Annotation of src/usr.bin/cvs/cvs.c, Revision 1.150
1.150 ! joris 1: /* $OpenBSD: cvs.c,v 1.149 2008/06/17 11:05:39 joris Exp $ */
1.1 jfb 2: /*
1.113 joris 3: * Copyright (c) 2006, 2007 Joris Vink <joris@openbsd.org>
1.1 jfb 4: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
1.18 tedu 5: * All rights reserved.
1.1 jfb 6: *
1.18 tedu 7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
1.1 jfb 10: *
1.18 tedu 11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
1.1 jfb 13: * 2. The name of the author may not be used to endorse or promote products
1.18 tedu 14: * derived from this software without specific prior written permission.
1.1 jfb 15: *
16: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
17: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
18: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
19: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
1.18 tedu 25: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1 jfb 26: */
27:
1.117 otto 28: #include <sys/stat.h>
29:
30: #include <ctype.h>
31: #include <errno.h>
32: #include <pwd.h>
33: #include <stdlib.h>
34: #include <string.h>
1.120 xsa 35: #include <time.h>
1.117 otto 36: #include <unistd.h>
1.1 jfb 37:
38: #include "cvs.h"
1.106 joris 39: #include "remote.h"
1.150 ! joris 40: #include "hash.h"
1.1 jfb 41:
42: extern char *__progname;
43:
44: /* verbosity level: 0 = really quiet, 1 = quiet, 2 = verbose */
1.147 joris 45: int verbosity = 2;
1.1 jfb 46:
47: /* compression level used with zlib, 0 meaning no compression taking place */
1.98 joris 48: int cvs_compress = 0;
49: int cvs_readrc = 1; /* read .cvsrc on startup */
50: int cvs_trace = 0;
51: int cvs_nolog = 0;
52: int cvs_readonly = 0;
1.111 xsa 53: int cvs_readonlyfs = 0;
1.98 joris 54: int cvs_nocase = 0; /* set to 1 to disable filename case sensitivity */
55: int cvs_noexec = 0; /* set to 1 to disable disk operations (-n option) */
56: int cvs_cmdop;
1.99 joris 57: int cvs_umask = CVS_UMASK_DEFAULT;
1.106 joris 58: int cvs_server_active = 0;
1.98 joris 59:
1.99 joris 60: char *cvs_tagname = NULL;
1.98 joris 61: char *cvs_defargs; /* default global arguments from .cvsrc */
62: char *cvs_rootstr;
63: char *cvs_rsh = CVS_RSH_DEFAULT;
64: char *cvs_editor = CVS_EDITOR_DEFAULT;
65: char *cvs_homedir = NULL;
66: char *cvs_msg = NULL;
67: char *cvs_tmpdir = CVS_TMPDIR_DEFAULT;
1.13 krapht 68:
1.98 joris 69: struct cvsroot *current_cvsroot = NULL;
1.140 tobias 70: struct cvs_cmd *cmdp; /* struct of command we are running */
1.27 jfb 71:
1.98 joris 72: int cvs_getopt(int, char **);
1.121 xsa 73: __dead void usage(void);
1.75 xsa 74: static void cvs_read_rcfile(void);
1.1 jfb 75:
1.98 joris 76: struct cvs_wklhead temp_files;
77:
78: void sighandler(int);
79: volatile sig_atomic_t cvs_quit = 0;
80: volatile sig_atomic_t sig_received = 0;
81:
1.148 joris 82: extern CVSENTRIES *current_list;
83:
1.150 ! joris 84: struct hash_table created_directories;
! 85: struct hash_table created_cvs_directories;
! 86:
1.98 joris 87: void
88: sighandler(int sig)
89: {
