зеркало из https://github.com/mozilla/pjs.git
1060 строки
34 KiB
C++
1060 строки
34 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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 mozilla.org Code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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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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*
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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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* This Original Code has been modified by IBM Corporation.
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* Modifications made by IBM described herein are
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* Copyright (c) International Business Machines
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* Corporation, 2000
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*
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* Modifications to Mozilla code or documentation
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* identified per MPL Section 3.3
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*
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* Date Modified by Description of modification
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* 04/20/2000 IBM Corp. Added PR_CALLBACK for Optlink use in OS2
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*/
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#include "prmem.h"
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#include "prerror.h"
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#include "prsystem.h" // PR_GetDirectorySeparator
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#include "nsNativeComponentLoader.h"
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#include "nsComponentManager.h"
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#include "nsCOMPtr.h"
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#include "nsIServiceManager.h"
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#include "nsIModule.h"
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#include "xcDll.h"
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#include "nsHashtable.h"
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#include "nsXPIDLString.h"
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#include "nsCRT.h"
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#include "nsIObserverService.h"
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#if defined(XP_MAC) // sdagley dougt fix
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#include <Files.h>
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#include <Errors.h>
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#include "nsILocalFileMac.h"
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#endif
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#include "prlog.h"
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extern PRLogModuleInfo *nsComponentManagerLog;
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static PRBool PR_CALLBACK
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DLLStore_Destroy(nsHashKey *aKey, void *aData, void* closure)
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{
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nsDll* entry = NS_STATIC_CAST(nsDll*, aData);
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delete entry;
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return PR_TRUE;
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}
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nsNativeComponentLoader::nsNativeComponentLoader() :
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mCompMgr(nsnull),
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mDllStore(nsnull, nsnull, DLLStore_Destroy,
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nsnull, 256, PR_TRUE)
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{
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}
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NS_IMPL_THREADSAFE_ISUPPORTS1(nsNativeComponentLoader,
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nsIComponentLoader)
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NS_IMETHODIMP
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nsNativeComponentLoader::GetFactory(const nsIID & aCID,
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const char *aLocation,
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const char *aType,
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nsIFactory **_retval)
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{
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nsresult rv;
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if (!_retval)
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return NS_ERROR_NULL_POINTER;
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/* use a hashtable of WeakRefs to store the factory object? */
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/* Should this all live in xcDll? */
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nsDll *dll;
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rv = CreateDll(nsnull, aLocation, &dll);
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if (NS_FAILED(rv))
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return rv;
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if (!dll)
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return NS_ERROR_OUT_OF_MEMORY;
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if (!dll->IsLoaded()) {
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#ifdef PR_LOGGING
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
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("nsNativeComponentLoader: loading \"%s\"",
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displayPath.get()));
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#endif
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if (!dll->Load()) {
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PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
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("nsNativeComponentLoader: load FAILED"));
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char errorMsg[1024] = "<unknown; can't get error from NSPR>";
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if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
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PR_GetErrorText(errorMsg);
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DumpLoadError(dll, "GetFactory", errorMsg);
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return NS_ERROR_FAILURE;
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}
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}
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/* Get service manager for factory */
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nsCOMPtr<nsIServiceManager> serviceMgr;
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rv = NS_GetServiceManager(getter_AddRefs(serviceMgr));
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if (NS_FAILED(rv))
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return rv; // XXX translate error code?
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rv = GetFactoryFromModule(dll, aCID, _retval);
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PR_LOG(nsComponentManagerLog, NS_SUCCEEDED(rv) ? PR_LOG_DEBUG : PR_LOG_ERROR,
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("nsNativeComponentLoader: Factory creation %s for %s",
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(NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"),
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aLocation));
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// If the dll failed to get us a factory. But the dll registered that
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// it would be able to create a factory for this CID. mmh!
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// We cannot just delete the dll as the dll could be hosting
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// other CID for which factory creation can pass.
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// We will just let it be. The effect will be next time we try
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// creating the object, we will query the dll again. Since the
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// dll is loaded, this aint a big hit. So for optimized builds
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// this is ok to limp along.
