Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1150 insertions, 0 deletions

diff --git a/src/libs/xpcom18a4/xpcom/components/nsNativeComponentLoader.cpp b/src/libs/xpcom18a4/xpcom/components/nsNativeComponentLoader.cpp
new file mode 100644
index 00000000..a3fd5df8
--- /dev/null
+++ b/src/libs/xpcom18a4/xpcom/components/nsNativeComponentLoader.cpp
@@ -0,0 +1,1150 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org Code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK *****
+ * This Original Code has been modified by IBM Corporation.
+ * Modifications made by IBM described herein are
+ * Copyright (c) International Business Machines
+ * Corporation, 2000
+ *
+ * Modifications to Mozilla code or documentation
+ * identified per MPL Section 3.3
+ *
+ * Date             Modified by     Description of modification
+ * 04/20/2000       IBM Corp.      Added PR_CALLBACK for Optlink use in OS2
+ */
+
+#include "prmem.h"
+#include "prerror.h"
+#include "prsystem.h"           // PR_GetDirectorySeparator
+#include "nsNativeComponentLoader.h"
+#include "nsComponentManager.h"
+#include "nsCOMPtr.h"
+#include "nsIServiceManager.h"
+#include "nsIModule.h"
+#include "xcDll.h"
+#include "nsHashtable.h"
+#include "nsXPIDLString.h"
+#include "nsCRT.h"
+#include "nsIObserverService.h"
+
+#if defined(XP_MAC)  // sdagley dougt fix
+#include <Files.h>
+#include <Errors.h>
+#include "nsILocalFileMac.h"
+#endif
+
+#include "prlog.h"
+extern PRLogModuleInfo *nsComponentManagerLog;
+
+static PRBool PR_CALLBACK
+DLLStore_Destroy(nsHashKey *aKey, void *aData, void* closure)
+{
+    nsDll* entry = NS_STATIC_CAST(nsDll*, aData);
+    delete entry;
+    return PR_TRUE;
+}
+
+nsNativeComponentLoader::nsNativeComponentLoader() :
+    mCompMgr(nsnull),
+    mLoadedDependentLibs(16, PR_TRUE),
+    mDllStore(nsnull, nsnull, DLLStore_Destroy,
+              nsnull, 256, PR_TRUE)
+{
+}
+
+NS_IMPL_THREADSAFE_ISUPPORTS2(nsNativeComponentLoader,
+                              nsIComponentLoader,
+                              nsINativeComponentLoader)
+
+NS_IMETHODIMP
+nsNativeComponentLoader::GetFactory(const nsIID & aCID,
+                                    const char *aLocation,
+                                    const char *aType,
+                                    nsIFactory **_retval)
+{
+    nsresult rv;
+
+    if (!_retval)
+        return NS_ERROR_NULL_POINTER;
+
+    /* use a hashtable of WeakRefs to store the factory object? */
+
+    /* Should this all live in xcDll? */
+    nsDll *dll;
+    rv = CreateDll(nsnull, aLocation, &dll);
+    if (NS_FAILED(rv))
+        return rv;
+
+    if (!dll)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    if (!dll->IsLoaded()) {
+#ifdef PR_LOGGING
+        nsXPIDLCString displayPath;
+        dll->GetDisplayPath(displayPath);
+
+        PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
+               ("nsNativeComponentLoader: loading \"%s\"",
+                displayPath.get()));
+#endif
+        if (!dll->Load()) {
+
+            PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
+                   ("nsNativeComponentLoader: load FAILED"));
+
+            char errorMsg[1024] = "<unknown; can't get error from NSPR>";
+
+            if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
+                PR_GetErrorText(errorMsg);
+
+            DumpLoadError(dll, "GetFactory", errorMsg);
+
+            return NS_ERROR_FAILURE;
+        }
+    }
+
+    /* Get service manager for factory */
+    nsCOMPtr<nsIServiceManager> serviceMgr;
+    rv = NS_GetServiceManager(getter_AddRefs(serviceMgr));
+    if (NS_FAILED(rv))
+        return rv;      // XXX translate error code?
