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Commit | Line | Data |
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2d73f0a8 JM |
1 | /* |
2 | * Received Data frame processing | |
3 | * Copyright (c) 2010, Jouni Malinen <j@w1.fi> | |
4 | * | |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
2d73f0a8 JM |
7 | */ |
8 | ||
9 | #include "utils/includes.h" | |
ee3b84be | 10 | #include <linux/if_ether.h> |
2d73f0a8 JM |
11 | |
12 | #include "utils/common.h" | |
a9dd29d3 | 13 | #include "common/defs.h" |
2d73f0a8 JM |
14 | #include "common/ieee802_11_defs.h" |
15 | #include "wlantest.h" | |
a0530dff | 16 | |
2d73f0a8 JM |
17 | |
18 | static const char * data_stype(u16 stype) | |
19 | { | |
20 | switch (stype) { | |
21 | case WLAN_FC_STYPE_DATA: | |
22 | return "DATA"; | |
23 | case WLAN_FC_STYPE_DATA_CFACK: | |
24 | return "DATA-CFACK"; | |
25 | case WLAN_FC_STYPE_DATA_CFPOLL: | |
26 | return "DATA-CFPOLL"; | |
27 | case WLAN_FC_STYPE_DATA_CFACKPOLL: | |
28 | return "DATA-CFACKPOLL"; | |
29 | case WLAN_FC_STYPE_NULLFUNC: | |
30 | return "NULLFUNC"; | |
31 | case WLAN_FC_STYPE_CFACK: | |
32 | return "CFACK"; | |
33 | case WLAN_FC_STYPE_CFPOLL: | |
34 | return "CFPOLL"; | |
35 | case WLAN_FC_STYPE_CFACKPOLL: | |
36 | return "CFACKPOLL"; | |
37 | case WLAN_FC_STYPE_QOS_DATA: | |
38 | return "QOSDATA"; | |
39 | case WLAN_FC_STYPE_QOS_DATA_CFACK: | |
40 | return "QOSDATA-CFACK"; | |
41 | case WLAN_FC_STYPE_QOS_DATA_CFPOLL: | |
42 | return "QOSDATA-CFPOLL"; | |
43 | case WLAN_FC_STYPE_QOS_DATA_CFACKPOLL: | |
44 | return "QOSDATA-CFACKPOLL"; | |
45 | case WLAN_FC_STYPE_QOS_NULL: | |
46 | return "QOS-NULL"; | |
47 | case WLAN_FC_STYPE_QOS_CFPOLL: | |
48 | return "QOS-CFPOLL"; | |
49 | case WLAN_FC_STYPE_QOS_CFACKPOLL: | |
50 | return "QOS-CFACKPOLL"; | |
51 | } | |
52 | return "??"; | |
53 | } | |
54 | ||
55 | ||
ee3b84be JM |
56 | static void rx_data_eth(struct wlantest *wt, const u8 *bssid, |
57 | const u8 *sta_addr, const u8 *dst, const u8 *src, | |
244c9303 JM |
58 | u16 ethertype, const u8 *data, size_t len, int prot, |
59 | const u8 *peer_addr) | |
32234bba | 60 | { |
ee3b84be JM |
61 | switch (ethertype) { |
62 | case ETH_P_PAE: | |
32234bba | 63 | rx_data_eapol(wt, dst, src, data, len, prot); |
ee3b84be JM |
64 | break; |
65 | case ETH_P_IP: | |
244c9303 JM |
66 | rx_data_ip(wt, bssid, sta_addr, dst, src, data, len, |
67 | peer_addr); | |
ee3b84be | 68 | break; |
b39f5834 JM |
69 | case 0x890d: |
70 | rx_data_80211_encap(wt, bssid, sta_addr, dst, src, data, len); | |
71 | break; | |
ee3b84be | 72 | } |
32234bba JM |
73 | } |
74 | ||
75 | ||
ee3b84be JM |
76 | static void rx_data_process(struct wlantest *wt, const u8 *bssid, |
77 | const u8 *sta_addr, | |
78 | const u8 *dst, const u8 *src, | |
244c9303 JM |
79 | const u8 *data, size_t len, int prot, |
80 | const u8 *peer_addr) | |
32234bba | 81 | { |
4bc82fc7 JM |
82 | if (len == 0) |
83 | return; | |
84 | ||
32234bba | 85 | if (len >= 8 && os_memcmp(data, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) { |
ee3b84be | 86 | rx_data_eth(wt, bssid, sta_addr, dst, src, |
244c9303 JM |
87 | WPA_GET_BE16(data + 6), data + 8, len - 8, prot, |
88 | peer_addr); | |
32234bba JM |
89 | return; |
