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scmsubversion.cpp

Last change on this file was 99775, checked in by vboxsync, 12 months ago
*: Mark functions as static if not used outside of a given compilation unit. Enables the compiler to optimize inlining, reduces the symbol tables, exposes unused functions and in some rare cases exposes mismtaches between function declarations and definitions, but most importantly reduces the number of parfait reports for the extern-function-no-forward-declaration category. This should not result in any functional changes, bugref:3409
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 58.8 KB

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1	/* $Id: scmsubversion.cpp 99775 2023-05-12 12:21:58Z vboxsync $ */
2	/** @file
3	* IPRT Testcase / Tool - Source Code Massager, Subversion Access.
4	*/
5
6	/*
7	* Copyright (C) 2010-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	#define SCM_WITH_DYNAMIC_LIB_SVN
29
30
31	/*********************************************************************************************************************************
32	* Header Files *
33	*********************************************************************************************************************************/
34	#include <iprt/assert.h>
35	#include <iprt/ctype.h>
36	#include <iprt/dir.h>
37	#include <iprt/env.h>
38	#include <iprt/err.h>
39	#include <iprt/file.h>
40	#include <iprt/getopt.h>
41	#include <iprt/handle.h>
42	#include <iprt/initterm.h>
43	#include <iprt/ldr.h>
44	#include <iprt/mem.h>
45	#include <iprt/message.h>
46	#include <iprt/param.h>
47	#include <iprt/path.h>
48	#include <iprt/pipe.h>
49	#include <iprt/poll.h>
50	#include <iprt/process.h>
51	#include <iprt/stream.h>
52	#include <iprt/string.h>
53
54	#include "scm.h"
55
56	#if defined(SCM_WITH_DYNAMIC_LIB_SVN) && defined(SCM_WITH_SVN_HEADERS)
57	# include <svn_client.h>
58	#endif
59
60
61	/*********************************************************************************************************************************
62	* Defined Constants And Macros *
63	*********************************************************************************************************************************/
64	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
65	# if defined(RT_OS_WINDOWS) && defined(RT_ARCH_X86)
66	# define APR_CALL __stdcall
67	# define SVN_CALL /* __stdcall ?? */
68	# else
69	# define APR_CALL
70	# define SVN_CALL
71	# endif
72	#endif
73	#if defined(SCM_WITH_DYNAMIC_LIB_SVN) && !defined(SCM_WITH_SVN_HEADERS)
74	# define SVN_ERR_MISC_CATEGORY_START 200000
75	# define SVN_ERR_UNVERSIONED_RESOURCE (SVN_ERR_MISC_CATEGORY_START + 5)
76	#endif
77
78
79	/*********************************************************************************************************************************
80	* Structures and Typedefs *
81	*********************************************************************************************************************************/
82	#if defined(SCM_WITH_DYNAMIC_LIB_SVN) && !defined(SCM_WITH_SVN_HEADERS)
83	typedef int apr_status_t;
84	typedef int64_t apr_time_t;
85	typedef struct apr_pool_t apr_pool_t;
86	typedef struct apr_hash_t apr_hash_t;
87	typedef struct apr_hash_index_t apr_hash_index_t;
88	typedef struct apr_array_header_t apr_array_header_t;
89
90
91	typedef struct svn_error_t
92	{
93	apr_status_t apr_err;
94	const char *_dbgr_message;
95	struct svn_error_t *_dbgr_child;
96	apr_pool_t *_dbgr_pool;
97	const char *_dbgr_file;
98	long _dbgr_line;
99	} svn_error_t;
100	typedef int svn_boolean_t;
101	typedef long int svn_revnum_t;
102	typedef struct svn_client_ctx_t svn_client_ctx_t;
103	typedef enum svn_opt_revision_kind
104	{
105	svn_opt_revision_unspecified = 0,
106	svn_opt_revision_number,
107	svn_opt_revision_date,
108	svn_opt_revision_committed,
109	svn_opt_revision_previous,
110	svn_opt_revision_base,
111	svn_opt_revision_working,
112	svn_opt_revision_head
113	} svn_opt_revision_kind;
114	typedef union svn_opt_revision_value_t
115	{
116	svn_revnum_t number;
117	apr_time_t date;
118	} svn_opt_revision_value_t;
119	typedef struct svn_opt_revision_t
120	{
121	svn_opt_revision_kind kind;
122	svn_opt_revision_value_t value;
123	} svn_opt_revision_t;
124	typedef enum svn_depth_t
125	{
126	svn_depth_unknown = -2,
127	svn_depth_exclude,
128	svn_depth_empty,
129	svn_depth_files,
130	svn_depth_immediates,
131	svn_depth_infinity
132	} svn_depth_t;
133
134	#endif /* SCM_WITH_DYNAMIC_LIB_SVN && !SCM_WITH_SVN_HEADERS */
135
136
137	/*********************************************************************************************************************************
138	* Global Variables *
139	*********************************************************************************************************************************/
140	static char g_szSvnPath[RTPATH_MAX];
141	static enum
142	{
143	kScmSvnVersion_Ancient = 1,
144	kScmSvnVersion_1_6,
145	kScmSvnVersion_1_7,
146	kScmSvnVersion_1_8,
147	kScmSvnVersion_End
148	} g_enmSvnVersion = kScmSvnVersion_Ancient;
149
150
151	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
152	/** Set if all the function pointers are valid. */
153	static bool g_fSvnFunctionPointersValid;
154	/** @name SVN and APR imports.
155	* @{ */
156	static apr_status_t (APR_CALL *g_pfnAprInitialize)(void);
157	static apr_hash_index_t * (APR_CALL g_pfnAprHashFirst)(apr_pool_t pPool, apr_hash_t *pHashTab);
158	static apr_hash_index_t * (APR_CALL g_pfnAprHashNext)(apr_hash_index_t pCurIdx);
159	static void * (APR_CALL g_pfnAprHashThisVal)(apr_hash_index_t pHashIdx);
160	static apr_pool_t * (SVN_CALL g_pfnSvnPoolCreateEx)(apr_pool_t pParent, void *pvAllocator);
161	static void (APR_CALL g_pfnAprPoolClear)(apr_pool_t pPool);
162	static void (APR_CALL g_pfnAprPoolDestroy)(apr_pool_t pPool);
163
164	static svn_error_t * (SVN_CALL g_pfnSvnClientCreateContext)(svn_client_ctx_t ppCtx, apr_pool_t pPool);
165	static svn_error_t * (SVN_CALL g_pfnSvnClientPropGet4)(apr_hash_t ppHashProps, const char pszPropName,
166	const char pszTarget, const svn_opt_revision_t pPeggedRev,
167	const svn_opt_revision_t pRevision, svn_revnum_t pActualRev,
168	svn_depth_t enmDepth, const apr_array_header_t *pChangeList,
169	svn_client_ctx_t pCtx, apr_pool_t pResultPool,
170	apr_pool_t *pScratchPool);
171	/*@} /
172
173	/** Cached APR pool. */
174	static apr_pool_t *g_pSvnPool = NULL;
175	/** Cached SVN client context. */
176	static svn_client_ctx_t *g_pSvnClientCtx = NULL;
177	/** Number of times the current context has been used. */
178	static uint32_t g_cSvnClientCtxUsed = 0;
179
180	#endif
181
182
183	/*********************************************************************************************************************************
184	* Internal Functions *
185	*********************************************************************************************************************************/
186	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
187	static void scmSvnFlushClientContextAndPool(void);
188	#endif
189
190
191
192	/**
193	* Callback that is call for each path to search.
194	*/
195	static DECLCALLBACK(int) scmSvnFindSvnBinaryCallback(char const pchPath, size_t cchPath, void pvUser1, void *pvUser2)
196	{
197	char pszDst = (char )pvUser1;
198	size_t cchDst = (size_t)pvUser2;
199	if (cchDst > cchPath)
200	{
201	memcpy(pszDst, pchPath, cchPath);
202	pszDst[cchPath] = '\0';
203	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
204	int rc = RTPathAppend(pszDst, cchDst, "svn.exe");
205	#else
206	int rc = RTPathAppend(pszDst, cchDst, "svn");
207	#endif
208	if ( RT_SUCCESS(rc)
209	&& RTFileExists(pszDst))
210	return VINF_SUCCESS;
211	}
212	return VERR_TRY_AGAIN;
213	}
214
215
216	/**
217	* Reads from a pipe.
218	*
219	* @returns @a rc or other status code.
220	* @param rc The current status of the operation. Error status
221	* are preserved and returned.
222	* @param phPipeR Pointer to the pipe handle.
223	* @param pcbAllocated Pointer to the buffer size variable.
224	* @param poffCur Pointer to the buffer offset variable.
225	* @param ppszBuffer Pointer to the buffer pointer variable.
