| 1 | #ifndef lint |
| 2 | static char *sccsid = "@(#)server.c 4.5 (Berkeley) 83/10/20"; |
| 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 | char *stp[32]; /* stack of saved tp's for directories */ |
| 14 | int sumask; /* saved umask for creating files */ |
| 15 | |
| 16 | static struct passwd *p = NULL; |
| 17 | static struct group *g = NULL; |
| 18 | |
| 19 | extern FILE *lfp; /* log file for mailing changes */ |
| 20 | |
| 21 | extern char *exptilde(); |
| 22 | |
| 23 | /* |
| 24 | * Server routine to read requests and process them. |
| 25 | * Commands are: |
| 26 | * Tname - Transmit file if out of date |
| 27 | * Vname - Verify if file out of date or not |
| 28 | * Qname - Query if file exists. Return mtime & size if it does. |
| 29 | */ |
| 30 | server() |
| 31 | { |
| 32 | char cmdbuf[BUFSIZ]; |
| 33 | register char *cp; |
| 34 | register struct block *bp, *last = NULL; |
| 35 | static struct block cmdblk = { EXCEPT }; |
| 36 | int opts; |
| 37 | |
| 38 | sumask = umask(0); |
| 39 | ga(); |
| 40 | |
| 41 | for (;;) { |
| 42 | cp = cmdbuf; |
| 43 | if (read(rem, cp, 1) <= 0) |
| 44 | return; |
| 45 | if (*cp++ == '\n') { |
| 46 | error("expected control record\n"); |
| 47 | continue; |
| 48 | } |
| 49 | do { |
| 50 | if (read(rem, cp, 1) != 1) |
| 51 | lostconn(); |
| 52 | } while (*cp++ != '\n' && cp < &cmdbuf[BUFSIZ]); |
| 53 | *--cp = '\0'; |
| 54 | cp = cmdbuf; |
| 55 | switch (*cp++) { |
| 56 | case 'X': /* add name to list of files to exclude */ |
| 57 | if (*cp == '\0') |
| 58 | continue; |
| 59 | bp = ALLOC(block); |
| 60 | if (bp == NULL) |
| 61 | fatal("ran out of memory\n"); |
| 62 | bp->b_type = NAME; |
| 63 | bp->b_next = bp->b_args = NULL; |
| 64 | bp->b_name = cp = malloc(strlen(cp) + 1); |
| 65 | if (cp == NULL) |
| 66 | fatal("ran out of memory\n"); |
| 67 | strcpy(cp, &cmdbuf[1]); |
| 68 | if (last == NULL) { |
| 69 | except = &cmdblk; |
| 70 | cmdblk.b_args = last = bp; |
| 71 | } else { |
| 72 | last->b_next = bp; |
| 73 | last = bp; |
| 74 | } |
| 75 | continue; |
| 76 | |
| 77 | case 'T': /* init target file/directory name */ |
| 78 | catname = 1; /* target should be directory */ |
| 79 | goto dotarget; |
| 80 | |
| 81 | case 't': /* init target file/directory name */ |
| 82 | catname = 0; |
| 83 | dotarget: |
| 84 | (void) exptilde(target, cp); |
| 85 | tp = target; |
| 86 | while (*tp) |
| 87 | tp++; |
| 88 | continue; |
| 89 | |
| 90 | case 'S': /* Send. Transfer file if out of date. */ |
| 91 | sendf(cp, NULL, 0); |
| 92 | continue; |
| 93 | |
| 94 | case 'V': /* Verify. See if file is out of date. */ |
| 95 | sendf(cp, NULL, VERIFY); |
| 96 | continue; |
| 97 | |
| 98 | case 'R': /* Receive. Transfer file. */ |
| 99 | recvf(cp, 0); |
| 100 | continue; |
| 101 | |
| 102 | case 'D': /* Directory. Transfer file. */ |
| 103 | recvf(cp, 1); |
| 104 | continue; |
| 105 | |
| 106 | case 'E': /* End. (of directory) */ |
| 107 | *tp = '\0'; |
| 108 | if (--catname < 0) { |
| 109 | error("too many 'E's\n"); |
| 110 | continue; |
| 111 | } |
| 112 | tp = stp[catname]; |
| 113 | *tp = '\0'; |
| 114 | ga(); |
| 115 | continue; |
| 116 | |
| 117 | case 'C': /* Clean. Cleanup a directory */ |
| 118 | if (*cp < '0' || *cp > '7') { |
| 119 | error("bad options\n"); |
| 120 | continue; |
| 121 | } |
| 122 | opts = *cp++ - '0'; |
| 123 | if (*cp++ != ' ') { |
| 124 | error("options not delimited\n"); |
| 125 | continue; |
| 126 | } |
| 127 | clean(cp, opts, 1); |
| 128 | continue; |
| 129 | |
| 130 | case 'Q': /* Query. Does directory exist? */ |
| 131 | query(cp, 1); |
| 132 | continue; |
| 133 | |
| 134 | case 'q': /* query. Does file exist? */ |
| 135 | query(cp, 0); |
| 136 | continue; |
| 137 | |
| 138 | case 'L': /* Log. save message in log file */ |
| 139 | log(lfp, cp); |
| 140 | continue; |
| 141 | |
| 142 | case '\1': |
| 143 | errs++; |
| 144 | continue; |
| 145 | |
| 146 | case '\2': |
