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source: vbox/trunk/src/bldprogs/scmsubversion.cpp@ 70772

Last change on this file since 70772 was 69515, checked in by vboxsync, 7 years ago

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1/* $Id: scmsubversion.cpp 69515 2017-10-29 18:12:20Z vboxsync $ */
2/** @file
3 * IPRT Testcase / Tool - Source Code Massager, Subversion Access.
4 */
5
6/*
7 * Copyright (C) 2010-2017 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.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
18#define SCM_WITH_DYNAMIC_LIB_SVN
19
20
21/*********************************************************************************************************************************
22* Header Files *
23*********************************************************************************************************************************/
24#include <iprt/assert.h>
25#include <iprt/ctype.h>
26#include <iprt/dir.h>
27#include <iprt/env.h>
28#include <iprt/err.h>
29#include <iprt/file.h>
30#include <iprt/getopt.h>
31#include <iprt/handle.h>
32#include <iprt/initterm.h>
33#include <iprt/ldr.h>
34#include <iprt/mem.h>
35#include <iprt/message.h>
36#include <iprt/param.h>
37#include <iprt/path.h>
38#include <iprt/pipe.h>
39#include <iprt/poll.h>
40#include <iprt/process.h>
41#include <iprt/stream.h>
42#include <iprt/string.h>
43
44#include "scm.h"
45
46#if defined(SCM_WITH_DYNAMIC_LIB_SVN) && defined(SCM_WITH_SVN_HEADERS)
47# include <svn_client.h>
48#endif
49
50
51/*********************************************************************************************************************************
52* Defined Constants And Macros *
53*********************************************************************************************************************************/
54#ifdef SCM_WITH_DYNAMIC_LIB_SVN
55# if defined(RT_OS_WINDOWS) && defined(RT_ARCH_X86)
56# define APR_CALL __stdcall
57# define SVN_CALL /* __stdcall ?? */
58# else
59# define APR_CALL
60# define SVN_CALL
61# endif
62#endif
63#if defined(SCM_WITH_DYNAMIC_LIB_SVN) && !defined(SCM_WITH_SVN_HEADERS)
64# define SVN_ERR_MISC_CATEGORY_START 200000
65# define SVN_ERR_UNVERSIONED_RESOURCE (SVN_ERR_MISC_CATEGORY_START + 5)
66#endif
67
68
69/*********************************************************************************************************************************
70* Structures and Typedefs *
71*********************************************************************************************************************************/
72#if defined(SCM_WITH_DYNAMIC_LIB_SVN) && !defined(SCM_WITH_SVN_HEADERS)
73typedef int apr_status_t;
74typedef int64_t apr_time_t;
75typedef struct apr_pool_t apr_pool_t;
76typedef struct apr_hash_t apr_hash_t;
77typedef struct apr_hash_index_t apr_hash_index_t;
78typedef struct apr_array_header_t apr_array_header_t;
79
80
81typedef struct svn_error_t
82{
83 apr_status_t apr_err;
84 const char *_dbgr_message;
85 struct svn_error_t *_dbgr_child;
86 apr_pool_t *_dbgr_pool;
87 const char *_dbgr_file;
88 long _dbgr_line;
89} svn_error_t;
90typedef int svn_boolean_t;
91typedef long int svn_revnum_t;
92typedef struct svn_client_ctx_t svn_client_ctx_t;
93typedef enum svn_opt_revision_kind
94{
95 svn_opt_revision_unspecified = 0,
96 svn_opt_revision_number,
97 svn_opt_revision_date,
98 svn_opt_revision_committed,
99 svn_opt_revision_previous,
100 svn_opt_revision_base,
101 svn_opt_revision_working,
102 svn_opt_revision_head
103} svn_opt_revision_kind;
104typedef union svn_opt_revision_value_t
105{
106 svn_revnum_t number;
107 apr_time_t date;
108} svn_opt_revision_value_t;
109typedef struct svn_opt_revision_t
110{
111 svn_opt_revision_kind kind;
112 svn_opt_revision_value_t value;
113} svn_opt_revision_t;
114typedef enum svn_depth_t
115{
116 svn_depth_unknown = -2,
117 svn_depth_exclude,
118 svn_depth_empty,
119 svn_depth_files,
120 svn_depth_immediates,
121 svn_depth_infinity
122} svn_depth_t;
123
124#endif /* SCM_WITH_DYNAMIC_LIB_SVN && !SCM_WITH_SVN_HEADERS */
125
126
127/*********************************************************************************************************************************
128* Global Variables *
129*********************************************************************************************************************************/
130static char g_szSvnPath[RTPATH_MAX];
131static enum
132{
133 kScmSvnVersion_Ancient = 1,
134 kScmSvnVersion_1_6,
135 kScmSvnVersion_1_7,
136 kScmSvnVersion_1_8,
137 kScmSvnVersion_End
138} g_enmSvnVersion = kScmSvnVersion_Ancient;
139
140
141#ifdef SCM_WITH_DYNAMIC_LIB_SVN
142/** Set if all the function pointers are valid. */
143static bool g_fSvnFunctionPointersValid;
144/** @name SVN and APR imports.
145 * @{ */
146static apr_status_t (APR_CALL *g_pfnAprInitialize)(void);
147static apr_hash_index_t * (APR_CALL *g_pfnAprHashFirst)(apr_pool_t *pPool, apr_hash_t *pHashTab);
148static apr_hash_index_t * (APR_CALL *g_pfnAprHashNext)(apr_hash_index_t *pCurIdx);
149static void * (APR_CALL *g_pfnAprHashThisVal)(apr_hash_index_t *pHashIdx);
150static apr_pool_t * (SVN_CALL *g_pfnSvnPoolCreateEx)(apr_pool_t *pParent, void *pvAllocator);
151static void (APR_CALL *g_pfnAprPoolClear)(apr_pool_t *pPool);
152static void (APR_CALL *g_pfnAprPoolDestroy)(apr_pool_t *pPool);
153
154static svn_error_t * (SVN_CALL *g_pfnSvnClientCreateContext)(svn_client_ctx_t **ppCtx, apr_pool_t *pPool);
155static svn_error_t * (SVN_CALL *g_pfnSvnClientPropGet4)(apr_hash_t **ppHashProps, const char *pszPropName,
156 const char *pszTarget, const svn_opt_revision_t *pPeggedRev,
157 const svn_opt_revision_t *pRevision, svn_revnum_t *pActualRev,
158 svn_depth_t enmDepth, const apr_array_header_t *pChangeList,
159 svn_client_ctx_t *pCtx, apr_pool_t *pResultPool,
160 apr_pool_t *pScratchPool);
161/**@} */
162
163/** Cached APR pool. */
164static apr_pool_t *g_pSvnPool = NULL;
165/** Cached SVN client context. */
166static svn_client_ctx_t *g_pSvnClientCtx = NULL;
167/** Number of times the current context has been used. */
168static uint32_t g_cSvnClientCtxUsed = 0;
169
170#endif
171
172
173/*********************************************************************************************************************************
174* Internal Functions *
175*********************************************************************************************************************************/
176#ifdef SCM_WITH_DYNAMIC_LIB_SVN
177static void scmSvnFlushClientContextAndPool(void);
178#endif
179
180
181
182/**
183 * Callback that is call for each path to search.
184 */
185static DECLCALLBACK(int) scmSvnFindSvnBinaryCallback(char const *pchPath, size_t cchPath, void *pvUser1, void *pvUser2)
186{
187 char *pszDst = (char *)pvUser1;
188 size_t cchDst = (size_t)pvUser2;
189 if (cchDst > cchPath)
190 {
191 memcpy(pszDst, pchPath, cchPath);
192 pszDst[cchPath] = '\0';
193#if defined(RT_OS_WINDOWS) || defined(RT_OS_OS2)
194 int rc = RTPathAppend(pszDst, cchDst, "svn.exe");
195#else
196 int rc = RTPathAppend(pszDst, cchDst, "svn");
197#endif
198 if ( RT_SUCCESS(rc)
199 && RTFileExists(pszDst))
200 return VINF_SUCCESS;
201 }
202 return VERR_TRY_AGAIN;
203}
204
205
206/**
207 * Reads from a pipe.
