int main( int argc, char **argv )
{
uint8 anAddress[4];
uint8 anMask[4];
uint8 anGateway[4] = { 0, 0, 0, 0 };
const char *pzGateway = NULL, *pzProgram;
const char *pzCommand, *pzNetAddr, *pzNetMask;
struct rtentry sRoute;
bool bLong = false;
bool bNetSet = false, bMaskSet = false, bGwSet = false;
int c;
if ( (pzProgram = strrchr( *argv, '/' )) != NULL )
++pzProgram;
else
pzProgram = *argv;
memset( &sRoute, 0, sizeof( sRoute ) );
sRoute.rt_metric = 0;
sRoute.rt_flags = RTF_UP | RTF_STATIC; /* Not necessary */
while ( ( c = getopt_long( argc, argv, "hlqvi:g:", long_opts, ( int * )0 ) ) != EOF )
{
switch ( c )
{
case 0:
break;
case 'l':
bLong = true;
break;
case 'v':
g_nShowVersion = true;
break;
case 'h':
g_nShowHelp = true;
break;
default:
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
}
argc -= optind;
argv += optind;
if ( (pzCommand = *argv++) == NULL )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
/* Check command is valid */
if ( strcmp( pzCommand, "list" ) == 0 )
{
list_routes( bLong );
return ( EXIT_SUCCESS );
}
else if ( strcmp( pzCommand, "add" ) != 0 && strcmp( pzCommand, "del" ) != 0 )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
/* Add or delete a route */
/* Look for address parameter */
while ( *argv )
{
const char *pzInstruction = *argv++;
char *pzArg = *argv++;
if ( pzArg == NULL )
{
/* No argument */
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
if ( strcmp( pzInstruction, "net" ) == 0 )
{
char *pzStr;
if( bNetSet == true )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
if( strcmp( pzArg, "default" ) == 0 )
{
bNetSet = true;
bMaskSet = true;
}
else
{
if( (pzStr = strchr( pzArg, '/' )) != NULL )
{
/* CIDR notation in address parameter */
int nBits;
uint32 nIpAddr = 0xFFFFFFFF;
*pzStr++ = 0;
if( (nBits = atoi( pzStr )) < 32 )
nIpAddr <<= (32 - nBits);
*((uint32 *)&((struct sockaddr_in *)&sRoute.rt_genmask)->sin_addr) = htonl( nIpAddr );
bMaskSet = true;
}
/* Interpret as IP address */
parse_ipaddress( (uint8*)&((struct sockaddr_in *)&sRoute.rt_dst)->sin_addr, pzArg );
bNetSet = true;
}
}
else if ( strcmp( pzInstruction, "mask" ) == 0 )
{
if( bMaskSet == true )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
parse_ipaddress( (uint8*)&((struct sockaddr_in *)&sRoute.rt_genmask)->sin_addr, pzArg );
bMaskSet = true;
}
else if ( strcmp( pzInstruction, "gw" ) == 0 )
{
if( bGwSet == true )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
parse_ipaddress( (uint8*)&((struct sockaddr_in *)&sRoute.rt_gateway)->sin_addr, pzArg );
sRoute.rt_flags |= RTF_GATEWAY;
bGwSet = true;
}
else
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
}
/* Check for required arguments */
if( !bNetSet || !bMaskSet )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
/* Perform action */
if ( strcmp( pzCommand, "add" ) == 0 )
{
add_route( &sRoute );
}
else if ( strcmp( pzCommand, "del" ) == 0 )
{
del_route( &sRoute );
}
return ( EXIT_SUCCESS );
}
int
main(int argc, char** argv)
{
if (argc > 1 && (!strcmp(argv[1], "--help") || !strcmp(argv[1], "-h")))
usage(0);
int32 mode = RTM_LIST;
if (argc > 1) {
if (!strcmp(argv[1], "delete")
|| !strcmp(argv[1], "del")
|| !strcmp(argv[1], "-d")) {
// delete route
if (argc < 3)
usage(1);
mode = RTM_DELETE;
} else if (!strcmp(argv[1], "add")
|| !strcmp(argv[1], "-a")) {
// add route
if (argc < 3)
usage(1);
mode = RTM_ADD;
} else if (!strcmp(argv[1], "get")) {