| 147 | return; |
| 148 | |
| 149 | default: |
| 150 | error("unknown command type %s\n", cp); |
| 151 | case '\0': |
| 152 | continue; |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | * Transfer the file or directory 'name'. |
| 159 | */ |
| 160 | sendf(lname, rname, opts) |
| 161 | char *lname, *rname; |
| 162 | int opts; |
| 163 | { |
| 164 | register char *cp; |
| 165 | struct stat stb; |
| 166 | int sizerr, f, u; |
| 167 | off_t i; |
| 168 | |
| 169 | if (debug) |
| 170 | printf("sendf(%s, %s, %x)\n", lname, |
| 171 | rname != NULL ? rname : "NULL", opts); |
| 172 | |
| 173 | if (exclude(lname)) |
| 174 | return; |
| 175 | |
| 176 | /* |
| 177 | * First time sendf() is called? |
| 178 | */ |
| 179 | if (rname == NULL) { |
| 180 | rname = exptilde(target, lname); |
| 181 | if (rname == NULL) |
| 182 | return; |
| 183 | tp = lname = target; |
| 184 | while (*tp) |
| 185 | tp++; |
| 186 | /* |
| 187 | * If we are renaming a directory and we want to preserve |
| 188 | * the directory heirarchy (-w), we must strip off the first |
| 189 | * directory name and preserve the rest. |
| 190 | */ |
| 191 | if (opts & STRIP) { |
| 192 | opts &= ~STRIP; |
| 193 | rname = index(rname, '/'); |
| 194 | if (rname == NULL) |
| 195 | rname = tp; |
| 196 | else |
| 197 | rname++; |
| 198 | } else if (!(opts & WHOLE)) { |
| 199 | rname = rindex(lname, '/'); |
| 200 | if (rname == NULL) |
| 201 | rname = lname; |
| 202 | else |
| 203 | rname++; |
| 204 | } |
| 205 | } |
| 206 | if (access(lname, 4) < 0 || stat(lname, &stb) < 0) { |
| 207 | error("%s: %s\n", lname, sys_errlist[errno]); |
| 208 | return; |
| 209 | } |
| 210 | if ((u = update(lname, rname, opts, &stb)) == 0) |
| 211 | return; |
| 212 | |
| 213 | if (p == NULL || p->pw_uid != stb.st_uid) |
| 214 | if ((p = getpwuid(stb.st_uid)) == NULL) { |
| 215 | error("no password entry for uid %d\n", stb.st_uid); |
| 216 | return; |
| 217 | } |
| 218 | if (g == NULL || g->gr_gid != stb.st_gid) |
| 219 | if ((g = getgrgid(stb.st_gid)) == NULL) { |
| 220 | error("no name for group %d\n", stb.st_gid); |
| 221 | return; |
| 222 | } |
| 223 | |
| 224 | switch (stb.st_mode & S_IFMT) { |
| 225 | case S_IFREG: |
| 226 | break; |
| 227 | |
| 228 | case S_IFDIR: |
| 229 | rsendf(lname, rname, opts, &stb, p->pw_name, g->gr_name); |
| 230 | return; |
| 231 | |
| 232 | default: |
| 233 | error("%s: not a plain file\n", lname); |
| 234 | return; |
| 235 | } |
| 236 | |
| 237 | log(lfp, "%s: %s\n", u == 2 ? "updating" : "installing", lname); |
| 238 | |
| 239 | if (opts & VERIFY) |
| 240 | return; |
| 241 | |
| 242 | if ((f = open(lname, 0)) < 0) { |
| 243 | error("%s: %s\n", lname, sys_errlist[errno]); |
| 244 | return; |
| 245 | } |
| 246 | (void) sprintf(buf, "R%1o %04o %D %D %s %s %s\n", opts, |
| 247 | stb.st_mode & 07777, stb.st_size, stb.st_mtime, |
| 248 | p->pw_name, g->gr_name, rname); |
| 249 | if (debug) |
| 250 | printf("buf = %s", buf); |
| 251 | (void) write(rem, buf, strlen(buf)); |
| 252 | if (response() < 0) { |
| 253 | (void) close(f); |
| 254 | return; |
| 255 | } |
| 256 | sizerr = 0; |
| 257 | for (i = 0; i < stb.st_size; i += BUFSIZ) { |
| 258 | int amt = BUFSIZ; |
| 259 | if (i + amt > stb.st_size) |
| 260 | amt = stb.st_size - i; |
| 261 | if (sizerr == 0 && read(f, buf, amt) != amt) |
| 262 | sizerr = 1; |
| 263 | (void) write(rem, buf, amt); |
| 264 | } |
| 265 | (void) close(f); |
| 266 | if (sizerr) |
| 267 | error("%s: file changed size\n", lname); |
| 268 | else |
| 269 | ga(); |
| 270 | (void) response(); |
| 271 | } |
| 272 | |
| 273 | rsendf(lname, rname, opts, st, owner, group) |
| 274 | char *lname, *rname; |
| 275 | int opts; |
| 276 | struct stat *st; |
| 277 | char *owner, *group; |
| 278 | { |
| 279 | DIR *d; |
| 280 | struct direct *dp; |
| 281 | char *otp, *cp; |
| 282 | int len; |
| 283 | |
| 284 | if (debug) |
| 285 | printf("rsendf(%s, %s, %x, %x, %s, %s)\n", lname, rname, |
