prframe.c

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

	info_elements[MGMT_IE_IBSS_PARMS].exists = TRUE;
	info_elements[MGMT_IE_IBSS_PARMS].info = (void *)frame.ibss_parms;

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


/*----------------------------------------------------------------
*	print_mgmt_reassocreq
*
*	This function decodes and prints management frames of subtype
*	reassociation 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_reassocreq( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_reassocreq_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_reassocreq_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_reassocreq( &frame );

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

	fixed_fields[MGMT_FF_LISTEN_INT].exists = TRUE;
	fixed_fields[MGMT_FF_LISTEN_INT].info = (void *)frame.listen_int;

	fixed_fields[MGMT_FF_CURR_AP].exists = TRUE;
	fixed_fields[MGMT_FF_CURR_AP].info = (void *)frame.curr_ap;

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


/*----------------------------------------------------------------
*	print_mgmt_reassocresp
*
*	This function decodes and prints management frames of subtype
*	reassociation 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_reassocresp( UINT8 *pbuf, int index, UINT16 len )
{
	wlan_fr_reassocresp_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_reassocresp_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_reassocresp( &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_fixed_fields
*
*	This function looks in the array of fixed fields and prints the
*	information for only those fixed fields that exist.	
*
*	Arguments:
*		ff - array of all the fixed field types and associated info
*		len - length of the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_fixed_fields( wlan_p80211_frame_fields_t  *ff, UINT16 len )
{
	int		i;
	UINT8	*byte;
	UINT16	info;

	for ( i = 0; i < TOTAL_MGMT_FIXED_FIELDS; i++ )
	{
		switch( i )
		{
			case	MGMT_FF_AUTH_ALG:
					if ( ff[MGMT_FF_AUTH_ALG].exists )
					{
						printf("|authAlg=%u",
						*((UINT16 *)ff[MGMT_FF_AUTH_ALG].info));
					}
					break;
			case	MGMT_FF_AUTH_SEQ:
					if ( ff[MGMT_FF_AUTH_SEQ].exists )
					{
						printf("|authSeq=%u",
						*((UINT16 *)ff[MGMT_FF_AUTH_SEQ].info));
					}
					break;
			case	MGMT_FF_BCN_INT:
					if ( ff[MGMT_FF_BCN_INT].exists )
					{
						printf("|bcn_int=%u",
						*((UINT16 *)ff[MGMT_FF_BCN_INT].info));
					}
					break;
			case	MGMT_FF_CAP_INFO:
					if ( ff[MGMT_FF_CAP_INFO].exists )
					{
						info = *((UINT16 *)ff[MGMT_FF_CAP_INFO].info);
						printf("|capInfo=0x%02x", info);
						if ( WLAN_GET_MGMT_CAP_INFO_ESS( info ) )
							printf(",capInfo_ess");
						if ( WLAN_GET_MGMT_CAP_INFO_IBSS( info ) )
							printf(",capInfo_ibss");
						if ( WLAN_GET_MGMT_CAP_INFO_CFPOLLABLE( info ) )
							printf(",capInfo_cfpollable");
						if ( WLAN_GET_MGMT_CAP_INFO_CFPOLLREQ( info ) )
							printf(",capInfo_cfpollreq");
						if ( WLAN_GET_MGMT_CAP_INFO_PRIVACY( info ) )
							printf(",capInfo_privacy");
					}
					break;
			case	MGMT_FF_CURR_AP:
					if ( ff[MGMT_FF_CURR_AP].exists )
					{
						byte = (UINT8 *)ff[MGMT_FF_CURR_AP].info;
						printf("|currAPadd=%02x:%02x:%02x:%02x:%02x:%02x",
						*byte, *(byte + 1), *(byte + 2),
						*(byte + 3), *(byte + 4), *(byte + 5) );
					}
					break;
			case	MGMT_FF_LISTEN_INT:
					if ( ff[MGMT_FF_LISTEN_INT].exists )
					{
						printf("|listenInt=%u",
						*((UINT16 *)ff[MGMT_FF_LISTEN_INT].info));
					}
					break;
			case	MGMT_FF_REASON:
					if ( ff[MGMT_FF_REASON].exists )
					{
						printf("|reason=%u",
						*((UINT16 *)ff[MGMT_FF_REASON].info));
					}
					break;
			case	MGMT_FF_AID:
					if ( ff[MGMT_FF_AID].exists )
					{
						printf("|aid=%u",
						*((UINT16 *)ff[MGMT_FF_AID].info));
					}
					break;
			case	MGMT_FF_STATUS:
					if ( ff[MGMT_FF_STATUS].exists )
					{
						printf("|status=%u",
						*((UINT16 *)ff[MGMT_FF_STATUS].info));
					}
					break;
			case	MGMT_FF_TS:
					if ( ff[MGMT_FF_TS].exists )
					{
						printf("|ts=0x");
						byte = (UINT8 *)ff[MGMT_FF_TS].info;
						printf("%02x%02x%02x%02x%02x%02x%02x%02x", *byte,
							*(byte+1), *(byte+2), *(byte+3), *(byte+4),
							*(byte+5), *(byte+6), *(byte+7));
					}
					break;
		}
	}
	printf("\n");
}


