Amazing-Mirror/fragattacks
1
0
Fork 0
mirror of https://github.com/vanhoefm/fragattacks.git synced 2024-11-28 18:28:23 -05:00
Code Issues Projects Releases Wiki Activity

wlantest: Move Mgmt and Data frame processing into their own files

Browse Source
This commit is contained in:
Jouni Malinen 2010-11-06 18:01:24 +02:00
parent b50111fbb2
commit 2d73f0a875
5 changed files with 567 additions and 525 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
wlantest/Makefile
View File

@ -45,6 +45,8 @@ OBJS += wlantest.o
OBJS += readpcap.o
OBJS += monitor.o
OBJS += process.o
OBJS += rx_mgmt.o
OBJS += rx_data.o
OBJS += bss.o
OBJS += sta.o
OBJS += crc32.o

525
wlantest/process.c
View File

@ -18,534 +18,9 @@
#include "utils/radiotap.h"
#include "utils/radiotap_iter.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "wlantest.h"
static const char * mgmt_stype(u16 stype)
{
switch (stype) {
case WLAN_FC_STYPE_ASSOC_REQ:
return "ASSOC-REQ";
case WLAN_FC_STYPE_ASSOC_RESP:
return "ASSOC-RESP";
case WLAN_FC_STYPE_REASSOC_REQ:
return "REASSOC-REQ";
case WLAN_FC_STYPE_REASSOC_RESP:
return "REASSOC-RESP";
case WLAN_FC_STYPE_PROBE_REQ:
return "PROBE-REQ";
case WLAN_FC_STYPE_PROBE_RESP:
return "PROBE-RESP";
case WLAN_FC_STYPE_BEACON:
return "BEACON";
case WLAN_FC_STYPE_ATIM:
return "ATIM";
case WLAN_FC_STYPE_DISASSOC:
return "DISASSOC";
case WLAN_FC_STYPE_AUTH:
return "AUTH";
case WLAN_FC_STYPE_DEAUTH:
return "DEAUTH";
case WLAN_FC_STYPE_ACTION:
return "ACTION";
}
return "??";
}
static void rx_mgmt_beacon(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct ieee802_11_elems elems;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (bss->proberesp_seen)
return; /* do not override with Beacon data */
bss->capab_info = le_to_host16(mgmt->u.beacon.capab_info);
if (ieee802_11_parse_elems(mgmt->u.beacon.variable,
len - (mgmt->u.beacon.variable - data),
&elems, 0) == ParseFailed) {
if (bss->parse_error_reported)
return;
wpa_printf(MSG_INFO, "Invalid IEs in a Beacon frame from "
MACSTR, MAC2STR(mgmt->sa));
bss->parse_error_reported = 1;
return;
}
bss_update(bss, &elems);
}
static void rx_mgmt_probe_resp(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct ieee802_11_elems elems;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
bss->capab_info = le_to_host16(mgmt->u.probe_resp.capab_info);
if (ieee802_11_parse_elems(mgmt->u.probe_resp.variable,
len - (mgmt->u.probe_resp.variable - data),
&elems, 0) == ParseFailed) {
if (bss->parse_error_reported)
return;
wpa_printf(MSG_INFO, "Invalid IEs in a Probe Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
bss->parse_error_reported = 1;
return;
}
bss_update(bss, &elems);
}
static void rx_mgmt_auth(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 alg, trans, status;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 6) {
wpa_printf(MSG_INFO, "Too short Authentication frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
alg = le_to_host16(mgmt->u.auth.auth_alg);
trans = le_to_host16(mgmt->u.auth.auth_transaction);
status = le_to_host16(mgmt->u.auth.status_code);
wpa_printf(MSG_DEBUG, "AUTH " MACSTR " -> " MACSTR
" (alg=%u trans=%u status=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), alg, trans, status);
if (alg == 0 && trans == 2 && status == 0) {
if (sta->state == STATE1) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 2 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE2;
}
}
}
static void rx_mgmt_deauth(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 2) {
wpa_printf(MSG_INFO, "Too short Deauthentication frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "DEAUTH " MACSTR " -> " MACSTR