| 286 | opts, st, owner, group); |
| 287 | |
| 288 | if ((d = opendir(lname)) == NULL) { |
| 289 | error("%s: %s\n", lname, sys_errlist[errno]); |
| 290 | return; |
| 291 | } |
| 292 | (void) sprintf(buf, "D%1o %04o 0 0 %s %s %s\n", opts, |
| 293 | st->st_mode & 07777, owner, group, rname); |
| 294 | if (debug) |
| 295 | printf("buf = %s", buf); |
| 296 | (void) write(rem, buf, strlen(buf)); |
| 297 | if (response() < 0) { |
| 298 | closedir(d); |
| 299 | return; |
| 300 | } |
| 301 | otp = tp; |
| 302 | len = tp - target; |
| 303 | while (dp = readdir(d)) { |
| 304 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) |
| 305 | continue; |
| 306 | if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) { |
| 307 | error("%s/%s: Name too long\n", target, dp->d_name); |
| 308 | continue; |
| 309 | } |
| 310 | tp = otp; |
| 311 | *tp++ = '/'; |
| 312 | cp = dp->d_name; |
| 313 | while (*tp++ = *cp++) |
| 314 | ; |
| 315 | tp--; |
| 316 | sendf(target, dp->d_name, opts); |
| 317 | } |
| 318 | closedir(d); |
| 319 | (void) write(rem, "E\n", 2); |
| 320 | (void) response(); |
| 321 | tp = otp; |
| 322 | *tp = '\0'; |
| 323 | } |
| 324 | |
| 325 | /* |
| 326 | * Check to see if file needs to be updated on the remote machine. |
| 327 | * Returns 0 if no update, 1 if remote doesn't exist, and 2 if out of date. |
| 328 | */ |
| 329 | update(lname, rname, opts, st) |
| 330 | char *lname, *rname; |
| 331 | int opts; |
| 332 | struct stat *st; |
| 333 | { |
| 334 | register char *cp; |
| 335 | register off_t size; |
| 336 | register time_t mtime; |
| 337 | |
| 338 | if (debug) |
| 339 | printf("update(%s, %s, %x, %x)\n", lname, rname, opts, st); |
| 340 | |
| 341 | /* |
| 342 | * Check to see if the file exists on the remote machine. |
| 343 | */ |
| 344 | (void) sprintf(buf, "%c%s\n", ISDIR(st->st_mode) ? 'Q' : 'q', rname); |
| 345 | if (debug) |
| 346 | printf("buf = %s", buf); |
| 347 | (void) write(rem, buf, strlen(buf)); |
| 348 | cp = buf; |
| 349 | do { |
| 350 | if (read(rem, cp, 1) != 1) |
| 351 | lostconn(); |
| 352 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); |
| 353 | |
| 354 | switch (buf[0]) { |
| 355 | case 'Y': |
| 356 | break; |
| 357 | |
| 358 | case 'N': /* file doesn't exist so install it */ |
| 359 | return(1); |
| 360 | |
| 361 | case '\1': |
| 362 | errs++; |
| 363 | if (cp > &buf[2]) { |
| 364 | if (!iamremote) { |
| 365 | fflush(stdout); |
| 366 | (void) write(2, cp, cp - buf); |
| 367 | } |
| 368 | if (lfp != NULL) |
| 369 | (void) fwrite(cp, 1, cp - buf, lfp); |
| 370 | } |
| 371 | return(0); |
| 372 | |
| 373 | default: |
| 374 | error("unexpected response '%c' to query\n", buf[0]); |
| 375 | return(0); |
| 376 | } |
| 377 | |
| 378 | cp = &buf[1]; |
| 379 | if (*cp == '\n') |
| 380 | return(2); |
| 381 | |
| 382 | size = 0; |
| 383 | while (isdigit(*cp)) |
| 384 | size = size * 10 + (*cp++ - '0'); |
| 385 | if (*cp++ != ' ') { |
| 386 | error("size not delimited\n"); |
| 387 | return(0); |
| 388 | } |
| 389 | mtime = 0; |
| 390 | while (isdigit(*cp)) |
| 391 | mtime = mtime * 10 + (*cp++ - '0'); |
| 392 | if (*cp != '\n') { |
| 393 | error("mtime not delimited\n"); |
| 394 | return(0); |
| 395 | } |
| 396 | /* |
| 397 | * File needs to be updated? |
| 398 | */ |
| 399 | if (opts & YOUNGER) { |
| 400 | if (st->st_mtime == mtime) |
| 401 | return(0); |
| 402 | if (st->st_mtime < mtime) { |
| 403 | log(lfp, "Warning: %s: remote copy is newer\n", lname); |
| 404 | return(0); |
| 405 | } |
| 406 | } else if (st->st_mtime == mtime && st->st_size == size) |
| 407 | return(0); |
| 408 | return(2); |
| 409 | } |
| 410 | |
| 411 | /* |
| 412 | * Query. Check to see if file exists. Return one of the following: |
| 413 | * N\n - doesn't exist |
| 414 | * Ysize mtime\n - exists and its a regular file (size & mtime of file) |
| 415 | * Y\n - exists and its a directory |
| 416 | * ^Aerror message\n |
