[thirdparty/iw.git] / interface.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 <linux/nl80211.h>

#include <net/if.h>

#include "iw.h"

/* return 0 if not found, 1 if ok, -1 on error */
static int get_if_type(int *argc, char ***argv, enum nl80211_iftype *type)
{
	char *tpstr;

	if (*argc < 2)
		return 0;

	if (strcmp((*argv)[0], "type"))
		return 0;

	tpstr = (*argv)[1];
	*argc -= 2;
	*argv += 2;

	if (strcmp(tpstr, "adhoc") == 0 ||
	    strcmp(tpstr, "ibss") == 0) {
		*type = NL80211_IFTYPE_ADHOC;
		return 1;
	} else if (strcmp(tpstr, "monitor") == 0) {
		*type = NL80211_IFTYPE_MONITOR;
		return 1;
	} else if (strcmp(tpstr, "ap") == 0 || strcmp(tpstr, "master") == 0) {
		*type = NL80211_IFTYPE_AP;
		return 1;
	} else if (strcmp(tpstr, "ap_vlan") == 0) {
		*type = NL80211_IFTYPE_AP_VLAN;
		return 1;
	} else if (strcmp(tpstr, "wds") == 0) {
		*type = NL80211_IFTYPE_WDS;
		return 1;
	} else if (strcmp(tpstr, "station") == 0) {
		*type = NL80211_IFTYPE_STATION;
		return 1;
	}


	fprintf(stderr, "invalid interface type %s\n", tpstr);
	return -1;
}

static int handle_interface_add(struct nl80211_state *state,
				char *phy, char *dev, int argc, char **argv)
{
	char *name = argv[0];
	enum nl80211_iftype type;
	int tpset, err;
	struct nl_msg *msg;

	if (argc < 1) {
		fprintf(stderr, "not enough arguments\n");
		return -1;
	}

	argc--;
	argv++;

	if (argc) {
		tpset = get_if_type(&argc, &argv, &type);
		if (tpset < 0)
			return -1;
	}

	if (argc) {
		fprintf(stderr, "too many arguments\n");
		return -1;
	}

	msg = nlmsg_alloc();
	if (!msg) {
		fprintf(stderr, "failed to allocate netlink msg\n");
		return -1;
	}

	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
		    0, NL80211_CMD_NEW_INTERFACE, 0);
	if (dev)
		NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
	if (phy)
		return -1; /* XXX TODO */
	NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, name);
	if (tpset)
		NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type);

	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 ||
	    (err = nl_wait_for_ack(state->nl_handle)) < 0) {
 nla_put_failure:
		fprintf(stderr, "failed to create interface: %d\n", err);
		nlmsg_free(msg);
		return -1;
	}

	nlmsg_free(msg);

	return 0;
}

static int handle_interface_del(struct nl80211_state *state,
				char *phy, char *dev, int argc, char **argv)
{
	int err;
	struct nl_msg *msg;

	if (argc) {
		fprintf(stderr, "too many arguments\n");
		return -1;
	}

        msg = nlmsg_alloc();
	if (!msg)
        	return -1;

	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
		    0, NL80211_CMD_DEL_INTERFACE, 0);
	if (!dev) {
		fprintf(stderr, "need device\n");
		nlmsg_free(msg);
		return -1;
	}
	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));

	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 ||
	    (err = nl_wait_for_ack(state->nl_handle)) < 0) {
 nla_put_failure:
		fprintf(stderr, "failed to remove interface: %d\n", err);
		nlmsg_free(msg);
		return -1;
	}

	nlmsg_free(msg);

	return 0;
}

int handle_interface(struct nl80211_state *state,
		     char *phy, char *dev, int argc, char **argv)
{
	char *cmd = argv[0];

	if (argc < 1)
		return -1;

	argc--;
	argv++;

	if (strcmp(cmd, "add") == 0)
		return handle_interface_add(state, phy, dev, argc, argv);
	else if (strcmp(cmd, "del") == 0)
		return handle_interface_del(state, phy, dev, argc, argv);