" (reason=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.deauth.reason_code));
if (sta->state != STATE1) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 1 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE1;
}
}
static void rx_mgmt_assoc_req(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 4) {
wpa_printf(MSG_INFO, "Too short Association Request frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "ASSOCREQ " MACSTR " -> " MACSTR
" (capab=0x%x listen_int=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.assoc_req.capab_info),
le_to_host16(mgmt->u.assoc_req.listen_interval));
}
static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 capab, status, aid;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->da);
if (sta == NULL)
return;
if (len < 24 + 6) {
wpa_printf(MSG_INFO, "Too short Association Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
capab = le_to_host16(mgmt->u.assoc_resp.capab_info);
status = le_to_host16(mgmt->u.assoc_resp.status_code);
aid = le_to_host16(mgmt->u.assoc_resp.aid);
wpa_printf(MSG_DEBUG, "ASSOCRESP " MACSTR " -> " MACSTR
" (capab=0x%x status=%u aid=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
aid & 0x3fff);
if (status)
return;
if ((aid & 0xc000) != 0xc000) {
wpa_printf(MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
"in Association Response from " MACSTR,
MAC2STR(mgmt->sa));
}
sta->aid = aid & 0xc000;
if (sta->state < STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 when "
"getting associated", MAC2STR(sta->addr));
}
if (sta->state < STATE3) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 3 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE3;
}
}
static void rx_mgmt_reassoc_req(struct wlantest *wt, const u8 *data,
size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 4 + ETH_ALEN) {
wpa_printf(MSG_INFO, "Too short Reassociation Request frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "REASSOCREQ " MACSTR " -> " MACSTR
" (capab=0x%x listen_int=%u current_ap=" MACSTR ")",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.reassoc_req.capab_info),
le_to_host16(mgmt->u.reassoc_req.listen_interval),
MAC2STR(mgmt->u.reassoc_req.current_ap));
}
static void rx_mgmt_reassoc_resp(struct wlantest *wt, const u8 *data,
size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 capab, status, aid;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->da);
if (sta == NULL)
return;
if (len < 24 + 6) {
wpa_printf(MSG_INFO, "Too short Reassociation Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
capab = le_to_host16(mgmt->u.reassoc_resp.capab_info);
status = le_to_host16(mgmt->u.reassoc_resp.status_code);
aid = le_to_host16(mgmt->u.reassoc_resp.aid);
wpa_printf(MSG_DEBUG, "REASSOCRESP " MACSTR " -> " MACSTR
" (capab=0x%x status=%u aid=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
aid & 0x3fff);
if (status)
return;
if ((aid & 0xc000) != 0xc000) {
wpa_printf(MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
"in Reassociation Response from " MACSTR,
MAC2STR(mgmt->sa));
}
sta->aid = aid & 0xc000;
if (sta->state < STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 when "
"getting associated", MAC2STR(sta->addr));
}
if (sta->state < STATE3) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 3 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE3;
}
}
static void rx_mgmt_disassoc(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 2) {
wpa_printf(MSG_INFO, "Too short Disassociation frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "DISASSOC " MACSTR " -> " MACSTR
