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/* frame sender
*
* FX <fx@phenoelit.de>
* Phenoelit (http://www.phenoelit.de)
* (c) 2k1
*
* $Id: file2cable.c,v 1.3 2001/07/07 17:44:30 fx Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <netinet/in.h>
#include <rpc/types.h>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <arpa/inet.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <errno.h>
#include <fcntl.h>
#include "protocols.h"
#include "packets.h"
struct {
char *device;
int verbose;
char *filename;
} cfg;
void usage(char *n);
void hexdump(unsigned char *c,int len);
void lamont_hdump(unsigned char *bp, unsigned int length);
/* ******************* MAIN ******************** */
int main(int argc,char **argv) {
char option;
extern char *optarg;
int atsock,fd;
unsigned char *buffer;
struct stat sbuf;
/* for flooding */
memset(&cfg,0,sizeof(cfg));
while ((option=getopt(argc,argv,"vi:f:"))!=EOF) {
switch (option) {
/* general */
case 'v': cfg.verbose++;
break;
case 'i': cfg.device=(char *)smalloc(strlen(optarg));
strcpy(cfg.device,optarg);
break;
case 'f': cfg.filename=(char *)smalloc(strlen(optarg));
strcpy(cfg.filename,optarg);
break;
/* fallback */
default: usage(argv[0]);
}
}
if (!(cfg.device&&cfg.filename)) usage(argv[0]);
printf("file2cable - by FX <fx@phenoelit.de>\n"
"\tThanx got to Lamont Granquist & fyodor"
" for their hexdump()\n");
if (stat(cfg.filename,&sbuf)!=0) {
perror("stat()");
exit (1);
} else {
if (cfg.verbose)
printf("%s - %ld bytes raw data\n",cfg.filename,sbuf.st_size);
buffer=(unsigned char *)smalloc(sbuf.st_size);
if ((fd=open(cfg.filename,O_RDONLY))<0) {
perror("open()");
exit (1);
}
read(fd,buffer,sbuf.st_size);
close(fd);
}
if (cfg.verbose) {
lamont_hdump(buffer,sbuf.st_size);
printf("Packet length: %d\n",(int)sbuf.st_size);
}
if ((atsock=init_socket_eth(cfg.device))<=0) exit(1);
sendpack_eth(cfg.device,atsock,buffer,sbuf.st_size);
close(atsock);
return 0;
}
void hexdump(unsigned char *c,int len) {
/* stolen from tcpdump, then kludged extensively by fyodor, then stolen
* by me from nmap's util.c */
static const char asciify[] = "................................ !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~.................................................................................................................................";
int i;
i=0;
while (i++<len) {
printf("%02X(%c) ",(unsigned int)(*c),asciify[(int)(*c)]);
c++;
if (i%8==0) printf("\n");
}
printf("\n");
}
/* A better version of hdump, from Lamont Granquist. Modified slightly
by Fyodor (fyodor@DHP.com)
obviously stolen from nmap (util.c)*/
void lamont_hdump(unsigned char *bp, unsigned int length) {
/* stolen from tcpdump, then kludged extensively */
static const char asciify[] = "................................ !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~.................................................................................................................................";
register const u_short *sp;
register const u_char *ap;
register u_int i, j;
register int nshorts, nshorts2;
register int padding;
printf("\n\t");
padding = 0;
sp = (u_short *)bp;
ap = (u_char *)bp;
nshorts = (u_int) length / sizeof(u_short);
nshorts2 = (u_int) length / sizeof(u_short);
i = 0;
j = 0;
while(1) {
while (--nshorts >= 0) {
printf(" %04x", ntohs(*sp));
sp++;
if ((++i % 8) == 0)
break;
}
if (nshorts < 0) {
if ((length & 1) && (((i-1) % 8) != 0)) {
printf(" %02x ", *(u_char *)sp);
padding++;
}
nshorts = (8 - (nshorts2 - nshorts));
while(--nshorts >= 0) {
printf(" ");
}
if (!padding) printf(" ");
}
printf(" ");
while (--nshorts2 >= 0) {
printf("%c%c", asciify[*ap], asciify[*(ap+1)]);
ap += 2;
if ((++j % 8) == 0) {
printf("\n\t");
break;
}
}
if (nshorts2 < 0) {
if ((length & 1) && (((j-1) % 8) != 0)) {
printf("%c", asciify[*ap]);
}
break;
}
}
if ((length & 1) && (((i-1) % 8) == 0)) {
printf(" %02x", *(u_char *)sp);
printf(" %c", asciify[*ap]);
}
printf("\n");
}
void usage(char *n) {
printf( "%s [-v] -i <interface> -f <file>\n", n);
exit(0);
}
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