| 1 | |
| 2 | /* ar11 - archiver for PDP-11 formatted archives */ |
| 3 | |
| 4 | #include <signal.h> |
| 5 | #include <stdio.h> |
| 6 | #include <sys/types.h> |
| 7 | #include <sys/stat.h> |
| 8 | #define ARMAG -155 /* 017545 */ |
| 9 | struct ar_hdr { |
| 10 | char ar_name[14]; |
| 11 | short ar_date1; |
| 12 | short ar_date2; |
| 13 | char ar_uid; |
| 14 | char ar_gid; |
| 15 | short ar_mode; |
| 16 | short ar_size1; |
| 17 | short ar_size2; |
| 18 | }; |
| 19 | int ar_date; |
| 20 | int ar_size; |
| 21 | #include <signal.h> |
| 22 | struct stat stbuf; |
| 23 | struct ar_hdr arbuf; |
| 24 | union ints |
| 25 | { |
| 26 | struct fun |
| 27 | { |
| 28 | short h1; |
| 29 | short h2; |
| 30 | }; |
| 31 | int w1; |
| 32 | } x; |
| 33 | |
| 34 | #define SKIP 1 |
| 35 | #define IODD 2 |
| 36 | #define OODD 4 |
| 37 | #define HEAD 8 |
| 38 | |
| 39 | char *man = { "mrxtdp" }; |
| 40 | char *opt = { "uvnbai" }; |
| 41 | |
| 42 | int signum[] = {SIGHUP, SIGINT, SIGQUIT, 0}; |
| 43 | int sigdone(); |
| 44 | int rcmd(); |
| 45 | int dcmd(); |
| 46 | int xcmd(); |
| 47 | int tcmd(); |
| 48 | int pcmd(); |
| 49 | int mcmd(); |
| 50 | int (*comfun)(); |
| 51 | char flg[26]; |
| 52 | char **namv; |
| 53 | int namc; |
| 54 | char *arnam; |
| 55 | char *ponam; |
| 56 | char *tfnam; |
| 57 | char *tf1nam; |
| 58 | char *tf2nam; |
| 59 | char *file; |
| 60 | char name[16]; |
| 61 | int af; |
| 62 | int tf; |
| 63 | int tf1; |
| 64 | int tf2; |
| 65 | int bastate; |
| 66 | char buf[512]; |
| 67 | |
| 68 | char *trim(); |
| 69 | char *mktemp(); |
| 70 | char *ctime(); |
| 71 | |
| 72 | main(argc, argv) |
| 73 | char *argv[]; |
| 74 | { |
| 75 | register i; |
| 76 | register char *cp; |
| 77 | |
| 78 | for(i=0; signum[i]; i++) |
| 79 | if(signal(signum[i], SIG_IGN) != SIG_IGN) |
| 80 | signal(signum[i], sigdone); |
| 81 | if(argc < 3) |
| 82 | usage(); |
| 83 | cp = argv[1]; |
| 84 | for(cp = argv[1]; *cp; cp++) |
| 85 | switch(*cp) { |
| 86 | case 'c': |
| 87 | case 'v': |
| 88 | case 'u': |
| 89 | case 'n': |
| 90 | case 'a': |
| 91 | case 'b': |
| 92 | case 'i': |
| 93 | flg[*cp - 'a']++; |
| 94 | continue; |
| 95 | |
| 96 | case 'r': |
| 97 | setcom(rcmd); |
| 98 | continue; |
| 99 | |
| 100 | case 'd': |
| 101 | setcom(dcmd); |
| 102 | continue; |
| 103 | |
| 104 | case 'x': |
| 105 | setcom(xcmd); |
| 106 | continue; |
| 107 | |
| 108 | case 't': |
| 109 | setcom(tcmd); |
| 110 | continue; |
| 111 | |
| 112 | case 'p': |
| 113 | setcom(pcmd); |
| 114 | continue; |
| 115 | |
| 116 | case 'm': |
| 117 | setcom(mcmd); |
