nsNativeComponentLoader.cpp@ 95259

Last change on this file since 95259 was 48282, checked in by vboxsync, 11 years ago
32-bit main API on 64-bit solaris.
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1	/* -- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -- */
2	/* *** BEGIN LICENSE BLOCK ***
3	* Version: MPL 1.1/GPL 2.0/LGPL 2.1
4	*
5	* The contents of this file are subject to the Mozilla Public License Version
6	* 1.1 (the "License"); you may not use this file except in compliance with
7	* the License. You may obtain a copy of the License at
8	* http://www.mozilla.org/MPL/
9	*
10	* Software distributed under the License is distributed on an "AS IS" basis,
11	* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12	* for the specific language governing rights and limitations under the
13	* License.
14	*
15	* The Original Code is mozilla.org Code.
16	*
17	* The Initial Developer of the Original Code is
18	* Netscape Communications Corporation.
19	* Portions created by the Initial Developer are Copyright (C) 1999
20	* the Initial Developer. All Rights Reserved.
21	*
22	* Contributor(s):
23	*
24	* Alternatively, the contents of this file may be used under the terms of
25	* either of the GNU General Public License Version 2 or later (the "GPL"),
26	* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27	* in which case the provisions of the GPL or the LGPL are applicable instead
28	* of those above. If you wish to allow use of your version of this file only
29	* under the terms of either the GPL or the LGPL, and not to allow others to
30	* use your version of this file under the terms of the MPL, indicate your
31	* decision by deleting the provisions above and replace them with the notice
32	* and other provisions required by the GPL or the LGPL. If you do not delete
33	* the provisions above, a recipient may use your version of this file under
34	* the terms of any one of the MPL, the GPL or the LGPL.
35	*
36	* *** END LICENSE BLOCK ***
37	* This Original Code has been modified by IBM Corporation.
38	* Modifications made by IBM described herein are
39	* Copyright (c) International Business Machines
40	* Corporation, 2000
41	*
42	* Modifications to Mozilla code or documentation
43	* identified per MPL Section 3.3
44	*
45	* Date Modified by Description of modification
46	* 04/20/2000 IBM Corp. Added PR_CALLBACK for Optlink use in OS2
47	*/
48
49	#include "prmem.h"
50	#include "prerror.h"
51	#include "prsystem.h" // PR_GetDirectorySeparator
52	#include "nsNativeComponentLoader.h"
53	#include "nsComponentManager.h"
54	#include "nsCOMPtr.h"
55	#include "nsIServiceManager.h"
56	#include "nsIModule.h"
57	#include "xcDll.h"
58	#include "nsHashtable.h"
59	#include "nsXPIDLString.h"
60	#include "nsCRT.h"
61	#include "nsIObserverService.h"
62
63	#if defined(XP_MAC) // sdagley dougt fix
64	#include <Files.h>
65	#include <Errors.h>
66	#include "nsILocalFileMac.h"
67	#endif
68
69	#include "prlog.h"
70	extern PRLogModuleInfo *nsComponentManagerLog;
71
72	static PRBool PR_CALLBACK
73	DLLStore_Destroy(nsHashKey aKey, void aData, void* closure)
74	{
75	nsDll* entry = NS_STATIC_CAST(nsDll*, aData);
76	delete entry;
77	return PR_TRUE;
78	}
79
80	nsNativeComponentLoader::nsNativeComponentLoader() :
81	mCompMgr(nsnull),
82	mLoadedDependentLibs(16, PR_TRUE),
83	mDllStore(nsnull, nsnull, DLLStore_Destroy,
84	nsnull, 256, PR_TRUE)
85	{
86	}
87
88	NS_IMPL_THREADSAFE_ISUPPORTS2(nsNativeComponentLoader,
89	nsIComponentLoader,
90	nsINativeComponentLoader)
91
92	NS_IMETHODIMP
93	nsNativeComponentLoader::GetFactory(const nsIID & aCID,
94	const char *aLocation,
95	const char *aType,
96	nsIFactory **_retval)
97	{
98	nsresult rv;
99
100	if (!_retval)
101	return NS_ERROR_NULL_POINTER;
102
103	/* use a hashtable of WeakRefs to store the factory object? */
104
105	/* Should this all live in xcDll? */
106	nsDll *dll;
107	rv = CreateDll(nsnull, aLocation, &dll);
108	if (NS_FAILED(rv))
109	return rv;
110
111	if (!dll)
112	return NS_ERROR_OUT_OF_MEMORY;
113
114	if (!dll->IsLoaded()) {
115	#ifdef PR_LOGGING
116	nsXPIDLCString displayPath;
117	dll->GetDisplayPath(displayPath);
118
119	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
120	("nsNativeComponentLoader: loading \"%s\"",
121	displayPath.get()));
122	#endif
123	if (!dll->Load()) {
124
125	PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
126	("nsNativeComponentLoader: load FAILED"));
127
128	char errorMsg[1024] = "<unknown; can't get error from NSPR>";
129
130	if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
131	PR_GetErrorText(errorMsg);
132
133	DumpLoadError(dll, "GetFactory", errorMsg);
134
135	return NS_ERROR_FAILURE;
136	}
137	}
138
139	/* Get service manager for factory */
140	nsCOMPtr<nsIServiceManager> serviceMgr;
141	rv = NS_GetServiceManager(getter_AddRefs(serviceMgr));
142	if (NS_FAILED(rv))
143	return rv; // XXX translate error code?
