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url_request_http_job.cc
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// 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 "net/url_request/url_request_http_job.h"
#include <algorithm>
#include <utility>
#include <vector>
#include "base/base_switches.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/file_version_info.h"
#include "base/location.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/numerics/safe_conversions.h"
#include "base/optional.h"
#include "base/rand_util.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "base/values.h"
#include "net/base/features.h"
#include "net/base/host_port_pair.h"
#include "net/base/http_user_agent_settings.h"
#include "net/base/load_flags.h"
#include "net/base/net_errors.h"
#include "net/base/network_delegate.h"
#include "net/base/network_isolation_key.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/base/trace_constants.h"
#include "net/base/url_util.h"
#include "net/cert/cert_status_flags.h"
#include "net/cert/ct_policy_status.h"
#include "net/cert/known_roots.h"
#include "net/cookies/canonical_cookie.h"
#include "net/cookies/cookie_access_delegate.h"
#include "net/cookies/cookie_store.h"
#include "net/cookies/cookie_util.h"
#include "net/filter/brotli_source_stream.h"
#include "net/filter/filter_source_stream.h"
#include "net/filter/gzip_source_stream.h"
#include "net/filter/source_stream.h"
#include "net/http/http_content_disposition.h"
#include "net/http/http_network_session.h"
#include "net/http/http_request_headers.h"
#include "net/http/http_response_headers.h"
#include "net/http/http_response_info.h"
#include "net/http/http_status_code.h"
#include "net/http/http_transaction.h"
#include "net/http/http_transaction_factory.h"
#include "net/http/http_util.h"
#include "net/log/net_log.h"
#include "net/log/net_log_event_type.h"
#include "net/log/net_log_values.h"
#include "net/log/net_log_with_source.h"
#include "net/nqe/network_quality_estimator.h"
#include "net/proxy_resolution/proxy_info.h"
#include "net/proxy_resolution/proxy_resolution_service.h"
#include "net/proxy_resolution/proxy_retry_info.h"
#include "net/ssl/ssl_cert_request_info.h"
#include "net/ssl/ssl_config_service.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_error_job.h"
#include "net/url_request/url_request_job_factory.h"
#include "net/url_request/url_request_redirect_job.h"
#include "net/url_request/url_request_throttler_manager.h"
#include "net/url_request/websocket_handshake_userdata_key.h"
#include "url/origin.h"
#if defined(OS_ANDROID)
#include "net/android/network_library.h"
#endif
namespace {
base::Value CookieInclusionStatusNetLogParams(
const std::string& operation,
const std::string& cookie_name,
const std::string& cookie_domain,
const std::string& cookie_path,
const net::CookieInclusionStatus& status,
net::NetLogCaptureMode capture_mode) {
base::Value dict(base::Value::Type::DICTIONARY);
dict.SetStringKey("operation", operation);
dict.SetStringKey("status", status.GetDebugString());
if (net::NetLogCaptureIncludesSensitive(capture_mode)) {
if (!cookie_name.empty())
dict.SetStringKey("name", cookie_name);
if (!cookie_domain.empty())
dict.SetStringKey("domain", cookie_domain);
if (!cookie_path.empty())
dict.SetStringKey("path", cookie_path);
}
return dict;
}
// Records details about the most-specific trust anchor in |spki_hashes|,
// which is expected to be ordered with the leaf cert first and the root cert
// last. This complements the per-verification histogram
// Net.Certificate.TrustAnchor.Verify
void LogTrustAnchor(const net::HashValueVector& spki_hashes) {
// Don't record metrics if there are no hashes; this is true if the HTTP
// load did not come from an active network connection, such as the disk
// cache or a synthesized response.
if (spki_hashes.empty())
return;
int32_t id = 0;
for (const auto& hash : spki_hashes) {
id = net::GetNetTrustAnchorHistogramIdForSPKI(hash);
if (id != 0)
break;
}
base::UmaHistogramSparse("Net.Certificate.TrustAnchor.Request", id);
}
// Records per-request histograms relating to Certificate Transparency
// compliance.
void RecordCTHistograms(const net::SSLInfo& ssl_info) {
if (ssl_info.ct_policy_compliance ==
net::ct::CTPolicyCompliance::CT_POLICY_COMPLIANCE_DETAILS_NOT_AVAILABLE) {
return;
}
if (!ssl_info.is_issued_by_known_root)
return;
// Connections with major errors other than CERTIFICATE_TRANSPARENCY_REQUIRED
// would have failed anyway, so do not record these histograms for such
// requests.
net::CertStatus other_errors =
ssl_info.cert_status &
~net::CERT_STATUS_CERTIFICATE_TRANSPARENCY_REQUIRED;
if (net::IsCertStatusError(other_errors))
return;
// Record the CT compliance of each request, to give a picture of the
// percentage of overall requests that are CT-compliant.