226	*/
227	static int rtProcProcessOutput(int rc, PRTPIPE phPipeR, size_t pcbAllocated, size_t poffCur, char **ppszBuffer,
228	RTPOLLSET hPollSet, uint32_t idPollSet)
229	{
230	size_t cbRead;
231	char szTmp[_4K - 1];
232	for (;;)
233	{
234	int rc2 = RTPipeRead(*phPipeR, szTmp, sizeof(szTmp), &cbRead);
235	if (RT_SUCCESS(rc2) && cbRead)
236	{
237	/* Resize the buffer. */
238	if (poffCur + cbRead >= pcbAllocated)
239	{
240	if (*pcbAllocated >= _1G)
241	{
242	RTPollSetRemove(hPollSet, idPollSet);
243	rc2 = RTPipeClose(*phPipeR); AssertRC(rc2);
244	*phPipeR = NIL_RTPIPE;
245	return RT_SUCCESS(rc) ? VERR_TOO_MUCH_DATA : rc;
246	}
247
248	size_t cbNew = pcbAllocated ? pcbAllocated * 2 : sizeof(szTmp) + 1;
249	Assert(*poffCur + cbRead < cbNew);
250	rc2 = RTStrRealloc(ppszBuffer, cbNew);
251	if (RT_FAILURE(rc2))
252	{
253	RTPollSetRemove(hPollSet, idPollSet);
254	rc2 = RTPipeClose(*phPipeR); AssertRC(rc2);
255	*phPipeR = NIL_RTPIPE;
256	return RT_SUCCESS(rc) ? rc2 : rc;
257	}
258	*pcbAllocated = cbNew;
259	}
260
261	/* Append the new data, terminating it. */
262	memcpy(ppszBuffer + poffCur, szTmp, cbRead);
263	*poffCur += cbRead;
264	(ppszBuffer)[poffCur] = '\0';
265
266	/* Check for null terminators in the string. */
267	if (RT_SUCCESS(rc) && memchr(szTmp, '\0', cbRead))
268	rc = VERR_NO_TRANSLATION;
269
270	/* If we read a full buffer, try read some more. */
271	if (RT_SUCCESS(rc) && cbRead == sizeof(szTmp))
272	continue;
273	}
274	else if (rc2 != VINF_TRY_AGAIN)
275	{
276	if (RT_FAILURE(rc) && rc2 != VERR_BROKEN_PIPE)
277	rc = rc2;
278	RTPollSetRemove(hPollSet, idPollSet);
279	rc2 = RTPipeClose(*phPipeR); AssertRC(rc2);
280	*phPipeR = NIL_RTPIPE;
281	}
282	return rc;
283	}
284	}
285
286	/** @name RTPROCEXEC_FLAGS_XXX - flags for RTProcExec and RTProcExecToString.
287	* @{ */
288	/** Redirect /dev/null to standard input. */
289	#define RTPROCEXEC_FLAGS_STDIN_NULL RT_BIT_32(0)
290	/** Redirect standard output to /dev/null. */
291	#define RTPROCEXEC_FLAGS_STDOUT_NULL RT_BIT_32(1)
292	/** Redirect standard error to /dev/null. */
293	#define RTPROCEXEC_FLAGS_STDERR_NULL RT_BIT_32(2)
294	/** Redirect all standard output to /dev/null as well as directing /dev/null
295	* to standard input. */
296	#define RTPROCEXEC_FLAGS_STD_NULL ( RTPROCEXEC_FLAGS_STDIN_NULL \
297	\| RTPROCEXEC_FLAGS_STDOUT_NULL \
298	\| RTPROCEXEC_FLAGS_STDERR_NULL)
299	/** Mask containing the valid flags. */
300	#define RTPROCEXEC_FLAGS_VALID_MASK UINT32_C(0x00000007)
301	/** @} */
302
303	/**
304	* Runs a process, collecting the standard output and/or standard error.
305	*
306	*
307	* @returns IPRT status code
308	* @retval VERR_NO_TRANSLATION if the output of the program isn't valid UTF-8
309	* or contains a nul character.
310	* @retval VERR_TOO_MUCH_DATA if the process produced too much data.
311	*
312	* @param pszExec Executable image to use to create the child process.
313	* @param papszArgs Pointer to an array of arguments to the child. The
314	* array terminated by an entry containing NULL.
315	* @param hEnv Handle to the environment block for the child.
316	* @param fFlags A combination of RTPROCEXEC_FLAGS_XXX. The @a
317	* ppszStdOut and @a ppszStdErr parameters takes precedence
318	* over redirection flags.
319	* @param pStatus Where to return the status on success.
320	* @param ppszStdOut Where to return the text written to standard output. If
321	* NULL then standard output will not be collected and go
322	* to the standard output handle of the process.
323	* Free with RTStrFree, regardless of return status.
324	* @param ppszStdErr Where to return the text written to standard error. If
325	* NULL then standard output will not be collected and go
326	* to the standard error handle of the process.
327	* Free with RTStrFree, regardless of return status.
328	*/
329	static int RTProcExecToString(const char pszExec, const char const *papszArgs, RTENV hEnv, uint32_t fFlags,
330	PRTPROCSTATUS pStatus, char ppszStdOut, char ppszStdErr)
331	{
332	int rc2;
333
334	/*
335	* Clear output arguments (no returning failure here, simply crash!).
336	*/
337	AssertPtr(pStatus);
338	pStatus->enmReason = RTPROCEXITREASON_ABEND;
339	pStatus->iStatus = RTEXITCODE_FAILURE;
340	AssertPtrNull(ppszStdOut);
341	if (ppszStdOut)
342	*ppszStdOut = NULL;
343	AssertPtrNull(ppszStdOut);
344	if (ppszStdErr)
345	*ppszStdErr = NULL;
346
347	/*
348	* Check input arguments.
349	*/
350	AssertReturn(!(fFlags & ~RTPROCEXEC_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
351
352	/*
353	* Do we need a standard input bitbucket?
354	*/
355	int rc = VINF_SUCCESS;
356	PRTHANDLE phChildStdIn = NULL;
357	RTHANDLE hChildStdIn;
358	hChildStdIn.enmType = RTHANDLETYPE_FILE;
359	hChildStdIn.u.hFile = NIL_RTFILE;
360	if ((fFlags & RTPROCEXEC_FLAGS_STDIN_NULL) && RT_SUCCESS(rc))
361	{
362	phChildStdIn = &hChildStdIn;
363	rc = RTFileOpenBitBucket(&hChildStdIn.u.hFile, RTFILE_O_READ);
364	}
365
366	/*
367	* Create the output pipes / bitbuckets.
368	*/
369	RTPIPE hPipeStdOutR = NIL_RTPIPE;
370	PRTHANDLE phChildStdOut = NULL;
371	RTHANDLE hChildStdOut;
372	hChildStdOut.enmType = RTHANDLETYPE_PIPE;
373	hChildStdOut.u.hPipe = NIL_RTPIPE;
374	if (ppszStdOut && RT_SUCCESS(rc))
375	{
376	phChildStdOut = &hChildStdOut;
377	rc = RTPipeCreate(&hPipeStdOutR, &hChildStdOut.u.hPipe, 0 /fFlags/);
378	}
379	else if ((fFlags & RTPROCEXEC_FLAGS_STDOUT_NULL) && RT_SUCCESS(rc))
380	{
381	phChildStdOut = &hChildStdOut;
382	hChildStdOut.enmType = RTHANDLETYPE_FILE;
383	hChildStdOut.u.hFile = NIL_RTFILE;
384	rc = RTFileOpenBitBucket(&hChildStdOut.u.hFile, RTFILE_O_WRITE);
385	}
386
387	RTPIPE hPipeStdErrR = NIL_RTPIPE;
388	PRTHANDLE phChildStdErr = NULL;
389	RTHANDLE hChildStdErr;
390	hChildStdErr.enmType = RTHANDLETYPE_PIPE;
391	hChildStdErr.u.hPipe = NIL_RTPIPE;
392	if (ppszStdErr && RT_SUCCESS(rc))
393	{
394	phChildStdErr = &hChildStdErr;
395	rc = RTPipeCreate(&hPipeStdErrR, &hChildStdErr.u.hPipe, 0 /fFlags/);
396	}
397	else if ((fFlags & RTPROCEXEC_FLAGS_STDERR_NULL) && RT_SUCCESS(rc))
398	{
399	phChildStdErr = &hChildStdErr;
400	hChildStdErr.enmType = RTHANDLETYPE_FILE;
401	hChildStdErr.u.hFile = NIL_RTFILE;
402	rc = RTFileOpenBitBucket(&hChildStdErr.u.hFile, RTFILE_O_WRITE);
403	}
404
405	if (RT_SUCCESS(rc))
406	{
407	RTPOLLSET hPollSet;
408	rc = RTPollSetCreate(&hPollSet);
409	if (RT_SUCCESS(rc))
410	{
411	if (hPipeStdOutR != NIL_RTPIPE && RT_SUCCESS(rc))
412	rc = RTPollSetAddPipe(hPollSet, hPipeStdOutR, RTPOLL_EVT_READ \| RTPOLL_EVT_ERROR, 1);
413	if (hPipeStdErrR != NIL_RTPIPE)
414	rc = RTPollSetAddPipe(hPollSet, hPipeStdErrR, RTPOLL_EVT_READ \| RTPOLL_EVT_ERROR, 2);
415	}
416	if (RT_SUCCESS(rc))
417	{
418	/*
419	* Create the process.
