Annotation of src/usr.bin/rcs/co.c, Revision 1.91
1.91 ! xsa 1: /* $OpenBSD: co.c,v 1.90 2006/05/11 09:43:19 xsa Exp $ */
1.1 joris 2: /*
3: * Copyright (c) 2005 Joris Vink <joris@openbsd.org>
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. The name of the author may not be used to endorse or promote products
13: * derived from this software without specific prior written permission.
14: *
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
1.51 xsa 27: #include "includes.h"
1.1 joris 28:
29: #include "rcsprog.h"
30:
1.70 xsa 31: #define CO_OPTSTRING "d:f::I::k:l::M::p::q::r::s:Tu::Vw::x::z::"
1.38 xsa 32:
1.43 xsa 33: static void checkout_err_nobranch(RCSFILE *, const char *, const char *,
34: const char *, int);
1.4 joris 35:
1.1 joris 36: int
37: checkout_main(int argc, char **argv)
38: {
1.86 joris 39: int fd, i, ch, flags, kflag, status, warg;
1.78 pat 40: RCSNUM *rev;
1.1 joris 41: RCSFILE *file;
1.45 joris 42: char fpath[MAXPATHLEN];
1.78 pat 43: char *author, *date, *rev_str, *username, *state;
1.37 xsa 44: time_t rcs_mtime = -1;
1.1 joris 45:
1.78 pat 46: warg = flags = status = 0;
1.33 xsa 47: kflag = RCS_KWEXP_ERR;
1.1 joris 48: rev = RCS_HEAD_REV;
1.73 ray 49: rev_str = NULL;
1.44 joris 50: state = NULL;
51: author = NULL;
1.49 joris 52: date = NULL;
1.4 joris 53:
1.38 xsa 54: while ((ch = rcs_getopt(argc, argv, CO_OPTSTRING)) != -1) {
1.1 joris 55: switch (ch) {
1.49 joris 56: case 'd':
57: date = xstrdup(rcs_optarg);
58: break;
1.18 joris 59: case 'f':
1.73 ray 60: rcs_setrevstr(&rev_str, rcs_optarg);
1.24 niallo 61: flags |= FORCE;
1.18 joris 62: break;
1.65 niallo 63: case 'I':
1.73 ray 64: rcs_setrevstr(&rev_str, rcs_optarg);
1.65 niallo 65: flags |= INTERACTIVE;
66: break;
67:
1.33 xsa 68: case 'k':
69: kflag = rcs_kflag_get(rcs_optarg);
70: if (RCS_KWEXP_INVAL(kflag)) {
1.83 xsa 71: warnx("invalid RCS keyword substitution mode");
1.33 xsa 72: (usage)();
73: exit(1);
74: }
75: break;
1.4 joris 76: case 'l':
1.53 xsa 77: if (flags & CO_UNLOCK) {
1.81 xsa 78: warnx("warning: -u overridden by -l");
1.53 xsa 79: flags &= ~CO_UNLOCK;
80: }
1.73 ray 81: rcs_setrevstr(&rev_str, rcs_optarg);
1.24 niallo 82: flags |= CO_LOCK;
1.26 niallo 83: break;
84: case 'M':
1.73 ray 85: rcs_setrevstr(&rev_str, rcs_optarg);
1.26 niallo 86: flags |= CO_REVDATE;
1.4 joris 87: break;
1.20 joris 88: case 'p':
1.73 ray 89: rcs_setrevstr(&rev_str, rcs_optarg);
1.80 xsa 90: flags |= PIPEOUT;
1.20 joris 91: break;
1.3 joris 92: case 'q':
1.73 ray 93: rcs_setrevstr(&rev_str, rcs_optarg);
1.79 xsa 94: flags |= QUIET;
1.3 joris 95: break;
1.1 joris 96: case 'r':
1.73 ray 97: rcs_setrevstr(&rev_str, rcs_optarg);
1.4 joris 98: break;
1.24 niallo 99: case 's':
1.47 joris 100: state = xstrdup(rcs_optarg);
1.24 niallo 101: flags |= CO_STATE;
1.34 xsa 102: break;
103: case 'T':
104: flags |= PRESERVETIME;
1.24 niallo 105: break;
1.4 joris 106: case 'u':
1.73 ray 107: rcs_setrevstr(&rev_str, rcs_optarg);
1.53 xsa 108: if (flags & CO_LOCK) {
1.81 xsa 109: warnx("warning: -l overridden by -u");
1.53 xsa 110: flags &= ~CO_LOCK;
111: }
1.24 niallo 112: flags |= CO_UNLOCK;
1.1 joris 113: break;
1.7 joris 114: case 'V':
115: printf("%s\n", rcs_version);
116: exit(0);
1.38 xsa 117: case 'w':
1.44 joris 118: /* if no argument, assume current user */
119: if (rcs_optarg == NULL) {
1.48 xsa 120: if ((author = getlogin()) == NULL)
