1 /* 2 * Copyright (c) 1985, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)interactive.c 8.5 (Berkeley) 5/1/95"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD$"; 40 #endif /* not lint */ 41 42 #include <sys/param.h> 43 #include <sys/stat.h> 44 45 #include <ufs/ufs/dinode.h> 46 #include <ufs/ufs/dir.h> 47 #include <protocols/dumprestore.h> 48 49 #include <setjmp.h> 50 #include <glob.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 #include "restore.h" 56 #include "extern.h" 57 58 #define round(a, b) (((a) + (b) - 1) / (b) * (b)) 59 60 /* 61 * Things to handle interruptions. 62 */ 63 static int runshell; 64 static jmp_buf reset; 65 static char *nextarg = NULL; 66 67 /* 68 * Structure and routines associated with listing directories. 69 */ 70 struct afile { 71 ino_t fnum; /* inode number of file */ 72 char *fname; /* file name */ 73 short len; /* name length */ 74 char prefix; /* prefix character */ 75 char postfix; /* postfix character */ 76 }; 77 struct arglist { 78 int freeglob; /* glob structure needs to be freed */ 79 int argcnt; /* next globbed argument to return */ 80 glob_t glob; /* globbing information */ 81 char *cmd; /* the current command */ 82 }; 83 84 static char *copynext __P((char *, char *)); 85 static int fcmp __P((const void *, const void *)); 86 static void formatf __P((struct afile *, int)); 87 static void getcmd __P((char *, char *, char *, int, struct arglist *)); 88 struct dirent *glob_readdir __P((RST_DIR *dirp)); 89 static int glob_stat __P((const char *, struct stat *)); 90 static void mkentry __P((char *, struct direct *, struct afile *)); 91 static void printlist __P((char *, char *)); 92 93 /* 94 * Read and execute commands from the terminal. 95 */ 96 void 97 runcmdshell() 98 { 99 register struct entry *np; 100 ino_t ino; 101 struct arglist arglist; 102 char curdir[MAXPATHLEN]; 103 char name[MAXPATHLEN]; 104 char cmd[BUFSIZ]; 105 106 arglist.freeglob = 0; 107 arglist.argcnt = 0; 108 arglist.glob.gl_flags = GLOB_ALTDIRFUNC; 109 arglist.glob.gl_opendir = (void *)rst_opendir; 110 arglist.glob.gl_readdir = (void *)glob_readdir; 111 arglist.glob.gl_closedir = (void *)rst_closedir; 112 arglist.glob.gl_lstat = glob_stat; 113 arglist.glob.gl_stat = glob_stat; 114 canon("/", curdir, sizeof(curdir)); 115 loop: 116 if (setjmp(reset) != 0) { 117 if (arglist.freeglob != 0) { 118 arglist.freeglob = 0; 119 arglist.argcnt = 0; 120 globfree(&arglist.glob); 121 } 122 nextarg = NULL; 123 volno = 0; 124 } 125 runshell = 1; 126 getcmd(curdir, cmd, name, sizeof(name), &arglist); 127 switch (cmd[0]) { 128 /* 129 * Add elements to the extraction list. 130 */ 131 case 'a': 132 if (strncmp(cmd, "add", strlen(cmd)) != 0) 133 goto bad; 134 ino = dirlookup(name); 135 if (ino == 0) 136 break; 137 if (mflag) 138 pathcheck(name); 139 treescan(name, ino, addfile); 140 break; 141 /* 142 * Change working directory. 143 */ 144 case 'c': 145 if (strncmp(cmd, "cd", strlen(cmd)) != 0) 146 goto bad; 147 ino = dirlookup(name); 148 if (ino == 0) 149 break; 150 if (inodetype(ino) == LEAF) { 151 fprintf(stderr, "%s: not a directory\n", name); 152 break; 153 } 154 (void) strcpy(curdir, name); 155 break; 156 /* 157 * Delete elements from the extraction list. 158 */ 159 case 'd': 160 if (strncmp(cmd, "delete", strlen(cmd)) != 0) 161 goto bad; 162 np = lookupname(name); 163 if (np == NULL || (np->e_flags & NEW) == 0) { 164 fprintf(stderr, "%s: not on extraction list\n", name); 165 break; 166 } 167 treescan(name, np->e_ino, deletefile); 168 break; 169 /* 170 * Extract the requested list. 171 */ 172 case 'e': 173 if (strncmp(cmd, "extract", strlen(cmd)) != 0) 174 goto bad; 175 createfiles(); 176 createlinks(); 177 setdirmodes(0); 178 if (dflag) 179 checkrestore(); 180 volno = 0; 181 break; 182 /* 183 * List available commands. 