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content / browser / ssl / ssl_manager.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/ssl/ssl_manager.h"
#include <set>
#include <utility>
#include "base/command_line.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/histogram_macros.h"
#include "base/strings/utf_string_conversions.h"
#include "base/supports_user_data.h"
#include "base/trace_event/optional_trace_event.h"
#include "content/browser/devtools/devtools_instrumentation.h"
#include "content/browser/navigation_or_document_handle.h"
#include "content/browser/navigation_subresource_loader_params.h"
#include "content/browser/renderer_host/navigation_entry_impl.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/ssl/ssl_error_handler.h"
#include "content/browser/web_contents/web_contents_impl.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/certificate_request_result_type.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/devtools_agent_host.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/ssl_host_state_delegate.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_switches.h"
#include "net/base/url_util.h"
#include "net/cert/cert_status_flags.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
#include "third_party/blink/public/mojom/devtools/console_message.mojom.h"
namespace content {
namespace {
const char kSSLManagerKeyName[] = "content_ssl_manager";
// Used to log type of mixed content displayed/ran, matches histogram enum
// (MixedContentType). DO NOT REORDER.
enum class MixedContentType {
kOptionallyBlockableMixedContent = 0,
kOptionallyBlockableWithCertErrors = 1,
kMixedForm = 2,
kBlockableMixedContent = 3,
kBlockableWithCertErrors = 4,
kMaxValue = kBlockableWithCertErrors,
};
void OnAllowCertificate(SSLErrorHandler* handler,
StoragePartition* storage_partition,
SSLHostStateDelegate* state_delegate,
bool record_decision,
CertificateRequestResultType decision) {
DCHECK(handler->ssl_info().is_valid());
switch (decision) {
case CERTIFICATE_REQUEST_RESULT_TYPE_CONTINUE:
// Note that we should not call SetMaxSecurityStyle here, because
// the active NavigationEntry has just been deleted (in
// HideInterstitialPage) and the new NavigationEntry will not be
// set until DidNavigate. This is ok, because the new
// NavigationEntry will have its max security style set within
// DidNavigate.
//
// While AllowCert() executes synchronously on this thread,
// ContinueRequest() gets posted to a different thread. Calling
// AllowCert() first ensures deterministic ordering.
if (record_decision && state_delegate) {
state_delegate->AllowCert(handler->request_url().host(),
*handler->ssl_info().cert.get(),
handler->cert_error(), storage_partition);
}
handler->ContinueRequest();
return;
case CERTIFICATE_REQUEST_RESULT_TYPE_DENY:
handler->DenyRequest();
return;
case CERTIFICATE_REQUEST_RESULT_TYPE_CANCEL:
handler->CancelRequest();
return;
}
}
class SSLManagerSet : public base::SupportsUserData::Data {
public:
SSLManagerSet() {
}
SSLManagerSet(const SSLManagerSet&) = delete;
SSLManagerSet& operator=(const SSLManagerSet&) = delete;
std::set<raw_ptr<SSLManager, SetExperimental>>& get() { return set_; }
private:
std::set<raw_ptr<SSLManager, SetExperimental>> set_;
};
} // namespace
// static
void SSLManager::OnSSLCertificateError(
const base::WeakPtr<SSLErrorHandler::Delegate>& delegate,
bool is_primary_main_frame_request,
const GURL& url,
NavigationOrDocumentHandle* navigation_or_document,
int net_error,
const net::SSLInfo& ssl_info,
bool fatal) {
DCHECK(delegate.get());
DVLOG(1) << "OnSSLCertificateError() cert_error: " << net_error
<< " url: " << url.spec() << " cert_status: " << std::hex
<< ssl_info.cert_status;
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
WebContents* web_contents = nullptr;
FrameTreeNode* frame_tree_node = nullptr;
// This handle can be null if the request is from service worker.
if (navigation_or_document) {
web_contents = navigation_or_document->GetWebContents();
frame_tree_node = navigation_or_document->GetFrameTreeNode();
}
std::unique_ptr<SSLErrorHandler> handler(
new SSLErrorHandler(web_contents, delegate, is_primary_main_frame_request,
url, net_error, ssl_info, fatal));
if (!web_contents || !frame_tree_node) {
// Check if the DevTools Browser target is set to ignore certificate errors.
if (devtools_instrumentation::ShouldBypassCertificateErrors()) {
handler->ContinueRequest();
return;
}
// Requests can fail to dispatch because they don't have a WebContents. See
// https://crbug.com/86537. In this case we have to make a decision in this
// function. Also, if the navigation or document which have been responsible
// for the request don't exist, there is no point in trying to process
// further.
