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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 "chrome/browser/content_settings/content_settings_utils.h"
#include <vector>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "base/string_split.h"
#include "base/values.h"
#include "chrome/browser/content_settings/content_settings_provider.h"
#include "chrome/browser/content_settings/content_settings_rule.h"
#include "chrome/browser/content_settings/host_content_settings_map.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/content_settings_pattern.h"
#include "googleurl/src/gurl.h"
namespace {
// The names of the ContentSettingsType values, for use with dictionary prefs.
const char* kTypeNames[] = {
"cookies",
"images",
"javascript",
"plugins",
"popups",
"geolocation",
"notifications",
"intents",
"auto-select-certificate",
"fullscreen",
"mouselock",
"mixed-script",
"media-stream"
};
COMPILE_ASSERT(arraysize(kTypeNames) == CONTENT_SETTINGS_NUM_TYPES,
type_names_incorrect_size);
const char kPatternSeparator[] = ",";
} // namespace
namespace content_settings {
std::string GetTypeName(ContentSettingsType type) {
return std::string(kTypeNames[type]);
}
std::string CreatePatternString(
const ContentSettingsPattern& item_pattern,
const ContentSettingsPattern& top_level_frame_pattern) {
return item_pattern.ToString()
+ std::string(kPatternSeparator)
+ top_level_frame_pattern.ToString();
}
PatternPair ParsePatternString(const std::string& pattern_str) {
std::vector<std::string> pattern_str_list;
base::SplitString(pattern_str, kPatternSeparator[0], &pattern_str_list);
// If the |pattern_str| is an empty string then the |pattern_string_list|
// contains a single empty string. In this case the empty string will be
// removed to signal an invalid |pattern_str|. Invalid pattern strings are
// handle by the "if"-statment below. So the order of the if statements here
// must be preserved.
if (pattern_str_list.size() == 1) {
if (pattern_str_list[0].empty()) {
pattern_str_list.pop_back();
} else {
pattern_str_list.push_back("*");
}
}
if (pattern_str_list.size() > 2 ||
pattern_str_list.size() == 0) {
return PatternPair(ContentSettingsPattern(),
ContentSettingsPattern());
}
PatternPair pattern_pair;
pattern_pair.first =
ContentSettingsPattern::FromString(pattern_str_list[0]);
pattern_pair.second =
ContentSettingsPattern::FromString(pattern_str_list[1]);
return pattern_pair;
}
ContentSetting ValueToContentSetting(const base::Value* value) {
ContentSetting setting = CONTENT_SETTING_DEFAULT;
bool valid = ParseContentSettingValue(value, &setting);
DCHECK(valid);
return setting;
}
bool ParseContentSettingValue(const base::Value* value,
ContentSetting* setting) {
if (!value) {
*setting = CONTENT_SETTING_DEFAULT;
return true;
}
int int_value = -1;
if (!value->GetAsInteger(&int_value))
return false;
*setting = IntToContentSetting(int_value);
return *setting != CONTENT_SETTING_DEFAULT;
}
base::Value* GetContentSettingValueAndPatterns(
const ProviderInterface* provider,
const GURL& primary_url,
const GURL& secondary_url,
ContentSettingsType content_type,
const std::string& resource_identifier,
bool include_incognito,
ContentSettingsPattern* primary_pattern,
ContentSettingsPattern* secondary_pattern) {
if (include_incognito) {
// Check incognito-only specific settings. It's essential that the
// |RuleIterator| gets out of scope before we get a rule iterator for the
// normal mode.
scoped_ptr<RuleIterator> incognito_rule_iterator(
provider->GetRuleIterator(content_type, resource_identifier, true));
base::Value* value = GetContentSettingValueAndPatterns(
incognito_rule_iterator.get(), primary_url, secondary_url,
primary_pattern, secondary_pattern);
if (value)
return value;
}
// No settings from the incognito; use the normal mode.
scoped_ptr<RuleIterator> rule_iterator(
provider->GetRuleIterator(content_type, resource_identifier, false));
return GetContentSettingValueAndPatterns(
rule_iterator.get(), primary_url, secondary_url,
primary_pattern, secondary_pattern);
}
base::Value* GetContentSettingValueAndPatterns(
RuleIterator* rule_iterator,
const GURL& primary_url,
const GURL& secondary_url,
ContentSettingsPattern* primary_pattern,
ContentSettingsPattern* secondary_pattern) {
while (rule_iterator->HasNext()) {
const Rule& rule = rule_iterator->Next();
if (rule.primary_pattern.Matches(primary_url) &&
rule.secondary_pattern.Matches(secondary_url)) {
if (primary_pattern)
*primary_pattern = rule.primary_pattern;
if (secondary_pattern)
*secondary_pattern = rule.secondary_pattern;
return rule.value.get()->DeepCopy();
}
}
return NULL;
}
base::Value* GetContentSettingValue(const ProviderInterface* provider,
const GURL& primary_url,
const GURL& secondary_url,
ContentSettingsType content_type,
const std::string& resource_identifier,
bool include_incognito) {
return GetContentSettingValueAndPatterns(provider, primary_url, secondary_url,
content_type, resource_identifier,
include_incognito, NULL, NULL);
}
ContentSetting GetContentSetting(const ProviderInterface* provider,
const GURL& primary_url,
const GURL& secondary_url,
ContentSettingsType content_type,
const std::string& resource_identifier,
bool include_incognito) {
scoped_ptr<base::Value> value(
GetContentSettingValue(provider, primary_url, secondary_url,
content_type, resource_identifier,
include_incognito));
return ValueToContentSetting(value.get());
}
void GetRendererContentSettingRules(const HostContentSettingsMap* map,
RendererContentSettingRules* rules) {
map->GetSettingsForOneType(CONTENT_SETTINGS_TYPE_IMAGES, "",
&(rules->image_rules));
map->GetSettingsForOneType(CONTENT_SETTINGS_TYPE_JAVASCRIPT, "",
&(rules->script_rules));
}
} // namespace content_settings
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