prframe.c

Linux Wireless LAN Project 的目标是开发一个完整的

*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_assocresp( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_assocresp_t				frame;
 	wlan_p80211_frame_fields_t		fixed_fields[TOTAL_MGMT_FIXED_FIELDS];
 	wlan_p80211_frame_fields_t		info_elements[TOTAL_MGMT_INFO_ELEMENTS];

	/* print 802.11 frame header */

	print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );

	/* print management frame body for this management frame subtype */

	memset( (void *)fixed_fields, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_FIXED_FIELDS));
	memset( (void *)info_elements, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_INFO_ELEMENTS));
	memset( (void *)&frame, 0, sizeof(wlan_fr_assocresp_t) );
	frame.buf = pbuf;
	/* decode functions assume the 4 trailing bytes for the FCS aren't
	   included in the length */
	frame.len = len - 4;

	wlan_mgmt_decode_assocresp( &frame );

	fixed_fields[MGMT_FF_CAP_INFO].exists = TRUE;
	fixed_fields[MGMT_FF_CAP_INFO].info = (void *)frame.cap_info;

	fixed_fields[MGMT_FF_STATUS].exists = TRUE;
	fixed_fields[MGMT_FF_STATUS].info = (void *)frame.status;

	fixed_fields[MGMT_FF_AID].exists = TRUE;
	fixed_fields[MGMT_FF_AID].info = (void *)frame.aid;

	info_elements[MGMT_IE_SUPP_RATES].exists = TRUE;
	info_elements[MGMT_IE_SUPP_RATES].info = (void *)frame.supp_rates;

	print_fixed_fields( fixed_fields, len );
	print_info_elements( info_elements, len );
}


/*----------------------------------------------------------------
*	print_mgmt_authen
*
*	This function decodes and prints management frames of subtype
*	authentication.
*
*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_authen( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_authen_t				frame;
 	wlan_p80211_frame_fields_t		fixed_fields[TOTAL_MGMT_FIXED_FIELDS];
 	wlan_p80211_frame_fields_t		info_elements[TOTAL_MGMT_INFO_ELEMENTS];

	/* print 802.11 frame header */

	print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );

	/* print management frame body for this management frame subtype */

	memset( (void *)fixed_fields, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_FIXED_FIELDS));
	memset( (void *)info_elements, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_INFO_ELEMENTS));
	memset( (void *)&frame, 0, sizeof(wlan_fr_authen_t) );
	frame.buf = pbuf;
	/* decode functions assume the 4 trailing bytes for the FCS aren't
	   included in the length */
	frame.len = len - 4;

	wlan_mgmt_decode_authen( &frame );

	fixed_fields[MGMT_FF_AUTH_ALG].exists = TRUE;
	fixed_fields[MGMT_FF_AUTH_ALG].info = (void *)frame.auth_alg;

	fixed_fields[MGMT_FF_AUTH_SEQ].exists = TRUE;
	fixed_fields[MGMT_FF_AUTH_SEQ].info = (void *)frame.auth_seq;

	fixed_fields[MGMT_FF_STATUS].exists = TRUE;
	fixed_fields[MGMT_FF_STATUS].info = (void *)frame.status;

	info_elements[MGMT_IE_CHALLENGE].exists = TRUE;
	info_elements[MGMT_IE_CHALLENGE].info = (void *)frame.challenge;

	print_fixed_fields( fixed_fields, len );
	print_info_elements( info_elements, len );
}


/*----------------------------------------------------------------
*	print_mgmt_beacon
*
*	This function decodes and prints management frames of subtype
*	beacon.
*
*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_beacon( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_beacon_t				frame;
 	wlan_p80211_frame_fields_t		fixed_fields[TOTAL_MGMT_FIXED_FIELDS];
 	wlan_p80211_frame_fields_t		info_elements[TOTAL_MGMT_INFO_ELEMENTS];

	if ( !opt_nobeacon )
	{
		/* print 802.11 frame header */
	
		print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );
	
