RTFTPServer.cpp@ 82841

最後變更在這個檔案從82841是 82841,由 vboxsync 提交於 5 年前
IPRT/FTP: Implemented support for directory traversing. bugref:9646
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Author Date Id Revision`
檔案大小: 18.9 KB

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1	/* $Id: RTFTPServer.cpp 82841 2020-01-23 10:02:26Z vboxsync $ */
2	/** @file
3	* IPRT - Utility for running a (simple) FTP server.
4	*/
5
6	/*
7	* Copyright (C) 2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.alldomusa.eu.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27	/*
28	* Use this setup to best see what's going on:
29	*
30	* VBOX_LOG=rt_ftp=~0
31	* VBOX_LOG_DEST="nofile stderr"
32	* VBOX_LOG_FLAGS="unbuffered enabled thread msprog"
33	*
34	*/
35
36
37	/*********************************************************************************************************************************
38	* Header Files *
39	*********************************************************************************************************************************/
40	#include <signal.h>
41
42	#include <iprt/ftp.h>
43
44	#include <iprt/net.h> /* To make use of IPv4Addr in RTGETOPTUNION. */
45
46	#include <iprt/asm.h>
47	#include <iprt/assert.h>
48	#include <iprt/ctype.h>
49	#include <iprt/err.h>
50	#include <iprt/file.h>
51	#include <iprt/getopt.h>
52	#include <iprt/initterm.h>
53	#include <iprt/mem.h>
54	#include <iprt/message.h>
55	#include <iprt/path.h>
56	#include <iprt/stream.h>
57	#include <iprt/string.h>
58	#include <iprt/thread.h>
59	#include <iprt/vfs.h>
60
61	#ifdef RT_OS_WINDOWS
62	# include <iprt/win/windows.h>
63	#endif
64
65
66	/*********************************************************************************************************************************
67	* Definitations *
68	*********************************************************************************************************************************/
69	typedef struct FTPSERVERDATA
70	{
71	/** The absolute path of the FTP server's root directory. */
72	char szPathRootAbs[RTPATH_MAX];
73	/** The relative current working directory (CWD) to szRootDir. */
74	char szCWD[RTPATH_MAX];
75	RTFILE hFile;
76	} FTPSERVERDATA;
77	typedef FTPSERVERDATA *PFTPSERVERDATA;
78
79	typedef struct FTPDIRHANDLE
80	{
81	/** The VFS (chain) handle to use for this directory. */
82	RTVFSDIR hVfsDir;
83	} FTPDIRHANDLE;
84	typedef FTPDIRHANDLE *PFTPDIRHANDLE;
85
86
87	/*********************************************************************************************************************************
88	* Global Variables *
89	*********************************************************************************************************************************/
90	/** Set by the signal handler when the FTP server shall be terminated. */
91	static volatile bool g_fCanceled = false;
92	static FTPSERVERDATA g_FTPServerData;
93
94
95	#ifdef RT_OS_WINDOWS
96	static BOOL WINAPI signalHandler(DWORD dwCtrlType)
97	{
98	bool fEventHandled = FALSE;
99	switch (dwCtrlType)
100	{
101	/* User pressed CTRL+C or CTRL+BREAK or an external event was sent
102	* via GenerateConsoleCtrlEvent(). */
103	case CTRL_BREAK_EVENT:
104	case CTRL_CLOSE_EVENT:
105	case CTRL_C_EVENT:
106	ASMAtomicWriteBool(&g_fCanceled, true);
107	fEventHandled = TRUE;
108	break;
109	default:
110	break;
111	/** @todo Add other events here. */
112	}
113
114	return fEventHandled;
115	}
116	#else /* !RT_OS_WINDOWS */
117	/**
118	* Signal handler that sets g_fCanceled.
119	*
120	* This can be executed on any thread in the process, on Windows it may even be
121	* a thread dedicated to delivering this signal. Don't do anything
122	* unnecessary here.
123	*/
124	static void signalHandler(int iSignal)
125	{
126	NOREF(iSignal);
127	ASMAtomicWriteBool(&g_fCanceled, true);
128	}
129	#endif
130
131	/**
132	* Installs a custom signal handler to get notified
133	* whenever the user wants to intercept the program.
134	*
135	* @todo Make this handler available for all VBoxManage modules?