" (reason=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.disassoc.reason_code));
if (sta->state < STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 or 3 "
"when getting disassociated", MAC2STR(sta->addr));
}
if (sta->state > STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 2 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE2;
}
}
static void rx_mgmt(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_hdr *hdr;
u16 fc, stype;
if (len < 24)
return;
hdr = (const struct ieee80211_hdr *) data;
fc = le_to_host16(hdr->frame_control);
wt->rx_mgmt++;
stype = WLAN_FC_GET_STYPE(fc);
wpa_printf((stype == WLAN_FC_STYPE_BEACON ||
stype == WLAN_FC_STYPE_PROBE_RESP ||
stype == WLAN_FC_STYPE_PROBE_REQ) ?
MSG_EXCESSIVE : MSG_MSGDUMP,
"MGMT %s%s%s DA=" MACSTR " SA=" MACSTR " BSSID=" MACSTR,
mgmt_stype(stype),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
switch (stype) {
case WLAN_FC_STYPE_BEACON:
rx_mgmt_beacon(wt, data, len);
break;
case WLAN_FC_STYPE_PROBE_RESP:
rx_mgmt_probe_resp(wt, data, len);
break;
case WLAN_FC_STYPE_AUTH:
rx_mgmt_auth(wt, data, len);
break;
case WLAN_FC_STYPE_DEAUTH:
rx_mgmt_deauth(wt, data, len);
break;
case WLAN_FC_STYPE_ASSOC_REQ:
rx_mgmt_assoc_req(wt, data, len);
break;
case WLAN_FC_STYPE_ASSOC_RESP:
rx_mgmt_assoc_resp(wt, data, len);
break;
case WLAN_FC_STYPE_REASSOC_REQ:
rx_mgmt_reassoc_req(wt, data, len);
break;
case WLAN_FC_STYPE_REASSOC_RESP:
rx_mgmt_reassoc_resp(wt, data, len);
break;
case WLAN_FC_STYPE_DISASSOC:
rx_mgmt_disassoc(wt, data, len);
break;
}
}
static const char * data_stype(u16 stype)
{
switch (stype) {
case WLAN_FC_STYPE_DATA:
return "DATA";
case WLAN_FC_STYPE_DATA_CFACK:
return "DATA-CFACK";
case WLAN_FC_STYPE_DATA_CFPOLL:
return "DATA-CFPOLL";
case WLAN_FC_STYPE_DATA_CFACKPOLL:
return "DATA-CFACKPOLL";
case WLAN_FC_STYPE_NULLFUNC:
return "NULLFUNC";
case WLAN_FC_STYPE_CFACK:
return "CFACK";
case WLAN_FC_STYPE_CFPOLL:
return "CFPOLL";
case WLAN_FC_STYPE_CFACKPOLL:
return "CFACKPOLL";
case WLAN_FC_STYPE_QOS_DATA:
return "QOSDATA";
case WLAN_FC_STYPE_QOS_DATA_CFACK:
return "QOSDATA-CFACK";
case WLAN_FC_STYPE_QOS_DATA_CFPOLL:
return "QOSDATA-CFPOLL";
case WLAN_FC_STYPE_QOS_DATA_CFACKPOLL:
return "QOSDATA-CFACKPOLL";
case WLAN_FC_STYPE_QOS_NULL:
return "QOS-NULL";
case WLAN_FC_STYPE_QOS_CFPOLL:
return "QOS-CFPOLL";
case WLAN_FC_STYPE_QOS_CFACKPOLL:
return "QOS-CFACKPOLL";
}
return "??";
}
static void rx_data(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_hdr *hdr;
u16 fc;
if (len < 24)
return;
hdr = (const struct ieee80211_hdr *) data;
fc = le_to_host16(hdr->frame_control);
wt->rx_data++;
switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
case 0:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s IBSS DA=" MACSTR " SA="
MACSTR " BSSID=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
break;
case WLAN_FC_FROMDS:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s FromDS DA=" MACSTR
" BSSID=" MACSTR " SA=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
break;
case WLAN_FC_TODS:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s ToDS BSSID=" MACSTR
" SA=" MACSTR " DA=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
break;
case WLAN_FC_TODS | WLAN_FC_FROMDS:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s WDS RA=" MACSTR " TA="
MACSTR " DA=" MACSTR " SA=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3),
MAC2STR((const u8 *) (hdr + 1)));
break;
}
}
static void rx_frame(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_hdr *hdr;

