[thirdparty/iw.git] / ibss.c

#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE
#endif
#include <errno.h>
#include <string.h>
#include <strings.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"

SECTION(ibss);

static int join_ibss(struct nl80211_state *state,
		     struct nl_cb *cb,
		     struct nl_msg *msg,
		     int argc, char **argv,
		     enum id_input id)
{
	char *end;
	unsigned char abssid[6];
	unsigned char rates[NL80211_MAX_SUPP_RATES];
	int n_rates = 0;
	char *value = NULL, *sptr = NULL;
	float rate;
	int bintval;
	int i;
	static const struct {
		const char *name;
		unsigned int val;
	} htmap[] = {
		{ .name = "HT20", .val = NL80211_CHAN_HT20, },
		{ .name = "HT40+", .val = NL80211_CHAN_HT40PLUS, },
		{ .name = "HT40-", .val = NL80211_CHAN_HT40MINUS, },
		{ .name = "NOHT", .val = NL80211_CHAN_NO_HT, },
	};
	unsigned int htval;

	if (argc < 2)
		return 1;

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

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

	if (argc) {
		for (i = 0; i < ARRAY_SIZE(htmap); i++) {
			if (strcasecmp(htmap[i].name, argv[0]) == 0) {
				htval = htmap[i].val;
				break;
			}
		}
		if (i != ARRAY_SIZE(htmap)) {
			NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
				    htval);
			argv++;
			argc--;
		}

	}

	if (argc && strcmp(argv[0], "fixed-freq") == 0) {
		NLA_PUT_FLAG(msg, NL80211_ATTR_FREQ_FIXED);
		argv++;
		argc--;
	}

	if (argc) {
		if (mac_addr_a2n(abssid, argv[0]) == 0) {
			NLA_PUT(msg, NL80211_ATTR_MAC, 6, abssid);
			argv++;
			argc--;
		}
	}

	if (argc > 1 && strcmp(argv[0], "beacon-interval") == 0) {
		argv++;
		argc--;
		bintval = strtoul(argv[0], &end, 10);
		if (*end != '\0')
			return 1;
		NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, bintval);
		argv++;
		argc--;
	}

	/* basic rates */
	if (argc > 1 && strcmp(argv[0], "basic-rates") == 0) {
		argv++;
		argc--;

		value = strtok_r(argv[0], ",", &sptr);

		while (value && n_rates < NL80211_MAX_SUPP_RATES) {
			rate = strtod(value, &end);
			rates[n_rates] = rate * 2;

			/* filter out suspicious values  */
			if (*end != '\0' || !rates[n_rates] ||
			    rate*2 != rates[n_rates])
				return 1;

			n_rates++;
			value = strtok_r(NULL, ",", &sptr);
		}

		NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, n_rates, rates);

		argv++;
		argc--;
	}

	/* multicast rate */
	if (argc > 1 && strcmp(argv[0], "mcast-rate") == 0) {
		argv++;
		argc--;

		rate = strtod(argv[0], &end);
		if (*end != '\0')
			return 1;

