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459 lines
11 KiB
459 lines
11 KiB
/**
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* ntfscat - Part of the Linux-NTFS project.
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*
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* Copyright (c) 2003-2005 Richard Russon
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* Copyright (c) 2003-2005 Anton Altaparmakov
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* Copyright (c) 2003-2005 Szabolcs Szakacsits
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* Copyright (c) 2007 Yura Pakhuchiy
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*
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* This utility will concatenate files and print on the standard output.
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with this program (in the main directory of the Linux-NTFS
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* distribution in the file COPYING); 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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#include "config.h"
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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_GETOPT_H
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#include <getopt.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_STRING_H
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#include <string.h>
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#endif
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#include "types.h"
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#include "attrib.h"
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#include "utils.h"
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#include "volume.h"
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#include "debug.h"
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#include "dir.h"
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#include "ntfscat.h"
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/* #include "version.h" */
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#include "utils.h"
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static const char *EXEC_NAME = "ntfscat";
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static struct options opts;
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/**
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* version - Print version information about the program
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*
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* Print a copyright statement and a brief description of the program.
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*
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* Return: none
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*/
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static void version(void)
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{
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ntfs_log_info("\n%s v%s (libntfs-3g) - Concatenate files and print "
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"on the standard output.\n\n", EXEC_NAME, VERSION);
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ntfs_log_info("Copyright (c) 2003-2005 Richard Russon\n");
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ntfs_log_info("Copyright (c) 2003-2005 Anton Altaparmakov\n");
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ntfs_log_info("Copyright (c) 2003-2005 Szabolcs Szakacsits\n");
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ntfs_log_info("Copyright (c) 2007 Yura Pakhuchiy\n");
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ntfs_log_info("\n%s\n%s%s\n", ntfs_gpl, ntfs_bugs, ntfs_home);
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}
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/**
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* usage - Print a list of the parameters to the program
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*
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* Print a list of the parameters and options for the program.
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*
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* Return: none
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*/
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static void usage(void)
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{
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ntfs_log_info("\nUsage: %s [options] device [file]\n\n"
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" -a, --attribute TYPE Display this attribute type\n"
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" -n, --attribute-name NAME Display this attribute name\n"
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" -i, --inode NUM Display this inode\n\n"
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" -f, --force Use less caution\n"
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" -h, --help Print this help\n"
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" -q, --quiet Less output\n"
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" -V, --version Version information\n"
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" -v, --verbose More output\n\n",
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// Does not work for compressed files at present so leave undocumented...
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// " -r --raw Display the raw data (e.g. for compressed or encrypted file)",
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EXEC_NAME);
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ntfs_log_info("%s%s\n", ntfs_bugs, ntfs_home);
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}
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/**
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* parse_attribute - Read an attribute name, or number
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* @value: String to be parsed
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* @attr: Resulting attribute id (on success)
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*
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* Read a string representing an attribute. It may be a decimal, octal or
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* hexadecimal number, or the attribute name in full. The leading $ sign is
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* optional.
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*
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* Return: 1 Success, a valid attribute name or number
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* 0 Error, not an attribute name or number
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*/
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static int parse_attribute(const char *value, ATTR_TYPES *attr)
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{
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static const char *attr_name[] = {
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"$STANDARD_INFORMATION",
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"$ATTRIBUTE_LIST",
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"$FILE_NAME",
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"$OBJECT_ID",
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"$SECURITY_DESCRIPTOR",
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"$VOLUME_NAME",
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"$VOLUME_INFORMATION",
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"$DATA",
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"$INDEX_ROOT",
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"$INDEX_ALLOCATION",
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"$BITMAP",
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"$REPARSE_POINT",
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"$EA_INFORMATION",
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"$EA",
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"$PROPERTY_SET",
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"$LOGGED_UTILITY_STREAM",
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NULL
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};
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int i;
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long num;
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for (i = 0; attr_name[i]; i++) {
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if ((strcmp(value, attr_name[i]) == 0) ||
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(strcmp(value, attr_name[i] + 1) == 0)) {
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*attr = (ATTR_TYPES)cpu_to_le32((i + 1) * 16);
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return 1;
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}
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}
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num = strtol(value, NULL, 0);
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if ((num > 0) && (num < 257)) {
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*attr = (ATTR_TYPES)cpu_to_le32(num);
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return 1;
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}
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return 0;
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}
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/**
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* parse_options - Read and validate the programs command line
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*
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* Read the command line, verify the syntax and parse the options.
