[thirdparty/iw.git] / connect.c

#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_msg *msg, int argc, char **argv,
		   enum id_input id)
{
	char *end;
	unsigned char bssid[6];
	int freq;
	int ret;

	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--;

	ret = parse_keys(msg, &argv, &argc);
	if (ret)
		return ret;

	if (!argc)
		return 0;

	if (!strcmp(*argv, "mfp:req"))
		NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
	else if (!strcmp(*argv, "mfp:opt"))
		NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_OPTIONAL);
	else if (!strcmp(*argv, "mfp:no"))
		NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_NO);
	else
		return -EINVAL;

	return 0;

 nla_put_failure:
	return -ENOSPC;
}

static int disconnect(struct nl80211_state *state,
		      struct nl_msg *msg,
		      int argc, char **argv,
		      enum id_input id)
{
	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_msg *msg, int argc, char **argv,
		      enum id_input id)
{
	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++;
	}

	err = __prepare_listen_events(state);
	if (err)
		return err;

	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, id, 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:
	 *
	 * It is possible for a connect result message from another
	 * connect attempt to be processed here first, because we
	 * start listening to the multicast group before starting
	 * our own connect request, which may succeed but we get a
	 * fail message from a previous attempt that raced with us,
	 * or similar.
	 *
	 * 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 or a cookie 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).
	 */

	__do_listen_events(state, ARRAY_SIZE(cmds), cmds, &printargs);
	return 0;
}
TOPLEVEL(connect, "[-w] <SSID> [<freq in MHz>] [<bssid>] [key 0:abcde d:1:6162636465] [mfp:req/opt/no]",
	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);

static int iw_auth(struct nl80211_state *state,
		   struct nl_msg *msg, int argc, char **argv,
		   enum id_input id)
{
	char *end;
	unsigned char bssid[6];
	int freq;
	bool need_key = false;

	if (argc < 4)
		return 1;

	/* SSID */
	NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]);
	argv++;
	argc--;

	/* bssid */
	if (mac_addr_a2n(bssid, argv[0]) == 0) {
		NLA_PUT(msg, NL80211_ATTR_MAC, 6, bssid);
		argv++;
		argc--;
	} else {
		return 1;
	}

	/* FIXME */
	if (strcmp(argv[0], "open") == 0) {
		NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
			    NL80211_AUTHTYPE_OPEN_SYSTEM);
	} else if (strcmp(argv[0], "shared") == 0) {
		NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
			    NL80211_AUTHTYPE_SHARED_KEY);
		need_key = true;
	} else {
		return 1;
	}
	argv++;
	argc--;

	freq = strtoul(argv[0], &end, 10);
	if (*end == '\0') {
		NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
		argv++;
		argc--;
	} else {
		return 1;
	}

	if (!argc && need_key)
		return 1;
	if (argc && !need_key)
		return 1;
	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;
}