| 417 | */ |
| 418 | query(name, isdir) |
| 419 | char *name; |
| 420 | { |
| 421 | struct stat stb; |
| 422 | |
| 423 | if (catname) |
| 424 | (void) sprintf(tp, "/%s", name); |
| 425 | |
| 426 | again: |
| 427 | if (stat(target, &stb) < 0) { |
| 428 | (void) write(rem, "N\n", 2); |
| 429 | *tp = '\0'; |
| 430 | return; |
| 431 | } |
| 432 | |
| 433 | switch (stb.st_mode & S_IFMT) { |
| 434 | case S_IFREG: |
| 435 | (void) sprintf(buf, "Y%D %D\n", stb.st_size, stb.st_mtime); |
| 436 | (void) write(rem, buf, strlen(buf)); |
| 437 | break; |
| 438 | |
| 439 | case S_IFDIR: |
| 440 | /* |
| 441 | * If file -> directory, need to cat name to target and stat. |
| 442 | */ |
| 443 | if (!isdir && !catname) { |
| 444 | isdir = 1; |
| 445 | (void) sprintf(tp, "/%s", name); |
| 446 | goto again; |
| 447 | } |
| 448 | (void) write(rem, "Y\n", 2); |
| 449 | break; |
| 450 | |
| 451 | default: |
| 452 | error("%s: not a plain file\n", name); |
| 453 | break; |
| 454 | } |
| 455 | *tp = '\0'; |
| 456 | } |
| 457 | |
| 458 | recvf(cmd, isdir) |
| 459 | char *cmd; |
| 460 | int isdir; |
| 461 | { |
| 462 | register char *cp; |
| 463 | int f, mode, opts, wrerr, olderrno; |
| 464 | off_t i, size; |
| 465 | time_t mtime; |
| 466 | struct stat stb; |
| 467 | struct timeval tvp[2]; |
| 468 | char *owner, *group, *dir; |
| 469 | char new[BUFSIZ]; |
| 470 | extern char *tmpname; |
| 471 | |
| 472 | |
| 473 | cp = cmd; |
| 474 | if (*cp < '0' || *cp > '7') { |
| 475 | error("bad options\n"); |
| 476 | return; |
| 477 | } |
| 478 | opts = *cp++ - '0'; |
| 479 | if (*cp++ != ' ') { |
| 480 | error("options not delimited\n"); |
| 481 | return; |
| 482 | } |
| 483 | mode = 0; |
| 484 | while (cp < cmd+6) { |
| 485 | if (*cp < '0' || *cp > '7') { |
| 486 | error("bad mode\n"); |
| 487 | return; |
| 488 | } |
| 489 | mode = (mode << 3) | (*cp++ - '0'); |
| 490 | } |
| 491 | if (*cp++ != ' ') { |
| 492 | error("mode not delimited\n"); |
| 493 | return; |
| 494 | } |
| 495 | size = 0; |
| 496 | while (isdigit(*cp)) |
| 497 | size = size * 10 + (*cp++ - '0'); |
| 498 | if (*cp++ != ' ') { |
| 499 | error("size not delimited\n"); |
| 500 | return; |
| 501 | } |
| 502 | mtime = 0; |
| 503 | while (isdigit(*cp)) |
| 504 | mtime = mtime * 10 + (*cp++ - '0'); |
| 505 | if (*cp++ != ' ') { |
| 506 | error("mtime not delimited\n"); |
| 507 | return; |
| 508 | } |
| 509 | owner = cp; |
| 510 | while (*cp && *cp != ' ') |
| 511 | cp++; |
| 512 | if (*cp != ' ') { |
| 513 | error("owner name not delimited\n"); |
| 514 | return; |
| 515 | } |
| 516 | *cp++ = '\0'; |
| 517 | group = cp; |
| 518 | while (*cp && *cp != ' ') |
| 519 | cp++; |
| 520 | if (*cp != ' ') { |
| 521 | error("group name not delimited\n"); |
| 522 | return; |
| 523 | } |
| 524 | *cp++ = '\0'; |
| 525 | |
| 526 | new[0] = '\0'; |
| 527 | if (isdir) { |
| 528 | if (catname >= sizeof(stp)) { |
| 529 | error("%s: too many directory levels\n", target); |
| 530 | return; |
| 531 | } |
| 532 | stp[catname] = tp; |
| 533 | if (catname++) { |
| 534 | *tp++ = '/'; |
| 535 | while (*tp++ = *cp++) |
| 536 | ; |
| 537 | tp--; |
| 538 | } |
| 539 | if (opts & VERIFY) { |
| 540 | ga(); |
| 541 | return; |
| 542 | } |
| 543 | if (stat(target, &stb) == 0) { |
| 544 | if (!ISDIR(stb.st_mode)) { |
| 545 | errno = ENOTDIR; |
| 546 | goto bad; |
| 547 | } |
| 548 | } else { |
| 549 | if (chkparent(target) < 0) |
| 550 | goto bad; |
| 551 | if (mkdir(target, mode) < 0) |
| 552 | goto bad; |
| 553 | if (chog(target, owner, group, mode) < 0) |
| 554 | return; |
| 555 | } |
| 556 | ga(); |
| 557 | return; |
| 558 | } |
| 559 | |
| 560 | if (catname) |
| 561 | (void) sprintf(tp, "/%s", cp); |
| 562 | if (stat(target, &stb) == 0) { |
| 563 | switch (stb.st_mode & S_IFMT) { |
| 564 | case S_IFREG: |
| 565 | break; |
| 566 | |
| 567 | case S_IFDIR: |
| 568 | if (!catname) { |
| 569 | (void) sprintf(tp, "/%s", cp); |