420	*/
421	RTPROCESS hProc;
422	rc = RTProcCreateEx(pszExec,
423	papszArgs,
424	hEnv,
425	0 /fFlags/,
426	NULL /phStdIn/,
427	phChildStdOut,
428	phChildStdErr,
429	NULL /pszAsUser/,
430	NULL /pszPassword/,
431	NULL /pvExtraData/,
432	&hProc);
433	rc2 = RTHandleClose(&hChildStdErr); AssertRC(rc2);
434	rc2 = RTHandleClose(&hChildStdOut); AssertRC(rc2);
435
436	if (RT_SUCCESS(rc))
437	{
438	/*
439	* Process output and wait for the process to finish.
440	*/
441	size_t cbStdOut = 0;
442	size_t offStdOut = 0;
443	size_t cbStdErr = 0;
444	size_t offStdErr = 0;
445	for (;;)
446	{
447	if (hPipeStdOutR != NIL_RTPIPE)
448	rc = rtProcProcessOutput(rc, &hPipeStdOutR, &cbStdOut, &offStdOut, ppszStdOut, hPollSet, 1);
449	if (hPipeStdErrR != NIL_RTPIPE)
450	rc = rtProcProcessOutput(rc, &hPipeStdErrR, &cbStdErr, &offStdErr, ppszStdErr, hPollSet, 2);
451	if (hPipeStdOutR == NIL_RTPIPE && hPipeStdErrR == NIL_RTPIPE)
452	break;
453
454	if (hProc != NIL_RTPROCESS)
455	{
456	rc2 = RTProcWait(hProc, RTPROCWAIT_FLAGS_NOBLOCK, pStatus);
457	if (rc2 != VERR_PROCESS_RUNNING)
458	{
459	if (RT_FAILURE(rc2))
460	rc = rc2;
461	hProc = NIL_RTPROCESS;
462	}
463	}
464
465	rc2 = RTPoll(hPollSet, 10000, NULL, NULL);
466	Assert(RT_SUCCESS(rc2) \|\| rc2 == VERR_TIMEOUT);
467	}
468
469	if (RT_SUCCESS(rc))
470	{
471	if ( (ppszStdOut && ppszStdOut && !RTStrIsValidEncoding(ppszStdOut))
472	\|\| (ppszStdErr && ppszStdErr && !RTStrIsValidEncoding(ppszStdErr)) )
473	rc = VERR_NO_TRANSLATION;
474	}
475
476	/*
477	* No more output, just wait for it to finish.
478	*/
479	if (hProc != NIL_RTPROCESS)
480	{
481	rc2 = RTProcWait(hProc, RTPROCWAIT_FLAGS_BLOCK, pStatus);
482	if (RT_FAILURE(rc2))
483	rc = rc2;
484	}
485	}
486	RTPollSetDestroy(hPollSet);
487	}
488	}
489
490	rc2 = RTHandleClose(&hChildStdErr); AssertRC(rc2);
491	rc2 = RTHandleClose(&hChildStdOut); AssertRC(rc2);
492	rc2 = RTHandleClose(&hChildStdIn); AssertRC(rc2);
493	rc2 = RTPipeClose(hPipeStdErrR); AssertRC(rc2);
494	rc2 = RTPipeClose(hPipeStdOutR); AssertRC(rc2);
495	return rc;
496	}
497
498
499	/**
500	* Runs a process, waiting for it to complete.
501	*
502	* @returns IPRT status code
503	*
504	* @param pszExec Executable image to use to create the child process.
505	* @param papszArgs Pointer to an array of arguments to the child. The
506	* array terminated by an entry containing NULL.
507	* @param hEnv Handle to the environment block for the child.
508	* @param fFlags A combination of RTPROCEXEC_FLAGS_XXX.
509	* @param pStatus Where to return the status on success.
510	*/
511	static int RTProcExec(const char pszExec, const char const *papszArgs, RTENV hEnv, uint32_t fFlags,
512	PRTPROCSTATUS pStatus)
513	{
514	int rc;
515
516	/*
517	* Clear output argument (no returning failure here, simply crash!).
518	*/
519	AssertPtr(pStatus);
520	pStatus->enmReason = RTPROCEXITREASON_ABEND;
521	pStatus->iStatus = RTEXITCODE_FAILURE;
522
523	/*
524	* Check input arguments.
525	*/
526	AssertReturn(!(fFlags & ~RTPROCEXEC_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
527
528	/*
529	* Set up /dev/null redirections.
530	*/
531	PRTHANDLE aph[3] = { NULL, NULL, NULL };
532	RTHANDLE ah[3];
533	for (uint32_t i = 0; i < 3; i++)
534	{
535	ah[i].enmType = RTHANDLETYPE_FILE;
536	ah[i].u.hFile = NIL_RTFILE;
537	}
538	rc = VINF_SUCCESS;
539	if ((fFlags & RTPROCEXEC_FLAGS_STDIN_NULL) && RT_SUCCESS(rc))
540	{
541	aph[0] = &ah[0];
542	rc = RTFileOpenBitBucket(&ah[0].u.hFile, RTFILE_O_READ);
543	}
544	if ((fFlags & RTPROCEXEC_FLAGS_STDOUT_NULL) && RT_SUCCESS(rc))
545	{
546	aph[1] = &ah[1];
547	rc = RTFileOpenBitBucket(&ah[1].u.hFile, RTFILE_O_WRITE);
548	}
549	if ((fFlags & RTPROCEXEC_FLAGS_STDERR_NULL) && RT_SUCCESS(rc))
550	{
551	aph[2] = &ah[2];
552	rc = RTFileOpenBitBucket(&ah[2].u.hFile, RTFILE_O_WRITE);
553	}
554
555	/*
556	* Create the process.
557	*/
558	RTPROCESS hProc = NIL_RTPROCESS;
559	if (RT_SUCCESS(rc))
560	rc = RTProcCreateEx(pszExec,
561	papszArgs,
562	hEnv,
563	0 /fFlags/,
564	aph[0],
565	aph[1],
566	aph[2],
567	NULL /pszAsUser/,
568	NULL /pszPassword/,
569	NULL /pvExtraData/,
570	&hProc);
571
572	for (uint32_t i = 0; i < 3; i++)
573	RTFileClose(ah[i].u.hFile);
574
575	if (RT_SUCCESS(rc))
576	rc = RTProcWait(hProc, RTPROCWAIT_FLAGS_BLOCK, pStatus);
577	return rc;
578	}
579
580
581
582	/**
583	* Executes SVN and gets the output.
584	*
585	* Standard error is suppressed.
586	*
587	* @returns VINF_SUCCESS if the command executed successfully.
588	* @param pState The rewrite state to work on. Can be NULL.
589	* @param papszArgs The SVN argument.
590	* @param fNormalFailureOk Whether normal failure is ok.
591	* @param ppszStdOut Where to return the output on success.
592	*/
593	static int scmSvnRunAndGetOutput(PSCMRWSTATE pState, const char papszArgs, bool fNormalFailureOk, char ppszStdOut)
594	{
595	*ppszStdOut = NULL;
596
597	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
598	scmSvnFlushClientContextAndPool();
599	#endif
600
601	char *pszCmdLine = NULL;
602	int rc = RTGetOptArgvToString(&pszCmdLine, papszArgs, RTGETOPTARGV_CNV_QUOTE_BOURNE_SH);
603	if (RT_FAILURE(rc))
604	return rc;
605	ScmVerbose(pState, 2, "executing: %s\n", pszCmdLine);
606
607	RTPROCSTATUS Status;
608	rc = RTProcExecToString(g_szSvnPath, papszArgs, RTENV_DEFAULT,
609	RTPROCEXEC_FLAGS_STD_NULL, &Status, ppszStdOut, NULL);
610
611	if ( RT_SUCCESS(rc)
612	&& ( Status.enmReason != RTPROCEXITREASON_NORMAL
613	\|\| Status.iStatus != 0) )
614	{
615	if (fNormalFailureOk \|\| Status.enmReason != RTPROCEXITREASON_NORMAL)
616	RTMsgError("%s: %s -> %s %u\n",
617	pState ? pState->pszFilename : "<NONE>", pszCmdLine,
618	Status.enmReason == RTPROCEXITREASON_NORMAL ? "exit code"
619	: Status.enmReason == RTPROCEXITREASON_SIGNAL ? "signal"
620	: Status.enmReason == RTPROCEXITREASON_ABEND ? "abnormal end"
621	: "abducted by alien",
622	Status.iStatus);
623	rc = VERR_GENERAL_FAILURE;
624	}
625	else if (RT_FAILURE(rc))
626	{
627	if (pState)
628	RTMsgError("%s: executing: %s => %Rrc\n", pState->pszFilename, pszCmdLine, rc);
629	else
630	RTMsgError("executing: %s => %Rrc\n", pszCmdLine, rc);
631	}
632
633	if (RT_FAILURE(rc))
634	{
635	RTStrFree(*ppszStdOut);
636	*ppszStdOut = NULL;
637	}
638	RTStrFree(pszCmdLine);
639	return rc;
640	}
641
642
643	/**
644	* Executes SVN.