144
145	rv = GetFactoryFromModule(dll, aCID, _retval);
146
147	PR_LOG(nsComponentManagerLog, NS_SUCCEEDED(rv) ? PR_LOG_DEBUG : PR_LOG_ERROR,
148	("nsNativeComponentLoader: Factory creation %s for %s",
149	(NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"),
150	aLocation));
151
152	// If the dll failed to get us a factory. But the dll registered that
153	// it would be able to create a factory for this CID. mmh!
154	// We cannot just delete the dll as the dll could be hosting
155	// other CID for which factory creation can pass.
156	// We will just let it be. The effect will be next time we try
157	// creating the object, we will query the dll again. Since the
158	// dll is loaded, this aint a big hit. So for optimized builds
159	// this is ok to limp along.
160	NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Factory creation failed");
161
162	return rv;
163	}
164
165	NS_IMETHODIMP
166	nsNativeComponentLoader::Init(nsIComponentManager aCompMgr, nsISupports aReg)
167	{
168	mCompMgr = aCompMgr;
169	if (!mCompMgr)
170	return NS_ERROR_INVALID_ARG;
171
172	return NS_OK;
173	}
174
175	NS_IMETHODIMP
176	nsNativeComponentLoader::AutoRegisterComponents(PRInt32 aWhen,
177	nsIFile *aDirectory)
178	{
179	#ifdef DEBUG
180	/* do we _really_ want to print this every time? */
181	fprintf(stderr, "nsNativeComponentLoader: autoregistering begins.\n");
182	#endif
183
184	nsresult rv = RegisterComponentsInDir(aWhen, aDirectory);
185
186	#ifdef DEBUG
187	fprintf(stderr, "nsNativeComponentLoader: autoregistering %s\n",
188	NS_FAILED(rv) ? "FAILED" : "succeeded");
189	#endif
190
191	return rv;
192	}
193
194	nsresult
195	nsNativeComponentLoader::RegisterComponentsInDir(PRInt32 when,
196	nsIFile *dir)
197	{
198	nsresult rv = NS_ERROR_FAILURE;
199	PRBool isDir = PR_FALSE;
200
201	#if 0
202	// Going to many of these checks is a performance hit on the mac.
203	// Since these routines are called relatively infrequently and
204	// we will fail anyway down the line if a directory aint there,
205	// we are commenting this check out.
206
207	// Make sure we are dealing with a directory
208	rv = dir->IsDirectory(&isDir);
209	if (NS_FAILED(rv)) return rv;
210
211	if (!isDir)
212	return NS_ERROR_INVALID_ARG;
213	#endif /* 0 */
214
215	// Create a directory iterator
216	nsCOMPtr<nsISimpleEnumerator> dirIterator;
217	rv = dir->GetDirectoryEntries(getter_AddRefs(dirIterator));
218
219	if (NS_FAILED(rv)) return rv;
220
221	// whip through the directory to register every file
222	nsCOMPtr<nsIFile> dirEntry;
223	PRBool more = PR_FALSE;
224
225	rv = dirIterator->HasMoreElements(&more);
226	if (NS_FAILED(rv)) return rv;
227	while (more == PR_TRUE)
228	{
229	rv = dirIterator->GetNext((nsISupports**)getter_AddRefs(dirEntry));
230	if (NS_SUCCEEDED(rv))
231	{
232	rv = dirEntry->IsDirectory(&isDir);
233	if (NS_SUCCEEDED(rv))
234	{
235	if (isDir == PR_TRUE)
236	{
237	// This is a directory. Grovel for components into the directory.
238	#ifdef RT_OS_DARWIN // But not if it's a debug bundle.
239	nsCAutoString leafName;
240	rv = dirEntry->GetNativeLeafName(leafName);
241	if ( NS_FAILED(rv)
242	\|\| leafName.Length() < sizeof(".dSYM")
243	\|\| PL_strcasecmp(leafName.get() + (leafName.Length() - sizeof(".dSYM") + 1), ".dSYM"))
244	#endif
245	rv = RegisterComponentsInDir(when, dirEntry);
246	}
247	else
248	{
249	PRBool registered;
250	// This is a file. Try to register it.
251	rv = AutoRegisterComponent(when, dirEntry, &registered);
252	}
253	}
254	}
255	rv = dirIterator->HasMoreElements(&more);
256	if (NS_FAILED(rv)) return rv;
257	}
258
259	return rv;
260	}
261
262	static nsresult PR_CALLBACK
263	nsFreeLibrary(nsDll dll, nsIServiceManager serviceMgr, PRInt32 when)
264	{
265	nsresult rv = NS_ERROR_FAILURE;
266
267	if (!dll \|\| dll->IsLoaded() == PR_FALSE)
268	{
269	return NS_ERROR_INVALID_ARG;
270	}
271
272	// Get if the dll was marked for unload in an earlier round
273	PRBool dllMarkedForUnload = dll->IsMarkedForUnload();
274
275	// Reset dll marking for unload just in case we return with
276	// an error.