90 | } | |
91 | ||
4bc82fc7 | 92 | wpa_hexdump(MSG_DEBUG, "Unrecognized LLC", data, len > 8 ? 8 : len); |
32234bba JM |
93 | } |
94 | ||
95 | ||
a0530dff JM |
96 | static u8 * try_all_ptk(struct wlantest *wt, int pairwise_cipher, |
97 | const struct ieee80211_hdr *hdr, | |
98 | const u8 *data, size_t data_len, size_t *decrypted_len) | |
99 | { | |
100 | struct wlantest_ptk *ptk; | |
101 | u8 *decrypted; | |
102 | int prev_level = wpa_debug_level; | |
103 | ||
104 | wpa_debug_level = MSG_WARNING; | |
105 | dl_list_for_each(ptk, &wt->ptk, struct wlantest_ptk, list) { | |
eb2223e0 | 106 | unsigned int tk_len = ptk->ptk_len - 32; |
a0530dff JM |
107 | decrypted = NULL; |
108 | if ((pairwise_cipher == WPA_CIPHER_CCMP || | |
eb2223e0 | 109 | pairwise_cipher == 0) && tk_len == 16) { |
a0530dff JM |
110 | decrypted = ccmp_decrypt(ptk->ptk.tk1, hdr, data, |
111 | data_len, decrypted_len); | |
eb2223e0 AKP |
112 | } else if ((pairwise_cipher == WPA_CIPHER_CCMP_256 || |
113 | pairwise_cipher == 0) && tk_len == 32) { | |
114 | decrypted = ccmp_256_decrypt(ptk->ptk.tk1, hdr, data, | |
115 | data_len, decrypted_len); | |
116 | } else if ((pairwise_cipher == WPA_CIPHER_GCMP || | |
117 | pairwise_cipher == WPA_CIPHER_GCMP_256 || | |
118 | pairwise_cipher == 0) && | |
119 | (tk_len == 16 || tk_len == 32)) { | |
120 | decrypted = gcmp_decrypt(ptk->ptk.tk1, tk_len, hdr, | |
121 | data, data_len, decrypted_len); | |
122 | } else if ((pairwise_cipher == WPA_CIPHER_TKIP || | |
123 | pairwise_cipher == 0) && tk_len == 32) { | |
a0530dff JM |
124 | decrypted = tkip_decrypt(ptk->ptk.tk1, hdr, data, |
125 | data_len, decrypted_len); | |
126 | } | |
127 | if (decrypted) { | |
128 | wpa_debug_level = prev_level; | |
129 | add_note(wt, MSG_DEBUG, "Found PTK match from list of all known PTKs"); | |
130 | return decrypted; | |
131 | } | |
132 | } | |
133 | wpa_debug_level = prev_level; | |
134 | ||
135 | return NULL; | |
136 | } | |
137 | ||
138 | ||
d318c534 JM |
139 | static void rx_data_bss_prot_group(struct wlantest *wt, |
140 | const struct ieee80211_hdr *hdr, | |
141 | const u8 *qos, const u8 *dst, const u8 *src, | |
142 | const u8 *data, size_t len) | |
143 | { | |
144 | struct wlantest_bss *bss; | |
145 | int keyid; | |
eb2223e0 | 146 | u8 *decrypted = NULL; |
07d0a5be | 147 | size_t dlen; |
2edd5c23 | 148 | u8 pn[6]; |
d318c534 JM |
149 | |
150 | bss = bss_get(wt, hdr->addr2); | |
151 | if (bss == NULL) | |
152 | return; | |
153 | if (len < 4) { | |
e4d99217 | 154 | add_note(wt, MSG_INFO, "Too short group addressed data frame"); |
d318c534 JM |
155 | return; |
156 | } | |
157 | ||
20062114 JM |
158 | if (bss->group_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) && |
159 | !(data[3] & 0x20)) { | |
e4d99217 JM |
160 | add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from " |
161 | MACSTR " did not have ExtIV bit set to 1", | |
162 | MAC2STR(bss->bssid)); | |
163 | return; | |
20062114 JM |
164 | } |
165 | ||
16b8b6ea JM |
166 | if (bss->group_cipher == WPA_CIPHER_TKIP) { |
167 | if (data[3] & 0x1f) { | |
e4d99217 JM |
168 | add_note(wt, MSG_INFO, "TKIP frame from " MACSTR |
169 | " used non-zero reserved bit", | |
170 | MAC2STR(bss->bssid)); | |
16b8b6ea JM |