+
+    rv = GetFactoryFromModule(dll, aCID, _retval);
+
+    PR_LOG(nsComponentManagerLog, NS_SUCCEEDED(rv) ? PR_LOG_DEBUG : PR_LOG_ERROR,
+           ("nsNativeComponentLoader: Factory creation %s for %s",
+            (NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"),
+            aLocation));
+
+    // If the dll failed to get us a factory. But the dll registered that
+    // it would be able to create a factory for this CID. mmh!
+    // We cannot just delete the dll as the dll could be hosting
+    // other CID for which factory creation can pass.
+    // We will just let it be. The effect will be next time we try
+    // creating the object, we will query the dll again. Since the
+    // dll is loaded, this aint a big hit. So for optimized builds
+    // this is ok to limp along.
+    NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Factory creation failed");
+
+    return rv;
+}
+
+NS_IMETHODIMP
+nsNativeComponentLoader::Init(nsIComponentManager *aCompMgr, nsISupports *aReg)
+{
+    mCompMgr = aCompMgr;
+    if (!mCompMgr)
+        return NS_ERROR_INVALID_ARG;
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNativeComponentLoader::AutoRegisterComponents(PRInt32 aWhen,
+                                                nsIFile *aDirectory)
+{
+#ifdef DEBUG
+    /* do we _really_ want to print this every time? */
+    fprintf(stderr, "nsNativeComponentLoader: autoregistering begins.\n");
+#endif
+
+    nsresult rv = RegisterComponentsInDir(aWhen, aDirectory);
+
+#ifdef DEBUG
+    fprintf(stderr, "nsNativeComponentLoader: autoregistering %s\n",
+           NS_FAILED(rv) ? "FAILED" : "succeeded");
+#endif
+
+    return rv;
+}
+
+nsresult
+nsNativeComponentLoader::RegisterComponentsInDir(PRInt32 when,
+                                                 nsIFile *dir)
+{
+    nsresult rv = NS_ERROR_FAILURE;
+    PRBool isDir = PR_FALSE;
+
+#if 0
+    // Going to many of these checks is a performance hit on the mac.
+    // Since these routines are called relatively infrequently and
+    // we will fail anyway down the line if a directory aint there,
+    // we are commenting this check out.
+
+    // Make sure we are dealing with a directory
+    rv = dir->IsDirectory(&isDir);
+    if (NS_FAILED(rv)) return rv;
+
+    if (!isDir)
+        return NS_ERROR_INVALID_ARG;
+#endif /* 0 */
+
+    // Create a directory iterator
+    nsCOMPtr<nsISimpleEnumerator> dirIterator;
+    rv = dir->GetDirectoryEntries(getter_AddRefs(dirIterator));
+
+    if (NS_FAILED(rv)) return rv;
+
+    // whip through the directory to register every file
+    nsCOMPtr<nsIFile> dirEntry;
+    PRBool more = PR_FALSE;
+
+    rv = dirIterator->HasMoreElements(&more);
+    if (NS_FAILED(rv)) return rv;
+    while (more == PR_TRUE)
+    {
+        rv = dirIterator->GetNext((nsISupports**)getter_AddRefs(dirEntry));
+        if (NS_SUCCEEDED(rv))
+        {
+            rv = dirEntry->IsDirectory(&isDir);
+            if (NS_SUCCEEDED(rv))
+            {
+                if (isDir == PR_TRUE)
+                {
+                    // This is a directory. Grovel for components into the directory.
+#ifdef RT_OS_DARWIN // But not if it's a debug bundle.
+                    nsCAutoString leafName;
+                    rv = dirEntry->GetNativeLeafName(leafName);
+                    if (   NS_FAILED(rv)
+                        || leafName.Length() < sizeof(".dSYM")
+                        || PL_strcasecmp(leafName.get() + (leafName.Length() - sizeof(".dSYM") + 1), ".dSYM"))
+#endif
+                        rv = RegisterComponentsInDir(when, dirEntry);
+                }
+                else
+                {
+                    PRBool registered;
+                    // This is a file. Try to register it.
+                    rv = AutoRegisterComponent(when, dirEntry, &registered);
+                }
+            }
+        }
+        rv = dirIterator->HasMoreElements(&more);
+        if (NS_FAILED(rv)) return rv;
+    }
+
+    return rv;
+}
+
+static nsresult PR_CALLBACK
+nsFreeLibrary(nsDll *dll, nsIServiceManager *serviceMgr, PRInt32 when)
+{
+    nsresult rv = NS_ERROR_FAILURE;
+
+    if (!dll || dll->IsLoaded() == PR_FALSE)
+    {
+        return NS_ERROR_INVALID_ARG;
+    }
+
+    // Get if the dll was marked for unload in an earlier round
+    PRBool dllMarkedForUnload = dll->IsMarkedForUnload();
+
+    // Reset dll marking for unload just in case we return with
+    // an error.