184 */ 185 case 'h': 186 if (strncmp(cmd, "help", strlen(cmd)) != 0) 187 goto bad; 188 case '?': 189 fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", 190 "Available commands are:\n", 191 "\tls [arg] - list directory\n", 192 "\tcd arg - change directory\n", 193 "\tpwd - print current directory\n", 194 "\tadd [arg] - add `arg' to list of", 195 " files to be extracted\n", 196 "\tdelete [arg] - delete `arg' from", 197 " list of files to be extracted\n", 198 "\textract - extract requested files\n", 199 "\tsetmodes - set modes of requested directories\n", 200 "\tquit - immediately exit program\n", 201 "\twhat - list dump header information\n", 202 "\tverbose - toggle verbose flag", 203 " (useful with ``ls'')\n", 204 "\thelp or `?' - print this list\n", 205 "If no `arg' is supplied, the current", 206 " directory is used\n"); 207 break; 208 /* 209 * List a directory. 210 */ 211 case 'l': 212 if (strncmp(cmd, "ls", strlen(cmd)) != 0) 213 goto bad; 214 printlist(name, curdir); 215 break; 216 /* 217 * Print current directory. 218 */ 219 case 'p': 220 if (strncmp(cmd, "pwd", strlen(cmd)) != 0) 221 goto bad; 222 if (curdir[1] == '\0') 223 fprintf(stderr, "/\n"); 224 else 225 fprintf(stderr, "%s\n", &curdir[1]); 226 break; 227 /* 228 * Quit. 229 */ 230 case 'q': 231 if (strncmp(cmd, "quit", strlen(cmd)) != 0) 232 goto bad; 233 return; 234 case 'x': 235 if (strncmp(cmd, "xit", strlen(cmd)) != 0) 236 goto bad; 237 return; 238 /* 239 * Toggle verbose mode. 240 */ 241 case 'v': 242 if (strncmp(cmd, "verbose", strlen(cmd)) != 0) 243 goto bad; 244 if (vflag) { 245 fprintf(stderr, "verbose mode off\n"); 246 vflag = 0; 247 break; 248 } 249 fprintf(stderr, "verbose mode on\n"); 250 vflag++; 251 break; 252 /* 253 * Just restore requested directory modes. 254 */ 255 case 's': 256 if (strncmp(cmd, "setmodes", strlen(cmd)) != 0) 257 goto bad; 258 setdirmodes(FORCE); 259 break; 260 /* 261 * Print out dump header information. 262 */ 263 case 'w': 264 if (strncmp(cmd, "what", strlen(cmd)) != 0) 265 goto bad; 266 printdumpinfo(); 267 break; 268 /* 269 * Turn on debugging. 270 */ 271 case 'D': 272 if (strncmp(cmd, "Debug", strlen(cmd)) != 0) 273 goto bad; 274 if (dflag) { 275 fprintf(stderr, "debugging mode off\n"); 276 dflag = 0; 277 break; 278 } 279 fprintf(stderr, "debugging mode on\n"); 280 dflag++; 281 break; 282 /* 283 * Unknown command. 284 */ 285 default: 286 bad: 287 fprintf(stderr, "%s: unknown command; type ? for help\n", cmd); 288 break; 289 } 290 goto loop; 291 } 292 293 /* 294 * Read and parse an interactive command. 295 * The first word on the line is assigned to "cmd". If 296 * there are no arguments on the command line, then "curdir" 297 * is returned as the argument. If there are arguments 298 * on the line they are returned one at a time on each 299 * successive call to getcmd. Each argument is first assigned 300 * to "name". If it does not start with "/" the pathname in 301 * "curdir" is prepended to it. Finally "canon" is called to 302 * eliminate any embedded ".." components. 303 */ 304 static void 305 getcmd(curdir, cmd, name, size, ap) 306 char *curdir, *cmd, *name; 307 struct arglist *ap; 308 int size; 309 { 310 register char *cp; 311 static char input[BUFSIZ]; 312 char output[BUFSIZ]; 313 # define rawname input /* save space by reusing input buffer */ 314 315 /* 316 * Check to see if still processing arguments. 