// get route for destination
if (argc < 3)
usage(1);
mode = RTM_GET;
}
}
int32 i = 2;
int32 interfaceIndex = i;
bool familySpecified = false;
int32 familyIndex = 0;
const char *interface = NULL;
sockaddr_storage destination;
sockaddr_storage mask;
sockaddr_storage gateway;
bool hasDestination = false, hasGateway = false, hasMask = false;
bool defaultRoute = false;
route_entry route;
memset(&route, 0, sizeof(route_entry));
while (i < argc && i < 5) {
// try to parse address family
if (i <= 3 && familyIndex == -1 && get_address_family(argv[i], familyIndex)) {
familySpecified = true;
if (i == 2)
interfaceIndex = -1;
}
if (!strcmp(argv[i], "default")) {
defaultRoute = true;
route.flags = RTF_DEFAULT;
i++;
break;
} else if (parse_address(familyIndex, argv[i], destination)) {
hasDestination = true;
i++;
break;
}
i++;
}
if (!defaultRoute && !hasDestination && mode != RTM_LIST)
usage(1);
if (i == 3)
interfaceIndex = -1;
if (interfaceIndex != -1 && interfaceIndex < argc)
interface = argv[interfaceIndex];
if (i < argc && parse_address(familyIndex, argv[i], mask)) {
hasMask = true;
i++;
}
// parse options and flags
while (i < argc) {
if (!strcmp(argv[i], "gw") || !strcmp(argv[i], "gateway")) {
if (!parse_address(familyIndex, argv[i + 1], gateway)) {
fprintf(stderr, "%s: Option 'gw' needs valid address parameter\n",
kProgramName);
exit(1);
}
hasGateway = true;
i++;
} else if (!strcmp(argv[i], "nm") || !strcmp(argv[i], "netmask")) {
if (hasMask) {
fprintf(stderr, "%s: Netmask is specified twice\n",
kProgramName);
exit(1);
}
if (!parse_address(familyIndex, argv[i + 1], mask)) {
fprintf(stderr, "%s: Option 'netmask' needs valid address parameter\n",
kProgramName);
exit(1);
}
hasMask = true;
i++;
} else if (!strcmp(argv[i], "mtu")) {
route.mtu = argv[i + 1] ? strtol(argv[i + 1], NULL, 0) : 0;
if (route.mtu <= 500) {
fprintf(stderr, "%s: Option 'mtu' exptected valid max transfer unit size\n",
kProgramName);
exit(1);
}
i++;
} else if (!strcmp(argv[i], "host")) {
route.flags |= RTF_HOST;
} else if (!strcmp(argv[i], "local")) {
route.flags |= RTF_LOCAL;
} else if (!strcmp(argv[i], "reject")) {
route.flags |= RTF_REJECT;
} else
usage(1);
i++;
}
if (hasDestination)
route.destination = (sockaddr *)&destination;
if (hasMask)
route.mask = (sockaddr *)&mask;
if (hasGateway) {
route.gateway = (sockaddr *)&gateway;
route.flags |= RTF_GATEWAY;
}
// we need a socket to talk to the networking stack
int socket = ::socket(kFamilies[familyIndex].family, SOCK_DGRAM, 0);
if (socket < 0) {
fprintf(stderr, "%s: The requested address family is not available.\n",
kProgramName);
return 1;
}
switch (mode) {
case RTM_ADD:
if (interface == NULL) {
fprintf(stderr, "%s: You need to specify an interface when adding a route.\n",
kProgramName);
usage(1);
}
add_route(socket, interface, route);
break;
case RTM_DELETE:
if (interface == NULL) {
fprintf(stderr, "%s: You need to specify an interface when removing a route.\n",
kProgramName);
usage(1);
}
delete_route(socket, interface, route);
break;
case RTM_LIST:
if (familySpecified)
list_routes(socket, interface, route);
else {
for (int32 i = 0; kFamilies[i].family >= 0; i++) {
int socket = ::socket(kFamilies[familyIndex].family, SOCK_DGRAM, 0);
if (socket < 0)
continue;
list_routes(socket, interface, route);
close(socket);
}
}
break;
case RTM_GET:
get_route(socket, route);
break;
}
close(socket);
return 0;
}