+    dll->MarkForUnload(PR_FALSE);
+
+    PRBool canUnload = PR_FALSE;
+
+    // Get the module object
+    nsCOMPtr<nsIModule> mobj;
+    /* XXXshaver cheat and use the global component manager */
+    rv = dll->GetModule(NS_STATIC_CAST(nsIComponentManager*, nsComponentManagerImpl::gComponentManager),
+                        getter_AddRefs(mobj));
+    if (NS_SUCCEEDED(rv))
+    {
+        rv = mobj->CanUnload(nsComponentManagerImpl::gComponentManager, &canUnload);
+    }
+
+    mobj = nsnull; // Release our reference to the module object
+    // When shutting down, whether we can unload the dll or not,
+    // we will shutdown the dll to release any memory it has got
+    if (when == nsIComponentManagerObsolete::NS_Shutdown)
+    {
+        dll->Shutdown();
+    }
+
+    // Check error status on CanUnload() call
+    if (NS_FAILED(rv))
+    {
+#ifdef PR_LOGGING
+        nsXPIDLCString displayPath;
+        dll->GetDisplayPath(displayPath);
+
+        PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
+               ("nsNativeComponentLoader: nsIModule::CanUnload() returned error for %s.",
+                displayPath.get()));
+#endif
+        return rv;
+    }
+
+    if (canUnload)
+    {
+        if (dllMarkedForUnload)
+        {
+#ifdef PR_LOGGING
+            nsXPIDLCString displayPath;
+            dll->GetDisplayPath(displayPath);
+
+            PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
+                   ("nsNativeComponentLoader: + Unloading \"%s\".", displayPath.get()));
+#endif
+
+#ifdef DEBUG_dougt
+            // XXX dlls aren't counting their outstanding instances correctly
+            // XXX hence, dont unload until this gets enforced.
+            rv = dll->Unload();
+#endif /* 0 */
+        }
+        else
+        {
+#ifdef PR_LOGGING
+            nsXPIDLCString displayPath;
+            dll->GetDisplayPath(displayPath);
+
+            PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
+                   ("nsNativeComponentLoader: Ready for unload \"%s\".", displayPath.get()));
+#endif
+        }
+    }
+    else
+    {
+#ifdef PR_LOGGING
+        nsXPIDLCString displayPath;
+        dll->GetDisplayPath(displayPath);
+
+        PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
+               ("nsNativeComponentLoader: NOT ready for unload %s", displayPath.get()));
+#endif
+        rv = NS_ERROR_FAILURE;
+    }
+    return rv;
+}
+
+struct freeLibrariesClosure
+{
+    nsIServiceManager *serviceMgr;
+    PRInt32 when;
+};
+
+static PRBool PR_CALLBACK
+nsFreeLibraryEnum(nsHashKey *aKey, void *aData, void* closure)
+{
+    nsDll *dll = (nsDll *) aData;
+    struct freeLibrariesClosure *callData = (struct freeLibrariesClosure *) closure;
+    nsFreeLibrary(dll,
+                  (callData ? callData->serviceMgr : NULL),
+                  (callData ? callData->when : nsIComponentManagerObsolete::NS_Timer));
+    return PR_TRUE;
+}
+
+/*
+ * SelfRegisterDll
+ *
+ * Given a dll abstraction, this will load, selfregister the dll and
+ * unload the dll.
+ *
+ */
+nsresult
+nsNativeComponentLoader::SelfRegisterDll(nsDll *dll,
+                                         const char *registryLocation,
+                                         PRBool deferred)
+{
+    // Precondition: dll is not loaded already, unless we're deferred
+    PR_ASSERT(deferred || dll->IsLoaded() == PR_FALSE);
+
+    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.