| 118 | continue; |
| 119 | |
| 120 | default: |
| 121 | fprintf(stderr, "ar11: bad option `%c'\n", *cp); |
| 122 | done(1); |
| 123 | } |
| 124 | if(flg['i'-'a']) |
| 125 | flg['b'-'a']++; |
| 126 | if(flg['a'-'a'] || flg['b'-'a']) { |
| 127 | bastate = 1; |
| 128 | ponam = trim(argv[2]); |
| 129 | argv++; |
| 130 | argc--; |
| 131 | if(argc < 3) |
| 132 | usage(); |
| 133 | } |
| 134 | arnam = argv[2]; |
| 135 | namv = argv+3; |
| 136 | namc = argc-3; |
| 137 | if(comfun == 0) { |
| 138 | if(flg['u'-'a'] == 0) { |
| 139 | fprintf(stderr, "ar11: one of [%s] must be specified\n", man); |
| 140 | done(1); |
| 141 | } |
| 142 | setcom(rcmd); |
| 143 | } |
| 144 | (*comfun)(); |
| 145 | done(notfound()); |
| 146 | } |
| 147 | |
| 148 | setcom(fun) |
| 149 | int (*fun)(); |
| 150 | { |
| 151 | |
| 152 | if(comfun != 0) { |
| 153 | fprintf(stderr, "ar11: only one of [%s] allowed\n", man); |
| 154 | done(1); |
| 155 | } |
| 156 | comfun = fun; |
| 157 | } |
| 158 | |
| 159 | rcmd() |
| 160 | { |
| 161 | register f; |
| 162 | |
| 163 | init(); |
| 164 | if(getaf() && flg['c'-'a']==0) { |
| 165 | fprintf(stderr, "ar11: %s does not exist\n", arnam); |
| 166 | done(1); |
| 167 | } |
| 168 | while(!getdir()) { |
| 169 | bamatch(); |
| 170 | if(namc == 0 || match()) { |
| 171 | f = stats(); |
| 172 | if(f < 0) { |
| 173 | if(namc) |
| 174 | fprintf(stderr, "ar11: cannot open %s\n", file); |
| 175 | goto cp; |
| 176 | } |
| 177 | if(flg['u'-'a']) |
| 178 | if(stbuf.st_mtime <= ar_date) { |
| 179 | close(f); |
| 180 | goto cp; |
| 181 | } |
| 182 | mesg('r'); |
| 183 | copyfil(af, -1, IODD+SKIP); |
| 184 | movefil(f); |
| 185 | continue; |
| 186 | } |
| 187 | cp: |
| 188 | mesg('c'); |
| 189 | copyfil(af, tf, IODD+OODD+HEAD); |
| 190 | } |
| 191 | cleanup(); |
| 192 | } |
| 193 | |
| 194 | dcmd() |
| 195 | { |
| 196 | |
| 197 | init(); |
| 198 | if(getaf()) |
| 199 | noar(); |
| 200 | while(!getdir()) { |
| 201 | if(match()) { |
| 202 | mesg('d'); |
| 203 | copyfil(af, -1, IODD+SKIP); |
| 204 | continue; |
| 205 | } |
| 206 | mesg('c'); |
| 207 | copyfil(af, tf, IODD+OODD+HEAD); |
| 208 | } |
| 209 | install(); |
| 210 | } |
| 211 | |
| 212 | xcmd() |
| 213 | { |
| 214 | register f; |
| 215 | |
| 216 | if(getaf()) |
| 217 | noar(); |
| 218 | while(!getdir()) { |
| 219 | if(namc == 0 || match()) { |
| 220 | f = creat(file, arbuf.ar_mode & 0777); |
| 221 | if(f < 0) { |
| 222 | fprintf(stderr, "ar11: %s cannot create\n", file); |
| 223 | goto sk; |
| 224 | } |
| 225 | mesg('x'); |
| 226 | copyfil(af, f, IODD); |
| 227 | close(f); |