90: sig_received = sig;
91:
92: switch (sig) {
93: case SIGINT:
94: case SIGTERM:
1.107 joris 95: case SIGPIPE:
1.98 joris 96: cvs_quit = 1;
97: break;
98: default:
99: break;
100: }
101: }
102:
103: void
104: cvs_cleanup(void)
105: {
106: cvs_log(LP_TRACE, "cvs_cleanup: removing locks");
107: cvs_worklist_run(&repo_locks, cvs_worklist_unlink);
108:
109: cvs_log(LP_TRACE, "cvs_cleanup: removing temp files");
110: cvs_worklist_run(&temp_files, cvs_worklist_unlink);
1.106 joris 111:
1.124 ray 112: if (cvs_server_path != NULL) {
1.106 joris 113: if (cvs_rmdir(cvs_server_path) == -1)
114: cvs_log(LP_ERR,
115: "warning: failed to remove server directory: %s",
116: cvs_server_path);
117: xfree(cvs_server_path);
1.124 ray 118: cvs_server_path = NULL;
1.106 joris 119: }
1.148 joris 120:
121: if (current_list != NULL)
122: cvs_ent_close(current_list, ENT_SYNC);
1.98 joris 123: }
124:
1.121 xsa 125: __dead void
1.1 jfb 126: usage(void)
127: {
1.121 xsa 128: (void)fprintf(stderr,
1.147 joris 129: "usage: %s [-flnQqRrtvw] [-d root] [-e editor] [-s var=val]\n"
1.129 sobrado 130: " [-T tmpdir] [-z level] command ...\n", __progname);
1.121 xsa 131: exit(1);
1.1 jfb 132: }
133:
134: int
1.145 tobias 135: cvs_build_cmd(char ***cmd_argv, char **argv, int argc)
136: {
137: int cmd_argc, i, cur;
138: char *cp, *linebuf, *lp;
139:
140: if (cmdp->cmd_defargs == NULL) {
141: *cmd_argv = argv;
142: return argc;
143: }
144:
145: cur = argc + 2;
146: cmd_argc = 0;
147: *cmd_argv = xcalloc(cur, sizeof(char *));
148: (*cmd_argv)[cmd_argc++] = argv[0];
149:
150: linebuf = xstrdup(cmdp->cmd_defargs);
151: for (lp = linebuf; lp != NULL;) {
152: cp = strsep(&lp, " \t\b\f\n\r\t\v");
153: if (cp == NULL)
154: break;
155: if (*cp == '\0')
156: continue;
157:
158: if (cmd_argc == cur) {
159: cur += 8;
160: *cmd_argv = xrealloc(*cmd_argv, cur,
161: sizeof(char *));
162: }
163:
164: (*cmd_argv)[cmd_argc++] = cp;
165: }
166:
167: if (cmd_argc + argc > cur) {
168: cur = cmd_argc + argc + 1;
169: *cmd_argv = xrealloc(*cmd_argv, cur,
170: sizeof(char *));
171: }
172:
173: for (i = 1; i < argc; i++)
174: (*cmd_argv)[cmd_argc++] = argv[i];
175:
176: (*cmd_argv)[cmd_argc] = NULL;
177:
178: return cmd_argc;
179: }
180:
181: int
1.1 jfb 182: main(int argc, char **argv)
183: {
1.145 tobias 184: char *envstr, **cmd_argv, **targv;
1.17 jfb 185: int i, ret, cmd_argc;
1.79 xsa 186: struct passwd *pw;
1.80 xsa 187: struct stat st;
1.100 joris 188: char fpath[MAXPATHLEN];
1.87 joris 189:
190: tzset();
1.1 jfb 191:
1.27 jfb 192: TAILQ_INIT(&cvs_variables);
1.98 joris 193: SLIST_INIT(&repo_locks);
194: SLIST_INIT(&temp_files);
1.150 ! joris 195:
! 196: hash_table_init(&created_directories, 100);
! 197: hash_table_init(&created_cvs_directories, 100);
1.1 jfb 198:
199: /* check environment so command-line options override it */
200: if ((envstr = getenv("CVS_RSH")) != NULL)
201: cvs_rsh = envstr;
202:
203: if (((envstr = getenv("CVSEDITOR")) != NULL) ||
204: ((envstr = getenv("VISUAL")) != NULL) ||
205: ((envstr = getenv("EDITOR")) != NULL))
206: cvs_editor = envstr;
