| 1 | #ifndef lint |
| 2 | static char *sccsid = "@(#)server.c 4.2 (Berkeley) 83/09/27"; |
| 3 | #endif |
| 4 | |
| 5 | #include "defs.h" |
| 6 | |
| 7 | #define ga() (void) write(rem, "", 1) |
| 8 | |
| 9 | char buf[BUFSIZ]; /* general purpose buffer */ |
| 10 | char target[BUFSIZ]; /* target/source directory name */ |
| 11 | char *tp; /* pointer to end of target name */ |
| 12 | int catname; /* cat name to target name */ |
| 13 | |
| 14 | static struct passwd *p = NULL; |
| 15 | static struct group *g = NULL; |
| 16 | |
| 17 | extern FILE *lfp; /* log file for mailing changes */ |
| 18 | |
| 19 | /* |
| 20 | * Server routine to read requests and process them. |
| 21 | * Commands are: |
| 22 | * Tname - Transmit file if out of date |
| 23 | * Vname - Verify if file out of date or not |
| 24 | * Qname - Query if file exists. Return mtime & size if it does. |
| 25 | */ |
| 26 | server() |
| 27 | { |
| 28 | char cmdbuf[BUFSIZ]; |
| 29 | register char *cp; |
| 30 | register struct block *bp, *last = NULL; |
| 31 | register int n; |
| 32 | static struct block cmdblk = { EXCEPT }; |
| 33 | |
| 34 | (void) umask(0); |
| 35 | ga(); |
| 36 | |
| 37 | for (;;) { |
| 38 | cp = cmdbuf; |
| 39 | if (read(rem, cp, 1) <= 0) |
| 40 | return; |
| 41 | if (*cp++ == '\n') { |
| 42 | error("expected control record\n"); |
| 43 | continue; |
| 44 | } |
| 45 | do { |
| 46 | if (read(rem, cp, 1) != 1) |
| 47 | lostconn(); |
| 48 | } while (*cp++ != '\n' && cp < &cmdbuf[BUFSIZ]); |
| 49 | *--cp = '\0'; |
| 50 | cp = cmdbuf; |
| 51 | switch (*cp++) { |
| 52 | case 'X': /* add name to list of files to exclude */ |
| 53 | if (*cp == '\0') |
| 54 | continue; |
| 55 | bp = ALLOC(block); |
| 56 | if (bp == NULL) |
| 57 | fatal("ran out of memory\n"); |
| 58 | bp->b_type = NAME; |
| 59 | bp->b_next = bp->b_args = NULL; |
| 60 | bp->b_name = cp = (char *) malloc(strlen(cp) + 1); |
| 61 | if (cp == NULL) |
| 62 | fatal("ran out of memory\n"); |
| 63 | strcpy(cp, &cmdbuf[1]); |
| 64 | if (last == NULL) { |
| 65 | except = &cmdblk; |
| 66 | cmdblk.b_args = last = bp; |
| 67 | } else { |
| 68 | last->b_next = bp; |
| 69 | last = bp; |
| 70 | } |
| 71 | continue; |
| 72 | |
| 73 | case 'T': /* init target file/directory name */ |
| 74 | catname = 1; /* target should be directory */ |
| 75 | goto dotarget; |
| 76 | |
| 77 | case 't': /* init target file/directory name */ |
| 78 | catname = 0; |
| 79 | dotarget: |
| 80 | exptilde(target, cp); |
| 81 | tp = target; |
| 82 | while (*tp) |
| 83 | tp++; |
| 84 | continue; |
| 85 | |
| 86 | case 'S': /* Send. Transfer file if out of date. */ |
| 87 | tp = NULL; |
| 88 | sendf(cp, 0); |
| 89 | continue; |
| 90 | |
| 91 | case 'V': /* Verify. See if file is out of date. */ |
| 92 | tp = NULL; |
| 93 | sendf(cp, 1); |
| 94 | continue; |
| 95 | |
| 96 | case 'R': /* Receive. Transfer file. */ |
| 97 | recvf(cp, 0); |
| 98 | continue; |
| 99 | |
| 100 | case 'D': /* Directory. Transfer file. */ |
| 101 | recvf(cp, 1); |
| 102 | continue; |