UMA_HISTOGRAM_ENUMERATION(
"Net.CertificateTransparency.RequestComplianceStatus",
ssl_info.ct_policy_compliance,
net::ct::CTPolicyCompliance::CT_POLICY_COUNT);
}
net::CookieOptions CreateCookieOptions(
net::CookieOptions::SameSiteCookieContext same_site_context,
net::CookieOptions::SamePartyCookieContextType same_party_context,
const net::IsolationInfo& isolation_info,
bool is_in_nontrivial_first_party_set) {
net::CookieOptions options;
options.set_return_excluded_cookies();
options.set_include_httponly();
options.set_same_site_cookie_context(same_site_context);
options.set_same_party_cookie_context_type(same_party_context);
if (isolation_info.party_context().has_value()) {
// Count the top-frame site since it's not in the party_context.
options.set_full_party_context_size(isolation_info.party_context()->size() +
1);
}
options.set_is_in_nontrivial_first_party_set(
is_in_nontrivial_first_party_set);
return options;
}
} // namespace
namespace net {
std::unique_ptr<URLRequestJob> URLRequestHttpJob::Create(URLRequest* request) {
const GURL& url = request->url();
// URLRequestContext must have been initialized.
DCHECK(request->context()->http_transaction_factory());
DCHECK(url.SchemeIsHTTPOrHTTPS() || url.SchemeIsWSOrWSS());
// Check for reasons not to return a URLRequestHttpJob. These don't apply to
// https and wss requests.
if (!url.SchemeIsCryptographic()) {
// Check for HSTS upgrade.
TransportSecurityState* hsts =
request->context()->transport_security_state();
if (hsts && hsts->ShouldUpgradeToSSL(url.host())) {
GURL::Replacements replacements;
replacements.SetSchemeStr(
url.SchemeIs(url::kHttpScheme) ? url::kHttpsScheme : url::kWssScheme);
return std::make_unique<URLRequestRedirectJob>(
request, url.ReplaceComponents(replacements),
// Use status code 307 to preserve the method, so POST requests work.
URLRequestRedirectJob::REDIRECT_307_TEMPORARY_REDIRECT, "HSTS");
}
#if defined(OS_ANDROID)
// Check whether the app allows cleartext traffic to this host, and return
// ERR_CLEARTEXT_NOT_PERMITTED if not.
if (request->context()->check_cleartext_permitted() &&
!android::IsCleartextPermitted(url.host())) {
return std::make_unique<URLRequestErrorJob>(request,
ERR_CLEARTEXT_NOT_PERMITTED);
}
#endif
}
return base::WrapUnique<URLRequestJob>(new URLRequestHttpJob(
request, request->context()->http_user_agent_settings()));
}
URLRequestHttpJob::URLRequestHttpJob(
URLRequest* request,
const HttpUserAgentSettings* http_user_agent_settings)
: URLRequestJob(request),
num_cookie_lines_left_(0),
priority_(DEFAULT_PRIORITY),
response_info_(nullptr),
proxy_auth_state_(AUTH_STATE_DONT_NEED_AUTH),
server_auth_state_(AUTH_STATE_DONT_NEED_AUTH),
read_in_progress_(false),
throttling_entry_(nullptr),
done_(false),
awaiting_callback_(false),
http_user_agent_settings_(http_user_agent_settings),
total_received_bytes_from_previous_transactions_(0),
total_sent_bytes_from_previous_transactions_(0) {
URLRequestThrottlerManager* manager = request->context()->throttler_manager();
if (manager)
throttling_entry_ = manager->RegisterRequestUrl(request->url());
ResetTimer();
}
URLRequestHttpJob::~URLRequestHttpJob() {
CHECK(!awaiting_callback_);
DoneWithRequest(ABORTED);
}
void URLRequestHttpJob::SetPriority(RequestPriority priority) {
priority_ = priority;
if (transaction_)
transaction_->SetPriority(priority_);
}
void URLRequestHttpJob::Start() {
DCHECK(!transaction_.get());
// URLRequest::SetReferrer ensures that we do not send username and password
// fields in the referrer.
