Annotation of src/usr.bin/cvs/rcs.c, Revision 1.53
1.53 ! jfb 1: /* $OpenBSD: rcs.c,v 1.52 2005/05/25 08:00:03 jfb Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
1.15 tedu 4: * All rights reserved.
1.1 jfb 5: *
1.15 tedu 6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
1.1 jfb 9: *
1.15 tedu 10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
1.1 jfb 12: * 2. The name of the author may not be used to endorse or promote products
1.15 tedu 13: * derived from this software without specific prior written permission.
1.1 jfb 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
1.15 tedu 24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1 jfb 25: */
26:
27: #include <sys/param.h>
28: #include <sys/queue.h>
29: #include <sys/stat.h>
30:
1.52 jfb 31: #include <pwd.h>
1.1 jfb 32: #include <errno.h>
33: #include <stdio.h>
34: #include <ctype.h>
1.52 jfb 35: #include <unistd.h>
1.1 jfb 36: #include <stdlib.h>
1.26 jfb 37: #include <stdarg.h>
1.1 jfb 38: #include <string.h>
39:
40: #include "rcs.h"
41: #include "log.h"
1.39 joris 42: #include "strtab.h"
1.1 jfb 43:
1.26 jfb 44: #define RCS_BUFSIZE 16384
1.18 jfb 45: #define RCS_BUFEXTSIZE 8192
1.1 jfb 46:
47:
48: /* RCS token types */
49: #define RCS_TOK_ERR -1
50: #define RCS_TOK_EOF 0
51: #define RCS_TOK_NUM 1
52: #define RCS_TOK_ID 2
53: #define RCS_TOK_STRING 3
54: #define RCS_TOK_SCOLON 4
55: #define RCS_TOK_COLON 5
56:
57:
58: #define RCS_TOK_HEAD 8
59: #define RCS_TOK_BRANCH 9
60: #define RCS_TOK_ACCESS 10
61: #define RCS_TOK_SYMBOLS 11
62: #define RCS_TOK_LOCKS 12
63: #define RCS_TOK_COMMENT 13
64: #define RCS_TOK_EXPAND 14
65: #define RCS_TOK_DATE 15
66: #define RCS_TOK_AUTHOR 16
67: #define RCS_TOK_STATE 17
68: #define RCS_TOK_NEXT 18
69: #define RCS_TOK_BRANCHES 19
70: #define RCS_TOK_DESC 20
71: #define RCS_TOK_LOG 21
72: #define RCS_TOK_TEXT 22
73: #define RCS_TOK_STRICT 23
74:
75: #define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES))
76:
77:
78: #define RCS_NOSCOL 0x01 /* no terminating semi-colon */
79: #define RCS_VOPT 0x02 /* value is optional */
80:
81:
82: /* opaque parse data */
83: struct rcs_pdata {
1.18 jfb 84: u_int rp_lines;
1.1 jfb 85:
86: char *rp_buf;
87: size_t rp_blen;
1.18 jfb 88: char *rp_bufend;
1.42 jfb 89: size_t rp_tlen;
1.1 jfb 90:
91: /* pushback token buffer */
92: char rp_ptok[128];
93: int rp_pttype; /* token type, RCS_TOK_ERR if no token */
94:
95: FILE *rp_file;
96: };
97:
98:
99: struct rcs_line {
100: char *rl_line;
101: int rl_lineno;
102: TAILQ_ENTRY(rcs_line) rl_list;
103: };
1.5 vincent 104: TAILQ_HEAD(rcs_tqh, rcs_line);
1.1 jfb 105:
106: struct rcs_foo {
107: int rl_nblines;
108: char *rl_data;
1.5 vincent 109: struct rcs_tqh rl_lines;
1.1 jfb 110: };
111:
112: #define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf
1.42 jfb 113: #define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_tlen
1.1 jfb 114:
115:
1.47 jfb 116:
117: /* invalid characters in RCS symbol names */
1.49 jfb 118: static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR;
1.47 jfb 119:
1.51 jfb 120:
121: /* comment leaders, depending on the file's suffix */
122: static const struct rcs_comment {
123: const char *rc_suffix;
124: const char *rc_cstr;
125: } rcs_comments[] = {
126: { "1", ".\\\" " },
127: { "2", ".\\\" " },
128: { "3", ".\\\" " },
129: { "4", ".\\\" " },
130: { "5", ".\\\" " },
131: { "6", ".\\\" " },
132: { "7", ".\\\" " },
133: { "8", ".\\\" " },
134: { "9", ".\\\" " },
135: { "a", "-- " }, /* Ada */
136: { "ada", "-- " },
137: { "adb", "-- " },
138: { "asm", ";; " }, /* assembler (MS-DOS) */
139: { "ads", "-- " }, /* Ada */
140: { "bat", ":: " }, /* batch (MS-DOS) */
141: { "body", "-- " }, /* Ada */
142: { "c", " * " }, /* C */
143: { "c++", "// " }, /* C++ */
144: { "cc", "// " },
145: { "cpp", "// " },
146: { "cxx", "// " },
147: { "m", "// " }, /* Objective-C */
148: { "cl", ";;; " }, /* Common Lisp */
149: { "cmd", ":: " }, /* command (OS/2) */
150: { "cmf", "c " }, /* CM Fortran */
151: { "csh", "# " }, /* shell */
152: { "e", "# " }, /* efl */
153: { "epsf", "% " }, /* encapsulated postscript */
154: { "epsi", "% " }, /* encapsulated postscript */
155: { "el", "; " }, /* Emacs Lisp */
156: { "f", "c " }, /* Fortran */
157: { "for", "c " },
158: { "h", " * " }, /* C-header */
159: { "hh", "// " }, /* C++ header */
160: { "hpp", "// " },
161: { "hxx", "// " },
162: { "in", "# " }, /* for Makefile.in */
163: { "l", " * " }, /* lex */
164: { "mac", ";; " }, /* macro (DEC-10, MS-DOS, PDP-11, VMS, etc) */
165: { "mak", "# " }, /* makefile, e.g. Visual C++ */
166: { "me", ".\\\" " }, /* me-macros t/nroff */
167: { "ml", "; " }, /* mocklisp */
168: { "mm", ".\\\" " }, /* mm-macros t/nroff */
169: { "ms", ".\\\" " }, /* ms-macros t/nroff */
170: { "man", ".\\\" " }, /* man-macros t/nroff */
171: { "p", " * " }, /* pascal */
172: { "pas", " * " },
1.52 jfb 173: { "pl", "# " }, /* Perl (conflict with Prolog) */
174: { "pm", "# " }, /* Perl module */
1.51 jfb 175: { "ps", "% " }, /* postscript */
176: { "psw", "% " }, /* postscript wrap */
177: { "pswm", "% " }, /* postscript wrap */
178: { "r", "# " }, /* ratfor */
179: { "rc", " * " }, /* Microsoft Windows resource file */
180: { "red", "% " }, /* psl/rlisp */
181: { "sh", "# " }, /* shell */
182: { "sl", "% " }, /* psl */
183: { "spec", "-- " }, /* Ada */
184: { "tex", "% " }, /* tex */
185: { "y", " * " }, /* yacc */
186: { "ye", " * " }, /* yacc-efl */
187: { "yr", " * " }, /* yacc-ratfor */
188: };
189:
190: #define NB_COMTYPES (sizeof(rcs_comments)/sizeof(rcs_comments[0]))
191:
1.33 jfb 192: #ifdef notyet
1.20 jfb 193: static struct rcs_kfl {
194: char rk_char;
195: int rk_val;
196: } rcs_kflags[] = {
197: { 'k', RCS_KWEXP_NAME },
198: { 'v', RCS_KWEXP_VAL },
199: { 'l', RCS_KWEXP_LKR },
200: { 'o', RCS_KWEXP_OLD },
201: { 'b', RCS_KWEXP_NONE },
202: };
1.33 jfb 203: #endif
1.20 jfb 204:
1.1 jfb 205: static struct rcs_key {
206: char rk_str[16];
207: int rk_id;
208: int rk_val;
209: int rk_flags;
210: } rcs_keys[] = {
211: { "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT },
1.41 jfb 212: { "author", RCS_TOK_AUTHOR, RCS_TOK_ID, 0 },
1.1 jfb 213: { "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT },
214: { "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT },
215: { "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT },
216: { "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 },
217: { "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL },
218: { "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT },
219: { "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT },
220: { "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 },
221: { "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL },
222: { "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT },
1.41 jfb 223: { "state", RCS_TOK_STATE, RCS_TOK_ID, RCS_VOPT },
1.1 jfb 224: { "strict", RCS_TOK_STRICT, 0, 0, },
225: { "symbols", RCS_TOK_SYMBOLS, 0, 0 },
226: { "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL },
227: };
228:
1.18 jfb 229: #define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0]))
1.1 jfb 230:
1.33 jfb 231: #ifdef notyet
232: /*
233: * Keyword expansion table
234: */
235: static struct rcs_kw {
236: char kw_str[16];
237: } rcs_expkw[] = {
238: { "Author" },
239: { "Date" },
240: { "Header" },
241: { "Id" },
242: { "Log" },
243: { "Name" },
244: { "RCSfile" },
245: { "Revision" },
246: { "Source" },
247: { "State" }
248: };
249: #endif
250:
1.32 jfb 251: static const char *rcs_errstrs[] = {
252: "No error",
253: "No such entry",
254: "Duplicate entry found",
255: "Bad RCS number",
1.48 jfb 256: "Invalid RCS symbol",
257: "Parse error",
1.32 jfb 258: };
259:
260: #define RCS_NERR (sizeof(rcs_errstrs)/sizeof(rcs_errstrs[0]))
261:
262:
263: int rcs_errno = RCS_ERR_NOERR;
264:
1.1 jfb 265:
1.27 jfb 266: static int rcs_write (RCSFILE *);
1.26 jfb 267: static int rcs_parse (RCSFILE *);
268: static int rcs_parse_admin (RCSFILE *);
269: static int rcs_parse_delta (RCSFILE *);
270: static int rcs_parse_deltatext (RCSFILE *);
271:
272: static int rcs_parse_access (RCSFILE *);
273: static int rcs_parse_symbols (RCSFILE *);
274: static int rcs_parse_locks (RCSFILE *);
275: static int rcs_parse_branches (RCSFILE *, struct rcs_delta *);
276: static void rcs_freedelta (struct rcs_delta *);
277: static void rcs_freepdata (struct rcs_pdata *);
278: static int rcs_gettok (RCSFILE *);
279: static int rcs_pushtok (RCSFILE *, const char *, int);
280: static int rcs_growbuf (RCSFILE *);
281: static int rcs_patch_lines (struct rcs_foo *, struct rcs_foo *);
1.42 jfb 282: static int rcs_strprint (const u_char *, size_t, FILE *);
1.26 jfb 283:
1.43 jfb 284: static struct rcs_delta* rcs_findrev (RCSFILE *, const RCSNUM *);
1.26 jfb 285: static struct rcs_foo* rcs_splitlines (const char *);
286: static void rcs_freefoo (struct rcs_foo *);
287:
288:
1.1 jfb 289: /*
290: * rcs_open()
291: *
292: * Open a file containing RCS-formatted information. The file's path is
1.26 jfb 293: * given in <path>, and the opening flags are given in <flags>, which is either
294: * RCS_READ, RCS_WRITE, or RCS_RDWR. If the open requests write access and
295: * the file does not exist, the RCS_CREATE flag must also be given, in which
296: * case it will be created with the mode specified in a third argument of
297: * type mode_t. If the file exists and RCS_CREATE is passed, the open will
298: * fail.
1.1 jfb 299: * Returns a handle to the opened file on success, or NULL on failure.
300: */
301: RCSFILE*
1.26 jfb 302: rcs_open(const char *path, int flags, ...)