		NLA_PUT_U32(msg, NL80211_ATTR_MCAST_RATE, (int)(rate * 10));
		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 leave_ibss(struct nl80211_state *state,
		      struct nl_cb *cb,
		      struct nl_msg *msg,
		      int argc, char **argv,
		      enum id_input id)
{
	return 0;
}
COMMAND(ibss, leave, NULL,
	NL80211_CMD_LEAVE_IBSS, 0, CIB_NETDEV, leave_ibss,
	"Leave the current IBSS cell.");
COMMAND(ibss, join,
	"<SSID> <freq in MHz> [HT20|HT40+|HT40-|NOHT] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>]"
	" [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] "
	"[key d:0:abcde]",
	NL80211_CMD_JOIN_IBSS, 0, CIB_NETDEV, join_ibss,
	"Join the IBSS cell with the given SSID, if it doesn't exist create\n"
	"it on the given frequency. When fixed frequency is requested, don't\n"
	"join/create a cell on a different frequency. When a fixed BSSID is\n"
	"requested use that BSSID and do not adopt another cell's BSSID even\n"
	"if it has higher TSF and the same SSID. If an IBSS is created, create\n"
	"it with the specified basic-rates, multicast-rate and beacon-interval.");
Commit	Line	Data
b893686f JB	1	#ifndef _POSIX_SOURCE
	2	#define _POSIX_SOURCE
	3	#endif
edea4d14	4	#include <errno.h>
b893686f	5	#include <string.h>
135cb523	6	#include <strings.h>
edea4d14 JB	7
	8	#include <netlink/genl/genl.h>
	9	#include <netlink/genl/family.h>
	10	#include <netlink/genl/ctrl.h>
	11	#include <netlink/msg.h>
	12	#include <netlink/attr.h>
	13
	14	#include "nl80211.h"
	15	#include "iw.h"
	16
4698bfc2 JB	17	SECTION(ibss);
4698bfc2 JB	18
edea4d14 JB	19	static int join_ibss(struct nl80211_state *state,
	20	struct nl_cb *cb,
	21	struct nl_msg *msg,
05514f95 JB	22	int argc, char **argv,
05514f95 JB	23	enum id_input id)
edea4d14	24	{
95940df3	25	char *end;
edea4d14	26	unsigned char abssid[6];
6a24bb22 TP	27	unsigned char rates[NL80211_MAX_SUPP_RATES];
	28	int n_rates = 0;
	29	char value = NULL, sptr = NULL;
	30	float rate;
ec46ba52	31	int bintval;
135cb523 SW	32	int i;
	33	static const struct {
	34	const char *name;
	35	unsigned int val;
	36	} htmap[] = {
	37	{ .name = "HT20", .val = NL80211_CHAN_HT20, },
	38	{ .name = "HT40+", .val = NL80211_CHAN_HT40PLUS, },
	39	{ .name = "HT40-", .val = NL80211_CHAN_HT40MINUS, },
	40	{ .name = "NOHT", .val = NL80211_CHAN_NO_HT, },
	41	};
	42	unsigned int htval;
edea4d14	43
95940df3 JB	44	if (argc < 2)
95940df3 JB	45	return 1;
edea4d14	46
95940df3 JB	47	/* SSID */
95940df3 JB	48	NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]);
edea4d14 JB	49	argv++;
	50	argc--;
	51
95940df3 JB	52	/* freq */
	53	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ,
	54	strtoul(argv[0], &end, 10));
	55	if (*end != '\0')
	56	return 1;
	57	argv++;
	58	argc--;
edea4d14	59
135cb523 SW	60	if (argc) {
	61	for (i = 0; i < ARRAY_SIZE(htmap); i++) {
	62	if (strcasecmp(htmap[i].name, argv[0]) == 0) {
	63	htval = htmap[i].val;
	64	break;
	65	}
	66	}
	67	if (i != ARRAY_SIZE(htmap)) {
	68	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
	69	htval);
	70	argv++;
	71	argc--;
	72	}
	73
	74	}
	75
95940df3 JB	76	if (argc && strcmp(argv[0], "fixed-freq") == 0) {
	77	NLA_PUT_FLAG(msg, NL80211_ATTR_FREQ_FIXED);
	78	argv++;
	79	argc--;
edea4d14 JB	80	}
edea4d14 JB	81
95940df3	82	if (argc) {
51e9bd80 JB	83	if (mac_addr_a2n(abssid, argv[0]) == 0) {
	84	NLA_PUT(msg, NL80211_ATTR_MAC, 6, abssid);
	85	argv++;
	86	argc--;
	87	}
edea4d14 JB	88	}
edea4d14 JB	89
ec46ba52 BR	90	if (argc > 1 && strcmp(argv[0], "beacon-interval") == 0) {
	91	argv++;
	92	argc--;
	93	bintval = strtoul(argv[0], &end, 10);
	94	if (*end != '\0')
	95	return 1;
	96	NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, bintval);
	97	argv++;
	98	argc--;
	99	}
	100
6a24bb22 TP	101	/* basic rates */
	102	if (argc > 1 && strcmp(argv[0], "basic-rates") == 0) {
	103	argv++;
	104	argc--;
	105
	106	value = strtok_r(argv[0], ",", &sptr);
	107
	108	while (value && n_rates < NL80211_MAX_SUPP_RATES) {
	109	rate = strtod(value, &end);
	110	rates[n_rates] = rate * 2;
	111
	112	/* filter out suspicious values */
	113	if (*end != '\0' \|\| !rates[n_rates] \|\|
	114	rate*2 != rates[n_rates])
	115	return 1;
	116
	117	n_rates++;
	118	value = strtok_r(NULL, ",", &sptr);
	119	}
	120
	121	NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, n_rates, rates);
	122
	123	argv++;
	124	argc--;
	125	}
	126
506b442b FF	127	/* multicast rate */
	128	if (argc > 1 && strcmp(argv[0], "mcast-rate") == 0) {
	129	argv++;
	130	argc--;
	131
	132	rate = strtod(argv[0], &end);
	133	if (*end != '\0')
	134	return 1;
	135
e399be8c	136	NLA_PUT_U32(msg, NL80211_ATTR_MCAST_RATE, (int)(rate * 10));
506b442b FF	137	argv++;
	138	argc--;
	139	}
	140
1e03690e JB	141	if (!argc)
1e03690e JB	142	return 0;
edea4d14	143
1e03690e JB	144	if (strcmp(argv, "key") != 0 && strcmp(argv, "keys") != 0)
1e03690e JB	145	return 1;
ded1f078	146
1e03690e JB	147	argv++;
1e03690e JB	148	argc--;
51e9bd80	149
1e03690e	150	return parse_keys(msg, argv, argc);
edea4d14 JB	151	nla_put_failure:
	152	return -ENOSPC;
	153	}
	154
	155	static int leave_ibss(struct nl80211_state *state,
	156	struct nl_cb *cb,
	157	struct nl_msg *msg,
05514f95 JB	158	int argc, char **argv,
05514f95 JB	159	enum id_input id)
edea4d14 JB	160	{
	161	return 0;
	162	}
	163	COMMAND(ibss, leave, NULL,
806bad30 JB	164	NL80211_CMD_LEAVE_IBSS, 0, CIB_NETDEV, leave_ibss,
806bad30 JB	165	"Leave the current IBSS cell.");
6a24bb22	166	COMMAND(ibss, join,
135cb523	167	"<SSID> <freq in MHz> [HT20\|HT40+\|HT40-\|NOHT] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>]"
506b442b FF	168	" [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] "
506b442b FF	169	"[key d:0:abcde]",
806bad30 JB	170	NL80211_CMD_JOIN_IBSS, 0, CIB_NETDEV, join_ibss,
	171	"Join the IBSS cell with the given SSID, if it doesn't exist create\n"
	172	"it on the given frequency. When fixed frequency is requested, don't\n"
	173	"join/create a cell on a different frequency. When a fixed BSSID is\n"
	174	"requested use that BSSID and do not adopt another cell's BSSID even\n"
ec46ba52	175	"if it has higher TSF and the same SSID. If an IBSS is created, create\n"
506b442b	176	"it with the specified basic-rates, multicast-rate and beacon-interval.");