Annotation of src/usr.bin/cvs/cvs.c, Revision 1.138
1.138 ! tobias 1: /* $OpenBSD: cvs.c,v 1.137 2007/09/19 13:36:32 tobias 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"
1.1 jfb 40:
41: extern char *__progname;
42:
43: /* verbosity level: 0 = really quiet, 1 = quiet, 2 = verbose */
1.105 reyk 44: int verbosity = 1;
1.1 jfb 45:
46: /* compression level used with zlib, 0 meaning no compression taking place */
1.98 joris 47: int cvs_compress = 0;
48: int cvs_readrc = 1; /* read .cvsrc on startup */
49: int cvs_trace = 0;
50: int cvs_nolog = 0;
51: int cvs_readonly = 0;
1.111 xsa 52: int cvs_readonlyfs = 0;
1.98 joris 53: int cvs_nocase = 0; /* set to 1 to disable filename case sensitivity */
54: int cvs_noexec = 0; /* set to 1 to disable disk operations (-n option) */
55: int cvs_error = -1; /* set to the correct error code on failure */
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_command; /* name of the command we are running */
63: char *cvs_rootstr;
64: char *cvs_rsh = CVS_RSH_DEFAULT;
65: char *cvs_editor = CVS_EDITOR_DEFAULT;
66: char *cvs_homedir = NULL;
67: char *cvs_msg = NULL;
68: char *cvs_tmpdir = CVS_TMPDIR_DEFAULT;
1.13 krapht 69:
1.98 joris 70: struct cvsroot *current_cvsroot = NULL;
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:
82: void
83: sighandler(int sig)
84: {
85: sig_received = sig;
86:
87: switch (sig) {
88: case SIGINT:
89: case SIGTERM:
1.107 joris 90: case SIGPIPE:
1.98 joris 91: cvs_quit = 1;
92: break;
93: default:
94: break;
95: }
96: }
97:
98: void
99: cvs_cleanup(void)
100: {
101: cvs_log(LP_TRACE, "cvs_cleanup: removing locks");
102: cvs_worklist_run(&repo_locks, cvs_worklist_unlink);
103:
104: cvs_log(LP_TRACE, "cvs_cleanup: removing temp files");
105: cvs_worklist_run(&temp_files, cvs_worklist_unlink);
1.106 joris 106:
1.124 ray 107: if (cvs_server_path != NULL) {
1.106 joris 108: if (cvs_rmdir(cvs_server_path) == -1)
109: cvs_log(LP_ERR,
110: "warning: failed to remove server directory: %s",
111: cvs_server_path);
112: xfree(cvs_server_path);
1.124 ray 113: cvs_server_path = NULL;
1.106 joris 114: }
1.98 joris 115: }
116:
1.121 xsa 117: __dead void
1.1 jfb 118: usage(void)
119: {
1.121 xsa 120: (void)fprintf(stderr,
1.127 ray 121: "usage: %s [-flnQqRrtVvw] [-d root] [-e editor] [-s var=val]\n"
1.129 sobrado 122: " [-T tmpdir] [-z level] command ...\n", __progname);
1.121 xsa 123: exit(1);
1.1 jfb 124: }
125:
126: int
127: main(int argc, char **argv)
128: {
1.17 jfb 129: char *envstr, *cmd_argv[CVS_CMD_MAXARG], **targv;
130: int i, ret, cmd_argc;
1.1 jfb 131: struct cvs_cmd *cmdp;
1.79 xsa 132: struct passwd *pw;
1.80 xsa 133: struct stat st;
1.100 joris 134: char fpath[MAXPATHLEN];
1.87 joris 135:
136: tzset();
1.1 jfb 137:
1.27 jfb 138: TAILQ_INIT(&cvs_variables);
