зеркало из https://github.com/mozilla/gecko-dev.git
2792 строки
96 KiB
C++
2792 строки
96 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:cin:
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications, Inc.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Scott MacGregor <mscott@netscape.com>
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* Bill Law <law@netscape.com>
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* Christian Biesinger <cbiesinger@web.de>
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* Dan Mosedale <dmose@mozilla.org>
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* Myk Melez <myk@mozilla.org>
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* Ehsan Akhgari <ehsan.akhgari@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsExternalHelperAppService.h"
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#include "nsCExternalHandlerService.h"
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#include "nsIURI.h"
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#include "nsIURL.h"
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#include "nsIFile.h"
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#include "nsIFileURL.h"
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#include "nsIChannel.h"
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#include "nsIDirectoryService.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "nsICategoryManager.h"
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#include "nsXPIDLString.h"
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#include "nsUnicharUtils.h"
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#include "nsIStringEnumerator.h"
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#include "nsMemory.h"
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#include "nsIStreamListener.h"
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#include "nsIMIMEService.h"
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#include "nsILoadGroup.h"
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#include "nsIWebProgressListener.h"
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#include "nsITransfer.h"
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#include "nsReadableUtils.h"
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#include "nsIRequest.h"
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#include "nsDirectoryServiceDefs.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsThreadUtils.h"
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#include "nsAutoPtr.h"
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#include "nsIMutableArray.h"
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// used to access our datastore of user-configured helper applications
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#include "nsIHandlerService.h"
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#include "nsIMIMEInfo.h"
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#include "nsIRefreshURI.h" // XXX needed to redirect according to Refresh: URI
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#include "nsIDocumentLoader.h" // XXX needed to get orig. channel and assoc. refresh uri
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#include "nsIHelperAppLauncherDialog.h"
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#include "nsIContentDispatchChooser.h"
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#include "nsNetUtil.h"
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#include "nsIIOService.h"
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#include "nsNetCID.h"
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#include "nsChannelProperties.h"
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#include "nsMimeTypes.h"
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// used for header disposition information.
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#include "nsIHttpChannel.h"
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#include "nsIEncodedChannel.h"
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#include "nsIMultiPartChannel.h"
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#include "nsIFileChannel.h"
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#include "nsIObserverService.h" // so we can be a profile change observer
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#include "nsIPropertyBag2.h" // for the 64-bit content length
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#ifdef XP_MACOSX
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#include "nsILocalFileMac.h"
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#ifndef __LP64__
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#include "nsIAppleFileDecoder.h"
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#endif
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#elif defined(XP_OS2)
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#include "nsILocalFileOS2.h"
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#endif
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#include "nsIPluginHost.h" // XXX needed for ext->type mapping (bug 233289)
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#include "nsEscape.h"
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#include "nsIStringBundle.h" // XXX needed to localize error msgs
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#include "nsIPrompt.h"
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#include "nsITextToSubURI.h" // to unescape the filename
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#include "nsIMIMEHeaderParam.h"
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#include "nsIPrefService.h"
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#include "nsIWindowWatcher.h"
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#include "nsIDownloadHistory.h" // to mark downloads as visited
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#include "nsDocShellCID.h"
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#include "nsIDOMWindow.h"
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#include "nsIDOMWindowInternal.h"
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#include "nsIDocShell.h"
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#include "nsCRT.h"
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#include "nsLocalHandlerApp.h"
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#include "nsIRandomGenerator.h"
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#include "plbase64.h"
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#include "prmem.h"
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#include "nsIPrivateBrowsingService.h"
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// Buffer file writes in 32kb chunks
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#define BUFFERED_OUTPUT_SIZE (1024 * 32)
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// Download Folder location constants
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#define NS_PREF_DOWNLOAD_DIR "browser.download.dir"
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#define NS_PREF_DOWNLOAD_FOLDERLIST "browser.download.folderList"
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enum {
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NS_FOLDER_VALUE_DESKTOP = 0
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, NS_FOLDER_VALUE_DOWNLOADS = 1
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, NS_FOLDER_VALUE_CUSTOM = 2
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};
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#ifdef PR_LOGGING
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PRLogModuleInfo* nsExternalHelperAppService::mLog = nsnull;
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#endif
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// Using level 3 here because the OSHelperAppServices use a log level
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// of PR_LOG_DEBUG (4), and we want less detailed output here
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// Using 3 instead of PR_LOG_WARN because we don't output warnings
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#define LOG(args) PR_LOG(mLog, 3, args)
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#define LOG_ENABLED() PR_LOG_TEST(mLog, 3)
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static const char NEVER_ASK_PREF_BRANCH[] = "browser.helperApps.neverAsk.";
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static const char NEVER_ASK_FOR_SAVE_TO_DISK_PREF[] = "saveToDisk";
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static const char NEVER_ASK_FOR_OPEN_FILE_PREF[] = "openFile";
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/**
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* Contains a pointer to the helper app service, set in its constructor
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*/
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nsExternalHelperAppService* gExtProtSvc;
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// Helper functions for Content-Disposition headers
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/**
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* Given a URI fragment, unescape it
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* @param aFragment The string to unescape
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* @param aURI The URI from which this fragment is taken. Only its character set
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* will be used.
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* @param aResult [out] Unescaped string.
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*/
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static nsresult UnescapeFragment(const nsACString& aFragment, nsIURI* aURI,
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nsAString& aResult)
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{
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// First, we need a charset
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nsCAutoString originCharset;
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nsresult rv = aURI->GetOriginCharset(originCharset);
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NS_ENSURE_SUCCESS(rv, rv);
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// Now, we need the unescaper
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nsCOMPtr<nsITextToSubURI> textToSubURI = do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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return textToSubURI->UnEscapeURIForUI(originCharset, aFragment, aResult);
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}
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/**
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* UTF-8 version of UnescapeFragment.
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* @param aFragment The string to unescape
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* @param aURI The URI from which this fragment is taken. Only its character set
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* will be used.
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* @param aResult [out] Unescaped string, UTF-8 encoded.
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* @note It is safe to pass the same string for aFragment and aResult.
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* @note When this function fails, aResult will not be modified.
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*/
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static nsresult UnescapeFragment(const nsACString& aFragment, nsIURI* aURI,
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nsACString& aResult)
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{
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nsAutoString result;
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nsresult rv = UnescapeFragment(aFragment, aURI, result);
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if (NS_SUCCEEDED(rv))
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CopyUTF16toUTF8(result, aResult);
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return rv;
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}
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/** Gets the content-disposition header from a channel, using nsIHttpChannel
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* or nsIMultipartChannel if available
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* @param aChannel The channel to extract the disposition header from
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* @param aDisposition Reference to a string where the header is to be stored
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*/
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static void ExtractDisposition(nsIChannel* aChannel, nsACString& aDisposition)
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{
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aDisposition.Truncate();
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// First see whether this is an http channel
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nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
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if (httpChannel)
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{
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httpChannel->GetResponseHeader(NS_LITERAL_CSTRING("content-disposition"), aDisposition);
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}
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if (aDisposition.IsEmpty())
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{
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nsCOMPtr<nsIMultiPartChannel> multipartChannel(do_QueryInterface(aChannel));
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if (multipartChannel)
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{
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multipartChannel->GetContentDisposition(aDisposition);
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}
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}
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}
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/** Extracts the filename out of a content-disposition header
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* @param aFilename [out] The filename. Can be empty on error.
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* @param aDisposition Value of a Content-Disposition header
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* @param aURI Optional. Will be used to get a fallback charset for the
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* filename, if it is QI'able to nsIURL
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* @param aMIMEHeaderParam Optional. Pointer to a nsIMIMEHeaderParam class, so
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* that it doesn't need to be fetched by this function.
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*/
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static void GetFilenameFromDisposition(nsAString& aFilename,
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const nsACString& aDisposition,
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nsIURI* aURI = nsnull,
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nsIMIMEHeaderParam* aMIMEHeaderParam = nsnull)
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{
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aFilename.Truncate();
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nsCOMPtr<nsIMIMEHeaderParam> mimehdrpar(aMIMEHeaderParam);
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if (!mimehdrpar) {
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mimehdrpar = do_GetService(NS_MIMEHEADERPARAM_CONTRACTID);
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if (!mimehdrpar)
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return;
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}
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nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
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nsCAutoString fallbackCharset;
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if (url)
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url->GetOriginCharset(fallbackCharset);
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// Get the value of 'filename' parameter
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nsresult rv = mimehdrpar->GetParameter(aDisposition, "filename", fallbackCharset,
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PR_TRUE, nsnull, aFilename);
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if (NS_FAILED(rv) || aFilename.IsEmpty())
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// Try 'name' parameter, instead.
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rv = mimehdrpar->GetParameter(aDisposition, "name", fallbackCharset, PR_TRUE,
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nsnull, aFilename);
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}
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/**
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* Given a channel, returns the filename and extension the channel has.
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* This uses the URL and other sources (nsIMultiPartChannel).
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* Also gives back whether the channel requested external handling (i.e.
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* whether Content-Disposition: attachment was sent)
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* @param aChannel The channel to extract the filename/extension from
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* @param aFileName [out] Reference to the string where the filename should be
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* stored. Empty if it could not be retrieved.
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* WARNING - this filename may contain characters which the OS does not
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* allow as part of filenames!
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* @param aExtension [out] Reference to the string where the extension should
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* be stored. Empty if it could not be retrieved. Stored in UTF-8.
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* @param aAllowURLExtension (optional) Get the extension from the URL if no
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* Content-Disposition header is present. Default is true.
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* @retval true The server sent Content-Disposition:attachment or equivalent
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* @retval false Content-Disposition: inline or no content-disposition header
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* was sent.
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*/
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static PRBool GetFilenameAndExtensionFromChannel(nsIChannel* aChannel,
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nsString& aFileName,
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nsCString& aExtension,
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PRBool aAllowURLExtension = PR_TRUE)
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{
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aExtension.Truncate();
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/*
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* If the channel is an http or part of a multipart channel and we
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* have a content disposition header set, then use the file name
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* suggested there as the preferred file name to SUGGEST to the
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* user. we shouldn't actually use that without their
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* permission... otherwise just use our temp file
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*/
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nsCAutoString disp;
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ExtractDisposition(aChannel, disp);
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PRBool handleExternally = PR_FALSE;
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nsCOMPtr<nsIURI> uri;
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nsresult rv;
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aChannel->GetURI(getter_AddRefs(uri));
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// content-disposition: has format:
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// disposition-type < ; name=value >* < ; filename=value > < ; name=value >*
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if (!disp.IsEmpty())
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{
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nsCOMPtr<nsIMIMEHeaderParam> mimehdrpar = do_GetService(NS_MIMEHEADERPARAM_CONTRACTID, &rv);
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if (NS_FAILED(rv))
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return PR_FALSE;
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nsCAutoString fallbackCharset;
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uri->GetOriginCharset(fallbackCharset);
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// Get the disposition type
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nsAutoString dispToken;
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rv = mimehdrpar->GetParameter(disp, "", fallbackCharset, PR_TRUE,
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nsnull, dispToken);
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// RFC 2183, section 2.8 says that an unknown disposition
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// value should be treated as "attachment"
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// XXXbz this code is duplicated in nsDocumentOpenInfo::DispatchContent.
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// Factor it out! Maybe store it in the nsDocumentOpenInfo?
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if (NS_FAILED(rv) ||
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(!dispToken.IsEmpty() &&
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!dispToken.LowerCaseEqualsLiteral("inline") &&
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// Broken sites just send
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// Content-Disposition: filename="file"
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// without a disposition token... screen those out.
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!dispToken.EqualsIgnoreCase("filename", 8) &&
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// Also in use is Content-Disposition: name="file"
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!dispToken.EqualsIgnoreCase("name", 4)))
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{
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// We have a content-disposition of "attachment" or unknown
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handleExternally = PR_TRUE;
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}
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// We may not have a disposition type listed; some servers suck.
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// But they could have listed a filename anyway.
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GetFilenameFromDisposition(aFileName, disp, uri, mimehdrpar);
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} // we had a disp header
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// If the disposition header didn't work, try the filename from nsIURL
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nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
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if (url && aFileName.IsEmpty())
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{
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if (aAllowURLExtension) {
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url->GetFileExtension(aExtension);
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UnescapeFragment(aExtension, url, aExtension);
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// Windows ignores terminating dots. So we have to as well, so
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// that our security checks do "the right thing"
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// In case the aExtension consisted only of the dot, the code below will
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// extract an aExtension from the filename
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aExtension.Trim(".", PR_FALSE);
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}
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// try to extract the file name from the url and use that as a first pass as the
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// leaf name of our temp file...
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nsCAutoString leafName;
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url->GetFileName(leafName);
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if (!leafName.IsEmpty())
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{
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rv = UnescapeFragment(leafName, url, aFileName);
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if (NS_FAILED(rv))
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{
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CopyUTF8toUTF16(leafName, aFileName); // use escaped name
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}
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}
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}
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// Extract Extension, if we have a filename; otherwise,
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// truncate the string
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if (aExtension.IsEmpty()) {
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if (!aFileName.IsEmpty())
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{
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// Windows ignores terminating dots. So we have to as well, so
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// that our security checks do "the right thing"
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aFileName.Trim(".", PR_FALSE);
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// XXX RFindCharInReadable!!
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nsAutoString fileNameStr(aFileName);
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PRInt32 idx = fileNameStr.RFindChar(PRUnichar('.'));
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if (idx != kNotFound)
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CopyUTF16toUTF8(StringTail(fileNameStr, fileNameStr.Length() - idx - 1), aExtension);
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}
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}
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return handleExternally;
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}
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/**
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* Obtains the download directory to use. This tends to vary per platform, and
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* needs to be consistent throughout our codepaths.
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*/
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static nsresult GetDownloadDirectory(nsIFile **_directory)
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{
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nsCOMPtr<nsIFile> dir;
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#ifdef XP_MACOSX
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// On OS X, we first try to get the users download location, if it's set.