| 103 | |
| 104 | case 'E': /* End. (of directory) */ |
| 105 | *tp = '\0'; |
| 106 | if (--catname < 0) { |
| 107 | error("too many 'E's\n"); |
| 108 | continue; |
| 109 | } |
| 110 | cp = rindex(target, '/'); |
| 111 | if (cp == NULL) |
| 112 | tp = NULL; |
| 113 | else { |
| 114 | *cp = '\0'; |
| 115 | tp = cp; |
| 116 | } |
| 117 | ga(); |
| 118 | continue; |
| 119 | |
| 120 | case 'Q': /* Query. Does file exist? */ |
| 121 | query(cp); |
| 122 | continue; |
| 123 | |
| 124 | case 'L': /* Log. save message in log file */ |
| 125 | query(cp); |
| 126 | continue; |
| 127 | |
| 128 | case '\1': |
| 129 | errs++; |
| 130 | continue; |
| 131 | |
| 132 | case '\2': |
| 133 | return; |
| 134 | |
| 135 | default: |
| 136 | error("unknown command type %s\n", cp); |
| 137 | case '\0': |
| 138 | continue; |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /* |
| 144 | * Transfer the file or directory 'name'. |
| 145 | */ |
| 146 | sendf(name, verify) |
| 147 | char *name; |
| 148 | int verify; |
| 149 | { |
| 150 | register char *last; |
| 151 | struct stat stb; |
| 152 | int sizerr, f, u; |
| 153 | off_t i; |
| 154 | |
| 155 | if (debug) |
| 156 | printf("sendf(%s, %d)\n", name, verify); |
| 157 | |
| 158 | if (exclude(name)) |
| 159 | return; |
| 160 | |
| 161 | /* |
| 162 | * first time sendf() is called? |
| 163 | */ |
| 164 | if (tp == NULL) { |
| 165 | exptilde(target, name); |
| 166 | tp = name = target; |
| 167 | while (*tp) |
| 168 | tp++; |
| 169 | } |
| 170 | if (access(name, 4) < 0 || stat(name, &stb) < 0) { |
| 171 | error("%s: %s\n", name, sys_errlist[errno]); |
| 172 | return; |
| 173 | } |
| 174 | last = rindex(name, '/'); |
| 175 | if (last == NULL) |
| 176 | last = name; |
| 177 | else |
| 178 | last++; |
| 179 | if ((u = update(last, &stb)) == 0) |
| 180 | return; |
| 181 | |
| 182 | if (p == NULL || p->pw_uid != stb.st_uid) |
| 183 | if ((p = getpwuid(stb.st_uid)) == NULL) { |
| 184 | error("no password entry for uid %d\n", stb.st_uid); |
| 185 | return; |
| 186 | } |
| 187 | if (g == NULL || g->gr_gid != stb.st_gid) |
| 188 | if ((g = getgrgid(stb.st_gid)) == NULL) { |
| 189 | error("no name for group %d\n", stb.st_gid); |
| 190 | return; |
| 191 | } |
| 192 | |
| 193 | switch (stb.st_mode & S_IFMT) { |
| 194 | case S_IFREG: |
| 195 | break; |
| 196 | |
| 197 | case S_IFDIR: |
| 198 | rsendf(name, verify, &stb, p->pw_name, g->gr_name); |
| 199 | return; |
| 200 | |
| 201 | default: |
| 202 | error("%s: not a plain file\n", name); |
| 203 | return; |
| 204 | } |
| 205 | |
| 206 | log(lfp, "%s: %s\n", u == 2 ? "updating" : "installing", name); |
| 207 | |
| 208 | if (verify || vflag) |
| 209 | return; |
| 210 | |
| 211 | if ((f = open(name, 0)) < 0) { |
| 212 | error("%s: %s\n", name, sys_errlist[errno]); |
| 213 | return; |
| 214 | } |
| 215 | (void) sprintf(buf, "R%04o %D %D %s %s %s\n", stb.st_mode & 07777, |
| 216 | stb.st_size, stb.st_mtime, p->pw_name, g->gr_name, last); |
| 217 | if (debug) |
| 218 | printf("buf = %s", buf); |
