| 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 are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef lint |
| 19 | static char sccsid[] = "@(#)docmd.c 5.3 (Berkeley) %G%"; |
| 20 | #endif /* not lint */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include <setjmp.h> |
| 24 | #include <netdb.h> |
| 25 | |
| 26 | #ifndef RDIST |
| 27 | #define RDIST "/usr/ucb/rdist" |
| 28 | #endif |
| 29 | |
| 30 | FILE *lfp; /* log file for recording files updated */ |
| 31 | struct subcmd *subcmds; /* list of sub-commands for current cmd */ |
| 32 | jmp_buf env; |
| 33 | |
| 34 | int cleanup(); |
| 35 | int lostconn(); |
| 36 | |
| 37 | /* |
| 38 | * Do the commands in cmds (initialized by yyparse). |
| 39 | */ |
| 40 | docmds(dhosts, argc, argv) |
| 41 | char **dhosts; |
| 42 | int argc; |
| 43 | char **argv; |
| 44 | { |
| 45 | register struct cmd *c; |
| 46 | register struct namelist *f; |
| 47 | register char **cpp; |
| 48 | extern struct cmd *cmds; |
| 49 | |
| 50 | signal(SIGHUP, cleanup); |
| 51 | signal(SIGINT, cleanup); |
| 52 | signal(SIGQUIT, cleanup); |
| 53 | signal(SIGTERM, cleanup); |
| 54 | |
| 55 | for (c = cmds; c != NULL; c = c->c_next) { |
| 56 | if (dhosts != NULL && *dhosts != NULL) { |
| 57 | for (cpp = dhosts; *cpp; cpp++) |
| 58 | if (strcmp(c->c_name, *cpp) == 0) |
| 59 | goto fndhost; |
| 60 | continue; |
| 61 | } |
| 62 | fndhost: |
| 63 | if (argc) { |
| 64 | for (cpp = argv; *cpp; cpp++) { |
| 65 | if (c->c_label != NULL && |
| 66 | strcmp(c->c_label, *cpp) == 0) { |
| 67 | cpp = NULL; |
| 68 | goto found; |
| 69 | } |
| 70 | for (f = c->c_files; f != NULL; f = f->n_next) |
| 71 | if (strcmp(f->n_name, *cpp) == 0) |
| 72 | goto found; |
| 73 | } |
| 74 | continue; |
| 75 | } else |
| 76 | cpp = NULL; |
| 77 | found: |
| 78 | switch (c->c_type) { |
| 79 | case ARROW: |
| 80 | doarrow(cpp, c->c_files, c->c_name, c->c_cmds); |
| 81 | break; |
| 82 | case DCOLON: |
| 83 | dodcolon(cpp, c->c_files, c->c_name, c->c_cmds); |
| 84 | break; |
| 85 | default: |
| 86 | fatal("illegal command type %d\n", c->c_type); |
| 87 | } |
| 88 | } |
| 89 | closeconn(); |
| 90 | } |
| 91 | |
| 92 | /* |
| 93 | * Process commands for sending files to other machines. |
| 94 | */ |
| 95 | doarrow(filev, files, rhost, cmds) |
| 96 | char **filev; |
| 97 | struct namelist *files; |
| 98 | char *rhost; |
| 99 | struct subcmd *cmds; |
| 100 | { |
| 101 | register struct namelist *f; |
| 102 | register struct subcmd *sc; |
| 103 | register char **cpp; |
| 104 | int n, ddir, opts = options; |
| 105 | |
| 106 | if (debug) |
| 107 | printf("doarrow(%x, %s, %x)\n", files, rhost, cmds); |
| 108 | |
| 109 | if (files == NULL) { |
| 110 | error("no files to be updated\n"); |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | subcmds = cmds; |
| 115 | ddir = files->n_next != NULL; /* destination is a directory */ |
| 116 | if (nflag) |
| 117 | printf("updating host %s\n", rhost); |
| 118 | else { |
| 119 | if (setjmp(env)) |
| 120 | goto done; |
| 121 | signal(SIGPIPE, lostconn); |
| 122 | if (!makeconn(rhost)) |
| 123 | return; |
| 124 | if ((lfp = fopen(tmpfile, "w")) == NULL) { |
| 125 | fatal("cannot open %s\n", tmpfile); |
