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content / browser / download / save_file_manager.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/download/save_file_manager.h"
#include <string_view>
#include <utility>
#include "base/containers/contains.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "base/strings/string_util.h"
#include "build/build_config.h"
#include "components/download/public/common/download_task_runner.h"
#include "content/browser/child_process_security_policy_impl.h"
#include "content/browser/data_url_loader_factory.h"
#include "content/browser/download/save_file.h"
#include "content/browser/download/save_package.h"
#include "content/browser/file_system/file_system_url_loader_factory.h"
#include "content/browser/loader/file_url_loader_factory.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/storage_partition_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/shared_cors_origin_access_list.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/web_ui_url_loader_factory.h"
#include "content/public/common/content_client.h"
#include "content/public/common/url_constants.h"
#include "net/base/isolation_info.h"
#include "net/base/load_flags.h"
#include "net/cookies/site_for_cookies.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/simple_url_loader.h"
#include "services/network/public/cpp/simple_url_loader_stream_consumer.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "storage/browser/file_system/native_file_util.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace content {
namespace {
// Pointer to the singleton SaveFileManager instance.
static SaveFileManager* g_save_file_manager = nullptr;
} // namespace
class SaveFileManager::SimpleURLLoaderHelper
: public network::SimpleURLLoaderStreamConsumer {
public:
using URLLoaderCompleteCallback = base::OnceCallback<void(bool success)>;
static std::unique_ptr<SimpleURLLoaderHelper> CreateAndStartDownload(
std::unique_ptr<network::ResourceRequest> resource_request,
SaveItemId save_item_id,
SavePackageId save_package_id,
int render_process_id,
int render_frame_routing_id,
const net::NetworkTrafficAnnotationTag& annotation_tag,
network::mojom::URLLoaderFactory* url_loader_factory,
SaveFileManager* save_file_manager,
URLLoaderCompleteCallback on_complete_cb) {
return std::unique_ptr<SimpleURLLoaderHelper>(new SimpleURLLoaderHelper(
std::move(resource_request), save_item_id, save_package_id,
render_process_id, render_frame_routing_id, annotation_tag,
url_loader_factory, save_file_manager, std::move(on_complete_cb)));
}
SimpleURLLoaderHelper(const SimpleURLLoaderHelper&) = delete;
SimpleURLLoaderHelper& operator=(const SimpleURLLoaderHelper&) = delete;
~SimpleURLLoaderHelper() override = default;
private:
SimpleURLLoaderHelper(
std::unique_ptr<network::ResourceRequest> resource_request,
SaveItemId save_item_id,
SavePackageId save_package_id,
int render_process_id,
int render_frame_routing_id,
const net::NetworkTrafficAnnotationTag& annotation_tag,
network::mojom::URLLoaderFactory* url_loader_factory,
SaveFileManager* save_file_manager,
URLLoaderCompleteCallback on_complete_cb)
: save_file_manager_(save_file_manager),
save_item_id_(save_item_id),
save_package_id_(save_package_id),
on_complete_cb_(std::move(on_complete_cb)) {
GURL url = resource_request->url;
url_loader_ = network::SimpleURLLoader::Create(std::move(resource_request),
annotation_tag);
// We can use Unretained below as |url_loader_| is owned by |this|, so the
// callback won't be invoked if |this| gets deleted.
url_loader_->SetOnResponseStartedCallback(base::BindOnce(
&SimpleURLLoaderHelper::OnResponseStarted, base::Unretained(this), url,
render_process_id, render_frame_routing_id));
url_loader_->DownloadAsStream(url_loader_factory, this);
}
void OnResponseStarted(GURL url,
int render_process_id,
int render_frame_routing_id,
const GURL& final_url,
const network::mojom::URLResponseHead& response_head) {
std::string content_disposition;
if (response_head.headers) {
content_disposition =
response_head.headers->GetNormalizedHeader("Content-Disposition")
.value_or(std::string());
}
auto info = std::make_unique<SaveFileCreateInfo>(
url, final_url, save_item_id_, save_package_id_, render_process_id,
render_frame_routing_id, content_disposition);
download::GetDownloadTaskRunner()->PostTask(
FROM_HERE, base::BindOnce(&SaveFileManager::StartSave,
save_file_manager_, std::move(info)));
}
// network::SimpleURLLoaderStreamConsumer implementation:
void OnDataReceived(std::string_view string_piece,
base::OnceClosure resume) override {
// TODO(jcivelli): we should make threading sane and avoid copying
// |string_piece| bytes.
download::GetDownloadTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&SaveFileManager::UpdateSaveProgress, save_file_manager_,
save_item_id_, std::string(string_piece)));
std::move(resume).Run();
}
void OnComplete(bool success) override {
download::GetDownloadTaskRunner()->PostTask(
FROM_HERE, base::BindOnce(std::move(on_complete_cb_), success));
}
void OnRetry(base::OnceClosure start_retry) override {
// Retries are not enabled.
