1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 */ 6 7 #ifndef lint 8 static char sccsid[] = "@(#)ar.c 5.3 (Berkeley) 10/22/87"; 9 #endif not lint 10 11 #ifndef lint 12 char copyright[] = 13 "@(#) Copyright (c) 1980 Regents of the University of California.\n\ 14 All rights reserved.\n"; 15 #endif not lint 16 17 /* 18 * ar - portable (ascii) format version 19 */ 20 #include <sys/param.h> 21 #include <sys/stat.h> 22 #include <sys/time.h> 23 24 #include <stdio.h> 25 #include <ar.h> 26 27 struct stat stbuf; 28 struct ar_hdr arbuf; 29 struct lar_hdr { 30 char lar_name[16]; 31 long lar_date; 32 u_short lar_uid; 33 u_short lar_gid; 34 u_short lar_mode; 35 long lar_size; 36 } larbuf; 37 38 #define SKIP 1 39 #define IODD 2 40 #define OODD 4 41 #define HEAD 8 42 43 char *man = { "mrxtdpq" }; 44 char *opt = { "uvnbailo" }; 45 46 int signum[] = {SIGHUP, SIGINT, SIGQUIT, 0}; 47 int sigdone(); 48 long lseek(); 49 int rcmd(); 50 int dcmd(); 51 int xcmd(); 52 int tcmd(); 53 int pcmd(); 54 int mcmd(); 55 int qcmd(); 56 int (*comfun)(); 57 char flg[26]; 58 char **namv; 59 int namc; 60 char *arnam; 61 char *ponam; 62 char *tmpnam = { "/tmp/vXXXXX" }; 63 char *tmp1nam = { "/tmp/v1XXXXX" }; 64 char *tmp2nam = { "/tmp/v2XXXXX" }; 65 char *tfnam; 66 char *tf1nam; 67 char *tf2nam; 68 char *file; 69 char name[16]; 70 int af; 71 int tf; 72 int tf1; 73 int tf2; 74 int qf; 75 int bastate; 76 char buf[MAXBSIZE]; 77 int truncate; /* ok to truncate argument filenames */ 78 79 char *trim(); 80 char *mktemp(); 81 char *ctime(); 82 83 main(argc, argv) 84 char *argv[]; 85 { 86 register i; 87 register char *cp; 88 89 for(i=0; signum[i]; i++) 90 if(signal(signum[i], SIG_IGN) != SIG_IGN) 91 signal(signum[i], sigdone); 92 if(argc < 3) 93 usage(); 94 cp = argv[1]; 95 for(cp = argv[1]; *cp; cp++) 96 switch(*cp) { 97 case 'o': 98 case 'l': 99 case 'v': 100 case 'u': 101 case 'n': 102 case 'a': 103 case 'b': 104 case 'c': 105 case 'i': 106 flg[*cp - 'a']++; 107 continue; 108 109 case 'r': 110 setcom(rcmd); 111 continue; 112 113 case 'd': 114 setcom(dcmd); 115 continue; 116 117 case 'x': 118 setcom(xcmd); 119 continue; 120 121 case 't': 122 setcom(tcmd); 123 continue; 124 125 case 'p': 126 setcom(pcmd); 127 continue; 128 129 case 'm': 130 setcom(mcmd); 131 continue; 132 133 case 'q': 134 setcom(qcmd); 135 continue; 136 137 default: 138 fprintf(stderr, "ar: bad option `%c'\n", *cp); 139 done(1); 140 } 141 if(flg['l'-'a']) { 142 tmpnam = "vXXXXX"; 143 tmp1nam = "v1XXXXX"; 144 tmp2nam = "v2XXXXX"; 145 } 146 if(flg['i'-'a']) 147 flg['b'-'a']++; 148 if(flg['a'-'a'] || flg['b'-'a']) { 149 bastate = 1; 150 ponam = trim(argv[2]); 151 argv++; 152 argc--; 153 if(argc < 3) 154 usage(); 155 } 156 arnam = argv[2]; 157 namv = argv+3; 158 namc = argc-3; 159 if(comfun == 0) { 160 if(flg['u'-'a'] == 0) { 161 fprintf(stderr, "ar: one of [%s] must be specified\n", man); 