handler->DenyRequest();
return;
}
// Check if we should deny certificate errors using the main frame's URL.
if (GetContentClient()->browser()->ShouldDenyRequestOnCertificateError(
web_contents->GetLastCommittedURL())) {
handler->DenyRequest();
return;
}
NavigationControllerImpl& controller =
frame_tree_node->navigator().controller();
controller.SetPendingNavigationSSLError(true);
SSLManager* manager = controller.ssl_manager();
manager->OnCertError(std::move(handler));
}
SSLManager::SSLManager(NavigationControllerImpl* controller)
: controller_(controller),
ssl_host_state_delegate_(
controller->GetBrowserContext()->GetSSLHostStateDelegate()) {
DCHECK(controller_);
SSLManagerSet* managers = static_cast<SSLManagerSet*>(
controller_->GetBrowserContext()->GetUserData(kSSLManagerKeyName));
if (!managers) {
auto managers_owned = std::make_unique<SSLManagerSet>();
managers = managers_owned.get();
controller_->GetBrowserContext()->SetUserData(kSSLManagerKeyName,
std::move(managers_owned));
}
managers->get().insert(this);
}
SSLManager::~SSLManager() {
SSLManagerSet* managers = static_cast<SSLManagerSet*>(
controller_->GetBrowserContext()->GetUserData(kSSLManagerKeyName));
managers->get().erase(this);
}
void SSLManager::DidCommitProvisionalLoad(const LoadCommittedDetails& details) {
NavigationEntryImpl* entry = controller_->GetLastCommittedEntry();
int add_content_status_flags = 0;
int remove_content_status_flags = 0;
if (!details.is_main_frame || details.is_same_document) {
// For subframe navigations, and for same-document main-frame navigations,
// carry over content status flags from the previously committed entry. For
// example, the mixed content flag shouldn't clear because of a subframe
// navigation, or because of a back/forward navigation that doesn't leave
// the current document. (See https://crbug.com/959571.)
NavigationEntryImpl* previous_entry =
controller_->GetEntryAtIndex(details.previous_entry_index);
if (previous_entry) {
add_content_status_flags = previous_entry->GetSSL().content_status;
}
} else if (!details.is_prerender_activation) {
// For main-frame navigations that are not same-document and not prerender
// activations, clear content status flags. These flags are set based on the
// content on the page, and thus should reflect the current content, even if
// the navigation was to an existing entry that already had content status
// flags set. The status flags are kept for prerender activations because
// |entry| points to the NavigationEntry that has just committed and it may
// contain existing ssl flags which we do not want to reset.
remove_content_status_flags = ~0;
}
if (!UpdateEntry(entry, add_content_status_flags, remove_content_status_flags,
/*notify_changes=*/details.is_in_active_page)) {
// Ensure the WebContents is notified that the SSL state changed when a
// load is committed, in case the active navigation entry has changed.
// Notification will only be called during activation if this commit is
// triggered by prerendering.
if (details.is_in_active_page) {
NotifyDidChangeVisibleSSLState();
}
}
}
void SSLManager::DidDisplayMixedContent() {
OPTIONAL_TRACE_EVENT0("content", "SSLManager::DidDisplayMixedContent");
NavigationEntryImpl* entry = controller_->GetLastCommittedEntry();
if (entry && entry->GetURL().SchemeIsCryptographic() &&
entry->GetSSL().certificate) {
RenderFrameHostImpl* main_frame = controller_->frame_tree().GetMainFrame();
WebContents* contents = WebContents::FromRenderFrameHost(main_frame);
if (contents) {
GetContentClient()->browser()->OnDisplayInsecureContent(contents);
}
}
UpdateLastCommittedEntry(SSLStatus::DISPLAYED_INSECURE_CONTENT, 0);
}
void SSLManager::DidContainInsecureFormAction() {
OPTIONAL_TRACE_EVENT0("content", "SSLManager::DidContainInsecureFormAction");
UpdateLastCommittedEntry(SSLStatus::DISPLAYED_FORM_WITH_INSECURE_ACTION, 0);
}
void SSLManager::DidDisplayContentWithCertErrors() {
NavigationEntryImpl* entry = controller_->GetLastCommittedEntry();
if (!entry)
return;
if (entry->GetURL().SchemeIsCryptographic() && entry->GetSSL().certificate) {
UpdateLastCommittedEntry(SSLStatus::DISPLAYED_CONTENT_WITH_CERT_ERRORS, 0);
}
}
void SSLManager::DidRunMixedContent(const GURL& security_origin) {
NavigationEntryImpl* entry = controller_->GetLastCommittedEntry();
if (!entry)
return;
SiteInstance* site_instance = entry->site_instance();
if (!site_instance)
return;
if (ssl_host_state_delegate_) {
ssl_host_state_delegate_->HostRanInsecureContent(
security_origin.host(), site_instance->GetProcess()->GetID(),
SSLHostStateDelegate::MIXED_CONTENT);
}
// TODO(crbug.com/40223471): Ensure proper notify_changes is passed to
// UpdateEntry.