208 *
209 * @returns @a rc or other status code.
210 * @param rc The current status of the operation. Error status
211 * are preserved and returned.
212 * @param phPipeR Pointer to the pipe handle.
213 * @param pcbAllocated Pointer to the buffer size variable.
214 * @param poffCur Pointer to the buffer offset variable.
215 * @param ppszBuffer Pointer to the buffer pointer variable.
216 */
217static int rtProcProcessOutput(int rc, PRTPIPE phPipeR, size_t *pcbAllocated, size_t *poffCur, char **ppszBuffer,
218 RTPOLLSET hPollSet, uint32_t idPollSet)
219{
220 size_t cbRead;
221 char szTmp[_4K - 1];
222 for (;;)
223 {
224 int rc2 = RTPipeRead(*phPipeR, szTmp, sizeof(szTmp), &cbRead);
225 if (RT_SUCCESS(rc2) && cbRead)
226 {
227 /* Resize the buffer. */
228 if (*poffCur + cbRead >= *pcbAllocated)
229 {
230 if (*pcbAllocated >= _1G)
231 {
232 RTPollSetRemove(hPollSet, idPollSet);
233 rc2 = RTPipeClose(*phPipeR); AssertRC(rc2);
234 *phPipeR = NIL_RTPIPE;
235 return RT_SUCCESS(rc) ? VERR_TOO_MUCH_DATA : rc;
236 }
237
238 size_t cbNew = *pcbAllocated ? *pcbAllocated * 2 : sizeof(szTmp) + 1;
239 Assert(*poffCur + cbRead < cbNew);
240 rc2 = RTStrRealloc(ppszBuffer, cbNew);
241 if (RT_FAILURE(rc2))
242 {
243 RTPollSetRemove(hPollSet, idPollSet);
244 rc2 = RTPipeClose(*phPipeR); AssertRC(rc2);
245 *phPipeR = NIL_RTPIPE;
246 return RT_SUCCESS(rc) ? rc2 : rc;
247 }
248 *pcbAllocated = cbNew;
249 }
250
251 /* Append the new data, terminating it. */
252 memcpy(*ppszBuffer + *poffCur, szTmp, cbRead);
253 *poffCur += cbRead;
254 (*ppszBuffer)[*poffCur] = '\0';
255
256 /* Check for null terminators in the string. */
257 if (RT_SUCCESS(rc) && memchr(szTmp, '\0', cbRead))
258 rc = VERR_NO_TRANSLATION;
259
260 /* If we read a full buffer, try read some more. */
261 if (RT_SUCCESS(rc) && cbRead == sizeof(szTmp))
262 continue;
263 }
264 else if (rc2 != VINF_TRY_AGAIN)
265 {
266 if (RT_FAILURE(rc) && rc2 != VERR_BROKEN_PIPE)
267 rc = rc2;
268 RTPollSetRemove(hPollSet, idPollSet);
269 rc2 = RTPipeClose(*phPipeR); AssertRC(rc2);
270 *phPipeR = NIL_RTPIPE;
271 }
272 return rc;
273 }
274}
275
276/** @name RTPROCEXEC_FLAGS_XXX - flags for RTProcExec and RTProcExecToString.
277 * @{ */
278/** Redirect /dev/null to standard input. */
279#define RTPROCEXEC_FLAGS_STDIN_NULL RT_BIT_32(0)
280/** Redirect standard output to /dev/null. */
281#define RTPROCEXEC_FLAGS_STDOUT_NULL RT_BIT_32(1)
282/** Redirect standard error to /dev/null. */
283#define RTPROCEXEC_FLAGS_STDERR_NULL RT_BIT_32(2)
284/** Redirect all standard output to /dev/null as well as directing /dev/null
285 * to standard input. */
286#define RTPROCEXEC_FLAGS_STD_NULL ( RTPROCEXEC_FLAGS_STDIN_NULL \
287 | RTPROCEXEC_FLAGS_STDOUT_NULL \
288 | RTPROCEXEC_FLAGS_STDERR_NULL)
289/** Mask containing the valid flags. */
290#define RTPROCEXEC_FLAGS_VALID_MASK UINT32_C(0x00000007)
291/** @} */
292
293/**
294 * Runs a process, collecting the standard output and/or standard error.
295 *
296 *
297 * @returns IPRT status code
298 * @retval VERR_NO_TRANSLATION if the output of the program isn't valid UTF-8
299 * or contains a nul character.
300 * @retval VERR_TOO_MUCH_DATA if the process produced too much data.
301 *
302 * @param pszExec Executable image to use to create the child process.
303 * @param papszArgs Pointer to an array of arguments to the child. The
304 * array terminated by an entry containing NULL.
305 * @param hEnv Handle to the environment block for the child.
306 * @param fFlags A combination of RTPROCEXEC_FLAGS_XXX. The @a
307 * ppszStdOut and @a ppszStdErr parameters takes precedence
308 * over redirection flags.
309 * @param pStatus Where to return the status on success.
310 * @param ppszStdOut Where to return the text written to standard output. If
311 * NULL then standard output will not be collected and go
312 * to the standard output handle of the process.
313 * Free with RTStrFree, regardless of return status.
314 * @param ppszStdErr Where to return the text written to standard error. If
315 * NULL then standard output will not be collected and go
316 * to the standard error handle of the process.
317 * Free with RTStrFree, regardless of return status.
318 */
319int RTProcExecToString(const char *pszExec, const char * const *papszArgs, RTENV hEnv, uint32_t fFlags,
320 PRTPROCSTATUS pStatus, char **ppszStdOut, char **ppszStdErr)
321{
322 int rc2;
323
324 /*
325 * Clear output arguments (no returning failure here, simply crash!).
326 */
327 AssertPtr(pStatus);
328 pStatus->enmReason = RTPROCEXITREASON_ABEND;
329 pStatus->iStatus = RTEXITCODE_FAILURE;
330 AssertPtrNull(ppszStdOut);
331 if (ppszStdOut)
332 *ppszStdOut = NULL;
333 AssertPtrNull(ppszStdOut);
334 if (ppszStdErr)
335 *ppszStdErr = NULL;
336
337 /*
338 * Check input arguments.
339 */
340 AssertReturn(!(fFlags & ~RTPROCEXEC_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
341
342 /*
343 * Do we need a standard input bitbucket?
344 */
345 int rc = VINF_SUCCESS;
346 PRTHANDLE phChildStdIn = NULL;
347 RTHANDLE hChildStdIn;
348 hChildStdIn.enmType = RTHANDLETYPE_FILE;
349 hChildStdIn.u.hFile = NIL_RTFILE;
350 if ((fFlags & RTPROCEXEC_FLAGS_STDIN_NULL) && RT_SUCCESS(rc))
351 {
352 phChildStdIn = &hChildStdIn;
353 rc = RTFileOpenBitBucket(&hChildStdIn.u.hFile, RTFILE_O_READ);
354 }
355
356 /*
357 * Create the output pipes / bitbuckets.
