[thirdparty/iw.git] / event.c

#include <stdint.h>
#include <stdbool.h>
#include <net/if.h>
#include <errno.h>
#include "iw.h"

static int no_seq_check(struct nl_msg *msg, void *arg)
{
	return NL_OK;
}

static void print_frame(struct print_event_args *args, struct nlattr *attr)
{
	uint8_t *frame;
	size_t len;
	int i;
	char macbuf[6*3];
	uint16_t tmp;

	if (!attr)
		printf(" [no frame]");

	frame = nla_data(attr);
	len = nla_len(attr);

	if (len < 26) {
		printf(" [invalid frame: ");
		goto print_frame;
	}

	mac_addr_n2a(macbuf, frame + 10);
	printf(" %s -> ", macbuf);
	mac_addr_n2a(macbuf, frame + 4);
	printf("%s", macbuf);

	switch (frame[0] & 0xfc) {
	case 0x10: /* assoc resp */
	case 0x30: /* reassoc resp */
		/* status */
		tmp = (frame[27] << 8) + frame[26];
		printf(" status: %d: %s", tmp, get_status_str(tmp));
		break;
	case 0x00: /* assoc req */
	case 0x20: /* reassoc req */
		break;
	case 0xb0: /* auth */
		/* status */
		tmp = (frame[29] << 8) + frame[28];
		printf(" status: %d: %s", tmp, get_status_str(tmp));
		break;
		break;
	case 0xa0: /* disassoc */
	case 0xc0: /* deauth */
		/* reason */
		tmp = (frame[25] << 8) + frame[24];
		printf(" reason %d: %s", tmp, get_reason_str(tmp));
		break;
	}

	if (!args->frame)
		return;

	printf(" [frame:");

 print_frame:
	for (i = 0; i < len; i++)
		printf(" %.02x", frame[i]);
	printf("]");
}

static int print_event(struct nl_msg *msg, void *arg)
{
	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	struct nlattr *tb[NL80211_ATTR_MAX + 1], *nst;
	struct print_event_args *args = arg;
	char ifname[100];
	char macbuf[6*3];
	__u8 reg_type;
	int rem_nst;
	__u16 status;

	if (args->time) {
		struct timeval tv;
		gettimeofday(&tv, NULL);
		printf("%ld.%06u: ", (long) tv.tv_sec, (unsigned int) tv.tv_usec);
	}

	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
		  genlmsg_attrlen(gnlh, 0), NULL);

	if (tb[NL80211_ATTR_IFINDEX] && tb[NL80211_ATTR_WIPHY]) {
		if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), ifname);
		printf("%s (phy #%d): ", ifname, nla_get_u32(tb[NL80211_ATTR_WIPHY]));
	} else if (tb[NL80211_ATTR_IFINDEX]) {
		if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), ifname);
		printf("%s: ", ifname);
	} else if (tb[NL80211_ATTR_WIPHY]) {
		printf("phy #%d: ", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
	}

	switch (gnlh->cmd) {
	case NL80211_CMD_NEW_WIPHY:
		printf("renamed to %s\n", nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]));
		break;
	case NL80211_CMD_TRIGGER_SCAN:
		printf("scan started\n");
		break;
	case NL80211_CMD_NEW_SCAN_RESULTS:
		printf("scan finished:");
	case NL80211_CMD_SCAN_ABORTED:
		if (gnlh->cmd == NL80211_CMD_SCAN_ABORTED)
			printf("scan aborted:");
		if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
			nla_for_each_nested(nst, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem_nst)
				printf(" %d", nla_get_u32(nst));
			printf(",");
		}
		if (tb[NL80211_ATTR_SCAN_SSIDS]) {
			nla_for_each_nested(nst, tb[NL80211_ATTR_SCAN_SSIDS], rem_nst) {
				printf(" \"");
				print_ssid_escaped(nla_len(nst), nla_data(nst));
				printf("\"");
			}
		}
		printf("\n");
		break;
	case NL80211_CMD_REG_CHANGE:
		printf("regulatory domain change: ");

		reg_type = nla_get_u8(tb[NL80211_ATTR_REG_TYPE]);