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NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Factory creation failed");
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return rv;
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}
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NS_IMETHODIMP
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nsNativeComponentLoader::Init(nsIComponentManager *aCompMgr, nsISupports *aReg)
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{
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mCompMgr = aCompMgr;
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if (!mCompMgr)
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return NS_ERROR_INVALID_ARG;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNativeComponentLoader::AutoRegisterComponents(PRInt32 aWhen,
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nsIFile *aDirectory)
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{
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#ifdef DEBUG
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/* do we _really_ want to print this every time? */
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fprintf(stderr, "nsNativeComponentLoader: autoregistering begins.\n");
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#endif
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nsresult rv = RegisterComponentsInDir(aWhen, aDirectory);
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#ifdef DEBUG
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fprintf(stderr, "nsNativeComponentLoader: autoregistering %s\n",
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NS_FAILED(rv) ? "FAILED" : "succeeded");
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#endif
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return rv;
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}
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nsresult
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nsNativeComponentLoader::RegisterComponentsInDir(PRInt32 when,
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nsIFile *dir)
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{
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nsresult rv = NS_ERROR_FAILURE;
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PRBool isDir = PR_FALSE;
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#if 0
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// Going to many of these checks is a performance hit on the mac.
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// Since these routines are called relatively infrequently and
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// we will fail anyway down the line if a directory aint there,
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// we are commenting this check out.
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// Make sure we are dealing with a directory
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rv = dir->IsDirectory(&isDir);
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if (NS_FAILED(rv)) return rv;
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if (!isDir)
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return NS_ERROR_INVALID_ARG;
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#endif /* 0 */
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// Create a directory iterator
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nsCOMPtr<nsISimpleEnumerator> dirIterator;
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rv = dir->GetDirectoryEntries(getter_AddRefs(dirIterator));
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if (NS_FAILED(rv)) return rv;
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// whip through the directory to register every file
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nsCOMPtr<nsIFile> dirEntry;
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PRBool more = PR_FALSE;
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rv = dirIterator->HasMoreElements(&more);
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if (NS_FAILED(rv)) return rv;
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while (more == PR_TRUE)
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{
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rv = dirIterator->GetNext((nsISupports**)getter_AddRefs(dirEntry));
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if (NS_SUCCEEDED(rv))
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{
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rv = dirEntry->IsDirectory(&isDir);
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if (NS_SUCCEEDED(rv))
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{
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if (isDir == PR_TRUE)
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{
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// This is a directory. Grovel for components into the directory.
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rv = RegisterComponentsInDir(when, dirEntry);
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}
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else
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{
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PRBool registered;
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// This is a file. Try to register it.
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rv = AutoRegisterComponent(when, dirEntry, ®istered);
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}
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}
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}
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rv = dirIterator->HasMoreElements(&more);
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if (NS_FAILED(rv)) return rv;
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}
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return rv;
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}
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static nsresult PR_CALLBACK
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nsFreeLibrary(nsDll *dll, nsIServiceManager *serviceMgr, PRInt32 when)
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{
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nsresult rv = NS_ERROR_FAILURE;
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if (!dll || dll->IsLoaded() == PR_FALSE)
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{
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return NS_ERROR_INVALID_ARG;
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}
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// Get if the dll was marked for unload in an earlier round
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PRBool dllMarkedForUnload = dll->IsMarkedForUnload();
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// Reset dll marking for unload just in case we return with
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// an error.
