[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;
	} else if (strcmp(tpstr, "mp") == 0 ||
			strcmp(tpstr, "mesh") == 0) {
		*type = NL80211_IFTYPE_MESH_POINT;
		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;
	char *mesh_id = NULL;
	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) {
		if (strcmp(argv[0], "mesh_id") != 0) {
			fprintf(stderr, "option %s not supported\n", argv[0]);
			return -1;
		}
		argc--;
		argv++;

		if (!argc) {
			fprintf(stderr, "not enough arguments\n");
			return -1;
		}
		mesh_id = argv[0];
		argc--;
		argv++;
	}

	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 (mesh_id)
		NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(mesh_id), mesh_id);

	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;
3d1e8704 LCC	48	} else if (strcmp(tpstr, "mp") == 0 \|\|
	49	strcmp(tpstr, "mesh") == 0) {
	50	*type = NL80211_IFTYPE_MESH_POINT;
	51	return 1;
45c7212c JB	52	}
	53
	54
	55	fprintf(stderr, "invalid interface type %s\n", tpstr);
	56	return -1;
	57	}
	58
	59	static int handle_interface_add(struct nl80211_state *state,
	60	char phy, char dev, int argc, char **argv)
	61	{
2dfd6bfa	62	char *name;
3d1e8704	63	char *mesh_id = NULL;
45c7212c JB	64	enum nl80211_iftype type;
	65	int tpset, err;
	66	struct nl_msg *msg;
	67
	68	if (argc < 1) {
	69	fprintf(stderr, "not enough arguments\n");
	70	return -1;
	71	}
	72
2dfd6bfa	73	name = argv[0];
45c7212c JB	74	argc--;
	75	argv++;
	76
2dfd6bfa AL	77	tpset = get_if_type(&argc, &argv, &type);
	78	if (tpset == 0)
	79	fprintf(stderr, "you must specify an interface type\n");
	80	if (tpset <= 0)
	81	return -1;
45c7212c	82
3d1e8704 LCC	83	if (argc) {
	84	if (strcmp(argv[0], "mesh_id") != 0) {
	85	fprintf(stderr, "option %s not supported\n", argv[0]);
	86	return -1;
	87	}
	88	argc--;
	89	argv++;
	90
	91	if (!argc) {
	92	fprintf(stderr, "not enough arguments\n");
	93	return -1;
	94	}
	95	mesh_id = argv[0];
	96	argc--;
	97	argv++;
	98	}
	99
45c7212c JB	100	if (argc) {
	101	fprintf(stderr, "too many arguments\n");
	102	return -1;
	103	}
	104
1cdd9016 MK	105	msg = nlmsg_alloc();
	106	if (!msg) {
	107	fprintf(stderr, "failed to allocate netlink msg\n");
	108	return -1;
	109	}
45c7212c JB	110
	111	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
	112	0, NL80211_CMD_NEW_INTERFACE, 0);
	113	if (dev)
	114	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
	115	if (phy)
	116	return -1; /* XXX TODO */
	117	NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, name);
	118	if (tpset)
	119	NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type);
3d1e8704 LCC	120	if (mesh_id)
3d1e8704 LCC	121	NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(mesh_id), mesh_id);
45c7212c JB	122
	123	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 \|\|
	124	(err = nl_wait_for_ack(state->nl_handle)) < 0) {
	125	nla_put_failure:
	126	fprintf(stderr, "failed to create interface: %d\n", err);
	127	nlmsg_free(msg);
	128	return -1;
	129	}
	130
	131	nlmsg_free(msg);
	132
	133	return 0;
	134	}
	135
3fcfe40e JB	136	static int handle_interface_del(struct nl80211_state *state,
	137	char phy, char dev, int argc, char **argv)
	138	{
	139	int err;
	140	struct nl_msg *msg;
	141
	142	if (argc) {
	143	fprintf(stderr, "too many arguments\n");
	144	return -1;
	145	}
	146
	147	msg = nlmsg_alloc();
	148	if (!msg)
	149	return -1;
	150
	151	genlmsg_put(msg, 0, 0, genl_family_get_id(state->nl80211), 0,
	152	0, NL80211_CMD_DEL_INTERFACE, 0);
	153	if (!dev) {
	154	fprintf(stderr, "need device\n");
	155	nlmsg_free(msg);
	156	return -1;
	157	}
	158	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(dev));
	159
	160	if ((err = nl_send_auto_complete(state->nl_handle, msg)) < 0 \|\|
	161	(err = nl_wait_for_ack(state->nl_handle)) < 0) {
	162	nla_put_failure:
	163	fprintf(stderr, "failed to remove interface: %d\n", err);
	164	nlmsg_free(msg);
	165	return -1;
	166	}
	167
	168	nlmsg_free(msg);
	169
	170	return 0;
	171	}
	172
45c7212c JB	173	int handle_interface(struct nl80211_state *state,
	174	char phy, char dev, int argc, char **argv)
	175	{
	176	char *cmd = argv[0];
	177
2dfd6bfa AL	178	if (argc < 1) {
2dfd6bfa AL	179	fprintf(stderr, "you must specify an interface command\n");
45c7212c	180	return -1;
2dfd6bfa	181	}
45c7212c JB	182
	183	argc--;
	184	argv++;
	185
	186	if (strcmp(cmd, "add") == 0)
	187	return handle_interface_add(state, phy, dev, argc, argv);
3fcfe40e JB	188	else if (strcmp(cmd, "del") == 0)
3fcfe40e JB	189	return handle_interface_del(state, phy, dev, argc, argv);
45c7212c JB	190
	191	printf("invalid interface command %s\n", cmd);
	192	return -1;
	193	}