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#include <errno.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>
#include "nl80211.h"
#include "iw.h"
static int iw_conn(struct nl80211_state *state, struct nl_cb *cb,
struct nl_msg *msg, int argc, char **argv)
{
char *end;
unsigned char bssid[6];
int freq;
if (argc < 1)
return 1;
/* SSID */
NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]);
argv++;
argc--;
/* freq */
if (argc) {
freq = strtoul(argv[0], &end, 10);
if (*end == '\0') {
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
argv++;
argc--;
}
}
/* bssid */
if (argc) {
if (mac_addr_a2n(bssid, argv[0]) == 0) {
NLA_PUT(msg, NL80211_ATTR_MAC, 6, bssid);
argv++;
argc--;
}
}
if (!argc)
return 0;
if (strcmp(*argv, "key") != 0 && strcmp(*argv, "keys") != 0)
return 1;
argv++;
argc--;
return parse_keys(msg, argv, argc);
nla_put_failure:
return -ENOSPC;
}
static int disconnect(struct nl80211_state *state,
struct nl_cb *cb,
struct nl_msg *msg,
int argc, char **argv)
{
return 0;
}
TOPLEVEL(disconnect, NULL,
NL80211_CMD_DISCONNECT, 0, CIB_NETDEV, disconnect,
"Disconnect from the current network.");
static int iw_connect(struct nl80211_state *state, struct nl_cb *cb,
struct nl_msg *msg, int argc, char **argv)
{
char **conn_argv, *dev = argv[0];
static const __u32 cmds[] = {
NL80211_CMD_CONNECT,
};
struct print_event_args printargs = { };
int conn_argc, err;
bool wait = false;
int i;
/* strip "wlan0 connect" */
argc -= 2;
argv += 2;
/* check -w */
if (argc && strcmp(argv[0], "-w") == 0) {
wait = true;
argc--;
argv++;
}
conn_argc = 3 + argc;
conn_argv = calloc(conn_argc, sizeof(*conn_argv));
if (!conn_argv)
return -ENOMEM;
conn_argv[0] = dev;
conn_argv[1] = "connect";
conn_argv[2] = "establish";
for (i = 0; i < argc; i++)
conn_argv[i + 3] = argv[i];
err = handle_cmd(state, II_NETDEV, conn_argc, conn_argv);
free(conn_argv);
if (err)
return err;
if (!wait)
return 0;
/*
* WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION
*
* This code has a bug, which requires creating a separate
* nl80211 socket to fix:
* It is possible for a NL80211_CMD_NEW_SCAN_RESULTS or
* NL80211_CMD_SCAN_ABORTED message to be sent by the kernel
* before (!) we listen to it, because we only start listening
* after we send our scan request.
*
* Doing it the other way around has a race condition as well,
* if you first open the events socket you may get a notification
* for a previous scan.
*
* The only proper way to fix this would be to listen to events
* before sending the command, and for the kernel to send the
* connect request along with the event, so that you can match
* up whether the connect _you_ requested was finished or aborted.
*
* Alas, the kernel doesn't do that (yet).
*/
__listen_events(state, ARRAY_SIZE(cmds), cmds, &printargs);
return 0;
}
TOPLEVEL(connect, "[-w] <SSID> [<freq in MHz>] [<bssid>] [key 0:abcde d:1:6162636465]",
0, 0, CIB_NETDEV, iw_connect,
"Join the network with the given SSID (and frequency, BSSID).\n"
"With -w, wait for the connect to finish or fail.");
HIDDEN(connect, establish, "", NL80211_CMD_CONNECT, 0, CIB_NETDEV, iw_conn);
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