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* This function is very long, but quite simple.
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*
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* Return: 1 Success
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* 0 Error, one or more problems
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*/
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static int parse_options(int argc, char **argv)
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{
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static const char *sopt = "-a:fh?i:n:qVvr";
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static const struct option lopt[] = {
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{ "attribute", required_argument, NULL, 'a' },
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{ "attribute-name", required_argument, NULL, 'n' },
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{ "force", no_argument, NULL, 'f' },
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{ "help", no_argument, NULL, 'h' },
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{ "inode", required_argument, NULL, 'i' },
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{ "quiet", no_argument, NULL, 'q' },
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{ "version", no_argument, NULL, 'V' },
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{ "verbose", no_argument, NULL, 'v' },
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{ "raw", no_argument, NULL, 'r' },
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{ NULL, 0, NULL, 0 }
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};
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int c = -1;
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int err = 0;
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int ver = 0;
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int help = 0;
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int levels = 0;
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ATTR_TYPES attr = AT_UNUSED;
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opterr = 0; /* We'll handle the errors, thank you. */
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opts.inode = -1;
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opts.attr = const_cpu_to_le32(-1);
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opts.attr_name = NULL;
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opts.attr_name_len = 0;
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while ((c = getopt_long(argc, argv, sopt, lopt, NULL)) != -1) {
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switch (c) {
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case 1: /* A non-option argument */
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if (!opts.device) {
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opts.device = argv[optind - 1];
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} else if (!opts.file) {
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opts.file = argv[optind - 1];
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} else {
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ntfs_log_error("You must specify exactly one "
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"file.\n");
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err++;
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}
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break;
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case 'a':
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if (opts.attr != const_cpu_to_le32(-1)) {
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ntfs_log_error("You must specify exactly one "
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"attribute.\n");
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} else if (parse_attribute(optarg, &attr) > 0) {
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opts.attr = attr;
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break;
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} else {
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ntfs_log_error("Couldn't parse attribute.\n");
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}
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err++;
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break;
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case 'f':
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opts.force++;
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break;
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case 'h':
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help++;
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break;
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case 'i':
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if (opts.inode != -1)
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ntfs_log_error("You must specify exactly one inode.\n");
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else if (utils_parse_size(optarg, &opts.inode, FALSE))
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break;
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else
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ntfs_log_error("Couldn't parse inode number.\n");
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err++;
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break;
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case 'n':
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opts.attr_name_len = ntfs_mbstoucs(optarg,
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&opts.attr_name);
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if (opts.attr_name_len < 0) {
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ntfs_log_perror("Invalid attribute name '%s'",
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optarg);
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usage();
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}
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break;
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case 'q':
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opts.quiet++;
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ntfs_log_clear_levels(NTFS_LOG_LEVEL_QUIET);
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break;
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case 'V':
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ver++;
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break;
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case 'v':
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opts.verbose++;
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ntfs_log_set_levels(NTFS_LOG_LEVEL_VERBOSE);
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break;
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case 'r':
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opts.raw = TRUE;
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break;
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case '?':
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if (strncmp (argv[optind-1], "--log-", 6) == 0) {
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if (!ntfs_log_parse_option (argv[optind-1]))
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err++;
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break;
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}
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/* fall through */
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default:
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ntfs_log_error("Unknown option '%s'.\n", argv[optind-1]);
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err++;
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break;
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}
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}
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/* Make sure we're in sync with the log levels */
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levels = ntfs_log_get_levels();
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if (levels & NTFS_LOG_LEVEL_VERBOSE)
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opts.verbose++;
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if (!(levels & NTFS_LOG_LEVEL_QUIET))
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opts.quiet++;
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if (help || ver) {
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opts.quiet = 0;
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} else {
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if (opts.device == NULL) {
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ntfs_log_error("You must specify a device.\n");
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err++;
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} else if (opts.file == NULL && opts.inode == -1) {
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ntfs_log_error("You must specify a file or inode "
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"with the -i option.\n");
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err++;
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} else if (opts.file != NULL && opts.inode != -1) {
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ntfs_log_error("You can't specify both a file and inode.\n");
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err++;
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}
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if (opts.quiet && opts.verbose) {
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ntfs_log_error("You may not use --quiet and --verbose at the "
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"same time.\n");
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err++;
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}
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}
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if (ver)
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version();
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if (help || err)
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usage();
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/* tri-state 0 : done, 1 : error, -1 : proceed */
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return (err ? 1 : (help || ver ? 0 : -1));
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}
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/**
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* index_get_size - Find the INDX block size from the index root
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* @inode: Inode of the directory to be checked
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*
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* Find the size of a directory's INDX block from the INDEX_ROOT attribute.