317 */ 318 if (ap->argcnt > 0) 319 goto retnext; 320 if (nextarg != NULL) 321 goto getnext; 322 /* 323 * Read a command line and trim off trailing white space. 324 */ 325 do { 326 fprintf(stderr, "restore > "); 327 (void) fflush(stderr); 328 if (fgets(input, BUFSIZ, terminal) == NULL) { 329 strcpy(cmd, "quit"); 330 return; 331 } 332 } while (input[0] == '\n'); 333 for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--) 334 /* trim off trailing white space and newline */; 335 *++cp = '\0'; 336 /* 337 * Copy the command into "cmd". 338 */ 339 cp = copynext(input, cmd); 340 ap->cmd = cmd; 341 /* 342 * If no argument, use curdir as the default. 343 */ 344 if (*cp == '\0') { 345 (void) strncpy(name, curdir, size); 346 name[size - 1] = '\0'; 347 return; 348 } 349 nextarg = cp; 350 /* 351 * Find the next argument. 352 */ 353 getnext: 354 cp = copynext(nextarg, rawname); 355 if (*cp == '\0') 356 nextarg = NULL; 357 else 358 nextarg = cp; 359 /* 360 * If it is an absolute pathname, canonicalize it and return it. 361 */ 362 if (rawname[0] == '/') { 363 canon(rawname, name, size); 364 } else { 365 /* 366 * For relative pathnames, prepend the current directory to 367 * it then canonicalize and return it. 368 */ 369 snprintf(output, sizeof(output), "%s/%s", curdir, rawname); 370 canon(output, name, size); 371 } 372 if (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob) < 0) 373 fprintf(stderr, "%s: out of memory\n", ap->cmd); 374 if (ap->glob.gl_pathc == 0) 375 return; 376 ap->freeglob = 1; 377 ap->argcnt = ap->glob.gl_pathc; 378 379 retnext: 380 strncpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt], size); 381 name[size - 1] = '\0'; 382 if (--ap->argcnt == 0) { 383 ap->freeglob = 0; 384 globfree(&ap->glob); 385 } 386 # undef rawname 387 } 388 389 /* 390 * Strip off the next token of the input. 391 */ 392 static char * 393 copynext(input, output) 394 char *input, *output; 395 { 396 register char *cp, *bp; 397 char quote; 398 399 for (cp = input; *cp == ' ' || *cp == '\t'; cp++) 400 /* skip to argument */; 401 bp = output; 402 while (*cp != ' ' && *cp != '\t' && *cp != '\0') { 403 /* 404 * Handle back slashes. 405 */ 406 if (*cp == '\\') { 407 if (*++cp == '\0') { 408 fprintf(stderr, 409 "command lines cannot be continued\n"); 410 continue; 411 } 412 *bp++ = *cp++; 413 continue; 414 } 415 /* 416 * The usual unquoted case. 417 */ 418 if (*cp != '\'' && *cp != '"') { 419 *bp++ = *cp++; 420 continue; 421 } 422 /* 423 * Handle single and double quotes. 424 */ 425 quote = *cp++; 426 while (*cp != quote && *cp != '\0') 427 *bp++ = *cp++ | 0200; 428 if (*cp++ == '\0') { 429 fprintf(stderr, "missing %c\n", quote); 430 cp--; 431 continue; 432 } 433 } 434 *bp = '\0'; 435 return (cp); 436 } 437 438 /* 439 * Canonicalize file names to always start with ``./'' and 440 * remove any embedded "." and ".." components. 441 */ 442 void 443 canon(rawname, canonname, len) 444 char *rawname, *canonname; 445 int len; 446 { 447 register char *cp, *np; 448 449 if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0) 450 (void) strcpy(canonname, ""); 451 else if (rawname[0] == '/') 452 (void) strcpy(canonname, "."); 453 else 454 (void) strcpy(canonname, "./"); 455 if (strlen(canonname) + strlen(rawname) >= len) { 456 fprintf(stderr, "canonname: not enough buffer space\n"); 457 done(1); 458 } 459 460 (void) strcat(canonname, rawname); 461 /* 462 * Eliminate multiple and trailing '/'s 463 */ 464 for (cp = np = canonname; *np != '\0'; cp++) { 465 *cp = *np++; 466 while (*cp == '/' && *np == '/') 467 np++; 468 } 469 *cp = '\0'; 470 if (*--cp == '/') 471 *cp = '\0'; 472 /* 473 * Eliminate extraneous "." and ".." from pathnames. 