136	*/
137	static int signalHandlerInstall(void)
138	{
139	g_fCanceled = false;
140
141	int rc = VINF_SUCCESS;
142	#ifdef RT_OS_WINDOWS
143	if (!SetConsoleCtrlHandler((PHANDLER_ROUTINE)signalHandler, TRUE /* Add handler */))
144	{
145	rc = RTErrConvertFromWin32(GetLastError());
146	RTMsgError("Unable to install console control handler, rc=%Rrc\n", rc);
147	}
148	#else
149	signal(SIGINT, signalHandler);
150	signal(SIGTERM, signalHandler);
151	# ifdef SIGBREAK
152	signal(SIGBREAK, signalHandler);
153	# endif
154	#endif
155	return rc;
156	}
157
158	/**
159	* Uninstalls a previously installed signal handler.
160	*/
161	static int signalHandlerUninstall(void)
162	{
163	int rc = VINF_SUCCESS;
164	#ifdef RT_OS_WINDOWS
165	if (!SetConsoleCtrlHandler((PHANDLER_ROUTINE)NULL, FALSE /* Remove handler */))
166	{
167	rc = RTErrConvertFromWin32(GetLastError());
168	RTMsgError("Unable to uninstall console control handler, rc=%Rrc\n", rc);
169	}
170	#else
171	signal(SIGINT, SIG_DFL);
172	signal(SIGTERM, SIG_DFL);
173	# ifdef SIGBREAK
174	signal(SIGBREAK, SIG_DFL);
175	# endif
176	#endif
177	return rc;
178	}
179
180	static DECLCALLBACK(int) onUserConnect(PRTFTPCALLBACKDATA pData, const char *pcszUser)
181	{
182	RT_NOREF(pData, pcszUser);
183
184	RTPrintf("User '%s' connected\n", pcszUser);
185
186	return VINF_SUCCESS;
187	}
188
189	static DECLCALLBACK(int) onUserAuthenticate(PRTFTPCALLBACKDATA pData, const char pcszUser, const char pcszPassword)
190	{
191	RT_NOREF(pData, pcszUser, pcszPassword);
192
193	RTPrintf("Authenticating user '%s' ...\n", pcszUser);
194
195	return VINF_SUCCESS;
196	}
197
198	static DECLCALLBACK(int) onUserDisonnect(PRTFTPCALLBACKDATA pData, const char *pcszUser)
199	{
200	RT_NOREF(pData);
201
202	RTPrintf("User '%s' disconnected\n", pcszUser);
203
204	return VINF_SUCCESS;
205	}
206
207	static DECLCALLBACK(int) onFileOpen(PRTFTPCALLBACKDATA pData, const char pcszPath, uint32_t fMode, void *ppvHandle)
208	{
209	RT_NOREF(ppvHandle);
210
211	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
212	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
213
214	return RTFileOpen(&pThis->hFile, pcszPath, fMode);
215	}
216
217	static DECLCALLBACK(int) onFileRead(PRTFTPCALLBACKDATA pData, void pvHandle, void pvBuf, size_t cbToRead, size_t *pcbRead)
218	{
219	RT_NOREF(pvHandle);
220
221	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
222	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
223
224	return RTFileRead(pThis->hFile, pvBuf, cbToRead, pcbRead);
225	}
226
227	static DECLCALLBACK(int) onFileClose(PRTFTPCALLBACKDATA pData, void *pvHandle)
228	{
229	RT_NOREF(pvHandle);
230
231	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
232	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
233
234	int rc = RTFileClose(pThis->hFile);
235	if (RT_SUCCESS(rc))
236	{
237	pThis->hFile = NIL_RTFILE;
238	}
239
240	return rc;
241	}
242
243	static DECLCALLBACK(int) onFileGetSize(PRTFTPCALLBACKDATA pData, const char pcszPath, uint64_t puSize)
244	{
245	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
