Commit | Line | Data |
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f79a3fd2 WJ |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)docmd.c 5.8 (Berkeley) 3/1/91"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | #include "defs.h" | |
39 | #include <setjmp.h> | |
40 | #include <netdb.h> | |
41 | ||
42 | FILE *lfp; /* log file for recording files updated */ | |
43 | struct subcmd *subcmds; /* list of sub-commands for current cmd */ | |
44 | jmp_buf env; | |
45 | ||
46 | void cleanup(), lostconn(); | |
47 | ||
48 | /* | |
49 | * Do the commands in cmds (initialized by yyparse). | |
50 | */ | |
51 | docmds(dhosts, argc, argv) | |
52 | char **dhosts; | |
53 | int argc; | |
54 | char **argv; | |
55 | { | |
56 | register struct cmd *c; | |
57 | register struct namelist *f; | |
58 | register char **cpp; | |
59 | extern struct cmd *cmds; | |
60 | ||
61 | signal(SIGHUP, cleanup); | |
62 | signal(SIGINT, cleanup); | |
63 | signal(SIGQUIT, cleanup); | |
64 | signal(SIGTERM, cleanup); | |
65 | ||
66 | for (c = cmds; c != NULL; c = c->c_next) { | |
67 | if (dhosts != NULL && *dhosts != NULL) { | |
68 | for (cpp = dhosts; *cpp; cpp++) | |
69 | if (strcmp(c->c_name, *cpp) == 0) | |
70 | goto fndhost; | |
71 | continue; | |
72 | } | |
73 | fndhost: | |
74 | if (argc) { | |
75 | for (cpp = argv; *cpp; cpp++) { | |
76 | if (c->c_label != NULL && | |
77 | strcmp(c->c_label, *cpp) == 0) { | |
78 | cpp = NULL; | |
79 | goto found; | |
80 | } | |
81 | for (f = c->c_files; f != NULL; f = f->n_next) | |
82 | if (strcmp(f->n_name, *cpp) == 0) | |
83 | goto found; | |
84 | } | |
85 | continue; | |
86 | } else | |
87 | cpp = NULL; | |
88 | found: | |
89 | switch (c->c_type) { | |
90 | case ARROW: | |
91 | doarrow(cpp, c->c_files, c->c_name, c->c_cmds); | |
92 | break; | |
93 | case DCOLON: | |
94 | dodcolon(cpp, c->c_files, c->c_name, c->c_cmds); | |
95 | break; | |
96 | default: | |
97 | fatal("illegal command type %d\n", c->c_type); | |
98 | } | |
99 | } | |
100 | closeconn(); | |
101 | } | |
102 | ||
103 | /* | |
104 | * Process commands for sending files to other machines. | |
105 | */ | |
106 | doarrow(filev, files, rhost, cmds) | |
107 | char **filev; | |
108 | struct namelist *files; | |
109 | char *rhost; | |
110 | struct subcmd *cmds; | |
111 | { | |
112 | register struct namelist *f; | |
113 | register struct subcmd *sc; | |
114 | register char **cpp; | |
115 | int n, ddir, opts = options; | |
116 | ||
117 | if (debug) | |
118 | printf("doarrow(%x, %s, %x)\n", files, rhost, cmds); | |
119 | ||
120 | if (files == NULL) { | |
121 | error("no files to be updated\n"); | |
122 | return; | |
123 | } | |
124 | ||
125 | subcmds = cmds; | |
126 | ddir = files->n_next != NULL; /* destination is a directory */ | |
127 | if (nflag) | |
128 | printf("updating host %s\n", rhost); | |
129 | else { | |
130 | if (setjmp(env)) | |
131 | goto done; | |
132 | signal(SIGPIPE, lostconn); | |
133 | if (!makeconn(rhost)) | |
134 | return; | |
135 | if ((lfp = fopen(tempfile, "w")) == NULL) { | |
136 | fatal("cannot open %s\n", tempfile); | |
137 | exit(1); | |
138 | } | |
139 | } | |
140 | for (f = files; f != NULL; f = f->n_next) { | |
