![[BACK]](/icons/back.gif){kind=icon}
Return to rcs.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / rcs|
Return to rcs.c CVS log | Up to [local] / src / usr.bin / rcs |
1.5 ! ray 1: /* $OpenBSD: rcs.c,v 1.4 2006/04/27 07:59:33 xsa Exp $ */
1.1 joris 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@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:
27: #include "includes.h"
28:
29: #include "diff.h"
30: #include "rcs.h"
31: #include "rcsprog.h"
1.4 xsa 32: #include "rcsutil.h"
1.1 joris 33: #include "xmalloc.h"
34:
35: #define RCS_BUFSIZE 16384
36: #define RCS_BUFEXTSIZE 8192
37: #define RCS_KWEXP_SIZE 1024
38:
39: /* RCS token types */
40: #define RCS_TOK_ERR -1
41: #define RCS_TOK_EOF 0
42: #define RCS_TOK_NUM 1
43: #define RCS_TOK_ID 2
44: #define RCS_TOK_STRING 3
45: #define RCS_TOK_SCOLON 4
46: #define RCS_TOK_COLON 5
47:
48: #define RCS_TOK_HEAD 8
49: #define RCS_TOK_BRANCH 9
50: #define RCS_TOK_ACCESS 10
51: #define RCS_TOK_SYMBOLS 11
52: #define RCS_TOK_LOCKS 12
53: #define RCS_TOK_COMMENT 13
54: #define RCS_TOK_EXPAND 14
55: #define RCS_TOK_DATE 15
56: #define RCS_TOK_AUTHOR 16
57: #define RCS_TOK_STATE 17
58: #define RCS_TOK_NEXT 18
59: #define RCS_TOK_BRANCHES 19
60: #define RCS_TOK_DESC 20
61: #define RCS_TOK_LOG 21
62: #define RCS_TOK_TEXT 22
63: #define RCS_TOK_STRICT 23
64:
65: #define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES))
66:
67: #define RCS_NOSCOL 0x01 /* no terminating semi-colon */
68: #define RCS_VOPT 0x02 /* value is optional */
69:
70: /* opaque parse data */
71: struct rcs_pdata {
72: u_int rp_lines;
73:
74: char *rp_buf;
75: size_t rp_blen;
76: char *rp_bufend;
77: size_t rp_tlen;
78:
79: /* pushback token buffer */
80: char rp_ptok[128];
81: int rp_pttype; /* token type, RCS_TOK_ERR if no token */
82:
83: FILE *rp_file;
84: };
85:
86: #define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf
87: #define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_tlen
88:
89: /* invalid characters in RCS symbol names */
90: static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR;
91:
92: /* comment leaders, depending on the file's suffix */
93: static const struct rcs_comment {
94: const char *rc_suffix;
95: const char *rc_cstr;
96: } rcs_comments[] = {
97: { "1", ".\\\" " },
98: { "2", ".\\\" " },
99: { "3", ".\\\" " },
100: { "4", ".\\\" " },
101: { "5", ".\\\" " },
102: { "6", ".\\\" " },
103: { "7", ".\\\" " },
104: { "8", ".\\\" " },
105: { "9", ".\\\" " },
106: { "a", "-- " }, /* Ada */
107: { "ada", "-- " },
108: { "adb", "-- " },
109: { "asm", ";; " }, /* assembler (MS-DOS) */
110: { "ads", "-- " }, /* Ada */
111: { "bat", ":: " }, /* batch (MS-DOS) */
112: { "body", "-- " }, /* Ada */
113: { "c", " * " }, /* C */
114: { "c++", "// " }, /* C++ */
115: { "cc", "// " },
116: { "cpp", "// " },
117: { "cxx", "// " },
118: { "m", "// " }, /* Objective-C */
119: { "cl", ";;; " }, /* Common Lisp */
120: { "cmd", ":: " }, /* command (OS/2) */
121: { "cmf", "c " }, /* CM Fortran */
122: { "csh", "# " }, /* shell */
123: { "e", "# " }, /* efl */
124: { "epsf", "% " }, /* encapsulated postscript */
125: { "epsi", "% " }, /* encapsulated postscript */
126: { "el", "; " }, /* Emacs Lisp */
127: { "f", "c " }, /* Fortran */
128: { "for", "c " },
129: { "h", " * " }, /* C-header */
130: { "hh", "// " }, /* C++ header */
131: { "hpp", "// " },
132: { "hxx", "// " },
133: { "in", "# " }, /* for Makefile.in */
134: { "l", " * " }, /* lex */
135: { "mac", ";; " }, /* macro (DEC-10, MS-DOS, PDP-11, VMS, etc) */
136: { "mak", "# " }, /* makefile, e.g. Visual C++ */
137: { "me", ".\\\" " }, /* me-macros t/nroff */
138: { "ml", "; " }, /* mocklisp */
139: { "mm", ".\\\" " }, /* mm-macros t/nroff */
140: { "ms", ".\\\" " }, /* ms-macros t/nroff */
141: { "man", ".\\\" " }, /* man-macros t/nroff */
142: { "p", " * " }, /* pascal */
143: { "pas", " * " },
144: { "pl", "# " }, /* Perl (conflict with Prolog) */
145: { "pm", "# " }, /* Perl module */
146: { "ps", "% " }, /* postscript */
147: { "psw", "% " }, /* postscript wrap */
148: { "pswm", "% " }, /* postscript wrap */
149: { "r", "# " }, /* ratfor */
150: { "rc", " * " }, /* Microsoft Windows resource file */
151: { "red", "% " }, /* psl/rlisp */
152: { "sh", "# " }, /* shell */
153: { "sl", "% " }, /* psl */
154: { "spec", "-- " }, /* Ada */
155: { "tex", "% " }, /* tex */
156: { "y", " * " }, /* yacc */
157: { "ye", " * " }, /* yacc-efl */
158: { "yr", " * " }, /* yacc-ratfor */
159: };
160:
161: struct rcs_kw rcs_expkw[] = {
162: { "Author", RCS_KW_AUTHOR },
163: { "Date", RCS_KW_DATE },
164: { "Header", RCS_KW_HEADER },
165: { "Id", RCS_KW_ID },
166: { "Log", RCS_KW_LOG },
167: { "Name", RCS_KW_NAME },
168: { "RCSfile", RCS_KW_RCSFILE },
169: { "Revision", RCS_KW_REVISION },
170: { "Source", RCS_KW_SOURCE },
171: { "State", RCS_KW_STATE },
172: };
173:
174: #define NB_COMTYPES (sizeof(rcs_comments)/sizeof(rcs_comments[0]))
175:
176: static struct rcs_key {
177: char rk_str[16];
178: int rk_id;
179: int rk_val;
180: int rk_flags;
181: } rcs_keys[] = {
182: { "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT },
183: { "author", RCS_TOK_AUTHOR, RCS_TOK_ID, 0 },
184: { "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT },
185: { "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT },
186: { "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT },
187: { "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 },
188: { "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL },
189: { "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT },
190: { "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT },
191: { "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 },
192: { "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL },
193: { "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT },
194: { "state", RCS_TOK_STATE, RCS_TOK_ID, RCS_VOPT },
195: { "strict", RCS_TOK_STRICT, 0, 0, },
196: { "symbols", RCS_TOK_SYMBOLS, 0, 0 },
197: { "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL },
198: };
199:
200: #define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0]))
201:
202: static const char *rcs_errstrs[] = {
203: "No error",
204: "No such entry",
205: "Duplicate entry found",
206: "Bad RCS number",
207: "Invalid RCS symbol",
208: "Parse error",
209: };
210:
211: #define RCS_NERR (sizeof(rcs_errstrs)/sizeof(rcs_errstrs[0]))
212:
213: int rcs_errno = RCS_ERR_NOERR;
214: char *timezone_flag = NULL;
215:
216: int rcs_patch_lines(struct rcs_lines *, struct rcs_lines *);
217: static void rcs_parse_init(RCSFILE *);
218: static int rcs_parse_admin(RCSFILE *);
219: static int rcs_parse_delta(RCSFILE *);
220: static void rcs_parse_deltas(RCSFILE *, RCSNUM *);
221: static int rcs_parse_deltatext(RCSFILE *);
222: static void rcs_parse_deltatexts(RCSFILE *, RCSNUM *);
223: static void rcs_parse_desc(RCSFILE *, RCSNUM *);
224:
225: static int rcs_parse_access(RCSFILE *);
226: static int rcs_parse_symbols(RCSFILE *);
227: static int rcs_parse_locks(RCSFILE *);
228: static int rcs_parse_branches(RCSFILE *, struct rcs_delta *);
229: static void rcs_freedelta(struct rcs_delta *);
230: static void rcs_freepdata(struct rcs_pdata *);
231: static int rcs_gettok(RCSFILE *);
232: static int rcs_pushtok(RCSFILE *, const char *, int);
233: static void rcs_growbuf(RCSFILE *);
234: static void rcs_strprint(const u_char *, size_t, FILE *);
235:
236: static char* rcs_expand_keywords(char *, struct rcs_delta *, char *,
237: size_t, int);
238:
239: RCSFILE *
1.3 joris 240: rcs_open(const char *path, int fd, int flags, ...)
1.1 joris 241: {
1.3 joris 242: int mode;
1.1 joris 243: mode_t fmode;
244: RCSFILE *rfp;
245: va_list vap;
246: struct rcs_delta *rdp;
247: struct rcs_lock *lkr;
248:
249: fmode = S_IRUSR|S_IRGRP|S_IROTH;
250: flags &= 0xffff; /* ditch any internal flags */
251:
1.3 joris 252: if (flags & RCS_CREATE) {
253: va_start(vap, flags);
254: mode = va_arg(vap, int);
255: va_end(vap);
256: fmode = (mode_t)mode;
1.1 joris 257: }
258:
259: rfp = xcalloc(1, sizeof(*rfp));
260:
261: rfp->rf_path = xstrdup(path);
262: rfp->rf_flags = flags | RCS_SLOCK | RCS_SYNCED;
263: rfp->rf_mode = fmode;
1.3 joris 264: rfp->fd = fd;
1.1 joris 265:
266: TAILQ_INIT(&(rfp->rf_delta));
267: TAILQ_INIT(&(rfp->rf_access));
268: TAILQ_INIT(&(rfp->rf_symbols));
269: TAILQ_INIT(&(rfp->rf_locks));
270:
271: if (!(rfp->rf_flags & RCS_CREATE))
272: rcs_parse_init(rfp);
273:
274: /* fill in rd_locker */
275: TAILQ_FOREACH(lkr, &(rfp->rf_locks), rl_list) {
276: if ((rdp = rcs_findrev(rfp, lkr->rl_num)) == NULL) {
277: rcs_close(rfp);
278: return (NULL);
279: }
280:
281: rdp->rd_locker = xstrdup(lkr->rl_name);
282: }
283:
284: return (rfp);
285: }
286:
287: /*
288: * rcs_close()
289: *
290: * Close an RCS file handle.
291: */
292: void
293: rcs_close(RCSFILE *rfp)
294: {
295: struct rcs_delta *rdp;
296: struct rcs_access *rap;
297: struct rcs_lock *rlp;
298: struct rcs_sym *rsp;
299:
300: if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED))
301: rcs_write(rfp);
302:
303: while (!TAILQ_EMPTY(&(rfp->rf_delta))) {
304: rdp = TAILQ_FIRST(&(rfp->rf_delta));
305: TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list);
306: rcs_freedelta(rdp);
307: }
308:
309: while (!TAILQ_EMPTY(&(rfp->rf_access))) {
310: rap = TAILQ_FIRST(&(rfp->rf_access));
311: TAILQ_REMOVE(&(rfp->rf_access), rap, ra_list);
312: xfree(rap->ra_name);
313: xfree(rap);
314: }
315:
316: while (!TAILQ_EMPTY(&(rfp->rf_symbols))) {
317: rsp = TAILQ_FIRST(&(rfp->rf_symbols));
318: TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list);
319: rcsnum_free(rsp->rs_num);
320: xfree(rsp->rs_name);
321: xfree(rsp);
322: }
323:
324: while (!TAILQ_EMPTY(&(rfp->rf_locks))) {
325: rlp = TAILQ_FIRST(&(rfp->rf_locks));
326: TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list);
327: rcsnum_free(rlp->rl_num);
328: xfree(rlp->rl_name);
329: xfree(rlp);
330: }
331:
332: if (rfp->rf_head != NULL)
333: rcsnum_free(rfp->rf_head);
334: if (rfp->rf_branch != NULL)
335: rcsnum_free(rfp->rf_branch);
336:
337: if (rfp->rf_path != NULL)
338: xfree(rfp->rf_path);
339: if (rfp->rf_comment != NULL)
340: xfree(rfp->rf_comment);
341: if (rfp->rf_expand != NULL)
342: xfree(rfp->rf_expand);
343: if (rfp->rf_desc != NULL)
344: xfree(rfp->rf_desc);
345: if (rfp->rf_pdata != NULL)
346: rcs_freepdata(rfp->rf_pdata);
347: xfree(rfp);
348: }
349:
350: /*
351: * rcs_write()
352: *
353: * Write the contents of the RCS file handle <rfp> to disk in the file whose
354: * path is in <rf_path>.
