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// Copyright (c) 2011 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 "chrome/browser/content_settings/content_settings_base_provider.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "chrome/browser/content_settings/content_settings_utils.h"
#include "chrome/common/chrome_switches.h"
#include "googleurl/src/gurl.h"
#include "net/base/net_util.h"
namespace content_settings {
ExtendedContentSettings::ExtendedContentSettings() {}
ExtendedContentSettings::ExtendedContentSettings(
const ExtendedContentSettings& rhs)
: content_settings(rhs.content_settings),
content_settings_for_resources(rhs.content_settings_for_resources) {
}
ExtendedContentSettings::~ExtendedContentSettings() {}
BaseProvider::BaseProvider(bool is_incognito)
: is_incognito_(is_incognito) {
}
BaseProvider::~BaseProvider() {}
bool BaseProvider::AllDefault(
const ExtendedContentSettings& settings) const {
for (size_t i = 0; i < arraysize(settings.content_settings.settings); ++i) {
if (settings.content_settings.settings[i] != CONTENT_SETTING_DEFAULT)
return false;
}
return settings.content_settings_for_resources.empty();
}
ContentSetting BaseProvider::GetContentSetting(
const GURL& requesting_url,
const GURL& embedding_url,
ContentSettingsType content_type,
const ResourceIdentifier& resource_identifier) const {
// Support for embedding_patterns is not implemented yet.
DCHECK(requesting_url == embedding_url);
if (!RequiresResourceIdentifier(content_type) ||
(RequiresResourceIdentifier(content_type) && resource_identifier.empty()))
return GetNonDefaultContentSettings(requesting_url).settings[content_type];
// Resolve content settings with resource identifier.
// 1. Check for pattern that exactly match the url/host
// 1.1 In the content-settings-map
// 1.2 In the incognito content-settings-map
// 3. Shorten the url subdomain by subdomain and try to find a pattern in
// 3.1 OTR content-settings-map
// 3.2 content-settings-map
base::AutoLock auto_lock(lock_);
const std::string host(net::GetHostOrSpecFromURL(requesting_url));
ContentSettingsTypeResourceIdentifierPair
requested_setting(content_type, resource_identifier);
// Check for exact matches first.
HostContentSettings::const_iterator i(host_content_settings_.find(host));
if (i != host_content_settings_.end() &&
i->second.content_settings_for_resources.find(requested_setting) !=
i->second.content_settings_for_resources.end()) {
return i->second.content_settings_for_resources.find(
requested_setting)->second;
}
// If this map is not for an incognito profile, these searches will never
// match. The additional incognito exceptions always overwrite the
// regular ones.
i = incognito_settings_.find(host);
if (i != incognito_settings_.end() &&
i->second.content_settings_for_resources.find(requested_setting) !=
i->second.content_settings_for_resources.end()) {
return i->second.content_settings_for_resources.find(
requested_setting)->second;
}
// Match patterns starting with the most concrete pattern match.