358 */
359 RTPIPE hPipeStdOutR = NIL_RTPIPE;
360 PRTHANDLE phChildStdOut = NULL;
361 RTHANDLE hChildStdOut;
362 hChildStdOut.enmType = RTHANDLETYPE_PIPE;
363 hChildStdOut.u.hPipe = NIL_RTPIPE;
364 if (ppszStdOut && RT_SUCCESS(rc))
365 {
366 phChildStdOut = &hChildStdOut;
367 rc = RTPipeCreate(&hPipeStdOutR, &hChildStdOut.u.hPipe, 0 /*fFlags*/);
368 }
369 else if ((fFlags & RTPROCEXEC_FLAGS_STDOUT_NULL) && RT_SUCCESS(rc))
370 {
371 phChildStdOut = &hChildStdOut;
372 hChildStdOut.enmType = RTHANDLETYPE_FILE;
373 hChildStdOut.u.hFile = NIL_RTFILE;
374 rc = RTFileOpenBitBucket(&hChildStdOut.u.hFile, RTFILE_O_WRITE);
375 }
376
377 RTPIPE hPipeStdErrR = NIL_RTPIPE;
378 PRTHANDLE phChildStdErr = NULL;
379 RTHANDLE hChildStdErr;
380 hChildStdErr.enmType = RTHANDLETYPE_PIPE;
381 hChildStdErr.u.hPipe = NIL_RTPIPE;
382 if (ppszStdErr && RT_SUCCESS(rc))
383 {
384 phChildStdErr = &hChildStdErr;
385 rc = RTPipeCreate(&hPipeStdErrR, &hChildStdErr.u.hPipe, 0 /*fFlags*/);
386 }
387 else if ((fFlags & RTPROCEXEC_FLAGS_STDERR_NULL) && RT_SUCCESS(rc))
388 {
389 phChildStdErr = &hChildStdErr;
390 hChildStdErr.enmType = RTHANDLETYPE_FILE;
391 hChildStdErr.u.hFile = NIL_RTFILE;
392 rc = RTFileOpenBitBucket(&hChildStdErr.u.hFile, RTFILE_O_WRITE);
393 }
394
395 if (RT_SUCCESS(rc))
396 {
397 RTPOLLSET hPollSet;
398 rc = RTPollSetCreate(&hPollSet);
399 if (RT_SUCCESS(rc))
400 {
401 if (hPipeStdOutR != NIL_RTPIPE && RT_SUCCESS(rc))
402 rc = RTPollSetAddPipe(hPollSet, hPipeStdOutR, RTPOLL_EVT_READ | RTPOLL_EVT_ERROR, 1);
403 if (hPipeStdErrR != NIL_RTPIPE)
404 rc = RTPollSetAddPipe(hPollSet, hPipeStdErrR, RTPOLL_EVT_READ | RTPOLL_EVT_ERROR, 2);
405 }
406 if (RT_SUCCESS(rc))
407 {
408 /*
409 * Create the process.
410 */
411 RTPROCESS hProc;
412 rc = RTProcCreateEx(pszExec,
413 papszArgs,
414 hEnv,
415 0 /*fFlags*/,
416 NULL /*phStdIn*/,
417 phChildStdOut,
418 phChildStdErr,
419 NULL /*pszAsUser*/,
420 NULL /*pszPassword*/,
421 &hProc);
422 rc2 = RTHandleClose(&hChildStdErr); AssertRC(rc2);
423 rc2 = RTHandleClose(&hChildStdOut); AssertRC(rc2);
424
425 if (RT_SUCCESS(rc))
426 {
427 /*
428 * Process output and wait for the process to finish.
429 */
430 size_t cbStdOut = 0;
431 size_t offStdOut = 0;
432 size_t cbStdErr = 0;
433 size_t offStdErr = 0;
434 for (;;)
435 {
436 if (hPipeStdOutR != NIL_RTPIPE)
437 rc = rtProcProcessOutput(rc, &hPipeStdOutR, &cbStdOut, &offStdOut, ppszStdOut, hPollSet, 1);
438 if (hPipeStdErrR != NIL_RTPIPE)
439 rc = rtProcProcessOutput(rc, &hPipeStdErrR, &cbStdErr, &offStdErr, ppszStdErr, hPollSet, 2);
440 if (hPipeStdOutR == NIL_RTPIPE && hPipeStdErrR == NIL_RTPIPE)
441 break;
442
443 if (hProc != NIL_RTPROCESS)
444 {
445 rc2 = RTProcWait(hProc, RTPROCWAIT_FLAGS_NOBLOCK, pStatus);
446 if (rc2 != VERR_PROCESS_RUNNING)
447 {
448 if (RT_FAILURE(rc2))
449 rc = rc2;
450 hProc = NIL_RTPROCESS;
451 }
452 }
453
454 rc2 = RTPoll(hPollSet, 10000, NULL, NULL);
455 Assert(RT_SUCCESS(rc2) || rc2 == VERR_TIMEOUT);
456 }
457
458 if (RT_SUCCESS(rc))
459 {
460 if ( (ppszStdOut && *ppszStdOut && !RTStrIsValidEncoding(*ppszStdOut))
461 || (ppszStdErr && *ppszStdErr && !RTStrIsValidEncoding(*ppszStdErr)) )
462 rc = VERR_NO_TRANSLATION;
463 }
464
465 /*
466 * No more output, just wait for it to finish.
467 */
468 if (hProc != NIL_RTPROCESS)
469 {
470 rc2 = RTProcWait(hProc, RTPROCWAIT_FLAGS_BLOCK, pStatus);
471 if (RT_FAILURE(rc2))
472 rc = rc2;
473 }
474 }
475 RTPollSetDestroy(hPollSet);
476 }
477 }
478
479 rc2 = RTHandleClose(&hChildStdErr); AssertRC(rc2);
480 rc2 = RTHandleClose(&hChildStdOut); AssertRC(rc2);
481 rc2 = RTHandleClose(&hChildStdIn); AssertRC(rc2);
482 rc2 = RTPipeClose(hPipeStdErrR); AssertRC(rc2);
483 rc2 = RTPipeClose(hPipeStdOutR); AssertRC(rc2);
484 return rc;
485}
486
487
488/**
489 * Runs a process, waiting for it to complete.
490 *
491 * @returns IPRT status code
492 *
493 * @param pszExec Executable image to use to create the child process.
494 * @param papszArgs Pointer to an array of arguments to the child. The
495 * array terminated by an entry containing NULL.
496 * @param hEnv Handle to the environment block for the child.
497 * @param fFlags A combination of RTPROCEXEC_FLAGS_XXX.
498 * @param pStatus Where to return the status on success.
499 */
500int RTProcExec(const char *pszExec, const char * const *papszArgs, RTENV hEnv, uint32_t fFlags,
501 PRTPROCSTATUS pStatus)
502{
503 int rc;
504
505 /*
506 * Clear output argument (no returning failure here, simply crash!).
507 */
508 AssertPtr(pStatus);
509 pStatus->enmReason = RTPROCEXITREASON_ABEND;
510 pStatus->iStatus = RTEXITCODE_FAILURE;
511
512 /*
513 * Check input arguments.
514 */
515 AssertReturn(!(fFlags & ~RTPROCEXEC_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
516
517 /*
518 * Set up /dev/null redirections.
519 */
520 PRTHANDLE aph[3] = { NULL, NULL, NULL };
521 RTHANDLE ah[3];
522 for (uint32_t i = 0; i < 3; i++)
523 {
524 ah[i].enmType = RTHANDLETYPE_FILE;
525 ah[i].u.hFile = NIL_RTFILE;
526 }
527 rc = VINF_SUCCESS;
528 if ((fFlags & RTPROCEXEC_FLAGS_STDIN_NULL) && RT_SUCCESS(rc))
529 {
530 aph[0] = &ah[0];
531 rc = RTFileOpenBitBucket(&ah[0].u.hFile, RTFILE_O_READ);
532 }
533 if ((fFlags & RTPROCEXEC_FLAGS_STDOUT_NULL) && RT_SUCCESS(rc))
534 {
535 aph[1] = &ah[1];
536 rc = RTFileOpenBitBucket(&ah[1].u.hFile, RTFILE_O_WRITE);
537 }
538 if ((fFlags & RTPROCEXEC_FLAGS_STDERR_NULL) && RT_SUCCESS(rc))
539 {
540 aph[2] = &ah[2];
541 rc = RTFileOpenBitBucket(&ah[2].u.hFile, RTFILE_O_WRITE);
542 }
543
544 /*
545 * Create the process.
546 */
547 RTPROCESS hProc = NIL_RTPROCESS;
548 if (RT_SUCCESS(rc))
549 rc = RTProcCreateEx(pszExec,
550 papszArgs,
551 hEnv,
552 0 /*fFlags*/,
553 aph[0],
554 aph[1],
555 aph[2],
556 NULL /*pszAsUser*/,
557 NULL /*pszPassword*/,
558 &hProc);
559
560 for (uint32_t i = 0; i < 3; i++)
561 RTFileClose(ah[i].u.hFile);
562
563 if (RT_SUCCESS(rc))
564 rc = RTProcWait(hProc, RTPROCWAIT_FLAGS_BLOCK, pStatus);
565 return rc;
566}
567
568
569
570/**
571 * Executes SVN and gets the output.