474 */ 475 for (np = canonname; *np != '\0'; ) { 476 np++; 477 cp = np; 478 while (*np != '/' && *np != '\0') 479 np++; 480 if (np - cp == 1 && *cp == '.') { 481 cp--; 482 (void) strcpy(cp, np); 483 np = cp; 484 } 485 if (np - cp == 2 && strncmp(cp, "..", 2) == 0) { 486 cp--; 487 while (cp > &canonname[1] && *--cp != '/') 488 /* find beginning of name */; 489 (void) strcpy(cp, np); 490 np = cp; 491 } 492 } 493 } 494 495 /* 496 * Do an "ls" style listing of a directory 497 */ 498 static void 499 printlist(name, basename) 500 char *name; 501 char *basename; 502 { 503 register struct afile *fp, *list, *listp; 504 register struct direct *dp; 505 struct afile single; 506 RST_DIR *dirp; 507 int entries, len, namelen; 508 char locname[MAXPATHLEN + 1]; 509 510 dp = pathsearch(name); 511 if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) || 512 (!vflag && dp->d_ino == WINO)) 513 return; 514 if ((dirp = rst_opendir(name)) == NULL) { 515 entries = 1; 516 list = &single; 517 mkentry(name, dp, list); 518 len = strlen(basename) + 1; 519 if (strlen(name) - len > single.len) { 520 freename(single.fname); 521 single.fname = savename(&name[len]); 522 single.len = strlen(single.fname); 523 } 524 } else { 525 entries = 0; 526 while ((dp = rst_readdir(dirp))) 527 entries++; 528 rst_closedir(dirp); 529 list = (struct afile *)malloc(entries * sizeof(struct afile)); 530 if (list == NULL) { 531 fprintf(stderr, "ls: out of memory\n"); 532 return; 533 } 534 if ((dirp = rst_opendir(name)) == NULL) 535 panic("directory reopen failed\n"); 536 fprintf(stderr, "%s:\n", name); 537 entries = 0; 538 listp = list; 539 (void) strncpy(locname, name, MAXPATHLEN); 540 (void) strncat(locname, "/", MAXPATHLEN); 541 namelen = strlen(locname); 542 while ((dp = rst_readdir(dirp))) { 543 if (dp == NULL) 544 break; 545 if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) 546 continue; 547 if (!vflag && (dp->d_ino == WINO || 548 strcmp(dp->d_name, ".") == 0 || 549 strcmp(dp->d_name, "..") == 0)) 550 continue; 551 locname[namelen] = '\0'; 552 if (namelen + dp->d_namlen >= MAXPATHLEN) { 553 fprintf(stderr, "%s%s: name exceeds %d char\n", 554 locname, dp->d_name, MAXPATHLEN); 555 } else { 556 (void) strncat(locname, dp->d_name, 557 (int)dp->d_namlen); 558 mkentry(locname, dp, listp++); 559 entries++; 560 } 561 } 562 rst_closedir(dirp); 563 if (entries == 0) { 564 fprintf(stderr, "\n"); 565 free(list); 566 return; 567 } 568 qsort((char *)list, entries, sizeof(struct afile), fcmp); 569 } 570 formatf(list, entries); 571 if (dirp != NULL) { 572 for (fp = listp - 1; fp >= list; fp--) 573 freename(fp->fname); 574 fprintf(stderr, "\n"); 575 free(list); 576 } 577 } 578 579 /* 580 * Read the contents of a directory. 581 */ 582 static void 583 mkentry(name, dp, fp) 584 char *name; 585 struct direct *dp; 586 register struct afile *fp; 587 { 588 char *cp; 589 struct entry *np; 590 591 fp->fnum = dp->d_ino; 592 fp->fname = savename(dp->d_name); 593 for (cp = fp->fname; *cp; cp++) 594 if (!vflag && (*cp < ' ' || *cp >= 0177)) 595 *cp = '?'; 596 fp->len = cp - fp->fname; 597 if (dflag && TSTINO(fp->fnum, dumpmap) == 0) 598 fp->prefix = '^'; 599 else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW)) 600 fp->prefix = '*'; 601 else 602 fp->prefix = ' '; 603 switch(dp->d_type) { 604 605 default: 606 fprintf(stderr, "Warning: undefined file type %d\n", 607 dp->d_type); 608 /* fall through */ 609 case DT_REG: 610 