| 219 | (void) write(rem, buf, strlen(buf)); |
| 220 | if (response() < 0) { |
| 221 | (void) close(f); |
| 222 | return; |
| 223 | } |
| 224 | sizerr = 0; |
| 225 | for (i = 0; i < stb.st_size; i += BUFSIZ) { |
| 226 | int amt = BUFSIZ; |
| 227 | if (i + amt > stb.st_size) |
| 228 | amt = stb.st_size - i; |
| 229 | if (sizerr == 0 && read(f, buf, amt) != amt) |
| 230 | sizerr = 1; |
| 231 | (void) write(rem, buf, amt); |
| 232 | } |
| 233 | (void) close(f); |
| 234 | if (sizerr) |
| 235 | error("%s: file changed size\n", name); |
| 236 | else |
| 237 | ga(); |
| 238 | (void) response(); |
| 239 | } |
| 240 | |
| 241 | rsendf(name, verify, st, owner, group) |
| 242 | char *name; |
| 243 | int verify; |
| 244 | struct stat *st; |
| 245 | char *owner, *group; |
| 246 | { |
| 247 | DIR *d; |
| 248 | struct direct *dp; |
| 249 | register char *last; |
| 250 | char *otp; |
| 251 | int len; |
| 252 | |
| 253 | if (debug) |
| 254 | printf("rsendf(%s, %d, %x, %s, %s)\n", name, verify, st, |
| 255 | owner, group); |
| 256 | |
| 257 | if ((d = opendir(name)) == NULL) { |
| 258 | error("%s: %s\n", name, sys_errlist[errno]); |
| 259 | return; |
| 260 | } |
| 261 | last = rindex(name, '/'); |
| 262 | if (last == NULL) |
| 263 | last = name; |
| 264 | else |
| 265 | last++; |
| 266 | (void) sprintf(buf, "D%04o 0 0 %s %s %s\n", st->st_mode & 07777, |
| 267 | owner, group, last); |
| 268 | if (debug) |
| 269 | printf("buf = %s", buf); |
| 270 | (void) write(rem, buf, strlen(buf)); |
| 271 | if (response() < 0) { |
| 272 | closedir(d); |
| 273 | return; |
| 274 | } |
| 275 | otp = tp; |
| 276 | len = tp - target; |
| 277 | while (dp = readdir(d)) { |
| 278 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) |
| 279 | continue; |
| 280 | if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) { |
| 281 | error("%s/%s: Name too long\n", name, dp->d_name); |
| 282 | continue; |
| 283 | } |
| 284 | tp = otp; |
| 285 | *tp++ = '/'; |
| 286 | last = dp->d_name; |
| 287 | while (*tp++ = *last++) |
| 288 | ; |
| 289 | tp--; |
| 290 | sendf(target, verify); |
| 291 | } |
| 292 | closedir(d); |
| 293 | (void) write(rem, "E\n", 2); |
| 294 | (void) response(); |
| 295 | tp = otp; |
| 296 | *tp = '\0'; |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * Check to see if file needs to be updated on the remote machine. |
| 301 | * Returns 0 if no update, 1 if remote doesn't exist, and 2 if out of date. |
| 302 | */ |
| 303 | update(name, st) |
| 304 | char *name; |
| 305 | struct stat *st; |
| 306 | { |
| 307 | register char *cp; |
| 308 | register off_t size; |
| 309 | register time_t mtime; |
| 310 | |
| 311 | if (debug) |
| 312 | printf("update(%s, %x)\n", name, st); |
| 313 | |
| 314 | /* |
| 315 | * Check to see if the file exists on the remote machine. |
| 316 | */ |
| 317 | (void) sprintf(buf, "Q%s\n", name); |
| 318 | if (debug) |
| 319 | printf("buf = %s", buf); |
| 320 | (void) write(rem, buf, strlen(buf)); |
| 321 | cp = buf; |