171 | } |
172 | if (data[1] != ((data[0] | 0x20) & 0x7f)) { | |
e4d99217 JM |
173 | add_note(wt, MSG_INFO, "TKIP frame from " MACSTR |
174 | " used incorrect WEPSeed[1] (was 0x%x, " | |
175 | "expected 0x%x)", | |
176 | MAC2STR(bss->bssid), data[1], | |
177 | (data[0] | 0x20) & 0x7f); | |
16b8b6ea JM |
178 | } |
179 | } else if (bss->group_cipher == WPA_CIPHER_CCMP) { | |
180 | if (data[2] != 0 || (data[3] & 0x1f) != 0) { | |
e4d99217 JM |
181 | add_note(wt, MSG_INFO, "CCMP frame from " MACSTR |
182 | " used non-zero reserved bit", | |
183 | MAC2STR(bss->bssid)); | |
16b8b6ea JM |
184 | } |
185 | } | |
186 | ||
d318c534 | 187 | keyid = data[3] >> 6; |
2e479416 JM |
188 | if (bss->gtk_len[keyid] == 0 && bss->group_cipher != WPA_CIPHER_WEP40) |
189 | { | |
e4d99217 JM |
190 | add_note(wt, MSG_MSGDUMP, "No GTK known to decrypt the frame " |
191 | "(A2=" MACSTR " KeyID=%d)", | |
192 | MAC2STR(hdr->addr2), keyid); | |
d318c534 JM |
193 | return; |
194 | } | |
195 | ||
4dac8453 JM |
196 | if (bss->group_cipher == WPA_CIPHER_TKIP) |
197 | tkip_get_pn(pn, data); | |
2e479416 JM |
198 | else if (bss->group_cipher == WPA_CIPHER_WEP40) |
199 | goto skip_replay_det; | |
4dac8453 JM |
200 | else |
201 | ccmp_get_pn(pn, data); | |
2edd5c23 | 202 | if (os_memcmp(pn, bss->rsc[keyid], 6) <= 0) { |
01b397dd | 203 | u16 seq_ctrl = le_to_host16(hdr->seq_ctrl); |
e4d99217 | 204 | add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR |
3a3cb8ee | 205 | " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u%s", |
e4d99217 JM |
206 | MAC2STR(hdr->addr1), MAC2STR(hdr->addr2), |
207 | MAC2STR(hdr->addr3), | |
208 | WLAN_GET_SEQ_SEQ(seq_ctrl), | |
3a3cb8ee AKP |
209 | WLAN_GET_SEQ_FRAG(seq_ctrl), |
210 | (le_to_host16(hdr->frame_control) & WLAN_FC_RETRY) ? | |
211 | " Retry" : ""); | |
2edd5c23 JM |
212 | wpa_hexdump(MSG_INFO, "RX PN", pn, 6); |
213 | wpa_hexdump(MSG_INFO, "RSC", bss->rsc[keyid], 6); | |
214 | } | |
215 | ||
2e479416 | 216 | skip_replay_det: |
2924b0eb JM |
217 | if (bss->group_cipher == WPA_CIPHER_TKIP) |
218 | decrypted = tkip_decrypt(bss->gtk[keyid], hdr, data, len, | |
219 | &dlen); | |
2e479416 JM |
220 | else if (bss->group_cipher == WPA_CIPHER_WEP40) |
221 | decrypted = wep_decrypt(wt, hdr, data, len, &dlen); | |
eb2223e0 | 222 | else if (bss->group_cipher == WPA_CIPHER_CCMP) |
2924b0eb JM |
223 | decrypted = ccmp_decrypt(bss->gtk[keyid], hdr, data, len, |
224 | &dlen); | |
eb2223e0 AKP |
225 | else if (bss->group_cipher == WPA_CIPHER_CCMP_256) |
226 | decrypted = ccmp_256_decrypt(bss->gtk[keyid], hdr, data, len, | |
227 | &dlen); | |
228 | else if (bss->group_cipher == WPA_CIPHER_GCMP || | |
229 | bss->group_cipher == WPA_CIPHER_GCMP_256) | |
230 | decrypted = gcmp_decrypt(bss->gtk[keyid], bss->gtk_len[keyid], | |
231 | hdr, data, len, &dlen); | |
232 | ||
2edd5c23 | 233 | if (decrypted) { |
ee3b84be | 234 | rx_data_process(wt, bss->bssid, NULL, dst, src, decrypted, |
244c9303 | 235 | dlen, 1, NULL); |
2edd5c23 | 236 | os_memcpy(bss->rsc[keyid], pn, 6); |
64f45d07 JM |
237 | write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0), |
238 | decrypted, dlen); | |
e4d99217 JM |
239 | } else |
240 | add_note(wt, MSG_DEBUG, "Failed to decrypt frame"); | |
