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/* $OpenBSD: hostapd.h,v 1.12 2005/12/01 01:11:30 reyk Exp $ */
/*
* Copyright (c) 2004, 2005 Reyk Floeter <reyk@vantronix.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _HOSTAPD_H
#define _HOSTAPD_H
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/tree.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <event.h>
#include <syslog.h>
#include <net80211/ieee80211.h>
#include <net80211/ieee80211_ioctl.h>
/*
* hostapd (IAPP) <-> Host AP (APME)
*/
struct hostapd_node {
u_int8_t ni_macaddr[IEEE80211_ADDR_LEN];
u_int8_t ni_bssid[IEEE80211_ADDR_LEN];
u_int32_t ni_associd;
u_int16_t ni_capinfo;
u_int16_t ni_flags;
u_int16_t ni_rxseq;
u_int16_t ni_rssi;
};
/*
* IAPP -> switches (LLC)
*/
struct hostapd_llc {
struct ether_header x_hdr;
struct llc x_llc;
} __packed;
#define IAPP_LLC LLC_XID
#define IAPP_LLC_XID 0x81
#define IAPP_LLC_CLASS 1
#define IAPP_LLC_WINDOW 1 << 1
/*
* hostapd configuration
*/
struct hostapd_counter {
u_int64_t cn_tx_llc; /* sent LLC messages */
u_int64_t cn_rx_iapp; /* received IAPP messages */
u_int64_t cn_tx_iapp; /* sent IAPP messages */
u_int64_t cn_rx_apme; /* received Host AP messages */
u_int64_t cn_tx_apme; /* sent Host AP messages */
};
#define HOSTAPD_ENTRY_MASK_ADD(_a, _m) do { \
(_a)[0] &= (_m)[0]; \
(_a)[1] &= (_m)[1]; \
(_a)[2] &= (_m)[2]; \
(_a)[3] &= (_m)[3]; \
(_a)[4] &= (_m)[4]; \
(_a)[5] &= (_m)[5]; \
} while (0);
#define HOSTAPD_ENTRY_MASK_MATCH(_e, _b) ( \
((_e)->e_lladdr[0] == ((_b)[0] & (_e)->e_addr.a_mask[0])) && \
((_e)->e_lladdr[1] == ((_b)[1] & (_e)->e_addr.a_mask[1])) && \
((_e)->e_lladdr[2] == ((_b)[2] & (_e)->e_addr.a_mask[2])) && \
((_e)->e_lladdr[3] == ((_b)[3] & (_e)->e_addr.a_mask[3])) && \
((_e)->e_lladdr[4] == ((_b)[4] & (_e)->e_addr.a_mask[4])) && \
((_e)->e_lladdr[5] == ((_b)[5] & (_e)->e_addr.a_mask[5])) \
)
struct hostapd_entry {
u_int8_t e_lladdr[IEEE80211_ADDR_LEN];
u_int8_t e_flags;
#define HOSTAPD_ENTRY_F_LLADDR 0x00
#define HOSTAPD_ENTRY_F_MASK 0x01
#define HOSTAPD_ENTRY_F_IPV4 0x02
union {
u_int8_t a_mask[IEEE80211_ADDR_LEN];
struct in_addr a_ipv4;
} e_addr;
RB_ENTRY(hostapd_entry) e_nodes;
TAILQ_ENTRY(hostapd_entry) e_entries;
};
#define e_mask e_addr.a_mask
#define e_ipv4 e_addr.a_ipv4
#define HOSTAPD_TABLE_NAMELEN 32
RB_HEAD(hostapd_tree, hostapd_entry);
struct hostapd_table {
char t_name[HOSTAPD_TABLE_NAMELEN];
u_int8_t t_flags;
#define HOSTAPD_TABLE_F_CONST 0x01
struct hostapd_tree t_tree;
TAILQ_HEAD(, hostapd_entry) t_mask_head;
TAILQ_ENTRY(hostapd_table) t_entries;
};
struct hostapd_ieee80211_frame {
u_int8_t i_fc[2];
u_int8_t i_dur[2];
u_int8_t i_from[IEEE80211_ADDR_LEN];
u_int8_t i_to[IEEE80211_ADDR_LEN];
u_int8_t i_bssid[IEEE80211_ADDR_LEN];
u_int8_t i_seq[2];
void *i_data;
u_int i_data_len;
};
enum hostapd_action {
HOSTAPD_ACTION_NONE = 0,
HOSTAPD_ACTION_LOG = 1,
HOSTAPD_ACTION_RADIOTAP = 2,
HOSTAPD_ACTION_FRAME = 3,
HOSTAPD_ACTION_ADDNODE = 4,
HOSTAPD_ACTION_DELNODE = 5,
HOSTAPD_ACTION_RESEND = 6
};
struct hostapd_action_data {
union {
struct hostapd_ieee80211_frame u_frame;
u_int8_t u_lladdr[IEEE80211_ADDR_LEN];
} a_data;
u_int16_t a_flags;
#define HOSTAPD_ACTION_F_REF_FROM 0x0001
#define HOSTAPD_ACTION_F_REF_TO 0x0002