		/* print management frame body for this management frame subtype */
	
		memset( (void *)fixed_fields, 0,
			(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_FIXED_FIELDS));
		memset( (void *)info_elements, 0,
			(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_INFO_ELEMENTS));
		memset( (void *)&frame, 0, sizeof(wlan_fr_beacon_t) );
		frame.buf = pbuf;
		/* decode functions assume the 4 trailing bytes for the FCS aren't
		   included in the length */
		frame.len = len - 4;
	
		wlan_mgmt_decode_beacon( &frame );
	
		fixed_fields[MGMT_FF_TS].exists = TRUE;
		fixed_fields[MGMT_FF_TS].info = (void *)frame.ts;
	
		fixed_fields[MGMT_FF_BCN_INT].exists = TRUE;
		fixed_fields[MGMT_FF_BCN_INT].info = (void *)frame.bcn_int;
	
		fixed_fields[MGMT_FF_CAP_INFO].exists = TRUE;
		fixed_fields[MGMT_FF_CAP_INFO].info = (void *)frame.cap_info;
	
		info_elements[MGMT_IE_SSID].exists = TRUE;
		info_elements[MGMT_IE_SSID].info = (void *)frame.ssid;
	
		info_elements[MGMT_IE_SUPP_RATES].exists = TRUE;
		info_elements[MGMT_IE_SUPP_RATES].info = (void *)frame.supp_rates;
	
		info_elements[MGMT_IE_FH_PARMS].exists = TRUE;
		info_elements[MGMT_IE_FH_PARMS].info = (void *)frame.fh_parms;
	
		info_elements[MGMT_IE_DS_PARMS].exists = TRUE;
		info_elements[MGMT_IE_DS_PARMS].info = (void *)frame.ds_parms;
	
		info_elements[MGMT_IE_CF_PARMS].exists = TRUE;
		info_elements[MGMT_IE_CF_PARMS].info = (void *)frame.cf_parms;
	
		info_elements[MGMT_IE_IBSS_PARMS].exists = TRUE;
		info_elements[MGMT_IE_IBSS_PARMS].info = (void *)frame.ibss_parms;
	
		info_elements[MGMT_IE_TIM].exists = TRUE;
		info_elements[MGMT_IE_TIM].info = (void *)frame.tim;
	
		print_fixed_fields( fixed_fields, len );
		print_info_elements( info_elements, len );
	}
}


/*----------------------------------------------------------------
*	print_mgmt_deauthen
*
*	This function decodes and prints management frames of subtype
*	deauthentication.
*
*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_deauthen( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_deauthen_t				frame;
 	wlan_p80211_frame_fields_t		fixed_fields[TOTAL_MGMT_FIXED_FIELDS];

	/* print 802.11 frame header */

	print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );

	/* print management frame body for this management frame subtype */

	memset( (void *)fixed_fields, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_FIXED_FIELDS));
	memset( (void *)&frame, 0, sizeof(wlan_fr_deauthen_t) );
	frame.buf = pbuf;
	/* decode functions assume the 4 trailing bytes for the FCS aren't
	   included in the length */
	frame.len = len - 4;

	wlan_mgmt_decode_deauthen( &frame );

	fixed_fields[MGMT_FF_REASON].exists = TRUE;
	fixed_fields[MGMT_FF_REASON].info = (void *)frame.reason;

	print_fixed_fields( fixed_fields, len );
}


/*----------------------------------------------------------------
*	print_mgmt_disassoc
*
*	This function decodes and prints management frames of subtype
*	disassociation.
*
*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_disassoc( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_disassoc_t				frame;
 	wlan_p80211_frame_fields_t		fixed_fields[TOTAL_MGMT_FIXED_FIELDS];

	/* print 802.11 frame header */

	print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );

	/* print management frame body for this management frame subtype */

	memset( (void *)fixed_fields, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_FIXED_FIELDS));
	memset( (void *)&frame, 0, sizeof(wlan_fr_disassoc_t) );
	frame.buf = pbuf;
	/* decode functions assume the 4 trailing bytes for the FCS aren't
	   included in the length */
	frame.len = len - 4;

	wlan_mgmt_decode_disassoc( &frame );

	fixed_fields[MGMT_FF_REASON].exists = TRUE;
	fixed_fields[MGMT_FF_REASON].info = (void *)frame.reason;

	print_fixed_fields( fixed_fields, len );
}


/*----------------------------------------------------------------
*	print_mgmt_ibssatim
*
*	This function decodes and prints management frames of subtype
*	ibss atim.
*
*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_ibssatim( UINT8 *pbuf, int index, UINT16 len )
{
	/* print 802.11 frame header */

	print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );

	/* print management frame body for this management frame subtype */

	return;
}


/*----------------------------------------------------------------
*	print_mgmt_probereq
*
*	This function decodes and prints management frames of subtype
*	probe request.
*
*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_probereq( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_probereq_t				frame;
 	wlan_p80211_frame_fields_t		info_elements[TOTAL_MGMT_INFO_ELEMENTS];

	/* print 802.11 frame header */

	print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );

	/* print management frame body for this management frame subtype */

	memset( (void *)info_elements, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_INFO_ELEMENTS));
	memset( (void *)&frame, 0, sizeof(wlan_fr_probereq_t) );
	frame.buf = pbuf;
	/* decode functions assume the 4 trailing bytes for the FCS aren't
	   included in the length */
	frame.len = len - 4;

	wlan_mgmt_decode_probereq( &frame );

	info_elements[MGMT_IE_SSID].exists = TRUE;
	info_elements[MGMT_IE_SSID].info = (void *)frame.ssid;

	info_elements[MGMT_IE_SUPP_RATES].exists = TRUE;
	info_elements[MGMT_IE_SUPP_RATES].info = (void *)frame.supp_rates;

	print_info_elements( info_elements, len );
}


/*----------------------------------------------------------------
*	print_mgmt_proberesp
*
*	This function decodes and prints management frames of subtype
*	probe response.
*
*	Arguments:
*		pbuf - pointer to the frame buffer
*		index	- index into the global array of frame types for a
*		        particular frame type and subtype
*		len	- the number of bytes in the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_mgmt_proberesp( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_proberesp_t				frame;
 	wlan_p80211_frame_fields_t		fixed_fields[TOTAL_MGMT_FIXED_FIELDS];
 	wlan_p80211_frame_fields_t		info_elements[TOTAL_MGMT_INFO_ELEMENTS];

	/* print 802.11 frame header */

	print_80211_mgmt_header( (p80211_hdr_t *)pbuf, index, len );

	/* print management frame body for this management frame subtype */

	memset( (void *)fixed_fields, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_FIXED_FIELDS));
	memset( (void *)info_elements, 0,
		(sizeof(wlan_p80211_frame_fields_t) * TOTAL_MGMT_INFO_ELEMENTS));
	memset( (void *)&frame, 0, sizeof(wlan_fr_proberesp_t) );
	frame.buf = pbuf;
	/* decode functions assume the 4 trailing bytes for the FCS aren't
	   included in the length */
	frame.len = len - 4;

	wlan_mgmt_decode_proberesp( &frame );

	fixed_fields[MGMT_FF_TS].exists = TRUE;
	fixed_fields[MGMT_FF_TS].info = (void *)frame.ts;

	fixed_fields[MGMT_FF_BCN_INT].exists = TRUE;
	fixed_fields[MGMT_FF_BCN_INT].info = (void *)frame.bcn_int;

	fixed_fields[MGMT_FF_CAP_INFO].exists = TRUE;
	fixed_fields[MGMT_FF_CAP_INFO].info = (void *)frame.cap_info;

	info_elements[MGMT_IE_SSID].exists = TRUE;
	info_elements[MGMT_IE_SSID].info = (void *)frame.ssid;

	info_elements[MGMT_IE_SUPP_RATES].exists = TRUE;
	info_elements[MGMT_IE_SUPP_RATES].info = (void *)frame.supp_rates;

	info_elements[MGMT_IE_FH_PARMS].exists = TRUE;
	info_elements[MGMT_IE_FH_PARMS].info = (void *)frame.fh_parms;

	info_elements[MGMT_IE_DS_PARMS].exists = TRUE;
	info_elements[MGMT_IE_DS_PARMS].info = (void *)frame.ds_parms;

	info_elements[MGMT_IE_CF_PARMS].exists = TRUE;
	info_elements[MGMT_IE_CF_PARMS].info = (void *)frame.cf_parms;