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nsCOMPtr<nsIPrefBranch> prefs =
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do_GetService(NS_PREFSERVICE_CONTRACTID);
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NS_ENSURE_TRUE(prefs, NS_ERROR_UNEXPECTED);
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PRInt32 folderValue = -1;
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(void) prefs->GetIntPref(NS_PREF_DOWNLOAD_FOLDERLIST, &folderValue);
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switch (folderValue) {
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case NS_FOLDER_VALUE_DESKTOP:
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(void) NS_GetSpecialDirectory(NS_OS_DESKTOP_DIR, getter_AddRefs(dir));
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break;
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case NS_FOLDER_VALUE_CUSTOM:
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{
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(void) prefs->GetComplexValue(NS_PREF_DOWNLOAD_DIR,
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NS_GET_IID(nsILocalFile),
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getter_AddRefs(dir));
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if (!dir) break;
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// We have the directory, and now we need to make sure it exists
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PRBool dirExists = PR_FALSE;
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(void) dir->Exists(&dirExists);
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if (dirExists) break;
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nsresult rv = dir->Create(nsIFile::DIRECTORY_TYPE, 0755);
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if (NS_FAILED(rv)) {
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dir = nsnull;
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break;
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}
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}
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break;
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case NS_FOLDER_VALUE_DOWNLOADS:
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// This is just the OS default location, so fall out
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break;
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}
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if (!dir) {
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// If not, we default to the OS X default download location.
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nsresult rv = NS_GetSpecialDirectory(NS_OSX_DEFAULT_DOWNLOAD_DIR,
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getter_AddRefs(dir));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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#else
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// On all other platforms, we default to the systems temporary directory.
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nsresult rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(dir));
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NS_ENSURE_SUCCESS(rv, rv);
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#endif
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NS_ASSERTION(dir, "Somehow we didn't get a download directory!");
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dir.forget(_directory);
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return NS_OK;
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}
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|
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/**
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* Structure for storing extension->type mappings.
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* @see defaultMimeEntries
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*/
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struct nsDefaultMimeTypeEntry {
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const char* mMimeType;
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const char* mFileExtension;
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};
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/**
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* Default extension->mimetype mappings. These are not overridable.
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* If you add types here, make sure they are lowercase, or you'll regret it.
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*/
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static nsDefaultMimeTypeEntry defaultMimeEntries [] =
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{
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// The following are those extensions that we're asked about during startup,
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// sorted by order used
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{ IMAGE_GIF, "gif" },
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{ TEXT_XML, "xml" },
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{ APPLICATION_RDF, "rdf" },
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{ TEXT_XUL, "xul" },
|
|
{ IMAGE_PNG, "png" },
|
|
// -- end extensions used during startup
|
|
{ TEXT_CSS, "css" },
|
|
{ IMAGE_JPG, "jpeg" },
|
|
{ IMAGE_JPG, "jpg" },
|
|
{ TEXT_HTML, "html" },
|
|
{ TEXT_HTML, "htm" },
|
|
{ APPLICATION_XPINSTALL, "xpi" },
|
|
{ "application/xhtml+xml", "xhtml" },
|
|
{ "application/xhtml+xml", "xht" },
|
|
{ TEXT_PLAIN, "txt" }
|
|
};
|
|
|
|
/**
|
|
* This is a small private struct used to help us initialize some
|
|
* default mime types.
|
|
*/
|
|
struct nsExtraMimeTypeEntry {
|
|
const char* mMimeType;
|
|
const char* mFileExtensions;
|
|
const char* mDescription;
|
|
};
|
|
|
|
#ifdef XP_MACOSX
|
|
#define MAC_TYPE(x) x
|
|
#else
|
|
#define MAC_TYPE(x) 0
|
|
#endif
|
|
|
|
/**
|
|
* This table lists all of the 'extra' content types that we can deduce from particular
|
|
* file extensions. These entries also ensure that we provide a good descriptive name
|
|
* when we encounter files with these content types and/or extensions. These can be
|
|
* overridden by user helper app prefs.
|
|
* If you add types here, make sure they are lowercase, or you'll regret it.
|
|
*/
|
|
static nsExtraMimeTypeEntry extraMimeEntries [] =
|
|
{
|
|
#if defined(VMS)
|
|
{ APPLICATION_OCTET_STREAM, "exe,com,bin,sav,bck,pcsi,dcx_axpexe,dcx_vaxexe,sfx_axpexe,sfx_vaxexe", "Binary File" },
|
|
#elif defined(XP_MACOSX) // don't define .bin on the mac...use internet config to look that up...
|
|
{ APPLICATION_OCTET_STREAM, "exe,com", "Binary File" },
|
|
#else
|
|
{ APPLICATION_OCTET_STREAM, "exe,com,bin", "Binary File" },
|
|
#endif
|
|
{ APPLICATION_GZIP2, "gz", "gzip" },
|
|
{ "application/x-arj", "arj", "ARJ file" },
|
|
{ APPLICATION_XPINSTALL, "xpi", "XPInstall Install" },
|
|
{ APPLICATION_POSTSCRIPT, "ps,eps,ai", "Postscript File" },
|
|
{ APPLICATION_XJAVASCRIPT, "js", "Javascript Source File" },
|
|
{ IMAGE_ART, "art", "ART Image" },
|
|
{ IMAGE_BMP, "bmp", "BMP Image" },
|
|
{ IMAGE_GIF, "gif", "GIF Image" },
|
|
{ IMAGE_ICO, "ico,cur", "ICO Image" },
|
|
{ IMAGE_JPG, "jpeg,jpg,jfif,pjpeg,pjp", "JPEG Image" },
|
|
{ IMAGE_PNG, "png", "PNG Image" },
|
|
{ IMAGE_TIFF, "tiff,tif", "TIFF Image" },
|
|
{ IMAGE_XBM, "xbm", "XBM Image" },
|
|
{ "image/svg+xml", "svg", "Scalable Vector Graphics" },
|
|
{ MESSAGE_RFC822, "eml", "RFC-822 data" },
|
|
{ TEXT_PLAIN, "txt,text", "Text File" },
|
|
{ TEXT_HTML, "html,htm,shtml,ehtml", "HyperText Markup Language" },
|
|
{ "application/xhtml+xml", "xhtml,xht", "Extensible HyperText Markup Language" },
|
|
{ APPLICATION_MATHML_XML, "mml", "Mathematical Markup Language" },
|
|
{ APPLICATION_RDF, "rdf", "Resource Description Framework" },
|
|
{ TEXT_XUL, "xul", "XML-Based User Interface Language" },
|
|
{ TEXT_XML, "xml,xsl,xbl", "Extensible Markup Language" },
|
|
{ TEXT_CSS, "css", "Style Sheet" },
|
|
{ VIDEO_OGG, "ogv", "Ogg Video" },
|
|
{ VIDEO_OGG, "ogg", "Ogg Video" },
|
|
{ APPLICATION_OGG, "ogg", "Ogg Video"},
|
|
{ AUDIO_OGG, "oga", "Ogg Audio" },
|
|
{ AUDIO_WAV, "wav", "Waveform Audio" }
|
|
};
|
|
|
|
#undef MAC_TYPE
|
|
|
|
/**
|
|
* File extensions for which decoding should be disabled.
|
|
* NOTE: These MUST be lower-case and ASCII.
|
|
*/
|
|
static nsDefaultMimeTypeEntry nonDecodableExtensions [] = {
|
|
{ APPLICATION_GZIP, "gz" },
|
|
{ APPLICATION_GZIP, "tgz" },
|
|
{ APPLICATION_ZIP, "zip" },
|
|
{ APPLICATION_COMPRESS, "z" },
|
|
{ APPLICATION_GZIP, "svgz" }
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS6(
|
|
nsExternalHelperAppService,
|
|
nsIExternalHelperAppService,
|
|
nsPIExternalAppLauncher,
|
|
nsIExternalProtocolService,
|
|
nsIMIMEService,
|
|
nsIObserver,
|
|
nsISupportsWeakReference)
|
|
|
|
nsExternalHelperAppService::nsExternalHelperAppService() :
|
|
mInPrivateBrowsing(PR_FALSE)
|
|
{
|
|
gExtProtSvc = this;
|
|
}
|
|
nsresult nsExternalHelperAppService::Init()
|
|
{
|
|
nsCOMPtr<nsIPrivateBrowsingService> pbs =
|
|
do_GetService(NS_PRIVATE_BROWSING_SERVICE_CONTRACTID);
|
|
if (pbs) {
|
|
pbs->GetPrivateBrowsingEnabled(&mInPrivateBrowsing);
|
|
}
|
|
|
|
// Add an observer for profile change
|
|
nsresult rv = NS_OK;
|
|
nsCOMPtr<nsIObserverService> obs = do_GetService("@mozilla.org/observer-service;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
#ifdef PR_LOGGING
|
|
if (!mLog) {
|
|
mLog = PR_NewLogModule("HelperAppService");
|
|
if (!mLog)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
#endif
|
|
|
|
rv = obs->AddObserver(this, "profile-before-change", PR_TRUE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
return obs->AddObserver(this, NS_PRIVATE_BROWSING_SWITCH_TOPIC, PR_TRUE);
|
|
}
|
|
|
|
nsExternalHelperAppService::~nsExternalHelperAppService()
|
|
{
|
|
gExtProtSvc = nsnull;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::DoContent(const nsACString& aMimeContentType,
|
|
nsIRequest *aRequest,
|
|
nsIInterfaceRequestor *aWindowContext,
|
|
PRBool aForceSave,
|
|
nsIStreamListener ** aStreamListener)
|
|
{
|
|
nsAutoString fileName;
|
|
nsCAutoString fileExtension;
|
|
PRUint32 reason = nsIHelperAppLauncherDialog::REASON_CANTHANDLE;
|
|
nsresult rv;
|
|
|
|
// Get the file extension and name that we will need later
|
|
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
|
|
if (channel) {
|
|
// Check if we have a POST request, in which case we don't want to use
|
|
// the url's extension
|
|
PRBool allowURLExt = PR_TRUE;
|
|
nsCOMPtr<nsIHttpChannel> httpChan = do_QueryInterface(channel);
|
|
if (httpChan) {
|
|
nsCAutoString requestMethod;
|
|
httpChan->GetRequestMethod(requestMethod);
|
|
allowURLExt = !requestMethod.Equals("POST");
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
channel->GetURI(getter_AddRefs(uri));
|
|
|
|
// Check if we had a query string - we don't want to check the URL
|
|
// extension if a query is present in the URI
|
|
// If we already know we don't want to check the URL extension, don't
|
|
// bother checking the query
|
|
if (uri && allowURLExt) {
|
|
nsCOMPtr<nsIURL> url = do_QueryInterface(uri);
|
|
|
|
if (url) {
|
|
nsCAutoString query;
|
|
|
|
// We only care about the query for HTTP and HTTPS URLs
|
|
PRBool isHTTP, isHTTPS;
|
|
rv = uri->SchemeIs("http", &isHTTP);
|
|
if (NS_FAILED(rv))
|
|
isHTTP = PR_FALSE;
|
|
rv = uri->SchemeIs("https", &isHTTPS);
|
|
if (NS_FAILED(rv))
|
|
isHTTPS = PR_FALSE;
|
|
|
|
if (isHTTP || isHTTPS)
|
|
url->GetQuery(query);
|
|
|
|
// Only get the extension if the query is empty; if it isn't, then the
|
|
// extension likely belongs to a cgi script and isn't helpful
|
|
allowURLExt = query.IsEmpty();
|
|
}
|
|
}
|
|
// Extract name & extension
|
|
PRBool isAttachment = GetFilenameAndExtensionFromChannel(channel, fileName,
|
|
fileExtension,
|
|
allowURLExt);
|
|
LOG(("Found extension '%s' (filename is '%s', handling attachment: %i)",
|
|
fileExtension.get(), NS_ConvertUTF16toUTF8(fileName).get(),
|
|
isAttachment));
|
|
if (isAttachment)
|
|
reason = nsIHelperAppLauncherDialog::REASON_SERVERREQUEST;
|
|
}
|
|
|
|
LOG(("HelperAppService::DoContent: mime '%s', extension '%s'\n",
|
|
PromiseFlatCString(aMimeContentType).get(), fileExtension.get()));
|
|
|
|
// we get the mime service here even though we're the default implementation of it,
|
|
// so it's possible to override only the mime service and not need to reimplement the
|
|
// whole external helper app service itself
|
|
nsCOMPtr<nsIMIMEService> mimeSvc(do_GetService(NS_MIMESERVICE_CONTRACTID));
|
|
NS_ENSURE_TRUE(mimeSvc, NS_ERROR_FAILURE);
|
|
|
|
// Try to find a mime object by looking at the mime type/extension
|
|
nsCOMPtr<nsIMIMEInfo> mimeInfo;
|
|
if (aMimeContentType.Equals(APPLICATION_GUESS_FROM_EXT, nsCaseInsensitiveCStringComparator())) {
|
|
nsCAutoString mimeType;
|
|
if (!fileExtension.IsEmpty()) {
|
|
mimeSvc->GetFromTypeAndExtension(EmptyCString(), fileExtension, getter_AddRefs(mimeInfo));
|
|
if (mimeInfo) {
|
|
mimeInfo->GetMIMEType(mimeType);
|
|
|
|
LOG(("OS-Provided mime type '%s' for extension '%s'\n",
|
|
mimeType.get(), fileExtension.get()));
|
|
}
|
|
}
|
|
|
|
if (fileExtension.IsEmpty() || mimeType.IsEmpty()) {
|
|
// Extension lookup gave us no useful match
|
|
mimeSvc->GetFromTypeAndExtension(NS_LITERAL_CSTRING(APPLICATION_OCTET_STREAM), fileExtension,
|
|
getter_AddRefs(mimeInfo));
|
|
mimeType.AssignLiteral(APPLICATION_OCTET_STREAM);
|
|
}
|
|
if (channel)
|
|
channel->SetContentType(mimeType);
|
|
// Don't overwrite SERVERREQUEST
|
|
if (reason == nsIHelperAppLauncherDialog::REASON_CANTHANDLE)
|
|
reason = nsIHelperAppLauncherDialog::REASON_TYPESNIFFED;
|
|
}
|
|
else {
|
|
mimeSvc->GetFromTypeAndExtension(aMimeContentType, fileExtension,
|
|
getter_AddRefs(mimeInfo));
|
|
}
|
|
LOG(("Type/Ext lookup found 0x%p\n", mimeInfo.get()));
|
|
|
|
// No mimeinfo -> we can't continue. probably OOM.