| 126 | exit(1); |
| 127 | } |
| 128 | } |
| 129 | for (f = files; f != NULL; f = f->n_next) { |
| 130 | if (filev) { |
| 131 | for (cpp = filev; *cpp; cpp++) |
| 132 | if (strcmp(f->n_name, *cpp) == 0) |
| 133 | goto found; |
| 134 | if (!nflag) |
| 135 | (void) fclose(lfp); |
| 136 | continue; |
| 137 | } |
| 138 | found: |
| 139 | n = 0; |
| 140 | for (sc = cmds; sc != NULL; sc = sc->sc_next) { |
| 141 | if (sc->sc_type != INSTALL) |
| 142 | continue; |
| 143 | n++; |
| 144 | install(f->n_name, sc->sc_name, |
| 145 | sc->sc_name == NULL ? 0 : ddir, sc->sc_options); |
| 146 | opts = sc->sc_options; |
| 147 | } |
| 148 | if (n == 0) |
| 149 | install(f->n_name, NULL, 0, options); |
| 150 | } |
| 151 | done: |
| 152 | if (!nflag) { |
| 153 | (void) signal(SIGPIPE, cleanup); |
| 154 | (void) fclose(lfp); |
| 155 | lfp = NULL; |
| 156 | } |
| 157 | for (sc = cmds; sc != NULL; sc = sc->sc_next) |
| 158 | if (sc->sc_type == NOTIFY) |
| 159 | notify(tmpfile, rhost, sc->sc_args, 0); |
| 160 | if (!nflag) { |
| 161 | (void) unlink(tmpfile); |
| 162 | for (; ihead != NULL; ihead = ihead->nextp) { |
| 163 | free(ihead); |
| 164 | if ((opts & IGNLNKS) || ihead->count == 0) |
| 165 | continue; |
| 166 | log(lfp, "%s: Warning: missing links\n", |
| 167 | ihead->pathname); |
| 168 | } |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | /* |
| 173 | * Create a connection to the rdist server on the machine rhost. |
| 174 | */ |
| 175 | makeconn(rhost) |
| 176 | char *rhost; |
| 177 | { |
| 178 | register char *ruser, *cp; |
| 179 | static char *cur_host = NULL; |
| 180 | static int port = -1; |
| 181 | char tuser[20]; |
| 182 | int n; |
| 183 | extern char user[]; |
| 184 | extern int userid; |
| 185 | |
| 186 | if (debug) |
| 187 | printf("makeconn(%s)\n", rhost); |
| 188 | |
| 189 | if (cur_host != NULL && rem >= 0) { |
| 190 | if (strcmp(cur_host, rhost) == 0) |
| 191 | return(1); |
| 192 | closeconn(); |
| 193 | } |
| 194 | cur_host = rhost; |
| 195 | cp = index(rhost, '@'); |
| 196 | if (cp != NULL) { |
| 197 | char c = *cp; |
| 198 | |
| 199 | *cp = '\0'; |
| 200 | strncpy(tuser, rhost, sizeof(tuser)-1); |
| 201 | *cp = c; |
| 202 | rhost = cp + 1; |
| 203 | ruser = tuser; |
| 204 | if (*ruser == '\0') |
| 205 | ruser = user; |
| 206 | else if (!okname(ruser)) |
| 207 | return(0); |
| 208 | } else |
| 209 | ruser = user; |
| 210 | if (!qflag) |
| 211 | printf("updating host %s\n", rhost); |
| 212 | (void) sprintf(buf, "%s -Server%s", RDIST, qflag ? " -q" : ""); |
| 213 | if (port < 0) { |
| 214 | struct servent *sp; |
| 215 | |
| 216 | if ((sp = getservbyname("shell", "tcp")) == NULL) |
| 217 | fatal("shell/tcp: unknown service"); |
| 218 | port = sp->s_port; |
| 219 | } |
| 220 | |
| 221 | if (debug) { |
| 222 | printf("port = %d, luser = %s, ruser = %s\n", ntohs(port), user, ruser); |
| 223 | printf("buf = %s\n", buf); |
| 224 | } |
| 225 | |
| 226 | fflush(stdout); |
| 227 | setreuid(userid, 0); |
| 228 | rem = rcmd(&rhost, port, user, ruser, buf, 0); |
| 229 | setreuid(0, userid); |
| 230 | if (rem < 0) |
| 231 | return(0); |
| 232 | cp = buf; |
| 233 | if (read(rem, cp, 1) != 1) |
| 234 | lostconn(); |
| 235 | if (*cp == 'V') { |
