/* Tar -- a tape archiver. Copyright (C) 1988, 1992, 1993 Free Software Foundation This file is part of GNU Tar. GNU Tar is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Tar is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Tar; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef lint static char rcsid[] = "$Id: tar.c,v 1.1 1995/10/18 08:41:10 deraadt Exp $"; #endif /* not lint */ /* * A tar (tape archiver) program. * * Written by John Gilmore, ihnp4!hoptoad!gnu, starting 25 Aug 85. */ #include #include /* Needed for typedefs in tar.h */ #include "getopt.h" /* * The following causes "tar.h" to produce definitions of all the * global variables, rather than just "extern" declarations of them. */ #define TAR_EXTERN /**/ #include "tar.h" #include "port.h" #include "regex.h" #include "fnmatch.h" /* * We should use a conversion routine that does reasonable error * checking -- atoi doesn't. For now, punt. FIXME. */ #define intconv atoi PTR ck_malloc (); PTR ck_realloc (); extern int getoldopt (); extern void read_and (); extern void list_archive (); extern void extract_archive (); extern void diff_archive (); extern void create_archive (); extern void update_archive (); extern void junk_archive (); extern void init_volume_number (); extern void closeout_volume_number (); /* JF */ extern time_t get_date (); time_t new_time; static FILE *namef; /* File to read names from */ static char **n_argv; /* Argv used by name routines */ static int n_argc; /* Argc used by name routines */ static char **n_ind; /* Store an array of names */ static int n_indalloc; /* How big is the array? */ static int n_indused; /* How many entries does it have? */ static int n_indscan; /* How many of the entries have we scanned? */ extern FILE *msg_file; int check_exclude (); void add_exclude (); void add_exclude_file (); void addname (); void describe (); void diff_init (); void extr_init (); int is_regex (); void name_add (); void name_init (); void options (); char *un_quote_string (); #ifndef S_ISLNK #define lstat stat #endif #ifndef DEFBLOCKING #define DEFBLOCKING 20 #endif #ifndef DEF_AR_FILE #define DEF_AR_FILE "tar.out" #endif /* For long options that unconditionally set a single flag, we have getopt do it. For the others, we share the code for the equivalent short named option, the name of which is stored in the otherwise-unused `val' field of the `struct option'; for long options that have no equivalent short option, we use nongraphic characters as pseudo short option characters, starting (for no particular reason) with character 10. */ struct option long_options[] = { {"create", 0, 0, 'c'}, {"append", 0, 0, 'r'}, {"extract", 0, 0, 'x'}, {"get", 0, 0, 'x'}, {"list", 0, 0, 't'}, {"update", 0, 0, 'u'}, {"catenate", 0, 0, 'A'}, {"concatenate", 0, 0, 'A'}, {"compare", 0, 0, 'd'}, {"diff", 0, 0, 'd'}, {"delete", 0, 0, 14}, {"help", 0, 0, 12}, {"null", 0, 0, 16}, {"directory", 1, 0, 'C'}, {"record-number", 0, &f_sayblock, 1}, {"files-from", 1, 0, 'T'}, {"label", 1, 0, 'V'}, {"exclude-from", 1, 0, 'X'}, {"exclude", 1, 0, 15}, {"file", 1, 0, 'f'}, {"block-size", 1, 0, 'b'}, {"version", 0, 0, 11}, {"verbose", 0, 0, 'v'}, {"totals", 0, &f_totals, 1}, {"read-full-blocks", 0, &f_reblock, 1}, {"starting-file", 1, 0, 'K'}, {"to-stdout", 0, &f_exstdout, 1}, {"ignore-zeros", 0, &f_ignorez, 1}, {"keep-old-files", 0, 0, 'k'}, {"same-permissions", 0, &f_use_protection, 1}, {"preserve-permissions", 0, &f_use_protection, 1}, {"modification-time", 0, &f_modified, 1}, {"preserve", 0, 0, 10}, {"same-order", 0, &f_sorted_names, 1}, {"same-owner", 0, &f_do_chown, 1}, {"preserve-order", 0, &f_sorted_names, 1}, {"newer", 1, 0, 'N'}, {"after-date", 1, 0, 'N'}, {"newer-mtime", 1, 0, 13}, {"incremental", 0, 0, 'G'}, {"listed-incremental", 1, 0, 'g'}, {"multi-volume", 0, &f_multivol, 1}, {"info-script", 1, 0, 'F'}, {"new-volume-script", 1, 0, 'F'}, {"absolute-paths", 0, &f_absolute_paths, 1}, {"interactive", 0, &f_confirm, 1}, {"confirmation", 0, &f_confirm, 1}, {"verify", 0, &f_verify, 