141 | if (filev) { | |
142 | for (cpp = filev; *cpp; cpp++) | |
143 | if (strcmp(f->n_name, *cpp) == 0) | |
144 | goto found; | |
145 | if (!nflag) | |
146 | (void) fclose(lfp); | |
147 | continue; | |
148 | } | |
149 | found: | |
150 | n = 0; | |
151 | for (sc = cmds; sc != NULL; sc = sc->sc_next) { | |
152 | if (sc->sc_type != INSTALL) | |
153 | continue; | |
154 | n++; | |
155 | install(f->n_name, sc->sc_name, | |
156 | sc->sc_name == NULL ? 0 : ddir, sc->sc_options); | |
157 | opts = sc->sc_options; | |
158 | } | |
159 | if (n == 0) | |
160 | install(f->n_name, NULL, 0, options); | |
161 | } | |
162 | done: | |
163 | if (!nflag) { | |
164 | (void) signal(SIGPIPE, cleanup); | |
165 | (void) fclose(lfp); | |
166 | lfp = NULL; | |
167 | } | |
168 | for (sc = cmds; sc != NULL; sc = sc->sc_next) | |
169 | if (sc->sc_type == NOTIFY) | |
170 | notify(tempfile, rhost, sc->sc_args, 0); | |
171 | if (!nflag) { | |
172 | (void) unlink(tempfile); | |
173 | for (; ihead != NULL; ihead = ihead->nextp) { | |
174 | free(ihead); | |
175 | if ((opts & IGNLNKS) || ihead->count == 0) | |
176 | continue; | |
177 | log(lfp, "%s: Warning: missing links\n", | |
178 | ihead->pathname); | |
179 | } | |
180 | } | |
181 | } | |
182 | ||
183 | /* | |
184 | * Create a connection to the rdist server on the machine rhost. | |
185 | */ | |
186 | makeconn(rhost) | |
187 | char *rhost; | |
188 | { | |
189 | register char *ruser, *cp; | |
190 | static char *cur_host = NULL; | |
191 | static int port = -1; | |
192 | char tuser[20]; | |
193 | int n; | |
194 | extern char user[]; | |
195 | extern int userid; | |
196 | ||
197 | if (debug) | |
198 | printf("makeconn(%s)\n", rhost); | |
199 | ||
200 | if (cur_host != NULL && rem >= 0) { | |
201 | if (strcmp(cur_host, rhost) == 0) | |
202 | return(1); | |
203 | closeconn(); | |
204 | } | |
205 | cur_host = rhost; | |
206 | cp = index(rhost, '@'); | |
207 | if (cp != NULL) { | |
208 | char c = *cp; | |
209 | ||
210 | *cp = '\0'; | |
211 | strncpy(tuser, rhost, sizeof(tuser)-1); | |
212 | *cp = c; | |
213 | rhost = cp + 1; | |
214 | ruser = tuser; | |
215 | if (*ruser == '\0') | |
216 | ruser = user; | |
217 | else if (!okname(ruser)) | |
218 | return(0); | |
219 | } else | |
220 | ruser = user; | |
221 | if (!qflag) | |
222 | printf("updating host %s\n", rhost); | |
223 | (void) sprintf(buf, "%s -Server%s", _PATH_RDIST, qflag ? " -q" : ""); | |
224 | if (port < 0) { | |
225 | struct servent *sp; | |
226 | ||
227 | if ((sp = getservbyname("shell", "tcp")) == NULL) | |
228 | fatal("shell/tcp: unknown service"); | |
229 | port = sp->s_port; | |
230 | } | |
231 | ||
232 | if (debug) { | |
233 | printf("port = %d, luser = %s, ruser = %s\n", ntohs(port), user, ruser); | |
234 | printf("buf = %s\n", buf); | |
235 | } | |
236 | ||
237 | fflush(stdout); | |
238 | setreuid(userid, 0); | |
239 | rem = rcmd(&rhost, port, user, ruser, buf, 0); | |
240 | setreuid(0, userid); | |
241 | if (rem < 0) | |
242 | return(0); | |
243 | cp = buf; | |
244 | if (read(rem, cp, 1) != 1) | |
245 | lostconn(); | |
246 | if (*cp == 'V') { | |
247 | do { | |
248 | if (read(rem, cp, 1) != 1) | |
249 | lostconn(); | |
