* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-802_11.c,v 1.27 2003-11-27 02:51:04 guy Exp $ (LBL)";
-#endif
+/* \summary: IEEE 802.11 printer */
#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
#endif
-#include <tcpdump-stdinc.h>
+#include "netdissect-stdinc.h"
-#include <stdio.h>
-#include <pcap.h>
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
-#include "ethertype.h"
#include "extract.h"
-#include "ieee802_11.h"
+#include "cpack.h"
+
+
+/* Lengths of 802.11 header components. */
+#define IEEE802_11_FC_LEN 2
+#define IEEE802_11_DUR_LEN 2
+#define IEEE802_11_DA_LEN 6
+#define IEEE802_11_SA_LEN 6
+#define IEEE802_11_BSSID_LEN 6
+#define IEEE802_11_RA_LEN 6
+#define IEEE802_11_TA_LEN 6
+#define IEEE802_11_ADDR1_LEN 6
+#define IEEE802_11_SEQ_LEN 2
+#define IEEE802_11_CTL_LEN 2
+#define IEEE802_11_CARRIED_FC_LEN 2
+#define IEEE802_11_HT_CONTROL_LEN 4
+#define IEEE802_11_IV_LEN 3
+#define IEEE802_11_KID_LEN 1
+
+/* Frame check sequence length. */
+#define IEEE802_11_FCS_LEN 4
+
+/* Lengths of beacon components. */
+#define IEEE802_11_TSTAMP_LEN 8
+#define IEEE802_11_BCNINT_LEN 2
+#define IEEE802_11_CAPINFO_LEN 2
+#define IEEE802_11_LISTENINT_LEN 2
+
+#define IEEE802_11_AID_LEN 2
+#define IEEE802_11_STATUS_LEN 2
+#define IEEE802_11_REASON_LEN 2
+
+/* Length of previous AP in reassocation frame */
+#define IEEE802_11_AP_LEN 6
+
+#define T_MGMT 0x0 /* management */
+#define T_CTRL 0x1 /* control */
+#define T_DATA 0x2 /* data */
+#define T_RESV 0x3 /* reserved */
+
+#define ST_ASSOC_REQUEST 0x0
+#define ST_ASSOC_RESPONSE 0x1
+#define ST_REASSOC_REQUEST 0x2
+#define ST_REASSOC_RESPONSE 0x3
+#define ST_PROBE_REQUEST 0x4
+#define ST_PROBE_RESPONSE 0x5
+/* RESERVED 0x6 */
+/* RESERVED 0x7 */
+#define ST_BEACON 0x8
+#define ST_ATIM 0x9
+#define ST_DISASSOC 0xA
+#define ST_AUTH 0xB
+#define ST_DEAUTH 0xC
+#define ST_ACTION 0xD
+/* RESERVED 0xE */
+/* RESERVED 0xF */
+
+static const struct tok st_str[] = {
+ { ST_ASSOC_REQUEST, "Assoc Request" },
+ { ST_ASSOC_RESPONSE, "Assoc Response" },
+ { ST_REASSOC_REQUEST, "ReAssoc Request" },
+ { ST_REASSOC_RESPONSE, "ReAssoc Response" },
+ { ST_PROBE_REQUEST, "Probe Request" },
+ { ST_PROBE_RESPONSE, "Probe Response" },
+ { ST_BEACON, "Beacon" },
+ { ST_ATIM, "ATIM" },
+ { ST_DISASSOC, "Disassociation" },
+ { ST_AUTH, "Authentication" },
+ { ST_DEAUTH, "DeAuthentication" },
+ { ST_ACTION, "Action" },
+ { 0, NULL }
+};
+
+#define CTRL_CONTROL_WRAPPER 0x7
+#define CTRL_BAR 0x8
+#define CTRL_BA 0x9
+#define CTRL_PS_POLL 0xA
+#define CTRL_RTS 0xB
+#define CTRL_CTS 0xC
+#define CTRL_ACK 0xD
+#define CTRL_CF_END 0xE
+#define CTRL_END_ACK 0xF
+
+static const struct tok ctrl_str[] = {
+ { CTRL_CONTROL_WRAPPER, "Control Wrapper" },
+ { CTRL_BAR, "BAR" },
+ { CTRL_BA, "BA" },
+ { CTRL_PS_POLL, "Power Save-Poll" },
+ { CTRL_RTS, "Request-To-Send" },
+ { CTRL_CTS, "Clear-To-Send" },
+ { CTRL_ACK, "Acknowledgment" },
+ { CTRL_CF_END, "CF-End" },
+ { CTRL_END_ACK, "CF-End+CF-Ack" },
+ { 0, NULL }
+};
+
+#define DATA_DATA 0x0
+#define DATA_DATA_CF_ACK 0x1
+#define DATA_DATA_CF_POLL 0x2
+#define DATA_DATA_CF_ACK_POLL 0x3
+#define DATA_NODATA 0x4
+#define DATA_NODATA_CF_ACK 0x5
+#define DATA_NODATA_CF_POLL 0x6
+#define DATA_NODATA_CF_ACK_POLL 0x7
+
+#define DATA_QOS_DATA 0x8
+#define DATA_QOS_DATA_CF_ACK 0x9
+#define DATA_QOS_DATA_CF_POLL 0xA
+#define DATA_QOS_DATA_CF_ACK_POLL 0xB
+#define DATA_QOS_NODATA 0xC
+#define DATA_QOS_CF_POLL_NODATA 0xE
+#define DATA_QOS_CF_ACK_POLL_NODATA 0xF
+
+/*
+ * The subtype field of a data frame is, in effect, composed of 4 flag
+ * bits - CF-Ack, CF-Poll, Null (means the frame doesn't actually have
+ * any data), and QoS.
+ */
+#define DATA_FRAME_IS_CF_ACK(x) ((x) & 0x01)
+#define DATA_FRAME_IS_CF_POLL(x) ((x) & 0x02)
+#define DATA_FRAME_IS_NULL(x) ((x) & 0x04)
+#define DATA_FRAME_IS_QOS(x) ((x) & 0x08)
+
+/*
+ * Bits in the frame control field.
+ */
+#define FC_VERSION(fc) ((fc) & 0x3)
+#define FC_TYPE(fc) (((fc) >> 2) & 0x3)
+#define FC_SUBTYPE(fc) (((fc) >> 4) & 0xF)
+#define FC_TO_DS(fc) ((fc) & 0x0100)
+#define FC_FROM_DS(fc) ((fc) & 0x0200)
+#define FC_MORE_FLAG(fc) ((fc) & 0x0400)
+#define FC_RETRY(fc) ((fc) & 0x0800)
+#define FC_POWER_MGMT(fc) ((fc) & 0x1000)
+#define FC_MORE_DATA(fc) ((fc) & 0x2000)
+#define FC_PROTECTED(fc) ((fc) & 0x4000)
+#define FC_ORDER(fc) ((fc) & 0x8000)
+
+struct mgmt_header_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr da;
+ nd_mac_addr sa;
+ nd_mac_addr bssid;
+ nd_uint16_t seq_ctrl;
+};
+
+#define MGMT_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
+ IEEE802_11_DA_LEN+IEEE802_11_SA_LEN+\
+ IEEE802_11_BSSID_LEN+IEEE802_11_SEQ_LEN)
+
+#define CAPABILITY_ESS(cap) ((cap) & 0x0001)
+#define CAPABILITY_IBSS(cap) ((cap) & 0x0002)
+#define CAPABILITY_CFP(cap) ((cap) & 0x0004)
+#define CAPABILITY_CFP_REQ(cap) ((cap) & 0x0008)
+#define CAPABILITY_PRIVACY(cap) ((cap) & 0x0010)
+
+struct ssid_t {
+ uint8_t element_id;
+ uint8_t length;
+ u_char ssid[33]; /* 32 + 1 for null */
+};
+
+struct rates_t {
+ uint8_t element_id;
+ uint8_t length;
+ uint8_t rate[16];
+};
+
+struct challenge_t {
+ uint8_t element_id;
+ uint8_t length;
+ uint8_t text[254]; /* 1-253 + 1 for null */
+};
+
+struct fh_t {
+ uint8_t element_id;
+ uint8_t length;
+ uint16_t dwell_time;
+ uint8_t hop_set;
+ uint8_t hop_pattern;
+ uint8_t hop_index;
+};
+
+struct ds_t {
+ uint8_t element_id;
+ uint8_t length;
+ uint8_t channel;
+};
+
+struct cf_t {
+ uint8_t element_id;
+ uint8_t length;
+ uint8_t count;
+ uint8_t period;
+ uint16_t max_duration;
+ uint16_t dur_remaining;
+};
+
+struct tim_t {
+ uint8_t element_id;
+ uint8_t length;
+ uint8_t count;
+ uint8_t period;
+ uint8_t bitmap_control;
+ uint8_t bitmap[251];
+};
+
+#define E_SSID 0
+#define E_RATES 1
+#define E_FH 2
+#define E_DS 3
+#define E_CF 4
+#define E_TIM 5
+#define E_IBSS 6
+/* reserved 7 */
+/* reserved 8 */
+/* reserved 9 */
+/* reserved 10 */
+/* reserved 11 */
+/* reserved 12 */
+/* reserved 13 */
+/* reserved 14 */
+/* reserved 15 */
+/* reserved 16 */
+
+#define E_CHALLENGE 16
+/* reserved 17 */
+/* reserved 18 */
+/* reserved 19 */
+/* reserved 16 */
+/* reserved 16 */
+
+
+struct mgmt_body_t {
+ uint8_t timestamp[IEEE802_11_TSTAMP_LEN];
+ uint16_t beacon_interval;
+ uint16_t listen_interval;
+ uint16_t status_code;
+ uint16_t aid;
+ u_char ap[IEEE802_11_AP_LEN];
+ uint16_t reason_code;
+ uint16_t auth_alg;
+ uint16_t auth_trans_seq_num;
+ int challenge_present;
+ struct challenge_t challenge;
+ uint16_t capability_info;
+ int ssid_present;
+ struct ssid_t ssid;
+ int rates_present;
+ struct rates_t rates;
+ int ds_present;
+ struct ds_t ds;
+ int cf_present;
+ struct cf_t cf;
+ int fh_present;
+ struct fh_t fh;
+ int tim_present;
+ struct tim_t tim;
+};
+
+struct ctrl_control_wrapper_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr addr1;
+ nd_uint16_t carried_fc[IEEE802_11_CARRIED_FC_LEN];
+ nd_uint16_t ht_control[IEEE802_11_HT_CONTROL_LEN];
+};
+
+#define CTRL_CONTROL_WRAPPER_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
+ IEEE802_11_ADDR1_LEN+\
+ IEEE802_11_CARRIED_FC_LEN+\
+ IEEE802_11_HT_CONTROL_LEN)
+
+struct ctrl_rts_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr ra;
+ nd_mac_addr ta;
+};
+
+#define CTRL_RTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
+ IEEE802_11_RA_LEN+IEEE802_11_TA_LEN)
+
+struct ctrl_cts_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr ra;
+};
+
+#define CTRL_CTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
+
+struct ctrl_ack_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr ra;
+};
+
+#define CTRL_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
+
+struct ctrl_ps_poll_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t aid;
+ nd_mac_addr bssid;
+ nd_mac_addr ta;
+};
+
+#define CTRL_PS_POLL_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_AID_LEN+\
+ IEEE802_11_BSSID_LEN+IEEE802_11_TA_LEN)
+
+struct ctrl_end_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr ra;
+ nd_mac_addr bssid;
+};
+
+#define CTRL_END_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
+ IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
+struct ctrl_end_ack_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr ra;
+ nd_mac_addr bssid;
+};
+
+#define CTRL_END_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
+ IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
+
+struct ctrl_ba_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t duration;
+ nd_mac_addr ra;
+};
+
+#define CTRL_BA_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
+
+struct ctrl_bar_hdr_t {
+ nd_uint16_t fc;
+ nd_uint16_t dur;
+ nd_mac_addr ra;
+ nd_mac_addr ta;
+ nd_uint16_t ctl;
+ nd_uint16_t seq;
+};
+
+#define CTRL_BAR_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
+ IEEE802_11_RA_LEN+IEEE802_11_TA_LEN+\
+ IEEE802_11_CTL_LEN+IEEE802_11_SEQ_LEN)
+
+struct meshcntl_t {
+ nd_uint8_t flags;
+ nd_uint8_t ttl;
+ nd_uint32_t seq;
+ nd_mac_addr addr4;
+ nd_mac_addr addr5;
+ nd_mac_addr addr6;
+};
+
+#define IV_IV(iv) ((iv) & 0xFFFFFF)
+#define IV_PAD(iv) (((iv) >> 24) & 0x3F)
+#define IV_KEYID(iv) (((iv) >> 30) & 0x03)
+
+#define PRINT_SSID(p) \
+ if (p.ssid_present) { \
+ ND_PRINT(" ("); \
+ fn_print_str(ndo, p.ssid.ssid); \
+ ND_PRINT(")"); \
+ }
+
+#define PRINT_RATE(_sep, _r, _suf) \
+ ND_PRINT("%s%2.1f%s", _sep, (.5 * ((_r) & 0x7f)), _suf)
#define PRINT_RATES(p) \
-do { \
- int z; \
- const char *sep = " ["; \
- for (z = 0; z < p.rates.length ; z++) { \
- printf("%s%2.1f", sep, (.5 * (p.rates.rate[z] & 0x7f))); \
- if (p.rates.rate[z] & 0x80) printf("*"); \
- sep = " "; \
- } \
- if (p.rates.length != 0) \
- printf(" Mbit]"); \
-} while (0)
+ if (p.rates_present) { \
+ int z; \
+ const char *sep = " ["; \
+ for (z = 0; z < p.rates.length ; z++) { \
+ PRINT_RATE(sep, p.rates.rate[z], \
+ (p.rates.rate[z] & 0x80 ? "*" : "")); \
+ sep = " "; \
+ } \
+ if (p.rates.length != 0) \
+ ND_PRINT(" Mbit]"); \
+ }
-static const char *auth_alg_text[]={"Open System","Shared Key","EAP"};
-static const char *subtype_text[]={
- "Assoc Request",
- "Assoc Response",
- "ReAssoc Request",
- "ReAssoc Response",
- "Probe Request",
- "Probe Response",
- "",
- "",
- "Beacon",
- "ATIM",
- "Disassociation",
- "Authentication",
- "DeAuthentication",
- "",
- ""
+#define PRINT_DS_CHANNEL(p) \
+ if (p.ds_present) \
+ ND_PRINT(" CH: %u", p.ds.channel); \
+ ND_PRINT("%s", \
+ CAPABILITY_PRIVACY(p.capability_info) ? ", PRIVACY" : "");
+
+#define MAX_MCS_INDEX 76
+
+/*
+ * Indices are:
+ *
+ * the MCS index (0-76);
+ *
+ * 0 for 20 MHz, 1 for 40 MHz;
+ *
+ * 0 for a long guard interval, 1 for a short guard interval.
