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- /* 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. */
-
- /*
- * A tar (tape archiver) program.
- *
- * Written by John Gilmore, ihnp4!hoptoad!gnu, starting 25 Aug 85.
- */
-
- #include <stdio.h>
- #include <sys/types.h> /* Needed for typedefs in tar.h */
- #include "getopt.h"
- #include "regex.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 "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},
-
- {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\
- ", 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;
- }
-