1.76 xsa 207:
208: if ((envstr = getenv("CVSREAD")) != NULL)
209: cvs_readonly = 1;
1.1 jfb 210:
1.111 xsa 211: if ((envstr = getenv("CVSREADONLYFS")) != NULL) {
212: cvs_readonlyfs = 1;
213: cvs_nolog = 1;
214: }
215:
1.79 xsa 216: if ((cvs_homedir = getenv("HOME")) == NULL) {
1.131 tobias 217: if ((pw = getpwuid(getuid())) != NULL)
218: cvs_homedir = pw->pw_dir;
1.85 reyk 219: }
1.79 xsa 220:
1.80 xsa 221: if ((envstr = getenv("TMPDIR")) != NULL)
222: cvs_tmpdir = envstr;
223:
1.17 jfb 224: ret = cvs_getopt(argc, argv);
225:
226: argc -= ret;
227: argv += ret;
1.121 xsa 228: if (argc == 0)
1.17 jfb 229: usage();
1.80 xsa 230:
1.146 tobias 231: cmdp = cvs_findcmd(argv[0]);
232: if (cmdp == NULL) {
233: fprintf(stderr, "Unknown command: `%s'\n\n", argv[0]);
234: fprintf(stderr, "CVS commands are:\n");
235: for (i = 0; cvs_cdt[i] != NULL; i++)
236: fprintf(stderr, "\t%-16s%s\n",
237: cvs_cdt[i]->cmd_name, cvs_cdt[i]->cmd_descr);
238: exit(1);
239: }
240:
1.80 xsa 241: /*
242: * check the tmp dir, either specified through
243: * the environment variable TMPDIR, or via
244: * the global option -T <dir>
245: */
1.94 xsa 246: if (stat(cvs_tmpdir, &st) == -1)
247: fatal("stat failed on `%s': %s", cvs_tmpdir, strerror(errno));
248: else if (!S_ISDIR(st.st_mode))
249: fatal("`%s' is not valid temporary directory", cvs_tmpdir);
1.132 tobias 250:
1.131 tobias 251: if (cvs_readrc == 1 && cvs_homedir != NULL) {
1.17 jfb 252: cvs_read_rcfile();
253:
254: if (cvs_defargs != NULL) {
1.94 xsa 255: if ((targv = cvs_makeargv(cvs_defargs, &i)) == NULL)
256: fatal("failed to load default arguments to %s",
1.17 jfb 257: __progname);
258:
259: cvs_getopt(i, targv);
260: cvs_freeargv(targv, i);
1.88 joris 261: xfree(targv);
1.17 jfb 262: }
263: }
264:
265: /* setup signal handlers */
1.98 joris 266: signal(SIGTERM, sighandler);
267: signal(SIGINT, sighandler);
268: signal(SIGHUP, sighandler);
269: signal(SIGABRT, sighandler);
270: signal(SIGALRM, sighandler);
271: signal(SIGPIPE, sighandler);
1.17 jfb 272:
273: cvs_cmdop = cmdp->cmd_op;
274:
1.145 tobias 275: cmd_argc = cvs_build_cmd(&cmd_argv, argv, argc);
1.17 jfb 276:
1.98 joris 277: cvs_file_init();
278:
1.106 joris 279: if (cvs_cmdop == CVS_OP_SERVER) {
1.130 tobias 280: cmdp->cmd(cmd_argc, cmd_argv);
281: cvs_cleanup();
282: return (0);
1.106 joris 283: }
284:
1.144 tobias 285: cvs_umask = umask(0);
286: umask(cvs_umask);
287:
1.98 joris 288: if ((current_cvsroot = cvsroot_get(".")) == NULL) {
1.71 xsa 289: cvs_log(LP_ERR,
1.98 joris 290: "No CVSROOT specified! Please use the '-d' option");
1.102 david 291: fatal("or set the CVSROOT environment variable.");
1.17 jfb 292: }
293:
1.106 joris 294: if (current_cvsroot->cr_method != CVS_METHOD_LOCAL) {
295: cmdp->cmd(cmd_argc, cmd_argv);
296: cvs_cleanup();
297: return (0);
298: }
1.100 joris 299:
1.116 xsa 300: (void)xsnprintf(fpath, sizeof(fpath), "%s/%s",
301: current_cvsroot->cr_dir, CVS_PATH_ROOT);
1.110 xsa 302:
1.103 xsa 303: if (stat(fpath, &st) == -1 && cvs_cmdop != CVS_OP_INIT) {
1.100 joris 304: if (errno == ENOENT)