		switch (reg_type) {
		case NL80211_REGDOM_TYPE_COUNTRY:
			printf("set to %s by %s request",
			       nla_get_string(tb[NL80211_ATTR_REG_ALPHA2]),
			       reg_initiator_to_string(nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])));
			if (tb[NL80211_ATTR_WIPHY])
				printf(" on phy%d", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
			break;
		case NL80211_REGDOM_TYPE_WORLD:
			printf("set to world roaming by %s request",
			       reg_initiator_to_string(nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])));
			break;
		case NL80211_REGDOM_TYPE_CUSTOM_WORLD:
			printf("custom world roaming rules in place on phy%d by %s request",
			       nla_get_u32(tb[NL80211_ATTR_WIPHY]),
			       reg_initiator_to_string(nla_get_u32(tb[NL80211_ATTR_REG_INITIATOR])));
			break;
		case NL80211_REGDOM_TYPE_INTERSECTION:
			printf("intersection used due to a request made by %s",
			       reg_initiator_to_string(nla_get_u32(tb[NL80211_ATTR_REG_INITIATOR])));
			if (tb[NL80211_ATTR_WIPHY])
				printf(" on phy%d", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
			break;
		default:
			printf("unknown source (upgrade this utility)");
			break;
		}

		printf("\n");
		break;
	case NL80211_CMD_JOIN_IBSS:
		mac_addr_n2a(macbuf, nla_data(tb[NL80211_ATTR_MAC]));
		printf("IBSS %s joined\n", macbuf);
		break;
	case NL80211_CMD_AUTHENTICATE:
		printf("auth");
		if (tb[NL80211_ATTR_FRAME])
			print_frame(args, tb[NL80211_ATTR_FRAME]);
		else if (tb[NL80211_ATTR_TIMED_OUT])
			printf(": timed out");
		else
			printf(": unknown event");
		printf("\n");
		break;
	case NL80211_CMD_ASSOCIATE:
		printf("assoc");
		if (tb[NL80211_ATTR_FRAME])
			print_frame(args, tb[NL80211_ATTR_FRAME]);
		else if (tb[NL80211_ATTR_TIMED_OUT])
			printf(": timed out");
		else
			printf(": unknown event");
		printf("\n");
		break;
	case NL80211_CMD_DEAUTHENTICATE:
		printf("deauth");
		print_frame(args, tb[NL80211_ATTR_FRAME]);
		printf("\n");
		break;
	case NL80211_CMD_DISASSOCIATE:
		printf("disassoc");
		print_frame(args, tb[NL80211_ATTR_FRAME]);
		printf("\n");
		break;
	case NL80211_CMD_CONNECT:
		status = 0;
		if (!tb[NL80211_ATTR_STATUS_CODE])
			printf("unknown connect status");
		else if (nla_get_u16(tb[NL80211_ATTR_STATUS_CODE]) == 0)
			printf("connected");
		else {
			status = nla_get_u16(tb[NL80211_ATTR_STATUS_CODE]);
			printf("failed to connect");
		}
		if (tb[NL80211_ATTR_MAC]) {
			mac_addr_n2a(macbuf, nla_data(tb[NL80211_ATTR_MAC]));
			printf(" to %s", macbuf);
		}
		if (status)
			printf(", status: %d: %s", status, get_status_str(status));
		printf("\n");
		break;
	case NL80211_CMD_ROAM:
		printf("roamed");
		if (tb[NL80211_ATTR_MAC]) {
			mac_addr_n2a(macbuf, nla_data(tb[NL80211_ATTR_MAC]));
			printf(" to %s", macbuf);
		}
		printf("\n");
		break;
	case NL80211_CMD_DISCONNECT:
		printf("disconnected");
		if (tb[NL80211_ATTR_DISCONNECTED_BY_AP])
			printf(" (by AP)");
		else
			printf(" (local request)");
		if (tb[NL80211_ATTR_REASON_CODE])
			printf(" reason: %d: %s", nla_get_u16(tb[NL80211_ATTR_REASON_CODE]),
				get_reason_str(nla_get_u16(tb[NL80211_ATTR_REASON_CODE])));
		printf("\n");
		break;
	default:
		printf("unknown event %d\n", gnlh->cmd);
		break;
	}

	return NL_SKIP;
}

struct wait_event {
	int n_cmds;
	const __u32 *cmds;
	__u32 cmd;
	struct print_event_args *pargs;
};

static int wait_event(struct nl_msg *msg, void *arg)
{
	struct wait_event *wait = arg;
	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	int i;