1.1 jfb 303: {
1.26 jfb 304: int ret;
305: mode_t fmode;
1.1 jfb 306: RCSFILE *rfp;
307: struct stat st;
1.26 jfb 308: va_list vap;
309:
310: fmode = 0;
311: flags &= 0xffff; /* ditch any internal flags */
1.1 jfb 312:
1.26 jfb 313: if (((ret = stat(path, &st)) == -1) && (errno == ENOENT)) {
314: if (flags & RCS_CREATE) {
315: va_start(vap, flags);
316: fmode = va_arg(vap, mode_t);
317: va_end(vap);
318: } else {
1.50 jfb 319: rcs_errno = RCS_ERR_ERRNO;
1.26 jfb 320: cvs_log(LP_ERR, "RCS file `%s' does not exist", path);
321: return (NULL);
322: }
323: } else if ((ret == 0) && (flags & RCS_CREATE)) {
324: cvs_log(LP_ERR, "RCS file `%s' exists", path);
1.1 jfb 325: return (NULL);
326: }
327:
1.26 jfb 328: if ((rfp = (RCSFILE *)malloc(sizeof(*rfp))) == NULL) {
1.1 jfb 329: cvs_log(LP_ERRNO, "failed to allocate RCS file structure");
1.50 jfb 330: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 331: return (NULL);
332: }
333: memset(rfp, 0, sizeof(*rfp));
334:
1.26 jfb 335: if ((rfp->rf_path = strdup(path)) == NULL) {
1.50 jfb 336: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 337: cvs_log(LP_ERRNO, "failed to duplicate RCS file path");
1.26 jfb 338: free(rfp);
1.1 jfb 339: return (NULL);
340: }
341:
342: rfp->rf_ref = 1;
1.26 jfb 343: rfp->rf_flags = flags | RCS_SLOCK;
344: rfp->rf_mode = fmode;
1.1 jfb 345:
346: TAILQ_INIT(&(rfp->rf_delta));
1.29 jfb 347: TAILQ_INIT(&(rfp->rf_access));
1.1 jfb 348: TAILQ_INIT(&(rfp->rf_symbols));
349: TAILQ_INIT(&(rfp->rf_locks));
350:
1.26 jfb 351: if (rfp->rf_flags & RCS_CREATE) {
352: } else if (rcs_parse(rfp) < 0) {
1.1 jfb 353: rcs_close(rfp);
354: return (NULL);
355: }
356:
357: return (rfp);
358: }
359:
360: /*
361: * rcs_close()
362: *
363: * Close an RCS file handle.
364: */
365: void
366: rcs_close(RCSFILE *rfp)
367: {
368: struct rcs_delta *rdp;
1.13 jfb 369: struct rcs_lock *rlp;
370: struct rcs_sym *rsp;
1.1 jfb 371:
372: if (rfp->rf_ref > 1) {
373: rfp->rf_ref--;
374: return;
375: }
376:
1.26 jfb 377: if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED))
378: rcs_write(rfp);
379:
1.1 jfb 380: while (!TAILQ_EMPTY(&(rfp->rf_delta))) {
381: rdp = TAILQ_FIRST(&(rfp->rf_delta));
382: TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list);
383: rcs_freedelta(rdp);
384: }
385:
1.13 jfb 386: while (!TAILQ_EMPTY(&(rfp->rf_symbols))) {
387: rsp = TAILQ_FIRST(&(rfp->rf_symbols));
388: TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list);
389: rcsnum_free(rsp->rs_num);
1.39 joris 390: cvs_strfree(rsp->rs_name);
1.13 jfb 391: free(rsp);
392: }
393:
394: while (!TAILQ_EMPTY(&(rfp->rf_locks))) {
395: rlp = TAILQ_FIRST(&(rfp->rf_locks));
396: TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list);
397: rcsnum_free(rlp->rl_num);
398: free(rlp);
399: }
400:
1.1 jfb 401: if (rfp->rf_head != NULL)
402: rcsnum_free(rfp->rf_head);
1.11 joris 403: if (rfp->rf_branch != NULL)
404: rcsnum_free(rfp->rf_branch);
1.1 jfb 405:
406: if (rfp->rf_path != NULL)
407: free(rfp->rf_path);
408: if (rfp->rf_comment != NULL)
1.39 joris 409: cvs_strfree(rfp->rf_comment);
1.1 jfb 410: if (rfp->rf_expand != NULL)
1.39 joris 411: cvs_strfree(rfp->rf_expand);
1.1 jfb 412: if (rfp->rf_desc != NULL)
1.39 joris 413: cvs_strfree(rfp->rf_desc);
1.1 jfb 414: free(rfp);
415: }
416:
417: /*
418: * rcs_write()
419: *
420: * Write the contents of the RCS file handle <rfp> to disk in the file whose
421: * path is in <rf_path>.
422: * Returns 0 on success, or -1 on failure.
423: */
1.27 jfb 424: static int
1.1 jfb 425: rcs_write(RCSFILE *rfp)
426: {
427: FILE *fp;
1.42 jfb 428: char buf[1024], numbuf[64];
1.29 jfb 429: struct rcs_access *ap;
1.1 jfb 430: struct rcs_sym *symp;
1.46 jfb 431: struct rcs_branch *brp;
1.1 jfb 432: struct rcs_delta *rdp;
433:
1.28 jfb 434: if (rfp->rf_flags & RCS_SYNCED)
1.1 jfb 435: return (0);
436:
1.29 jfb 437: if ((fp = fopen(rfp->rf_path, "w")) == NULL) {
1.50 jfb 438: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 439: cvs_log(LP_ERRNO, "failed to open RCS output file `%s'",
440: rfp->rf_path);
441: return (-1);
442: }
443:
1.28 jfb 444: if (rfp->rf_head != NULL)
445: rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf));
446: else
447: numbuf[0] = '\0';
448:
1.1 jfb 449: fprintf(fp, "head\t%s;\n", numbuf);
1.35 jfb 450:
451: if (rfp->rf_branch != NULL) {
452: rcsnum_tostr(rfp->rf_branch, numbuf, sizeof(numbuf));
453: fprintf(fp, "branch\t%s;\n", numbuf);
454: }
455:
1.29 jfb 456: fputs("access", fp);
457: TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) {
458: fprintf(fp, "\n\t%s", ap->ra_name);
459: }
460: fputs(";\n", fp);
1.1 jfb 461:
462: fprintf(fp, "symbols\n");
463: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
464: rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf));
465: snprintf(buf, sizeof(buf), "%s:%s", symp->rs_name, numbuf);
466: fprintf(fp, "\t%s", buf);
467: if (symp != TAILQ_LAST(&(rfp->rf_symbols), rcs_slist))
468: fputc('\n', fp);
469: }
470: fprintf(fp, ";\n");
471:
472: fprintf(fp, "locks;");
473:
1.26 jfb 474: if (rfp->rf_flags & RCS_SLOCK)
1.1 jfb 475: fprintf(fp, " strict;");
476: fputc('\n', fp);
477:
1.42 jfb 478: if (rfp->rf_comment != NULL) {
479: fputs("comment\t@", fp);
480: rcs_strprint(rfp->rf_comment, strlen(rfp->rf_comment), fp);
481: fputs("@;\n", fp);
482: }
1.1 jfb 483:
1.42 jfb 484: if (rfp->rf_expand != NULL) {
485: fputs("expand @", fp);
486: rcs_strprint(rfp->rf_expand, strlen(rfp->rf_expand), fp);
487: fputs("@;\n", fp);
488: }
1.1 jfb 489:
1.46 jfb 490: fputs("\n\n", fp);
1.1 jfb 491:
492: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
493: fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
494: sizeof(numbuf)));
495: fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;",
1.44 jfb 496: rdp->rd_date.tm_year + 1900, rdp->rd_date.tm_mon + 1,
1.1 jfb 497: rdp->rd_date.tm_mday, rdp->rd_date.tm_hour,
498: rdp->rd_date.tm_min, rdp->rd_date.tm_sec);
499: fprintf(fp, "\tauthor %s;\tstate %s;\n",
500: rdp->rd_author, rdp->rd_state);
1.46 jfb 501: fputs("branches", fp);
502: TAILQ_FOREACH(brp, &(rdp->rd_branches), rb_list) {
503: fprintf(fp, " %s", rcsnum_tostr(brp->rb_num, numbuf,
504: sizeof(numbuf)));
505: }
506: fputs(";\n", fp);
1.1 jfb 507: fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next,
508: numbuf, sizeof(numbuf)));
509: }
510:
1.42 jfb 511: fputs("\ndesc\n@", fp);
512: if (rfp->rf_desc != NULL)
513: rcs_strprint(rfp->rf_desc, strlen(rfp->rf_desc), fp);
514: fputs("@\n\n", fp);
1.1 jfb 515:
516: /* deltatexts */
517: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
518: fprintf(fp, "\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
519: sizeof(numbuf)));
1.42 jfb 520: fputs("log\n@", fp);
521: rcs_strprint(rdp->rd_log, strlen(rdp->rd_log), fp);
522: fputs("@\ntext\n@", fp);
523: rcs_strprint(rdp->rd_text, rdp->rd_tlen, fp);
524: fputs("@\n\n", fp);
1.1 jfb 525: }
526: fclose(fp);
527:
1.26 jfb 528: rfp->rf_flags |= RCS_SYNCED;
1.1 jfb 529:
530: return (0);
531: }
532:
533: /*
1.43 jfb 534: * rcs_head_get()
535: *
536: * Retrieve the revision number of the head revision for the RCS file <file>.
537: */
538: const RCSNUM*
539: rcs_head_get(RCSFILE *file)
540: {
541: return (file->rf_head);
542: }
543:
544: /*
545: * rcs_head_set()
546: *
547: * Set the revision number of the head revision for the RCS file <file> to
548: * <rev>, which must reference a valid revision within the file.
549: */
550: int
551: rcs_head_set(RCSFILE *file, const RCSNUM *rev)
552: {
553: struct rcs_delta *rd;
554:
555: if ((rd = rcs_findrev(file, rev)) == NULL)
556: return (-1);
557:
1.52 jfb 558: if ((file->rf_head == NULL) &&
559: ((file->rf_head = rcsnum_alloc()) == NULL))
560: return (-1);
561:
1.43 jfb 562: if (rcsnum_cpy(rev, file->rf_head, 0) < 0)
563: return (-1);
564:
565: return (0);
566: }
567:
568:
569: /*
1.35 jfb 570: * rcs_branch_get()
571: *
572: * Retrieve the default branch number for the RCS file <file>.
573: * Returns the number on success. If NULL is returned, then there is no
574: * default branch for this file.
575: */
576: const RCSNUM*
577: rcs_branch_get(RCSFILE *file)
578: {
579: return (file->rf_branch);
580: }
581:
582: /*
583: * rcs_branch_set()
584: *
585: * Set the default branch for the RCS file <file> to <bnum>.
586: * Returns 0 on success, -1 on failure.
587: */
588: int
589: rcs_branch_set(RCSFILE *file, const RCSNUM *bnum)
590: {
591: if ((file->rf_branch == NULL) &&
592: ((file->rf_branch = rcsnum_alloc()) == NULL))
593: return (-1);
594:
595: if (rcsnum_cpy(bnum, file->rf_branch, 0) < 0) {
596: rcsnum_free(file->rf_branch);
597: file->rf_branch = NULL;
598: return (-1);
599: }
600:
601: return (0);
602: }
603:
604: /*
1.29 jfb 605: * rcs_access_add()
606: *
607: * Add the login name <login> to the access list for the RCS file <file>.
608: * Returns 0 on success, or -1 on failure.