| 236 | do { |
| 237 | if (read(rem, cp, 1) != 1) |
| 238 | lostconn(); |
| 239 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); |
| 240 | *--cp = '\0'; |
| 241 | cp = buf; |
| 242 | n = 0; |
| 243 | while (*cp >= '0' && *cp <= '9') |
| 244 | n = (n * 10) + (*cp++ - '0'); |
| 245 | if (*cp == '\0' && n == VERSION) |
| 246 | return(1); |
| 247 | error("connection failed: version numbers don't match (local %d, remote %d)\n", VERSION, n); |
| 248 | } else |
| 249 | error("connection failed: version numbers don't match\n"); |
| 250 | closeconn(); |
| 251 | return(0); |
| 252 | } |
| 253 | |
| 254 | /* |
| 255 | * Signal end of previous connection. |
| 256 | */ |
| 257 | closeconn() |
| 258 | { |
| 259 | if (debug) |
| 260 | printf("closeconn()\n"); |
| 261 | |
| 262 | if (rem >= 0) { |
| 263 | (void) write(rem, "\2\n", 2); |
| 264 | (void) close(rem); |
| 265 | rem = -1; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | lostconn() |
| 270 | { |
| 271 | if (iamremote) |
| 272 | cleanup(); |
| 273 | log(lfp, "rdist: lost connection\n"); |
| 274 | longjmp(env, 1); |
| 275 | } |
| 276 | |
| 277 | okname(name) |
| 278 | register char *name; |
| 279 | { |
| 280 | register char *cp = name; |
| 281 | register int c; |
| 282 | |
| 283 | do { |
| 284 | c = *cp; |
| 285 | if (c & 0200) |
| 286 | goto bad; |
| 287 | if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-') |
| 288 | goto bad; |
| 289 | cp++; |
| 290 | } while (*cp); |
| 291 | return(1); |
| 292 | bad: |
| 293 | error("invalid user name %s\n", name); |
| 294 | return(0); |
| 295 | } |
| 296 | |
| 297 | time_t lastmod; |
| 298 | FILE *tfp; |
| 299 | extern char target[], *tp; |
| 300 | |
| 301 | /* |
| 302 | * Process commands for comparing files to time stamp files. |
| 303 | */ |
| 304 | dodcolon(filev, files, stamp, cmds) |
| 305 | char **filev; |
| 306 | struct namelist *files; |
| 307 | char *stamp; |
| 308 | struct subcmd *cmds; |
| 309 | { |
| 310 | register struct subcmd *sc; |
| 311 | register struct namelist *f; |
| 312 | register char **cpp; |
| 313 | struct timeval tv[2]; |
| 314 | struct timezone tz; |
| 315 | struct stat stb; |
| 316 | |
| 317 | if (debug) |
| 318 | printf("dodcolon()\n"); |
| 319 | |
| 320 | if (files == NULL) { |
| 321 | error("no files to be updated\n"); |
| 322 | return; |
| 323 | } |
| 324 | if (stat(stamp, &stb) < 0) { |
| 325 | error("%s: %s\n", stamp, sys_errlist[errno]); |
| 326 | return; |
| 327 | } |
| 328 | if (debug) |
| 329 | printf("%s: %d\n", stamp, stb.st_mtime); |
| 330 | |
| 331 | subcmds = cmds; |
| 332 | lastmod = stb.st_mtime; |
| 333 | if (nflag || (options & VERIFY)) |
| 334 | tfp = NULL; |
| 335 | else { |
| 336 | if ((tfp = fopen(tmpfile, "w")) == NULL) { |
| 337 | error("%s: %s\n", stamp, sys_errlist[errno]); |
| 338 | return; |
| 339 | } |
| 340 | (void) gettimeofday(&tv[0], &tz); |
| 341 | tv[1] = tv[0]; |
| 342 | (void) utimes(stamp, tv); |
| 343 | } |
| 344 | |
| 345 | for (f = files; f != NULL; f = f->n_next) { |
| 346 | if (filev) { |
| 347 | for (cpp = filev; *cpp; cpp++) |
| 348 | if (strcmp(f->n_name, *cpp) == 0) |
| 349 | goto found; |
| 350 | continue; |
| 351 | } |
| 352 | found: |
| 353 | tp = NULL; |