NOTREACHED_IN_MIGRATION();
}
raw_ptr<SaveFileManager> save_file_manager_;
SaveItemId save_item_id_;
SavePackageId save_package_id_;
std::unique_ptr<network::SimpleURLLoader> url_loader_;
URLLoaderCompleteCallback on_complete_cb_;
};
SaveFileManager::SaveFileManager() {
DCHECK(g_save_file_manager == nullptr);
g_save_file_manager = this;
}
SaveFileManager::~SaveFileManager() {
// Check for clean shutdown.
DCHECK(save_file_map_.empty());
DCHECK(g_save_file_manager);
g_save_file_manager = nullptr;
}
// static
SaveFileManager* SaveFileManager::Get() {
return g_save_file_manager;
}
// Called during the browser shutdown process to clean up any state (open files,
// timers) that live on the saving thread (file thread).
void SaveFileManager::Shutdown() {
download::GetDownloadTaskRunner()->PostTask(
FROM_HERE, base::BindOnce(&SaveFileManager::OnShutdown, this));
}
// Stop file thread operations.
void SaveFileManager::OnShutdown() {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
save_file_map_.clear();
}
SaveFile* SaveFileManager::LookupSaveFile(SaveItemId save_item_id) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
auto it = save_file_map_.find(save_item_id);
return it == save_file_map_.end() ? nullptr : it->second.get();
}
// Look up a SavePackage according to a save id.
SavePackage* SaveFileManager::LookupPackage(SaveItemId save_item_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
auto it = packages_.find(save_item_id);
if (it != packages_.end())
return it->second;
return nullptr;
}
// Call from SavePackage for starting a saving job
void SaveFileManager::SaveURL(
SaveItemId save_item_id,
const GURL& url,
const Referrer& referrer,
const net::IsolationInfo& isolation_info,
network::mojom::RequestMode request_mode,
bool is_outermost_main_frame,
int render_process_host_id,
int render_view_routing_id,
int render_frame_routing_id,
SaveFileCreateInfo::SaveFileSource save_source,
const base::FilePath& file_full_path,
BrowserContext* context,
StoragePartition* storage_partition,
SavePackage* save_package,
const std::string& client_guid,
mojo::PendingRemote<quarantine::mojom::Quarantine> remote_quarantine) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// Insert started saving job to tracking list.
DCHECK(!base::Contains(packages_, save_item_id));
packages_[save_item_id] = save_package;
// Register a saving job.
if (save_source == SaveFileCreateInfo::SAVE_FILE_FROM_NET) {
DCHECK(url.is_valid());
// Starts the actual download.
if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
render_process_host_id, url)) {
download::GetDownloadTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&SaveFileManager::SaveFinished, this, save_item_id,
save_package->id(), /*success=*/false));
return;
}
net::NetworkTrafficAnnotationTag traffic_annotation =
net::DefineNetworkTrafficAnnotation("save_file_manager", R"(
semantics {
sender: "Save File"
description: "Saving url to local file."
trigger:
"User clicks on 'Save link as...' context menu command to save a "
"link."
data: "None."
destination: WEBSITE
}
policy {
cookies_allowed: YES
cookies_store: "user"
setting:
"This feature cannot be disable by settings. The request is made "
"only if user chooses 'Save link as...' in context menu."
policy_exception_justification: "Not implemented."