609: */
610: int
611: rcs_access_add(RCSFILE *file, const char *login)
612: {
613: struct rcs_access *ap;
614:
615: /* first look for duplication */
616: TAILQ_FOREACH(ap, &(file->rf_access), ra_list) {
617: if (strcmp(ap->ra_name, login) == 0) {
1.32 jfb 618: rcs_errno = RCS_ERR_DUPENT;
1.29 jfb 619: return (-1);
620: }
621: }
622:
623: ap = (struct rcs_access *)malloc(sizeof(*ap));
624: if (ap == NULL) {
1.50 jfb 625: rcs_errno = RCS_ERR_ERRNO;
1.29 jfb 626: cvs_log(LP_ERRNO, "failed to allocate RCS access entry");
627: return (-1);
628: }
629:
1.39 joris 630: ap->ra_name = cvs_strdup(login);
1.29 jfb 631: if (ap->ra_name == NULL) {
632: cvs_log(LP_ERRNO, "failed to duplicate user name");
633: free(ap);
634: return (-1);
635: }
636:
637: TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list);
638:
639: /* not synced anymore */
640: file->rf_flags &= ~RCS_SYNCED;
641: return (0);
642: }
643:
644: /*
645: * rcs_access_remove()
646: *
647: * Remove an entry with login name <login> from the access list of the RCS
648: * file <file>.
649: * Returns 0 on success, or -1 on failure.
650: */
651: int
652: rcs_access_remove(RCSFILE *file, const char *login)
653: {
654: struct rcs_access *ap;
655:
656: TAILQ_FOREACH(ap, &(file->rf_access), ra_list)
657: if (strcmp(ap->ra_name, login) == 0)
658: break;
659:
660: if (ap == NULL) {
1.32 jfb 661: rcs_errno = RCS_ERR_NOENT;
1.29 jfb 662: return (-1);
663: }
664:
665: TAILQ_REMOVE(&(file->rf_access), ap, ra_list);
1.39 joris 666: cvs_strfree(ap->ra_name);
1.29 jfb 667: free(ap);
668:
669: /* not synced anymore */
670: file->rf_flags &= ~RCS_SYNCED;
671: return (0);
672: }
673:
674: /*
1.26 jfb 675: * rcs_sym_add()
1.1 jfb 676: *
677: * Add a symbol to the list of symbols for the RCS file <rfp>. The new symbol
678: * is named <sym> and is bound to the RCS revision <snum>.
679: * Returns 0 on success, or -1 on failure.
680: */
681: int
1.26 jfb 682: rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum)
1.1 jfb 683: {
684: struct rcs_sym *symp;
685:
1.47 jfb 686: if (!rcs_sym_check(sym)) {
687: rcs_errno = RCS_ERR_BADSYM;
688: return (NULL);
689: }
690:
1.1 jfb 691: /* first look for duplication */
692: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
693: if (strcmp(symp->rs_name, sym) == 0) {
1.32 jfb 694: rcs_errno = RCS_ERR_DUPENT;
1.1 jfb 695: return (-1);
696: }
697: }
698:
1.50 jfb 699: if ((symp = (struct rcs_sym *)malloc(sizeof(*symp))) == NULL) {
700: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 701: cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
702: return (-1);
703: }
704:
1.50 jfb 705: if ((symp->rs_name = cvs_strdup(sym)) == NULL) {
706: rcs_errno = RCS_ERR_ERRNO;
1.10 joris 707: cvs_log(LP_ERRNO, "failed to duplicate symbol");
708: free(symp);
709: return (-1);
710: }
711:
1.50 jfb 712: if ((symp->rs_num = rcsnum_alloc()) == NULL) {
1.39 joris 713: cvs_strfree(symp->rs_name);
1.11 joris 714: free(symp);
715: return (-1);
716: }
1.1 jfb 717: rcsnum_cpy(snum, symp->rs_num, 0);
718:
719: TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
720:
721: /* not synced anymore */
1.26 jfb 722: rfp->rf_flags &= ~RCS_SYNCED;
1.1 jfb 723: return (0);
724: }
725:
726: /*
1.27 jfb 727: * rcs_sym_remove()
728: *
729: * Remove the symbol with name <sym> from the symbol list for the RCS file
730: * <file>. If no such symbol is found, the call fails and returns with an
731: * error.
732: * Returns 0 on success, or -1 on failure.
733: */
734: int
735: rcs_sym_remove(RCSFILE *file, const char *sym)
736: {
737: struct rcs_sym *symp;
738:
1.47 jfb 739: if (!rcs_sym_check(sym)) {
740: rcs_errno = RCS_ERR_BADSYM;
741: return (NULL);
742: }
743:
1.27 jfb 744: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
745: if (strcmp(symp->rs_name, sym) == 0)
746: break;
747:
748: if (symp == NULL) {
1.32 jfb 749: rcs_errno = RCS_ERR_NOENT;
1.27 jfb 750: return (-1);
751: }
752:
753: TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list);
1.39 joris 754: cvs_strfree(symp->rs_name);
1.27 jfb 755: rcsnum_free(symp->rs_num);
756: free(symp);
757:
758: /* not synced anymore */
759: file->rf_flags &= ~RCS_SYNCED;
760: return (0);
761: }
762:
763: /*
764: * rcs_sym_getrev()
765: *
766: * Retrieve the RCS revision number associated with the symbol <sym> for the
767: * RCS file <file>. The returned value is a dynamically-allocated copy and
768: * should be freed by the caller once they are done with it.
769: * Returns the RCSNUM on success, or NULL on failure.
770: */
771: RCSNUM*
772: rcs_sym_getrev(RCSFILE *file, const char *sym)
773: {
774: RCSNUM *num;
775: struct rcs_sym *symp;
776:
1.47 jfb 777: if (!rcs_sym_check(sym)) {
778: rcs_errno = RCS_ERR_BADSYM;
779: return (NULL);
780: }
781:
1.27 jfb 782: num = NULL;
783: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
784: if (strcmp(symp->rs_name, sym) == 0)
785: break;
786:
1.36 jfb 787: if (symp == NULL)
788: rcs_errno = RCS_ERR_NOENT;
789: else if (((num = rcsnum_alloc()) != NULL) &&
1.27 jfb 790: (rcsnum_cpy(symp->rs_num, num, 0) < 0)) {
791: rcsnum_free(num);
792: num = NULL;
793: }
794:
795: return (num);
1.47 jfb 796: }
797:
798: /*
799: * rcs_sym_check()
800: *
801: * Check the RCS symbol name <sym> for any unsupported characters.
802: * Returns 1 if the tag is correct, 0 if it isn't valid.
803: */
804: int
805: rcs_sym_check(const char *sym)
806: {
807: int ret;
808: const char *cp;
809:
810: ret = 1;
811: cp = sym;
812: if (!isalpha(*cp++))
813: return (0);
814:
815: for (; *cp != '\0'; cp++)
816: if (!isgraph(*cp) || (strchr(rcs_sym_invch, *cp) != NULL)) {
817: ret = 0;
818: break;
819: }
820:
821: return (ret);
1.30 jfb 822: }
823:
824: /*
825: * rcs_lock_getmode()
826: *
827: * Retrieve the locking mode of the RCS file <file>.
828: */
829: int
830: rcs_lock_getmode(RCSFILE *file)
831: {
832: return (file->rf_flags & RCS_SLOCK) ? RCS_LOCK_STRICT : RCS_LOCK_LOOSE;
833: }
834:
835: /*
836: * rcs_lock_setmode()
837: *
838: * Set the locking mode of the RCS file <file> to <mode>, which must either
839: * be RCS_LOCK_LOOSE or RCS_LOCK_STRICT.
840: * Returns the previous mode on success, or -1 on failure.
841: */
842: int
843: rcs_lock_setmode(RCSFILE *file, int mode)
844: {
845: int pmode;
846: pmode = rcs_lock_getmode(file);
847:
848: if (mode == RCS_LOCK_STRICT)
849: file->rf_flags |= RCS_SLOCK;
850: else if (mode == RCS_LOCK_LOOSE)
851: file->rf_flags &= ~RCS_SLOCK;
852: else {
853: cvs_log(LP_ERRNO, "invalid lock mode %d", mode);
854: return (-1);
855: }
856:
857: return (pmode);
1.27 jfb 858: }
859:
860: /*
1.40 jfb 861: * rcs_lock_add()
862: *
863: * Add an RCS lock for the user <user> on revision <rev>.
864: * Returns 0 on success, or -1 on failure.
865: */
866: int
867: rcs_lock_add(RCSFILE *file, const char *user, RCSNUM *rev)
868: {
869: struct rcs_lock *lkp;
870:
871: /* first look for duplication */
872: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
873: if (strcmp(lkp->rl_name, user) == 0) {
874: rcs_errno = RCS_ERR_DUPENT;
875: return (-1);
876: }
877: }
878:
1.50 jfb 879: if ((lkp = (struct rcs_lock *)malloc(sizeof(*lkp))) == NULL) {
880: rcs_errno = RCS_ERR_ERRNO;
1.40 jfb 881: cvs_log(LP_ERRNO, "failed to allocate RCS lock");
882: return (-1);
883: }
884:
885: lkp->rl_name = cvs_strdup(user);
886: if (lkp->rl_name == NULL) {
887: cvs_log(LP_ERRNO, "failed to duplicate user name");
888: free(lkp);
889: return (-1);
890: }
891:
892: TAILQ_INSERT_TAIL(&(file->rf_locks), lkp, rl_list);
893:
894: /* not synced anymore */
895: file->rf_flags &= ~RCS_SYNCED;
896: return (0);
897:
898:
899: }
900:
901:
902: /*
903: * rcs_lock_remove()
904: *
905: * Remove the RCS lock on revision <rev>.
906: * Returns 0 on success, or -1 on failure.
907: */
908: int
909: rcs_lock_remove(RCSFILE *file, const RCSNUM *rev)
910: {
911: struct rcs_lock *lkp;
912:
913: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list)
914: if (rcsnum_cmp(lkp->rl_num, rev, 0) == 0)
915: break;
916:
917: if (lkp == NULL) {
918: rcs_errno = RCS_ERR_NOENT;
919: return (-1);
920: }
921:
922: TAILQ_REMOVE(&(file->rf_locks), lkp, rl_list);
923: rcsnum_free(lkp->rl_num);
924: cvs_strfree(lkp->rl_name);
925: free(lkp);
926:
927: /* not synced anymore */
928: file->rf_flags &= ~RCS_SYNCED;
929: return (0);
930: }
931:
932: /*
1.27 jfb 933: * rcs_desc_get()
934: *
935: * Retrieve the description for the RCS file <file>.
936: */
937: const char*
938: rcs_desc_get(RCSFILE *file)
939: {
940: return (file->rf_desc);
941: }
942:
943: /*
944: * rcs_desc_set()
945: *
946: * Set the description for the RCS file <file>.
947: * Returns 0 on success, or -1 on failure.
948: */
949: int
950: rcs_desc_set(RCSFILE *file, const char *desc)
951: {
952: char *tmp;
953:
1.39 joris 954: if ((tmp = cvs_strdup(desc)) == NULL)
1.27 jfb 955: return (-1);
956:
957: if (file->rf_desc != NULL)
1.39 joris 958: cvs_strfree(file->rf_desc);
1.27 jfb 959: file->rf_desc = tmp;
960: file->rf_flags &= ~RCS_SYNCED;
961:
962: return (0);
1.51 jfb 963: }
964:
965: /*
966: * rcs_comment_lookup()
967: *
968: * Lookup the assumed comment leader based on a file's suffix.
969: * Returns a pointer to the string on success, or NULL on failure.
970: */
971: const char*
972: rcs_comment_lookup(const char *filename)
973: {
974: int i;
975: const char *sp;
976:
977: if ((sp = strrchr(filename, '.')) == NULL) {
978: rcs_errno = RCS_ERR_NOENT;
979: return (NULL);
980: }
981: sp++;
982:
983: for (i = 0; i < (int)NB_COMTYPES; i++)
984: if (strcmp(rcs_comments[i].rc_suffix, sp) == 0)
985: return (rcs_comments[i].rc_cstr);
986: return (NULL);
1.27 jfb 987: }
988:
1.33 jfb 989: /*
990: * rcs_comment_get()
991: *
992: * Retrieve the comment leader for the RCS file <file>.
993: */
994: const char*
995: rcs_comment_get(RCSFILE *file)
996: {
997: return (file->rf_comment);
998: }
999:
1000: /*
1001: * rcs_comment_set()
1002: *
1003: * Set the comment leader for the RCS file <file>.