|
|
if (!mimeInfo)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
*aStreamListener = nsnull;
|
|
// We want the mimeInfo's primary extension to pass it to
|
|
// nsExternalAppHandler
|
|
nsCAutoString buf;
|
|
mimeInfo->GetPrimaryExtension(buf);
|
|
|
|
nsExternalAppHandler * handler = new nsExternalAppHandler(mimeInfo,
|
|
buf,
|
|
aWindowContext,
|
|
fileName,
|
|
reason,
|
|
aForceSave);
|
|
if (!handler)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
NS_ADDREF(*aStreamListener = handler);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::ApplyDecodingForExtension(const nsACString& aExtension,
|
|
const nsACString& aEncodingType,
|
|
PRBool *aApplyDecoding)
|
|
{
|
|
*aApplyDecoding = PR_TRUE;
|
|
PRUint32 i;
|
|
for(i = 0; i < NS_ARRAY_LENGTH(nonDecodableExtensions); ++i) {
|
|
if (aExtension.LowerCaseEqualsASCII(nonDecodableExtensions[i].mFileExtension) &&
|
|
aEncodingType.LowerCaseEqualsASCII(nonDecodableExtensions[i].mMimeType)) {
|
|
*aApplyDecoding = PR_FALSE;
|
|
break;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsExternalHelperAppService::GetFileTokenForPath(const PRUnichar * aPlatformAppPath,
|
|
nsIFile ** aFile)
|
|
{
|
|
nsDependentString platformAppPath(aPlatformAppPath);
|
|
// First, check if we have an absolute path
|
|
nsILocalFile* localFile = nsnull;
|
|
nsresult rv = NS_NewLocalFile(platformAppPath, PR_TRUE, &localFile);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
*aFile = localFile;
|
|
PRBool exists;
|
|
if (NS_FAILED((*aFile)->Exists(&exists)) || !exists) {
|
|
NS_RELEASE(*aFile);
|
|
return NS_ERROR_FILE_NOT_FOUND;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// Second, check if file exists in mozilla program directory
|
|
rv = NS_GetSpecialDirectory(NS_XPCOM_CURRENT_PROCESS_DIR, aFile);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = (*aFile)->Append(platformAppPath);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
PRBool exists = PR_FALSE;
|
|
rv = (*aFile)->Exists(&exists);
|
|
if (NS_SUCCEEDED(rv) && exists)
|
|
return NS_OK;
|
|
}
|
|
NS_RELEASE(*aFile);
|
|
}
|
|
|
|
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// begin external protocol service default implementation...
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
NS_IMETHODIMP nsExternalHelperAppService::ExternalProtocolHandlerExists(const char * aProtocolScheme,
|
|
PRBool * aHandlerExists)
|
|
{
|
|
nsCOMPtr<nsIHandlerInfo> handlerInfo;
|
|
nsresult rv = GetProtocolHandlerInfo(nsDependentCString(aProtocolScheme),
|
|
getter_AddRefs(handlerInfo));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// See if we have any known possible handler apps for this
|
|
nsCOMPtr<nsIMutableArray> possibleHandlers;
|
|
handlerInfo->GetPossibleApplicationHandlers(getter_AddRefs(possibleHandlers));
|
|
|
|
PRUint32 length;
|
|
possibleHandlers->GetLength(&length);
|
|
if (length) {
|
|
*aHandlerExists = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
// if not, fall back on an os-based handler
|
|
return OSProtocolHandlerExists(aProtocolScheme, aHandlerExists);
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::IsExposedProtocol(const char * aProtocolScheme, PRBool * aResult)
|
|
{
|
|
// by default, no protocol is exposed. i.e., by default all link clicks must
|
|
// go through the external protocol service. most applications override this
|
|
// default behavior.
|
|
*aResult = PR_FALSE;
|
|
|
|
nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (prefs)
|
|
{
|
|
PRBool val;
|
|
nsresult rv;
|
|
|
|
// check the per protocol setting first. it always takes precidence.
|
|
// if not set, then use the global setting.
|
|
|
|
nsCAutoString name;
|
|
name = NS_LITERAL_CSTRING("network.protocol-handler.expose.")
|
|
+ nsDependentCString(aProtocolScheme);
|
|
rv = prefs->GetBoolPref(name.get(), &val);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
*aResult = val;
|
|
}
|
|
else
|
|
{
|
|
rv = prefs->GetBoolPref("network.protocol-handler.expose-all", &val);
|
|
if (NS_SUCCEEDED(rv) && val)
|
|
*aResult = PR_TRUE;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::LoadUrl(nsIURI * aURL)
|
|
{
|
|
return LoadURI(aURL, nsnull);
|
|
}
|
|
|
|
static const char kExternalProtocolPrefPrefix[] = "network.protocol-handler.external.";
|
|
static const char kExternalProtocolDefaultPref[] = "network.protocol-handler.external-default";
|
|
|
|
NS_IMETHODIMP
|
|
nsExternalHelperAppService::LoadURI(nsIURI *aURI,
|
|
nsIInterfaceRequestor *aWindowContext)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aURI);
|
|
|
|
nsCAutoString spec;
|
|
aURI->GetSpec(spec);
|
|
|
|
if (spec.Find("%00") != -1)
|
|
return NS_ERROR_MALFORMED_URI;
|
|
|
|
spec.ReplaceSubstring("\"", "%22");
|
|
spec.ReplaceSubstring("`", "%60");
|
|
|
|
nsCOMPtr<nsIIOService> ios(do_GetIOService());
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = ios->NewURI(spec, nsnull, nsnull, getter_AddRefs(uri));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCAutoString scheme;
|
|
uri->GetScheme(scheme);
|
|
if (scheme.IsEmpty())
|
|
return NS_OK; // must have a scheme
|
|
|
|
nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID));
|
|
if (!prefs)
|
|
return NS_OK; // deny if we can't check prefs
|
|
|
|
// Deny load if the prefs say to do so
|
|
nsCAutoString externalPref(kExternalProtocolPrefPrefix);
|
|
externalPref += scheme;
|
|
PRBool allowLoad = PR_FALSE;
|
|
rv = prefs->GetBoolPref(externalPref.get(), &allowLoad);
|
|
if (NS_FAILED(rv))
|
|
{
|
|
// no scheme-specific value, check the default
|
|
rv = prefs->GetBoolPref(kExternalProtocolDefaultPref, &allowLoad);
|
|
}
|
|
if (NS_FAILED(rv) || !allowLoad)
|
|
return NS_OK; // explicitly denied or missing default pref
|
|
|
|
|
|
nsCOMPtr<nsIHandlerInfo> handler;
|
|
rv = GetProtocolHandlerInfo(scheme, getter_AddRefs(handler));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsHandlerInfoAction preferredAction;
|
|
handler->GetPreferredAction(&preferredAction);
|
|
PRBool alwaysAsk = PR_TRUE;
|
|
handler->GetAlwaysAskBeforeHandling(&alwaysAsk);
|
|
|
|
// if we are not supposed to ask, and the preferred action is to use
|
|
// a helper app or the system default, we just launch the URI.
|
|
if (!alwaysAsk && (preferredAction == nsIHandlerInfo::useHelperApp ||
|
|
preferredAction == nsIHandlerInfo::useSystemDefault))
|
|
return handler->LaunchWithURI(uri, aWindowContext);
|
|
|
|
nsCOMPtr<nsIContentDispatchChooser> chooser =
|
|
do_CreateInstance("@mozilla.org/content-dispatch-chooser;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return chooser->Ask(handler, aWindowContext, uri,
|
|
nsIContentDispatchChooser::REASON_CANNOT_HANDLE);
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::GetApplicationDescription(const nsACString& aScheme, nsAString& _retval)
|
|
{
|
|
// this method should only be implemented by each OS specific implementation of this service.
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Methods related to deleting temporary files on exit
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::DeleteTemporaryFileOnExit(nsIFile * aTemporaryFile)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
PRBool isFile = PR_FALSE;
|
|
nsCOMPtr<nsILocalFile> localFile (do_QueryInterface(aTemporaryFile, &rv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// as a safety measure, make sure the nsIFile is really a file and not a directory object.
|
|
localFile->IsFile(&isFile);
|
|
if (!isFile) return NS_OK;
|
|
|
|
if (mInPrivateBrowsing)
|
|
mTemporaryPrivateFilesList.AppendObject(localFile);
|
|
else
|
|
mTemporaryFilesList.AppendObject(localFile);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsExternalHelperAppService::FixFilePermissions(nsILocalFile* aFile)
|
|
{
|
|
// This space intentionally left blank
|
|
}
|
|
|
|
void nsExternalHelperAppService::ExpungeTemporaryFilesHelper(nsCOMArray<nsILocalFile> &fileList)
|
|
{
|
|
PRInt32 numEntries = fileList.Count();
|
|
nsILocalFile* localFile;
|
|
for (PRInt32 index = 0; index < numEntries; index++)
|
|
{
|
|
localFile = fileList[index];
|
|
if (localFile) {
|
|
// First make the file writable, since the temp file is probably readonly.
|
|
localFile->SetPermissions(0600);
|
|
localFile->Remove(PR_FALSE);
|
|
}
|
|
}
|
|
|
|
fileList.Clear();
|
|
}
|
|
|
|
void nsExternalHelperAppService::ExpungeTemporaryFiles()
|
|
{
|
|
ExpungeTemporaryFilesHelper(mTemporaryFilesList);
|
|
}
|
|
|
|
void nsExternalHelperAppService::ExpungeTemporaryPrivateFiles()
|
|
{
|
|
ExpungeTemporaryFilesHelper(mTemporaryPrivateFilesList);
|
|
}
|
|
|
|
static const char kExternalWarningPrefPrefix[] =
|
|
"network.protocol-handler.warn-external.";
|
|
static const char kExternalWarningDefaultPref[] =
|
|
"network.protocol-handler.warn-external-default";
|
|
|
|
NS_IMETHODIMP
|
|
nsExternalHelperAppService::GetProtocolHandlerInfo(const nsACString &aScheme,
|
|
nsIHandlerInfo **aHandlerInfo)
|
|
{
|
|
// XXX enterprise customers should be able to turn this support off with a
|
|
// single master pref (maybe use one of the "exposed" prefs here?)
|
|
|
|
PRBool exists;
|
|
nsresult rv = GetProtocolHandlerInfoFromOS(aScheme, &exists, aHandlerInfo);
|
|
if (NS_FAILED(rv)) {
|
|
// Either it knows nothing, or we ran out of memory
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsIHandlerService> handlerSvc = do_GetService(NS_HANDLERSERVICE_CONTRACTID);
|
|
if (handlerSvc) {
|
|
PRBool hasHandler = PR_FALSE;
|
|
(void) handlerSvc->Exists(*aHandlerInfo, &hasHandler);
|
|
if (hasHandler) {
|
|
rv = handlerSvc->FillHandlerInfo(*aHandlerInfo, EmptyCString());
|
|
if (NS_SUCCEEDED(rv))
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
return SetProtocolHandlerDefaults(*aHandlerInfo, exists);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsExternalHelperAppService::GetProtocolHandlerInfoFromOS(const nsACString &aScheme,
|
|
PRBool *found,
|
|
nsIHandlerInfo **aHandlerInfo)
|
|
{
|
|
// intended to be implemented by the subclass
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsExternalHelperAppService::SetProtocolHandlerDefaults(nsIHandlerInfo *aHandlerInfo,
|
|
PRBool aOSHandlerExists)
|
|
{
|
|
// this type isn't in our database, so we've only got an OS default handler,
|
|
// if one exists
|
|
|
|
if (aOSHandlerExists) {
|
|
// we've got a default, so use it
|
|
aHandlerInfo->SetPreferredAction(nsIHandlerInfo::useSystemDefault);
|
|
|
|
// whether or not to ask the user depends on the warning preference
|
|
nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID));
|
|
if (!prefs)
|
|
return NS_OK; // deny if we can't check prefs
|
|
|
|
nsCAutoString scheme;
|
|
aHandlerInfo->GetType(scheme);
|
|
|
|
nsCAutoString warningPref(kExternalWarningPrefPrefix);
|
|
warningPref += scheme;
|
|
PRBool warn = PR_TRUE;
|
|
nsresult rv = prefs->GetBoolPref(warningPref.get(), &warn);
|
|
if (NS_FAILED(rv)) {
|
|
// no scheme-specific value, check the default
|
|
prefs->GetBoolPref(kExternalWarningDefaultPref, &warn);
|
|
}
|
|
aHandlerInfo->SetAlwaysAskBeforeHandling(warn);
|
|
} else {
|
|
// If no OS default existed, we set the preferred action to alwaysAsk.
|
|
// This really means not initialized (i.e. there's no available handler)
|
|
// to all the code...