250 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); | |
251 | *--cp = '\0'; | |
252 | cp = buf; | |
253 | n = 0; | |
254 | while (*cp >= '0' && *cp <= '9') | |
255 | n = (n * 10) + (*cp++ - '0'); | |
256 | if (*cp == '\0' && n == VERSION) | |
257 | return(1); | |
258 | error("connection failed: version numbers don't match (local %d, remote %d)\n", VERSION, n); | |
259 | } else | |
260 | error("connection failed: version numbers don't match\n"); | |
261 | closeconn(); | |
262 | return(0); | |
263 | } | |
264 | ||
265 | /* | |
266 | * Signal end of previous connection. | |
267 | */ | |
268 | closeconn() | |
269 | { | |
270 | if (debug) | |
271 | printf("closeconn()\n"); | |
272 | ||
273 | if (rem >= 0) { | |
274 | (void) write(rem, "\2\n", 2); | |
275 | (void) close(rem); | |
276 | rem = -1; | |
277 | } | |
278 | } | |
279 | ||
280 | void | |
281 | lostconn() | |
282 | { | |
283 | if (iamremote) | |
284 | cleanup(); | |
285 | log(lfp, "rdist: lost connection\n"); | |
286 | longjmp(env, 1); | |
287 | } | |
288 | ||
289 | okname(name) | |
290 | register char *name; | |
291 | { | |
292 | register char *cp = name; | |
293 | register int c; | |
294 | ||
295 | do { | |
296 | c = *cp; | |
297 | if (c & 0200) | |
298 | goto bad; | |
299 | if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-') | |
300 | goto bad; | |
301 | cp++; | |
302 | } while (*cp); | |
303 | return(1); | |
304 | bad: | |
305 | error("invalid user name %s\n", name); | |
306 | return(0); | |
307 | } | |
308 | ||
309 | time_t lastmod; | |
310 | FILE *tfp; | |
311 | extern char target[], *tp; | |
312 | ||
313 | /* | |
314 | * Process commands for comparing files to time stamp files. | |
315 | */ | |
316 | dodcolon(filev, files, stamp, cmds) | |
317 | char **filev; | |
318 | struct namelist *files; | |
319 | char *stamp; | |
320 | struct subcmd *cmds; | |
321 | { | |
322 | register struct subcmd *sc; | |
323 | register struct namelist *f; | |
324 | register char **cpp; | |
325 | struct timeval tv[2]; | |
326 | struct timezone tz; | |
327 | struct stat stb; | |
328 | ||
329 | if (debug) | |
330 | printf("dodcolon()\n"); | |
331 | ||
332 | if (files == NULL) { | |
333 | error("no files to be updated\n"); | |
334 | return; | |
335 | } | |
336 | if (stat(stamp, &stb) < 0) { | |
337 | error("%s: %s\n", stamp, strerror(errno)); | |
338 | return; | |
339 | } | |
340 | if (debug) | |
341 | printf("%s: %d\n", stamp, stb.st_mtime); | |
342 | ||
343 | subcmds = cmds; | |
344 | lastmod = stb.st_mtime; | |
345 | if (nflag || (options & VERIFY)) | |
346 | tfp = NULL; | |
347 | else { | |
348 | if ((tfp = fopen(tempfile, "w")) == NULL) { | |
349 | error("%s: %s\n", stamp, strerror(errno)); | |
350 | return; | |
351 | } | |
352 | (void) gettimeofday(&tv[0], &tz); | |
353 | tv[1] = tv[0]; | |
354 | (void) utimes(stamp, tv); | |
355 | } | |
356 | ||
357 | for (f = files; f != NULL; f = f->n_next) { | |
358 | if (filev) { | |
359 | for (cpp = filev; *cpp; cpp++) | |
360 | if (strcmp(f->n_name, *cpp) == 0) | |
361 | goto found; | |
362 | continue; | |
363 | } | |
364 | found: | |
365 | tp = NULL; | |
366 | cmptime(f->n_name); | |
367 | } | |
368 | ||