246	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
247
248	char *pszStat = NULL;
249	if (RTStrAPrintf(&pszStat, "%s/%s", pThis->szPathRootAbs, pcszPath) <= 0)
250	return VERR_NO_MEMORY;
251
252	RTPrintf("Retrieving file size for '%s' ...\n", pcszPath);
253
254	RTFILE hFile;
255	int rc = RTFileOpen(&hFile, pcszPath,
256	RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE);
257	if (RT_SUCCESS(rc))
258	{
259	rc = RTFileQuerySize(hFile, puSize);
260	if (RT_SUCCESS(rc))
261	RTPrintf("File size is: %RU64\n", *puSize);
262	RTFileClose(hFile);
263	}
264
265	RTStrFree(pszStat);
266
267	return rc;
268	}
269
270	static DECLCALLBACK(int) onFileStat(PRTFTPCALLBACKDATA pData, const char *pcszPath, PRTFSOBJINFO pFsObjInfo)
271	{
272	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
273	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
274
275	char *pszStat = NULL;
276	if (RTStrAPrintf(&pszStat, "%s/%s", pThis->szPathRootAbs, pcszPath) <= 0)
277	return VERR_NO_MEMORY;
278
279	RTPrintf("Stat for '%s'\n", pszStat);
280
281	RTFILE hFile;
282	int rc = RTFileOpen(&hFile, pszStat,
283	RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE);
284	if (RT_SUCCESS(rc))
285	{
286	RTFSOBJINFO fsObjInfo;
287	rc = RTFileQueryInfo(hFile, &fsObjInfo, RTFSOBJATTRADD_NOTHING);
288	if (RT_SUCCESS(rc))
289	{
290	if (pFsObjInfo)
291	*pFsObjInfo = fsObjInfo;
292	}
293
294	RTFileClose(hFile);
295	}
296
297	RTStrFree(pszStat);
298
299	return rc;
300	}
301
302	static DECLCALLBACK(int) onPathSetCurrent(PRTFTPCALLBACKDATA pData, const char *pcszCWD)
303	{
304	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
305	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
306
307	RTPrintf("Setting current directory to '%s'\n", pcszCWD);
308
309	/** @todo BUGBUG Santiy checks! */
310
311	return RTStrCopy(pThis->szCWD, sizeof(pThis->szCWD), pcszCWD);
312	}
313
314	static DECLCALLBACK(int) onPathGetCurrent(PRTFTPCALLBACKDATA pData, char *pszPWD, size_t cbPWD)
315	{
316	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
317	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
318
319	RTPrintf("Current directory is: '%s'\n", pThis->szCWD);
320
321	return RTStrCopy(pszPWD, cbPWD, pThis->szCWD);
322	}
323
324	static DECLCALLBACK(int) onPathUp(PRTFTPCALLBACKDATA pData)
325	{
326	RT_NOREF(pData);
327
328	return VINF_SUCCESS;
329	}
330
331	static DECLCALLBACK(int) onDirOpen(PRTFTPCALLBACKDATA pData, const char pcszPath, void *ppvHandle)
332	{
333	PFTPSERVERDATA pThis = (PFTPSERVERDATA)pData->pvUser;
334	Assert(pData->cbUser == sizeof(FTPSERVERDATA));
335
336	PFTPDIRHANDLE pHandle = (PFTPDIRHANDLE)RTMemAllocZ(sizeof(FTPDIRHANDLE));
337	if (!pHandle)
338	return VERR_NO_MEMORY;
339
340	/* Construct absolute path. */
341	char *pszPathAbs = NULL;
342	if (RTStrAPrintf(&pszPathAbs, "%s/%s", pThis->szPathRootAbs, pcszPath) <= 0)
343	return VERR_NO_MEMORY;
344
345	RTPrintf("Opening directory '%s'\n", pszPathAbs);
346
347	int rc = RTVfsChainOpenDir(pszPathAbs, 0 /fFlags/, &pHandle->hVfsDir, NULL /* poffError /, NULL / pErrInfo */);
