/* Unix SMB/CIFS implementation. replacement routines for broken systems Copyright (C) Andrew Tridgell 1992-1998 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" void replace_dummy(void); void replace_dummy(void) {} #ifndef HAVE_FTRUNCATE /******************************************************************* ftruncate for operating systems that don't have it ********************************************************************/ int ftruncate(int f,SMB_OFF_T l) { struct flock fl; fl.l_whence = 0; fl.l_len = 0; fl.l_start = l; fl.l_type = F_WRLCK; return fcntl(f, F_FREESP, &fl); } #endif /* HAVE_FTRUNCATE */ #ifndef HAVE_STRLCPY /* like strncpy but does not 0 fill the buffer and always null terminates. bufsize is the size of the destination buffer */ size_t strlcpy(char *d, const char *s, size_t bufsize) { size_t len = strlen(s); size_t ret = len; if (bufsize <= 0) return 0; if (len >= bufsize) len = bufsize-1; memcpy(d, s, len); d[len] = 0; return ret; } #endif #ifndef HAVE_STRLCAT /* like strncat but does not 0 fill the buffer and always null terminates. bufsize is the length of the buffer, which should be one more than the maximum resulting string length */ size_t strlcat(char *d, const char *s, size_t bufsize) { size_t len1 = strlen(d); size_t len2 = strlen(s); size_t ret = len1 + len2; if (len1+len2 >= bufsize) { len2 = bufsize - (len1+1); } if (len2 > 0) { memcpy(d+len1, s, len2); d[len1+len2] = 0; } return ret; } #endif #ifndef HAVE_MKTIME /******************************************************************* a mktime() replacement for those who don't have it - contributed by C.A. Lademann Corrections by richard.kettlewell@kewill.com ********************************************************************/ #define MINUTE 60 #define HOUR 60*MINUTE #define DAY 24*HOUR #define YEAR 365*DAY time_t mktime(struct tm *t) { struct tm *u; time_t epoch = 0; int n; int mon [] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, y, m, i; if(t->tm_year < 70) return((time_t)-1); n = t->tm_year + 1900 - 1; epoch = (t->tm_year - 70) * YEAR + ((n / 4 - n / 100 + n / 400) - (1969 / 4 - 1969 / 100 + 1969 / 400)) * DAY; y = t->tm_year + 1900; m = 0; for(i = 0; i < t->tm_mon; i++) { epoch += mon [m] * DAY; if(m == 1 && y % 4 == 0 && (y % 100 != 0 || y % 400 == 0)) epoch += DAY; if(++m > 11) { m = 0; y++; } } epoch += (t->tm_mday - 1) * DAY; epoch += t->tm_hour * HOUR + t->tm_min * MINUTE + t->tm_sec; if((u = localtime(&epoch)) != NULL) { t->tm_sec = u->tm_sec; t->tm_min = u->tm_min; t->tm_hour = u->tm_hour; t->tm_mday = u->tm_mday; t->tm_mon = u->tm_mon; t->tm_year = u->tm_year; t->tm_wday = u->tm_wday; t->tm_yday = u->tm_yday; t->tm_isdst = u->tm_isdst; } return(epoch); } #endif /* !HAVE_MKTIME */ #ifndef HAVE_RENAME /* Rename a file. (from libiberty in GNU binutils) */ int rename(const char *zfrom, const char *zto) { if (link (zfrom, zto) < 0) { if (errno != EEXIST) return -1; if (unlink (zto) < 0 || link (zfrom, zto) < 0) return -1; } return unlink (zfrom); } #endif /* HAVE_RENAME */ #ifndef HAVE_INNETGR #if defined(HAVE_SETNETGRENT) && defined(HAVE_GETNETGRENT) && defined(HAVE_ENDNETGRENT) /* * Search for a match in a netgroup. This replaces it on broken systems. */ int innetgr(const char *group,const char *host,const char *user,const char *dom) { char *hst, *usr, *dm; setnetgrent(group); while (getnetgrent(&hst, &usr, &dm)) { if (((host == 0) || (hst == 0) || !strcmp(host, hst)) && ((user == 0) || (usr == 0) || !strcmp(user, usr)) && ((dom == 0) || (dm == 0) || !strcmp(dom, dm))) { endnetgrent(); return (1); } } endnetgrent(); return (0); } #endif /* HAVE_SETNETGRENT HAVE_GETNETGRENT HAVE_ENDNETGRENT */ #endif /* HAVE_INNETGR */ #ifndef HAVE_INITGROUPS /**************************************************************************** some systems don't have an initgroups call ****************************************************************************/ int initgroups(char *name,gid_t id) { #ifndef HAVE_SETGROUPS static int done; if (!done) { DEBUG(1,("WARNING: running without setgroups\n")); done=1; } /* yikes! no SETGROUPS or INITGROUPS? how can this work? */ return(0); #else /* HAVE_SETGROUPS */ gid_t *grouplst = NULL; int max_gr = groups_max(); int ret; int i,j; struct group *g; char *gr; if((grouplst = (gid_t *)malloc(sizeof(gid_t) * max_gr)) == NULL) { DEBUG(0,("initgroups: malloc fail !