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dll->MarkForUnload(PR_FALSE);
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PRBool canUnload = PR_FALSE;
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// Get the module object
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nsCOMPtr<nsIModule> mobj;
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/* XXXshaver cheat and use the global component manager */
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rv = dll->GetModule(NS_STATIC_CAST(nsIComponentManager*, nsComponentManagerImpl::gComponentManager),
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getter_AddRefs(mobj));
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if (NS_SUCCEEDED(rv))
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{
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rv = mobj->CanUnload(nsComponentManagerImpl::gComponentManager, &canUnload);
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}
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mobj = nsnull; // Release our reference to the module object
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// When shutting down, whether we can unload the dll or not,
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// we will shutdown the dll to release any memory it has got
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if (when == nsIComponentManagerObsolete::NS_Shutdown)
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{
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dll->Shutdown();
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}
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// Check error status on CanUnload() call
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if (NS_FAILED(rv))
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{
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#ifdef PR_LOGGING
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
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("nsNativeComponentLoader: nsIModule::CanUnload() returned error for %s.",
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displayPath.get()));
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#endif
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return rv;
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}
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if (canUnload)
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{
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if (dllMarkedForUnload)
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{
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#ifdef PR_LOGGING
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
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("nsNativeComponentLoader: + Unloading \"%s\".", displayPath.get()));
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#endif
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#ifdef DEBUG_dougt
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// XXX dlls aren't counting their outstanding instances correctly
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// XXX hence, dont unload until this gets enforced.
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rv = dll->Unload();
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#endif /* 0 */
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}
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else
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{
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#ifdef PR_LOGGING
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
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("nsNativeComponentLoader: Ready for unload \"%s\".", displayPath.get()));
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#endif
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}
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}
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else
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{
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#ifdef PR_LOGGING
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
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("nsNativeComponentLoader: NOT ready for unload %s", displayPath.get()));
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#endif
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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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struct freeLibrariesClosure
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{
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nsIServiceManager *serviceMgr;
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PRInt32 when;
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};
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static PRBool PR_CALLBACK
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nsFreeLibraryEnum(nsHashKey *aKey, void *aData, void* closure)
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{
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nsDll *dll = (nsDll *) aData;
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struct freeLibrariesClosure *callData = (struct freeLibrariesClosure *) closure;
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nsFreeLibrary(dll,
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(callData ? callData->serviceMgr : NULL),
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(callData ? callData->when : nsIComponentManagerObsolete::NS_Timer));
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return PR_TRUE;
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}
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/*
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* SelfRegisterDll
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*
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* Given a dll abstraction, this will load, selfregister the dll and
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* unload the dll.
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*
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*/
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nsresult
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nsNativeComponentLoader::SelfRegisterDll(nsDll *dll,
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const char *registryLocation,
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PRBool deferred)
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{
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// Precondition: dll is not loaded already, unless we're deferred
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PR_ASSERT(deferred || dll->IsLoaded() == PR_FALSE);
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nsresult res;
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nsCOMPtr<nsIServiceManager> serviceMgr;
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res = NS_GetServiceManager(getter_AddRefs(serviceMgr));
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if (NS_FAILED(res)) return res;
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if (dll->Load() == PR_FALSE)
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{
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// Cannot load. Probably not a dll.
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char errorMsg[1024] = "Cannot get error from nspr. Not enough memory.";
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if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
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PR_GetErrorText(errorMsg);
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DumpLoadError(dll, "SelfRegisterDll", errorMsg);
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return NS_ERROR_FAILURE;
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}
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#ifdef PR_LOGGING
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
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("nsNativeComponentLoader: Loaded \"%s\".", displayPath.get()));
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#endif
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// Tell the module to self register
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nsCOMPtr<nsIFile> fs;
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nsCOMPtr<nsIModule> mobj;
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res = dll->GetModule(mCompMgr, getter_AddRefs(mobj));
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if (NS_SUCCEEDED(res))
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{
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/*************************************************************
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* WARNING: Why are use introducing 'res2' here and then *
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* later assigning it to 'res' rather than just using 'res'? *
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* This is because this code turns up a code-generation bug *
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* in VC6 on NT. Assigning to 'res' on the next line causes *
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* the value of 'dll' to get nulled out! The two seem to be *
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* getting aliased together during compilation. *
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*************************************************************/
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nsresult res2 = dll->GetDllSpec(getter_AddRefs(fs)); // don't change 'res2' -- see warning, above
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if (NS_SUCCEEDED(res2)) {
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res = mobj->RegisterSelf(mCompMgr, fs, registryLocation,
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nativeComponentType);
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}
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else
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{
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res = res2; // don't take this out -- see warning, above
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#ifdef PR_LOGGING
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
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("nsNativeComponentLoader: dll->GetDllSpec() on %s FAILED.",
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displayPath.get()));
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#endif
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}
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mobj = NULL; // Force a release of the Module object before unload()
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}
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// Update the timestamp and size of the dll in registry
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// Don't enter deferred modules in the registry, because it might only be
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// able to register on some later autoreg, after another component has been
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// installed.