+ */
+static const float ieee80211_float_htrates[MAX_MCS_INDEX+1][2][2] = {
+ /* MCS 0 */
+ { /* 20 Mhz */ { 6.5f, /* SGI */ 7.2f, },
+ /* 40 Mhz */ { 13.5f, /* SGI */ 15.0f, },
+ },
+
+ /* MCS 1 */
+ { /* 20 Mhz */ { 13.0f, /* SGI */ 14.4f, },
+ /* 40 Mhz */ { 27.0f, /* SGI */ 30.0f, },
+ },
+
+ /* MCS 2 */
+ { /* 20 Mhz */ { 19.5f, /* SGI */ 21.7f, },
+ /* 40 Mhz */ { 40.5f, /* SGI */ 45.0f, },
+ },
+
+ /* MCS 3 */
+ { /* 20 Mhz */ { 26.0f, /* SGI */ 28.9f, },
+ /* 40 Mhz */ { 54.0f, /* SGI */ 60.0f, },
+ },
+
+ /* MCS 4 */
+ { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, },
+ /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, },
+ },
+
+ /* MCS 5 */
+ { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, },
+ /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, },
+ },
+
+ /* MCS 6 */
+ { /* 20 Mhz */ { 58.5f, /* SGI */ 65.0f, },
+ /* 40 Mhz */ { 121.5f, /* SGI */ 135.0f, },
+ },
+
+ /* MCS 7 */
+ { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, },
+ /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, },
+ },
+
+ /* MCS 8 */
+ { /* 20 Mhz */ { 13.0f, /* SGI */ 14.4f, },
+ /* 40 Mhz */ { 27.0f, /* SGI */ 30.0f, },
+ },
+
+ /* MCS 9 */
+ { /* 20 Mhz */ { 26.0f, /* SGI */ 28.9f, },
+ /* 40 Mhz */ { 54.0f, /* SGI */ 60.0f, },
+ },
+
+ /* MCS 10 */
+ { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, },
+ /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, },
+ },
+
+ /* MCS 11 */
+ { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, },
+ /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, },
+ },
+
+ /* MCS 12 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 13 */
+ { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, },
+ /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, },
+ },
+
+ /* MCS 14 */
+ { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, },
+ /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, },
+ },
+
+ /* MCS 15 */
+ { /* 20 Mhz */ { 130.0f, /* SGI */ 144.4f, },
+ /* 40 Mhz */ { 270.0f, /* SGI */ 300.0f, },
+ },
+
+ /* MCS 16 */
+ { /* 20 Mhz */ { 19.5f, /* SGI */ 21.7f, },
+ /* 40 Mhz */ { 40.5f, /* SGI */ 45.0f, },
+ },
+
+ /* MCS 17 */
+ { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, },
+ /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, },
+ },
+
+ /* MCS 18 */
+ { /* 20 Mhz */ { 58.5f, /* SGI */ 65.0f, },
+ /* 40 Mhz */ { 121.5f, /* SGI */ 135.0f, },
+ },
+
+ /* MCS 19 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 20 */
+ { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, },
+ /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, },
+ },
+
+ /* MCS 21 */
+ { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, },
+ /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, },
+ },
+
+ /* MCS 22 */
+ { /* 20 Mhz */ { 175.5f, /* SGI */ 195.0f, },
+ /* 40 Mhz */ { 364.5f, /* SGI */ 405.0f, },
+ },
+
+ /* MCS 23 */
+ { /* 20 Mhz */ { 195.0f, /* SGI */ 216.7f, },
+ /* 40 Mhz */ { 405.0f, /* SGI */ 450.0f, },
+ },
+
+ /* MCS 24 */
+ { /* 20 Mhz */ { 26.0f, /* SGI */ 28.9f, },
+ /* 40 Mhz */ { 54.0f, /* SGI */ 60.0f, },
+ },
+
+ /* MCS 25 */
+ { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, },
+ /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, },
+ },
+
+ /* MCS 26 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 27 */
+ { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, },
+ /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, },
+ },
+
+ /* MCS 28 */
+ { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, },
+ /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, },
+ },
+
+ /* MCS 29 */
+ { /* 20 Mhz */ { 208.0f, /* SGI */ 231.1f, },
+ /* 40 Mhz */ { 432.0f, /* SGI */ 480.0f, },
+ },
+
+ /* MCS 30 */
+ { /* 20 Mhz */ { 234.0f, /* SGI */ 260.0f, },
+ /* 40 Mhz */ { 486.0f, /* SGI */ 540.0f, },
+ },
+
+ /* MCS 31 */
+ { /* 20 Mhz */ { 260.0f, /* SGI */ 288.9f, },
+ /* 40 Mhz */ { 540.0f, /* SGI */ 600.0f, },
+ },
+
+ /* MCS 32 */
+ { /* 20 Mhz */ { 0.0f, /* SGI */ 0.0f, }, /* not valid */
+ /* 40 Mhz */ { 6.0f, /* SGI */ 6.7f, },
+ },
+
+ /* MCS 33 */
+ { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, },
+ /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, },
+ },
+
+ /* MCS 34 */
+ { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, },
+ /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, },
+ },
+
+ /* MCS 35 */
+ { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, },
+ /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, },
+ },
+
+ /* MCS 36 */
+ { /* 20 Mhz */ { 58.5f, /* SGI */ 65.0f, },
+ /* 40 Mhz */ { 121.5f, /* SGI */ 135.0f, },
+ },
+
+ /* MCS 37 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 38 */
+ { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, },
+ /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, },
+ },
+
+ /* MCS 39 */
+ { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, },
+ /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, },
+ },
+
+ /* MCS 40 */
+ { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, },
+ /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, },
+ },
+
+ /* MCS 41 */
+ { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, },
+ /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, },
+ },
+
+ /* MCS 42 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 43 */
+ { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, },
+ /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, },
+ },
+
+ /* MCS 44 */
+ { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, },
+ /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, },
+ },
+
+ /* MCS 45 */
+ { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, },
+ /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, },
+ },
+
+ /* MCS 46 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 47 */
+ { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, },
+ /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, },
+ },
+
+ /* MCS 48 */
+ { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, },
+ /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, },
+ },
+
+ /* MCS 49 */
+ { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, },
+ /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, },
+ },
+
+ /* MCS 50 */
+ { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, },
+ /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, },
+ },
+
+ /* MCS 51 */
+ { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, },
+ /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, },
+ },
+
+ /* MCS 52 */
+ { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, },
+ /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, },
+ },
+
+ /* MCS 53 */
+ { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, },
+ /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, },
+ },
+
+ /* MCS 54 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 55 */
+ { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, },
+ /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, },
+ },
+
+ /* MCS 56 */
+ { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, },
+ /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, },
+ },
+
+ /* MCS 57 */
+ { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, },
+ /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, },
+ },
+
+ /* MCS 58 */
+ { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, },
+ /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, },
+ },
+
+ /* MCS 59 */
+ { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, },
+ /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, },
+ },
+
+ /* MCS 60 */
+ { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, },
+ /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, },
+ },
+
+ /* MCS 61 */
+ { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, },
+ /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, },
+ },
+
+ /* MCS 62 */
+ { /* 20 Mhz */ { 130.0f, /* SGI */ 144.4f, },
+ /* 40 Mhz */ { 270.0f, /* SGI */ 300.0f, },
+ },
+
+ /* MCS 63 */
+ { /* 20 Mhz */ { 130.0f, /* SGI */ 144.4f, },
+ /* 40 Mhz */ { 270.0f, /* SGI */ 300.0f, },
+ },
+
+ /* MCS 64 */
+ { /* 20 Mhz */ { 143.0f, /* SGI */ 158.9f, },
+ /* 40 Mhz */ { 297.0f, /* SGI */ 330.0f, },
+ },
+
+ /* MCS 65 */
+ { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, },
+ /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, },
+ },
+
+ /* MCS 66 */
+ { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, },
+ /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, },
+ },
+
+ /* MCS 67 */
+ { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, },
+ /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, },
+ },
+
+ /* MCS 68 */
+ { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, },
+ /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, },
+ },
+
+ /* MCS 69 */
+ { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, },
+ /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, },
+ },
+
+ /* MCS 70 */
+ { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, },
+ /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, },
+ },
+
+ /* MCS 71 */
+ { /* 20 Mhz */ { 175.5f, /* SGI */ 195.0f, },
+ /* 40 Mhz */ { 364.5f, /* SGI */ 405.0f, },
+ },
+
+ /* MCS 72 */
+ { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, },
+ /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, },
+ },
+
+ /* MCS 73 */
+ { /* 20 Mhz */ { 175.5f, /* SGI */ 195.0f, },
+ /* 40 Mhz */ { 364.5f, /* SGI */ 405.0f, },
+ },
+
+ /* MCS 74 */
+ { /* 20 Mhz */ { 195.0f, /* SGI */ 216.7f, },
+ /* 40 Mhz */ { 405.0f, /* SGI */ 450.0f, },
+ },
+
+ /* MCS 75 */
+ { /* 20 Mhz */ { 195.0f, /* SGI */ 216.7f, },
+ /* 40 Mhz */ { 405.0f, /* SGI */ 450.0f, },
+ },
+
+ /* MCS 76 */
+ { /* 20 Mhz */ { 214.5f, /* SGI */ 238.3f, },
+ /* 40 Mhz */ { 445.5f, /* SGI */ 495.0f, },
+ },
};
+static const char *auth_alg_text[]={"Open System","Shared Key","EAP"};
+#define NUM_AUTH_ALGS (sizeof(auth_alg_text) / sizeof(auth_alg_text[0]))
+
static const char *status_text[] = {
- "Succesful", /* 0 */
- "Unspecified failure", /* 1 */
- "Reserved", /* 2 */
- "Reserved", /* 3 */
- "Reserved", /* 4 */
- "Reserved", /* 5 */
- "Reserved", /* 6 */
- "Reserved", /* 7 */
- "Reserved", /* 8 */
- "Reserved", /* 9 */
- "Cannot Support all requested capabilities in the Capability Information field", /* 10 */
- "Reassociation denied due to inability to confirm that association exists", /* 11 */
- "Association denied due to reason outside the scope of the standard", /* 12 */
- "Responding station does not support the specified authentication algorithm ", /* 13 */
- "Received an Authentication frame with authentication transaction " \
- "sequence number out of expected sequence", /* 14 */
- "Authentication rejected because of challenge failure", /* 15 */
- "Authentication rejected due to timeout waiting for next frame in sequence", /* 16 */
- "Association denied because AP is unable to handle additional associated stations", /* 17 */
- "Association denied due to requesting station not supporting all of the " \
- "data rates in BSSBasicRateSet parameter", /* 18 */
- NULL
+ "Successful", /* 0 */
+ "Unspecified failure", /* 1 */
+ "Reserved", /* 2 */
+ "Reserved", /* 3 */
+ "Reserved", /* 4 */
+ "Reserved", /* 5 */
+ "Reserved", /* 6 */
+ "Reserved", /* 7 */
+ "Reserved", /* 8 */
+ "Reserved", /* 9 */
+ "Cannot Support all requested capabilities in the Capability "
+ "Information field", /* 10 */
+ "Reassociation denied due to inability to confirm that association "
+ "exists", /* 11 */
+ "Association denied due to reason outside the scope of the "
+ "standard", /* 12 */
+ "Responding station does not support the specified authentication "
+ "algorithm ", /* 13 */
+ "Received an Authentication frame with authentication transaction "
+ "sequence number out of expected sequence", /* 14 */
+ "Authentication rejected because of challenge failure", /* 15 */
+ "Authentication rejected due to timeout waiting for next frame in "
+ "sequence", /* 16 */
+ "Association denied because AP is unable to handle additional"
+ "associated stations", /* 17 */
+ "Association denied due to requesting station not supporting all of "
+ "the data rates in BSSBasicRateSet parameter", /* 18 */
+ "Association denied due to requesting station not supporting "
+ "short preamble operation", /* 19 */
+ "Association denied due to requesting station not supporting "
+ "PBCC encoding", /* 20 */
+ "Association denied due to requesting station not supporting "
+ "channel agility", /* 21 */
+ "Association request rejected because Spectrum Management "
+ "capability is required", /* 22 */
+ "Association request rejected because the information in the "
+ "Power Capability element is unacceptable", /* 23 */
+ "Association request rejected because the information in the "
+ "Supported Channels element is unacceptable", /* 24 */
+ "Association denied due to requesting station not supporting "
+ "short slot operation", /* 25 */
+ "Association denied due to requesting station not supporting "
+ "DSSS-OFDM operation", /* 26 */
+ "Association denied because the requested STA does not support HT "
+ "features", /* 27 */
+ "Reserved", /* 28 */
+ "Association denied because the requested STA does not support "
+ "the PCO transition time required by the AP", /* 29 */
+ "Reserved", /* 30 */
+ "Reserved", /* 31 */
+ "Unspecified, QoS-related failure", /* 32 */
+ "Association denied due to QAP having insufficient bandwidth "
+ "to handle another QSTA", /* 33 */
+ "Association denied due to excessive frame loss rates and/or "
+ "poor conditions on current operating channel", /* 34 */
+ "Association (with QBSS) denied due to requesting station not "
+ "supporting the QoS facility", /* 35 */
+ "Association denied due to requesting station not supporting "
+ "Block Ack", /* 36 */
+ "The request has been declined", /* 37 */
+ "The request has not been successful as one or more parameters "
+ "have invalid values", /* 38 */
+ "The TS has not been created because the request cannot be honored. "
+ "Try again with the suggested changes to the TSPEC", /* 39 */
+ "Invalid Information Element", /* 40 */
+ "Group Cipher is not valid", /* 41 */
+ "Pairwise Cipher is not valid", /* 42 */
+ "AKMP is not valid", /* 43 */
+ "Unsupported RSN IE version", /* 44 */
+ "Invalid RSN IE Capabilities", /* 45 */
+ "Cipher suite is rejected per security policy", /* 46 */
+ "The TS has not been created. However, the HC may be capable of "
+ "creating a TS, in response to a request, after the time indicated "
+ "in the TS Delay element", /* 47 */
+ "Direct Link is not allowed in the BSS by policy", /* 48 */
+ "Destination STA is not present within this QBSS.", /* 49 */
+ "The Destination STA is not a QSTA.", /* 50 */
+
};
+#define NUM_STATUSES (sizeof(status_text) / sizeof(status_text[0]))
static const char *reason_text[] = {
- "Reserved", /* 0 */
- "Unspecified reason", /* 1 */
- "Previous authentication no longer valid", /* 2 */
- "Deauthenticated because sending station is leaving (or has left) IBSS or ESS", /* 3 */
- "Disassociated due to inactivity", /* 4 */
- "Disassociated because AP is unable to handle all currently associated stations", /* 5 */
- "Class 2 frame receivedfrom nonauthenticated station", /* 6 */
- "Class 3 frame received from nonassociated station", /* 7 */
- "Disassociated because sending station is leaving (or has left) BSS", /* 8 */
- "Station requesting (re)association is not authenticated with responding station", /* 9 */
- NULL
+ "Reserved", /* 0 */
+ "Unspecified reason", /* 1 */
+ "Previous authentication no longer valid", /* 2 */
+ "Deauthenticated because sending station is leaving (or has left) "
+ "IBSS or ESS", /* 3 */
+ "Disassociated due to inactivity", /* 4 */
+ "Disassociated because AP is unable to handle all currently "
+ " associated stations", /* 5 */
+ "Class 2 frame received from nonauthenticated station", /* 6 */
+ "Class 3 frame received from nonassociated station", /* 7 */
+ "Disassociated because sending station is leaving "
+ "(or has left) BSS", /* 8 */
+ "Station requesting (re)association is not authenticated with "
+ "responding station", /* 9 */
+ "Disassociated because the information in the Power Capability "
+ "element is unacceptable", /* 10 */
+ "Disassociated because the information in the SupportedChannels "
+ "element is unacceptable", /* 11 */
+ "Invalid Information Element", /* 12 */
+ "Reserved", /* 13 */
+ "Michael MIC failure", /* 14 */
+ "4-Way Handshake timeout", /* 15 */
+ "Group key update timeout", /* 16 */
+ "Information element in 4-Way Handshake different from (Re)Association"
+ "Request/Probe Response/Beacon", /* 17 */
+ "Group Cipher is not valid", /* 18 */
+ "AKMP is not valid", /* 20 */
+ "Unsupported RSN IE version", /* 21 */
+ "Invalid RSN IE Capabilities", /* 22 */
+ "IEEE 802.1X Authentication failed", /* 23 */
+ "Cipher suite is rejected per security policy", /* 24 */
+ "Reserved", /* 25 */
+ "Reserved", /* 26 */
+ "Reserved", /* 27 */
+ "Reserved", /* 28 */
+ "Reserved", /* 29 */
+ "Reserved", /* 30 */
+ "TS deleted because QoS AP lacks sufficient bandwidth for this "
+ "QoS STA due to a change in BSS service characteristics or "
+ "operational mode (e.g. an HT BSS change from 40 MHz channel "
+ "to 20 MHz channel)", /* 31 */
+ "Disassociated for unspecified, QoS-related reason", /* 32 */
+ "Disassociated because QoS AP lacks sufficient bandwidth for this "
+ "QoS STA", /* 33 */
+ "Disassociated because of excessive number of frames that need to be "
+ "acknowledged, but are not acknowledged for AP transmissions "
+ "and/or poor channel conditions", /* 34 */
+ "Disassociated because STA is transmitting outside the limits "
+ "of its TXOPs", /* 35 */
+ "Requested from peer STA as the STA is leaving the BSS "
+ "(or resetting)", /* 36 */
+ "Requested from peer STA as it does not want to use the "
+ "mechanism", /* 37 */
+ "Requested from peer STA as the STA received frames using the "
+ "mechanism for which a set up is required", /* 38 */
+ "Requested from peer STA due to time out", /* 39 */
+ "Reserved", /* 40 */
+ "Reserved", /* 41 */
+ "Reserved", /* 42 */
+ "Reserved", /* 43 */
+ "Reserved", /* 44 */
+ "Peer STA does not support the requested cipher suite", /* 45 */
+ "Association denied due to requesting STA not supporting HT "
+ "features", /* 46 */
};
+#define NUM_REASONS (sizeof(reason_text) / sizeof(reason_text[0]))
static int
-wep_print(const u_char *p)
+wep_print(netdissect_options *ndo,
+ const u_char *p)
{
- u_int32_t iv;
+ uint32_t iv;
- if (!TTEST2(*p, IEEE802_11_IV_LEN + IEEE802_11_KID_LEN))
- return 0;
- iv = EXTRACT_LE_32BITS(p);
+ ND_TCHECK_LEN(p, IEEE802_11_IV_LEN + IEEE802_11_KID_LEN);
+ iv = GET_LE_U_4(p);
- printf("Data IV:%3x Pad %x KeyID %x", IV_IV(iv), IV_PAD(iv),
+ ND_PRINT(" IV:%3x Pad %x KeyID %x", IV_IV(iv), IV_PAD(iv),
IV_KEYID(iv));
return 1;
+trunc:
+ return 0;
}
static int
-parse_elements(struct mgmt_body_t *pbody, const u_char *p, int offset)
+parse_elements(netdissect_options *ndo,
+ struct mgmt_body_t *pbody, const u_char *p, int offset,
+ u_int length)
{
- for (;;) {
- if (!TTEST2(*(p + offset), 1))
- return 1;
- switch (*(p + offset)) {
+ u_int elementlen;
+ struct ssid_t ssid;
+ struct challenge_t challenge;
+ struct rates_t rates;
+ struct ds_t ds;
+ struct cf_t cf;
+ struct tim_t tim;
+
+ /*
+ * We haven't seen any elements yet.