|
|
aHandlerInfo->SetPreferredAction(nsIHandlerInfo::alwaysAsk);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// XPCOM profile change observer
|
|
NS_IMETHODIMP
|
|
nsExternalHelperAppService::Observe(nsISupports *aSubject, const char *aTopic, const PRUnichar *someData )
|
|
{
|
|
if (!strcmp(aTopic, "profile-before-change")) {
|
|
ExpungeTemporaryFiles();
|
|
} else if (!strcmp(aTopic, NS_PRIVATE_BROWSING_SWITCH_TOPIC)) {
|
|
if (NS_LITERAL_STRING(NS_PRIVATE_BROWSING_ENTER).Equals(someData))
|
|
mInPrivateBrowsing = PR_TRUE;
|
|
else if (NS_LITERAL_STRING(NS_PRIVATE_BROWSING_LEAVE).Equals(someData)) {
|
|
mInPrivateBrowsing = PR_FALSE;
|
|
ExpungeTemporaryPrivateFiles();
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// begin external app handler implementation
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
NS_IMPL_THREADSAFE_ADDREF(nsExternalAppHandler)
|
|
NS_IMPL_THREADSAFE_RELEASE(nsExternalAppHandler)
|
|
|
|
NS_INTERFACE_MAP_BEGIN(nsExternalAppHandler)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIStreamListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
|
|
NS_INTERFACE_MAP_ENTRY(nsIHelperAppLauncher)
|
|
NS_INTERFACE_MAP_ENTRY(nsICancelable)
|
|
NS_INTERFACE_MAP_ENTRY(nsITimerCallback)
|
|
NS_INTERFACE_MAP_END_THREADSAFE
|
|
|
|
nsExternalAppHandler::nsExternalAppHandler(nsIMIMEInfo * aMIMEInfo,
|
|
const nsCSubstring& aTempFileExtension,
|
|
nsIInterfaceRequestor* aWindowContext,
|
|
const nsAString& aSuggestedFilename,
|
|
PRUint32 aReason, PRBool aForceSave)
|
|
: mMimeInfo(aMIMEInfo)
|
|
, mWindowContext(aWindowContext)
|
|
, mWindowToClose(nsnull)
|
|
, mSuggestedFileName(aSuggestedFilename)
|
|
, mForceSave(aForceSave)
|
|
, mCanceled(PR_FALSE)
|
|
, mShouldCloseWindow(PR_FALSE)
|
|
, mReceivedDispositionInfo(PR_FALSE)
|
|
, mStopRequestIssued(PR_FALSE)
|
|
, mProgressListenerInitialized(PR_FALSE)
|
|
, mReason(aReason)
|
|
, mContentLength(-1)
|
|
, mProgress(0)
|
|
, mRequest(nsnull)
|
|
{
|
|
|
|
// make sure the extention includes the '.'
|
|
if (!aTempFileExtension.IsEmpty() && aTempFileExtension.First() != '.')
|
|
mTempFileExtension = PRUnichar('.');
|
|
AppendUTF8toUTF16(aTempFileExtension, mTempFileExtension);
|
|
|
|
// replace platform specific path separator and illegal characters to avoid any confusion
|
|
mSuggestedFileName.ReplaceChar(FILE_PATH_SEPARATOR FILE_ILLEGAL_CHARACTERS, '_');
|
|
mTempFileExtension.ReplaceChar(FILE_PATH_SEPARATOR FILE_ILLEGAL_CHARACTERS, '_');
|
|
|
|
// Remove unsafe bidi characters which might have spoofing implications (bug 511521).
|
|
const PRUnichar unsafeBidiCharacters[] = {
|
|
PRUnichar(0x202a), // Left-to-Right Embedding
|
|
PRUnichar(0x202b), // Right-to-Left Embedding
|
|
PRUnichar(0x202c), // Pop Directional Formatting
|
|
PRUnichar(0x202d), // Left-to-Right Override
|
|
PRUnichar(0x202e) // Right-to-Left Override
|
|
};
|
|
for (int i = 0; i < NS_ARRAY_LENGTH(unsafeBidiCharacters); ++i) {
|
|
mSuggestedFileName.ReplaceChar(unsafeBidiCharacters[i], '_');
|
|
mTempFileExtension.ReplaceChar(unsafeBidiCharacters[i], '_');
|
|
}
|
|
|
|
// Make sure extension is correct.
|
|
EnsureSuggestedFileName();
|
|
|
|
gExtProtSvc->AddRef();
|
|
}
|
|
|
|
nsExternalAppHandler::~nsExternalAppHandler()
|
|
{
|
|
// Not using NS_RELEASE, since we don't want to set gExtProtSvc to NULL
|
|
gExtProtSvc->Release();
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::SetWebProgressListener(nsIWebProgressListener2 * aWebProgressListener)
|
|
{
|
|
// this call back means we've successfully brought up the
|
|
// progress window so set the appropriate flag, even though
|
|
// aWebProgressListener might be null
|
|
|
|
if (mReceivedDispositionInfo)
|
|
mProgressListenerInitialized = PR_TRUE;
|
|
|
|
// Go ahead and register the progress listener....
|
|
mWebProgressListener = aWebProgressListener;
|
|
|
|
// while we were bringing up the progress dialog, we actually finished processing the
|
|
// url. If that's the case then mStopRequestIssued will be true. We need to execute the
|
|
// operation since we are actually done now.
|
|
if (mStopRequestIssued && aWebProgressListener)
|
|
{
|
|
return ExecuteDesiredAction();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::GetTargetFile(nsIFile** aTarget)
|
|
{
|
|
if (mFinalFileDestination)
|
|
*aTarget = mFinalFileDestination;
|
|
else
|
|
*aTarget = mTempFile;
|
|
|
|
NS_IF_ADDREF(*aTarget);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::GetTargetFileIsExecutable(PRBool *aExec)
|
|
{
|
|
// Use the real target if it's been set
|
|
if (mFinalFileDestination)
|
|
return mFinalFileDestination->IsExecutable(aExec);
|
|
|
|
// Otherwise, use the stored executable-ness of the temporary
|
|
*aExec = mTempFileIsExecutable;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::GetTimeDownloadStarted(PRTime* aTime)
|
|
{
|
|
*aTime = mTimeDownloadStarted;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::GetContentLength(PRInt64 *aContentLength)
|
|
{
|
|
*aContentLength = mContentLength;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::CloseProgressWindow()
|
|
{
|
|
// release extra state...
|
|
mWebProgressListener = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsExternalAppHandler::RetargetLoadNotifications(nsIRequest *request)
|
|
{
|
|
// we are going to run the downloading of the helper app in our own little docloader / load group context.
|
|
// so go ahead and force the creation of a load group and doc loader for us to use...
|
|
nsCOMPtr<nsIChannel> aChannel = do_QueryInterface(request);
|
|
if (!aChannel)
|
|
return;
|
|
|
|
// we need to store off the original (pre redirect!) channel that initiated the load. We do
|
|
// this so later on, we can pass any refresh urls associated with the original channel back to the
|
|
// window context which started the whole process. More comments about that are listed below....
|
|
// HACK ALERT: it's pretty bogus that we are getting the document channel from the doc loader.
|
|
// ideally we should be able to just use mChannel (the channel we are extracting content from) or
|
|
// the default load channel associated with the original load group. Unfortunately because
|
|
// a redirect may have occurred, the doc loader is the only one with a ptr to the original channel
|
|
// which is what we really want....
|
|
|
|
// Note that we need to do this before removing aChannel from the loadgroup,
|
|
// since that would mess with the original channel on the loader.
|
|
nsCOMPtr<nsIDocumentLoader> origContextLoader =
|
|
do_GetInterface(mWindowContext);
|
|
if (origContextLoader)
|
|
origContextLoader->GetDocumentChannel(getter_AddRefs(mOriginalChannel));
|
|
|
|
nsCOMPtr<nsILoadGroup> oldLoadGroup;
|
|
aChannel->GetLoadGroup(getter_AddRefs(oldLoadGroup));
|
|
|
|
if(oldLoadGroup)
|
|
oldLoadGroup->RemoveRequest(request, nsnull, NS_BINDING_RETARGETED);
|
|
|
|
aChannel->SetLoadGroup(nsnull);
|
|
aChannel->SetNotificationCallbacks(nsnull);
|
|
|
|
}
|
|
|
|
/**
|
|
* Make mTempFileExtension contain an extension exactly when its previous value
|
|
* is different from mSuggestedFileName's extension, so that it can be appended
|
|
* to mSuggestedFileName and form a valid, useful leaf name.
|
|
* This is required so that the (renamed) temporary file has the correct extension
|
|
* after downloading to make sure the OS will launch the application corresponding
|
|
* to the MIME type (which was used to calculate mTempFileExtension). This prevents
|
|
* a cgi-script named foobar.exe that returns application/zip from being named
|
|
* foobar.exe and executed as an executable file. It also blocks content that
|
|
* a web site might provide with a content-disposition header indicating
|
|
* filename="foobar.exe" from being downloaded to a file with extension .exe
|
|
* and executed.
|
|
*/
|
|
void nsExternalAppHandler::EnsureSuggestedFileName()
|
|
{
|
|
// Make sure there is a mTempFileExtension (not "" or ".").
|
|
// Remember that mTempFileExtension will always have the leading "."
|
|
// (the check for empty is just to be safe).
|
|
if (mTempFileExtension.Length() > 1)
|
|
{
|
|
// Get mSuggestedFileName's current extension.
|
|
nsAutoString fileExt;
|
|
PRInt32 pos = mSuggestedFileName.RFindChar('.');
|
|
if (pos != kNotFound)
|
|
mSuggestedFileName.Right(fileExt, mSuggestedFileName.Length() - pos);
|
|
|
|
// Now, compare fileExt to mTempFileExtension.
|
|
if (fileExt.Equals(mTempFileExtension, nsCaseInsensitiveStringComparator()))
|
|
{
|
|
// Matches -> mTempFileExtension can be empty
|
|
mTempFileExtension.Truncate();
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult nsExternalAppHandler::SetUpTempFile(nsIChannel * aChannel)
|
|
{
|
|
// First we need to try to get the destination directory for the temporary
|
|
// file.
|
|
nsresult rv = GetDownloadDirectory(getter_AddRefs(mTempFile));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// At this point, we do not have a filename for the temp file. For security
|
|
// purposes, this cannot be predictable, so we must use a cryptographic
|
|
// quality PRNG to generate one.
|
|
// We will request raw random bytes, and transform that to a base64 string,
|
|
// as all characters from the base64 set are acceptable for filenames. For
|
|
// each three bytes of random data, we will get four bytes of ASCII. Request
|
|
// a bit more, to be safe, and truncate to the length we want in the end.
|
|
|
|
const PRUint32 wantedFileNameLength = 8;
|
|
const PRUint32 requiredBytesLength =
|
|
static_cast<PRUint32>((wantedFileNameLength + 1) / 4 * 3);
|
|
|
|
nsCOMPtr<nsIRandomGenerator> rg =
|
|
do_GetService("@mozilla.org/security/random-generator;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PRUint8 *buffer;
|
|
rv = rg->GenerateRandomBytes(requiredBytesLength, &buffer);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
char *b64 = PL_Base64Encode(reinterpret_cast<const char *>(buffer),
|
|
requiredBytesLength, nsnull);
|
|
NS_Free(buffer);
|
|
buffer = nsnull;
|
|
|
|
if (!b64)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
NS_ASSERTION(strlen(b64) >= wantedFileNameLength,
|
|
"not enough bytes produced for conversion!");
|
|
|
|
nsCAutoString tempLeafName(b64, wantedFileNameLength);
|
|
PR_Free(b64);
|
|
b64 = nsnull;
|
|
|
|
// Base64 characters are alphanumeric (a-zA-Z0-9) and '+' and '/', so we need
|
|
// to replace illegal characters -- notably '/'
|
|
tempLeafName.ReplaceChar(FILE_PATH_SEPARATOR FILE_ILLEGAL_CHARACTERS, '_');
|
|
|
|
// now append our extension.
|
|
nsCAutoString ext;
|
|
mMimeInfo->GetPrimaryExtension(ext);
|
|
if (!ext.IsEmpty()) {
|
|
ext.ReplaceChar(FILE_PATH_SEPARATOR FILE_ILLEGAL_CHARACTERS, '_');
|
|
if (ext.First() != '.')
|
|
tempLeafName.Append('.');
|
|
tempLeafName.Append(ext);
|
|
}
|
|
|
|
#ifdef XP_WIN
|
|
// On windows, we need to temporarily create a dummy file with the correct
|
|
// file extension to determine the executable-ness, so do this before adding
|
|
// the extra .part extension.
|
|
nsCOMPtr<nsIFile> dummyFile;
|
|
rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(dummyFile));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Set the file name without .part
|
|
rv = dummyFile->Append(NS_ConvertUTF8toUTF16(tempLeafName));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = dummyFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Store executable-ness then delete
|
|
dummyFile->IsExecutable(&mTempFileIsExecutable);
|
|
dummyFile->Remove(PR_FALSE);
|
|
#endif
|
|
|
|
// Add an additional .part to prevent the OS from running this file in the
|
|
// default application.
|
|
tempLeafName.Append(NS_LITERAL_CSTRING(".part"));
|
|
|
|
rv = mTempFile->Append(NS_ConvertUTF8toUTF16(tempLeafName));
|
|
// make this file unique!!!