277	dll->MarkForUnload(PR_FALSE);
278
279	PRBool canUnload = PR_FALSE;
280
281	// Get the module object
282	nsCOMPtr<nsIModule> mobj;
283	/* XXXshaver cheat and use the global component manager */
284	rv = dll->GetModule(NS_STATIC_CAST(nsIComponentManager*, nsComponentManagerImpl::gComponentManager),
285	getter_AddRefs(mobj));
286	if (NS_SUCCEEDED(rv))
287	{
288	rv = mobj->CanUnload(nsComponentManagerImpl::gComponentManager, &canUnload);
289	}
290
291	mobj = nsnull; // Release our reference to the module object
292	// When shutting down, whether we can unload the dll or not,
293	// we will shutdown the dll to release any memory it has got
294	if (when == nsIComponentManagerObsolete::NS_Shutdown)
295	{
296	dll->Shutdown();
297	}
298
299	// Check error status on CanUnload() call
300	if (NS_FAILED(rv))
301	{
302	#ifdef PR_LOGGING
303	nsXPIDLCString displayPath;
304	dll->GetDisplayPath(displayPath);
305
306	PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
307	("nsNativeComponentLoader: nsIModule::CanUnload() returned error for %s.",
308	displayPath.get()));
309	#endif
310	return rv;
311	}
312
313	if (canUnload)
314	{
315	if (dllMarkedForUnload)
316	{
317	#ifdef PR_LOGGING
318	nsXPIDLCString displayPath;
319	dll->GetDisplayPath(displayPath);
320
321	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
322	("nsNativeComponentLoader: + Unloading \"%s\".", displayPath.get()));
323	#endif
324
325	#ifdef DEBUG_dougt
326	// XXX dlls aren't counting their outstanding instances correctly
327	// XXX hence, dont unload until this gets enforced.
328	rv = dll->Unload();
329	#endif /* 0 */
330	}
331	else
332	{
333	#ifdef PR_LOGGING
334	nsXPIDLCString displayPath;
335	dll->GetDisplayPath(displayPath);
336
337	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
338	("nsNativeComponentLoader: Ready for unload \"%s\".", displayPath.get()));
339	#endif
340	}
341	}
342	else
343	{
344	#ifdef PR_LOGGING
345	nsXPIDLCString displayPath;
346	dll->GetDisplayPath(displayPath);
347
348	PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
349	("nsNativeComponentLoader: NOT ready for unload %s", displayPath.get()));
350	#endif
351	rv = NS_ERROR_FAILURE;
352	}
353	return rv;
354	}
355
356	struct freeLibrariesClosure
357	{
358	nsIServiceManager *serviceMgr;
359	PRInt32 when;
360	};
361
362	static PRBool PR_CALLBACK
363	nsFreeLibraryEnum(nsHashKey aKey, void aData, void* closure)
364	{
365	nsDll dll = (nsDll ) aData;
366	struct freeLibrariesClosure callData = (struct freeLibrariesClosure ) closure;
367	nsFreeLibrary(dll,
368	(callData ? callData->serviceMgr : NULL),
369	(callData ? callData->when : nsIComponentManagerObsolete::NS_Timer));
370	return PR_TRUE;
371	}
372
373	/*
374	* SelfRegisterDll
375	*
376	* Given a dll abstraction, this will load, selfregister the dll and
377	* unload the dll.
378	*
379	*/
380	nsresult
381	nsNativeComponentLoader::SelfRegisterDll(nsDll *dll,
382	const char *registryLocation,
383	PRBool deferred)
384	{
385	// Precondition: dll is not loaded already, unless we're deferred
386	PR_ASSERT(deferred \|\| dll->IsLoaded() == PR_FALSE);
387
388	nsresult res;
389	nsCOMPtr<nsIServiceManager> serviceMgr;
390	res = NS_GetServiceManager(getter_AddRefs(serviceMgr));
391	if (NS_FAILED(res)) return res;
392
393	if (dll->Load() == PR_FALSE)
394	{
395	// Cannot load. Probably not a dll.
396	char errorMsg[1024] = "Cannot get error from nspr. Not enough memory.";
397	if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
398	PR_GetErrorText(errorMsg);
399
400	DumpLoadError(dll, "SelfRegisterDll", errorMsg);
401
402	return NS_ERROR_FAILURE;
403	}
404
405	#ifdef PR_LOGGING
406	nsXPIDLCString displayPath;
407	dll->GetDisplayPath(displayPath);
408
409	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
410	("nsNativeComponentLoader: Loaded \"%s\".", displayPath.get()));
411	#endif
412
413	// Tell the module to self register
414	nsCOMPtr<nsIFile> fs;
415	nsCOMPtr<nsIModule> mobj;
416	res = dll->GetModule(mCompMgr, getter_AddRefs(mobj));
417	if (NS_SUCCEEDED(res))
418	{
419	/*************************************************************
420	* WARNING: Why are use introducing 'res2' here and then *
421	* later assigning it to 'res' rather than just using 'res'? *
422	* This is because this code turns up a code-generation bug *
423	* in VC6 on NT. Assigning to 'res' on the next line causes *
424	* the value of 'dll' to get nulled out! The two seem to be *
425	* getting aliased together during compilation. *
426	*************************************************************/
427	nsresult res2 = dll->GetDllSpec(getter_AddRefs(fs)); // don't change 'res2' -- see warning, above
428	if (NS_SUCCEEDED(res2)) {
429	// in the case of re-registering a component, we want to remove
430	// any optional data that this file may have had.