572 *
573 * Standard error is suppressed.
574 *
575 * @returns VINF_SUCCESS if the command executed successfully.
576 * @param pState The rewrite state to work on. Can be NULL.
577 * @param papszArgs The SVN argument.
578 * @param fNormalFailureOk Whether normal failure is ok.
579 * @param ppszStdOut Where to return the output on success.
580 */
581static int scmSvnRunAndGetOutput(PSCMRWSTATE pState, const char **papszArgs, bool fNormalFailureOk, char **ppszStdOut)
582{
583 *ppszStdOut = NULL;
584
585#ifdef SCM_WITH_DYNAMIC_LIB_SVN
586 scmSvnFlushClientContextAndPool();
587#endif
588
589 char *pszCmdLine = NULL;
590 int rc = RTGetOptArgvToString(&pszCmdLine, papszArgs, RTGETOPTARGV_CNV_QUOTE_BOURNE_SH);
591 if (RT_FAILURE(rc))
592 return rc;
593 ScmVerbose(pState, 2, "executing: %s\n", pszCmdLine);
594
595 RTPROCSTATUS Status;
596 rc = RTProcExecToString(g_szSvnPath, papszArgs, RTENV_DEFAULT,
597 RTPROCEXEC_FLAGS_STD_NULL, &Status, ppszStdOut, NULL);
598
599 if ( RT_SUCCESS(rc)
600 && ( Status.enmReason != RTPROCEXITREASON_NORMAL
601 || Status.iStatus != 0) )
602 {
603 if (fNormalFailureOk || Status.enmReason != RTPROCEXITREASON_NORMAL)
604 RTMsgError("%s: %s -> %s %u\n",
605 pState->pszFilename, pszCmdLine,
606 Status.enmReason == RTPROCEXITREASON_NORMAL ? "exit code"
607 : Status.enmReason == RTPROCEXITREASON_SIGNAL ? "signal"
608 : Status.enmReason == RTPROCEXITREASON_ABEND ? "abnormal end"
609 : "abducted by alien",
610 Status.iStatus);
611 rc = VERR_GENERAL_FAILURE;
612 }
613 else if (RT_FAILURE(rc))
614 {
615 if (pState)
616 RTMsgError("%s: executing: %s => %Rrc\n", pState->pszFilename, pszCmdLine, rc);
617 else
618 RTMsgError("executing: %s => %Rrc\n", pszCmdLine, rc);
619 }
620
621 if (RT_FAILURE(rc))
622 {
623 RTStrFree(*ppszStdOut);
624 *ppszStdOut = NULL;
625 }
626 RTStrFree(pszCmdLine);
627 return rc;
628}
629
630
631/**
632 * Executes SVN.
633 *
634 * Standard error and standard output is suppressed.
635 *
636 * @returns VINF_SUCCESS if the command executed successfully.
637 * @param pState The rewrite state to work on.
638 * @param papszArgs The SVN argument.
639 * @param fNormalFailureOk Whether normal failure is ok.
640 */
641static int scmSvnRun(PSCMRWSTATE pState, const char **papszArgs, bool fNormalFailureOk)
642{
643#ifdef SCM_WITH_DYNAMIC_LIB_SVN
644 scmSvnFlushClientContextAndPool();
645#endif
646
647 char *pszCmdLine = NULL;
648 int rc = RTGetOptArgvToString(&pszCmdLine, papszArgs, RTGETOPTARGV_CNV_QUOTE_BOURNE_SH);
649 if (RT_FAILURE(rc))
650 return rc;
651 ScmVerbose(pState, 2, "executing: %s\n", pszCmdLine);
652
653 /* Lazy bird uses RTProcExec. */
654 RTPROCSTATUS Status;
655 rc = RTProcExec(g_szSvnPath, papszArgs, RTENV_DEFAULT, RTPROCEXEC_FLAGS_STD_NULL, &Status);
656
657 if ( RT_SUCCESS(rc)
658 && ( Status.enmReason != RTPROCEXITREASON_NORMAL
659 || Status.iStatus != 0) )
660 {
661 if (fNormalFailureOk || Status.enmReason != RTPROCEXITREASON_NORMAL)
662 RTMsgError("%s: %s -> %s %u\n",
663 pState->pszFilename,
664 pszCmdLine,
665 Status.enmReason == RTPROCEXITREASON_NORMAL ? "exit code"
666 : Status.enmReason == RTPROCEXITREASON_SIGNAL ? "signal"
667 : Status.enmReason == RTPROCEXITREASON_ABEND ? "abnormal end"
668 : "abducted by alien",
669 Status.iStatus);
670 rc = VERR_GENERAL_FAILURE;
671 }
672 else if (RT_FAILURE(rc))
673 RTMsgError("%s: %s -> %Rrc\n", pState->pszFilename, pszCmdLine, rc);
674
675 RTStrFree(pszCmdLine);
676 return rc;
677}
678
679
680#ifdef SCM_WITH_DYNAMIC_LIB_SVN
681/**
682 * Attempts to resolve the necessary subversion and apache portable runtime APIs
683 * we require dynamically.
684 *
685 * Will set all global function pointers and g_fSvnFunctionPointersValid to true
686 * on success.
687 */
688static void scmSvnTryResolveFunctions(void)
689{
690 char szPath[RTPATH_MAX];
691 int rc = RTStrCopy(szPath, sizeof(szPath), g_szSvnPath);
692 if (RT_SUCCESS(rc))
693 {
694 RTPathStripFilename(szPath);
695 char *pszEndPath = strchr(szPath, '\0');
696# ifdef RT_OS_WINDOWS
697 RTPathChangeToDosSlashes(szPath, false);
698# endif
699
700 /*
701 * Try various prefixes/suffxies/locations.
702 */
703 static struct
704 {
705 const char *pszPrefix;
706 const char *pszSuffix;
707 } const s_aVariations[] =
708 {
709# ifdef RT_OS_WINDOWS
710 { "SlikSvn-lib", "-1.dll" }, /* SlikSVN */
711 { "lib", "-1.dll" }, /* Win32Svn,CollabNet,++ */
712# elif defined(RT_OS_DARWIN)
713 { "../lib/lib", "-1.dylib" },
714# else
715 { "../lib/lib", ".so" },
716 { "../lib/lib", "-1.so" },
717# ifdef RT_ARCH_X86
718 { "../lib/i386-linux-gnu/lib", ".so" },
719 { "../lib/i386-linux-gnu/lib", "-1.so" },
720# else
721 { "../lib/x86_64-linux-gnu/lib", ".so" },
722 { "../lib/x86_64-linux-gnu/lib", "-1.so" },
723# endif
724# endif
725 };
726 for (unsigned iVar = 0; iVar < RT_ELEMENTS(s_aVariations); iVar++)
727 {
728 /*
729 * Try load the svn_client library ...
