/*
* Mausezahn - A fast versatile traffic generator
* Copyright (C) 2008 Herbert Haas
*
* 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.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, see http://www.gnu.org/licenses/gpl-2.0.html
*
*/
#include "mz.h"
#include "cli.h"
int cmd_set(struct cli_def *cli, const char *command, char *argv[], int argc)
{
libnet_t *l;
unsigned int time_factor;
int i, cnt, found_dev;
char *dum;
unsigned char *x;
if (argc < 2) {
cli_print(cli, "Specify a variable to set:\r\n");
cli_print(cli, "device specify the primary network device\r");
cli_print(cli, "NOTE: The following options are non-MOPS and deprecated:\n");
cli_print(cli, "a|sa specify a MAC source address\r");
cli_print(cli, "b|da specify a MAC destination address\r");
cli_print(cli, "A|SA specify a IP source address\r");
cli_print(cli, "B|DA specify a IP destination address\r");
cli_print(cli, "c|count specify a packet count value\r");
cli_print(cli, "d|delay specify an interpacket delay (usec, msec, or sec)\r");
cli_print(cli, "P|payload specify an ASCII payload\r");
cli_print(cli, "H|hexload specify a hexadecimal payload\r");
cli_print(cli, "p|padding specify a number of padding bytes (total for raw, added otherwise)\r");
cli_print(cli, "Q|vlan specify one ore more 802.1Q vlan tags\r");
cli_print(cli, "M|mpls specify one ore more MPLS labels\r");
cli_print(cli, "\n");
return CLI_OK;
}
// set primary device
if (strncmp(argv[0], "device", 2)==0)
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify the primary network device (use 'show dev' for a list)\n");
}
else
{
if (strlen(argv[1]))
{
found_dev = 0;
for (i=0; i<device_list_entries; i++)
{
if (strncmp(device_list[i].dev, argv[1], 16)==0)
{
found_dev=1;
break;
}
}
if (found_dev)
{
strncpy(tx.device, argv[1], 16);
}
else
cli_print(cli, "Unknown device, will stick on %s\n", tx.device);
}
else
cli_print(cli, "Nothing specified, will stick on %s\n", tx.device);
}
}
// set source MAC address
else if ( (strncmp(argv[0], "a", 10)==0) ||
(strncmp(argv[0], "sa", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify a source MAC address (format: XX:XX:XX:XX:XX:XX)\n");
}
else
{
strncpy(tx.eth_src_txt, argv[1], 32);
if (check_eth_mac_txt(ETH_SRC))
{
cli_print(cli, "Invalid MAC address! Format: XX:XX:XX:XX:XX:XX\r");
cli_print(cli, "Current setting: sa = %02x:%02x:%02x:%02x:%02x:%02x\r",
tx.eth_src[0], tx.eth_src[1], tx.eth_src[2],
tx.eth_src[3], tx.eth_src[4], tx.eth_src[5]);
}
tx.packet_mode = 0;
}
}
// set destination MAC address
else if ( (strncmp(argv[0], "b", 10)==0) ||
(strncmp(argv[0], "da", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify a destination MAC address (format: XX:XX:XX:XX:XX:XX)\n");
}
else
{
strncpy(tx.eth_dst_txt, argv[1], 32);
if (check_eth_mac_txt(ETH_DST))
{
cli_print(cli, "Invalid MAC address! Format: XX:XX:XX:XX:XX:XX\r");
cli_print(cli, "Current setting: da = %02x:%02x:%02x:%02x:%02x:%02x\r",
tx.eth_dst[0], tx.eth_dst[1], tx.eth_dst[2],
tx.eth_dst[3], tx.eth_dst[4], tx.eth_dst[5]);
}
tx.packet_mode = 0;
}
}
// set source IP address
else if ( (strncmp(argv[0], "A", 10)==0) ||
(strncmp(argv[0], "SA", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify a source IP address, a FQDN, 'rand', or a range\n");
}
else
{
if (strcmp(argv[1], "rand") == 0)
{
tx.ip_src_rand = 1;
tx.ip_src_h = (u_int32_t) ( ((float) rand()/RAND_MAX)*0xE0000000); //this is 224.0.0.0
// TODO: mops_hton32 (&tx.ip_src_h, &tx.ip_src);
}
else if (get_ip_range_src(argv[1])) // returns 1 when no range has been specified
{
l = libnet_init (LIBNET_LINK_ADV, tx.device, NULL);
if (l == NULL)
{
cli_print(cli, "Error: could not access the network device!\n");
return CLI_OK;
}
// name2addr4 accepts a DOTTED DECIMAL ADDRESS or a FQDN:
tx.ip_src = libnet_name2addr4 (l, argv[1], LIBNET_RESOLVE);
x = (unsigned char *) &tx.ip_src;
cli_print(cli, "Set source IP address to %i.%i.%i.%i\n",
*x,*(x+1),*(x+2),*(x+3));
// TODO: mops_hton32 (&tx.ip_src, &tx.ip_src_h);