GURL referrer(request_->referrer());
request_info_.url = request_->url();
request_info_.method = request_->method();
request_info_.network_isolation_key =
request_->isolation_info().network_isolation_key();
request_info_.possibly_top_frame_origin =
request_->isolation_info().top_frame_origin();
request_info_.is_subframe_document_resource =
request_->isolation_info().request_type() ==
net::IsolationInfo::RequestType::kSubFrame;
request_info_.load_flags = request_->load_flags();
request_info_.disable_secure_dns = request_->disable_secure_dns();
request_info_.traffic_annotation =
net::MutableNetworkTrafficAnnotationTag(request_->traffic_annotation());
request_info_.socket_tag = request_->socket_tag();
request_info_.idempotency = request_->GetIdempotency();
#if BUILDFLAG(ENABLE_REPORTING)
request_info_.reporting_upload_depth = request_->reporting_upload_depth();
#endif
// Privacy mode could still be disabled in SetCookieHeaderAndStart if we are
// going to send previously saved cookies.
request_info_.privacy_mode = privacy_mode();
// Strip Referer from request_info_.extra_headers to prevent, e.g., plugins
// from overriding headers that are controlled using other means. Otherwise a
// plugin could set a referrer although sending the referrer is inhibited.
request_info_.extra_headers.RemoveHeader(HttpRequestHeaders::kReferer);
// Our consumer should have made sure that this is a safe referrer (e.g. via
// URLRequestJob::ComputeReferrerForPolicy).
if (referrer.is_valid()) {
std::string referer_value = referrer.spec();
request_info_.extra_headers.SetHeader(HttpRequestHeaders::kReferer,
referer_value);
}
request_info_.extra_headers.SetHeaderIfMissing(
HttpRequestHeaders::kUserAgent,
http_user_agent_settings_ ?
http_user_agent_settings_->GetUserAgent() : std::string());
AddExtraHeaders();
AddCookieHeaderAndStart();
}
void URLRequestHttpJob::Kill() {
weak_factory_.InvalidateWeakPtrs();
if (transaction_)
DestroyTransaction();
URLRequestJob::Kill();
}
void URLRequestHttpJob::GetConnectionAttempts(ConnectionAttempts* out) const {
if (transaction_)
transaction_->GetConnectionAttempts(out);
else
out->clear();
}
void URLRequestHttpJob::CloseConnectionOnDestruction() {
DCHECK(transaction_);
transaction_->CloseConnectionOnDestruction();
}
int URLRequestHttpJob::NotifyConnectedCallback(const TransportInfo& info) {
return URLRequestJob::NotifyConnected(info);
}
void URLRequestHttpJob::NotifyHeadersComplete() {
DCHECK(!response_info_);
DCHECK_EQ(0, num_cookie_lines_left_);
DCHECK(request_->maybe_stored_cookies().empty());
response_info_ = transaction_->GetResponseInfo();
if (!response_info_->was_cached && throttling_entry_.get())
throttling_entry_->UpdateWithResponse(GetResponseCode());
// The ordering of these calls is not important.
ProcessStrictTransportSecurityHeader();
ProcessExpectCTHeader();
// Clear |set_cookie_access_result_list_| after any processing in case
// SaveCookiesAndNotifyHeadersComplete is called again.
request_->set_maybe_stored_cookies(std::move(set_cookie_access_result_list_));
// The HTTP transaction may be restarted several times for the purposes
// of sending authorization information. Each time it restarts, we get
// notified of the headers completion so that we can update the cookie store.
if (transaction_->IsReadyToRestartForAuth()) {
// TODO(battre): This breaks the webrequest API for
// URLRequestTestHTTP.BasicAuthWithCookies
// where OnBeforeStartTransaction -> OnStartTransaction ->
// OnBeforeStartTransaction occurs.
RestartTransactionWithAuth(AuthCredentials());
return;
}
URLRequestJob::NotifyHeadersComplete();
}
void URLRequestHttpJob::DestroyTransaction() {
DCHECK(transaction_.get());
DoneWithRequest(ABORTED);
total_received_bytes_from_previous_transactions_ +=
transaction_->GetTotalReceivedBytes();
total_sent_bytes_from_previous_transactions_ +=
transaction_->GetTotalSentBytes();
transaction_.reset();
response_info_ = nullptr;
override_response_headers_ = nullptr;
receive_headers_end_ = base::TimeTicks();
}
void URLRequestHttpJob::StartTransaction() {
NetworkDelegate* network_delegate = request()->network_delegate();
if (network_delegate) {
OnCallToDelegate(
NetLogEventType::NETWORK_DELEGATE_BEFORE_START_TRANSACTION);
// The NetworkDelegate must watch for OnRequestDestroyed and not modify
// |extra_headers| after it's called.