162 done(1); 163 } 164 setcom(rcmd); 165 } 166 (*comfun)(); 167 done(notfound()); 168 } 169 170 setcom(fun) 171 int (*fun)(); 172 { 173 174 if(comfun != 0) { 175 fprintf(stderr, "ar: only one of [%s] allowed\n", man); 176 done(1); 177 } 178 comfun = fun; 179 } 180 181 rcmd() 182 { 183 register f; 184 185 init(); 186 getaf(); 187 while(!getdir()) { 188 bamatch(); 189 if(namc == 0 || match()) { 190 f = stats(); 191 if(f < 0) { 192 if(namc) 193 fprintf(stderr, "ar: cannot open %s\n", file); 194 goto cp; 195 } 196 if(flg['u'-'a']) 197 if(stbuf.st_mtime <= larbuf.lar_date) { 198 close(f); 199 goto cp; 200 } 201 mesg('r'); 202 copyfil(af, -1, IODD+SKIP); 203 movefil(f); 204 continue; 205 } 206 cp: 207 mesg('c'); 208 copyfil(af, tf, IODD+OODD+HEAD); 209 } 210 cleanup(); 211 } 212 213 dcmd() 214 { 215 216 init(); 217 if(getaf()) 218 noar(); 219 while(!getdir()) { 220 if(match()) { 221 mesg('d'); 222 copyfil(af, -1, IODD+SKIP); 223 continue; 224 } 225 mesg('c'); 226 copyfil(af, tf, IODD+OODD+HEAD); 227 } 228 install(); 229 } 230 231 xcmd() 232 { 233 register f; 234 struct timeval tv[2]; 235 236 if(getaf()) 237 noar(); 238 while(!getdir()) { 239 if(namc == 0 || match()) { 240 f = creat(file, larbuf.lar_mode & 0777); 241 if(f < 0) { 242 fprintf(stderr, "ar: %s cannot create\n", file); 243 goto sk; 244 } 245 mesg('x'); 246 copyfil(af, f, IODD); 247 close(f); 248 if (flg['o'-'a']) { 249 tv[0].tv_sec = tv[1].tv_sec = larbuf.lar_date; 250 tv[0].tv_usec = tv[1].tv_usec = 0; 251 utimes(file, tv); 252 } 253 continue; 254 } 255 sk: 256 mesg('c'); 257 copyfil(af, -1, IODD+SKIP); 258 if (namc > 0 && !morefil()) 259 done(0); 260 } 261 } 262 263 pcmd() 264 { 265 266 if(getaf()) 267 noar(); 268 while(!getdir()) { 269 if(namc == 0 || match()) { 270 if(flg['v'-'a']) { 271 printf("\n<%s>\n\n", file); 272 fflush(stdout); 273 } 274 copyfil(af, 1, IODD); 275 continue; 276 } 277 copyfil(af, -1, IODD+SKIP); 278 } 279 } 280 281 mcmd() 282 { 283 284 init(); 285 if(getaf()) 286 noar(); 287 tf2nam = mktemp(tmp2nam); 288 close(creat(tf2nam, 0600)); 289 tf2 = open(tf2nam, 2); 290 if(tf2 < 0) { 291 fprintf(stderr, "ar: cannot create third temp\n"); 292 done(1); 293 } 294 while(!getdir()) { 295 bamatch(); 296 if(match()) { 297 mesg('m'); 298 copyfil(af, tf2, IODD+OODD+HEAD); 299 continue; 300 } 301 mesg('c'); 302 copyfil(af, tf, IODD+OODD+HEAD); 303 } 304 install(); 305 } 306 307 tcmd() 308 { 309 310 if(getaf()) 311 noar(); 312 while(!getdir()) { 313 if(namc == 0 || match()) { 314 if(flg['v'-'a']) 315 longt(); 316 printf("%s\n", trim(file)); 317 } 318 copyfil(af, -1, IODD+SKIP); 319 } 320 } 321 322 qcmd() 323 { 324 register i, f; 325 326 if (flg['a'-'a'] || flg['b'-'a']) { 327 fprintf(stderr, "ar: abi not allowed with q\n"); 328 done(1); 329 } 330 truncate++; 331 getqf(); 332 for(i=0; signum[i]; i++) 333 signal(signum[i], SIG_IGN); 334 lseek(qf, 0l, 2); 