| 322 | do { |
| 323 | if (read(rem, cp, 1) != 1) |
| 324 | lostconn(); |
| 325 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); |
| 326 | *--cp = '\0'; |
| 327 | cp = buf; |
| 328 | if (debug) |
| 329 | printf("resp = %s\n", cp); |
| 330 | |
| 331 | switch (*cp++) { |
| 332 | case 'Y': |
| 333 | break; |
| 334 | |
| 335 | case 'N': /* file doesn't exist so install it */ |
| 336 | return(1); |
| 337 | |
| 338 | case '\1': |
| 339 | errs++; |
| 340 | if (*cp != '\0') { |
| 341 | if (!iamremote) { |
| 342 | fflush(stdout); |
| 343 | (void) write(2, cp, strlen(cp)); |
| 344 | } |
| 345 | if (lfp != NULL) |
| 346 | (void) fwrite(cp, 1, strlen(cp), lfp); |
| 347 | } |
| 348 | return(0); |
| 349 | |
| 350 | default: |
| 351 | error("unexpected response '%c' to query\n", *--cp); |
| 352 | return(0); |
| 353 | } |
| 354 | |
| 355 | if (*cp == '\0') { |
| 356 | if ((st->st_mode & S_IFMT) == S_IFDIR) |
| 357 | return(2); |
| 358 | return(1); |
| 359 | } |
| 360 | |
| 361 | size = 0; |
| 362 | while (isdigit(*cp)) |
| 363 | size = size * 10 + (*cp++ - '0'); |
| 364 | if (*cp++ != ' ') { |
| 365 | error("size not delimited\n"); |
| 366 | return(0); |
| 367 | } |
| 368 | mtime = 0; |
| 369 | while (isdigit(*cp)) |
| 370 | mtime = mtime * 10 + (*cp++ - '0'); |
| 371 | if (*cp != '\0') { |
| 372 | error("mtime not delimited\n"); |
| 373 | return(0); |
| 374 | } |
| 375 | /* |
| 376 | * File needs to be updated? |
| 377 | */ |
| 378 | if (st->st_mtime == mtime && st->st_size == size || |
| 379 | yflag && st->st_mtime < mtime) |
| 380 | return(0); |
| 381 | return(2); |
| 382 | } |
| 383 | |
| 384 | /* |
| 385 | * Query. Check to see if file exists. Return one of the following: |
| 386 | * N\n - doesn't exist |
| 387 | * Ysize mtime\n - exists and its a regular file (size & mtime of file) |
| 388 | * Y\n - exists and its a directory |
| 389 | * ^Aerror message\n |
| 390 | */ |
| 391 | query(name) |
| 392 | char *name; |
| 393 | { |
| 394 | struct stat stb; |
| 395 | |
| 396 | if (catname) |
| 397 | (void) sprintf(tp, "/%s", name); |
| 398 | if (stat(target, &stb) < 0) { |
| 399 | (void) write(rem, "N\n", 2); |
| 400 | *tp = '\0'; |
| 401 | return; |
| 402 | } |
| 403 | |
| 404 | switch (stb.st_mode & S_IFMT) { |
| 405 | case S_IFREG: |
| 406 | (void) sprintf(buf, "Y%D %D\n", stb.st_size, stb.st_mtime); |
| 407 | (void) write(rem, buf, strlen(buf)); |
| 408 | break; |
| 409 | |
| 410 | case S_IFDIR: |
| 411 | (void) write(rem, "Y\n", 2); |
| 412 | break; |
| 413 | |
| 414 | default: |
| 415 | error("%s: not a plain file\n", name); |
| 416 | break; |
| 417 | } |
| 418 | *tp = '\0'; |
| 419 | } |
| 420 | |
| 421 | recvf(cmd, isdir) |
| 422 | char *cmd; |
| 423 | int isdir; |
| 424 | { |
| 425 | register char *cp; |
| 426 | int f, mode, wrerr, exists, olderrno; |
| 427 | off_t i, size; |
| 428 | time_t mtime; |
| 429 | struct stat stb; |
| 430 | struct timeval tvp[2]; |
| 431 | char *owner, *group, *dir; |
| 432 | char new[BUFSIZ]; |
| 433 | extern char *tmpname; |