355: * Returns 0 on success, or -1 on failure.
356: */
357: int
358: rcs_write(RCSFILE *rfp)
359: {
360: FILE *fp;
1.5 ! ray 361: char buf[1024], numbuf[64], fn[20] = "";
1.1 joris 362: void *bp;
363: struct rcs_access *ap;
364: struct rcs_sym *symp;
365: struct rcs_branch *brp;
366: struct rcs_delta *rdp;
367: struct rcs_lock *lkp;
368: ssize_t nread, nwritten;
369: size_t len;
370: int fd, from_fd, to_fd;
371:
372: from_fd = to_fd = fd = -1;
373:
374: if (rfp->rf_flags & RCS_SYNCED)
375: return (0);
376:
377: /* Write operations need the whole file parsed */
378: rcs_parse_deltatexts(rfp, NULL);
379:
1.5 ! ray 380: if (strlcpy(fn, "/tmp/rcs.XXXXXXXXXX", sizeof(fn)) >= sizeof(fn))
! 381: errx(1, "rcs_write: string truncated");
1.1 joris 382: if ((fd = mkstemp(fn)) == -1)
1.2 xsa 383: err(1, "%s", fn);
1.1 joris 384:
385: if ((fp = fdopen(fd, "w+")) == NULL) {
1.5 ! ray 386: int saved_errno;
! 387:
! 388: saved_errno = errno;
1.2 xsa 389: (void)unlink(fn);
1.5 ! ray 390: errno = saved_errno;
1.2 xsa 391: err(1, "%s", fn);
1.1 joris 392: }
393:
394: if (rfp->rf_head != NULL)
395: rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf));
396: else
397: numbuf[0] = '\0';
398:
399: fprintf(fp, "head\t%s;\n", numbuf);
400:
401: if (rfp->rf_branch != NULL) {
402: rcsnum_tostr(rfp->rf_branch, numbuf, sizeof(numbuf));
403: fprintf(fp, "branch\t%s;\n", numbuf);
404: }
405:
406: fputs("access", fp);
407: TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) {
408: fprintf(fp, "\n\t%s", ap->ra_name);
409: }
410: fputs(";\n", fp);
411:
412: fprintf(fp, "symbols");
413: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
414: rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf));
1.5 ! ray 415: if (strlcpy(buf, symp->rs_name, sizeof(buf)) >= sizeof(buf) ||
! 416: strlcat(buf, ":", sizeof(buf)) >= sizeof(buf) ||
! 417: strlcat(buf, numbuf, sizeof(buf)) >= sizeof(buf))
! 418: errx(1, "rcs_write: string overflow");
1.1 joris 419: fprintf(fp, "\n\t%s", buf);
420: }
421: fprintf(fp, ";\n");
422:
423: fprintf(fp, "locks");
424: TAILQ_FOREACH(lkp, &(rfp->rf_locks), rl_list) {
425: rcsnum_tostr(lkp->rl_num, numbuf, sizeof(numbuf));
426: fprintf(fp, "\n\t%s:%s", lkp->rl_name, numbuf);
427: }
428:
429: fprintf(fp, ";");
430:
431: if (rfp->rf_flags & RCS_SLOCK)
432: fprintf(fp, " strict;");
433: fputc('\n', fp);
434:
435: fputs("comment\t@", fp);
436: if (rfp->rf_comment != NULL) {
437: rcs_strprint((const u_char *)rfp->rf_comment,
438: strlen(rfp->rf_comment), fp);
439: fputs("@;\n", fp);
440: } else
441: fputs("# @;\n", fp);
442:
443: if (rfp->rf_expand != NULL) {
444: fputs("expand @", fp);
445: rcs_strprint((const u_char *)rfp->rf_expand,
446: strlen(rfp->rf_expand), fp);
447: fputs("@;\n", fp);
448: }
449:
450: fputs("\n\n", fp);
451:
452: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
453: fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
454: sizeof(numbuf)));
455: fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;",
456: rdp->rd_date.tm_year + 1900, rdp->rd_date.tm_mon + 1,
457: rdp->rd_date.tm_mday, rdp->rd_date.tm_hour,
458: rdp->rd_date.tm_min, rdp->rd_date.tm_sec);
459: fprintf(fp, "\tauthor %s;\tstate %s;\n",
460: rdp->rd_author, rdp->rd_state);
461: fputs("branches", fp);
462: TAILQ_FOREACH(brp, &(rdp->rd_branches), rb_list) {
463: fprintf(fp, " %s", rcsnum_tostr(brp->rb_num, numbuf,
464: sizeof(numbuf)));
465: }
466: fputs(";\n", fp);
467: fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next,
468: numbuf, sizeof(numbuf)));
469: }
470:
471: fputs("\ndesc\n@", fp);
472: if (rfp->rf_desc != NULL && (len = strlen(rfp->rf_desc)) > 0) {
473: rcs_strprint((const u_char *)rfp->rf_desc, len, fp);
474: if (rfp->rf_desc[len-1] != '\n')
475: fputc('\n', fp);
476: }
477: fputs("@\n", fp);
478:
479: /* deltatexts */
480: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
481: fprintf(fp, "\n\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
482: sizeof(numbuf)));
483: fputs("log\n@", fp);
484: if (rdp->rd_log != NULL) {
485: len = strlen(rdp->rd_log);
486: rcs_strprint((const u_char *)rdp->rd_log, len, fp);
487: if (rdp->rd_log[len-1] != '\n')
488: fputc('\n', fp);
489: }
490: fputs("@\ntext\n@", fp);
491: if (rdp->rd_text != NULL) {
492: rcs_strprint(rdp->rd_text, rdp->rd_tlen, fp);
493:
494: if (rdp->rd_tlen != 0) {
495: if (rdp->rd_text[rdp->rd_tlen-1] != '\n')
496: fputc('\n', fp);
497: }
498: }
499: fputs("@\n", fp);
500: }
501: fclose(fp);
502:
503: /*
504: * We try to use rename() to atomically put the new file in place.
505: * If that fails, we try a copy.
506: */
507: if (rename(fn, rfp->rf_path) == -1) {
508: if (errno == EXDEV) {
509: /* rename() not supported so we have to copy. */
510: if (chmod(rfp->rf_path, S_IWUSR) == -1 &&
511: !(rfp->rf_flags & RCS_CREATE)) {
512: errx(1, "chmod(%s, 0%o) failed",
513: rfp->rf_path, S_IWUSR);
514: }
515:
516: if ((from_fd = open(fn, O_RDONLY)) == -1) {
517: warn("failed to open `%s'",
518: rfp->rf_path);
519: return (-1);
520: }
521:
522: if ((to_fd = open(rfp->rf_path,
523: O_WRONLY|O_TRUNC|O_CREAT)) == -1) {
524: warn("failed to open `%s'", fn);
525: close(from_fd);
526: return (-1);
527: }
528:
529: bp = xmalloc(MAXBSIZE);
530: for (;;) {
531: if ((nread = read(from_fd, bp, MAXBSIZE)) == 0)
532: break;
533: if (nread == -1)
534: goto err;
535: nwritten = write(to_fd, bp, (size_t)nread);
536: if (nwritten == -1 || nwritten != nread)
537: goto err;
538: }
539:
540: if (nread < 0) {
541: err: if (unlink(rfp->rf_path) == -1)
542: warn("failed to unlink `%s'",
543: rfp->rf_path);
544: close(from_fd);
545: close(to_fd);
546: xfree(bp);
547: return (-1);
548: }
549:
550: close(from_fd);
551: close(to_fd);
552: xfree(bp);
553:
554: if (unlink(fn) == -1) {
555: warn("failed to unlink `%s'", fn);
556: return (-1);
557: }
558: } else {
559: warn("failed to access temp RCS output file");
560: return (-1);
561: }
562: }
563:
564: if (chmod(rfp->rf_path, rfp->rf_mode) == -1) {
565: warn("failed to chmod `%s'", rfp->rf_path);
566: return (-1);
567: }
568:
569: rfp->rf_flags |= RCS_SYNCED;
570:
571: return (0);
572: }
573:
574: /*
575: * rcs_head_get()
576: *
577: * Retrieve the revision number of the head revision for the RCS file <file>.
578: */
579: const RCSNUM *
580: rcs_head_get(RCSFILE *file)
581: {
582: return (file->rf_head);
583: }
584:
585: /*
586: * rcs_head_set()
587: *
588: * Set the revision number of the head revision for the RCS file <file> to
589: * <rev>, which must reference a valid revision within the file.
590: */
591: int
592: rcs_head_set(RCSFILE *file, RCSNUM *rev)
593: {
594: if (rcs_findrev(file, rev) == NULL)
595: return (-1);
596:
597: if (file->rf_head == NULL)
598: file->rf_head = rcsnum_alloc();
599:
600: rcsnum_cpy(rev, file->rf_head, 0);
601: file->rf_flags &= ~RCS_SYNCED;
602: return (0);
603: }
604:
605:
606: /*
607: * rcs_branch_get()
608: *
609: * Retrieve the default branch number for the RCS file <file>.
610: * Returns the number on success. If NULL is returned, then there is no
611: * default branch for this file.
612: */
613: const RCSNUM *
614: rcs_branch_get(RCSFILE *file)
615: {
616: return (file->rf_branch);
617: }
618:
619: /*
620: * rcs_branch_set()
621: *
622: * Set the default branch for the RCS file <file> to <bnum>.
623: * Returns 0 on success, -1 on failure.
624: */
625: int
626: rcs_branch_set(RCSFILE *file, const RCSNUM *bnum)
627: {
628: if (file->rf_branch == NULL)
629: file->rf_branch = rcsnum_alloc();
630:
631: rcsnum_cpy(bnum, file->rf_branch, 0);
632: file->rf_flags &= ~RCS_SYNCED;
633: return (0);
634: }
635:
636: /*
637: * rcs_access_add()
638: *
639: * Add the login name <login> to the access list for the RCS file <file>.
640: * Returns 0 on success, or -1 on failure.
641: */
642: int
643: rcs_access_add(RCSFILE *file, const char *login)
644: {
645: struct rcs_access *ap;
646:
647: /* first look for duplication */
648: TAILQ_FOREACH(ap, &(file->rf_access), ra_list) {
649: if (strcmp(ap->ra_name, login) == 0) {
650: rcs_errno = RCS_ERR_DUPENT;
651: return (-1);
652: }
653: }
654:
655: ap = xmalloc(sizeof(*ap));
656: ap->ra_name = xstrdup(login);
657: TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list);
658:
659: /* not synced anymore */
660: file->rf_flags &= ~RCS_SYNCED;
661: return (0);
662: }
663:
664: /*
665: * rcs_access_remove()
666: *
667: * Remove an entry with login name <login> from the access list of the RCS
668: * file <file>.
669: * Returns 0 on success, or -1 on failure.
670: */
671: int
672: rcs_access_remove(RCSFILE *file, const char *login)
673: {
674: struct rcs_access *ap;
675:
676: TAILQ_FOREACH(ap, &(file->rf_access), ra_list)
677: if (strcmp(ap->ra_name, login) == 0)
678: break;
679:
680: if (ap == NULL) {
681: rcs_errno = RCS_ERR_NOENT;
682: return (-1);
683: }
684:
685: TAILQ_REMOVE(&(file->rf_access), ap, ra_list);
686: xfree(ap->ra_name);
687: xfree(ap);
688:
689: /* not synced anymore */
690: file->rf_flags &= ~RCS_SYNCED;
691: return (0);
692: }
693:
694: /*
695: * rcs_sym_add()
696: *
697: * Add a symbol to the list of symbols for the RCS file <rfp>. The new symbol
698: * is named <sym> and is bound to the RCS revision <snum>.
699: * Returns 0 on success, or -1 on failure.