+ */
+ pbody->challenge_present = 0;
+ pbody->ssid_present = 0;
+ pbody->rates_present = 0;
+ pbody->ds_present = 0;
+ pbody->cf_present = 0;
+ pbody->tim_present = 0;
+
+ while (length != 0) {
+ /* Make sure we at least have the element ID and length. */
+ ND_TCHECK_2(p + offset);
+ if (length < 2)
+ goto trunc;
+ elementlen = GET_U_1(p + offset + 1);
+
+ /* Make sure we have the entire element. */
+ ND_TCHECK_LEN(p + offset + 2, elementlen);
+ if (length < elementlen + 2)
+ goto trunc;
+
+ switch (GET_U_1(p + offset)) {
case E_SSID:
- if (!TTEST2(*(p + offset), 2))
- return 0;
- memcpy(&pbody->ssid, p + offset, 2);
+ memcpy(&ssid, p + offset, 2);
offset += 2;
- if (pbody->ssid.length <= 0)
- break;
- if (!TTEST2(*(p + offset), pbody->ssid.length))
- return 0;
- memcpy(&pbody->ssid.ssid, p + offset,
- pbody->ssid.length);
- offset += pbody->ssid.length;
- pbody->ssid.ssid[pbody->ssid.length] = '\0';
+ length -= 2;
+ if (ssid.length != 0) {
+ if (ssid.length > sizeof(ssid.ssid) - 1)
+ return 0;
+ memcpy(&ssid.ssid, p + offset, ssid.length);
+ offset += ssid.length;
+ length -= ssid.length;
+ }
+ ssid.ssid[ssid.length] = '\0';
+ /*
+ * Present and not truncated.
+ *
+ * If we haven't already seen an SSID IE,
+ * copy this one, otherwise ignore this one,
+ * so we later report the first one we saw.
+ */
+ if (!pbody->ssid_present) {
+ pbody->ssid = ssid;
+ pbody->ssid_present = 1;
+ }
break;
case E_CHALLENGE:
- if (!TTEST2(*(p + offset), 2))
- return 0;
- memcpy(&pbody->challenge, p + offset, 2);
+ memcpy(&challenge, p + offset, 2);
offset += 2;
- if (pbody->challenge.length <= 0)
- break;
- if (!TTEST2(*(p + offset), pbody->challenge.length))
- return 0;
- memcpy(&pbody->challenge.text, p + offset,
- pbody->challenge.length);
- offset += pbody->challenge.length;
- pbody->challenge.text[pbody->challenge.length] = '\0';
+ length -= 2;
+ if (challenge.length != 0) {
+ if (challenge.length >
+ sizeof(challenge.text) - 1)
+ return 0;
+ memcpy(&challenge.text, p + offset,
+ challenge.length);
+ offset += challenge.length;
+ length -= challenge.length;
+ }
+ challenge.text[challenge.length] = '\0';
+ /*
+ * Present and not truncated.
+ *
+ * If we haven't already seen a challenge IE,
+ * copy this one, otherwise ignore this one,
+ * so we later report the first one we saw.
+ */
+ if (!pbody->challenge_present) {
+ pbody->challenge = challenge;
+ pbody->challenge_present = 1;
+ }
break;
case E_RATES:
- if (!TTEST2(*(p + offset), 2))
- return 0;
- memcpy(&(pbody->rates), p + offset, 2);
+ memcpy(&rates, p + offset, 2);
offset += 2;
- if (pbody->rates.length <= 0)
- break;
- if (!TTEST2(*(p + offset), pbody->rates.length))
- return 0;
- memcpy(&pbody->rates.rate, p + offset,
- pbody->rates.length);
- offset += pbody->rates.length;
+ length -= 2;
+ if (rates.length != 0) {
+ if (rates.length > sizeof(rates.rate))
+ return 0;
+ memcpy(&rates.rate, p + offset, rates.length);
+ offset += rates.length;
+ length -= rates.length;
+ }
+ /*
+ * Present and not truncated.
+ *
+ * If we haven't already seen a rates IE,
+ * copy this one if it's not zero-length,
+ * otherwise ignore this one, so we later
+ * report the first one we saw.
+ *
+ * We ignore zero-length rates IEs as some
+ * devices seem to put a zero-length rates
+ * IE, followed by an SSID IE, followed by
+ * a non-zero-length rates IE into frames,
+ * even though IEEE Std 802.11-2007 doesn't
+ * seem to indicate that a zero-length rates
+ * IE is valid.
+ */
+ if (!pbody->rates_present && rates.length != 0) {
+ pbody->rates = rates;
+ pbody->rates_present = 1;
+ }
break;
case E_DS:
- if (!TTEST2(*(p + offset), 3))
- return 0;
- memcpy(&pbody->ds, p + offset, 3);
- offset += 3;
+ memcpy(&ds, p + offset, 2);
+ offset += 2;
+ length -= 2;
+ if (ds.length != 1) {
+ offset += ds.length;
+ length -= ds.length;
+ break;
+ }
+ ds.channel = GET_U_1(p + offset);
+ offset += 1;
+ length -= 1;
+ /*
+ * Present and not truncated.
+ *
+ * If we haven't already seen a DS IE,
+ * copy this one, otherwise ignore this one,
+ * so we later report the first one we saw.
+ */
+ if (!pbody->ds_present) {
+ pbody->ds = ds;
+ pbody->ds_present = 1;
+ }
break;
case E_CF:
- if (!TTEST2(*(p + offset), 8))
- return 0;
- memcpy(&pbody->cf, p + offset, 8);
- offset += 8;
+ memcpy(&cf, p + offset, 2);
+ offset += 2;
+ length -= 2;
+ if (cf.length != 6) {
+ offset += cf.length;
+ length -= cf.length;
+ break;
+ }
+ memcpy(&cf.count, p + offset, 6);
+ offset += 6;
+ length -= 6;
+ /*
+ * Present and not truncated.
+ *
+ * If we haven't already seen a CF IE,
+ * copy this one, otherwise ignore this one,
+ * so we later report the first one we saw.
+ */
+ if (!pbody->cf_present) {
+ pbody->cf = cf;
+ pbody->cf_present = 1;
+ }
break;
case E_TIM:
- if (!TTEST2(*(p + offset), 2))
- return 0;
- memcpy(&pbody->tim, p + offset, 2);
+ memcpy(&tim, p + offset, 2);
offset += 2;
- if (!TTEST2(*(p + offset), 3))
+ length -= 2;
+ if (tim.length <= 3U) {
+ offset += tim.length;
+ length -= tim.length;
+ break;
+ }
+ if (tim.length - 3U > sizeof(tim.bitmap))
return 0;
- memcpy(&pbody->tim.count, p + offset, 3);
+ memcpy(&tim.count, p + offset, 3);
offset += 3;
+ length -= 3;
- if (pbody->tim.length <= 3)
- break;
- if (!TTEST2(*(p + offset), pbody->tim.length - 3))
- return 0;
- memcpy(pbody->tim.bitmap, p + (pbody->tim.length - 3),
- (pbody->tim.length - 3));
- offset += pbody->tim.length - 3;
+ memcpy(tim.bitmap, p + offset, tim.length - 3);
+ offset += tim.length - 3;
+ length -= tim.length - 3;
+ /*
+ * Present and not truncated.
+ *
+ * If we haven't already seen a TIM IE,
+ * copy this one, otherwise ignore this one,
+ * so we later report the first one we saw.
+ */
+ if (!pbody->tim_present) {
+ pbody->tim = tim;
+ pbody->tim_present = 1;
+ }
break;
default:
#if 0
- printf("(1) unhandled element_id (%d) ",
- *(p + offset) );
+ ND_PRINT("(1) unhandled element_id (%u) ",
+ GET_U_1(p + offset));
#endif
- offset += *(p + offset + 1) + 2;
+ offset += 2 + elementlen;
+ length -= 2 + elementlen;
break;
}
}
+
+ /* No problems found. */
return 1;
+trunc:
+ return 0;
}
/*********************************************************************************
*********************************************************************************/
static int
-handle_beacon(u_int16_t fc, const u_char *p)
+handle_beacon(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
int offset = 0;
+ int ret;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN +
- IEEE802_11_CAPINFO_LEN))
- return 0;
- memcpy(&pbody.timestamp, p, 8);
+ ND_TCHECK_LEN(p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN +
+ IEEE802_11_CAPINFO_LEN);
+ if (length < IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN +
+ IEEE802_11_CAPINFO_LEN)
+ goto trunc;
+ memcpy(&pbody.timestamp, p, IEEE802_11_TSTAMP_LEN);
offset += IEEE802_11_TSTAMP_LEN;
- pbody.beacon_interval = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_TSTAMP_LEN;
+ pbody.beacon_interval = GET_LE_U_2(p + offset);
offset += IEEE802_11_BCNINT_LEN;
- pbody.capability_info = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_BCNINT_LEN;
+ pbody.capability_info = GET_LE_U_2(p + offset);
offset += IEEE802_11_CAPINFO_LEN;
+ length -= IEEE802_11_CAPINFO_LEN;
- if (!parse_elements(&pbody, p, offset))
- return 0;
+ ret = parse_elements(ndo, &pbody, p, offset, length);
- printf(" (");
- fn_print(pbody.ssid.ssid, NULL);
- printf(")");
+ PRINT_SSID(pbody);
PRINT_RATES(pbody);
- printf(" %s CH: %u%s",
- CAPABILITY_ESS(pbody.capability_info) ? "ESS" : "IBSS",
- pbody.ds.channel,
- CAPABILITY_PRIVACY(pbody.capability_info) ? ", PRIVACY" : "" );
+ ND_PRINT(" %s",
+ CAPABILITY_ESS(pbody.capability_info) ? "ESS" : "IBSS");
+ PRINT_DS_CHANNEL(pbody);
- return 1;
+ return ret;
+trunc:
+ return 0;
}
static int
-handle_assoc_request(u_int16_t fc, const u_char *p)
+handle_assoc_request(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
int offset = 0;
+ int ret;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN))
- return 0;
- pbody.capability_info = EXTRACT_LE_16BITS(p);
+ ND_TCHECK_LEN(p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN);
+ if (length < IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN)
+ goto trunc;
+ pbody.capability_info = GET_LE_U_2(p);
offset += IEEE802_11_CAPINFO_LEN;
- pbody.listen_interval = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_CAPINFO_LEN;
+ pbody.listen_interval = GET_LE_U_2(p + offset);
offset += IEEE802_11_LISTENINT_LEN;
+ length -= IEEE802_11_LISTENINT_LEN;
- if (!parse_elements(&pbody, p, offset))
- return 0;
+ ret = parse_elements(ndo, &pbody, p, offset, length);
- printf(" (");
- fn_print(pbody.ssid.ssid, NULL);
- printf(")");
+ PRINT_SSID(pbody);
PRINT_RATES(pbody);
- return 1;
+ return ret;
+trunc:
+ return 0;
}
static int
-handle_assoc_response(u_int16_t fc, const u_char *p)
+handle_assoc_response(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
int offset = 0;
+ int ret;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, IEEE802_11_CAPINFO_LEN + IEEE802_11_STATUS_LEN +
- IEEE802_11_AID_LEN))
- return 0;
- pbody.capability_info = EXTRACT_LE_16BITS(p);
+ ND_TCHECK_LEN(p, IEEE802_11_CAPINFO_LEN + IEEE802_11_STATUS_LEN +
+ IEEE802_11_AID_LEN);
+ if (length < IEEE802_11_CAPINFO_LEN + IEEE802_11_STATUS_LEN +
+ IEEE802_11_AID_LEN)
+ goto trunc;
+ pbody.capability_info = GET_LE_U_2(p);
offset += IEEE802_11_CAPINFO_LEN;
- pbody.status_code = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_CAPINFO_LEN;
+ pbody.status_code = GET_LE_U_2(p + offset);
offset += IEEE802_11_STATUS_LEN;
- pbody.aid = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_STATUS_LEN;
+ pbody.aid = GET_LE_U_2(p + offset);
offset += IEEE802_11_AID_LEN;
+ length -= IEEE802_11_AID_LEN;
- if (!parse_elements(&pbody, p, offset))
- return 0;
+ ret = parse_elements(ndo, &pbody, p, offset, length);
- printf(" AID(%x) :%s: %s", ((u_int16_t)(pbody.aid << 2 )) >> 2 ,
+ ND_PRINT(" AID(%x) :%s: %s", ((uint16_t)(pbody.aid << 2 )) >> 2 ,
CAPABILITY_PRIVACY(pbody.capability_info) ? " PRIVACY " : "",
- (pbody.status_code < 19 ? status_text[pbody.status_code] : "n/a"));
+ (pbody.status_code < NUM_STATUSES
+ ? status_text[pbody.status_code]
+ : "n/a"));
- return 1;
+ return ret;
+trunc:
+ return 0;
}
static int
-handle_reassoc_request(u_int16_t fc, const u_char *p)
+handle_reassoc_request(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
int offset = 0;
+ int ret;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN +
- IEEE802_11_AP_LEN))
- return 0;
- pbody.capability_info = EXTRACT_LE_16BITS(p);
+ ND_TCHECK_LEN(p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN +
+ IEEE802_11_AP_LEN);
+ if (length < IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN +
+ IEEE802_11_AP_LEN)
+ goto trunc;
+ pbody.capability_info = GET_LE_U_2(p);
offset += IEEE802_11_CAPINFO_LEN;
- pbody.listen_interval = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_CAPINFO_LEN;
+ pbody.listen_interval = GET_LE_U_2(p + offset);
offset += IEEE802_11_LISTENINT_LEN;
+ length -= IEEE802_11_LISTENINT_LEN;
memcpy(&pbody.ap, p+offset, IEEE802_11_AP_LEN);
offset += IEEE802_11_AP_LEN;
+ length -= IEEE802_11_AP_LEN;
- if (!parse_elements(&pbody, p, offset))
- return 0;
+ ret = parse_elements(ndo, &pbody, p, offset, length);
- printf(" (");
- fn_print(pbody.ssid.ssid, NULL);
- printf(") AP : %s", etheraddr_string( pbody.ap ));
+ PRINT_SSID(pbody);
+ ND_PRINT(" AP : %s", etheraddr_string(ndo, pbody.ap ));
- return 1;
+ return ret;
+trunc:
+ return 0;
}
static int
-handle_reassoc_response(u_int16_t fc, const u_char *p)
+handle_reassoc_response(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
- /* Same as a Association Reponse */
- return handle_assoc_response(fc, p);
+ /* Same as a Association Response */
+ return handle_assoc_response(ndo, p, length);
}
static int
-handle_probe_request(u_int16_t fc, const u_char *p)
+handle_probe_request(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
int offset = 0;
+ int ret;
memset(&pbody, 0, sizeof(pbody));
- if (!parse_elements(&pbody, p, offset))
- return 0;
+ ret = parse_elements(ndo, &pbody, p, offset, length);
- printf(" (");
- fn_print(pbody.ssid.ssid, NULL);
- printf(")");
+ PRINT_SSID(pbody);
PRINT_RATES(pbody);
- return 1;
+ return ret;
}
static int
-handle_probe_response(u_int16_t fc, const u_char *p)
+handle_probe_response(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
int offset = 0;
+ int ret;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN +
- IEEE802_11_CAPINFO_LEN))
- return 0;
-
+ ND_TCHECK_LEN(p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN +
+ IEEE802_11_CAPINFO_LEN);
+ if (length < IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN +
+ IEEE802_11_CAPINFO_LEN)
+ goto trunc;
memcpy(&pbody.timestamp, p, IEEE802_11_TSTAMP_LEN);
offset += IEEE802_11_TSTAMP_LEN;
- pbody.beacon_interval = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_TSTAMP_LEN;
+ pbody.beacon_interval = GET_LE_U_2(p + offset);
offset += IEEE802_11_BCNINT_LEN;
- pbody.capability_info = EXTRACT_LE_16BITS(p+offset);
+ length -= IEEE802_11_BCNINT_LEN;
+ pbody.capability_info = GET_LE_U_2(p + offset);
offset += IEEE802_11_CAPINFO_LEN;
+ length -= IEEE802_11_CAPINFO_LEN;
- if (!parse_elements(&pbody, p, offset))
- return 0;
+ ret = parse_elements(ndo, &pbody, p, offset, length);
- printf(" (");
- fn_print(pbody.ssid.ssid, NULL);
- printf(") ");
+ PRINT_SSID(pbody);
PRINT_RATES(pbody);
- printf(" CH: %u%s", pbody.ds.channel,
- CAPABILITY_PRIVACY(pbody.capability_info) ? ", PRIVACY" : "" );
+ PRINT_DS_CHANNEL(pbody);
- return 1;
+ return ret;
+trunc:
+ return 0;
}
static int
}
static int
-handle_disassoc(u_int16_t fc, const u_char *p)
+handle_disassoc(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, IEEE802_11_REASON_LEN))
- return 0;
- pbody.reason_code = EXTRACT_LE_16BITS(p);
+ ND_TCHECK_LEN(p, IEEE802_11_REASON_LEN);
+ if (length < IEEE802_11_REASON_LEN)
+ goto trunc;
+ pbody.reason_code = GET_LE_U_2(p);
- printf(": %s",
- (pbody.reason_code < 10) ? reason_text[pbody.reason_code]
- : "Reserved" );
+ ND_PRINT(": %s",
+ (pbody.reason_code < NUM_REASONS)
+ ? reason_text[pbody.reason_code]
+ : "Reserved");
return 1;
+trunc:
+ return 0;
}
static int
-handle_auth(u_int16_t fc, const u_char *p)
+handle_auth(netdissect_options *ndo,
+ const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
int offset = 0;
+ int ret;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, 6))
- return 0;
- pbody.auth_alg = EXTRACT_LE_16BITS(p);
+ ND_TCHECK_6(p);
+ if (length < 6)
+ goto trunc;
+ pbody.auth_alg = GET_LE_U_2(p);
offset += 2;
- pbody.auth_trans_seq_num = EXTRACT_LE_16BITS(p + offset);
+ length -= 2;
+ pbody.auth_trans_seq_num = GET_LE_U_2(p + offset);
offset += 2;
- pbody.status_code = EXTRACT_LE_16BITS(p + offset);
+ length -= 2;
+ pbody.status_code = GET_LE_U_2(p + offset);
offset += 2;
+ length -= 2;
- if (!parse_elements(&pbody, p, offset))
- return 0;
+ ret = parse_elements(ndo, &pbody, p, offset, length);
if ((pbody.auth_alg == 1) &&
((pbody.auth_trans_seq_num == 2) ||
(pbody.auth_trans_seq_num == 3))) {
- printf(" (%s)-%x [Challenge Text] %s",
- (pbody.auth_alg < 4) ? auth_alg_text[pbody.auth_alg]
- : "Reserved",
+ ND_PRINT(" (%s)-%x [Challenge Text] %s",
+ (pbody.auth_alg < NUM_AUTH_ALGS)
+ ? auth_alg_text[pbody.auth_alg]
+ : "Reserved",
pbody.auth_trans_seq_num,
((pbody.auth_trans_seq_num % 2)
- ? ((pbody.status_code < 19)
+ ? ((pbody.status_code < NUM_STATUSES)
? status_text[pbody.status_code]
: "n/a") : ""));
- return 1;
+ return ret;
}
- printf(" (%s)-%x: %s",
- (pbody.auth_alg < 4) ? auth_alg_text[pbody.auth_alg] : "Reserved",
+ ND_PRINT(" (%s)-%x: %s",
+ (pbody.auth_alg < NUM_AUTH_ALGS)
+ ? auth_alg_text[pbody.auth_alg]
+ : "Reserved",
pbody.auth_trans_seq_num,
(pbody.auth_trans_seq_num % 2)
- ? ((pbody.status_code < 19) ? status_text[pbody.status_code]
- : "n/a")
- : "");
-
- return 1;
+ ? ((pbody.status_code < NUM_STATUSES)
+ ? status_text[pbody.status_code]
+ : "n/a")
+ : "");
+
+ return ret;
+trunc:
+ return 0;
}
static int
-handle_deauth(u_int16_t fc, const struct mgmt_header_t *pmh,
- const u_char *p)
+handle_deauth(netdissect_options *ndo,
+ const uint8_t *src, const u_char *p, u_int length)
{
struct mgmt_body_t pbody;
- int offset = 0;
const char *reason = NULL;
memset(&pbody, 0, sizeof(pbody));
- if (!TTEST2(*p, IEEE802_11_REASON_LEN))
- return 0;
- pbody.reason_code = EXTRACT_LE_16BITS(p);
- offset += IEEE802_11_REASON_LEN;
+ ND_TCHECK_LEN(p, IEEE802_11_REASON_LEN);
+ if (length < IEEE802_11_REASON_LEN)
+ goto trunc;
+ pbody.reason_code = GET_LE_U_2(p);
+
+ reason = (pbody.reason_code < NUM_REASONS)
+ ? reason_text[pbody.reason_code]
+ : "Reserved";
+
+ if (ndo->ndo_eflag) {
+ ND_PRINT(": %s", reason);
+ } else {
+ ND_PRINT(" (%s): %s", etheraddr_string(ndo, src), reason);
+ }
+ return 1;
+trunc:
+ return 0;
+}
- reason = (pbody.reason_code < 10) ? reason_text[pbody.reason_code]
- : "Reserved";
+#define PRINT_HT_ACTION(v) (\
+ (v) == 0 ? ND_PRINT("TxChWidth"): \
+ (v) == 1 ? ND_PRINT("MIMOPwrSave"): \
+ ND_PRINT("Act#%u", (v)))
+#define PRINT_BA_ACTION(v) (\
+ (v) == 0 ? ND_PRINT("ADDBA Request"): \
+ (v) == 1 ? ND_PRINT("ADDBA Response"): \
+ (v) == 2 ? ND_PRINT("DELBA"): \
+ ND_PRINT("Act#%u", (v)))
+#define PRINT_MESHLINK_ACTION(v) (\
+ (v) == 0 ? ND_PRINT("Request"): \
+ (v) == 1 ? ND_PRINT("Report"): \
+ ND_PRINT("Act#%u", (v)))
+#define PRINT_MESHPEERING_ACTION(v) (\
+ (v) == 0 ? ND_PRINT("Open"): \
+ (v) == 1 ? ND_PRINT("Confirm"): \
+ (v) == 2 ? ND_PRINT("Close"): \
+ ND_PRINT("Act#%u", (v)))
+#define PRINT_MESHPATH_ACTION(v) (\
+ (v) == 0 ? ND_PRINT("Request"): \
+ (v) == 1 ? ND_PRINT("Report"): \
+ (v) == 2 ? ND_PRINT("Error"): \
+ (v) == 3 ? ND_PRINT("RootAnnouncement"): \
+ ND_PRINT("Act#%u", (v)))
+
+#define PRINT_MESH_ACTION(v) (\
+ (v) == 0 ? ND_PRINT("MeshLink"): \
+ (v) == 1 ? ND_PRINT("HWMP"): \
+ (v) == 2 ? ND_PRINT("Gate Announcement"): \
+ (v) == 3 ? ND_PRINT("Congestion Control"): \
+ (v) == 4 ? ND_PRINT("MCCA Setup Request"): \
+ (v) == 5 ? ND_PRINT("MCCA Setup Reply"): \
+ (v) == 6 ? ND_PRINT("MCCA Advertisement Request"): \
+ (v) == 7 ? ND_PRINT("MCCA Advertisement"): \
+ (v) == 8 ? ND_PRINT("MCCA Teardown"): \
+ (v) == 9 ? ND_PRINT("TBTT Adjustment Request"): \
+ (v) == 10 ? ND_PRINT("TBTT Adjustment Response"): \
+ ND_PRINT("Act#%u", (v)))
+#define PRINT_MULTIHOP_ACTION(v) (\
+ (v) == 0 ? ND_PRINT("Proxy Update"): \
+ (v) == 1 ? ND_PRINT("Proxy Update Confirmation"): \
+ ND_PRINT("Act#%u", (v)))
+#define PRINT_SELFPROT_ACTION(v) (\
+ (v) == 1 ? ND_PRINT("Peering Open"): \
+ (v) == 2 ? ND_PRINT("Peering Confirm"): \
+ (v) == 3 ? ND_PRINT("Peering Close"): \
+ (v) == 4 ? ND_PRINT("Group Key Inform"): \
+ (v) == 5 ? ND_PRINT("Group Key Acknowledge"): \
+ ND_PRINT("Act#%u", (v)))
- if (eflag) {
- printf(": %s", reason);
+static int
+handle_action(netdissect_options *ndo,
+ const uint8_t *src, const u_char *p, u_int length)
+{
+ ND_TCHECK_2(p);
+ if (length < 2)
+ goto trunc;
+ if (ndo->ndo_eflag) {
+ ND_PRINT(": ");
} else {
- printf(" (%s): %s", etheraddr_string(pmh->sa), reason);
+ ND_PRINT(" (%s): ", etheraddr_string(ndo, src));
+ }
+ switch (GET_U_1(p)) {
+ case 0: ND_PRINT("Spectrum Management Act#%u", GET_U_1(p + 1)); break;
+ case 1: ND_PRINT("QoS Act#%u", GET_U_1(p + 1)); break;
+ case 2: ND_PRINT("DLS Act#%u", GET_U_1(p + 1)); break;
+ case 3: ND_PRINT("BA "); PRINT_BA_ACTION(GET_U_1(p + 1)); break;
+ case 7: ND_PRINT("HT "); PRINT_HT_ACTION(GET_U_1(p + 1)); break;
+ case 13: ND_PRINT("MeshAction "); PRINT_MESH_ACTION(GET_U_1(p + 1)); break;
+ case 14:
+ ND_PRINT("MultiohopAction ");
+ PRINT_MULTIHOP_ACTION(GET_U_1(p + 1)); break;
+ case 15:
+ ND_PRINT("SelfprotectAction ");
+ PRINT_SELFPROT_ACTION(GET_U_1(p + 1)); break;
+ case 127: ND_PRINT("Vendor Act#%u", GET_U_1(p + 1)); break;
+ default:
+ ND_PRINT("Reserved(%u) Act#%u", GET_U_1(p), GET_U_1(p + 1));
+ break;
}
return 1;
+trunc:
+ return 0;
}
static int
-mgmt_body_print(u_int16_t fc, const struct mgmt_header_t *pmh,
- const u_char *p)
+mgmt_body_print(netdissect_options *ndo,
+ uint16_t fc, const uint8_t *src, const u_char *p, u_int length)
{
- printf("%s", subtype_text[FC_SUBTYPE(fc)]);
+ ND_PRINT("%s", tok2str(st_str, "Unhandled Management subtype(%x)", FC_SUBTYPE(fc)));
+ /* There may be a problem w/ AP not having this bit set */
+ if (FC_PROTECTED(fc))
+ return wep_print(ndo, p);
switch (FC_SUBTYPE(fc)) {
case ST_ASSOC_REQUEST:
- return handle_assoc_request(fc, p);
+ return handle_assoc_request(ndo, p, length);
case ST_ASSOC_RESPONSE:
- return handle_assoc_response(fc, p);
+ return handle_assoc_response(ndo, p, length);
case ST_REASSOC_REQUEST:
- return handle_reassoc_request(fc, p);
+ return handle_reassoc_request(ndo, p, length);
case ST_REASSOC_RESPONSE:
- return handle_reassoc_response(fc, p);
+ return handle_reassoc_response(ndo, p, length);
case ST_PROBE_REQUEST:
- return handle_probe_request(fc, p);
+ return handle_probe_request(ndo, p, length);
case ST_PROBE_RESPONSE:
- return handle_probe_response(fc, p);
+ return handle_probe_response(ndo, p, length);
case ST_BEACON:
- return handle_beacon(fc, p);
+ return handle_beacon(ndo, p, length);
case ST_ATIM:
return handle_atim();
case ST_DISASSOC:
- return handle_disassoc(fc, p);
+ return handle_disassoc(ndo, p, length);
case ST_AUTH:
- if (!TTEST2(*p, 3))
- return 0;
- if ((p[0] == 0 ) && (p[1] == 0) && (p[2] == 0)) {
- printf("Authentication (Shared-Key)-3 ");
- return wep_print(p);
- }
- return handle_auth(fc, p);
+ return handle_auth(ndo, p, length);
case ST_DEAUTH:
- return handle_deauth(fc, pmh, p);
- break;
+ return handle_deauth(ndo, src, p, length);
+ case ST_ACTION:
+ return handle_action(ndo, src, p, length);
default:
- printf("Unhandled Management subtype(%x)",
- FC_SUBTYPE(fc));
return 1;
}
}
*********************************************************************************/
static int
-ctrl_body_print(u_int16_t fc, const u_char *p)
+ctrl_body_print(netdissect_options *ndo,
+ uint16_t fc, const u_char *p)
{
+ ND_PRINT("%s", tok2str(ctrl_str, "Unknown Ctrl Subtype", FC_SUBTYPE(fc)));
switch (FC_SUBTYPE(fc)) {
+ case CTRL_CONTROL_WRAPPER:
+ /* XXX - requires special handling */
+ break;
+ case CTRL_BAR:
+ ND_TCHECK_LEN(p, CTRL_BAR_HDRLEN);
+ if (!ndo->ndo_eflag)
+ ND_PRINT(" RA:%s TA:%s CTL(%x) SEQ(%u) ",
+ etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ra),
+ etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ta),
+ GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->ctl),
+ GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->seq));
+ break;
+ case CTRL_BA:
+ ND_TCHECK_LEN(p, CTRL_BA_HDRLEN);
+ if (!ndo->ndo_eflag)
+ ND_PRINT(" RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_ba_hdr_t *)p)->ra));
+ break;
case CTRL_PS_POLL:
- printf("Power Save-Poll");
- if (!TTEST2(*p, CTRL_PS_POLL_HDRLEN))
- return 0;
- printf(" AID(%x)",
- EXTRACT_LE_16BITS(&(((const struct ctrl_ps_poll_t *)p)->aid)));
+ ND_TCHECK_LEN(p, CTRL_PS_POLL_HDRLEN);
+ ND_PRINT(" AID(%x)",
+ GET_LE_U_2(((const struct ctrl_ps_poll_hdr_t *)p)->aid));
break;
case CTRL_RTS:
- printf("Request-To-Send");
- if (!TTEST2(*p, CTRL_RTS_HDRLEN))
- return 0;
- if (!eflag)
- printf(" TA:%s ",
- etheraddr_string(((const struct ctrl_rts_t *)p)->ta));
+ ND_TCHECK_LEN(p, CTRL_RTS_HDRLEN);
+ if (!ndo->ndo_eflag)
+ ND_PRINT(" TA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ta));
break;
case CTRL_CTS:
- printf("Clear-To-Send");
- if (!TTEST2(*p, CTRL_CTS_HDRLEN))
- return 0;
- if (!eflag)
- printf(" RA:%s ",
- etheraddr_string(((const struct ctrl_cts_t *)p)->ra));
+ ND_TCHECK_LEN(p, CTRL_CTS_HDRLEN);
+ if (!ndo->ndo_eflag)
+ ND_PRINT(" RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_cts_hdr_t *)p)->ra));
break;
case CTRL_ACK:
- printf("Acknowledgment");
- if (!TTEST2(*p, CTRL_ACK_HDRLEN))
- return 0;
- if (!eflag)
- printf(" RA:%s ",
- etheraddr_string(((const struct ctrl_ack_t *)p)->ra));
+ ND_TCHECK_LEN(p, CTRL_ACK_HDRLEN);
+ if (!ndo->ndo_eflag)
+ ND_PRINT(" RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_ack_hdr_t *)p)->ra));
break;
case CTRL_CF_END:
- printf("CF-End");
- if (!TTEST2(*p, CTRL_END_HDRLEN))
- return 0;
- if (!eflag)
- printf(" RA:%s ",
- etheraddr_string(((const struct ctrl_end_t *)p)->ra));
+ ND_TCHECK_LEN(p, CTRL_END_HDRLEN);
+ if (!ndo->ndo_eflag)
+ ND_PRINT(" RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->ra));
break;
case CTRL_END_ACK:
- printf("CF-End+CF-Ack");
- if (!TTEST2(*p, CTRL_END_ACK_HDRLEN))
- return 0;
- if (!eflag)
- printf(" RA:%s ",
- etheraddr_string(((const struct ctrl_end_ack_t *)p)->ra));
+ ND_TCHECK_LEN(p, CTRL_END_ACK_HDRLEN);
+ if (!ndo->ndo_eflag)
+ ND_PRINT(" RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->ra));
break;
- default:
- printf("Unknown Ctrl Subtype");
}
return 1;
+trunc:
+ return 0;
}
-/*
- * Print Header funcs
- */
-
/*
* Data Frame - Address field contents
*
* 1 | 1 | RA | TA | DA | SA
*/
+/*
+ * Function to get source and destination MAC addresses for a data frame.
