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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/plugins/plugin_utils.h"
#include "base/values.h"
#include "chrome/browser/profiles/profile.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/content_settings/core/common/content_settings.h"
#include "components/content_settings/core/common/content_settings_types.h"
#include "components/content_settings/core/common/content_settings_utils.h"
#include "content/public/common/webplugininfo.h"
#include "extensions/buildflags/buildflags.h"
#include "url/gurl.h"
#include "url/origin.h"
#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "chrome/browser/extensions/chrome_content_browser_client_extensions_part.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_util.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest_handlers/mime_types_handler.h"
#endif
// static
void PluginUtils::GetPluginContentSetting(
const HostContentSettingsMap* host_content_settings_map,
const content::WebPluginInfo& plugin,
const url::Origin& main_frame_origin,
const GURL& plugin_url,
const std::string& resource,
ContentSetting* setting,
bool* is_default,
bool* is_managed) {
GURL main_frame_url = main_frame_origin.GetURL();
content_settings::SettingInfo info;
bool uses_plugin_specific_setting = false;
*setting = host_content_settings_map->GetContentSetting(
main_frame_url, main_frame_url, ContentSettingsType::JAVASCRIPT, &info);
bool uses_default_content_setting =
!uses_plugin_specific_setting &&
info.primary_pattern == ContentSettingsPattern::Wildcard() &&
info.secondary_pattern == ContentSettingsPattern::Wildcard();
if (is_default)
*is_default = uses_default_content_setting;
if (is_managed)
*is_managed = info.source == content_settings::SettingSource::kPolicy;
}
// static
std::string PluginUtils::GetExtensionIdForMimeType(
content::BrowserContext* browser_context,
const std::string& mime_type) {
auto map = GetMimeTypeToExtensionIdMap(browser_context);
auto it = map.find(mime_type);
if (it != map.end())
return it->second;
return std::string();
}
base::flat_map<std::string, std::string>
PluginUtils::GetMimeTypeToExtensionIdMap(
content::BrowserContext* browser_context) {
base::flat_map<std::string, std::string> mime_type_to_extension_id_map;
#if BUILDFLAG(ENABLE_EXTENSIONS)
Profile* profile = Profile::FromBrowserContext(browser_context);
if (extensions::ChromeContentBrowserClientExtensionsPart::
AreExtensionsDisabledForProfile(profile)) {
return mime_type_to_extension_id_map;
}
const std::vector<std::string>& allowlist =
MimeTypesHandler::GetMIMETypeAllowlist();
// Go through the allowed extensions and try to use them to intercept
// the URL request.
extensions::ExtensionRegistry* registry =
extensions::ExtensionRegistry::Get(browser_context);
DCHECK(registry);
for (const std::string& extension_id : allowlist) {
const extensions::Extension* extension =
registry->enabled_extensions().GetByID(extension_id);
// The allowed extension may not be installed, so we have to nullptr
// check |extension|.
if (!extension ||
(profile->IsOffTheRecord() && !extensions::util::IsIncognitoEnabled(
extension_id, browser_context))) {
continue;
}
if (extension_id == extension_misc::kPdfExtensionId &&
profile->GetPrefs()->GetBoolean(
prefs::kPluginsAlwaysOpenPdfExternally)) {
continue;
}
if (MimeTypesHandler* handler = MimeTypesHandler::GetHandler(extension)) {
for (const auto& supported_mime_type : handler->mime_type_set()) {
// If multiple are installed, Quickoffice extensions may clobber ones
// earlier in the allowlist. Silently allow this (logging causes ~100
// lines of output since this function is invoked 3 times during startup
// for ~30 mime types).
mime_type_to_extension_id_map[supported_mime_type] = extension_id;
}
}
}
#endif
return mime_type_to_extension_id_map;
}
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