700: */
701: int
702: rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum)
703: {
704: struct rcs_sym *symp;
705:
706: if (!rcs_sym_check(sym)) {
707: rcs_errno = RCS_ERR_BADSYM;
708: return (-1);
709: }
710:
711: /* first look for duplication */
712: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
713: if (strcmp(symp->rs_name, sym) == 0) {
714: rcs_errno = RCS_ERR_DUPENT;
715: return (-1);
716: }
717: }
718:
719: symp = xmalloc(sizeof(*symp));
720: symp->rs_name = xstrdup(sym);
721: symp->rs_num = rcsnum_alloc();
722: rcsnum_cpy(snum, symp->rs_num, 0);
723:
724: TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
725:
726: /* not synced anymore */
727: rfp->rf_flags &= ~RCS_SYNCED;
728: return (0);
729: }
730:
731: /*
732: * rcs_sym_remove()
733: *
734: * Remove the symbol with name <sym> from the symbol list for the RCS file
735: * <file>. If no such symbol is found, the call fails and returns with an
736: * error.
737: * Returns 0 on success, or -1 on failure.
738: */
739: int
740: rcs_sym_remove(RCSFILE *file, const char *sym)
741: {
742: struct rcs_sym *symp;
743:
744: if (!rcs_sym_check(sym)) {
745: rcs_errno = RCS_ERR_BADSYM;
746: return (-1);
747: }
748:
749: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
750: if (strcmp(symp->rs_name, sym) == 0)
751: break;
752:
753: if (symp == NULL) {
754: rcs_errno = RCS_ERR_NOENT;
755: return (-1);
756: }
757:
758: TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list);
759: xfree(symp->rs_name);
760: rcsnum_free(symp->rs_num);
761: xfree(symp);
762:
763: /* not synced anymore */
764: file->rf_flags &= ~RCS_SYNCED;
765: return (0);
766: }
767:
768: /*
769: * rcs_sym_getrev()
770: *
771: * Retrieve the RCS revision number associated with the symbol <sym> for the
772: * RCS file <file>. The returned value is a dynamically-allocated copy and
773: * should be freed by the caller once they are done with it.
774: * Returns the RCSNUM on success, or NULL on failure.
775: */
776: RCSNUM *
777: rcs_sym_getrev(RCSFILE *file, const char *sym)
778: {
779: RCSNUM *num;
780: struct rcs_sym *symp;
781:
782: if (!rcs_sym_check(sym)) {
783: rcs_errno = RCS_ERR_BADSYM;
784: return (NULL);
785: }
786:
787: num = NULL;
788: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
789: if (strcmp(symp->rs_name, sym) == 0)
790: break;
791:
792: if (symp == NULL) {
793: rcs_errno = RCS_ERR_NOENT;
794: } else {
795: num = rcsnum_alloc();
796: rcsnum_cpy(symp->rs_num, num, 0);
797: }
798:
799: return (num);
800: }
801:
802: /*
803: * rcs_sym_check()
804: *
805: * Check the RCS symbol name <sym> for any unsupported characters.
806: * Returns 1 if the tag is correct, 0 if it isn't valid.
807: */
808: int
809: rcs_sym_check(const char *sym)
810: {
811: int ret;
812: const char *cp;
813:
814: ret = 1;
815: cp = sym;
816: if (!isalpha(*cp++))
817: return (0);
818:
819: for (; *cp != '\0'; cp++)
820: if (!isgraph(*cp) || (strchr(rcs_sym_invch, *cp) != NULL)) {
821: ret = 0;
822: break;
823: }
824:
825: return (ret);
826: }
827:
828: /*
829: * rcs_lock_getmode()
830: *
831: * Retrieve the locking mode of the RCS file <file>.
832: */
833: int
834: rcs_lock_getmode(RCSFILE *file)
835: {
836: return (file->rf_flags & RCS_SLOCK) ? RCS_LOCK_STRICT : RCS_LOCK_LOOSE;
837: }
838:
839: /*
840: * rcs_lock_setmode()
841: *
842: * Set the locking mode of the RCS file <file> to <mode>, which must either
843: * be RCS_LOCK_LOOSE or RCS_LOCK_STRICT.
844: * Returns the previous mode on success, or -1 on failure.
845: */
846: int
847: rcs_lock_setmode(RCSFILE *file, int mode)
848: {
849: int pmode;
850: pmode = rcs_lock_getmode(file);
851:
852: if (mode == RCS_LOCK_STRICT)
853: file->rf_flags |= RCS_SLOCK;
854: else if (mode == RCS_LOCK_LOOSE)
855: file->rf_flags &= ~RCS_SLOCK;
856: else
857: errx(1, "rcs_lock_setmode: invalid mode `%d'", mode);
858:
859: file->rf_flags &= ~RCS_SYNCED;
860: return (pmode);
861: }
862:
863: /*
864: * rcs_lock_add()
865: *
866: * Add an RCS lock for the user <user> on revision <rev>.
867: * Returns 0 on success, or -1 on failure.
868: */
869: int
870: rcs_lock_add(RCSFILE *file, const char *user, RCSNUM *rev)
871: {
872: struct rcs_lock *lkp;
873:
874: /* first look for duplication */
875: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
876: if (strcmp(lkp->rl_name, user) == 0 &&
877: rcsnum_cmp(rev, lkp->rl_num, 0) == 0) {
878: rcs_errno = RCS_ERR_DUPENT;
879: return (-1);
880: }
881: }
882:
883: lkp = xmalloc(sizeof(*lkp));
884: lkp->rl_name = xstrdup(user);
885: lkp->rl_num = rcsnum_alloc();
886: rcsnum_cpy(rev, lkp->rl_num, 0);
887:
888: TAILQ_INSERT_TAIL(&(file->rf_locks), lkp, rl_list);
889:
890: /* not synced anymore */
891: file->rf_flags &= ~RCS_SYNCED;
892: return (0);
893: }
894:
895:
896: /*
897: * rcs_lock_remove()
898: *
899: * Remove the RCS lock on revision <rev>.
900: * Returns 0 on success, or -1 on failure.
901: */
902: int
903: rcs_lock_remove(RCSFILE *file, const char *user, RCSNUM *rev)
904: {
905: struct rcs_lock *lkp;
906:
907: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
908: if (strcmp(lkp->rl_name, user) == 0 &&
909: rcsnum_cmp(lkp->rl_num, rev, 0) == 0)
910: break;
911: }
912:
913: if (lkp == NULL) {
914: rcs_errno = RCS_ERR_NOENT;
915: return (-1);
916: }
917:
918: TAILQ_REMOVE(&(file->rf_locks), lkp, rl_list);
919: rcsnum_free(lkp->rl_num);
920: xfree(lkp->rl_name);
921: xfree(lkp);
922:
923: /* not synced anymore */
924: file->rf_flags &= ~RCS_SYNCED;
925: return (0);
926: }
927:
928: /*
929: * rcs_desc_get()
930: *
931: * Retrieve the description for the RCS file <file>.
932: */
933: const char *
934: rcs_desc_get(RCSFILE *file)
935: {
936: return (file->rf_desc);
937: }
938:
939: /*
940: * rcs_desc_set()
941: *
942: * Set the description for the RCS file <file>.
943: */
944: void
945: rcs_desc_set(RCSFILE *file, const char *desc)
946: {
947: char *tmp;
948:
949: tmp = xstrdup(desc);
950: if (file->rf_desc != NULL)
951: xfree(file->rf_desc);
952: file->rf_desc = tmp;
953: file->rf_flags &= ~RCS_SYNCED;
954: }
955:
956: /*
957: * rcs_comment_lookup()
958: *
959: * Lookup the assumed comment leader based on a file's suffix.
960: * Returns a pointer to the string on success, or NULL on failure.
961: */
962: const char *
963: rcs_comment_lookup(const char *filename)
964: {
965: int i;
966: const char *sp;
967:
968: if ((sp = strrchr(filename, '.')) == NULL) {
969: rcs_errno = RCS_ERR_NOENT;
970: return (NULL);
971: }
972: sp++;
973:
974: for (i = 0; i < (int)NB_COMTYPES; i++)
975: if (strcmp(rcs_comments[i].rc_suffix, sp) == 0)
976: return (rcs_comments[i].rc_cstr);
977: return (NULL);
978: }
979:
980: /*
981: * rcs_comment_get()
982: *
983: * Retrieve the comment leader for the RCS file <file>.
984: */
985: const char *
986: rcs_comment_get(RCSFILE *file)
987: {
988: return (file->rf_comment);
989: }
990:
991: /*
992: * rcs_comment_set()
993: *
994: * Set the comment leader for the RCS file <file>.
995: */
996: void
997: rcs_comment_set(RCSFILE *file, const char *comment)
998: {
999: char *tmp;
1000:
1001: tmp = xstrdup(comment);
1002: if (file->rf_comment != NULL)
1003: xfree(file->rf_comment);
1004: file->rf_comment = tmp;
1005: file->rf_flags &= ~RCS_SYNCED;
1006: }
1007:
1008: /*
1009: * rcs_tag_resolve()
1010: *
1011: * Retrieve the revision number corresponding to the tag <tag> for the RCS
1012: * file <file>.
1013: */
1014: RCSNUM *
1015: rcs_tag_resolve(RCSFILE *file, const char *tag)
1016: {
1017: RCSNUM *num;
1018:
1019: if ((num = rcsnum_parse(tag)) == NULL) {
1020: num = rcs_sym_getrev(file, tag);
1021: }
1022:
1023: return (num);
1024: }
1025:
1026: int
1027: rcs_patch_lines(struct rcs_lines *dlines, struct rcs_lines *plines)
1028: {
1029: char op, *ep;
1030: struct rcs_line *lp, *dlp, *ndlp;
1031: int i, lineno, nbln;
1032:
1033: dlp = TAILQ_FIRST(&(dlines->l_lines));
1034: lp = TAILQ_FIRST(&(plines->l_lines));
1035:
1036: /* skip first bogus line */
1037: for (lp = TAILQ_NEXT(lp, l_list); lp != NULL;
1038: lp = TAILQ_NEXT(lp, l_list)) {
1039: op = *(lp->l_line);
1040: lineno = (int)strtol((lp->l_line + 1), &ep, 10);
1041: if (lineno > dlines->l_nblines || lineno < 0 ||
1042: *ep != ' ')
1043: errx(1, "invalid line specification in RCS patch");
1044: ep++;
1045: nbln = (int)strtol(ep, &ep, 10);
1046: if (nbln < 0 || *ep != '\0')
1047: errx(1,
1048: "invalid line number specification in RCS patch");
1049:
1050: /* find the appropriate line */
1051: for (;;) {
1052: if (dlp == NULL)
1053: break;
1054: if (dlp->l_lineno == lineno)
1055: break;
1056: if (dlp->l_lineno > lineno) {
1057: dlp = TAILQ_PREV(dlp, rcs_tqh, l_list);
1058: } else if (dlp->l_lineno < lineno) {
1059: if (((ndlp = TAILQ_NEXT(dlp, l_list)) == NULL) ||
1060: ndlp->l_lineno > lineno)
1061: break;
1062: dlp = ndlp;
1063: }
1064: }
1065: if (dlp == NULL)
1066: errx(1, "can't find referenced line in RCS patch");
1067:
1068: if (op == 'd') {
1069: for (i = 0; (i < nbln) && (dlp != NULL); i++) {
1070: ndlp = TAILQ_NEXT(dlp, l_list);
1071: TAILQ_REMOVE(&(dlines->l_lines), dlp, l_list);
1072: dlp = ndlp;
1073: /* last line is gone - reset dlp */
1074: if (dlp == NULL) {
1075: ndlp = TAILQ_LAST(&(dlines->l_lines),
1076: rcs_tqh);
1077: dlp = ndlp;
1078: }
1079: }
1080: } else if (op == 'a') {
1081: for (i = 0; i < nbln; i++) {
1082: ndlp = lp;
1083: lp = TAILQ_NEXT(lp, l_list);
1084: if (lp == NULL)
1085: errx(1, "truncated RCS patch");
1086: TAILQ_REMOVE(&(plines->l_lines), lp, l_list);
1087: TAILQ_INSERT_AFTER(&(dlines->l_lines), dlp,
1088: lp, l_list);
1089: dlp = lp;
1090:
1091: /* we don't want lookup to block on those */
1092: lp->l_lineno = lineno;
1093:
1094: lp = ndlp;
1095: }
1096: } else
1097: errx(1, "unknown RCS patch operation `%c'", op);
1098:
1099: /* last line of the patch, done */
1100: if (lp->l_lineno == plines->l_nblines)
1101: break;
1102: }
1103:
1104: /* once we're done patching, rebuild the line numbers */
1105: lineno = 0;
1106: TAILQ_FOREACH(lp, &(dlines->l_lines), l_list)
1107: lp->l_lineno = lineno++;
1108: dlines->l_nblines = lineno - 1;
1109:
1110: return (0);
1111: }
1112:
1113: /*
1114: * rcs_getrev()
1115: *
1116: * Get the whole contents of revision <rev> from the RCSFILE <rfp>. The
1117: * returned buffer is dynamically allocated and should be released using
1118: * rcs_buf_free() once the caller is done using it.
