// Copyright (c) 2010 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/browser/download/download_manager.h" #include "app/l10n_util.h" #include "app/resource_bundle.h" #include "base/callback.h" #include "base/file_util.h" #include "base/logging.h" #include "base/path_service.h" #include "base/rand_util.h" #include "base/stl_util-inl.h" #include "base/stringprintf.h" #include "base/sys_string_conversions.h" #include "base/task.h" #include "base/utf_string_conversions.h" #include "build/build_config.h" #include "chrome/browser/browser_list.h" #include "chrome/browser/browser_process.h" #include "chrome/browser/browser_thread.h" #include "chrome/browser/download/download_file_manager.h" #include "chrome/browser/download/download_history.h" #include "chrome/browser/download/download_item.h" #include "chrome/browser/download/download_prefs.h" #include "chrome/browser/download/download_status_updater.h" #include "chrome/browser/download/download_util.h" #include "chrome/browser/extensions/extensions_service.h" #include "chrome/browser/history/download_create_info.h" #include "chrome/browser/net/chrome_url_request_context.h" #include "chrome/browser/platform_util.h" #include "chrome/browser/profile.h" #include "chrome/browser/renderer_host/render_process_host.h" #include "chrome/browser/renderer_host/render_view_host.h" #include "chrome/browser/tab_contents/infobar_delegate.h" #include "chrome/browser/tab_contents/tab_contents.h" #include "chrome/browser/tab_contents/tab_util.h" #include "chrome/browser/ui/browser.h" #include "chrome/common/chrome_paths.h" #include "chrome/common/notification_service.h" #include "chrome/common/notification_type.h" #include "chrome/common/pref_names.h" #include "googleurl/src/gurl.h" #include "grit/generated_resources.h" #include "grit/theme_resources.h" #include "net/base/mime_util.h" #include "net/base/net_util.h" #if defined(OS_WIN) #include "app/win_util.h" #endif DownloadManager::DownloadManager(DownloadStatusUpdater* status_updater) : shutdown_needed_(false), profile_(NULL), file_manager_(NULL), status_updater_(status_updater->AsWeakPtr()) { if (status_updater_) status_updater_->AddDelegate(this); } DownloadManager::~DownloadManager() { DCHECK(!shutdown_needed_); if (status_updater_) status_updater_->RemoveDelegate(this); } void DownloadManager::Shutdown() { if (!shutdown_needed_) return; shutdown_needed_ = false; FOR_EACH_OBSERVER(Observer, observers_, ManagerGoingDown()); if (file_manager_) { BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, NewRunnableMethod(file_manager_, &DownloadFileManager::OnDownloadManagerShutdown, this)); } // 'in_progress_' may contain DownloadItems that have not finished the start // complete (from the history service) and thus aren't in downloads_. DownloadMap::iterator it = in_progress_.begin(); std::set to_remove; for (; it != in_progress_.end(); ++it) { DownloadItem* download = it->second; if (download->safety_state() == DownloadItem::DANGEROUS) { // Forget about any download that the user did not approve. // Note that we cannot call download->Remove() this would invalidate our // iterator. to_remove.insert(download); continue; } DCHECK_EQ(DownloadItem::IN_PROGRESS, download->state()); download->Cancel(false); download_history_->UpdateEntry(download); if (download->db_handle() == DownloadHistory::kUninitializedHandle) { // An invalid handle means that 'download' does not yet exist in // 'downloads_', so we have to delete it here. delete download; } } // 'dangerous_finished_' contains all complete downloads that have not been // approved. They should be removed. it = dangerous_finished_.begin(); for (; it != dangerous_finished_.end(); ++it) to_remove.insert(it->second); // Remove the dangerous download that are not approved. for (std::set::const_iterator rm_it = to_remove.begin(); rm_it != to_remove.end(); ++rm_it) { DownloadItem* download = *rm_it; int64 handle = download->db_handle(); download->Remove(true); // Same as above, delete the download if it is not in 'downloads_' (as the // Remove() call above won't have deleted it). if (handle == DownloadHistory::kUninitializedHandle) delete