#define HOSTAPD_ACTION_F_REF_BSSID 0x0004
#define HOSTAPD_ACTION_F_REF_RANDOM 0x0008
#define HOSTAPD_ACTION_F_REF_FROM_M 0x000f
#define HOSTAPD_ACTION_F_REF_FROM_S 0
#define HOSTAPD_ACTION_F_REF_TO_M 0x00f0
#define HOSTAPD_ACTION_F_REF_TO_S 4
#define HOSTAPD_ACTION_F_REF_BSSID_M 0x0f00
#define HOSTAPD_ACTION_F_REF_BSSID_S 8
#define HOSTAPD_ACTION_F_REF_M 0x0fff
#define HOSTAPD_ACTION_F_OPT_DIR_AUTO 0x1000
#define HOSTAPD_ACTION_F_OPT_LLADDR 0x2000
#define HOSTAPD_ACTION_F_OPT_TABLE 0x4000
};
#define a_frame a_data.u_frame
#define a_lladdr a_data.u_lladdr
struct hostapd_frame {
struct hostapd_ieee80211_frame f_frame;
u_int32_t f_flags;
#define HOSTAPD_FRAME_F_TYPE 0x00000001
#define HOSTAPD_FRAME_F_TYPE_N 0x00000002
#define HOSTAPD_FRAME_F_SUBTYPE 0x00000004
#define HOSTAPD_FRAME_F_SUBTYPE_N 0x00000008
#define HOSTAPD_FRAME_F_DIR 0x00000010
#define HOSTAPD_FRAME_F_DIR_N 0x00000020
#define HOSTAPD_FRAME_F_FROM 0x00000040
#define HOSTAPD_FRAME_F_FROM_N 0x00000080
#define HOSTAPD_FRAME_F_FROM_TABLE 0x00000100
#define HOSTAPD_FRAME_F_FROM_M 0x000001c0
#define HOSTAPD_FRAME_F_TO 0x00000200
#define HOSTAPD_FRAME_F_TO_N 0x00000400
#define HOSTAPD_FRAME_F_TO_TABLE 0x00000800
#define HOSTAPD_FRAME_F_TO_M 0x00000e00
#define HOSTAPD_FRAME_F_BSSID 0x00001000
#define HOSTAPD_FRAME_F_BSSID_N 0x00002000
#define HOSTAPD_FRAME_F_BSSID_TABLE 0x00004000
#define HOSTAPD_FRAME_F_BSSID_M 0x00007000
#define HOSTAPD_FRAME_F_APME 0x00008000
#define HOSTAPD_FRAME_F_APME_N 0x00010000
#define HOSTAPD_FRAME_F_APME_M 0x00018000
#define HOSTAPD_FRAME_F_M 0x0fffffff
#define HOSTAPD_FRAME_F_RET_OK 0x00000000
#define HOSTAPD_FRAME_F_RET_QUICK 0x10000000
#define HOSTAPD_FRAME_F_RET_SKIP 0x20000000
#define HOSTAPD_FRAME_F_RET_M 0xf0000000
#define HOSTAPD_FRAME_F_RET_S 28
#define HOSTAPD_FRAME_TABLE \
(HOSTAPD_FRAME_F_FROM_TABLE | HOSTAPD_FRAME_F_TO_TABLE | \
HOSTAPD_FRAME_F_BSSID_TABLE)
#define HOSTAPD_FRAME_N \
(HOSTAPD_FRAME_F_FROM_N | HOSTAPD_FRAME_F_TO_N | \
HOSTAPD_FRAME_F_BSSID_N)
struct hostapd_apme *f_apme;
struct hostapd_table *f_from, *f_to, *f_bssid;
struct timeval f_limit, f_then, f_last;
long f_rate, f_rate_intval;
long f_rate_cnt, f_rate_delay;
enum hostapd_action f_action;
u_int32_t f_action_flags;
#define HOSTAPD_ACTION_VERBOSE 0x00000001
struct hostapd_action_data f_action_data;
TAILQ_ENTRY(hostapd_frame) f_entries;
};
struct hostapd_apme {
int a_raw;
u_int a_rawlen;
struct event a_ev;
char a_iface[IFNAMSIZ];
u_int8_t a_bssid[IEEE80211_ADDR_LEN];
void *a_cfg;
TAILQ_ENTRY(hostapd_apme) a_entries;
};
struct hostapd_iapp {
u_int16_t i_cnt;
int i_raw;
char i_iface[IFNAMSIZ];
int i_udp;
struct event i_udp_ev;
u_int16_t i_udp_port;
struct sockaddr_in i_addr;
struct sockaddr_in i_broadcast;
struct sockaddr_in i_multicast;
};
struct hostapd_config {
int c_apme_ctl;
u_int c_apme_dlt;
struct hostapd_iapp c_iapp;
u_int8_t c_flags;
#define HOSTAPD_CFG_F_APME 0x01
#define HOSTAPD_CFG_F_IAPP 0x02
#define HOSTAPD_CFG_F_IAPP_PASSIVE 0x04
#define HOSTAPD_CFG_F_RAW 0x08
#define HOSTAPD_CFG_F_UDP 0x10
#define HOSTAPD_CFG_F_BRDCAST 0x20
#define HOSTAPD_CFG_F_PRIV 0x40
struct event c_priv_ev;
char c_config[MAXPATHLEN];
u_int c_verbose;
u_int c_debug;
u_int c_id;
struct hostapd_counter c_stats;