// TODO(mattm): change the API to remove the out-params and take the
// results as params of the callback.
int rv = network_delegate->NotifyBeforeStartTransaction(
request_,
base::BindOnce(&URLRequestHttpJob::NotifyBeforeStartTransactionCallback,
weak_factory_.GetWeakPtr()),
&request_info_.extra_headers);
// If an extension blocks the request, we rely on the callback to
// MaybeStartTransactionInternal().
if (rv == ERR_IO_PENDING)
return;
MaybeStartTransactionInternal(rv);
return;
}
StartTransactionInternal();
}
void URLRequestHttpJob::NotifyBeforeStartTransactionCallback(int result) {
// The request should not have been cancelled or have already completed.
DCHECK(!is_done());
MaybeStartTransactionInternal(result);
}
void URLRequestHttpJob::MaybeStartTransactionInternal(int result) {
OnCallToDelegateComplete();
if (result == OK) {
StartTransactionInternal();
} else {
request_->net_log().AddEventWithStringParams(NetLogEventType::CANCELLED,
"source", "delegate");
// Don't call back synchronously to the delegate.
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::BindOnce(&URLRequestHttpJob::NotifyStartError,
weak_factory_.GetWeakPtr(), result));
}
}
void URLRequestHttpJob::StartTransactionInternal() {
DCHECK(!override_response_headers_);
// NOTE: This method assumes that request_info_ is already setup properly.
// If we already have a transaction, then we should restart the transaction
// with auth provided by auth_credentials_.
int rv;
// Notify NetworkQualityEstimator.
NetworkQualityEstimator* network_quality_estimator =
request()->context()->network_quality_estimator();
if (network_quality_estimator)
network_quality_estimator->NotifyStartTransaction(*request_);
if (transaction_.get()) {
rv = transaction_->RestartWithAuth(
auth_credentials_, base::BindOnce(&URLRequestHttpJob::OnStartCompleted,
base::Unretained(this)));
auth_credentials_ = AuthCredentials();
} else {
DCHECK(request_->context()->http_transaction_factory());
rv = request_->context()->http_transaction_factory()->CreateTransaction(
priority_, &transaction_);
if (rv == OK && request_info_.url.SchemeIsWSOrWSS()) {
base::SupportsUserData::Data* data =
request_->GetUserData(kWebSocketHandshakeUserDataKey);
if (data) {
transaction_->SetWebSocketHandshakeStreamCreateHelper(
static_cast<WebSocketHandshakeStreamBase::CreateHelper*>(data));
} else {
rv = ERR_DISALLOWED_URL_SCHEME;
}
}
if (rv == OK) {
transaction_->SetConnectedCallback(base::BindRepeating(
&URLRequestHttpJob::NotifyConnectedCallback, base::Unretained(this)));
transaction_->SetRequestHeadersCallback(request_headers_callback_);
transaction_->SetResponseHeadersCallback(response_headers_callback_);
if (!throttling_entry_.get() ||
!throttling_entry_->ShouldRejectRequest(*request_)) {
rv = transaction_->Start(
&request_info_,
base::BindOnce(&URLRequestHttpJob::OnStartCompleted,
base::Unretained(this)),
request_->net_log());
start_time_ = base::TimeTicks::Now();
} else {
// Special error code for the exponential back-off module.
rv = ERR_TEMPORARILY_THROTTLED;
}
}
}
if (rv == ERR_IO_PENDING)
return;
// The transaction started synchronously, but we need to notify the
// URLRequest delegate via the message loop.
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::BindOnce(&URLRequestHttpJob::OnStartCompleted,
weak_factory_.GetWeakPtr(), rv));
}
void URLRequestHttpJob::AddExtraHeaders() {
if (!request_info_.extra_headers.HasHeader(
HttpRequestHeaders::kAcceptEncoding)) {
// If a range is specifically requested, set the "Accepted Encoding" header
// to "identity"
if (request_info_.extra_headers.HasHeader(HttpRequestHeaders::kRange)) {
request_info_.extra_headers.SetHeader(HttpRequestHeaders::kAcceptEncoding,
"identity");
} else {
// Advertise "br" encoding only if transferred data is opaque to proxy.
bool advertise_brotli = false;
if (request()->context()->enable_brotli()) {
if (request()->url().SchemeIsCryptographic() ||
IsLocalhost(request()->url())) {
advertise_brotli = true;
}
}
// Supply Accept-Encoding headers first so that it is more likely that
// they will be in the first transmitted packet. This can sometimes make
// it easier to filter and analyze the streams to assure that a proxy has
// not damaged these headers. Some proxies deliberately corrupt
// Accept-Encoding headers.