download; } to_remove.clear(); in_progress_.clear(); dangerous_finished_.clear(); STLDeleteValues(&downloads_); STLDeleteContainerPointers(save_page_downloads_.begin(), save_page_downloads_.end()); file_manager_ = NULL; // Make sure the save as dialog doesn't notify us back if we're gone before // it returns. if (select_file_dialog_.get()) select_file_dialog_->ListenerDestroyed(); download_history_.reset(); request_context_getter_ = NULL; shutdown_needed_ = false; } void DownloadManager::GetTemporaryDownloads( const FilePath& dir_path, std::vector* result) { DCHECK(result); for (DownloadMap::iterator it = downloads_.begin(); it != downloads_.end(); ++it) { if (it->second->is_temporary() && it->second->full_path().DirName() == dir_path) result->push_back(it->second); } } void DownloadManager::GetAllDownloads( const FilePath& dir_path, std::vector* result) { DCHECK(result); for (DownloadMap::iterator it = downloads_.begin(); it != downloads_.end(); ++it) { if (!it->second->is_temporary() && (dir_path.empty() || it->second->full_path().DirName() == dir_path)) result->push_back(it->second); } } void DownloadManager::GetCurrentDownloads( const FilePath& dir_path, std::vector* result) { DCHECK(result); for (DownloadMap::iterator it = downloads_.begin(); it != downloads_.end(); ++it) { if (!it->second->is_temporary() && (it->second->state() == DownloadItem::IN_PROGRESS || it->second->safety_state() == DownloadItem::DANGEROUS) && (dir_path.empty() || it->second->full_path().DirName() == dir_path)) result->push_back(it->second); } // If we have a parent profile, let it add its downloads to the results. Profile* original_profile = profile_->GetOriginalProfile(); if (original_profile != profile_) original_profile->GetDownloadManager()->GetCurrentDownloads(dir_path, result); } void DownloadManager::SearchDownloads(const string16& query, std::vector* result) { DCHECK(result); string16 query_lower(l10n_util::ToLower(query)); for (DownloadMap::iterator it = downloads_.begin(); it != downloads_.end(); ++it) { DownloadItem* download_item = it->second; if (download_item->is_temporary() || download_item->is_extension_install()) continue; // Display Incognito downloads only in Incognito window, and vice versa. // The Incognito Downloads page will get the list of non-Incognito downloads // from its parent profile. if (profile_->IsOffTheRecord() != download_item->is_otr()) continue; if (download_item->MatchesQuery(query_lower)) result->push_back(download_item); } // If we have a parent profile, let it add its downloads to the results. Profile* original_profile = profile_->GetOriginalProfile(); if (original_profile != profile_) original_profile->GetDownloadManager()->SearchDownloads(query, result); } // Query the history service for information about all persisted downloads. bool DownloadManager::Init(Profile* profile) { DCHECK(profile); DCHECK(!shutdown_needed_) << "DownloadManager already initialized."; shutdown_needed_ = true; profile_ = profile; request_context_getter_ = profile_->GetRequestContext(); download_history_.reset(new DownloadHistory(profile)); download_history_->Load( NewCallback(this, &DownloadManager::OnQueryDownloadEntriesComplete)); download_prefs_.reset(new DownloadPrefs(profile_->GetPrefs())); // In test mode, there may be no ResourceDispatcherHost. In this case it's // safe to avoid setting |file_manager_| because we only call a small set of // functions, none of which need it. ResourceDispatcherHost* rdh = g_browser_process->resource_dispatcher_host(); if (rdh) { file_manager_ = rdh->download_file_manager(); DCHECK(file_manager_); } other_download_manager_observer_.reset( new OtherDownloadManagerObserver(this)); return true; } // We have received a message from DownloadFileManager about a new download. We // create a download item and store it in our download map, and inform the // history system of a new download. Since this method can be called while the // history service thread is still reading the persistent state, we do not // insert the new DownloadItem into 'downloads_' or inform our observers at this // point. OnCreateDatabaseEntryComplete() handles that finalization of the the // download creation