335 for(i=0; i<namc; i++) { 336 file = namv[i]; 337 if(file == 0) 338 continue; 339 namv[i] = 0; 340 mesg('q'); 341 f = stats(); 342 if(f < 0) { 343 fprintf(stderr, "ar: %s cannot open\n", file); 344 continue; 345 } 346 tf = qf; 347 movefil(f); 348 qf = tf; 349 } 350 } 351 352 init() 353 { 354 355 tfnam = mktemp(tmpnam); 356 close(creat(tfnam, 0600)); 357 tf = open(tfnam, 2); 358 if(tf < 0) { 359 fprintf(stderr, "ar: cannot create temp file\n"); 360 done(1); 361 } 362 if (write(tf, ARMAG, SARMAG) != SARMAG) 363 wrerr(); 364 } 365 366 getaf() 367 { 368 char mbuf[SARMAG]; 369 370 af = open(arnam, 0); 371 if(af < 0) 372 return(1); 373 if (read(af, mbuf, SARMAG) != SARMAG || strncmp(mbuf, ARMAG, SARMAG)) { 374 fprintf(stderr, "ar: %s not in archive format\n", arnam); 375 done(1); 376 } 377 return(0); 378 } 379 380 getqf() 381 { 382 char mbuf[SARMAG]; 383 384 if ((qf = open(arnam, 2)) < 0) { 385 if(!flg['c'-'a']) 386 fprintf(stderr, "ar: creating %s\n", arnam); 387 if ((qf = creat(arnam, 0666)) < 0) { 388 fprintf(stderr, "ar: cannot create %s\n", arnam); 389 done(1); 390 } 391 if (write(qf, ARMAG, SARMAG) != SARMAG) 392 wrerr(); 393 } else if (read(qf, mbuf, SARMAG) != SARMAG 394 || strncmp(mbuf, ARMAG, SARMAG)) { 395 fprintf(stderr, "ar: %s not in archive format\n", arnam); 396 done(1); 397 } 398 } 399 400 usage() 401 { 402 printf("usage: ar [%s][%s] archive files ...\n", man, opt); 403 done(1); 404 } 405 406 noar() 407 { 408 409 fprintf(stderr, "ar: %s does not exist\n", arnam); 410 done(1); 411 } 412 413 sigdone() 414 { 415 done(100); 416 } 417 418 done(c) 419 { 420 421 if(tfnam) 422 unlink(tfnam); 423 if(tf1nam) 424 unlink(tf1nam); 425 if(tf2nam) 426 unlink(tf2nam); 427 exit(c); 428 } 429 430 notfound() 431 { 432 register i, n; 433 434 n = 0; 435 for(i=0; i<namc; i++) 436 if(namv[i]) { 437 fprintf(stderr, "ar: %s not found\n", namv[i]); 438 n++; 439 } 440 return(n); 441 } 442 443 morefil() 444 { 445 register i, n; 446 447 n = 0; 448 for(i=0; i<namc; i++) 449 if(namv[i]) 450 n++; 451 return(n); 452 } 453 454 cleanup() 455 { 456 register i, f; 457 458 truncate++; 459 for(i=0; i<namc; i++) { 460 file = namv[i]; 461 if(file == 0) 462 continue; 463 namv[i] = 0; 464 mesg('a'); 465 f = stats(); 466 if(f < 0) { 467 fprintf(stderr, "ar: %s cannot open\n", file); 468 continue; 469 } 470 movefil(f); 471 } 472 install(); 473 } 474 475 install() 476 { 477 register i; 478 479 for(i=0; signum[i]; i++) 480 signal(signum[i], SIG_IGN); 481 if(af < 0) 482 if(!flg['c'-'a']) 483 fprintf(stderr, "ar: creating %s\n", arnam); 484 close(af); 485 af = creat(arnam, 0666); 486 if(af < 0) { 487 fprintf(stderr, "ar: cannot create %s\n", arnam); 488 done(1); 489 } 490 if(tfnam) { 491 lseek(tf, 0l, 0); 492 while((i = read(tf, buf, MAXBSIZE)) > 0) 493 if (write(af, buf, i) != i) 494 wrerr(); 495 } 496 if(tf2nam) { 497 lseek(tf2, 0l, 0); 498 while((i = read(tf2, buf, MAXBSIZE)) > 0) 499 if (write(af, buf, i) != i) 500 wrerr(); 501 } 502 if(tf1nam) { 503 lseek(tf1, 0l, 0); 504 while((i = read(tf1, buf, MAXBSIZE)) > 0) 505 if (write(af, buf, i) != i) 506 wrerr(); 507 } 508 } 509 510 /* 511 * insert the file 'file' 512 * into the temporary file 513 */ 514 movefil(f) 515 { 516 char buf[sizeof(arbuf)+1]; 517 518 (void)sprintf(buf, "%-16s%-12ld%-6u%-6u%-8o%-10ld%-2s", 519 trim(file), 520 stbuf.st_mtime, 521 (u_short)stbuf.st_uid, 522 (u_short)stbuf.st_gid, 523 stbuf.st_mode, 524 stbuf.st_size, 525 ARFMAG); 526 strncpy((char *)&arbuf, buf, sizeof(arbuf)); 527 larbuf.lar_size = stbuf.st_size; 528 copyfil(f, tf, OODD+HEAD); 529 close(f); 530 } 531 532 stats() 533 { 534 register f; 535 536 f = open(file, 0); 537 if(f < 0) 538 return(f); 539 if(fstat(f, &stbuf) < 0) { 540 close(f); 541 return(-1); 542 } 543 return(f); 544 } 545 546 /* 547 * copy next file 548 * size given in arbuf 549 */ 550 copyfil(fi, fo, flag) 551 { 552 register i, o; 553 int pe; 554 555 if(flag & HEAD) { 556 for (i=sizeof(arbuf.ar_name)-1; i>=0; i--) { 557 if (arbuf.ar_name[i]==' ') 558 continue; 559 else if (arbuf.ar_name[i]=='\0') 560 arbuf.ar_name[i] = ' '; 561 else 562 break; 563 } 564 if (write(fo, (char *)&arbuf, sizeof arbuf) != sizeof arbuf) 565 wrerr(); 566 } 567 pe = 0; 568 while(larbuf.lar_size > 0) { 569 i = o = MAXBSIZE; 570 if(larbuf.lar_size < i) { 571 i = o = larbuf.lar_size; 572 if(i&1) { 573 buf[i] = '\n'; 574 if(flag & IODD) 575 i++; 576 if(flag & OODD) 577 o++; 578 } 579 } 580 if(read(fi, buf, i) != i) 581 pe++; 582 if((flag & SKIP) == 0) 583 if (write(fo, buf, o) != o) 584 wrerr(); 585 larbuf.lar_size -= MAXBSIZE; 586 } 587 if(pe) 588 phserr(); 589 } 590 591 getdir() 592 { 593 register char *cp; 594 register i; 595 596 i = read(af, (char *)&arbuf, sizeof arbuf); 597 if(i != sizeof arbuf) { 598 if(tf1nam) { 599 i = tf; 600 tf = tf1; 601 tf1 = i; 602 } 603 return(1); 604 } 605 if (strncmp(arbuf.ar_fmag, ARFMAG, sizeof(arbuf.ar_fmag))) { 606 fprintf(stderr, "ar: malformed archive (at %ld)\n", lseek(af, 0L, 1)); 607 done(1); 608 } 609 cp = arbuf.ar_name + sizeof(arbuf.ar_name); 610 while (*--cp==' ') 611 ; 612 *++cp = '\0'; 613 strncpy(name, arbuf.ar_name, sizeof(arbuf.ar_name)); 614 file = name; 615 strncpy(larbuf.lar_name, name, sizeof(larbuf.lar_name)); 616 sscanf(arbuf.ar_date, "%ld", &larbuf.lar_date); 617 sscanf(arbuf.ar_uid, "%hd", &larbuf.lar_uid); 618 sscanf(arbuf.ar_gid, "%hd", &larbuf.lar_gid); 619 sscanf(arbuf.ar_mode, "%ho", &larbuf.lar_mode); 620 sscanf(arbuf.ar_size, "%ld", &larbuf.lar_size); 621 return(0); 622 } 623 624 match() 625 { 626 register i; 627 628 for(i=0; i<namc; i++) { 629 if(namv[i] == 0) 630 continue; 631 if(strcmp(trim(namv[i]), file) == 0) { 632 file = namv[i]; 633 namv[i] = 0; 634 return(1); 635 } 636 } 637 return(0); 638 } 639 640 bamatch() 641 { 642 