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https://github.com/mozilla/gecko-dev.git
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7ea034fb6b
This adds a new method launchWithFile on nsIMIMEInfo which takes care of opening the selected (preferred or default) application on the mime info with a specified document. defaultDescription is now readonly, and defaultApplication no longer available. This also removes the clone method which was unused in the entire tree.
483 lines
15 KiB
C++
483 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications, Inc. Portions created by Netscape are
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* Copyright (C) 1999, Mozilla. 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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*/
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#include "nsOSHelperAppService.h"
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#include "nsISupports.h"
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#include "nsString.h"
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#include "nsXPIDLString.h"
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#include "nsIURL.h"
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#include "nsIMIMEInfo.h"
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#include "nsMIMEInfoWin.h"
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#include "nsMimeTypes.h"
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#include "nsILocalFile.h"
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#include "nsIProcess.h"
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#include "plstr.h"
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#include "nsAutoPtr.h"
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#include "nsNativeCharsetUtils.h"
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// we need windows.h to read out registry information...
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#include <windows.h>
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// shellapi.h is needed to build with WIN32_LEAN_AND_MEAN
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#include <shellapi.h>
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#define LOG(args) PR_LOG(mLog, PR_LOG_DEBUG, args)
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// helper methods: forward declarations...
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static BYTE * GetValueBytes( HKEY hKey, const char *pValueName, DWORD *pLen=0);
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static nsresult GetExtensionFrom4xRegistryInfo(const char * aMimeType, nsCString& aFileExtension);
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static nsresult GetExtensionFromWindowsMimeDatabase(const char * aMimeType, nsCString& aFileExtension);
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// static member
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PRBool nsOSHelperAppService::mIsNT = PR_FALSE;
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nsOSHelperAppService::nsOSHelperAppService() : nsExternalHelperAppService()
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{
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OSVERSIONINFO osversion;
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::ZeroMemory(&osversion, sizeof(OSVERSIONINFO));
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osversion.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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if (!GetVersionEx(&osversion)) {
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// If the call failed, better be safe and assume *W functions don't work
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mIsNT = PR_FALSE;
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}
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else {
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mIsNT = (osversion.dwPlatformId == VER_PLATFORM_WIN32_NT);
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}
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}
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nsOSHelperAppService::~nsOSHelperAppService()
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{}
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// The windows registry provides a mime database key which lists a set of mime types and corresponding "Extension" values.
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// we can use this to look up our mime type to see if there is a preferred extension for the mime type.
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static nsresult GetExtensionFromWindowsMimeDatabase(const char * aMimeType, nsCString& aFileExtension)
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{
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HKEY hKey;
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nsCAutoString mimeDatabaseKey ("MIME\\Database\\Content Type\\");
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mimeDatabaseKey += aMimeType;
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LONG err = ::RegOpenKeyEx( HKEY_CLASSES_ROOT, mimeDatabaseKey.get(), 0, KEY_QUERY_VALUE, &hKey);
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if (err == ERROR_SUCCESS)
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{
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LPBYTE pBytes = GetValueBytes( hKey, "Extension");
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if (pBytes)
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{
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aFileExtension = (char * )pBytes;
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}
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delete[] pBytes;
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::RegCloseKey(hKey);
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}
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return NS_OK;
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}
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// We have a serious problem!! I have this content type and the windows registry only gives me
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// helper apps based on extension. Right now, we really don't have a good place to go for
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// trying to figure out the extension for a particular mime type....One short term hack is to look
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// this information in 4.x (it's stored in the windows regsitry).
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static nsresult GetExtensionFrom4xRegistryInfo(const char * aMimeType, nsCString& aFileExtension)
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{
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nsCAutoString command ("Software\\Netscape\\Netscape Navigator\\Suffixes");
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nsresult rv = NS_OK;
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HKEY hKey;
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LONG err = ::RegOpenKeyEx( HKEY_CURRENT_USER, command.get(), 0, KEY_QUERY_VALUE, &hKey);
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if (err == ERROR_SUCCESS)
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{
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LPBYTE pBytes = GetValueBytes( hKey, aMimeType);
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if (pBytes) // only try to get the extension if we have a value!
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{
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aFileExtension = ".";
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aFileExtension.Append( (char *) pBytes);
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// this may be a comma separate list of extensions...just take the first one
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// for now...
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PRInt32 pos = aFileExtension.FindChar(',');
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if (pos > 0) // we have a comma separated list of languages...
