Annotation of src/usr.bin/cvs/cvs.c, Revision 1.75
1.75 ! xsa 1: /* $OpenBSD: cvs.c,v 1.74 2005/07/24 17:48:05 xsa Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
1.18 tedu 4: * All rights reserved.
1.1 jfb 5: *
1.18 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: *
1.18 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
1.18 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
1.18 tedu 24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1 jfb 25: */
26:
27: #include <sys/types.h>
28: #include <sys/wait.h>
29:
1.68 xsa 30: #include <ctype.h>
1.1 jfb 31: #include <err.h>
1.68 xsa 32: #include <errno.h>
1.1 jfb 33: #include <pwd.h>
1.68 xsa 34: #include <signal.h>
1.1 jfb 35: #include <stdio.h>
36: #include <stdlib.h>
1.68 xsa 37: #include <string.h>
1.1 jfb 38: #include <unistd.h>
39:
40: #include "cvs.h"
41: #include "log.h"
1.8 jfb 42: #include "file.h"
1.44 jfb 43: #include "strtab.h"
1.1 jfb 44:
45:
46: extern char *__progname;
47:
48:
49: /* verbosity level: 0 = really quiet, 1 = quiet, 2 = verbose */
50: int verbosity = 2;
51:
52: /* compression level used with zlib, 0 meaning no compression taking place */
53: int cvs_compress = 0;
1.17 jfb 54: int cvs_readrc = 1; /* read .cvsrc on startup */
1.1 jfb 55: int cvs_trace = 0;
56: int cvs_nolog = 0;
57: int cvs_readonly = 0;
1.17 jfb 58: int cvs_nocase = 0; /* set to 1 to disable filename case sensitivity */
1.65 xsa 59: int cvs_noexec = 0; /* set to 1 to disable disk operations (-n option) */
1.73 joris 60: int cvs_error = -1; /* set to the correct error code on failure */
1.17 jfb 61: char *cvs_defargs; /* default global arguments from .cvsrc */
62: char *cvs_command; /* name of the command we are running */
1.6 jfb 63: int cvs_cmdop;
1.1 jfb 64: char *cvs_rootstr;
65: char *cvs_rsh = CVS_RSH_DEFAULT;
66: char *cvs_editor = CVS_EDITOR_DEFAULT;
1.69 joris 67: char *cvs_repo_base = NULL;
1.13 krapht 68: char *cvs_msg = NULL;
69:
1.10 jfb 70: /* hierarchy of all the files affected by the command */
71: CVSFILE *cvs_files;
72:
1.27 jfb 73: static TAILQ_HEAD(, cvs_var) cvs_variables;
74:
1.1 jfb 75:
1.75 ! xsa 76: void usage(void);
! 77: static void cvs_read_rcfile(void);
! 78: int cvs_getopt(int, char **);
1.1 jfb 79:
80: /*
81: * usage()
82: *
83: * Display usage information.
84: */
85: void
86: usage(void)
87: {
88: fprintf(stderr,
1.66 joris 89: "Usage: %s [-flnQqtv] [-d root] [-e editor] [-s var=val] [-z level] "
1.27 jfb 90: "command [...]\n", __progname);
1.1 jfb 91: }
92:
93:
94: int
95: main(int argc, char **argv)
96: {
1.17 jfb 97: char *envstr, *cmd_argv[CVS_CMD_MAXARG], **targv;
98: int i, ret, cmd_argc;
1.1 jfb 99: struct cvs_cmd *cmdp;
100:
1.27 jfb 101: TAILQ_INIT(&cvs_variables);
102:
1.1 jfb 103: if (cvs_log_init(LD_STD, 0) < 0)
104: err(1, "failed to initialize logging");
105:
106: /* by default, be very verbose */
107: (void)cvs_log_filter(LP_FILTER_UNSET, LP_INFO);
108:
109: #ifdef DEBUG
110: (void)cvs_log_filter(LP_FILTER_UNSET, LP_DEBUG);
111: #endif
112:
1.44 jfb 113: cvs_strtab_init();
114:
1.1 jfb 115: /* check environment so command-line options override it */
116: if ((envstr = getenv("CVS_RSH")) != NULL)
117: cvs_rsh = envstr;
118:
119: if (((envstr = getenv("CVSEDITOR")) != NULL) ||
120: ((envstr = getenv("VISUAL")) != NULL) ||
121: ((envstr = getenv("EDITOR")) != NULL))
122: cvs_editor = envstr;
123:
