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// Copyright 2015 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 "mojo/shell/package_manager/package_manager_impl.h"
#include <stdint.h>
#include <utility>
#include "base/bind.h"
#include "mojo/shell/application_manager.h"
#include "mojo/shell/connect_util.h"
#include "mojo/shell/fetcher/about_fetcher.h"
#include "mojo/shell/fetcher/data_fetcher.h"
#include "mojo/shell/fetcher/local_fetcher.h"
#include "mojo/shell/fetcher/network_fetcher.h"
#include "mojo/shell/fetcher/switches.h"
#include "mojo/shell/package_manager/content_handler_connection.h"
#include "mojo/shell/public/interfaces/content_handler.mojom.h"
#include "mojo/shell/query_util.h"
#include "mojo/shell/switches.h"
#include "mojo/util/filename_util.h"
#include "url/gurl.h"
namespace mojo {
namespace shell {
PackageManagerImpl::PackageManagerImpl(
const base::FilePath& shell_file_root,
base::TaskRunner* task_runner)
: application_manager_(nullptr),
disable_cache_(base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableCache)),
content_handler_id_counter_(0u),
task_runner_(task_runner),
shell_file_root_(shell_file_root) {
if (!shell_file_root.empty()) {
GURL mojo_root_file_url =
util::FilePathToFileURL(shell_file_root).Resolve(std::string());
url_resolver_.reset(new URLResolver(mojo_root_file_url));
}
}
PackageManagerImpl::~PackageManagerImpl() {
IdentityToContentHandlerMap identity_to_content_handler(
identity_to_content_handler_);
for (auto& pair : identity_to_content_handler)
pair.second->CloseConnection();
}
void PackageManagerImpl::RegisterContentHandler(
const std::string& mime_type,
const GURL& content_handler_url) {
DCHECK(content_handler_url.is_valid())
<< "Content handler URL is invalid for mime type " << mime_type;
mime_type_to_url_[mime_type] = content_handler_url;
}
void PackageManagerImpl::RegisterApplicationPackageAlias(
const GURL& alias,
const GURL& content_handler_package,
const std::string& qualifier) {
application_package_alias_[alias] =
std::make_pair(content_handler_package, qualifier);
}
void PackageManagerImpl::SetApplicationManager(ApplicationManager* manager) {
application_manager_ = manager;
}
void PackageManagerImpl::FetchRequest(
URLRequestPtr request,
const Fetcher::FetchCallback& loader_callback) {
GURL url(request->url);
if (url.SchemeIs(AboutFetcher::kAboutScheme)) {
AboutFetcher::Start(url, loader_callback);
return;
}
if (url.SchemeIs(url::kDataScheme)) {
DataFetcher::Start(url, loader_callback);
return;
}
GURL resolved_url = ResolveURL(url);
if (resolved_url.SchemeIsFile()) {
// LocalFetcher uses the network service to infer MIME types from URLs.
// Skip this for mojo URLs to avoid recursively loading the network service.
if (!network_service_ && !url.SchemeIs("mojo") && !url.SchemeIs("exe")) {
ConnectToService(application_manager_, GURL("mojo:network_service"),
&network_service_);
}
// Ownership of this object is transferred to |loader_callback|.
// TODO(beng): this is eff'n weird.
new LocalFetcher(network_service_.get(), resolved_url,
GetBaseURLAndQuery(resolved_url, nullptr),
shell_file_root_, loader_callback);
return;
}
if (!url_loader_factory_) {
ConnectToService(application_manager_, GURL("mojo:network_service"),
&url_loader_factory_);
}
// Ownership of this object is transferred to |loader_callback|.
// TODO(beng): this is eff'n weird.
new NetworkFetcher(disable_cache_, std::move(request),
url_loader_factory_.get(), loader_callback);
}
uint32_t PackageManagerImpl::HandleWithContentHandler(
Fetcher* fetcher,
const Identity& source,
const GURL& target_url,
const CapabilityFilter& target_filter,
InterfaceRequest<Application>* application_request) {
Identity content_handler_identity;
URLResponsePtr response;
if (ShouldHandleWithContentHandler(fetcher,
target_url,
target_filter,
&content_handler_identity,
&response)) {
ContentHandlerConnection* connection =
GetContentHandler(content_handler_identity, source);
connection->StartApplication(std::move(*application_request),
std::move(response));
return connection->id();
}
return Shell::kInvalidContentHandlerID;
}
GURL PackageManagerImpl::ResolveURL(const GURL& url) {
return url_resolver_.get() ? url_resolver_->ResolveMojoURL(url) : url;
}
bool PackageManagerImpl::ShouldHandleWithContentHandler(
Fetcher* fetcher,
const GURL& target_url,
const CapabilityFilter& target_filter,
Identity* content_handler_identity,
URLResponsePtr* response) const {
// TODO(beng): it seems like some delegate should/would want to have a say in
// configuring the qualifier also.
// Why can't we use the real qualifier in single process mode? Because of
// base::AtExitManager. If you link in ApplicationRunner into your code, and
// then we make initialize multiple copies of the application, we end up
// with multiple AtExitManagers and will check on the second one being
// created.
//
// Why doesn't that happen when running different apps? Because
// your_thing.mojo!base::AtExitManager and
// my_thing.mojo!base::AtExitManager are different symbols.
bool use_real_qualifier = base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableMultiprocess);
GURL content_handler_url;
// The response begins with a #!mojo <content-handler-url>.
std::string shebang;
if (fetcher->PeekContentHandler(&shebang, &content_handler_url)) {
*response = fetcher->AsURLResponse(task_runner_,
static_cast<int>(shebang.size()));
*content_handler_identity = Identity(
content_handler_url,
use_real_qualifier ? (*response)->site.To<std::string>()
: std::string(),
target_filter);
return true;
}
// The response MIME type matches a registered content handler.
auto iter = mime_type_to_url_.find(fetcher->MimeType());
if (iter != mime_type_to_url_.end()) {
*response = fetcher->AsURLResponse(task_runner_, 0);
*content_handler_identity = Identity(
iter->second,
use_real_qualifier ? (*response)->site.To<std::string>()
: std::string(),
target_filter);
return true;
}
// The response URL matches a registered content handler.
auto alias_iter = application_package_alias_.find(target_url);
if (alias_iter != application_package_alias_.end()) {
// We replace the qualifier with the one our package alias requested.
*response = URLResponse::New();
(*response)->url = target_url.spec();
*content_handler_identity = Identity(
alias_iter->second.first,
use_real_qualifier ? alias_iter->second.second : std::string(),
target_filter);
return true;
}
return false;
}
ContentHandlerConnection* PackageManagerImpl::GetContentHandler(
const Identity& content_handler_identity,
const Identity& source_identity) {
auto it = identity_to_content_handler_.find(content_handler_identity);
if (it != identity_to_content_handler_.end())
return it->second;
ContentHandlerConnection* connection = new ContentHandlerConnection(
application_manager_, source_identity,
content_handler_identity,
++content_handler_id_counter_,
base::Bind(&PackageManagerImpl::OnContentHandlerConnectionClosed,
base::Unretained(this)));
identity_to_content_handler_[content_handler_identity] = connection;
return connection;
}
void PackageManagerImpl::OnContentHandlerConnectionClosed(
ContentHandlerConnection* connection) {
// Remove the mapping.
auto it = identity_to_content_handler_.find(connection->identity());
DCHECK(it != identity_to_content_handler_.end());
identity_to_content_handler_.erase(it);
}
} // namespace shell
} // namespace mojo
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