645	*
646	* Standard error and standard output is suppressed.
647	*
648	* @returns VINF_SUCCESS if the command executed successfully.
649	* @param pState The rewrite state to work on.
650	* @param papszArgs The SVN argument.
651	* @param fNormalFailureOk Whether normal failure is ok.
652	*/
653	static int scmSvnRun(PSCMRWSTATE pState, const char **papszArgs, bool fNormalFailureOk)
654	{
655	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
656	scmSvnFlushClientContextAndPool();
657	#endif
658
659	char *pszCmdLine = NULL;
660	int rc = RTGetOptArgvToString(&pszCmdLine, papszArgs, RTGETOPTARGV_CNV_QUOTE_BOURNE_SH);
661	if (RT_FAILURE(rc))
662	return rc;
663	ScmVerbose(pState, 2, "executing: %s\n", pszCmdLine);
664
665	/* Lazy bird uses RTProcExec. */
666	RTPROCSTATUS Status;
667	rc = RTProcExec(g_szSvnPath, papszArgs, RTENV_DEFAULT, RTPROCEXEC_FLAGS_STD_NULL, &Status);
668
669	if ( RT_SUCCESS(rc)
670	&& ( Status.enmReason != RTPROCEXITREASON_NORMAL
671	\|\| Status.iStatus != 0) )
672	{
673	if (fNormalFailureOk \|\| Status.enmReason != RTPROCEXITREASON_NORMAL)
674	RTMsgError("%s: %s -> %s %u\n",
675	pState->pszFilename,
676	pszCmdLine,
677	Status.enmReason == RTPROCEXITREASON_NORMAL ? "exit code"
678	: Status.enmReason == RTPROCEXITREASON_SIGNAL ? "signal"
679	: Status.enmReason == RTPROCEXITREASON_ABEND ? "abnormal end"
680	: "abducted by alien",
681	Status.iStatus);
682	rc = VERR_GENERAL_FAILURE;
683	}
684	else if (RT_FAILURE(rc))
685	RTMsgError("%s: %s -> %Rrc\n", pState->pszFilename, pszCmdLine, rc);
686
687	RTStrFree(pszCmdLine);
688	return rc;
689	}
690
691
692	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
693	/**
694	* Attempts to resolve the necessary subversion and apache portable runtime APIs
695	* we require dynamically.
696	*
697	* Will set all global function pointers and g_fSvnFunctionPointersValid to true
698	* on success.
699	*/
700	static void scmSvnTryResolveFunctions(void)
701	{
702	char szPath[RTPATH_MAX];
703	int rc = RTStrCopy(szPath, sizeof(szPath), g_szSvnPath);
704	if (RT_SUCCESS(rc))
705	{
706	RTPathStripFilename(szPath);
707	char *pszEndPath = strchr(szPath, '\0');
708	# ifdef RT_OS_WINDOWS
709	RTPathChangeToDosSlashes(szPath, false);
710	# endif
711
712	/*
713	* Try various prefixes/suffxies/locations.
714	*/
715	static struct
716	{
717	const char *pszPrefix;
718	const char *pszSuffix;
719	} const s_aVariations[] =
720	{
721	# ifdef RT_OS_WINDOWS
722	{ "SlikSvn-lib", "-1.dll" }, /* SlikSVN */
723	{ "lib", "-1.dll" }, /* Win32Svn,CollabNet,++ */
724	# elif defined(RT_OS_DARWIN)
725	{ "../lib/lib", "-1.dylib" },
726	# else
727	{ "../lib/lib", ".so" },
728	{ "../lib/lib", "-1.so" },
729	# if ARCH_BITS == 32
730	{ "../lib32/lib", ".so" },
731	{ "../lib32/lib", "-1.so" },
732	# else
733	{ "../lib64/lib", ".so" },
734	{ "../lib64/lib", "-1.so" },
735	# ifdef RT_OS_SOLARIS
736	{ "../lib/svn/amd64/lib", ".so" },
737	{ "../lib/svn/amd64/lib", "-1.so" },
738	{ "../apr/1.6/lib/amd64/lib", ".so" },
739	{ "../apr/1.6/lib/amd64/lib", "-1.so" },
740	# endif
741	# endif
742	# ifdef RT_ARCH_X86
743	{ "../lib/i386-linux-gnu/lib", ".so" },
744	{ "../lib/i386-linux-gnu/lib", "-1.so" },
745	# elif defined(RT_ARCH_AMD64)
746	{ "../lib/x86_64-linux-gnu/lib", ".so" },
747	{ "../lib/x86_64-linux-gnu/lib", "-1.so" },
748	# endif
749	# endif
750	};
751	for (unsigned iVar = 0; iVar < RT_ELEMENTS(s_aVariations); iVar++)
752	{
753	/*
754	* Try load the svn_client library ...
755	*/
756	static const char * const s_apszLibraries[] = { "svn_client", "svn_subr", "apr" };
757	RTLDRMOD ahMods[RT_ELEMENTS(s_apszLibraries)] = { NIL_RTLDRMOD, NIL_RTLDRMOD, NIL_RTLDRMOD };
758
759	rc = VINF_SUCCESS;
760	unsigned iLib;
761	for (iLib = 0; iLib < RT_ELEMENTS(s_apszLibraries) && RT_SUCCESS(rc); iLib++)
762	{
763	static const char * const s_apszSuffixes[] = { "", ".0", ".1" };
764	for (unsigned iSuff = 0; iSuff < RT_ELEMENTS(s_apszSuffixes); iSuff++)
765	{
766	*pszEndPath = '\0';
767	rc = RTPathAppend(szPath, sizeof(szPath), s_aVariations[iVar].pszPrefix);
768	if (RT_SUCCESS(rc))
769	rc = RTStrCat(szPath, sizeof(szPath), s_apszLibraries[iLib]);
770	if (RT_SUCCESS(rc))
771	rc = RTStrCat(szPath, sizeof(szPath), s_aVariations[iVar].pszSuffix);
772	if (RT_SUCCESS(rc))
773	rc = RTStrCat(szPath, sizeof(szPath), s_apszSuffixes[iSuff]);
774	if (RT_SUCCESS(rc))
775	{
776	# ifdef RT_OS_WINDOWS
777	RTPathChangeToDosSlashes(pszEndPath, false);
778	# endif
779	rc = RTLdrLoadEx(szPath, &ahMods[iLib], RTLDRLOAD_FLAGS_NT_SEARCH_DLL_LOAD_DIR , NULL);
780	if (RT_SUCCESS(rc))
781	{
782	RTMEM_WILL_LEAK(ahMods[iLib]);
783	break;
784	}
785	}
786	}
787	# ifdef RT_OS_SOLARIS
788	/*
789	* HACK: Solaris may keep libapr.so separately from svn, so do a separate search for it.
