tokens();
}
void ClearCacheQuotaHeuristic::OnPageLoad(Bucket* bucket) {
callback_registered_ = false;
bucket->DeductToken();
}
ExtensionFunction::ResponseAction
WebRequestInternalAddEventListenerFunction::Run() {
// Argument 0 is the callback, which we don't use here.
ExtensionWebRequestEventRouter::RequestFilter filter;
base::DictionaryValue* value = NULL;
EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(1, &value));
// Failure + an empty error string means a fatal error.
std::string error;
EXTENSION_FUNCTION_VALIDATE(filter.InitFromValue(*value, &error) ||
!error.empty());
if (!error.empty())
return RespondNow(Error(error));
int extra_info_spec = 0;
if (HasOptionalArgument(2)) {
base::ListValue* value = NULL;
EXTENSION_FUNCTION_VALIDATE(args_->GetList(2, &value));
EXTENSION_FUNCTION_VALIDATE(
ExtraInfoSpec::InitFromValue(*value, &extra_info_spec));
}
std::string event_name;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(3, &event_name));
std::string sub_event_name;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(4, &sub_event_name));
int web_view_instance_id = 0;
EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(5, &web_view_instance_id));
base::WeakPtr<IOThreadExtensionMessageFilter> ipc_sender = ipc_sender_weak();
int embedder_process_id = ipc_sender ? ipc_sender->render_process_id() : 0;
const Extension* extension =
extension_info_map()->extensions().GetByID(extension_id_safe());
std::string extension_name =
extension ? extension->name() : extension_id_safe();
if (!web_view_instance_id) {
// We check automatically whether the extension has the 'webRequest'
// permission. For blocking calls we require the additional permission
// 'webRequestBlocking'.
if ((extra_info_spec &
(ExtraInfoSpec::BLOCKING | ExtraInfoSpec::ASYNC_BLOCKING)) &&
!extension->permissions_data()->HasAPIPermission(
APIPermission::kWebRequestBlocking)) {
return RespondNow(Error(keys::kBlockingPermissionRequired));
}
// We allow to subscribe to patterns that are broader than the host
// permissions. E.g., we could subscribe to http://www.example.com/*
// while having host permissions for http://www.example.com/foo/* and
// http://www.example.com/bar/*.
// For this reason we do only a coarse check here to warn the extension
// developer if they do something obviously wrong.
// When restrictions are enabled in Public Session, allow all URLs for
// webRequests initiated by a regular extension.
if (!(ArePublicSessionRestrictionsEnabled() && extension->is_extension()) &&
extension->permissions_data()
->GetEffectiveHostPermissions()
.is_empty() &&
extension->permissions_data()
->withheld_permissions()
.explicit_hosts()
.is_empty()) {
return RespondNow(Error(keys::kHostPermissionsRequired));
}
}
bool success =
ExtensionWebRequestEventRouter::GetInstance()->AddEventListener(
profile_id(), extension_id_safe(), extension_name,
GetEventHistogramValue(event_name), event_name, sub_event_name,
filter, extra_info_spec, embedder_process_id, web_view_instance_id,
ipc_sender_weak());
EXTENSION_FUNCTION_VALIDATE(success);
helpers::ClearCacheOnNavigation();
return RespondNow(NoArguments());
}
void WebRequestInternalEventHandledFunction::OnError(
const std::string& event_name,
const std::string& sub_event_name,
uint64_t request_id,
std::unique_ptr<ExtensionWebRequestEventRouter::EventResponse> response) {
ExtensionWebRequestEventRouter::GetInstance()->OnEventHandled(
profile_id(),
extension_id_safe(),
event_name,
sub_event_name,
request_id,
response.release());
}
ExtensionFunction::ResponseAction
WebRequestInternalEventHandledFunction::Run() {
std::string event_name;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &event_name));
std::string sub_event_name;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(1, &sub_event_name));
std::string request_id_str;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(2, &request_id_str));
uint64_t request_id;
EXTENSION_FUNCTION_VALIDATE(base::StringToUint64(request_id_str,
&request_id));
std::unique_ptr<ExtensionWebRequestEventRouter::EventResponse> response;
if (HasOptionalArgument(3)) {
base::DictionaryValue* value = NULL;
EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(3, &value));
if (!value->empty()) {
base::Time install_time =
extension_info_map()->GetInstallTime(extension_id_safe());
response.reset(new ExtensionWebRequestEventRouter::EventResponse(
extension_id_safe(), install_time));
}
// In Public Session we restrict everything but "cancel" (except for
// whitelisted extensions which have no such restrictions).
if (ArePublicSessionRestrictionsEnabled() &&
!extensions::IsWhitelistedForPublicSession(extension_id_safe()) &&
(value->HasKey("redirectUrl") ||
value->HasKey(keys::kAuthCredentialsKey) ||
value->HasKey("requestHeaders") ||
value->HasKey("responseHeaders"))) {
OnError(event_name, sub_event_name, request_id, std::move(response));
return RespondNow(Error(keys::kInvalidPublicSessionBlockingResponse));
}
if (value->HasKey("cancel")) {
// Don't allow cancel mixed with other keys.
if (value->size() != 1) {
OnError(event_name, sub_event_name, request_id, std::move(response));
return RespondNow(Error(keys::kInvalidBlockingResponse));
}
bool cancel = false;
EXTENSION_FUNCTION_VALIDATE(value->GetBoolean("cancel", &cancel));
response->cancel = cancel;
}
if (value->HasKey("redirectUrl")) {
std::string new_url_str;
EXTENSION_FUNCTION_VALIDATE(value->GetString("redirectUrl",
&new_url_str));
response->new_url = GURL(new_url_str);
if (!response->new_url.is_valid()) {
OnError(event_name, sub_event_name, request_id, std::move(response));
return RespondNow(Error(keys::kInvalidRedirectUrl, new_url_str));
}
}
const bool has_request_headers = value->HasKey("requestHeaders");
const bool has_response_headers = value->HasKey("responseHeaders");
if (has_request_headers || has_response_headers) {
if (has_request_headers && has_response_headers) {
// Allow only one of the keys, not both.