/*----------------------------------------------------------------
*	print_info_elements
*
*	This function looks in the array of information elements and prints the
*	information for only those information elements that exist.	
*
*	Arguments:
*		ie - array of all the information element types and associated info
*		len - length of the frame
*
*	returns: nothing
*
----------------------------------------------------------------*/
void print_info_elements( wlan_p80211_frame_fields_t  *ie, UINT16 len )
{
	int		index;
	int		i;
	UINT16	n;

	for ( index = 0; index < TOTAL_MGMT_INFO_ELEMENTS; index++ )
	{
		switch ( index )
		{
			case MGMT_IE_SSID:
				if ( ie[MGMT_IE_SSID].exists )
				{
					wlan_ie_ssid_t	*info;

					info = (wlan_ie_ssid_t *)(ie[MGMT_IE_SSID].info);
					if ( info != NULL )
					{
						char	ssid_str[ WLAN_SSID_MAXLEN + 2 ];

						n = info->len;
						printf("ssid:elemID=%u,len=%u,", info->eid, n );
						memcpy( (void *)ssid_str, (void *)info->ssid, n );
						ssid_str[n] = '\0';
						printf("%s\n", ssid_str );
					}
				}
				break;
			case MGMT_IE_SUPP_RATES:
				if ( ie[MGMT_IE_SUPP_RATES].exists )
				{
					wlan_ie_supp_rates_t	*info;

					info = (wlan_ie_supp_rates_t *)(ie[MGMT_IE_SUPP_RATES].info);
					if (info != NULL)
					{
						n = info->len;
						printf("suppRates:elemID=%u,len=%u,0x", info->eid, n);
						for ( i = 0; i < n; i++ )
						{
							printf("%02x", info->rates[i]);
						}
						printf("\n");
					}
				}
				break;
			case MGMT_IE_FH_PARMS:
				if ( ie[MGMT_IE_FH_PARMS].exists )
				{
					wlan_ie_fh_parms_t	*info;

					info = (wlan_ie_fh_parms_t *)(ie[MGMT_IE_FH_PARMS].info);
					if (info != NULL)
					{
						printf("fhParms:elemID=%u,len=%u,dwell=%u",
							info->eid, info->len, info->dwell);
						printf("hopset=%u,hoppattern=%u,hopindex=%u\n",
							info->hopset, info->hoppattern, info->hopindex);
					}
				}
				break;
			case MGMT_IE_DS_PARMS:
				if ( ie[MGMT_IE_DS_PARMS].exists )
				{
					wlan_ie_ds_parms_t	*info;

					info = (wlan_ie_ds_parms_t *)(ie[MGMT_IE_DS_PARMS].info);
					if (info != NULL)
					{
						printf("dsParms:elemID=%u,len=%u,currChannel=%u\n",
							info->eid, info->len, info->curr_ch);
					}
				}
				break;
			case MGMT_IE_CF_PARMS:
				if ( ie[MGMT_IE_CF_PARMS].exists )
				{
					wlan_ie_cf_parms_t	*info;

					info = (wlan_ie_cf_parms_t *)(ie[MGMT_IE_CF_PARMS].info);
					if (info != NULL)
					{
						printf("cfParms:elemID=%u,len=%u,cfpCnt=%u",
							info->eid, info->len, info->cfp_cnt);
						printf("cfpPeriod=%u,cfpMaxdur=%u,cfpDurRemain=%u\n",
							info->cfp_period, info->cfp_maxdur,
							info->cfp_durremaining );
					}
				}
				break;
			case MGMT_IE_TIM:
				if ( ie[MGMT_IE_TIM].exists )
				{
					wlan_ie_tim_t	*info;

					info = (wlan_ie_tim_t *)(ie[MGMT_IE_TIM].info);
					if (info != NULL)
					{
						n = info->len;
						printf("tim:elemID=%u,len=%u,dtimCnt=%u,",
							info->eid, n, info->dtim_cnt);
						printf("dtimPer=%u,bitmapCtl=%u,virtBitmap=0x",
							info->dtim_period, info->bitmap_ctl);

						n = n - 3; 

						for ( i = 0; i < n; i++ )
						{
							printf("%02x", info->virt_bm[i]);
						}
						printf("\n");
					}
				}
				break;
			case MGMT_IE_IBSS_PARMS:
				if ( ie[MGMT_IE_IBSS_PARMS].exists )
				{
					wlan_ie_ibss_parms_t	*info;

					info=(wlan_ie_ibss_parms_t *)(ie[MGMT_IE_IBSS_PARMS].info);
					if (info != NULL)
					{
						printf("ibssParms:elemID=%u,len=%u,atimWin=%u\n",
							info->eid, info->len, info->atim_win);
					}
				}
				break;
			case MGMT_IE_CHALLENGE:
				if ( ie[MGMT_IE_CHALLENGE].exists )
				{
					wlan_ie_challenge_t	*info;

					info = (wlan_ie_challenge_t *)(ie[MGMT_IE_CHALLENGE].info);
					if (info != NULL)
					{
						n = info->len;
						printf("ChallengeText:elemID=%u,len=%u,challenge=0x\n",
							info->eid, n );
						for ( i = 0; i < n; i++ )
						{
							printf("%02x", info->challenge[i]);
						}
					}
				}
				break;
		}
	}
}