730 */
731 static const char * const s_apszLibraries[] = { "svn_client", "svn_subr", "apr" };
732 RTLDRMOD ahMods[RT_ELEMENTS(s_apszLibraries)] = { NIL_RTLDRMOD, NIL_RTLDRMOD, NIL_RTLDRMOD };
733
734 rc = VINF_SUCCESS;
735 unsigned iLib;
736 for (iLib = 0; iLib < RT_ELEMENTS(s_apszLibraries) && RT_SUCCESS(rc); iLib++)
737 {
738 static const char * const s_apszSuffixes[] = { "", ".0", ".1" };
739 for (unsigned iSuff = 0; iSuff < RT_ELEMENTS(s_apszSuffixes); iSuff++)
740 {
741 *pszEndPath = '\0';
742 rc = RTPathAppend(szPath, sizeof(szPath), s_aVariations[iVar].pszPrefix);
743 if (RT_SUCCESS(rc))
744 rc = RTStrCat(szPath, sizeof(szPath), s_apszLibraries[iLib]);
745 if (RT_SUCCESS(rc))
746 rc = RTStrCat(szPath, sizeof(szPath), s_aVariations[iVar].pszSuffix);
747 if (RT_SUCCESS(rc))
748 rc = RTStrCat(szPath, sizeof(szPath), s_apszSuffixes[iSuff]);
749 if (RT_SUCCESS(rc))
750 {
751# ifdef RT_OS_WINDOWS
752 RTPathChangeToDosSlashes(pszEndPath, false);
753# endif
754 rc = RTLdrLoadEx(szPath, &ahMods[iLib], RTLDRLOAD_FLAGS_NT_SEARCH_DLL_LOAD_DIR , NULL);
755 if (RT_SUCCESS(rc))
756 break;
757 }
758 }
759 }
760 if (iLib == RT_ELEMENTS(s_apszLibraries) && RT_SUCCESS(rc))
761 {
762 static const struct
763 {
764 unsigned iLib;
765 const char *pszSymbol;
766 PFNRT *ppfn;
767 } s_aSymbols[] =
768 {
769 { 2, "apr_initialize", (PFNRT *)&g_pfnAprInitialize },
770 { 2, "apr_hash_first", (PFNRT *)&g_pfnAprHashFirst },
771 { 2, "apr_hash_next", (PFNRT *)&g_pfnAprHashNext },
772 { 2, "apr_hash_this_val", (PFNRT *)&g_pfnAprHashThisVal },
773 { 1, "svn_pool_create_ex", (PFNRT *)&g_pfnSvnPoolCreateEx },
774 { 2, "apr_pool_clear", (PFNRT *)&g_pfnAprPoolClear },
775 { 2, "apr_pool_destroy", (PFNRT *)&g_pfnAprPoolDestroy },
776 { 0, "svn_client_create_context", (PFNRT *)&g_pfnSvnClientCreateContext },
777 { 0, "svn_client_propget4", (PFNRT *)&g_pfnSvnClientPropGet4 },
778 };
779 for (unsigned i = 0; i < RT_ELEMENTS(s_aSymbols); i++)
780 {
781 rc = RTLdrGetSymbol(ahMods[s_aSymbols[i].iLib], s_aSymbols[i].pszSymbol,
782 (void **)(uintptr_t)s_aSymbols[i].ppfn);
783 if (RT_FAILURE(rc))
784 {
785 ScmVerbose(NULL, 0, "Failed to resolve '%s' in '%s'",
786 s_aSymbols[i].pszSymbol, s_apszLibraries[s_aSymbols[i].iLib]);
787 break;
788 }
789 }
790 if (RT_SUCCESS(rc))
791 {
792 apr_status_t rcApr = g_pfnAprInitialize();
793 if (rcApr == 0)
794 {
795 ScmVerbose(NULL, 1, "Found subversion APIs.\n");
796 g_fSvnFunctionPointersValid = true;
797 }
798 else
799 {
800 ScmVerbose(NULL, 0, "apr_initialize failed: %#x (%d)\n", rcApr, rcApr);
801 AssertMsgFailed(("%#x (%d)\n", rc, rc));
802 }
803 return;
804 }
805 }
806
807 while (iLib-- > 0)
808 RTLdrClose(ahMods[iLib]);
809 }
810 }
811}
812#endif /* SCM_WITH_DYNAMIC_LIB_SVN */
813
814
815/**
816 * Finds the svn binary, updating g_szSvnPath and g_enmSvnVersion.
817 */
818static void scmSvnFindSvnBinary(PSCMRWSTATE pState)
819{
820 /* Already been called? */
821 if (g_szSvnPath[0] != '\0')
822 return;
823
824 /*
825 * Locate it.
826 */
827 /** @todo code page fun... */
828#ifdef RT_OS_WINDOWS
829 const char *pszEnvVar = RTEnvGet("Path");
830#else
831 const char *pszEnvVar = RTEnvGet("PATH");
832#endif
833 if (pszEnvVar)
834 {
835#if defined(RT_OS_WINDOWS) || defined(RT_OS_OS2)
836 int rc = RTPathTraverseList(pszEnvVar, ';', scmSvnFindSvnBinaryCallback, g_szSvnPath, (void *)sizeof(g_szSvnPath));
837#else
838 int rc = RTPathTraverseList(pszEnvVar, ':', scmSvnFindSvnBinaryCallback, g_szSvnPath, (void *)sizeof(g_szSvnPath));
839#endif
840 if (RT_FAILURE(rc))
841 strcpy(g_szSvnPath, "svn");
842 }
843 else
844 strcpy(g_szSvnPath, "svn");
845
846 /*
847 * Check the version.
848 */
849 const char *apszArgs[] = { g_szSvnPath, "--version", "--quiet", NULL };
850 char *pszVersion;
851 int rc = scmSvnRunAndGetOutput(pState, apszArgs, false, &pszVersion);
852 if (RT_SUCCESS(rc))
853 {
854 char *pszStripped = RTStrStrip(pszVersion);
855 if (RTStrVersionCompare(pszStripped, "1.8") >= 0)
856 g_enmSvnVersion = kScmSvnVersion_1_8;
857 else if (RTStrVersionCompare(pszStripped, "1.7") >= 0)
858 g_enmSvnVersion = kScmSvnVersion_1_7;
859 else if (RTStrVersionCompare(pszStripped, "1.6") >= 0)
860 g_enmSvnVersion = kScmSvnVersion_1_6;
861 else
862 g_enmSvnVersion = kScmSvnVersion_Ancient;
863 RTStrFree(pszVersion);
864 }
865 else
866 g_enmSvnVersion = kScmSvnVersion_Ancient;
867
868#ifdef SCM_WITH_DYNAMIC_LIB_SVN
869 /*
870 * If we got version 1.8 or later, try see if we can locate a few of the
871 * simpler SVN APIs.
872 */
873 g_fSvnFunctionPointersValid = false;
874 if (g_enmSvnVersion >= kScmSvnVersion_1_8)
875 scmSvnTryResolveFunctions();
876#endif
877}
878
879
880/**
881 * Construct a dot svn filename for the file being rewritten.
882 *
883 * @returns IPRT status code.
884 * @param pState The rewrite state (for the name).
885 * @param pszDir The directory, including ".svn/".
886 * @param pszSuff The filename suffix.
887 * @param pszDst The output buffer. RTPATH_MAX in size.
888 */
889static int scmSvnConstructName(PSCMRWSTATE pState, const char *pszDir, const char *pszSuff, char *pszDst)
890{
891 strcpy(pszDst, pState->pszFilename); /* ASSUMES sizeof(szBuf) <= sizeof(szPath) */
892 RTPathStripFilename(pszDst);
893
894 int rc = RTPathAppend(pszDst, RTPATH_MAX, pszDir);
895 if (RT_SUCCESS(rc))
896 {
897 rc = RTPathAppend(pszDst, RTPATH_MAX, RTPathFilename(pState->pszFilename));
898 if (RT_SUCCESS(rc))
899 {
900 size_t cchDst = strlen(pszDst);
901 size_t cchSuff = strlen(pszSuff);
902 if (cchDst + cchSuff < RTPATH_MAX)
903 {
904 memcpy(&pszDst[cchDst], pszSuff, cchSuff + 1);
905 return VINF_SUCCESS;
906 }
907 else
908 rc = VERR_BUFFER_OVERFLOW;
909 }
910 }
911 return rc;
912}
913
914/**
915 * Interprets the specified string as decimal numbers.
916 *
917 * @returns true if parsed successfully, false if not.
918 * @param pch The string (not terminated).
919 * @param cch The string length.
920 * @param pu Where to return the value.
921 */
922static bool scmSvnReadNumber(const char *pch, size_t cch, size_t *pu)
923{
924 size_t u = 0;
925 while (cch-- > 0)
926 {
927 char ch = *pch++;
928 if (ch < '0' || ch > '9')
929 return false;
930 u *= 10;
931 u += ch - '0';
932 }
933 *pu = u;
934 return true;
935}
936
937
938#ifdef SCM_WITH_DYNAMIC_LIB_SVN
939
940/**
941 * Wrapper around RTPathAbs.
942 * @returns Same as RTPathAbs.
943 * @param pszPath The relative path.
944 * @param pszAbsPath Where to return the absolute path.
945 * @param cbAbsPath Size of the @a pszAbsPath buffer.