as a callback from the history thread. void DownloadManager::StartDownload(DownloadCreateInfo* info) { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); DCHECK(info); // Check whether this download is for an extension install or not. // Allow extensions to be explicitly saved. if (!info->prompt_user_for_save_location) { if (UserScript::HasUserScriptFileExtension(info->url) || info->mime_type == Extension::kMimeType) info->is_extension_install = true; } if (info->save_info.file_path.empty()) { FilePath generated_name; download_util::GenerateFileNameFromInfo(info, &generated_name); // Freeze the user's preference for showing a Save As dialog. We're going // to bounce around a bunch of threads and we don't want to worry about race // conditions where the user changes this pref out from under us. if (download_prefs_->prompt_for_download()) { // But ignore the user's preference for the following scenarios: // 1) Extension installation. Note that we only care here about the case // where an extension is installed, not when one is downloaded with // "save as...". // 2) Filetypes marked "always open." If the user just wants this file // opened, don't bother asking where to keep it. if (!info->is_extension_install && !ShouldOpenFileBasedOnExtension(generated_name)) info->prompt_user_for_save_location = true; } // Determine the proper path for a download, by either one of the following: // 1) using the default download directory. // 2) prompting the user. if (info->prompt_user_for_save_location && !last_download_path_.empty()){ info->suggested_path = last_download_path_; } else { info->suggested_path = download_prefs_->download_path(); } info->suggested_path = info->suggested_path.Append(generated_name); } else { info->suggested_path = info->save_info.file_path; } if (!info->prompt_user_for_save_location && info->save_info.file_path.empty()) { info->is_dangerous = download_util::IsDangerous(info, profile()); } // We need to move over to the download thread because we don't want to stat // the suggested path on the UI thread. // We can only access preferences on the UI thread, so check the download path // now and pass the value to the FILE thread. BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, NewRunnableMethod( this, &DownloadManager::CheckIfSuggestedPathExists, info, download_prefs()->download_path())); } void DownloadManager::CheckIfSuggestedPathExists(DownloadCreateInfo* info, const FilePath& default_path) { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE)); DCHECK(info); // Make sure the default download directory exists. // TODO(phajdan.jr): only create the directory when we're sure the user // is going to save there and not to another directory of his choice. file_util::CreateDirectory(default_path); // Check writability of the suggested path. If we can't write to it, default // to the user's "My Documents" directory. We'll prompt them in this case. FilePath dir = info->suggested_path.DirName(); FilePath filename = info->suggested_path.BaseName(); if (!file_util::PathIsWritable(dir)) { info->prompt_user_for_save_location = true; PathService::Get(chrome::DIR_USER_DOCUMENTS, &info->suggested_path); info->suggested_path = info->suggested_path.Append(filename); } // If the download is deemed dangerous, we'll use a temporary name for it. if (info->is_dangerous) { info->original_name = FilePath(info->suggested_path).BaseName(); // Create a temporary file to hold the file until the user approves its // download. FilePath::StringType file_name; FilePath path; while (path.empty()) { base::SStringPrintf( &file_name, FILE_PATH_LITERAL("unconfirmed %d.crdownload"), base::RandInt(0, 100000)); path = dir.Append(file_name); if (file_util::PathExists(path)) path = FilePath(); } info->suggested_path = path; } else { // Do not add the path uniquifier if we are saving to a specific path as in // the drag-out case. if (info->save_info.file_path.empty()) { info->path_uniquifier = download_util::GetUniquePathNumberWithCrDownload( info->suggested_path); } // We know the final path, build it if necessary. if (info->path_uniquifier > 0) { download_util::AppendNumberToPath(&(info->suggested_path), info->path_uniquifier); // Setting