790	*/
791	/** @todo It would make a lot more sense to use the dlfcn.h machinery to figure
792	* out which libapr.so file was loaded into the process together with
793	* the two svn libraries and get a dlopen handle for it. We risk ending
794	* up with the completely wrong libapr here! */
795	if (iLib == RT_ELEMENTS(s_apszLibraries) - 1 && RT_FAILURE(rc))
796	{
797	ahMods[iLib] = NIL_RTLDRMOD;
798	for (unsigned iVar2 = 0; iVar2 < RT_ELEMENTS(s_aVariations) && ahMods[iLib] == NIL_RTLDRMOD; iVar2++)
799	for (unsigned iSuff2 = 0; iSuff2 < RT_ELEMENTS(s_apszSuffixes) && ahMods[iLib] == NIL_RTLDRMOD; iSuff2++)
800	{
801	*pszEndPath = '\0';
802	rc = RTPathAppend(szPath, sizeof(szPath), s_aVariations[iVar2].pszPrefix);
803	if (RT_SUCCESS(rc))
804	rc = RTStrCat(szPath, sizeof(szPath), s_apszLibraries[iLib]);
805	if (RT_SUCCESS(rc))
806	rc = RTStrCat(szPath, sizeof(szPath), s_aVariations[iVar2].pszSuffix);
807	if (RT_SUCCESS(rc))
808	rc = RTStrCat(szPath, sizeof(szPath), s_apszSuffixes[iSuff2]);
809	if (RT_SUCCESS(rc))
810	rc = RTLdrLoadEx(szPath, &ahMods[iLib], RTLDRLOAD_FLAGS_NT_SEARCH_DLL_LOAD_DIR, NULL);
811	if (RT_SUCCESS(rc))
812	RTMEM_WILL_LEAK(ahMods[iLib]);
813	else
814	ahMods[iLib] = NIL_RTLDRMOD;
815	}
816	}
817	# endif /* RT_OS_SOLARIS */
818	}
819	if (iLib == RT_ELEMENTS(s_apszLibraries) && RT_SUCCESS(rc))
820	{
821	static const struct
822	{
823	unsigned iLib;
824	const char *pszSymbol;
825	uintptr_t ppfn; /< The nothrow attrib of PFNRT goes down the wrong way with Clang 11, thus uintptr_t. /
826	} s_aSymbols[] =
827	{
828	{ 2, "apr_initialize", (uintptr_t *)&g_pfnAprInitialize },
829	{ 2, "apr_hash_first", (uintptr_t *)&g_pfnAprHashFirst },
830	{ 2, "apr_hash_next", (uintptr_t *)&g_pfnAprHashNext },
831	{ 2, "apr_hash_this_val", (uintptr_t *)&g_pfnAprHashThisVal },
832	{ 1, "svn_pool_create_ex", (uintptr_t *)&g_pfnSvnPoolCreateEx },
833	{ 2, "apr_pool_clear", (uintptr_t *)&g_pfnAprPoolClear },
834	{ 2, "apr_pool_destroy", (uintptr_t *)&g_pfnAprPoolDestroy },
835	{ 0, "svn_client_create_context", (uintptr_t *)&g_pfnSvnClientCreateContext },
836	{ 0, "svn_client_propget4", (uintptr_t *)&g_pfnSvnClientPropGet4 },
837	};
838	for (unsigned i = 0; i < RT_ELEMENTS(s_aSymbols); i++)
839	{
840	rc = RTLdrGetSymbol(ahMods[s_aSymbols[i].iLib], s_aSymbols[i].pszSymbol,
841	(void **)(uintptr_t)s_aSymbols[i].ppfn);
842	if (RT_FAILURE(rc))
843	{
844	ScmVerbose(NULL, 0, "Failed to resolve '%s' in '%s'",
845	s_aSymbols[i].pszSymbol, s_apszLibraries[s_aSymbols[i].iLib]);
846	break;
847	}
848	}
849	if (RT_SUCCESS(rc))
850	{
851	apr_status_t rcApr = g_pfnAprInitialize();
852	if (rcApr == 0)
853	{
854	ScmVerbose(NULL, 1, "Found subversion APIs.\n");
855	g_fSvnFunctionPointersValid = true;
856	}
857	else
858	{
859	ScmVerbose(NULL, 0, "apr_initialize failed: %#x (%d)\n", rcApr, rcApr);
860	AssertMsgFailed(("%#x (%d)\n", rc, rc));
861	}
862	return;
863	}
864	}
865
866	while (iLib-- > 0)
867	RTLdrClose(ahMods[iLib]);
868	}
869	}
870	}
871	#endif /* SCM_WITH_DYNAMIC_LIB_SVN */
872
873
874	/**
875	* Finds the svn binary, updating g_szSvnPath and g_enmSvnVersion.
876	*/
877	static void scmSvnFindSvnBinary(PSCMRWSTATE pState)
878	{
879	/* Already been called? */
880	if (g_szSvnPath[0] != '\0')
881	return;
882
883	/*
884	* Locate it.
885	*/
886	/** @todo code page fun... */
887	#ifdef RT_OS_WINDOWS
888	const char *pszEnvVar = RTEnvGet("Path");
889	#else
890	const char *pszEnvVar = RTEnvGet("PATH");
891	#endif
892	if (pszEnvVar)
893	{
894	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
895	int rc = RTPathTraverseList(pszEnvVar, ';', scmSvnFindSvnBinaryCallback, g_szSvnPath, (void *)sizeof(g_szSvnPath));
896	#else
897	int rc = RTPathTraverseList(pszEnvVar, ':', scmSvnFindSvnBinaryCallback, g_szSvnPath, (void *)sizeof(g_szSvnPath));
898	#endif
899	if (RT_FAILURE(rc))
900	strcpy(g_szSvnPath, "svn");
901	}
902	else
903	strcpy(g_szSvnPath, "svn");
904
905	/*
906	* Check the version.
907	*/
908	const char *apszArgs[] = { g_szSvnPath, "--version", "--quiet", NULL };
909	char *pszVersion;
910	int rc = scmSvnRunAndGetOutput(pState, apszArgs, false, &pszVersion);
911	if (RT_SUCCESS(rc))
912	{
913	char *pszStripped = RTStrStrip(pszVersion);
914	if (RTStrVersionCompare(pszStripped, "1.8") >= 0)
915	g_enmSvnVersion = kScmSvnVersion_1_8;
916	else if (RTStrVersionCompare(pszStripped, "1.7") >= 0)
917	g_enmSvnVersion = kScmSvnVersion_1_7;
918	else if (RTStrVersionCompare(pszStripped, "1.6") >= 0)
919	g_enmSvnVersion = kScmSvnVersion_1_6;
920	else
921	g_enmSvnVersion = kScmSvnVersion_Ancient;
922	RTStrFree(pszVersion);
923	}
924	else
925	g_enmSvnVersion = kScmSvnVersion_Ancient;
926
927	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
928	/*
929	* If we got version 1.8 or later, try see if we can locate a few of the
930	* simpler SVN APIs.
931	*/
932	g_fSvnFunctionPointersValid = false;
933	if (g_enmSvnVersion >= kScmSvnVersion_1_8)
934	scmSvnTryResolveFunctions();
935	#endif
936	}
937
938
939	/**
940	* Construct a dot svn filename for the file being rewritten.
941	*
942	* @returns IPRT status code.
943	* @param pState The rewrite state (for the name).
944	* @param pszDir The directory, including ".svn/".
945	* @param pszSuff The filename suffix.
946	* @param pszDst The output buffer. RTPATH_MAX in size.
947	*/
948	static int scmSvnConstructName(PSCMRWSTATE pState, const char pszDir, const char pszSuff, char *pszDst)
949	{
950	strcpy(pszDst, pState->pszFilename); /* ASSUMES sizeof(szBuf) <= sizeof(szPath) */
951	RTPathStripFilename(pszDst);
952
953	int rc = RTPathAppend(pszDst, RTPATH_MAX, pszDir);
954	if (RT_SUCCESS(rc))
955	{
956	rc = RTPathAppend(pszDst, RTPATH_MAX, RTPathFilename(pState->pszFilename));
957	if (RT_SUCCESS(rc))
958	{
959	size_t cchDst = strlen(pszDst);
960	size_t cchSuff = strlen(pszSuff);
961	if (cchDst + cchSuff < RTPATH_MAX)
962	{
963	memcpy(&pszDst[cchDst], pszSuff, cchSuff + 1);
964	return VINF_SUCCESS;
965	}
966	else
967	rc = VERR_BUFFER_OVERFLOW;
968	}
969	}
970	return rc;
971	}
972
973	/**
974	* Interprets the specified string as decimal numbers.
975	*
976	* @returns true if parsed successfully, false if not.
977	* @param pch The string (not terminated).
978	* @param cch The string length.
979	* @param pu Where to return the value.
980	*/
981	static bool scmSvnReadNumber(const char pch, size_t cch, size_t pu)
982	{
983	size_t u = 0;
984	while (cch-- > 0)
985	{
986	char ch = *pch++;
987	if (ch < '0' \|\| ch > '9')
988	return false;
989	u *= 10;
990	u += ch - '0';
991	}
992	*pu = u;
993	return true;
994	}
995
996
997	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
998
999	/**
1000	* Wrapper around RTPathAbs.
1001	* @returns Same as RTPathAbs.
1002	* @param pszPath The relative path.
1003	* @param pszAbsPath Where to return the absolute path.
1004	* @param cbAbsPath Size of the @a pszAbsPath buffer.