	for (i = 0; i < wait->n_cmds; i++) {
		if (gnlh->cmd == wait->cmds[i]) {
			wait->cmd = gnlh->cmd;
		if (wait->pargs)
			print_event(msg, wait->pargs);
		}
	}

	return NL_SKIP;
}

__u32 __listen_events(struct nl80211_state *state,
		      const int n_waits, const __u32 *waits,
		      struct print_event_args *args)
{
	int mcid, ret;
	struct nl_cb *cb = nl_cb_alloc(iw_debug ? NL_CB_DEBUG : NL_CB_DEFAULT);
	struct wait_event wait_ev;

	if (!cb) {
		fprintf(stderr, "failed to allocate netlink callbacks\n");
		return -ENOMEM;
	}

	/* Configuration multicast group */
	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "config");
	if (mcid < 0)
		return mcid;

	ret = nl_socket_add_membership(state->nl_sock, mcid);
	if (ret)
		return ret;

	/* Scan multicast group */
	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "scan");
	if (mcid >= 0) {
		ret = nl_socket_add_membership(state->nl_sock, mcid);
		if (ret)
			return ret;
	}

	/* Regulatory multicast group */
	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "regulatory");
	if (mcid >= 0) {
		ret = nl_socket_add_membership(state->nl_sock, mcid);
		if (ret)
			return ret;
	}

	/* MLME multicast group */
	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "mlme");
	if (mcid >= 0) {
		ret = nl_socket_add_membership(state->nl_sock, mcid);
		if (ret)
			return ret;
	}

	/* no sequence checking for multicast messages */
	nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);

	if (n_waits && waits) {
		wait_ev.cmds = waits;
		wait_ev.n_cmds = n_waits;
		wait_ev.pargs = args;
		nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, wait_event, &wait_ev);
	} else
		nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_event, args);

	wait_ev.cmd = 0;

	while (!wait_ev.cmd)
		nl_recvmsgs(state->nl_sock, cb);

	nl_cb_put(cb);

	return wait_ev.cmd;
}

__u32 listen_events(struct nl80211_state *state,
		    const int n_waits, const __u32 *waits)
{
	return __listen_events(state, n_waits, waits, NULL);
}

static int print_events(struct nl80211_state *state,
			struct nl_cb *cb,
			struct nl_msg *msg,
			int argc, char **argv)
{
	struct print_event_args args;

	memset(&args, 0, sizeof(args));

	argc--;
	argv++;

	while (argc > 0) {
		if (strcmp(argv[0], "-f") == 0)
			args.frame = true;
		else if (strcmp(argv[0], "-t") == 0)
			args.time = true;
		else
			return 1;
		argc--;
		argv++;
	}

	if (argc)
		return 1;

