// 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 "content/browser/download/save_package.h" #include #include #include "base/bind.h" #include "base/files/file_path.h" #include "base/files/file_util.h" #include "base/i18n/file_util_icu.h" #include "base/logging.h" #include "base/macros.h" #include "base/memory/ptr_util.h" #include "base/message_loop/message_loop.h" #include "base/stl_util.h" #include "base/strings/string_piece.h" #include "base/strings/string_split.h" #include "base/strings/sys_string_conversions.h" #include "base/strings/utf_string_conversions.h" #include "base/threading/thread.h" #include "build/build_config.h" #include "components/url_formatter/url_formatter.h" #include "content/browser/bad_message.h" #include "content/browser/download/download_item_impl.h" #include "content/browser/download/download_manager_impl.h" #include "content/browser/download/download_stats.h" #include "content/browser/download/save_file.h" #include "content/browser/download/save_file_manager.h" #include "content/browser/download/save_item.h" #include "content/browser/frame_host/frame_tree.h" #include "content/browser/frame_host/frame_tree_node.h" #include "content/browser/frame_host/render_frame_host_impl.h" #include "content/browser/loader/resource_dispatcher_host_impl.h" #include "content/browser/renderer_host/render_process_host_impl.h" #include "content/browser/renderer_host/render_view_host_delegate.h" #include "content/browser/renderer_host/render_view_host_impl.h" #include "content/common/frame_messages.h" #include "content/common/view_messages.h" #include "content/public/browser/browser_context.h" #include "content/public/browser/browser_thread.h" #include "content/public/browser/content_browser_client.h" #include "content/public/browser/download_manager_delegate.h" #include "content/public/browser/navigation_entry.h" #include "content/public/browser/notification_service.h" #include "content/public/browser/notification_types.h" #include "content/public/browser/render_frame_host.h" #include "content/public/browser/resource_context.h" #include "content/public/browser/web_contents.h" #include "content/public/common/mhtml_generation_params.h" #include "net/base/filename_util.h" #include "net/base/io_buffer.h" #include "net/base/mime_util.h" #include "net/url_request/url_request_context.h" #include "url/url_constants.h" namespace content { namespace { // Generates unique ids for SavePackage::unique_id_ field. SavePackageId GetNextSavePackageId() { static int g_save_package_id = 0; return SavePackageId::FromUnsafeValue(g_save_package_id++); } // Default name which will be used when we can not get proper name from // resource URL. const char kDefaultSaveName[] = "saved_resource"; // Maximum number of file ordinal number. I think it's big enough for resolving // name-conflict files which has same base file name. const int32_t kMaxFileOrdinalNumber = 9999; // Maximum length for file path. Since Windows have MAX_PATH limitation for // file path, we need to make sure length of file path of every saved file // is less than MAX_PATH #if defined(OS_WIN) const uint32_t kMaxFilePathLength = MAX_PATH - 1; #elif defined(OS_POSIX) const uint32_t kMaxFilePathLength = PATH_MAX - 1; #endif // Maximum length for file ordinal number part. Since we only support the // maximum 9999 for ordinal number, which means maximum file ordinal number part // should be "(9998)", so the value is 6. const uint32_t kMaxFileOrdinalNumberPartLength = 6; // Strip current ordinal number, if any. Should only be used on pure // file names, i.e. those stripped of their extensions. // TODO(estade): improve this to not choke on alternate encodings. base::FilePath::StringType StripOrdinalNumber( const base::FilePath::StringType& base_name) { base::FilePath::StringType::size_type r_paren_index = base_name.rfind(FILE_PATH_LITERAL(')')); base::FilePath::StringType::size_type l_paren_index = base_name.rfind(FILE_PATH_LITERAL('(')); if (l_paren_index >= r_paren_index) return base_name; for (base::FilePath::StringType::size_type i = l_paren_index + 1; i != r_paren_index; ++i) { if (!base::IsAsciiDigit(base_name[i])) return base_name; } return base_name.substr(0, l_paren_index); } // Check whether we can save page as complete-HTML for the contents which // have specified a MIME type. Now only contents which have the MIME type // "text/html" can be saved as complete-HTML. bool CanSaveAsComplete(const std::string& contents_mime_type) { return contents_mime_type == "text/html" || contents_mime_type == "application/xhtml+xml"; } // Request handle for SavePackage downloads. Currently doesn't support // pause/resume/cancel, but returns a WebContents. class SavePackageRequestHandle : public DownloadRequestHandleInterface { public: explicit SavePackageRequestHandle(base::WeakPtr save_package) : save_package_(save_package) {} // DownloadRequestHandleInterface WebContents* GetWebContents() const override { return save_package_.get() ? save_package_->web_contents() : nullptr; } DownloadManager* GetDownloadManager() const override { return nullptr; } void PauseRequest() const override {} void ResumeRequest() const override {} void CancelRequest() const override {} private: base::WeakPtr save_package_; }; } // namespace const base::FilePath::CharType SavePackage::kDefaultHtmlExtension[] = FILE_PATH_LITERAL("html"); SavePackage::SavePackage(WebContents* web_contents) : WebContentsObserver(web_contents), page_url_(GetUrlToBeSaved(web_contents)), title_(web_contents->GetTitle()), start_tick_(base::TimeTicks::Now()), file_name_set_(&base::FilePath::CompareLessIgnoreCase), unique_id_(GetNextSavePackageId()) { DCHECK_CURRENTLY_ON(BrowserThread::UI); InternalInit(); } // Used for tests. SavePackage::SavePackage(WebContents* web_contents, SavePageType save_type, const base::FilePath& file_full_path, const base::FilePath& directory_full_path) : WebContentsObserver(web_contents), page_url_(GetUrlToBeSaved(web_contents)), saved_main_file_path_(file_full_path), saved_main_directory_path_(directory_full_path), title_(web_contents->GetTitle()), start_tick_(base::TimeTicks::Now()), save_type_(save_type), file_name_set_(&base::FilePath::CompareLessIgnoreCase), unique_id_(GetNextSavePackageId()) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK((save_type_ == SAVE_PAGE_TYPE_AS_ONLY_HTML) || (save_type_ == SAVE_PAGE_TYPE_AS_MHTML) || (save_type_ == SAVE_PAGE_TYPE_AS_COMPLETE_HTML)) << save_type_; DCHECK(!saved_main_file_path_.empty() && saved_main_file_path_.value().length() <= kMaxFilePathLength); DCHECK(!saved_main_directory_path_.empty() && saved_main_directory_path_.value().length() < kMaxFilePathLength); InternalInit(); } SavePackage::~SavePackage() { DCHECK_CURRENTLY_ON(BrowserThread::UI); // Stop receiving saving job's updates if (!finished_ && !canceled()) { // Unexpected quit. Cancel(true); } // We should no longer be observing the DownloadItem at this point. CHECK(!download_); DCHECK_EQ(all_save_items_count_, waiting_item_queue_.size() + completed_count() + in_process_count()); // Free all SaveItems. waiting_item_queue_.clear(); in_progress_items_.clear(); saved_success_items_.clear(); saved_failed_items_.clear(); // Clear containers that contain (now dangling/invalid) pointers to the // save items freed above. This is not strictly required (as the containers // will be destructed soon by ~SavePackage), but seems like good code hygiene. frame_tree_node_id_to_contained_save_items_.clear(); frame_tree_node_id_to_save_item_.clear(); url_to_save_item_.clear(); file_manager_ = nullptr; } // static GURL SavePackage::GetUrlToBeSaved(WebContents* web_contents) { DCHECK_CURRENTLY_ON(BrowserThread::UI); // Instead of using web_contents->GetURL here, we call GetURL() (which is the // "real" url of the page) from the NavigationEntry because it reflects its // origin rather than the displayed one (returned by GetVirtualURL) which may // be different (like having "view-source:" on the front). NavigationEntry* visible_entry = web_contents->GetController().GetVisibleEntry(); return visible_entry ? visible_entry->GetURL() : GURL::EmptyGURL(); } void SavePackage::Cancel(bool user_action) { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (!canceled()) { if (user_action) user_canceled_ = true; else disk_error_occurred_ = true; Stop(); } RecordSavePackageEvent(SAVE_PACKAGE_CANCELLED); } // Init() can be called directly, or indirectly via GetSaveInfo(). In both // cases, we need file_manager_ to be initialized, so we do this first. void SavePackage::InternalInit() { DCHECK_CURRENTLY_ON(BrowserThread::UI); file_manager_ = SaveFileManager::Get(); DCHECK(file_manager_); download_manager_ = static_cast( BrowserContext::GetDownloadManager( web_contents()->GetBrowserContext())); DCHECK(download_manager_); RecordSavePackageEvent(SAVE_PACKAGE_STARTED); } bool SavePackage::Init( const SavePackageDownloadCreatedCallback& download_created_callback) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK(page_url_.is_valid()); // Set proper running state. if (wait_state_ != INITIALIZE) return false; wait_state_ = START_PROCESS; // Initialize the request context and resource dispatcher. BrowserContext* browser_context = web_contents()->GetBrowserContext(); if (!browser_context) { NOTREACHED(); return false; } std::unique_ptr request_handle( new SavePackageRequestHandle(AsWeakPtr())); // The download manager keeps ownership but adds us as an observer. download_manager_->CreateSavePackageDownloadItem( saved_main_file_path_, page_url_, ((save_type_ == SAVE_PAGE_TYPE_AS_MHTML) ? "multipart/related" : "text/html"), std::move(request_handle), base::Bind(&SavePackage::InitWithDownloadItem, AsWeakPtr(), download_created_callback)); return true; } void SavePackage::InitWithDownloadItem( const SavePackageDownloadCreatedCallback& download_created_callback, DownloadItemImpl* item) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK(item); download_ = item; download_->AddObserver(this); // Confirm above didn't delete the tab out from under us. if (!download_created_callback.is_null()) download_created_callback.Run(download_); // Check save type and process the save page job. if (save_type_ == SAVE_PAGE_TYPE_AS_COMPLETE_HTML) { // Get directory DCHECK(!saved_main_directory_path_.empty()); GetSavableResourceLinks(); } else if (save_type_ == SAVE_PAGE_TYPE_AS_MHTML) { MHTMLGenerationParams mhtml_generation_params(saved_main_file_path_); web_contents()->GenerateMHTML( mhtml_generation_params, base::Bind(&SavePackage::OnMHTMLGenerated, this)); } else { DCHECK_EQ(SAVE_PAGE_TYPE_AS_ONLY_HTML, save_type_); wait_state_ = NET_FILES; // Add this item to waiting list. waiting_item_queue_.push_back(base::WrapUnique(new SaveItem( page_url_, Referrer(), this, SaveFileCreateInfo::SAVE_FILE_FROM_NET, FrameTreeNode::kFrameTreeNodeInvalidId, web_contents()->GetMainFrame()->GetFrameTreeNodeId()))); all_save_items_count_ = 1; download_->SetTotalBytes(1); DoSavingProcess(); } } void SavePackage::OnMHTMLGenerated(int64_t size) { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (size <= 0) { Cancel(false); return; } wrote_to_completed_file_ = true; // Hack to avoid touching download_ after user cancel. // TODO(rdsmith/benjhayden): Integrate canceling on DownloadItem // with SavePackage flow. if (download_->GetState() == DownloadItem::IN_PROGRESS) { // Must call OnAllDataSaved here in order for // GDataDownloadObserver::ShouldUpload() to return true. // ShouldCompleteDownload() may depend on the gdata uploader to finish. download_->OnAllDataSaved(size, std::unique_ptr()); } if (!download_manager_->GetDelegate()) { Finish(); return; } if (download_manager_->GetDelegate()->ShouldCompleteDownload( download_, base::Bind(&SavePackage::Finish, this))) { Finish(); } } // On POSIX, the length of |base_name| + |file_name_ext| is further // restricted by NAME_MAX. The maximum allowed path looks like: // '/path/to/save_dir' + '/' + NAME_MAX. uint32_t SavePackage::GetMaxPathLengthForDirectory( const base::FilePath& base_dir) { #if defined(OS_POSIX) return std::min( kMaxFilePathLength, static_cast(base_dir.value().length()) + NAME_MAX + 1); #else return kMaxFilePathLength; #endif } bool SavePackage::TruncateBaseNameToFitPathConstraints( const base::FilePath& dir_path, const base::FilePath::StringType& file_name_ext, uint32_t max_file_path_len, base::FilePath::StringType* base_name) { DCHECK(!base_name->empty()); int available_length = static_cast(max_file_path_len - dir_path.value().length() - file_name_ext.length()); // Need an extra space for the separator. if (!dir_path.EndsWithSeparator()) --available_length; // Plenty of room. if (static_cast(base_name->length()) <= available_length) return true; // Limited room. Truncate |base_name| to fit. if (available_length > 0) { *base_name = base_name->substr(0, available_length); return true; } // Not enough room to even use a shortened |base_name|. base_name->clear(); return false; } // Generate name for saving resource. bool SavePackage::GenerateFileName(const std::string& disposition, const GURL& url, bool need_html_ext, base::FilePath::StringType* generated_name) { // TODO(jungshik): Figure out the referrer charset when having one // makes sense and pass it to GenerateFileName. base::FilePath file_path = net::GenerateFileName(url, disposition, std::string(), std::string(), std::string(), kDefaultSaveName); DCHECK(!file_path.empty()); if (need_html_ext) file_path = file_path.ReplaceExtension(kDefaultHtmlExtension); DownloadManagerDelegate* delegate = download_manager_->GetDelegate(); if (delegate) delegate->SanitizeSavePackageResourceName(&file_path); DCHECK_EQ(file_path.value(), file_path.BaseName().value()) << "SanitizeSavePackageResourceName should only return a basename."; base::FilePath::StringType base_name = file_path.RemoveExtension().BaseName().value(); base::FilePath::StringType file_name_ext = file_path.Extension(); // Need to make sure the suggested file name is not too long. uint32_t max_path = GetMaxPathLengthForDirectory(saved_main_directory_path_); // Get safe pure file name. if (!TruncateBaseNameToFitPathConstraints( saved_main_directory_path_, file_name_ext, max_path, &base_name)) return false; base::FilePath::StringType file_name = base_name + file_name_ext; // Check whether we already have same name in a case insensitive manner. FileNameSet::const_iterator iter = file_name_set_.find(file_name); if (iter == file_name_set_.end()) { file_name_set_.insert(file_name); } else { // Found same name, increase the ordinal number for the file name. base_name = base::FilePath(*iter).RemoveExtension().BaseName().value(); base::FilePath::StringType base_file_name = StripOrdinalNumber(base_name); // We need to make sure the length of base file name plus maximum ordinal // number path will be less than or equal to kMaxFilePathLength. if (!TruncateBaseNameToFitPathConstraints( saved_main_directory_path_, file_name_ext, max_path - kMaxFileOrdinalNumberPartLength, &base_file_name)) return false; // Prepare the new ordinal number. uint32_t ordinal_number; FileNameCountMap::iterator it = file_name_count_map_.find(base_file_name); if (it == file_name_count_map_.end()) { // First base-name-conflict resolving, use 1 as initial ordinal number. file_name_count_map_[base_file_name] = 1; ordinal_number = 1; } else { // We have met same base-name conflict, use latest ordinal number. ordinal_number = it->second; } if (ordinal_number > (kMaxFileOrdinalNumber - 1)) { // Use a random file from temporary file. base::FilePath temp_file; base::CreateTemporaryFile(&temp_file); file_name = temp_file.RemoveExtension().BaseName().value(); // Get safe pure file name. if (!TruncateBaseNameToFitPathConstraints(saved_main_directory_path_, base::FilePath::StringType(), max_path, &file_name)) return false; } else { for (int i = ordinal_number; i < kMaxFileOrdinalNumber; ++i) { base::FilePath::StringType new_name = base_file_name + base::StringPrintf(FILE_PATH_LITERAL("(%d)"), i) + file_name_ext; if (file_name_set_.find(new_name) == file_name_set_.end()) { // Resolved name conflict. file_name = new_name; file_name_count_map_[base_file_name] = ++i; break; } } } file_name_set_.insert(file_name); } DCHECK(!file_name.empty()); generated_name->assign(file_name); return true; } // We have received a message from SaveFileManager about a new saving job. We // find a SaveItem and store it in our in_progress list. void SavePackage::StartSave(const SaveFileCreateInfo* info) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK(info); auto it = in_progress_items_.find(info->save_item_id); if (it == in_progress_items_.end()) { // If not found, we must have cancel action. DCHECK(canceled()); return; } SaveItem* save_item = it->second.get(); DCHECK(!saved_main_file_path_.empty()); save_item->SetTotalBytes(info->total_bytes); // Determine the proper path for a saving job, by choosing either the default // save directory, or prompting the user. DCHECK(!save_item->has_final_name()); if (info->url != page_url_) { base::FilePath::StringType generated_name; // For HTML resource file, make sure it will have .htm as extension name, // otherwise, when you open the saved page in Chrome again, download // file manager will treat it as downloadable resource, and download it // instead of opening it as HTML. bool need_html_ext = info->save_source == SaveFileCreateInfo::SAVE_FILE_FROM_DOM; if (!GenerateFileName(info->content_disposition, GURL(info->url), need_html_ext, &generated_name)) { // We can not generate file name for this SaveItem, so we cancel the // saving page job if the save source is from serialized DOM data. // Otherwise, it means this SaveItem is sub-resource type, we treat it // as an error happened on saving. We can ignore this type error for // sub-resource links which will be resolved as absolute links instead // of local links in final saved contents. if (info->save_source == SaveFileCreateInfo::SAVE_FILE_FROM_DOM) Cancel(true); else SaveFinished(save_item->id(), 0, false); return; } // When saving page as only-HTML, we only have a SaveItem whose url // must be page_url_. DCHECK_EQ(SAVE_PAGE_TYPE_AS_COMPLETE_HTML, save_type_); DCHECK(!saved_main_directory_path_.empty()); // Now we get final name retrieved from GenerateFileName, we will use it // rename the SaveItem. base::FilePath final_name = saved_main_directory_path_.Append(generated_name); save_item->SetTargetPath(final_name); } else { // It is the main HTML file, use the name chosen by the user. save_item->SetTargetPath(saved_main_file_path_); } // Check whether we begin to require serialized HTML data. if (save_type_ == SAVE_PAGE_TYPE_AS_COMPLETE_HTML && wait_state_ == HTML_DATA) { // Inform backend to serialize the all frames' DOM and send serialized // HTML data back. GetSerializedHtmlWithLocalLinks(); } } SaveItem* SavePackage::LookupInProgressSaveItem(SaveItemId