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if (res != NS_ERROR_FACTORY_REGISTER_AGAIN) {
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PRInt64 modTime;
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if (!fs)
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return res;
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fs->GetLastModifiedTime(&modTime);
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nsCOMPtr<nsIComponentLoaderManager> manager = do_QueryInterface(mCompMgr);
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if (!manager)
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIFile> fs;
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res = dll->GetDllSpec(getter_AddRefs(fs));
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if (NS_FAILED(res)) return res;
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manager->SaveFileInfo(fs, registryLocation, modTime);
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}
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return res;
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}
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//
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// MOZ_DEMANGLE_SYMBOLS is only a linux + MOZ_DEBUG thing.
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//
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#if defined(MOZ_DEMANGLE_SYMBOLS)
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#include "nsTraceRefcntImpl.h" // for nsTraceRefcntImpl::DemangleSymbol()
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#endif
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nsresult
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nsNativeComponentLoader::DumpLoadError(nsDll *dll,
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const char *aCallerName,
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const char *aNsprErrorMsg)
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{
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PR_ASSERT(aCallerName != NULL);
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if (nsnull == dll || nsnull == aNsprErrorMsg)
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return NS_OK;
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nsCAutoString errorMsg(aNsprErrorMsg);
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#if defined(MOZ_DEMANGLE_SYMBOLS)
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// Demangle undefined symbols
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nsCAutoString undefinedMagicString("undefined symbol:");
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PRInt32 offset = errorMsg.Find(undefinedMagicString, PR_TRUE);
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if (offset != kNotFound)
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{
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nsCAutoString symbol(errorMsg);
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nsCAutoString demangledSymbol;
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symbol.Cut(0,offset);
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symbol.Cut(0,undefinedMagicString.Length());
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symbol.StripWhitespace();
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char demangled[4096] = "\0";
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nsTraceRefcntImpl::DemangleSymbol(symbol.get(),demangled,sizeof(demangled));
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if (demangled && *demangled != '\0')
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demangledSymbol = demangled;
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if (!demangledSymbol.IsEmpty())
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{
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nsCAutoString tmp(errorMsg);
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tmp.Cut(offset + undefinedMagicString.Length(),
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tmp.Length() - offset - undefinedMagicString.Length());
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tmp += " \n";
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tmp += demangledSymbol;
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errorMsg = tmp;
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}
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}
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#endif // MOZ_DEMANGLE_SYMBOLS
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nsXPIDLCString displayPath;
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dll->GetDisplayPath(displayPath);
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#ifdef DEBUG
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fprintf(stderr,
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"nsNativeComponentLoader: %s(%s) Load FAILED with error: %s\n",
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aCallerName,
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displayPath.get(),
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errorMsg.get());
|
|
#endif
|
|
|
|
// Do NSPR log
|
|
#ifdef PR_LOGGING
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
|
|
("nsNativeComponentLoader: %s(%s) Load FAILED with error: %s",
|
|
aCallerName,
|
|
displayPath.get(),
|
|
errorMsg.get()));
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsNativeComponentLoader::SelfUnregisterDll(nsDll *dll)
|
|
{
|
|
nsresult res;
|
|
nsCOMPtr<nsIServiceManager> serviceMgr;
|
|
res = NS_GetServiceManager(getter_AddRefs(serviceMgr));
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
if (dll->Load() == PR_FALSE)
|
|
{
|
|
// Cannot load. Probably not a dll.