431	AddDependentLibrary(fs, nsnull);
432
433	res = mobj->RegisterSelf(mCompMgr, fs, registryLocation,
434	nativeComponentType);
435	}
436	else
437	{
438	res = res2; // don't take this out -- see warning, above
439
440	#ifdef PR_LOGGING
441	nsXPIDLCString displayPath;
442	dll->GetDisplayPath(displayPath);
443	PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
444	("nsNativeComponentLoader: dll->GetDllSpec() on %s FAILED.",
445	displayPath.get()));
446	#endif
447	}
448	mobj = NULL; // Force a release of the Module object before unload()
449	}
450
451	// Update the timestamp and size of the dll in registry
452	// Don't enter deferred modules in the registry, because it might only be
453	// able to register on some later autoreg, after another component has been
454	// installed.
455	if (res != NS_ERROR_FACTORY_REGISTER_AGAIN) {
456	PRInt64 modTime;
457	if (!fs)
458	return res;
459
460	fs->GetLastModifiedTime(&modTime);
461	nsCOMPtr<nsIComponentLoaderManager> manager = do_QueryInterface(mCompMgr);
462	if (!manager)
463	return NS_ERROR_FAILURE;
464
465	nsCOMPtr<nsIFile> fs;
466	res = dll->GetDllSpec(getter_AddRefs(fs));
467	if (NS_FAILED(res)) return res;
468
469	manager->SaveFileInfo(fs, registryLocation, modTime);
470	}
471
472	return res;
473	}
474
475	//
476	// MOZ_DEMANGLE_SYMBOLS is only a linux + MOZ_DEBUG thing.
477	//
478
479	#if defined(MOZ_DEMANGLE_SYMBOLS)
480	#include "nsTraceRefcntImpl.h" // for nsTraceRefcntImpl::DemangleSymbol()
481	#endif
482
483	nsresult
484	nsNativeComponentLoader::DumpLoadError(nsDll *dll,
485	const char *aCallerName,
486	const char *aNsprErrorMsg)
487	{
488	PR_ASSERT(aCallerName != NULL);
489
490	if (nsnull == dll \|\| nsnull == aNsprErrorMsg)
491	return NS_OK;
492
493	nsCAutoString errorMsg(aNsprErrorMsg);
494
495	#if defined(MOZ_DEMANGLE_SYMBOLS)
496	// Demangle undefined symbols
497	nsCAutoString undefinedMagicString("undefined symbol:");
498
499	PRInt32 offset = errorMsg.Find(undefinedMagicString, PR_TRUE);
500
501	if (offset != kNotFound)
502	{
503	nsCAutoString symbol(errorMsg);
504	nsCAutoString demangledSymbol;
505
506	symbol.Cut(0,offset);
507
508	symbol.Cut(0,undefinedMagicString.Length());
509
510	symbol.StripWhitespace();
511
512	char demangled[4096] = "\0";
513
514	nsTraceRefcntImpl::DemangleSymbol(symbol.get(),demangled,sizeof(demangled));
515
516	if (demangled && *demangled != '\0')
517	demangledSymbol = demangled;
518
519	if (!demangledSymbol.IsEmpty())
520	{
521	nsCAutoString tmp(errorMsg);
522
523
524	tmp.Cut(offset + undefinedMagicString.Length(),
525	tmp.Length() - offset - undefinedMagicString.Length());
526
527	tmp += " \n";
528
529	tmp += demangledSymbol;
530
531	errorMsg = tmp;
532	}
533	}
534	#endif // MOZ_DEMANGLE_SYMBOLS
535	nsXPIDLCString displayPath;
536	dll->GetDisplayPath(displayPath);
537
538	#ifdef DEBUG
539	fprintf(stderr,
540	"nsNativeComponentLoader: %s(%s) Load FAILED with error: %s\n",
541	aCallerName,
542	displayPath.get(),
543	errorMsg.get());
544	#endif
545
546	// Do NSPR log
547	#ifdef PR_LOGGING
548	PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
549	("nsNativeComponentLoader: %s(%s) Load FAILED with error: %s",
550	aCallerName,
551	displayPath.get(),
552	errorMsg.get()));
553	#endif
554	return NS_OK;
555	}
556
557	nsresult
558	nsNativeComponentLoader::SelfUnregisterDll(nsDll *dll)
559	{
560	nsresult res;
561	nsCOMPtr<nsIServiceManager> serviceMgr;
562	res = NS_GetServiceManager(getter_AddRefs(serviceMgr));
563	if (NS_FAILED(res)) return res;
564
565	if (dll->Load() == PR_FALSE)
566	{
567	// Cannot load. Probably not a dll.