UpdateEntry(entry, 0, 0, /*notify_changes=*/true);
NotifySSLInternalStateChanged(controller_->GetBrowserContext());
}
void SSLManager::DidRunContentWithCertErrors(const GURL& security_origin) {
NavigationEntryImpl* entry = controller_->GetLastCommittedEntry();
if (!entry)
return;
SiteInstance* site_instance = entry->site_instance();
if (!site_instance)
return;
if (ssl_host_state_delegate_) {
ssl_host_state_delegate_->HostRanInsecureContent(
security_origin.host(), site_instance->GetProcess()->GetID(),
SSLHostStateDelegate::CERT_ERRORS_CONTENT);
}
// TODO(crbug.com/40223471): Ensure proper notify_changes is passed to
// UpdateEntry.
UpdateEntry(entry, 0, 0, /*notify_changes=*/true);
NotifySSLInternalStateChanged(controller_->GetBrowserContext());
}
void SSLManager::OnCertError(std::unique_ptr<SSLErrorHandler> handler) {
// First we check if we know the policy for this error.
DCHECK(handler->ssl_info().is_valid());
SSLHostStateDelegate::CertJudgment judgment;
if (net::IsLocalhost(handler->request_url()) &&
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kAllowInsecureLocalhost)) {
// If the appropriate flag is set, let requests on localhost go
// through even if there are certificate errors. Errors on localhost
// are unlikely to indicate actual security problems.
judgment = SSLHostStateDelegate::ALLOWED;
} else if (ssl_host_state_delegate_) {
judgment = ssl_host_state_delegate_->QueryPolicy(
handler->request_url().host(), *handler->ssl_info().cert.get(),
handler->cert_error(),
controller_->frame_tree().GetMainFrame()->GetStoragePartition());
} else {
judgment = SSLHostStateDelegate::DENIED;
}
if (judgment == SSLHostStateDelegate::ALLOWED) {
handler->ContinueRequest();
return;
}
DCHECK(net::IsCertificateError(handler->cert_error()));
OnCertErrorInternal(std::move(handler));
}
bool SSLManager::HasAllowExceptionForAnyHost() {
if (!ssl_host_state_delegate_) {
return false;
}
return ssl_host_state_delegate_->HasAllowExceptionForAnyHost(
controller_->frame_tree().GetMainFrame()->GetStoragePartition());
}
bool SSLManager::DidStartResourceResponse(
const url::SchemeHostPort& final_response_url,
bool has_certificate_errors) {
const std::string& scheme = final_response_url.scheme();
const std::string& host = final_response_url.host();
if (!GURL::SchemeIsCryptographic(scheme) || has_certificate_errors) {
return false;
}
// If the scheme is https: or wss and the cert did not have any errors, revoke
// any previous decisions that have occurred.
if (!ssl_host_state_delegate_ ||
!ssl_host_state_delegate_->HasAllowException(
host,
controller_->frame_tree().GetMainFrame()->GetStoragePartition())) {
return false;
}
// If there's no certificate error, a good certificate has been seen, so
// clear out any exceptions that were made by the user for bad
// certificates. This intentionally does not apply to cached resources
// (see https://crbug.com/634553 for an explanation).
ssl_host_state_delegate_->RevokeUserAllowExceptions(host);
return true;
}
void SSLManager::OnCertErrorInternal(std::unique_ptr<SSLErrorHandler> handler) {
WebContents* web_contents = handler->web_contents();
int cert_error = handler->cert_error();
const net::SSLInfo& ssl_info = handler->ssl_info();
const GURL& request_url = handler->request_url();
bool is_primary_main_frame_request = handler->is_primary_main_frame_request();
bool fatal = handler->fatal();
base::RepeatingCallback<void(bool, content::CertificateRequestResultType)>
callback = base::BindRepeating(
&OnAllowCertificate, base::Owned(handler.release()),
controller_->frame_tree().GetMainFrame()->GetStoragePartition(),
ssl_host_state_delegate_);
if (devtools_instrumentation::HandleCertificateError(
web_contents, cert_error, request_url,
base::BindRepeating(callback, false))) {
return;
}
GetContentClient()->browser()->AllowCertificateError(
web_contents, cert_error, ssl_info, request_url,
is_primary_main_frame_request, fatal,
base::BindOnce(std::move(callback), true));
}
bool SSLManager::UpdateEntry(NavigationEntryImpl* entry,
int add_content_status_flags,
int remove_content_status_flags,
bool notify_changes) {
// We don't always have a navigation entry to update, for example in the
// case of the Web Inspector.