|
|
return(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
// Tell the module to self register
|
|
nsCOMPtr<nsIModule> mobj;
|
|
res = dll->GetModule(mCompMgr, getter_AddRefs(mobj));
|
|
if (NS_SUCCEEDED(res))
|
|
{
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
|
|
("nsNativeComponentLoader: %s using nsIModule to unregister self.", displayPath.get()));
|
|
#endif
|
|
nsCOMPtr<nsIFile> fs;
|
|
res = dll->GetDllSpec(getter_AddRefs(fs));
|
|
if (NS_FAILED(res)) return res;
|
|
// Get registry location for spec
|
|
nsXPIDLCString registryName;
|
|
|
|
// what I want to do here is QI for a Component Registration Manager. Since this
|
|
// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
|
|
nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &res);
|
|
if (obsoleteManager)
|
|
res = obsoleteManager->RegistryLocationForSpec(fs, getter_Copies(registryName));
|
|
|
|
if (NS_FAILED(res)) return res;
|
|
mobj->UnregisterSelf(mCompMgr, fs, registryName);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
nsresult
|
|
nsNativeComponentLoader::AutoUnregisterComponent(PRInt32 when,
|
|
nsIFile *component,
|
|
PRBool *unregistered)
|
|
{
|
|
|
|
nsresult rv = NS_ERROR_FAILURE;
|
|
|
|
*unregistered = PR_FALSE;
|
|
|
|
nsXPIDLCString persistentDescriptor;
|
|
// what I want to do here is QI for a Component Registration Manager. Since this
|
|
// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
|
|
nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &rv);
|
|
if (obsoleteManager)
|
|
rv = obsoleteManager->RegistryLocationForSpec(component,
|
|
getter_Copies(persistentDescriptor));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
// Notify observers, if any, of autoregistration work
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
do_GetService("@mozilla.org/observer-service;1", &rv);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
nsCOMPtr<nsIServiceManager> mgr;
|
|
rv = NS_GetServiceManager(getter_AddRefs(mgr));
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
(void) observerService->NotifyObservers(mgr,
|
|
NS_XPCOM_AUTOREGISTRATION_OBSERVER_ID,
|
|
NS_LITERAL_STRING("Unregistering native component").get());
|
|
}
|
|
}
|
|
|
|
nsDll *dll = NULL;
|
|
rv = CreateDll(component, persistentDescriptor, &dll);
|
|
if (NS_FAILED(rv) || dll == NULL) return rv;
|
|
|
|
rv = SelfUnregisterDll(dll);
|
|
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
|
|
PR_LOG(nsComponentManagerLog, NS_SUCCEEDED(rv) ? PR_LOG_DEBUG : PR_LOG_ERROR,
|
|
("nsNativeComponentLoader: AutoUnregistration for %s %s.",
|
|
(NS_FAILED(rv) ? "FAILED" : "succeeded"), displayPath.get()));
|
|
#endif
|
|
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// Remove any autoreg info about this dll
|
|
nsCStringKey key(persistentDescriptor);
|
|
mDllStore.RemoveAndDelete(&key);
|
|
|
|
nsCOMPtr<nsIComponentLoaderManager> manager = do_QueryInterface(mCompMgr);
|
|
NS_ASSERTION(manager, "Something is terribly wrong");
|
|
|
|
manager->RemoveFileInfo(component, nsnull);
|
|
|
|
*unregistered = PR_TRUE;
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsNativeComponentLoader::AutoRegisterComponent(PRInt32 when,
|
|
nsIFile *component,
|
|
PRBool *registered)
|
|
{
|
|
nsresult rv;
|
|
if (!registered)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*registered = PR_FALSE;
|
|
|
|
/* this should be a pref or registry entry, or something */
|
|
static const char *ValidDllExtensions[] = {
|
|
".dll", /* Windows */
|
|
".so", /* Unix */
|
|
".shlb", /* Mac ? */
|
|
".dso", /* Unix ? */
|
|
".dylib", /* Unix: Mach */
|
|
".so.1.0", /* Unix: BSD */
|
|
".sl", /* Unix: HP-UX */
|
|
#if defined(VMS)
|
|
".exe", /* Open VMS */
|
|
#endif
|
|
".dlm", /* new for all platforms */
|
|
NULL
|
|
};
|
|
|
|
*registered = PR_FALSE;
|
|
|
|
#if 0
|
|
// This is a performance hit on mac. Since we have already checked
|
|
// this; plus is we dont, load will fail anyway later on, this
|
|
// is being commented out.