1.17 jfb 124: ret = cvs_getopt(argc, argv);
125:
126: argc -= ret;
127: argv += ret;
128: if (argc == 0) {
129: usage();
1.49 joris 130: exit(1);
1.17 jfb 131: }
132: cvs_command = argv[0];
133:
1.74 xsa 134: if (cvs_readrc == 1) {
1.17 jfb 135: cvs_read_rcfile();
136:
137: if (cvs_defargs != NULL) {
138: targv = cvs_makeargv(cvs_defargs, &i);
139: if (targv == NULL) {
140: cvs_log(LP_ERR,
141: "failed to load default arguments to %s",
142: __progname);
1.47 xsa 143: exit(1);
1.17 jfb 144: }
145:
146: cvs_getopt(i, targv);
147: cvs_freeargv(targv, i);
148: free(targv);
149: }
150: }
151:
152: /* setup signal handlers */
153: signal(SIGPIPE, SIG_IGN);
154:
1.40 jfb 155: if (cvs_file_init() < 0) {
156: cvs_log(LP_ERR, "failed to initialize file support");
157: exit(1);
158: }
1.17 jfb 159:
160: ret = -1;
161:
162: cmdp = cvs_findcmd(cvs_command);
163: if (cmdp == NULL) {
164: fprintf(stderr, "Unknown command: `%s'\n\n", cvs_command);
165: fprintf(stderr, "CVS commands are:\n");
1.67 jfb 166: for (i = 0; cvs_cdt[i] != NULL; i++)
1.17 jfb 167: fprintf(stderr, "\t%-16s%s\n",
1.67 jfb 168: cvs_cdt[i]->cmd_name, cvs_cdt[i]->cmd_descr);
169: exit(CVS_EX_USAGE);
1.17 jfb 170: }
171:
172: cvs_cmdop = cmdp->cmd_op;
173:
174: cmd_argc = 0;
175: memset(cmd_argv, 0, sizeof(cmd_argv));
176:
177: cmd_argv[cmd_argc++] = argv[0];
178: if (cmdp->cmd_defargs != NULL) {
179: /* transform into a new argument vector */
180: ret = cvs_getargv(cmdp->cmd_defargs, cmd_argv + 1,
181: CVS_CMD_MAXARG - 1);
182: if (ret < 0) {
183: cvs_log(LP_ERRNO, "failed to generate argument vector "
184: "from default arguments");
1.47 xsa 185: exit(1);
1.17 jfb 186: }
187: cmd_argc += ret;
188: }
189: for (ret = 1; ret < argc; ret++)
190: cmd_argv[cmd_argc++] = argv[ret];
191:
1.45 joris 192: ret = cvs_startcmd(cmdp, cmd_argc, cmd_argv);
1.51 joris 193: switch (ret) {
194: case CVS_EX_USAGE:
1.56 jfb 195: fprintf(stderr, "Usage: %s %s %s\n", __progname, cvs_command,
196: cmdp->cmd_synopsis);
1.51 joris 197: break;
198: case CVS_EX_DATA:
1.55 jfb 199: cvs_log(LP_ABORT, "internal data error");
1.51 joris 200: break;
201: case CVS_EX_PROTO:
1.55 jfb 202: cvs_log(LP_ABORT, "protocol error");
1.51 joris 203: break;
204: case CVS_EX_FILE:
1.55 jfb 205: cvs_log(LP_ABORT, "an operation on a file or directory failed");
1.60 jfb 206: break;
207: case CVS_EX_BADROOT:
1.71 xsa 208: /* match GNU CVS output, thus the LP_ERR and LP_ABORT codes. */
209: cvs_log(LP_ERR,
1.60 jfb 210: "No CVSROOT specified! Please use the `-d' option");
211: cvs_log(LP_ABORT,
212: "or set the CVSROOT enviroment variable.");
1.73 joris 213: break;
214: case CVS_EX_ERR:
215: cvs_log(LP_ABORT, "yeah, we failed, and we don't know why");
1.51 joris 216: break;
217: default:
218: break;
1.17 jfb 219: }
220:
221: if (cvs_files != NULL)
222: cvs_file_free(cvs_files);
1.33 jfb 223: if (cvs_msg != NULL)
224: free(cvs_msg);
1.44 jfb 225:
226: cvs_strtab_cleanup();
1.17 jfb 227:
228: return (ret);
229: }
230:
231:
232: int
233: cvs_getopt(int argc, char **argv)
234: {
235: int ret;
236: char *ep;
237:
1.27 jfb 238: while ((ret = getopt(argc, argv, "b:d:e:fHlnQqrs:tvz:")) != -1) {
1.1 jfb 239: switch (ret) {
1.11 jfb 240: case 'b':
241: /*
242: * We do not care about the bin directory for RCS files
243: * as this program has no dependencies on RCS programs,
244: * so it is only here for backwards compatibility.