946 */
947static int scmSvnAbsPath(const char *pszPath, char *pszAbsPath, size_t cbAbsPath)
948{
949 int rc = RTPathAbs(pszPath, pszAbsPath, cbAbsPath);
950# if RTPATH_STYLE == RTPATH_STR_F_STYLE_DOS
951 if (RT_SUCCESS(rc))
952 {
953 RTPathChangeToUnixSlashes(pszAbsPath, true /*fForce*/);
954 /* To avoid: svn: E235000: In file '..\..\..\subversion\libsvn_client\prop_commands.c' line 796: assertion failed (svn_dirent_is_absolute(target)) */
955 if (pszAbsPath[1] == ':')
956 pszAbsPath[0] = RT_C_TO_UPPER(pszAbsPath[0]);
957 }
958# endif
959 return rc;
960}
961
962
963/**
964 * Gets a client context and pool.
965 *
966 * This implements caching.
967 *
968 * @returns IPRT status code.
969 * @param ppCtx Where to return the context
970 * @param ppPool Where to return the pool.
971 */
972static int scmSvnGetClientContextAndPool(svn_client_ctx_t **ppCtx, apr_pool_t **ppPool)
973{
974 /*
975 * Use cached if present.
976 */
977 if (g_pSvnClientCtx && g_pSvnPool)
978 {
979 g_cSvnClientCtxUsed++;
980 *ppCtx = g_pSvnClientCtx;
981 *ppPool = g_pSvnPool;
982 return VINF_SUCCESS;
983 }
984 Assert(!g_pSvnClientCtx);
985 Assert(!g_pSvnPool);
986
987 /*
988 * Create new pool and context.
989 */
990 apr_pool_t *pPool = g_pfnSvnPoolCreateEx(NULL, NULL);
991 if (pPool)
992 {
993 svn_client_ctx_t *pCtx = NULL;
994 svn_error_t *pErr = g_pfnSvnClientCreateContext(&pCtx, pPool);
995 if (!pErr)
996 {
997 g_cSvnClientCtxUsed = 1;
998 g_pSvnClientCtx = *ppCtx = pCtx;
999 g_pSvnPool = *ppPool = pPool;
1000 return VINF_SUCCESS;
1001 }
1002 g_pfnAprPoolDestroy(pPool);
1003 }
1004
1005 *ppCtx = NULL;
1006 *ppPool = NULL;
1007 return VERR_GENERAL_FAILURE;
1008}
1009
1010
1011/**
1012 * Puts back a client context and pool after use.
1013 *
1014 * @param pCtx The context.
1015 * @param pPool The pool.
1016 * @param fFlush Whether to flush it.
1017 */
1018static void scmSvnPutClientContextAndPool(svn_client_ctx_t *pCtx, apr_pool_t *pPool, bool fFlush)
1019{
1020 if (fFlush || g_cSvnClientCtxUsed > 4096) /* Disable this to force new context every time. */
1021 {
1022 g_pfnAprPoolDestroy(pPool);
1023 g_pSvnPool = NULL;
1024 g_pSvnClientCtx = NULL;
1025 }
1026 RT_NOREF(pCtx, fFlush);
1027}
1028
1029
1030/**
1031 * Flushes the cached client context and pool
1032 */
1033static void scmSvnFlushClientContextAndPool(void)
1034{
1035 if (g_pSvnPool)
1036 scmSvnPutClientContextAndPool(g_pSvnClientCtx, g_pSvnPool, true /*fFlush*/);
1037 Assert(!g_pSvnPool);
1038}
1039
1040
1041/**
1042 * Checks if @a pszPath exists in the current WC.
1043 *
1044 * @returns true, false or -1. In the latter case, please use the fallback.
1045 * @param pszPath Path to the object that should be investigated.
1046 */
1047static int scmSvnIsObjectInWorkingCopy(const char *pszPath)
1048{
1049 /* svn_client_propget4 and later requires absolute target path. */
1050 char szAbsPath[RTPATH_MAX];
1051 int rc = scmSvnAbsPath(pszPath, szAbsPath, sizeof(szAbsPath));
1052 if (RT_SUCCESS(rc))
1053 {
1054 apr_pool_t *pPool;
1055 svn_client_ctx_t *pCtx = NULL;
1056 rc = scmSvnGetClientContextAndPool(&pCtx, &pPool);
1057 if (RT_SUCCESS(rc))
1058 {
1059 /* Make the call. */
1060 apr_hash_t *pHash = NULL;
1061 svn_opt_revision_t Rev;
1062 RT_ZERO(Rev);
1063 Rev.kind = svn_opt_revision_working;
1064 Rev.value.number = -1L;
1065 svn_error_t *pErr = g_pfnSvnClientPropGet4(&pHash, "svn:no-such-property", szAbsPath, &Rev, &Rev,
1066 NULL /*pActualRev*/, svn_depth_empty, NULL /*pChangeList*/,
1067 pCtx, pPool, pPool);
1068 if (!pErr)
1069 rc = true;
1070 else if (pErr->apr_err == SVN_ERR_UNVERSIONED_RESOURCE)
1071 rc = false;
1072
1073 scmSvnPutClientContextAndPool(pCtx, pPool, false);
1074 }
1075 }
1076 return rc;
1077}
1078
1079#endif /* SCM_WITH_DYNAMIC_LIB_SVN */
1080
1081
1082/**
1083 * Checks if the file we're operating on is part of a SVN working copy.
1084 *
1085 * @returns true if it is, false if it isn't or we cannot tell.
1086 * @param pState The rewrite state to work on. Will use the
1087 * fIsInSvnWorkingCopy member for caching the result.
1088 */
1089bool ScmSvnIsInWorkingCopy(PSCMRWSTATE pState)
1090{
1091 /*
1092 * We don't ask SVN twice as that's expensive.
1093 */
1094 if (pState->fIsInSvnWorkingCopy != 0)
1095 return pState->fIsInSvnWorkingCopy > 0;
1096
1097#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1098 if (g_fSvnFunctionPointersValid)
1099 {
1100 int rc = scmSvnIsObjectInWorkingCopy(pState->pszFilename);
1101 if (rc == (int)true || rc == (int)false)
1102 {
1103 pState->fIsInSvnWorkingCopy = rc == (int)true ? 1 : -1;
1104 return rc == (int)true;
1105 }
1106 }
1107
1108 /* Fallback: */
1109#endif
1110 if (g_enmSvnVersion < kScmSvnVersion_1_7)
1111 {
1112 /*
1113 * Hack: check if the .svn/text-base/<file>.svn-base file exists.
1114 */
1115 char szPath[RTPATH_MAX];
1116 int rc = scmSvnConstructName(pState, ".svn/text-base/", ".svn-base", szPath);
1117 if (RT_SUCCESS(rc))
1118 {
1119 if (RTFileExists(szPath))
1120 {
1121 pState->fIsInSvnWorkingCopy = 1;
1122 return true;
1123 }
1124 }
1125 }
1126 else
1127 {
1128 const char *apszArgs[] = { g_szSvnPath, "propget", "svn:no-such-property", pState->pszFilename, NULL };
1129 char *pszValue;
1130 int rc = scmSvnRunAndGetOutput(pState, apszArgs, true, &pszValue);
1131 if (RT_SUCCESS(rc))
1132 {
1133 RTStrFree(pszValue);
1134 pState->fIsInSvnWorkingCopy = 1;
1135 return true;
1136 }
1137 }
1138 pState->fIsInSvnWorkingCopy = -1;
1139 return false;
1140}
1141
1142
1143/**
1144 * Checks if the specified directory is part of a SVN working copy.
1145 *
1146 * @returns true if it is, false if it isn't or we cannot tell.
1147 * @param pszDir The directory in question.
1148 */
1149bool ScmSvnIsDirInWorkingCopy(const char *pszDir)
1150{
1151#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1152 if (g_fSvnFunctionPointersValid)
1153 {
1154 int rc = scmSvnIsObjectInWorkingCopy(pszDir);
1155 if (rc == (int)true || rc == (int)false)
1156 return rc == (int)true;
1157 }
1158
1159 /* Fallback: */
1160#endif
1161 if (g_enmSvnVersion < kScmSvnVersion_1_7)
1162 {
1163 /*
1164 * Hack: check if the .svn/ dir exists.
