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/*
* ntcat.c
*
* Copyright (C) 1995-1997 Martin von Lwis
* Copyright (C) 1997 Rgis Duchesne
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
#define getopt_long(a,v,o,ol,x) getopt(a,v,o)
#endif
#include <unistd.h>
#include <string.h>
#include "types.h"
#include "struct.h"
#include "util.h"
#include "inode.h"
#include "nttools.h"
char *short_opts="f:o:s:B:b:1Vh";
#ifdef HAVE_GETOPT_H
struct option options[]={
{"filesystem",1,0,'f'},
{"offset",1,0,'o'},
{"size",1,0,'s'},
{"bias",1,0,'B'},
{"buflen",1,0,'b'},
{"8859-1",0,0,'1'},
{"version",0,0,'V'},
{"help",0,0,'h'},
{0,0,0,0}
};
#endif
char usage_str[]=
"ntcat: dumps the contents of an NTFS file to stdout\n"
"ntcat [OPTIONS] [directory/]filename\n"
" --filesystem, -f device Use device\n"
" --offset, -o offset Use offset\n"
" --size, -s size Only first size bytes\n"
" --bias, -B bias Use partition bias\n"
" --buflen, -b buflen Read with buffer size buflen\n"
" --8859-1, -1 Use charset ISO-8859-1\n"
" (default is UTF-8)\n"
" --version, -V Display version\n"
" --help, -h Display this message\n"
;
void usage(void)
{
/* fprintf(stderr,"ntcat [-f device] [-o offset] [-l size] [-1] [directory/]filename\n");*/
fprintf(stderr,usage_str);
}
/* print the file ino on stdout */
void ntfs_cat_file(ntfs_inode *ino,int offset,int length,int bufsize)
{
int position;
char *buf;
ntfs_io io;
position=offset;
if(!bufsize) bufsize=8192;
buf=(char*)malloc(bufsize);
/* Very large file */
if(!buf)
{
bufsize=8192;
buf=(char*)malloc(bufsize);
if(!buf)
{
perror("ntcat");
exit(0);
}
}
io.fn_put=ntfs_put;
io.fn_get=0;
io.do_read=1;
io.param=buf;
io.size=bufsize;
/* read from the unnamed data attribute */
while(ntfs_read_attr(ino,ino->vol->at_data,
NULL,position,&io)==0 && io.size)
{
write(1,buf,io.size);
position+=io.size;
length-=io.size;
if(length==0)
break;
io.param=buf;
io.size=bufsize;
}
free(buf);
}
int main(int argc,char *argv[])
{
int c;
char *device=0;
int offset=0;
int length=0;
char *name;
ntfs_volume *volume;
ntfs_inode ino;
int inum;
int bias=0;
int buflen=8192;
extern int opterr,optind;
extern char* optarg;
unsigned int charset=nct_utf8;
opterr=1;
while((c=getopt_long(argc,argv,short_opts,options,NULL))>0)
switch(c)
{
case 'f': device=optarg;break;
case 'o': offset=strtol(optarg,NULL,0);break;
case 's': length=strtol(optarg,NULL,0);break;
case 'B': bias=strtol(optarg,NULL,0);break;
case 'b': buflen=strtol(optarg,NULL,0);break;
case '1': charset=nct_iso8859_1;break;
case 'V': printf("ntcat " NTFS_VERSION "\n");exit(0);break;
case 'h': usage();exit(0);break;
}
name=argv[optind];
volume=ntfs_open_volume(device,bias,1,0);
if(!volume)return 1;
volume->nct=charset;
inum=5;
/* walk the directory tree */
do{
char *next;
if(ntfs_init_inode(&ino,volume,inum)){
fprintf(stderr,"error finding %s\n",name);
return 1;
}
if(!name || !*name)break;
next=strchr(name,'/');
if(next){
*next='\0';
next++;
}
inum=ntfs_find_file(&ino,name);
if(inum==-1){
fprintf(stderr,"%s not found\n",name);
return 1;
}
name=next;
}while(1);
if(ntfs_init_inode(&ino,volume,inum))
fprintf(stderr,"error opening %s\n",name);
ntfs_cat_file(&ino,offset,length,buflen);
return 0;
}
/*
* Local variables:
* c-file-style: "linux"
* End:
*/
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