369 | if (tfp != NULL) | |
370 | (void) fclose(tfp); | |
371 | for (sc = cmds; sc != NULL; sc = sc->sc_next) | |
372 | if (sc->sc_type == NOTIFY) | |
373 | notify(tempfile, NULL, sc->sc_args, lastmod); | |
374 | if (!nflag && !(options & VERIFY)) | |
375 | (void) unlink(tempfile); | |
376 | } | |
377 | ||
378 | /* | |
379 | * Compare the mtime of file to the list of time stamps. | |
380 | */ | |
381 | cmptime(name) | |
382 | char *name; | |
383 | { | |
384 | struct stat stb; | |
385 | ||
386 | if (debug) | |
387 | printf("cmptime(%s)\n", name); | |
388 | ||
389 | if (except(name)) | |
390 | return; | |
391 | ||
392 | if (nflag) { | |
393 | printf("comparing dates: %s\n", name); | |
394 | return; | |
395 | } | |
396 | ||
397 | /* | |
398 | * first time cmptime() is called? | |
399 | */ | |
400 | if (tp == NULL) { | |
401 | if (exptilde(target, name) == NULL) | |
402 | return; | |
403 | tp = name = target; | |
404 | while (*tp) | |
405 | tp++; | |
406 | } | |
407 | if (access(name, 4) < 0 || stat(name, &stb) < 0) { | |
408 | error("%s: %s\n", name, strerror(errno)); | |
409 | return; | |
410 | } | |
411 | ||
412 | switch (stb.st_mode & S_IFMT) { | |
413 | case S_IFREG: | |
414 | break; | |
415 | ||
416 | case S_IFDIR: | |
417 | rcmptime(&stb); | |
418 | return; | |
419 | ||
420 | default: | |
421 | error("%s: not a plain file\n", name); | |
422 | return; | |
423 | } | |
424 | ||
425 | if (stb.st_mtime > lastmod) | |
426 | log(tfp, "new: %s\n", name); | |
427 | } | |
428 | ||
429 | rcmptime(st) | |
430 | struct stat *st; | |
431 | { | |
432 | register DIR *d; | |
433 | register struct direct *dp; | |
434 | register char *cp; | |
435 | char *otp; | |
436 | int len; | |
437 | ||
438 | if (debug) | |
439 | printf("rcmptime(%x)\n", st); | |
440 | ||
441 | if ((d = opendir(target)) == NULL) { | |
442 | error("%s: %s\n", target, strerror(errno)); | |
443 | return; | |
444 | } | |
445 | otp = tp; | |
446 | len = tp - target; | |
447 | while (dp = readdir(d)) { | |
448 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
449 | continue; | |
450 | if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) { | |
451 | error("%s/%s: Name too long\n", target, dp->d_name); | |
452 | continue; | |
453 | } | |
454 | tp = otp; | |
455 | *tp++ = '/'; | |
456 | cp = dp->d_name; | |
457 | while (*tp++ = *cp++) | |
458 | ; | |
459 | tp--; | |
460 | cmptime(target); | |
461 | } | |
462 | closedir(d); | |
463 | tp = otp; | |
464 | *tp = '\0'; | |
465 | } | |
466 | ||
467 | /* | |
468 | * Notify the list of people the changes that were made. | |
469 | * rhost == NULL if we are mailing a list of changes compared to at time | |
470 | * stamp file. | |
471 | */ | |
472 | notify(file, rhost, to, lmod) | |
473 | char *file, *rhost; | |
474 | register struct namelist *to; | |
475 | time_t lmod; | |
476 | { | |
477 | register int fd, len; | |
478 | FILE *pf, *popen(); | |
479 | struct stat stb; | |
480 | ||
481 | if ((options & VERIFY) || to == NULL) | |
482 | return; | |
483 | if (!qflag) { | |
484 | printf("notify "); | |
485 | if (rhost) | |
486 | printf("@%s ", rhost); | |
487 | prnames(to); | |
488 | } | |
489 | if (nflag) | |
490 | return; | |