1119: */
1120: BUF*
1121: rcs_getrev(RCSFILE *rfp, RCSNUM *frev)
1122: {
1123: u_int i, numlen;
1124: int isbranch, lookonbranch;
1125: size_t len;
1126: void *bp;
1127: RCSNUM *crev, *rev, *brev;
1128: BUF *rbuf;
1129: struct rcs_delta *rdp = NULL;
1130: struct rcs_branch *rb;
1131:
1132: if (rfp->rf_head == NULL)
1133: return (NULL);
1134:
1135: if (frev == RCS_HEAD_REV)
1136: rev = rfp->rf_head;
1137: else
1138: rev = frev;
1139:
1140: /* XXX rcsnum_cmp() */
1141: for (i = 0; i < rfp->rf_head->rn_len; i++) {
1142: if (rfp->rf_head->rn_id[i] < rev->rn_id[i]) {
1143: rcs_errno = RCS_ERR_NOENT;
1144: return (NULL);
1145: }
1146: }
1147:
1148: /* No matter what, we're going to need up the the description parsed */
1149: rcs_parse_desc(rfp, NULL);
1150:
1151: rdp = rcs_findrev(rfp, rfp->rf_head);
1152: if (rdp == NULL) {
1153: warnx("failed to get RCS HEAD revision");
1154: return (NULL);
1155: }
1156:
1157: if (rdp->rd_tlen == 0)
1158: rcs_parse_deltatexts(rfp, rfp->rf_head);
1159:
1160: len = rdp->rd_tlen;
1161: if (len == 0) {
1162: rbuf = rcs_buf_alloc(1, 0);
1163: rcs_buf_empty(rbuf);
1164: return (rbuf);
1165: }
1166:
1167: rbuf = rcs_buf_alloc(len, BUF_AUTOEXT);
1168: rcs_buf_append(rbuf, rdp->rd_text, len);
1169:
1170: isbranch = 0;
1171: brev = NULL;
1172:
1173: /*
1174: * If a branch was passed, get the latest revision on it.
1175: */
1176: if (RCSNUM_ISBRANCH(rev)) {
1177: brev = rev;
1178: rdp = rcs_findrev(rfp, rev);
1179: if (rdp == NULL)
1180: return (NULL);
1181:
1182: rev = rdp->rd_num;
1183: } else {
1184: if (RCSNUM_ISBRANCHREV(rev)) {
1185: brev = rcsnum_revtobr(rev);
1186: isbranch = 1;
1187: }
1188: }
1189:
1190: lookonbranch = 0;
1191: crev = NULL;
1192:
1193: /* Apply patches backwards to get the right version.
1194: */
1195: do {
1196: if (rcsnum_cmp(rfp->rf_head, rev, 0) == 0)
1197: break;
1198:
1199: if (isbranch == 1 && rdp->rd_num->rn_len < rev->rn_len &&
1200: !TAILQ_EMPTY(&(rdp->rd_branches)))
1201: lookonbranch = 1;
1202:
1203: if (isbranch && lookonbranch == 1) {
1204: lookonbranch = 0;
1205: TAILQ_FOREACH(rb, &(rdp->rd_branches), rb_list) {
1206: /* XXX rcsnum_cmp() is totally broken for
1207: * this purpose.
1208: */
1209: numlen = MIN(brev->rn_len, rb->rb_num->rn_len);
1210: for (i = 0; i < numlen; i++) {
1211: if (rb->rb_num->rn_id[i] !=
1212: brev->rn_id[i])
1213: break;
1214: }
1215:
1216: if (i == numlen) {
1217: crev = rb->rb_num;
1218: break;
1219: }
1220: }
1221: } else {
1222: crev = rdp->rd_next;
1223: }
1224:
1225: rdp = rcs_findrev(rfp, crev);
1226: if (rdp == NULL) {
1227: rcs_buf_free(rbuf);
1228: return (NULL);
1229: }
1230:
1231: rcs_buf_putc(rbuf, '\0');
1232:
1233: /* check if we have parsed this rev's deltatext */
1234: if (rdp->rd_tlen == 0)
1235: rcs_parse_deltatexts(rfp, rdp->rd_num);
1236:
1237: bp = rcs_buf_release(rbuf);
1238: rbuf = rcs_patchfile((char *)bp, (char *)rdp->rd_text,
1239: rcs_patch_lines);
1240: xfree(bp);
1241:
1242: if (rbuf == NULL)
1243: break;
1244: } while (rcsnum_cmp(crev, rev, 0) != 0);
1245:
1246: if (rcs_buf_getc(rbuf, rcs_buf_len(rbuf)-1) != '\n' &&
1247: rbuf != NULL)
1248: rcs_buf_putc(rbuf, '\n');
1249:
1250: return (rbuf);
1251: }
1252:
1253: /*
1254: * rcs_rev_add()
1255: *
1256: * Add a revision to the RCS file <rf>. The new revision's number can be
1257: * specified in <rev> (which can also be RCS_HEAD_REV, in which case the
1258: * new revision will have a number equal to the previous head revision plus
1259: * one). The <msg> argument specifies the log message for that revision, and
1260: * <date> specifies the revision's date (a value of -1 is
1261: * equivalent to using the current time).
1262: * If <username> is NULL, set the author for this revision to the current user.
1263: * Otherwise, set it to <username>.
1264: * Returns 0 on success, or -1 on failure.
1265: */
1266: int
1267: rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date,
1268: const char *username)
1269: {
1270: time_t now;
1271: struct passwd *pw;
1272: struct rcs_delta *ordp, *rdp;
1273:
1274: if (rev == RCS_HEAD_REV) {
1275: if (rf->rf_flags & RCS_CREATE) {
1276: if ((rev = rcsnum_parse(RCS_HEAD_INIT)) == NULL)
1277: return (-1);
1278: rf->rf_head = rcsnum_alloc();
1279: rcsnum_cpy(rev, rf->rf_head, 0);
1280: } else {
1281: rev = rcsnum_inc(rf->rf_head);
1282: }
1283: } else {
1284: if ((rdp = rcs_findrev(rf, rev)) != NULL) {
1285: rcs_errno = RCS_ERR_DUPENT;
1286: return (-1);
1287: }
1288: }
1289:
1290: if ((pw = getpwuid(getuid())) == NULL)
1291: errx(1, "getpwuid failed");
1292:
1293: rdp = xcalloc(1, sizeof(*rdp));
1294:
1295: TAILQ_INIT(&(rdp->rd_branches));
1296:
1297: rdp->rd_num = rcsnum_alloc();
1298: rcsnum_cpy(rev, rdp->rd_num, 0);
1299:
1300: rdp->rd_next = rcsnum_alloc();
1301:
1302: if (!(rf->rf_flags & RCS_CREATE)) {
1303: /* next should point to the previous HEAD */
1304: ordp = TAILQ_FIRST(&(rf->rf_delta));
1305: rcsnum_cpy(ordp->rd_num, rdp->rd_next, 0);
1306: }
1307:
1308:
1309: if (username == NULL)
1310: username = pw->pw_name;
1311:
1312: rdp->rd_author = xstrdup(username);
1313: rdp->rd_state = xstrdup(RCS_STATE_EXP);
1314: rdp->rd_log = xstrdup(msg);
1315:
1316: if (date != (time_t)(-1))
1317: now = date;
1318: else
1319: time(&now);
1320: gmtime_r(&now, &(rdp->rd_date));
1321:
1322: TAILQ_INSERT_HEAD(&(rf->rf_delta), rdp, rd_list);
1323: rf->rf_ndelta++;
1324:
1325: /* not synced anymore */
1326: rf->rf_flags &= ~RCS_SYNCED;
1327:
1328: return (0);
1329: }
1330:
1331: /*
1332: * rcs_rev_remove()
1333: *
1334: * Remove the revision whose number is <rev> from the RCS file <rf>.
1335: */
1336: int
1337: rcs_rev_remove(RCSFILE *rf, RCSNUM *rev)
1338: {
1339: size_t len;
1340: char *tmpdir;
1341: char *newdeltatext, path_tmp1[MAXPATHLEN], path_tmp2[MAXPATHLEN];
1342: struct rcs_delta *rdp, *prevrdp, *nextrdp;
1343: BUF *nextbuf, *prevbuf, *newdiff;
1344:
1345: tmpdir = rcs_tmpdir;
1346:
1347: if (rev == RCS_HEAD_REV)
1348: rev = rf->rf_head;
1349:
1350: /* do we actually have that revision? */
1351: if ((rdp = rcs_findrev(rf, rev)) == NULL) {
1352: rcs_errno = RCS_ERR_NOENT;
1353: return (-1);
1354: }
1355:
1356: /*
1357: * This is confusing, the previous delta is next in the TAILQ list.
1358: * the next delta is the previous one in the TAILQ list.
1359: *
1360: * When the HEAD revision got specified, nextrdp will be NULL.
1361: * When the first revision got specified, prevrdp will be NULL.
1362: */
1363: prevrdp = (struct rcs_delta *)TAILQ_NEXT(rdp, rd_list);
1364: nextrdp = (struct rcs_delta *)TAILQ_PREV(rdp, rcs_tqh, rd_list);
1365:
1366: newdeltatext = NULL;
1367: prevbuf = nextbuf = NULL;
1368:
1369: if (prevrdp != NULL) {
1370: if ((prevbuf = rcs_getrev(rf, prevrdp->rd_num)) == NULL)
1371: errx(1, "error getting revision");
1372: }
1373:
1374: if (prevrdp != NULL && nextrdp != NULL) {
1375: if ((nextbuf = rcs_getrev(rf, nextrdp->rd_num)) == NULL)
1376: errx(1, "error getting revision");
1377:
1378: newdiff = rcs_buf_alloc(64, BUF_AUTOEXT);
1379:
1380: /* calculate new diff */
1381: len = strlcpy(path_tmp1, tmpdir, sizeof(path_tmp1));
1382: if (len >= sizeof(path_tmp1))
1383: errx(1, "path truncation in rcs_rev_remove");
1384:
1385: len = strlcat(path_tmp1, "/diff1.XXXXXXXXXX",
1386: sizeof(path_tmp1));
1387: if (len >= sizeof(path_tmp1))
1388: errx(1, "path truncation in rcs_rev_remove");
1389:
1390: rcs_buf_write_stmp(nextbuf, path_tmp1, 0600);
1391: rcs_buf_free(nextbuf);
1392:
1393: len = strlcpy(path_tmp2, tmpdir, sizeof(path_tmp2));
1394: if (len >= sizeof(path_tmp2))
1395: errx(1, "path truncation in rcs_rev_remove");
1396:
1397: len = strlcat(path_tmp2, "/diff2.XXXXXXXXXX",
1398: sizeof(path_tmp2));
1399: if (len >= sizeof(path_tmp2))
1400: errx(1, "path truncation in rcs_rev_remove");
1401:
1402: rcs_buf_write_stmp(prevbuf, path_tmp2, 0600);
1403: rcs_buf_free(prevbuf);
1404:
1405: diff_format = D_RCSDIFF;
1406: rcs_diffreg(path_tmp1, path_tmp2, newdiff);
1407:
1408: newdeltatext = rcs_buf_release(newdiff);
1409: } else if (nextrdp == NULL && prevrdp != NULL) {
1410: newdeltatext = rcs_buf_release(prevbuf);
1411: }
1412:
1413: if (newdeltatext != NULL) {
1414: if (rcs_deltatext_set(rf, prevrdp->rd_num, newdeltatext) < 0)
1415: errx(1, "error setting new deltatext");
1416: }
1417:
1418: TAILQ_REMOVE(&(rf->rf_delta), rdp, rd_list);
1419:
1420: /* update pointers */
1421: if (prevrdp != NULL && nextrdp != NULL) {
1422: rcsnum_cpy(prevrdp->rd_num, nextrdp->rd_next, 0);
1423: } else if (prevrdp != NULL) {
1424: if (rcs_head_set(rf, prevrdp->rd_num) < 0)
1425: errx(1, "rcs_head_set failed");
1426: } else if (nextrdp != NULL) {
1427: rcsnum_free(nextrdp->rd_next);
1428: nextrdp->rd_next = rcsnum_alloc();
1429: } else {
1430: rcsnum_free(rf->rf_head);
1431: rf->rf_head = NULL;
1432: }
1433:
1434: rf->rf_ndelta--;
1435: rf->rf_flags &= ~RCS_SYNCED;
1436:
1437: rcs_freedelta(rdp);
1438:
1439: if (newdeltatext != NULL)
1440: xfree(newdeltatext);
1441:
1442: return (0);
1443: }
1444:
1445: /*
1446: * rcs_findrev()
1447: *
1448: * Find a specific revision's delta entry in the tree of the RCS file <rfp>.