save_item_id) { DCHECK_CURRENTLY_ON(BrowserThread::UI); auto it = in_progress_items_.find(save_item_id); if (it != in_progress_items_.end()) { SaveItem* save_item = it->second.get(); DCHECK_EQ(SaveItem::IN_PROGRESS, save_item->state()); return save_item; } return nullptr; } void SavePackage::PutInProgressItemToSavedMap(SaveItem* save_item) { DCHECK_CURRENTLY_ON(BrowserThread::UI); auto it = in_progress_items_.find(save_item->id()); DCHECK(it != in_progress_items_.end()); DCHECK_EQ(save_item, it->second.get()); std::unique_ptr owned_item = std::move(it->second); in_progress_items_.erase(it); SaveItemIdMap& map = save_item->success() ? saved_success_items_ : saved_failed_items_; DCHECK(!base::ContainsKey(map, save_item->id())); map[save_item->id()] = std::move(owned_item); } // Called for updating saving state. bool SavePackage::UpdateSaveProgress(SaveItemId save_item_id, int64_t size, bool write_success) { DCHECK_CURRENTLY_ON(BrowserThread::UI); // Because we might have canceled this saving job before, // so we might not find corresponding SaveItem. SaveItem* save_item = LookupInProgressSaveItem(save_item_id); if (!save_item) return false; save_item->Update(size); // If we got disk error, cancel whole save page job. if (!write_success) { // Cancel job with reason of disk error. Cancel(false); } return true; } // Stop all page saving jobs that are in progress and instruct the FILE thread // to delete all saved files. void SavePackage::Stop() { DCHECK_CURRENTLY_ON(BrowserThread::UI); // If we haven't moved out of the initial state, there's nothing to cancel and // there won't be valid pointers for |file_manager_| or |download_|. if (wait_state_ == INITIALIZE) return; // When stopping, if it still has some items in in_progress, cancel them. DCHECK(canceled()); if (in_process_count()) { for (const auto& it : in_progress_items_) { SaveItem* save_item = it.second.get(); DCHECK_EQ(SaveItem::IN_PROGRESS, save_item->state()); save_item->Cancel(); } // Remove all in progress item to saved map. For failed items, they will // be put into saved_failed_items_, for successful item, they will be put // into saved_success_items_. while (in_process_count()) PutInProgressItemToSavedMap(in_progress_items_.begin()->second.get()); } // This vector contains the save ids of the save files which SaveFileManager // needs to remove from its save_file_map_. std::vector save_item_ids; for (const auto& it : saved_success_items_) save_item_ids.push_back(it.first); for (const auto& it : saved_failed_items_) save_item_ids.push_back(it.first); BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, base::Bind(&SaveFileManager::RemoveSavedFileFromFileMap, file_manager_, save_item_ids)); finished_ = true; wait_state_ = FAILED; // Inform the DownloadItem we have canceled whole save page job. if (download_) { download_->Cancel(false); FinalizeDownloadEntry(); } } void SavePackage::CheckFinish() { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (in_process_count() || finished_) return; base::FilePath dir = (save_type_ == SAVE_PAGE_TYPE_AS_COMPLETE_HTML && saved_success_items_.size() > 1) ? saved_main_directory_path_ : base::FilePath(); FinalNamesMap final_names; for (const auto& it : saved_success_items_) final_names.insert(std::make_pair(it.first, it.second->full_path())); BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, base::Bind(&SaveFileManager::RenameAllFiles, file_manager_, final_names, dir, web_contents()->GetRenderProcessHost()->GetID(), web_contents()->GetMainFrame()->GetRoutingID(), id())); } // Successfully finished all items of this SavePackage. void SavePackage::Finish() { DCHECK_CURRENTLY_ON(BrowserThread::UI); // User may cancel the job when we're moving files to the final directory. if (canceled()) return; wait_state_ = SUCCESSFUL; finished_ = true; // Record finish. RecordSavePackageEvent(SAVE_PACKAGE_FINISHED); // Record any errors that occurred. if (wrote_to_completed_file_) RecordSavePackageEvent(SAVE_PACKAGE_WRITE_TO_COMPLETED); if (wrote_to_failed_file_) RecordSavePackageEvent(SAVE_PACKAGE_WRITE_TO_FAILED); // This vector contains the save ids of the save files which SaveFileManager // needs to remove from its |save_file_map_|. std::vector list_of_failed_save_item_ids; for (const auto& it : saved_failed_items_) { const SaveItem* save_item = it.second.get(); DCHECK_EQ(it.first, save_item->id()); list_of_failed_save_item_ids.push_back(save_item->id()); } BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, base::Bind(&SaveFileManager::RemoveSavedFileFromFileMap, file_manager_, list_of_failed_save_item_ids)); if (download_) { // Hack to avoid touching |download_| after user cancel. // TODO(rdsmith/benjhayden): Integrate canceling on DownloadItem // with SavePackage flow. if (download_->GetState() == DownloadItem::IN_PROGRESS) { if (save_type_ != SAVE_PAGE_TYPE_AS_MHTML) { download_->DestinationUpdate(all_save_items_count_, CurrentSpeed()); download_->OnAllDataSaved(all_save_items_count_, std::unique_ptr()); } download_->MarkAsComplete(); } FinalizeDownloadEntry(); } } void SavePackage::SaveFinished(SaveItemId save_item_id, int64_t size, bool is_success) { DCHECK_CURRENTLY_ON(BrowserThread::UI); // Because we might have canceled this saving job before, // so we might not find corresponding SaveItem. Just ignore it. SaveItem* save_item = LookupInProgressSaveItem(save_item_id); if (!save_item) return; // Let SaveItem set end state. save_item->Finish(size, is_success); // Remove the associated save id and SavePackage. file_manager_->RemoveSaveFile(save_item->id(), this); PutInProgressItemToSavedMap(save_item); // Inform the DownloadItem to update UI. // We use the received bytes as number of saved files. // Hack to avoid touching download_ after user cancel. // TODO(rdsmith/benjhayden): Integrate canceling on DownloadItem // with SavePackage flow. if (download_ && (download_->GetState() == DownloadItem::IN_PROGRESS)) { download_->DestinationUpdate(completed_count(), CurrentSpeed()); } if (save_item->save_source() == SaveFileCreateInfo::SAVE_FILE_FROM_DOM && save_item->url() == page_url_ && !save_item->received_bytes()) { // If size of main HTML page is 0, treat it as disk error. Cancel(false); return; } if (canceled()) { DCHECK(finished_); return; } // Continue processing the save page job. DoSavingProcess(); // Check