| 228 | continue; |
| 229 | } |
| 230 | sk: |
| 231 | mesg('c'); |
| 232 | copyfil(af, -1, IODD+SKIP); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | pcmd() |
| 237 | { |
| 238 | |
| 239 | if(getaf()) |
| 240 | noar(); |
| 241 | while(!getdir()) { |
| 242 | if(namc == 0 || match()) { |
| 243 | if(flg['v'-'a']) { |
| 244 | printf("\n<%s>\n\n", file); |
| 245 | fflush(stdout); |
| 246 | } |
| 247 | copyfil(af, 1, IODD); |
| 248 | continue; |
| 249 | } |
| 250 | copyfil(af, -1, IODD+SKIP); |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | mcmd() |
| 255 | { |
| 256 | |
| 257 | init(); |
| 258 | if(getaf()) |
| 259 | noar(); |
| 260 | tf2nam = mktemp("/tmp/v2XXXXX"); |
| 261 | close(creat(tf2nam, 0600)); |
| 262 | tf2 = open(tf2nam, 2); |
| 263 | if(tf2 < 0) { |
| 264 | fprintf(stderr, "ar11: cannot create third temp\n"); |
| 265 | done(1); |
| 266 | } |
| 267 | while(!getdir()) { |
| 268 | bamatch(); |
| 269 | if(match()) { |
| 270 | mesg('m'); |
| 271 | copyfil(af, tf2, IODD+OODD+HEAD); |
| 272 | continue; |
| 273 | } |
| 274 | mesg('c'); |
| 275 | copyfil(af, tf, IODD+OODD+HEAD); |
| 276 | } |
| 277 | install(); |
| 278 | } |
| 279 | |
| 280 | tcmd() |
| 281 | { |
| 282 | |
| 283 | if(getaf()) |
| 284 | noar(); |
| 285 | while(!getdir()) { |
| 286 | if(namc == 0 || match()) { |
| 287 | if(flg['v'-'a']) |
| 288 | longt(); |
| 289 | printf("%s\n", trim(file)); |
| 290 | } |
| 291 | copyfil(af, -1, IODD+SKIP); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | init() |
| 296 | { |
| 297 | static short mbuf = ARMAG; |
| 298 | |
| 299 | tfnam = mktemp("/tmp/vXXXXX"); |
| 300 | close(creat(tfnam, 0600)); |
| 301 | tf = open(tfnam, 2); |
| 302 | if(tf < 0) { |
| 303 | fprintf(stderr, "ar11: cannot create temp file\n"); |
| 304 | done(1); |
| 305 | } |
| 306 | if (write(tf, (char *)&mbuf, sizeof(short)) != sizeof(short)) |
| 307 | wrerr(); |
| 308 | } |
| 309 | |
| 310 | getaf() |
| 311 | { |
| 312 | short mbuf; |
| 313 | |
| 314 | af = open(arnam, 0); |
| 315 | if(af < 0) |
| 316 | return(1); |
| 317 | if (read(af, (char *)&mbuf, sizeof(short)) != sizeof(short) || mbuf!=ARMAG) { |
| 318 | fprintf(stderr, "ar11: %s not in PDP-11 archive format\n", arnam); |
| 319 | done(1); |
| 320 | } |
| 321 | return(0); |
| 322 | } |
| 323 | |
| 324 | usage() |
| 325 | { |
| 326 | printf("usage: ar11 [%s][%s] archive files ...\n", opt, man); |
| 327 | done(1); |
| 328 | } |
| 329 | |
| 330 | noar() |
| 331 | { |
| 332 | |
| 333 | fprintf(stderr, "ar11: %s does not exist\n", arnam); |
| 334 | done(1); |
| 335 | } |