1449: * The revision number is given in <rev>.
1450: *
1451: * If the given revision is a branch number, we translate it into the latest
1452: * revision on the branch.
1453: *
1454: * Returns a pointer to the delta on success, or NULL on failure.
1455: */
1456: struct rcs_delta *
1457: rcs_findrev(RCSFILE *rfp, RCSNUM *rev)
1458: {
1459: u_int cmplen;
1460: struct rcs_delta *rdp;
1461: RCSNUM *brev, *frev;
1462:
1463: /*
1464: * We need to do more parsing if the last revision in the linked list
1465: * is greater than the requested revision.
1466: */
1467: rdp = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist);
1468: if (rdp == NULL ||
1469: rcsnum_cmp(rdp->rd_num, rev, 0) == -1) {
1470: rcs_parse_deltas(rfp, rev);
1471: }
1472:
1473: /*
1474: * Translate a branch into the latest revision on the branch itself.
1475: */
1476: if (RCSNUM_ISBRANCH(rev)) {
1477: brev = rcsnum_brtorev(rev);
1478: frev = brev;
1479: for (;;) {
1480: rdp = rcs_findrev(rfp, frev);
1481: if (rdp == NULL)
1482: return (NULL);
1483:
1484: if (rdp->rd_next->rn_len == 0)
1485: break;
1486:
1487: frev = rdp->rd_next;
1488: }
1489:
1490: rcsnum_free(brev);
1491: return (rdp);
1492: }
1493:
1494: cmplen = rev->rn_len;
1495:
1496: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
1497: if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0)
1498: return (rdp);
1499: }
1500:
1501: return (NULL);
1502: }
1503:
1504: /*
1505: * rcs_kwexp_set()
1506: *
1507: * Set the keyword expansion mode to use on the RCS file <file> to <mode>.
1508: */
1509: void
1510: rcs_kwexp_set(RCSFILE *file, int mode)
1511: {
1512: int i;
1513: char *tmp, buf[8] = "";
1514:
1515: if (RCS_KWEXP_INVAL(mode))
1516: return;
1517:
1518: i = 0;
1519: if (mode == RCS_KWEXP_NONE)
1520: buf[0] = 'b';
1521: else if (mode == RCS_KWEXP_OLD)
1522: buf[0] = 'o';
1523: else {
1524: if (mode & RCS_KWEXP_NAME)
1525: buf[i++] = 'k';
1526: if (mode & RCS_KWEXP_VAL)
1527: buf[i++] = 'v';
1528: if (mode & RCS_KWEXP_LKR)
1529: buf[i++] = 'l';
1530: }
1531:
1532: tmp = xstrdup(buf);
1533: if (file->rf_expand != NULL)
1534: xfree(file->rf_expand);
1535: file->rf_expand = tmp;
1536: /* not synced anymore */
1537: file->rf_flags &= ~RCS_SYNCED;
1538: }
1539:
1540: /*
1541: * rcs_kwexp_get()
1542: *
1543: * Retrieve the keyword expansion mode to be used for the RCS file <file>.
1544: */
1545: int
1546: rcs_kwexp_get(RCSFILE *file)
1547: {
1548: return rcs_kflag_get(file->rf_expand);
1549: }
1550:
1551: /*
1552: * rcs_kflag_get()
1553: *
1554: * Get the keyword expansion mode from a set of character flags given in
1555: * <flags> and return the appropriate flag mask. In case of an error, the
1556: * returned mask will have the RCS_KWEXP_ERR bit set to 1.
1557: */
1558: int
1559: rcs_kflag_get(const char *flags)
1560: {
1561: int fl;
1562: size_t len;
1563: const char *fp;
1564:
1565: fl = 0;
1566: len = strlen(flags);
1567:
1568: for (fp = flags; *fp != '\0'; fp++) {
1569: if (*fp == 'k')
1570: fl |= RCS_KWEXP_NAME;
1571: else if (*fp == 'v')
1572: fl |= RCS_KWEXP_VAL;
1573: else if (*fp == 'l')
1574: fl |= RCS_KWEXP_LKR;
1575: else if (*fp == 'o') {
1576: if (len != 1)
1577: fl |= RCS_KWEXP_ERR;
1578: fl |= RCS_KWEXP_OLD;
1579: } else if (*fp == 'b') {
1580: if (len != 1)
1581: fl |= RCS_KWEXP_ERR;
1582: } else /* unknown letter */
1583: fl |= RCS_KWEXP_ERR;
1584: }
1585:
1586: return (fl);
1587: }
1588:
1589: /*
1590: * rcs_errstr()
1591: *
1592: * Get the error string matching the RCS error code <code>.
1593: */
1594: const char *
1595: rcs_errstr(int code)
1596: {
1597: const char *esp;
1598:
1599: if (code < 0 || (code >= (int)RCS_NERR && code != RCS_ERR_ERRNO))
1600: esp = NULL;
1601: else if (code == RCS_ERR_ERRNO)
1602: esp = strerror(errno);
1603: else
1604: esp = rcs_errstrs[code];
1605: return (esp);
1606: }
1607:
1608: /* rcs_parse_deltas()
1609: *
1610: * Parse deltas. If <rev> is not NULL, parse only as far as that
1611: * revision. If <rev> is NULL, parse all deltas.
1612: */
1613: static void
1614: rcs_parse_deltas(RCSFILE *rfp, RCSNUM *rev)
1615: {
1616: int ret;
1617: struct rcs_delta *enddelta;
1618:
1619: if ((rfp->rf_flags & PARSED_DELTAS) || (rfp->rf_flags & RCS_CREATE))
1620: return;
1621:
1622: for (;;) {
1623: ret = rcs_parse_delta(rfp);
1624: if (rev != NULL) {
1625: enddelta = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist);
1626: if (rcsnum_cmp(enddelta->rd_num, rev, 0) == 0)
1627: break;
1628: }
1629: if (ret == 0) {
1630: rfp->rf_flags |= PARSED_DELTAS;
1631: break;
1632: }
1633: else if (ret == -1)
1634: errx(1, "error parsing deltas");
1635: }
1636: }
1637:
1638: /* rcs_parse_deltatexts()
1639: *
1640: * Parse deltatexts. If <rev> is not NULL, parse only as far as that
1641: * revision. If <rev> is NULL, parse everything.
1642: */
1643: static void
1644: rcs_parse_deltatexts(RCSFILE *rfp, RCSNUM *rev)
1645: {
1646: int ret;
1647: struct rcs_delta *rdp;
1648:
1649: if ((rfp->rf_flags & PARSED_DELTATEXTS) ||
1650: (rfp->rf_flags & RCS_CREATE))
1651: return;
1652:
1653: if (!(rfp->rf_flags & PARSED_DESC))
1654: rcs_parse_desc(rfp, rev);
1655: for (;;) {
1656: if (rev != NULL) {
1657: rdp = rcs_findrev(rfp, rev);
1658: if (rdp->rd_text != NULL)
1659: break;
1660: else
1661: ret = rcs_parse_deltatext(rfp);
1662: } else
1663: ret = rcs_parse_deltatext(rfp);
1664: if (ret == 0) {
1665: rfp->rf_flags |= PARSED_DELTATEXTS;
1666: break;
1667: }
1668: else if (ret == -1)
1669: errx(1, "problem parsing deltatexts");
1670: }
1671: }
1672:
1673: /* rcs_parse_desc()
1674: *
1675: * Parse RCS description.
1676: */
1677: static void
1678: rcs_parse_desc(RCSFILE *rfp, RCSNUM *rev)
1679: {
1680: int ret = 0;
1681:
1682: if ((rfp->rf_flags & PARSED_DESC) || (rfp->rf_flags & RCS_CREATE))
1683: return;
1684: if (!(rfp->rf_flags & PARSED_DELTAS))
1685: rcs_parse_deltas(rfp, rev);
1686: /* do parsing */
1687: ret = rcs_gettok(rfp);
1688: if (ret != RCS_TOK_DESC)
1689: errx(1, "token `%s' found where RCS desc expected",
1690: RCS_TOKSTR(rfp));
1691:
1692: ret = rcs_gettok(rfp);
1693: if (ret != RCS_TOK_STRING)
1694: errx(1, "token `%s' found where RCS desc expected",
1695: RCS_TOKSTR(rfp));
1696:
1697: rfp->rf_desc = xstrdup(RCS_TOKSTR(rfp));
1698: rfp->rf_flags |= PARSED_DESC;
1699: }
1700:
1701: /*
1702: * rcs_parse_init()
1703: *
1704: * Initial parsing of file <path>, which are in the RCS format.
1705: * Just does admin section.
1706: */
1707: static void
1708: rcs_parse_init(RCSFILE *rfp)
1709: {
1710: struct rcs_pdata *pdp;
1711:
1712: if (rfp->rf_flags & RCS_PARSED)
1713: return;
1714:
1715: pdp = xcalloc(1, sizeof(*pdp));
1716:
1717: pdp->rp_lines = 0;
1718: pdp->rp_pttype = RCS_TOK_ERR;
1719:
1.3 joris 1720: if ((pdp->rp_file = fdopen(rfp->fd, "r")) == NULL)
1721: err(1, "fopen: `%s'", rfp->rf_path);
1.1 joris 1722:
1723: pdp->rp_buf = xmalloc((size_t)RCS_BUFSIZE);
1724: pdp->rp_blen = RCS_BUFSIZE;
1725: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
1726:
1727: /* ditch the strict lock */
1728: rfp->rf_flags &= ~RCS_SLOCK;
1729: rfp->rf_pdata = pdp;
1730:
1731: if (rcs_parse_admin(rfp) < 0) {
1732: rcs_freepdata(pdp);
1733: errx(1, "could not parse admin data");
1734: }
1735:
1736: if (rfp->rf_flags & RCS_PARSE_FULLY)
1737: rcs_parse_deltatexts(rfp, NULL);
1738:
1739: rfp->rf_flags |= RCS_SYNCED;
1740: }
1741:
1742: /*
1743: * rcs_parse_admin()
1744: *
1745: * Parse the administrative portion of an RCS file.
1746: * Returns the type of the first token found after the admin section on
1747: * success, or -1 on failure.
1748: */
1749: static int
1750: rcs_parse_admin(RCSFILE *rfp)
1751: {
1752: u_int i;
1753: int tok, ntok, hmask;
1754: struct rcs_key *rk;
1755:
1756: /* hmask is a mask of the headers already encountered */
1757: hmask = 0;
1758: for (;;) {
1759: tok = rcs_gettok(rfp);
1760: if (tok == RCS_TOK_ERR) {
1761: rcs_errno = RCS_ERR_PARSE;
1762: warnx("parse error in RCS admin section");
1763: goto fail;
1764: } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
1765: /*
1766: * Assume this is the start of the first delta or
1767: * that we are dealing with an empty RCS file and
1768: * we just found the description.