|
|
|
|
// Ensure we are dealing with a file as opposed to a dir
|
|
PRBool b = PR_FALSE;
|
|
|
|
rv = component->IsFile(&b);
|
|
if (NS_FAILED(rv) || !b)
|
|
return rv;
|
|
#endif /* 0 */
|
|
|
|
// deal only with files that have a valid extension
|
|
PRBool validExtension = PR_FALSE;
|
|
|
|
#if defined(XP_MAC) // sdagley dougt fix
|
|
// rjc - on Mac, check the file's type code (skip checking the creator code)
|
|
|
|
nsCOMPtr<nsILocalFileMac> localFileMac = do_QueryInterface(component);
|
|
if (localFileMac)
|
|
{
|
|
OSType type;
|
|
rv = localFileMac->GetFileType(&type);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
// on Mac, Mozilla shared libraries are of type 'shlb'
|
|
// Note: we don't check the creator (which for Mozilla is 'MOZZ')
|
|
// so that 3rd party shared libraries will be noticed!
|
|
validExtension = ((type == 'shlb') || (type == 'NSPL'));
|
|
}
|
|
}
|
|
|
|
#else
|
|
nsCAutoString leafName;
|
|
rv = component->GetNativeLeafName(leafName);
|
|
if (NS_FAILED(rv)) return rv;
|
|
int flen = leafName.Length();
|
|
for (int i=0; ValidDllExtensions[i] != NULL; i++)
|
|
{
|
|
int extlen = PL_strlen(ValidDllExtensions[i]);
|
|
|
|
// Does fullname end with this extension
|
|
if (flen >= extlen &&
|
|
!PL_strcasecmp(leafName.get() + (flen - extlen), ValidDllExtensions[i])
|
|
)
|
|
{
|
|
validExtension = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (validExtension == PR_FALSE)
|
|
// Skip invalid extensions
|
|
return NS_OK;
|
|
|
|
nsXPIDLCString persistentDescriptor;
|
|
// what I want to do here is QI for a Component Registration Manager. Since this
|
|
// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
|
|
nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &rv);
|
|
if (obsoleteManager)
|
|
rv = obsoleteManager->RegistryLocationForSpec(component,
|
|
getter_Copies(persistentDescriptor));
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
nsCStringKey key(persistentDescriptor);
|
|
|
|
// Get the registry representation of the dll, if any
|
|
nsDll *dll;
|
|
rv = CreateDll(component, persistentDescriptor, &dll);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
if (dll != NULL)
|
|
{
|
|
// We already have seen this dll. Check if this dll changed
|
|
if (!dll->HasChanged())
|
|
{
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
|
|
// Dll hasn't changed. Skip.
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
|
|
("nsNativeComponentLoader: + nsDll not changed \"%s\". Skipping...",
|
|
displayPath.get()));
|
|
#endif
|
|
*registered = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
// Aagh! the dll has changed since the last time we saw it.
|
|
// re-register dll
|
|
|
|
|
|
// Notify observers, if any, of autoregistration work
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
do_GetService("@mozilla.org/observer-service;1", &rv);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
nsCOMPtr<nsIServiceManager> mgr;
|
|
rv = NS_GetServiceManager(getter_AddRefs(mgr));
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
// this string can't come from a string bundle, because we
|
|
// don't have string bundles yet.
|
|
NS_ConvertASCIItoUCS2 fileName("(no name)");
|
|
|
|
// get the file name
|
|
nsCOMPtr<nsIFile> dllSpec;
|
|
if (NS_SUCCEEDED(dll->GetDllSpec(getter_AddRefs(dllSpec))) && dllSpec)
|
|
{
|
|
dllSpec->GetLeafName(fileName);
|
|
}
|
|
|
|
// this string can't come from a string bundle, because we
|
|
// don't have string bundles yet.
|
|
(void) observerService->
|
|
NotifyObservers(mgr,
|
|
NS_XPCOM_AUTOREGISTRATION_OBSERVER_ID,
|
|
PromiseFlatString(NS_LITERAL_STRING("Registering native component ") +
|
|
fileName).get());
|
|
}
|
|
}
|
|
|
|
if (dll->IsLoaded())
|
|
{
|
|
// We loaded the old version of the dll and now we find that the
|
|
// on-disk copy if newer. Try to unload the dll.