| 570 | break; |
| 571 | } |
| 572 | |
| 573 | default: |
| 574 | error("%s: not a regular file\n", target); |
| 575 | return; |
| 576 | } |
| 577 | } |
| 578 | if (chkparent(target) < 0) |
| 579 | goto bad; |
| 580 | cp = rindex(target, '/'); |
| 581 | if (cp == NULL) |
| 582 | dir = "."; |
| 583 | else if (cp == target) { |
| 584 | dir = "/"; |
| 585 | cp = NULL; |
| 586 | } else { |
| 587 | dir = target; |
| 588 | *cp = '\0'; |
| 589 | } |
| 590 | (void) sprintf(new, "%s/%s", dir, tmpname); |
| 591 | if (cp != NULL) |
| 592 | *cp = '/'; |
| 593 | if ((f = creat(new, mode)) < 0) |
| 594 | goto bad1; |
| 595 | if (chog(new, owner, group, mode) < 0) { |
| 596 | (void) close(f); |
| 597 | (void) unlink(new); |
| 598 | return; |
| 599 | } |
| 600 | ga(); |
| 601 | |
| 602 | wrerr = 0; |
| 603 | for (i = 0; i < size; i += BUFSIZ) { |
| 604 | int amt = BUFSIZ; |
| 605 | |
| 606 | cp = buf; |
| 607 | if (i + amt > size) |
| 608 | amt = size - i; |
| 609 | do { |
| 610 | int j = read(rem, cp, amt); |
| 611 | |
| 612 | if (j <= 0) { |
| 613 | (void) close(f); |
| 614 | (void) unlink(new); |
| 615 | cleanup(); |
| 616 | } |
| 617 | amt -= j; |
| 618 | cp += j; |
| 619 | } while (amt > 0); |
| 620 | amt = BUFSIZ; |
| 621 | if (i + amt > size) |
| 622 | amt = size - i; |
| 623 | if (wrerr == 0 && write(f, buf, amt) != amt) { |
| 624 | olderrno = errno; |
| 625 | wrerr++; |
| 626 | } |
| 627 | } |
| 628 | (void) response(); |
| 629 | if (wrerr) { |
| 630 | error("%s: %s\n", cp, sys_errlist[olderrno]); |
| 631 | (void) close(f); |
| 632 | (void) unlink(new); |
| 633 | return; |
| 634 | } |
| 635 | |
| 636 | /* |
| 637 | * Set last modified time |
| 638 | */ |
| 639 | (void) fstat(f, &stb); |
| 640 | (void) close(f); |
| 641 | tvp[0].tv_sec = stb.st_atime; |
| 642 | tvp[0].tv_usec = 0; |
| 643 | tvp[1].tv_sec = mtime; |
| 644 | tvp[1].tv_usec = 0; |
| 645 | if (utimes(new, tvp) < 0) { |
| 646 | bad1: |
| 647 | error("%s: %s\n", new, sys_errlist[errno]); |
| 648 | if (new[0]) |
| 649 | (void) unlink(new); |
| 650 | return; |
| 651 | } |
| 652 | |
| 653 | if (rename(new, target) < 0) { |
| 654 | bad: |
| 655 | error("%s: %s\n", target, sys_errlist[errno]); |
| 656 | if (new[0]) |
| 657 | (void) unlink(new); |
| 658 | return; |
| 659 | } |
| 660 | ga(); |
| 661 | } |
| 662 | |
| 663 | /* |
| 664 | * Check parent directory for write permission and create if it doesn't |
| 665 | * exist. |
| 666 | */ |
| 667 | chkparent(name) |
| 668 | char *name; |
| 669 | { |
| 670 | register char *cp, *dir; |
| 671 | extern int userid, groupid; |
| 672 | |
| 673 | cp = rindex(name, '/'); |
| 674 | if (cp == NULL) |
| 675 | dir = "."; |
| 676 | else if (cp == name) { |
| 677 | dir = "/"; |
| 678 | cp = NULL; |
| 679 | } else { |
| 680 | dir = name; |
| 681 | *cp = '\0'; |
| 682 | } |
| 683 | if (access(dir, 2) == 0) { |
| 684 | if (cp != NULL) |
| 685 | *cp = '/'; |
| 686 | return(0); |
| 687 | } |
| 688 | if (errno == ENOENT) { |
| 689 | if (rindex(dir, '/') != NULL && chkparent(dir) < 0) |
| 690 | goto bad; |
| 691 | if (!strcmp(dir, ".") || !strcmp(dir, "/")) |
| 692 | goto bad; |
| 693 | if (mkdir(dir, 0777 & ~sumask) < 0) |
| 694 | goto bad; |
| 695 | if (chown(dir, userid, groupid) < 0) { |
| 696 | (void) unlink(dir); |
| 697 | goto bad; |
| 698 | } |
| 699 | if (cp != NULL) |
| 700 | *cp = '/'; |
| 701 | return(0); |
| 702 | } |
| 703 | |
| 704 | bad: |
| 705 | if (cp != NULL) |
| 706 | *cp = '/'; |
| 707 | return(-1); |
| 708 | } |
| 709 | |
| 710 | /* |
| 711 | * Change owner and group of file. |
| 712 | */ |
| 713 | chog(file, owner, group, mode) |
| 714 | char *file, *owner, *group; |
| 715 | int mode; |
| 716 | { |
| 717 | extern int userid, groupid; |
| 718 | extern char user[]; |
| 719 | register int i; |
| 720 | int uid, gid; |
| 721 | |
| 722 | uid = userid; |
| 723 | if (userid == 0) { |
| 724 | if (p == NULL || strcmp(owner, p->pw_name) != 0) { |