1769: */
1770: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1771: return (tok);
1772: }
1773:
1774: rk = NULL;
1775: for (i = 0; i < RCS_NKEYS; i++)
1776: if (rcs_keys[i].rk_id == tok)
1777: rk = &(rcs_keys[i]);
1778:
1779: if (hmask & (1 << tok)) {
1780: rcs_errno = RCS_ERR_PARSE;
1781: warnx("duplicate RCS key");
1782: goto fail;
1783: }
1784: hmask |= (1 << tok);
1785:
1786: switch (tok) {
1787: case RCS_TOK_HEAD:
1788: case RCS_TOK_BRANCH:
1789: case RCS_TOK_COMMENT:
1790: case RCS_TOK_EXPAND:
1791: ntok = rcs_gettok(rfp);
1792: if (ntok == RCS_TOK_SCOLON)
1793: break;
1794: if (ntok != rk->rk_val) {
1795: rcs_errno = RCS_ERR_PARSE;
1796: warnx("invalid value type for RCS key `%s'",
1797: rk->rk_str);
1798: }
1799:
1800: if (tok == RCS_TOK_HEAD) {
1801: if (rfp->rf_head == NULL)
1802: rfp->rf_head = rcsnum_alloc();
1803: rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1804: rfp->rf_head);
1805: } else if (tok == RCS_TOK_BRANCH) {
1806: if (rfp->rf_branch == NULL)
1807: rfp->rf_branch = rcsnum_alloc();
1808: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1809: rfp->rf_branch) < 0)
1810: goto fail;
1811: } else if (tok == RCS_TOK_COMMENT) {
1812: rfp->rf_comment = xstrdup(RCS_TOKSTR(rfp));
1813: } else if (tok == RCS_TOK_EXPAND) {
1814: rfp->rf_expand = xstrdup(RCS_TOKSTR(rfp));
1815: }
1816:
1817: /* now get the expected semi-colon */
1818: ntok = rcs_gettok(rfp);
1819: if (ntok != RCS_TOK_SCOLON) {
1820: rcs_errno = RCS_ERR_PARSE;
1821: warnx("missing semi-colon after RCS `%s' key",
1822: rk->rk_str);
1823: goto fail;
1824: }
1825: break;
1826: case RCS_TOK_ACCESS:
1827: if (rcs_parse_access(rfp) < 0)
1828: goto fail;
1829: break;
1830: case RCS_TOK_SYMBOLS:
1831: if (rcs_parse_symbols(rfp) < 0)
1832: goto fail;
1833: break;
1834: case RCS_TOK_LOCKS:
1835: if (rcs_parse_locks(rfp) < 0)
1836: goto fail;
1837: break;
1838: default:
1839: rcs_errno = RCS_ERR_PARSE;
1840: warnx("unexpected token `%s' in RCS admin section",
1841: RCS_TOKSTR(rfp));
1842: goto fail;
1843: }
1844: }
1845:
1846: fail:
1847: return (-1);
1848: }
1849:
1850: /*
1851: * rcs_parse_delta()
1852: *
1853: * Parse an RCS delta section and allocate the structure to store that delta's
1854: * information in the <rfp> delta list.
1855: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1856: * -1 on error.
1857: */
1858: static int
1859: rcs_parse_delta(RCSFILE *rfp)
1860: {
1861: int ret, tok, ntok, hmask;
1862: u_int i;
1863: char *tokstr;
1864: RCSNUM *datenum;
1865: struct rcs_delta *rdp;
1866: struct rcs_key *rk;
1867:
1868: rdp = xcalloc(1, sizeof(*rdp));
1869:
1870: rdp->rd_num = rcsnum_alloc();
1871: rdp->rd_next = rcsnum_alloc();
1872:
1873: TAILQ_INIT(&(rdp->rd_branches));
1874:
1875: tok = rcs_gettok(rfp);
1876: if (tok == RCS_TOK_DESC) {
1877: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1878: return (0);
1879: } else if (tok != RCS_TOK_NUM) {
1880: rcs_errno = RCS_ERR_PARSE;
1881: warnx("unexpected token `%s' at start of delta",
1882: RCS_TOKSTR(rfp));
1883: rcs_freedelta(rdp);
1884: return (-1);
1885: }
1886: rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num);
1887:
1888: hmask = 0;
1889: ret = 0;
1890: tokstr = NULL;
1891:
1892: for (;;) {
1893: tok = rcs_gettok(rfp);
1894: if (tok == RCS_TOK_ERR) {
1895: rcs_errno = RCS_ERR_PARSE;
1896: warnx("parse error in RCS delta section");
1897: rcs_freedelta(rdp);
1898: return (-1);
1899: } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
1900: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1901: ret = (tok == RCS_TOK_NUM ? 1 : 0);
1902: break;
1903: }
1904:
1905: rk = NULL;
1906: for (i = 0; i < RCS_NKEYS; i++)
1907: if (rcs_keys[i].rk_id == tok)
1908: rk = &(rcs_keys[i]);
1909:
1910: if (hmask & (1 << tok)) {
1911: rcs_errno = RCS_ERR_PARSE;
1912: warnx("duplicate RCS key");
1913: rcs_freedelta(rdp);
1914: return (-1);
1915: }
1916: hmask |= (1 << tok);
1917:
1918: switch (tok) {
1919: case RCS_TOK_DATE:
1920: case RCS_TOK_AUTHOR:
1921: case RCS_TOK_STATE:
1922: case RCS_TOK_NEXT:
1923: ntok = rcs_gettok(rfp);
1924: if (ntok == RCS_TOK_SCOLON) {
1925: if (rk->rk_flags & RCS_VOPT)
1926: break;
1927: else {
1928: rcs_errno = RCS_ERR_PARSE;
1929: warnx("missing mandatory "
1930: "value to RCS key `%s'",
1931: rk->rk_str);
1932: rcs_freedelta(rdp);
1933: return (-1);
1934: }
1935: }
1936:
1937: if (ntok != rk->rk_val) {
1938: rcs_errno = RCS_ERR_PARSE;
1939: warnx("invalid value type for RCS key `%s'",
1940: rk->rk_str);
1941: rcs_freedelta(rdp);
1942: return (-1);
1943: }
1944:
1945: if (tokstr != NULL)
1946: xfree(tokstr);
1947: tokstr = xstrdup(RCS_TOKSTR(rfp));
1948: /* now get the expected semi-colon */
1949: ntok = rcs_gettok(rfp);
1950: if (ntok != RCS_TOK_SCOLON) {
1951: rcs_errno = RCS_ERR_PARSE;
1952: warnx("missing semi-colon after RCS `%s' key",
1953: rk->rk_str);
1954: xfree(tokstr);
1955: rcs_freedelta(rdp);
1956: return (-1);
1957: }
1958:
1959: if (tok == RCS_TOK_DATE) {
1960: if ((datenum = rcsnum_parse(tokstr)) == NULL) {
1961: xfree(tokstr);
1962: rcs_freedelta(rdp);
1963: return (-1);
1964: }
1965: if (datenum->rn_len != 6) {
1966: rcs_errno = RCS_ERR_PARSE;
1967: warnx("RCS date specification has %s "
1968: "fields",
1969: (datenum->rn_len > 6) ? "too many" :
1970: "missing");
1971: xfree(tokstr);
1972: rcs_freedelta(rdp);
1973: rcsnum_free(datenum);
1974: return (-1);
1975: }
1976: rdp->rd_date.tm_year = datenum->rn_id[0];
1977: if (rdp->rd_date.tm_year >= 1900)
1978: rdp->rd_date.tm_year -= 1900;
1979: rdp->rd_date.tm_mon = datenum->rn_id[1] - 1;
1980: rdp->rd_date.tm_mday = datenum->rn_id[2];
1981: rdp->rd_date.tm_hour = datenum->rn_id[3];
1982: rdp->rd_date.tm_min = datenum->rn_id[4];
1983: rdp->rd_date.tm_sec = datenum->rn_id[5];
1984: rcsnum_free(datenum);
1985: } else if (tok == RCS_TOK_AUTHOR) {
1986: rdp->rd_author = tokstr;
1987: tokstr = NULL;
1988: } else if (tok == RCS_TOK_STATE) {
1989: rdp->rd_state = tokstr;
1990: tokstr = NULL;
1991: } else if (tok == RCS_TOK_NEXT) {
1992: rcsnum_aton(tokstr, NULL, rdp->rd_next);
1993: }
1994: break;
1995: case RCS_TOK_BRANCHES:
1996: if (rcs_parse_branches(rfp, rdp) < 0) {
1997: rcs_freedelta(rdp);
1998: return (-1);
1999: }
2000: break;
2001: default:
2002: rcs_errno = RCS_ERR_PARSE;
2003: warnx("unexpected token `%s' in RCS delta",
2004: RCS_TOKSTR(rfp));
2005: rcs_freedelta(rdp);
2006: return (-1);
2007: }
2008: }
2009:
2010: if (tokstr != NULL)
2011: xfree(tokstr);
2012:
2013: TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list);
2014: rfp->rf_ndelta++;
2015:
2016: return (ret);
2017: }
2018:
2019: /*
2020: * rcs_parse_deltatext()
2021: *
2022: * Parse an RCS delta text section and fill in the log and text field of the
2023: * appropriate delta section.
2024: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
2025: * -1 on error.
2026: */
2027: static int
2028: rcs_parse_deltatext(RCSFILE *rfp)
2029: {
2030: int tok;
2031: RCSNUM *tnum;
2032: struct rcs_delta *rdp;
2033:
2034: tok = rcs_gettok(rfp);
2035: if (tok == RCS_TOK_EOF)
2036: return (0);
2037:
2038: if (tok != RCS_TOK_NUM) {
2039: rcs_errno = RCS_ERR_PARSE;
2040: warnx("unexpected token `%s' at start of RCS delta text",
2041: RCS_TOKSTR(rfp));
2042: return (-1);
2043: }
2044:
2045: tnum = rcsnum_alloc();
2046: rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum);
2047:
2048: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
2049: if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0)
2050: break;
2051: }
2052: rcsnum_free(tnum);
2053:
2054: if (rdp == NULL) {
2055: warnx("RCS delta text `%s' has no matching delta",
2056: RCS_TOKSTR(rfp));
2057: return (-1);
2058: }
2059:
2060: tok = rcs_gettok(rfp);
2061: if (tok != RCS_TOK_LOG) {
2062: rcs_errno = RCS_ERR_PARSE;
2063: warnx("unexpected token `%s' where RCS log expected",
2064: RCS_TOKSTR(rfp));
2065: return (-1);
2066: }
2067:
2068: tok = rcs_gettok(rfp);
2069: if (tok != RCS_TOK_STRING) {
2070: rcs_errno = RCS_ERR_PARSE;
2071: warnx("unexpected token `%s' where RCS log expected",
2072: RCS_TOKSTR(rfp));
2073: return (-1);
2074: }
2075: rdp->rd_log = xstrdup(RCS_TOKSTR(rfp));
2076: tok = rcs_gettok(rfp);
2077: if (tok != RCS_TOK_TEXT) {
2078: rcs_errno = RCS_ERR_PARSE;
2079: warnx("unexpected token `%s' where RCS text expected",
2080: RCS_TOKSTR(rfp));
2081: return (-1);
2082: }
2083:
2084: tok = rcs_gettok(rfp);
2085: if (tok != RCS_TOK_STRING) {
2086: rcs_errno = RCS_ERR_PARSE;
2087: warnx("unexpected token `%s' where RCS text expected",
2088: RCS_TOKSTR(rfp));
2089: return (-1);
2090: }
2091:
2092: rdp->rd_text = xmalloc(RCS_TOKLEN(rfp) + 1);
1.5 ! ray 2093: if (strlcpy(rdp->rd_text, RCS_TOKSTR(rfp), (RCS_TOKLEN(rfp) + 1)) >=
! 2094: RCS_TOKLEN(rfp) + 1)
! 2095: errx(1, "rcs_parse_deltatext: strlcpy");
1.1 joris 2096: rdp->rd_tlen = RCS_TOKLEN(rfp);
2097:
2098: return (1);
2099: }
2100:
2101: /*
2102: * rcs_parse_access()
2103: *
2104: * Parse the access list given as value to the `access' keyword.
2105: * Returns 0 on success, or -1 on failure.
2106: */
2107: static int
2108: rcs_parse_access(RCSFILE *rfp)
2109: {
2110: int type;
2111:
2112: while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) {
2113: if (type != RCS_TOK_ID) {
2114: rcs_errno = RCS_ERR_PARSE;
2115: warnx("unexpected token `%s' in access list",
2116: RCS_TOKSTR(rfp));
2117: return (-1);
2118: }
2119:
2120: if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0)
2121: return (-1);
2122: }
2123:
2124: return (0);
2125: }
2126:
2127: /*
2128: * rcs_parse_symbols()
2129: *
2130: * Parse the symbol list given as value to the `symbols' keyword.
2131: * Returns 0 on success, or -1 on failure.