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aFileExtension.Truncate(pos); // truncate everything after the first comma (including the comma)
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}
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delete [] pBytes;
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// close the key
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::RegCloseKey(hKey);
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}
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else
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rv = NS_ERROR_FAILURE; // no 4.x extension mapping found!
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return rv;
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}
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static BYTE * GetValueBytes( HKEY hKey, const char *pValueName, DWORD *pLen)
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{
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LONG err;
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DWORD bufSz;
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LPBYTE pBytes = NULL;
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err = ::RegQueryValueEx( hKey, pValueName, NULL, NULL, NULL, &bufSz);
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if (err == ERROR_SUCCESS) {
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pBytes = new BYTE[bufSz];
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err = ::RegQueryValueEx( hKey, pValueName, NULL, NULL, pBytes, &bufSz);
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if (err != ERROR_SUCCESS) {
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delete [] pBytes;
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pBytes = NULL;
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} else {
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// Return length if caller wanted it.
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if ( pLen ) {
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*pLen = bufSz;
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}
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}
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}
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return( pBytes);
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}
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/* static */
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PRBool nsOSHelperAppService::GetValueString(HKEY hKey, PRUnichar* pValueName, nsAString& result)
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{
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if (!mIsNT) {
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nsCAutoString cValueName;
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if (pValueName)
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NS_CopyUnicodeToNative(nsDependentString(pValueName), cValueName);
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char* pBytes = (char*)GetValueBytes(hKey, cValueName.get());
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if (pBytes) {
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nsresult rv = NS_CopyNativeToUnicode(nsDependentCString(pBytes), result);
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delete[] pBytes;
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return NS_SUCCEEDED(rv);
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}
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return PR_FALSE;
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}
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DWORD bufSz;
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LONG err = ::RegQueryValueExW( hKey, pValueName, NULL, NULL, NULL, &bufSz);
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if (err == ERROR_SUCCESS) {
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PRUnichar* pBytes = new PRUnichar[bufSz];
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if (!pBytes)
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return PR_FALSE;
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err = ::RegQueryValueExW( hKey, pValueName, NULL, NULL, (BYTE*)pBytes, &bufSz);
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if (err != ERROR_SUCCESS) {
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delete [] pBytes;
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return PR_FALSE;
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} else {
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result.Assign(pBytes);
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delete [] pBytes;
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return PR_TRUE;
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}
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}
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return PR_FALSE;
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}
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NS_IMETHODIMP nsOSHelperAppService::ExternalProtocolHandlerExists(const char * aProtocolScheme, PRBool * aHandlerExists)
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{
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// look up the protocol scheme in the windows registry....if we find a match then we have a handler for it...
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*aHandlerExists = PR_FALSE;
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if (aProtocolScheme && *aProtocolScheme)
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{
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HKEY hKey;
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LONG err = ::RegOpenKeyEx( HKEY_CLASSES_ROOT, aProtocolScheme, 0, KEY_QUERY_VALUE, &hKey);
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if (err == ERROR_SUCCESS)
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{
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*aHandlerExists = PR_TRUE;
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// close the key
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::RegCloseKey(hKey);
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}
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}
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return NS_OK;
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}
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// this implementation was pretty much copied verbatime from Tony Robinson's code in nsExternalProtocolWin.cpp
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NS_IMETHODIMP nsOSHelperAppService::LoadUrl(nsIURI * aURL)
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{
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nsresult rv = NS_OK;
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// 1. Find the default app for this protocol
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// 2. Set up the command line
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// 3. Launch the app.
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// For now, we'll just cheat essentially, check for the command line
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// then just call ShellExecute()!
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if (aURL)
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{
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// extract the url spec from the url
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nsCAutoString urlSpec;
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aURL->GetAsciiSpec(urlSpec);
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// Some versions of windows (Win2k before SP3, Win XP before SP1)
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// crash in ShellExecute on long URLs (bug 161357).
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// IE 5 and 6 support URLS of 2083 chars in length, 2K is safe
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const PRUint32 maxSafeURL(2048);
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if (urlSpec.Length() > maxSafeURL)
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return NS_ERROR_FAILURE;
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LONG r = (LONG) ::ShellExecute( NULL, "open", urlSpec.get(), NULL, NULL, SW_SHOWNORMAL);
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if (r < 32)
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rv = NS_ERROR_FAILURE;
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}
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return rv;
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}
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nsresult nsOSHelperAppService::GetFileTokenForPath(const PRUnichar * platformAppPath, nsIFile ** aFile)
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{
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nsCOMPtr<nsILocalFile> localFile (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
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if (!localFile)
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return NS_ERROR_FAILURE;
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localFile->InitWithPath(nsDependentString(platformAppPath));
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*aFile = localFile;
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NS_IF_ADDREF(*aFile);
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return NS_OK;
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}
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// GetMIMEInfoFromRegistry: This function obtains the values of some of the nsIMIMEInfo
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// attributes for the mimeType/extension associated with the input registry key. The default
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// entry for that key is the name of a registry key under HKEY_CLASSES_ROOT. The default
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// value for *that* key is the descriptive name of the type. The EditFlags value is a binary
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// value; the low order bit of the third byte of which indicates that the user does not need
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// to be prompted.