1165 */
1166 char szPath[RTPATH_MAX];
1167 int rc = RTPathJoin(szPath, sizeof(szPath), pszDir, ".svn");
1168 if (RT_SUCCESS(rc))
1169 return RTDirExists(szPath);
1170 }
1171 else
1172 {
1173 const char *apszArgs[] = { g_szSvnPath, "propget", "svn:no-such-property", pszDir, NULL };
1174 char *pszValue;
1175 int rc = scmSvnRunAndGetOutput(NULL, apszArgs, true, &pszValue);
1176 if (RT_SUCCESS(rc))
1177 {
1178 RTStrFree(pszValue);
1179 return true;
1180 }
1181 }
1182 return false;
1183}
1184
1185
1186#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1187/**
1188 * Checks if @a pszPath exists in the current WC.
1189 *
1190 * @returns IPRT status code - VERR_NOT_SUPPORT if fallback should be attempted.
1191 * @param pszPath Path to the object that should be investigated.
1192 * @param pszProperty The property name.
1193 * @param ppszValue Where to return the property value. Optional.
1194 */
1195static int scmSvnQueryPropertyUsingApi(const char *pszPath, const char *pszProperty, char **ppszValue)
1196{
1197 /* svn_client_propget4 and later requires absolute target path. */
1198 char szAbsPath[RTPATH_MAX];
1199 int rc = scmSvnAbsPath(pszPath, szAbsPath, sizeof(szAbsPath));
1200 if (RT_SUCCESS(rc))
1201 {
1202 apr_pool_t *pPool;
1203 svn_client_ctx_t *pCtx = NULL;
1204 rc = scmSvnGetClientContextAndPool(&pCtx, &pPool);
1205 if (RT_SUCCESS(rc))
1206 {
1207 /* Make the call. */
1208 apr_hash_t *pHash = NULL;
1209 svn_opt_revision_t Rev;
1210 RT_ZERO(Rev);
1211 Rev.kind = svn_opt_revision_working;
1212 Rev.value.number = -1L;
1213 svn_error_t *pErr = g_pfnSvnClientPropGet4(&pHash, pszProperty, szAbsPath, &Rev, &Rev,
1214 NULL /*pActualRev*/, svn_depth_empty, NULL /*pChangeList*/,
1215 pCtx, pPool, pPool);
1216 if (!pErr)
1217 {
1218 /* Get the first value, if any. */
1219 rc = VERR_NOT_FOUND;
1220 apr_hash_index_t *pHashIdx = g_pfnAprHashFirst(pPool, pHash);
1221 if (pHashIdx)
1222 {
1223 const char **ppszFirst = (const char **)g_pfnAprHashThisVal(pHashIdx);
1224 if (ppszFirst && *ppszFirst)
1225 {
1226 if (ppszValue)
1227 rc = RTStrDupEx(ppszValue, *ppszFirst);
1228 else
1229 rc = VINF_SUCCESS;
1230 }
1231 }
1232 }
1233 else if (pErr->apr_err == SVN_ERR_UNVERSIONED_RESOURCE)
1234 rc = VERR_INVALID_STATE;
1235 else
1236 rc = VERR_GENERAL_FAILURE;
1237
1238 scmSvnPutClientContextAndPool(pCtx, pPool, false);
1239 }
1240 }
1241 return rc;
1242}
1243#endif /* SCM_WITH_DYNAMIC_LIB_SVN */
1244
1245
1246/**
1247 * Queries the value of an SVN property.
1248 *
1249 * This will automatically adjust for scheduled changes.
1250 *
1251 * @returns IPRT status code.
1252 * @retval VERR_INVALID_STATE if not a SVN WC file.
1253 * @retval VERR_NOT_FOUND if the property wasn't found.
1254 * @param pState The rewrite state to work on.
1255 * @param pszName The property name.
1256 * @param ppszValue Where to return the property value. Free this
1257 * using RTStrFree. Optional.
1258 */
1259int ScmSvnQueryProperty(PSCMRWSTATE pState, const char *pszName, char **ppszValue)
1260{
1261 int rc;
1262
1263 /*
1264 * Look it up in the scheduled changes.
1265 */
1266 size_t i = pState->cSvnPropChanges;
1267 while (i-- > 0)
1268 if (!strcmp(pState->paSvnPropChanges[i].pszName, pszName))
1269 {
1270 const char *pszValue = pState->paSvnPropChanges[i].pszValue;
1271 if (!pszValue)
1272 return VERR_NOT_FOUND;
1273 if (ppszValue)
1274 return RTStrDupEx(ppszValue, pszValue);
1275 return VINF_SUCCESS;
1276 }
1277
1278#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1279 if (g_fSvnFunctionPointersValid)
1280 {
1281 rc = scmSvnQueryPropertyUsingApi(pState->pszFilename, pszName, ppszValue);
1282 if (rc != VERR_NOT_SUPPORTED)
1283 return rc;
1284 /* Fallback: */
1285 }
1286#endif
1287
1288 if (g_enmSvnVersion < kScmSvnVersion_1_7)
1289 {
1290 /*
1291 * Hack: Read the .svn/props/<file>.svn-work file exists.
1292 */
1293 char szPath[RTPATH_MAX];
1294 rc = scmSvnConstructName(pState, ".svn/props/", ".svn-work", szPath);
1295 if (RT_SUCCESS(rc) && !RTFileExists(szPath))
1296 rc = scmSvnConstructName(pState, ".svn/prop-base/", ".svn-base", szPath);
1297 if (RT_SUCCESS(rc))
1298 {
1299 SCMSTREAM Stream;
1300 rc = ScmStreamInitForReading(&Stream, szPath);
1301 if (RT_SUCCESS(rc))
1302 {
1303 /*
1304 * The current format is K len\n<name>\nV len\n<value>\n" ... END.
1305 */
1306 rc = VERR_NOT_FOUND;
1307 size_t const cchName = strlen(pszName);
1308 SCMEOL enmEol;
1309 size_t cchLine;
1310 const char *pchLine;
1311 while ((pchLine = ScmStreamGetLine(&Stream, &cchLine, &enmEol)) != NULL)
1312 {
1313 /*
1314 * Parse the 'K num' / 'END' line.
1315 */
1316 if ( cchLine == 3
1317 && !memcmp(pchLine, "END", 3))
1318 break;
1319 size_t cchKey;
1320 if ( cchLine < 3
1321 || pchLine[0] != 'K'
1322 || pchLine[1] != ' '
1323 || !scmSvnReadNumber(&pchLine[2], cchLine - 2, &cchKey)
1324 || cchKey == 0
1325 || cchKey > 4096)
1326 {
1327 RTMsgError("%s:%u: Unexpected data '%.*s'\n", szPath, ScmStreamTellLine(&Stream), cchLine, pchLine);
1328 rc = VERR_PARSE_ERROR;
1329 break;
1330 }
1331
1332 /*
1333 * Match the key and skip to the value line. Don't bother with
1334 * names containing EOL markers.
1335 */
1336 size_t const offKey = ScmStreamTell(&Stream);
1337 bool fMatch = cchName == cchKey;
1338 if (fMatch)
1339 {
1340 pchLine = ScmStreamGetLine(&Stream, &cchLine, &enmEol);
1341 if (!pchLine)
1342 break;
1343 fMatch = cchLine == cchName
1344 && !memcmp(pchLine, pszName, cchName);
1345 }
1346
1347 if (RT_FAILURE(ScmStreamSeekAbsolute(&Stream, offKey + cchKey)))
1348 break;
1349 if (RT_FAILURE(ScmStreamSeekByLine(&Stream, ScmStreamTellLine(&Stream) + 1)))
1350 break;
1351
1352 /*
1353 * Read and Parse the 'V num' line.
1354 */
1355 pchLine = ScmStreamGetLine(&Stream, &cchLine, &enmEol);
1356 if (!pchLine)
1357 break;
1358 size_t cchValue;
1359 if ( cchLine < 3
1360 || pchLine[0] != 'V'
1361 || pchLine[1] != ' '
1362 || !scmSvnReadNumber(&pchLine[2], cchLine - 2, &cchValue)
1363 || cchValue > _1M)
1364 {
1365 RTMsgError("%s:%u: Unexpected data '%.*s'\n", szPath, ScmStreamTellLine(&Stream), cchLine, pchLine);
1366 rc = VERR_PARSE_ERROR;
1367 break;
1368 }
1369
1370 /*
1371 * If we have a match, allocate a return buffer and read the
1372 * value into it. Otherwise skip this value and continue
1373 * searching.