\n")); return -1; } grouplst[0] = id; i = 1; while (i < max_gr && ((g = (struct group *)getgrent()) != (struct group *)NULL)) { if (g->gr_gid == id) continue; j = 0; gr = g->gr_mem[0]; while (gr && (*gr != (char)NULL)) { if (strcmp(name,gr) == 0) { grouplst[i] = g->gr_gid; i++; gr = (char *)NULL; break; } gr = g->gr_mem[++j]; } } endgrent(); ret = sys_setgroups(i,grouplst); SAFE_FREE(grouplst); return ret; #endif /* HAVE_SETGROUPS */ } #endif /* HAVE_INITGROUPS */ #if (defined(SecureWare) && defined(SCO)) /* This is needed due to needing the nap() function but we don't want to include the Xenix libraries since that will break other things... BTW: system call # 0x0c28 is the same as calling nap() */ long nap(long milliseconds) { return syscall(0x0c28, milliseconds); } #endif #ifndef HAVE_MEMMOVE /******************************************************************* safely copies memory, ensuring no overlap problems. this is only used if the machine does not have it's own memmove(). this is not the fastest algorithm in town, but it will do for our needs. ********************************************************************/ void *memmove(void *dest,const void *src,int size) { unsigned long d,s; int i; if (dest==src || !size) return(dest); d = (unsigned long)dest; s = (unsigned long)src; if ((d >= (s+size)) || (s >= (d+size))) { /* no overlap */ memcpy(dest,src,size); return(dest); } if (d < s) { /* we can forward copy */ if (s-d >= sizeof(int) && !(s%sizeof(int)) && !(d%sizeof(int)) && !(size%sizeof(int))) { /* do it all as words */ int *idest = (int *)dest; int *isrc = (int *)src; size /= sizeof(int); for (i=0;i= sizeof(int) && !(s%sizeof(int)) && !(d%sizeof(int)) && !(size%sizeof(int))) { /* do it all as words */ int *idest = (int *)dest; int *isrc = (int *)src; size /= sizeof(int); for (i=size-1;i>=0;i--) idest[i] = isrc[i]; } else { /* simplest */ char *cdest = (char *)dest; char *csrc = (char *)src; for (i=size-1;i>=0;i--) cdest[i] = csrc[i]; } } return(dest); } #endif /* HAVE_MEMMOVE */ #ifndef HAVE_STRDUP /**************************************************************************** duplicate a string ****************************************************************************/ char *strdup(const char *s) { size_t len; char *ret; if (!s) return(NULL); len = strlen(s)+1; ret = (char *)malloc(len); if (!ret) return(NULL); memcpy(ret,s,len); return(ret); } #endif /* HAVE_STRDUP */ #ifdef REPLACE_INET_NTOA char *rep_inet_ntoa(struct in_addr ip) { unsigned char *p = (unsigned char *)&ip.s_addr; static char buf[18]; #if WORDS_BIGENDIAN slprintf(buf, 17, "%d.%d.%d.%d", (int)p[0], (int)p[1], (int)p[2], (int)p[3]); #else /* WORDS_BIGENDIAN */ slprintf(buf, 17, "%d.%d.%d.%d", (int)p[3], (int)p[2], (int)p[1], (int)p[0]); #endif /* WORDS_BIGENDIAN */ return buf; } #endif /* REPLACE_INET_NTOA */ #ifndef HAVE_STRTOUL #ifndef ULONG_MAX #define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF */ #endif /* * Convert a string to an unsigned long integer. * Taken from libg++ - libiberty code. * * Ignores `locale' stuff. Assumes that the upper and lower case * alphabets and digits are each contiguous. */ unsigned long strtoul(const char *nptr, char **endptr, int base) { const char *s = nptr; unsigned long acc; int c; unsigned long cutoff; int neg = 0, any, cutlim; /* * See strtol for comments as to the logic used. */ do { c = *s++; } while (isspace(c)); if (c == '-') { neg = 1; c = *s++; } else if (c == '+') c = *s++; if ((base == 0 || base == 16) && c == '0' && (*s == 'x' || *s == 'X')) { c = s[1]; s += 2; base = 16; } if (base == 0) base = c == '0' ? 8 : 10; cutoff = (unsigned long)ULONG_MAX / (unsigned long)base; cutlim = (int)((unsigned long)ULONG_MAX % (unsigned long)base); for (acc = 0, any = 0;; c = *s++) { if (isdigit(c)) c -= '0'; else if (isalpha(c)) c -= isupper(c) ? 'A' - 10 : 'a' - 10; else break; if (c >= base) break; if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim) any = -1; else { any = 1; acc *= base; acc += c; } } if (any < 0) { acc = ULONG_MAX; errno = ERANGE; } else if (neg) acc = -acc; if (endptr != 0) *endptr = (char *) (any ? s - 1 : nptr); return (acc); } #endif /* HAVE_STRTOUL */ #ifndef HAVE_SETLINEBUF int setlinebuf(FILE *stream) { return setvbuf(stream, (char *)NULL, _IOLBF, 0); } #endif /* HAVE_SETLINEBUF */ id='n213' href='#n213'>213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672