245: */
246: cvs_log(LP_NOTICE, "the -b argument is obsolete");
247: break;
1.1 jfb 248: case 'd':
249: cvs_rootstr = optarg;
250: break;
251: case 'e':
252: cvs_editor = optarg;
253: break;
254: case 'f':
1.17 jfb 255: cvs_readrc = 0;
1.1 jfb 256: break;
257: case 'l':
258: cvs_nolog = 1;
259: break;
260: case 'n':
1.65 xsa 261: cvs_noexec = 1;
1.1 jfb 262: break;
263: case 'Q':
264: verbosity = 0;
265: break;
266: case 'q':
267: /* don't override -Q */
268: if (verbosity > 1)
269: verbosity = 1;
270: break;
271: case 'r':
272: cvs_readonly = 1;
273: break;
1.27 jfb 274: case 's':
275: ep = strchr(optarg, '=');
276: if (ep == NULL) {
277: cvs_log(LP_ERR, "no = in variable assignment");
1.49 joris 278: exit(1);
1.27 jfb 279: }
280: *(ep++) = '\0';
281: if (cvs_var_set(optarg, ep) < 0)
1.49 joris 282: exit(1);
1.27 jfb 283: break;
1.1 jfb 284: case 't':
1.24 jfb 285: (void)cvs_log_filter(LP_FILTER_UNSET, LP_TRACE);
1.1 jfb 286: cvs_trace = 1;
287: break;
288: case 'v':
289: printf("%s\n", CVS_VERSION);
290: exit(0);
291: /* NOTREACHED */
1.11 jfb 292: break;
293: case 'x':
294: /*
295: * Kerberos encryption support, kept for compatibility
296: */
1.1 jfb 297: break;
298: case 'z':
1.18 tedu 299: cvs_compress = (int)strtol(optarg, &ep, 10);
1.1 jfb 300: if (*ep != '\0')
301: errx(1, "error parsing compression level");
302: if (cvs_compress < 0 || cvs_compress > 9)
303: errx(1, "gzip compression level must be "
304: "between 0 and 9");
305: break;
306: default:
307: usage();
1.49 joris 308: exit(1);
1.1 jfb 309: }
310: }
311:
1.17 jfb 312: ret = optind;
1.1 jfb 313: optind = 1;
1.17 jfb 314: optreset = 1; /* for next call */
1.12 jfb 315:
1.1 jfb 316: return (ret);
317: }
318:
319:
320: /*
1.17 jfb 321: * cvs_read_rcfile()
1.1 jfb 322: *
323: * Read the CVS `.cvsrc' file in the user's home directory. If the file
324: * exists, it should contain a list of arguments that should always be given
325: * implicitly to the specified commands.
326: */
1.42 joris 327: static void
1.17 jfb 328: cvs_read_rcfile(void)
1.1 jfb 329: {
1.70 joris 330: char rcpath[MAXPATHLEN], linebuf[128], *lp, *p;
1.54 xsa 331: int l, linenum = 0;
1.17 jfb 332: size_t len;
1.1 jfb 333: struct cvs_cmd *cmdp;
334: struct passwd *pw;
335: FILE *fp;
336:
337: pw = getpwuid(getuid());
338: if (pw == NULL) {
339: cvs_log(LP_NOTICE, "failed to get user's password entry");
340: return;
341: }
342:
1.54 xsa 343: l = snprintf(rcpath, sizeof(rcpath), "%s/%s", pw->pw_dir, CVS_PATH_RC);
344: if (l == -1 || l >= (int)sizeof(rcpath)) {
345: errno = ENAMETOOLONG;
346: cvs_log(LP_ERRNO, "%s", rcpath);
347: return;
348: }
1.1 jfb 349:
350: fp = fopen(rcpath, "r");
351: if (fp == NULL) {
352: if (errno != ENOENT)
353: cvs_log(LP_NOTICE, "failed to open `%s': %s", rcpath,
354: strerror(errno));
355: return;
356: }
357:
358: while (fgets(linebuf, sizeof(linebuf), fp) != NULL) {
1.23 xsa 359: linenum++;
1.17 jfb 360: if ((len = strlen(linebuf)) == 0)
361: continue;
362: if (linebuf[len - 1] != '\n') {
1.23 xsa 363: cvs_log(LP_WARN, "line too long in `%s:%d'", rcpath,
364: linenum);
1.17 jfb 365: break;
366: }
367: linebuf[--len] = '\0';
368:
1.70 joris 369: /* skip any whitespaces */
370: p = linebuf;
371: while (*p == ' ')
372: *p++;
373:
374: /* allow comments */
375: if (*p == '#')
376: continue;
377:
378: lp = strchr(p, ' ');
1.1 jfb 379: if (lp == NULL)
1.17 jfb 380: continue; /* ignore lines with no arguments */
381: *lp = '\0';
1.70 joris 382: if (strcmp(p, "cvs") == 0) {
1.17 jfb 383: /*
384: * Global default options. In the case of cvs only,
385: * we keep the 'cvs' string as first argument because
386: * getopt() does not like starting at index 0 for
387: * argument processing.