})");
auto request = std::make_unique<network::ResourceRequest>();
request->url = url;
request->referrer = referrer.url;
request->priority = net::DEFAULT_PRIORITY;
request->load_flags = net::LOAD_SKIP_CACHE_VALIDATION;
request->mode = request_mode;
if (request_mode == network::mojom::RequestMode::kNavigate) {
request->update_first_party_url_on_redirect = true;
}
request->is_outermost_main_frame = is_outermost_main_frame;
request->trusted_params = network::ResourceRequest::TrustedParams();
request->trusted_params->isolation_info = isolation_info;
request->site_for_cookies = isolation_info.site_for_cookies();
network::mojom::URLLoaderFactory* factory = nullptr;
mojo::Remote<network::mojom::URLLoaderFactory> factory_remote;
auto* rfh = RenderFrameHostImpl::FromID(render_process_host_id,
render_frame_routing_id);
// TODO(qinmin): should this match the if statements in
// DownloadManagerImpl::BeginResourceDownloadOnChecksComplete so that it
// can handle blob, file, webui, embedder provided schemes etc?
// https://crbug.com/953967
if (url.SchemeIs(url::kDataScheme)) {
factory_remote.Bind(DataURLLoaderFactory::Create());
factory = factory_remote.get();
} else if (url.SchemeIsFile()) {
factory_remote.Bind(FileURLLoaderFactory::Create(
context->GetPath(), context->GetSharedCorsOriginAccessList(),
base::TaskPriority::USER_VISIBLE));
factory = factory_remote.get();
} else if (url.SchemeIsFileSystem() && rfh) {
auto* storage_partition_impl =
static_cast<StoragePartitionImpl*>(storage_partition);
auto partition_domain =
rfh->GetSiteInstance()->GetPartitionDomain(storage_partition_impl);
factory_remote.Bind(CreateFileSystemURLLoaderFactory(
rfh->GetProcess()->GetID(), rfh->GetFrameTreeNodeId(),
storage_partition->GetFileSystemContext(), partition_domain,
static_cast<RenderFrameHostImpl*>(rfh)->GetStorageKey()));
factory = factory_remote.get();
} else if (rfh && url.SchemeIs(content::kChromeUIScheme)) {
factory_remote.Bind(CreateWebUIURLLoaderFactory(rfh, url.scheme(), {}));
factory = factory_remote.get();
} else {
factory = storage_partition->GetURLLoaderFactoryForBrowserProcess().get();
}
base::OnceCallback<void(bool /*success*/)> save_finished_cb =
base::BindOnce(&SaveFileManager::OnURLLoaderComplete, this,
save_item_id, save_package->id(),
context->IsOffTheRecord() ? GURL() : url,
context->IsOffTheRecord() ? GURL() : referrer.url,
client_guid, std::move(remote_quarantine));
url_loader_helpers_[save_item_id] =
SimpleURLLoaderHelper::CreateAndStartDownload(
std::move(request), save_item_id, save_package->id(),
render_process_host_id, render_frame_routing_id, traffic_annotation,
factory, this, std::move(save_finished_cb));
} else {
// We manually start the save job.
auto info = std::make_unique<SaveFileCreateInfo>(
file_full_path, url, save_item_id, save_package->id(),
render_process_host_id, render_frame_routing_id, save_source);
// Since the data will come from render process, so we need to start
// this kind of save job by ourself.
download::GetDownloadTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&SaveFileManager::StartSave, this, std::move(info)));
}
}
// Utility function for look up table maintenance, called on the UI thread.
// A manager may have multiple save page job (SavePackage) in progress,
// so we just look up the save id and remove it from the tracking table.
void SaveFileManager::RemoveSaveFile(SaveItemId save_item_id,
SavePackage* save_package) {
DCHECK(save_package);
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// A save page job (SavePackage) can only have one manager,
// so remove it if it exists.
auto it = packages_.find(save_item_id);
if (it != packages_.end())
packages_.erase(it);
}
// Static
SavePackage* SaveFileManager::GetSavePackageFromRenderIds(
int render_process_id,
int render_frame_routing_id) {
RenderFrameHost* render_frame_host =
RenderFrameHost::FromID(render_process_id, render_frame_routing_id);
if (!render_frame_host)
return nullptr;
WebContentsImpl* web_contents =
static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(
render_frame_host));
if (!web_contents)
return nullptr;
return web_contents->save_package();
}
void SaveFileManager::SendCancelRequest(SaveItemId save_item_id) {
// Cancel the request which has specific save id.