+ */
static void
-data_header_print(u_int16_t fc, const u_char *p, const u_int8_t **srcp,
- const u_int8_t **dstp)
+get_data_src_dst_mac(uint16_t fc, const u_char *p, const uint8_t **srcp,
+ const uint8_t **dstp)
{
- switch (FC_SUBTYPE(fc)) {
- case DATA_DATA:
- case DATA_NODATA:
- break;
- case DATA_DATA_CF_ACK:
- case DATA_NODATA_CF_ACK:
- printf("CF Ack ");
- break;
- case DATA_DATA_CF_POLL:
- case DATA_NODATA_CF_POLL:
- printf("CF Poll ");
- break;
- case DATA_DATA_CF_ACK_POLL:
- case DATA_NODATA_CF_ACK_POLL:
- printf("CF Ack/Poll ");
- break;
- }
-
#define ADDR1 (p + 4)
#define ADDR2 (p + 10)
#define ADDR3 (p + 16)
#define ADDR4 (p + 24)
- if (!FC_TO_DS(fc) && !FC_FROM_DS(fc)) {
- if (srcp != NULL)
+ if (!FC_TO_DS(fc)) {
+ if (!FC_FROM_DS(fc)) {
+ /* not To DS and not From DS */
*srcp = ADDR2;
- if (dstp != NULL)
*dstp = ADDR1;
- if (!eflag)
- return;
- printf("DA:%s SA:%s BSSID:%s ",
- etheraddr_string(ADDR1), etheraddr_string(ADDR2),
- etheraddr_string(ADDR3));
- } else if (!FC_TO_DS(fc) && FC_FROM_DS(fc)) {
- if (srcp != NULL)
+ } else {
+ /* not To DS and From DS */
*srcp = ADDR3;
- if (dstp != NULL)
*dstp = ADDR1;
- if (!eflag)
- return;
- printf("DA:%s BSSID:%s SA:%s ",
- etheraddr_string(ADDR1), etheraddr_string(ADDR2),
- etheraddr_string(ADDR3));
- } else if (FC_TO_DS(fc) && !FC_FROM_DS(fc)) {
- if (srcp != NULL)
+ }
+ } else {
+ if (!FC_FROM_DS(fc)) {
+ /* From DS and not To DS */
*srcp = ADDR2;
- if (dstp != NULL)
*dstp = ADDR3;
- if (!eflag)
- return;
- printf("BSSID:%s SA:%s DA:%s ",
- etheraddr_string(ADDR1), etheraddr_string(ADDR2),
- etheraddr_string(ADDR3));
- } else if (FC_TO_DS(fc) && FC_FROM_DS(fc)) {
- if (srcp != NULL)
+ } else {
+ /* To DS and From DS */
*srcp = ADDR4;
- if (dstp != NULL)
*dstp = ADDR3;
- if (!eflag)
- return;
- printf("RA:%s TA:%s DA:%s SA:%s ",
- etheraddr_string(ADDR1), etheraddr_string(ADDR2),
- etheraddr_string(ADDR3), etheraddr_string(ADDR4));
+ }
}
#undef ADDR1
}
static void
-mgmt_header_print(const u_char *p, const u_int8_t **srcp,
- const u_int8_t **dstp)
+get_mgmt_src_dst_mac(const u_char *p, const uint8_t **srcp, const uint8_t **dstp)
{
const struct mgmt_header_t *hp = (const struct mgmt_header_t *) p;
*srcp = hp->sa;
if (dstp != NULL)
*dstp = hp->da;
- if (!eflag)
- return;
+}
+
+/*
+ * Print Header funcs
+ */
+
+static void
+data_header_print(netdissect_options *ndo, uint16_t fc, const u_char *p)
+{
+ u_int subtype = FC_SUBTYPE(fc);
+
+ if (DATA_FRAME_IS_CF_ACK(subtype) || DATA_FRAME_IS_CF_POLL(subtype) ||
+ DATA_FRAME_IS_QOS(subtype)) {
+ ND_PRINT("CF ");
+ if (DATA_FRAME_IS_CF_ACK(subtype)) {
+ if (DATA_FRAME_IS_CF_POLL(subtype))
+ ND_PRINT("Ack/Poll");
+ else
+ ND_PRINT("Ack");
+ } else {
+ if (DATA_FRAME_IS_CF_POLL(subtype))
+ ND_PRINT("Poll");
+ }
+ if (DATA_FRAME_IS_QOS(subtype))
+ ND_PRINT("+QoS");
+ ND_PRINT(" ");
+ }
+
+#define ADDR1 (p + 4)
+#define ADDR2 (p + 10)
+#define ADDR3 (p + 16)
+#define ADDR4 (p + 24)
- printf("BSSID:%s DA:%s SA:%s ",
- etheraddr_string((hp)->bssid), etheraddr_string((hp)->da),
- etheraddr_string((hp)->sa));
+ if (!FC_TO_DS(fc) && !FC_FROM_DS(fc)) {
+ ND_PRINT("DA:%s SA:%s BSSID:%s ",
+ etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2),
+ etheraddr_string(ndo, ADDR3));
+ } else if (!FC_TO_DS(fc) && FC_FROM_DS(fc)) {
+ ND_PRINT("DA:%s BSSID:%s SA:%s ",
+ etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2),
+ etheraddr_string(ndo, ADDR3));
+ } else if (FC_TO_DS(fc) && !FC_FROM_DS(fc)) {
+ ND_PRINT("BSSID:%s SA:%s DA:%s ",
+ etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2),
+ etheraddr_string(ndo, ADDR3));
+ } else if (FC_TO_DS(fc) && FC_FROM_DS(fc)) {
+ ND_PRINT("RA:%s TA:%s DA:%s SA:%s ",
+ etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2),
+ etheraddr_string(ndo, ADDR3), etheraddr_string(ndo, ADDR4));
+ }
+
+#undef ADDR1
+#undef ADDR2
+#undef ADDR3
+#undef ADDR4
}
static void
-ctrl_header_print(u_int16_t fc, const u_char *p, const u_int8_t **srcp,
- const u_int8_t **dstp)
+mgmt_header_print(netdissect_options *ndo, const u_char *p)
{
- if (srcp != NULL)
- *srcp = NULL;
- if (dstp != NULL)
- *dstp = NULL;
- if (!eflag)
- return;
+ const struct mgmt_header_t *hp = (const struct mgmt_header_t *) p;
+
+ ND_PRINT("BSSID:%s DA:%s SA:%s ",
+ etheraddr_string(ndo, (hp)->bssid), etheraddr_string(ndo, (hp)->da),
+ etheraddr_string(ndo, (hp)->sa));
+}
+static void
+ctrl_header_print(netdissect_options *ndo, uint16_t fc, const u_char *p)
+{
switch (FC_SUBTYPE(fc)) {
+ case CTRL_BAR:
+ ND_PRINT(" RA:%s TA:%s CTL(%x) SEQ(%u) ",
+ etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ra),
+ etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ta),
+ GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->ctl),
+ GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->seq));
+ break;
+ case CTRL_BA:
+ ND_PRINT("RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_ba_hdr_t *)p)->ra));
+ break;
case CTRL_PS_POLL:
- printf("BSSID:%s TA:%s ",
- etheraddr_string(((const struct ctrl_ps_poll_t *)p)->bssid),
- etheraddr_string(((const struct ctrl_ps_poll_t *)p)->ta));
+ ND_PRINT("BSSID:%s TA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_ps_poll_hdr_t *)p)->bssid),
+ etheraddr_string(ndo, ((const struct ctrl_ps_poll_hdr_t *)p)->ta));
break;
case CTRL_RTS:
- printf("RA:%s TA:%s ",
- etheraddr_string(((const struct ctrl_rts_t *)p)->ra),
- etheraddr_string(((const struct ctrl_rts_t *)p)->ta));
+ ND_PRINT("RA:%s TA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ra),
+ etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ta));
break;
case CTRL_CTS:
- printf("RA:%s ",
- etheraddr_string(((const struct ctrl_cts_t *)p)->ra));
+ ND_PRINT("RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_cts_hdr_t *)p)->ra));
break;
case CTRL_ACK:
- printf("RA:%s ",
- etheraddr_string(((const struct ctrl_ack_t *)p)->ra));
+ ND_PRINT("RA:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_ack_hdr_t *)p)->ra));
break;
case CTRL_CF_END:
- printf("RA:%s BSSID:%s ",
- etheraddr_string(((const struct ctrl_end_t *)p)->ra),
- etheraddr_string(((const struct ctrl_end_t *)p)->bssid));
+ ND_PRINT("RA:%s BSSID:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->ra),
+ etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->bssid));
break;
case CTRL_END_ACK:
- printf("RA:%s BSSID:%s ",
- etheraddr_string(((const struct ctrl_end_ack_t *)p)->ra),
- etheraddr_string(((const struct ctrl_end_ack_t *)p)->bssid));
+ ND_PRINT("RA:%s BSSID:%s ",
+ etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->ra),
+ etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->bssid));
break;
default:
- printf("(H) Unknown Ctrl Subtype");
+ /* We shouldn't get here - we should already have quit */
break;
}
}
static int
-extract_header_length(u_int16_t fc)
+extract_header_length(netdissect_options *ndo,
+ uint16_t fc)
{
+ int len;
+
switch (FC_TYPE(fc)) {
case T_MGMT:
return MGMT_HDRLEN;
case T_CTRL:
switch (FC_SUBTYPE(fc)) {
+ case CTRL_CONTROL_WRAPPER:
+ return CTRL_CONTROL_WRAPPER_HDRLEN;
+ case CTRL_BAR:
+ return CTRL_BAR_HDRLEN;
+ case CTRL_BA:
+ return CTRL_BA_HDRLEN;
case CTRL_PS_POLL:
return CTRL_PS_POLL_HDRLEN;
case CTRL_RTS:
case CTRL_END_ACK:
return CTRL_END_ACK_HDRLEN;
default:
+ ND_PRINT("unknown 802.11 ctrl frame subtype (%u)", FC_SUBTYPE(fc));
return 0;
}
case T_DATA:
- return (FC_TO_DS(fc) && FC_FROM_DS(fc)) ? 30 : 24;
+ len = (FC_TO_DS(fc) && FC_FROM_DS(fc)) ? 30 : 24;
+ if (DATA_FRAME_IS_QOS(FC_SUBTYPE(fc)))
+ len += 2;
+ return len;
default:
- printf("unknown IEEE802.11 frame type (%d)", FC_TYPE(fc));
+ ND_PRINT("unknown 802.11 frame type (%u)", FC_TYPE(fc));
return 0;
}
}
+static int
+extract_mesh_header_length(netdissect_options *ndo, const u_char *p)
+{
+ return (GET_U_1(p) &~ 3) ? 0 : 6*(1 + (GET_U_1(p) & 3));
+}
+
/*
- * Print the 802.11 MAC header if eflag is set, and set "*srcp" and "*dstp"
- * to point to the source and destination MAC addresses in any case if
- * "srcp" and "dstp" aren't null.
+ * Print the 802.11 MAC header.
*/
-static inline void
-ieee_802_11_hdr_print(u_int16_t fc, const u_char *p, const u_int8_t **srcp,
- const u_int8_t **dstp)
+static void
+ieee_802_11_hdr_print(netdissect_options *ndo,
+ uint16_t fc, const u_char *p, u_int hdrlen,
+ u_int meshdrlen)
{
- if (vflag) {
+ if (ndo->ndo_vflag) {
if (FC_MORE_DATA(fc))
- printf("More Data ");
+ ND_PRINT("More Data ");
if (FC_MORE_FLAG(fc))
- printf("More Fragments ");
+ ND_PRINT("More Fragments ");
if (FC_POWER_MGMT(fc))
- printf("Pwr Mgmt ");
+ ND_PRINT("Pwr Mgmt ");
if (FC_RETRY(fc))
- printf("Retry ");
+ ND_PRINT("Retry ");
if (FC_ORDER(fc))
- printf("Strictly Ordered ");
- if (FC_WEP(fc))
- printf("WEP Encrypted ");
+ ND_PRINT("Strictly Ordered ");
+ if (FC_PROTECTED(fc))
+ ND_PRINT("Protected ");
if (FC_TYPE(fc) != T_CTRL || FC_SUBTYPE(fc) != CTRL_PS_POLL)
- printf("%dus ",
- EXTRACT_LE_16BITS(
- &((const struct mgmt_header_t *)p)->duration));
+ ND_PRINT("%uus ",
+ GET_LE_U_2(((const struct mgmt_header_t *)p)->duration));
+ }
+ if (meshdrlen != 0) {
+ const struct meshcntl_t *mc =
+ (const struct meshcntl_t *)(p + hdrlen - meshdrlen);
+ u_int ae = GET_U_1(mc->flags) & 3;
+
+ ND_PRINT("MeshData (AE %u TTL %u seq %u", ae,
+ GET_U_1(mc->ttl), GET_LE_U_4(mc->seq));
+ if (ae > 0)
+ ND_PRINT(" A4:%s", etheraddr_string(ndo, mc->addr4));
+ if (ae > 1)
+ ND_PRINT(" A5:%s", etheraddr_string(ndo, mc->addr5));
+ if (ae > 2)
+ ND_PRINT(" A6:%s", etheraddr_string(ndo, mc->addr6));
+ ND_PRINT(") ");
}
switch (FC_TYPE(fc)) {
case T_MGMT:
- mgmt_header_print(p, srcp, dstp);
+ mgmt_header_print(ndo, p);
break;
case T_CTRL:
- ctrl_header_print(fc, p, srcp, dstp);
+ ctrl_header_print(ndo, fc, p);
break;
case T_DATA:
- data_header_print(fc, p, srcp, dstp);
+ data_header_print(ndo, fc, p);
break;
default:
- printf("(header) unknown IEEE802.11 frame type (%d)",
- FC_TYPE(fc));
- *srcp = NULL;
- *dstp = NULL;
break;
}
}
static u_int
-ieee802_11_print(const u_char *p, u_int length, u_int caplen)
+ieee802_11_print(netdissect_options *ndo,
+ const u_char *p, u_int length, u_int orig_caplen, int pad,
+ u_int fcslen)
{
- u_int16_t fc;
- u_int hdrlen;
- const u_int8_t *src, *dst;
- u_short extracted_ethertype;
+ uint16_t fc;
+ u_int caplen, hdrlen, meshdrlen;
+ struct lladdr_info src, dst;
+ int llc_hdrlen;
+
+ ndo->ndo_protocol = "802.11";
+ caplen = orig_caplen;
+ /* Remove FCS, if present */
+ if (length < fcslen) {
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+ length -= fcslen;
+ if (caplen > length) {
+ /* Amount of FCS in actual packet data, if any */
+ fcslen = caplen - length;
+ caplen -= fcslen;
+ ndo->ndo_snapend -= fcslen;
+ }
if (caplen < IEEE802_11_FC_LEN) {
- printf("[|802.11]");
- return caplen;
+ nd_print_trunc(ndo);
+ return orig_caplen;
}
- fc = EXTRACT_LE_16BITS(p);
- hdrlen = extract_header_length(fc);
+ fc = GET_LE_U_2(p);
+ hdrlen = extract_header_length(ndo, fc);
+ if (hdrlen == 0) {
+ /* Unknown frame type or control frame subtype; quit. */
+ return (0);
+ }
+ if (pad)
+ hdrlen = roundup2(hdrlen, 4);
+ if (ndo->ndo_Hflag && FC_TYPE(fc) == T_DATA &&
+ DATA_FRAME_IS_QOS(FC_SUBTYPE(fc))) {
+ if(!ND_TTEST_1(p + hdrlen)) {
+ nd_print_trunc(ndo);
+ return hdrlen;
+ }
+ meshdrlen = extract_mesh_header_length(ndo, p + hdrlen);
+ hdrlen += meshdrlen;
+ } else
+ meshdrlen = 0;
if (caplen < hdrlen) {
- printf("[|802.11]");
+ nd_print_trunc(ndo);
return hdrlen;
}
- ieee_802_11_hdr_print(fc, p, &src, &dst);
+ if (ndo->ndo_eflag)
+ ieee_802_11_hdr_print(ndo, fc, p, hdrlen, meshdrlen);
/*
* Go past the 802.11 header.