568	return(NS_ERROR_FAILURE);
569	}
570
571	// Tell the module to self register
572	nsCOMPtr<nsIModule> mobj;
573	res = dll->GetModule(mCompMgr, getter_AddRefs(mobj));
574	if (NS_SUCCEEDED(res))
575	{
576	#ifdef PR_LOGGING
577	nsXPIDLCString displayPath;
578	dll->GetDisplayPath(displayPath);
579
580	PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
581	("nsNativeComponentLoader: %s using nsIModule to unregister self.", displayPath.get()));
582	#endif
583	nsCOMPtr<nsIFile> fs;
584	res = dll->GetDllSpec(getter_AddRefs(fs));
585	if (NS_FAILED(res)) return res;
586	// Get registry location for spec
587	nsXPIDLCString registryName;
588
589	// what I want to do here is QI for a Component Registration Manager. Since this
590	// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
591	nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &res);
592	if (obsoleteManager)
593	res = obsoleteManager->RegistryLocationForSpec(fs, getter_Copies(registryName));
594
595	if (NS_FAILED(res)) return res;
596	mobj->UnregisterSelf(mCompMgr, fs, registryName);
597	}
598	return res;
599	}
600
601	nsresult
602	nsNativeComponentLoader::AutoUnregisterComponent(PRInt32 when,
603	nsIFile *component,
604	PRBool *unregistered)
605	{
606
607	nsresult rv = NS_ERROR_FAILURE;
608
609	*unregistered = PR_FALSE;
610
611	nsXPIDLCString persistentDescriptor;
612	// what I want to do here is QI for a Component Registration Manager. Since this
613	// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
614	nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &rv);
615	if (obsoleteManager)
616	rv = obsoleteManager->RegistryLocationForSpec(component,
617	getter_Copies(persistentDescriptor));
618	if (NS_FAILED(rv)) return rv;
619
620	// Notify observers, if any, of autoregistration work
621	nsCOMPtr<nsIObserverService> observerService =
622	do_GetService("@mozilla.org/observer-service;1", &rv);
623	if (NS_SUCCEEDED(rv))
624	{
625	nsCOMPtr<nsIServiceManager> mgr;
626	rv = NS_GetServiceManager(getter_AddRefs(mgr));
627	if (NS_SUCCEEDED(rv))
628	{
629	(void) observerService->NotifyObservers(mgr,
630	NS_XPCOM_AUTOREGISTRATION_OBSERVER_ID,
631	NS_LITERAL_STRING("Unregistering native component").get());
632	}
633	}
634
635	nsDll *dll = NULL;
636	rv = CreateDll(component, persistentDescriptor, &dll);
637	if (NS_FAILED(rv) \|\| dll == NULL) return rv;
638
639	rv = SelfUnregisterDll(dll);
640
641	#ifdef PR_LOGGING
642	nsXPIDLCString displayPath;
643	dll->GetDisplayPath(displayPath);
644
645	PR_LOG(nsComponentManagerLog, NS_SUCCEEDED(rv) ? PR_LOG_DEBUG : PR_LOG_ERROR,
646	("nsNativeComponentLoader: AutoUnregistration for %s %s.",
647	(NS_FAILED(rv) ? "FAILED" : "succeeded"), displayPath.get()));
648	#endif
649
650	if (NS_FAILED(rv))
651	return rv;
652
653	// Remove any autoreg info about this dll
654	nsCStringKey key(persistentDescriptor);
655	mDllStore.RemoveAndDelete(&key);
656
657	nsCOMPtr<nsIComponentLoaderManager> manager = do_QueryInterface(mCompMgr);
658	NS_ASSERTION(manager, "Something is terribly wrong");
659
660	manager->RemoveFileInfo(component, nsnull);
661
662	*unregistered = PR_TRUE;
663	return rv;
664	}
665
666	nsresult
667	nsNativeComponentLoader::AutoRegisterComponent(PRInt32 when,
668	nsIFile *component,
669	PRBool *registered)
670	{
671	nsresult rv;
672	if (!registered)
673	return NS_ERROR_NULL_POINTER;
674
675	*registered = PR_FALSE;
676
677	#ifndef VBOX
678	/* this should be a pref or registry entry, or something */
679	static const char *ValidDllExtensions[] = {
680	".dll", /* Windows */
681	".so", /* Unix */
682	".shlb", /* Mac ? */
683	".dso", /* Unix ? */
684	".dylib", /* Unix: Mach */
685	".so.1.0", /* Unix: BSD */
686	".sl", /* Unix: HP-UX */
687	#if defined(VMS)
688	".exe", /* Open VMS */
689	#endif
690	".dlm", /* new for all platforms */
691	NULL
692	};
693
694	*registered = PR_FALSE;
695
696	#if 0
697	// This is a performance hit on mac. Since we have already checked
698	// this; plus is we dont, load will fail anyway later on, this
699	// is being commented out.
700
701	// Ensure we are dealing with a file as opposed to a dir
702	PRBool b = PR_FALSE;
703
704	rv = component->IsFile(&b);
705	if (NS_FAILED(rv) \|\| !b)
706	return rv;
707	#endif /* 0 */
708
709	// deal only with files that have a valid extension
710	PRBool validExtension = PR_FALSE;
711
712	#if defined(XP_MAC) // sdagley dougt fix
713	// rjc - on Mac, check the file's type code (skip checking the creator code)
714
715	nsCOMPtr<nsILocalFileMac> localFileMac = do_QueryInterface(component);
716	if (localFileMac)
717	{
718	OSType type;
719	rv = localFileMac->GetFileType(&type);
720	if (NS_SUCCEEDED(rv))
721	{
722	// on Mac, Mozilla shared libraries are of type 'shlb'
723	// Note: we don't check the creator (which for Mozilla is 'MOZZ')
724	// so that 3rd party shared libraries will be noticed!