388: */
389: *lp = ' ';
1.70 joris 390: cvs_defargs = strdup(p);
1.17 jfb 391: if (cvs_defargs == NULL)
392: cvs_log(LP_ERRNO,
393: "failed to copy global arguments");
1.15 deraadt 394: } else {
1.17 jfb 395: lp++;
1.70 joris 396: cmdp = cvs_findcmd(p);
1.1 jfb 397: if (cmdp == NULL) {
398: cvs_log(LP_NOTICE,
1.25 xsa 399: "unknown command `%s' in `%s:%d'",
1.70 joris 400: p, rcpath, linenum);
1.1 jfb 401: continue;
402: }
1.17 jfb 403:
404: cmdp->cmd_defargs = strdup(lp);
405: if (cmdp->cmd_defargs == NULL)
406: cvs_log(LP_ERRNO,
407: "failed to copy default arguments for %s",
408: cmdp->cmd_name);
1.1 jfb 409: }
410: }
411: if (ferror(fp)) {
1.23 xsa 412: cvs_log(LP_NOTICE, "failed to read line from `%s'", rcpath);
1.1 jfb 413: }
414:
415: (void)fclose(fp);
1.27 jfb 416: }
417:
418:
419: /*
420: * cvs_var_set()
421: *
422: * Set the value of the variable <var> to <val>. If there is no such variable,
423: * a new entry is created, otherwise the old value is overwritten.
424: * Returns 0 on success, or -1 on failure.
425: */
426: int
427: cvs_var_set(const char *var, const char *val)
428: {
429: char *valcp;
430: const char *cp;
431: struct cvs_var *vp;
432:
433: if ((var == NULL) || (*var == '\0')) {
434: cvs_log(LP_ERR, "no variable name");
435: return (-1);
436: }
437:
438: /* sanity check on the name */
439: for (cp = var; *cp != '\0'; cp++)
440: if (!isalnum(*cp) && (*cp != '_')) {
441: cvs_log(LP_ERR,
442: "variable name `%s' contains invalid characters",
443: var);
444: return (-1);
445: }
446:
447: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
448: if (strcmp(vp->cv_name, var) == 0)
449: break;
450:
451: valcp = strdup(val);
452: if (valcp == NULL) {
453: cvs_log(LP_ERRNO, "failed to allocate variable");
454: return (-1);
455: }
456:
457: if (vp == NULL) {
458: vp = (struct cvs_var *)malloc(sizeof(*vp));
459: if (vp == NULL) {
460: cvs_log(LP_ERRNO, "failed to allocate variable");
461: free(valcp);
462: return (-1);
463: }
464: memset(vp, 0, sizeof(*vp));
465:
466: vp->cv_name = strdup(var);
467: if (vp->cv_name == NULL) {
468: cvs_log(LP_ERRNO, "failed to allocate variable");
469: free(valcp);
470: free(vp);
471: return (-1);
472: }
473:
474: TAILQ_INSERT_TAIL(&cvs_variables, vp, cv_link);
475:
476: } else /* free the previous value */
477: free(vp->cv_val);
478:
479: vp->cv_val = valcp;
480:
481: return (0);
482: }
483:
484:
485: /*
486: * cvs_var_set()
487: *
488: * Remove any entry for the variable <var>.
489: * Returns 0 on success, or -1 on failure.
490: */
491: int
492: cvs_var_unset(const char *var)
493: {
494: struct cvs_var *vp;
495:
496: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
497: if (strcmp(vp->cv_name, var) == 0) {
498: TAILQ_REMOVE(&cvs_variables, vp, cv_link);
499: free(vp->cv_name);
500: free(vp->cv_val);
501: free(vp);
502: return (0);
503: }
504:
505: return (-1);
506:
507: }
508:
509:
510: /*
511: * cvs_var_get()
512: *
513: * Get the value associated with the variable <var>. Returns a pointer to the
514: * value string on success, or NULL if the variable does not exist.
515: */
516:
1.75 ! xsa 517: const char *
1.27 jfb 518: cvs_var_get(const char *var)
519: {
520: struct cvs_var *vp;
521:
522: TAILQ_FOREACH(vp, &cvs_variables, cv_link)
523: if (strcmp(vp->cv_name, var) == 0)
524: return (vp->cv_val);
525:
526: return (NULL);
1.1 jfb 527: }
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