1.84 xsa 121: err(1, "getlogin");
1.78 pat 122: } else {
1.47 joris 123: author = xstrdup(rcs_optarg);
1.78 pat 124: warg = 1;
125: }
1.43 xsa 126: flags |= CO_AUTHOR;
1.38 xsa 127: break;
1.30 xsa 128: case 'x':
1.66 ray 129: /* Use blank extension if none given. */
130: rcs_suffixes = rcs_optarg ? rcs_optarg : "";
1.59 joris 131: break;
132: case 'z':
133: timezone_flag = rcs_optarg;
1.30 xsa 134: break;
1.1 joris 135: default:
136: (usage)();
137: exit(1);
138: }
139: }
140:
1.13 joris 141: argc -= rcs_optind;
142: argv += rcs_optind;
1.1 joris 143:
144: if (argc == 0) {
1.81 xsa 145: warnx("no input file");
1.1 joris 146: (usage)();
147: exit (1);
148: }
1.11 deraadt 149:
1.81 xsa 150: if ((username = getlogin()) == NULL)
1.84 xsa 151: err(1, "getlogin");
1.38 xsa 152:
1.1 joris 153: for (i = 0; i < argc; i++) {
1.86 joris 154: fd = rcs_statfile(argv[i], fpath, sizeof(fpath), flags);
155: if (fd < 0)
1.1 joris 156: continue;
157:
1.79 xsa 158: if (!(flags & QUIET))
1.90 xsa 159: (void)fprintf(stderr, "%s --> %s\n", fpath,
1.80 xsa 160: (flags & PIPEOUT) ? "standard output" : argv[i]);
1.35 xsa 161:
162: if ((flags & CO_LOCK) && (kflag & RCS_KWEXP_VAL)) {
1.81 xsa 163: warnx("%s: cannot combine -kv and -l", fpath);
1.86 joris 164: (void)close(fd);
1.35 xsa 165: continue;
166: }
1.21 niallo 167:
1.86 joris 168: if ((file = rcs_open(fpath, fd,
169: RCS_RDWR|RCS_PARSE_FULLY)) == NULL)
1.1 joris 170: continue;
171:
1.37 xsa 172: if (flags & PRESERVETIME)
1.86 joris 173: rcs_mtime = rcs_get_mtime(file);
1.37 xsa 174:
1.72 xsa 175: rcs_kwexp_set(file, kflag);
1.37 xsa 176:
1.75 ray 177: if (rev_str != NULL) {
178: if ((rev = rcs_getrevnum(rev_str, file)) == NULL)
1.84 xsa 179: errx(1, "invalid revision: %s", rev_str);
1.75 ray 180: } else {
1.76 joris 181: /* no revisions in RCS file, generate empty 0.0 */
182: if (file->rf_ndelta == 0) {
183: rev = rcsnum_parse("0.0");
184: if (rev == NULL)
1.84 xsa 185: errx(1, "failed to generate rev 0.0");
1.76 joris 186: } else {
187: rev = rcsnum_alloc();
188: rcsnum_cpy(file->rf_head, rev, 0);
189: }
1.73 ray 190: }
1.17 joris 191:
1.73 ray 192: if ((status = checkout_rev(file, rev, argv[i], flags,
1.64 niallo 193: username, author, state, date)) < 0) {
1.73 ray 194: rcs_close(file);
195: rcsnum_free(rev);
196: continue;
1.8 niallo 197: }
1.58 xsa 198:
1.79 xsa 199: if (!(flags & QUIET))
1.90 xsa 200: (void)fprintf(stderr, "done\n");
1.17 joris 201:
1.73 ray 202: rcsnum_free(rev);
1.37 xsa 203:
1.86 joris 204: rcs_write(file);
1.37 xsa 205: if (flags & PRESERVETIME)
1.86 joris 206: rcs_set_mtime(file, rcs_mtime);
207: rcs_close(file);
1.1 joris 208: }
209:
1.78 pat 210: if (author != NULL && warg)
211: xfree(author);
212:
213: if (date != NULL)
214: xfree(date);
215:
216: if (state != NULL)
217: xfree(state);
1.1 joris 218:
1.64 niallo 219: return (status);
1.1 joris 220: }
221:
222: void
223: checkout_usage(void)
224: {
1.11 deraadt 225: fprintf(stderr,
1.42 xsa 226: "usage: co [-TV] [-ddate] [-f[rev]] [-I[rev]] [-kmode] [-l[rev]]\n"
227: " [-M[rev]] [-p[rev]] [-q[rev]] [-r[rev]] [-sstate]\n"
228: " [-u[rev]] [-w[user]] [-xsuffixes] [-ztz] file ...\n");
1.1 joris 229: }
1.14 niallo 230:
231: /*
232: * Checkout revision <rev> from RCSFILE <file>, writing it to the path <dst>
1.88 ray 233: * Currently recognised <flags> are CO_LOCK, CO_UNLOCK and CO_REVDATE.