725	validExtension = ((type == 'shlb') \|\| (type == 'NSPL'));
726	}
727	}
728
729	#else
730	nsCAutoString leafName;
731	rv = component->GetNativeLeafName(leafName);
732	if (NS_FAILED(rv)) return rv;
733	int flen = leafName.Length();
734	for (int i=0; ValidDllExtensions[i] != NULL; i++)
735	{
736	int extlen = PL_strlen(ValidDllExtensions[i]);
737
738	// Does fullname end with this extension
739	if (flen >= extlen &&
740	!PL_strcasecmp(leafName.get() + (flen - extlen), ValidDllExtensions[i])
741	)
742	{
743	validExtension = PR_TRUE;
744	break;
745	}
746	}
747	#endif
748
749	if (validExtension == PR_FALSE)
750	// Skip invalid extensions
751	return NS_OK;
752
753	#else /* VBOX */
754	/* VBox: Only one valid suffix exist, so dispense with the the list. */
755	# ifdef RT_OS_DARWIN
756	# ifdef VBOX_IN_32_ON_64_MAIN_API
757	static const char s_szSuff[] = "-x86.dylib";
758	# else
759	static const char s_szSuff[] = ".dylib";
760	static const char s_szSuffInvalid[] = "-x86.dylib";
761	# endif
762	# elif defined(RT_OS_OS2) \|\| defined(RT_OS_WINDOWS)
763	# ifdef VBOX_IN_32_ON_64_MAIN_API
764	static const char s_szSuff[] = "-x86.dll";
765	#else
766	static const char s_szSuff[] = ".dll";
767	static const char s_szSuffInvalid[] = "-x86.dll";
768	# endif
769	# else
770	# ifdef VBOX_IN_32_ON_64_MAIN_API
771	static const char s_szSuff[] = "-x86.so";
772	#else
773	static const char s_szSuff[] = ".so";
774	static const char s_szSuffInvalid[] = "-x86.so";
775	# endif
776	# endif
777
778	nsCAutoString strLeafName;
779	rv = component->GetNativeLeafName(strLeafName);
780	if (NS_FAILED(rv))
781	return rv;
782	size_t cchLeafName = strLeafName.Length();
783	if ( cchLeafName <= sizeof(s_szSuff)
784	\|\| PL_strcasecmp(strLeafName.get() + cchLeafName - sizeof(s_szSuff) + 1, s_szSuff))
785	{
786	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("Skipping '%s'...", strLeafName.get()));
787	return NS_OK; /* skip */
788	}
789	# ifndef VBOX_IN_32_ON_64_MAIN_API
790	if ( cchLeafName >= sizeof(s_szSuffInvalid)
791	&& !PL_strcasecmp(strLeafName.get() + cchLeafName - sizeof(s_szSuffInvalid) + 1, s_szSuffInvalid))
792	{
793	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("Skipping '%s' (#2)...", strLeafName.get()));
794	return NS_OK; /* skip */
795	}
796	# endif
797	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("... '%s'", strLeafName.get()));
798	#endif /* VBOX */
799
800	nsXPIDLCString persistentDescriptor;
801	// what I want to do here is QI for a Component Registration Manager. Since this
802	// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
803	nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &rv);
804	if (obsoleteManager)
805	rv = obsoleteManager->RegistryLocationForSpec(component,
806	getter_Copies(persistentDescriptor));
807	if (NS_FAILED(rv))
808	return rv;
809
810	nsCStringKey key(persistentDescriptor);
811
812	// Get the registry representation of the dll, if any
813	nsDll *dll;
814	rv = CreateDll(component, persistentDescriptor, &dll);
815	if (NS_FAILED(rv))
816	return rv;
817
818	if (dll != NULL)
819	{
820	// We already have seen this dll. Check if this dll changed
821	if (!dll->HasChanged())
822	{
823	#ifdef PR_LOGGING
824	nsXPIDLCString displayPath;
825	dll->GetDisplayPath(displayPath);
826
827	// Dll hasn't changed. Skip.
828	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
829	("nsNativeComponentLoader: + nsDll not changed \"%s\". Skipping...",
830	displayPath.get()));
831	#endif
832	*registered = PR_TRUE;
833	return NS_OK;
834	}
835
836	// Aagh! the dll has changed since the last time we saw it.
837	// re-register dll
838
839
840	// Notify observers, if any, of autoregistration work
841	nsCOMPtr<nsIObserverService> observerService =
842	do_GetService("@mozilla.org/observer-service;1", &rv);
843	if (NS_SUCCEEDED(rv))
844	{
845	nsCOMPtr<nsIServiceManager> mgr;
846	rv = NS_GetServiceManager(getter_AddRefs(mgr));
847	if (NS_SUCCEEDED(rv))
848	{
849	// this string can't come from a string bundle, because we
850	// don't have string bundles yet.
851	NS_ConvertASCIItoUCS2 fileName("(no name)");
852
853	// get the file name
854	nsCOMPtr<nsIFile> dllSpec;
855	if (NS_SUCCEEDED(dll->GetDllSpec(getter_AddRefs(dllSpec))) && dllSpec)
856	{
857	dllSpec->GetLeafName(fileName);
858	}
859
860	// this string can't come from a string bundle, because we
861	// don't have string bundles yet.