1004: * Returns 0 on success, or -1 on failure.
1005: */
1006: int
1007: rcs_comment_set(RCSFILE *file, const char *comment)
1008: {
1009: char *tmp;
1010:
1.39 joris 1011: if ((tmp = cvs_strdup(comment)) == NULL)
1.33 jfb 1012: return (-1);
1013:
1014: if (file->rf_comment != NULL)
1.39 joris 1015: cvs_strfree(file->rf_comment);
1.33 jfb 1016: file->rf_comment = tmp;
1017: file->rf_flags &= ~RCS_SYNCED;
1018:
1019: return (0);
1020: }
1.40 jfb 1021:
1022: /*
1023: * rcs_tag_resolve()
1024: *
1025: * Retrieve the revision number corresponding to the tag <tag> for the RCS
1026: * file <file>.
1027: */
1028: RCSNUM*
1029: rcs_tag_resolve(RCSFILE *file, const char *tag)
1030: {
1031: RCSNUM *num;
1032:
1033: if ((num = rcsnum_parse(tag)) == NULL) {
1034: num = rcs_sym_getrev(file, tag);
1035: }
1036:
1037: return (num);
1038: }
1039:
1.27 jfb 1040:
1041: /*
1.1 jfb 1042: * rcs_patch()
1043: *
1044: * Apply an RCS-format patch pointed to by <patch> to the file contents
1045: * found in <data>.
1046: * Returns 0 on success, or -1 on failure.
1047: */
1048: BUF*
1049: rcs_patch(const char *data, const char *patch)
1050: {
1.5 vincent 1051: struct rcs_foo *dlines, *plines;
1052: struct rcs_line *lp;
1.1 jfb 1053: size_t len;
1.5 vincent 1054: int lineno;
1.1 jfb 1055: BUF *res;
1056:
1057: len = strlen(data);
1058: res = cvs_buf_alloc(len, BUF_AUTOEXT);
1059: if (res == NULL)
1060: return (NULL);
1061:
1062: dlines = rcs_splitlines(data);
1.17 jfb 1063: if (dlines == NULL) {
1064: cvs_buf_free(res);
1.1 jfb 1065: return (NULL);
1.17 jfb 1066: }
1.5 vincent 1067:
1.1 jfb 1068: plines = rcs_splitlines(patch);
1.5 vincent 1069: if (plines == NULL) {
1.17 jfb 1070: cvs_buf_free(res);
1.5 vincent 1071: rcs_freefoo(dlines);
1.1 jfb 1072: return (NULL);
1.5 vincent 1073: }
1074:
1075: if (rcs_patch_lines(dlines, plines) < 0) {
1.17 jfb 1076: cvs_buf_free(res);
1.5 vincent 1077: rcs_freefoo(plines);
1078: rcs_freefoo(dlines);
1079: return (NULL);
1080: }
1081:
1082: lineno = 0;
1083: TAILQ_FOREACH(lp, &dlines->rl_lines, rl_list) {
1084: if (lineno != 0)
1085: cvs_buf_fappend(res, "%s\n", lp->rl_line);
1086: lineno++;
1087: }
1088:
1089: rcs_freefoo(dlines);
1090: rcs_freefoo(plines);
1091: return (res);
1092: }
1093:
1.7 jfb 1094: static int
1.5 vincent 1095: rcs_patch_lines(struct rcs_foo *dlines, struct rcs_foo *plines)
1096: {
1097: char op, *ep;
1098: struct rcs_line *lp, *dlp, *ndlp;
1099: int i, lineno, nbln;
1.1 jfb 1100:
1101: dlp = TAILQ_FIRST(&(dlines->rl_lines));
1102: lp = TAILQ_FIRST(&(plines->rl_lines));
1103:
1104: /* skip first bogus line */
1105: for (lp = TAILQ_NEXT(lp, rl_list); lp != NULL;
1106: lp = TAILQ_NEXT(lp, rl_list)) {
1107: op = *(lp->rl_line);
1108: lineno = (int)strtol((lp->rl_line + 1), &ep, 10);
1109: if ((lineno > dlines->rl_nblines) || (lineno <= 0) ||
1110: (*ep != ' ')) {
1111: cvs_log(LP_ERR,
1112: "invalid line specification in RCS patch");
1113: return (NULL);
1114: }
1115: ep++;
1116: nbln = (int)strtol(ep, &ep, 10);
1117: if ((nbln <= 0) || (*ep != '\0')) {
1118: cvs_log(LP_ERR,
1119: "invalid line number specification in RCS patch");
1120: return (NULL);
1121: }
1122:
1123: /* find the appropriate line */
1124: for (;;) {
1125: if (dlp == NULL)
1126: break;
1127: if (dlp->rl_lineno == lineno)
1128: break;
1129: if (dlp->rl_lineno > lineno) {
1130: dlp = TAILQ_PREV(dlp, rcs_tqh, rl_list);
1.14 deraadt 1131: } else if (dlp->rl_lineno < lineno) {
1.1 jfb 1132: ndlp = TAILQ_NEXT(dlp, rl_list);
1133: if (ndlp->rl_lineno > lineno)
1134: break;
1135: dlp = ndlp;
1136: }
1137: }
1138: if (dlp == NULL) {
1139: cvs_log(LP_ERR,
1140: "can't find referenced line in RCS patch");
1141: return (NULL);
1142: }
1143:
1144: if (op == 'd') {
1145: for (i = 0; (i < nbln) && (dlp != NULL); i++) {
1146: ndlp = TAILQ_NEXT(dlp, rl_list);
1147: TAILQ_REMOVE(&(dlines->rl_lines), dlp, rl_list);
1148: dlp = ndlp;
1149: }
1.14 deraadt 1150: } else if (op == 'a') {
1.1 jfb 1151: for (i = 0; i < nbln; i++) {
1152: ndlp = lp;
1153: lp = TAILQ_NEXT(lp, rl_list);
1154: if (lp == NULL) {
1155: cvs_log(LP_ERR, "truncated RCS patch");
1.5 vincent 1156: return (-1);
1.1 jfb 1157: }
1158: TAILQ_REMOVE(&(plines->rl_lines), lp, rl_list);
1159: TAILQ_INSERT_AFTER(&(dlines->rl_lines), dlp,
1160: lp, rl_list);
1161: dlp = lp;
1162:
1163: /* we don't want lookup to block on those */
1164: lp->rl_lineno = lineno;
1165:
1166: lp = ndlp;
1167: }
1.14 deraadt 1168: } else {
1.1 jfb 1169: cvs_log(LP_ERR, "unknown RCS patch operation `%c'", op);
1.5 vincent 1170: return (-1);
1.1 jfb 1171: }
1172:
1173: /* last line of the patch, done */
1174: if (lp->rl_lineno == plines->rl_nblines)
1175: break;
1176: }
1177:
1178: /* once we're done patching, rebuild the line numbers */
1.2 vincent 1179: lineno = 0;
1.5 vincent 1180: TAILQ_FOREACH(lp, &(dlines->rl_lines), rl_list)
1.1 jfb 1181: lp->rl_lineno = lineno++;
1182: dlines->rl_nblines = lineno - 1;
1183:
1.5 vincent 1184: return (0);
1.1 jfb 1185: }
1186:
1187: /*
1188: * rcs_getrev()
1189: *
1190: * Get the whole contents of revision <rev> from the RCSFILE <rfp>. The
1.4 vincent 1191: * returned buffer is dynamically allocated and should be released using
1192: * cvs_buf_free() once the caller is done using it.
1.1 jfb 1193: */
1194: BUF*
1195: rcs_getrev(RCSFILE *rfp, RCSNUM *rev)
1196: {
1197: int res;
1198: size_t len;
1199: void *bp;
1200: RCSNUM *crev;
1201: BUF *rbuf;
1202: struct rcs_delta *rdp = NULL;
1203:
1.28 jfb 1204: if (rfp->rf_head == NULL)
1205: return (NULL);
1206:
1.1 jfb 1207: res = rcsnum_cmp(rfp->rf_head, rev, 0);
1208: if (res == 1) {
1.32 jfb 1209: rcs_errno = RCS_ERR_NOENT;
1.1 jfb 1210: return (NULL);
1.26 jfb 1211: }
1212:
1213: rdp = rcs_findrev(rfp, rfp->rf_head);
1214: if (rdp == NULL) {
1215: cvs_log(LP_ERR, "failed to get RCS HEAD revision");
1216: return (NULL);
1217: }
1218:
1.45 jfb 1219: len = rdp->rd_tlen;
1.26 jfb 1220: if ((rbuf = cvs_buf_alloc(len, BUF_AUTOEXT)) == NULL)
1221: return (NULL);
1222:
1223: cvs_buf_append(rbuf, rdp->rd_text, len);
1224:
1225: if (res != 0) {
1226: /* Apply patches backwards to get the right version.
1227: * This will need some rework to support sub branches.
1228: */
1229: if ((crev = rcsnum_alloc()) == NULL) {
1230: cvs_buf_free(rbuf);
1.1 jfb 1231: return (NULL);
1232: }
1.26 jfb 1233: rcsnum_cpy(rfp->rf_head, crev, 0);
1234: do {
1235: crev->rn_id[crev->rn_len - 1]--;
1236: rdp = rcs_findrev(rfp, crev);
1237: if (rdp == NULL) {
1238: rcsnum_free(crev);
1239: cvs_buf_free(rbuf);
1240: return (NULL);
1241: }
1.1 jfb 1242:
1.26 jfb 1243: if (cvs_buf_putc(rbuf, '\0') < 0) {
1244: rcsnum_free(crev);
1.17 jfb 1245: cvs_buf_free(rbuf);
1.11 joris 1246: return (NULL);
1.17 jfb 1247: }
1.26 jfb 1248: bp = cvs_buf_release(rbuf);
1.45 jfb 1249: rbuf = rcs_patch((char *)bp, (char *)rdp->rd_text);
1.26 jfb 1250: if (rbuf == NULL)
1251: break;
1252: } while (rcsnum_cmp(crev, rev, 0) != 0);
1.1 jfb 1253:
1.26 jfb 1254: rcsnum_free(crev);
1.1 jfb 1255: }
1256:
1257: return (rbuf);
1.16 jfb 1258: }
1259:
1260: /*
1261: * rcs_gethead()
1262: *
1263: * Get the head revision for the RCS file <rf>.
1264: */
1265: BUF*
1266: rcs_gethead(RCSFILE *rf)
1267: {
1268: return rcs_getrev(rf, rf->rf_head);
1.1 jfb 1269: }
1270:
1271: /*
1272: * rcs_getrevbydate()
1273: *
1274: * Get an RCS revision by a specific date.
1275: */
1276: RCSNUM*
1277: rcs_getrevbydate(RCSFILE *rfp, struct tm *date)
1278: {
1279: return (NULL);
1280: }
1281:
1282: /*
1.52 jfb 1283: * rcs_rev_add()
1284: *
1.53 ! jfb 1285: * Add a revision to the RCS file <rf>. The new revision's number can be
! 1286: * specified in <rev> (which can also be RCS_HEAD_REV, in which case the
! 1287: * new revision will have a number equal to the previous head revision plus
! 1288: * one). The <msg> argument specifies the log message for that revision, and
! 1289: * <date> specifies the revision's date (a value of -1 is
! 1290: * equivalent to using the current time).
1.52 jfb 1291: * Returns 0 on success, or -1 on failure.