OnError(event_name, sub_event_name, request_id, std::move(response));
return RespondNow(Error(keys::kInvalidHeaderKeyCombination));
}
base::ListValue* headers_value = NULL;
std::unique_ptr<net::HttpRequestHeaders> request_headers;
std::unique_ptr<helpers::ResponseHeaders> response_headers;
if (has_request_headers) {
request_headers.reset(new net::HttpRequestHeaders());
EXTENSION_FUNCTION_VALIDATE(value->GetList(keys::kRequestHeadersKey,
&headers_value));
} else {
response_headers.reset(new helpers::ResponseHeaders());
EXTENSION_FUNCTION_VALIDATE(value->GetList(keys::kResponseHeadersKey,
&headers_value));
}
for (size_t i = 0; i < headers_value->GetSize(); ++i) {
base::DictionaryValue* header_value = NULL;
std::string name;
std::string value;
EXTENSION_FUNCTION_VALIDATE(
headers_value->GetDictionary(i, &header_value));
if (!FromHeaderDictionary(header_value, &name, &value)) {
std::string serialized_header;
base::JSONWriter::Write(*header_value, &serialized_header);
OnError(event_name, sub_event_name, request_id, std::move(response));
return RespondNow(Error(keys::kInvalidHeader, serialized_header));
}
if (!net::HttpUtil::IsValidHeaderName(name)) {
OnError(event_name, sub_event_name, request_id, std::move(response));
return RespondNow(Error(keys::kInvalidHeaderName));
}
if (!net::HttpUtil::IsValidHeaderValue(value)) {
OnError(event_name, sub_event_name, request_id, std::move(response));
return RespondNow(Error(keys::kInvalidHeaderValue, name));
}
if (has_request_headers)
request_headers->SetHeader(name, value);
else
response_headers->push_back(helpers::ResponseHeader(name, value));
}
if (has_request_headers)
response->request_headers = std::move(request_headers);
else
response->response_headers = std::move(response_headers);
}
if (value->HasKey(keys::kAuthCredentialsKey)) {
base::DictionaryValue* credentials_value = NULL;
EXTENSION_FUNCTION_VALIDATE(value->GetDictionary(
keys::kAuthCredentialsKey,
&credentials_value));
base::string16 username;
base::string16 password;
EXTENSION_FUNCTION_VALIDATE(
credentials_value->GetString(keys::kUsernameKey, &username));
EXTENSION_FUNCTION_VALIDATE(
credentials_value->GetString(keys::kPasswordKey, &password));
response->auth_credentials = net::AuthCredentials(username, password);
}
}
ExtensionWebRequestEventRouter::GetInstance()->OnEventHandled(
profile_id(), extension_id_safe(), event_name, sub_event_name, request_id,
response.release());
return RespondNow(NoArguments());
}
void WebRequestHandlerBehaviorChangedFunction::GetQuotaLimitHeuristics(
QuotaLimitHeuristics* heuristics) const {
QuotaLimitHeuristic::Config config = {
// See web_request.json for current value.
web_request::MAX_HANDLER_BEHAVIOR_CHANGED_CALLS_PER_10_MINUTES,
base::TimeDelta::FromMinutes(10)};
QuotaLimitHeuristic::BucketMapper* bucket_mapper =
new QuotaLimitHeuristic::SingletonBucketMapper();
heuristics->push_back(
std::make_unique<ClearCacheQuotaHeuristic>(config, bucket_mapper));
}
void WebRequestHandlerBehaviorChangedFunction::OnQuotaExceeded(
const std::string& violation_error) {
// Post warning message.
WarningSet warnings;
warnings.insert(
Warning::CreateRepeatedCacheFlushesWarning(extension_id_safe()));
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::UI},
base::Bind(&WarningService::NotifyWarningsOnUI, profile_id(), warnings));
// Continue gracefully.
RunWithValidation()->Execute();
}
ExtensionFunction::ResponseAction
WebRequestHandlerBehaviorChangedFunction::Run() {
helpers::ClearCacheOnNavigation();
return RespondNow(NoArguments());
}
ExtensionWebRequestEventRouter::EventListener::ID::ID(
void* browser_context,
const std::string& extension_id,
const std::string& sub_event_name,
int embedder_process_id,
int web_view_instance_id)
: browser_context(browser_context),
extension_id(extension_id),
sub_event_name(sub_event_name),
embedder_process_id(embedder_process_id),
web_view_instance_id(web_view_instance_id) {}
bool ExtensionWebRequestEventRouter::EventListener::ID::LooselyMatches(
const ID& that) const {
if (web_view_instance_id == 0 && that.web_view_instance_id == 0) {
// Since EventListeners are segmented by browser_context, check that
// last, as it is exceedingly unlikely to be different.
return extension_id == that.extension_id &&
sub_event_name == that.sub_event_name &&
browser_context == that.browser_context;
}
return *this == that;
}
bool ExtensionWebRequestEventRouter::EventListener::ID::operator==(
const ID& that) const {
// Since EventListeners are segmented by browser_context, check that
// last, as it is exceedingly unlikely to be different.
return extension_id == that.extension_id &&
sub_event_name == that.sub_event_name &&
web_view_instance_id == that.web_view_instance_id &&
embedder_process_id == that.embedder_process_id &&
browser_context == that.browser_context;
}
} // namespace extensions