| 354 | cmptime(f->n_name); |
| 355 | } |
| 356 | |
| 357 | if (tfp != NULL) |
| 358 | (void) fclose(tfp); |
| 359 | for (sc = cmds; sc != NULL; sc = sc->sc_next) |
| 360 | if (sc->sc_type == NOTIFY) |
| 361 | notify(tmpfile, NULL, sc->sc_args, lastmod); |
| 362 | if (!nflag && !(options & VERIFY)) |
| 363 | (void) unlink(tmpfile); |
| 364 | } |
| 365 | |
| 366 | /* |
| 367 | * Compare the mtime of file to the list of time stamps. |
| 368 | */ |
| 369 | cmptime(name) |
| 370 | char *name; |
| 371 | { |
| 372 | struct stat stb; |
| 373 | |
| 374 | if (debug) |
| 375 | printf("cmptime(%s)\n", name); |
| 376 | |
| 377 | if (except(name)) |
| 378 | return; |
| 379 | |
| 380 | if (nflag) { |
| 381 | printf("comparing dates: %s\n", name); |
| 382 | return; |
| 383 | } |
| 384 | |
| 385 | /* |
| 386 | * first time cmptime() is called? |
| 387 | */ |
| 388 | if (tp == NULL) { |
| 389 | if (exptilde(target, name) == NULL) |
| 390 | return; |
| 391 | tp = name = target; |
| 392 | while (*tp) |
| 393 | tp++; |
| 394 | } |
| 395 | if (access(name, 4) < 0 || stat(name, &stb) < 0) { |
| 396 | error("%s: %s\n", name, sys_errlist[errno]); |
| 397 | return; |
| 398 | } |
| 399 | |
| 400 | switch (stb.st_mode & S_IFMT) { |
| 401 | case S_IFREG: |
| 402 | break; |
| 403 | |
| 404 | case S_IFDIR: |
| 405 | rcmptime(&stb); |
| 406 | return; |
| 407 | |
| 408 | default: |
| 409 | error("%s: not a plain file\n", name); |
| 410 | return; |
| 411 | } |
| 412 | |
| 413 | if (stb.st_mtime > lastmod) |
| 414 | log(tfp, "new: %s\n", name); |
| 415 | } |
| 416 | |
| 417 | rcmptime(st) |
| 418 | struct stat *st; |
| 419 | { |
| 420 | register DIR *d; |
| 421 | register struct direct *dp; |
| 422 | register char *cp; |
| 423 | char *otp; |
| 424 | int len; |
| 425 | |
| 426 | if (debug) |
| 427 | printf("rcmptime(%x)\n", st); |
| 428 | |
| 429 | if ((d = opendir(target)) == NULL) { |
| 430 | error("%s: %s\n", target, sys_errlist[errno]); |
| 431 | return; |
| 432 | } |
| 433 | otp = tp; |
| 434 | len = tp - target; |
| 435 | while (dp = readdir(d)) { |
| 436 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) |
| 437 | continue; |
| 438 | if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) { |
| 439 | error("%s/%s: Name too long\n", target, dp->d_name); |
| 440 | continue; |
| 441 | } |
| 442 | tp = otp; |
| 443 | *tp++ = '/'; |
| 444 | cp = dp->d_name; |
| 445 | while (*tp++ = *cp++) |
| 446 | ; |
| 447 | tp--; |
| 448 | cmptime(target); |
| 449 | } |
| 450 | closedir(d); |
| 451 | tp = otp; |
| 452 | *tp = '\0'; |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * Notify the list of people the changes that were made. |
| 457 | * rhost == NULL if we are mailing a list of changes compared to at time |
| 458 | * stamp file. |
| 459 | */ |
| 460 | notify(file, rhost, to, lmod) |
| 461 | char *file, *rhost; |
| 462 | register struct namelist *to; |
| 463 | time_t lmod; |
| 464 | { |
| 465 | register int fd, len; |
| 466 | FILE *pf, *popen(); |
| 467 | struct stat stb; |
| 468 | |
| 469 | if ((options & VERIFY) || to == NULL) |
| 470 | return; |
| 471 | if (!qflag) { |
| 472 | printf("notify "); |
| 473 | if (rhost) |
| 474 | printf("@%s ", rhost); |