+        char errorMsg[1024] = "Cannot get error from nspr. Not enough memory.";
+        if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
+            PR_GetErrorText(errorMsg);
+
+        DumpLoadError(dll, "SelfRegisterDll", errorMsg);
+
+        return NS_ERROR_FAILURE;
+    }
+
+#ifdef PR_LOGGING
+    nsXPIDLCString displayPath;
+    dll->GetDisplayPath(displayPath);
+
+    PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
+           ("nsNativeComponentLoader: Loaded \"%s\".", displayPath.get()));
+#endif
+
+    // Tell the module to self register
+    nsCOMPtr<nsIFile> fs;
+    nsCOMPtr<nsIModule> mobj;
+    res = dll->GetModule(mCompMgr, getter_AddRefs(mobj));
+    if (NS_SUCCEEDED(res))
+    {
+        /*************************************************************
+         * WARNING: Why are use introducing 'res2' here and then     *
+         * later assigning it to 'res' rather than just using 'res'? *
+         * This is because this code turns up a code-generation bug  *
+         * in VC6 on NT. Assigning to 'res' on the next line causes  *
+         * the value of 'dll' to get nulled out! The two seem to be  *
+         * getting aliased together during compilation.              *
+         *************************************************************/
+        nsresult res2 = dll->GetDllSpec(getter_AddRefs(fs));    // don't change 'res2' -- see warning, above
+        if (NS_SUCCEEDED(res2)) {
+            // in the case of re-registering a component, we want to remove
+            // any optional data that this file may have had.
+            AddDependentLibrary(fs, nsnull);
+
+            res = mobj->RegisterSelf(mCompMgr, fs, registryLocation,
+                                     nativeComponentType);
+        }
+        else
+        {
+            res = res2;         // don't take this out -- see warning, above
+
+#ifdef PR_LOGGING
+            nsXPIDLCString displayPath;
+            dll->GetDisplayPath(displayPath);
+            PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
+                   ("nsNativeComponentLoader: dll->GetDllSpec() on %s FAILED.",
+                    displayPath.get()));
+#endif
+        }
+        mobj = NULL;    // Force a release of the Module object before unload()
+    }
+
+    // Update the timestamp and size of the dll in registry
+    // Don't enter deferred modules in the registry, because it might only be
+    // able to register on some later autoreg, after another component has been
+    // installed.
+    if (res != NS_ERROR_FACTORY_REGISTER_AGAIN) {
+        PRInt64 modTime;
+        if (!fs)
+            return res;
+
+        fs->GetLastModifiedTime(&modTime);
+        nsCOMPtr<nsIComponentLoaderManager> manager = do_QueryInterface(mCompMgr);
+        if (!manager)
+            return NS_ERROR_FAILURE;
+
+        nsCOMPtr<nsIFile> fs;
+        res = dll->GetDllSpec(getter_AddRefs(fs));
+        if (NS_FAILED(res)) return res;
+
+        manager->SaveFileInfo(fs, registryLocation, modTime);
+    }
+
+    return res;
+}
+
+//
+// MOZ_DEMANGLE_SYMBOLS is only a linux + MOZ_DEBUG thing.
+//
+
+#if defined(MOZ_DEMANGLE_SYMBOLS)
+#include "nsTraceRefcntImpl.h" // for nsTraceRefcntImpl::DemangleSymbol()
+#endif
+
+nsresult
+nsNativeComponentLoader::DumpLoadError(nsDll *dll,
+                                       const char *aCallerName,
+                                       const char *aNsprErrorMsg)
+{
+    PR_ASSERT(aCallerName != NULL);
+
+    if (nsnull == dll || nsnull == aNsprErrorMsg)
+        return NS_OK;
+
+    nsCAutoString errorMsg(aNsprErrorMsg);
+
+#if defined(MOZ_DEMANGLE_SYMBOLS)
+    // Demangle undefined symbols
+    nsCAutoString undefinedMagicString("undefined symbol:");
+
+    PRInt32 offset = errorMsg.Find(undefinedMagicString, PR_TRUE);
+
+    if (offset != kNotFound)
+    {
+        nsCAutoString symbol(errorMsg);
+        nsCAutoString demangledSymbol;
+
+        symbol.Cut(0,offset);
+
+        symbol.Cut(0,undefinedMagicString.Length());