348	if (RT_SUCCESS(rc))
349	{
350	*ppvHandle = pHandle;
351	}
352	else
353	{
354	RTMemFree(pHandle);
355	}
356
357	RTStrFree(pszPathAbs);
358
359	return rc;
360	}
361
362	static DECLCALLBACK(int) onDirClose(PRTFTPCALLBACKDATA pData, void *pvHandle)
363	{
364	RT_NOREF(pData);
365
366	PFTPDIRHANDLE pHandle = (PFTPDIRHANDLE)pvHandle;
367	AssertPtrReturn(pHandle, VERR_INVALID_POINTER);
368
369	RTVfsDirRelease(pHandle->hVfsDir);
370
371	RTMemFree(pHandle);
372	pHandle = NULL;
373
374	return VINF_SUCCESS;
375	}
376
377	static DECLCALLBACK(int) onDirRead(PRTFTPCALLBACKDATA pData, void pvHandle, char *ppszEntry,
378	PRTFSOBJINFO pInfo, char ppszOwner, char ppszGroup, char **ppszTarget)
379	{
380	RT_NOREF(pData);
381	RT_NOREF(ppszTarget); /* No symlinks yet */
382
383	PFTPDIRHANDLE pHandle = (PFTPDIRHANDLE)pvHandle;
384	AssertPtrReturn(pHandle, VERR_INVALID_POINTER);
385
386	size_t cbDirEntryAlloced = sizeof(RTDIRENTRYEX);
387	PRTDIRENTRYEX pDirEntry = (PRTDIRENTRYEX)RTMemTmpAlloc(cbDirEntryAlloced);
388	if (!pDirEntry)
389	return VERR_NO_MEMORY;
390
391	int rc;
392
393	for (;;)
394	{
395	size_t cbDirEntry = cbDirEntryAlloced;
396	rc = RTVfsDirReadEx(pHandle->hVfsDir, pDirEntry, &cbDirEntry, RTFSOBJATTRADD_UNIX);
397	if (RT_FAILURE(rc))
398	{
399	if (rc == VERR_BUFFER_OVERFLOW)
400	{
401	RTMemTmpFree(pDirEntry);
402	cbDirEntryAlloced = RT_ALIGN_Z(RT_MIN(cbDirEntry, cbDirEntryAlloced) + 64, 64);
403	pDirEntry = (PRTDIRENTRYEX)RTMemTmpAlloc(cbDirEntryAlloced);
404	if (pDirEntry)
405	continue;
406	}
407	else if (rc != VERR_NO_MORE_FILES)
408	break;
409	}
410
411	if (RT_SUCCESS(rc))
412	{
413	if (pDirEntry->Info.Attr.u.Unix.uid != NIL_RTUID)
414	{
415	RTFSOBJINFO OwnerInfo;
416	rc = RTVfsDirQueryPathInfo(pHandle->hVfsDir,
417	pDirEntry->szName, &OwnerInfo, RTFSOBJATTRADD_UNIX_OWNER, RTPATH_F_ON_LINK);
418	if ( RT_SUCCESS(rc)
419	&& OwnerInfo.Attr.u.UnixOwner.szName[0])
420	{
421	*ppszOwner = RTStrDup(&OwnerInfo.Attr.u.UnixOwner.szName[0]);
422	if (!*ppszOwner)
423	rc = VERR_NO_MEMORY;
424	}
425	}
426
427	if ( RT_SUCCESS(rc)
428	&& pDirEntry->Info.Attr.u.Unix.gid != NIL_RTGID)
429	{
430	RTFSOBJINFO GroupInfo;
431	rc = RTVfsDirQueryPathInfo(pHandle->hVfsDir,
432	pDirEntry->szName, &GroupInfo, RTFSOBJATTRADD_UNIX_GROUP, RTPATH_F_ON_LINK);
433	if ( RT_SUCCESS(rc)
434	&& GroupInfo.Attr.u.UnixGroup.szName[0])
435	{
436	*ppszGroup = RTStrDup(&GroupInfo.Attr.u.UnixGroup.szName[0]);
437	if (!*ppszGroup)
438	rc = VERR_NO_MEMORY;
439	}
440	}
441	}
442
443	*ppszEntry = RTStrDup(pDirEntry->szName);
444	AssertPtrReturn(*ppszEntry, VERR_NO_MEMORY);
445
446	*pInfo = pDirEntry->Info;
447
448	break;
449
450	} /* for */
451
452	RTMemTmpFree(pDirEntry);
453	pDirEntry = NULL;
454
455	return rc;
456	}
457
458	int main(int argc, char **argv)
459	{
460	int rc = RTR3InitExe(argc, &argv, 0);
461	if (RT_FAILURE(rc))
462	return RTMsgInitFailure(rc);
463
464	/* Use some sane defaults. */
465	char szAddress[64] = "localhost";
466	uint16_t uPort = 2121;
467
468	RT_ZERO(g_FTPServerData);
469
470	/*
471	* Parse arguments.