1005	*/
1006	static int scmSvnAbsPath(const char pszPath, char pszAbsPath, size_t cbAbsPath)
1007	{
1008	int rc = RTPathAbs(pszPath, pszAbsPath, cbAbsPath);
1009	# if RTPATH_STYLE == RTPATH_STR_F_STYLE_DOS
1010	if (RT_SUCCESS(rc))
1011	{
1012	RTPathChangeToUnixSlashes(pszAbsPath, true /fForce/);
1013	/* To avoid: svn: E235000: In file '..\..\..\subversion\libsvn_client\prop_commands.c' line 796: assertion failed (svn_dirent_is_absolute(target)) */
1014	if (pszAbsPath[1] == ':')
1015	pszAbsPath[0] = RT_C_TO_UPPER(pszAbsPath[0]);
1016	}
1017	# endif
1018	return rc;
1019	}
1020
1021
1022	/**
1023	* Gets a client context and pool.
1024	*
1025	* This implements caching.
1026	*
1027	* @returns IPRT status code.
1028	* @param ppCtx Where to return the context
1029	* @param ppPool Where to return the pool.
1030	*/
1031	static int scmSvnGetClientContextAndPool(svn_client_ctx_t ppCtx, apr_pool_t ppPool)
1032	{
1033	/*
1034	* Use cached if present.
1035	*/
1036	if (g_pSvnClientCtx && g_pSvnPool)
1037	{
1038	g_cSvnClientCtxUsed++;
1039	*ppCtx = g_pSvnClientCtx;
1040	*ppPool = g_pSvnPool;
1041	return VINF_SUCCESS;
1042	}
1043	Assert(!g_pSvnClientCtx);
1044	Assert(!g_pSvnPool);
1045
1046	/*
1047	* Create new pool and context.
1048	*/
1049	apr_pool_t *pPool = g_pfnSvnPoolCreateEx(NULL, NULL);
1050	if (pPool)
1051	{
1052	svn_client_ctx_t *pCtx = NULL;
1053	svn_error_t *pErr = g_pfnSvnClientCreateContext(&pCtx, pPool);
1054	if (!pErr)
1055	{
1056	g_cSvnClientCtxUsed = 1;
1057	g_pSvnClientCtx = *ppCtx = pCtx;
1058	g_pSvnPool = *ppPool = pPool;
1059	return VINF_SUCCESS;
1060	}
1061	g_pfnAprPoolDestroy(pPool);
1062	}
1063
1064	*ppCtx = NULL;
1065	*ppPool = NULL;
1066	return VERR_GENERAL_FAILURE;
1067	}
1068
1069
1070	/**
1071	* Puts back a client context and pool after use.
1072	*
1073	* @param pCtx The context.
1074	* @param pPool The pool.
1075	* @param fFlush Whether to flush it.
1076	*/
1077	static void scmSvnPutClientContextAndPool(svn_client_ctx_t pCtx, apr_pool_t pPool, bool fFlush)
1078	{
1079	if (fFlush \|\| g_cSvnClientCtxUsed > 4096) /* Disable this to force new context every time. */
1080	{
1081	g_pfnAprPoolDestroy(pPool);
1082	g_pSvnPool = NULL;
1083	g_pSvnClientCtx = NULL;
1084	}
1085	RT_NOREF(pCtx, fFlush);
1086	}
1087
1088
1089	/**
1090	* Flushes the cached client context and pool
1091	*/
1092	static void scmSvnFlushClientContextAndPool(void)
1093	{
1094	if (g_pSvnPool)
1095	scmSvnPutClientContextAndPool(g_pSvnClientCtx, g_pSvnPool, true /fFlush/);
1096	Assert(!g_pSvnPool);
1097	}
1098
1099
1100	/**
1101	* Checks if @a pszPath exists in the current WC.
1102	*
1103	* @returns true, false or -1. In the latter case, please use the fallback.
1104	* @param pszPath Path to the object that should be investigated.
1105	*/
1106	static int scmSvnIsObjectInWorkingCopy(const char *pszPath)
1107	{
1108	/* svn_client_propget4 and later requires absolute target path. */
1109	char szAbsPath[RTPATH_MAX];
1110	int rc = scmSvnAbsPath(pszPath, szAbsPath, sizeof(szAbsPath));
1111	if (RT_SUCCESS(rc))
1112	{
1113	apr_pool_t *pPool;
1114	svn_client_ctx_t *pCtx = NULL;
1115	rc = scmSvnGetClientContextAndPool(&pCtx, &pPool);
1116	if (RT_SUCCESS(rc))
1117	{
1118	/* Make the call. */
1119	apr_hash_t *pHash = NULL;
1120	svn_opt_revision_t Rev;
1121	RT_ZERO(Rev);
1122	Rev.kind = svn_opt_revision_working;
1123	Rev.value.number = -1L;
1124	svn_error_t *pErr = g_pfnSvnClientPropGet4(&pHash, "svn:no-such-property", szAbsPath, &Rev, &Rev,
1125	NULL /pActualRev/, svn_depth_empty, NULL /pChangeList/,
1126	pCtx, pPool, pPool);
1127	if (!pErr)
1128	rc = true;
1129	else if (pErr->apr_err == SVN_ERR_UNVERSIONED_RESOURCE)
1130	rc = false;
1131
1132	scmSvnPutClientContextAndPool(pCtx, pPool, false);
1133	}
1134	}
1135	return rc;
1136	}
1137
1138	#endif /* SCM_WITH_DYNAMIC_LIB_SVN */
1139
1140
1141	/**
1142	* Checks if the file we're operating on is part of a SVN working copy.
1143	*
1144	* @returns true if it is, false if it isn't or we cannot tell.
1145	* @param pState The rewrite state to work on. Will use the
1146	* fIsInSvnWorkingCopy member for caching the result.
1147	*/
1148	bool ScmSvnIsInWorkingCopy(PSCMRWSTATE pState)
1149	{
1150	/*
1151	* We don't ask SVN twice as that's expensive.
1152	*/
1153	if (pState->fIsInSvnWorkingCopy != 0)
1154	return pState->fIsInSvnWorkingCopy > 0;
1155
1156	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1157	if (g_fSvnFunctionPointersValid)
1158	{
1159	int rc = scmSvnIsObjectInWorkingCopy(pState->pszFilename);
1160	if (rc == (int)true \|\| rc == (int)false)
1161	{
1162	pState->fIsInSvnWorkingCopy = rc == (int)true ? 1 : -1;
1163	return rc == (int)true;
1164	}
1165	}
1166
1167	/* Fallback: */
1168	#endif
1169	if (g_enmSvnVersion < kScmSvnVersion_1_7)
1170	{
1171	/*
1172	* Hack: check if the .svn/text-base/<file>.svn-base file exists.
1173	*/
1174	char szPath[RTPATH_MAX];
1175	int rc = scmSvnConstructName(pState, ".svn/text-base/", ".svn-base", szPath);
1176	if (RT_SUCCESS(rc))
1177	{
1178	if (RTFileExists(szPath))
1179	{
1180	pState->fIsInSvnWorkingCopy = 1;
1181	return true;
1182	}
1183	}
1184	}
1185	else
1186	{
1187	const char *apszArgs[] = { g_szSvnPath, "proplist", pState->pszFilename, NULL };
1188	char *pszValue;
1189	int rc = scmSvnRunAndGetOutput(pState, apszArgs, true, &pszValue);
1190	if (RT_SUCCESS(rc))
1191	{
1192	RTStrFree(pszValue);
1193	pState->fIsInSvnWorkingCopy = 1;
1194	return true;
1195	}
1196	}
1197	pState->fIsInSvnWorkingCopy = -1;
1198	return false;
1199	}
1200
1201
1202	/**
1203	* Checks if the specified directory is part of a SVN working copy.
1204	*
1205	* @returns true if it is, false if it isn't or we cannot tell.
1206	* @param pszDir The directory in question.
1207	*/
1208	bool ScmSvnIsDirInWorkingCopy(const char *pszDir)
1209	{
1210	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1211	if (g_fSvnFunctionPointersValid)
1212	{
1213	int rc = scmSvnIsObjectInWorkingCopy(pszDir);
1214	if (rc == (int)true \|\| rc == (int)false)
1215	return rc == (int)true;
1216	}
1217
1218	/* Fallback: */
1219	#endif
1220	if (g_enmSvnVersion < kScmSvnVersion_1_7)
1221	{
1222	/*
1223	* Hack: check if the .svn/ dir exists.
1224	*/
1225	char szPath[RTPATH_MAX];
1226	int rc = RTPathJoin(szPath, sizeof(szPath), pszDir, ".svn");
1227	if (RT_SUCCESS(rc))
1228	return RTDirExists(szPath);
1229	}
1230	else
1231	{
1232	const char *apszArgs[] = { g_szSvnPath, "propget", "svn:no-such-property", pszDir, NULL };
1233	char *pszValue;
1234	int rc = scmSvnRunAndGetOutput(NULL, apszArgs, true, &pszValue);
1235	if (RT_SUCCESS(rc))
1236	{
1237	RTStrFree(pszValue);
1238	return true;
1239	}
1240	}
1241	return false;
1242	}
1243
1244
1245	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1246	/**
1247	* Checks if @a pszPath exists in the current WC.