1.98 joris 139: SLIST_INIT(&repo_locks);
140: SLIST_INIT(&temp_files);
1.1 jfb 141:
142: /* check environment so command-line options override it */
143: if ((envstr = getenv("CVS_RSH")) != NULL)
144: cvs_rsh = envstr;
145:
146: if (((envstr = getenv("CVSEDITOR")) != NULL) ||
147: ((envstr = getenv("VISUAL")) != NULL) ||
148: ((envstr = getenv("EDITOR")) != NULL))
149: cvs_editor = envstr;
1.76 xsa 150:
151: if ((envstr = getenv("CVSREAD")) != NULL)
152: cvs_readonly = 1;
1.1 jfb 153:
1.111 xsa 154: if ((envstr = getenv("CVSREADONLYFS")) != NULL) {
155: cvs_readonlyfs = 1;
156: cvs_nolog = 1;
157: }
158:
1.79 xsa 159: if ((cvs_homedir = getenv("HOME")) == NULL) {
1.131 tobias 160: if ((pw = getpwuid(getuid())) != NULL)
161: cvs_homedir = pw->pw_dir;
162:
1.85 reyk 163: }
1.79 xsa 164:
1.80 xsa 165: if ((envstr = getenv("TMPDIR")) != NULL)
166: cvs_tmpdir = envstr;
167:
1.17 jfb 168: ret = cvs_getopt(argc, argv);
169:
170: argc -= ret;
171: argv += ret;
1.121 xsa 172: if (argc == 0)
1.17 jfb 173: usage();
1.80 xsa 174:
1.17 jfb 175: cvs_command = argv[0];
176:
1.80 xsa 177: /*
178: * check the tmp dir, either specified through
179: * the environment variable TMPDIR, or via
180: * the global option -T <dir>
181: */
1.94 xsa 182: if (stat(cvs_tmpdir, &st) == -1)
183: fatal("stat failed on `%s': %s", cvs_tmpdir, strerror(errno));
184: else if (!S_ISDIR(st.st_mode))
185: fatal("`%s' is not valid temporary directory", cvs_tmpdir);
1.80 xsa 186:
1.132 tobias 187: cmdp = cvs_findcmd(cvs_command);
188: if (cmdp == NULL) {
189: fprintf(stderr, "Unknown command: `%s'\n\n", cvs_command);
190: fprintf(stderr, "CVS commands are:\n");
191: for (i = 0; cvs_cdt[i] != NULL; i++)
192: fprintf(stderr, "\t%-16s%s\n",
193: cvs_cdt[i]->cmd_name, cvs_cdt[i]->cmd_descr);
194: exit(1);
195: }
196:
1.131 tobias 197: if (cvs_readrc == 1 && cvs_homedir != NULL) {
1.17 jfb 198: cvs_read_rcfile();
199:
200: if (cvs_defargs != NULL) {
1.94 xsa 201: if ((targv = cvs_makeargv(cvs_defargs, &i)) == NULL)
202: fatal("failed to load default arguments to %s",
1.17 jfb 203: __progname);
204:
205: cvs_getopt(i, targv);
206: cvs_freeargv(targv, i);
1.88 joris 207: xfree(targv);
1.17 jfb 208: }
209: }
210:
211: /* setup signal handlers */
1.98 joris 212: signal(SIGTERM, sighandler);
213: signal(SIGINT, sighandler);
214: signal(SIGHUP, sighandler);
215: signal(SIGABRT, sighandler);
216: signal(SIGALRM, sighandler);
217: signal(SIGPIPE, sighandler);
1.17 jfb 218:
219: cvs_cmdop = cmdp->cmd_op;
220:
221: cmd_argc = 0;
222: memset(cmd_argv, 0, sizeof(cmd_argv));
223:
224: cmd_argv[cmd_argc++] = argv[0];
225: if (cmdp->cmd_defargs != NULL) {
226: /* transform into a new argument vector */
227: ret = cvs_getargv(cmdp->cmd_defargs, cmd_argv + 1,