472	*/
473	static const RTGETOPTDEF s_aOptions[] =
474	{
475	{ "--address", 'a', RTGETOPT_REQ_IPV4ADDR }, /** @todo Use a string for DNS hostnames? */
476	/** @todo Implement IPv6 support? */
477	{ "--port", 'p', RTGETOPT_REQ_UINT16 },
478	{ "--root-dir", 'r', RTGETOPT_REQ_STRING },
479	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING }
480	};
481
482	RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
483	unsigned uVerbosityLevel = 1;
484
485	RTGETOPTUNION ValueUnion;
486	RTGETOPTSTATE GetState;
487	RTGetOptInit(&GetState, argc, argv, s_aOptions, RT_ELEMENTS(s_aOptions), 1, RTGETOPTINIT_FLAGS_OPTS_FIRST);
488	while ((rc = RTGetOpt(&GetState, &ValueUnion)))
489	{
490	switch (rc)
491	{
492	case 'a':
493	RTStrPrintf2(szAddress, sizeof(szAddress), "%RU8.%RU8.%RU8.%RU8", /** @todo Improve this. */
494	ValueUnion.IPv4Addr.au8[0], ValueUnion.IPv4Addr.au8[1], ValueUnion.IPv4Addr.au8[2], ValueUnion.IPv4Addr.au8[3]);
495	break;
496
497	case 'p':
498	uPort = ValueUnion.u16;
499	break;
500
501	case 'r':
502	RTStrCopy(g_FTPServerData.szPathRootAbs, sizeof(g_FTPServerData.szPathRootAbs), ValueUnion.psz);
503	break;
504
505	case 'v':
506	uVerbosityLevel++;
507	break;
508
509	case 'h':
510	RTPrintf("Usage: %s [options]\n"
511	"\n"
512	"Options:\n"
513	" -a, --address (default: localhost)\n"
514	" Specifies the address to use for listening.\n"
515	" -p, --port (default: 2121)\n"
516	" Specifies the port to use for listening.\n"
517	" -r, --root-dir (default: current dir)\n"
518	" Specifies the root directory being served.\n"
519	" -v, --verbose\n"
520	" Controls the verbosity level.\n"
521	" -h, -?, --help\n"
522	" Display this help text and exit successfully.\n"
523	" -V, --version\n"
524	" Display the revision and exit successfully.\n"
525	, RTPathFilename(argv[0]));
526	return RTEXITCODE_SUCCESS;
527
528	case 'V':
529	RTPrintf("$Revision: 82841 $\n");
530	return RTEXITCODE_SUCCESS;
531
532	default:
533	return RTGetOptPrintError(rc, &ValueUnion);
534	}
535	}
536
537	if (!strlen(g_FTPServerData.szPathRootAbs))
538	{
539	/* By default use the current directory as serving root directory. */
540	rc = RTPathGetCurrent(g_FTPServerData.szPathRootAbs, sizeof(g_FTPServerData.szPathRootAbs));
541	if (RT_FAILURE(rc))
542	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Retrieving current directory failed: %Rrc", rc);
543	}
544
545	/* Initialize CWD. */
546	RTStrPrintf2(g_FTPServerData.szCWD, sizeof(g_FTPServerData.szCWD), "/");
547
548	/* Install signal handler. */
549	rc = signalHandlerInstall();
550	if (RT_SUCCESS(rc))
551	{
552	/*
553	* Create the FTP server instance.
554	*/
555	RTFTPSERVERCALLBACKS Callbacks;
556	RT_ZERO(Callbacks);
557
558	Callbacks.pfnOnUserConnect = onUserConnect;
559	Callbacks.pfnOnUserAuthenticate = onUserAuthenticate;
560	Callbacks.pfnOnUserDisconnect = onUserDisonnect;
561	Callbacks.pfnOnFileOpen = onFileOpen;
562	Callbacks.pfnOnFileRead = onFileRead;
563	Callbacks.pfnOnFileClose = onFileClose;
564	Callbacks.pfnOnFileGetSize = onFileGetSize;
565	Callbacks.pfnOnFileStat = onFileStat;
566	Callbacks.pfnOnPathSetCurrent = onPathSetCurrent;
567	Callbacks.pfnOnPathGetCurrent = onPathGetCurrent;
568	Callbacks.pfnOnPathUp = onPathUp;
569	Callbacks.pfnOnDirOpen = onDirOpen;
570	Callbacks.pfnOnDirClose = onDirClose;
571	Callbacks.pfnOnDirRead = onDirRead;
572
573	RTFTPSERVER hFTPServer;
574	rc = RTFtpServerCreate(&hFTPServer, szAddress, uPort, &Callbacks,
575	&g_FTPServerData, sizeof(g_FTPServerData));
576	if (RT_SUCCESS(rc))
577	{
578	RTPrintf("Starting FTP server at %s:%RU16 ...\n", szAddress, uPort);
579	RTPrintf("Root directory is '%s'\n", g_FTPServerData.szPathRootAbs);
580
581	RTPrintf("Running FTP server ...\n");
582
583	for (;;)
584	{
585	RTThreadSleep(200);
586
587	if (g_fCanceled)
588	break;
589	}
590
591	RTPrintf("Stopping FTP server ...\n");
592
593	int rc2 = RTFtpServerDestroy(hFTPServer);
594	if (RT_SUCCESS(rc))
595	rc = rc2;
596
597	RTPrintf("Stopped FTP server\n");
598	}
599	else
600	rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "RTFTPServerCreate failed: %Rrc", rc);
601
602	int rc2 = signalHandlerUninstall();
603	if (RT_SUCCESS(rc))
604	rc = rc2;
605	}
606
607	/* Set rcExit on failure in case we forgot to do so before. */
608	if (RT_FAILURE(rc))
609	rcExit = RTEXITCODE_FAILURE;
610
611	return rcExit;
612	}
613

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source: vbox/trunk/src/VBox/Runtime/tools/RTFTPServer.cpp@ 82841

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