/*====================================================================*
*
* Copyright (c) 2013 Qualcomm Atheros, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted (subject to the limitations
* in the disclaimer below) provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* * Neither the name of Qualcomm Atheros nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
* GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
* COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* efsu.c - Ethernet Frame Send Utility;
*
* convert hexadecimal text files to ethernet frames and transmit
* them over the network; basically, it is a 'send your own frame'
* utility;
*
* the program works like cat, sending file after file to a given
* interface; as each file is read, all hexadecimal octets in the
* file are converted to bytes and buffered; a semicolon causes a
* buffer transmit as does the end of file; script-style comments
* starting with hash (#) and c-language-style comments starting
* with slash-slash or slash-asterisk are consumed and discard as
* the file is read; the errors that can occur are non-hex digits
* and odd number of hex digits;
*
*
*--------------------------------------------------------------------*/
/*====================================================================*
* system header files;
*--------------------------------------------------------------------*/
#include <stdlib.h>
#include <string.h>
#include <limits.h>
/*====================================================================*
* custom header files;
*--------------------------------------------------------------------*/
#include "../tools/getoptv.h"
#include "../tools/putoptv.h"
#include "../tools/error.h"
#include "../tools/memory.h"
#include "../tools/number.h"
#include "../tools/symbol.h"
#include "../tools/flags.h"
#include "../ether/channel.h"
/*====================================================================*
* custom source files;
*--------------------------------------------------------------------*/
#ifndef MAKEFILE
#include "../tools/getoptv.c"
#include "../tools/putoptv.c"
#include "../tools/version.c"
#include "../tools/error.c"
#include "../tools/hexencode.c"
#include "../tools/hexload.c"
#include "../tools/hexdump.c"
#include "../tools/todigit.c"
#include "../tools/uintspec.c"
#include "../tools/basespec.c"
#include "../tools/synonym.c"
#endif
#ifndef MAKEFILE
#include "../ether/openchannel.c"
#include "../ether/closechannel.c"
#include "../ether/readpacket.c"
#include "../ether/sendpacket.c"
#include "../ether/channel.c"
#endif
/*====================================================================*
* program contants;
*--------------------------------------------------------------------*/
#define EFSU_INTERFACE "PLC"
#define EFSU_ETHERTYPE 0x88E1
#define EFSU_PAUSE 0
#define EFSU_DELAY 0
#define EFSU_LOOP 1
#ifndef ETHER_CRC_LEN
#define ETHER_CRC_LEN 4
#endif
/*====================================================================*
* program variables;
*--------------------------------------------------------------------*/
static const struct _term_ protocols [] =
{
{
"hp10",
"887B"
},
{
"hpav",
"88E1"
}
};
/*====================================================================*
*
* void function (struct channel * channel, void * memory, ssize_t extent);
*
* read Ethernet frame descriptions from stdin and transmit them
* as raw ethernet frames; wait for a response if CHANNEL_LISTEN
* flagword bit is set;
*
*
*--------------------------------------------------------------------*/
static void function (struct channel * channel, void * memory, ssize_t extent)
{
struct ether_header * frame = (struct ether_header *)(memory);
unsigned length;
while ((length = (unsigned)(hexload (memory, extent, stdin))) > 0)
{
if (length < (ETHER_MIN_LEN - ETHER_CRC_LEN))
{