| 725 | if ((p = getpwnam(owner)) == NULL) { |
| 726 | if (mode & 04000) { |
| 727 | error("%s: unknown login name\n", owner); |
| 728 | return(-1); |
| 729 | } |
| 730 | } else |
| 731 | uid = p->pw_uid; |
| 732 | } else |
| 733 | uid = p->pw_uid; |
| 734 | } |
| 735 | gid = groupid; |
| 736 | if (g == NULL || strcmp(group, g->gr_name) != 0) { |
| 737 | if ((g = getgrnam(group)) == NULL) { |
| 738 | if (mode & 02000) { |
| 739 | error("%s: unknown group\n", group); |
| 740 | return(-1); |
| 741 | } |
| 742 | } else |
| 743 | gid = g->gr_gid; |
| 744 | } else |
| 745 | gid = g->gr_gid; |
| 746 | if (userid && groupid != gid) { |
| 747 | for (i = 0; g->gr_mem[i] != NULL; i++) |
| 748 | if (!(strcmp(user, g->gr_mem[i]))) |
| 749 | goto ok; |
| 750 | gid = groupid; |
| 751 | } |
| 752 | ok: |
| 753 | if (chown(file, uid, gid) < 0) { |
| 754 | error("%s: %s\n", file, sys_errlist[errno]); |
| 755 | return(-1); |
| 756 | } |
| 757 | return(0); |
| 758 | } |
| 759 | |
| 760 | /* |
| 761 | * Check for files on the machine being updated that are not on the master |
| 762 | * machine and remove them. |
| 763 | */ |
| 764 | rmchk(lname, rname, opts) |
| 765 | char *lname, *rname; |
| 766 | int opts; |
| 767 | { |
| 768 | register char *cp; |
| 769 | struct stat stb; |
| 770 | |
| 771 | if (debug) |
| 772 | printf("rmchk(%s, %s, %x)\n", lname, |
| 773 | rname != NULL ? rname : "NULL", opts); |
| 774 | |
| 775 | if (exclude(lname)) |
| 776 | return; |
| 777 | |
| 778 | /* |
| 779 | * First time rmchk() is called? |
| 780 | */ |
| 781 | if (rname == NULL) { |
| 782 | rname = exptilde(target, lname); |
| 783 | if (rname == NULL) |
| 784 | return; |
| 785 | tp = lname = target; |
| 786 | while (*tp) |
| 787 | tp++; |
| 788 | /* |
| 789 | * If we are renaming a directory and we want to preserve |
| 790 | * the directory heirarchy (-w), we must strip off the first |
| 791 | * directory name and preserve the rest. |
| 792 | */ |
| 793 | if (opts & STRIP) { |
| 794 | opts &= ~STRIP; |
| 795 | rname = index(rname, '/'); |
| 796 | if (rname == NULL) |
| 797 | rname = tp; |
| 798 | else |
| 799 | rname++; |
| 800 | } else if (!(opts & WHOLE)) { |
| 801 | rname = rindex(lname, '/'); |
| 802 | if (rname == NULL) |
| 803 | rname = lname; |
| 804 | else |
| 805 | rname++; |
| 806 | } |
| 807 | } |
| 808 | if (debug) |
| 809 | printf("lname = %s, rname = %s\n", lname, rname); |
| 810 | if (access(lname, 4) < 0 || stat(lname, &stb) < 0) { |
| 811 | error("%s: %s\n", lname, sys_errlist[errno]); |
| 812 | return; |
| 813 | } |
| 814 | if (!ISDIR(stb.st_mode)) |
| 815 | return; |
| 816 | /* |
| 817 | * Tell the remote to clean the files from the last directory sent. |
| 818 | */ |
| 819 | (void) sprintf(buf, "C%o %s\n", opts & VERIFY, rname); |
| 820 | if (debug) |
| 821 | printf("buf = %s", buf); |
| 822 | (void) write(rem, buf, strlen(buf)); |
| 823 | if (response() < 0) |
| 824 | return; |
| 825 | catname = 0; |
| 826 | for (;;) { |
| 827 | cp = buf; |
| 828 | do { |
| 829 | if (read(rem, cp, 1) != 1) |
| 830 | lostconn(); |
| 831 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); |
| 832 | |
| 833 | if (debug) { |
| 834 | printf("readbuf = "); |
| 835 | fwrite(buf, 1, cp - buf, stdout); |
| 836 | } |
| 837 | switch (buf[0]) { |
| 838 | case 'Q': /* its a directory on the remote end */ |
| 839 | case 'q': /* its a regular file on the remote end */ |
| 840 | *--cp = '\0'; |
| 841 | (void) sprintf(tp, "/%s", buf + 1); |
| 842 | if (debug) |
| 843 | printf("check %s\n", target); |
| 844 | if (stat(target, &stb) < 0) |
| 845 | (void) write(rem, "N\n", 2); |
| 846 | else if (buf[0] == 'Q' && ISDIR(stb.st_mode)) { |
| 847 | if (catname >= sizeof(stp)) { |
| 848 | error("%s: too many directory levels\n", target); |
| 849 | break; |
| 850 | } |
| 851 | (void) write(rem, "Y\n", 2); |
| 852 | if (response() < 0) |
| 853 | break; |
| 854 | stp[catname++] = tp; |
