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efeu.c
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/*====================================================================*
*
* 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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* edeu.c - Ethernet Frame Echo Utility
*
* Listen for incoming Ethernet II frames and write frame data to
* stdout as a continuous binary data stream. Since frame data can
* contain anything, users should send program output to a file or
* pipe it through a filter program to prevent corruption of the
* terminal session. If all incoming data is ASCII then directing
* stdout to the console should not cause any problems.
*
* this program can be used as a data target when testing AR6405
* UART applications; use program edsu to send files from a remote
* host and this program to display or save them;
*
*
* Contributor(s):
* Charles Maier <cmaier@qca.qualcomm.com>
*
*--------------------------------------------------------------------*/
/*====================================================================*
* system header files;
*--------------------------------------------------------------------*/
#include <fcntl.h>
#include <stdio.h>
#include <limits.h>
#include <ctype.h>
#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef __linux__
#include <net/if.h>
#include <net/if_arp.h>
#include <netpacket/packet.h>
#include <signal.h>
#endif
/*====================================================================*
* custom header files;
*--------------------------------------------------------------------*/
#include "../tools/getoptv.h"
#include "../tools/putoptv.h"
#include "../tools/memory.h"
#include "../tools/number.h"
#include "../tools/types.h"
#include "../tools/flags.h"
#include "../tools/error.h"
#include "../ether/channel.h"
/*====================================================================*
* custom source files;
*--------------------------------------------------------------------*/
#ifndef MAKEFILE
#include "../tools/getoptv.c"
#include "../tools/putoptv.c"
#include "../tools/version.c"
#include "../tools/hexdump.c"
#include "../tools/hexdecode.c"
#include "../tools/hexstring.c"
#include "../tools/uintspec.c"
#include "../tools/memswap.c"
#include "../tools/todigit.c"
#include "../tools/error.c"
#endif
#ifndef MAKEFILE
#include "../ether/channel.c"
#include "../ether/openchannel.c"
#include "../ether/closechannel.c"
#include "../ether/sendpacket.c"
#include "../ether/readpacket.c"
#endif
/*====================================================================*
* program constants;
*--------------------------------------------------------------------*/
#define EFEU_INTERFACE "PLC"
#define EFEU_ETHERTYPE ETH_P_802_2
/*====================================================================*
*
* int main (int argc, char * argv[]);
*
*
*--------------------------------------------------------------------*/
int main (int argc, char const * argv [])
{
extern struct channel channel;
struct ethernet_frame frame;
signed length;
static char const * optv [] =
{
"e:i:qt:v",
PUTOPTV_S_DIVINE,
"Qualcomm Atheros Ethernet Frame Echo Utility",
"e x\tethertype is (x) [" LITERAL (EFEU_ETHERTYPE) "]",
#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
"q\tsuppress normal output",
"t n\tread timeout is (n) milliseconds [" LITERAL (CHANNEL_FOREVER) "]",
"v\tverbose messages on stdout",
(char const *) (0)
};
signed c;
channel.type = EFEU_ETHERTYPE;
channel.timeout = CHANNEL_FOREVER;
if (getenv (EFEU_INTERFACE))
{
#if defined (WINPCAP) || defined (LIBPCAP)
channel.ifindex = atoi (getenv (EFEU_INTERFACE));
#else
channel.ifname = strdup (getenv (EFEU_INTERFACE));
#endif
}
optind = 1;
while ((c = getoptv (argc, argv, optv)) != -1)
{
switch (c)
{
case 'e':
channel.type = (uint16_t)(basespec (optarg, 16, sizeof (channel.type)));
break;
case 'i':
#if defined (WINPCAP) || defined (LIBPCAP)
channel.ifindex = atoi (optarg);
#else
channel.ifname = optarg;
#endif
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;
default:
break;
}
}
argc -= optind;
argv += optind;
if (argc)
{
error (1, ECANCELED, ERROR_TOOMANY);
}
openchannel (&channel);
while ((length = readpacket (&channel, &frame, sizeof (frame))) > 0)
{
memswap (&frame.frame_dhost, &frame.frame_shost, sizeof (frame.frame_dhost));
if (sendpacket (&channel, &frame, length) != length)
{
error (1, errno, CHANNEL_CANTSEND);
}
}
closechannel (&channel);
return (0);
}
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