491 | ||
492 | if ((fd = open(file, 0)) < 0) { | |
493 | error("%s: %s\n", file, strerror(errno)); | |
494 | return; | |
495 | } | |
496 | if (fstat(fd, &stb) < 0) { | |
497 | error("%s: %s\n", file, strerror(errno)); | |
498 | (void) close(fd); | |
499 | return; | |
500 | } | |
501 | if (stb.st_size == 0) { | |
502 | (void) close(fd); | |
503 | return; | |
504 | } | |
505 | /* | |
506 | * Create a pipe to mailling program. | |
507 | */ | |
508 | (void)sprintf(buf, "%s -oi -t", _PATH_SENDMAIL); | |
509 | pf = popen(buf, "w"); | |
510 | if (pf == NULL) { | |
511 | error("notify: \"%s\" failed\n", _PATH_SENDMAIL); | |
512 | (void) close(fd); | |
513 | return; | |
514 | } | |
515 | /* | |
516 | * Output the proper header information. | |
517 | */ | |
518 | fprintf(pf, "From: rdist (Remote distribution program)\n"); | |
519 | fprintf(pf, "To:"); | |
520 | if (!any('@', to->n_name) && rhost != NULL) | |
521 | fprintf(pf, " %s@%s", to->n_name, rhost); | |
522 | else | |
523 | fprintf(pf, " %s", to->n_name); | |
524 | to = to->n_next; | |
525 | while (to != NULL) { | |
526 | if (!any('@', to->n_name) && rhost != NULL) | |
527 | fprintf(pf, ", %s@%s", to->n_name, rhost); | |
528 | else | |
529 | fprintf(pf, ", %s", to->n_name); | |
530 | to = to->n_next; | |
531 | } | |
532 | putc('\n', pf); | |
533 | if (rhost != NULL) | |
534 | fprintf(pf, "Subject: files updated by rdist from %s to %s\n", | |
535 | host, rhost); | |
536 | else | |
537 | fprintf(pf, "Subject: files updated after %s\n", ctime(&lmod)); | |
538 | putc('\n', pf); | |
539 | ||
540 | while ((len = read(fd, buf, BUFSIZ)) > 0) | |
541 | (void) fwrite(buf, 1, len, pf); | |
542 | (void) close(fd); | |
543 | (void) pclose(pf); | |
544 | } | |
545 | ||
546 | /* | |
547 | * Return true if name is in the list. | |
548 | */ | |
549 | inlist(list, file) | |
550 | struct namelist *list; | |
551 | char *file; | |
552 | { | |
553 | register struct namelist *nl; | |
554 | ||
555 | for (nl = list; nl != NULL; nl = nl->n_next) | |
556 | if (!strcmp(file, nl->n_name)) | |
557 | return(1); | |
558 | return(0); | |
559 | } | |
560 | ||
561 | /* | |
562 | * Return TRUE if file is in the exception list. | |
563 | */ | |
564 | except(file) | |
565 | char *file; | |
566 | { | |
567 | register struct subcmd *sc; | |
568 | register struct namelist *nl; | |
569 | ||
570 | if (debug) | |
571 | printf("except(%s)\n", file); | |
572 | ||
573 | for (sc = subcmds; sc != NULL; sc = sc->sc_next) { | |
574 | if (sc->sc_type != EXCEPT && sc->sc_type != PATTERN) | |
575 | continue; | |
576 | for (nl = sc->sc_args; nl != NULL; nl = nl->n_next) { | |
577 | if (sc->sc_type == EXCEPT) { | |
578 | if (!strcmp(file, nl->n_name)) | |
579 | return(1); | |
580 | continue; | |
581 | } | |
582 | if (regexec(file, regcomp(nl->n_name)) > 0) | |
583 | return(1); | |
584 | } | |
585 | } | |
586 | return(0); | |
587 | } | |
588 | ||
589 | char * | |
590 | colon(cp) | |
591 | register char *cp; | |
592 | { | |
593 | ||
594 | while (*cp) { | |
595 | if (*cp == ':') | |
596 | return(cp); | |
597 | if (*cp == '/') | |
598 | return(0); | |
599 | cp++; | |
600 | } | |
601 | return(0); | |
602 | } |