| 855 | while (*tp) |
| 856 | tp++; |
| 857 | } else |
| 858 | (void) write(rem, "y\n", 2); |
| 859 | break; |
| 860 | |
| 861 | case 'E': |
| 862 | if (catname < 0) |
| 863 | fatal("too many 'E's\n"); |
| 864 | ga(); |
| 865 | if (catname == 0) |
| 866 | return; |
| 867 | tp = stp[--catname]; |
| 868 | *tp = '\0'; |
| 869 | break; |
| 870 | |
| 871 | case '\0': |
| 872 | *--cp = '\0'; |
| 873 | if (buf[1]) |
| 874 | log(lfp, "%s\n", buf + 1); |
| 875 | break; |
| 876 | |
| 877 | case '\1': |
| 878 | case '\2': |
| 879 | errs++; |
| 880 | if (buf[1] != '\n') { |
| 881 | if (!iamremote) { |
| 882 | fflush(stdout); |
| 883 | (void) write(2, buf + 1, cp - buf + 1); |
| 884 | } |
| 885 | if (lfp != NULL) |
| 886 | (void) fwrite(buf + 1, 1, cp - buf + 1, lfp); |
| 887 | } |
| 888 | if (buf[0] == '\2') |
| 889 | cleanup(); |
| 890 | break; |
| 891 | |
| 892 | default: |
| 893 | error("unknown response type %s\n", buf[0]); |
| 894 | } |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | /* |
| 899 | * Check the directory for extraneous files and remove them. |
| 900 | */ |
| 901 | clean(lname, opts, first) |
| 902 | char *lname; |
| 903 | int opts, first; |
| 904 | { |
| 905 | DIR *d; |
| 906 | struct direct *dp; |
| 907 | register char *cp; |
| 908 | struct stat stb; |
| 909 | char *ootp, *otp; |
| 910 | int len; |
| 911 | |
| 912 | if (first) { |
| 913 | ootp = tp; |
| 914 | if (catname) { |
| 915 | *tp++ = '/'; |
| 916 | cp = lname; |
| 917 | while (*tp++ = *cp++) |
| 918 | ; |
| 919 | tp--; |
| 920 | } |
| 921 | if (stat(target, &stb) < 0) { |
| 922 | if (errno == ENOENT) { |
| 923 | ga(); |
| 924 | goto done; |
| 925 | } |
| 926 | bad: |
| 927 | error("%s: %s\n", target, sys_errlist[errno]); |
| 928 | tp = otp; |
| 929 | *tp = '\0'; |
| 930 | return; |
| 931 | } |
| 932 | /* |
| 933 | * This should be a directory because its a directory on the |
| 934 | * master machine. If not, let install complain about it. |
| 935 | */ |
| 936 | if (!ISDIR(stb.st_mode)) { |
| 937 | ga(); |
| 938 | goto done; |
| 939 | } |
| 940 | } |
| 941 | if (access(target, 6) < 0 || (d = opendir(target)) == NULL) |
| 942 | goto bad; |
| 943 | ga(); |
| 944 | |
| 945 | otp = tp; |
| 946 | len = tp - target; |
| 947 | while (dp = readdir(d)) { |
| 948 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) |
| 949 | continue; |
| 950 | if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) { |
| 951 | error("%s/%s: Name too long\n", target, dp->d_name); |
| 952 | continue; |
| 953 | } |
| 954 | tp = otp; |
| 955 | *tp++ = '/'; |
| 956 | cp = dp->d_name;; |
| 957 | while (*tp++ = *cp++) |
| 958 | ; |
| 959 | tp--; |
| 960 | if (stat(target, &stb) < 0) { |
| 961 | error("%s: %s\n", target, sys_errlist[errno]); |
| 962 | continue; |
| 963 | } |
| 964 | (void) sprintf(buf, "%c%s\n", ISDIR(stb.st_mode) ? 'Q' : 'q', |
| 965 | dp->d_name); |
| 966 | (void) write(rem, buf, strlen(buf)); |
| 967 | cp = buf; |
| 968 | do { |
| 969 | if (read(rem, cp, 1) != 1) |
| 970 | lostconn(); |
| 971 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); |
| 972 | *--cp = '\0'; |
| 973 | cp = buf; |
| 974 | if (*cp != 'N') { |
| 975 | if (*cp == 'Y' && ISDIR(stb.st_mode)) |
| 976 | clean(dp->d_name, opts, 0); |
| 977 | continue; |
| 978 | } |
| 979 | if (!(opts & VERIFY)) |
| 980 | remove(&stb); |
| 981 | } |
| 982 | closedir(d); |
| 983 | done: |
| 984 | tp = (first) ? ootp : otp; |
| 985 | *tp = '\0'; |
| 986 | (void) write(rem, "E\n", 2); |
| 987 | (void) response(); |
| 988 | } |
| 989 | |
| 990 | remove(st) |
| 991 | struct stat *st; |
| 992 | { |
| 993 | DIR *d; |
| 994 | struct direct *dp; |
| 995 | register char *cp; |
| 996 | struct stat stb; |
| 997 | char *otp; |
| 998 | int len; |
| 999 | |
| 1000 | switch (st->st_mode & S_IFMT) { |
| 1001 | case S_IFREG: |
| 1002 | if (unlink(target) < 0) |
| 1003 | goto bad; |
| 1004 | goto removed; |
| 1005 | |