1.14 niallo 234: *
1.49 joris 235: * Looks up revision based upon <lockname>, <author>, <state> and <date>
1.44 joris 236: *
1.14 niallo 237: * Returns 0 on success, -1 on failure.
238: */
239: int
1.24 niallo 240: checkout_rev(RCSFILE *file, RCSNUM *frev, const char *dst, int flags,
1.49 joris 241: const char *lockname, const char *author, const char *state,
242: const char *date)
1.14 niallo 243: {
1.44 joris 244: BUF *bp;
1.69 joris 245: u_int i;
1.86 joris 246: int fd, lcount;
1.60 niallo 247: char buf[16];
1.14 niallo 248: mode_t mode = 0444;
1.18 joris 249: struct stat st;
1.44 joris 250: struct rcs_delta *rdp;
251: struct rcs_lock *lkp;
1.49 joris 252: char *content, msg[128], *fdate;
253: time_t rcsdate, givendate;
1.69 joris 254: RCSNUM *rev;
1.49 joris 255:
256: rcsdate = givendate = -1;
257: if (date != NULL)
1.85 joris 258: givendate = rcs_date_parse(date);
1.14 niallo 259:
1.90 xsa 260: if (file->rf_ndelta == 0 && !(flags & QUIET))
261: (void)fprintf(stderr,
262: "no revisions present; generating empty revision 0.0\n");
1.76 joris 263:
1.69 joris 264: /* XXX rcsnum_cmp()
265: * Check out the latest revision if <frev> is greater than HEAD
266: */
1.76 joris 267: if (file->rf_ndelta != 0) {
268: for (i = 0; i < file->rf_head->rn_len; i++) {
269: if (file->rf_head->rn_id[i] < frev->rn_id[i]) {
270: frev = file->rf_head;
271: break;
272: }
1.69 joris 273: }
274: }
1.15 niallo 275:
1.44 joris 276: lcount = 0;
277: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
278: if (!strcmp(lkp->rl_name, lockname))
279: lcount++;
280: }
281:
282: /*
283: * If the user didn't specify any revision, we cycle through
284: * revisions to lookup the first one that matches what he specified.
285: *
286: * If we cannot find one, we return an error.
287: */
288: rdp = NULL;
1.77 deraadt 289: if (file->rf_ndelta != 0 && frev == file->rf_head) {
1.44 joris 290: if (lcount > 1) {
1.81 xsa 291: warnx("multiple revisions locked by %s; "
1.44 joris 292: "please specify one", lockname);
293: return (-1);
294: }
295:
296: TAILQ_FOREACH(rdp, &file->rf_delta, rd_list) {
1.49 joris 297: if (date != NULL) {
298: fdate = asctime(&rdp->rd_date);
1.85 joris 299: rcsdate = rcs_date_parse(fdate);
1.49 joris 300: if (givendate <= rcsdate)
301: continue;
302: }
303:
1.77 deraadt 304: if (author != NULL &&
305: strcmp(rdp->rd_author, author))
1.44 joris 306: continue;
1.49 joris 307:
1.77 deraadt 308: if (state != NULL &&
309: strcmp(rdp->rd_state, state))
1.44 joris 310: continue;
311:
312: frev = rdp->rd_num;
313: break;
314: }
1.76 joris 315: } else if (file->rf_ndelta != 0) {
1.44 joris 316: rdp = rcs_findrev(file, frev);
317: }
318:
1.77 deraadt 319: if (file->rf_ndelta != 0 && rdp == NULL) {
1.49 joris 320: checkout_err_nobranch(file, author, date, state, flags);
1.44 joris 321: return (-1);
322: }
323:
1.76 joris 324: if (file->rf_ndelta == 0)
325: rev = frev;
326: else
327: rev = rdp->rd_num;
328:
1.69 joris 329: rcsnum_tostr(rev, buf, sizeof(buf));
1.15 niallo 330:
1.77 deraadt 331: if (file->rf_ndelta != 0 && rdp->rd_locker != NULL) {
1.44 joris 332: if (strcmp(lockname, rdp->rd_locker)) {
1.87 ray 333: if (strlcpy(msg, "Revision %s is already locked by %s; ",
334: sizeof(msg)) >= sizeof(msg))
335: errx(1, "msg too long");
1.76 joris 336:
337: if (flags & CO_UNLOCK) {
1.87 ray 338: if (strlcat(msg, "use co -r or rcs -u",
339: sizeof(msg)) >= sizeof(msg))
340: errx(1, "msg too long");
1.76 joris 341: }
342:
1.81 xsa 343: warnx(msg, buf, rdp->rd_locker);
1.44 joris 344: return (-1);
345: }
346: }
347:
1.79 xsa 348: if (!(flags & QUIET) && !(flags & NEWFILE) &&
1.77 deraadt 349: !(flags & CO_REVERT) && file->rf_ndelta != 0)
1.91 ! xsa 350: (void)fprintf(stderr, "revision %s", buf);
1.74 deraadt 351:
1.76 joris 352: if (file->rf_ndelta != 0) {
353: if ((bp = rcs_getrev(file, rev)) == NULL) {
1.81 xsa 354: warnx("cannot find revision `%s'", buf);
1.76 joris 355: return (-1);
356: }
357: } else {
1.85 joris 358: bp = rcs_buf_alloc(1, 0);
1.14 niallo 359: }
1.69 joris 360:
1.55 niallo 361: /*
362: * Do keyword expansion if required.
363: */
1.76 joris 364: if (file->rf_ndelta != 0)
365: bp = rcs_kwexp_buf(bp, file, rev);
1.14 niallo 366:
1.67 niallo 367: /*
368: * File inherits permissions from its ,v file
369: */
1.86 joris 370: if (file->fd != -1) {
371: if (fstat(file->fd, &st) == -1)
372: err(1, "%s", file->rf_path);
373: mode = st.st_mode;
374: }
1.67 niallo 375:
1.24 niallo 376: if (flags & CO_LOCK) {
1.76 joris 377: if (file->rf_ndelta != 0) {
1.77 deraadt 378: if (lockname != NULL &&
379: rcs_lock_add(file, lockname, rev) < 0) {
1.76 joris 380: if (rcs_errno != RCS_ERR_DUPENT)
381: return (-1);
382: }
1.14 niallo 383: }
1.18 joris 384:
1.67 niallo 385: /* Strip all write bits from mode */
1.86 joris 386: if (file->fd != -1) {
387: mode = st.st_mode &
388: (S_IXUSR|S_IXGRP|S_IXOTH|S_IRUSR|S_IRGRP|S_IROTH);
389: }
390:
1.67 niallo 391: mode |= S_IWUSR;
1.76 joris 392:
393: if (file->rf_ndelta != 0) {
1.79 xsa 394: if (!(flags & QUIET) && !(flags & NEWFILE) &&
1.77 deraadt 395: !(flags & CO_REVERT))
1.91 ! xsa 396: (void)fprintf(stderr, " (locked)");
1.76 joris 397: }
1.24 niallo 398: } else if (flags & CO_UNLOCK) {
1.76 joris 399: if (file->rf_ndelta != 0) {
400: if (rcs_lock_remove(file, lockname, rev) < 0) {
401: if (rcs_errno != RCS_ERR_NOENT)
402: return (-1);
403: }
1.46 joris 404: }
1.18 joris 405:
1.67 niallo 406: /* Strip all write bits from mode */
1.86 joris 407: if (file->fd != -1) {
408: mode = st.st_mode &
409: (S_IXUSR|S_IXGRP|S_IXOTH|S_IRUSR|S_IRGRP|S_IROTH);
410: }
1.76 joris 411:
412: if (file->rf_ndelta != 0) {
1.79 xsa 413: if (!(flags & QUIET) && !(flags & NEWFILE) &&
1.77 deraadt 414: !(flags & CO_REVERT))
1.91 ! xsa 415: (void)fprintf(stderr, " (unlocked)");
1.76 joris 416: }
1.18 joris 417: }
1.56 xsa 418:
1.90 xsa 419: if (file->rf_ndelta == 0 && !(flags & QUIET) &&
1.76 joris 420: ((flags & CO_LOCK) || (flags & CO_UNLOCK))) {
1.91 ! xsa 421: (void)fprintf(stderr, "no revisions, so nothing can be %s\n",
1.76 joris 422: (flags & CO_LOCK) ? "locked" : "unlocked");
423: } else if (file->rf_ndelta != 0) {
1.88 ray 424: /* XXX - Not a good way to detect if a newline is needed. */
425: if (!(flags & QUIET) && !(flags & NEWFILE) &&
426: !(flags & CO_REVERT))
1.90 xsa 427: (void)fprintf(stderr, "\n");
1.76 joris 428: }
1.18 joris 429:
1.44 joris 430: if (flags & CO_LOCK) {
1.71 niallo 431: if (rcs_errno != RCS_ERR_DUPENT)
432: lcount++;
1.79 xsa 433: if (!(flags & QUIET) && lcount > 1 && !(flags & CO_REVERT))
1.81 xsa 434: warnx("%s: warning: You now have %d locks.",
1.63 xsa 435: file->rf_path, lcount);
1.44 joris 436: }
437:
1.86 joris 438: if (!(flags & PIPEOUT) && stat(dst, &st) != -1 && !(flags & FORCE)) {
1.68 ray 439: /*
440: * XXX - Not sure what is "right". If we go according
441: * to GNU's behavior, an existing file with no writable
442: * bits is overwritten without prompting the user.