TOPLEVEL(auth, "<SSID> <bssid> <type:open|shared> <freq in MHz> [key 0:abcde d:1:6162636465]",
	 NL80211_CMD_AUTHENTICATE, 0, CIB_NETDEV, iw_auth,
	 "Authenticate with the given network.\n");
Commit	Line	Data
99dde7aa JB	1	#include <errno.h>
	2
	3	#include <netlink/genl/genl.h>
	4	#include <netlink/genl/family.h>
	5	#include <netlink/genl/ctrl.h>
	6	#include <netlink/msg.h>
	7	#include <netlink/attr.h>
	8
	9	#include "nl80211.h"
	10	#include "iw.h"
	11
34b23014	12	static int iw_conn(struct nl80211_state *state,
05514f95 JB	13	struct nl_msg msg, int argc, char *argv,
05514f95 JB	14	enum id_input id)
99dde7aa JB	15	{
99dde7aa JB	16	char *end;
51e9bd80	17	unsigned char bssid[6];
1e03690e	18	int freq;
86dbcee9	19	int ret;
99dde7aa JB	20
	21	if (argc < 1)
	22	return 1;
	23
	24	/* SSID */
	25	NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]);
	26	argv++;
	27	argc--;
	28
	29	/* freq */
	30	if (argc) {
	31	freq = strtoul(argv[0], &end, 10);
	32	if (*end == '\0') {
	33	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
	34	argv++;
	35	argc--;
	36	}
	37	}
	38
	39	/* bssid */
	40	if (argc) {
51e9bd80 JB	41	if (mac_addr_a2n(bssid, argv[0]) == 0) {
	42	NLA_PUT(msg, NL80211_ATTR_MAC, 6, bssid);
	43	argv++;
	44	argc--;
	45	}
99dde7aa JB	46	}
99dde7aa JB	47
1e03690e JB	48	if (!argc)
1e03690e JB	49	return 0;
99dde7aa	50
1e03690e JB	51	if (strcmp(argv, "key") != 0 && strcmp(argv, "keys") != 0)
1e03690e JB	52	return 1;
ded1f078	53
1e03690e JB	54	argv++;
1e03690e JB	55	argc--;
51e9bd80	56
0e39f109	57	ret = parse_keys(msg, &argv, &argc);
86dbcee9 EG	58	if (ret)
	59	return ret;
	60
86dbcee9 EG	61	if (!argc)
	62	return 0;
	63
	64	if (!strcmp(*argv, "mfp:req"))
	65	NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
	66	else if (!strcmp(*argv, "mfp:opt"))
	67	NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_OPTIONAL);
	68	else if (!strcmp(*argv, "mfp:no"))
	69	NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_NO);
	70	else
	71	return -EINVAL;
	72
	73	return 0;
	74
99dde7aa JB	75	nla_put_failure:
	76	return -ENOSPC;
	77	}
	78
	79	static int disconnect(struct nl80211_state *state,
99dde7aa	80	struct nl_msg *msg,
05514f95 JB	81	int argc, char **argv,
05514f95 JB	82	enum id_input id)
99dde7aa JB	83	{
	84	return 0;
	85	}
	86	TOPLEVEL(disconnect, NULL,
	87	NL80211_CMD_DISCONNECT, 0, CIB_NETDEV, disconnect,
	88	"Disconnect from the current network.");
7fabd346	89
34b23014	90	static int iw_connect(struct nl80211_state *state,
05514f95 JB	91	struct nl_msg msg, int argc, char *argv,
05514f95 JB	92	enum id_input id)
7fabd346 JB	93	{
	94	char *conn_argv, dev = argv[0];
	95	static const __u32 cmds[] = {
	96	NL80211_CMD_CONNECT,
	97	};
	98	struct print_event_args printargs = { };
	99	int conn_argc, err;
	100	bool wait = false;
	101	int i;
	102
	103	/* strip "wlan0 connect" */
	104	argc -= 2;
	105	argv += 2;
	106
	107	/* check -w */
	108	if (argc && strcmp(argv[0], "-w") == 0) {
	109	wait = true;
	110	argc--;
	111	argv++;
	112	}
	113
d8d294c4 JL	114	err = __prepare_listen_events(state);
	115	if (err)
	116	return err;
	117
7fabd346 JB	118	conn_argc = 3 + argc;
	119	conn_argv = calloc(conn_argc, sizeof(*conn_argv));
	120	if (!conn_argv)
	121	return -ENOMEM;
ee374e4d	122
7fabd346	123	conn_argv[0] = dev;
4698bfc2	124	conn_argv[1] = "connect";
7fabd346 JB	125	conn_argv[2] = "establish";
