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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SECURITY_INTERSTITIALS_CONTENT_STATEFUL_SSL_HOST_STATE_DELEGATE_H_
#define COMPONENTS_SECURITY_INTERSTITIALS_CONTENT_STATEFUL_SSL_HOST_STATE_DELEGATE_H_
#include <memory>
#include <set>
#include <string>
#include "base/memory/raw_ptr.h"
#include "components/keyed_service/core/keyed_service.h"
#include "components/security_interstitials/core/https_only_mode_allowlist.h"
#include "components/security_interstitials/core/https_only_mode_enforcelist.h"
#include "content/public/browser/ssl_host_state_delegate.h"
#include "url/gurl.h"
class HostContentSettingsMap;
class PrefService;
namespace base {
class Clock;
class Value;
class FilePath;
} // namespace base
namespace content {
class BrowserContext;
class StoragePartition;
} // namespace content
// Tracks state related to certificate and SSL errors. This state includes:
// - certificate error exceptions
// - mixed content exceptions
class StatefulSSLHostStateDelegate : public content::SSLHostStateDelegate,
public KeyedService {
public:
StatefulSSLHostStateDelegate(
content::BrowserContext* browser_context,
HostContentSettingsMap* host_content_settings_map);
StatefulSSLHostStateDelegate(const StatefulSSLHostStateDelegate&) = delete;
StatefulSSLHostStateDelegate& operator=(const StatefulSSLHostStateDelegate&) =
delete;
~StatefulSSLHostStateDelegate() override;
// content::SSLHostStateDelegate overrides:
void AllowCert(const std::string& host,
const net::X509Certificate& cert,
int error,
content::StoragePartition* storage_partition) override;
void Clear(
base::RepeatingCallback<bool(const std::string&)> host_filter) override;
CertJudgment QueryPolicy(
const std::string& host,
const net::X509Certificate& cert,
int error,
content::StoragePartition* storage_partition) override;
void HostRanInsecureContent(const std::string& host,
InsecureContentType content_type) override;
bool DidHostRunInsecureContent(const std::string& host,
InsecureContentType content_type) override;
void AllowHttpForHost(const std::string& host,
content::StoragePartition* storage_partition) override;
bool IsHttpAllowedForHost(
const std::string& host,
content::StoragePartition* storage_partition) override;
void RevokeUserAllowExceptions(const std::string& host) override;
bool HasAllowException(const std::string& host,
content::StoragePartition* storage_partition) override;
// Returns true if the user has allowed a certificate error exception or HTTP
// exception for any host.
bool HasAllowExceptionForAnyHost(
content::StoragePartition* storage_partition) override;
void SetHttpsEnforcementForHost(
const std::string& host,
bool enforced,
content::StoragePartition* storage_partition) override;
bool IsHttpsEnforcedForUrl(
const GURL& url,
content::StoragePartition* storage_partition) override;
std::set<GURL> GetHttpsEnforcedHosts(
content::StoragePartition* storage_partition) const;
// Clears all entries from the HTTP allowlist.
void ClearHttpsOnlyModeAllowlist();
// Clear all entries from the HTTPS enforcelist.
void ClearHttpsEnforcelist();
// RevokeUserAllowExceptionsHard is the same as RevokeUserAllowExceptions but
// additionally may close idle connections in the process. This should be used
// *only* for rare events, such as a user controlled button, as it may be very
// disruptive to the networking stack.
virtual void RevokeUserAllowExceptionsHard(const std::string& host);
bool HttpsFirstBalancedModeSuppressedForTesting();
void SetHttpsFirstBalancedModeSuppressedForTesting(bool suppressed);
// SetClockForTesting takes ownership of the passed in clock.
void SetClockForTesting(std::unique_ptr<base::Clock> clock);
// Returns whether the user has allowed a certificate error exception for
// |host|.
bool HasCertAllowException(const std::string& host,
content::StoragePartition* storage_partition);
// Returns whether the user has allowed an HTTP exception for |host|.
bool HasHttpAllowException(const std::string& host,
content::StoragePartition* storage_partition);
private:
// Used to specify whether new content setting entries should be created if
// they don't already exist when querying the user's settings.
enum CreateDictionaryEntriesDisposition {
CREATE_DICTIONARY_ENTRIES,
DO_NOT_CREATE_DICTIONARY_ENTRIES
};
// Returns a dictionary of certificate fingerprints and errors that have been
// allowed as exceptions by the user.
//
// |dict| specifies the user's full exceptions dictionary for a specific site
// in their content settings. Must be retrieved directly from a website
// setting in |host_content_settings_map_|.
//
// If |create_entries| specifies CreateDictionaryEntries, then
// GetValidCertDecisionsDict will create a new set of entries within the
// dictionary if they do not already exist. Otherwise will fail and return if
// NULL if they do not exist.
base::Value::Dict* GetValidCertDecisionsDict(
CreateDictionaryEntriesDisposition create_entries,
base::Value::Dict& dict);
bool HasCertAllowExceptionForAnyHost(
content::StoragePartition* storage_partition);
bool IsHttpAllowedForAnyHost(content::StoragePartition* storage_partition);
std::unique_ptr<base::Clock> clock_;
raw_ptr<content::BrowserContext> browser_context_;
raw_ptr<PrefService> pref_service_;
raw_ptr<HostContentSettingsMap> host_content_settings_map_;
using AllowedCert = std::pair<std::string /* certificate fingerprint */,
base::FilePath /* StoragePartition path */>;
// Typically, cert decisions are stored in ContentSettings and persisted to
// disk. For non-default StoragePartitions, particularly a <webview> in a
// Chrome App, the decisions should be isolated from normal browsing and don't
// need to be persisted to disk. In fact, persisting them is undesirable
// because they may not have UI exposed to the user when a certificate error
// is bypassed. So we track these decisions purely in memory. See
// https://crbug.com/639173.
std::map<std::string /* host */, std::set<AllowedCert>>
allowed_certs_for_non_default_storage_partitions_;
// Hosts which have been contaminated with insecure mixed content. Running
// insecure content is remembered for a host but not persisted across browser
// restarts.
std::set<std::string> ran_mixed_content_hosts_;
// Hosts which have been contaminated with content with certificate errors.
std::set<std::string> ran_content_with_cert_errors_hosts_;
// Tracks sites that are allowed to load over HTTP when HTTPS-First Mode is
// enabled. Allowed hosts are exact hostname matches -- subdomains of a host
// on the allowlist must be separately allowlisted.
security_interstitials::HttpsOnlyModeAllowlist https_only_mode_allowlist_;
// Tracks sites that are not allowed to load over HTTP when HTTPS-First Mode
// is enabled. Enforced hosts are exact hostname matches -- subdomains of a
// host on the enforcelist must be separately added.
// The allowlist takes precedence over enforcelist. If a site is in both
// lists, it's allowed to load over HTTP.
security_interstitials::HttpsOnlyModeEnforcelist https_only_mode_enforcelist_;
bool https_first_balanced_mode_suppressed_for_testing;
};
#endif // COMPONENTS_SECURITY_INTERSTITIALS_CONTENT_STATEFUL_SSL_HOST_STATE_DELEGATE_H_
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