| 336 | |
| 337 | sigdone() |
| 338 | { |
| 339 | done(100); |
| 340 | } |
| 341 | |
| 342 | done(c) |
| 343 | { |
| 344 | |
| 345 | if(tfnam) |
| 346 | unlink(tfnam); |
| 347 | if(tf1nam) |
| 348 | unlink(tf1nam); |
| 349 | if(tf2nam) |
| 350 | unlink(tf2nam); |
| 351 | exit(c); |
| 352 | } |
| 353 | |
| 354 | notfound() |
| 355 | { |
| 356 | register i, n; |
| 357 | |
| 358 | n = 0; |
| 359 | for(i=0; i<namc; i++) |
| 360 | if(namv[i]) { |
| 361 | fprintf(stderr, "ar11: %s not found\n", namv[i]); |
| 362 | n++; |
| 363 | } |
| 364 | return(n); |
| 365 | } |
| 366 | |
| 367 | cleanup() |
| 368 | { |
| 369 | register i, f; |
| 370 | |
| 371 | for(i=0; i<namc; i++) { |
| 372 | file = namv[i]; |
| 373 | if(file == 0) |
| 374 | continue; |
| 375 | namv[i] = 0; |
| 376 | mesg('a'); |
| 377 | f = stats(); |
| 378 | if(f < 0) { |
| 379 | fprintf(stderr, "ar11: %s cannot open\n", file); |
| 380 | continue; |
| 381 | } |
| 382 | movefil(f); |
| 383 | } |
| 384 | install(); |
| 385 | } |
| 386 | |
| 387 | install() |
| 388 | { |
| 389 | register i; |
| 390 | |
| 391 | for(i=0; signum[i]; i++) |
| 392 | signal(signum[i], (int (*)())1); |
| 393 | close(af); |
| 394 | af = creat(arnam, 0666); |
| 395 | if(af < 0) { |
| 396 | fprintf(stderr, "ar11: cannot create %s\n", arnam); |
| 397 | done(1); |
| 398 | } |
| 399 | lseek(tf, 0l, 0); |
| 400 | while((i = read(tf, buf, 512)) > 0) |
| 401 | if (write(af, buf, i) != i) |
| 402 | wrerr(); |
| 403 | if(tf2nam) { |
| 404 | lseek(tf2, 0l, 0); |
| 405 | while((i = read(tf2, buf, 512)) > 0) |
| 406 | if (write(af, buf, i) != i) |
| 407 | wrerr(); |
| 408 | } |
| 409 | if(tf1nam) { |
| 410 | lseek(tf1, 0l, 0); |
| 411 | while((i = read(tf1, buf, 512)) > 0) |
| 412 | if (write(af, buf, i) != i) |
| 413 | wrerr(); |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | /* |
| 418 | * insert the file 'file' |
| 419 | * into the temporary file |
| 420 | */ |
| 421 | movefil(f) |
| 422 | { |
| 423 | register char *cp; |
| 424 | register i; |
| 425 | |
| 426 | cp = trim(file); |
| 427 | for(i=0; i<14; i++) |
| 428 | if(arbuf.ar_name[i] = *cp) |
| 429 | cp++; |
| 430 | x.w1 = stbuf.st_size; |
| 431 | arbuf.ar_size1 = x.h2; |
| 432 | arbuf.ar_size2 = x.h1; |
| 433 | x.w1 = stbuf.st_mtime; |
| 434 | arbuf.ar_date1 = x.h2; |
| 435 | arbuf.ar_date2 = x.h1; |
| 436 | arbuf.ar_uid = stbuf.st_uid; |
| 437 | arbuf.ar_gid = stbuf.st_gid; |
| 438 | arbuf.ar_mode = stbuf.st_mode; |
| 439 | copyfil(f, tf, OODD+HEAD); |
| 440 | close(f); |
| 441 | } |
| 442 | |
| 443 | stats() |
| 444 | { |
| 445 | register f; |
