/* $OpenBSD: options.c,v 1.12 1996/12/09 12:02:16 deraadt Exp $ */ /* $NetBSD: options.c,v 1.6 1996/03/26 23:54:18 mrg Exp $ */ /*- * Copyright (c) 1992 Keith Muller. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Keith Muller of the University of California, San Diego. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint #if 0 static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94"; #else static char rcsid[] = "$OpenBSD: options.c,v 1.12 1996/12/09 12:02:16 deraadt Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include "pax.h" #include "options.h" #include "cpio.h" #include "tar.h" #include "extern.h" /* * Routines which handle command line options */ static char flgch[] = FLGCH; /* list of all possible flags */ static OPLIST *ophead = NULL; /* head for format specific options -x */ static OPLIST *optail = NULL; /* option tail */ static int no_op __P((void)); static void printflg __P((unsigned int)); static int c_frmt __P((const void *, const void *)); static off_t str_offt __P((char *)); static void pax_options __P((register int, register char **)); static void pax_usage __P((void)); static void tar_options __P((register int, register char **)); static void tar_usage __P((void)); #ifdef notdef static void cpio_options __P((register int, register char **)); static void cpio_usage __P((void)); #endif #define GZIP_CMD "gzip" /* command to run as gzip */ #define COMPRESS_CMD "compress" /* command to run as compress */ /* * Format specific routine table - MUST BE IN SORTED ORDER BY NAME * (see pax.h for description of each function) * * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, * read, end_read, st_write, write, end_write, trail, * rd_data, wr_data, options */ FSUB fsub[] = { /* 0: OLD BINARY CPIO */ {"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail, rd_wrfile, wr_rdfile, bad_opt}, /* 1: OLD OCTAL CHARACTER CPIO */ {"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail, rd_wrfile, wr_rdfile, bad_opt}, /* 2: SVR4 HEX CPIO */ {"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail, rd_wrfile, wr_rdfile, bad_opt}, /* 3: SVR4 HEX CPIO WITH CRC */ {"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail, rd_wrfile, wr_rdfile, bad_opt}, /* 4: OLD TAR */ {"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail, rd_wrfile, wr_rdfile, tar_opt}, /* 5: POSIX USTAR */ {"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail, rd_wrfile, wr_rdfile, bad_opt}, }; #define F_TAR 5 /* format when called as tar */ #define DEFLT 5 /* default write format from list above */ /* * ford is the archive search order used by get_arc() to determine what kind * of archive we are dealing with. This helps to properly id archive formats * some formats may be subsets of others.... */ int ford[] = {5, 4, 3, 2, 1, 0, -1 }; /* * options() * figure out if we are pax, tar or cpio. Call the appropriate options * parser */ #if __STDC__ void options(register int argc, register char **argv) #else void options(argc, argv) register int argc; register char **argv; #endif { /* * Are we acting like pax, tar or cpio (based on argv[0]) */ if ((argv0 = strrchr(argv[0], '/')) != NULL) argv0++; else argv0 = argv[0]; if (strcmp(NM_TAR, argv0) == 0) return(tar_options(argc, argv)); # ifdef notdef else if (strcmp(NM_CPIO, argv0) == 0) return(cpio_options(argc, argv)); # endif /* * assume pax as the default */ argv0 = NM_PAX; return(pax_options(argc, argv)); } /* * pax_options() * look at the user specified flags. set globals as required and check if * the user specified a legal set of flags. If not, complain and exit */ #if __STDC__ static void pax_options(register int argc, register char **argv) #else static void pax_options(argc, argv) register int argc; register char **argv; #endif { register int c; register int i; unsigned int flg = 0; unsigned int bflg = 0; register char *pt; FSUB tmp; extern char *optarg; extern int optind; /* * process option flags */ while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLPT:U:XYZ")) != EOF) { switch (c) { case 'a': /* * append */ flg |= AF; break; case 'b': /* * specify blocksize */ flg |= BF; if ((wrblksz = (int)str_offt(optarg)) <= 0) { paxwarn(1, "Invalid block size %s", optarg); pax_usage(); } break; case 'c': /* * inverse match on patterns */ cflag = 1; flg |= CF; break; case 'd': /* * match only dir on extract, not the subtree at dir */ dflag = 1; flg |= DF; break; case 'f': /* * filename where the archive is stored */ arcname = optarg; flg |= FF; break; case 'i': /* * interactive file rename */ iflag = 1; flg |= IF; break; case 'k': /* * do not clobber files that exist */ kflag = 1; flg |= KF; break; case 'l': /* * try to link src to dest with copy (-rw) */ lflag = 1; flg |= LF; break; case 'n': /* * select first match for a pattern only */ nflag = 1; flg |= NF; break; case 'o': /* * pass format specific options */ flg |= OF; if (opt_add(optarg) < 0) pax_usage(); break; case 'p': /* * specify file characteristic options */ for (pt = optarg; *pt != '\0'; ++pt) { switch(*pt) { case 'a': /* * do not preserve access time */ patime = 0; break; case 'e': /* * preserve user id, group id, file * mode, access/modification times */ pids = 1; pmode = 1; patime = 1; pmtime = 1; break; case 'm': /* * do not preserve modification time */ pmtime = 0; break; case 'o': /* * preserve uid/gid */ pids = 1; break; case 'p': /* * preserver file mode bits */ pmode = 1; break; default: paxwarn(1, "Invalid -p string: %c", *pt); pax_usage(); break; } } flg |= PF; break; case 'r': /* * read the archive */ flg |= RF; break; case 's': /* * file name substitution name pattern */ if (rep_add(optarg) < 0) { pax_usage(); break; } flg |= SF; break; case 't': /* * preserve access time on filesystem nodes we read */ tflag = 1; flg |= TF; break; case 'u': /* * ignore those older files */ uflag = 1; flg |= UF; break; case 'v': /* * verbose operation mode */ vflag = 1; flg |= VF; break; case 'w': /* * write an archive */ flg |= WF; break; case 'x': /* * specify an archive format on write */ tmp.name = optarg; if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) { flg |= XF; break; } paxwarn(1, "Unknown -x format: %s", optarg); (void)fputs("pax: Known -x formats are:", stderr); for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) (void)fprintf(stderr, " %s", fsub[i].name); (void)fputs("\n\n", stderr); pax_usage(); break; case 'z': /* * use gzip. Non standard option. */ zflag = 1; gzip_program = GZIP_CMD; break; case 'B': /* * non-standard option on number of bytes written on a * single archive volume. */ if ((wrlimit = str_offt(optarg)) <= 0) { paxwarn(1, "Invalid write limit %s", optarg); pax_usage(); } if (wrlimit % BLKMULT) { paxwarn(1, "Write limit is not a %d byte multiple", BLKMULT); pax_usage(); } flg |= CBF; break; case 'D': /* * On extraction check file inode change time before the * modification of the file name. Non standard option. */ Dflag = 1; flg |= CDF; break; case 'E': /* * non-standard limit on read faults * 0 indicates stop after first error, values * indicate a limit, "NONE" try forever */ flg |= CEF; if (strcmp(NONE, optarg) == 0) maxflt = -1; else if ((maxflt = atoi(optarg)) < 0) { paxwarn(1, "Error count value must be positive"); pax_usage(); } break; case 'G': /* * non-standard option for selecting files within an * archive by group (gid or name) */ if (grp_add(optarg) < 0) { pax_usage(); break; } flg |= CGF; break; case 'H': /* * follow command line symlinks only */ Hflag = 1; flg |= CHF; break; case 'L': /* * follow symlinks */ Lflag = 1; flg |= CLF; break; case 'P': /* * do NOT follow symlinks (default) */ Lflag = 0; flg |= CPF; break; case 'T': /* * non-standard option for selecting files within an * archive by modification time range (lower,upper) */ if (trng_add(optarg) < 0) { pax_usage(); break; } flg |= CTF; break; case 'U': /* * non-standard option for selecting files within an * archive by user (uid or name) */ if (usr_add(optarg) < 0) { pax_usage(); break; } flg |= CUF; break; case 'X': /* * do not pass over