| 434 | |
| 435 | mode = 0; |
| 436 | for (cp = cmd; cp < cmd+4; cp++) { |
| 437 | if (*cp < '0' || *cp > '7') { |
| 438 | error("bad mode\n"); |
| 439 | return; |
| 440 | } |
| 441 | mode = (mode << 3) | (*cp - '0'); |
| 442 | } |
| 443 | if (*cp++ != ' ') { |
| 444 | error("mode not delimited\n"); |
| 445 | return; |
| 446 | } |
| 447 | size = 0; |
| 448 | while (isdigit(*cp)) |
| 449 | size = size * 10 + (*cp++ - '0'); |
| 450 | if (*cp++ != ' ') { |
| 451 | error("size not delimited\n"); |
| 452 | return; |
| 453 | } |
| 454 | mtime = 0; |
| 455 | while (isdigit(*cp)) |
| 456 | mtime = mtime * 10 + (*cp++ - '0'); |
| 457 | if (*cp++ != ' ') { |
| 458 | error("mtime not delimited\n"); |
| 459 | return; |
| 460 | } |
| 461 | owner = cp; |
| 462 | while (*cp && *cp != ' ') |
| 463 | cp++; |
| 464 | if (*cp != ' ') { |
| 465 | error("owner name not delimited\n"); |
| 466 | return; |
| 467 | } |
| 468 | *cp++ = '\0'; |
| 469 | group = cp; |
| 470 | while (*cp && *cp != ' ') |
| 471 | cp++; |
| 472 | if (*cp != ' ') { |
| 473 | error("group name not delimited\n"); |
| 474 | return; |
| 475 | } |
| 476 | *cp++ = '\0'; |
| 477 | |
| 478 | new[0] = '\0'; |
| 479 | if (isdir) { |
| 480 | if (catname++) { |
| 481 | *tp++ = '/'; |
| 482 | while (*tp++ = *cp++) |
| 483 | ; |
| 484 | tp--; |
| 485 | } |
| 486 | if (vflag) { |
| 487 | ga(); |
| 488 | return; |
| 489 | } |
| 490 | if (stat(target, &stb) == 0) { |
| 491 | if ((stb.st_mode & S_IFMT) != S_IFDIR) { |
| 492 | errno = ENOTDIR; |
| 493 | goto bad; |
| 494 | } |
| 495 | } else { |
| 496 | /* |
| 497 | * Check parent directory for write permission. |
| 498 | */ |
| 499 | cp = rindex(target, '/'); |
| 500 | if (cp == NULL) |
| 501 | dir = "."; |
| 502 | else if (cp == target) { |
| 503 | dir = "/"; |
| 504 | cp = NULL; |
| 505 | } else { |
| 506 | dir = target; |
| 507 | *cp = '\0'; |
| 508 | } |
| 509 | if (access(dir, 2) < 0) |
| 510 | goto bad2; |
| 511 | if (cp != NULL) |
| 512 | *cp = '/'; |
| 513 | if (mkdir(target, mode) < 0) |
| 514 | goto bad; |
| 515 | if (chog(target, owner, group, mode) < 0) |
| 516 | return; |
| 517 | } |
| 518 | ga(); |
| 519 | return; |
| 520 | } |
| 521 | |
| 522 | if (catname) |
| 523 | (void) sprintf(tp, "/%s", cp); |
| 524 | if (stat(target, &stb) == 0) { |
| 525 | switch (stb.st_mode & S_IFMT) { |
| 526 | case S_IFREG: |
| 527 | break; |
| 528 | |
| 529 | case S_IFDIR: |
| 530 | if (!catname) { |
| 531 | (void) sprintf(tp, "/%s", cp); |
| 532 | break; |
| 533 | } |
| 534 | |
| 535 | default: |
| 536 | error("%s: not a regular file\n", target); |
| 537 | return; |
| 538 | } |
| 539 | } |
| 540 | /* |
| 541 | * Check parent directory for write permission. |
| 542 | */ |
| 543 | cp = rindex(target, '/'); |
| 544 | if (cp == NULL) |
| 545 | dir = "."; |
| 546 | else if (cp == target) { |
| 547 | dir = "/"; |
| 548 | cp = NULL; |
| 549 | } else { |
| 550 | dir = target; |
| 551 | *cp = '\0'; |
| 552 | } |
| 553 | if (access(dir, 2) < 0) { |
| 554 | bad2: |