	return __listen_events(state, 0, NULL, &args);
}
TOPLEVEL(event, "[-t] [-f]", 0, 0, CIB_NONE, print_events,
	"Monitor events from the kernel.\n"
	"-t - print timestamp\n"
	"-f - print full frame for auth/assoc etc.");
Commit	Line	Data
957a0f07 JB	1	#include <stdint.h>
	2	#include <stdbool.h>
	3	#include <net/if.h>
	4	#include <errno.h>
	5	#include "iw.h"
	6
	7	static int no_seq_check(struct nl_msg msg, void arg)
	8	{
	9	return NL_OK;
	10	}
	11
957a0f07 JB	12	static void print_frame(struct print_event_args args, struct nlattr attr)
	13	{
	14	uint8_t *frame;
	15	size_t len;
	16	int i;
	17	char macbuf[6*3];
	18	uint16_t tmp;
	19
	20	if (!attr)
	21	printf(" [no frame]");
	22
	23	frame = nla_data(attr);
	24	len = nla_len(attr);
	25
	26	if (len < 26) {
	27	printf(" [invalid frame: ");
	28	goto print_frame;
	29	}
	30
	31	mac_addr_n2a(macbuf, frame + 10);
	32	printf(" %s -> ", macbuf);
	33	mac_addr_n2a(macbuf, frame + 4);
	34	printf("%s", macbuf);
	35
	36	switch (frame[0] & 0xfc) {
	37	case 0x10: /* assoc resp */
	38	case 0x30: /* reassoc resp */
	39	/* status */
	40	tmp = (frame[27] << 8) + frame[26];
	41	printf(" status: %d: %s", tmp, get_status_str(tmp));
	42	break;
	43	case 0x00: /* assoc req */
	44	case 0x20: /* reassoc req */
	45	break;
	46	case 0xb0: /* auth */
	47	/* status */
	48	tmp = (frame[29] << 8) + frame[28];
	49	printf(" status: %d: %s", tmp, get_status_str(tmp));
	50	break;
	51	break;
	52	case 0xa0: /* disassoc */
	53	case 0xc0: /* deauth */
	54	/* reason */
	55	tmp = (frame[25] << 8) + frame[24];
	56	printf(" reason %d: %s", tmp, get_reason_str(tmp));
	57	break;
	58	}
	59
	60	if (!args->frame)
	61	return;
	62
	63	printf(" [frame:");
	64
	65	print_frame:
	66	for (i = 0; i < len; i++)
	67	printf(" %.02x", frame[i]);
	68	printf("]");
	69	}
	70
	71	static int print_event(struct nl_msg msg, void arg)
	72	{
	73	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
748f8489	74	struct nlattr tb[NL80211_ATTR_MAX + 1], nst;
957a0f07 JB	75	struct print_event_args *args = arg;
	76	char ifname[100];
	77	char macbuf[6*3];
	78	__u8 reg_type;
748f8489	79	int rem_nst;
f1a666a6	80	__u16 status;
957a0f07 JB	81
	82	if (args->time) {
	83	struct timeval tv;
	84	gettimeofday(&tv, NULL);
	85	printf("%ld.%06u: ", (long) tv.tv_sec, (unsigned int) tv.tv_usec);
	86	}
	87
	88	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
	89	genlmsg_attrlen(gnlh, 0), NULL);
	90
	91	if (tb[NL80211_ATTR_IFINDEX] && tb[NL80211_ATTR_WIPHY]) {
	92	if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), ifname);
	93	printf("%s (phy #%d): ", ifname, nla_get_u32(tb[NL80211_ATTR_WIPHY]));
	94	} else if (tb[NL80211_ATTR_IFINDEX]) {
	95	if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), ifname);
	96	printf("%s: ", ifname);
	97	} else if (tb[NL80211_ATTR_WIPHY]) {
	98	printf("phy #%d: ", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
	99	}
	100
	101	switch (gnlh->cmd) {
	102	case NL80211_CMD_NEW_WIPHY:
	103	printf("renamed to %s\n", nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]));
	104	break;
e67be815 JB	105	case NL80211_CMD_TRIGGER_SCAN:
	106	printf("scan started\n");
	107	break;
957a0f07	108	case NL80211_CMD_NEW_SCAN_RESULTS:
748f8489	109	printf("scan finished:");
957a0f07	110	case NL80211_CMD_SCAN_ABORTED:
748f8489 JB	111	if (gnlh->cmd == NL80211_CMD_SCAN_ABORTED)
	112	printf("scan aborted:");
	113	if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
	114	nla_for_each_nested(nst, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem_nst)
	115	printf(" %d", nla_get_u32(nst));
	116	printf(",");
	117	}
	118	if (tb[NL80211_ATTR_SCAN_SSIDS]) {
	119	nla_for_each_nested(nst, tb[NL80211_ATTR_SCAN_SSIDS], rem_nst) {