path_uniquifier to 0 to make sure we don't try to unique it // later on. info->path_uniquifier = 0; } else if (info->path_uniquifier == -1) { // We failed to find a unique path. We have to prompt the user. info->prompt_user_for_save_location = true; } } // Create an empty file at the suggested path so that we don't allocate the // same "non-existant" path to multiple downloads. // See: http://code.google.com/p/chromium/issues/detail?id=3662 if (!info->prompt_user_for_save_location && info->save_info.file_path.empty()) { if (info->is_dangerous) file_util::WriteFile(info->suggested_path, "", 0); else file_util::WriteFile(download_util::GetCrDownloadPath( info->suggested_path), "", 0); } BrowserThread::PostTask( BrowserThread::UI, FROM_HERE, NewRunnableMethod(this, &DownloadManager::OnPathExistenceAvailable, info)); } void DownloadManager::OnPathExistenceAvailable(DownloadCreateInfo* info) { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); DCHECK(info); if (info->prompt_user_for_save_location) { // We must ask the user for the place to put the download. if (!select_file_dialog_.get()) select_file_dialog_ = SelectFileDialog::Create(this); TabContents* contents = tab_util::GetTabContentsByID(info->child_id, info->render_view_id); SelectFileDialog::FileTypeInfo file_type_info; file_type_info.extensions.resize(1); file_type_info.extensions[0].push_back(info->suggested_path.Extension()); if (!file_type_info.extensions[0][0].empty()) file_type_info.extensions[0][0].erase(0, 1); // drop the . file_type_info.include_all_files = true; gfx::NativeWindow owning_window = contents ? platform_util::GetTopLevel(contents->GetNativeView()) : NULL; select_file_dialog_->SelectFile(SelectFileDialog::SELECT_SAVEAS_FILE, string16(), info->suggested_path, &file_type_info, 0, FILE_PATH_LITERAL(""), owning_window, info); } else { // No prompting for download, just continue with the suggested name. CreateDownloadItem(info, info->suggested_path); } } void DownloadManager::CreateDownloadItem(DownloadCreateInfo* info, const FilePath& target_path) { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); scoped_ptr infop(info); info->path = target_path; DownloadItem* download = new DownloadItem(this, *info, profile_->IsOffTheRecord()); DCHECK(!ContainsKey(in_progress_, info->download_id)); in_progress_[info->download_id] = download; bool download_finished = ContainsKey(pending_finished_downloads_, info->download_id); if (download_finished || info->is_dangerous) { // The download has already finished or the download is not safe. // We can now rename the file to its final name (or its tentative name // in dangerous download cases). BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, NewRunnableMethod( file_manager_, &DownloadFileManager::OnFinalDownloadName, download->id(), target_path, !info->is_dangerous, this)); } else { // The download hasn't finished and it is a safe download. We need to // rename it to its intermediate '.crdownload' path. FilePath download_path = download_util::GetCrDownloadPath(target_path); BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, NewRunnableMethod( file_manager_, &DownloadFileManager::OnIntermediateDownloadName, download->id(), download_path, this)); download->Rename(download_path); } if (download_finished) { // If the download already completed by the time we reached this point, then // notify observers that it did. OnAllDataSaved(info->download_id, pending_finished_downloads_[info->download_id]); } download_history_->AddEntry(*info, download, NewCallback(this, &DownloadManager::OnCreateDownloadEntryComplete)); UpdateAppIcon(); } void DownloadManager::UpdateDownload(int32 download_id, int64 size) { DownloadMap::iterator it = in_progress_.find(download_id); if (it != in_progress_.end()) { DownloadItem* download = it->second; download->Update(size); download_history_->UpdateEntry(download); } UpdateAppIcon(); } void DownloadManager::OnAllDataSaved(int32 download_id, int64 size) { DownloadMap::iterator it = in_progress_.find(download_id); if (it == in_progress_.end()) { // The download is done, but the user hasn't selected a final