1292: */
1293: int
1.53 ! jfb 1294: rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date)
1.52 jfb 1295: {
1296: time_t now;
1297: struct passwd *pw;
1298: struct rcs_delta *rdp;
1299:
1300: if (rev == RCS_HEAD_REV) {
1301: } else if ((rdp = rcs_findrev(rf, rev)) != NULL) {
1302: rcs_errno = RCS_ERR_DUPENT;
1303: return (-1);
1304: }
1305:
1306: if ((pw = getpwuid(getuid())) == NULL) {
1307: rcs_errno = RCS_ERR_ERRNO;
1308: return (-1);
1309: }
1310:
1311: if ((rdp = (struct rcs_delta *)malloc(sizeof(*rdp))) == NULL) {
1312: rcs_errno = RCS_ERR_ERRNO;
1313: return (-1);
1314: }
1315: memset(rdp, 0, sizeof(*rdp));
1316:
1317: TAILQ_INIT(&(rdp->rd_branches));
1318: TAILQ_INIT(&(rdp->rd_snodes));
1319:
1320: if ((rdp->rd_num = rcsnum_alloc()) == NULL) {
1321: rcs_freedelta(rdp);
1322: return (-1);
1323: }
1324: rcsnum_cpy(rev, rdp->rd_num, 0);
1325:
1326: if ((rdp->rd_author = cvs_strdup(pw->pw_name)) == NULL) {
1327: rcs_freedelta(rdp);
1328: return (-1);
1329: }
1330:
1331: if ((rdp->rd_state = cvs_strdup(RCS_STATE_EXP)) == NULL) {
1332: rcs_freedelta(rdp);
1333: return (-1);
1334: }
1335:
1336: if ((rdp->rd_log = cvs_strdup(msg)) == NULL) {
1337: rcs_errno = RCS_ERR_ERRNO;
1338: rcs_freedelta(rdp);
1339: return (-1);
1340: }
1341:
1.53 ! jfb 1342: if (date != (time_t)(-1))
! 1343: now = date;
! 1344: else
! 1345: time(&now);
1.52 jfb 1346: gmtime_r(&now, &(rdp->rd_date));
1347:
1348: TAILQ_INSERT_HEAD(&(rf->rf_delta), rdp, rd_list);
1349: rf->rf_ndelta++;
1350:
1351: return (0);
1352: }
1353:
1354: /*
1355: * rcs_rev_remove()
1356: *
1357: * Remove the revision whose number is <rev> from the RCS file <rf>.
1358: */
1359: int
1360: rcs_rev_remove(RCSFILE *rf, RCSNUM *rev)
1361: {
1362: int ret;
1363: struct rcs_delta *rdp;
1364:
1365: ret = 0;
1366: if (rev == RCS_HEAD_REV)
1367: rev = rf->rf_head;
1368:
1369: /* do we actually have that revision? */
1370: if ((rdp = rcs_findrev(rf, rev)) == NULL) {
1371: rcs_errno = RCS_ERR_NOENT;
1372: ret = -1;
1373: } else {
1374: /* XXX assumes it's not a sub node */
1375: TAILQ_REMOVE(&(rf->rf_delta), rdp, rd_list);
1376: rf->rf_ndelta--;
1377: rf->rf_flags &= ~RCS_SYNCED;
1378: }
1379:
1380: return (ret);
1381:
1382: }
1383:
1384: /*
1.1 jfb 1385: * rcs_findrev()
1386: *
1387: * Find a specific revision's delta entry in the tree of the RCS file <rfp>.
1388: * The revision number is given in <rev>.
1389: * Returns a pointer to the delta on success, or NULL on failure.
1390: */
1391: static struct rcs_delta*
1.43 jfb 1392: rcs_findrev(RCSFILE *rfp, const RCSNUM *rev)
1.1 jfb 1393: {
1394: u_int cmplen;
1395: struct rcs_delta *rdp;
1396: struct rcs_dlist *hp;
1.6 vincent 1397: int found;
1.26 jfb 1398:
1.1 jfb 1399: cmplen = 2;
1400: hp = &(rfp->rf_delta);
1401:
1.6 vincent 1402: do {
1403: found = 0;
1404: TAILQ_FOREACH(rdp, hp, rd_list) {
1405: if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0) {
1406: if (cmplen == rev->rn_len)
1407: return (rdp);
1.1 jfb 1408:
1.6 vincent 1409: hp = &(rdp->rd_snodes);
1410: cmplen += 2;
1411: found = 1;
1412: break;
1413: }
1.1 jfb 1414: }
1.6 vincent 1415: } while (found && cmplen < rev->rn_len);
1.1 jfb 1416:
1417: return (NULL);
1.20 jfb 1418: }
1419:
1420: /*
1.26 jfb 1421: * rcs_kwexp_set()
1422: *
1423: * Set the keyword expansion mode to use on the RCS file <file> to <mode>.
1424: * Returns 0 on success, or -1 on failure.
1425: */
1426: int
1427: rcs_kwexp_set(RCSFILE *file, int mode)
1428: {
1429: int i;
1430: char *tmp, buf[8] = "";
1431:
1432: if (RCS_KWEXP_INVAL(mode))
1433: return (-1);
1434:
1435: i = 0;
1436: if (mode == RCS_KWEXP_NONE)
1437: buf[0] = 'b';
1438: else if (mode == RCS_KWEXP_OLD)
1439: buf[0] = 'o';
1440: else {
1441: if (mode & RCS_KWEXP_NAME)
1442: buf[i++] = 'k';
1443: if (mode & RCS_KWEXP_VAL)
1444: buf[i++] = 'v';
1445: if (mode & RCS_KWEXP_LKR)
1446: buf[i++] = 'l';
1447: }
1448:
1.39 joris 1449: if ((tmp = cvs_strdup(buf)) == NULL) {
1.26 jfb 1450: cvs_log(LP_ERRNO, "%s: failed to copy expansion mode",
1451: file->rf_path);
1452: return (-1);
1453: }
1454:
1.27 jfb 1455: if (file->rf_expand != NULL)
1.39 joris 1456: cvs_strfree(file->rf_expand);
1.26 jfb 1457: file->rf_expand = tmp;
1458:
1459: return (0);
1460: }
1461:
1462: /*
1463: * rcs_kwexp_get()
1464: *
1465: * Retrieve the keyword expansion mode to be used for the RCS file <file>.
1466: */
1467: int
1468: rcs_kwexp_get(RCSFILE *file)
1469: {
1470: return rcs_kflag_get(file->rf_expand);
1471: }
1472:
1473: /*
1.20 jfb 1474: * rcs_kflag_get()
1475: *
1476: * Get the keyword expansion mode from a set of character flags given in
1477: * <flags> and return the appropriate flag mask. In case of an error, the
1478: * returned mask will have the RCS_KWEXP_ERR bit set to 1.
1479: */
1480: int
1481: rcs_kflag_get(const char *flags)
1482: {
1483: int fl;
1484: size_t len;
1485: const char *fp;
1486:
1487: fl = 0;
1488: len = strlen(flags);
1489:
1490: for (fp = flags; *fp != '\0'; fp++) {
1491: if (*fp == 'k')
1492: fl |= RCS_KWEXP_NAME;
1493: else if (*fp == 'v')
1494: fl |= RCS_KWEXP_VAL;
1495: else if (*fp == 'l')
1496: fl |= RCS_KWEXP_LKR;
1497: else if (*fp == 'o') {
1498: if (len != 1)
1499: fl |= RCS_KWEXP_ERR;
1500: fl |= RCS_KWEXP_OLD;
1501: } else if (*fp == 'b') {
1502: if (len != 1)
1503: fl |= RCS_KWEXP_ERR;
1504: } else /* unknown letter */
1505: fl |= RCS_KWEXP_ERR;
1506: }
1507:
1508: return (fl);
1.32 jfb 1509: }
1510:
1511: /*
1512: * rcs_errstr()
1513: *
1514: * Get the error string matching the RCS error code <code>.
1515: */
1516: const char*
1517: rcs_errstr(int code)
1518: {
1.50 jfb 1519: const char *esp;
1520:
1521: if ((code < 0) || ((code >= (int)RCS_NERR) && (code != RCS_ERR_ERRNO)))
1522: esp = NULL;
1523: else if (code == RCS_ERR_ERRNO)
1524: esp = strerror(errno);
1525: else
1526: esp = rcs_errstrs[code];
1527: return (esp);
1.1 jfb 1528: }
1529:
1.21 jfb 1530: void
1531: rcs_kflag_usage(void)
1532: {
1533: fprintf(stderr, "Valid expansion modes include:\n"
1.22 jfb 1534: "\t-kkv\tGenerate keywords using the default form.\n"
1535: "\t-kkvl\tLike -kkv, except locker's name inserted.\n"
1536: "\t-kk\tGenerate only keyword names in keyword strings.\n"
1537: "\t-kv\tGenerate only keyword values in keyword strings.\n"
1538: "\t-ko\tGenerate old keyword string "
1.21 jfb 1539: "(no changes from checked in file).\n"
1.22 jfb 1540: "\t-kb\tGenerate binary file unmodified (merges not allowed).\n");
1.21 jfb 1541: }
1.1 jfb 1542:
1543: /*
1544: * rcs_parse()
1545: *
1546: * Parse the contents of file <path>, which are in the RCS format.
1547: * Returns 0 on success, or -1 on failure.
1548: */
1.26 jfb 1549: static int
1.1 jfb 1550: rcs_parse(RCSFILE *rfp)
1551: {
1552: int ret;
1553: struct rcs_pdata *pdp;
1554:
1.26 jfb 1555: if (rfp->rf_flags & RCS_PARSED)
1.1 jfb 1556: return (0);
1557:
1.26 jfb 1558: if ((pdp = (struct rcs_pdata *)malloc(sizeof(*pdp))) == NULL) {
1.50 jfb 1559: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1560: cvs_log(LP_ERRNO, "failed to allocate RCS parser data");
1561: return (-1);
1562: }
1563: memset(pdp, 0, sizeof(*pdp));
1564:
1.18 jfb 1565: pdp->rp_lines = 0;
1.1 jfb 1566: pdp->rp_pttype = RCS_TOK_ERR;
1567:
1568: pdp->rp_file = fopen(rfp->rf_path, "r");
1569: if (pdp->rp_file == NULL) {
1.50 jfb 1570: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1571: cvs_log(LP_ERRNO, "failed to open RCS file `%s'", rfp->rf_path);
1572: rcs_freepdata(pdp);
1573: return (-1);
1574: }
1575:
1576: pdp->rp_buf = (char *)malloc(RCS_BUFSIZE);
1577: if (pdp->rp_buf == NULL) {
1.50 jfb 1578: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1579: cvs_log(LP_ERRNO, "failed to allocate RCS parser buffer");
1580: rcs_freepdata(pdp);
1581: return (-1);
1582: }
1583: pdp->rp_blen = RCS_BUFSIZE;
1.18 jfb 1584: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
1.1 jfb 1585:
1586: /* ditch the strict lock */
1.26 jfb 1587: rfp->rf_flags &= ~RCS_SLOCK;
1.1 jfb 1588: rfp->rf_pdata = pdp;
1589:
1.31 jfb 1590: if ((ret = rcs_parse_admin(rfp)) < 0) {
1.1 jfb 1591: rcs_freepdata(pdp);
1592: return (-1);
1.31 jfb 1593: } else if (ret == RCS_TOK_NUM) {
1594: for (;;) {
1595: ret = rcs_parse_delta(rfp);
1596: if (ret == 0)
1597: break;
1598: else if (ret == -1) {
1599: rcs_freepdata(pdp);
1600: return (-1);
1601: }
1.1 jfb 1602: }
1603: }
1604:
1605: ret = rcs_gettok(rfp);
1606: if (ret != RCS_TOK_DESC) {
1.50 jfb 1607: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1608: cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
1609: RCS_TOKSTR(rfp));
1610: rcs_freepdata(pdp);
1611: return (-1);
1612: }
1613:
1614: ret = rcs_gettok(rfp);
1615: if (ret != RCS_TOK_STRING) {
1.50 jfb 1616: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1617: cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
1618: RCS_TOKSTR(rfp));
1619: rcs_freepdata(pdp);
1620: return (-1);
1621: }
1622:
1.39 joris 1623: rfp->rf_desc = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1624: if (rfp->rf_desc == NULL) {
1625: cvs_log(LP_ERRNO, "failed to duplicate rcs token");
1626: rcs_freepdata(pdp);
1627: return (-1);
1628: }
1.1 jfb 1629:
1630: for (;;) {
1631: ret = rcs_parse_deltatext(rfp);
1632: if (ret == 0)
1633: break;
1634: else if (ret == -1) {
1635: rcs_freepdata(pdp);
1636: return (-1);
1637: }
1638: }
1639:
1640: rcs_freepdata(pdp);
1641:
1642: rfp->rf_pdata = NULL;
1.26 jfb 1643: rfp->rf_flags |= RCS_PARSED | RCS_SYNCED;
1.1 jfb 1644:
1645: return (0);
1646: }
1647:
1648: /*
1649: * rcs_parse_admin()
1650: *
1651: * Parse the administrative portion of an RCS file.