07d0a5be | 241 | os_free(decrypted); |
d318c534 JM |
242 | } |
243 | ||
244 | ||
32234bba JM |
245 | static void rx_data_bss_prot(struct wlantest *wt, |
246 | const struct ieee80211_hdr *hdr, const u8 *qos, | |
247 | const u8 *dst, const u8 *src, const u8 *data, | |
248 | size_t len) | |
249 | { | |
d318c534 | 250 | struct wlantest_bss *bss; |
b39f5834 | 251 | struct wlantest_sta *sta, *sta2; |
d318c534 JM |
252 | int keyid; |
253 | u16 fc = le_to_host16(hdr->frame_control); | |
254 | u8 *decrypted; | |
255 | size_t dlen; | |
2edd5c23 JM |
256 | int tid; |
257 | u8 pn[6], *rsc; | |
ace4e460 | 258 | struct wlantest_tdls *tdls = NULL, *found; |
b39f5834 | 259 | const u8 *tk = NULL; |
a0530dff JM |
260 | int ptk_iter_done = 0; |
261 | int try_ptk_iter = 0; | |
d318c534 JM |
262 | |
263 | if (hdr->addr1[0] & 0x01) { | |
264 | rx_data_bss_prot_group(wt, hdr, qos, dst, src, data, len); | |
265 | return; | |
266 | } | |
267 | ||
268 | if (fc & WLAN_FC_TODS) { | |
269 | bss = bss_get(wt, hdr->addr1); | |
270 | if (bss == NULL) | |
271 | return; | |
272 | sta = sta_get(bss, hdr->addr2); | |
0a9ddd92 JM |
273 | if (sta) |
274 | sta->counters[WLANTEST_STA_COUNTER_PROT_DATA_TX]++; | |
b39f5834 | 275 | } else if (fc & WLAN_FC_FROMDS) { |
d318c534 JM |
276 | bss = bss_get(wt, hdr->addr2); |
277 | if (bss == NULL) | |
278 | return; | |
279 | sta = sta_get(bss, hdr->addr1); | |
b39f5834 JM |
280 | } else { |
281 | bss = bss_get(wt, hdr->addr3); | |
282 | if (bss == NULL) | |
283 | return; | |
284 | sta = sta_find(bss, hdr->addr2); | |
285 | sta2 = sta_find(bss, hdr->addr1); | |
286 | if (sta == NULL || sta2 == NULL) | |
287 | return; | |
ace4e460 | 288 | found = NULL; |
b39f5834 JM |
289 | dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) |
290 | { | |
291 | if ((tdls->init == sta && tdls->resp == sta2) || | |
292 | (tdls->init == sta2 && tdls->resp == sta)) { | |
ace4e460 JM |
293 | found = tdls; |
294 | if (tdls->link_up) | |
295 | break; | |
b39f5834 JM |
296 | } |
297 | } | |
ace4e460 JM |
298 | if (found) { |
299 | if (!found->link_up) | |
300 | add_note(wt, MSG_DEBUG, | |
301 | "TDLS: Link not up, but Data " | |
302 | "frame seen"); | |
303 | tk = found->tpk.tk; | |
304 | tdls = found; | |
305 | } | |
d318c534 | 306 | } |
2e479416 JM |
307 | if ((sta == NULL || |
308 | (!sta->ptk_set && sta->pairwise_cipher != WPA_CIPHER_WEP40)) && | |
309 | tk == NULL) { | |
e4d99217 | 310 | add_note(wt, MSG_MSGDUMP, "No PTK known to decrypt the frame"); |
a0530dff JM |
311 | if (dl_list_empty(&wt->ptk)) |
312 | return; | |
313 | try_ptk_iter = 1; | |
d318c534 JM |
314 | } |
315 | ||
316 | if (len < 4) { | |
e4d99217 | 317 | add_note(wt, MSG_INFO, "Too short encrypted data frame"); |
d318c534 JM |
318 | return; |
319 | } | |
320 | ||
99d7c1de JM |
321 | if (sta == NULL) |
322 | return; | |
20062114 JM |
323 | if (sta->pairwise_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) && |
324 | !(data[3] & 0x20)) { | |
e4d99217 JM |
325 | add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from " |
326 | MACSTR " did not have ExtIV bit set to 1", | |
327 | MAC2STR(src)); | |
328 | return; | |
20062114 JM |
329 | } |
330 | ||