caplen -= hdrlen;
p += hdrlen;
+ src.addr_string = etheraddr_string;
+ dst.addr_string = etheraddr_string;
switch (FC_TYPE(fc)) {
case T_MGMT:
- if (!mgmt_body_print(fc,
- (const struct mgmt_header_t *)(p - hdrlen), p)) {
- printf("[|802.11]");
+ get_mgmt_src_dst_mac(p - hdrlen, &src.addr, &dst.addr);
+ if (!mgmt_body_print(ndo, fc, src.addr, p, length)) {
+ nd_print_trunc(ndo);
return hdrlen;
}
break;
case T_CTRL:
- if (!ctrl_body_print(fc, p - hdrlen)) {
- printf("[|802.11]");
+ if (!ctrl_body_print(ndo, fc, p - hdrlen)) {
+ nd_print_trunc(ndo);
return hdrlen;
}
break;
case T_DATA:
+ if (DATA_FRAME_IS_NULL(FC_SUBTYPE(fc)))
+ return hdrlen; /* no-data frame */
/* There may be a problem w/ AP not having this bit set */
- if (FC_WEP(fc)) {
- if (!wep_print(p)) {
- printf("[|802.11]");
+ if (FC_PROTECTED(fc)) {
+ ND_PRINT("Data");
+ if (!wep_print(ndo, p)) {
+ nd_print_trunc(ndo);
return hdrlen;
}
- } else if (llc_print(p, length, caplen, dst, src,
- &extracted_ethertype) == 0) {
- /*
- * Some kinds of LLC packet we cannot
- * handle intelligently
- */
- if (!eflag)
- ieee_802_11_hdr_print(fc, p - hdrlen, NULL,
- NULL);
- if (extracted_ethertype)
- printf("(LLC %s) ",
- etherproto_string(
- htons(extracted_ethertype)));
- if (!xflag && !qflag)
- default_print(p, caplen);
+ } else {
+ get_data_src_dst_mac(fc, p - hdrlen, &src.addr, &dst.addr);
+ llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst);
+ if (llc_hdrlen < 0) {
+ /*
+ * Some kinds of LLC packet we cannot
+ * handle intelligently
+ */
+ if (!ndo->ndo_suppress_default_print)
+ ND_DEFAULTPRINT(p, caplen);
+ llc_hdrlen = -llc_hdrlen;
+ }
+ hdrlen += llc_hdrlen;
}
break;
default:
- printf("unknown 802.11 frame type (%d)", FC_TYPE(fc));
+ /* We shouldn't get here - we should already have quit */
break;
}
/*
* This is the top level routine of the printer. 'p' points
* to the 802.11 header of the packet, 'h->ts' is the timestamp,
- * 'h->length' is the length of the packet off the wire, and 'h->caplen'
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
* is the number of bytes actually captured.
*/
u_int
-ieee802_11_if_print(const struct pcap_pkthdr *h, const u_char *p)
+ieee802_11_if_print(netdissect_options *ndo,
+ const struct pcap_pkthdr *h, const u_char *p)
{
- return ieee802_11_print(p, h->len, h->caplen);
+ ndo->ndo_protocol = "802.11_if";
+ return ieee802_11_print(ndo, p, h->len, h->caplen, 0, 0);
}
-static u_int
-ieee802_11_radio_print(const u_char *p, u_int length, u_int caplen)
-{
- u_int32_t caphdr_len;
- caphdr_len = EXTRACT_32BITS(p + 4);
- if (caphdr_len < 8) {
- /*
- * Yow! The capture header length is claimed not
- * to be large enough to include even the version
- * cookie or capture header length!
- */
- printf("[|802.11]");
- return caplen;
- }
+/* $FreeBSD: src/sys/net80211/ieee80211_radiotap.h,v 1.5 2005/01/22 20:12:05 sam Exp $ */
+/* NetBSD: ieee802_11_radio.h,v 1.2 2006/02/26 03:04:03 dyoung Exp */
- if (caplen < caphdr_len) {
- printf("[|802.11]");
- return caplen;
+/*-
+ * Copyright (c) 2003, 2004 David Young. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of David Young may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID
+ * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ */
+
+/* A generic radio capture format is desirable. It must be
+ * rigidly defined (e.g., units for fields should be given),
+ * and easily extensible.
+ *
+ * The following is an extensible radio capture format. It is
+ * based on a bitmap indicating which fields are present.
+ *
+ * I am trying to describe precisely what the application programmer
+ * should expect in the following, and for that reason I tell the
+ * units and origin of each measurement (where it applies), or else I
+ * use sufficiently weaselly language ("is a monotonically nondecreasing
+ * function of...") that I cannot set false expectations for lawyerly
+ * readers.
+ */
+
+/*
+ * The radio capture header precedes the 802.11 header.
+ *
+ * Note well: all radiotap fields are little-endian.
+ */
+struct ieee80211_radiotap_header {
+ nd_uint8_t it_version; /* Version 0. Only increases
+ * for drastic changes,
+ * introduction of compatible
+ * new fields does not count.
+ */
+ nd_uint8_t it_pad;
+ nd_uint16_t it_len; /* length of the whole
+ * header in bytes, including
+ * it_version, it_pad,
+ * it_len, and data fields.
+ */
+ nd_uint32_t it_present; /* A bitmap telling which
+ * fields are present. Set bit 31
+ * (0x80000000) to extend the
+ * bitmap by another 32 bits.
+ * Additional extensions are made
+ * by setting bit 31.
+ */
+};
+
+/* Name Data type Units
+ * ---- --------- -----
+ *
+ * IEEE80211_RADIOTAP_TSFT uint64_t microseconds
+ *
+ * Value in microseconds of the MAC's 64-bit 802.11 Time
+ * Synchronization Function timer when the first bit of the
+ * MPDU arrived at the MAC. For received frames, only.
+ *
+ * IEEE80211_RADIOTAP_CHANNEL 2 x uint16_t MHz, bitmap
+ *
+ * Tx/Rx frequency in MHz, followed by flags (see below).
+ * Note that IEEE80211_RADIOTAP_XCHANNEL must be used to
+ * represent an HT channel as there is not enough room in
+ * the flags word.
+ *
+ * IEEE80211_RADIOTAP_FHSS uint16_t see below
+ *
+ * For frequency-hopping radios, the hop set (first byte)
+ * and pattern (second byte).
+ *
+ * IEEE80211_RADIOTAP_RATE uint8_t 500kb/s or index
+ *
+ * Tx/Rx data rate. If bit 0x80 is set then it represents an
+ * an MCS index and not an IEEE rate.
+ *
+ * IEEE80211_RADIOTAP_DBM_ANTSIGNAL int8_t decibels from
+ * one milliwatt (dBm)
+ *
+ * RF signal power at the antenna, decibel difference from
+ * one milliwatt.
+ *
+ * IEEE80211_RADIOTAP_DBM_ANTNOISE int8_t decibels from
+ * one milliwatt (dBm)
+ *
+ * RF noise power at the antenna, decibel difference from one
+ * milliwatt.
+ *
+ * IEEE80211_RADIOTAP_DB_ANTSIGNAL uint8_t decibel (dB)
+ *
+ * RF signal power at the antenna, decibel difference from an
+ * arbitrary, fixed reference.
+ *
+ * IEEE80211_RADIOTAP_DB_ANTNOISE uint8_t decibel (dB)
+ *
+ * RF noise power at the antenna, decibel difference from an
+ * arbitrary, fixed reference point.
+ *
+ * IEEE80211_RADIOTAP_LOCK_QUALITY uint16_t unitless
+ *
+ * Quality of Barker code lock. Unitless. Monotonically
+ * nondecreasing with "better" lock strength. Called "Signal
+ * Quality" in datasheets. (Is there a standard way to measure
+ * this?)
+ *
+ * IEEE80211_RADIOTAP_TX_ATTENUATION uint16_t unitless
+ *
+ * Transmit power expressed as unitless distance from max
+ * power set at factory calibration. 0 is max power.
+ * Monotonically nondecreasing with lower power levels.
+ *
+ * IEEE80211_RADIOTAP_DB_TX_ATTENUATION uint16_t decibels (dB)
+ *
+ * Transmit power expressed as decibel distance from max power
+ * set at factory calibration. 0 is max power. Monotonically
+ * nondecreasing with lower power levels.
+ *
+ * IEEE80211_RADIOTAP_DBM_TX_POWER int8_t decibels from
+ * one milliwatt (dBm)
+ *
+ * Transmit power expressed as dBm (decibels from a 1 milliwatt
+ * reference). This is the absolute power level measured at
+ * the antenna port.
+ *
+ * IEEE80211_RADIOTAP_FLAGS uint8_t bitmap
+ *
+ * Properties of transmitted and received frames. See flags
+ * defined below.
+ *
+ * IEEE80211_RADIOTAP_ANTENNA uint8_t antenna index
+ *
+ * Unitless indication of the Rx/Tx antenna for this packet.
+ * The first antenna is antenna 0.
+ *
+ * IEEE80211_RADIOTAP_RX_FLAGS uint16_t bitmap
+ *
+ * Properties of received frames. See flags defined below.
+ *
+ * IEEE80211_RADIOTAP_XCHANNEL uint32_t bitmap
+ * uint16_t MHz
+ * uint8_t channel number
+ * uint8_t .5 dBm
+ *
+ * Extended channel specification: flags (see below) followed by
+ * frequency in MHz, the corresponding IEEE channel number, and
+ * finally the maximum regulatory transmit power cap in .5 dBm
+ * units. This property supersedes IEEE80211_RADIOTAP_CHANNEL
+ * and only one of the two should be present.
+ *
+ * IEEE80211_RADIOTAP_MCS uint8_t known
+ * uint8_t flags
+ * uint8_t mcs
+ *
+ * Bitset indicating which fields have known values, followed
+ * by bitset of flag values, followed by the MCS rate index as
+ * in IEEE 802.11n.
+ *
+ *
+ * IEEE80211_RADIOTAP_AMPDU_STATUS u32, u16, u8, u8 unitless
+ *
+ * Contains the AMPDU information for the subframe.
+ *
+ * IEEE80211_RADIOTAP_VHT u16, u8, u8, u8[4], u8, u8, u16
+ *
+ * Contains VHT information about this frame.
+ *
+ * IEEE80211_RADIOTAP_VENDOR_NAMESPACE
+ * uint8_t OUI[3]
+ * uint8_t subspace
+ * uint16_t length
+ *
+ * The Vendor Namespace Field contains three sub-fields. The first
+ * sub-field is 3 bytes long. It contains the vendor's IEEE 802
+ * Organizationally Unique Identifier (OUI). The fourth byte is a
+ * vendor-specific "namespace selector."