111
wlantest/rx_data.c Normal file
View File

@ -0,0 +1,111 @@
/*
* Received Data frame processing
* Copyright (c) 2010, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "wlantest.h"
static const char * data_stype(u16 stype)
{
switch (stype) {
case WLAN_FC_STYPE_DATA:
return "DATA";
case WLAN_FC_STYPE_DATA_CFACK:
return "DATA-CFACK";
case WLAN_FC_STYPE_DATA_CFPOLL:
return "DATA-CFPOLL";
case WLAN_FC_STYPE_DATA_CFACKPOLL:
return "DATA-CFACKPOLL";
case WLAN_FC_STYPE_NULLFUNC:
return "NULLFUNC";
case WLAN_FC_STYPE_CFACK:
return "CFACK";
case WLAN_FC_STYPE_CFPOLL:
return "CFPOLL";
case WLAN_FC_STYPE_CFACKPOLL:
return "CFACKPOLL";
case WLAN_FC_STYPE_QOS_DATA:
return "QOSDATA";
case WLAN_FC_STYPE_QOS_DATA_CFACK:
return "QOSDATA-CFACK";
case WLAN_FC_STYPE_QOS_DATA_CFPOLL:
return "QOSDATA-CFPOLL";
case WLAN_FC_STYPE_QOS_DATA_CFACKPOLL:
return "QOSDATA-CFACKPOLL";
case WLAN_FC_STYPE_QOS_NULL:
return "QOS-NULL";
case WLAN_FC_STYPE_QOS_CFPOLL:
return "QOS-CFPOLL";
case WLAN_FC_STYPE_QOS_CFACKPOLL:
return "QOS-CFACKPOLL";
}
return "??";
}
void rx_data(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_hdr *hdr;
u16 fc;
if (len < 24)
return;
hdr = (const struct ieee80211_hdr *) data;
fc = le_to_host16(hdr->frame_control);
wt->rx_data++;
switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
case 0:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s IBSS DA=" MACSTR " SA="
MACSTR " BSSID=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
break;
case WLAN_FC_FROMDS:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s FromDS DA=" MACSTR
" BSSID=" MACSTR " SA=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
break;
case WLAN_FC_TODS:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s ToDS BSSID=" MACSTR
" SA=" MACSTR " DA=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
break;
case WLAN_FC_TODS | WLAN_FC_FROMDS:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s WDS RA=" MACSTR " TA="
MACSTR " DA=" MACSTR " SA=" MACSTR,
data_stype(WLAN_FC_GET_STYPE(fc)),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3),
MAC2STR((const u8 *) (hdr + 1)));
break;
}
}