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*
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* Return: n Success, the INDX blocks are n bytes in size
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* 0 Error, not a directory
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*/
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static int index_get_size(ntfs_inode *inode)
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{
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ATTR_RECORD *attr90;
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INDEX_ROOT *iroot;
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attr90 = find_first_attribute(AT_INDEX_ROOT, inode->mrec);
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if (!attr90)
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return 0; // not a directory
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iroot = (INDEX_ROOT*)((u8*)attr90 + le16_to_cpu(attr90->value_offset));
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return le32_to_cpu(iroot->index_block_size);
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}
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/**
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* cat
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*/
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static int cat(ntfs_volume *vol, ntfs_inode *inode, ATTR_TYPES type,
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ntfschar *name, int namelen)
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{
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const int bufsize = 4096;
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char *buffer;
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ntfs_attr *attr;
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s64 bytes_read, written;
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s64 offset;
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u32 block_size;
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buffer = malloc(bufsize);
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if (!buffer)
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return 1;
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attr = ntfs_attr_open(inode, type, name, namelen);
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if (!attr) {
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ntfs_log_error("Cannot find attribute type 0x%x.\n",
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le32_to_cpu(type));
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free(buffer);
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return 1;
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}
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if ((inode->mft_no < 2) && (attr->type == AT_DATA))
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block_size = vol->mft_record_size;
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else if (attr->type == AT_INDEX_ALLOCATION)
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block_size = index_get_size(inode);
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else
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block_size = 0;
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offset = 0;
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for (;;) {
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if (!opts.raw && block_size > 0) {
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// These types have fixup
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bytes_read = ntfs_attr_mst_pread(attr, offset, 1, block_size, buffer);
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if (bytes_read > 0)
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bytes_read *= block_size;
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} else {
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bytes_read = ntfs_attr_pread(attr, offset, bufsize, buffer);
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}
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//ntfs_log_info("read %lld bytes\n", bytes_read);
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if (bytes_read == -1) {
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ntfs_log_perror("ERROR: Couldn't read file");
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break;
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}
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if (!bytes_read)
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break;
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written = fwrite(buffer, 1, bytes_read, stdout);
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if (written != bytes_read) {
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ntfs_log_perror("ERROR: Couldn't output all data!");
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break;
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}
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offset += bytes_read;
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}
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ntfs_attr_close(attr);
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free(buffer);
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return 0;
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}
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/**
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* main - Begin here
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*
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* Start from here.
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*
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* Return: 0 Success, the program worked
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* 1 Error, something went wrong
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*/
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int main(int argc, char *argv[])
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{
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ntfs_volume *vol;
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ntfs_inode *inode;
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ATTR_TYPES attr;
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int res;
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int result = 1;
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ntfs_log_set_handler(ntfs_log_handler_stderr);
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res = parse_options(argc, argv);
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if (res >= 0)
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return (res);
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utils_set_locale();
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vol = utils_mount_volume(opts.device, NTFS_MNT_RDONLY |
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(opts.force ? NTFS_MNT_RECOVER : 0));
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if (!vol) {
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ntfs_log_perror("ERROR: couldn't mount volume");
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return 1;
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}
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if (opts.inode != -1)
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inode = ntfs_inode_open(vol, opts.inode);
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else {
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#ifdef HAVE_WINDOWS_H
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char *unix_name;
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unix_name = ntfs_utils_unix_path(opts.file);
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if (unix_name) {
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inode = ntfs_pathname_to_inode(vol, NULL,
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unix_name);
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free(unix_name);
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} else
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inode = (ntfs_inode*)NULL;
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#else
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inode = ntfs_pathname_to_inode(vol, NULL, opts.file);
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#endif
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}
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if (!inode) {
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ntfs_log_perror("ERROR: Couldn't open inode");
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return 1;
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}
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attr = AT_DATA;
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if (opts.attr != const_cpu_to_le32(-1))
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attr = opts.attr;
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result = cat(vol, inode, attr, opts.attr_name, opts.attr_name_len);
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ntfs_inode_close(inode);
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ntfs_umount(vol, FALSE);
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return result;
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}
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