1374 */
1375 if (fMatch)
1376 {
1377 if (!ppszValue)
1378 rc = VINF_SUCCESS;
1379 else
1380 {
1381 char *pszValue;
1382 rc = RTStrAllocEx(&pszValue, cchValue + 1);
1383 if (RT_SUCCESS(rc))
1384 {
1385 rc = ScmStreamRead(&Stream, pszValue, cchValue);
1386 if (RT_SUCCESS(rc))
1387 *ppszValue = pszValue;
1388 else
1389 RTStrFree(pszValue);
1390 }
1391 }
1392 break;
1393 }
1394
1395 if (RT_FAILURE(ScmStreamSeekRelative(&Stream, cchValue)))
1396 break;
1397 if (RT_FAILURE(ScmStreamSeekByLine(&Stream, ScmStreamTellLine(&Stream) + 1)))
1398 break;
1399 }
1400
1401 if (RT_FAILURE(ScmStreamGetStatus(&Stream)))
1402 {
1403 rc = ScmStreamGetStatus(&Stream);
1404 RTMsgError("%s: stream error %Rrc\n", szPath, rc);
1405 }
1406 ScmStreamDelete(&Stream);
1407 }
1408 }
1409
1410 if (rc == VERR_FILE_NOT_FOUND)
1411 rc = VERR_NOT_FOUND;
1412 }
1413 else
1414 {
1415 const char *apszArgs[] = { g_szSvnPath, "propget", "--strict", pszName, pState->pszFilename, NULL };
1416 char *pszValue;
1417 rc = scmSvnRunAndGetOutput(pState, apszArgs, false, &pszValue);
1418 if (RT_SUCCESS(rc))
1419 {
1420 if (pszValue && *pszValue)
1421 {
1422 if (ppszValue)
1423 {
1424 *ppszValue = pszValue;
1425 pszValue = NULL;
1426 }
1427 }
1428 else
1429 rc = VERR_NOT_FOUND;
1430 RTStrFree(pszValue);
1431 }
1432 }
1433 return rc;
1434}
1435
1436
1437/**
1438 * Schedules the setting of a property.
1439 *
1440 * @returns IPRT status code.
1441 * @retval VERR_INVALID_STATE if not a SVN WC file.
1442 * @param pState The rewrite state to work on.
1443 * @param pszName The name of the property to set.
1444 * @param pszValue The value. NULL means deleting it.
1445 */
1446int ScmSvnSetProperty(PSCMRWSTATE pState, const char *pszName, const char *pszValue)
1447{
1448 /*
1449 * Update any existing entry first.
1450 */
1451 size_t i = pState->cSvnPropChanges;
1452 while (i-- > 0)
1453 if (!strcmp(pState->paSvnPropChanges[i].pszName, pszName))
1454 {
1455 if (!pszValue)
1456 {
1457 RTStrFree(pState->paSvnPropChanges[i].pszValue);
1458 pState->paSvnPropChanges[i].pszValue = NULL;
1459 }
1460 else
1461 {
1462 char *pszCopy;
1463 int rc = RTStrDupEx(&pszCopy, pszValue);
1464 if (RT_FAILURE(rc))
1465 return rc;
1466 pState->paSvnPropChanges[i].pszValue = pszCopy;
1467 }
1468 return VINF_SUCCESS;
1469 }
1470
1471 /*
1472 * Insert a new entry.
1473 */
1474 i = pState->cSvnPropChanges;
1475 if ((i % 32) == 0)
1476 {
1477 void *pvNew = RTMemRealloc(pState->paSvnPropChanges, (i + 32) * sizeof(SCMSVNPROP));
1478 if (!pvNew)
1479 return VERR_NO_MEMORY;
1480 pState->paSvnPropChanges = (PSCMSVNPROP)pvNew;
1481 }
1482
1483 pState->paSvnPropChanges[i].pszName = RTStrDup(pszName);
1484 pState->paSvnPropChanges[i].pszValue = pszValue ? RTStrDup(pszValue) : NULL;
1485 if ( pState->paSvnPropChanges[i].pszName
1486 && (pState->paSvnPropChanges[i].pszValue || !pszValue) )
1487 pState->cSvnPropChanges = i + 1;
1488 else
1489 {
1490 RTStrFree(pState->paSvnPropChanges[i].pszName);
1491 pState->paSvnPropChanges[i].pszName = NULL;
1492 RTStrFree(pState->paSvnPropChanges[i].pszValue);
1493 pState->paSvnPropChanges[i].pszValue = NULL;
1494 return VERR_NO_MEMORY;
1495 }
1496 return VINF_SUCCESS;
1497}
1498
1499
1500/**
1501 * Schedules a property deletion.
1502 *
1503 * @returns IPRT status code.
1504 * @param pState The rewrite state to work on.
1505 * @param pszName The name of the property to delete.
1506 */
1507int ScmSvnDelProperty(PSCMRWSTATE pState, const char *pszName)
1508{
1509 return ScmSvnSetProperty(pState, pszName, NULL);
1510}
1511
1512
1513/**
1514 * Applies any SVN property changes to the work copy of the file.
1515 *
1516 * @returns IPRT status code.
1517 * @param pState The rewrite state which SVN property changes
1518 * should be applied.
1519 */
1520int ScmSvnDisplayChanges(PSCMRWSTATE pState)
1521{
1522 size_t i = pState->cSvnPropChanges;
1523 while (i-- > 0)
1524 {
1525 const char *pszName = pState->paSvnPropChanges[i].pszName;
1526 const char *pszValue = pState->paSvnPropChanges[i].pszValue;
1527 if (pszValue)
1528 ScmVerbose(pState, 0, "svn propset '%s' '%s' %s\n", pszName, pszValue, pState->pszFilename);
1529 else
1530 ScmVerbose(pState, 0, "svn propdel '%s' %s\n", pszName, pState->pszFilename);
1531 }
1532
1533 return VINF_SUCCESS;
1534}
1535
1536/**
1537 * Applies any SVN property changes to the work copy of the file.
1538 *
1539 * @returns IPRT status code.
1540 * @param pState The rewrite state which SVN property changes
1541 * should be applied.
1542 */
1543int ScmSvnApplyChanges(PSCMRWSTATE pState)
1544{
1545#ifdef SCM_WITH_LATER
1546 if (0)
1547 {
1548 return ...;
1549 }
1550
1551 /* Fallback: */
1552#endif
1553
1554 /*
1555 * Iterate thru the changes and apply them by starting the svn client.
1556 */
1557 for (size_t i = 0; i < pState->cSvnPropChanges; i++)
1558 {
1559 const char *apszArgv[6];
1560 apszArgv[0] = g_szSvnPath;
1561 apszArgv[1] = pState->paSvnPropChanges[i].pszValue ? "propset" : "propdel";
1562 apszArgv[2] = pState->paSvnPropChanges[i].pszName;
1563 int iArg = 3;
1564 if (pState->paSvnPropChanges[i].pszValue)
1565 apszArgv[iArg++] = pState->paSvnPropChanges[i].pszValue;
1566 apszArgv[iArg++] = pState->pszFilename;
1567 apszArgv[iArg++] = NULL;
1568
1569 int rc = scmSvnRun(pState, apszArgv, false);
1570 if (RT_FAILURE(rc))
1571 return rc;
1572 }
1573
1574 return VINF_SUCCESS;
1575}
1576
1577
1578/**
1579 * Initializes the subversion interface.
1580 */
1581void ScmSvnInit(void)
1582{
1583 scmSvnFindSvnBinary(NULL);
1584}
1585
1586
1587void ScmSvnTerm(void)
1588{
1589#ifdef SCM_WITH_DYNAMIC_LIB_SVN
1590 scmSvnFlushClientContextAndPool();
1591#endif
1592}
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