1}, {"dereference", 0, &f_follow_links, 1}, {"one-file-system", 0, &f_local_filesys, 1}, {"old-archive", 0, 0, 'o'}, {"portability", 0, 0, 'o'}, {"compress", 0, 0, 'Z'}, {"uncompress", 0, 0, 'Z'}, {"block-compress", 0, &f_compress_block, 1}, {"gzip", 0, 0, 'z'}, {"ungzip", 0, 0, 'z'}, {"use-compress-program", 1, 0, 18}, {"same-permissions", 0, &f_use_protection, 1}, {"sparse", 0, &f_sparse_files, 1}, {"tape-length", 1, 0, 'L'}, {"remove-files", 0, &f_remove_files, 1}, {"ignore-failed-read", 0, &f_ignore_failed_read, 1}, {"checkpoint", 0, &f_checkpoint, 1}, {"show-omitted-dirs", 0, &f_show_omitted_dirs, 1}, {"volno-file", 1, 0, 17}, {"force-local", 0, &f_force_local, 1}, {"atime-preserve", 0, &f_atime_preserve, 1}, {"norecurse", 0, &f_norecurse, 1}, {"unlink", 0, &f_unlink, 1}, {0, 0, 0, 0} }; /* * Main routine for tar. */ void main (argc, argv) int argc; char **argv; { extern char version_string[]; tar = argv[0]; /* JF: was "tar" Set program name */ filename_terminator = '\n'; errors = 0; options (argc, argv); if (!n_argv) name_init (argc, argv); if (f_volno_file) init_volume_number (); switch (cmd_mode) { case CMD_CAT: case CMD_UPDATE: case CMD_APPEND: update_archive (); break; case CMD_DELETE: junk_archive (); break; case CMD_CREATE: create_archive (); if (f_totals) fprintf (stderr, "Total bytes written: %d\n", tot_written); break; case CMD_EXTRACT: if (f_volhdr) { const char *err; label_pattern = (struct re_pattern_buffer *) ck_malloc (sizeof *label_pattern); err = re_compile_pattern (f_volhdr, strlen (f_volhdr), label_pattern); if (err) { fprintf (stderr, "Bad regular expression: %s\n", err); errors++; break; } } extr_init (); read_and (extract_archive); break; case CMD_LIST: if (f_volhdr) { const char *err; label_pattern = (struct re_pattern_buffer *) ck_malloc (sizeof *label_pattern); err = re_compile_pattern (f_volhdr, strlen (f_volhdr), label_pattern); if (err) { fprintf (stderr, "Bad regular expression: %s\n", err); errors++; break; } } read_and (list_archive); #if 0 if (!errors) errors = different; #endif break; case CMD_DIFF: diff_init (); read_and (diff_archive); break; case CMD_VERSION: fprintf (stderr, "%s\n", version_string); break; case CMD_NONE: msg ("you must specify exactly one of the r, c, t, x, or d options\n"); fprintf (stderr, "For more information, type ``%s --help''.\n", tar); exit (EX_ARGSBAD); } if (f_volno_file) closeout_volume_number (); exit (errors); /* NOTREACHED */ } /* * Parse the options for tar. */ void options (argc, argv) int argc; char **argv; { register int c; /* Option letter */ int ind = -1; /* Set default option values */ blocking = DEFBLOCKING; /* From Makefile */ ar_files = (char **) ck_malloc (sizeof (char *) * 10); ar_files_len = 10; n_ar_files = 0; cur_ar_file = 0; /* Parse options */ while ((c = getoldopt (argc, argv, "-01234567Ab:BcC:df:F:g:GhikK:lL:mMN:oOpPrRsStT:uvV:wWxX:zZ", long_options, &ind)) != EOF) { switch (c) { case 0: /* long options that set a single flag */ break; case 1: /* File name or non-parsed option */ name_add (optarg); break; case 'C': name_add ("-C"); name_add (optarg); break; case 10: /* preserve */ f_use_protection = f_sorted_names = 1; break; case 11: if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_VERSION; break; case 12: /* help */ printf ("This is GNU tar, the tape archiving program.\n"); describe (); exit (1); case 13: f_new_files++; goto get_newer; case 14: /* Delete in the archive */ if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_DELETE; break; case 15: f_exclude++; add_exclude (optarg); break; case 16: /* -T reads null terminated filenames. */ filename_terminator = '\0'; break; case 17: f_volno_file = optarg; break; case 18: if (f_compressprog) { msg ("Only one compression option permitted\n"); exit (EX_ARGSBAD); } f_compressprog = optarg; break; case 'g': /* We are making a GNU dump; save directories at the beginning of the archive, and include in each directory its contents */ if (f_oldarch) goto badopt; f_gnudump++; gnu_dumpfile = optarg; break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': { /* JF this'll have to be modified for other systems, of course! */ int d, add; static char buf[50]; d = getoldopt (argc, argv, "lmh"); #ifdef MAYBEDEF sprintf (buf, "/dev/rmt/%d%c", c, d); #else #ifndef LOW_NUM #define LOW_NUM 0 #define MID_NUM 8 #define HGH_NUM 16 #endif if (d == 'l') add = LOW_NUM; else if (d == 'm') add = MID_NUM; else if (d == 'h') add = HGH_NUM; else goto badopt; sprintf (buf, "/dev/rmt%d", add + c - '0'); #endif if (n_ar_files == ar_files_len) ar_files = (char **) ck_malloc (sizeof (char *) * (ar_files_len *= 2)); ar_files[n_ar_files++] = buf; } break; case 'A': /* Arguments are tar files, just cat them onto the end of the archive. */ if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_CAT; break; case 'b': /* Set blocking factor */ blocking = intconv (optarg); break; case 'B': /* Try to reblock input */ f_reblock++; /* For reading 4.2BSD pipes */ break; case 'c': /* Create an archive */ if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_CREATE; break; #if 0 case 'C': if (chdir (optarg) < 0) msg_perror ("Can't change directory to %d", optarg); break; #endif case 'd': /* Find difference tape/disk */ if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_DIFF; break; case 'f': /* Use ar_file for the archive */ if (n_ar_files == ar_files_len) ar_files = (char **) ck_malloc (sizeof (char *) * (ar_files_len *= 2)); ar_files[n_ar_files++] = optarg; break; case 'F': /* Since -F is only useful with -M , make it implied */ f_run_script_at_end++;/* run this script at the end */ info_script = optarg; /* of each tape */ f_multivol++; break; case 'G': /* We are making a GNU dump; save directories at the beginning of the archive, and include in each directory its contents */ if (f_oldarch) goto badopt; f_gnudump++; gnu_dumpfile = 0; break; case 'h': f_follow_links++; /* follow symbolic links */ break; case 'i': f_ignorez++; /* Ignore zero records (eofs) */ /* * This can't be the default, because Unix tar * writes two records of zeros, then pads out the * block with garbage. */ break; case 'k': /* Don't overwrite files */ #ifdef NO_OPEN3 msg ("can't keep old files on this system"); exit (EX_ARGSBAD); #else f_keep++; #endif break; case 'K': f_startfile++; addname (optarg); break; case 'l': /* When dumping directories, don't dump files/subdirectories that are on other filesystems. */ f_local_filesys++; break; case 'L': tape_length = intconv (optarg); f_multivol++; break; case 'm': f_modified++; break; case 'M': /* Make Multivolume archive: When we can't write any more into the archive, re-open it, and continue writing */ f_multivol++; break; case 'N': /* Only write files newer than X */ get_newer: f_new_files++; new_time = get_date (optarg, (PTR) 0); if (new_time == (time_t) - 1) { msg ("invalid date format `%s'", optarg); exit (EX_ARGSBAD); } break; case 'o': /* Generate old archive */ if (f_gnudump /* || f_dironly */ ) goto badopt; f_oldarch++; break; case 'O': f_exstdout++; break; case 'p': f_use_protection++; break; case 'P': f_absolute_paths++; break; case 'r': /* Append files to the archive */ if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_APPEND; break; case 'R': f_sayblock++; /* Print block #s for debug */ break; /* of bad tar archives */ case 's': f_sorted_names++; /* Names to extr are sorted */ break; case 'S': /* deal with sparse files */ f_sparse_files++; break; case 't': if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_LIST; f_verbose++; /* "t" output == "cv" or "xv" */ break; case 'T': name_file = optarg; f_namefile++; break; case 'u': /* Append files to the archive that aren't there, or are newer than the copy in the archive */ if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_UPDATE; break; case 'v': f_verbose++; break; case 'V': f_volhdr = optarg; break; case 'w': f_confirm++; break; case 'W': f_verify++; break; case 'x': /* Extract files from the archive */ if (cmd_mode != CMD_NONE) goto badopt; cmd_mode = CMD_EXTRACT; break; case 