|
|
nsCOMPtr<nsIServiceManager> serviceMgr;
|
|
rv = NS_GetServiceManager(getter_AddRefs(serviceMgr));
|
|
|
|
rv = nsFreeLibrary(dll, serviceMgr, when);
|
|
if (NS_FAILED(rv))
|
|
{
|
|
// THIS IS THE WORST SITUATION TO BE IN.
|
|
// Dll doesn't want to be unloaded. Cannot re-register
|
|
// this dll.
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
|
|
("nsNativeComponentLoader: *** Dll already loaded. "
|
|
"Cannot unload either. Hence cannot re-register "
|
|
"\"%s\". Skipping...", displayPath.get()));
|
|
#endif
|
|
return rv;
|
|
}
|
|
else {
|
|
// dll doesn't have a CanUnload proc. Guess it is
|
|
// ok to unload it.
|
|
dll->Unload();
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
|
|
("nsNativeComponentLoader: + Unloading \"%s\". (no CanUnloadProc).",
|
|
displayPath.get()));
|
|
#endif
|
|
}
|
|
|
|
} // dll isloaded
|
|
|
|
// Sanity.
|
|
if (dll->IsLoaded())
|
|
{
|
|
// We went through all the above to make sure the dll
|
|
// is unloaded. And here we are with the dll still
|
|
// loaded. Whoever taught dp programming...
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
|
|
("nsNativeComponentLoader: Dll still loaded. Cannot re-register "
|
|
"\"%s\". Skipping...", displayPath.get()));
|
|
#endif
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
} // dll != NULL
|
|
else
|
|
{
|
|
// Create and add the dll to the mDllStore
|
|
// It is ok to do this even if the creation of nsDll
|
|
// didnt succeed. That way we wont do this again
|
|
// when we encounter the same dll.
|
|
dll = new nsDll(component, this);
|
|
if (dll == NULL)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
mDllStore.Put(&key, (void *) dll);
|
|
} // dll == NULL
|
|
|
|
// Either we are seeing the dll for the first time or the dll has
|
|
// changed since we last saw it and it is unloaded successfully.
|
|
//
|
|
// Now we can try register the dll for sure.
|
|
nsresult res = SelfRegisterDll(dll, persistentDescriptor, PR_FALSE);
|
|
if (NS_FAILED(res))
|
|
{
|
|
if (res == NS_ERROR_FACTORY_REGISTER_AGAIN) {
|
|
/* defer for later loading */
|
|
mDeferredComponents.AppendElement(dll);
|
|
*registered = PR_TRUE;
|
|
return NS_OK;
|
|
} else {
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
|
|
("nsNativeComponentLoader: Autoregistration FAILED for "
|
|
"\"%s\". Skipping...", displayPath.get()));
|
|
#endif
|
|
return NS_ERROR_FACTORY_NOT_REGISTERED;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
#ifdef PR_LOGGING
|
|
nsXPIDLCString displayPath;
|
|
dll->GetDisplayPath(displayPath);
|
|
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
|
|
("nsNativeComponentLoader: Autoregistration Passed for "
|
|
"\"%s\".", displayPath.get()));
|
|
#endif
|
|
// Marking dll along with modified time and size in the
|
|
// registry happens at PlatformRegister(). No need to do it
|
|
// here again.