228: CVS_CMD_MAXARG - 1);
1.94 xsa 229: if (ret < 0)
230: fatal("main: cvs_getargv failed");
231:
1.17 jfb 232: cmd_argc += ret;
233: }
1.98 joris 234:
1.128 ray 235: if (argc + cmd_argc >= CVS_CMD_MAXARG)
236: fatal("main: too many arguments for `%s'", cmd_argv[0]);
1.17 jfb 237: for (ret = 1; ret < argc; ret++)
238: cmd_argv[cmd_argc++] = argv[ret];
239:
1.98 joris 240: cvs_file_init();
241:
1.106 joris 242: if (cvs_cmdop == CVS_OP_SERVER) {
1.130 tobias 243: cmdp->cmd(cmd_argc, cmd_argv);
244: cvs_cleanup();
245: return (0);
1.106 joris 246: }
247:
1.98 joris 248: if ((current_cvsroot = cvsroot_get(".")) == NULL) {
1.71 xsa 249: cvs_log(LP_ERR,
1.98 joris 250: "No CVSROOT specified! Please use the '-d' option");
1.102 david 251: fatal("or set the CVSROOT environment variable.");
1.17 jfb 252: }
253:
1.106 joris 254: if (current_cvsroot->cr_method != CVS_METHOD_LOCAL) {
255: cmdp->cmd(cmd_argc, cmd_argv);
256: cvs_cleanup();
257: return (0);
258: }
1.100 joris 259:
1.116 xsa 260: (void)xsnprintf(fpath, sizeof(fpath), "%s/%s",
261: current_cvsroot->cr_dir, CVS_PATH_ROOT);
1.110 xsa 262:
1.103 xsa 263: if (stat(fpath, &st) == -1 && cvs_cmdop != CVS_OP_INIT) {
1.100 joris 264: if (errno == ENOENT)
1.104 joris 265: fatal("repository '%s' does not exist",
1.100 joris 266: current_cvsroot->cr_dir);
267: else
268: fatal("%s: %s", current_cvsroot->cr_dir,
269: strerror(errno));
270: } else {
271: if (!S_ISDIR(st.st_mode))
272: fatal("'%s' is not a directory",
273: current_cvsroot->cr_dir);
274: }
1.99 joris 275:
1.103 xsa 276: if (cvs_cmdop != CVS_OP_INIT)
277: cvs_parse_configfile();
1.99 joris 278:
279: umask(cvs_umask);
1.98 joris 280:
281: cmdp->cmd(cmd_argc, cmd_argv);
282: cvs_cleanup();
1.17 jfb 283:
1.98 joris 284: return (0);
1.17 jfb 285: }
286:
287: int
288: cvs_getopt(int argc, char **argv)
289: {
290: int ret;
291: char *ep;
1.115 joris 292: const char *errstr;
1.17 jfb 293:
1.122 xsa 294: while ((ret = getopt(argc, argv, "b:d:e:flnQqRrs:T:tVvwxz:")) != -1) {
1.1 jfb 295: switch (ret) {
1.11 jfb 296: case 'b':
297: /*
298: * We do not care about the bin directory for RCS files
299: * as this program has no dependencies on RCS programs,
300: * so it is only here for backwards compatibility.
301: */
302: cvs_log(LP_NOTICE, "the -b argument is obsolete");
303: break;
1.1 jfb 304: case 'd':
305: cvs_rootstr = optarg;
306: break;
307: case 'e':
308: cvs_editor = optarg;
309: break;
310: case 'f':
1.17 jfb 311: cvs_readrc = 0;
1.1 jfb 312: break;
313: case 'l':
314: cvs_nolog = 1;
315: break;
316: case 'n':
1.65 xsa 317: cvs_noexec = 1;
1.112 xsa 318: cvs_nolog = 1;
1.1 jfb 319: break;
320: case 'Q':
321: verbosity = 0;
322: break;
323: case 'q':
1.105 reyk 324: /*
325: * Be quiet. This is the default in OpenCVS.