	printf("invalid interface command %s\n", cmd);
	return -1;
}
Commit	Line	Data
45c7212c JB	1
	2	#include <errno.h>
	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	#include <linux/nl80211.h>
	9
	10	#include <net/if.h>
	11
	12	#include "iw.h"
	13
	14	/* return 0 if not found, 1 if ok, -1 on error */
	15	static int get_if_type(int argc, char *argv, enum nl80211_iftype type)
	16	{
	17	char *tpstr;
	18
	19	if (*argc < 2)
	20	return 0;
	21
	22	if (strcmp((*argv)[0], "type"))
	23	return 0;
	24
	25	tpstr = (*argv)[1];
	26	*argc -= 2;
	27	*argv += 2;
	28
	29	if (strcmp(tpstr, "adhoc") == 0 \|\|
	30	strcmp(tpstr, "ibss") == 0) {
	31	*type = NL80211_IFTYPE_ADHOC;
	32	return 1;
	33	} else if (strcmp(tpstr, "monitor") == 0) {
	34	*type = NL80211_IFTYPE_MONITOR;
	35	return 1;
1cdd9016	36	} else if (strcmp(tpstr, "ap") == 0 \|\| strcmp(tpstr, "master") == 0) {
45c7212c JB	37	*type = NL80211_IFTYPE_AP;
	38	return 1;
	39	} else if (strcmp(tpstr, "ap_vlan") == 0) {
	40	*type = NL80211_IFTYPE_AP_VLAN;
	41	return 1;
	42	} else if (strcmp(tpstr, "wds") == 0) {
	43	*type = NL80211_IFTYPE_WDS;
	44	return 1;
	45	} else if (strcmp(tpstr, "station") == 0) {
	46	*type = NL80211_IFTYPE_STATION;
	47	return 1;
	48	}
	49
	50
	51	fprintf(stderr, "invalid interface type %s\n", tpstr);
	52	return -1;
	53	}
	54
	55	static int handle_interface_add(struct nl80211_state *state,
	56	char phy, char dev, int argc, char **argv)
	57	{
	58	char *name = argv[0];
	59	enum nl80211_iftype type;
	60	int tpset, err;
	61	struct nl_msg *msg;
	62
	63	if (argc < 1) {
	64	fprintf(stderr, "not enough arguments\n");
	65	return -1;
	66	}
	67
	68	argc--;
	69	argv++;
	70
	71	if (argc) {
	72	tpset = get_if_type(&argc, &argv, &type);
	73	if (tpset < 0)
	74	return -1;
	75	}
	76
	77	if (argc) {
	78	fprintf(stderr, "too many arguments\n");
	79	return -1;
	80	}
	81
1cdd9016 MK	82	msg = nlmsg_alloc();
	83	if (!msg) {
	84	fprintf(stderr, "failed to allocate netlink msg\n");
	85	return -1;
	86	}
45c7212c JB	87
	88	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
	89	0, NL80211_CMD_NEW_INTERFACE, 0);
	90	if (dev)
	91	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
	92	if (phy)
	93	return -1; /* XXX TODO */
	94	NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, name);
	95	if (tpset)
	96	NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type);
	97
	98	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 \|\|
	99	(err = nl_wait_for_ack(state->nl_handle)) < 0) {
	100	nla_put_failure:
	101	fprintf(stderr, "failed to create interface: %d\n", err);
	102	nlmsg_free(msg);
	103	return -1;
	104	}
	105
	106	nlmsg_free(msg);
	107
	108	return 0;
	109	}
	110
3fcfe40e JB	111	static int handle_interface_del(struct nl80211_state *state,
	112	char phy, char dev, int argc, char **argv)
	113	{
	114	int err;
	115	struct nl_msg *msg;
	116
	117	if (argc) {
	118	fprintf(stderr, "too many arguments\n");
	119	return -1;
	120	}
	121
	122	msg = nlmsg_alloc();
	123	if (!msg)
	124	return -1;
	125
	126	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
	127	0, NL80211_CMD_DEL_INTERFACE, 0);
	128	if (!dev) {
	129	fprintf(stderr, "need device\n");
	130	nlmsg_free(msg);
	131	return -1;
	132	}
	133	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
	134
	135	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 \|\|
	136	(err = nl_wait_for_ack(state->nl_handle)) < 0) {
	137	nla_put_failure:
	138	fprintf(stderr, "failed to remove interface: %d\n", err);
	139	nlmsg_free(msg);
	140	return -1;
	141	}
	142
	143	nlmsg_free(msg);
	144
	145	return 0;
	146	}
	147
45c7212c JB	148	int handle_interface(struct nl80211_state *state,
	149	char phy, char dev, int argc, char **argv)
	150	{
	151	char *cmd = argv[0];
	152
	153	if (argc < 1)
	154	return -1;
	155
	156	argc--;
	157	argv++;
	158
	159	if (strcmp(cmd, "add") == 0)
	160	return handle_interface_add(state, phy, dev, argc, argv);
3fcfe40e JB	161	else if (strcmp(cmd, "del") == 0)
3fcfe40e JB	162	return handle_interface_del(state, phy, dev, argc, argv);
45c7212c JB	163
	164	printf("invalid interface command %s\n", cmd);
	165	return -1;
	166	}