| 446 | |
| 447 | f = open(file, 0); |
| 448 | if(f < 0) |
| 449 | return(f); |
| 450 | if(fstat(f, &stbuf) < 0) { |
| 451 | close(f); |
| 452 | return(-1); |
| 453 | } |
| 454 | return(f); |
| 455 | } |
| 456 | |
| 457 | /* |
| 458 | * copy next file |
| 459 | * size given in arbuf |
| 460 | */ |
| 461 | copyfil(fi, fo, flag) |
| 462 | { |
| 463 | register i, o; |
| 464 | int pe; |
| 465 | |
| 466 | if(flag & HEAD) |
| 467 | if (write(fo, (char *)&arbuf, sizeof arbuf) != sizeof arbuf) |
| 468 | wrerr(); |
| 469 | pe = 0; |
| 470 | while(ar_size > 0) { |
| 471 | i = o = 512; |
| 472 | if(ar_size < i) { |
| 473 | i = o = ar_size; |
| 474 | if(i&1) { |
| 475 | if(flag & IODD) |
| 476 | i++; |
| 477 | if(flag & OODD) |
| 478 | o++; |
| 479 | } |
| 480 | } |
| 481 | if(read(fi, buf, i) != i) |
| 482 | pe++; |
| 483 | if((flag & SKIP) == 0) |
| 484 | if (write(fo, buf, o) != o) |
| 485 | wrerr(); |
| 486 | ar_size -= 512; |
| 487 | } |
| 488 | if(pe) |
| 489 | phserr(); |
| 490 | } |
| 491 | |
| 492 | getdir() |
| 493 | { |
| 494 | register i; |
| 495 | |
| 496 | i = read(af, (char *)&arbuf, sizeof arbuf); |
| 497 | if(i != sizeof arbuf) { |
| 498 | if(tf1nam) { |
| 499 | i = tf; |
| 500 | tf = tf1; |
| 501 | tf1 = i; |
| 502 | } |
| 503 | return(1); |
| 504 | } |
| 505 | for(i=0; i<14; i++) |
| 506 | { |
| 507 | name[i] = arbuf.ar_name[i]; |
| 508 | } |
| 509 | file = name; |
| 510 | ar_date = swap(&arbuf.ar_date1); |
| 511 | ar_size = swap(&arbuf.ar_size1); |
| 512 | return(0); |
| 513 | } |
| 514 | |
| 515 | match() |
| 516 | { |
| 517 | register i; |
| 518 | |
| 519 | for(i=0; i<namc; i++) { |
| 520 | if(namv[i] == 0) |
| 521 | continue; |
| 522 | if(strcmp(trim(namv[i]), file) == 0) { |
| 523 | file = namv[i]; |
| 524 | namv[i] = 0; |
| 525 | return(1); |
| 526 | } |
| 527 | } |
| 528 | return(0); |
| 529 | } |
| 530 | |
| 531 | bamatch() |
| 532 | { |
| 533 | register f; |
| 534 | |
| 535 | switch(bastate) { |
| 536 | |
| 537 | case 1: |
| 538 | if(strcmp(file, ponam) != 0) |
| 539 | return; |
| 540 | bastate = 2; |
| 541 | if(flg['a'-'a']) |
| 542 | return; |
| 543 | |
| 544 | case 2: |
| 545 | bastate = 0; |
| 546 | tf1nam = mktemp("/tmp/v1XXXXX"); |
| 547 | close(creat(tf1nam, 0600)); |
| 548 | f = open(tf1nam, 2); |
| 549 | if(f < 0) { |
| 550 | fprintf(stderr, "ar11: cannot create second temp\n"); |
| 551 | return; |
| 552 | } |
| 553 | tf1 = tf; |
| 554 | tf = f; |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | phserr() |
| 559 | { |
| 560 | |
| 561 | fprintf(stderr, "ar11: phase error on %s\n", file); |