2132: */
2133: static int
2134: rcs_parse_symbols(RCSFILE *rfp)
2135: {
2136: int type;
2137: struct rcs_sym *symp;
2138:
2139: for (;;) {
2140: type = rcs_gettok(rfp);
2141: if (type == RCS_TOK_SCOLON)
2142: break;
2143:
2144: if (type != RCS_TOK_ID) {
2145: rcs_errno = RCS_ERR_PARSE;
2146: warnx("unexpected token `%s' in symbol list",
2147: RCS_TOKSTR(rfp));
2148: return (-1);
2149: }
2150:
2151: symp = xmalloc(sizeof(*symp));
2152: symp->rs_name = xstrdup(RCS_TOKSTR(rfp));
2153: symp->rs_num = rcsnum_alloc();
2154:
2155: type = rcs_gettok(rfp);
2156: if (type != RCS_TOK_COLON) {
2157: rcs_errno = RCS_ERR_PARSE;
2158: warnx("unexpected token `%s' in symbol list",
2159: RCS_TOKSTR(rfp));
2160: rcsnum_free(symp->rs_num);
2161: xfree(symp->rs_name);
2162: xfree(symp);
2163: return (-1);
2164: }
2165:
2166: type = rcs_gettok(rfp);
2167: if (type != RCS_TOK_NUM) {
2168: rcs_errno = RCS_ERR_PARSE;
2169: warnx("unexpected token `%s' in symbol list",
2170: RCS_TOKSTR(rfp));
2171: rcsnum_free(symp->rs_num);
2172: xfree(symp->rs_name);
2173: xfree(symp);
2174: return (-1);
2175: }
2176:
2177: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) {
2178: warnx("failed to parse RCS NUM `%s'",
2179: RCS_TOKSTR(rfp));
2180: rcsnum_free(symp->rs_num);
2181: xfree(symp->rs_name);
2182: xfree(symp);
2183: return (-1);
2184: }
2185:
2186: TAILQ_INSERT_TAIL(&(rfp->rf_symbols), symp, rs_list);
2187: }
2188:
2189: return (0);
2190: }
2191:
2192: /*
2193: * rcs_parse_locks()
2194: *
2195: * Parse the lock list given as value to the `locks' keyword.
2196: * Returns 0 on success, or -1 on failure.
2197: */
2198: static int
2199: rcs_parse_locks(RCSFILE *rfp)
2200: {
2201: int type;
2202: struct rcs_lock *lkp;
2203:
2204: for (;;) {
2205: type = rcs_gettok(rfp);
2206: if (type == RCS_TOK_SCOLON)
2207: break;
2208:
2209: if (type != RCS_TOK_ID) {
2210: rcs_errno = RCS_ERR_PARSE;
2211: warnx("unexpected token `%s' in lock list",
2212: RCS_TOKSTR(rfp));
2213: return (-1);
2214: }
2215:
2216: lkp = xmalloc(sizeof(*lkp));
2217: lkp->rl_name = xstrdup(RCS_TOKSTR(rfp));
2218: lkp->rl_num = rcsnum_alloc();
2219:
2220: type = rcs_gettok(rfp);
2221: if (type != RCS_TOK_COLON) {
2222: rcs_errno = RCS_ERR_PARSE;
2223: warnx("unexpected token `%s' in symbol list",
2224: RCS_TOKSTR(rfp));
2225: rcsnum_free(lkp->rl_num);
2226: xfree(lkp->rl_name);
2227: xfree(lkp);
2228: return (-1);
2229: }
2230:
2231: type = rcs_gettok(rfp);
2232: if (type != RCS_TOK_NUM) {
2233: rcs_errno = RCS_ERR_PARSE;
2234: warnx("unexpected token `%s' in symbol list",
2235: RCS_TOKSTR(rfp));
2236: rcsnum_free(lkp->rl_num);
2237: xfree(lkp->rl_name);
2238: xfree(lkp);
2239: return (-1);
2240: }
2241:
2242: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) {
2243: warnx("failed to parse RCS NUM `%s'",
2244: RCS_TOKSTR(rfp));
2245: rcsnum_free(lkp->rl_num);
2246: xfree(lkp->rl_name);
2247: xfree(lkp);
2248: return (-1);
2249: }
2250:
2251: TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list);
2252: }
2253:
2254: /* check if we have a `strict' */
2255: type = rcs_gettok(rfp);
2256: if (type != RCS_TOK_STRICT) {
2257: rcs_pushtok(rfp, RCS_TOKSTR(rfp), type);
2258: } else {
2259: rfp->rf_flags |= RCS_SLOCK;
2260:
2261: type = rcs_gettok(rfp);
2262: if (type != RCS_TOK_SCOLON) {
2263: rcs_errno = RCS_ERR_PARSE;
2264: warnx("missing semi-colon after `strict' keyword");
2265: return (-1);
2266: }
2267: }
2268:
2269: return (0);
2270: }
2271:
2272: /*
2273: * rcs_parse_branches()
2274: *
2275: * Parse the list of branches following a `branches' keyword in a delta.
2276: * Returns 0 on success, or -1 on failure.
2277: */
2278: static int
2279: rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp)
2280: {
2281: int type;
2282: struct rcs_branch *brp;
2283:
2284: for (;;) {
2285: type = rcs_gettok(rfp);
2286: if (type == RCS_TOK_SCOLON)
2287: break;
2288:
2289: if (type != RCS_TOK_NUM) {
2290: rcs_errno = RCS_ERR_PARSE;
2291: warnx("unexpected token `%s' in list of branches",
2292: RCS_TOKSTR(rfp));
2293: return (-1);
2294: }
2295:
2296: brp = xmalloc(sizeof(*brp));
2297: brp->rb_num = rcsnum_parse(RCS_TOKSTR(rfp));
2298: if (brp->rb_num == NULL) {
2299: xfree(brp);
2300: return (-1);
2301: }
2302:
2303: TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list);
2304: }
2305:
2306: return (0);
2307: }
2308:
2309: /*
2310: * rcs_freedelta()
2311: *
2312: * Free the contents of a delta structure.
2313: */
2314: static void
2315: rcs_freedelta(struct rcs_delta *rdp)
2316: {
2317: struct rcs_branch *rb;
2318:
2319: if (rdp->rd_num != NULL)
2320: rcsnum_free(rdp->rd_num);
2321: if (rdp->rd_next != NULL)
2322: rcsnum_free(rdp->rd_next);
2323:
2324: if (rdp->rd_author != NULL)
2325: xfree(rdp->rd_author);
2326: if (rdp->rd_locker != NULL)
2327: xfree(rdp->rd_locker);
2328: if (rdp->rd_state != NULL)
2329: xfree(rdp->rd_state);
2330: if (rdp->rd_log != NULL)
2331: xfree(rdp->rd_log);
2332: if (rdp->rd_text != NULL)
2333: xfree(rdp->rd_text);
2334:
2335: while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
2336: TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
2337: rcsnum_free(rb->rb_num);
2338: xfree(rb);
2339: }
2340:
2341: xfree(rdp);
2342: }
2343:
2344: /*
2345: * rcs_freepdata()
2346: *
2347: * Free the contents of the parser data structure.
2348: */
2349: static void
2350: rcs_freepdata(struct rcs_pdata *pd)
2351: {
2352: if (pd->rp_file != NULL)
2353: (void)fclose(pd->rp_file);
2354: if (pd->rp_buf != NULL)
2355: xfree(pd->rp_buf);
2356: xfree(pd);
2357: }
2358:
2359: /*
2360: * rcs_gettok()
2361: *
2362: * Get the next RCS token from the string <str>.
2363: */
2364: static int
2365: rcs_gettok(RCSFILE *rfp)
2366: {
2367: u_int i;
2368: int ch, last, type;
2369: size_t len;
2370: char *bp;
2371: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2372:
2373: type = RCS_TOK_ERR;
2374: bp = pdp->rp_buf;
2375: pdp->rp_tlen = 0;
2376: *bp = '\0';
2377:
2378: if (pdp->rp_pttype != RCS_TOK_ERR) {
2379: type = pdp->rp_pttype;
1.5 ! ray 2380: if (strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen) >=
! 2381: pdp->rp_blen)
! 2382: errx(1, "rcs_gettok: strlcpy");
1.1 joris 2383: pdp->rp_pttype = RCS_TOK_ERR;
2384: return (type);
2385: }
2386:
2387: /* skip leading whitespace */
2388: /* XXX we must skip backspace too for compatibility, should we? */
2389: do {
2390: ch = getc(pdp->rp_file);
2391: if (ch == '\n')
2392: pdp->rp_lines++;
2393: } while (isspace(ch));
2394:
2395: if (ch == EOF) {
2396: type = RCS_TOK_EOF;
2397: } else if (ch == ';') {
2398: type = RCS_TOK_SCOLON;
2399: } else if (ch == ':') {
2400: type = RCS_TOK_COLON;
2401: } else if (isalpha(ch)) {
2402: type = RCS_TOK_ID;
2403: *(bp++) = ch;
2404: for (;;) {
2405: ch = getc(pdp->rp_file);
2406: if (!isalnum(ch) && ch != '_' && ch != '-' &&
2407: ch != '/') {
2408: ungetc(ch, pdp->rp_file);
2409: break;
2410: }
2411: *(bp++) = ch;
2412: pdp->rp_tlen++;
2413: if (bp == pdp->rp_bufend - 1) {
2414: len = bp - pdp->rp_buf;
2415: rcs_growbuf(rfp);
2416: bp = pdp->rp_buf + len;
2417: }
2418: }
2419: *bp = '\0';
2420:
2421: if (type != RCS_TOK_ERR) {
2422: for (i = 0; i < RCS_NKEYS; i++) {
2423: if (strcmp(rcs_keys[i].rk_str,
2424: pdp->rp_buf) == 0) {
2425: type = rcs_keys[i].rk_id;
2426: break;
2427: }
2428: }
2429: }
2430: } else if (ch == '@') {
2431: /* we have a string */
2432: type = RCS_TOK_STRING;
2433: for (;;) {
2434: ch = getc(pdp->rp_file);
2435: if (ch == '@') {
2436: ch = getc(pdp->rp_file);
2437: if (ch != '@') {
2438: ungetc(ch, pdp->rp_file);
2439: break;
2440: }
2441: } else if (ch == '\n')
2442: pdp->rp_lines++;
2443:
2444: *(bp++) = ch;
2445: pdp->rp_tlen++;
2446: if (bp == pdp->rp_bufend - 1) {
2447: len = bp - pdp->rp_buf;
2448: rcs_growbuf(rfp);
2449: bp = pdp->rp_buf + len;
2450: }
2451: }
2452:
2453: *bp = '\0';
2454: } else if (isdigit(ch)) {
2455: *(bp++) = ch;
2456: last = ch;
2457: type = RCS_TOK_NUM;
2458:
2459: for (;;) {
2460: ch = getc(pdp->rp_file);
2461: if (bp == pdp->rp_bufend)
2462: break;
2463: if (!isdigit(ch) && ch != '.') {
2464: ungetc(ch, pdp->rp_file);
2465: break;
2466: }
2467:
2468: if (last == '.' && ch == '.') {
2469: type = RCS_TOK_ERR;
2470: break;
2471: }
2472: last = ch;
2473: *(bp++) = ch;
2474: pdp->rp_tlen++;
2475: }
2476: *bp = '\0';
2477: }
2478:
2479: return (type);
2480: }
2481:
2482: /*
2483: * rcs_pushtok()
2484: *
2485: * Push a token back in the parser's token buffer.
2486: */
2487: static int
2488: rcs_pushtok(RCSFILE *rfp, const char *tok, int type)
2489: {
2490: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2491:
2492: if (pdp->rp_pttype != RCS_TOK_ERR)
2493: return (-1);
2494:
2495: pdp->rp_pttype = type;
1.5 ! ray 2496: if (strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok)) >=
! 2497: sizeof(pdp->rp_ptok))
! 2498: errx(1, "rcs_pushtok: strlcpy");
1.1 joris 2499: return (0);
2500: }
2501:
2502:
2503: /*
2504: * rcs_growbuf()
2505: *
2506: * Attempt to grow the internal parse buffer for the RCS file <rf> by
2507: * RCS_BUFEXTSIZE.
2508: * In case of failure, the original buffer is left unmodified.
2509: */
2510: static void
2511: rcs_growbuf(RCSFILE *rf)
2512: {
2513: void *tmp;
2514: struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata;
2515:
2516: tmp = xrealloc(pdp->rp_buf, 1, pdp->rp_blen + RCS_BUFEXTSIZE);
2517: pdp->rp_buf = tmp;
2518: pdp->rp_blen += RCS_BUFEXTSIZE;
2519: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
2520: }
2521:
2522: /*
2523: * rcs_strprint()
2524: *
2525: * Output an RCS string <str> of size <slen> to the stream <stream>. Any
2526: * '@' characters are escaped. Otherwise, the string can contain arbitrary
2527: * binary data.