862	(void) observerService->
863	NotifyObservers(mgr,
864	NS_XPCOM_AUTOREGISTRATION_OBSERVER_ID,
865	PromiseFlatString(NS_LITERAL_STRING("Registering native component ") +
866	fileName).get());
867	}
868	}
869
870	if (dll->IsLoaded())
871	{
872	// We loaded the old version of the dll and now we find that the
873	// on-disk copy if newer. Try to unload the dll.
874	nsCOMPtr<nsIServiceManager> serviceMgr;
875	rv = NS_GetServiceManager(getter_AddRefs(serviceMgr));
876
877	rv = nsFreeLibrary(dll, serviceMgr, when);
878	if (NS_FAILED(rv))
879	{
880	// THIS IS THE WORST SITUATION TO BE IN.
881	// Dll doesn't want to be unloaded. Cannot re-register
882	// this dll.
883	#ifdef PR_LOGGING
884	nsXPIDLCString displayPath;
885	dll->GetDisplayPath(displayPath);
886
887	PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
888	("nsNativeComponentLoader: *** Dll already loaded. "
889	"Cannot unload either. Hence cannot re-register "
890	"\"%s\". Skipping...", displayPath.get()));
891	#endif
892	return rv;
893	}
894	else {
895	// dll doesn't have a CanUnload proc. Guess it is
896	// ok to unload it.
897	dll->Unload();
898	#ifdef PR_LOGGING
899	nsXPIDLCString displayPath;
900	dll->GetDisplayPath(displayPath);
901	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
902	("nsNativeComponentLoader: + Unloading \"%s\". (no CanUnloadProc).",
903	displayPath.get()));
904	#endif
905	}
906
907	} // dll isloaded
908
909	// Sanity.
910	if (dll->IsLoaded())
911	{
912	// We went through all the above to make sure the dll
913	// is unloaded. And here we are with the dll still
914	// loaded. Whoever taught dp programming...
915	#ifdef PR_LOGGING
916	nsXPIDLCString displayPath;
917	dll->GetDisplayPath(displayPath);
918	PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
919	("nsNativeComponentLoader: Dll still loaded. Cannot re-register "
920	"\"%s\". Skipping...", displayPath.get()));
921	#endif
922	return NS_ERROR_FAILURE;
923	}
924	} // dll != NULL
925	else
926	{
927	// Create and add the dll to the mDllStore
928	// It is ok to do this even if the creation of nsDll
929	// didnt succeed. That way we wont do this again
930	// when we encounter the same dll.
931	dll = new nsDll(component, this);
932	if (dll == NULL)
933	return NS_ERROR_OUT_OF_MEMORY;
934	mDllStore.Put(&key, (void *) dll);
935	} // dll == NULL
936
937	// Either we are seeing the dll for the first time or the dll has
938	// changed since we last saw it and it is unloaded successfully.
939	//
940	// Now we can try register the dll for sure.
941	nsresult res = SelfRegisterDll(dll, persistentDescriptor, PR_FALSE);
942	if (NS_FAILED(res))
943	{
944	if (res == NS_ERROR_FACTORY_REGISTER_AGAIN) {
945	/* defer for later loading */
946	mDeferredComponents.AppendElement(dll);
947	*registered = PR_TRUE;
948	return NS_OK;
949	} else {
950	#ifdef PR_LOGGING
951	nsXPIDLCString displayPath;
952	dll->GetDisplayPath(displayPath);
953
954	PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
955	("nsNativeComponentLoader: Autoregistration FAILED for "
956	"\"%s\". Skipping...", displayPath.get()));
957	#endif
958	return NS_ERROR_FACTORY_NOT_REGISTERED;
959	}
960	}
961	else
962	{
963	#ifdef PR_LOGGING
964	nsXPIDLCString displayPath;
965	dll->GetDisplayPath(displayPath);
966
967	PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
968	("nsNativeComponentLoader: Autoregistration Passed for "
969	"\"%s\".", displayPath.get()));
970	#endif
971	// Marking dll along with modified time and size in the
972	// registry happens at PlatformRegister(). No need to do it
973	// here again.