location for // it yet (the Save As dialog box is probably still showing), so just keep // track of the fact that this download id is complete, when the // DownloadItem is constructed later we'll notify its completion then. PendingFinishedMap::iterator erase_it = pending_finished_downloads_.find(download_id); DCHECK(erase_it == pending_finished_downloads_.end()); pending_finished_downloads_[download_id] = size; return; } // Remove the id from the list of pending ids. PendingFinishedMap::iterator erase_it = pending_finished_downloads_.find(download_id); if (erase_it != pending_finished_downloads_.end()) pending_finished_downloads_.erase(erase_it); DownloadItem* download = it->second; download->OnAllDataSaved(size); // Clean up will happen when the history system create callback runs if we // don't have a valid db_handle yet. if (download->db_handle() != DownloadHistory::kUninitializedHandle) { in_progress_.erase(it); download_history_->UpdateEntry(download); } UpdateAppIcon(); // If this a dangerous download not yet validated by the user, don't do // anything. When the user notifies us, it will trigger a call to // ProceedWithFinishedDangerousDownload. if (download->safety_state() == DownloadItem::DANGEROUS) { dangerous_finished_[download_id] = download; return; } if (download->safety_state() == DownloadItem::DANGEROUS_BUT_VALIDATED) { // We first need to rename the downloaded file from its temporary name to // its final name before we can continue. BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, NewRunnableMethod( this, &DownloadManager::ProceedWithFinishedDangerousDownload, download->db_handle(), download->full_path(), download->target_name())); return; } download->OnSafeDownloadFinished(file_manager_); } void DownloadManager::DownloadRenamedToFinalName(int download_id, const FilePath& full_path) { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); DownloadItem* item = GetDownloadItem(download_id); if (!item) return; item->OnDownloadRenamedToFinalName(full_path); } void DownloadManager::DownloadFinished(DownloadItem* download) { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); // If this was a dangerous download, it has now been approved and must be // removed from dangerous_finished_ so it does not get deleted on shutdown. dangerous_finished_.erase(download->id()); download->Finished(); } // Called on the file thread. Renames the downloaded file to its original name. void DownloadManager::ProceedWithFinishedDangerousDownload( int64 download_handle, const FilePath& path, const FilePath& original_name) { bool success = false; FilePath new_path; int uniquifier = 0; if (file_util::PathExists(path)) { new_path = path.DirName().Append(original_name); // Make our name unique at this point, as if a dangerous file is downloading // and a 2nd download is started for a file with the same name, they would // have the same path. This is because we uniquify the name on download // start, and at that time the first file does not exists yet, so the second // file gets the same name. uniquifier = download_util::GetUniquePathNumber(new_path); if (uniquifier > 0) download_util::AppendNumberToPath(&new_path, uniquifier); success = file_util::Move(path, new_path); } else { NOTREACHED(); } BrowserThread::PostTask( BrowserThread::UI, FROM_HERE, NewRunnableMethod(this, &DownloadManager::DangerousDownloadRenamed, download_handle, success, new_path, uniquifier)); } // Call from the file thread when the finished dangerous download was renamed. void DownloadManager::DangerousDownloadRenamed(int64 download_handle, bool success, const FilePath& new_path, int new_path_uniquifier) { DownloadMap::iterator it = downloads_.find(download_handle); if (it == downloads_.end()) { NOTREACHED(); return; } DownloadItem* download = it->second; // If we failed to rename the file, we'll just keep the name as is. if (success) { // We need to update the path uniquifier so that the UI shows the right // name when calling GetFileNameToReportUser(). download->set_path_uniquifier(new_path_uniquifier); RenameDownload(download, new_path); } // Continue the download finished sequence. DownloadFinished(download); } void