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/** @file
*
* Copyright 2012, Pontus Fuchs <pontus.fuchs@gmail.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __WS80211_UTILS_H__
#define __WS80211_UTILS_H__
#include <wireshark.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
enum ws80211_channel_type {
WS80211_CHAN_NO_HT,
WS80211_CHAN_HT20,
WS80211_CHAN_HT40MINUS,
WS80211_CHAN_HT40PLUS,
WS80211_CHAN_VHT80,
WS80211_CHAN_VHT80P80,
WS80211_CHAN_VHT160
};
#define CHAN_NO_HT "NOHT"
#define CHAN_HT20 "HT20"
#define CHAN_HT40MINUS "HT40-"
#define CHAN_HT40PLUS "HT40+"
#define CHAN_VHT80 "VHT80"
#define CHAN_VHT80P80 "VHT80+80"
#define CHAN_VHT160 "VHT160"
/* XXX This doesn't match AirpcapValidationType. Should it? */
enum ws80211_fcs_validation {
WS80211_FCS_ALL,
WS80211_FCS_VALID,
WS80211_FCS_INVALID
};
struct ws80211_interface
{
char *ifname;
bool can_set_freq;
bool can_check_fcs;
GArray *frequencies; /* Array of uint32_t? */
int channel_types; /* Union for all bands */
int cap_monitor;
};
struct ws80211_iface_info {
int current_freq;
enum ws80211_channel_type current_chan_type;
int current_center_freq1;
int current_center_freq2;
enum ws80211_fcs_validation current_fcs_validation;
};
/** Initialize the 802.11 environment.
* On Linux this initializes an nl80211_state struct.
* On Windows this checks the AirPcap status. It does *not* load the
* AirPcap DLL. That happens when the program starts.
*
* @return WS80211_INIT_OK on success, WS80211_INIT_NOT_SUPPORTED if the
* 802.11 environment isn't supported, or the negative of an errno value
* on failure.
*/
#define WS80211_INIT_OK 0
#define WS80211_INIT_NOT_SUPPORTED 1
int ws80211_init(void);
/** Build a list of 802.11 interfaces.
*
* @return A GArray of pointers to struct ws80211_interface on success, NULL on failure.
*/
/* XXX Should we make this an array of structs instead of an array of struct pointers?
* It'd save a bit of mallocing and freeing. */
GArray* ws80211_find_interfaces(void);
int ws80211_get_iface_info(const char *name, struct ws80211_iface_info *iface_info);
/** Free an interface list.
*
* @param interfaces A list of interfaces created with ws80211_find_interfaces().
*/
void ws80211_free_interfaces(GArray *interfaces);
/** Set the frequency and channel width for an interface.
*
* @param name The interface name.
* @param freq The frequency in MHz.
* @param chan_type The HT channel type (no, 20Mhz, 40Mhz...).
* @param center_freq The center frequency in MHz (if 80MHz, 80+80MHz or 160MHz).
* @param center_freq2 The 2nd center frequency in MHz (if 80+80MHz).
* @return Zero on success, nonzero on failure.
*/
int ws80211_set_freq(const char *name, uint32_t freq, int chan_type, uint32_t _U_ center_freq, uint32_t _U_ center_freq2);
int ws80211_str_to_chan_type(const char *s);
const char *ws80211_chan_type_to_str(int type);
/** Check to see if we have FCS filtering.
*
* @return true if FCS filtering is supported on this platform.
*/
bool ws80211_has_fcs_filter(void);
/** Set the FCS validation behavior for an interface.
*
* @param name The interface name.
* @param fcs_validation The desired validation behavior.
* @return Zero on success, nonzero on failure.
*/
int ws80211_set_fcs_validation(const char *name, enum ws80211_fcs_validation fcs_validation);
/** Get the path to a helper application.
* Return the path to a separate 802.11 helper application, e.g.
* the AirPcap control panel or the GNOME Network Manager.
*
* @return The path to the helper on success, NULL on failure.
*/
const char *ws80211_get_helper_path(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __WS80211_UTILS_H__ */
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