libnet_destroy(l);
}
}
}
// set destination IP address
else if ( (strncmp(argv[0], "B", 10)==0) ||
(strncmp(argv[0], "DA", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify a destination IP address, a FQDN, or a range\n");
}
else
{
if (get_ip_range_dst(argv[1])) // returns 1 when no range has been specified
{
l = libnet_init (LIBNET_LINK_ADV, tx.device, NULL);
if (l == NULL)
{
cli_print(cli, "Error: could not access the network device!\n");
return CLI_OK;
}
// name2addr4 accepts a DOTTED DECIMAL ADDRESS or a FQDN:
tx.ip_dst = libnet_name2addr4 (l, argv[1], LIBNET_RESOLVE);
x = (unsigned char *) &tx.ip_src;
cli_print(cli, "Set destination IP address to %i.%i.%i.%i\n",
*x,*(x+1),*(x+2),*(x+3));
// TODO: mops_hton32 (&tx.ip_dst, &tx.ip_dst_h);
libnet_destroy(l);
}
}
}
// set packet count
else if ( (strncmp(argv[0], "c", 10)==0) ||
(strncmp(argv[0], "count", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify a packet count value\n");
}
else
{
cnt = (unsigned int) str2int (argv[1]);
if (cnt==0)
{
cli_print(cli, "Warning: A packet count of zero means an infinite number of packets.\r");
cli_print(cli, "Infinite packets are only supported via MOPS (use the 'packet' command\r");
cli_print(cli, "in global configuration mode) or when running Mausezahn from the shell.\n");
cli_print(cli, "Note: The count value has NOT been changed.\n");
}
else
{
tx.count = cnt;
}
}
}
// set interpacket delay
else if ( (strncmp(argv[0], "d", 10)==0) ||
(strncmp(argv[0], "delay", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify an interpacket delay (usec, msec, or sec)\n");
}
else
{
// determine whether seconds or msecs are used
// default is usec!!!
time_factor=1;
if (exists(argv[1],"s") || exists(argv[1],"sec")) time_factor=1000000;
if (exists(argv[1],"m") || exists(argv[1],"msec")) time_factor=1000;
dum = strtok(argv[1],"ms");
tx.delay = strtol(dum, (char **)NULL, 10) * time_factor;
if ((errno == ERANGE && (tx.delay == LONG_MAX || tx.delay == LONG_MIN))
|| (errno != 0 && tx.delay == 0))
{
cli_print(cli, "Value out of range!\n");
}
if (tx.delay<0) tx.delay=0; // no delay
cli_print(cli, "Set interpacket delay to %u usec\n", tx.delay);
}
}
// set ASCII payload
else if ( (strncmp(argv[0], "P", 10)==0) ||
(strncmp(argv[0], "payload", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify an ASCII payload enclosed in quotes\n");
}
else
{
strncpy((char *)tx.ascii_payload, argv[1], MAX_PAYLOAD_SIZE);
tx.ascii=1;
}
}
// set HEX payload
else if ( (strncmp(argv[0], "H", 10)==0) ||
(strncmp(argv[0], "hexload", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify a hexadecimal payload (using ':' or '.' as delimiters)\n");
}
else
{
tx.hex_payload_s = str2hex (argv[1], tx.hex_payload, 8192);
if (tx.hex_payload_s==0)
cli_print(cli, "Invalid hexadecimal string. Try something like aa:bb:cc:45:99:00:de:ad:be:ef: ...\n");
}
}
// set MPLS labels
else if ( (strncmp(argv[0], "M", 10)==0) ||
(strncmp(argv[0], "mpls", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify one or more MPLS labels\n");
}
else
{
if (strlen(argv[1])) // TODO: Better verification of 802.1Q syntax
{
strncpy(tx.mpls_txt, argv[1], 128);
tx.mpls=1;
}
}
}
// set 802.1Q tags
else if ( (strncmp(argv[0], "Q", 10)==0) ||
(strncmp(argv[0], "vlan", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify one or more 802.1Q VLAN tags (and optionally 801.1P values)\n");
}
else
{
if (strlen(argv[1])) // TODO: Better verification of 802.1Q syntax
{
strncpy(tx.dot1Q_txt, argv[1], 32);
tx.dot1Q=1;
}
}
}
// set padding
else if ( (strncmp(argv[0], "p", 10)==0) ||
(strncmp(argv[0], "padding", 10)==0) )
{
if (strncmp(argv[1],"?",1)==0)
{
cli_print(cli,"Specify a number of padding bytes\n");
}
else
{
tx.padding = (unsigned int) str2int(argv[1]);
if (tx.padding > MAX_PAYLOAD_SIZE)
{
cli_print(cli, "Note: Padding too big! However, let's try and see what happens...\n");
}
}
}
// DEFAULT ANSWER:
else
{
cli_print(cli, "Unknown variable '%s'\n",argv[0]);
}
return CLI_OK;
}