+
+        symbol.StripWhitespace();
+
+        char demangled[4096] = "\0";
+
+        nsTraceRefcntImpl::DemangleSymbol(symbol.get(),demangled,sizeof(demangled));
+
+        if (demangled && *demangled != '\0')
+            demangledSymbol = demangled;
+
+        if (!demangledSymbol.IsEmpty())
+        {
+            nsCAutoString tmp(errorMsg);
+
+
+            tmp.Cut(offset + undefinedMagicString.Length(),
+                    tmp.Length() - offset - undefinedMagicString.Length());
+
+            tmp += " \n";
+
+            tmp += demangledSymbol;
+
+            errorMsg = tmp;
+        }
+    }
+#endif // MOZ_DEMANGLE_SYMBOLS
+    nsXPIDLCString displayPath;
+    dll->GetDisplayPath(displayPath);
+
+#ifdef DEBUG
+    fprintf(stderr,
+            "nsNativeComponentLoader: %s(%s) Load FAILED with error: %s\n",
+            aCallerName,
+            displayPath.get(),
+            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;
+
+#ifndef VBOX
+    /* 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;
+
+#else /* VBOX */
+    /* VBox: Only one valid suffix exist, so dispense with the the list. */
+# ifdef RT_OS_DARWIN
+#  ifdef VBOX_IN_32_ON_64_MAIN_API
+    static const char s_szSuff[]        = "-x86.dylib";
+#  else
+    static const char s_szSuff[]        = ".dylib";
+    static const char s_szSuffInvalid[] = "-x86.dylib";
+#  endif
+# elif defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
+#  ifdef VBOX_IN_32_ON_64_MAIN_API
+    static const char s_szSuff[]        = "-x86.dll";
+#else
+    static const char s_szSuff[]        = ".dll";
+    static const char s_szSuffInvalid[] = "-x86.dll";
+#  endif
+# else
+#  ifdef VBOX_IN_32_ON_64_MAIN_API
+    static const char s_szSuff[]        = "-x86.so";
+#else
+    static const char s_szSuff[]        = ".so";
+    static const char s_szSuffInvalid[] = "-x86.so";
+#  endif
+# endif
+
+    nsCAutoString strLeafName;
+    rv = component->GetNativeLeafName(strLeafName);
+    if (NS_FAILED(rv))
+        return rv;
+    size_t cchLeafName = strLeafName.Length();
+    if (   cchLeafName <= sizeof(s_szSuff)
+        || PL_strcasecmp(strLeafName.get() + cchLeafName - sizeof(s_szSuff) + 1, s_szSuff))
+    {
+        PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("Skipping '%s'...", strLeafName.get()));
+        return NS_OK; /* skip */
+    }
+# ifndef VBOX_IN_32_ON_64_MAIN_API
+    if (   cchLeafName >= sizeof(s_szSuffInvalid)
+        && !PL_strcasecmp(strLeafName.get() + cchLeafName - sizeof(s_szSuffInvalid) + 1, s_szSuffInvalid))
+    {
+        PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("Skipping '%s' (#2)...", strLeafName.get()));
+        return NS_OK; /* skip */
+    }
+# endif
+    PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("... '%s'", strLeafName.get()));
+#endif /* VBOX */
+
+    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, "nNCL: 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, "nNCL: registered deferred, %d left\n",
+                mDeferredComponents.Count());
+    else
+        fprintf(stderr, "nNCL: 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);
+}
+
+
+NS_IMETHODIMP
+nsNativeComponentLoader::AddDependentLibrary(nsIFile* aFile, const char* libName)
+{
+    nsCOMPtr<nsIComponentLoaderManager> manager = do_QueryInterface(mCompMgr);
+    if (!manager)
+    {
+        NS_WARNING("Something is terribly wrong");
+        return NS_ERROR_FAILURE;
+    }
+
+    // the native component loader uses the optional data
+    // to store a space delimited list of dependent library
+    // names
+
+    if (!libName)
+    {
+        manager->SetOptionalData(aFile, nsnull, nsnull);
+        return NS_OK;
+    }
+
+    nsXPIDLCString data;
+    manager->GetOptionalData(aFile, nsnull, getter_Copies(data));
+
+    if (!data.IsEmpty())
+        data.AppendLiteral(" ");
+
+    data.Append(nsDependentCString(libName));
+
+    manager->SetOptionalData(aFile, nsnull, data);
+    return NS_OK;
+}