whether we can successfully finish whole job. CheckFinish(); } void SavePackage::SaveCanceled(const SaveItem* save_item) { DCHECK_CURRENTLY_ON(BrowserThread::UI); file_manager_->RemoveSaveFile(save_item->id(), this); BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, base::Bind(&SaveFileManager::CancelSave, file_manager_, save_item->id())); } void SavePackage::SaveNextFile(bool process_all_remaining_items) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK(web_contents()); DCHECK(!waiting_item_queue_.empty()); do { // Pop SaveItem from waiting list. std::unique_ptr save_item = std::move(waiting_item_queue_.front()); SaveItem* save_item_ptr = save_item.get(); waiting_item_queue_.pop_front(); // Add the item to |in_progress_items_|. DCHECK(!base::ContainsKey(in_progress_items_, save_item->id())); in_progress_items_[save_item_ptr->id()] = std::move(save_item); save_item_ptr->Start(); // Find the frame responsible for making the network request below - it will // be used in security checks made later by ResourceDispatcherHostImpl. int requester_frame_tree_node_id = save_item_ptr->save_source() == SaveFileCreateInfo::SAVE_FILE_FROM_NET ? save_item_ptr->container_frame_tree_node_id() : save_item_ptr->frame_tree_node_id(); DCHECK_NE(FrameTreeNode::kFrameTreeNodeInvalidId, requester_frame_tree_node_id); FrameTreeNode* requester_frame_tree_node = FrameTreeNode::GloballyFindByID(requester_frame_tree_node_id); if (!requester_frame_tree_node) { save_item_ptr->Finish(0, /* is_success = */ false); continue; } RenderFrameHostImpl* requester_frame = requester_frame_tree_node->current_frame_host(); file_manager_->SaveURL( save_item_ptr->id(), save_item_ptr->url(), save_item_ptr->referrer(), requester_frame->GetProcess()->GetID(), requester_frame->render_view_host()->GetRoutingID(), requester_frame->routing_id(), save_item_ptr->save_source(), save_item_ptr->full_path(), web_contents()->GetBrowserContext()->GetResourceContext(), this); } while (process_all_remaining_items && !waiting_item_queue_.empty()); } int SavePackage::PercentComplete() { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (!all_save_items_count_) return 0; if (!in_process_count()) return 100; return completed_count() / all_save_items_count_; } int64_t SavePackage::CurrentSpeed() const { DCHECK_CURRENTLY_ON(BrowserThread::UI); base::TimeDelta diff = base::TimeTicks::Now() - start_tick_; int64_t diff_ms = diff.InMilliseconds(); return diff_ms == 0 ? 0 : completed_count() * 1000 / diff_ms; } void SavePackage::DoSavingProcess() { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (save_type_ == SAVE_PAGE_TYPE_AS_COMPLETE_HTML) { // We guarantee that images and JavaScripts must be downloaded first. // So when finishing all those sub-resources, we will know which // sub-resource's link can be replaced with local file path, which // sub-resource's link need to be replaced with absolute URL which // point to its internet address because it got error when saving its data. // Start a new SaveItem job if we still have job in waiting queue. if (waiting_item_queue_.size()) { DCHECK_EQ(NET_FILES, wait_state_); const SaveItem* save_item = waiting_item_queue_.front().get(); if (save_item->save_source() != SaveFileCreateInfo::SAVE_FILE_FROM_DOM) { SaveNextFile(false); } else if (!in_process_count()) { // If there is no in-process SaveItem, it means all sub-resources // have been processed. Now we need to start serializing HTML DOM // for the current page to get the generated HTML data. wait_state_ = HTML_DATA; // All non-HTML resources have been finished, start all remaining // HTML files. SaveNextFile(true); } } else if (in_process_count()) { // Continue asking for HTML data. DCHECK_EQ(HTML_DATA, wait_state_); } } else { // Save as HTML only or MHTML. DCHECK_EQ(NET_FILES, wait_state_); DCHECK((save_type_ == SAVE_PAGE_TYPE_AS_ONLY_HTML) || (save_type_ == SAVE_PAGE_TYPE_AS_MHTML)) << save_type_; if (waiting_item_queue_.size()) { DCHECK_EQ(all_save_items_count_, waiting_item_queue_.size()); SaveNextFile(false); } } } bool SavePackage::OnMessageReceived(const IPC::Message& message, RenderFrameHost* render_frame_host) { bool handled = true; auto* rfhi = static_cast(render_frame_host); IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(SavePackage, message, rfhi) IPC_MESSAGE_HANDLER(FrameHostMsg_SavableResourceLinksResponse, OnSavableResourceLinksResponse) IPC_MESSAGE_HANDLER(FrameHostMsg_SavableResourceLinksError, OnSavableResourceLinksError) IPC_MESSAGE_HANDLER(FrameHostMsg_SerializedHtmlWithLocalLinksResponse, OnSerializedHtmlWithLocalLinksResponse) IPC_MESSAGE_UNHANDLED(handled = false) IPC_END_MESSAGE_MAP() return handled; } // After finishing all SaveItems which need to get data from net. // We collect all URLs which have local storage and send the // map:(originalURL:currentLocalPath) to render process (backend). // Then render process will serialize DOM and send data to us. void SavePackage::GetSerializedHtmlWithLocalLinks() { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (wait_state_ != HTML_DATA) return; // First collect the status of all the resource files and check whether they // have created local files (although they have not been completely saved). int successful_started_items_count = 0; for (const auto& item : in_progress_items_) { DCHECK_EQ(SaveFileCreateInfo::SAVE_FILE_FROM_DOM, item.second->save_source()); if (item.second->has_final_name()) successful_started_items_count++; } // If not all file of HTML resource have been started, then wait. if (successful_started_items_count != in_process_count()) return; // Try to serialize all the frames gathered during GetSavableResourceLinks. DCHECK_EQ(0, number_of_frames_pending_response_); FrameTree* frame_tree = static_cast(web_contents()->GetMainFrame()) ->frame_tree_node()->frame_tree(); for (const auto& item : frame_tree_node_id_to_save_item_) { int frame_tree_node_id = item.first; const SaveItem* save_item = item.second; FrameTreeNode* frame_tree_node = frame_tree->FindByID(frame_tree_node_id); if (frame_tree_node && frame_tree_node->current_frame_host()->IsRenderFrameLive()) { // Ask the frame for HTML to be written to the associated SaveItem. GetSerializedHtmlWithLocalLinksForFrame(frame_tree_node); number_of_frames_pending_response_++; } else { // Notify