if (!entry)
return false;
SSLStatus original_ssl_status = entry->GetSSL(); // Copy!
entry->GetSSL().initialized = true;
entry->GetSSL().content_status &= ~remove_content_status_flags;
entry->GetSSL().content_status |= add_content_status_flags;
SiteInstance* site_instance = entry->site_instance();
// Note that |site_instance| can be NULL here because NavigationEntries don't
// necessarily have site instances. Without a process, the entry can't
// possibly have insecure content. See bug https://crbug.com/12423.
if (site_instance && ssl_host_state_delegate_) {
const std::optional<url::Origin>& entry_origin =
entry->root_node()->frame_entry->committed_origin();
// In some cases (e.g., unreachable URLs), navigation entries might not have
// origins attached to them. We don't care about tracking mixed content for
// those cases.
if (entry_origin.has_value()) {
const std::string& host = entry_origin->host();
int process_id = site_instance->GetProcess()->GetID();
if (ssl_host_state_delegate_->DidHostRunInsecureContent(
host, process_id, SSLHostStateDelegate::MIXED_CONTENT)) {
entry->GetSSL().content_status |= SSLStatus::RAN_INSECURE_CONTENT;
}
// Only record information about subresources with cert errors if the
// main page is HTTPS with a certificate.
if (entry->GetURL().SchemeIsCryptographic() &&
entry->GetSSL().certificate &&
ssl_host_state_delegate_->DidHostRunInsecureContent(
host, process_id, SSLHostStateDelegate::CERT_ERRORS_CONTENT)) {
entry->GetSSL().content_status |=
SSLStatus::RAN_CONTENT_WITH_CERT_ERRORS;
}
}
}
if (entry->GetSSL().initialized != original_ssl_status.initialized ||
entry->GetSSL().content_status != original_ssl_status.content_status) {
if (notify_changes) {
NotifyDidChangeVisibleSSLState();
}
return true;
}
return false;
}
void SSLManager::UpdateLastCommittedEntry(int add_content_status_flags,
int remove_content_status_flags) {
NavigationEntryImpl* entry;
if (controller_->frame_tree().is_fenced_frame()) {
// Only the primary frame tree's NavigationEntries are exposed outside of
// content, so the primary frame tree's NavigationController needs to
// represent an aggregate view of the security state of its inner frame
// trees.
RenderFrameHostImpl* rfh =
controller_->frame_tree().root()->current_frame_host();
DCHECK(rfh);
CHECK_NE(RenderFrameHostImpl::LifecycleStateImpl::kPrerendering,
rfh->GetOutermostMainFrame()->lifecycle_state());
WebContentsImpl* contents =
WebContentsImpl::FromRenderFrameHostImpl(rfh->GetOutermostMainFrame());
entry = contents->GetController().GetLastCommittedEntry();
} else {
entry = controller_->GetLastCommittedEntry();
}
if (!entry)
return;
// TODO(crbug.com/40223471): Ensure proper notify_changes is passed to
// UpdateEntry.
UpdateEntry(entry, add_content_status_flags, remove_content_status_flags,
/*notify_changes=*/true);
}
void SSLManager::NotifyDidChangeVisibleSSLState() {
RenderFrameHostImpl* main_frame = controller_->frame_tree().GetMainFrame();
WebContentsImpl* contents = static_cast<WebContentsImpl*>(
WebContents::FromRenderFrameHost(main_frame));
contents->DidChangeVisibleSecurityState();
}
// static
void SSLManager::NotifySSLInternalStateChanged(BrowserContext* context) {
SSLManagerSet* managers =
static_cast<SSLManagerSet*>(context->GetUserData(kSSLManagerKeyName));
for (SSLManager* manager : managers->get()) {
// TODO(crbug.com/40223471): Ensure proper notify_changes is passed to
// UpdateEntry.
manager->UpdateEntry(manager->controller()->GetLastCommittedEntry(), 0, 0,
/*notify_changes=*/true);
}
}
} // namespace content