|
|
*registered = PR_TRUE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsNativeComponentLoader::RegisterDeferredComponents(PRInt32 aWhen,
|
|
PRBool *aRegistered)
|
|
{
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "nsNativeComponentLoader: registering deferred (%d)\n",
|
|
mDeferredComponents.Count());
|
|
#endif
|
|
*aRegistered = PR_FALSE;
|
|
if (!mDeferredComponents.Count())
|
|
return NS_OK;
|
|
|
|
for (int i = mDeferredComponents.Count() - 1; i >= 0; i--) {
|
|
nsDll *dll = NS_STATIC_CAST(nsDll *, mDeferredComponents[i]);
|
|
nsresult rv = SelfRegisterDll(dll,
|
|
nsnull,
|
|
PR_TRUE);
|
|
if (rv != NS_ERROR_FACTORY_REGISTER_AGAIN) {
|
|
if (NS_SUCCEEDED(rv))
|
|
*aRegistered = PR_TRUE;
|
|
mDeferredComponents.RemoveElementAt(i);
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
if (*aRegistered)
|
|
fprintf(stderr,
|
|
"nsNativeComponentLoader: registered deferred, %d left\n",
|
|
mDeferredComponents.Count());
|
|
else
|
|
fprintf(stderr,
|
|
"nsNativeComponentLoader: "
|
|
"didn't register any components, %d left\n",
|
|
mDeferredComponents.Count());
|
|
#endif
|
|
/* are there any fatal errors? */
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsNativeComponentLoader::OnRegister(const nsIID &aCID, const char *aType,
|
|
const char *aClassName,
|
|
const char *aContractID,
|
|
const char *aLocation,
|
|
PRBool aReplace,
|
|
PRBool aPersist)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsNativeComponentLoader::UnloadAll(PRInt32 aWhen)
|
|
{
|
|
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsNativeComponentLoader: Unloading...."));
|
|
|
|
struct freeLibrariesClosure callData;
|
|
callData.serviceMgr = NULL; // XXX need to get this as a parameter
|
|
callData.when = aWhen;
|
|
|
|
// Cycle through the dlls checking to see if they want to be unloaded
|
|
mDllStore.Enumerate(nsFreeLibraryEnum, &callData);
|
|
return NS_OK;
|
|
}
|
|
|
|
//
|
|
// CreateDll
|
|
// The only way to create a dll or get it from the dll cache. This will
|
|
// be called in multiple situations:
|
|
//
|
|
// 1. Autoregister will create one for each dll it is trying to register. This
|
|
// call will be passing a spec in.
|
|
// {spec, NULL, 0, 0}
|
|
//
|
|
// 2. GetFactory() This will call CreateDll() with a null spec but will give
|
|
// the registry represented name of the dll. If modtime and size are zero,
|
|
// we will go the registry to find the right modtime and size.
|
|
// {NULL, rel:libpref.so, 0, 0}
|
|
//
|
|
// 3. Prepopulation of dllCache A dll object created off a registry entry.
|
|
// Specifically dll name is stored in rel: or abs: or lib: formats in the
|
|
// registry along with its lastModTime and fileSize.
|
|
// {NULL, rel:libpref.so, 8985659, 20987}
|
|
nsresult
|
|
nsNativeComponentLoader::CreateDll(nsIFile *aSpec,
|
|
const char *aLocation,
|
|
nsDll **aDll)
|
|
{
|
|
nsDll *dll;
|
|
nsCOMPtr<nsIFile> dllSpec;
|
|
nsCOMPtr<nsIFile> spec;
|
|
nsresult rv;
|
|
|
|
nsCStringKey key(aLocation);
|
|
dll = (nsDll *)mDllStore.Get(&key);
|
|
if (dll)
|
|
{
|
|
*aDll = dll;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!aSpec)
|
|
{
|
|
// what I want to do here is QI for a Component Registration Manager. Since this
|
|
// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
|
|
nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &rv);
|
|
if (obsoleteManager)
|
|
rv = obsoleteManager->SpecForRegistryLocation(aLocation,
|
|
getter_AddRefs(spec));
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
}
|
|
else
|
|
{
|
|
spec = aSpec;
|
|
}
|
|
|
|
if (!dll)
|
|
{
|
|
dll = new nsDll(spec, this);
|
|
if (!dll)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
*aDll = dll;
|
|
mDllStore.Put(&key, dll);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsNativeComponentLoader::GetFactoryFromModule(nsDll *aDll, const nsCID &aCID,
|
|
nsIFactory **aFactory)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsIModule> module;
|
|
rv = aDll->GetModule(mCompMgr, getter_AddRefs(module));
|
|
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
return module->GetClassObject(mCompMgr, aCID, NS_GET_IID(nsIFactory),
|
|
(void **)aFactory);
|
|
}
|