/*
* IFCONFIG Command Implmentation
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <rtems.h>
#include <rtems/rtems_bsdnet.h>
#include <rtems/shell.h>
#include "internal.h"
static const char IFCONFIG_USAGE[] =
"ifconfig [iface]\n"
"ifconfig iface options | addr\n"
" iface: name of the interface\n"
" options: iface \n"
" up: bring the interface up\n"
" down: take the interface down\n"
" netmask addr: network mask\n"
" broadcast addr: boardcast address\n"
" pointopoint addr: destination address for a PTP link\n"
"\n"
" addr: IP address";
static int rtems_shell_main_ifconfig(
int argc,
char *argv[]
)
{
struct sockaddr_in ipaddr;
struct sockaddr_in dstaddr;
struct sockaddr_in netmask;
struct sockaddr_in broadcast;
char *iface = NULL;
int f_ip = 0;
int f_ptp = 0;
int f_netmask = 0;
int f_up = 0;
int f_down = 0;
int f_bcast = 0;
int f_usage = 0;
int cur_idx;
int rc;
int flags;
memset(&ipaddr, 0, sizeof(ipaddr));
memset(&dstaddr, 0, sizeof(dstaddr));
memset(&netmask, 0, sizeof(netmask));
memset(&broadcast, 0, sizeof(broadcast));
ipaddr.sin_len = sizeof(ipaddr);
ipaddr.sin_family = AF_INET;
dstaddr.sin_len = sizeof(dstaddr);
dstaddr.sin_family = AF_INET;
netmask.sin_len = sizeof(netmask);
netmask.sin_family = AF_INET;
broadcast.sin_len = sizeof(broadcast);
broadcast.sin_family = AF_INET;
cur_idx = 0;
if (argc <= 1) {
/* display all interfaces */
iface = NULL;
cur_idx += 1;
} else {
if ( 0 == strcmp( "--help", argv[1] ) ) {
f_usage = 1;
cur_idx += 2;
} else if ( 0 == strcmp( "-help", argv[1] ) ) {
f_usage = 1;
cur_idx += 2;
} else {
iface = argv[1];
if ( argc >= 3 ) {
if (isdigit((unsigned char)*argv[2])) {
if (inet_pton(AF_INET, argv[2], &ipaddr.sin_addr) < 0) {
printf("bad ip address: %s\n", argv[2]);
return 0;
}
f_ip = 1;
cur_idx += 3;
} else {
cur_idx += 2;
}
} else {
cur_idx += 2;
}
}
}
if ((f_down !=0) && (f_ip != 0)) {
f_up = 1;
}
while(argc > cur_idx) {
if (strcmp(argv[cur_idx], "up") == 0) {
f_up = 1;
if (f_down != 0) {
printf("Can't make interface up and down\n");
return -1;
}
} else if(strcmp(argv[cur_idx], "down") == 0) {
f_down = 1;
if (f_up != 0) {
printf("Can't make interface up and down\n");
return -1;
}
} else if(strcmp(argv[cur_idx], "netmask") == 0) {
if ((cur_idx + 1) >= argc) {
printf("No netmask address\n");
return -1;
}
if (inet_pton(AF_INET, argv[cur_idx+1], &netmask.sin_addr) < 0) {
printf("bad netmask: %s\n", argv[cur_idx]);
return -1;
}
f_netmask = 1;
cur_idx += 1;
} else if(strcmp(argv[cur_idx], "broadcast") == 0) {
if ((cur_idx + 1) >= argc) {
printf("No broadcast address\n");
return -1;
}
if (inet_pton(AF_INET, argv[cur_idx+1], &broadcast.sin_addr) < 0) {
printf("bad broadcast: %s\n", argv[cur_idx]);
return -1;
}
f_bcast = 1;
cur_idx += 1;
} else if(strcmp(argv[cur_idx], "pointopoint") == 0) {
if ((cur_idx + 1) >= argc) {
printf("No pointopoint address\n");
return -1;
}
if (inet_pton(AF_INET, argv[cur_idx+1], &dstaddr.sin_addr) < 0) {
printf("bad pointopoint: %s\n", argv[cur_idx]);
return -1;
}
f_ptp = 1;
cur_idx += 1;
} else {
printf("Bad parameter: %s\n", argv[cur_idx]);
return -1;
}
cur_idx += 1;
}
printf("ifconfig ");
if (iface != NULL) {
printf("%s ", iface);
if (f_ip != 0) {
char str[256];
inet_ntop(AF_INET, &ipaddr.sin_addr, str, 256);
printf("%s ", str);
}
if (f_netmask != 0) {
char str[256];
inet_ntop(AF_INET, &netmask.sin_addr, str, 256);
printf("netmask %s ", str);
}
if (f_bcast != 0) {
char str[256];
inet_ntop(AF_INET, &broadcast.sin_addr, str, 256);
printf("broadcast %s ", str);
}
if (f_ptp != 0) {
char str[256];
inet_ntop(AF_INET, &dstaddr.sin_addr, str, 256);
printf("pointopoint %s ", str);
}
if (f_up != 0) {
printf("up\n");
} else if (f_down != 0) {
printf("down\n");
} else {
printf("\n");
}
} else if (f_usage != 0) {
printf ( "\n" );
printf ( IFCONFIG_USAGE );
}
if ( ! f_usage ) {
if ((iface == NULL) || ((f_ip == 0) && (f_down == 0) && (f_up == 0))) {
rtems_bsdnet_show_if_stats();
return 0;
}
}
flags = 0;
if (f_netmask) {
rc = rtems_bsdnet_ifconfig(iface, SIOCSIFNETMASK, &netmask);
if (rc < 0) {
printf("Could not set netmask: %s\n", strerror(errno));
return -1;
}
}
if (f_bcast) {
rc = rtems_bsdnet_ifconfig(iface, SIOCSIFBRDADDR, &broadcast);
if (rc < 0) {
printf("Could not set broadcast: %s\n", strerror(errno));
return -1;
}
}
if (f_ptp) {
rc = rtems_bsdnet_ifconfig(iface, SIOCSIFDSTADDR, &dstaddr);
if (rc < 0) {
printf("Could not set destination address: %s\n", strerror(errno));
return -1;
}
flags |= IFF_POINTOPOINT;
}
/* This must come _after_ setting the netmask, broadcast addresses */
if (f_ip) {
rc = rtems_bsdnet_ifconfig(iface, SIOCSIFADDR, &ipaddr);
if (rc < 0) {
printf("Could not set IP address: %s\n", strerror(errno));
return -1;
}
}
if (f_up != 0) {
flags |= IFF_UP;
}
if ( ! f_usage ) {
rc = rtems_bsdnet_ifconfig(iface, SIOCSIFFLAGS, &flags);
if (rc < 0) {
printf("Could not set interface flags: %s\n", strerror(errno));
return -1;
}
}
return 0;
}
rtems_shell_cmd_t rtems_shell_IFCONFIG_Command = {
"ifconfig", /* name */
IFCONFIG_USAGE, /* usage */
"network", /* topic */
rtems_shell_main_ifconfig, /* command */
NULL, /* alias */
NULL /* next */
};