	126	for (i = 0; i < argc; i++)
	127	conn_argv[i + 3] = argv[i];
75f4204c	128	err = handle_cmd(state, id, conn_argc, conn_argv);
7fabd346 JB	129	free(conn_argv);
	130	if (err)
	131	return err;
	132
	133	if (!wait)
	134	return 0;
	135
	136	/*
	137	* WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION
	138	*
ee374e4d	139	* This code has a bug:
7fabd346	140	*
ee374e4d JB	141	* It is possible for a connect result message from another
	142	* connect attempt to be processed here first, because we
	143	* start listening to the multicast group before starting
	144	* our own connect request, which may succeed but we get a
	145	* fail message from a previous attempt that raced with us,
	146	* or similar.
7fabd346 JB	147	*
	148	* The only proper way to fix this would be to listen to events
	149	* before sending the command, and for the kernel to send the
ee374e4d JB	150	* connect request or a cookie along with the event, so that you
	151	* can match up whether the connect _you_ requested was finished
	152	* or aborted.
7fabd346 JB	153	*
	154	* Alas, the kernel doesn't do that (yet).
	155	*/
	156
ee374e4d	157	__do_listen_events(state, ARRAY_SIZE(cmds), cmds, &printargs);
7fabd346 JB	158	return 0;
7fabd346 JB	159	}
86dbcee9	160	TOPLEVEL(connect, "[-w] <SSID> [<freq in MHz>] [<bssid>] [key 0:abcde d:1:6162636465] [mfp:req/opt/no]",
7fabd346 JB	161	0, 0, CIB_NETDEV, iw_connect,
	162	"Join the network with the given SSID (and frequency, BSSID).\n"
	163	"With -w, wait for the connect to finish or fail.");
4698bfc2	164	HIDDEN(connect, establish, "", NL80211_CMD_CONNECT, 0, CIB_NETDEV, iw_conn);
5727fe03	165
34b23014	166	static int iw_auth(struct nl80211_state *state,
5727fe03 JB	167	struct nl_msg msg, int argc, char *argv,
	168	enum id_input id)
	169	{
	170	char *end;
	171	unsigned char bssid[6];
	172	int freq;
	173	bool need_key = false;
	174
	175	if (argc < 4)
	176	return 1;
	177
	178	/* SSID */
	179	NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]);
	180	argv++;
	181	argc--;
	182
	183	/* bssid */
	184	if (mac_addr_a2n(bssid, argv[0]) == 0) {
	185	NLA_PUT(msg, NL80211_ATTR_MAC, 6, bssid);
	186	argv++;
	187	argc--;
	188	} else {
	189	return 1;
	190	}
	191
	192	/* FIXME */
	193	if (strcmp(argv[0], "open") == 0) {
	194	NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
	195	NL80211_AUTHTYPE_OPEN_SYSTEM);
	196	} else if (strcmp(argv[0], "shared") == 0) {
	197	NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
	198	NL80211_AUTHTYPE_SHARED_KEY);
	199	need_key = true;
	200	} else {
	201	return 1;
	202	}
	203	argv++;
	204	argc--;
	205
	206	freq = strtoul(argv[0], &end, 10);
	207	if (*end == '\0') {
	208	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
	209	argv++;
	210	argc--;
	211	} else {
	212	return 1;
	213	}
	214
	215	if (!argc && need_key)
	216	return 1;
	217	if (argc && !need_key)
	218	return 1;
	219	if (!argc)
	220	return 0;
	221
	222	if (strcmp(argv, "key") != 0 && strcmp(argv, "keys") != 0)
	223	return 1;
	224
	225	argv++;
	226	argc--;
	227
0e39f109	228	return parse_keys(msg, &argv, &argc);
5727fe03 JB	229	nla_put_failure:
	230	return -ENOSPC;
	231	}
	232
	233	TOPLEVEL(auth, "<SSID> <bssid> <type:open\|shared> <freq in MHz> [key 0:abcde d:1:6162636465]",
	234	NL80211_CMD_AUTHENTICATE, 0, CIB_NETDEV, iw_auth,
	235	"Authenticate with the given network.\n");