1.31 jfb 1652: * Returns the type of the first token found after the admin section on
1653: * success, or -1 on failure.
1.1 jfb 1654: */
1655: static int
1656: rcs_parse_admin(RCSFILE *rfp)
1657: {
1658: u_int i;
1659: int tok, ntok, hmask;
1660: struct rcs_key *rk;
1661:
1662: /* hmask is a mask of the headers already encountered */
1663: hmask = 0;
1664: for (;;) {
1665: tok = rcs_gettok(rfp);
1666: if (tok == RCS_TOK_ERR) {
1.50 jfb 1667: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1668: cvs_log(LP_ERR, "parse error in RCS admin section");
1669: return (-1);
1.31 jfb 1670: } else if ((tok == RCS_TOK_NUM) || (tok == RCS_TOK_DESC)) {
1671: /*
1672: * Assume this is the start of the first delta or
1673: * that we are dealing with an empty RCS file and
1674: * we just found the description.
1675: */
1.1 jfb 1676: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1.31 jfb 1677: return (tok);
1.1 jfb 1678: }
1679:
1680: rk = NULL;
1.18 jfb 1681: for (i = 0; i < RCS_NKEYS; i++)
1.1 jfb 1682: if (rcs_keys[i].rk_id == tok)
1683: rk = &(rcs_keys[i]);
1684:
1685: if (hmask & (1 << tok)) {
1.50 jfb 1686: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1687: cvs_log(LP_ERR, "duplicate RCS key");
1688: return (-1);
1689: }
1690: hmask |= (1 << tok);
1691:
1692: switch (tok) {
1693: case RCS_TOK_HEAD:
1694: case RCS_TOK_BRANCH:
1695: case RCS_TOK_COMMENT:
1696: case RCS_TOK_EXPAND:
1697: ntok = rcs_gettok(rfp);
1698: if (ntok == RCS_TOK_SCOLON)
1699: break;
1700: if (ntok != rk->rk_val) {
1.50 jfb 1701: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1702: cvs_log(LP_ERR,
1703: "invalid value type for RCS key `%s'",
1704: rk->rk_str);
1705: }
1706:
1707: if (tok == RCS_TOK_HEAD) {
1.28 jfb 1708: if (rfp->rf_head == NULL) {
1709: rfp->rf_head = rcsnum_alloc();
1710: if (rfp->rf_head == NULL)
1711: return (-1);
1712: }
1.1 jfb 1713: rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1714: rfp->rf_head);
1.14 deraadt 1715: } else if (tok == RCS_TOK_BRANCH) {
1.35 jfb 1716: if (rfp->rf_branch == NULL) {
1717: rfp->rf_branch = rcsnum_alloc();
1718: if (rfp->rf_branch == NULL)
1719: return (-1);
1720: }
1721: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1722: rfp->rf_branch) < 0)
1723: return (-1);
1.14 deraadt 1724: } else if (tok == RCS_TOK_COMMENT) {
1.39 joris 1725: rfp->rf_comment = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1726: if (rfp->rf_comment == NULL) {
1727: cvs_log(LP_ERRNO,
1728: "failed to duplicate rcs token");
1729: return (-1);
1730: }
1.14 deraadt 1731: } else if (tok == RCS_TOK_EXPAND) {
1.39 joris 1732: rfp->rf_expand = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1733: if (rfp->rf_expand == NULL) {
1734: cvs_log(LP_ERRNO,
1735: "failed to duplicate rcs token");
1736: return (-1);
1737: }
1.1 jfb 1738: }
1739:
1740: /* now get the expected semi-colon */
1741: ntok = rcs_gettok(rfp);
1742: if (ntok != RCS_TOK_SCOLON) {
1.50 jfb 1743: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1744: cvs_log(LP_ERR,
1745: "missing semi-colon after RCS `%s' key",
1.26 jfb 1746: rk->rk_str);
1.1 jfb 1747: return (-1);
1748: }
1749: break;
1750: case RCS_TOK_ACCESS:
1.29 jfb 1751: if (rcs_parse_access(rfp) < 0)
1752: return (-1);
1.1 jfb 1753: break;
1754: case RCS_TOK_SYMBOLS:
1.29 jfb 1755: if (rcs_parse_symbols(rfp) < 0)
1756: return (-1);
1.1 jfb 1757: break;
1758: case RCS_TOK_LOCKS:
1.29 jfb 1759: if (rcs_parse_locks(rfp) < 0)
1760: return (-1);
1.1 jfb 1761: break;
1762: default:
1.50 jfb 1763: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1764: cvs_log(LP_ERR,
1765: "unexpected token `%s' in RCS admin section",
1766: RCS_TOKSTR(rfp));
1767: return (-1);
1768: }
1769: }
1770:
1771: return (0);
1772: }
1773:
1774: /*
1775: * rcs_parse_delta()
1776: *
1777: * Parse an RCS delta section and allocate the structure to store that delta's
1778: * information in the <rfp> delta list.
1779: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1780: * -1 on error.
1781: */
1782: static int
1783: rcs_parse_delta(RCSFILE *rfp)
1784: {
1785: int ret, tok, ntok, hmask;
1786: u_int i;
1787: char *tokstr;
1.3 vincent 1788: RCSNUM *datenum;
1.1 jfb 1789: struct rcs_delta *rdp;
1790: struct rcs_key *rk;
1791:
1792: rdp = (struct rcs_delta *)malloc(sizeof(*rdp));
1793: if (rdp == NULL) {
1.50 jfb 1794: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1795: cvs_log(LP_ERRNO, "failed to allocate RCS delta structure");
1796: return (-1);
1797: }
1798: memset(rdp, 0, sizeof(*rdp));
1799:
1800: rdp->rd_num = rcsnum_alloc();
1.11 joris 1801: if (rdp->rd_num == NULL) {
1802: rcs_freedelta(rdp);
1803: return (-1);
1804: }
1.1 jfb 1805: rdp->rd_next = rcsnum_alloc();
1.11 joris 1806: if (rdp->rd_next == NULL) {
1807: rcs_freedelta(rdp);
1808: return (-1);
1809: }
1.1 jfb 1810:
1811: TAILQ_INIT(&(rdp->rd_branches));
1.52 jfb 1812: TAILQ_INIT(&(rdp->rd_snodes));
1.1 jfb 1813:
1814: tok = rcs_gettok(rfp);
1815: if (tok != RCS_TOK_NUM) {
1.52 jfb 1816: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1817: cvs_log(LP_ERR, "unexpected token `%s' at start of delta",
1818: RCS_TOKSTR(rfp));
1819: rcs_freedelta(rdp);
1820: return (-1);
1821: }
1822: rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num);
1823:
1824: hmask = 0;
1825: ret = 0;
1826: tokstr = NULL;
1827:
1828: for (;;) {
1829: tok = rcs_gettok(rfp);
1830: if (tok == RCS_TOK_ERR) {
1.50 jfb 1831: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1832: cvs_log(LP_ERR, "parse error in RCS delta section");
1833: rcs_freedelta(rdp);
1834: return (-1);
1.14 deraadt 1835: } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
1.15 tedu 1836: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1.1 jfb 1837: ret = (tok == RCS_TOK_NUM ? 1 : 0);
1838: break;
1839: }
1840:
1841: rk = NULL;
1.18 jfb 1842: for (i = 0; i < RCS_NKEYS; i++)
1.1 jfb 1843: if (rcs_keys[i].rk_id == tok)
1844: rk = &(rcs_keys[i]);
1845:
1846: if (hmask & (1 << tok)) {
1.50 jfb 1847: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1848: cvs_log(LP_ERR, "duplicate RCS key");
1849: rcs_freedelta(rdp);
1850: return (-1);
1851: }
1852: hmask |= (1 << tok);
1853:
1854: switch (tok) {
1855: case RCS_TOK_DATE:
1856: case RCS_TOK_AUTHOR:
1857: case RCS_TOK_STATE:
1858: case RCS_TOK_NEXT:
1859: ntok = rcs_gettok(rfp);
1860: if (ntok == RCS_TOK_SCOLON) {
1861: if (rk->rk_flags & RCS_VOPT)
1862: break;
1863: else {
1.50 jfb 1864: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1865: cvs_log(LP_ERR, "missing mandatory "
1866: "value to RCS key `%s'",
1867: rk->rk_str);
1868: rcs_freedelta(rdp);
1869: return (-1);
1870: }
1871: }
1872:
1873: if (ntok != rk->rk_val) {
1.50 jfb 1874: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1875: cvs_log(LP_ERR,
1876: "invalid value type for RCS key `%s'",
1877: rk->rk_str);
1878: rcs_freedelta(rdp);
1879: return (-1);
1880: }
1881:
1882: if (tokstr != NULL)
1.41 jfb 1883: cvs_strfree(tokstr);
1.39 joris 1884: tokstr = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1885: if (tokstr == NULL) {
1.15 tedu 1886: cvs_log(LP_ERRNO,
1.10 joris 1887: "failed to duplicate rcs token");
1888: rcs_freedelta(rdp);
1889: return (-1);
1890: }
1.1 jfb 1891:
1892: /* now get the expected semi-colon */
1893: ntok = rcs_gettok(rfp);
1894: if (ntok != RCS_TOK_SCOLON) {
1.50 jfb 1895: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1896: cvs_log(LP_ERR,
1897: "missing semi-colon after RCS `%s' key",
1.26 jfb 1898: rk->rk_str);
1.41 jfb 1899: cvs_strfree(tokstr);
1.1 jfb 1900: rcs_freedelta(rdp);
1901: return (-1);
1902: }
1903:
1904: if (tok == RCS_TOK_DATE) {
1.25 jfb 1905: if ((datenum = rcsnum_parse(tokstr)) == NULL) {
1.41 jfb 1906: cvs_strfree(tokstr);
1.11 joris 1907: rcs_freedelta(rdp);
1908: return (-1);
1909: }
1.3 vincent 1910: if (datenum->rn_len != 6) {
1.50 jfb 1911: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1912: cvs_log(LP_ERR,
1913: "RCS date specification has %s "
1914: "fields",
1.3 vincent 1915: (datenum->rn_len > 6) ? "too many" :
1.1 jfb 1916: "missing");
1.41 jfb 1917: cvs_strfree(tokstr);
1.1 jfb 1918: rcs_freedelta(rdp);
1.37 tedu 1919: rcsnum_free(datenum);
1920: return (-1);
1.1 jfb 1921: }
1.3 vincent 1922: rdp->rd_date.tm_year = datenum->rn_id[0];
1.19 jfb 1923: if (rdp->rd_date.tm_year >= 1900)
1924: rdp->rd_date.tm_year -= 1900;
1.3 vincent 1925: rdp->rd_date.tm_mon = datenum->rn_id[1] - 1;
1926: rdp->rd_date.tm_mday = datenum->rn_id[2];
1927: rdp->rd_date.tm_hour = datenum->rn_id[3];
1928: rdp->rd_date.tm_min = datenum->rn_id[4];
1929: rdp->rd_date.tm_sec = datenum->rn_id[5];
1930: rcsnum_free(datenum);
1.14 deraadt 1931: } else if (tok == RCS_TOK_AUTHOR) {
1.1 jfb 1932: rdp->rd_author = tokstr;
1933: tokstr = NULL;
1.14 deraadt 1934: } else if (tok == RCS_TOK_STATE) {
1.1 jfb 1935: rdp->rd_state = tokstr;
1936: tokstr = NULL;
1.14 deraadt 1937: } else if (tok == RCS_TOK_NEXT) {
1.1 jfb 1938: rcsnum_aton(tokstr, NULL, rdp->rd_next);
1939: }
1940: break;
1941: case RCS_TOK_BRANCHES:
1.46 jfb 1942: if (rcs_parse_branches(rfp, rdp) < 0) {
1943: rcs_freedelta(rdp);
1944: return (-1);
1945: }
1.1 jfb 1946: break;
1947: default:
1.50 jfb 1948: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1949: cvs_log(LP_ERR,
1950: "unexpected token `%s' in RCS delta",
1951: RCS_TOKSTR(rfp));
1952: rcs_freedelta(rdp);
1953: return (-1);
1954: }
1955: }
1956:
1.13 jfb 1957: if (tokstr != NULL)
1.39 joris 1958: cvs_strfree(tokstr);
1.13 jfb 1959:
1.1 jfb 1960: TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list);
1.26 jfb 1961: rfp->rf_ndelta++;
1.1 jfb 1962:
1963: return (ret);
1964: }
1965:
1966: /*
1967: * rcs_parse_deltatext()
1968: *
1969: * Parse an RCS delta text section and fill in the log and text field of the
1970: * appropriate delta section.