DownloadManager::DownloadCancelled(int32 download_id) { DownloadMap::iterator it = in_progress_.find(download_id); if (it == in_progress_.end()) return; DownloadItem* download = it->second; // Clean up will happen when the history system create callback runs if we // don't have a valid db_handle yet. if (download->db_handle() != DownloadHistory::kUninitializedHandle) { in_progress_.erase(it); download_history_->UpdateEntry(download); } DownloadCancelledInternal(download_id, download->render_process_id(), download->request_id()); UpdateAppIcon(); } void DownloadManager::DownloadCancelledInternal(int download_id, int render_process_id, int request_id) { // Cancel the network request. RDH is guaranteed to outlive the IO thread. BrowserThread::PostTask( BrowserThread::IO, FROM_HERE, NewRunnableFunction(&download_util::CancelDownloadRequest, g_browser_process->resource_dispatcher_host(), render_process_id, request_id)); BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, NewRunnableMethod( file_manager_, &DownloadFileManager::CancelDownload, download_id)); } void DownloadManager::PauseDownload(int32 download_id, bool pause) { DownloadMap::iterator it = in_progress_.find(download_id); if (it == in_progress_.end()) return; DownloadItem* download = it->second; if (pause == download->is_paused()) return; BrowserThread::PostTask( BrowserThread::IO, FROM_HERE, NewRunnableMethod(this, &DownloadManager::PauseDownloadRequest, g_browser_process->resource_dispatcher_host(), download->render_process_id(), download->request_id(), pause)); } void DownloadManager::UpdateAppIcon() { if (status_updater_) status_updater_->Update(); } void DownloadManager::RenameDownload(DownloadItem* download, const FilePath& new_path) { download->Rename(new_path); download_history_->UpdateDownloadPath(download, new_path); } void DownloadManager::PauseDownloadRequest(ResourceDispatcherHost* rdh, int render_process_id, int request_id, bool pause) { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); rdh->PauseRequest(render_process_id, request_id, pause); } void DownloadManager::RemoveDownload(int64 download_handle) { DownloadMap::iterator it = downloads_.find(download_handle); if (it == downloads_.end()) return; // Make history update. DownloadItem* download = it->second; download_history_->RemoveEntry(download); // Remove from our tables and delete. downloads_.erase(it); it = dangerous_finished_.find(download->id()); if (it != dangerous_finished_.end()) dangerous_finished_.erase(it); // Tell observers to refresh their views. NotifyModelChanged(); delete download; } int DownloadManager::RemoveDownloadsBetween(const base::Time remove_begin, const base::Time remove_end) { download_history_->RemoveEntriesBetween(remove_begin, remove_end); DownloadMap::iterator it = downloads_.begin(); std::vector pending_deletes; while (it != downloads_.end()) { DownloadItem* download = it->second; DownloadItem::DownloadState state = download->state(); if (download->start_time() >= remove_begin && (remove_end.is_null() || download->start_time() < remove_end) && (state == DownloadItem::COMPLETE || state == DownloadItem::CANCELLED)) { // Remove from the map and move to the next in the list. downloads_.erase(it++); // Also remove it from any completed dangerous downloads. DownloadMap::iterator dit = dangerous_finished_.find(download->id()); if (dit != dangerous_finished_.end()) dangerous_finished_.erase(dit); pending_deletes.push_back(download); continue; } ++it; } // Tell observers to refresh their views. int num_deleted = static_cast(pending_deletes.size()); if (num_deleted > 0) NotifyModelChanged(); // Delete the download items after updating the observers. STLDeleteContainerPointers(pending_deletes.begin(), pending_deletes.end()); pending_deletes.clear(); return num_deleted; } int DownloadManager::RemoveDownloads(const base::Time remove_begin) { return RemoveDownloadsBetween(remove_begin, base::Time()); } int DownloadManager::RemoveAllDownloads() { if (this != profile_->GetOriginalProfile()->GetDownloadManager()) { // This is an incognito downloader. Clear All should clear main download // manager as