1248	*
1249	* @returns IPRT status code - VERR_NOT_SUPPORT if fallback should be attempted.
1250	* @param pszPath Path to the object that should be investigated.
1251	* @param pszProperty The property name.
1252	* @param ppszValue Where to return the property value. Optional.
1253	*/
1254	static int scmSvnQueryPropertyUsingApi(const char pszPath, const char pszProperty, char **ppszValue)
1255	{
1256	/* svn_client_propget4 and later requires absolute target path. */
1257	char szAbsPath[RTPATH_MAX];
1258	int rc = scmSvnAbsPath(pszPath, szAbsPath, sizeof(szAbsPath));
1259	if (RT_SUCCESS(rc))
1260	{
1261	apr_pool_t *pPool;
1262	svn_client_ctx_t *pCtx = NULL;
1263	rc = scmSvnGetClientContextAndPool(&pCtx, &pPool);
1264	if (RT_SUCCESS(rc))
1265	{
1266	/* Make the call. */
1267	apr_hash_t *pHash = NULL;
1268	svn_opt_revision_t Rev;
1269	RT_ZERO(Rev);
1270	Rev.kind = svn_opt_revision_working;
1271	Rev.value.number = -1L;
1272	svn_error_t *pErr = g_pfnSvnClientPropGet4(&pHash, pszProperty, szAbsPath, &Rev, &Rev,
1273	NULL /pActualRev/, svn_depth_empty, NULL /pChangeList/,
1274	pCtx, pPool, pPool);
1275	if (!pErr)
1276	{
1277	/* Get the first value, if any. */
1278	rc = VERR_NOT_FOUND;
1279	apr_hash_index_t *pHashIdx = g_pfnAprHashFirst(pPool, pHash);
1280	if (pHashIdx)
1281	{
1282	const char ppszFirst = (const char )g_pfnAprHashThisVal(pHashIdx);
1283	if (ppszFirst && *ppszFirst)
1284	{
1285	if (ppszValue)
1286	rc = RTStrDupEx(ppszValue, *ppszFirst);
1287	else
1288	rc = VINF_SUCCESS;
1289	}
1290	}
1291	}
1292	else if (pErr->apr_err == SVN_ERR_UNVERSIONED_RESOURCE)
1293	rc = VERR_INVALID_STATE;
1294	else
1295	rc = VERR_GENERAL_FAILURE;
1296
1297	scmSvnPutClientContextAndPool(pCtx, pPool, false);
1298	}
1299	}
1300	return rc;
1301	}
1302	#endif /* SCM_WITH_DYNAMIC_LIB_SVN */
1303
1304
1305	/**
1306	* Queries the value of an SVN property.
1307	*
1308	* This will automatically adjust for scheduled changes.
1309	*
1310	* @returns IPRT status code.
1311	* @retval VERR_INVALID_STATE if not a SVN WC file.
1312	* @retval VERR_NOT_FOUND if the property wasn't found.
1313	* @param pState The rewrite state to work on.
1314	* @param pszName The property name.
1315	* @param ppszValue Where to return the property value. Free this
1316	* using RTStrFree. Optional.
1317	*/
1318	int ScmSvnQueryProperty(PSCMRWSTATE pState, const char pszName, char *ppszValue)
1319	{
1320	int rc;
1321
1322	/*
1323	* Look it up in the scheduled changes.
1324	*/
1325	size_t i = pState->cSvnPropChanges;
1326	while (i-- > 0)
1327	if (!strcmp(pState->paSvnPropChanges[i].pszName, pszName))
1328	{
1329	const char *pszValue = pState->paSvnPropChanges[i].pszValue;
1330	if (!pszValue)
1331	return VERR_NOT_FOUND;
1332	if (ppszValue)
1333	return RTStrDupEx(ppszValue, pszValue);
1334	return VINF_SUCCESS;
1335	}
1336
1337	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1338	if (g_fSvnFunctionPointersValid)
1339	{
1340	rc = scmSvnQueryPropertyUsingApi(pState->pszFilename, pszName, ppszValue);
1341	if (rc != VERR_NOT_SUPPORTED)
1342	return rc;
1343	/* Fallback: */
1344	}
1345	#endif
1346
1347	if (g_enmSvnVersion < kScmSvnVersion_1_7)
1348	{
1349	/*
1350	* Hack: Read the .svn/props/<file>.svn-work file exists.
1351	*/
1352	char szPath[RTPATH_MAX];
1353	rc = scmSvnConstructName(pState, ".svn/props/", ".svn-work", szPath);
1354	if (RT_SUCCESS(rc) && !RTFileExists(szPath))
1355	rc = scmSvnConstructName(pState, ".svn/prop-base/", ".svn-base", szPath);
1356	if (RT_SUCCESS(rc))
1357	{
1358	SCMSTREAM Stream;
1359	rc = ScmStreamInitForReading(&Stream, szPath);
1360	if (RT_SUCCESS(rc))
1361	{
1362	/*
1363	* The current format is K len\n<name>\nV len\n<value>\n" ... END.
1364	*/
1365	rc = VERR_NOT_FOUND;
1366	size_t const cchName = strlen(pszName);
1367	SCMEOL enmEol;
1368	size_t cchLine;
1369	const char *pchLine;
1370	while ((pchLine = ScmStreamGetLine(&Stream, &cchLine, &enmEol)) != NULL)
1371	{
1372	/*
1373	* Parse the 'K num' / 'END' line.
1374	*/
1375	if ( cchLine == 3
1376	&& !memcmp(pchLine, "END", 3))
1377	break;
1378	size_t cchKey;
1379	if ( cchLine < 3
1380	\|\| pchLine[0] != 'K'
1381	\|\| pchLine[1] != ' '
1382	\|\| !scmSvnReadNumber(&pchLine[2], cchLine - 2, &cchKey)
1383	\|\| cchKey == 0
1384	\|\| cchKey > 4096)
1385	{
1386	RTMsgError("%s:%u: Unexpected data '%.*s'\n", szPath, ScmStreamTellLine(&Stream), cchLine, pchLine);
1387	rc = VERR_PARSE_ERROR;
1388	break;
1389	}
1390
1391	/*
1392	* Match the key and skip to the value line. Don't bother with
1393	* names containing EOL markers.
1394	*/
1395	size_t const offKey = ScmStreamTell(&Stream);
1396	bool fMatch = cchName == cchKey;
1397	if (fMatch)
1398	{
1399	pchLine = ScmStreamGetLine(&Stream, &cchLine, &enmEol);
1400	if (!pchLine)
1401	break;
1402	fMatch = cchLine == cchName
1403	&& !memcmp(pchLine, pszName, cchName);
1404	}
1405
1406	if (RT_FAILURE(ScmStreamSeekAbsolute(&Stream, offKey + cchKey)))
1407	break;
1408	if (RT_FAILURE(ScmStreamSeekByLine(&Stream, ScmStreamTellLine(&Stream) + 1)))
1409	break;
1410
1411	/*
1412	* Read and Parse the 'V num' line.
1413	*/
1414	pchLine = ScmStreamGetLine(&Stream, &cchLine, &enmEol);
1415	if (!pchLine)
1416	break;
1417	size_t cchValue;
1418	if ( cchLine < 3
1419	\|\| pchLine[0] != 'V'
1420	\|\| pchLine[1] != ' '
1421	\|\| !scmSvnReadNumber(&pchLine[2], cchLine - 2, &cchValue)
1422	\|\| cchValue > _1M)
1423	{
1424	RTMsgError("%s:%u: Unexpected data '%.*s'\n", szPath, ScmStreamTellLine(&Stream), cchLine, pchLine);
1425	rc = VERR_PARSE_ERROR;
1426	break;
1427	}
1428
1429	/*
1430	* If we have a match, allocate a return buffer and read the
1431	* value into it. Otherwise skip this value and continue
1432	* searching.