1971: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1972: * -1 on error.
1973: */
1974: static int
1975: rcs_parse_deltatext(RCSFILE *rfp)
1976: {
1977: int tok;
1978: RCSNUM *tnum;
1979: struct rcs_delta *rdp;
1980:
1981: tok = rcs_gettok(rfp);
1982: if (tok == RCS_TOK_EOF)
1983: return (0);
1984:
1985: if (tok != RCS_TOK_NUM) {
1.50 jfb 1986: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1987: cvs_log(LP_ERR,
1988: "unexpected token `%s' at start of RCS delta text",
1989: RCS_TOKSTR(rfp));
1990: return (-1);
1991: }
1.13 jfb 1992:
1993: tnum = rcsnum_alloc();
1994: if (tnum == NULL)
1995: return (-1);
1.1 jfb 1996: rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum);
1997:
1998: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
1999: if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0)
2000: break;
2001: }
1.13 jfb 2002: rcsnum_free(tnum);
2003:
1.1 jfb 2004: if (rdp == NULL) {
2005: cvs_log(LP_ERR, "RCS delta text `%s' has no matching delta",
2006: RCS_TOKSTR(rfp));
2007: return (-1);
2008: }
2009:
2010: tok = rcs_gettok(rfp);
2011: if (tok != RCS_TOK_LOG) {
1.50 jfb 2012: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2013: cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
2014: RCS_TOKSTR(rfp));
2015: return (-1);
2016: }
2017:
2018: tok = rcs_gettok(rfp);
2019: if (tok != RCS_TOK_STRING) {
1.50 jfb 2020: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2021: cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
2022: RCS_TOKSTR(rfp));
2023: return (-1);
2024: }
1.39 joris 2025: rdp->rd_log = cvs_strdup(RCS_TOKSTR(rfp));
1.1 jfb 2026: if (rdp->rd_log == NULL) {
2027: cvs_log(LP_ERRNO, "failed to copy RCS deltatext log");
2028: return (-1);
2029: }
2030:
2031: tok = rcs_gettok(rfp);
2032: if (tok != RCS_TOK_TEXT) {
1.50 jfb 2033: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2034: cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
2035: RCS_TOKSTR(rfp));
2036: return (-1);
2037: }
2038:
2039: tok = rcs_gettok(rfp);
2040: if (tok != RCS_TOK_STRING) {
1.50 jfb 2041: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2042: cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
2043: RCS_TOKSTR(rfp));
2044: return (-1);
2045: }
2046:
1.45 jfb 2047: rdp->rd_text = (u_char *)malloc(RCS_TOKLEN(rfp));
1.1 jfb 2048: if (rdp->rd_text == NULL) {
2049: cvs_log(LP_ERRNO, "failed to copy RCS delta text");
2050: return (-1);
2051: }
1.45 jfb 2052: memcpy(rdp->rd_text, RCS_TOKSTR(rfp), RCS_TOKLEN(rfp));
1.42 jfb 2053: rdp->rd_tlen = RCS_TOKLEN(rfp);
1.1 jfb 2054:
2055: return (1);
2056: }
2057:
2058: /*
2059: * rcs_parse_access()
2060: *
2061: * Parse the access list given as value to the `access' keyword.
2062: * Returns 0 on success, or -1 on failure.
2063: */
2064: static int
2065: rcs_parse_access(RCSFILE *rfp)
2066: {
2067: int type;
2068:
2069: while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) {
2070: if (type != RCS_TOK_ID) {
1.50 jfb 2071: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2072: cvs_log(LP_ERR, "unexpected token `%s' in access list",
2073: RCS_TOKSTR(rfp));
2074: return (-1);
2075: }
1.29 jfb 2076:
2077: if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0)
2078: return (-1);
1.1 jfb 2079: }
2080:
2081: return (0);
2082: }
2083:
2084: /*
2085: * rcs_parse_symbols()
2086: *
2087: * Parse the symbol list given as value to the `symbols' keyword.
2088: * Returns 0 on success, or -1 on failure.
2089: */
2090: static int
2091: rcs_parse_symbols(RCSFILE *rfp)
2092: {
2093: int type;
2094: struct rcs_sym *symp;
2095:
2096: for (;;) {
2097: type = rcs_gettok(rfp);
2098: if (type == RCS_TOK_SCOLON)
2099: break;
2100:
1.41 jfb 2101: if (type != RCS_TOK_ID) {
1.50 jfb 2102: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2103: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2104: RCS_TOKSTR(rfp));
2105: return (-1);
2106: }
2107:
2108: symp = (struct rcs_sym *)malloc(sizeof(*symp));
2109: if (symp == NULL) {
1.50 jfb 2110: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 2111: cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
2112: return (-1);
2113: }
1.39 joris 2114: symp->rs_name = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 2115: if (symp->rs_name == NULL) {
2116: cvs_log(LP_ERRNO, "failed to duplicate rcs token");
2117: free(symp);
2118: return (-1);
2119: }
2120:
1.1 jfb 2121: symp->rs_num = rcsnum_alloc();
1.11 joris 2122: if (symp->rs_num == NULL) {
2123: cvs_log(LP_ERRNO, "failed to allocate rcsnum info");
1.39 joris 2124: cvs_strfree(symp->rs_name);
1.11 joris 2125: free(symp);
2126: return (-1);
2127: }
1.1 jfb 2128:
2129: type = rcs_gettok(rfp);
2130: if (type != RCS_TOK_COLON) {
1.50 jfb 2131: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2132: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2133: RCS_TOKSTR(rfp));
1.11 joris 2134: rcsnum_free(symp->rs_num);
1.39 joris 2135: cvs_strfree(symp->rs_name);
1.1 jfb 2136: free(symp);
2137: return (-1);
2138: }
2139:
2140: type = rcs_gettok(rfp);
2141: if (type != RCS_TOK_NUM) {
1.50 jfb 2142: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2143: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2144: RCS_TOKSTR(rfp));
1.11 joris 2145: rcsnum_free(symp->rs_num);
1.39 joris 2146: cvs_strfree(symp->rs_name);
1.1 jfb 2147: free(symp);
2148: return (-1);
2149: }
2150:
2151: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) {
2152: cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
2153: RCS_TOKSTR(rfp));
1.11 joris 2154: rcsnum_free(symp->rs_num);
1.39 joris 2155: cvs_strfree(symp->rs_name);
1.1 jfb 2156: free(symp);
2157: return (-1);
2158: }
2159:
1.43 jfb 2160: TAILQ_INSERT_TAIL(&(rfp->rf_symbols), symp, rs_list);
1.1 jfb 2161: }
2162:
2163: return (0);
2164: }
2165:
2166: /*
2167: * rcs_parse_locks()
2168: *
2169: * Parse the lock list given as value to the `locks' keyword.
2170: * Returns 0 on success, or -1 on failure.
2171: */
2172: static int
2173: rcs_parse_locks(RCSFILE *rfp)
2174: {
2175: int type;
2176: struct rcs_lock *lkp;
2177:
2178: for (;;) {
2179: type = rcs_gettok(rfp);
2180: if (type == RCS_TOK_SCOLON)
2181: break;
2182:
2183: if (type != RCS_TOK_ID) {
1.50 jfb 2184: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2185: cvs_log(LP_ERR, "unexpected token `%s' in lock list",
2186: RCS_TOKSTR(rfp));
2187: return (-1);
2188: }
2189:
2190: lkp = (struct rcs_lock *)malloc(sizeof(*lkp));
2191: if (lkp == NULL) {
2192: cvs_log(LP_ERRNO, "failed to allocate RCS lock");
2193: return (-1);
2194: }
2195: lkp->rl_num = rcsnum_alloc();
1.11 joris 2196: if (lkp->rl_num == NULL) {
2197: free(lkp);
2198: return (-1);
2199: }
1.1 jfb 2200:
2201: type = rcs_gettok(rfp);
2202: if (type != RCS_TOK_COLON) {
1.50 jfb 2203: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2204: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2205: RCS_TOKSTR(rfp));
1.37 tedu 2206: rcsnum_free(lkp->rl_num);
1.1 jfb 2207: free(lkp);
2208: return (-1);
2209: }
2210:
2211: type = rcs_gettok(rfp);
2212: if (type != RCS_TOK_NUM) {
1.50 jfb 2213: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2214: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2215: RCS_TOKSTR(rfp));
1.37 tedu 2216: rcsnum_free(lkp->rl_num);
1.1 jfb 2217: free(lkp);
2218: return (-1);
2219: }
2220:
2221: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) {
2222: cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
2223: RCS_TOKSTR(rfp));
1.37 tedu 2224: rcsnum_free(lkp->rl_num);
1.1 jfb 2225: free(lkp);
2226: return (-1);
2227: }
2228:
2229: TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list);
2230: }
2231:
2232: /* check if we have a `strict' */
2233: type = rcs_gettok(rfp);
2234: if (type != RCS_TOK_STRICT) {
2235: rcs_pushtok(rfp, RCS_TOKSTR(rfp), type);
1.14 deraadt 2236: } else {
1.26 jfb 2237: rfp->rf_flags |= RCS_SLOCK;
1.1 jfb 2238:
2239: type = rcs_gettok(rfp);
2240: if (type != RCS_TOK_SCOLON) {
1.50 jfb 2241: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2242: cvs_log(LP_ERR,
2243: "missing semi-colon after `strict' keyword");
2244: return (-1);
2245: }
2246: }
2247:
2248: return (0);
2249: }
2250:
2251: /*
2252: * rcs_parse_branches()
2253: *
2254: * Parse the list of branches following a `branches' keyword in a delta.
2255: * Returns 0 on success, or -1 on failure.
2256: */
2257: static int
2258: rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp)
2259: {
2260: int type;
2261: struct rcs_branch *brp;
2262:
2263: for (;;) {
2264: type = rcs_gettok(rfp);
2265: if (type == RCS_TOK_SCOLON)
2266: break;
2267:
2268: if (type != RCS_TOK_NUM) {
1.50 jfb 2269: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2270: cvs_log(LP_ERR,
2271: "unexpected token `%s' in list of branches",
2272: RCS_TOKSTR(rfp));
2273: return (-1);
2274: }
2275:
2276: brp = (struct rcs_branch *)malloc(sizeof(*brp));
2277: if (brp == NULL) {
1.50 jfb 2278: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 2279: cvs_log(LP_ERRNO, "failed to allocate RCS branch");
2280: return (-1);
2281: }
1.46 jfb 2282: brp->rb_num = rcsnum_parse(RCS_TOKSTR(rfp));
1.11 joris 2283: if (brp->rb_num == NULL) {
2284: free(brp);
2285: return (-1);
2286: }
1.1 jfb 2287:
2288: TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list);
2289: }
2290:
2291: return (0);
2292: }
2293:
2294: /*
2295: * rcs_freedelta()
2296: *
2297: * Free the contents of a delta structure.