b39f5834 | 331 | if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP) { |
16b8b6ea | 332 | if (data[3] & 0x1f) { |
e4d99217 JM |
333 | add_note(wt, MSG_INFO, "TKIP frame from " MACSTR |
334 | " used non-zero reserved bit", | |
335 | MAC2STR(hdr->addr2)); | |
16b8b6ea JM |
336 | } |
337 | if (data[1] != ((data[0] | 0x20) & 0x7f)) { | |
e4d99217 JM |
338 | add_note(wt, MSG_INFO, "TKIP frame from " MACSTR |
339 | " used incorrect WEPSeed[1] (was 0x%x, " | |
340 | "expected 0x%x)", | |
341 | MAC2STR(hdr->addr2), data[1], | |
342 | (data[0] | 0x20) & 0x7f); | |
16b8b6ea | 343 | } |
b39f5834 | 344 | } else if (tk || sta->pairwise_cipher == WPA_CIPHER_CCMP) { |
16b8b6ea | 345 | if (data[2] != 0 || (data[3] & 0x1f) != 0) { |
e4d99217 JM |
346 | add_note(wt, MSG_INFO, "CCMP frame from " MACSTR |
347 | " used non-zero reserved bit", | |
348 | MAC2STR(hdr->addr2)); | |
16b8b6ea JM |
349 | } |
350 | } | |
351 | ||
d318c534 JM |
352 | keyid = data[3] >> 6; |
353 | if (keyid != 0) { | |
e4d99217 JM |
354 | add_note(wt, MSG_INFO, "Unexpected non-zero KeyID %d in " |
355 | "individually addressed Data frame from " MACSTR, | |
356 | keyid, MAC2STR(hdr->addr2)); | |
d318c534 JM |
357 | } |
358 | ||
99d7c1de | 359 | if (qos) { |
2edd5c23 | 360 | tid = qos[0] & 0x0f; |
99d7c1de JM |
361 | if (fc & WLAN_FC_TODS) |
362 | sta->tx_tid[tid]++; | |
363 | else | |
364 | sta->rx_tid[tid]++; | |
365 | } else { | |
2edd5c23 | 366 | tid = 0; |
99d7c1de JM |
367 | if (fc & WLAN_FC_TODS) |
368 | sta->tx_tid[16]++; | |
369 | else | |
370 | sta->rx_tid[16]++; | |
371 | } | |
b39f5834 JM |
372 | if (tk) { |
373 | if (os_memcmp(hdr->addr2, tdls->init->addr, ETH_ALEN) == 0) | |
374 | rsc = tdls->rsc_init[tid]; | |
375 | else | |
376 | rsc = tdls->rsc_resp[tid]; | |
377 | } else if (fc & WLAN_FC_TODS) | |
2edd5c23 JM |
378 | rsc = sta->rsc_tods[tid]; |
379 | else | |
380 | rsc = sta->rsc_fromds[tid]; | |
381 | ||
382 | ||
b39f5834 | 383 | if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP) |
4dac8453 | 384 | tkip_get_pn(pn, data); |
2e479416 JM |
385 | else if (sta->pairwise_cipher == WPA_CIPHER_WEP40) |
386 | goto skip_replay_det; | |
4dac8453 JM |
387 | else |
388 | ccmp_get_pn(pn, data); | |
2edd5c23 | 389 | if (os_memcmp(pn, rsc, 6) <= 0) { |
01b397dd | 390 | u16 seq_ctrl = le_to_host16(hdr->seq_ctrl); |
e4d99217 | 391 | add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR |
3a3cb8ee | 392 | " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u%s", |
e4d99217 JM |
393 | MAC2STR(hdr->addr1), MAC2STR(hdr->addr2), |
394 | MAC2STR(hdr->addr3), | |
395 | WLAN_GET_SEQ_SEQ(seq_ctrl), | |
3a3cb8ee AKP |
396 | WLAN_GET_SEQ_FRAG(seq_ctrl), |
397 | (le_to_host16(hdr->frame_control) & WLAN_FC_RETRY) ? | |
398 | " Retry" : ""); | |
2edd5c23 JM |
399 | wpa_hexdump(MSG_INFO, "RX PN", pn, 6); |
400 | wpa_hexdump(MSG_INFO, "RSC", rsc, 6); | |
401 | } | |
402 | ||
2e479416 | 403 | skip_replay_det: |
eb2223e0 AKP |
404 | if (tk) { |
405 | if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256) | |
406 | decrypted = ccmp_256_decrypt(tk, hdr, data, len, &dlen); | |
407 | else if (sta->pairwise_cipher == WPA_CIPHER_GCMP || | |
408 | sta->pairwise_cipher == WPA_CIPHER_GCMP_256) | |