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = mTempFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
#ifndef XP_WIN
|
|
// On other platforms, the file permission bits are used, so we can just call
|
|
// IsExecutable
|
|
mTempFile->IsExecutable(&mTempFileIsExecutable);
|
|
#endif
|
|
|
|
nsCOMPtr<nsIOutputStream> outputStream;
|
|
rv = NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), mTempFile,
|
|
PR_WRONLY | PR_CREATE_FILE, 0600);
|
|
if (NS_FAILED(rv)) {
|
|
mTempFile->Remove(PR_FALSE);
|
|
return rv;
|
|
}
|
|
|
|
mOutStream = NS_BufferOutputStream(outputStream, BUFFERED_OUTPUT_SIZE);
|
|
|
|
#if defined(XP_MACOSX) && !defined(__LP64__)
|
|
nsCAutoString contentType;
|
|
mMimeInfo->GetMIMEType(contentType);
|
|
if (contentType.LowerCaseEqualsLiteral(APPLICATION_APPLEFILE) ||
|
|
contentType.LowerCaseEqualsLiteral(MULTIPART_APPLEDOUBLE))
|
|
{
|
|
nsCOMPtr<nsIAppleFileDecoder> appleFileDecoder = do_CreateInstance(NS_IAPPLEFILEDECODER_CONTRACTID, &rv);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
rv = appleFileDecoder->Initialize(mOutStream, mTempFile);
|
|
if (NS_SUCCEEDED(rv))
|
|
mOutStream = do_QueryInterface(appleFileDecoder, &rv);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::OnStartRequest(nsIRequest *request, nsISupports * aCtxt)
|
|
{
|
|
NS_PRECONDITION(request, "OnStartRequest without request?");
|
|
|
|
// Set mTimeDownloadStarted here as the download has already started and
|
|
// we want to record the start time before showing the filepicker.
|
|
mTimeDownloadStarted = PR_Now();
|
|
|
|
mRequest = request;
|
|
|
|
nsCOMPtr<nsIChannel> aChannel = do_QueryInterface(request);
|
|
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsIFileChannel> fileChan(do_QueryInterface(request));
|
|
mIsFileChannel = fileChan != nsnull;
|
|
|
|
// Get content length
|
|
nsCOMPtr<nsIPropertyBag2> props(do_QueryInterface(request, &rv));
|
|
if (props) {
|
|
rv = props->GetPropertyAsInt64(NS_CHANNEL_PROP_CONTENT_LENGTH,
|
|
&mContentLength.mValue);
|
|
}
|
|
// If that failed, ask the channel
|
|
if (NS_FAILED(rv) && aChannel) {
|
|
PRInt32 len;
|
|
aChannel->GetContentLength(&len);
|
|
mContentLength = len;
|
|
}
|
|
|
|
// Determine whether a new window was opened specifically for this request
|
|
if (props) {
|
|
PRBool tmp = PR_FALSE;
|
|
props->GetPropertyAsBool(NS_LITERAL_STRING("docshell.newWindowTarget"),
|
|
&tmp);
|
|
mShouldCloseWindow = tmp;
|
|
}
|
|
|
|
// Now get the URI
|
|
if (aChannel)
|
|
{
|
|
aChannel->GetURI(getter_AddRefs(mSourceUrl));
|
|
}
|
|
|
|
rv = SetUpTempFile(aChannel);
|
|
if (NS_FAILED(rv)) {
|
|
mCanceled = PR_TRUE;
|
|
request->Cancel(rv);
|
|
nsAutoString path;
|
|
if (mTempFile)
|
|
mTempFile->GetPath(path);
|
|
SendStatusChange(kWriteError, rv, request, path);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Extract mime type for later use below.
|
|
nsCAutoString MIMEType;
|
|
mMimeInfo->GetMIMEType(MIMEType);
|
|
|
|
// retarget all load notifications to our docloader instead of the original window's docloader...
|
|
RetargetLoadNotifications(request);
|
|
|
|
// Check to see if there is a refresh header on the original channel.
|
|
if (mOriginalChannel) {
|
|
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(mOriginalChannel));
|
|
if (httpChannel) {
|
|
nsCAutoString refreshHeader;
|
|
httpChannel->GetResponseHeader(NS_LITERAL_CSTRING("refresh"),
|
|
refreshHeader);
|
|
if (!refreshHeader.IsEmpty()) {
|
|
mShouldCloseWindow = PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Close the underlying DOMWindow if there is no refresh header
|
|
// and it was opened specifically for the download
|
|
MaybeCloseWindow();
|
|
|
|
nsCOMPtr<nsIEncodedChannel> encChannel = do_QueryInterface( aChannel );
|
|
if (encChannel)
|
|
{
|
|
// Turn off content encoding conversions if needed
|
|
PRBool applyConversion = PR_TRUE;
|
|
|
|
nsCOMPtr<nsIURL> sourceURL(do_QueryInterface(mSourceUrl));
|
|
if (sourceURL)
|
|
{
|
|
nsCAutoString extension;
|
|
sourceURL->GetFileExtension(extension);
|
|
if (!extension.IsEmpty())
|
|
{
|
|
nsCOMPtr<nsIUTF8StringEnumerator> encEnum;
|
|
encChannel->GetContentEncodings(getter_AddRefs(encEnum));
|
|
if (encEnum)
|
|
{
|
|
PRBool hasMore;
|
|
rv = encEnum->HasMore(&hasMore);
|
|
if (NS_SUCCEEDED(rv) && hasMore)
|
|
{
|
|
nsCAutoString encType;
|
|
rv = encEnum->GetNext(encType);
|
|
if (NS_SUCCEEDED(rv) && !encType.IsEmpty())
|
|
{
|
|
NS_ASSERTION(gExtProtSvc, "Where did the service go?");
|
|
gExtProtSvc->ApplyDecodingForExtension(extension, encType,
|
|
&applyConversion);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
encChannel->SetApplyConversion( applyConversion );
|
|
}
|
|
|
|
// now that the temp file is set up, find out if we need to invoke a dialog
|
|
// asking the user what they want us to do with this content...
|
|
|
|
// We can get here for three reasons: "can't handle", "sniffed type", or
|
|
// "server sent content-disposition:attachment". In the first case we want
|
|
// to honor the user's "always ask" pref; in the other two cases we want to
|
|
// honor it only if the default action is "save". Opening attachments in
|
|
// helper apps by default breaks some websites (especially if the attachment
|
|
// is one part of a multipart document). Opening sniffed content in helper
|
|
// apps by default introduces security holes that we'd rather not have.
|
|
|
|
// So let's find out whether the user wants to be prompted. If he does not,
|
|
// check mReason and the preferred action to see what we should do.
|
|
|
|
PRBool alwaysAsk = PR_TRUE;
|
|
mMimeInfo->GetAlwaysAskBeforeHandling(&alwaysAsk);
|
|
if (alwaysAsk)
|
|
{
|
|
// But we *don't* ask if this mimeInfo didn't come from
|
|
// our user configuration datastore and the user has said
|
|
// at some point in the distant past that they don't
|
|
// want to be asked. The latter fact would have been
|
|
// stored in pref strings back in the old days.
|
|
NS_ASSERTION(gExtProtSvc, "Service gone away!?");
|
|
|
|
PRBool mimeTypeIsInDatastore = PR_FALSE;
|
|
nsCOMPtr<nsIHandlerService> handlerSvc = do_GetService(NS_HANDLERSERVICE_CONTRACTID);
|
|
if (handlerSvc)
|
|
handlerSvc->Exists(mMimeInfo, &mimeTypeIsInDatastore);
|
|
if (!handlerSvc || !mimeTypeIsInDatastore)
|
|
{
|
|
if (!GetNeverAskFlagFromPref(NEVER_ASK_FOR_SAVE_TO_DISK_PREF, MIMEType.get()))
|
|
{
|
|
// Don't need to ask after all.
|
|
alwaysAsk = PR_FALSE;
|
|
// Make sure action matches pref (save to disk).
|
|
mMimeInfo->SetPreferredAction(nsIMIMEInfo::saveToDisk);
|
|
}
|
|
else if (!GetNeverAskFlagFromPref(NEVER_ASK_FOR_OPEN_FILE_PREF, MIMEType.get()))
|
|
{
|
|
// Don't need to ask after all.
|
|
alwaysAsk = PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
PRInt32 action = nsIMIMEInfo::saveToDisk;
|
|
mMimeInfo->GetPreferredAction( &action );
|
|
|
|
// OK, now check why we're here
|
|
if (!alwaysAsk && mReason != nsIHelperAppLauncherDialog::REASON_CANTHANDLE) {
|
|
// Force asking if we're not saving. See comment back when we fetched the
|
|
// alwaysAsk boolean for details.
|
|
alwaysAsk = (action != nsIMIMEInfo::saveToDisk);
|
|
}
|
|
|
|
// if we were told that we _must_ save to disk without asking, all the stuff
|
|
// before this is irrelevant; override it
|
|
if (mForceSave) {
|
|
alwaysAsk = PR_FALSE;
|
|
action = nsIMIMEInfo::saveToDisk;
|
|
}
|
|
|
|
if (alwaysAsk)
|
|
{
|
|
// do this first! make sure we don't try to take an action until the user tells us what they want to do
|
|
// with it...
|
|
mReceivedDispositionInfo = PR_FALSE;
|
|
|
|
// invoke the dialog!!!!! use mWindowContext as the window context parameter for the dialog request
|
|
mDialog = do_CreateInstance( NS_IHELPERAPPLAUNCHERDLG_CONTRACTID, &rv );
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// this will create a reference cycle (the dialog holds a reference to us as
|
|
// nsIHelperAppLauncher), which will be broken in Cancel or
|
|
// CreateProgressListener.
|
|
rv = mDialog->Show( this, mWindowContext, mReason );
|
|
|
|
// what do we do if the dialog failed? I guess we should call Cancel and abort the load....
|
|
}
|
|
else
|
|
{
|
|
mReceivedDispositionInfo = PR_TRUE; // no need to wait for a response from the user
|
|
|
|
// We need to do the save/open immediately, then.
|
|
#ifdef XP_WIN
|
|
/* We need to see whether the file we've got here could be
|
|
* executable. If it could, we had better not try to open it!
|
|
* We can skip this check, though, if we have a setting to open in a
|
|
* helper app.
|
|
* This code mirrors the code in
|
|
* nsExternalAppHandler::LaunchWithApplication so that what we
|
|
* test here is as close as possible to what will really be
|
|
* happening if we decide to execute
|
|
*/
|
|
nsCOMPtr<nsIHandlerApp> prefApp;
|
|
mMimeInfo->GetPreferredApplicationHandler(getter_AddRefs(prefApp));
|
|
if (action != nsIMIMEInfo::useHelperApp || !prefApp) {
|
|
nsCOMPtr<nsIFile> fileToTest;
|
|
GetTargetFile(getter_AddRefs(fileToTest));
|
|
if (fileToTest) {
|
|
PRBool isExecutable;
|
|
rv = fileToTest->IsExecutable(&isExecutable);
|
|
if (NS_FAILED(rv) || isExecutable) { // checking NS_FAILED, because paranoia is good
|
|
action = nsIMIMEInfo::saveToDisk;
|
|
}
|
|
} else { // Paranoia is good here too, though this really should not happen
|
|
NS_WARNING("GetDownloadInfo returned a null file after the temp file has been set up! ");
|
|
action = nsIMIMEInfo::saveToDisk;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
if (action == nsIMIMEInfo::useHelperApp ||
|
|
action == nsIMIMEInfo::useSystemDefault)
|
|
{
|
|
rv = LaunchWithApplication(nsnull, PR_FALSE);
|
|
}
|
|
else // Various unknown actions go here too
|
|
{
|
|
rv = SaveToDisk(nsnull, PR_FALSE);
|
|
}
|
|
}
|
|
|
|
// Now let's add the download to history
|
|
nsCOMPtr<nsIDownloadHistory> dh(do_GetService(NS_DOWNLOADHISTORY_CONTRACTID));
|
|
if (dh) {
|
|
nsCOMPtr<nsIURI> referrer;
|
|
if (aChannel)
|
|
NS_GetReferrerFromChannel(aChannel, getter_AddRefs(referrer));
|
|
dh->AddDownload(mSourceUrl, referrer, mTimeDownloadStarted);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Convert error info into proper message text and send OnStatusChange notification
|
|
// to the web progress listener.
|
|
void nsExternalAppHandler::SendStatusChange(ErrorType type, nsresult rv, nsIRequest *aRequest, const nsAFlatString &path)
|
|
{
|
|
nsAutoString msgId;
|
|
switch(rv)
|
|
{
|
|
case NS_ERROR_OUT_OF_MEMORY:
|
|
// No memory
|
|
msgId.AssignLiteral("noMemory");
|
|
break;
|
|
|
|
case NS_ERROR_FILE_DISK_FULL:
|
|
case NS_ERROR_FILE_NO_DEVICE_SPACE:
|
|
// Out of space on target volume.
|
|
msgId.AssignLiteral("diskFull");
|
|
break;
|
|
|
|
case NS_ERROR_FILE_READ_ONLY:
|
|
// Attempt to write to read/only file.
|
|
msgId.AssignLiteral("readOnly");
|
|
break;
|
|
|
|
case NS_ERROR_FILE_ACCESS_DENIED:
|
|
if (type == kWriteError) {
|
|
// Attempt to write without sufficient permissions.
|
|
msgId.AssignLiteral("accessError");
|
|
}
|
|
else
|
|
{
|
|
msgId.AssignLiteral("launchError");
|
|
}
|
|
break;
|
|
|
|
case NS_ERROR_FILE_NOT_FOUND:
|
|
case NS_ERROR_FILE_TARGET_DOES_NOT_EXIST:
|
|
case NS_ERROR_FILE_UNRECOGNIZED_PATH:
|
|
// Helper app not found, let's verify this happened on launch
|
|
if (type == kLaunchError) {
|
|
msgId.AssignLiteral("helperAppNotFound");
|
|
break;
|
|
}
|
|
// fall through
|
|
|
|
default:
|
|
// Generic read/write/launch error message.
|
|
switch(type)
|
|
{
|
|
case kReadError:
|
|
msgId.AssignLiteral("readError");
|
|
break;
|
|
case kWriteError:
|
|
msgId.AssignLiteral("writeError");
|
|
break;
|
|
case kLaunchError:
|
|
msgId.AssignLiteral("launchError");
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
PR_LOG(nsExternalHelperAppService::mLog, PR_LOG_ERROR,
|
|
("Error: %s, type=%i, listener=0x%p, rv=0x%08X\n",
|
|
NS_LossyConvertUTF16toASCII(msgId).get(), type, mWebProgressListener.get(), rv));
|
|
PR_LOG(nsExternalHelperAppService::mLog, PR_LOG_ERROR,
|
|
(" path='%s'\n", NS_ConvertUTF16toUTF8(path).get()));
|
|
|
|
// Get properties file bundle and extract status string.
|
|
nsCOMPtr<nsIStringBundleService> s = do_GetService(NS_STRINGBUNDLE_CONTRACTID);
|
|
if (s)
|
|
{
|
|
nsCOMPtr<nsIStringBundle> bundle;
|
|
if (NS_SUCCEEDED(s->CreateBundle("chrome://global/locale/nsWebBrowserPersist.properties", getter_AddRefs(bundle))))
|
|
{
|
|
nsXPIDLString msgText;
|
|
const PRUnichar *strings[] = { path.get() };
|
|
if(NS_SUCCEEDED(bundle->FormatStringFromName(msgId.get(), strings, 1, getter_Copies(msgText))))
|
|
{
|
|
if (mWebProgressListener)
|
|
{
|
|
// We have a listener, let it handle the error.
