165 lines
3.9 KiB
C
165 lines
3.9 KiB
C
/*
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$Id: iso2.c,v 1.9 2005/10/30 14:26:11 rocky Exp $
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Copyright (C) 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Simple program to show using libiso9660 to extract a file from a
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cue/bin CD-IMAGE.
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This program can be compiled with either a C or C++ compiler. In
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the distribution we prefer C++ just to make sure we haven't broken
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things on the C++ side.
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*/
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/* This is the CD-image with an ISO-9660 filesystem */
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#define ISO9660_IMAGE_PATH "../"
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#define ISO9660_IMAGE ISO9660_IMAGE_PATH "test/isofs-m1.cue"
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#define ISO9660_PATH "/"
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#define ISO9660_FILENAME "COPYING"
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#define LOCAL_FILENAME "copying"
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "portable.h"
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#include <cdio/cdio.h>
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#include <cdio/iso9660.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STDIO_H
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#include <stdio.h>
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#endif
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#define my_exit(rc) \
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fclose (p_outfd); \
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free(p_statbuf); \
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cdio_destroy(p_cdio); \
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return rc; \
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int
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main(int argc, const char *argv[])
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{
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iso9660_stat_t *p_statbuf;
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FILE *p_outfd;
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int i;
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char const *psz_image;
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char const *psz_fname;
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char translated_name[256];
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char untranslated_name[256] = ISO9660_PATH;
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CdIo_t *p_cdio;
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if (argc > 1)
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psz_image = argv[1];
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else
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psz_image = ISO9660_IMAGE;
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if (argc > 2)
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psz_fname = argv[2];
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else
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psz_fname = ISO9660_FILENAME;
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strcat(untranslated_name, psz_fname);
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p_cdio = cdio_open (psz_image, DRIVER_UNKNOWN);
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if (!p_cdio) {
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fprintf(stderr, "Sorry, couldn't open %s\n", psz_image);
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return 1;
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}
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p_statbuf = iso9660_fs_stat (p_cdio, untranslated_name);
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if (NULL == p_statbuf)
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{
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fprintf(stderr,
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"Could not get ISO-9660 file information for file %s\n",
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untranslated_name);
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cdio_destroy(p_cdio);
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return 2;
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}
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iso9660_name_translate(psz_fname, translated_name);
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if (!(p_outfd = fopen (translated_name, "wb")))
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{
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perror ("fopen()");
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cdio_destroy(p_cdio);
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free(p_statbuf);
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return 3;
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}
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/* Copy the blocks from the ISO-9660 filesystem to the local filesystem. */
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for (i = 0; i < p_statbuf->size; i += ISO_BLOCKSIZE)
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{
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char buf[ISO_BLOCKSIZE];
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memset (buf, 0, ISO_BLOCKSIZE);
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if ( 0 != cdio_read_data_sectors (p_cdio, buf,
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p_statbuf->lsn + (i / ISO_BLOCKSIZE),
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ISO_BLOCKSIZE, 1) )
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{
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fprintf(stderr, "Error reading ISO 9660 file at lsn %lu\n",
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(long unsigned int) p_statbuf->lsn + (i / ISO_BLOCKSIZE));
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my_exit(4);
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}
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fwrite (buf, ISO_BLOCKSIZE, 1, p_outfd);
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if (ferror (p_outfd))
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{
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perror ("fwrite()");
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my_exit(5);
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}
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}
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fflush (p_outfd);
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/* Make sure the file size has the exact same byte size. Without the
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truncate below, the file will a multiple of ISO_BLOCKSIZE.
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*/
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if (ftruncate (fileno (p_outfd), p_statbuf->size))
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perror ("ftruncate()");
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printf("Extraction of file '%s' from '%s' successful.\n",
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translated_name, untranslated_name);
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my_exit(0);
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}
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