409 | decrypted = gcmp_decrypt(tk, sta->tk_len, hdr, data, | |
410 | len, &dlen); | |
411 | else | |
412 | decrypted = ccmp_decrypt(tk, hdr, data, len, &dlen); | |
413 | } else if (sta->pairwise_cipher == WPA_CIPHER_TKIP) { | |
2924b0eb | 414 | decrypted = tkip_decrypt(sta->ptk.tk1, hdr, data, len, &dlen); |
eb2223e0 | 415 | } else if (sta->pairwise_cipher == WPA_CIPHER_WEP40) { |
2e479416 | 416 | decrypted = wep_decrypt(wt, hdr, data, len, &dlen); |
eb2223e0 AKP |
417 | } else if (sta->ptk_set) { |
418 | if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256) | |
419 | decrypted = ccmp_256_decrypt(sta->ptk.tk1, hdr, data, | |
420 | len, &dlen); | |
421 | else if (sta->pairwise_cipher == WPA_CIPHER_GCMP || | |
422 | sta->pairwise_cipher == WPA_CIPHER_GCMP_256) | |
423 | decrypted = gcmp_decrypt(sta->ptk.tk1, sta->tk_len, | |
424 | hdr, data, len, &dlen); | |
425 | else | |
426 | decrypted = ccmp_decrypt(sta->ptk.tk1, hdr, data, len, | |
427 | &dlen); | |
428 | } else { | |
a0530dff JM |
429 | decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data, |
430 | len, &dlen); | |
431 | ptk_iter_done = 1; | |
432 | } | |
433 | if (!decrypted && !ptk_iter_done) { | |
434 | decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data, | |
435 | len, &dlen); | |
436 | if (decrypted) { | |
437 | add_note(wt, MSG_DEBUG, "Current PTK did not work, but found a match from all known PTKs"); | |
438 | } | |
439 | } | |
2edd5c23 | 440 | if (decrypted) { |
244c9303 | 441 | u16 fc = le_to_host16(hdr->frame_control); |
9559a7f8 | 442 | const u8 *peer_addr = NULL; |
244c9303 JM |
443 | if (!(fc & (WLAN_FC_FROMDS | WLAN_FC_TODS))) |
444 | peer_addr = hdr->addr1; | |
d0b251d2 | 445 | os_memcpy(rsc, pn, 6); |
ee3b84be | 446 | rx_data_process(wt, bss->bssid, sta->addr, dst, src, decrypted, |
244c9303 | 447 | dlen, 1, peer_addr); |
64f45d07 JM |
448 | write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0), |
449 | decrypted, dlen); | |
a0530dff | 450 | } else if (!try_ptk_iter) |
e4d99217 | 451 | add_note(wt, MSG_DEBUG, "Failed to decrypt frame"); |
d318c534 | 452 | os_free(decrypted); |
32234bba JM |
453 | } |
454 | ||
455 | ||
456 | static void rx_data_bss(struct wlantest *wt, const struct ieee80211_hdr *hdr, | |
457 | const u8 *qos, const u8 *dst, const u8 *src, | |
458 | const u8 *data, size_t len) | |
459 | { | |
460 | u16 fc = le_to_host16(hdr->frame_control); | |
461 | int prot = !!(fc & WLAN_FC_ISWEP); | |
462 | ||
463 | if (qos) { | |
464 | u8 ack = (qos[0] & 0x60) >> 5; | |
465 | wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR | |
466 | " len=%u%s tid=%u%s%s", | |
467 | MAC2STR(src), MAC2STR(dst), (unsigned int) len, | |
468 | prot ? " Prot" : "", qos[0] & 0x0f, | |
469 | (qos[0] & 0x10) ? " EOSP" : "", | |
470 | ack == 0 ? "" : | |
471 | (ack == 1 ? " NoAck" : | |
472 | (ack == 2 ? " NoExpAck" : " BA"))); | |
473 | } else { | |
474 | wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR | |
475 | " len=%u%s", | |
476 | MAC2STR(src), MAC2STR(dst), (unsigned int) len, | |
477 | prot ? " Prot" : ""); | |
478 | } | |
479 | ||
480 | if (prot) | |
481 | rx_data_bss_prot(wt, hdr, qos, dst, src, data, len); | |
ee3b84be | 482 | else { |
244c9303 | 483 | const u8 *bssid, *sta_addr, *peer_addr; |