2298: */
1.18 jfb 2299: static void
1.1 jfb 2300: rcs_freedelta(struct rcs_delta *rdp)
2301: {
1.12 jfb 2302: struct rcs_branch *rb;
1.1 jfb 2303: struct rcs_delta *crdp;
2304:
1.12 jfb 2305: if (rdp->rd_num != NULL)
2306: rcsnum_free(rdp->rd_num);
2307: if (rdp->rd_next != NULL)
2308: rcsnum_free(rdp->rd_next);
2309:
1.1 jfb 2310: if (rdp->rd_author != NULL)
1.39 joris 2311: cvs_strfree(rdp->rd_author);
1.1 jfb 2312: if (rdp->rd_state != NULL)
1.39 joris 2313: cvs_strfree(rdp->rd_state);
1.1 jfb 2314: if (rdp->rd_log != NULL)
1.39 joris 2315: cvs_strfree(rdp->rd_log);
1.1 jfb 2316: if (rdp->rd_text != NULL)
1.45 jfb 2317: free(rdp->rd_text);
1.12 jfb 2318:
2319: while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
2320: TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
2321: rcsnum_free(rb->rb_num);
2322: free(rb);
2323: }
1.1 jfb 2324:
2325: while ((crdp = TAILQ_FIRST(&(rdp->rd_snodes))) != NULL) {
2326: TAILQ_REMOVE(&(rdp->rd_snodes), crdp, rd_list);
2327: rcs_freedelta(crdp);
2328: }
2329:
2330: free(rdp);
2331: }
2332:
2333: /*
2334: * rcs_freepdata()
2335: *
2336: * Free the contents of the parser data structure.
2337: */
2338: static void
2339: rcs_freepdata(struct rcs_pdata *pd)
2340: {
2341: if (pd->rp_file != NULL)
2342: (void)fclose(pd->rp_file);
2343: if (pd->rp_buf != NULL)
2344: free(pd->rp_buf);
2345: free(pd);
2346: }
2347:
2348: /*
2349: * rcs_gettok()
2350: *
2351: * Get the next RCS token from the string <str>.
2352: */
2353: static int
2354: rcs_gettok(RCSFILE *rfp)
2355: {
2356: u_int i;
2357: int ch, last, type;
1.18 jfb 2358: size_t len;
2359: char *bp;
1.1 jfb 2360: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2361:
2362: type = RCS_TOK_ERR;
2363: bp = pdp->rp_buf;
1.42 jfb 2364: pdp->rp_tlen = 0;
1.1 jfb 2365: *bp = '\0';
2366:
2367: if (pdp->rp_pttype != RCS_TOK_ERR) {
2368: type = pdp->rp_pttype;
2369: strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen);
2370: pdp->rp_pttype = RCS_TOK_ERR;
2371: return (type);
2372: }
2373:
2374: /* skip leading whitespace */
2375: /* XXX we must skip backspace too for compatibility, should we? */
2376: do {
2377: ch = getc(pdp->rp_file);
2378: if (ch == '\n')
1.18 jfb 2379: pdp->rp_lines++;
1.1 jfb 2380: } while (isspace(ch));
2381:
2382: if (ch == EOF) {
2383: type = RCS_TOK_EOF;
1.14 deraadt 2384: } else if (ch == ';') {
1.1 jfb 2385: type = RCS_TOK_SCOLON;
1.14 deraadt 2386: } else if (ch == ':') {
1.1 jfb 2387: type = RCS_TOK_COLON;
1.14 deraadt 2388: } else if (isalpha(ch)) {
1.31 jfb 2389: type = RCS_TOK_ID;
1.1 jfb 2390: *(bp++) = ch;
1.18 jfb 2391: for (;;) {
1.1 jfb 2392: ch = getc(pdp->rp_file);
1.11 joris 2393: if (!isalnum(ch) && ch != '_' && ch != '-') {
1.1 jfb 2394: ungetc(ch, pdp->rp_file);
2395: break;
2396: }
2397: *(bp++) = ch;
1.42 jfb 2398: pdp->rp_tlen++;
1.18 jfb 2399: if (bp == pdp->rp_bufend - 1) {
2400: len = bp - pdp->rp_buf;
2401: if (rcs_growbuf(rfp) < 0) {
2402: type = RCS_TOK_ERR;
2403: break;
2404: }
2405: bp = pdp->rp_buf + len;
2406: }
1.1 jfb 2407: }
2408: *bp = '\0';
2409:
1.18 jfb 2410: if (type != RCS_TOK_ERR) {
2411: for (i = 0; i < RCS_NKEYS; i++) {
2412: if (strcmp(rcs_keys[i].rk_str,
2413: pdp->rp_buf) == 0) {
2414: type = rcs_keys[i].rk_id;
2415: break;
2416: }
1.1 jfb 2417: }
2418: }
1.14 deraadt 2419: } else if (ch == '@') {
1.1 jfb 2420: /* we have a string */
1.18 jfb 2421: type = RCS_TOK_STRING;
1.1 jfb 2422: for (;;) {
2423: ch = getc(pdp->rp_file);
2424: if (ch == '@') {
2425: ch = getc(pdp->rp_file);
2426: if (ch != '@') {
2427: ungetc(ch, pdp->rp_file);
2428: break;
2429: }
1.14 deraadt 2430: } else if (ch == '\n')
1.18 jfb 2431: pdp->rp_lines++;
1.1 jfb 2432:
2433: *(bp++) = ch;
1.42 jfb 2434: pdp->rp_tlen++;
1.18 jfb 2435: if (bp == pdp->rp_bufend - 1) {
2436: len = bp - pdp->rp_buf;
2437: if (rcs_growbuf(rfp) < 0) {
2438: type = RCS_TOK_ERR;
2439: break;
2440: }
2441: bp = pdp->rp_buf + len;
2442: }
1.1 jfb 2443: }
2444:
2445: *bp = '\0';
1.14 deraadt 2446: } else if (isdigit(ch)) {
1.1 jfb 2447: *(bp++) = ch;
2448: last = ch;
2449: type = RCS_TOK_NUM;
2450:
2451: for (;;) {
2452: ch = getc(pdp->rp_file);
1.18 jfb 2453: if (bp == pdp->rp_bufend)
1.1 jfb 2454: break;
2455: if (!isdigit(ch) && ch != '.') {
2456: ungetc(ch, pdp->rp_file);
2457: break;
2458: }
2459:
2460: if (last == '.' && ch == '.') {
2461: type = RCS_TOK_ERR;
2462: break;
2463: }
2464: last = ch;
2465: *(bp++) = ch;
1.42 jfb 2466: pdp->rp_tlen++;
1.1 jfb 2467: }
1.18 jfb 2468: *bp = '\0';
1.1 jfb 2469: }
2470:
2471: return (type);
2472: }
2473:
2474: /*
2475: * rcs_pushtok()
2476: *
2477: * Push a token back in the parser's token buffer.
2478: */
2479: static int
2480: rcs_pushtok(RCSFILE *rfp, const char *tok, int type)
2481: {
2482: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2483:
2484: if (pdp->rp_pttype != RCS_TOK_ERR)
2485: return (-1);
2486:
2487: pdp->rp_pttype = type;
2488: strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok));
2489: return (0);
2490: }
2491:
2492:
2493: /*
2494: * rcs_splitlines()
2495: *
2496: * Split the contents of a file into a list of lines.
2497: */
2498: static struct rcs_foo*
2499: rcs_splitlines(const char *fcont)
2500: {
2501: char *dcp;
2502: struct rcs_foo *foo;
2503: struct rcs_line *lp;
2504:
2505: foo = (struct rcs_foo *)malloc(sizeof(*foo));
2506: if (foo == NULL) {
2507: cvs_log(LP_ERR, "failed to allocate line structure");
2508: return (NULL);
2509: }
2510: TAILQ_INIT(&(foo->rl_lines));
2511: foo->rl_nblines = 0;
2512: foo->rl_data = strdup(fcont);
2513: if (foo->rl_data == NULL) {
2514: cvs_log(LP_ERRNO, "failed to copy file contents");
2515: free(foo);
2516: return (NULL);
2517: }
2518:
2519: /*
2520: * Add a first bogus line with line number 0. This is used so we
2521: * can position the line pointer before 1 when changing the first line
2522: * in rcs_patch().
2523: */
2524: lp = (struct rcs_line *)malloc(sizeof(*lp));
1.38 joris 2525: if (lp == NULL) {
2526: rcs_freefoo(foo);
1.1 jfb 2527: return (NULL);
1.38 joris 2528: }
1.5 vincent 2529:
1.1 jfb 2530: lp->rl_line = NULL;
2531: lp->rl_lineno = 0;
2532: TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
2533:
2534:
2535: for (dcp = foo->rl_data; *dcp != '\0';) {
2536: lp = (struct rcs_line *)malloc(sizeof(*lp));
2537: if (lp == NULL) {
1.38 joris 2538: rcs_freefoo(foo);
1.1 jfb 2539: cvs_log(LP_ERR, "failed to allocate line entry");
2540: return (NULL);
2541: }
2542:
2543: lp->rl_line = dcp;
2544: lp->rl_lineno = ++(foo->rl_nblines);
2545: TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
2546:
2547: dcp = strchr(dcp, '\n');
2548: if (dcp == NULL) {
2549: break;
2550: }
2551: *(dcp++) = '\0';
2552: }
2553:
2554: return (foo);
1.5 vincent 2555: }
2556:
2557: static void
2558: rcs_freefoo(struct rcs_foo *fp)
2559: {
2560: struct rcs_line *lp;
2561:
2562: while ((lp = TAILQ_FIRST(&fp->rl_lines)) != NULL) {
2563: TAILQ_REMOVE(&fp->rl_lines, lp, rl_list);
2564: free(lp);
2565: }
2566: free(fp->rl_data);
2567: free(fp);
1.18 jfb 2568: }
2569:
2570: /*
2571: * rcs_growbuf()
2572: *
2573: * Attempt to grow the internal parse buffer for the RCS file <rf> by
2574: * RCS_BUFEXTSIZE.
2575: * In case of failure, the original buffer is left unmodified.
2576: * Returns 0 on success, or -1 on failure.
2577: */
2578: static int
2579: rcs_growbuf(RCSFILE *rf)
2580: {
2581: void *tmp;
2582: struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata;
2583:
2584: tmp = realloc(pdp->rp_buf, pdp->rp_blen + RCS_BUFEXTSIZE);
2585: if (tmp == NULL) {
1.50 jfb 2586: rcs_errno = RCS_ERR_ERRNO;
1.18 jfb 2587: cvs_log(LP_ERRNO, "failed to grow RCS parse buffer");
2588: return (-1);
2589: }
2590:
2591: pdp->rp_buf = (char *)tmp;
2592: pdp->rp_blen += RCS_BUFEXTSIZE;
2593: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
1.42 jfb 2594:
2595: return (0);
2596: }
2597:
2598: /*
2599: * rcs_strprint()
2600: *
2601: * Output an RCS string <str> of size <slen> to the stream <stream>. Any
2602: * '@' characters are escaped. Otherwise, the string can contain arbitrary
2603: * binary data.
2604: */
2605: static int
2606: rcs_strprint(const u_char *str, size_t slen, FILE *stream)
2607: {
2608: const u_char *ap, *ep, *sp;
2609: size_t ret;
1.52 jfb 2610:
2611: if (slen == 0)
2612: return (0);
1.42 jfb 2613:
2614: ep = str + slen - 1;
2615:
2616: for (sp = str; sp <= ep;) {
2617: ap = memchr(sp, '@', ep - sp);
2618: if (ap == NULL)
2619: ap = ep;
2620: ret = fwrite(sp, sizeof(u_char), ap - sp + 1, stream);
2621:
2622: if (*ap == '@')
2623: putc('@', stream);
2624: sp = ap + 1;
2625: }
1.18 jfb 2626:
2627: return (0);
1.1 jfb 2628: }
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