974	*registered = PR_TRUE;
975	}
976	return NS_OK;
977	}
978
979	nsresult
980	nsNativeComponentLoader::RegisterDeferredComponents(PRInt32 aWhen,
981	PRBool *aRegistered)
982	{
983	#ifdef DEBUG
984	fprintf(stderr, "nNCL: registering deferred (%d)\n",
985	mDeferredComponents.Count());
986	#endif
987	*aRegistered = PR_FALSE;
988	if (!mDeferredComponents.Count())
989	return NS_OK;
990
991	for (int i = mDeferredComponents.Count() - 1; i >= 0; i--) {
992	nsDll dll = NS_STATIC_CAST(nsDll , mDeferredComponents[i]);
993	nsresult rv = SelfRegisterDll(dll,
994	nsnull,
995	PR_TRUE);
996	if (rv != NS_ERROR_FACTORY_REGISTER_AGAIN) {
997	if (NS_SUCCEEDED(rv))
998	*aRegistered = PR_TRUE;
999	mDeferredComponents.RemoveElementAt(i);
1000	}
1001	}
1002	#ifdef DEBUG
1003	if (*aRegistered)
1004	fprintf(stderr, "nNCL: registered deferred, %d left\n",
1005	mDeferredComponents.Count());
1006	else
1007	fprintf(stderr, "nNCL: didn't register any components, %d left\n",
1008	mDeferredComponents.Count());
1009	#endif
1010	/* are there any fatal errors? */
1011	return NS_OK;
1012	}
1013
1014	nsresult
1015	nsNativeComponentLoader::OnRegister(const nsIID &aCID, const char *aType,
1016	const char *aClassName,
1017	const char *aContractID,
1018	const char *aLocation,
1019	PRBool aReplace,
1020	PRBool aPersist)
1021	{
1022	return NS_OK;
1023	}
1024
1025	nsresult
1026	nsNativeComponentLoader::UnloadAll(PRInt32 aWhen)
1027	{
1028	PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsNativeComponentLoader: Unloading...."));
1029
1030	struct freeLibrariesClosure callData;
1031	callData.serviceMgr = NULL; // XXX need to get this as a parameter
1032	callData.when = aWhen;
1033
1034	// Cycle through the dlls checking to see if they want to be unloaded
1035	mDllStore.Enumerate(nsFreeLibraryEnum, &callData);
1036	return NS_OK;
1037	}
1038
1039	//
1040	// CreateDll
1041	// The only way to create a dll or get it from the dll cache. This will
1042	// be called in multiple situations:
1043	//
1044	// 1. Autoregister will create one for each dll it is trying to register. This
1045	// call will be passing a spec in.
1046	// {spec, NULL, 0, 0}
1047	//
1048	// 2. GetFactory() This will call CreateDll() with a null spec but will give
1049	// the registry represented name of the dll. If modtime and size are zero,
1050	// we will go the registry to find the right modtime and size.
1051	// {NULL, rel:libpref.so, 0, 0}
1052	//
1053	// 3. Prepopulation of dllCache A dll object created off a registry entry.
1054	// Specifically dll name is stored in rel: or abs: or lib: formats in the
1055	// registry along with its lastModTime and fileSize.
1056	// {NULL, rel:libpref.so, 8985659, 20987}
1057	nsresult
1058	nsNativeComponentLoader::CreateDll(nsIFile *aSpec,
1059	const char *aLocation,
1060	nsDll **aDll)
1061	{
1062	nsDll *dll;
1063	nsCOMPtr<nsIFile> dllSpec;
1064	nsCOMPtr<nsIFile> spec;
1065	nsresult rv;
1066
1067	nsCStringKey key(aLocation);
1068	dll = (nsDll *)mDllStore.Get(&key);
1069	if (dll)
1070	{
1071	*aDll = dll;
1072	return NS_OK;
1073	}
1074
1075	if (!aSpec)
1076	{
1077	// what I want to do here is QI for a Component Registration Manager. Since this
1078	// has not been invented yet, QI to the obsolete manager. Kids, don't do this at home.
1079	nsCOMPtr<nsIComponentManagerObsolete> obsoleteManager = do_QueryInterface(mCompMgr, &rv);
1080	if (obsoleteManager)
1081	rv = obsoleteManager->SpecForRegistryLocation(aLocation,
1082	getter_AddRefs(spec));
1083	if (NS_FAILED(rv))
1084	return rv;
1085	}
1086	else
1087	{
1088	spec = aSpec;
1089	}
1090
1091	if (!dll)
1092	{
1093	dll = new nsDll(spec, this);
1094	if (!dll)
1095	return NS_ERROR_OUT_OF_MEMORY;
1096	}
1097
1098	*aDll = dll;
1099	mDllStore.Put(&key, dll);
1100	return NS_OK;
1101	}
1102
1103	nsresult
1104	nsNativeComponentLoader::GetFactoryFromModule(nsDll *aDll, const nsCID &aCID,
1105	nsIFactory **aFactory)
1106	{
1107	nsresult rv;
1108
1109	nsCOMPtr<nsIModule> module;
1110	rv = aDll->GetModule(mCompMgr, getter_AddRefs(module));
1111
1112	if (NS_FAILED(rv))
1113	return rv;
1114
1115	return module->GetClassObject(mCompMgr, aCID, NS_GET_IID(nsIFactory),
1116	(void **)aFactory);
1117	}
1118
1119
1120	NS_IMETHODIMP
1121	nsNativeComponentLoader::AddDependentLibrary(nsIFile* aFile, const char* libName)
1122	{
1123	nsCOMPtr<nsIComponentLoaderManager> manager = do_QueryInterface(mCompMgr);
1124	if (!manager)
1125	{
1126	NS_WARNING("Something is terribly wrong");
1127	return NS_ERROR_FAILURE;
1128	}
1129
1130	// the native component loader uses the optional data
1131	// to store a space delimited list of dependent library
1132	// names
1133
1134	if (!libName)
1135	{
1136	manager->SetOptionalData(aFile, nsnull, nsnull);
1137	return NS_OK;
1138	}
1139
1140	nsXPIDLCString data;
1141	manager->GetOptionalData(aFile, nsnull, getter_Copies(data));
1142
1143	if (!data.IsEmpty())
1144	data.AppendLiteral(" ");
1145
1146	data.Append(nsDependentCString(libName));
1147
1148	manager->SetOptionalData(aFile, nsnull, data);
1149	return NS_OK;
1150	}

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source: vbox/trunk/src/libs/xpcom18a4/xpcom/components/nsNativeComponentLoader.cpp@ 95259

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