/*******************************************************************************
@purpose: START POINT
*******************************************************************************/
int main(int argc, char *argv[])
{
switch(getStartupParams(argc, argv))
{
case SHOW_INTERFACES:
printInterfaces();
break;
case SERVER_START:
InitServer();
break;
/*case SERVER_STOP: //TODO
break;
case SERVER_RESTART:
break;*/
case CHECK_CONFIG:
checkConfiguration();
break;
case SHOW_HELP:
case SHOW_HELP_LONG:
default:
printf("\tUsage:\n"
"\t--i get available interfaces\n"
"\t--t check configuration\n"
"\t--k to start webserver\n"
"\t--h print this text\n");
return 0;
}
}
/*
* Handler for the interface configuration command:
* ifconfig add eth1 -socket socketfile -addr IP_addr -hwaddr MAC [-gateway GW] [-mtu N]
* ifconfig add tap0 -device dev_location -addr IP_addr -hwaddr MAC
* ifconfig add tun0 -dstip dst_ip -dstport portnum -addr IP_addr -hwaddr MAC
* ifconfig del eth0|tap0
* ifconfig show [brief|verbose]
* ifconfig up eth0|tap0
* ifconfig down eth0|tap0
* ifconfig mod eth0 (-gateway GW | -mtu N)
*/
void ifconfigCmd()
{
char *next_tok;
interface_t *iface;
char dev_name[MAX_DNAME_LEN], con_sock[MAX_NAME_LEN], dev_type[MAX_NAME_LEN];
uchar mac_addr[6], ip_addr[4], gw_addr[4], dst_ip[4];
int mtu, interface, mode;
short int dst_port;
// set default values for optional parameters
bzero(gw_addr, 4);
mtu = DEFAULT_MTU;
mode = NORMAL_LISTING;
// we have already matched ifconfig... now parsing rest of the parameters.
next_tok = strtok(NULL, " \n");
if (next_tok == NULL)
{
printf("[ifconfigCmd]:: missing action parameter.. type help ifconfig for usage.\n");
return;
}
if (!strcmp(next_tok, "add"))
{
next_tok = strtok(NULL, " \n");
if ( (next_tok == NULL) || (findDeviceDriver(next_tok) == NULL) )
{
printf("ifconfig:: missing or invalid interface spec ..\n");
return;
}
strcpy(dev_name, next_tok);
sscanf(dev_name, "%[a-z]", dev_type);
interface = gAtoi(dev_name);
if ((interface == 0) && (strcmp(dev_type, "eth") == 0))
{
printf("[ifconfigCmd]:: device number 0 is reserved for tap - start from 1\n");
return;
}
if (strcmp(dev_type, "eth") == 0)
{
GET_NEXT_PARAMETER("-socket", "ifconfig:: missing -socket spec ..");
strcpy(con_sock, next_tok);
} else if(strcmp(dev_type, "tun") == 0)
{
GET_NEXT_PARAMETER("-dstip", "ifconfig:: missing -dstip spec ..");
Dot2IP(next_tok, dst_ip);
GET_NEXT_PARAMETER("-dstport", "ifconfig:: missing -dstport spec ..");
dst_port = (short int)atoi(next_tok);
}
GET_NEXT_PARAMETER("-addr", "ifconfig:: missing -addr spec ..");
Dot2IP(next_tok, ip_addr);
GET_NEXT_PARAMETER("-hwaddr", "ifconfig:: missing -hwaddr spec ..");
Colon2MAC(next_tok, mac_addr);
while ((next_tok = strtok(NULL, " \n")) != NULL)
if (!strcmp("-gateway", next_tok))
{
next_tok = strtok(NULL, " \n");
Dot2IP(next_tok, gw_addr);
} else if (!strcmp("-mtu", next_tok))
{
next_tok = strtok(NULL, " \n");
mtu = atoi(next_tok);
}
if (strcmp(dev_type, "eth") == 0)
iface = GNETMakeEthInterface(con_sock, dev_name, mac_addr, ip_addr, mtu, 0);
else if (strcmp(dev_type, "tap") == 0)
iface = GNETMakeTapInterface(dev_name, mac_addr, ip_addr);
else if (strcmp(dev_type, "tun") == 0)
iface = GNETMakeTunInterface(dev_name, mac_addr, ip_addr, dst_ip, dst_port);
else {
printf("[ifconfigCmd]:: Unkown device type %s\n", dev_type);
return;
}
if (iface != NULL)
{
verbose(2, "[configureInterfaces]:: Inserting the definition in the interface table ");
GNETInsertInterface(iface);
addMTUEntry(MTU_tbl, iface->interface_id, iface->device_mtu, iface->ip_addr);
// for tap0 interface the MTU value cannot be changed. should we allow change?
}
}
else if (!strcmp(next_tok, "del"))
{
GET_THIS_OR_THIS_PARAMETER("eth", "tap", "ifconfig:: missing interface spec ..");
strcpy(dev_name, next_tok);
interface = gAtoi(next_tok);
destroyInterfaceByIndex(interface);
deleteMTUEntry(interface);
}
else if (!strcmp(next_tok, "up"))
{
GET_THIS_OR_THIS_PARAMETER("eth", "tap", "ifconfig:: missing interface spec ..");
strcpy(dev_name, next_tok);
interface = gAtoi(next_tok);
upInterface(interface);
}
else if (!strcmp(next_tok, "down"))
{
GET_THIS_OR_THIS_PARAMETER("eth", "tap", "ifconfig:: missing interface spec ..");
strcpy(dev_name, next_tok);
interface = gAtoi(next_tok);
downInterface(interface);
}
else if (!strcmp(next_tok, "mod"))
{
GET_THIS_PARAMETER("eth", "ifconfig:: missing interface spec ..");
strcpy(dev_name, next_tok);
interface = gAtoi(next_tok);
while ((next_tok = strtok(NULL, " \n")) != NULL)
if (!strcmp("-gateway", next_tok))
{
next_tok = strtok(NULL, " \n");
strcpy(gw_addr, next_tok);
} else if (!strcmp("-mtu", next_tok))
{
next_tok = strtok(NULL, " \n");
mtu = atoi(next_tok);
}
changeInterfaceMTU(interface, mtu);
}
else if (!strcmp(next_tok, "show"))
{
if ((next_tok = strtok(NULL, " \n")) != NULL)
{
if (strstr(next_tok, "bri") != NULL)
mode = BRIEF_LISTING;
else if (strstr(next_tok, "verb") != NULL)
mode = VERBOSE_LISTING;
} else
mode = NORMAL_LISTING;
printInterfaces(mode);
}
return;
}