error (1, ENOTSUP, "Frame size of %d is less than %d bytes", length, (ETHER_MIN_LEN - ETHER_CRC_LEN));
}
if (length > (ETHER_MAX_LEN - ETHER_CRC_LEN))
{
error (1, ENOTSUP, "Frame size of %d is more than %d bytes", length, (ETHER_MAX_LEN - ETHER_CRC_LEN));
}
if (_anyset (channel->flags, CHANNEL_UPDATE_TARGET))
{
memcpy (frame->ether_dhost, channel->peer, sizeof (frame->ether_dhost));
}
if (_anyset (channel->flags, CHANNEL_UPDATE_SOURCE))
{
memcpy (frame->ether_shost, channel->host, sizeof (frame->ether_shost));
}
sendpacket (channel, memory, length);
if (_anyset (channel->flags, CHANNEL_LISTEN))
{
while (readpacket (channel, memory, extent) > 0);
}
}
return;
}
/*====================================================================*
*
* void iterate (int argc, char const * argv [], void * memory, ssize_t extent, unsigned pause);
*
*
*
*--------------------------------------------------------------------*/
static void iterate (int argc, char const * argv [], struct channel * channel, unsigned pause)
{
byte buffer [ETHER_MAX_LEN];
if (!argc)
{
function (channel, buffer, sizeof (buffer));
}
while ((argc) && (* argv))
{
if (!freopen (* argv, "rb", stdin))
{
error (1, errno, "Can't open %s", * argv);
}
function (channel, buffer, sizeof (buffer));
argc--;
argv++;
if ((argc) && (* argv))
{
sleep (pause);
}
}
return;
}
/*====================================================================*
*
* int main (int argc, char const * argv []);
*
*
*
*--------------------------------------------------------------------*/
int main (int argc, char const * argv [])
{
extern struct channel channel;
static char const * optv [] =
{
"d:e:hi:l:p:t:vw:",
PUTOPTV_S_FUNNEL,
"Ethernet Frame Send Utility",
"d x\treplace destination address with (x)",
"e x\techo return frames having ethertype (x) [" LITERAL (EFSU_ETHERTYPE) "]",
"h\treplace source address with host address",
#if defined (WINPCAP) || defined (LIBPCAP)
"i n\thost interface is (n) [" LITERAL (CHANNEL_ETHNUMBER) "]",
#else
"i s\thost interface is (s) [" LITERAL (CHANNEL_ETHDEVICE) "]",
#endif
"l n\trepeat file sequence (n) times [" LITERAL (EFSU_LOOP) "]",
"p n\twait (n) seconds between files [" LITERAL (EFSU_PAUSE) "]",
"t n\tread timeout is (n) milliseconds [" LITERAL (CHANNEL_TIMEOUT) "]",
"v\tverbose messages",
"w n\twait (n) seconds between loops [" LITERAL (EFSU_DELAY) "]",
(char const *) (0)
};
unsigned pause = EFSU_PAUSE;
unsigned delay = EFSU_DELAY;
unsigned loop = EFSU_LOOP;
signed c;
channel.type = EFSU_ETHERTYPE;
if (getenv (EFSU_INTERFACE))
{
#if defined (WINPCAP) || defined (LIBPCAP)
channel.ifindex = atoi (getenv (EFSU_INTERFACE));
#else
channel.ifname = strdup (getenv (EFSU_INTERFACE));
#endif
}
optind = 1;
while ((c = getoptv (argc, argv, optv)) != -1)
{
switch (c)
{
case 'd':
_setbits (channel.flags, CHANNEL_UPDATE_TARGET);
if (!hexencode (channel.peer, sizeof (channel.peer), optarg))
{
error (1, errno, "%s", optarg);
}
break;
case 'e':
_setbits (channel.flags, CHANNEL_LISTEN);
channel.type = (uint16_t)(basespec (synonym (optarg, protocols, SIZEOF (protocols)), 16, sizeof (channel.type)));
break;
case 'h':
_setbits (channel.flags, CHANNEL_UPDATE_SOURCE);
break;
case 'i':
#if defined (WINPCAP) || defined (LIBPCAP)
channel.ifindex = atoi (optarg);
#else
channel.ifname = optarg;
#endif
break;
case 'l':
loop = (unsigned)(uintspec (optarg, 0, UINT_MAX));
break;
case 'p':
pause = (unsigned)(uintspec (optarg, 0, 1200));
break;
case 'q':
_setbits (channel.flags, CHANNEL_SILENCE);
break;
case 't':
channel.timeout = (signed)(uintspec (optarg, 0, UINT_MAX));
break;
case 'v':
_setbits (channel.flags, CHANNEL_VERBOSE);
break;
case 'w':
delay = (unsigned)(uintspec (optarg, 0, 1200));
break;
default:
break;
}
}
argc -= optind;
argv += optind;
openchannel (&channel);
while (loop--)
{
iterate (argc, argv, &channel, pause);
if (loop)
{
sleep (delay);
}
}
closechannel (&channel);
return (0);
}