|
|
mWebProgressListener->OnStatusChange(nsnull, (type == kReadError) ? aRequest : nsnull, rv, msgText);
|
|
}
|
|
else
|
|
{
|
|
// We don't have a listener. Simply show the alert ourselves.
|
|
nsCOMPtr<nsIPrompt> prompter(do_GetInterface(mWindowContext));
|
|
nsXPIDLString title;
|
|
bundle->FormatStringFromName(NS_LITERAL_STRING("title").get(),
|
|
strings,
|
|
1,
|
|
getter_Copies(title));
|
|
if (prompter)
|
|
{
|
|
prompter->Alert(title, msgText);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::OnDataAvailable(nsIRequest *request, nsISupports * aCtxt,
|
|
nsIInputStream * inStr, PRUint32 sourceOffset, PRUint32 count)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
// first, check to see if we've been canceled....
|
|
if (mCanceled) // then go cancel our underlying channel too
|
|
return request->Cancel(NS_BINDING_ABORTED);
|
|
|
|
// read the data out of the stream and write it to the temp file.
|
|
if (mOutStream && count > 0)
|
|
{
|
|
PRUint32 numBytesRead = 0;
|
|
PRUint32 numBytesWritten = 0;
|
|
mProgress += count;
|
|
PRBool readError = PR_TRUE;
|
|
while (NS_SUCCEEDED(rv) && count > 0) // while we still have bytes to copy...
|
|
{
|
|
readError = PR_TRUE;
|
|
rv = inStr->Read(mDataBuffer, PR_MIN(count, DATA_BUFFER_SIZE - 1), &numBytesRead);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
if (count >= numBytesRead)
|
|
count -= numBytesRead; // subtract off the number of bytes we just read
|
|
else
|
|
count = 0;
|
|
readError = PR_FALSE;
|
|
// Write out the data until something goes wrong, or, it is
|
|
// all written. We loop because for some errors (e.g., disk
|
|
// full), we get NS_OK with some bytes written, then an error.
|
|
// So, we want to write again in that case to get the actual
|
|
// error code.
|
|
const char *bufPtr = mDataBuffer; // Where to write from.
|
|
while (NS_SUCCEEDED(rv) && numBytesRead)
|
|
{
|
|
numBytesWritten = 0;
|
|
rv = mOutStream->Write(bufPtr, numBytesRead, &numBytesWritten);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
numBytesRead -= numBytesWritten;
|
|
bufPtr += numBytesWritten;
|
|
// Force an error if (for some reason) we get NS_OK but
|
|
// no bytes written.
|
|
if (!numBytesWritten)
|
|
{
|
|
rv = NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
// Send progress notification.
|
|
if (mWebProgressListener)
|
|
{
|
|
mWebProgressListener->OnProgressChange64(nsnull, request, mProgress, mContentLength, mProgress, mContentLength);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// An error occurred, notify listener.
|
|
nsAutoString tempFilePath;
|
|
if (mTempFile)
|
|
mTempFile->GetPath(tempFilePath);
|
|
SendStatusChange(readError ? kReadError : kWriteError, rv, request, tempFilePath);
|
|
|
|
// Cancel the download.
|
|
Cancel(rv);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::OnStopRequest(nsIRequest *request, nsISupports *aCtxt,
|
|
nsresult aStatus)
|
|
{
|
|
mStopRequestIssued = PR_TRUE;
|
|
mRequest = nsnull;
|
|
// Cancel if the request did not complete successfully.
|
|
if (!mCanceled && NS_FAILED(aStatus))
|
|
{
|
|
// Send error notification.
|
|
nsAutoString tempFilePath;
|
|
if (mTempFile)
|
|
mTempFile->GetPath(tempFilePath);
|
|
SendStatusChange( kReadError, aStatus, request, tempFilePath );
|
|
|
|
Cancel(aStatus);
|
|
}
|
|
|
|
// first, check to see if we've been canceled....
|
|
if (mCanceled)
|
|
return NS_OK;
|
|
|
|
// close the stream...
|
|
if (mOutStream)
|
|
{
|
|
mOutStream->Close();
|
|
mOutStream = nsnull;
|
|
}
|
|
|
|
// Do what the user asked for
|
|
ExecuteDesiredAction();
|
|
|
|
// At this point, the channel should still own us. So releasing the reference
|
|
// to us in the nsITransfer should be ok.
|
|
// This nsITransfer object holds a reference to us (we are its observer), so
|
|
// we need to release the reference to break a reference cycle (and therefore
|
|
// to prevent leaking)
|
|
mWebProgressListener = nsnull;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsExternalAppHandler::ExecuteDesiredAction()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (mProgressListenerInitialized && !mCanceled)
|
|
{
|
|
nsHandlerInfoAction action = nsIMIMEInfo::saveToDisk;
|
|
mMimeInfo->GetPreferredAction(&action);
|
|
if (action == nsIMIMEInfo::useHelperApp ||
|
|
action == nsIMIMEInfo::useSystemDefault)
|
|
{
|
|
// Make sure the suggested name is unique since in this case we don't
|
|
// have a file name that was guaranteed to be unique by going through
|
|
// the File Save dialog
|
|
rv = mFinalFileDestination->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
// Source and dest dirs should be == so this should just do a rename
|
|
rv = MoveFile(mFinalFileDestination);
|
|
if (NS_SUCCEEDED(rv))
|
|
rv = OpenWithApplication();
|
|
}
|
|
else
|
|
{
|
|
// Cancel the download and report an error. We do not want to end up in
|
|
// a state where it appears that we have a normal download that is
|
|
// pointing to a file that we did not actually create.
|
|
nsAutoString path;
|
|
mTempFile->GetPath(path);
|
|
SendStatusChange(kWriteError, rv, nsnull, path);
|
|
Cancel(rv);
|
|
|
|
// We still need to notify if we have a progress listener, so we cannot
|
|
// return at this point.
|
|
}
|
|
}
|
|
else // Various unknown actions go here too
|
|
{
|
|
// XXX Put progress dialog in barber-pole mode
|
|
// and change text to say "Copying from:".
|
|
rv = MoveFile(mFinalFileDestination);
|
|
if (NS_SUCCEEDED(rv) && action == nsIMIMEInfo::saveToDisk)
|
|
{
|
|
nsCOMPtr<nsILocalFile> destfile(do_QueryInterface(mFinalFileDestination));
|
|
gExtProtSvc->FixFilePermissions(destfile);
|
|
}
|
|
}
|
|
|
|
// Notify dialog that download is complete.
|
|
// By waiting till this point, it ensures that the progress dialog doesn't indicate
|
|
// success until we're really done.
|
|
if(mWebProgressListener)
|
|
{
|
|
if (!mCanceled)
|
|
{
|
|
mWebProgressListener->OnProgressChange64(nsnull, nsnull, mProgress, mContentLength, mProgress, mContentLength);
|
|
}
|
|
mWebProgressListener->OnStateChange(nsnull, nsnull,
|
|
nsIWebProgressListener::STATE_STOP |
|
|
nsIWebProgressListener::STATE_IS_REQUEST |
|
|
nsIWebProgressListener::STATE_IS_NETWORK, NS_OK);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::GetMIMEInfo(nsIMIMEInfo ** aMIMEInfo)
|
|
{
|
|
*aMIMEInfo = mMimeInfo;
|
|
NS_ADDREF(*aMIMEInfo);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::GetSource(nsIURI ** aSourceURI)
|
|
{
|
|
NS_ENSURE_ARG(aSourceURI);
|
|
*aSourceURI = mSourceUrl;
|
|
NS_IF_ADDREF(*aSourceURI);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::GetSuggestedFileName(nsAString& aSuggestedFileName)
|
|
{
|
|
aSuggestedFileName = mSuggestedFileName;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsExternalAppHandler::InitializeDownload(nsITransfer* aTransfer)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsIURI> target;
|
|
rv = NS_NewFileURI(getter_AddRefs(target), mFinalFileDestination);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
nsCOMPtr<nsILocalFile> lf(do_QueryInterface(mTempFile));
|
|
rv = aTransfer->Init(mSourceUrl, target, EmptyString(),
|
|
mMimeInfo, mTimeDownloadStarted, lf, this);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult nsExternalAppHandler::CreateProgressListener()
|
|
{
|
|
// we are back from the helper app dialog (where the user chooses to save or open), but we aren't
|
|
// done processing the load. in this case, throw up a progress dialog so the user can see what's going on...
|
|
// Also, release our reference to mDialog. We don't need it anymore, and we
|
|
// need to break the reference cycle.
|
|
mDialog = nsnull;
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsITransfer> tr = do_CreateInstance(NS_TRANSFER_CONTRACTID, &rv);
|
|
if (NS_SUCCEEDED(rv))
|
|
InitializeDownload(tr);
|
|
|
|
if (tr)
|
|
tr->OnStateChange(nsnull, mRequest, nsIWebProgressListener::STATE_START |
|
|
nsIWebProgressListener::STATE_IS_REQUEST |
|
|
nsIWebProgressListener::STATE_IS_NETWORK, NS_OK);
|
|
|
|
// note we might not have a listener here if the QI() failed, or if
|
|
// there is no nsITransfer object, but we still call
|
|
// SetWebProgressListener() to make sure our progress state is sane
|
|
// NOTE: This will set up a reference cycle (this nsITransfer has us set up as
|
|
// its observer). This cycle will be broken in Cancel, CloseProgressWindow or
|
|
// OnStopRequest.
|
|
SetWebProgressListener(tr);
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult nsExternalAppHandler::PromptForSaveToFile(nsILocalFile ** aNewFile, const nsAFlatString &aDefaultFile, const nsAFlatString &aFileExtension)
|
|
{
|
|
// invoke the dialog!!!!! use mWindowContext as the window context parameter for the dialog request
|
|
// Convert to use file picker? No, then embeddors could not do any sort of
|
|
// "AutoDownload" w/o showing a prompt
|
|
nsresult rv = NS_OK;
|
|
if (!mDialog)
|
|
{
|
|
// Get helper app launcher dialog.
|
|
mDialog = do_CreateInstance( NS_IHELPERAPPLAUNCHERDLG_CONTRACTID, &rv );
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// we want to explicitly unescape aDefaultFile b4 passing into the dialog. we can't unescape
|
|
// it because the dialog is implemented by a JS component which doesn't have a window so no unescape routine is defined...
|
|
|
|
// Now, be sure to keep |this| alive, and the dialog
|
|
// If we don't do this, users that close the helper app dialog while the file
|
|
// picker is up would cause Cancel() to be called, and the dialog would be
|
|
// released, which would release this object too, which would crash.
|
|
// See Bug 249143
|
|
nsRefPtr<nsExternalAppHandler> kungFuDeathGrip(this);
|
|
nsCOMPtr<nsIHelperAppLauncherDialog> dlg(mDialog);
|
|
rv = mDialog->PromptForSaveToFile(this,
|
|
mWindowContext,
|
|
aDefaultFile.get(),
|
|
aFileExtension.get(),
|
|
mForceSave, aNewFile);
|
|
return rv;
|
|
}
|
|
|
|
nsresult nsExternalAppHandler::MoveFile(nsIFile * aNewFileLocation)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
NS_ASSERTION(mStopRequestIssued, "uhoh, how did we get here if we aren't done getting data?");
|
|
|
|
nsCOMPtr<nsILocalFile> fileToUse = do_QueryInterface(aNewFileLocation);
|
|
|
|
// if the on stop request was actually issued then it's now time to actually perform the file move....
|
|
if (mStopRequestIssued && fileToUse)
|
|
{
|
|
// Unfortunately, MoveTo will fail if a file already exists at the user specified location....
|
|
// but the user has told us, this is where they want the file! (when we threw up the save to file dialog,
|
|
// it told them the file already exists and do they wish to over write it. So it should be okay to delete
|
|
// fileToUse if it already exists.
|
|
PRBool equalToTempFile = PR_FALSE;
|
|
PRBool filetoUseAlreadyExists = PR_FALSE;
|
|
fileToUse->Equals(mTempFile, &equalToTempFile);
|
|
fileToUse->Exists(&filetoUseAlreadyExists);
|
|
if (filetoUseAlreadyExists && !equalToTempFile)
|
|
fileToUse->Remove(PR_FALSE);
|
|
|
|
// extract the new leaf name from the file location
|
|
nsAutoString fileName;
|
|
fileToUse->GetLeafName(fileName);
|
|
nsCOMPtr<nsIFile> directoryLocation;
|
|
rv = fileToUse->GetParent(getter_AddRefs(directoryLocation));
|
|
if (directoryLocation)
|
|
{
|
|
rv = mTempFile->MoveTo(directoryLocation, fileName);
|
|
}
|
|
if (NS_FAILED(rv))
|
|
{
|
|
// Send error notification.
|
|
nsAutoString path;
|
|
fileToUse->GetPath(path);
|
|
SendStatusChange(kWriteError, rv, nsnull, path);
|
|
Cancel(rv); // Cancel (and clean up temp file).
|
|
}
|
|
#if defined(XP_OS2)
|
|
else
|
|
{
|
|
// tag the file with its source URI
|
|
nsCOMPtr<nsILocalFileOS2> localFileOS2 = do_QueryInterface(fileToUse);
|
|
if (localFileOS2)
|
|
{
|
|
nsCAutoString url;
|
|
mSourceUrl->GetSpec(url);
|
|
localFileOS2->SetFileSource(url);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
// SaveToDisk should only be called by the helper app dialog which allows
|
|
// the user to say launch with application or save to disk. It doesn't actually
|
|
// perform the save, it just prompts for the destination file name. The actual save
|
|
// won't happen until we are done downloading the content and are sure we've
|
|
// shown a progress dialog. This was done to simplify the
|
|
// logic that was showing up in this method. Internal callers who actually want
|
|
// to preform the save should call ::MoveFile
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::SaveToDisk(nsIFile * aNewFileLocation, PRBool aRememberThisPreference)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (mCanceled)
|
|
return NS_OK;
|
|
|
|
mMimeInfo->SetPreferredAction(nsIMIMEInfo::saveToDisk);
|
|
|
|
// The helper app dialog has told us what to do.