register f; 643 644 switch(bastate) { 645 646 case 1: 647 if(strcmp(file, ponam) != 0) 648 return; 649 bastate = 2; 650 if(flg['a'-'a']) 651 return; 652 653 case 2: 654 bastate = 0; 655 tf1nam = mktemp(tmp1nam); 656 close(creat(tf1nam, 0600)); 657 f = open(tf1nam, 2); 658 if(f < 0) { 659 fprintf(stderr, "ar: cannot create second temp\n"); 660 return; 661 } 662 tf1 = tf; 663 tf = f; 664 } 665 } 666 667 phserr() 668 { 669 670 fprintf(stderr, "ar: phase error on %s\n", file); 671 } 672 673 mesg(c) 674 { 675 676 if(flg['v'-'a']) 677 if(c != 'c' || flg['v'-'a'] > 1) 678 printf("%c - %s\n", c, file); 679 } 680 681 char * 682 trim(s) 683 char *s; 684 { 685 register char *p1, *p2; 686 687 /* Strip trailing slashes */ 688 for(p1 = s; *p1; p1++) 689 ; 690 while(p1 > s) { 691 if(*--p1 != '/') 692 break; 693 *p1 = 0; 694 } 695 696 /* Find last component of path; do not zap the path */ 697 p2 = s; 698 for(p1 = s; *p1; p1++) 699 if(*p1 == '/') 700 p2 = p1+1; 701 702 /* 703 * Truncate name if too long, only if we are doing an 'add' 704 * type operation. We only allow 15 cause rest of ar 705 * isn't smart enough to deal with non-null terminated 706 * names. Need an exit status convention... 707 * Need yet another new archive format... 708 */ 709 if (truncate && strlen(p2) > sizeof(arbuf.ar_name) - 1) { 710 fprintf(stderr, "ar: filename %s truncated to ", p2); 711 *(p2 + sizeof(arbuf.ar_name) - 1) = '\0'; 712 fprintf(stderr, "%s\n", p2); 713 } 714 return(p2); 715 } 716 717 #define IFMT 060000 718 #define ISARG 01000 719 #define LARGE 010000 720 #define SUID 04000 721 #define SGID 02000 722 #define ROWN 0400 723 #define WOWN 0200 724 #define XOWN 0100 725 #define RGRP 040 726 #define WGRP 020 727 #define XGRP 010 728 #define ROTH 04 729 #define WOTH 02 730 #define XOTH 01 731 #define STXT 01000 732 733 longt() 734 { 735 register char *cp; 736 737 pmode(); 738 printf("%3d/%1d", larbuf.lar_uid, larbuf.lar_gid); 739 printf("%7ld", larbuf.lar_size); 740 cp = ctime(&larbuf.lar_date); 741 printf(" %-12.12s %-4.4s ", cp+4, cp+20); 742 } 743 744 int m1[] = { 1, ROWN, 'r', '-' }; 745 int m2[] = { 1, WOWN, 'w', '-' }; 746 int m3[] = { 2, SUID, 's', XOWN, 'x', '-' }; 747 int m4[] = { 1, RGRP, 'r', '-' }; 748 int m5[] = { 1, WGRP, 'w', '-' }; 749 int m6[] = { 2, SGID, 's', XGRP, 'x', '-' }; 750 int m7[] = { 1, ROTH, 'r', '-' }; 751 int m8[] = { 1, WOTH, 'w', '-' }; 752 int m9[] = { 2, STXT, 't', XOTH, 'x', '-' }; 753 754 int *m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9}; 755 756 pmode() 757 { 758 register int **mp; 759 760 for (mp = &m[0]; mp < &m[9];) 761 select(*mp++); 762 } 763 764 select(pairp) 765 int *pairp; 766 { 767 register int n, *ap; 768 769 ap = pairp; 770 n = *ap++; 771 while (--n>=0 && (larbuf.lar_mode&*ap++)==0) 772 ap++; 773 putchar(*ap); 774 } 775 776 wrerr() 777 { 778 perror("ar write error"); 779 done(1); 780 } 781