| 555 | error("%s: %s\n", dir, sys_errlist[errno]); |
| 556 | if (cp != NULL) |
| 557 | *cp = '/'; |
| 558 | return; |
| 559 | } |
| 560 | (void) sprintf(new, "%s/%s", dir, tmpname); |
| 561 | if (cp != NULL) |
| 562 | *cp = '/'; |
| 563 | if ((f = creat(new, mode)) < 0) |
| 564 | goto bad1; |
| 565 | if (chog(new, owner, group, mode) < 0) { |
| 566 | (void) close(f); |
| 567 | (void) unlink(new); |
| 568 | return; |
| 569 | } |
| 570 | ga(); |
| 571 | |
| 572 | wrerr = 0; |
| 573 | for (i = 0; i < size; i += BUFSIZ) { |
| 574 | int amt = BUFSIZ; |
| 575 | char *cp = buf; |
| 576 | |
| 577 | if (i + amt > size) |
| 578 | amt = size - i; |
| 579 | do { |
| 580 | int j = read(rem, cp, amt); |
| 581 | |
| 582 | if (j <= 0) { |
| 583 | (void) close(f); |
| 584 | (void) unlink(new); |
| 585 | cleanup(); |
| 586 | } |
| 587 | amt -= j; |
| 588 | cp += j; |
| 589 | } while (amt > 0); |
| 590 | amt = BUFSIZ; |
| 591 | if (i + amt > size) |
| 592 | amt = size - i; |
| 593 | if (wrerr == 0 && write(f, buf, amt) != amt) { |
| 594 | olderrno = errno; |
| 595 | wrerr++; |
| 596 | } |
| 597 | } |
| 598 | (void) response(); |
| 599 | if (wrerr) { |
| 600 | error("%s: %s\n", cp, sys_errlist[olderrno]); |
| 601 | (void) close(f); |
| 602 | (void) unlink(new); |
| 603 | return; |
| 604 | } |
| 605 | |
| 606 | /* |
| 607 | * Set last modified time |
| 608 | */ |
| 609 | (void) fstat(f, &stb); |
| 610 | (void) close(f); |
| 611 | tvp[0].tv_sec = stb.st_atime; |
| 612 | tvp[0].tv_usec = 0; |
| 613 | tvp[1].tv_sec = mtime; |
| 614 | tvp[1].tv_usec = 0; |
| 615 | if (utimes(new, tvp) < 0) { |
| 616 | bad1: |
| 617 | error("%s: %s\n", new, sys_errlist[errno]); |
| 618 | if (new[0]) |
| 619 | (void) unlink(new); |
| 620 | return; |
| 621 | } |
| 622 | |
| 623 | if (rename(new, target) < 0) { |
| 624 | bad: |
| 625 | error("%s: %s\n", target, sys_errlist[errno]); |
| 626 | if (new[0]) |
| 627 | (void) unlink(new); |
| 628 | return; |
| 629 | } |
| 630 | ga(); |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * Change owner and group of file. |
| 635 | */ |
| 636 | chog(file, owner, group, mode) |
| 637 | char *file, *owner, *group; |
| 638 | int mode; |
| 639 | { |
| 640 | extern int userid, groupid; |
| 641 | extern char user[]; |
| 642 | register int i; |
| 643 | int uid, gid; |
| 644 | |
| 645 | uid = userid; |
| 646 | if (userid == 0) { |
| 647 | if (p == NULL || strcmp(owner, p->pw_name) != 0) { |
| 648 | if ((p = getpwnam(owner)) == NULL) { |
| 649 | if (mode & 04000) { |
| 650 | error("%s: unknown login name\n", owner); |
| 651 | return(-1); |
| 652 | } |
| 653 | } else |
| 654 | uid = p->pw_uid; |
| 655 | } else |
| 656 | uid = p->pw_uid; |
| 657 | } |
| 658 | gid = groupid; |
| 659 | if (g == NULL || strcmp(group, g->gr_name) != 0) { |
| 660 | if ((g = getgrnam(group)) == NULL) { |
| 661 | if (mode & 02000) { |
| 662 | error("%s: unknown group\n", group); |
| 663 | return(-1); |
| 664 | } |
| 665 | } else |
| 666 | gid = g->gr_gid; |
| 667 | } else |