|
|
mReceivedDispositionInfo = PR_TRUE;
|
|
|
|
nsCOMPtr<nsILocalFile> fileToUse = do_QueryInterface(aNewFileLocation);
|
|
if (!fileToUse)
|
|
{
|
|
nsAutoString leafName;
|
|
mTempFile->GetLeafName(leafName);
|
|
if (mSuggestedFileName.IsEmpty())
|
|
rv = PromptForSaveToFile(getter_AddRefs(fileToUse), leafName, mTempFileExtension);
|
|
else
|
|
{
|
|
nsAutoString fileExt;
|
|
PRInt32 pos = mSuggestedFileName.RFindChar('.');
|
|
if (pos >= 0)
|
|
mSuggestedFileName.Right(fileExt, mSuggestedFileName.Length() - pos);
|
|
if (fileExt.IsEmpty())
|
|
fileExt = mTempFileExtension;
|
|
|
|
rv = PromptForSaveToFile(getter_AddRefs(fileToUse), mSuggestedFileName, fileExt);
|
|
}
|
|
|
|
if (NS_FAILED(rv) || !fileToUse) {
|
|
Cancel(NS_BINDING_ABORTED);
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
mFinalFileDestination = do_QueryInterface(fileToUse);
|
|
|
|
// Move what we have in the final directory, but append .part
|
|
// to it, to indicate that it's unfinished.
|
|
// do not do that if we're already done
|
|
if (mFinalFileDestination && !mStopRequestIssued)
|
|
{
|
|
nsCOMPtr<nsIFile> movedFile;
|
|
mFinalFileDestination->Clone(getter_AddRefs(movedFile));
|
|
if (movedFile) {
|
|
// Get the old leaf name and append .part to it
|
|
nsAutoString name;
|
|
mFinalFileDestination->GetLeafName(name);
|
|
name.AppendLiteral(".part");
|
|
movedFile->SetLeafName(name);
|
|
|
|
nsCOMPtr<nsIFile> dir;
|
|
movedFile->GetParent(getter_AddRefs(dir));
|
|
|
|
mOutStream->Close();
|
|
|
|
rv = mTempFile->MoveTo(dir, name);
|
|
if (NS_SUCCEEDED(rv)) // if it failed, we just continue with $TEMP
|
|
mTempFile = movedFile;
|
|
|
|
nsCOMPtr<nsIOutputStream> outputStream;
|
|
rv = NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), mTempFile,
|
|
PR_WRONLY | PR_APPEND, 0600);
|
|
if (NS_FAILED(rv)) { // (Re-)opening the output stream failed. bad luck.
|
|
nsAutoString path;
|
|
mTempFile->GetPath(path);
|
|
SendStatusChange(kWriteError, rv, nsnull, path);
|
|
Cancel(rv);
|
|
return NS_OK;
|
|
}
|
|
|
|
mOutStream = NS_BufferOutputStream(outputStream, BUFFERED_OUTPUT_SIZE);
|
|
}
|
|
}
|
|
|
|
if (!mProgressListenerInitialized)
|
|
CreateProgressListener();
|
|
|
|
// now that the user has chosen the file location to save to, it's okay to fire the refresh tag
|
|
// if there is one. We don't want to do this before the save as dialog goes away because this dialog
|
|
// is modal and we do bad things if you try to load a web page in the underlying window while a modal
|
|
// dialog is still up.
|
|
ProcessAnyRefreshTags();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult nsExternalAppHandler::OpenWithApplication()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (mCanceled)
|
|
return NS_OK;
|
|
|
|
// we only should have gotten here if the on stop request had been fired already.
|
|
|
|
NS_ASSERTION(mStopRequestIssued, "uhoh, how did we get here if we aren't done getting data?");
|
|
// if a stop request was already issued then proceed with launching the application.
|
|
if (mStopRequestIssued)
|
|
{
|
|
PRBool deleteTempFileOnExit;
|
|
nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID));
|
|
if (!prefs || NS_FAILED(prefs->GetBoolPref(
|
|
"browser.helperApps.deleteTempFileOnExit", &deleteTempFileOnExit))) {
|
|
// No prefservice or no pref set; use default value
|
|
#if !defined(XP_MACOSX)
|
|
// Mac users have been very verbal about temp files being deleted on
|
|
// app exit - they don't like it - but we'll continue to do this on
|
|
// other platforms for now.
|
|
deleteTempFileOnExit = PR_TRUE;
|
|
#else
|
|
deleteTempFileOnExit = PR_FALSE;
|
|
#endif
|
|
}
|
|
|
|
// make the tmp file readonly so users won't edit it and lose the changes
|
|
// only if we're going to delete the file
|
|
if (deleteTempFileOnExit || gExtProtSvc->InPrivateBrowsing())
|
|
mFinalFileDestination->SetPermissions(0400);
|
|
|
|
rv = mMimeInfo->LaunchWithFile(mFinalFileDestination);
|
|
if (NS_FAILED(rv))
|
|
{
|
|
// Send error notification.
|
|
nsAutoString path;
|
|
mFinalFileDestination->GetPath(path);
|
|
SendStatusChange(kLaunchError, rv, nsnull, path);
|
|
Cancel(rv); // Cancel, and clean up temp file.
|
|
}
|
|
// Always schedule files to be deleted at the end of the private browsing
|
|
// mode, regardless of the value of the pref.
|
|
else if (deleteTempFileOnExit || gExtProtSvc->InPrivateBrowsing()) {
|
|
NS_ASSERTION(gExtProtSvc, "Service gone away!?");
|
|
gExtProtSvc->DeleteTemporaryFileOnExit(mFinalFileDestination);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
// LaunchWithApplication should only be called by the helper app dialog which allows
|
|
// the user to say launch with application or save to disk. It doesn't actually
|
|
// perform launch with application. That won't happen until we are done downloading
|
|
// the content and are sure we've showna progress dialog. This was done to simplify the
|
|
// logic that was showing up in this method.
|
|
NS_IMETHODIMP nsExternalAppHandler::LaunchWithApplication(nsIFile * aApplication, PRBool aRememberThisPreference)
|
|
{
|
|
if (mCanceled)
|
|
return NS_OK;
|
|
|
|
// user has chosen to launch using an application, fire any refresh tags now...
|
|
ProcessAnyRefreshTags();
|
|
|
|
mReceivedDispositionInfo = PR_TRUE;
|
|
if (mMimeInfo && aApplication) {
|
|
PlatformLocalHandlerApp_t *handlerApp =
|
|
new PlatformLocalHandlerApp_t(EmptyString(), aApplication);
|
|
mMimeInfo->SetPreferredApplicationHandler(handlerApp);
|
|
}
|
|
|
|
// Now check if the file is local, in which case we won't bother with saving
|
|
// it to a temporary directory and just launch it from where it is
|
|
nsCOMPtr<nsIFileURL> fileUrl(do_QueryInterface(mSourceUrl));
|
|
if (fileUrl && mIsFileChannel)
|
|
{
|
|
Cancel(NS_BINDING_ABORTED);
|
|
nsCOMPtr<nsIFile> file;
|
|
nsresult rv = fileUrl->GetFile(getter_AddRefs(file));
|
|
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
rv = mMimeInfo->LaunchWithFile(file);
|
|
if (NS_SUCCEEDED(rv))
|
|
return NS_OK;
|
|
}
|
|
nsAutoString path;
|
|
if (file)
|
|
file->GetPath(path);
|
|
// If we get here, an error happened
|
|
SendStatusChange(kLaunchError, rv, nsnull, path);
|
|
return rv;
|
|
}
|
|
|
|
// Now that the user has elected to launch the downloaded file with a helper app, we're justified in
|
|
// removing the 'salted' name. We'll rename to what was specified in mSuggestedFileName after the
|
|
// download is done prior to launching the helper app. So that any existing file of that name won't
|
|
// be overwritten we call CreateUnique() before calling MoveFile(). Also note that we use the same
|
|
// directory as originally downloaded to so that MoveFile() just does an in place rename.
|
|
|
|
nsCOMPtr<nsIFile> fileToUse;
|
|
(void) GetDownloadDirectory(getter_AddRefs(fileToUse));
|
|
|
|
if (mSuggestedFileName.IsEmpty())
|
|
{
|
|
// Keep using the leafname of the temp file, since we're just starting a helper
|
|
mTempFile->GetLeafName(mSuggestedFileName);
|
|
}
|
|
|
|
#ifdef XP_WIN
|
|
fileToUse->Append(mSuggestedFileName + mTempFileExtension);
|
|
#else
|
|
fileToUse->Append(mSuggestedFileName);
|
|
#endif
|
|
|
|
// We'll make sure this results in a unique name later
|
|
|
|
mFinalFileDestination = do_QueryInterface(fileToUse);
|
|
|
|
// launch the progress window now that the user has picked the desired action.
|
|
if (!mProgressListenerInitialized)
|
|
CreateProgressListener();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalAppHandler::Cancel(nsresult aReason)
|
|
{
|
|
NS_ENSURE_ARG(NS_FAILED(aReason));
|
|
// XXX should not ignore the reason
|
|
|
|
mCanceled = PR_TRUE;
|
|
// Break our reference cycle with the helper app dialog (set up in
|
|
// OnStartRequest)
|
|
mDialog = nsnull;
|
|
// shutdown our stream to the temp file
|
|
if (mOutStream)
|
|
{
|
|
mOutStream->Close();
|
|
mOutStream = nsnull;
|
|
}
|
|
|
|
// Clean up after ourselves and delete the temp file only if the user
|
|
// canceled the helper app dialog (we didn't get the disposition info yet).
|
|
// We leave the partial file for everything else because it could be useful
|
|
// e.g., resume a download
|
|
if (mTempFile && !mReceivedDispositionInfo)
|
|
{
|
|
mTempFile->Remove(PR_FALSE);
|
|
mTempFile = nsnull;
|
|
}
|
|
|
|
// Release the listener, to break the reference cycle with it (we are the
|
|
// observer of the listener).
|
|
mWebProgressListener = nsnull;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsExternalAppHandler::ProcessAnyRefreshTags()
|
|
{
|
|
// one last thing, try to see if the original window context supports a refresh interface...
|
|
// Sometimes, when you download content that requires an external handler, there is
|
|
// a refresh header associated with the download. This refresh header points to a page
|
|
// the content provider wants the user to see after they download the content. How do we
|
|
// pass this refresh information back to the caller? For now, try to get the refresh URI
|
|
// interface. If the window context where the request originated came from supports this
|
|
// then we can force it to process the refresh information (if there is any) from this channel.
|
|
if (mWindowContext && mOriginalChannel)
|
|
{
|
|
nsCOMPtr<nsIRefreshURI> refreshHandler (do_GetInterface(mWindowContext));
|
|
if (refreshHandler) {
|
|
refreshHandler->SetupRefreshURI(mOriginalChannel);
|
|
}
|
|
mOriginalChannel = nsnull;
|
|
}
|
|
}
|
|
|
|
PRBool nsExternalAppHandler::GetNeverAskFlagFromPref(const char * prefName, const char * aContentType)
|
|
{
|
|
// Search the obsolete pref strings.
|
|
nsresult rv;
|
|
nsCOMPtr<nsIPrefService> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
|
|
nsCOMPtr<nsIPrefBranch> prefBranch;
|
|
if (prefs)
|
|
rv = prefs->GetBranch(NEVER_ASK_PREF_BRANCH, getter_AddRefs(prefBranch));
|
|
if (NS_SUCCEEDED(rv) && prefBranch)
|
|
{
|
|
nsXPIDLCString prefCString;
|
|
nsCAutoString prefValue;
|
|
rv = prefBranch->GetCharPref(prefName, getter_Copies(prefCString));
|
|
if (NS_SUCCEEDED(rv) && !prefCString.IsEmpty())
|
|
{
|
|
NS_UnescapeURL(prefCString);
|
|
nsACString::const_iterator start, end;
|
|
prefCString.BeginReading(start);
|
|
prefCString.EndReading(end);
|
|
if (CaseInsensitiveFindInReadable(nsDependentCString(aContentType), start, end))
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
// Default is true, if not found in the pref string.
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult nsExternalAppHandler::MaybeCloseWindow()
|
|
{
|
|
nsCOMPtr<nsIDOMWindow> window(do_GetInterface(mWindowContext));
|
|
nsCOMPtr<nsIDOMWindowInternal> internalWindow = do_QueryInterface(window);
|
|
NS_ENSURE_STATE(internalWindow);
|
|
|
|
if (mShouldCloseWindow) {
|
|
// Reset the window context to the opener window so that the dependent
|
|
// dialogs have a parent
|
|
nsCOMPtr<nsIDOMWindowInternal> opener;
|
|
internalWindow->GetOpener(getter_AddRefs(opener));
|
|
|
|
PRBool isClosed;
|
|
if (opener && NS_SUCCEEDED(opener->GetClosed(&isClosed)) && !isClosed) {
|
|
mWindowContext = do_GetInterface(opener);
|
|
|
|
// Now close the old window. Do it on a timer so that we don't run
|
|
// into issues trying to close the window before it has fully opened.
|
|
NS_ASSERTION(!mTimer, "mTimer was already initialized once!");
|
|
mTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (!mTimer) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mTimer->InitWithCallback(this, 0, nsITimer::TYPE_ONE_SHOT);
|
|
mWindowToClose = internalWindow;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsExternalAppHandler::Notify(nsITimer* timer)
|
|
{
|
|
NS_ASSERTION(mWindowToClose, "No window to close after timer fired");
|
|
|
|
mWindowToClose->Close();
|
|
mWindowToClose = nsnull;
|
|
mTimer = nsnull;
|
|
|
|
return NS_OK;
|
|
}
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// The following section contains our nsIMIMEService implementation and related methods.