SaveFileManager about the failure to save this SaveItem. BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, base::Bind(&SaveFileManager::SaveFinished, file_manager_, save_item->id(), id(), false)); } } if (number_of_frames_pending_response_ == 0) { // All frames disappeared since gathering of savable resources? // Treat this as cancellation. Cancel(false); } } void SavePackage::GetSerializedHtmlWithLocalLinksForFrame( FrameTreeNode* target_tree_node) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK(target_tree_node); int target_frame_tree_node_id = target_tree_node->frame_tree_node_id(); RenderFrameHostImpl* target = target_tree_node->current_frame_host(); // Collect all saved success items. // SECURITY NOTE: We don't send *all* urls / local paths, but only // those that the given frame had access to already (because it contained // the savable resources / subframes associated with save items). std::map url_to_local_path; std::map routing_id_to_local_path; auto it = frame_tree_node_id_to_contained_save_items_.find( target_frame_tree_node_id); if (it != frame_tree_node_id_to_contained_save_items_.end()) { for (const SaveItem* save_item : it->second) { // Skip items that failed to save. if (!save_item->has_final_name()) { DCHECK_EQ(SaveItem::SaveState::COMPLETE, save_item->state()); DCHECK(!save_item->success()); continue; } // Calculate the relative path for referring to the |save_item|. base::FilePath local_path(base::FilePath::kCurrentDirectory); if (target_tree_node->IsMainFrame()) { local_path = local_path.Append(saved_main_directory_path_.BaseName()); } local_path = local_path.Append(save_item->full_path().BaseName()); // Insert the link into |url_to_local_path| or |routing_id_to_local_path|. if (save_item->save_source() != SaveFileCreateInfo::SAVE_FILE_FROM_DOM) { DCHECK_EQ(FrameTreeNode::kFrameTreeNodeInvalidId, save_item->frame_tree_node_id()); url_to_local_path[save_item->url()] = local_path; } else { FrameTreeNode* save_item_frame_tree_node = target_tree_node->frame_tree()->FindByID( save_item->frame_tree_node_id()); if (!save_item_frame_tree_node) { // crbug.com/541354: Raciness when saving a dynamically changing page. continue; } int routing_id = save_item_frame_tree_node->render_manager() ->GetRoutingIdForSiteInstance(target->GetSiteInstance()); DCHECK_NE(MSG_ROUTING_NONE, routing_id); routing_id_to_local_path[routing_id] = local_path; } } } // Ask target frame to serialize itself. target->Send(new FrameMsg_GetSerializedHtmlWithLocalLinks( target->GetRoutingID(), url_to_local_path, routing_id_to_local_path)); } // Process the serialized HTML content data of a specified frame // retrieved from the renderer process. void SavePackage::OnSerializedHtmlWithLocalLinksResponse( RenderFrameHostImpl* sender, const std::string& data, bool end_of_data) { DCHECK_CURRENTLY_ON(BrowserThread::UI); // Check current state. if (wait_state_ != HTML_DATA) return; int frame_tree_node_id = sender->frame_tree_node()->frame_tree_node_id(); auto it = frame_tree_node_id_to_save_item_.find(frame_tree_node_id); if (it == frame_tree_node_id_to_save_item_.end()) { // This is parimarily sanitization of IPC (renderer shouldn't send // OnSerializedHtmlFragment IPC without being asked to), but it might also // occur in the wild (if old renderer response reaches a new SavePackage). return; } const SaveItem* save_item = it->second; DCHECK_EQ(SaveFileCreateInfo::SAVE_FILE_FROM_DOM, save_item->save_source()); if (save_item->state() != SaveItem::IN_PROGRESS) { for (const auto& saved_it : saved_success_items_) { if (saved_it.second->url() == save_item->url()) { wrote_to_completed_file_ = true; break; } } if (base::ContainsKey(saved_failed_items_, save_item->id())) wrote_to_failed_file_ = true; return; } if (!data.empty()) { // Prepare buffer for saving HTML data. scoped_refptr new_data(new net::IOBuffer(data.size())); memcpy(new_data->data(), data.data(), data.size()); // Call write file functionality in FILE thread. BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, base::Bind(&SaveFileManager::UpdateSaveProgress, file_manager_, save_item->id(), base::RetainedRef(new_data), static_cast(data.size()))); } // Current frame is completed saving, call finish in FILE thread. if (end_of_data) { DVLOG(20) << __func__ << "() save_item_id = " << save_item->id() << " url = \"" << save_item->url().spec() << "\""; BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, base::Bind(&SaveFileManager::SaveFinished, file_manager_, save_item->id(), id(), true)); number_of_frames_pending_response_--; DCHECK_LE(0, number_of_frames_pending_response_); } } // Ask for all savable resource links from backend, include main frame and // sub-frame. void SavePackage::GetSavableResourceLinks() { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (wait_state_ != START_PROCESS) return; wait_state_ = RESOURCES_LIST; DCHECK_EQ(0, number_of_frames_pending_response_); number_of_frames_pending_response_ = web_contents()->SendToAllFrames( new FrameMsg_GetSavableResourceLinks(MSG_ROUTING_NONE)); DCHECK_LT(0, number_of_frames_pending_response_); // Enqueue the main frame separately (because this frame won't show up in any // of OnSavableResourceLinksResponse callbacks). FrameTreeNode* main_frame_tree_node = static_cast(web_contents()->GetMainFrame()) ->frame_tree_node(); EnqueueFrame(FrameTreeNode::kFrameTreeNodeInvalidId, // No container. main_frame_tree_node->frame_tree_node_id(), main_frame_tree_node->current_url()); } void SavePackage::OnSavableResourceLinksResponse( RenderFrameHostImpl* sender, const std::vector& resources_list, const Referrer& referrer, const std::vector& subframes) { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (wait_state_ != RESOURCES_LIST) return; // Add all sub-resources to wait list. int container_frame_tree_node_id = sender->frame_tree_node()->frame_tree_node_id(); for (const GURL& u : resources_list) { EnqueueSavableResource(container_frame_tree_node_id, u, referrer); } for (const SavableSubframe& subframe : subframes) { FrameTreeNode* subframe_tree_node = sender->frame_tree_node()->frame_tree()->FindByRoutingID( sender->GetProcess()->GetID(), subframe.routing_id); if (!subframe_tree_node) { // crbug.com/541354 - Raciness when saving a dynamically changing page. continue; } if (subframe_tree_node->parent() != sender->frame_tree_node()) { // Only reachable if the renderer has a bug or has been compromised. ReceivedBadMessage( sender->GetProcess(), bad_message::DWNLD_INVALID_SAVABLE_RESOURCE_LINKS_RESPONSE); continue; } EnqueueFrame(container_frame_tree_node_id, subframe_tree_node->frame_tree_node_id(), subframe.original_url); } CompleteSavableResourceLinksResponse(); } SaveItem* SavePackage::CreatePendingSaveItem( int container_frame_tree_node_id, int save_item_frame_tree_node_id, const GURL& url, const Referrer& referrer, SaveFileCreateInfo::SaveFileSource save_source) { DCHECK_CURRENTLY_ON(BrowserThread::UI); Referrer sanitized_referrer = Referrer::SanitizeForRequest(url, referrer); SaveItem* save_item = new SaveItem(url, sanitized_referrer, this, save_source, save_item_frame_tree_node_id, container_frame_tree_node_id); waiting_item_queue_.push_back(base::WrapUnique(save_item)); frame_tree_node_id_to_contained_save_items_[container_frame_tree_node_id] .push_back(save_item); return save_item; } SaveItem* SavePackage::CreatePendingSaveItemDeduplicatingByUrl( int container_frame_tree_node_id, int save_item_frame_tree_node_id, const GURL& url, const Referrer& referrer, SaveFileCreateInfo::SaveFileSource save_source) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK(url.is_valid()); // |url| should be validated by the callers. // Frames should not be deduplicated by URL. DCHECK_NE(SaveFileCreateInfo::SAVE_FILE_FROM_DOM, save_source); SaveItem* save_item; auto it = url_to_save_item_.find(url); if (it != url_to_save_item_.end()) { save_item = it->second; frame_tree_node_id_to_contained_save_items_[container_frame_tree_node_id] .push_back(save_item); } else { save_item = CreatePendingSaveItem(container_frame_tree_node_id, save_item_frame_tree_node_id, url, referrer, save_source); url_to_save_item_[url] = save_item; } return save_item; } void SavePackage::EnqueueSavableResource(int container_frame_tree_node_id, const GURL& url, const Referrer& referrer) { DCHECK_CURRENTLY_ON(BrowserThread::UI); if (!url.is_valid()) return; CreatePendingSaveItemDeduplicatingByUrl( container_frame_tree_node_id, FrameTreeNode::kFrameTreeNodeInvalidId, url, referrer, SaveFileCreateInfo::SAVE_FILE_FROM_NET); } void SavePackage::EnqueueFrame(int container_frame_tree_node_id, int frame_tree_node_id, const GURL& frame_original_url) { DCHECK_CURRENTLY_ON(BrowserThread::UI); SaveItem* save_item = CreatePendingSaveItem( container_frame_tree_node_id, frame_tree_node_id, frame_original_url, Referrer(), SaveFileCreateInfo::SAVE_FILE_FROM_DOM); DCHECK(save_item); frame_tree_node_id_to_save_item_[frame_tree_node_id] = save_item; } void SavePackage::OnSavableResourceLinksError(RenderFrameHostImpl* sender) { DCHECK_CURRENTLY_ON(BrowserThread::UI); CompleteSavableResourceLinksResponse(); } void SavePackage::CompleteSavableResourceLinksResponse() { DCHECK_CURRENTLY_ON(BrowserThread::UI); --number_of_frames_pending_response_; DCHECK_LE(0, number_of_frames_pending_response_); if (number_of_frames_pending_response_ != 0) return; // Need to wait for more responses from RenderFrames. // Sort |waiting_item_queue_| so that frames go last (frames are identified by // SAVE_FILE_FROM_DOM in the comparison function below). std::stable_sort( waiting_item_queue_.begin(), waiting_item_queue_.end(), [](const std::unique_ptr& x, const std::unique_ptr& y) { DCHECK(x); DCHECK(y); return (x->save_source() != SaveFileCreateInfo::SAVE_FILE_FROM_DOM) && (y->save_source() == SaveFileCreateInfo::SAVE_FILE_FROM_DOM); }); all_save_items_count_ = static_cast(waiting_item_queue_.size()); // We use total bytes as the total number of files we want to save. // Hack to avoid touching download_ after user cancel. // TODO(rdsmith/benjhayden): Integrate canceling on DownloadItem // with SavePackage flow. if (download_ && (download_->GetState() == DownloadItem::IN_PROGRESS)) download_->SetTotalBytes(all_save_items_count_); if (all_save_items_count_) { wait_state_ = NET_FILES; // Give backend the lists which contain all resource links that have local // storage, after which, render process will serialize DOM for generating // HTML data. DoSavingProcess(); } else { // No savable frames and/or resources - treat it as user cancel. Cancel(true); } } // static base::FilePath SavePackage::GetSuggestedNameForSaveAs( const base::string16& title, const GURL& page_url, bool can_save_as_complete, const std::string& contents_mime_type) { base::FilePath name_with_proper_ext = base::FilePath::FromUTF16Unsafe(title); // If the page's title matches its URL, use the URL. Try to use the last path // component or if there is none, the domain as the file name. // Normally we want to base the filename on the page title, or if it doesn't // exist, on the URL. It's not easy to tell if the page has no title, because // if the page has no title, WebContents::GetTitle() will return the page's // URL (adjusted for display purposes). Therefore, we convert the "title" // back to a URL, and if it matches the original page URL, we know the page // had no title (or had a title equal to its URL, which is fine to treat // similarly). if (title == url_formatter::FormatUrl(page_url)) { std::string url_path; if (!page_url.SchemeIs(url::kDataScheme)) { std::vector url_parts = base::SplitString( page_url.path(), "/", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); if (!url_parts.empty()) { for (int i = static_cast(url_parts.size()) - 1; i >= 0; --i) { url_path = url_parts[i]; if (!url_path.empty()) break; } } if (url_path.empty()) url_path = page_url.host(); } else { url_path = "dataurl"; } name_with_proper_ext = base::FilePath::FromUTF8Unsafe(url_path); } // Ask user for getting final saving name. name_with_proper_ext = EnsureMimeExtension(name_with_proper_ext, contents_mime_type); // Adjust extension for complete types. if (can_save_as_complete) name_with_proper_ext = EnsureHtmlExtension(name_with_proper_ext); base::FilePath::StringType file_name = name_with_proper_ext.value(); base::i18n::ReplaceIllegalCharactersInPath(&file_name, '_'); return base::FilePath(file_name); } // static base::FilePath SavePackage::EnsureHtmlExtension(const base::FilePath& name) { DCHECK_CURRENTLY_ON(BrowserThread::FILE); base::FilePath::StringType ext = name.Extension(); if (!ext.empty()) ext.erase(ext.begin()); // Erase preceding '.'