2528: */
2529: static void
2530: rcs_strprint(const u_char *str, size_t slen, FILE *stream)
2531: {
2532: const u_char *ap, *ep, *sp;
2533:
2534: if (slen == 0)
2535: return;
2536:
2537: ep = str + slen - 1;
2538:
2539: for (sp = str; sp <= ep;) {
2540: ap = memchr(sp, '@', ep - sp);
2541: if (ap == NULL)
2542: ap = ep;
2543: (void)fwrite(sp, sizeof(u_char), ap - sp + 1, stream);
2544:
2545: if (*ap == '@')
2546: putc('@', stream);
2547: sp = ap + 1;
2548: }
2549: }
2550:
2551: /*
2552: * rcs_expand_keywords()
2553: *
2554: * Return expansion any RCS keywords in <data>
2555: *
2556: * On error, return NULL.
2557: */
2558: static char *
2559: rcs_expand_keywords(char *rcsfile, struct rcs_delta *rdp, char *data,
2560: size_t len, int mode)
2561: {
2562: ptrdiff_t c_offset, sizdiff, start_offset;
2563: size_t i;
2564: int kwtype;
2565: u_int j, found;
2566: char *c, *kwstr, *start, *end, *tbuf;
2567: char expbuf[256], buf[256];
2568: struct tm tb;
2569: char *fmt;
2570:
2571: kwtype = 0;
2572: kwstr = NULL;
2573: i = 0;
2574:
2575: /*
2576: * -z support for RCS
2577: */
2578: tb = rdp->rd_date;
2579: if (timezone_flag != NULL)
2580: rcs_set_tz(timezone_flag, rdp, &tb);
2581:
2582: /*
2583: * Keyword formats:
2584: * $Keyword$
2585: * $Keyword: value$
2586: */
2587: for (c = data; *c != '\0' && i < len; c++) {
2588: if (*c == '$') {
2589: /* remember start of this possible keyword */
2590: start = c;
2591: start_offset = start - data;
2592:
2593: /* first following character has to be alphanumeric */
2594: c++;
2595: if (!isalpha(*c)) {
2596: c = start;
2597: continue;
2598: }
2599:
2600: /* look for any matching keywords */
2601: found = 0;
2602: for (j = 0; j < RCS_NKWORDS; j++) {
2603: if (!strncmp(c, rcs_expkw[j].kw_str,
2604: strlen(rcs_expkw[j].kw_str))) {
2605: found = 1;
2606: kwstr = rcs_expkw[j].kw_str;
2607: kwtype = rcs_expkw[j].kw_type;
2608: break;
2609: }
2610: }
2611:
2612: /* unknown keyword, continue looking */
2613: if (found == 0) {
2614: c = start;
2615: continue;
2616: }
2617:
2618: /* next character has to be ':' or '$' */
2619: c += strlen(kwstr);
2620: if (*c != ':' && *c != '$') {
2621: c = start;
2622: continue;
2623: }
2624:
2625: /*
2626: * if the next character was ':' we need to look for
2627: * an '$' before the end of the line to be sure it is
2628: * in fact a keyword.
2629: */
2630: if (*c == ':') {
2631: while (*c++) {
2632: if (*c == '$' || *c == '\n')
2633: break;
2634: }
2635:
2636: if (*c != '$') {
2637: c = start;
2638: continue;
2639: }
2640: }
2641: c_offset = c - data;
2642: end = c + 1;
2643:
2644: /* start constructing the expansion */
2645: expbuf[0] = '\0';
2646:
2647: if (mode & RCS_KWEXP_NAME) {
1.5 ! ray 2648: if (strlcat(expbuf, "$", sizeof(expbuf)) >= sizeof(expbuf) ||
! 2649: strlcat(expbuf, kwstr, sizeof(expbuf)) >= sizeof(expbuf))
! 2650: errx(1, "rcs_expand_keywords: string truncated");
! 2651: if ((mode & RCS_KWEXP_VAL) &&
! 2652: strlcat(expbuf, ": ", sizeof(expbuf)) >= sizeof(expbuf))
! 2653: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2654: }
2655:
2656: /*
2657: * order matters because of RCS_KW_ID and
2658: * RCS_KW_HEADER here
2659: */
2660: if (mode & RCS_KWEXP_VAL) {
2661: if (kwtype & RCS_KW_RCSFILE) {
2662: if (!(kwtype & RCS_KW_FULLPATH))
1.5 ! ray 2663: (void)strlcat(expbuf, basename(rcsfile), sizeof(expbuf));
1.1 joris 2664: else
1.5 ! ray 2665: (void)strlcat(expbuf, rcsfile, sizeof(expbuf));
! 2666: if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
! 2667: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2668: }
2669:
2670: if (kwtype & RCS_KW_REVISION) {
1.5 ! ray 2671: rcsnum_tostr(rdp->rd_num, buf, sizeof(buf));
! 2672: if (strlcat(buf, " ", sizeof(buf)) >= sizeof(buf) ||
! 2673: strlcat(expbuf, buf, sizeof(expbuf)) >= sizeof(buf))
! 2674: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2675: }
2676:
2677: if (kwtype & RCS_KW_DATE) {
2678: if (timezone_flag != NULL)
2679: fmt = "%Y/%m/%d %H:%M:%S%z ";
2680: else
2681: fmt = "%Y/%m/%d %H:%M:%S ";
2682:
2683: strftime(buf, sizeof(buf), fmt, &tb);
1.5 ! ray 2684: if (strlcat(expbuf, buf, sizeof(expbuf)) >= sizeof(expbuf))
! 2685: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2686: }
2687:
2688: if (kwtype & RCS_KW_AUTHOR) {
1.5 ! ray 2689: if (strlcat(expbuf, rdp->rd_author, sizeof(expbuf)) >= sizeof(expbuf) ||
! 2690: strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
! 2691: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2692: }
2693:
2694: if (kwtype & RCS_KW_STATE) {
1.5 ! ray 2695: if (strlcat(expbuf, rdp->rd_state, sizeof(expbuf)) >= sizeof(expbuf) ||
! 2696: strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
! 2697: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2698: }
2699:
2700: /* order does not matter anymore below */
2701: if (kwtype & RCS_KW_LOG)
1.5 ! ray 2702: if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
! 2703: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2704:
2705: if (kwtype & RCS_KW_SOURCE) {
1.5 ! ray 2706: if (strlcat(expbuf, rcsfile, sizeof(expbuf)) >= sizeof(expbuf) ||
! 2707: strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
! 2708: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2709: }
2710:
2711: if (kwtype & RCS_KW_NAME)
1.5 ! ray 2712: if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
! 2713: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2714: }
2715:
2716: /* end the expansion */
2717: if (mode & RCS_KWEXP_NAME)
1.5 ! ray 2718: if (strlcat(expbuf, "$", sizeof(expbuf)) >= sizeof(expbuf))
! 2719: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2720:
2721: sizdiff = strlen(expbuf) - (end - start);
2722: tbuf = xstrdup(end);
2723: /* only realloc if we have to */
2724: if (sizdiff > 0) {
2725: char *newdata;
2726:
2727: len += sizdiff;
2728: newdata = xrealloc(data, 1, len);
2729: data = newdata;
2730: /*
2731: * ensure string pointers are not invalidated
2732: * after realloc()
2733: */
2734: start = data + start_offset;
2735: c = data + c_offset;
2736: }
1.5 ! ray 2737: if (strlcpy(start, expbuf, len) >= len ||
! 2738: strlcat(data, tbuf, len) >= len)
! 2739: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2740: xfree(tbuf);
2741: i += strlen(expbuf);
2742: }
2743: }
2744:
2745: return (data);
2746: }
2747:
2748: /*
2749: * rcs_deltatext_set()
2750: *
2751: * Set deltatext for <rev> in RCS file <rfp> to <dtext>
2752: * Returns -1 on error, 0 on success.
2753: */
2754: int
2755: rcs_deltatext_set(RCSFILE *rfp, RCSNUM *rev, const char *dtext)
2756: {
2757: size_t len;
2758: struct rcs_delta *rdp;
2759:
2760: /* Write operations require full parsing */
2761: rcs_parse_deltatexts(rfp, NULL);
2762:
2763: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2764: return (-1);
2765:
2766: if (rdp->rd_text != NULL)
2767: xfree(rdp->rd_text);
2768:
2769: len = strlen(dtext);
2770: if (len != 0) {
2771: /* XXX - use xstrdup() if rd_text changes to char *. */
2772: rdp->rd_text = xmalloc(len + 1);
2773: rdp->rd_tlen = len;
2774: (void)memcpy(rdp->rd_text, dtext, len + 1);
2775: } else {
2776: rdp->rd_text = NULL;
2777: rdp->rd_tlen = 0;
2778: }
2779:
2780: return (0);
2781: }
2782:
2783: /*
2784: * rcs_rev_setlog()
2785: *
2786: * Sets the log message of revision <rev> to <logtext>
2787: */
2788: int
2789: rcs_rev_setlog(RCSFILE *rfp, RCSNUM *rev, const char *logtext)
2790: {
2791: struct rcs_delta *rdp;
2792: char buf[16];
2793:
2794: rcsnum_tostr(rev, buf, sizeof(buf));
2795:
2796: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2797: return (-1);
2798:
2799: if (rdp->rd_log != NULL)
2800: xfree(rdp->rd_log);
2801:
2802: rdp->rd_log = xstrdup(logtext);
2803: rfp->rf_flags &= ~RCS_SYNCED;
2804: return (0);
2805: }
2806: /*
2807: * rcs_rev_getdate()
2808: *
2809: * Get the date corresponding to a given revision.
2810: * Returns the date on success, -1 on failure.
2811: */
2812: time_t
2813: rcs_rev_getdate(RCSFILE *rfp, RCSNUM *rev)
2814: {
2815: struct rcs_delta *rdp;
2816:
2817: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2818: return (-1);
2819:
2820: return (mktime(&rdp->rd_date));
2821: }
2822:
2823: /*
2824: * rcs_state_set()
2825: *
2826: * Sets the state of revision <rev> to <state>
2827: * NOTE: default state is 'Exp'. States may not contain spaces.
2828: *
2829: * Returns -1 on failure, 0 on success.
2830: */
2831: int
2832: rcs_state_set(RCSFILE *rfp, RCSNUM *rev, const char *state)
2833: {
2834: struct rcs_delta *rdp;
2835:
2836: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2837: return (-1);
2838:
2839: if (rdp->rd_state != NULL)
2840: xfree(rdp->rd_state);
2841:
2842: rdp->rd_state = xstrdup(state);
2843:
2844: rfp->rf_flags &= ~RCS_SYNCED;
2845:
2846: return (0);
2847: }
2848:
2849: /*
2850: * rcs_state_check()
2851: *
2852: * Check if string <state> is valid.
2853: *
2854: * Returns 0 if the string is valid, -1 otherwise.
2855: */
2856: int
2857: rcs_state_check(const char *state)
2858: {
2859: if (strchr(state, ' ') != NULL)
2860: return (-1);
2861:
2862: return (0);
2863: }
2864:
2865: /*
2866: * rcs_state_get()
2867: *
2868: * Get the state for a given revision of a specified RCSFILE.
2869: *
2870: * Returns NULL on failure.
2871: */
2872: const char *
2873: rcs_state_get(RCSFILE *rfp, RCSNUM *rev)
2874: {
2875: struct rcs_delta *rdp;
2876:
2877: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2878: return (NULL);
2879:
2880: return (rdp->rd_state);
2881: }
2882:
2883: /*
2884: * rcs_kwexp_buf()
2885: *
2886: * Do keyword expansion on a buffer if necessary
2887: *
2888: */
2889: BUF *
2890: rcs_kwexp_buf(BUF *bp, RCSFILE *rf, RCSNUM *rev)
2891: {
2892: struct rcs_delta *rdp;
2893: char *expanded, *tbuf;
2894: int expmode;
2895: size_t len;
2896:
2897: /*
2898: * Do keyword expansion if required.
2899: */
2900: if (rf->rf_expand != NULL)
2901: expmode = rcs_kwexp_get(rf);
2902: else
2903: expmode = RCS_KWEXP_DEFAULT;
2904:
2905: if (!(expmode & RCS_KWEXP_NONE)) {
2906: if ((rdp = rcs_findrev(rf, rev)) == NULL)
1.5 ! ray 2907: errx(1, "could not fetch revision");
1.1 joris 2908: rcs_buf_putc(bp, '\0');
2909: len = rcs_buf_len(bp);
2910: tbuf = rcs_buf_release(bp);
2911: expanded = rcs_expand_keywords(rf->rf_path, rdp,
2912: tbuf, len, expmode);
2913: bp = rcs_buf_alloc(len, BUF_AUTOEXT);
2914: rcs_buf_set(bp, expanded, strlen(expanded), 0);
2915: xfree(expanded);
2916: }
2917: return (bp);
2918: }