| 475 | prnames(to); |
| 476 | } |
| 477 | if (nflag) |
| 478 | return; |
| 479 | |
| 480 | if ((fd = open(file, 0)) < 0) { |
| 481 | error("%s: %s\n", file, sys_errlist[errno]); |
| 482 | return; |
| 483 | } |
| 484 | if (fstat(fd, &stb) < 0) { |
| 485 | error("%s: %s\n", file, sys_errlist[errno]); |
| 486 | (void) close(fd); |
| 487 | return; |
| 488 | } |
| 489 | if (stb.st_size == 0) { |
| 490 | (void) close(fd); |
| 491 | return; |
| 492 | } |
| 493 | /* |
| 494 | * Create a pipe to mailling program. |
| 495 | */ |
| 496 | pf = popen(MAILCMD, "w"); |
| 497 | if (pf == NULL) { |
| 498 | error("notify: \"%s\" failed\n", MAILCMD); |
| 499 | (void) close(fd); |
| 500 | return; |
| 501 | } |
| 502 | /* |
| 503 | * Output the proper header information. |
| 504 | */ |
| 505 | fprintf(pf, "From: rdist (Remote distribution program)\n"); |
| 506 | fprintf(pf, "To:"); |
| 507 | if (!any('@', to->n_name) && rhost != NULL) |
| 508 | fprintf(pf, " %s@%s", to->n_name, rhost); |
| 509 | else |
| 510 | fprintf(pf, " %s", to->n_name); |
| 511 | to = to->n_next; |
| 512 | while (to != NULL) { |
| 513 | if (!any('@', to->n_name) && rhost != NULL) |
| 514 | fprintf(pf, ", %s@%s", to->n_name, rhost); |
| 515 | else |
| 516 | fprintf(pf, ", %s", to->n_name); |
| 517 | to = to->n_next; |
| 518 | } |
| 519 | putc('\n', pf); |
| 520 | if (rhost != NULL) |
| 521 | fprintf(pf, "Subject: files updated by rdist from %s to %s\n", |
| 522 | host, rhost); |
| 523 | else |
| 524 | fprintf(pf, "Subject: files updated after %s\n", ctime(&lmod)); |
| 525 | putc('\n', pf); |
| 526 | |
| 527 | while ((len = read(fd, buf, BUFSIZ)) > 0) |
| 528 | (void) fwrite(buf, 1, len, pf); |
| 529 | (void) close(fd); |
| 530 | (void) pclose(pf); |
| 531 | } |
| 532 | |
| 533 | /* |
| 534 | * Return true if name is in the list. |
| 535 | */ |
| 536 | inlist(list, file) |
| 537 | struct namelist *list; |
| 538 | char *file; |
| 539 | { |
| 540 | register struct namelist *nl; |
| 541 | |
| 542 | for (nl = list; nl != NULL; nl = nl->n_next) |
| 543 | if (!strcmp(file, nl->n_name)) |
| 544 | return(1); |
| 545 | return(0); |
| 546 | } |
| 547 | |
| 548 | /* |
| 549 | * Return TRUE if file is in the exception list. |
| 550 | */ |
| 551 | except(file) |
| 552 | char *file; |
| 553 | { |
| 554 | register struct subcmd *sc; |
| 555 | register struct namelist *nl; |
| 556 | |
| 557 | if (debug) |
| 558 | printf("except(%s)\n", file); |
| 559 | |
| 560 | for (sc = subcmds; sc != NULL; sc = sc->sc_next) { |
| 561 | if (sc->sc_type != EXCEPT && sc->sc_type != PATTERN) |
| 562 | continue; |
| 563 | for (nl = sc->sc_args; nl != NULL; nl = nl->n_next) { |
| 564 | if (sc->sc_type == EXCEPT) { |
| 565 | if (!strcmp(file, nl->n_name)) |
| 566 | return(1); |
| 567 | continue; |
| 568 | } |
| 569 | re_comp(nl->n_name); |
| 570 | if (re_exec(file) > 0) |
| 571 | return(1); |
| 572 | } |
| 573 | } |
| 574 | return(0); |
| 575 | } |
| 576 | |
| 577 | char * |
| 578 | colon(cp) |
| 579 | register char *cp; |
| 580 | { |
| 581 | |
| 582 | while (*cp) { |
| 583 | if (*cp == ':') |
| 584 | return(cp); |
| 585 | if (*cp == '/') |
| 586 | return(0); |
| 587 | cp++; |
| 588 | } |
| 589 | return(0); |
| 590 | } |