std::string advertised_encodings = "gzip, deflate";
if (advertise_brotli)
advertised_encodings += ", br";
// Tell the server what compression formats are supported.
request_info_.extra_headers.SetHeader(HttpRequestHeaders::kAcceptEncoding,
advertised_encodings);
}
}
if (http_user_agent_settings_) {
// Only add default Accept-Language if the request didn't have it
// specified.
std::string accept_language =
http_user_agent_settings_->GetAcceptLanguage();
if (base::FeatureList::IsEnabled(features::kAcceptLanguageHeader) &&
!accept_language.empty()) {
request_info_.extra_headers.SetHeaderIfMissing(
HttpRequestHeaders::kAcceptLanguage,
accept_language);
}
}
}
void URLRequestHttpJob::AddCookieHeaderAndStart() {
CookieStore* cookie_store = request_->context()->cookie_store();
// Read cookies whenever allow_credentials() is true, even if the PrivacyMode
// is being overridden by NetworkDelegate and will eventually block them, as
// blocked cookies still need to be logged in that case.
if (cookie_store && request_->allow_credentials()) {
bool force_ignore_site_for_cookies =
request_->force_ignore_site_for_cookies();
if (cookie_store->cookie_access_delegate() &&
cookie_store->cookie_access_delegate()
->ShouldIgnoreSameSiteRestrictions(request_->url(),
request_->site_for_cookies())) {
force_ignore_site_for_cookies = true;
}
CookieOptions::SameSiteCookieContext same_site_context =
net::cookie_util::ComputeSameSiteContextForRequest(
request_->method(), request_->url(), request_->site_for_cookies(),
request_->initiator(), force_ignore_site_for_cookies);
net::SchemefulSite request_site(request_->url());
const CookieAccessDelegate* delegate =
cookie_store->cookie_access_delegate();
CookieOptions::SamePartyCookieContextType same_party_context =
net::cookie_util::ComputeSamePartyContext(
request_site, request_->isolation_info(), delegate);
bool is_in_nontrivial_first_party_set =
delegate && delegate->IsInNontrivialFirstPartySet(request_site);
CookieOptions options = CreateCookieOptions(
same_site_context, same_party_context, request_->isolation_info(),
is_in_nontrivial_first_party_set);
cookie_store->GetCookieListWithOptionsAsync(
request_->url(), options,
base::BindOnce(&URLRequestHttpJob::SetCookieHeaderAndStart,
weak_factory_.GetWeakPtr(), options));
} else {
StartTransaction();
}
}
void URLRequestHttpJob::SetCookieHeaderAndStart(
const CookieOptions& options,
const CookieAccessResultList& cookies_with_access_result_list,
const CookieAccessResultList& excluded_list) {
DCHECK(request_->maybe_sent_cookies().empty());
bool can_get_cookies =
(request_info_.privacy_mode == PRIVACY_MODE_DISABLED && CanGetCookies());
if (!cookies_with_access_result_list.empty() && can_get_cookies) {
std::string cookie_line =
CanonicalCookie::BuildCookieLine(cookies_with_access_result_list);
UMA_HISTOGRAM_COUNTS_10000("Cookie.HeaderLength", cookie_line.length());
request_info_.extra_headers.SetHeader(HttpRequestHeaders::kCookie,
cookie_line);
// TODO(crbug.com/1031664): Reduce the number of times the cookie list is
// iterated over. Get metrics for every cookie which is included.
for (const auto& c : cookies_with_access_result_list) {
bool request_is_secure = request_->url().SchemeIsCryptographic();
net::CookieSourceScheme cookie_scheme = c.cookie.SourceScheme();
CookieRequestScheme cookie_request_schemes;
switch (cookie_scheme) {
case net::CookieSourceScheme::kSecure:
cookie_request_schemes =
request_is_secure
? CookieRequestScheme::kSecureSetSecureRequest
: CookieRequestScheme::kSecureSetNonsecureRequest;
break;
case net::CookieSourceScheme::kNonSecure:
cookie_request_schemes =
request_is_secure
? CookieRequestScheme::kNonsecureSetSecureRequest
: CookieRequestScheme::kNonsecureSetNonsecureRequest;
break;
case net::CookieSourceScheme::kUnset:
cookie_request_schemes = CookieRequestScheme::kUnsetCookieScheme;
break;
}
UMA_HISTOGRAM_ENUMERATION("Cookie.CookieSchemeRequestScheme",
cookie_request_schemes);
}
}
// Report status for things in |excluded_list| and
// |cookies_with_access_result_list|
// after the delegate got a chance to block them.