DCHECK(!save_item_id.is_null());
download::GetDownloadTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&SaveFileManager::CancelSave, this, save_item_id));
}
void SaveFileManager::OnURLLoaderComplete(
SaveItemId save_item_id,
SavePackageId save_package_id,
const GURL& url,
const GURL& referrer_url,
const std::string& client_guid,
mojo::PendingRemote<quarantine::mojom::Quarantine> remote_quarantine,
bool is_success) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
SaveFile* save_file = LookupSaveFile(save_item_id);
if (!is_success || !save_file) {
SaveFinished(save_item_id, save_package_id, is_success);
return;
}
save_file->AnnotateWithSourceInformation(
client_guid, url, referrer_url, std::move(remote_quarantine),
base::BindOnce(&SaveFileManager::OnQuarantineComplete, this, save_item_id,
save_package_id));
}
void SaveFileManager::OnQuarantineComplete(
SaveItemId save_item_id,
SavePackageId save_package_id,
download::DownloadInterruptReason result) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
SaveFinished(save_item_id, save_package_id,
result == download::DOWNLOAD_INTERRUPT_REASON_NONE);
}
// Notifications sent from the IO thread and run on the file thread:
// The IO thread created |info|, but the file thread (this method) uses it
// to create a SaveFile which will hold and finally destroy |info|. It will
// then passes |info| to the UI thread for reporting saving status.
void SaveFileManager::StartSave(std::unique_ptr<SaveFileCreateInfo> info) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
DCHECK(info);
// No need to calculate hash.
auto save_file =
std::make_unique<SaveFile>(std::move(info), /*calculate_hash=*/false);
// TODO(phajdan.jr): We should check the return value and handle errors here.
save_file->Initialize();
const SaveFileCreateInfo& save_file_create_info = save_file->create_info();
DCHECK(!LookupSaveFile(save_file->save_item_id()));
save_file_map_[save_file->save_item_id()] = std::move(save_file);
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&SaveFileManager::OnStartSave, this,
save_file_create_info));
}
// We do forward an update to the UI thread here, since we do not use timer to
// update the UI. If the user has canceled the saving action (in the UI
// thread). We may receive a few more updates before the IO thread gets the
// cancel message. We just delete the data since the SaveFile has been deleted.
void SaveFileManager::UpdateSaveProgress(SaveItemId save_item_id,
const std::string& data) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
SaveFile* save_file = LookupSaveFile(save_item_id);
if (save_file) {
DCHECK(save_file->InProgress());
download::DownloadInterruptReason reason =
save_file->AppendDataToFile(data.data(), data.size());
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&SaveFileManager::OnUpdateSaveProgress, this,
save_file->save_item_id(), save_file->BytesSoFar(),
reason == download::DOWNLOAD_INTERRUPT_REASON_NONE));
}
}
// The IO thread will call this when saving is completed or it got error when
// fetching data. We forward the message to OnSaveFinished in UI thread.
void SaveFileManager::SaveFinished(SaveItemId save_item_id,
SavePackageId save_package_id,
bool is_success) {
DVLOG(20) << __func__ << "() save_item_id = " << save_item_id
<< " save_package_id = " << save_package_id
<< " is_success = " << is_success;
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
int64_t bytes_so_far = 0;
SaveFile* save_file = LookupSaveFile(save_item_id);
// Note that we might not have a save_file: canceling starts on the download
// thread but the load is canceled on the UI thread. The request might finish
// while thread hoping.
if (save_file) {
DCHECK(save_file->InProgress());
DVLOG(20) << __func__ << "() save_file = " << save_file->DebugString();
bytes_so_far = save_file->BytesSoFar();
save_file->Finish();
save_file->Detach();
}
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&SaveFileManager::OnSaveFinished, this,
save_item_id, bytes_so_far, is_success));
}
// Notifications sent from the file thread and run on the UI thread.
void SaveFileManager::OnStartSave(const SaveFileCreateInfo& info) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
SavePackage* save_package = GetSavePackageFromRenderIds(
info.render_process_id, info.render_frame_routing_id);
if (!save_package) {
// Cancel this request.
SendCancelRequest(info.save_item_id);
return;
}
// Forward this message to SavePackage.
save_package->StartSave(&info);
}
void SaveFileManager::OnUpdateSaveProgress(SaveItemId save_item_id,
int64_t bytes_so_far,
bool write_success) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
SavePackage* package = LookupPackage(save_item_id);
if (package)
package->UpdateSaveProgress(save_item_id, bytes_so_far, write_success);
else
SendCancelRequest(save_item_id);
}
void SaveFileManager::OnSaveFinished(SaveItemId save_item_id,
int64_t bytes_so_far,
bool is_success) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ClearURLLoader(save_item_id);
SavePackage* package = LookupPackage(save_item_id);
if (package)
package->SaveFinished(save_item_id, bytes_so_far, is_success);
}
// Notifications sent from the UI thread and run on the file thread.