99d7c1de JM |
484 | struct wlantest_bss *bss; |
485 | ||
ee3b84be JM |
486 | if (fc & WLAN_FC_TODS) { |
487 | bssid = hdr->addr1; | |
488 | sta_addr = hdr->addr2; | |
244c9303 JM |
489 | peer_addr = NULL; |
490 | } else if (fc & WLAN_FC_FROMDS) { | |
ee3b84be JM |
491 | bssid = hdr->addr2; |
492 | sta_addr = hdr->addr1; | |
244c9303 JM |
493 | peer_addr = NULL; |
494 | } else { | |
495 | bssid = hdr->addr3; | |
496 | sta_addr = hdr->addr2; | |
497 | peer_addr = hdr->addr1; | |
ee3b84be | 498 | } |
99d7c1de JM |
499 | |
500 | bss = bss_get(wt, bssid); | |
501 | if (bss) { | |
502 | struct wlantest_sta *sta = sta_get(bss, sta_addr); | |
503 | ||
504 | if (sta) { | |
505 | if (qos) { | |
506 | int tid = qos[0] & 0x0f; | |
507 | if (fc & WLAN_FC_TODS) | |
508 | sta->tx_tid[tid]++; | |
509 | else | |
510 | sta->rx_tid[tid]++; | |
511 | } else { | |
512 | if (fc & WLAN_FC_TODS) | |
513 | sta->tx_tid[16]++; | |
514 | else | |
515 | sta->rx_tid[16]++; | |
516 | } | |
517 | } | |
518 | } | |
519 | ||
244c9303 JM |
520 | rx_data_process(wt, bssid, sta_addr, dst, src, data, len, 0, |
521 | peer_addr); | |
ee3b84be | 522 | } |
32234bba JM |
523 | } |
524 | ||
525 | ||
0e42fff3 JM |
526 | static struct wlantest_tdls * get_tdls(struct wlantest *wt, const u8 *bssid, |
527 | const u8 *sta1_addr, | |
528 | const u8 *sta2_addr) | |
529 | { | |
530 | struct wlantest_bss *bss; | |
531 | struct wlantest_sta *sta1, *sta2; | |
ace4e460 | 532 | struct wlantest_tdls *tdls, *found = NULL; |
0e42fff3 JM |
533 | |
534 | bss = bss_find(wt, bssid); | |
535 | if (bss == NULL) | |
536 | return NULL; | |
537 | sta1 = sta_find(bss, sta1_addr); | |
538 | if (sta1 == NULL) | |
539 | return NULL; | |
540 | sta2 = sta_find(bss, sta2_addr); | |
541 | if (sta2 == NULL) | |
542 | return NULL; | |
543 | ||
544 | dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) { | |
545 | if ((tdls->init == sta1 && tdls->resp == sta2) || | |
ace4e460 JM |
546 | (tdls->init == sta2 && tdls->resp == sta1)) { |
547 | found = tdls; | |
548 | if (tdls->link_up) | |
549 | break; | |
550 | } | |
0e42fff3 JM |
551 | } |
552 | ||
ace4e460 | 553 | return found; |
0e42fff3 JM |
554 | } |
555 | ||
556 | ||
557 | static void add_direct_link(struct wlantest *wt, const u8 *bssid, | |
558 | const u8 *sta1_addr, const u8 *sta2_addr) | |
559 | { | |
560 | struct wlantest_tdls *tdls; | |
561 | ||
562 | tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr); | |
563 | if (tdls == NULL) | |
564 | return; | |
565 | ||
566 | if (tdls->link_up) | |
567 | tdls->counters[WLANTEST_TDLS_COUNTER_VALID_DIRECT_LINK]++; | |
568 | else | |
569 | tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_DIRECT_LINK]++; | |
570 | } | |
571 | ||
572 | ||
573 | static void add_ap_path(struct wlantest *wt, const u8 *bssid, | |
574 | const u8 *sta1_addr, const u8 *sta2_addr) | |
575 | { | |
576 | struct wlantest_tdls *tdls; | |
577 | ||
578 | tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr); | |
579 | if (tdls == NULL) | |
580 | return; | |
581 | ||
582 | if (tdls->link_up) | |
583 | tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_AP_PATH]++; | |
584 | else | |
585 | tdls->counters[WLANTEST_TDLS_COUNTER_VALID_AP_PATH]++; | |