well. profile_->GetOriginalProfile()->GetDownloadManager()->RemoveAllDownloads(); } // The null times make the date range unbounded. return RemoveDownloadsBetween(base::Time(), base::Time()); } void DownloadManager::SavePageAsDownloadStarted(DownloadItem* download_item) { save_page_downloads_.push_back(download_item); } // Initiate a download of a specific URL. We send the request to the // ResourceDispatcherHost, and let it send us responses like a regular // download. void DownloadManager::DownloadUrl(const GURL& url, const GURL& referrer, const std::string& referrer_charset, TabContents* tab_contents) { DownloadUrlToFile(url, referrer, referrer_charset, DownloadSaveInfo(), tab_contents); } void DownloadManager::DownloadUrlToFile(const GURL& url, const GURL& referrer, const std::string& referrer_charset, const DownloadSaveInfo& save_info, TabContents* tab_contents) { DCHECK(tab_contents); BrowserThread::PostTask(BrowserThread::IO, FROM_HERE, NewRunnableFunction(&download_util::DownloadUrl, url, referrer, referrer_charset, save_info, g_browser_process->resource_dispatcher_host(), tab_contents->GetRenderProcessHost()->id(), tab_contents->render_view_host()->routing_id(), request_context_getter_)); } void DownloadManager::AddObserver(Observer* observer) { observers_.AddObserver(observer); observer->ModelChanged(); } void DownloadManager::RemoveObserver(Observer* observer) { observers_.RemoveObserver(observer); } bool DownloadManager::ShouldOpenFileBasedOnExtension( const FilePath& path) const { FilePath::StringType extension = path.Extension(); if (extension.empty()) return false; if (download_util::IsExecutableExtension(extension)) return false; if (Extension::IsExtension(path)) return false; DCHECK(extension[0] == FilePath::kExtensionSeparator); extension.erase(0, 1); return download_prefs_->IsAutoOpenEnabledForExtension(extension); } bool DownloadManager::IsDownloadProgressKnown() { for (DownloadMap::iterator i = in_progress_.begin(); i != in_progress_.end(); ++i) { if (i->second->total_bytes() <= 0) return false; } return true; } int64 DownloadManager::GetInProgressDownloadCount() { return in_progress_.size(); } int64 DownloadManager::GetReceivedDownloadBytes() { DCHECK(IsDownloadProgressKnown()); int64 received_bytes = 0; for (DownloadMap::iterator i = in_progress_.begin(); i != in_progress_.end(); ++i) { received_bytes += i->second->received_bytes(); } return received_bytes; } int64 DownloadManager::GetTotalDownloadBytes() { DCHECK(IsDownloadProgressKnown()); int64 total_bytes = 0; for (DownloadMap::iterator i = in_progress_.begin(); i != in_progress_.end(); ++i) { total_bytes += i->second->total_bytes(); } return total_bytes; } void DownloadManager::FileSelected(const FilePath& path, int index, void* params) { DownloadCreateInfo* info = reinterpret_cast(params); if (info->prompt_user_for_save_location) last_download_path_ = path.DirName(); CreateDownloadItem(info, path); } void DownloadManager::FileSelectionCanceled(void* params) { // The user didn't pick a place to save the file, so need to cancel the // download that's already in progress to the temporary location. DownloadCreateInfo* info = reinterpret_cast(params); DownloadCancelledInternal(info->download_id, info->child_id, info->request_id); } void DownloadManager::DangerousDownloadValidated(DownloadItem* download) { DCHECK_EQ(DownloadItem::DANGEROUS, download->safety_state()); download->set_safety_state(DownloadItem::DANGEROUS_BUT_VALIDATED); download->UpdateObservers(); // If the download is not complete, nothing to do. The required // post-processing will be performed when it does complete. if (download->state() != DownloadItem::COMPLETE) return; BrowserThread::PostTask( BrowserThread::FILE, FROM_HERE, NewRunnableMethod( this, &DownloadManager::ProceedWithFinishedDangerousDownload, download->db_handle(), download->full_path(), download->target_name())); } // Operations posted to us from the history service ---------------------------- // The history service has retrieved all download entries. 