File Coverage

send_packet_linux.c

Criterion	Covered	Total	%
statement	9	16	56.2
branch	4	8	50.0
condition			n/a
subroutine			n/a
pod			n/a
total	13	24	54.1

/*
Perl ARP Extension
Send the packet
Linux code

Programmed by Bastian Ballmann
Last update: 11.05.2022

This program is free software; you can redistribute
it and/or modify it under the terms of the
GNU General Public License version 2 as published
by the Free Software Foundation.

This program is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
*/

#include
#include
#include
#include
#include
#include
#include
#include "arp.h"

int send_packet_linux(const char *dev, u_char *packet, u_int packetsize)
{
  struct sockaddr addr;
  int sock;

  if(strlen(dev) == 0)
  {
    printf("dev is undefined. Terminating.\n");
    return 0;
  }

  if(packetsize == 0)
  {
    printf("packetsize is zero. Terminating.\n");
    return 0;
  }

  // Create socket descriptor
  if( ( sock = socket(AF_PACKET, SOCK_PACKET, htons(ETH_P_ALL))) < 0 )
  {
    perror("socket");
    return 0;
  }

  // Set dev and send the packet
  strncpy(addr.sa_data, dev, sizeof(addr.sa_data));

  if( (sendto(sock, packet, packetsize, 0, &addr, sizeof(struct sockaddr))) < 0 )
  {
    perror("send");
    return 0;
  }

  close(sock);
  return 1;
}