mount points in the file system */ Xflag = 1; flg |= CXF; break; case 'Y': /* * On extraction check file inode change time after the * modification of the file name. Non standard option. */ Yflag = 1; flg |= CYF; break; case 'Z': /* * On extraction check modification time after the * modification of the file name. Non standard option. */ Zflag = 1; flg |= CZF; break; default: pax_usage(); break; } } /* * figure out the operation mode of pax read,write,extract,copy,append * or list. check that we have not been given a bogus set of flags * for the operation mode. */ if (ISLIST(flg)) { act = LIST; bflg = flg & BDLIST; } else if (ISEXTRACT(flg)) { act = EXTRACT; bflg = flg & BDEXTR; } else if (ISARCHIVE(flg)) { act = ARCHIVE; bflg = flg & BDARCH; } else if (ISAPPND(flg)) { act = APPND; bflg = flg & BDARCH; } else if (ISCOPY(flg)) { act = COPY; bflg = flg & BDCOPY; } else pax_usage(); if (bflg) { printflg(flg); pax_usage(); } /* * if we are writing (ARCHIVE) we use the default format if the user * did not specify a format. when we write during an APPEND, we will * adopt the format of the existing archive if none was supplied. */ if (!(flg & XF) && (act == ARCHIVE)) frmt = &(fsub[DEFLT]); /* * process the args as they are interpreted by the operation mode */ switch (act) { case LIST: case EXTRACT: for (; optind < argc; optind++) if (pat_add(argv[optind], NULL) < 0) pax_usage(); break; case COPY: if (optind >= argc) { paxwarn(0, "Destination directory was not supplied"); pax_usage(); } --argc; dirptr = argv[argc]; /* FALL THROUGH */ case ARCHIVE: case APPND: for (; optind < argc; optind++) if (ftree_add(argv[optind], 0) < 0) pax_usage(); /* * no read errors allowed on updates/append operation! */ maxflt = 0; break; } } /* * tar_options() * look at the user specified flags. set globals as required and check if * the user specified a legal set of flags. If not, complain and exit */ #if __STDC__ static void tar_options(register int argc, register char **argv) #else static void tar_options(argc, argv) register int argc; register char **argv; #endif { register int c; int fstdin = 0; char *chdnam = (char *)NULL; /* * process option flags */ while ((c = getoldopt(argc, argv, "b:cef:hmopruts:vwxzBC:HLPXZ014578")) != EOF) { switch(c) { case 'b': /* * specify blocksize */ if ((wrblksz = (int)str_offt(optarg)) <= 0) { paxwarn(1, "Invalid block size %s", optarg); tar_usage(); } break; case 'c': /* * create an archive */ act = ARCHIVE; break; case 'e': /* * stop after first error */ maxflt = 0; break; case 'f': /* * filename where the archive is stored */ if ((optarg[0] == '-') && (optarg[1]== '\0')) { /* * treat a - as stdin */ fstdin = 1; arcname = (char *)0; break; } fstdin = 0; arcname = optarg; break; case 'h': /* * follow symlinks */ Lflag = 1; break; case 'm': /* * do not preserve modification time */ pmtime = 0; break; case 'o': if (opt_add("write_opt=nodir") < 0) tar_usage(); break; case 'p': /* * preserve user id, group id, file * mode, access/modification times */ pids = 1; pmode = 1; patime = 1; pmtime = 1; break; case 'r': case 'u': /* * append to the archive */ act = APPND; break; case 's': /* * file name substitution name pattern */ if (rep_add(optarg) < 0) { tar_usage(); break; } break; case 't': /* * list contents of the tape */ act = LIST; break; case 'v': /* * verbose operation mode */ vflag = 1; break; case 'w': /* * interactive file rename */ iflag = 1; break; case 'x': /* * write an archive */ act = EXTRACT; break; case 'z': /* * use gzip. Non standard option. */ zflag = 1; gzip_program = GZIP_CMD; break; case 'B': /* * Nothing to do here, this is pax default */ break; case 'C': chdnam = optarg; break; case 'H': /* * follow command line symlinks only */ Hflag = 1; break; case 'L': /* * follow symlinks */ Lflag = 1; break; case 'P': /* * do not follow symlinks */ Lflag = 0; break; case 'X': /* * do not pass over mount points in the file system */ Xflag = 1; break; case 'Z': /* * use compress. */ zflag = 1; gzip_program = COMPRESS_CMD; break; case '0': arcname = DEV_0; break; case '1': arcname = DEV_1; break; case '4': arcname = DEV_4; break; case '5': arcname = DEV_5; break; case '7': arcname = DEV_7; break; case '8': arcname = DEV_8; break; default: tar_usage(); break; } } argc -= optind; argv += optind; /* * if we are writing (ARCHIVE) specify tar, otherwise run like pax */ if (act == ARCHIVE) frmt = &(fsub[F_TAR]); /* * process the args as they are interpreted by the operation mode */ switch (act) { case LIST: case EXTRACT: default: { int sawpat = 0; while (*argv != (char *)NULL) { if (!strcmp(*argv, "-C")) { if(*++argv == (char *)NULL) break; chdnam = *argv++; continue; } if (pat_add(*argv++, chdnam) < 0) tar_usage(); sawpat++; } /* * If there were no patterns, but there was a chdir, * we do it now. */ if ((sawpat == 0) && (chdnam != (char *)NULL)) { if (chdir(chdnam) < 0) { syswarn(0, errno, "Can't chdir to %s", chdnam); exit(exit_val); } } } break; case ARCHIVE: case APPND: if (chdnam != (char *)NULL) { /* initial chdir() */ if (ftree_add(chdnam, 1) < 0) tar_usage(); } while (*argv != (char *)NULL) { if (!strcmp(*argv, "-C")) { if (*++argv == (char *)NULL) break; if (ftree_add(*argv++, 1) < 0) tar_usage(); } else { if (ftree_add(*argv++, 0) < 0) tar_usage(); } } /* * no read errors allowed on updates/append operation! */ maxflt = 0; break; } if (!fstdin && ((arcname == (char *)NULL) || (*arcname == '\0'))) { arcname = getenv("TAPE"); if ((arcname == (char *)NULL) || (*arcname == '\0')) arcname = DEV_8; } } #ifdef notdef /* * cpio_options() * look at the user specified flags. set globals as required and check if * the user specified a legal set of flags. If not, complain and exit */ #if __STDC__ static void cpio_options(register int argc, register char **argv) #else static void cpio_options(argc, argv) register int argc; register char **argv; #endif { } #endif /* * printflg() * print out those invalid flag sets found to the user */ #if __STDC__ static void printflg(unsigned int flg) #else static void printflg(flg) unsigned int flg; #endif { int nxt; int pos = 0; (void)fprintf(stderr,"%s: Invalid combination of options:", argv0); while ((nxt = ffs(flg)) != 0) { flg = flg >> nxt; pos += nxt; (void)fprintf(stderr, " -%c", flgch[pos-1]); } (void)putc('\n', stderr); } /* * c_frmt() * comparison routine used by bsearch to find the format specified * by the user */ #if __STDC__ static int c_frmt(const void *a, const void *b) #else static int c_frmt(a, b) void *a; void *b; #endif { return(strcmp(((FSUB *)a)->name, ((FSUB *)b)->name)); } /* * opt_next() * called by format specific options routines to get each format specific * flag and value specified with -o * Return: * pointer to next OPLIST entry or NULL (end of list). */ #if __STDC__ OPLIST * opt_next(void) #else OPLIST * opt_next() #endif { OPLIST *opt; if ((opt = ophead) != NULL) ophead = ophead->fow; return(opt); } /* * bad_opt() * generic routine used to complain about a format specific options * when the format does not support options. */ #if __STDC__ int bad_opt(void) #else int bad_opt() #endif { register OPLIST *opt; if (ophead == NULL) return(0); /* * print all we were given */ paxwarn(1,"These format options are not supported"); while ((opt = opt_next()) != NULL) (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); pax_usage(); return(0); } /* * opt_add() * breaks the value supplied to -o into a option name and value. options * are given to -o in the form -o name-value,name=value * mulltiple -o may be specified. * Return: * 0 if format in name=value format, -1 if -o is passed junk */ #if __STDC__ int opt_add(register char *str) #else int opt_add(str) register char *str; #endif { register OPLIST *opt; register char *frpt; register char *pt; register char *endpt; if ((str == NULL) || (*str == '\0')) { paxwarn(0, "Invalid option name"); return(-1); } frpt = endpt = str; /* * break into name and values pieces and stuff each one into a * OPLIST structure. When we know the format, the format specific * option function will go through this list */ while ((frpt != NULL) && (*frpt != '\0')) { if ((endpt = strchr(frpt, ',')) != NULL) *endpt = '\0'; if ((pt = strchr(frpt, '=')) == NULL) { paxwarn(0, "Invalid options format"); return(-1); } if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { paxwarn(0, "Unable to allocate space for option list"); return(-1); } *pt++ = '\0'; opt->name = frpt; opt->value = pt; opt->fow = NULL; if (endpt != NULL) frpt = endpt + 1; else frpt = NULL; if (ophead == NULL) { optail = ophead = opt; continue; } optail->fow = opt; optail = opt; } return(0); } /* * str_offt() * Convert an expression of the following forms to an off_t > 0. * 1) A positive decimal number. * 2) A positive decimal number followed by a b (mult by 512). * 3) A positive decimal number followed by a k (mult by 1024). * 4) A positive decimal number followed by a m (mult by 512). * 5) A positive decimal number followed by a w (mult by sizeof int) * 6) Two or more positive decimal numbers (with/without k,b or w). * seperated by x (also * for backwards compatibility), specifying * the product of the indicated values. * Return: * 0 for an error, a positive value o.w. */ #if __STDC__ static off_t str_offt(char *val) #else static off_t str_offt(val) char *val; #endif { char *expr; off_t num, t; # ifdef NET2_STAT num = strtol(val, &expr, 0); if ((num == LONG_MAX) || (num <= 0) || (expr == val)) # else num = strtoq(val, &expr, 0); if ((num == QUAD_MAX) || (num <= 0) || (expr == val)) # endif return(0); switch(*expr) { case 'b': t = num; num *= 512; if (t > num) return(0); ++expr; break; case 'k': t = num; num *= 1024; if (t > num) return(0); ++expr; break; case 'm': t = num; num *= 1048576; if (t > num) return(0); ++expr; break; case 'w': t = num; num *= sizeof(int); if (t > num) return(0); ++expr; break; } switch(*expr) { case '\0': break; case '*': case 'x': t = num; num *= str_offt(expr + 1); if (t > num) return(0); break; default: return(0); } return(num); } /* * no_op() * for those option functions where the archive format has nothing to do. * Return: * 0 */ #if __STDC__ static int no_op(void) #else static int no_op() #endif { return(0); } /* * pax_usage() * print the usage summary to the user */ #if __STDC__ void pax_usage(void) #else void pax_usage() #endif { (void)fputs("usage: pax [-cdnv] [-E limit] [-f archive] ", stderr); (void)fputs("[-s replstr] ... [-U user] ...", stderr); (void)fputs("\n [-G group] ... ", stderr); (void)fputs("[-T [from_date][,to_date]] ... ", stderr); (void)fputs("[pattern ...]\n", stderr); (void)fputs(" pax -r [-cdiknuvDYZ] [-E limit] ", stderr); (void)fputs("[-f archive] [-o options] ... \n", stderr); (void)fputs(" [-p string] ... [-s replstr] ... ", stderr); (void)fputs("[-U user] ... [-G group] ...\n ", stderr); (void)fputs("[-T [from_date][,to_date]] ... ", stderr); (void)fputs(" [pattern ...]\n", stderr); (void)fputs(" pax -w [-dituvHLPX] [-b blocksize] ", stderr); (void)fputs("[ [-a] [-f archive] ] [-x format] \n", stderr); (void)fputs(" [-B bytes] [-s replstr] ... ", stderr); (void)fputs("[-o options] ... [-U user] ...", stderr); (void)fputs("\n [-G group] ... ", stderr); (void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr); (void)fputs("[file ...]\n", stderr); (void)fputs(" pax -r -w [-diklntuvDHLPXYZ] ", stderr); (void)fputs("[-p string] ... [-s replstr] ...", stderr); (void)fputs("\n [-U user] ... [-G group] ... ", stderr); (void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr); (void)fputs("\n [file ...] directory\n", stderr); exit(1); } /* * tar_usage() * print the usage summary to the user */ #if __STDC__ void tar_usage(void) #else void tar_usage() #endif { (void)fputs("usage: tar -{txru}[cevfbmopswzBHLPXZ014578] [tapefile] ", stderr); (void)fputs("[blocksize] [replstr] [-C directory] file1 file2...\n", stderr); exit(1); } #ifdef notdef /* * cpio_usage() * print the usage summary to the user */ #if __STDC__ void cpio_usage(void) #else void cpio_usage() #endif { exit(1); } #endif