326: */
1.111 xsa 327: break;
328: case 'R':
329: cvs_readonlyfs = 1;
330: cvs_nolog = 1;
1.1 jfb 331: break;
332: case 'r':
333: cvs_readonly = 1;
334: break;
1.27 jfb 335: case 's':
336: ep = strchr(optarg, '=');
337: if (ep == NULL) {
338: cvs_log(LP_ERR, "no = in variable assignment");
1.98 joris 339: exit(1);
1.27 jfb 340: }
341: *(ep++) = '\0';
342: if (cvs_var_set(optarg, ep) < 0)
1.98 joris 343: exit(1);
1.80 xsa 344: break;
345: case 'T':
346: cvs_tmpdir = optarg;
1.27 jfb 347: break;
1.1 jfb 348: case 't':
349: cvs_trace = 1;
1.105 reyk 350: break;
351: case 'V':
352: /* don't override -Q */
353: if (verbosity)
354: verbosity = 2;
1.1 jfb 355: break;
356: case 'v':
357: printf("%s\n", CVS_VERSION);
358: exit(0);
359: /* NOTREACHED */
1.83 xsa 360: break;
361: case 'w':
362: cvs_readonly = 0;
1.11 jfb 363: break;
364: case 'x':
365: /*
366: * Kerberos encryption support, kept for compatibility
367: */
1.1 jfb 368: break;
369: case 'z':
1.115 joris 370: cvs_compress = strtonum(optarg, 0, 9, &errstr);
371: if (errstr != NULL)
372: fatal("cvs_compress: %s", errstr);
1.1 jfb 373: break;
374: default:
375: usage();
1.121 xsa 376: /* NOTREACHED */
1.1 jfb 377: }
378: }
379:
1.17 jfb 380: ret = optind;
1.1 jfb 381: optind = 1;
1.17 jfb 382: optreset = 1; /* for next call */
1.12 jfb 383:
1.1 jfb 384: return (ret);
385: }
386:
387: /*
1.17 jfb 388: * cvs_read_rcfile()
1.1 jfb 389: *
390: * Read the CVS `.cvsrc' file in the user's home directory. If the file
391: * exists, it should contain a list of arguments that should always be given
392: * implicitly to the specified commands.
393: */
1.42 joris 394: static void
1.17 jfb 395: cvs_read_rcfile(void)
1.1 jfb 396: {
1.133 tobias 397: char rcpath[MAXPATHLEN], *buf, *lbuf, *lp, *p;
1.137 tobias 398: int cmd_parsed, cvs_parsed, i, linenum;
1.135 tobias 399: size_t len, pos;
1.137 tobias 400: struct cvs_cmd *cmdp, *tcmdp;
1.1 jfb 401: FILE *fp;
402:
1.116 xsa 403: linenum = 0;
404:
405: i = snprintf(rcpath, MAXPATHLEN, "%s/%s", cvs_homedir, CVS_PATH_RC);
406: if (i < 0 || i >= MAXPATHLEN) {
1.108 xsa 407: cvs_log(LP_ERRNO, "%s", rcpath);
1.54 xsa 408: return;
409: }
1.1 jfb 410:
411: fp = fopen(rcpath, "r");
412: if (fp == NULL) {
413: if (errno != ENOENT)
414: cvs_log(LP_NOTICE, "failed to open `%s': %s", rcpath,
415: strerror(errno));
416: return;
417: }
418:
1.137 tobias 419: cmdp = cvs_findcmd(cvs_command);
420: if (cmdp == NULL)
421: fatal("unknown command `%s'", cvs_command);
422:
423: cmd_parsed = cvs_parsed = 0;
1.133 tobias 424: lbuf = NULL;
425: while ((buf = fgetln(fp, &len)) != NULL) {
426: if (buf[len - 1] == '\n') {
427: buf[len - 1] = '\0';
428: } else {
429: lbuf = xmalloc(len + 1);
430: memcpy(lbuf, buf, len);
431: lbuf[len] = '\0';
432: buf = lbuf;
433: }
434:
1.23 xsa 435: linenum++;
1.17 jfb 436:
1.70 joris 437: /* skip any whitespaces */
1.133 tobias 438: p = buf;
1.70 joris 439: while (*p == ' ')
1.95 deraadt 440: p++;
1.70 joris 441:
1.134 tobias 442: /*
443: * Allow comments.
444: * GNU cvs stops parsing a line if it encounters a \t
445: * in front of a command, stick at this behaviour for
446: * compatibility.
447: */
448: if (*p == '#' || *p == '\t')
1.70 joris 449: continue;
450:
1.135 tobias 451: pos = strcspn(p, " \t");
452: if (pos == strlen(p)) {
1.138 ! tobias 453: lp = NULL;
1.135 tobias 454: } else {
455: lp = p + pos;
456: *lp = '\0';
457: }
458:
1.137 tobias 459: if (strcmp(p, "cvs") == 0 && !cvs_parsed) {
1.17 jfb 460: /*
461: * Global default options. In the case of cvs only,
462: * we keep the 'cvs' string as first argument because
463: * getopt() does not like starting at index 0 for
464: * argument processing.