CookieAccessResultList maybe_sent_cookies = excluded_list;
if (!can_get_cookies) {
for (CookieAccessResultList::iterator it = maybe_sent_cookies.begin();
it != maybe_sent_cookies.end(); ++it) {
it->access_result.status.AddExclusionReason(
CookieInclusionStatus::EXCLUDE_USER_PREFERENCES);
}
}
for (const auto& cookie_with_access_result :
cookies_with_access_result_list) {
CookieAccessResult access_result = cookie_with_access_result.access_result;
if (!can_get_cookies) {
access_result.status.AddExclusionReason(
CookieInclusionStatus::EXCLUDE_USER_PREFERENCES);
}
maybe_sent_cookies.push_back(
{cookie_with_access_result.cookie, access_result});
}
if (request_->net_log().IsCapturing()) {
for (const auto& cookie_with_access_result : maybe_sent_cookies) {
request_->net_log().AddEvent(
NetLogEventType::COOKIE_INCLUSION_STATUS,
[&](NetLogCaptureMode capture_mode) {
return CookieInclusionStatusNetLogParams(
"send", cookie_with_access_result.cookie.Name(),
cookie_with_access_result.cookie.Domain(),
cookie_with_access_result.cookie.Path(),
cookie_with_access_result.access_result.status, capture_mode);
});
}
}
request_->set_maybe_sent_cookies(std::move(maybe_sent_cookies));
StartTransaction();
}
void URLRequestHttpJob::SaveCookiesAndNotifyHeadersComplete(int result) {
DCHECK(set_cookie_access_result_list_.empty());
DCHECK_EQ(0, num_cookie_lines_left_);
// End of the call started in OnStartCompleted.
OnCallToDelegateComplete();
if (result != OK) {
request_->net_log().AddEventWithStringParams(NetLogEventType::CANCELLED,
"source", "delegate");
NotifyStartError(result);
return;
}
CookieStore* cookie_store = request_->context()->cookie_store();
if ((request_info_.load_flags & LOAD_DO_NOT_SAVE_COOKIES) || !cookie_store) {
NotifyHeadersComplete();
return;
}
base::Time response_date;
base::Optional<base::Time> server_time = base::nullopt;
if (GetResponseHeaders()->GetDateValue(&response_date))
server_time = base::make_optional(response_date);
bool force_ignore_site_for_cookies =
request_->force_ignore_site_for_cookies();
if (cookie_store->cookie_access_delegate() &&
cookie_store->cookie_access_delegate()->ShouldIgnoreSameSiteRestrictions(
request_->url(), request_->site_for_cookies())) {
force_ignore_site_for_cookies = true;
}
CookieOptions::SameSiteCookieContext same_site_context =
net::cookie_util::ComputeSameSiteContextForResponse(
request_->url(), request_->site_for_cookies(), request_->initiator(),
force_ignore_site_for_cookies);
const CookieAccessDelegate* delegate = cookie_store->cookie_access_delegate();
net::SchemefulSite request_site(request_->url());
CookieOptions::SamePartyCookieContextType same_party_context =
net::cookie_util::ComputeSamePartyContext(
request_site, request_->isolation_info(), delegate);
bool is_in_nontrivial_first_party_set =
delegate && delegate->IsInNontrivialFirstPartySet(request_site);
CookieOptions options = CreateCookieOptions(
same_site_context, same_party_context, request_->isolation_info(),
is_in_nontrivial_first_party_set);
// Set all cookies, without waiting for them to be set. Any subsequent
// read will see the combined result of all cookie operation.
const base::StringPiece name("Set-Cookie");
std::string cookie_string;
size_t iter = 0;
HttpResponseHeaders* headers = GetResponseHeaders();
// NotifyHeadersComplete needs to be called once and only once after the
// list has been fully processed, and it can either be called in the
// callback or after the loop is called, depending on how the last element
// was handled. |num_cookie_lines_left_| keeps track of how many async
// callbacks are currently out (starting from 1 to make sure the loop runs
// all the way through before trying to exit). If there are any callbacks
// still waiting when the loop ends, then NotifyHeadersComplete will be
// called when it reaches 0 in the callback itself.
num_cookie_lines_left_ = 1;
while (headers->EnumerateHeader(&iter, name, &cookie_string)) {
CookieInclusionStatus returned_status;
num_cookie_lines_left_++;
std::unique_ptr<CanonicalCookie> cookie = net::CanonicalCookie::Create(
request_->url(), cookie_string, base::Time::Now(), server_time,
&returned_status);
base::Optional<CanonicalCookie> cookie_to_return = base::nullopt;
if (returned_status.IsInclude()) {
DCHECK(cookie);
// Make a copy of the cookie if we successfully made one.