'X': f_exclude++; add_exclude_file (optarg); break; case 'z': if (f_compressprog) { msg ("Only one compression option permitted\n"); exit (EX_ARGSBAD); } f_compressprog = "gzip"; break; case 'Z': if (f_compressprog) { msg ("Only one compression option permitted\n"); exit (EX_ARGSBAD); } f_compressprog = "compress"; break; case '?': badopt: msg ("Unknown option. Use '%s --help' for a complete list of options.", tar); exit (EX_ARGSBAD); } } blocksize = blocking * RECORDSIZE; if (n_ar_files == 0) { n_ar_files = 1; ar_files[0] = getenv ("TAPE"); /* From environment, or */ if (ar_files[0] == 0) ar_files[0] = DEF_AR_FILE; /* From Makefile */ } if (n_ar_files > 1 && !f_multivol) { msg ("Multiple archive files requires --multi-volume\n"); exit (EX_ARGSBAD); } if (f_compress_block && !f_compressprog) { msg ("You must use a compression option (--gzip, --compress\n\ or --use-compress-program) with --block-compress.\n"); exit (EX_ARGSBAD); } } /* * Print as much help as the user's gonna get. * * We have to sprinkle in the KLUDGE lines because too many compilers * cannot handle character strings longer than about 512 bytes. Yuk! * In particular, MS-DOS and Xenix MSC and PDP-11 V7 Unix have this * problem. */ void describe () { puts ("choose one of the following:"); fputs ("\ -A, --catenate,\n\ --concatenate append tar files to an archive\n\ -c, --create create a new archive\n\ -d, --diff,\n\ --compare find differences between archive and file system\n\ --delete delete from the archive (not for use on mag tapes!)\n\ -r, --append append files to the end of an archive\n\ -t, --list list the contents of an archive\n\ -u, --update only append files that are newer than copy in archive\n\ -x, --extract,\n\ --get extract files from an archive\n", stdout); fprintf (stdout, "\ Other options:\n\ --atime-preserve don't change access times on dumped files\n\ -b, --block-size N block size of Nx512 bytes (default N=%d)\n", DEFBLOCKING); fputs ("\ -B, --read-full-blocks reblock as we read (for reading 4.2BSD pipes)\n\ -C, --directory DIR change to directory DIR\n\ --checkpoint print directory names while reading the archive\n\ ", stdout); /* KLUDGE */ fprintf (stdout, "\ -f, --file [HOSTNAME:]F use archive file or device F (default %s)\n", DEF_AR_FILE); fputs ("\ --force-local archive file is local even if has a colon\n\ -F, --info-script F\n\ --new-volume-script F run script at end of each tape (implies -M)\n\ -G, --incremental create/list/extract old GNU-format incremental backup\n\ -g, --listed-incremental F create/list/extract new GNU-format incremental backup\n\ -h, --dereference don't dump symlinks; dump the files they point to\n\ -i, --ignore-zeros ignore blocks of zeros in archive (normally mean EOF)\n\ --ignore-failed-read don't exit with non-zero status on unreadable files\n\ -k, --keep-old-files keep existing files; don't overwrite them from archive\n\ -K, --starting-file F begin at file F in the archive\n\ -l, --one-file-system stay in local file system when creating an archive\n\ -L, --tape-length N change tapes after writing N*1024 bytes\n\ ", stdout); /* KLUDGE */ fputs ("\ -m, --modification-time don't extract file modified time\n\ -M, --multi-volume create/list/extract multi-volume archive\n\ -N, --after-date DATE,\n\ --newer DATE only store files newer than DATE\n\ -o, --old-archive,\n\ --portability write a V7 format archive, rather than ANSI format\n\ -O, --to-stdout extract files to standard output\n\ -p, --same-permissions,\n\ --preserve-permissions extract all protection information\n\ -P, --absolute-paths don't strip leading `/'s from file names\n\ --preserve like -p -s\n\ ", stdout); /* KLUDGE */ fputs ("\ -R, --record-number show record number within archive with each message\n\ --remove-files remove files after adding them to the archive\n\ -s, --same-order,\n\ --preserve-order list of names to extract is sorted to match archive\n\ --same-owner create extracted files with the same ownership \n\ -S, --sparse handle sparse files efficiently\n\ -T, --files-from F get names to extract or create from file F\n\ --null -T reads null-terminated names, disable -C\n\ --totals print total bytes written with --create\n\ -v, --verbose verbosely list files processed\n\ -V, --label NAME create archive with volume name NAME\n\ --version print tar program version number\n\ -w, --interactive,\n\ --confirmation ask for confirmation for every action\n\ ", stdout); /* KLUDGE */ fputs ("\ -W, --verify attempt to verify the archive after writing it\n\ --exclude FILE exclude file FILE\n\ -X, --exclude-from FILE exclude files listed in FILE\n\ -Z, --compress,\n\ --uncompress filter the archive through compress\n\ -z, --gzip,\n\ --ungzip filter the archive through gzip\n\ --use-compress-program PROG\n\ filter the archive through PROG (which must accept -d)\n\ --block-compress block the output of compression program for tapes\n\ -[0-7][lmh] specify drive and density\n\ --norecurse don't recurse into subdirectories when creating\n\ --unlink unlink files before creating them\n\ ", stdout); } void name_add (name) char *name; { if (n_indalloc == n_indused) { n_indalloc += 10; n_ind = (char **) (n_indused ? ck_realloc (n_ind, n_indalloc * sizeof (char *)): ck_malloc (n_indalloc * sizeof (char *))); } n_ind[n_indused++] = name; } /* * Set up to gather file names for tar. * * They can either come from stdin or from argv. */ void name_init (argc, argv) int argc; char **argv; { if (f_namefile) { if (optind < argc) { msg ("too many args with -T option"); exit (EX_ARGSBAD); } if (!strcmp (name_file, "-")) { namef = stdin; } else { namef = fopen (name_file, "r"); if (namef == NULL) { msg_perror ("can't open file %s", name_file); exit (EX_BADFILE); } } } else { /* Get file names from argv, after options. */ n_argc = argc; n_argv = argv; } } /* Read the next filename read from STREAM and null-terminate it. Put it into BUFFER, reallocating and adjusting *PBUFFER_SIZE if necessary. Return the new value for BUFFER, or NULL at end of file. */ char * read_name_from_file (buffer, pbuffer_size, stream) char *buffer; size_t *pbuffer_size; FILE *stream; { register int c; register int indx = 0; register size_t buffer_size = *pbuffer_size; while ((c = getc (stream)) != EOF && c != filename_terminator) { if (indx == buffer_size) { buffer_size += NAMSIZ; buffer = ck_realloc (buffer, buffer_size + 2); } buffer[indx++] = c; } if (indx == 0 && c == EOF) return NULL; if (indx == buffer_size) { buffer_size += NAMSIZ; buffer = ck_realloc (buffer, buffer_size + 2); } buffer[indx] = '\0'; *pbuffer_size = buffer_size; return buffer; } /* * Get the next name from argv or the name file. * * Result is in static storage and can't be relied upon across two calls. * * If CHANGE_DIRS is non-zero, treat a filename of the form "-C" as * meaning that the next filename is the name of a directory to change to. * If `filename_terminator' is '\0', CHANGE_DIRS is effectively always 0. */ char * name_next (change_dirs) int change_dirs; { static char *buffer; /* Holding pattern */ static int buffer_siz; register char *p; register char *q = 0; register int next_name_is_dir = 0; extern char *un_quote_string (); if (buffer_siz == 0) { buffer = ck_malloc (NAMSIZ + 2); buffer_siz = NAMSIZ; } if (filename_terminator == '\0') change_dirs = 0; tryagain: if (namef == NULL) { if (n_indscan < n_indused) p = n_ind[n_indscan++]; else if (optind < n_argc) /* Names come from argv, after options */ p = n_argv[optind++]; else { if (q) msg ("Missing filename after -C"); return NULL; } /* JF trivial support for -C option. I don't know if chdir'ing at this point is dangerous or not. It seems to work, which is all I ask. */ if (change_dirs && !q && p[0] == '-' && p[1] == 'C' && p[2] == '\0') { q = p; goto tryagain; } if (q) { if (chdir (p) < 0) msg_perror ("Can't chdir to %s", p); q = 0; goto tryagain; } /* End of JF quick -C hack */ #if 0 if (f_exclude && check_exclude (p)) goto tryagain; #endif return un_quote_string (p); } while (p = read_name_from_file (buffer, &buffer_siz, namef)) { buffer = p; if (*p == '\0') continue; /* Ignore empty lines. */ q = p + strlen (p) - 1; while (q > p && *q == '/')/* Zap trailing "/"s. */ *q-- = '\0'; if (change_dirs && next_name_is_dir == 0 && p[0] == '-' && p[1] == 'C' && p[2] == '\0') { next_name_is_dir = 1; goto tryagain; } if (next_name_is_dir) { if (chdir (p) < 0) msg_perror ("Can't change to directory %s", p); next_name_is_dir = 0; goto tryagain; } #if 0 if (f_exclude && check_exclude (p)) goto tryagain; #endif return un_quote_string (p); } return NULL; } /* * Close the name file, if any. */ void name_close () { if (namef != NULL && namef != stdin) fclose (namef); } /* * Gather names in a list for scanning. * Could hash them later if we really care. * * If the names are already sorted to match the archive, we just * read them one by one. name_gather reads the first one, and it * is called by name_match as appropriate to read the next ones. * At EOF, the last name read is just left in the buffer. * This option lets users of small machines extract an arbitrary * number of files by doing "tar t" and editing down the list of files. */ void name_gather () { register char *p; static struct name *namebuf; /* One-name buffer */ static namelen; static char *chdir_name; if (f_sorted_names) { if (!namelen) { namelen = NAMSIZ; namebuf = (struct name *) ck_malloc (sizeof (struct name) + NAMSIZ); } p = name_next (0); if (p) { if (*p == '-' && p[1] == 'C' && p[2] == '\0') { chdir_name = name_next (0); p = name_next (0); if (!p) { msg ("Missing file name after -C"); exit (EX_ARGSBAD); } namebuf->change_dir = chdir_name; } namebuf->length = strlen (p); if (namebuf->length >= namelen) { namebuf = (struct name *) ck_realloc (namebuf, sizeof (struct name) + namebuf->length); namelen = namebuf->length; } strncpy (namebuf->name, p, namebuf->length); namebuf->name[namebuf->length] = 0; namebuf->next = (struct name *) NULL; namebuf->found = 0; namelist = namebuf; namelast = namelist; } return; } /* Non sorted names -- read them all in */ while (p = name_next (0)) addname (p); } /* * Add a name to the namelist. */ void addname (name) char *name; /* pointer to name */ { register int i; /* Length of string */ register struct name *p; /* Current struct pointer */ static char *chdir_name; char *new_name (); if (name[0] == '-' && name[1] == 'C' && name[2] == '\0') { chdir_name = name_next (0); name = name_next (0); if (!chdir_name) { msg ("Missing file name after -C"); exit (EX_ARGSBAD); } if (chdir_name[0] != '/') { char *path = ck_malloc (PATH_MAX); #if defined(__MSDOS__) || defined(HAVE_GETCWD) || defined(_POSIX_VERSION) if (!getcwd (path, PATH_MAX)) { msg ("Couldn't get current directory."); exit (EX_SYSTEM); } #else char *getwd (); if (!getwd (path)) { msg ("Couldn't get current directory: %s", path); exit (EX_SYSTEM); } #endif chdir_name = new_name (path, chdir_name); free (path); } } if (name) { i = strlen (name); /*NOSTRICT*/ p = (struct name *) malloc ((unsigned) (sizeof (struct name) + i)); } else p = (struct name *) malloc ((unsigned) (sizeof (struct name))); if (!p) { if (name) msg ("cannot allocate mem for name '%s'.", name); else msg ("cannot allocate mem for chdir record."); exit (EX_SYSTEM); } p->next = (struct name *) NULL; if (name) { p->fake = 0; p->length = i; strncpy (p->name, name, i); p->name[i] = '\0'; /* Null term */ } else p->fake = 1; p->found = 0; p->regexp = 0; /* Assume not a regular expression */ p->firstch = 1; /* Assume first char is literal */ p->change_dir = chdir_name; p->dir_contents = 0; /* JF */ if (name) { if (index (name, '*') || index (name, '[') || index (name, '?')) { p->regexp = 1; /* No, it's a regexp */ if (name[0] == '*' || name[0] == '[' || name[0] == '?') p->firstch = 0; /* Not even 1st char literal */ } } if (namelast) namelast->next = p; namelast = p; if (!namelist) namelist = p; } /* * Return nonzero if name P (from an archive) matches any name from * the namelist, zero if not. */ int name_match (p) register char *p; { register struct name *nlp; register