| 668 | gid = g->gr_gid; |
| 669 | if (userid && groupid != gid) { |
| 670 | for (i = 0; g->gr_mem[i] != NULL; i++) |
| 671 | if (!(strcmp(user, g->gr_mem[i]))) |
| 672 | goto ok; |
| 673 | gid = groupid; |
| 674 | } |
| 675 | ok: |
| 676 | if (chown(file, uid, gid) < 0) { |
| 677 | error("%s: %s\n", file, sys_errlist[errno]); |
| 678 | return(-1); |
| 679 | } |
| 680 | return(0); |
| 681 | } |
| 682 | |
| 683 | /*VARARGS*/ |
| 684 | log(fp, fmt, a1, a2, a3) |
| 685 | FILE *fp; |
| 686 | char *fmt; |
| 687 | int a1, a2, a3; |
| 688 | { |
| 689 | /* Print changes locally if not quiet mode */ |
| 690 | if (!qflag) |
| 691 | printf(fmt, a1, a2, a3); |
| 692 | |
| 693 | /* Save changes (for mailing) if really updating files */ |
| 694 | if (!vflag && fp != NULL) |
| 695 | fprintf(fp, fmt, a1, a2, a3); |
| 696 | } |
| 697 | |
| 698 | /*VARARGS*/ |
| 699 | error(fmt, a1, a2, a3) |
| 700 | char *fmt; |
| 701 | int a1, a2, a3; |
| 702 | { |
| 703 | errs++; |
| 704 | strcpy(buf, "\1rdist: "); |
| 705 | (void) sprintf(buf+8, fmt, a1, a2, a3); |
| 706 | (void) write(rem, buf, strlen(buf)); |
| 707 | if (buf[1] != '\0') { |
| 708 | if (!iamremote) { |
| 709 | fflush(stdout); |
| 710 | (void) write(2, buf+1, strlen(buf+1)); |
| 711 | } |
| 712 | if (lfp != NULL) |
| 713 | (void) fwrite(buf+1, 1, strlen(buf+1), lfp); |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | /*VARARGS*/ |
| 718 | fatal(fmt, a1, a2,a3) |
| 719 | char *fmt; |
| 720 | int a1, a2, a3; |
| 721 | { |
| 722 | errs++; |
| 723 | strcpy(buf, "\2rdist: "); |
| 724 | (void) sprintf(buf+8, fmt, a1, a2, a3); |
| 725 | (void) write(rem, buf, strlen(buf)); |
| 726 | if (buf[1] != '\0') { |
| 727 | if (!iamremote) { |
| 728 | fflush(stdout); |
| 729 | (void) write(2, buf+1, strlen(buf+1)); |
| 730 | } |
| 731 | if (lfp != NULL) |
| 732 | (void) fwrite(buf+1, 1, strlen(buf+1), lfp); |
| 733 | } |
| 734 | cleanup(); |
| 735 | } |
| 736 | |
| 737 | response() |
| 738 | { |
| 739 | char resp, c, *cp = buf; |
| 740 | |
| 741 | if (debug) |
| 742 | printf("response()\n"); |
| 743 | |
| 744 | if (read(rem, &resp, 1) != 1) |
| 745 | lostconn(); |
| 746 | |
| 747 | switch (resp) { |
| 748 | case '\0': |
| 749 | return(0); |
| 750 | |
| 751 | default: |
| 752 | *cp++ = resp; |
| 753 | /* fall into... */ |
| 754 | case '\1': |
| 755 | case '\2': |
| 756 | errs++; |
| 757 | do { |
| 758 | if (read(rem, cp, 1) != 1) |
| 759 | lostconn(); |
| 760 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); |
| 761 | if (buf[0] != '\n') { |
| 762 | if (!iamremote) { |
| 763 | fflush(stdout); |
| 764 | (void) write(2, buf, cp - buf); |
| 765 | } |
| 766 | if (lfp != NULL) |
| 767 | (void) fwrite(buf, 1, cp - buf, lfp); |
| 768 | } |
| 769 | if (resp == '\1') |
| 770 | return(-1); |
| 771 | cleanup(); |
| 772 | } |
| 773 | /*NOTREACHED*/ |
| 774 | } |
| 775 | |
| 776 | lostconn() |
| 777 | { |
| 778 | if (!iamremote) |
| 779 | fprintf(stderr, "rdist: lost connection\n"); |
| 780 | cleanup(); |
| 781 | } |