TAILQ_HEAD(, hostapd_apme) c_apmes;
TAILQ_HEAD(, hostapd_table) c_tables;
TAILQ_HEAD(, hostapd_frame) c_frames;
};
#define HOSTAPD_USER "_hostapd"
#define HOSTAPD_CONFIG "/etc/hostapd.conf"
#define HOSTAPD_DLT DLT_IEEE802_11
#define HOSTAPD_LOG 0
#define HOSTAPD_LOG_VERBOSE 1
#define HOSTAPD_LOG_DEBUG 2
#define PRINTF hostapd_printf
#define etheraddr_string(_s) ether_ntoa((struct ether_addr*)_s)
#define TTEST2(var, l) ( \
snapend - (l) <= snapend && (const u_char *)&(var) <= snapend - (l) \
)
#define TTEST(var) TTEST2(var, sizeof(var))
#define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
#define TCHECK(var) TCHECK2(var, sizeof(var))
__BEGIN_DECLS
void hostapd_log(u_int, const char *, ...);
void hostapd_printf(const char *, ...);
void hostapd_fatal(const char *, ...);
int hostapd_bpf_open(u_int);
void hostapd_cleanup(struct hostapd_config *);
int hostapd_check_file_secrecy(int, const char *);
void hostapd_randval(u_int8_t *, const u_int)
__attribute__((__bounded__(__buffer__, 1, 2)));
struct hostapd_table *hostapd_table_add(struct hostapd_config *,
const char *);
struct hostapd_table *hostapd_table_lookup(struct hostapd_config *,
const char *);
struct hostapd_entry *hostapd_entry_add(struct hostapd_table *,
u_int8_t *);
struct hostapd_entry *hostapd_entry_lookup(struct hostapd_table *,
u_int8_t *);
void hostapd_entry_update(struct hostapd_table *,
struct hostapd_entry *);
int hostapd_entry_cmp(struct hostapd_entry *, struct hostapd_entry *);
RB_PROTOTYPE(hostapd_tree, hostapd_entry, e_nodes, hostapd_entry_cmp);
int hostapd_parse_file(struct hostapd_config *);
int hostapd_parse_symset(char *);
void hostapd_priv_init(struct hostapd_config *);
int hostapd_priv_llc_xid(struct hostapd_config *, struct hostapd_node *);
void hostapd_priv_apme_bssid(struct hostapd_apme *);
int hostapd_priv_apme_getnode(struct hostapd_apme *,
struct hostapd_node *);
int hostapd_priv_apme_setnode(struct hostapd_apme *,
struct hostapd_node *node, int);
void hostapd_apme_init(struct hostapd_apme *);
int hostapd_apme_deauth(struct hostapd_apme *);
int hostapd_apme_add(struct hostapd_config *, const char *);
void hostapd_apme_term(struct hostapd_apme *);
struct hostapd_apme *hostapd_apme_lookup(struct hostapd_config *,
const char *);
void hostapd_apme_input(int, short, void *);
int hostapd_apme_output(struct hostapd_apme *,
struct hostapd_ieee80211_frame *);
int hostapd_apme_addnode(struct hostapd_apme *,
struct hostapd_node *node);
int hostapd_apme_delnode(struct hostapd_apme *,
struct hostapd_node *node);
int hostapd_apme_offset(struct hostapd_apme *, u_int8_t *,
const u_int);
void hostapd_iapp_init(struct hostapd_config *);
void hostapd_iapp_term(struct hostapd_config *);
int hostapd_iapp_add_notify(struct hostapd_apme *,
struct hostapd_node *);
int hostapd_iapp_radiotap(struct hostapd_apme *,
u_int8_t *, const u_int);
void hostapd_iapp_input(int, short, void *);
void hostapd_llc_init(struct hostapd_config *);
int hostapd_llc_send_xid(struct hostapd_config *, struct hostapd_node *);
int hostapd_handle_input(struct hostapd_apme *, u_int8_t *, u_int);
void hostapd_print_ieee80211(u_int, u_int, u_int8_t *, u_int);
__END_DECLS
#endif /* _HOSTAPD_H */
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