fp->postfix = ' '; 611 break; 612 613 case DT_LNK: 614 fp->postfix = '@'; 615 break; 616 617 case DT_FIFO: 618 case DT_SOCK: 619 fp->postfix = '='; 620 break; 621 622 case DT_CHR: 623 case DT_BLK: 624 fp->postfix = '#'; 625 break; 626 627 case DT_WHT: 628 fp->postfix = '%'; 629 break; 630 631 case DT_UNKNOWN: 632 case DT_DIR: 633 if (inodetype(dp->d_ino) == NODE) 634 fp->postfix = '/'; 635 else 636 fp->postfix = ' '; 637 break; 638 } 639 return; 640 } 641 642 /* 643 * Print out a pretty listing of a directory 644 */ 645 static void 646 formatf(list, nentry) 647 register struct afile *list; 648 int nentry; 649 { 650 register struct afile *fp, *endlist; 651 int width, bigino, haveprefix, havepostfix; 652 int i, j, w, precision, columns, lines; 653 654 width = 0; 655 haveprefix = 0; 656 havepostfix = 0; 657 bigino = ROOTINO; 658 endlist = &list[nentry]; 659 for (fp = &list[0]; fp < endlist; fp++) { 660 if (bigino < fp->fnum) 661 bigino = fp->fnum; 662 if (width < fp->len) 663 width = fp->len; 664 if (fp->prefix != ' ') 665 haveprefix = 1; 666 if (fp->postfix != ' ') 667 havepostfix = 1; 668 } 669 if (haveprefix) 670 width++; 671 if (havepostfix) 672 width++; 673 if (vflag) { 674 for (precision = 0, i = bigino; i > 0; i /= 10) 675 precision++; 676 width += precision + 1; 677 } 678 width++; 679 columns = 81 / width; 680 if (columns == 0) 681 columns = 1; 682 lines = (nentry + columns - 1) / columns; 683 for (i = 0; i < lines; i++) { 684 for (j = 0; j < columns; j++) { 685 fp = &list[j * lines + i]; 686 if (vflag) { 687 fprintf(stderr, "%*d ", precision, fp->fnum); 688 fp->len += precision + 1; 689 } 690 if (haveprefix) { 691 putc(fp->prefix, stderr); 692 fp->len++; 693 } 694 fprintf(stderr, "%s", fp->fname); 695 if (havepostfix) { 696 putc(fp->postfix, stderr); 697 fp->len++; 698 } 699 if (fp + lines >= endlist) { 700 fprintf(stderr, "\n"); 701 break; 702 } 703 for (w = fp->len; w < width; w++) 704 putc(' ', stderr); 705 } 706 } 707 } 708 709 /* 710 * Skip over directory entries that are not on the tape 711 * 712 * First have to get definition of a dirent. 713 */ 714 #undef DIRBLKSIZ 715 #include <dirent.h> 716 #undef d_ino 717 718 struct dirent * 719 glob_readdir(dirp) 720 RST_DIR *dirp; 721 { 722 struct direct *dp; 723 static struct dirent adirent; 724 725 while ((dp = rst_readdir(dirp)) != NULL) { 726 if (!vflag && dp->d_ino == WINO) 727 continue; 728 if (dflag || TSTINO(dp->d_ino, dumpmap)) 729 break; 730 } 731 if (dp == NULL) 732 return (NULL); 733 adirent.d_fileno = dp->d_ino; 734 adirent.d_namlen = dp->d_namlen; 735 memmove(adirent.d_name, dp->d_name, dp->d_namlen + 1); 736 return (&adirent); 737 } 738 739 /* 740 * Return st_mode information in response to stat or lstat calls 741 */ 742 static int 743 glob_stat(name, stp) 744 const char *name; 745 struct stat *stp; 746 { 747 register struct direct *dp; 748 749 dp = pathsearch(name); 750 if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) || 751 (!vflag && dp->d_ino == WINO)) 752 return (-1); 753 if (inodetype(dp->d_ino) == NODE) 754 stp->st_mode = IFDIR; 755 else 756 stp->st_mode = IFREG; 757 return (0); 758 } 759 760 /* 761 * Comparison routine for qsort. 762 */ 763 static int 764 fcmp(f1, f2) 765 register const void *f1, *f2; 766 { 767 return (strcmp(((struct afile *)f1)->fname, 768 ((struct afile *)f2)->fname)); 769 } 770 771 /* 772 * respond to interrupts 773 */ 774 void 775 onintr(signo) 776 int signo; 777 { 778 if (command == 'i' && runshell) 779 longjmp(reset, 1); 780 if (reply("restore interrupted, continue") == FAIL) 781 done(1); 782 } 783