1433	*/
1434	if (fMatch)
1435	{
1436	if (!ppszValue)
1437	rc = VINF_SUCCESS;
1438	else
1439	{
1440	char *pszValue;
1441	rc = RTStrAllocEx(&pszValue, cchValue + 1);
1442	if (RT_SUCCESS(rc))
1443	{
1444	rc = ScmStreamRead(&Stream, pszValue, cchValue);
1445	if (RT_SUCCESS(rc))
1446	*ppszValue = pszValue;
1447	else
1448	RTStrFree(pszValue);
1449	}
1450	}
1451	break;
1452	}
1453
1454	if (RT_FAILURE(ScmStreamSeekRelative(&Stream, cchValue)))
1455	break;
1456	if (RT_FAILURE(ScmStreamSeekByLine(&Stream, ScmStreamTellLine(&Stream) + 1)))
1457	break;
1458	}
1459
1460	if (RT_FAILURE(ScmStreamGetStatus(&Stream)))
1461	{
1462	rc = ScmStreamGetStatus(&Stream);
1463	RTMsgError("%s: stream error %Rrc\n", szPath, rc);
1464	}
1465	ScmStreamDelete(&Stream);
1466	}
1467	}
1468
1469	if (rc == VERR_FILE_NOT_FOUND)
1470	rc = VERR_NOT_FOUND;
1471	}
1472	else
1473	{
1474	const char *apszArgs[] = { g_szSvnPath, "propget", "--strict", pszName, pState->pszFilename, NULL };
1475	char *pszValue;
1476	rc = scmSvnRunAndGetOutput(pState, apszArgs, false, &pszValue);
1477	if (RT_SUCCESS(rc))
1478	{
1479	if (pszValue && *pszValue)
1480	{
1481	if (ppszValue)
1482	{
1483	*ppszValue = pszValue;
1484	pszValue = NULL;
1485	}
1486	}
1487	else
1488	rc = VERR_NOT_FOUND;
1489	RTStrFree(pszValue);
1490	}
1491	}
1492	return rc;
1493	}
1494
1495
1496	/**
1497	* Queries the value of an SVN property on the parent dir/whatever.
1498	*
1499	* This will not adjust for scheduled changes to the parent!
1500	*
1501	* @returns IPRT status code.
1502	* @retval VERR_INVALID_STATE if not a SVN WC file.
1503	* @retval VERR_NOT_FOUND if the property wasn't found.
1504	* @param pState The rewrite state to work on.
1505	* @param pszName The property name.
1506	* @param ppszValue Where to return the property value. Free this
1507	* using RTStrFree. Optional.
1508	*/
1509	int ScmSvnQueryParentProperty(PSCMRWSTATE pState, const char pszName, char *ppszValue)
1510	{
1511	/*
1512	* Strip the filename and use ScmSvnQueryProperty.
1513	*/
1514	char szPath[RTPATH_MAX];
1515	int rc = RTStrCopy(szPath, sizeof(szPath), pState->pszFilename);
1516	if (RT_SUCCESS(rc))
1517	{
1518	RTPathStripFilename(szPath);
1519	SCMRWSTATE ParentState;
1520	ParentState.pszFilename = szPath;
1521	ParentState.fFirst = false;
1522	ParentState.fNeedsManualRepair = false;
1523	ParentState.fIsInSvnWorkingCopy = true;
1524	ParentState.cSvnPropChanges = 0;
1525	ParentState.paSvnPropChanges = NULL;
1526	ParentState.rc = VINF_SUCCESS;
1527	rc = ScmSvnQueryProperty(&ParentState, pszName, ppszValue);
1528	if (RT_SUCCESS(rc))
1529	rc = ParentState.rc;
1530	}
1531	return rc;
1532	}
1533
1534
1535	/**
1536	* Schedules the setting of a property.
1537	*
1538	* @returns IPRT status code.
1539	* @retval VERR_INVALID_STATE if not a SVN WC file.
1540	* @param pState The rewrite state to work on.
1541	* @param pszName The name of the property to set.
1542	* @param pszValue The value. NULL means deleting it.
1543	*/
1544	int ScmSvnSetProperty(PSCMRWSTATE pState, const char pszName, const char pszValue)
1545	{
1546	/*
1547	* Update any existing entry first.
1548	*/
1549	size_t i = pState->cSvnPropChanges;
1550	while (i-- > 0)
1551	if (!strcmp(pState->paSvnPropChanges[i].pszName, pszName))
1552	{
1553	if (!pszValue)
1554	{
1555	RTStrFree(pState->paSvnPropChanges[i].pszValue);
1556	pState->paSvnPropChanges[i].pszValue = NULL;
1557	}
1558	else
1559	{
1560	char *pszCopy;
1561	int rc = RTStrDupEx(&pszCopy, pszValue);
1562	if (RT_FAILURE(rc))
1563	return rc;
1564	pState->paSvnPropChanges[i].pszValue = pszCopy;
1565	}
1566	return VINF_SUCCESS;
1567	}
1568
1569	/*
1570	* Insert a new entry.
1571	*/
1572	i = pState->cSvnPropChanges;
1573	if ((i % 32) == 0)
1574	{
1575	void pvNew = RTMemRealloc(pState->paSvnPropChanges, (i + 32) sizeof(SCMSVNPROP));
1576	if (!pvNew)
1577	return VERR_NO_MEMORY;
1578	pState->paSvnPropChanges = (PSCMSVNPROP)pvNew;
1579	}
1580
1581	pState->paSvnPropChanges[i].pszName = RTStrDup(pszName);
1582	pState->paSvnPropChanges[i].pszValue = pszValue ? RTStrDup(pszValue) : NULL;
1583	if ( pState->paSvnPropChanges[i].pszName
1584	&& (pState->paSvnPropChanges[i].pszValue \|\| !pszValue) )
1585	pState->cSvnPropChanges = i + 1;
1586	else
1587	{
1588	RTStrFree(pState->paSvnPropChanges[i].pszName);
1589	pState->paSvnPropChanges[i].pszName = NULL;
1590	RTStrFree(pState->paSvnPropChanges[i].pszValue);
1591	pState->paSvnPropChanges[i].pszValue = NULL;
1592	return VERR_NO_MEMORY;
1593	}
1594	return VINF_SUCCESS;
1595	}
1596
1597
1598	/**
1599	* Schedules a property deletion.
1600	*
1601	* @returns IPRT status code.
1602	* @param pState The rewrite state to work on.
1603	* @param pszName The name of the property to delete.
1604	*/
1605	int ScmSvnDelProperty(PSCMRWSTATE pState, const char *pszName)
1606	{
1607	return ScmSvnSetProperty(pState, pszName, NULL);
1608	}
1609
1610
1611	/**
1612	* Applies any SVN property changes to the work copy of the file.
1613	*
1614	* @returns IPRT status code.
1615	* @param pState The rewrite state which SVN property changes
1616	* should be applied.
1617	*/
1618	int ScmSvnDisplayChanges(PSCMRWSTATE pState)
1619	{
1620	size_t i = pState->cSvnPropChanges;
1621	while (i-- > 0)
1622	{
1623	const char *pszName = pState->paSvnPropChanges[i].pszName;
1624	const char *pszValue = pState->paSvnPropChanges[i].pszValue;
1625	if (pszValue)
1626	ScmVerbose(pState, 0, "svn propset '%s' '%s' %s\n", pszName, pszValue, pState->pszFilename);
1627	else
1628	ScmVerbose(pState, 0, "svn propdel '%s' %s\n", pszName, pState->pszFilename);
1629	}
1630
1631	return VINF_SUCCESS;
1632	}
1633
1634	/**
1635	* Applies any SVN property changes to the work copy of the file.
1636	*
1637	* @returns IPRT status code.
1638	* @param pState The rewrite state which SVN property changes
1639	* should be applied.
1640	*/
1641	int ScmSvnApplyChanges(PSCMRWSTATE pState)
1642	{
1643	#ifdef SCM_WITH_LATER
1644	if (0)
1645	{
1646	return ...;
1647	}
1648
1649	/* Fallback: */
1650	#endif
1651
1652	/*
1653	* Iterate thru the changes and apply them by starting the svn client.
1654	*/
1655	for (size_t i = 0; i < pState->cSvnPropChanges; i++)
1656	{
1657	const char *apszArgv[6];
1658	apszArgv[0] = g_szSvnPath;
1659	apszArgv[1] = pState->paSvnPropChanges[i].pszValue ? "propset" : "propdel";
1660	apszArgv[2] = pState->paSvnPropChanges[i].pszName;
1661	int iArg = 3;
1662	if (pState->paSvnPropChanges[i].pszValue)
1663	apszArgv[iArg++] = pState->paSvnPropChanges[i].pszValue;
1664	apszArgv[iArg++] = pState->pszFilename;
1665	apszArgv[iArg++] = NULL;
1666
1667	int rc = scmSvnRun(pState, apszArgv, false);
1668	if (RT_FAILURE(rc))
1669	return rc;
1670	}
1671
1672	return VINF_SUCCESS;
1673	}
1674
1675
1676	/**
1677	* Initializes the subversion interface.
1678	*/
1679	void ScmSvnInit(void)
1680	{
1681	scmSvnFindSvnBinary(NULL);
1682	}
1683
1684
1685	void ScmSvnTerm(void)
1686	{
1687	#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1688	scmSvnFlushClientContextAndPool();
1689	#endif
1690	}

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source: vbox/trunk/src/bldprogs/scmsubversion.cpp

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