. std::string mime_type; if (!net::GetMimeTypeFromExtension(ext, &mime_type) || !CanSaveAsComplete(mime_type)) { return base::FilePath(name.value() + FILE_PATH_LITERAL(".") + kDefaultHtmlExtension); } return name; } // static base::FilePath SavePackage::EnsureMimeExtension(const base::FilePath& name, const std::string& contents_mime_type) { DCHECK_CURRENTLY_ON(BrowserThread::FILE); // Start extension at 1 to skip over period if non-empty. base::FilePath::StringType ext = name.Extension(); if (!ext.empty()) ext = ext.substr(1); base::FilePath::StringType suggested_extension = ExtensionForMimeType(contents_mime_type); std::string mime_type; if (!suggested_extension.empty() && !net::GetMimeTypeFromExtension(ext, &mime_type)) { // Extension is absent or needs to be updated. return base::FilePath(name.value() + FILE_PATH_LITERAL(".") + suggested_extension); } return name; } // static const base::FilePath::CharType* SavePackage::ExtensionForMimeType( const std::string& contents_mime_type) { static const struct { const char* mime_type; const base::FilePath::CharType* suggested_extension; } extensions[] = { { "text/html", kDefaultHtmlExtension }, { "text/xml", FILE_PATH_LITERAL("xml") }, { "application/xhtml+xml", FILE_PATH_LITERAL("xhtml") }, { "text/plain", FILE_PATH_LITERAL("txt") }, { "text/css", FILE_PATH_LITERAL("css") }, }; for (const auto& extension : extensions) { if (contents_mime_type == extension.mime_type) return extension.suggested_extension; } return FILE_PATH_LITERAL(""); } void SavePackage::GetSaveInfo() { DCHECK_CURRENTLY_ON(BrowserThread::UI); // Can't use |web_contents_| in the FILE thread, so get the data that we need // before calling to it. base::FilePath website_save_dir; base::FilePath download_save_dir; bool skip_dir_check = false; auto* delegate = download_manager_->GetDelegate(); if (delegate) { delegate->GetSaveDir( web_contents()->GetBrowserContext(), &website_save_dir, &download_save_dir, &skip_dir_check); } std::string mime_type = web_contents()->GetContentsMimeType(); bool can_save_as_complete = CanSaveAsComplete(mime_type); BrowserThread::PostTaskAndReplyWithResult( BrowserThread::FILE, FROM_HERE, base::Bind(&SavePackage::CreateDirectoryOnFileThread, title_, page_url_, can_save_as_complete, mime_type, website_save_dir, download_save_dir, skip_dir_check), base::Bind(&SavePackage::ContinueGetSaveInfo, this, can_save_as_complete)); } // static base::FilePath SavePackage::CreateDirectoryOnFileThread( const base::string16& title, const GURL& page_url, bool can_save_as_complete, const std::string& mime_type, const base::FilePath& website_save_dir, const base::FilePath& download_save_dir, bool skip_dir_check) { DCHECK_CURRENTLY_ON(BrowserThread::FILE); base::FilePath suggested_filename = GetSuggestedNameForSaveAs( title, page_url, can_save_as_complete, mime_type); base::FilePath save_dir; // If the default html/websites save folder doesn't exist... // We skip the directory check for gdata directories on ChromeOS. if (!skip_dir_check && !base::DirectoryExists(website_save_dir)) { // If the default download dir doesn't exist, create it. if (!base::DirectoryExists(download_save_dir)) { bool res = base::CreateDirectory(download_save_dir); DCHECK(res); } save_dir = download_save_dir; } else { // If it does exist, use the default save dir param. save_dir = website_save_dir; } base::FilePath::StringType base_name = suggested_filename.RemoveExtension().BaseName().value(); base::FilePath::StringType file_name_ext = suggested_filename.Extension(); // Need to make sure the suggested file name is not too long. uint32_t max_path = GetMaxPathLengthForDirectory(save_dir); if (TruncateBaseNameToFitPathConstraints(save_dir, file_name_ext, max_path, &base_name)) { return save_dir.Append(base_name + file_name_ext); } // Cannot create a shorter filename. This will cause the save as operation // to fail unless the user pick a shorter name. Continuing even though it // will fail because returning means no save as popup for the user, which // is even more confusing. This case should be rare though. return save_dir.Append(suggested_filename); } void SavePackage::ContinueGetSaveInfo(bool can_save_as_complete, const base::FilePath& suggested_path) { DCHECK_CURRENTLY_ON(BrowserThread::UI); // The WebContents which owns this SavePackage may have disappeared during // the UI->FILE->UI thread hop of // GetSaveInfo->CreateDirectoryOnFileThread->ContinueGetSaveInfo. if (!web_contents() || !download_manager_->GetDelegate()) return; base::FilePath::StringType default_extension; if (can_save_as_complete) default_extension = kDefaultHtmlExtension; download_manager_->GetDelegate()->ChooseSavePath( web_contents(), suggested_path, default_extension, can_save_as_complete, base::Bind(&SavePackage::OnPathPicked, AsWeakPtr())); } void SavePackage::OnPathPicked( const base::FilePath& final_name, SavePageType type, const SavePackageDownloadCreatedCallback& download_created_callback) { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK((type == SAVE_PAGE_TYPE_AS_ONLY_HTML) || (type == SAVE_PAGE_TYPE_AS_MHTML) || (type == SAVE_PAGE_TYPE_AS_COMPLETE_HTML)) << type; // Ensure the filename is safe. saved_main_file_path_ = final_name; // TODO(asanka): This call may block on IO and shouldn't be made // from the UI thread. See http://crbug.com/61827. net::GenerateSafeFileName(web_contents()->GetContentsMimeType(), false, &saved_main_file_path_); saved_main_directory_path_ = saved_main_file_path_.DirName(); save_type_ = type; if (save_type_ == SAVE_PAGE_TYPE_AS_COMPLETE_HTML) { // Make new directory for saving complete file. saved_main_directory_path_ = saved_main_directory_path_.Append( saved_main_file_path_.RemoveExtension().BaseName().value() + FILE_PATH_LITERAL("_files")); } Init(download_created_callback); } void SavePackage::RemoveObservers() { DCHECK_CURRENTLY_ON(BrowserThread::UI); DCHECK(download_); DCHECK(download_manager_); download_->RemoveObserver(this); download_ = nullptr; download_manager_ = nullptr; } void SavePackage::OnDownloadDestroyed(DownloadItem* download) { RemoveObservers(); } void SavePackage::FinalizeDownloadEntry() { DCHECK(download_); download_manager_->OnSavePackageSuccessfullyFinished(download_); RemoveObservers(); } } // namespace content