cookie_to_return = *cookie;
}
if (cookie && !CanSetCookie(*cookie, &options)) {
returned_status.AddExclusionReason(
CookieInclusionStatus::EXCLUDE_USER_PREFERENCES);
}
if (!returned_status.IsInclude()) {
OnSetCookieResult(options, cookie_to_return, std::move(cookie_string),
CookieAccessResult(returned_status));
continue;
}
cookie_store->SetCanonicalCookieAsync(
std::move(cookie), request_->url(), options,
base::BindOnce(&URLRequestHttpJob::OnSetCookieResult,
weak_factory_.GetWeakPtr(), options, cookie_to_return,
cookie_string));
}
// Removing the 1 that |num_cookie_lines_left| started with, signifing that
// loop has been exited.
num_cookie_lines_left_--;
if (num_cookie_lines_left_ == 0)
NotifyHeadersComplete();
}
void URLRequestHttpJob::OnSetCookieResult(
const CookieOptions& options,
base::Optional<CanonicalCookie> cookie,
std::string cookie_string,
CookieAccessResult access_result) {
if (request_->net_log().IsCapturing()) {
request_->net_log().AddEvent(NetLogEventType::COOKIE_INCLUSION_STATUS,
[&](NetLogCaptureMode capture_mode) {
return CookieInclusionStatusNetLogParams(
"store",
cookie ? cookie.value().Name() : "",
cookie ? cookie.value().Domain() : "",
cookie ? cookie.value().Path() : "",
access_result.status, capture_mode);
});
}
set_cookie_access_result_list_.emplace_back(
std::move(cookie), std::move(cookie_string), access_result);
num_cookie_lines_left_--;
// If all the cookie lines have been handled, |set_cookie_access_result_list_|
// now reflects the result of all Set-Cookie lines, and the request can be
// continued.
if (num_cookie_lines_left_ == 0)
NotifyHeadersComplete();
}
void URLRequestHttpJob::ProcessStrictTransportSecurityHeader() {
DCHECK(response_info_);
TransportSecurityState* security_state =
request_->context()->transport_security_state();
const SSLInfo& ssl_info = response_info_->ssl_info;
// Only accept HSTS headers on HTTPS connections that have no
// certificate errors.
if (!ssl_info.is_valid() || IsCertStatusError(ssl_info.cert_status) ||
!security_state) {
return;
}
// Don't accept HSTS headers when the hostname is an IP address.
if (request_info_.url.HostIsIPAddress())
return;
// http://tools.ietf.org/html/draft-ietf-websec-strict-transport-sec:
//
// If a UA receives more than one STS header field in a HTTP response
// message over secure transport, then the UA MUST process only the
// first such header field.
HttpResponseHeaders* headers = GetResponseHeaders();
std::string value;
if (headers->EnumerateHeader(nullptr, "Strict-Transport-Security", &value))
security_state->AddHSTSHeader(request_info_.url.host(), value);
}
void URLRequestHttpJob::ProcessExpectCTHeader() {
DCHECK(response_info_);
TransportSecurityState* security_state =
request_->context()->transport_security_state();
const SSLInfo& ssl_info = response_info_->ssl_info;
// Only accept Expect CT headers on HTTPS connections that have no
// certificate errors.
if (!ssl_info.is_valid() || IsCertStatusError(ssl_info.cert_status) ||
!security_state) {
return;
}
HttpResponseHeaders* headers = GetResponseHeaders();
std::string value;
if (headers->GetNormalizedHeader("Expect-CT", &value)) {
security_state->ProcessExpectCTHeader(
value, HostPortPair::FromURL(request_info_.url), ssl_info,
request_->isolation_info().network_isolation_key());
}
}
void URLRequestHttpJob::OnStartCompleted(int result) {
TRACE_EVENT0(NetTracingCategory(), "URLRequestHttpJob::OnStartCompleted");
RecordTimer();
// If the job is done (due to cancellation), can just ignore this
// notification.
if (done_)
return;
receive_headers_end_ = base::TimeTicks::Now();
const URLRequestContext* context = request_->context();
if (transaction_ && transaction_->GetResponseInfo()) {
const SSLInfo& ssl_info = transaction_->GetResponseInfo()->ssl_info;
if (!IsCertificateError(result)) {
LogTrustAnchor(ssl_info.public_key_hashes);
}
RecordCTHistograms(ssl_info);
}
if (transaction_ && transaction_->GetResponseInfo()) {
SetProxyServer(transaction_->GetResponseInfo()->proxy_server);
}
if (result == OK) {
scoped_refptr<HttpResponseHeaders> headers = GetResponseHeaders();
NetworkDelegate* network_delegate = request()->network_delegate();
if (network_delegate) {
// Note that |this| may not be deleted until
// |URLRequestHttpJob::OnHeadersReceivedCallback()| or
// |NetworkDelegate::URLRequestDestroyed()| has been called.