	120	printf(" \"");
	121	print_ssid_escaped(nla_len(nst), nla_data(nst));
	122	printf("\"");
	123	}
	124	}
	125	printf("\n");
957a0f07 JB	126	break;
	127	case NL80211_CMD_REG_CHANGE:
	128	printf("regulatory domain change: ");
	129
	130	reg_type = nla_get_u8(tb[NL80211_ATTR_REG_TYPE]);
	131
	132	switch (reg_type) {
	133	case NL80211_REGDOM_TYPE_COUNTRY:
	134	printf("set to %s by %s request",
	135	nla_get_string(tb[NL80211_ATTR_REG_ALPHA2]),
	136	reg_initiator_to_string(nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])));
	137	if (tb[NL80211_ATTR_WIPHY])
	138	printf(" on phy%d", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
	139	break;
	140	case NL80211_REGDOM_TYPE_WORLD:
	141	printf("set to world roaming by %s request",
	142	reg_initiator_to_string(nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])));
	143	break;
	144	case NL80211_REGDOM_TYPE_CUSTOM_WORLD:
	145	printf("custom world roaming rules in place on phy%d by %s request",
	146	nla_get_u32(tb[NL80211_ATTR_WIPHY]),
	147	reg_initiator_to_string(nla_get_u32(tb[NL80211_ATTR_REG_INITIATOR])));
	148	break;
	149	case NL80211_REGDOM_TYPE_INTERSECTION:
	150	printf("intersection used due to a request made by %s",
	151	reg_initiator_to_string(nla_get_u32(tb[NL80211_ATTR_REG_INITIATOR])));
	152	if (tb[NL80211_ATTR_WIPHY])
	153	printf(" on phy%d", nla_get_u32(tb[NL80211_ATTR_WIPHY]));
	154	break;
	155	default:
	156	printf("unknown source (upgrade this utility)");
	157	break;
	158	}
	159
	160	printf("\n");
	161	break;
	162	case NL80211_CMD_JOIN_IBSS:
	163	mac_addr_n2a(macbuf, nla_data(tb[NL80211_ATTR_MAC]));
	164	printf("IBSS %s joined\n", macbuf);
	165	break;
	166	case NL80211_CMD_AUTHENTICATE:
	167	printf("auth");
aea5dbd2 JB	168	if (tb[NL80211_ATTR_FRAME])
	169	print_frame(args, tb[NL80211_ATTR_FRAME]);
	170	else if (tb[NL80211_ATTR_TIMED_OUT])
	171	printf(": timed out");
	172	else
	173	printf(": unknown event");
957a0f07 JB	174	printf("\n");
	175	break;
	176	case NL80211_CMD_ASSOCIATE:
	177	printf("assoc");
aea5dbd2 JB	178	if (tb[NL80211_ATTR_FRAME])
	179	print_frame(args, tb[NL80211_ATTR_FRAME]);
	180	else if (tb[NL80211_ATTR_TIMED_OUT])
	181	printf(": timed out");
	182	else
	183	printf(": unknown event");
957a0f07 JB	184	printf("\n");
	185	break;
	186	case NL80211_CMD_DEAUTHENTICATE:
	187	printf("deauth");
	188	print_frame(args, tb[NL80211_ATTR_FRAME]);
	189	printf("\n");
	190	break;
	191	case NL80211_CMD_DISASSOCIATE:
	192	printf("disassoc");
	193	print_frame(args, tb[NL80211_ATTR_FRAME]);
	194	printf("\n");
	195	break;
f1a666a6 JB	196	case NL80211_CMD_CONNECT:
	197	status = 0;
	198	if (!tb[NL80211_ATTR_STATUS_CODE])
	199	printf("unknown connect status");
	200	else if (nla_get_u16(tb[NL80211_ATTR_STATUS_CODE]) == 0)
	201	printf("connected");
	202	else {
	203	status = nla_get_u16(tb[NL80211_ATTR_STATUS_CODE]);
	204	printf("failed to connect");
	205	}
	206	if (tb[NL80211_ATTR_MAC]) {
	207	mac_addr_n2a(macbuf, nla_data(tb[NL80211_ATTR_MAC]));
	208	printf(" to %s", macbuf);
	209	}
	210	if (status)
	211	printf(", status: %d: %s", status, get_status_str(status));
	212	printf("\n");
	213	break;
	214	case NL80211_CMD_ROAM:
	215	printf("roamed");
	216	if (tb[NL80211_ATTR_MAC]) {
	217	mac_addr_n2a(macbuf, nla_data(tb[NL80211_ATTR_MAC]));
	218	printf(" to %s", macbuf);
	219	}
	220	printf("\n");
	221	break;
	222	case NL80211_CMD_DISCONNECT:
	223	printf("disconnected");
	224	if (tb[NL80211_ATTR_DISCONNECTED_BY_AP])
	225	printf(" (by AP)");
	226	else
	227	printf(" (local request)");
	228	if (tb[NL80211_ATTR_REASON_CODE])
	229	printf(" reason: %d: %s", nla_get_u16(tb[NL80211_ATTR_REASON_CODE]),