| 562 | } |
| 563 | |
| 564 | mesg(c) |
| 565 | { |
| 566 | |
| 567 | if(flg['v'-'a']) |
| 568 | if(c != 'c' || flg['v'-'a'] > 1) |
| 569 | printf("%c - %s\n", c, file); |
| 570 | } |
| 571 | |
| 572 | char * |
| 573 | trim(s) |
| 574 | char *s; |
| 575 | { |
| 576 | register char *p1, *p2; |
| 577 | |
| 578 | for(p1 = s; *p1; p1++) |
| 579 | ; |
| 580 | while(p1 > s) { |
| 581 | if(*--p1 != '/') |
| 582 | break; |
| 583 | *p1 = 0; |
| 584 | } |
| 585 | p2 = s; |
| 586 | for(p1 = s; *p1; p1++) |
| 587 | if(*p1 == '/') |
| 588 | p2 = p1+1; |
| 589 | return(p2); |
| 590 | } |
| 591 | |
| 592 | #define IFMT 060000 |
| 593 | #define ISARG 01000 |
| 594 | #define LARGE 010000 |
| 595 | #define SUID 04000 |
| 596 | #define SGID 02000 |
| 597 | #define ROWN 0400 |
| 598 | #define WOWN 0200 |
| 599 | #define XOWN 0100 |
| 600 | #define RGRP 040 |
| 601 | #define WGRP 020 |
| 602 | #define XGRP 010 |
| 603 | #define ROTH 04 |
| 604 | #define WOTH 02 |
| 605 | #define XOTH 01 |
| 606 | #define STXT 01000 |
| 607 | |
| 608 | longt() |
| 609 | { |
| 610 | register char *cp; |
| 611 | |
| 612 | pmode(); |
| 613 | printf("%3d/%1d", arbuf.ar_uid, arbuf.ar_gid); |
| 614 | printf("%7D", ar_size); |
| 615 | cp = ctime(&ar_date); |
| 616 | printf(" %-12.12s %-4.4s ", cp+4, cp+20); |
| 617 | } |
| 618 | |
| 619 | int m1[] = { 1, ROWN, 'r', '-' }; |
| 620 | int m2[] = { 1, WOWN, 'w', '-' }; |
| 621 | int m3[] = { 2, SUID, 's', XOWN, 'x', '-' }; |
| 622 | int m4[] = { 1, RGRP, 'r', '-' }; |
| 623 | int m5[] = { 1, WGRP, 'w', '-' }; |
| 624 | int m6[] = { 2, SGID, 's', XGRP, 'x', '-' }; |
| 625 | int m7[] = { 1, ROTH, 'r', '-' }; |
| 626 | int m8[] = { 1, WOTH, 'w', '-' }; |
| 627 | int m9[] = { 2, STXT, 't', XOTH, 'x', '-' }; |
| 628 | |
| 629 | int *m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9}; |
| 630 | |
| 631 | pmode() |
| 632 | { |
| 633 | register int **mp; |
| 634 | |
| 635 | for (mp = &m[0]; mp < &m[9];) |
| 636 | select(*mp++); |
| 637 | } |
| 638 | |
| 639 | select(pairp) |
| 640 | int *pairp; |
| 641 | { |
| 642 | register int n, *ap; |
| 643 | |
| 644 | ap = pairp; |
| 645 | n = *ap++; |
| 646 | while (--n>=0 && (arbuf.ar_mode&*ap++)==0) |
| 647 | ap++; |
| 648 | putchar(*ap); |
| 649 | } |
| 650 | |
| 651 | wrerr() |
| 652 | { |
| 653 | perror("ar write error"); |
| 654 | done(1); |
| 655 | } |
| 656 | |
| 657 | swap(word) |
| 658 | short *word; |
| 659 | { |
| 660 | x.h1 = ((struct fun *)word)->h2; |
| 661 | x.h2 = ((struct fun *)word)->h1; |
| 662 | |
| 663 | return(x.w1); |
| 664 | } |