1.104 joris 305: fatal("repository '%s' does not exist",
1.100 joris 306: current_cvsroot->cr_dir);
307: else
308: fatal("%s: %s", current_cvsroot->cr_dir,
309: strerror(errno));
310: } else {
311: if (!S_ISDIR(st.st_mode))
312: fatal("'%s' is not a directory",
313: current_cvsroot->cr_dir);
314: }
1.99 joris 315:
1.142 joris 316: if (cvs_cmdop != CVS_OP_INIT) {
1.103 xsa 317: cvs_parse_configfile();
1.142 joris 318: cvs_parse_modules();
319: }
1.98 joris 320:
321: cmdp->cmd(cmd_argc, cmd_argv);
322: cvs_cleanup();
1.17 jfb 323:
1.98 joris 324: return (0);
1.17 jfb 325: }
326:
327: int
328: cvs_getopt(int argc, char **argv)
329: {
330: int ret;
331: char *ep;
1.115 joris 332: const char *errstr;
1.17 jfb 333:
1.147 joris 334: while ((ret = getopt(argc, argv, "b:d:e:flnQqRrs:T:tvwxz:")) != -1) {
1.1 jfb 335: switch (ret) {
1.11 jfb 336: case 'b':
337: /*
338: * We do not care about the bin directory for RCS files
339: * as this program has no dependencies on RCS programs,
340: * so it is only here for backwards compatibility.
341: */
342: cvs_log(LP_NOTICE, "the -b argument is obsolete");
343: break;
1.1 jfb 344: case 'd':
345: cvs_rootstr = optarg;
346: break;
347: case 'e':
348: cvs_editor = optarg;
349: break;
350: case 'f':
1.17 jfb 351: cvs_readrc = 0;
1.1 jfb 352: break;
353: case 'l':
354: cvs_nolog = 1;
355: break;
356: case 'n':
1.65 xsa 357: cvs_noexec = 1;
1.112 xsa 358: cvs_nolog = 1;
1.1 jfb 359: break;
360: case 'Q':
361: verbosity = 0;
362: break;
363: case 'q':
1.147 joris 364: if (verbosity > 1)
365: verbosity = 1;
1.111 xsa 366: break;
367: case 'R':
368: cvs_readonlyfs = 1;
369: cvs_nolog = 1;
1.1 jfb 370: break;
371: case 'r':
372: cvs_readonly = 1;
373: break;
1.27 jfb 374: case 's':
375: ep = strchr(optarg, '=');
376: if (ep == NULL) {
377: cvs_log(LP_ERR, "no = in variable assignment");
1.98 joris 378: exit(1);
1.27 jfb 379: }
380: *(ep++) = '\0';
381: if (cvs_var_set(optarg, ep) < 0)
1.98 joris 382: exit(1);
1.80 xsa 383: break;
384: case 'T':
385: cvs_tmpdir = optarg;
1.27 jfb 386: break;
1.1 jfb 387: case 't':
388: cvs_trace = 1;
389: break;
390: case 'v':
391: printf("%s\n", CVS_VERSION);
392: exit(0);
393: /* NOTREACHED */
1.83 xsa 394: case 'w':
395: cvs_readonly = 0;
1.11 jfb 396: break;
397: case 'x':
398: /*
399: * Kerberos encryption support, kept for compatibility
400: */
1.1 jfb 401: break;
402: case 'z':
1.115 joris 403: cvs_compress = strtonum(optarg, 0, 9, &errstr);
404: if (errstr != NULL)
405: fatal("cvs_compress: %s", errstr);
1.1 jfb 406: break;
407: default:
408: usage();
1.121 xsa 409: /* NOTREACHED */
1.1 jfb 410: }
411: }
412:
1.17 jfb 413: ret = optind;
1.1 jfb 414: optind = 1;
1.17 jfb 415: optreset = 1; /* for next call */
1.12 jfb 416:
1.1 jfb 417: return (ret);
418: }
419:
420: /*
1.17 jfb 421: * cvs_read_rcfile()
1.1 jfb 422: *
423: * Read the CVS `.cvsrc' file in the user's home directory. If the file
424: * exists, it should contain a list of arguments that should always be given
425: * implicitly to the specified commands.