+ *
+ */
+enum ieee80211_radiotap_type {
+ IEEE80211_RADIOTAP_TSFT = 0,
+ IEEE80211_RADIOTAP_FLAGS = 1,
+ IEEE80211_RADIOTAP_RATE = 2,
+ IEEE80211_RADIOTAP_CHANNEL = 3,
+ IEEE80211_RADIOTAP_FHSS = 4,
+ IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5,
+ IEEE80211_RADIOTAP_DBM_ANTNOISE = 6,
+ IEEE80211_RADIOTAP_LOCK_QUALITY = 7,
+ IEEE80211_RADIOTAP_TX_ATTENUATION = 8,
+ IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9,
+ IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
+ IEEE80211_RADIOTAP_ANTENNA = 11,
+ IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12,
+ IEEE80211_RADIOTAP_DB_ANTNOISE = 13,
+ IEEE80211_RADIOTAP_RX_FLAGS = 14,
+ /* NB: gap for netbsd definitions */
+ IEEE80211_RADIOTAP_XCHANNEL = 18,
+ IEEE80211_RADIOTAP_MCS = 19,
+ IEEE80211_RADIOTAP_AMPDU_STATUS = 20,
+ IEEE80211_RADIOTAP_VHT = 21,
+ IEEE80211_RADIOTAP_NAMESPACE = 29,
+ IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
+ IEEE80211_RADIOTAP_EXT = 31
+};
+
+/* channel attributes */
+#define IEEE80211_CHAN_TURBO 0x00010 /* Turbo channel */
+#define IEEE80211_CHAN_CCK 0x00020 /* CCK channel */
+#define IEEE80211_CHAN_OFDM 0x00040 /* OFDM channel */
+#define IEEE80211_CHAN_2GHZ 0x00080 /* 2 GHz spectrum channel. */
+#define IEEE80211_CHAN_5GHZ 0x00100 /* 5 GHz spectrum channel */
+#define IEEE80211_CHAN_PASSIVE 0x00200 /* Only passive scan allowed */
+#define IEEE80211_CHAN_DYN 0x00400 /* Dynamic CCK-OFDM channel */
+#define IEEE80211_CHAN_GFSK 0x00800 /* GFSK channel (FHSS PHY) */
+#define IEEE80211_CHAN_GSM 0x01000 /* 900 MHz spectrum channel */
+#define IEEE80211_CHAN_STURBO 0x02000 /* 11a static turbo channel only */
+#define IEEE80211_CHAN_HALF 0x04000 /* Half rate channel */
+#define IEEE80211_CHAN_QUARTER 0x08000 /* Quarter rate channel */
+#define IEEE80211_CHAN_HT20 0x10000 /* HT 20 channel */
+#define IEEE80211_CHAN_HT40U 0x20000 /* HT 40 channel w/ ext above */
+#define IEEE80211_CHAN_HT40D 0x40000 /* HT 40 channel w/ ext below */
+
+/* Useful combinations of channel characteristics, borrowed from Ethereal */
+#define IEEE80211_CHAN_A \
+ (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
+#define IEEE80211_CHAN_B \
+ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
+#define IEEE80211_CHAN_G \
+ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
+#define IEEE80211_CHAN_TA \
+ (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO)
+#define IEEE80211_CHAN_TG \
+ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN | IEEE80211_CHAN_TURBO)
+
+
+/* For IEEE80211_RADIOTAP_FLAGS */
+#define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received
+ * during CFP
+ */
+#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received
+ * with short
+ * preamble
+ */
+#define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received
+ * with WEP encryption
+ */
+#define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received
+ * with fragmentation
+ */
+#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */
+#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between
+ * 802.11 header and payload
+ * (to 32-bit boundary)
+ */
+#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* does not pass FCS check */
+
+/* For IEEE80211_RADIOTAP_RX_FLAGS */
+#define IEEE80211_RADIOTAP_F_RX_BADFCS 0x0001 /* frame failed crc check */
+#define IEEE80211_RADIOTAP_F_RX_PLCP_CRC 0x0002 /* frame failed PLCP CRC check */
+
+/* For IEEE80211_RADIOTAP_MCS known */
+#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN 0x01
+#define IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN 0x02 /* MCS index field */
+#define IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN 0x04
+#define IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN 0x08
+#define IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN 0x10
+#define IEEE80211_RADIOTAP_MCS_STBC_KNOWN 0x20
+#define IEEE80211_RADIOTAP_MCS_NESS_KNOWN 0x40
+#define IEEE80211_RADIOTAP_MCS_NESS_BIT_1 0x80
+
+/* For IEEE80211_RADIOTAP_MCS flags */
+#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK 0x03
+#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20 0
+#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 1
+#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20L 2
+#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20U 3
+#define IEEE80211_RADIOTAP_MCS_SHORT_GI 0x04 /* short guard interval */
+#define IEEE80211_RADIOTAP_MCS_HT_GREENFIELD 0x08
+#define IEEE80211_RADIOTAP_MCS_FEC_LDPC 0x10
+#define IEEE80211_RADIOTAP_MCS_STBC_MASK 0x60
+#define IEEE80211_RADIOTAP_MCS_STBC_1 1
+#define IEEE80211_RADIOTAP_MCS_STBC_2 2
+#define IEEE80211_RADIOTAP_MCS_STBC_3 3
+#define IEEE80211_RADIOTAP_MCS_STBC_SHIFT 5
+#define IEEE80211_RADIOTAP_MCS_NESS_BIT_0 0x80
+
+/* For IEEE80211_RADIOTAP_AMPDU_STATUS */
+#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN 0x0001
+#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN 0x0002
+#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN 0x0004
+#define IEEE80211_RADIOTAP_AMPDU_IS_LAST 0x0008
+#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR 0x0010
+#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN 0x0020
+
+/* For IEEE80211_RADIOTAP_VHT known */
+#define IEEE80211_RADIOTAP_VHT_STBC_KNOWN 0x0001
+#define IEEE80211_RADIOTAP_VHT_TXOP_PS_NA_KNOWN 0x0002
+#define IEEE80211_RADIOTAP_VHT_GUARD_INTERVAL_KNOWN 0x0004
+#define IEEE80211_RADIOTAP_VHT_SGI_NSYM_DIS_KNOWN 0x0008
+#define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA_OFDM_SYM_KNOWN 0x0010
+#define IEEE80211_RADIOTAP_VHT_BEAMFORMED_KNOWN 0x0020
+#define IEEE80211_RADIOTAP_VHT_BANDWIDTH_KNOWN 0x0040
+#define IEEE80211_RADIOTAP_VHT_GROUP_ID_KNOWN 0x0080
+#define IEEE80211_RADIOTAP_VHT_PARTIAL_AID_KNOWN 0x0100
+
+/* For IEEE80211_RADIOTAP_VHT flags */
+#define IEEE80211_RADIOTAP_VHT_STBC 0x01
+#define IEEE80211_RADIOTAP_VHT_TXOP_PS_NA 0x02
+#define IEEE80211_RADIOTAP_VHT_SHORT_GI 0x04
+#define IEEE80211_RADIOTAP_VHT_SGI_NSYM_M10_9 0x08
+#define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA_OFDM_SYM 0x10
+#define IEEE80211_RADIOTAP_VHT_BEAMFORMED 0x20
+
+#define IEEE80211_RADIOTAP_VHT_BANDWIDTH_MASK 0x1f
+
+#define IEEE80211_RADIOTAP_VHT_NSS_MASK 0x0f
+#define IEEE80211_RADIOTAP_VHT_MCS_MASK 0xf0
+#define IEEE80211_RADIOTAP_VHT_MCS_SHIFT 4
+
+#define IEEE80211_RADIOTAP_CODING_LDPC_USERn 0x01
+
+#define IEEE80211_CHAN_FHSS \
+ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
+#define IEEE80211_CHAN_A \
+ (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
+#define IEEE80211_CHAN_B \
+ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
+#define IEEE80211_CHAN_PUREG \
+ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM)
+#define IEEE80211_CHAN_G \
+ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
+
+#define IS_CHAN_FHSS(flags) \
+ ((flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS)
+#define IS_CHAN_A(flags) \
+ ((flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A)
+#define IS_CHAN_B(flags) \
+ ((flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B)
+#define IS_CHAN_PUREG(flags) \
+ ((flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG)
+#define IS_CHAN_G(flags) \
+ ((flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G)
+#define IS_CHAN_ANYG(flags) \
+ (IS_CHAN_PUREG(flags) || IS_CHAN_G(flags))
+
+static void
+print_chaninfo(netdissect_options *ndo,
+ uint16_t freq, int flags, int presentflags)
+{
+ ND_PRINT("%u MHz", freq);
+ if (presentflags & (1 << IEEE80211_RADIOTAP_MCS)) {
+ /*
+ * We have the MCS field, so this is 11n, regardless
+ * of what the channel flags say.
+ */
+ ND_PRINT(" 11n");
+ } else {
+ if (IS_CHAN_FHSS(flags))
+ ND_PRINT(" FHSS");
+ if (IS_CHAN_A(flags)) {
+ if (flags & IEEE80211_CHAN_HALF)
+ ND_PRINT(" 11a/10Mhz");
+ else if (flags & IEEE80211_CHAN_QUARTER)
+ ND_PRINT(" 11a/5Mhz");
+ else
+ ND_PRINT(" 11a");
+ }
+ if (IS_CHAN_ANYG(flags)) {
+ if (flags & IEEE80211_CHAN_HALF)
+ ND_PRINT(" 11g/10Mhz");
+ else if (flags & IEEE80211_CHAN_QUARTER)
+ ND_PRINT(" 11g/5Mhz");
+ else
+ ND_PRINT(" 11g");
+ } else if (IS_CHAN_B(flags))
+ ND_PRINT(" 11b");
+ if (flags & IEEE80211_CHAN_TURBO)
+ ND_PRINT(" Turbo");
}
+ /*
+ * These apply to 11n.
+ */
+ if (flags & IEEE80211_CHAN_HT20)
+ ND_PRINT(" ht/20");
+ else if (flags & IEEE80211_CHAN_HT40D)
+ ND_PRINT(" ht/40-");
+ else if (flags & IEEE80211_CHAN_HT40U)
+ ND_PRINT(" ht/40+");
+ ND_PRINT(" ");
+}
+
+static int
+print_radiotap_field(netdissect_options *ndo,
+ struct cpack_state *s, uint32_t bit, uint8_t *flagsp,
+ uint32_t presentflags)
+{
+ u_int i;
+ int rc;
+
+ switch (bit) {
+
+ case IEEE80211_RADIOTAP_TSFT: {
+ uint64_t tsft;
- return caphdr_len + ieee802_11_print(p + caphdr_len,
- length - caphdr_len, caplen - caphdr_len);
+ rc = cpack_uint64(ndo, s, &tsft);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%" PRIu64 "us tsft ", tsft);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_FLAGS: {
+ uint8_t flagsval;
+
+ rc = cpack_uint8(ndo, s, &flagsval);
+ if (rc != 0)
+ goto trunc;
+ *flagsp = flagsval;
+ if (flagsval & IEEE80211_RADIOTAP_F_CFP)
+ ND_PRINT("cfp ");
+ if (flagsval & IEEE80211_RADIOTAP_F_SHORTPRE)
+ ND_PRINT("short preamble ");
+ if (flagsval & IEEE80211_RADIOTAP_F_WEP)
+ ND_PRINT("wep ");
+ if (flagsval & IEEE80211_RADIOTAP_F_FRAG)
+ ND_PRINT("fragmented ");
+ if (flagsval & IEEE80211_RADIOTAP_F_BADFCS)
+ ND_PRINT("bad-fcs ");
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_RATE: {
+ uint8_t rate;
+
+ rc = cpack_uint8(ndo, s, &rate);
+ if (rc != 0)
+ goto trunc;
+ /*
+ * XXX On FreeBSD rate & 0x80 means we have an MCS. On
+ * Linux and AirPcap it does not. (What about
+ * macOS, NetBSD, OpenBSD, and DragonFly BSD?)
+ *
+ * This is an issue either for proprietary extensions
+ * to 11a or 11g, which do exist, or for 11n
+ * implementations that stuff a rate value into
+ * this field, which also appear to exist.
+ *
+ * We currently handle that by assuming that
+ * if the 0x80 bit is set *and* the remaining
+ * bits have a value between 0 and 15 it's
+ * an MCS value, otherwise it's a rate. If
+ * there are cases where systems that use
+ * "0x80 + MCS index" for MCS indices > 15,
+ * or stuff a rate value here between 64 and
+ * 71.5 Mb/s in here, we'll need a preference
+ * setting. Such rates do exist, e.g. 11n
+ * MCS 7 at 20 MHz with a long guard interval.
+ */
+ if (rate >= 0x80 && rate <= 0x8f) {
+ /*
+ * XXX - we don't know the channel width
+ * or guard interval length, so we can't
+ * convert this to a data rate.
+ *
+ * If you want us to show a data rate,
+ * use the MCS field, not the Rate field;
+ * the MCS field includes not only the
+ * MCS index, it also includes bandwidth
+ * and guard interval information.
+ *
+ * XXX - can we get the channel width
+ * from XChannel and the guard interval
+ * information from Flags, at least on
+ * FreeBSD?
+ */
+ ND_PRINT("MCS %u ", rate & 0x7f);
+ } else
+ ND_PRINT("%2.1f Mb/s ", .5 * rate);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_CHANNEL: {
+ uint16_t frequency;
+ uint16_t flags;
+
+ rc = cpack_uint16(ndo, s, &frequency);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(ndo, s, &flags);
+ if (rc != 0)
+ goto trunc;
+ /*
+ * If CHANNEL and XCHANNEL are both present, skip
+ * CHANNEL.
+ */
+ if (presentflags & (1 << IEEE80211_RADIOTAP_XCHANNEL))
+ break;
+ print_chaninfo(ndo, frequency, flags, presentflags);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_FHSS: {
+ uint8_t hopset;
+ uint8_t hoppat;
+
+ rc = cpack_uint8(ndo, s, &hopset);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &hoppat);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("fhset %u fhpat %u ", hopset, hoppat);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: {
+ int8_t dbm_antsignal;
+
+ rc = cpack_int8(ndo, s, &dbm_antsignal);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%ddBm signal ", dbm_antsignal);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_DBM_ANTNOISE: {
+ int8_t dbm_antnoise;
+
+ rc = cpack_int8(ndo, s, &dbm_antnoise);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%ddBm noise ", dbm_antnoise);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_LOCK_QUALITY: {
+ uint16_t lock_quality;
+
+ rc = cpack_uint16(ndo, s, &lock_quality);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%u sq ", lock_quality);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_TX_ATTENUATION: {
+ int16_t tx_attenuation;
+
+ rc = cpack_int16(ndo, s, &tx_attenuation);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%d tx power ", -tx_attenuation);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_DB_TX_ATTENUATION: {
+ int8_t db_tx_attenuation;
+
+ rc = cpack_int8(ndo, s, &db_tx_attenuation);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%ddB tx attenuation ", -db_tx_attenuation);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_DBM_TX_POWER: {
+ int8_t dbm_tx_power;
+
+ rc = cpack_int8(ndo, s, &dbm_tx_power);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%ddBm tx power ", dbm_tx_power);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_ANTENNA: {
+ uint8_t antenna;
+
+ rc = cpack_uint8(ndo, s, &antenna);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("antenna %u ", antenna);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_DB_ANTSIGNAL: {
+ uint8_t db_antsignal;
+
+ rc = cpack_uint8(ndo, s, &db_antsignal);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%udB signal ", db_antsignal);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_DB_ANTNOISE: {
+ uint8_t db_antnoise;
+
+ rc = cpack_uint8(ndo, s, &db_antnoise);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT("%udB noise ", db_antnoise);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_RX_FLAGS: {
+ uint16_t rx_flags;
+
+ rc = cpack_uint16(ndo, s, &rx_flags);
+ if (rc != 0)
+ goto trunc;
+ /* Do nothing for now */
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_XCHANNEL: {
+ uint32_t flags;
+ uint16_t frequency;
+ uint8_t channel;
+ uint8_t maxpower;
+
+ rc = cpack_uint32(ndo, s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(ndo, s, &frequency);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &channel);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &maxpower);
+ if (rc != 0)
+ goto trunc;
+ print_chaninfo(ndo, frequency, flags, presentflags);
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_MCS: {
+ uint8_t known;
+ uint8_t flags;
+ uint8_t mcs_index;
+ static const char *ht_bandwidth[4] = {
+ "20 MHz",
+ "40 MHz",
+ "20 MHz (L)",
+ "20 MHz (U)"
+ };
+ float htrate;
+
+ rc = cpack_uint8(ndo, s, &known);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &mcs_index);
+ if (rc != 0)
+ goto trunc;
+ if (known & IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN) {
+ /*
+ * We know the MCS index.
+ */
+ if (mcs_index <= MAX_MCS_INDEX) {
+ /*
+ * And it's in-range.
+ */
+ if (known & (IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN|IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN)) {
+ /*
+ * And we know both the bandwidth and
+ * the guard interval, so we can look
+ * up the rate.
+ */
+ htrate =
+ ieee80211_float_htrates
+ [mcs_index]
+ [((flags & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK) == IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 ? 1 : 0)]
+ [((flags & IEEE80211_RADIOTAP_MCS_SHORT_GI) ? 1 : 0)];
+ } else {
+ /*
+ * We don't know both the bandwidth
+ * and the guard interval, so we can
+ * only report the MCS index.
+ */
+ htrate = 0.0;
+ }
+ } else {
+ /*
+ * The MCS value is out of range.
+ */
+ htrate = 0.0;
+ }
+ if (htrate != 0.0) {
+ /*
+ * We have the rate.
+ * Print it.
+ */
+ ND_PRINT("%.1f Mb/s MCS %u ", htrate, mcs_index);
+ } else {
+ /*
+ * We at least have the MCS index.
+ * Print it.
+ */
+ ND_PRINT("MCS %u ", mcs_index);
+ }
+ }
+ if (known & IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN) {
+ ND_PRINT("%s ",
+ ht_bandwidth[flags & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK]);
+ }
+ if (known & IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN) {
+ ND_PRINT("%s GI ",
+ (flags & IEEE80211_RADIOTAP_MCS_SHORT_GI) ?
+ "short" : "long");
+ }
+ if (known & IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN) {
+ ND_PRINT("%s ",
+ (flags & IEEE80211_RADIOTAP_MCS_HT_GREENFIELD) ?
+ "greenfield" : "mixed");
+ }
+ if (known & IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN) {
+ ND_PRINT("%s FEC ",
+ (flags & IEEE80211_RADIOTAP_MCS_FEC_LDPC) ?