465: */
1.138 ! tobias 466: if (lp != NULL) {
! 467: *lp = ' ';
! 468: cvs_defargs = xstrdup(p);
! 469: }
1.137 tobias 470: cvs_parsed = 1;
1.15 deraadt 471: } else {
1.137 tobias 472: tcmdp = cvs_findcmd(p);
473: if (tcmdp == NULL && verbosity == 2)
474: cvs_log(LP_NOTICE,
475: "unknown command `%s' in `%s:%d'",
476: p, rcpath, linenum);
477:
478: if (tcmdp != cmdp || cmd_parsed)
1.1 jfb 479: continue;
1.17 jfb 480:
1.138 ! tobias 481: if (lp != NULL) {
! 482: lp++;
! 483: cmdp->cmd_defargs = xstrdup(lp);
! 484: }
1.137 tobias 485: cmd_parsed = 1;
1.1 jfb 486: }
487: }
1.133 tobias 488: if (lbuf != NULL)
489: xfree(lbuf);
1.98 joris 490:
1.1 jfb 491: if (ferror(fp)) {
1.23 xsa 492: cvs_log(LP_NOTICE, "failed to read line from `%s'", rcpath);
1.1 jfb 493: }
494:
495: (void)fclose(fp);
1.27 jfb 496: }
497:
498: /*
499: * cvs_var_set()
500: *
501: * Set the value of the variable <var> to <val>. If there is no such variable,
502: * a new entry is created, otherwise the old value is overwritten.
503: * Returns 0 on success, or -1 on failure.
504: */
505: int
506: cvs_var_set(const char *var, const char *val)
507: {
508: char *valcp;
509: const char *cp;
510: struct cvs_var *vp;
511:
1.97 deraadt 512: if (var == NULL || *var == '\0') {
1.27 jfb 513: cvs_log(LP_ERR, "no variable name");
514: return (-1);
515: }
516:
517: /* sanity check on the name */
518: for (cp = var; *cp != '\0'; cp++)
519: if (!isalnum(*cp) && (*cp != '_')) {
520: cvs_log(LP_ERR,
521: "variable name `%s' contains invalid characters",
522: var);
523: return (-1);
524: }
525:
526: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
527: if (strcmp(vp->cv_name, var) == 0)
528: break;
529:
1.88 joris 530: valcp = xstrdup(val);
1.27 jfb 531: if (vp == NULL) {
1.96 ray 532: vp = xcalloc(1, sizeof(*vp));
1.27 jfb 533:
1.88 joris 534: vp->cv_name = xstrdup(var);
1.27 jfb 535: TAILQ_INSERT_TAIL(&cvs_variables, vp, cv_link);
536:
537: } else /* free the previous value */
1.88 joris 538: xfree(vp->cv_val);
1.27 jfb 539:
540: vp->cv_val = valcp;
541:
542: return (0);
543: }
544:
545: /*
1.118 otto 546: * cvs_var_unset()
1.27 jfb 547: *
548: * Remove any entry for the variable <var>.
549: * Returns 0 on success, or -1 on failure.
550: */
551: int
552: cvs_var_unset(const char *var)
553: {
554: struct cvs_var *vp;
555:
556: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
557: if (strcmp(vp->cv_name, var) == 0) {
558: TAILQ_REMOVE(&cvs_variables, vp, cv_link);
1.88 joris 559: xfree(vp->cv_name);
560: xfree(vp->cv_val);
561: xfree(vp);
1.27 jfb 562: return (0);
563: }
564:
565: return (-1);
566: }
567:
568: /*
569: * cvs_var_get()
570: *
571: * Get the value associated with the variable <var>. Returns a pointer to the
572: * value string on success, or NULL if the variable does not exist.
573: */
574:
1.75 xsa 575: const char *
1.27 jfb 576: cvs_var_get(const char *var)
577: {
578: struct cvs_var *vp;
579:
580: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
581: if (strcmp(vp->cv_name, var) == 0)
582: return (vp->cv_val);
583:
584: return (NULL);
1.1 jfb 585: }
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