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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/common/extensions/web_intents_handler.h"
#include "base/lazy_instance.h"
#include "base/memory/scoped_ptr.h"
#include "base/string_number_conversions.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/common/extensions/extension_manifest_constants.h"
#include "chrome/common/extensions/manifest.h"
#include "extensions/common/error_utils.h"
#include "webkit/glue/web_intent_service_data.h"
namespace extensions {
namespace keys = extension_manifest_keys;
namespace values = extension_manifest_values;
namespace errors = extension_manifest_errors;
namespace {
// Parses a single web intent action in the manifest.
bool LoadWebIntentsAction(const std::string& action_name,
const DictionaryValue& intent_service,
Extension* extension,
string16* error,
WebIntentServiceDataList* intents_services) {
DCHECK(error);
webkit_glue::WebIntentServiceData service;
std::string value;
service.action = UTF8ToUTF16(action_name);
const ListValue* mime_types = NULL;
if (!intent_service.HasKey(keys::kIntentType) ||
!intent_service.GetList(keys::kIntentType, &mime_types) ||
mime_types->GetSize() == 0) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidIntentType, action_name);
return false;
}
std::string href;
if (intent_service.HasKey(keys::kIntentPath)) {
if (!intent_service.GetString(keys::kIntentPath, &href)) {
*error = ASCIIToUTF16(errors::kInvalidIntentHref);
return false;
}
}
if (intent_service.HasKey(keys::kIntentHref)) {
if (!href.empty()) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidIntentHrefOldAndNewKey, action_name,
keys::kIntentPath, keys::kIntentHref);
return false;
}
if (!intent_service.GetString(keys::kIntentHref, &href)) {
*error = ASCIIToUTF16(errors::kInvalidIntentHref);
return false;
}
}
// For packaged/hosted apps, empty href implies the respective launch URLs.
if (href.empty()) {
if (extension->is_hosted_app()) {
href = extension->launch_web_url();
} else if (extension->is_legacy_packaged_app()) {
href = extension->launch_local_path();
}
}
// If there still is not an href, the manifest is malformed, unless this is a
// platform app in which case the href should not be present.
if (href.empty() && !extension->is_platform_app()) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidIntentHrefEmpty, action_name);
return false;
} else if (!href.empty() && extension->is_platform_app()) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidIntentHrefInPlatformApp, action_name);
return false;
}
GURL service_url(href);
if (extension->is_hosted_app()) {
// Hosted apps require an absolute URL for intents.
if (!service_url.is_valid() ||
!(extension->web_extent().MatchesURL(service_url))) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidIntentPageInHostedApp, action_name);
return false;
}
service.service_url = service_url;
} else if (extension->is_platform_app()) {
service.service_url = extension->GetBackgroundURL();
} else {
// We do not allow absolute intent URLs in non-hosted apps.
if (service_url.is_valid()) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kCannotAccessPage, href);
return false;
}
service.service_url = extension->GetResourceURL(href);
}
if (intent_service.HasKey(keys::kIntentTitle) &&
!intent_service.GetString(keys::kIntentTitle, &service.title)) {
*error = ASCIIToUTF16(errors::kInvalidIntentTitle);
return false;
}
if (intent_service.HasKey(keys::kIntentDisposition)) {
if (extension->is_platform_app()) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidIntentDispositionInPlatformApp, action_name);
return false;
}
if (!intent_service.GetString(keys::kIntentDisposition, &value) ||
(value != values::kIntentDispositionWindow &&
value != values::kIntentDispositionInline)) {
*error = ASCIIToUTF16(errors::kInvalidIntentDisposition);
return false;
}
if (value == values::kIntentDispositionInline) {
service.disposition =
webkit_glue::WebIntentServiceData::DISPOSITION_INLINE;
} else {
service.disposition =
webkit_glue::WebIntentServiceData::DISPOSITION_WINDOW;
}
}
for (size_t i = 0; i < mime_types->GetSize(); ++i) {
if (!mime_types->GetString(i, &service.type)) {
*error = ErrorUtils::FormatErrorMessageUTF16(
errors::kInvalidIntentTypeElement, action_name,
std::string(base::IntToString(i)));
return false;
}
intents_services->push_back(service);
}
return true;
}
} // namespace
WebIntentsInfo::WebIntentsInfo() {}
WebIntentsInfo::~WebIntentsInfo() {}
static base::LazyInstance<WebIntentServiceDataList> g_empty_intents_data =
LAZY_INSTANCE_INITIALIZER;
// static
const WebIntentServiceDataList& WebIntentsInfo::GetIntentsServices(
const Extension* extension) {
WebIntentsInfo* info = static_cast<WebIntentsInfo*>(
extension->GetManifestData(keys::kIntents));
return info ? info->intents_services_ : g_empty_intents_data.Get();
}
WebIntentsHandler::WebIntentsHandler() {
}
WebIntentsHandler::~WebIntentsHandler() {
}
bool WebIntentsHandler::Parse(Extension* extension, string16* error) {
scoped_ptr<WebIntentsInfo> info(new WebIntentsInfo);
const DictionaryValue* all_services = NULL;
if (!extension->manifest()->GetDictionary(keys::kIntents, &all_services)) {
*error = ASCIIToUTF16(errors::kInvalidIntents);
return false;
}
for (DictionaryValue::key_iterator iter(all_services->begin_keys());
iter != all_services->end_keys(); ++iter) {
// Any entry in the intents dictionary can either have a list of
// dictionaries, or just a single dictionary attached to that. Try
// lists first, fall back to single dictionary.
const ListValue* service_list = NULL;
const DictionaryValue* one_service = NULL;
if (all_services->GetListWithoutPathExpansion(*iter, &service_list)) {
for (size_t i = 0; i < service_list->GetSize(); ++i) {
if (!service_list->GetDictionary(i, &one_service)) {
*error = ASCIIToUTF16(errors::kInvalidIntent);
return false;
}
if (!LoadWebIntentsAction(*iter, *one_service, extension,
error, &info->intents_services_))
return false;
}
} else {
if (!all_services->GetDictionaryWithoutPathExpansion(*iter,
&one_service)) {
*error = ASCIIToUTF16(errors::kInvalidIntent);
return false;
}
if (!LoadWebIntentsAction(*iter, *one_service, extension,
error, &info->intents_services_))
return false;
}
}
extension->SetManifestData(keys::kIntents, info.release());
return true;
}
} // namespace extensions
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