586 | } | |
587 | ||
588 | ||
2d73f0a8 JM |
589 | void rx_data(struct wlantest *wt, const u8 *data, size_t len) |
590 | { | |
591 | const struct ieee80211_hdr *hdr; | |
32234bba JM |
592 | u16 fc, stype; |
593 | size_t hdrlen; | |
594 | const u8 *qos = NULL; | |
2d73f0a8 JM |
595 | |
596 | if (len < 24) | |
597 | return; | |
598 | ||
599 | hdr = (const struct ieee80211_hdr *) data; | |
600 | fc = le_to_host16(hdr->frame_control); | |
32234bba JM |
601 | stype = WLAN_FC_GET_STYPE(fc); |
602 | hdrlen = 24; | |
603 | if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) == | |
604 | (WLAN_FC_TODS | WLAN_FC_FROMDS)) | |
605 | hdrlen += ETH_ALEN; | |
606 | if (stype & 0x08) { | |
607 | qos = data + hdrlen; | |
608 | hdrlen += 2; | |
609 | } | |
610 | if (len < hdrlen) | |
611 | return; | |
2d73f0a8 JM |
612 | wt->rx_data++; |
613 | ||
614 | switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) { | |
615 | case 0: | |
616 | wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s IBSS DA=" MACSTR " SA=" | |
617 | MACSTR " BSSID=" MACSTR, | |
618 | data_stype(WLAN_FC_GET_STYPE(fc)), | |
619 | fc & WLAN_FC_PWRMGT ? " PwrMgt" : "", | |
620 | fc & WLAN_FC_ISWEP ? " Prot" : "", | |
621 | MAC2STR(hdr->addr1), MAC2STR(hdr->addr2), | |
622 | MAC2STR(hdr->addr3)); | |
0e42fff3 | 623 | add_direct_link(wt, hdr->addr3, hdr->addr1, hdr->addr2); |
b39f5834 JM |
624 | rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr2, |
625 | data + hdrlen, len - hdrlen); | |
2d73f0a8 JM |
626 | break; |
627 | case WLAN_FC_FROMDS: | |
628 | wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s FromDS DA=" MACSTR | |
629 | " BSSID=" MACSTR " SA=" MACSTR, | |
630 | data_stype(WLAN_FC_GET_STYPE(fc)), | |
631 | fc & WLAN_FC_PWRMGT ? " PwrMgt" : "", | |
632 | fc & WLAN_FC_ISWEP ? " Prot" : "", | |
633 | MAC2STR(hdr->addr1), MAC2STR(hdr->addr2), | |
634 | MAC2STR(hdr->addr3)); | |
0e42fff3 | 635 | add_ap_path(wt, hdr->addr2, hdr->addr1, hdr->addr3); |
39c14726 | 636 | rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr3, |
32234bba | 637 | data + hdrlen, len - hdrlen); |
2d73f0a8 JM |
638 | break; |
639 | case WLAN_FC_TODS: | |
640 | wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s ToDS BSSID=" MACSTR | |
641 | " SA=" MACSTR " DA=" MACSTR, | |
642 | data_stype(WLAN_FC_GET_STYPE(fc)), | |
643 | fc & WLAN_FC_PWRMGT ? " PwrMgt" : "", | |
644 | fc & WLAN_FC_ISWEP ? " Prot" : "", | |
645 | MAC2STR(hdr->addr1), MAC2STR(hdr->addr2), | |
646 | MAC2STR(hdr->addr3)); | |
0e42fff3 | 647 | add_ap_path(wt, hdr->addr1, hdr->addr3, hdr->addr2); |
32234bba JM |
648 | rx_data_bss(wt, hdr, qos, hdr->addr3, hdr->addr2, |
649 | data + hdrlen, len - hdrlen); | |
2d73f0a8 JM |
650 | break; |
651 | case WLAN_FC_TODS | WLAN_FC_FROMDS: | |
652 | wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s WDS RA=" MACSTR " TA=" | |
653 | MACSTR " DA=" MACSTR " SA=" MACSTR, | |
654 | data_stype(WLAN_FC_GET_STYPE(fc)), | |
655 | fc & WLAN_FC_PWRMGT ? " PwrMgt" : "", | |
656 | fc & WLAN_FC_ISWEP ? " Prot" : "", | |
657 | MAC2STR(hdr->addr1), MAC2STR(hdr->addr2), | |
658 | MAC2STR(hdr->addr3), | |
659 | MAC2STR((const u8 *) (hdr + 1))); | |
660 | break; | |
661 | } | |
662 | } |