426: */
1.42 joris 427: static void
1.17 jfb 428: cvs_read_rcfile(void)
1.1 jfb 429: {
1.133 tobias 430: char rcpath[MAXPATHLEN], *buf, *lbuf, *lp, *p;
1.137 tobias 431: int cmd_parsed, cvs_parsed, i, linenum;
1.135 tobias 432: size_t len, pos;
1.140 tobias 433: struct cvs_cmd *tcmdp;
1.1 jfb 434: FILE *fp;
435:
1.116 xsa 436: linenum = 0;
437:
438: i = snprintf(rcpath, MAXPATHLEN, "%s/%s", cvs_homedir, CVS_PATH_RC);
439: if (i < 0 || i >= MAXPATHLEN) {
1.108 xsa 440: cvs_log(LP_ERRNO, "%s", rcpath);
1.54 xsa 441: return;
442: }
1.1 jfb 443:
444: fp = fopen(rcpath, "r");
445: if (fp == NULL) {
446: if (errno != ENOENT)
447: cvs_log(LP_NOTICE, "failed to open `%s': %s", rcpath,
448: strerror(errno));
449: return;
450: }
1.137 tobias 451:
452: cmd_parsed = cvs_parsed = 0;
1.133 tobias 453: lbuf = NULL;
454: while ((buf = fgetln(fp, &len)) != NULL) {
455: if (buf[len - 1] == '\n') {
456: buf[len - 1] = '\0';
457: } else {
458: lbuf = xmalloc(len + 1);
459: memcpy(lbuf, buf, len);
460: lbuf[len] = '\0';
461: buf = lbuf;
462: }
463:
1.23 xsa 464: linenum++;
1.17 jfb 465:
1.70 joris 466: /* skip any whitespaces */
1.133 tobias 467: p = buf;
1.70 joris 468: while (*p == ' ')
1.95 deraadt 469: p++;
1.70 joris 470:
1.134 tobias 471: /*
472: * Allow comments.
473: * GNU cvs stops parsing a line if it encounters a \t
474: * in front of a command, stick at this behaviour for
475: * compatibility.
476: */
477: if (*p == '#' || *p == '\t')
1.70 joris 478: continue;
479:
1.135 tobias 480: pos = strcspn(p, " \t");
481: if (pos == strlen(p)) {
1.138 tobias 482: lp = NULL;
1.135 tobias 483: } else {
484: lp = p + pos;
485: *lp = '\0';
486: }
487:
1.137 tobias 488: if (strcmp(p, "cvs") == 0 && !cvs_parsed) {
1.17 jfb 489: /*
490: * Global default options. In the case of cvs only,
491: * we keep the 'cvs' string as first argument because
492: * getopt() does not like starting at index 0 for
493: * argument processing.