'entries' contains // 'DownloadCreateInfo's in sorted order (by ascending start_time). void DownloadManager::OnQueryDownloadEntriesComplete( std::vector* entries) { for (size_t i = 0; i < entries->size(); ++i) { DownloadItem* download = new DownloadItem(this, entries->at(i)); DCHECK(!ContainsKey(downloads_, download->db_handle())); downloads_[download->db_handle()] = download; } NotifyModelChanged(); } // Once the new DownloadItem's creation info has been committed to the history // service, we associate the DownloadItem with the db handle, update our // 'downloads_' map and inform observers. void DownloadManager::OnCreateDownloadEntryComplete( DownloadCreateInfo info, int64 db_handle) { DownloadMap::iterator it = in_progress_.find(info.download_id); DCHECK(it != in_progress_.end()); DownloadItem* download = it->second; // It's not immediately obvious, but HistoryBackend::CreateDownload() can // call this function with an invalid |db_handle|. For instance, this can // happen when the history database is offline. We cannot have multiple // DownloadItems with the same invalid db_handle, so we need to assign a // unique |db_handle| here. if (db_handle == DownloadHistory::kUninitializedHandle) db_handle = download_history_->GetNextFakeDbHandle(); DCHECK(download->db_handle() == DownloadHistory::kUninitializedHandle); download->set_db_handle(db_handle); // Insert into our full map. DCHECK(downloads_.find(download->db_handle()) == downloads_.end()); downloads_[download->db_handle()] = download; // Show in the appropropriate browser UI. ShowDownloadInBrowser(info, download); // Inform interested objects about the new download. NotifyModelChanged(); // If this download has been completed before we've received the db handle, // post one final message to the history service so that it can be properly // in sync with the DownloadItem's completion status, and also inform any // observers so that they get more than just the start notification. if (download->state() != DownloadItem::IN_PROGRESS) { in_progress_.erase(it); download_history_->UpdateEntry(download); download->UpdateObservers(); } UpdateAppIcon(); } void DownloadManager::ShowDownloadInBrowser(const DownloadCreateInfo& info, DownloadItem* download) { // The 'contents' may no longer exist if the user closed the tab before we // get this start completion event. If it does, tell the origin TabContents // to display its download shelf. TabContents* contents = tab_util::GetTabContentsByID(info.child_id, info.render_view_id); // If the contents no longer exists, we start the download in the last active // browser. This is not ideal but better than fully hiding the download from // the user. if (!contents) { Browser* last_active = BrowserList::GetLastActive(); if (last_active) contents = last_active->GetSelectedTabContents(); } if (contents) contents->OnStartDownload(download); } // Clears the last download path, used to initialize "save as" dialogs. void DownloadManager::ClearLastDownloadPath() { last_download_path_ = FilePath(); } void DownloadManager::NotifyModelChanged() { FOR_EACH_OBSERVER(Observer, observers_, ModelChanged()); } DownloadItem* DownloadManager::GetDownloadItem(int id) { for (DownloadMap::iterator it = downloads_.begin(); it != downloads_.end(); ++it) { DownloadItem* item = it->second; if (item->id() == id) return item; } return NULL; } // DownloadManager::OtherDownloadManagerObserver implementation ---------------- DownloadManager::OtherDownloadManagerObserver::OtherDownloadManagerObserver( DownloadManager* observing_download_manager) : observing_download_manager_(observing_download_manager), observed_download_manager_(NULL) { if (observing_download_manager->profile_->GetOriginalProfile() == observing_download_manager->profile_) { return; } observed_download_manager_ = observing_download_manager_-> profile_->GetOriginalProfile()->GetDownloadManager(); observed_download_manager_->AddObserver(this); } DownloadManager::OtherDownloadManagerObserver::~OtherDownloadManagerObserver() { if (observed_download_manager_) observed_download_manager_->RemoveObserver(this); } void DownloadManager::OtherDownloadManagerObserver::ModelChanged() { observing_download_manager_->NotifyModelChanged(); } void DownloadManager::OtherDownloadManagerObserver::ManagerGoingDown() { observed_download_manager_ = NULL; }