443: *
444: * This is dangerous, so we always prompt.
445: * Unfortunately this interferes with an unlocked
446: * checkout followed by a locked checkout, which should
447: * not prompt. One (unimplemented) solution is to check
448: * if the existing file is the same as the checked out
449: * revision, and prompt if there are differences.
450: */
451: if (st.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH))
1.91 ! xsa 452: (void)fprintf(stderr, "writable ");
! 453: (void)fprintf(stderr, "%s exists%s; ", dst,
1.61 ray 454: (getuid() == st.st_uid) ? "" :
455: ", and you do not own it");
1.91 ! xsa 456: (void)fprintf(stderr, "remove it? [ny](n): ");
1.61 ray 457: /* default is n */
1.85 joris 458: if (rcs_yesno() == -1) {
1.79 xsa 459: if (!(flags & QUIET) && isatty(STDIN_FILENO))
1.81 xsa 460: warnx("writable %s exists; "
461: "checkout aborted", dst);
1.68 ray 462: else
1.81 xsa 463: warnx("checkout aborted");
1.61 ray 464: return (-1);
1.18 joris 465: }
1.14 niallo 466: }
1.17 joris 467:
1.80 xsa 468: if (flags & PIPEOUT) {
1.85 joris 469: rcs_buf_putc(bp, '\0');
470: content = rcs_buf_release(bp);
1.20 joris 471: printf("%s", content);
1.47 joris 472: xfree(content);
1.20 joris 473: } else {
1.86 joris 474: (void)unlink(dst);
475:
476: if ((fd = open(dst, O_WRONLY|O_CREAT|O_TRUNC, mode)) < 0)
477: err(1, "%s", dst);
478:
479: if (rcs_buf_write_fd(bp, fd) < 0) {
1.81 xsa 480: warnx("failed to write revision to file");
1.85 joris 481: rcs_buf_free(bp);
1.86 joris 482: (void)close(fd);
1.20 joris 483: return (-1);
484: }
1.86 joris 485:
486: if (fchmod(fd, mode) == -1)
487: warn("%s", dst);
488:
1.85 joris 489: rcs_buf_free(bp);
1.86 joris 490:
1.24 niallo 491: if (flags & CO_REVDATE) {
492: struct timeval tv[2];
1.36 xsa 493: memset(&tv, 0, sizeof(tv));
1.69 joris 494: tv[0].tv_sec = (long)rcs_rev_getdate(file, rev);
1.24 niallo 495: tv[1].tv_sec = tv[0].tv_sec;
1.86 joris 496: if (futimes(fd, (const struct timeval *)&tv) < 0)
1.81 xsa 497: warn("utimes");
1.24 niallo 498: }
1.86 joris 499:
500: (void)close(fd);
1.14 niallo 501: }
1.17 joris 502:
1.14 niallo 503: return (0);
1.43 xsa 504: }
505:
506: /*
507: * checkout_err_nobranch()
508: *
509: * XXX - should handle the dates too.
510: */
511: static void
512: checkout_err_nobranch(RCSFILE *file, const char *author, const char *date,
513: const char *state, int flags)
514: {
515: if (!(flags & CO_AUTHOR))
516: author = NULL;
517: if (!(flags & CO_STATE))
518: state = NULL;
519:
1.81 xsa 520: warnx("%s: No revision on branch has%s%s%s%s%s%s.",
1.43 xsa 521: file->rf_path,
522: date ? " a date before " : "",
523: date ? date : "",
524: author ? " and author " + (date ? 0:4 ) : "",
525: author ? author : "",
526: state ? " and state " + (date || author ? 0:4) : "",
527: state ? state : "");
1.24 niallo 528: }
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