494: */
1.138 tobias 495: if (lp != NULL) {
496: *lp = ' ';
497: cvs_defargs = xstrdup(p);
498: }
1.137 tobias 499: cvs_parsed = 1;
1.15 deraadt 500: } else {
1.137 tobias 501: tcmdp = cvs_findcmd(p);
502: if (tcmdp == NULL && verbosity == 2)
503: cvs_log(LP_NOTICE,
504: "unknown command `%s' in `%s:%d'",
505: p, rcpath, linenum);
506:
507: if (tcmdp != cmdp || cmd_parsed)
1.1 jfb 508: continue;
1.17 jfb 509:
1.138 tobias 510: if (lp != NULL) {
511: lp++;
512: cmdp->cmd_defargs = xstrdup(lp);
513: }
1.137 tobias 514: cmd_parsed = 1;
1.1 jfb 515: }
516: }
1.133 tobias 517: if (lbuf != NULL)
518: xfree(lbuf);
1.98 joris 519:
1.1 jfb 520: if (ferror(fp)) {
1.23 xsa 521: cvs_log(LP_NOTICE, "failed to read line from `%s'", rcpath);
1.1 jfb 522: }
523:
524: (void)fclose(fp);
1.27 jfb 525: }
526:
527: /*
528: * cvs_var_set()
529: *
530: * Set the value of the variable <var> to <val>. If there is no such variable,
531: * a new entry is created, otherwise the old value is overwritten.
532: * Returns 0 on success, or -1 on failure.
533: */
534: int
535: cvs_var_set(const char *var, const char *val)
536: {
537: const char *cp;
538: struct cvs_var *vp;
539:
1.97 deraadt 540: if (var == NULL || *var == '\0') {
1.27 jfb 541: cvs_log(LP_ERR, "no variable name");
542: return (-1);
543: }
544:
545: /* sanity check on the name */
546: for (cp = var; *cp != '\0'; cp++)
547: if (!isalnum(*cp) && (*cp != '_')) {
548: cvs_log(LP_ERR,
549: "variable name `%s' contains invalid characters",
550: var);
551: return (-1);
552: }
553:
554: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
555: if (strcmp(vp->cv_name, var) == 0)
556: break;
557:
558: if (vp == NULL) {
1.96 ray 559: vp = xcalloc(1, sizeof(*vp));
1.27 jfb 560:
1.88 joris 561: vp->cv_name = xstrdup(var);
1.27 jfb 562: TAILQ_INSERT_TAIL(&cvs_variables, vp, cv_link);
563:
564: } else /* free the previous value */
1.88 joris 565: xfree(vp->cv_val);
1.27 jfb 566:
1.141 tobias 567: vp->cv_val = xstrdup(val);
1.27 jfb 568:
569: return (0);
570: }
571:
572: /*
1.118 otto 573: * cvs_var_unset()
1.27 jfb 574: *
575: * Remove any entry for the variable <var>.
576: * Returns 0 on success, or -1 on failure.
577: */
578: int
579: cvs_var_unset(const char *var)
580: {
581: struct cvs_var *vp;
582:
583: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
584: if (strcmp(vp->cv_name, var) == 0) {
585: TAILQ_REMOVE(&cvs_variables, vp, cv_link);
1.88 joris 586: xfree(vp->cv_name);
587: xfree(vp->cv_val);
588: xfree(vp);
1.27 jfb 589: return (0);
590: }
591:
592: return (-1);
593: }
594:
595: /*
596: * cvs_var_get()
597: *
598: * Get the value associated with the variable <var>. Returns a pointer to the
599: * value string on success, or NULL if the variable does not exist.
600: */
601:
1.75 xsa 602: const char *
1.27 jfb 603: cvs_var_get(const char *var)
604: {
605: struct cvs_var *vp;
606:
607: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
608: if (strcmp(vp->cv_name, var) == 0)
609: return (vp->cv_val);
610:
611: return (NULL);
1.1 jfb 612: }
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