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//
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// This function sets only the Description attribute of the input nsIMIMEInfo.
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/* static */
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nsresult nsOSHelperAppService::GetMIMEInfoFromRegistry( const nsAFlatString& fileType, nsIMIMEInfo *pInfo )
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{
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nsresult rv = NS_OK;
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NS_ENSURE_ARG( pInfo );
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// Get registry key for the pointed-to "file type."
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HKEY fileTypeKey = 0;
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LONG rc;
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if (mIsNT) {
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rc = ::RegOpenKeyExW( HKEY_CLASSES_ROOT, fileType.get(), 0, KEY_QUERY_VALUE, &fileTypeKey );
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}
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else {
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nsCAutoString ansiKey;
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rv = NS_CopyUnicodeToNative(fileType, ansiKey);
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if (NS_FAILED(rv))
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return rv;
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rc = ::RegOpenKeyEx( HKEY_CLASSES_ROOT, ansiKey.get(), 0, KEY_QUERY_VALUE, &fileTypeKey );
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}
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if ( rc != ERROR_SUCCESS )
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return NS_ERROR_FAILURE;
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// OK, the default value here is the description of the type.
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nsAutoString description;
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PRBool found = GetValueString(fileTypeKey, NULL, description);
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if (found)
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pInfo->SetDescription(description.get());
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::RegCloseKey(fileTypeKey);
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return NS_OK;
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////
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// method overrides used to gather information from the windows registry for
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// various mime types.
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////////////////////////////////////////////////////////////////////////////////////////////////
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/// Looks up the type for the extension aExt and compares it to aType
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static PRBool typeFromExtEquals(const char *aExt, const char *aType)
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{
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if (!aType)
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return PR_FALSE;
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nsCAutoString fileExtToUse;
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if (aExt[0] != '.')
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fileExtToUse = '.';
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fileExtToUse.Append(aExt);
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HKEY hKey;
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PRBool eq = PR_FALSE;
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LONG err = ::RegOpenKeyEx( HKEY_CLASSES_ROOT, fileExtToUse.get(), 0, KEY_QUERY_VALUE, &hKey);
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if (err == ERROR_SUCCESS)
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{
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LPBYTE pBytes = GetValueBytes(hKey, "Content Type");
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if (pBytes)
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{
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eq = strcmp((const char *)pBytes, aType) == 0;
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delete[] pBytes;
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}
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::RegCloseKey(hKey);
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}
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return eq;
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}
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already_AddRefed<nsMIMEInfoWin> nsOSHelperAppService::GetByExtension(const char *aFileExt, const char *aTypeHint)
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{
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if (!aFileExt || !*aFileExt)
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return nsnull;
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// windows registry assumes your file extension is going to include the '.'.
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// so make sure it's there...
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nsCAutoString fileExtToUse;
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if (*aFileExt != '.')
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fileExtToUse = '.';
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fileExtToUse.Append(aFileExt);
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// o.t. try to get an entry from the windows registry.
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HKEY hKey;
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LONG err = ::RegOpenKeyEx( HKEY_CLASSES_ROOT, fileExtToUse.get(), 0, KEY_QUERY_VALUE, &hKey);
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if (err == ERROR_SUCCESS)
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{
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nsCAutoString typeToUse;
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if (aTypeHint) {
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typeToUse.Assign(aTypeHint);
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}
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else {
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LPBYTE pBytes = GetValueBytes( hKey, "Content Type");
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if (pBytes)
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typeToUse.Assign((const char*)pBytes);
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delete [] pBytes;
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}
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nsAutoString description;
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PRBool found = GetValueString(hKey, NULL, description);
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nsMIMEInfoWin* mimeInfo = new nsMIMEInfoWin();
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if (mimeInfo)
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{
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NS_ADDREF(mimeInfo);
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if (!typeToUse.IsEmpty())
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mimeInfo->SetMIMEType(typeToUse.get());
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// don't append the '.'