452
wlantest/rx_mgmt.c Normal file
View File

@ -0,0 +1,452 @@
/*
* Received Management frame processing
* Copyright (c) 2010, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "wlantest.h"
static const char * mgmt_stype(u16 stype)
{
switch (stype) {
case WLAN_FC_STYPE_ASSOC_REQ:
return "ASSOC-REQ";
case WLAN_FC_STYPE_ASSOC_RESP:
return "ASSOC-RESP";
case WLAN_FC_STYPE_REASSOC_REQ:
return "REASSOC-REQ";
case WLAN_FC_STYPE_REASSOC_RESP:
return "REASSOC-RESP";
case WLAN_FC_STYPE_PROBE_REQ:
return "PROBE-REQ";
case WLAN_FC_STYPE_PROBE_RESP:
return "PROBE-RESP";
case WLAN_FC_STYPE_BEACON:
return "BEACON";
case WLAN_FC_STYPE_ATIM:
return "ATIM";
case WLAN_FC_STYPE_DISASSOC:
return "DISASSOC";
case WLAN_FC_STYPE_AUTH:
return "AUTH";
case WLAN_FC_STYPE_DEAUTH:
return "DEAUTH";
case WLAN_FC_STYPE_ACTION:
return "ACTION";
}
return "??";
}
static void rx_mgmt_beacon(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct ieee802_11_elems elems;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (bss->proberesp_seen)
return; /* do not override with Beacon data */
bss->capab_info = le_to_host16(mgmt->u.beacon.capab_info);
if (ieee802_11_parse_elems(mgmt->u.beacon.variable,
len - (mgmt->u.beacon.variable - data),
&elems, 0) == ParseFailed) {
if (bss->parse_error_reported)
return;
wpa_printf(MSG_INFO, "Invalid IEs in a Beacon frame from "
MACSTR, MAC2STR(mgmt->sa));
bss->parse_error_reported = 1;
return;
}
bss_update(bss, &elems);
}
static void rx_mgmt_probe_resp(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct ieee802_11_elems elems;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
bss->capab_info = le_to_host16(mgmt->u.probe_resp.capab_info);
if (ieee802_11_parse_elems(mgmt->u.probe_resp.variable,
len - (mgmt->u.probe_resp.variable - data),
&elems, 0) == ParseFailed) {
if (bss->parse_error_reported)
return;
wpa_printf(MSG_INFO, "Invalid IEs in a Probe Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
bss->parse_error_reported = 1;
return;
}
bss_update(bss, &elems);
}
static void rx_mgmt_auth(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 alg, trans, status;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 6) {
wpa_printf(MSG_INFO, "Too short Authentication frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
alg = le_to_host16(mgmt->u.auth.auth_alg);
trans = le_to_host16(mgmt->u.auth.auth_transaction);
status = le_to_host16(mgmt->u.auth.status_code);
wpa_printf(MSG_DEBUG, "AUTH " MACSTR " -> " MACSTR
" (alg=%u trans=%u status=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), alg, trans, status);
if (alg == 0 && trans == 2 && status == 0) {
if (sta->state == STATE1) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 2 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE2;
}
}
}
static void rx_mgmt_deauth(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 2) {
wpa_printf(MSG_INFO, "Too short Deauthentication frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "DEAUTH " MACSTR " -> " MACSTR
" (reason=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.deauth.reason_code));
if (sta->state != STATE1) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 1 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE1;
}
}
static void rx_mgmt_assoc_req(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 4) {
wpa_printf(MSG_INFO, "Too short Association Request frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "ASSOCREQ " MACSTR " -> " MACSTR
" (capab=0x%x listen_int=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.assoc_req.capab_info),
le_to_host16(mgmt->u.assoc_req.listen_interval));
}
static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 capab, status, aid;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->da);
if (sta == NULL)
return;
if (len < 24 + 6) {
wpa_printf(MSG_INFO, "Too short Association Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
capab = le_to_host16(mgmt->u.assoc_resp.capab_info);
status = le_to_host16(mgmt->u.assoc_resp.status_code);
aid = le_to_host16(mgmt->u.assoc_resp.aid);
wpa_printf(MSG_DEBUG, "ASSOCRESP " MACSTR " -> " MACSTR
" (capab=0x%x status=%u aid=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
aid & 0x3fff);
if (status)
return;
if ((aid & 0xc000) != 0xc000) {
wpa_printf(MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