OnCallToDelegate(NetLogEventType::NETWORK_DELEGATE_HEADERS_RECEIVED);
preserve_fragment_on_redirect_url_ = base::nullopt;
IPEndPoint endpoint;
if (transaction_)
transaction_->GetRemoteEndpoint(&endpoint);
// The NetworkDelegate must watch for OnRequestDestroyed and not modify
// any of the arguments after it's called.
// TODO(mattm): change the API to remove the out-params and take the
// results as params of the callback.
int error = network_delegate->NotifyHeadersReceived(
request_,
base::BindOnce(&URLRequestHttpJob::OnHeadersReceivedCallback,
weak_factory_.GetWeakPtr()),
headers.get(), &override_response_headers_, endpoint,
&preserve_fragment_on_redirect_url_);
if (error != OK) {
if (error == ERR_IO_PENDING) {
awaiting_callback_ = true;
} else {
request_->net_log().AddEventWithStringParams(
NetLogEventType::CANCELLED, "source", "delegate");
OnCallToDelegateComplete();
NotifyStartError(error);
}
return;
}
}
SaveCookiesAndNotifyHeadersComplete(OK);
} else if (IsCertificateError(result)) {
// We encountered an SSL certificate error.
// Maybe overridable, maybe not. Ask the delegate to decide.
TransportSecurityState* state = context->transport_security_state();
NotifySSLCertificateError(
result, transaction_->GetResponseInfo()->ssl_info,
state->ShouldSSLErrorsBeFatal(request_info_.url.host()) &&
result != ERR_CERT_KNOWN_INTERCEPTION_BLOCKED);
} else if (result == ERR_SSL_CLIENT_AUTH_CERT_NEEDED) {
NotifyCertificateRequested(
transaction_->GetResponseInfo()->cert_request_info.get());
} else {
// Even on an error, there may be useful information in the response
// info (e.g. whether there's a cached copy).
if (transaction_.get())
response_info_ = transaction_->GetResponseInfo();
NotifyStartError(result);
}
}
void URLRequestHttpJob::OnHeadersReceivedCallback(int result) {
// The request should not have been cancelled or have already completed.
DCHECK(!is_done());
awaiting_callback_ = false;
SaveCookiesAndNotifyHeadersComplete(result);
}
void URLRequestHttpJob::OnReadCompleted(int result) {
TRACE_EVENT0(NetTracingCategory(), "URLRequestHttpJob::OnReadCompleted");
read_in_progress_ = false;
DCHECK_NE(ERR_IO_PENDING, result);
if (ShouldFixMismatchedContentLength(result))
result = OK;
// EOF or error, done with this job.
if (result <= 0)
DoneWithRequest(FINISHED);
ReadRawDataComplete(result);
}
void URLRequestHttpJob::RestartTransactionWithAuth(
const AuthCredentials& credentials) {
auth_credentials_ = credentials;
// These will be reset in OnStartCompleted.
response_info_ = nullptr;
override_response_headers_ = nullptr; // See https://crbug.com/801237.
receive_headers_end_ = base::TimeTicks();
ResetTimer();
// Update the cookies, since the cookie store may have been updated from the
// headers in the 401/407. Since cookies were already appended to
// extra_headers, we need to strip them out before adding them again.
request_info_.extra_headers.RemoveHeader(HttpRequestHeaders::kCookie);
// TODO(https://crbug.com/968327/): This is weird, as all other clearing is at
// the URLRequest layer. Should this call into URLRequest so it can share
// logic at that layer with SetAuth()?
request_->set_maybe_sent_cookies({});
request_->set_maybe_stored_cookies({});
AddCookieHeaderAndStart();
}
void URLRequestHttpJob::SetUpload(UploadDataStream* upload) {
DCHECK(!transaction_.get()) << "cannot change once started";
request_info_.upload_data_stream = upload;
}
void URLRequestHttpJob::SetExtraRequestHeaders(
const HttpRequestHeaders& headers) {
DCHECK(!transaction_.get()) << "cannot change once started";
request_info_.extra_headers.CopyFrom(headers);
}
LoadState URLRequestHttpJob::GetLoadState() const {
return transaction_.get() ?
transaction_->GetLoadState() : LOAD_STATE_IDLE;
}