for (std::string key =
std::string(ContentSettingsPattern::kDomainWildcard) + host; ; ) {
HostContentSettings::const_iterator i(incognito_settings_.find(key));
if (i != incognito_settings_.end() &&
i->second.content_settings_for_resources.find(requested_setting) !=
i->second.content_settings_for_resources.end()) {
return i->second.content_settings_for_resources.find(
requested_setting)->second;
}
i = host_content_settings_.find(key);
if (i != host_content_settings_.end() &&
i->second.content_settings_for_resources.find(requested_setting) !=
i->second.content_settings_for_resources.end()) {
return i->second.content_settings_for_resources.find(
requested_setting)->second;
}
const size_t next_dot =
key.find('.', ContentSettingsPattern::kDomainWildcardLength);
if (next_dot == std::string::npos)
break;
key.erase(ContentSettingsPattern::kDomainWildcardLength,
next_dot - ContentSettingsPattern::kDomainWildcardLength + 1);
}
return CONTENT_SETTING_DEFAULT;
}
void BaseProvider::GetAllContentSettingsRules(
ContentSettingsType content_type,
const ResourceIdentifier& resource_identifier,
Rules* content_setting_rules) const {
DCHECK(content_setting_rules);
content_setting_rules->clear();
const HostContentSettings* map_to_return =
is_incognito_ ? &incognito_settings_ : &host_content_settings_;
ContentSettingsTypeResourceIdentifierPair requested_setting(
content_type, resource_identifier);
base::AutoLock auto_lock(lock_);
for (HostContentSettings::const_iterator i(map_to_return->begin());
i != map_to_return->end(); ++i) {
ContentSetting setting;
if (RequiresResourceIdentifier(content_type)) {
if (i->second.content_settings_for_resources.find(requested_setting) !=
i->second.content_settings_for_resources.end()) {
setting = i->second.content_settings_for_resources.find(
requested_setting)->second;
} else {
setting = CONTENT_SETTING_DEFAULT;
}
} else {
setting = i->second.content_settings.settings[content_type];
}
if (setting != CONTENT_SETTING_DEFAULT) {
// Use of push_back() relies on the map iterator traversing in order of
// ascending keys.
content_setting_rules->push_back(
Rule(ContentSettingsPattern::FromString(i->first),
ContentSettingsPattern::FromString(i->first),
setting));
}
}
}
ContentSettings BaseProvider::GetNonDefaultContentSettings(
const GURL& url) const {
base::AutoLock auto_lock(lock_);
const std::string host(net::GetHostOrSpecFromURL(url));
ContentSettings output;
for (int j = 0; j < CONTENT_SETTINGS_NUM_TYPES; ++j)
output.settings[j] = CONTENT_SETTING_DEFAULT;
// Check for exact matches first.
HostContentSettings::const_iterator i(host_content_settings_.find(host));
if (i != host_content_settings_.end())
output = i->second.content_settings;
// If this map is not for an incognito profile, these searches will never
// match. The additional incognito exceptions always overwrite the
// regular ones.
i = incognito_settings_.find(host);
if (i != incognito_settings_.end()) {
for (int j = 0; j < CONTENT_SETTINGS_NUM_TYPES; ++j)
if (i->second.content_settings.settings[j] != CONTENT_SETTING_DEFAULT)
output.settings[j] = i->second.content_settings.settings[j];
}
// Match patterns starting with the most concrete pattern match.
for (std::string key =
std::string(ContentSettingsPattern::kDomainWildcard) + host; ; ) {
HostContentSettings::const_iterator i(incognito_settings_.find(key));
if (i != incognito_settings_.end()) {
for (int j = 0; j < CONTENT_SETTINGS_NUM_TYPES; ++j) {
if (output.settings[j] == CONTENT_SETTING_DEFAULT)
output.settings[j] = i->second.content_settings.settings[j];
}
}
i = host_content_settings_.find(key);
if (i != host_content_settings_.end()) {
for (int j = 0; j < CONTENT_SETTINGS_NUM_TYPES; ++j) {
if (output.settings[j] == CONTENT_SETTING_DEFAULT)
output.settings[j] = i->second.content_settings.settings[j];
}
}
const size_t next_dot =
key.find('.', ContentSettingsPattern::kDomainWildcardLength);
if (next_dot == std::string::npos)
break;
key.erase(ContentSettingsPattern::kDomainWildcardLength,
next_dot - ContentSettingsPattern::kDomainWildcardLength + 1);
}
return output;
}
void BaseProvider::UpdateContentSettingsMap(
const ContentSettingsPattern& requesting_pattern,
const ContentSettingsPattern& embedding_pattern,
ContentSettingsType content_type,
const ResourceIdentifier& resource_identifier,
ContentSetting content_setting) {
HostContentSettings* content_settings_map = host_content_settings();
ExtendedContentSettings& extended_settings =
(*content_settings_map)[requesting_pattern.ToString()];
extended_settings.content_settings.settings[content_type] = content_setting;
}
} // namespace content_settings
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