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mimeInfo->AppendExtension(fileExtToUse.get() + 1);
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mimeInfo->SetPreferredAction(nsIMIMEInfo::useSystemDefault);
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nsAutoString visibleDesc(description);
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PRInt32 pos = visibleDesc.FindChar('.');
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if (pos > 0)
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visibleDesc.Truncate(pos);
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// the format of the description usually looks like appname.version.something.
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// for now, let's try to make it pretty and just show you the appname.
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mimeInfo->SetDefaultDescription(visibleDesc.get());
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// Get other nsIMIMEInfo fields from registry, if possible.
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if ( found )
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{
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GetMIMEInfoFromRegistry( description, mimeInfo );
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}
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}
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else {
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NS_IF_RELEASE(mimeInfo); // we failed to really find an entry in the registry
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}
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// close the key
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::RegCloseKey(hKey);
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return mimeInfo;
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}
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// we failed to find a mime type.
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return nsnull;
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}
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already_AddRefed<nsIMIMEInfo> nsOSHelperAppService::GetMIMEInfoFromOS(const char *aMIMEType, const char *aFileExt, PRBool *aFound)
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{
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*aFound = PR_TRUE;
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nsCAutoString fileExtension;
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/* XXX The strcasecmp is a gross hack to wallpaper over the most common Win32
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* extension issues caused by the fix for bug 116938. See bug
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* 120327, comment 271 for why this is needed. Not even sure we
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* want to remove this once we have fixed all this stuff to work
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* right; any info we get from the OS on this type is pretty much
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* useless....
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* We'll do extension-based lookup for this type later in this function.
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*/
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if (aMIMEType && *aMIMEType && PL_strcasecmp(aMIMEType, APPLICATION_OCTET_STREAM) != 0) {
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// (1) try to use the windows mime database to see if there is a mapping to a file extension
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// (2) try to see if we have some left over 4.x registry info we can peek at...
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GetExtensionFromWindowsMimeDatabase(aMIMEType, fileExtension);
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LOG(("Windows mime database: extension '%s'\n", fileExtension.get()));
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if (fileExtension.IsEmpty()) {
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GetExtensionFrom4xRegistryInfo(aMIMEType, fileExtension);
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LOG(("4.x Registry: extension '%s'\n", fileExtension.get()));
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}
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}
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// If we found an extension for the type, do the lookup
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nsMIMEInfoWin* mi = nsnull;
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if (!fileExtension.IsEmpty())
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mi = GetByExtension(fileExtension.get(), aMIMEType).get();
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LOG(("Extension lookup on '%s' found: 0x%p\n", fileExtension.get(), mi));
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PRBool hasDefault = PR_FALSE;
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if (mi) {
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mi->GetHasDefaultHandler(&hasDefault);
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// OK. We might have the case that |aFileExt| is a valid extension for the
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// mimetype we were given. In that case, we do want to append aFileExt
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// to the mimeinfo that we have. (E.g.: We are asked for video/mpeg and
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// .mpg, but the primary extension for video/mpeg is .mpeg. But because
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// .mpg is an extension for video/mpeg content, we want to append it)
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if (aFileExt && *aFileExt && typeFromExtEquals(aFileExt, aMIMEType)) {
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LOG(("Appending extension '%s' to mimeinfo, because its mimetype is '%s'\n",
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aFileExt, aMIMEType));
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PRBool extExist = PR_FALSE;
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mi->ExtensionExists(aFileExt, &extExist);
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if (!extExist)
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mi->AppendExtension(aFileExt);
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}
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}
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if (!mi || !hasDefault) {
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nsRefPtr<nsMIMEInfoWin> miByExt = GetByExtension(aFileExt, aMIMEType);
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LOG(("Ext. lookup for '%s' found 0x%p\n", aFileExt, miByExt.get()));
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if (!miByExt && mi)
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return mi;
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if (miByExt && !mi) {
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miByExt.swap(mi);
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return mi;
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}
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if (!miByExt && !mi) {
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*aFound = PR_FALSE;
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mi = new nsMIMEInfoWin();
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if (mi) {
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NS_ADDREF(mi);
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if (aMIMEType && *aMIMEType)
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mi->SetMIMEType(aMIMEType);
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if (aFileExt && *aFileExt)
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mi->AppendExtension(aFileExt);
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}
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return mi;
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}
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// if we get here, mi has no default app. copy from extension lookup.
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nsCOMPtr<nsIFile> defaultApp;
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nsXPIDLString desc;
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miByExt->GetDefaultDescription(getter_Copies(desc));
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mi->SetDefaultDescription(desc.get());
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}
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return mi;
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}
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