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