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#include <stdio.h>
#include <string.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "quicktun.h"
void usage()
{
fputs("Usage: qtctl add [ dev NAME ] [ mode { ethernet | ip } ]\n"
" [ local_address ADDRESS ] [ local_port PORT ]\n"
" [ remote_address ADDRESS ] [ remote_port PORT ]\n"
" [ remote_float ]\n"
" qtctl del dev NAME\n", stderr);
exit(2);
}
void add(int argc, char *argv[], struct nl_handle *sock, int family)
{
struct nl_msg *msg;
struct nl_cb *cb;
int p = 1;
uint16_t mode = QUICKTUN_MODE_ETHERNET;
char *tmp_charp;
struct in_addr tmp_addr;
unsigned long tmp_ul;
msg = nlmsg_alloc();
genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_ECHO, QUICKTUN_CMD_CREATE_DEVICE, 1);
while ((++p) < argc) {
if (!strcmp(argv[p], "dev")) {
if ((++p) >= argc)
usage();
tmp_charp = strndup(argv[p], IFNAMSIZ - 1);
nla_put_string(msg, QUICKTUN_A_IFNAME, tmp_charp);
free(tmp_charp);
}
else if (!strcmp(argv[p], "mode")) {
if ((++p) >= argc)
usage();
if (!strcmp(argv[p], "ethernet"))
mode = QUICKTUN_MODE_ETHERNET;
else if (!strcmp(argv[p], "ip"))
mode = QUICKTUN_MODE_IP;
else
usage();
}
else if (!strcmp(argv[p], "local_address")) {
if ((++p) >= argc)
usage();
if (!(inet_aton(argv[p], &tmp_addr)))
usage();
nla_put_u32(msg, QUICKTUN_A_LOCAL_ADDRESS, tmp_addr.s_addr);
}
else if (!strcmp(argv[p], "local_port")) {
if ((++p) >= argc)
usage();
tmp_ul = strtoul(argv[p], &tmp_charp, 10);
if (*tmp_charp)
usage();
nla_put_u16(msg, QUICKTUN_A_LOCAL_PORT, htons((short)tmp_ul));
}
else if (!strcmp(argv[p], "remote_address")) {
if ((++p) >= argc)
usage();
if (!(inet_aton(argv[p], &tmp_addr)))
usage();
nla_put_u32(msg, QUICKTUN_A_REMOTE_ADDRESS, tmp_addr.s_addr);
}
else if (!strcmp(argv[p], "remote_port")) {
if ((++p) >= argc)
usage();
tmp_ul = strtoul(argv[p], &tmp_charp, 10);
if (*tmp_charp)
usage();
nla_put_u16(msg, QUICKTUN_A_REMOTE_PORT, htons((short)tmp_ul));
}
else if (!strcmp(argv[p], "remote_float")) {
nla_put_flag(msg, QUICKTUN_A_REMOTE_FLOAT);
}
else
usage();
}
nla_put_u16(msg, QUICKTUN_A_MODE, mode);
nl_send_auto_complete(sock, msg);
nlmsg_free(msg);
cb = nl_cb_alloc(NL_CB_DEFAULT);
nl_cb_err(cb, NL_CB_DEBUG, NULL, NULL);
nl_recvmsgs(sock, cb);
}
void del(int argc, char *argv[], struct nl_handle *sock, int family)
{
struct nl_msg *msg;
struct nl_cb *cb;
int p = 1;
char *tmp_charp;
int has_dev = 0;
msg = nlmsg_alloc();
genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_ECHO, QUICKTUN_CMD_DELETE_DEVICE, 1);
while ((++p) < argc) {
if (!strcmp(argv[p], "dev")) {
if ((++p) >= argc)
usage();
if (has_dev)
usage();
tmp_charp = strndup(argv[p], IFNAMSIZ - 1);
nla_put_string(msg, QUICKTUN_A_IFNAME, tmp_charp);
free(tmp_charp);
has_dev = 1;
}
}
if (!has_dev)
usage();
nl_send_auto_complete(sock, msg);
nlmsg_free(msg);
cb = nl_cb_alloc(NL_CB_DEFAULT);
nl_cb_err(cb, NL_CB_DEBUG, NULL, NULL);
nl_recvmsgs(sock, cb);
}
int main(int argc, char *argv[])
{
struct nl_handle *sock;
int family;
sock = nl_handle_alloc();
genl_connect(sock);
family = genl_ctrl_resolve(sock, "quicktun");
if (argc < 2)
usage();
if (!strcmp(argv[1], "add"))
add(argc, argv, sock, family);
else if (!strcmp(argv[1], "del"))
del(argc, argv, sock, family);
else
usage();
return 0;
}
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