| 1006 | case S_IFDIR: |
| 1007 | break; |
| 1008 | |
| 1009 | default: |
| 1010 | error("%s: not a plain file\n", target); |
| 1011 | return; |
| 1012 | } |
| 1013 | |
| 1014 | if (access(target, 6) < 0 || (d = opendir(target)) == NULL) |
| 1015 | goto bad; |
| 1016 | |
| 1017 | otp = tp; |
| 1018 | len = tp - target; |
| 1019 | while (dp = readdir(d)) { |
| 1020 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) |
| 1021 | continue; |
| 1022 | if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) { |
| 1023 | error("%s/%s: Name too long\n", target, dp->d_name); |
| 1024 | continue; |
| 1025 | } |
| 1026 | tp = otp; |
| 1027 | *tp++ = '/'; |
| 1028 | cp = dp->d_name;; |
| 1029 | while (*tp++ = *cp++) |
| 1030 | ; |
| 1031 | tp--; |
| 1032 | if (stat(target, &stb) < 0) { |
| 1033 | error("%s: %s\n", target, sys_errlist[errno]); |
| 1034 | continue; |
| 1035 | } |
| 1036 | remove(&stb); |
| 1037 | } |
| 1038 | closedir(d); |
| 1039 | tp = otp; |
| 1040 | *tp = '\0'; |
| 1041 | if (rmdir(target) < 0) { |
| 1042 | bad: |
| 1043 | error("%s: %s\n", target, sys_errlist[errno]); |
| 1044 | return; |
| 1045 | } |
| 1046 | removed: |
| 1047 | cp = buf; |
| 1048 | *cp++ = '\0'; |
| 1049 | (void) sprintf(cp, "removed %s\n", target); |
| 1050 | (void) write(rem, buf, strlen(cp) + 1); |
| 1051 | } |
| 1052 | |
| 1053 | /*VARARGS2*/ |
| 1054 | log(fp, fmt, a1, a2, a3) |
| 1055 | FILE *fp; |
| 1056 | char *fmt; |
| 1057 | int a1, a2, a3; |
| 1058 | { |
| 1059 | /* Print changes locally if not quiet mode */ |
| 1060 | if (!qflag) |
| 1061 | printf(fmt, a1, a2, a3); |
| 1062 | |
| 1063 | /* Save changes (for mailing) if really updating files */ |
| 1064 | if (!(options & VERIFY) && fp != NULL) |
| 1065 | fprintf(fp, fmt, a1, a2, a3); |
| 1066 | } |
| 1067 | |
| 1068 | /*VARARGS1*/ |
| 1069 | error(fmt, a1, a2, a3) |
| 1070 | char *fmt; |
| 1071 | int a1, a2, a3; |
| 1072 | { |
| 1073 | errs++; |
| 1074 | strcpy(buf, "\1rdist: "); |
| 1075 | (void) sprintf(buf+8, fmt, a1, a2, a3); |
| 1076 | (void) write(rem, buf, strlen(buf)); |
| 1077 | if (!iamremote) { |
| 1078 | fflush(stdout); |
| 1079 | (void) write(2, buf+1, strlen(buf+1)); |
| 1080 | } |
| 1081 | if (lfp != NULL) |
| 1082 | (void) fwrite(buf+1, 1, strlen(buf+1), lfp); |
| 1083 | } |
| 1084 | |
| 1085 | /*VARARGS1*/ |
| 1086 | fatal(fmt, a1, a2,a3) |
| 1087 | char *fmt; |
| 1088 | int a1, a2, a3; |
| 1089 | { |
| 1090 | errs++; |
| 1091 | strcpy(buf, "\2rdist: "); |
| 1092 | (void) sprintf(buf+8, fmt, a1, a2, a3); |
| 1093 | (void) write(rem, buf, strlen(buf)); |
| 1094 | if (!iamremote) { |
| 1095 | fflush(stdout); |
| 1096 | (void) write(2, buf+1, strlen(buf+1)); |
| 1097 | } |
| 1098 | if (lfp != NULL) |
| 1099 | (void) fwrite(buf+1, 1, strlen(buf+1), lfp); |
| 1100 | cleanup(); |
| 1101 | } |
| 1102 | |
| 1103 | response() |
| 1104 | { |
| 1105 | char resp, *cp = buf; |
| 1106 | |
| 1107 | if (debug) |
| 1108 | printf("response()\n"); |
| 1109 | |
| 1110 | if (read(rem, &resp, 1) != 1) |
| 1111 | lostconn(); |
| 1112 | |
| 1113 | switch (resp) { |
| 1114 | case '\0': |
| 1115 | return(0); |
| 1116 | |
| 1117 | default: |
| 1118 | *cp++ = resp; |
| 1119 | /* fall into... */ |
| 1120 | case '\1': |
| 1121 | case '\2': |
| 1122 | errs++; |
| 1123 | do { |
| 1124 | if (read(rem, cp, 1) != 1) |
| 1125 | lostconn(); |
| 1126 | } while (*cp++ != '\n' && cp < &buf[BUFSIZ]); |
| 1127 | if (buf[0] != '\n') { |
| 1128 | if (!iamremote) { |
| 1129 | fflush(stdout); |
| 1130 | (void) write(2, buf, cp - buf); |
| 1131 | } |
| 1132 | if (lfp != NULL) |
| 1133 | (void) fwrite(buf, 1, cp - buf, lfp); |
| 1134 | } |
| 1135 | if (resp == '\1') |
| 1136 | return(-1); |
| 1137 | cleanup(); |
| 1138 | } |
| 1139 | /*NOTREACHED*/ |
| 1140 | } |
| 1141 | |
| 1142 | lostconn() |
| 1143 | { |
| 1144 | if (!iamremote) |
| 1145 | fprintf(stderr, "rdist: lost connection\n"); |
| 1146 | cleanup(); |
| 1147 | } |