[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;
	enum nl80211_iftype type;
	int tpset, err;
	struct nl_msg *msg;

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

	name = argv[0];
	argc--;
	argv++;

	tpset = get_if_type(&argc, &argv, &type);
	if (tpset == 0)
		fprintf(stderr, "you must specify an interface type\n");
	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) {
		fprintf(stderr, "you must specify an interface command\n");
		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	{
2dfd6bfa	58	char *name;
45c7212c JB	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
2dfd6bfa	68	name = argv[0];
45c7212c JB	69	argc--;
	70	argv++;
	71
2dfd6bfa AL	72	tpset = get_if_type(&argc, &argv, &type);
	73	if (tpset == 0)
	74	fprintf(stderr, "you must specify an interface type\n");
	75	if (tpset <= 0)
	76	return -1;
45c7212c JB	77
	78	if (argc) {
	79	fprintf(stderr, "too many arguments\n");
	80	return -1;
	81	}
	82
1cdd9016 MK	83	msg = nlmsg_alloc();
	84	if (!msg) {
	85	fprintf(stderr, "failed to allocate netlink msg\n");
	86	return -1;
	87	}
45c7212c JB	88
	89	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
	90	0, NL80211_CMD_NEW_INTERFACE, 0);
	91	if (dev)
	92	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
	93	if (phy)
	94	return -1; /* XXX TODO */
	95	NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, name);
	96	if (tpset)
	97	NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type);
	98
	99	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 \|\|
	100	(err = nl_wait_for_ack(state->nl_handle)) < 0) {
	101	nla_put_failure:
	102	fprintf(stderr, "failed to create interface: %d\n", err);
	103	nlmsg_free(msg);
	104	return -1;
	105	}
	106
	107	nlmsg_free(msg);
	108
	109	return 0;
	110	}
	111
3fcfe40e JB	112	static int handle_interface_del(struct nl80211_state *state,
	113	char phy, char dev, int argc, char **argv)
	114	{
	115	int err;
	116	struct nl_msg *msg;
	117
	118	if (argc) {
	119	fprintf(stderr, "too many arguments\n");
	120	return -1;
	121	}
	122
	123	msg = nlmsg_alloc();
	124	if (!msg)
	125	return -1;
	126
	127	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
	128	0, NL80211_CMD_DEL_INTERFACE, 0);
	129	if (!dev) {
	130	fprintf(stderr, "need device\n");
	131	nlmsg_free(msg);
	132	return -1;
	133	}
	134	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
	135
	136	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 \|\|
	137	(err = nl_wait_for_ack(state->nl_handle)) < 0) {
	138	nla_put_failure:
	139	fprintf(stderr, "failed to remove interface: %d\n", err);
	140	nlmsg_free(msg);
	141	return -1;
	142	}
	143
	144	nlmsg_free(msg);
	145
	146	return 0;
	147	}
	148
45c7212c JB	149	int handle_interface(struct nl80211_state *state,
	150	char phy, char dev, int argc, char **argv)
	151	{
	152	char *cmd = argv[0];
	153
2dfd6bfa AL	154	if (argc < 1) {
2dfd6bfa AL	155	fprintf(stderr, "you must specify an interface command\n");
45c7212c	156	return -1;
2dfd6bfa	157	}
45c7212c JB	158
	159	argc--;
	160	argv++;
	161
	162	if (strcmp(cmd, "add") == 0)
	163	return handle_interface_add(state, phy, dev, argc, argv);
3fcfe40e JB	164	else if (strcmp(cmd, "del") == 0)
3fcfe40e JB	165	return handle_interface_del(state, phy, dev, argc, argv);
45c7212c JB	166
	167	printf("invalid interface command %s\n", cmd);
	168	return -1;
	169	}