int len; again: if (0 == (nlp = namelist)) /* Empty namelist is easy */ return 1; if (nlp->fake) { if (nlp->change_dir && chdir (nlp->change_dir)) msg_perror ("Can't change to directory %d", nlp->change_dir); namelist = 0; return 1; } len = strlen (p); for (; nlp != 0; nlp = nlp->next) { /* If first chars don't match, quick skip */ if (nlp->firstch && nlp->name[0] != p[0]) continue; /* Regular expressions (shell globbing, actually). */ if (nlp->regexp) { if (fnmatch (nlp->name, p, FNM_LEADING_DIR) == 0) { nlp->found = 1; /* Remember it matched */ if (f_startfile) { free ((void *) namelist); namelist = 0; } if (nlp->change_dir && chdir (nlp->change_dir)) msg_perror ("Can't change to directory %s", nlp->change_dir); return 1; /* We got a match */ } continue; } /* Plain Old Strings */ if (nlp->length <= len /* Archive len >= specified */ && (p[nlp->length] == '\0' || p[nlp->length] == '/') /* Full match on file/dirname */ && strncmp (p, nlp->name, nlp->length) == 0) /* Name compare */ { nlp->found = 1; /* Remember it matched */ if (f_startfile) { free ((void *) namelist); namelist = 0; } if (nlp->change_dir && chdir (nlp->change_dir)) msg_perror ("Can't change to directory %s", nlp->change_dir); return 1; /* We got a match */ } } /* * Filename from archive not found in namelist. * If we have the whole namelist here, just return 0. * Otherwise, read the next name in and compare it. * If this was the last name, namelist->found will remain on. * If not, we loop to compare the newly read name. */ if (f_sorted_names && namelist->found) { name_gather (); /* Read one more */ if (!namelist->found) goto again; } return 0; } /* * Print the names of things in the namelist that were not matched. */ void names_notfound () { register struct name *nlp, *next; register char *p; for (nlp = namelist; nlp != 0; nlp = next) { next = nlp->next; if (!nlp->found) msg ("%s not found in archive", nlp->name); /* * We could free() the list, but the process is about * to die anyway, so save some CPU time. Amigas and * other similarly broken software will need to waste * the time, though. */ #ifdef amiga if (!f_sorted_names) free (nlp); #endif } namelist = (struct name *) NULL; namelast = (struct name *) NULL; if (f_sorted_names) { while (0 != (p = name_next (1))) msg ("%s not found in archive", p); } } /* These next routines were created by JF */ void name_expand () { ; } /* This is like name_match(), except that it returns a pointer to the name it matched, and doesn't set ->found The caller will have to do that if it wants to. Oh, and if the namelist is empty, it returns 0, unlike name_match(), which returns TRUE */ struct name * name_scan (p) register char *p; { register struct name *nlp; register int len; again: if (0 == (nlp = namelist)) /* Empty namelist is easy */ return 0; len = strlen (p); for (; nlp != 0; nlp = nlp->next) { /* If first chars don't match, quick skip */ if (nlp->firstch && nlp->name[0] != p[0]) continue; /* Regular expressions */ if (nlp->regexp) { if (fnmatch (nlp->name, p, FNM_LEADING_DIR) == 0) return nlp; /* We got a match */ continue; } /* Plain Old Strings */ if (nlp->length <= len /* Archive len >= specified */ && (p[nlp->length] == '\0' || p[nlp->length] == '/') /* Full match on file/dirname */ && strncmp (p, nlp->name, nlp->length) == 0) /* Name compare */ return nlp; /* We got a match */ } /* * Filename from archive not found in namelist. * If we have the whole namelist here, just return 0. * Otherwise, read the next name in and compare it. * If this was the last name, namelist->found will remain on. * If not, we loop to compare the newly read name. */ if (f_sorted_names && namelist->found) { name_gather (); /* Read one more */ if (!namelist->found) goto again; } return (struct name *) 0; } /* This returns a name from the namelist which doesn't have ->found set. It sets ->found before returning, so successive calls will find and return all the non-found names in the namelist */ struct name *gnu_list_name; char * name_from_list () { if (!gnu_list_name) gnu_list_name = namelist; while (gnu_list_name && gnu_list_name->found) gnu_list_name = gnu_list_name->next; if (gnu_list_name) { gnu_list_name->found++; if (gnu_list_name->change_dir) if (chdir (gnu_list_name->change_dir) < 0) msg_perror ("can't chdir to %s", gnu_list_name->change_dir); return gnu_list_name->name; } return (char *) 0; } void blank_name_list () { struct name *n; gnu_list_name = 0; for (n = namelist; n; n = n->next) n->found = 0; } char * new_name (path, name) char *path, *name; { char *path_buf; path_buf = (char *) malloc (strlen (path) + strlen (name) + 2); if (path_buf == 0) { msg ("Can't allocate memory for name '%s/%s", path, name); exit (EX_SYSTEM); } (void) sprintf (path_buf, "%s/%s", path, name); return path_buf; } /* returns non-zero if the luser typed 'y' or 'Y', zero otherwise. */ int confirm (action, file) char *action, *file; { int c, nl; static FILE *confirm_file = 0; extern FILE *msg_file; extern char TTY_NAME[]; fprintf (msg_file, "%s %s?", action, file); fflush (msg_file); if (!confirm_file) { confirm_file = (archive == 0) ? fopen (TTY_NAME, "r") : stdin; if (!confirm_file) { msg ("Can't read confirmation from user"); exit (EX_SYSTEM); } } c = getc (confirm_file); for (nl = c; nl != '\n' && nl != EOF; nl = getc (confirm_file)) ; return (c == 'y' || c == 'Y'); } char *x_buffer = 0; int size_x_buffer; int free_x_buffer; char **exclude = 0; int size_exclude = 0; int free_exclude = 0; char **re_exclude = 0; int size_re_exclude = 0; int free_re_exclude = 0; void add_exclude (name) char *name; { /* char *rname;*/ /* char **tmp_ptr;*/ int size_buf; un_quote_string (name); size_buf = strlen (name); if (x_buffer == 0) { x_buffer = (char *) ck_malloc (size_buf + 1024); free_x_buffer = 1024; } else if (free_x_buffer <= size_buf) { char *old_x_buffer; char **tmp_ptr; old_x_buffer = x_buffer; x_buffer = (char *) ck_realloc (x_buffer, size_x_buffer + 1024); free_x_buffer = 1024; for (tmp_ptr = exclude; tmp_ptr < exclude + size_exclude; tmp_ptr++) *tmp_ptr = x_buffer + ((*tmp_ptr) - old_x_buffer); for (tmp_ptr = re_exclude; tmp_ptr < re_exclude + size_re_exclude; tmp_ptr++) *tmp_ptr = x_buffer + ((*tmp_ptr) - old_x_buffer); } if (is_regex (name)) { if (free_re_exclude == 0) { re_exclude = (char **) (re_exclude ? ck_realloc (re_exclude, (size_re_exclude + 32) * sizeof (char *)): ck_malloc (sizeof (char *) * 32)); free_re_exclude += 32; } re_exclude[size_re_exclude] = x_buffer + size_x_buffer; size_re_exclude++; free_re_exclude--; } else { if (free_exclude == 0) { exclude = (char **) (exclude ? ck_realloc (exclude, (size_exclude + 32) * sizeof (char *)): ck_malloc (sizeof (char *) * 32)); free_exclude += 32; } exclude[size_exclude] = x_buffer + size_x_buffer; size_exclude++; free_exclude--; } strcpy (x_buffer + size_x_buffer, name); size_x_buffer += size_buf + 1; free_x_buffer -= size_buf + 1; } void add_exclude_file (file) char *file; { FILE *fp; char buf[1024]; if (strcmp (file, "-")) fp = fopen (file, "r"); else /* Let's hope the person knows what they're doing. */ /* Using -X - -T - -f - will get you *REALLY* strange results. . . */ fp = stdin; if (!fp) { msg_perror ("can't open %s", file); exit (2); } while (fgets (buf, 1024, fp)) { /* int size_buf;*/ char *end_str; end_str = rindex (buf, '\n'); if (end_str) *end_str = '\0'; add_exclude (buf); } fclose (fp); } int is_regex (str) char *str; { return index (str, '*') || index (str, '[') || index (str, '?'); } /* Returns non-zero if the file 'name' should not be added/extracted */ int check_exclude (name) char *name; { int n; char *str; extern char *strstr (); for (n = 0; n < size_re_exclude; n++) { if (fnmatch (re_exclude[n], name, FNM_LEADING_DIR) == 0) return 1; } for (n = 0; n < size_exclude; n++) { /* Accept the output from strstr only if it is the last part of the string. There is certainly a faster way to do this. . . */ if ((str = strstr (name, exclude[n])) && (str == name || str[-1] == '/') && str[strlen (exclude[n])] == '\0') return 1; } return 0; }