// This method will be sent via a user action, or shutdown on the UI thread,
// and run on the file thread. We don't post a message back for cancels,
// but we do forward the cancel to the IO thread. Since this message has been
// sent from the UI thread, the saving job may have already completed and
// won't exist in our map.
void SaveFileManager::CancelSave(SaveItemId save_item_id) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
auto it = save_file_map_.find(save_item_id);
if (it != save_file_map_.end()) {
std::unique_ptr<SaveFile> save_file = std::move(it->second);
if (!save_file->InProgress()) {
// We've won a race with the UI thread--we finished the file before
// the UI thread cancelled it on us. Unfortunately, in this situation
// the cancel wins, so we need to delete the now detached file.
base::DeleteFile(save_file->FullPath());
} else if (save_file->save_source() ==
SaveFileCreateInfo::SAVE_FILE_FROM_NET) {
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&SaveFileManager::ClearURLLoader, this, save_item_id));
}
// Whatever the save file is complete or not, just delete it. This
// will delete the underlying file if InProgress() is true.
save_file_map_.erase(it);
}
}
void SaveFileManager::ClearURLLoader(SaveItemId save_item_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
auto url_loader_iter = url_loader_helpers_.find(save_item_id);
if (url_loader_iter != url_loader_helpers_.end())
url_loader_helpers_.erase(url_loader_iter);
}
void SaveFileManager::RenameAllFiles(const FinalNamesMap& final_names,
const base::FilePath& resource_dir,
int render_process_id,
int render_frame_routing_id,
SavePackageId save_package_id) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
if (!resource_dir.empty() && !base::PathExists(resource_dir)) {
// Use `NativeFileUtil::CreateDirectory` instead of `base::CreateDirectory`
// to set the correct permissions on ChromeOS.
storage::NativeFileUtil::CreateDirectory(resource_dir, /*exclusive=*/false,
/*recursive=*/true);
}
for (const auto& i : final_names) {
SaveItemId save_item_id = i.first;
const base::FilePath& final_name = i.second;
auto it = save_file_map_.find(save_item_id);
if (it != save_file_map_.end()) {
SaveFile* save_file = it->second.get();
DCHECK(!save_file->InProgress());
save_file->Rename(final_name);
save_file_map_.erase(it);
}
}
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&SaveFileManager::OnFinishSavePageJob, this,
render_process_id, render_frame_routing_id,
save_package_id));
}
void SaveFileManager::OnFinishSavePageJob(int render_process_id,
int render_frame_routing_id,
SavePackageId save_package_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
SavePackage* save_package =
GetSavePackageFromRenderIds(render_process_id, render_frame_routing_id);
if (save_package && save_package->id() == save_package_id)
save_package->Finish();
}
void SaveFileManager::RemoveSavedFileFromFileMap(
const std::vector<SaveItemId>& save_item_ids) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
for (const SaveItemId save_item_id : save_item_ids) {
auto it = save_file_map_.find(save_item_id);
if (it != save_file_map_.end()) {
SaveFile* save_file = it->second.get();
DCHECK(!save_file->InProgress());
base::DeleteFile(save_file->FullPath());
save_file_map_.erase(it);
}
}
}
void SaveFileManager::GetSaveFilePaths(
const std::vector<std::pair<SaveItemId, base::FilePath>>&
ids_and_final_paths,
base::OnceCallback<void(base::flat_map<base::FilePath, base::FilePath>)>
callback) {
DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
base::flat_map<base::FilePath, base::FilePath> tmp_paths_and_final_paths;
for (const auto& id_and_final_path : ids_and_final_paths) {
auto it = save_file_map_.find(id_and_final_path.first);
if (it != save_file_map_.end() && !it->second->FullPath().empty() &&
!id_and_final_path.second.empty()) {
tmp_paths_and_final_paths.insert(
{it->second->FullPath(), id_and_final_path.second});
}
}
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(callback),
std::move(tmp_paths_and_final_paths)));
}
} // namespace content