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// nsIMIMEService methods
|
|
NS_IMETHODIMP nsExternalHelperAppService::GetFromTypeAndExtension(const nsACString& aMIMEType, const nsACString& aFileExt, nsIMIMEInfo **_retval)
|
|
{
|
|
NS_PRECONDITION(!aMIMEType.IsEmpty() ||
|
|
!aFileExt.IsEmpty(),
|
|
"Give me something to work with");
|
|
LOG(("Getting mimeinfo from type '%s' ext '%s'\n",
|
|
PromiseFlatCString(aMIMEType).get(), PromiseFlatCString(aFileExt).get()));
|
|
|
|
*_retval = nsnull;
|
|
|
|
// OK... we need a type. Get one.
|
|
nsCAutoString typeToUse(aMIMEType);
|
|
if (typeToUse.IsEmpty()) {
|
|
nsresult rv = GetTypeFromExtension(aFileExt, typeToUse);
|
|
if (NS_FAILED(rv))
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
// We promise to only send lower case mime types to the OS
|
|
ToLowerCase(typeToUse);
|
|
|
|
// (1) Ask the OS for a mime info
|
|
PRBool found;
|
|
*_retval = GetMIMEInfoFromOS(typeToUse, aFileExt, &found).get();
|
|
LOG(("OS gave back 0x%p - found: %i\n", *_retval, found));
|
|
// If we got no mimeinfo, something went wrong. Probably lack of memory.
|
|
if (!*_retval)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// (2) Now, let's see if we can find something in our datastore
|
|
// This will not overwrite the OS information that interests us
|
|
// (i.e. default application, default app. description)
|
|
nsresult rv;
|
|
nsCOMPtr<nsIHandlerService> handlerSvc = do_GetService(NS_HANDLERSERVICE_CONTRACTID);
|
|
if (handlerSvc) {
|
|
PRBool hasHandler = PR_FALSE;
|
|
(void) handlerSvc->Exists(*_retval, &hasHandler);
|
|
if (hasHandler) {
|
|
rv = handlerSvc->FillHandlerInfo(*_retval, EmptyCString());
|
|
LOG(("Data source: Via type: retval 0x%08x\n", rv));
|
|
} else {
|
|
rv = NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
found = found || NS_SUCCEEDED(rv);
|
|
|
|
if (!found || NS_FAILED(rv)) {
|
|
// No type match, try extension match
|
|
if (!aFileExt.IsEmpty()) {
|
|
nsCAutoString overrideType;
|
|
rv = handlerSvc->GetTypeFromExtension(aFileExt, overrideType);
|
|
if (NS_SUCCEEDED(rv) && !overrideType.IsEmpty()) {
|
|
// We can't check handlerSvc->Exists() here, because we have a
|
|
// overideType. That's ok, it just results in some console noise.
|
|
// (If there's no handler for the override type, it throws)
|
|
rv = handlerSvc->FillHandlerInfo(*_retval, overrideType);
|
|
LOG(("Data source: Via ext: retval 0x%08x\n", rv));
|
|
found = found || NS_SUCCEEDED(rv);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// (3) No match yet. Ask extras.
|
|
if (!found) {
|
|
rv = NS_ERROR_FAILURE;
|
|
#ifdef XP_WIN
|
|
/* XXX Gross hack to wallpaper over the most common Win32
|
|
* extension issues caused by the fix for bug 116938. See bug
|
|
* 120327, comment 271 for why this is needed. Not even sure we
|
|
* want to remove this once we have fixed all this stuff to work
|
|
* right; any info we get from extras on this type is pretty much
|
|
* useless....
|
|
*/
|
|
if (!typeToUse.Equals(APPLICATION_OCTET_STREAM, nsCaseInsensitiveCStringComparator()))
|
|
#endif
|
|
rv = FillMIMEInfoForMimeTypeFromExtras(typeToUse, *_retval);
|
|
LOG(("Searched extras (by type), rv 0x%08X\n", rv));
|
|
// If that didn't work out, try file extension from extras
|
|
if (NS_FAILED(rv) && !aFileExt.IsEmpty()) {
|
|
rv = FillMIMEInfoForExtensionFromExtras(aFileExt, *_retval);
|
|
LOG(("Searched extras (by ext), rv 0x%08X\n", rv));
|
|
}
|
|
// If that still didn't work, set the file description to "ext File"
|
|
if (NS_FAILED(rv) && !aFileExt.IsEmpty()) {
|
|
// XXXzpao This should probably be localized
|
|
nsCAutoString desc(aFileExt);
|
|
desc.Append(" File");
|
|
(*_retval)->SetDescription(NS_ConvertASCIItoUTF16(desc));
|
|
LOG(("Falling back to 'File' file description\n"));
|
|
}
|
|
}
|
|
|
|
// Finally, check if we got a file extension and if yes, if it is an
|
|
// extension on the mimeinfo, in which case we want it to be the primary one
|
|
if (!aFileExt.IsEmpty()) {
|
|
PRBool matches = PR_FALSE;
|
|
(*_retval)->ExtensionExists(aFileExt, &matches);
|
|
LOG(("Extension '%s' matches mime info: %i\n", PromiseFlatCString(aFileExt).get(), matches));
|
|
if (matches)
|
|
(*_retval)->SetPrimaryExtension(aFileExt);
|
|
}
|
|
|
|
#ifdef PR_LOGGING
|
|
if (LOG_ENABLED()) {
|
|
nsCAutoString type;
|
|
(*_retval)->GetMIMEType(type);
|
|
|
|
nsCAutoString ext;
|
|
(*_retval)->GetPrimaryExtension(ext);
|
|
LOG(("MIME Info Summary: Type '%s', Primary Ext '%s'\n", type.get(), ext.get()));
|
|
}
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromExtension(const nsACString& aFileExt, nsACString& aContentType)
|
|
{
|
|
// OK. We want to try the following sources of mimetype information, in this order:
|
|
// 1. defaultMimeEntries array
|
|
// 2. User-set preferences (managed by the handler service)
|
|
// 3. OS-provided information
|
|
// 4. our "extras" array
|
|
// 5. Information from plugins
|
|
// 6. The "ext-to-type-mapping" category
|
|
|
|
nsresult rv = NS_OK;
|
|
// First of all, check our default entries
|
|
for (size_t i = 0; i < NS_ARRAY_LENGTH(defaultMimeEntries); i++)
|
|
{
|
|
if (aFileExt.LowerCaseEqualsASCII(defaultMimeEntries[i].mFileExtension)) {
|
|
aContentType = defaultMimeEntries[i].mMimeType;
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Check user-set prefs
|
|
nsCOMPtr<nsIHandlerService> handlerSvc = do_GetService(NS_HANDLERSERVICE_CONTRACTID);
|
|
if (handlerSvc)
|
|
rv = handlerSvc->GetTypeFromExtension(aFileExt, aContentType);
|
|
if (NS_SUCCEEDED(rv) && !aContentType.IsEmpty())
|
|
return NS_OK;
|
|
|
|
// Ask OS.
|
|
PRBool found = PR_FALSE;
|
|
nsCOMPtr<nsIMIMEInfo> mi = GetMIMEInfoFromOS(EmptyCString(), aFileExt, &found);
|
|
if (mi && found)
|
|
return mi->GetMIMEType(aContentType);
|
|
|
|
// Check extras array.
|
|
found = GetTypeFromExtras(aFileExt, aContentType);
|
|
if (found)
|
|
return NS_OK;
|
|
|
|
const nsCString& flatExt = PromiseFlatCString(aFileExt);
|
|
// Try the plugins
|
|
const char* mimeType;
|
|
nsCOMPtr<nsIPluginHost> pluginHost (do_GetService(MOZ_PLUGIN_HOST_CONTRACTID, &rv));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (NS_SUCCEEDED(pluginHost->IsPluginEnabledForExtension(flatExt.get(), mimeType))) {
|
|
aContentType = mimeType;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
rv = NS_OK;
|
|
// Let's see if an extension added something
|
|
nsCOMPtr<nsICategoryManager> catMan(do_GetService("@mozilla.org/categorymanager;1"));
|
|
if (catMan) {
|
|
// The extension in the category entry is always stored as lowercase
|
|
nsCAutoString lowercaseFileExt(aFileExt);
|
|
ToLowerCase(lowercaseFileExt);
|
|
// Read the MIME type from the category entry, if available
|
|
nsXPIDLCString type;
|
|
rv = catMan->GetCategoryEntry("ext-to-type-mapping", lowercaseFileExt.get(),
|
|
getter_Copies(type));
|
|
aContentType = type;
|
|
}
|
|
else {
|
|
rv = NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::GetPrimaryExtension(const nsACString& aMIMEType, const nsACString& aFileExt, nsACString& _retval)
|
|
{
|
|
NS_ENSURE_ARG(!aMIMEType.IsEmpty());
|
|
|
|
nsCOMPtr<nsIMIMEInfo> mi;
|
|
nsresult rv = GetFromTypeAndExtension(aMIMEType, aFileExt, getter_AddRefs(mi));
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
return mi->GetPrimaryExtension(_retval);
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromURI(nsIURI *aURI, nsACString& aContentType)
|
|
{
|
|
nsresult rv = NS_ERROR_NOT_AVAILABLE;
|
|
aContentType.Truncate();
|
|
|
|
// First look for a file to use. If we have one, we just use that.
|
|
nsCOMPtr<nsIFileURL> fileUrl = do_QueryInterface(aURI);
|
|
if (fileUrl) {
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = fileUrl->GetFile(getter_AddRefs(file));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = GetTypeFromFile(file, aContentType);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// we got something!
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now try to get an nsIURL so we don't have to do our own parsing
|
|
nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
|
|
if (url) {
|
|
nsCAutoString ext;
|
|
rv = url->GetFileExtension(ext);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
if (ext.IsEmpty())
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
UnescapeFragment(ext, url, ext);
|
|
|
|
return GetTypeFromExtension(ext, aContentType);
|
|
}
|
|
|
|
// no url, let's give the raw spec a shot
|
|
nsCAutoString specStr;
|
|
rv = aURI->GetSpec(specStr);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
UnescapeFragment(specStr, aURI, specStr);
|
|
|
|
// find the file extension (if any)
|
|
PRInt32 extLoc = specStr.RFindChar('.');
|
|
PRInt32 specLength = specStr.Length();
|
|
if (-1 != extLoc &&
|
|
extLoc != specLength - 1 &&
|
|
// nothing over 20 chars long can be sanely considered an
|
|
// extension.... Dat dere would be just data.
|
|
specLength - extLoc < 20)
|
|
{
|
|
return GetTypeFromExtension(Substring(specStr, extLoc + 1), aContentType);
|
|
}
|
|
|
|
// We found no information; say so.
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromFile(nsIFile* aFile, nsACString& aContentType)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIMIMEInfo> info;
|
|
|
|
// Get the Extension
|
|
nsAutoString fileName;
|
|
rv = aFile->GetLeafName(fileName);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
nsCAutoString fileExt;
|
|
if (!fileName.IsEmpty())
|
|
{
|
|
PRInt32 len = fileName.Length();
|
|
for (PRInt32 i = len; i >= 0; i--)
|
|
{
|
|
if (fileName[i] == PRUnichar('.'))
|
|
{
|
|
CopyUTF16toUTF8(fileName.get() + i + 1, fileExt);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (fileExt.IsEmpty())
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return GetTypeFromExtension(fileExt, aContentType);
|
|
}
|
|
|
|
nsresult nsExternalHelperAppService::FillMIMEInfoForMimeTypeFromExtras(
|
|
const nsACString& aContentType, nsIMIMEInfo * aMIMEInfo)
|
|
{
|
|
NS_ENSURE_ARG( aMIMEInfo );
|
|
|
|
NS_ENSURE_ARG( !aContentType.IsEmpty() );
|
|
|
|
// Look for default entry with matching mime type.
|
|
nsCAutoString MIMEType(aContentType);
|
|
ToLowerCase(MIMEType);
|
|
PRInt32 numEntries = NS_ARRAY_LENGTH(extraMimeEntries);
|
|
for (PRInt32 index = 0; index < numEntries; index++)
|
|
{
|
|
if ( MIMEType.Equals(extraMimeEntries[index].mMimeType) )
|
|
{
|
|
// This is the one. Set attributes appropriately.
|
|
aMIMEInfo->SetFileExtensions(nsDependentCString(extraMimeEntries[index].mFileExtensions));
|
|
aMIMEInfo->SetDescription(NS_ConvertASCIItoUTF16(extraMimeEntries[index].mDescription));
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
nsresult nsExternalHelperAppService::FillMIMEInfoForExtensionFromExtras(
|
|
const nsACString& aExtension, nsIMIMEInfo * aMIMEInfo)
|
|
{
|
|
nsCAutoString type;
|
|
PRBool found = GetTypeFromExtras(aExtension, type);
|
|
if (!found)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
return FillMIMEInfoForMimeTypeFromExtras(type, aMIMEInfo);
|
|
}
|
|
|
|
PRBool nsExternalHelperAppService::GetTypeFromExtras(const nsACString& aExtension, nsACString& aMIMEType)
|
|
{
|
|
NS_ASSERTION(!aExtension.IsEmpty(), "Empty aExtension parameter!");
|
|
|
|
// Look for default entry with matching extension.
|
|
nsDependentCString::const_iterator start, end, iter;
|
|
PRInt32 numEntries = NS_ARRAY_LENGTH(extraMimeEntries);
|
|
for (PRInt32 index = 0; index < numEntries; index++)
|
|
{
|
|
nsDependentCString extList(extraMimeEntries[index].mFileExtensions);
|
|
extList.BeginReading(start);
|
|
extList.EndReading(end);
|
|
iter = start;
|
|
while (start != end)
|
|
{
|
|
FindCharInReadable(',', iter, end);
|
|
if (Substring(start, iter).Equals(aExtension,
|
|
nsCaseInsensitiveCStringComparator()))
|
|
{
|
|
aMIMEType = extraMimeEntries[index].mMimeType;
|
|
return PR_TRUE;
|
|
}
|
|
if (iter != end) {
|
|
++iter;
|
|
}
|
|
start = iter;
|
|
}
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|