	230	get_reason_str(nla_get_u16(tb[NL80211_ATTR_REASON_CODE])));
	231	printf("\n");
	232	break;
957a0f07 JB	233	default:
	234	printf("unknown event %d\n", gnlh->cmd);
	235	break;
	236	}
	237
	238	return NL_SKIP;
	239	}
	240
	241	struct wait_event {
	242	int n_cmds;
	243	const __u32 *cmds;
	244	__u32 cmd;
7fabd346	245	struct print_event_args *pargs;
957a0f07 JB	246	};
	247
	248	static int wait_event(struct nl_msg msg, void arg)
	249	{
	250	struct wait_event *wait = arg;
	251	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	252	int i;
	253
	254	for (i = 0; i < wait->n_cmds; i++) {
	255	if (gnlh->cmd == wait->cmds[i]) {
	256	wait->cmd = gnlh->cmd;
7fabd346 JB	257	if (wait->pargs)
7fabd346 JB	258	print_event(msg, wait->pargs);
957a0f07 JB	259	}
	260	}
	261
	262	return NL_SKIP;
	263	}
	264
7fabd346 JB	265	__u32 __listen_events(struct nl80211_state *state,
	266	const int n_waits, const __u32 *waits,
	267	struct print_event_args *args)
957a0f07 JB	268	{
	269	int mcid, ret;
	270	struct nl_cb *cb = nl_cb_alloc(iw_debug ? NL_CB_DEBUG : NL_CB_DEFAULT);
	271	struct wait_event wait_ev;
	272
	273	if (!cb) {
	274	fprintf(stderr, "failed to allocate netlink callbacks\n");
	275	return -ENOMEM;
	276	}
	277
	278	/* Configuration multicast group */
	279	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "config");
	280	if (mcid < 0)
	281	return mcid;
	282
	283	ret = nl_socket_add_membership(state->nl_sock, mcid);
	284	if (ret)
	285	return ret;
	286
	287	/* Scan multicast group */
	288	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "scan");
	289	if (mcid >= 0) {
	290	ret = nl_socket_add_membership(state->nl_sock, mcid);
	291	if (ret)
	292	return ret;
	293	}
	294
	295	/* Regulatory multicast group */
	296	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "regulatory");
	297	if (mcid >= 0) {
	298	ret = nl_socket_add_membership(state->nl_sock, mcid);
	299	if (ret)
	300	return ret;
	301	}
	302
	303	/* MLME multicast group */
	304	mcid = nl_get_multicast_id(state->nl_sock, "nl80211", "mlme");
	305	if (mcid >= 0) {
	306	ret = nl_socket_add_membership(state->nl_sock, mcid);
	307	if (ret)
	308	return ret;
	309	}
	310
	311	/* no sequence checking for multicast messages */
	312	nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
	313
	314	if (n_waits && waits) {
	315	wait_ev.cmds = waits;
	316	wait_ev.n_cmds = n_waits;
7fabd346	317	wait_ev.pargs = args;
957a0f07	318	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, wait_event, &wait_ev);
7fabd346	319	} else
957a0f07	320	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_event, args);
957a0f07 JB	321
	322	wait_ev.cmd = 0;
	323
	324	while (!wait_ev.cmd)
	325	nl_recvmsgs(state->nl_sock, cb);
	326
	327	nl_cb_put(cb);
	328
	329	return wait_ev.cmd;
	330	}
	331
	332	__u32 listen_events(struct nl80211_state *state,
	333	const int n_waits, const __u32 *waits)
	334	{
	335	return __listen_events(state, n_waits, waits, NULL);
	336	}
	337
	338	static int print_events(struct nl80211_state *state,
	339	struct nl_cb *cb,
	340	struct nl_msg *msg,
	341	int argc, char **argv)
	342	{
	343	struct print_event_args args;
	344
	345	memset(&args, 0, sizeof(args));
	346
	347	argc--;
	348	argv++;
	349
	350	while (argc > 0) {
	351	if (strcmp(argv[0], "-f") == 0)
	352	args.frame = true;
	353	else if (strcmp(argv[0], "-t") == 0)
	354	args.time = true;
	355	else
	356	return 1;
	357	argc--;
	358	argv++;
	359	}
	360
	361	if (argc)
	362	return 1;
	363
	364	return __listen_events(state, 0, NULL, &args);
	365	}
01ae06f9 JB	366	TOPLEVEL(event, "[-t] [-f]", 0, 0, CIB_NONE, print_events,
	367	"Monitor events from the kernel.\n"
	368	"-t - print timestamp\n"
	369	"-f - print full frame for auth/assoc etc.");