"in Association Response from " MACSTR,
MAC2STR(mgmt->sa));
}
sta->aid = aid & 0xc000;
if (sta->state < STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 when "
"getting associated", MAC2STR(sta->addr));
}
if (sta->state < STATE3) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 3 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE3;
}
}
static void rx_mgmt_reassoc_req(struct wlantest *wt, const u8 *data,
size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 4 + ETH_ALEN) {
wpa_printf(MSG_INFO, "Too short Reassociation Request frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "REASSOCREQ " MACSTR " -> " MACSTR
" (capab=0x%x listen_int=%u current_ap=" MACSTR ")",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.reassoc_req.capab_info),
le_to_host16(mgmt->u.reassoc_req.listen_interval),
MAC2STR(mgmt->u.reassoc_req.current_ap));
}
static void rx_mgmt_reassoc_resp(struct wlantest *wt, const u8 *data,
size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 capab, status, aid;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->da);
if (sta == NULL)
return;
if (len < 24 + 6) {
wpa_printf(MSG_INFO, "Too short Reassociation Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
capab = le_to_host16(mgmt->u.reassoc_resp.capab_info);
status = le_to_host16(mgmt->u.reassoc_resp.status_code);
aid = le_to_host16(mgmt->u.reassoc_resp.aid);
wpa_printf(MSG_DEBUG, "REASSOCRESP " MACSTR " -> " MACSTR
" (capab=0x%x status=%u aid=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
aid & 0x3fff);
if (status)
return;
if ((aid & 0xc000) != 0xc000) {
wpa_printf(MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
"in Reassociation Response from " MACSTR,
MAC2STR(mgmt->sa));
}
sta->aid = aid & 0xc000;
if (sta->state < STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 when "
"getting associated", MAC2STR(sta->addr));
}
if (sta->state < STATE3) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 3 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE3;
}
}
static void rx_mgmt_disassoc(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 2) {
wpa_printf(MSG_INFO, "Too short Disassociation frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "DISASSOC " MACSTR " -> " MACSTR
" (reason=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.disassoc.reason_code));
if (sta->state < STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 or 3 "
"when getting disassociated", MAC2STR(sta->addr));
}
if (sta->state > STATE2) {
wpa_printf(MSG_DEBUG, "STA " MACSTR
" moved to State 2 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE2;
}
}
void rx_mgmt(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_hdr *hdr;
u16 fc, stype;
if (len < 24)
return;
hdr = (const struct ieee80211_hdr *) data;
fc = le_to_host16(hdr->frame_control);
wt->rx_mgmt++;
stype = WLAN_FC_GET_STYPE(fc);
wpa_printf((stype == WLAN_FC_STYPE_BEACON ||
stype == WLAN_FC_STYPE_PROBE_RESP ||
stype == WLAN_FC_STYPE_PROBE_REQ) ?
MSG_EXCESSIVE : MSG_MSGDUMP,
"MGMT %s%s%s DA=" MACSTR " SA=" MACSTR " BSSID=" MACSTR,
mgmt_stype(stype),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
switch (stype) {
case WLAN_FC_STYPE_BEACON:
rx_mgmt_beacon(wt, data, len);
break;
case WLAN_FC_STYPE_PROBE_RESP:
rx_mgmt_probe_resp(wt, data, len);
break;
case WLAN_FC_STYPE_AUTH:
rx_mgmt_auth(wt, data, len);
break;
case WLAN_FC_STYPE_DEAUTH:
rx_mgmt_deauth(wt, data, len);
break;
case WLAN_FC_STYPE_ASSOC_REQ:
rx_mgmt_assoc_req(wt, data, len);
break;
case WLAN_FC_STYPE_ASSOC_RESP:
rx_mgmt_assoc_resp(wt, data, len);
break;
case WLAN_FC_STYPE_REASSOC_REQ:
rx_mgmt_reassoc_req(wt, data, len);
break;
case WLAN_FC_STYPE_REASSOC_RESP:
rx_mgmt_reassoc_resp(wt, data, len);
break;
case WLAN_FC_STYPE_DISASSOC:
rx_mgmt_disassoc(wt, data, len);
break;
}
}

2
wlantest/wlantest.h
View File

@ -60,6 +60,8 @@ void wlantest_process(struct wlantest *wt, const u8 *data, size_t len);
u32 crc32(const u8 *frame, size_t frame_len);
int monitor_init(struct wlantest *wt, const char *ifname);
void monitor_deinit(struct wlantest *wt);
void rx_mgmt(struct wlantest *wt, const u8 *data, size_t len);
void rx_data(struct wlantest *wt, const u8 *data, size_t len);
struct wlantest_bss * bss_get(struct wlantest *wt, const u8 *bssid);
void bss_deinit(struct wlantest_bss *bss);