+ "LDPC" : "BCC");
+ }
+ if (known & IEEE80211_RADIOTAP_MCS_STBC_KNOWN) {
+ ND_PRINT("RX-STBC%u ",
+ (flags & IEEE80211_RADIOTAP_MCS_STBC_MASK) >> IEEE80211_RADIOTAP_MCS_STBC_SHIFT);
+ }
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_AMPDU_STATUS: {
+ uint32_t reference_num;
+ uint16_t flags;
+ uint8_t delim_crc;
+ uint8_t reserved;
+
+ rc = cpack_uint32(ndo, s, &reference_num);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(ndo, s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &delim_crc);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &reserved);
+ if (rc != 0)
+ goto trunc;
+ /* Do nothing for now */
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_VHT: {
+ uint16_t known;
+ uint8_t flags;
+ uint8_t bandwidth;
+ uint8_t mcs_nss[4];
+ uint8_t coding;
+ uint8_t group_id;
+ uint16_t partial_aid;
+ static const char *vht_bandwidth[32] = {
+ "20 MHz",
+ "40 MHz",
+ "20 MHz (L)",
+ "20 MHz (U)",
+ "80 MHz",
+ "80 MHz (L)",
+ "80 MHz (U)",
+ "80 MHz (LL)",
+ "80 MHz (LU)",
+ "80 MHz (UL)",
+ "80 MHz (UU)",
+ "160 MHz",
+ "160 MHz (L)",
+ "160 MHz (U)",
+ "160 MHz (LL)",
+ "160 MHz (LU)",
+ "160 MHz (UL)",
+ "160 MHz (UU)",
+ "160 MHz (LLL)",
+ "160 MHz (LLU)",
+ "160 MHz (LUL)",
+ "160 MHz (UUU)",
+ "160 MHz (ULL)",
+ "160 MHz (ULU)",
+ "160 MHz (UUL)",
+ "160 MHz (UUU)",
+ "unknown (26)",
+ "unknown (27)",
+ "unknown (28)",
+ "unknown (29)",
+ "unknown (30)",
+ "unknown (31)"
+ };
+
+ rc = cpack_uint16(ndo, s, &known);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &bandwidth);
+ if (rc != 0)
+ goto trunc;
+ for (i = 0; i < 4; i++) {
+ rc = cpack_uint8(ndo, s, &mcs_nss[i]);
+ if (rc != 0)
+ goto trunc;
+ }
+ rc = cpack_uint8(ndo, s, &coding);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(ndo, s, &group_id);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(ndo, s, &partial_aid);
+ if (rc != 0)
+ goto trunc;
+ for (i = 0; i < 4; i++) {
+ u_int nss, mcs;
+ nss = mcs_nss[i] & IEEE80211_RADIOTAP_VHT_NSS_MASK;
+ mcs = (mcs_nss[i] & IEEE80211_RADIOTAP_VHT_MCS_MASK) >> IEEE80211_RADIOTAP_VHT_MCS_SHIFT;
+
+ if (nss == 0)
+ continue;
+
+ ND_PRINT("User %u MCS %u ", i, mcs);
+ ND_PRINT("%s FEC ",
+ (coding & (IEEE80211_RADIOTAP_CODING_LDPC_USERn << i)) ?
+ "LDPC" : "BCC");
+ }
+ if (known & IEEE80211_RADIOTAP_VHT_BANDWIDTH_KNOWN) {
+ ND_PRINT("%s ",
+ vht_bandwidth[bandwidth & IEEE80211_RADIOTAP_VHT_BANDWIDTH_MASK]);
+ }
+ if (known & IEEE80211_RADIOTAP_VHT_GUARD_INTERVAL_KNOWN) {
+ ND_PRINT("%s GI ",
+ (flags & IEEE80211_RADIOTAP_VHT_SHORT_GI) ?
+ "short" : "long");
+ }
+ break;
+ }
+
+ default:
+ /* this bit indicates a field whose
+ * size we do not know, so we cannot
+ * proceed. Just print the bit number.
+ */
+ ND_PRINT("[bit %u] ", bit);
+ return -1;
+ }
+
+ return 0;
+
+trunc:
+ nd_print_trunc(ndo);
+ return rc;
+}
+
+
+static int
+print_in_radiotap_namespace(netdissect_options *ndo,
+ struct cpack_state *s, uint8_t *flags,
+ uint32_t presentflags, int bit0)
+{
+#define BITNO_32(x) (((x) >> 16) ? 16 + BITNO_16((x) >> 16) : BITNO_16((x)))
+#define BITNO_16(x) (((x) >> 8) ? 8 + BITNO_8((x) >> 8) : BITNO_8((x)))
+#define BITNO_8(x) (((x) >> 4) ? 4 + BITNO_4((x) >> 4) : BITNO_4((x)))
+#define BITNO_4(x) (((x) >> 2) ? 2 + BITNO_2((x) >> 2) : BITNO_2((x)))
+#define BITNO_2(x) (((x) & 2) ? 1 : 0)
+ uint32_t present, next_present;
+ int bitno;
+ enum ieee80211_radiotap_type bit;
+ int rc;
+
+ for (present = presentflags; present; present = next_present) {
+ /*
+ * Clear the least significant bit that is set.
+ */
+ next_present = present & (present - 1);
+
+ /*
+ * Get the bit number, within this presence word,
+ * of the remaining least significant bit that
+ * is set.
+ */
+ bitno = BITNO_32(present ^ next_present);
+
+ /*
+ * Stop if this is one of the "same meaning
+ * in all presence flags" bits.
+ */
+ if (bitno >= IEEE80211_RADIOTAP_NAMESPACE)
+ break;
+
+ /*
+ * Get the radiotap bit number of that bit.
+ */
+ bit = (enum ieee80211_radiotap_type)(bit0 + bitno);
+
+ rc = print_radiotap_field(ndo, s, bit, flags, presentflags);
+ if (rc != 0)
+ return rc;
+ }
+
+ return 0;
+}
+
+u_int
+ieee802_11_radio_print(netdissect_options *ndo,
+ const u_char *p, u_int length, u_int caplen)
+{
+#define BIT(n) (1U << n)
+#define IS_EXTENDED(__p) \
+ (GET_LE_U_4(__p) & BIT(IEEE80211_RADIOTAP_EXT)) != 0
+
+ struct cpack_state cpacker;
+ const struct ieee80211_radiotap_header *hdr;
+ uint32_t presentflags;
+ const nd_uint32_t *presentp, *last_presentp;
+ int vendor_namespace;
+ uint8_t vendor_oui[3];
+ uint8_t vendor_subnamespace;
+ uint16_t skip_length;
+ int bit0;
+ u_int len;
+ uint8_t flags;
+ int pad;
+ u_int fcslen;
+
+ ndo->ndo_protocol = "802.11_radio";
+ if (caplen < sizeof(*hdr)) {
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+
+ hdr = (const struct ieee80211_radiotap_header *)p;
+
+ len = GET_LE_U_2(hdr->it_len);
+ if (len < sizeof(*hdr)) {
+ /*
+ * The length is the length of the entire header, so
+ * it must be as large as the fixed-length part of
+ * the header.
+ */
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+
+ /*
+ * If we don't have the entire radiotap header, just give up.
+ */
+ if (caplen < len) {
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+ cpack_init(&cpacker, (const uint8_t *)hdr, len); /* align against header start */
+ cpack_advance(&cpacker, sizeof(*hdr)); /* includes the 1st bitmap */
+ for (last_presentp = &hdr->it_present;
+ (const u_char*)(last_presentp + 1) <= p + len &&
+ IS_EXTENDED(last_presentp);
+ last_presentp++)
+ cpack_advance(&cpacker, sizeof(hdr->it_present)); /* more bitmaps */
+
+ /* are there more bitmap extensions than bytes in header? */
+ if ((const u_char*)(last_presentp + 1) > p + len) {
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+
+ /*
+ * Start out at the beginning of the default radiotap namespace.
+ */
+ bit0 = 0;
+ vendor_namespace = 0;
+ memset(vendor_oui, 0, 3);
+ vendor_subnamespace = 0;
+ skip_length = 0;
+ /* Assume no flags */
+ flags = 0;
+ /* Assume no Atheros padding between 802.11 header and body */
+ pad = 0;
+ /* Assume no FCS at end of frame */
+ fcslen = 0;
+ for (presentp = &hdr->it_present; presentp <= last_presentp;
+ presentp++) {
+ presentflags = GET_LE_U_4(presentp);
+
+ /*
+ * If this is a vendor namespace, we don't handle it.
+ */
+ if (vendor_namespace) {
+ /*
+ * Skip past the stuff we don't understand.
+ * If we add support for any vendor namespaces,
+ * it'd be added here; use vendor_oui and
+ * vendor_subnamespace to interpret the fields.
+ */
+ if (cpack_advance(&cpacker, skip_length) != 0) {
+ /*
+ * Ran out of space in the packet.
+ */
+ break;
+ }
+
+ /*
+ * We've skipped it all; nothing more to
+ * skip.
+ */
+ skip_length = 0;
+ } else {
+ if (print_in_radiotap_namespace(ndo, &cpacker,
+ &flags, presentflags, bit0) != 0) {
+ /*
+ * Fatal error - can't process anything
+ * more in the radiotap header.
+ */
+ break;
+ }
+ }
+
+ /*
+ * Handle the namespace switch bits; we've already handled
+ * the extension bit in all but the last word above.
+ */
+ switch (presentflags &
+ (BIT(IEEE80211_RADIOTAP_NAMESPACE)|BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE))) {
+
+ case 0:
+ /*
+ * We're not changing namespaces.
+ * advance to the next 32 bits in the current
+ * namespace.
+ */
+ bit0 += 32;
+ break;
+
+ case BIT(IEEE80211_RADIOTAP_NAMESPACE):
+ /*
+ * We're switching to the radiotap namespace.
+ * Reset the presence-bitmap index to 0, and
+ * reset the namespace to the default radiotap
+ * namespace.
+ */
+ bit0 = 0;
+ vendor_namespace = 0;
+ memset(vendor_oui, 0, 3);
+ vendor_subnamespace = 0;
+ skip_length = 0;
+ break;
+
+ case BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE):
+ /*
+ * We're switching to a vendor namespace.
+ * Reset the presence-bitmap index to 0,
+ * note that we're in a vendor namespace,
+ * and fetch the fields of the Vendor Namespace
+ * item.
+ */
+ bit0 = 0;
+ vendor_namespace = 1;
+ if ((cpack_align_and_reserve(&cpacker, 2)) == NULL) {
+ nd_print_trunc(ndo);
+ break;
+ }
+ if (cpack_uint8(ndo, &cpacker, &vendor_oui[0]) != 0) {
+ nd_print_trunc(ndo);
+ break;
+ }
+ if (cpack_uint8(ndo, &cpacker, &vendor_oui[1]) != 0) {
+ nd_print_trunc(ndo);
+ break;
+ }
+ if (cpack_uint8(ndo, &cpacker, &vendor_oui[2]) != 0) {
+ nd_print_trunc(ndo);
+ break;
+ }
+ if (cpack_uint8(ndo, &cpacker, &vendor_subnamespace) != 0) {
+ nd_print_trunc(ndo);
+ break;
+ }
+ if (cpack_uint16(ndo, &cpacker, &skip_length) != 0) {
+ nd_print_trunc(ndo);
+ break;
+ }
+ break;
+
+ default:
+ /*
+ * Illegal combination. The behavior in this
+ * case is undefined by the radiotap spec; we
+ * just ignore both bits.
+ */
+ break;
+ }
+ }
+
+ if (flags & IEEE80211_RADIOTAP_F_DATAPAD)
+ pad = 1; /* Atheros padding */
+ if (flags & IEEE80211_RADIOTAP_F_FCS)
+ fcslen = 4; /* FCS at end of packet */
+ return len + ieee802_11_print(ndo, p + len, length - len, caplen - len, pad,
+ fcslen);
+#undef BITNO_32
+#undef BITNO_16
+#undef BITNO_8
+#undef BITNO_4
+#undef BITNO_2
+#undef BIT
+}
+
+static u_int
+ieee802_11_radio_avs_print(netdissect_options *ndo,
+ const u_char *p, u_int length, u_int caplen)
+{
+ uint32_t caphdr_len;
+
+ ndo->ndo_protocol = "802.11_radio_avs";
+ if (caplen < 8) {
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+
+ caphdr_len = GET_BE_U_4(p + 4);
+ if (caphdr_len < 8) {
+ /*
+ * Yow! The capture header length is claimed not
+ * to be large enough to include even the version
+ * cookie or capture header length!
+ */
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+
+ if (caplen < caphdr_len) {
+ nd_print_trunc(ndo);
+ return caplen;
+ }
+
+ return caphdr_len + ieee802_11_print(ndo, p + caphdr_len,
+ length - caphdr_len, caplen - caphdr_len, 0, 0);
}
#define PRISM_HDR_LEN 144
+#define WLANCAP_MAGIC_COOKIE_BASE 0x80211000
#define WLANCAP_MAGIC_COOKIE_V1 0x80211001
+#define WLANCAP_MAGIC_COOKIE_V2 0x80211002
/*
* For DLT_PRISM_HEADER; like DLT_IEEE802_11, but with an extra header,
* containing information such as radio information, which we
* currently ignore.
*
- * If, however, the packet begins with WLANCAP_MAGIC_COOKIE_V1, it's
- * really DLT_IEEE802_11_RADIO (currently, on Linux, there's no
- * ARPHRD_ type for DLT_IEEE802_11_RADIO, as there is a
- * ARPHRD_IEEE80211_PRISM for DLT_PRISM_HEADER, so
- * ARPHRD_IEEE80211_PRISM is used for DLT_IEEE802_11_RADIO, and
- * the first 4 bytes of the header are used to indicate which it is).
+ * If, however, the packet begins with WLANCAP_MAGIC_COOKIE_V1 or
+ * WLANCAP_MAGIC_COOKIE_V2, it's really DLT_IEEE802_11_RADIO_AVS
+ * (currently, on Linux, there's no ARPHRD_ type for
+ * DLT_IEEE802_11_RADIO_AVS, as there is a ARPHRD_IEEE80211_PRISM
+ * for DLT_PRISM_HEADER, so ARPHRD_IEEE80211_PRISM is used for
+ * the AVS header, and the first 4 bytes of the header are used to
+ * indicate whether it's a Prism header or an AVS header).
*/
u_int
-prism_if_print(const struct pcap_pkthdr *h, const u_char *p)
+prism_if_print(netdissect_options *ndo,
+ const struct pcap_pkthdr *h, const u_char *p)
{
u_int caplen = h->caplen;
u_int length = h->len;
+ uint32_t msgcode;
+ ndo->ndo_protocol = "prism_if";
if (caplen < 4) {
- printf("[|802.11]");
+ nd_print_trunc(ndo);
return caplen;
}
- if (EXTRACT_32BITS(p) == WLANCAP_MAGIC_COOKIE_V1)
- return ieee802_11_radio_print(p, length, caplen);
+ msgcode = GET_BE_U_4(p);
+ if (msgcode == WLANCAP_MAGIC_COOKIE_V1 ||
+ msgcode == WLANCAP_MAGIC_COOKIE_V2)
+ return ieee802_11_radio_avs_print(ndo, p, length, caplen);
if (caplen < PRISM_HDR_LEN) {
- printf("[|802.11]");
+ nd_print_trunc(ndo);
return caplen;
}
- return PRISM_HDR_LEN + ieee802_11_print(p + PRISM_HDR_LEN,
- length - PRISM_HDR_LEN, caplen - PRISM_HDR_LEN);
+ return PRISM_HDR_LEN + ieee802_11_print(ndo, p + PRISM_HDR_LEN,
+ length - PRISM_HDR_LEN, caplen - PRISM_HDR_LEN, 0, 0);
}
/*
* For DLT_IEEE802_11_RADIO; like DLT_IEEE802_11, but with an extra
- * header, containing information such as radio information, which we
- * currently ignore.
+ * header, containing information such as radio information.
*/
u_int
-ieee802_11_radio_if_print(const struct pcap_pkthdr *h, const u_char *p)
+ieee802_11_radio_if_print(netdissect_options *ndo,
+ const struct pcap_pkthdr *h, const u_char *p)
{
- u_int caplen = h->caplen;
- u_int length = h->len;
-
- if (caplen < 8) {
- printf("[|802.11]");
- return caplen;
- }
+ ndo->ndo_protocol = "802.11_radio_if";
+ return ieee802_11_radio_print(ndo, p, h->len, h->caplen);
+}
- return ieee802_11_radio_print(p, length, caplen);
+/*
+ * For DLT_IEEE802_11_RADIO_AVS; like DLT_IEEE802_11, but with an
+ * extra header, containing information such as radio information,
+ * which we currently ignore.
+ */
+u_int
+ieee802_11_radio_avs_if_print(netdissect_options *ndo,
+ const struct pcap_pkthdr *h, const u_char *p)
+{
+ ndo->ndo_protocol = "802.11_radio_avs_if";
+ return ieee802_11_radio_avs_print(ndo, p, h->len, h->caplen);
}
projects / tcpdump / blobdiff