2 Unix SMB/CIFS implementation.
4 Winbind status program.
6 Copyright (C) Tim Potter 2000-2003
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
8 Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "utils/ntlm_auth.h"
28 #define DBGC_CLASS DBGC_WINBIND
39 Authenticate a user with a challenge/response, checking session key
40 and valid authentication types
44 * Test the normal 'LM and NTLM' combination
47 static bool test_lm_ntlm_broken(enum ntlm_break break_which)
52 DATA_BLOB lm_response = data_blob(NULL, 24);
53 DATA_BLOB nt_response = data_blob(NULL, 24);
54 DATA_BLOB session_key = data_blob(NULL, 16);
57 uchar user_session_key[16];
60 DATA_BLOB chall = get_challenge();
64 ZERO_STRUCT(user_session_key);
66 flags |= WBFLAG_PAM_LMKEY;
67 flags |= WBFLAG_PAM_USER_SESSION_KEY;
69 SMBencrypt(opt_password,chall.data,lm_response.data);
70 E_deshash(opt_password, lm_hash);
72 SMBNTencrypt(opt_password,chall.data,nt_response.data);
74 E_md4hash(opt_password, nt_hash);
75 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
77 switch (break_which) {
81 lm_response.data[0]++;
84 nt_response.data[0]++;
87 data_blob_free(&lm_response);
90 data_blob_free(&nt_response);
94 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
102 &error_string, NULL);
104 data_blob_free(&lm_response);
106 if (!NT_STATUS_IS_OK(nt_status)) {
107 d_printf("%s (0x%x)\n",
109 NT_STATUS_V(nt_status));
110 SAFE_FREE(error_string);
111 return break_which == BREAK_NT;
114 if (memcmp(lm_hash, lm_key,
115 sizeof(lm_key)) != 0) {
116 DEBUG(1, ("LM Key does not match expectations!\n"));
117 DEBUG(1, ("lm_key:\n"));
118 dump_data(1, lm_key, 8);
119 DEBUG(1, ("expected:\n"));
120 dump_data(1, lm_hash, 8);
124 if (break_which == NO_NT) {
125 if (memcmp(lm_hash, user_session_key,
127 DEBUG(1, ("NT Session Key does not match expectations (should be LM hash)!\n"));
128 DEBUG(1, ("user_session_key:\n"));
129 dump_data(1, user_session_key, sizeof(user_session_key));
130 DEBUG(1, ("expected:\n"));
131 dump_data(1, lm_hash, sizeof(lm_hash));
135 if (memcmp(session_key.data, user_session_key,
136 sizeof(user_session_key)) != 0) {
137 DEBUG(1, ("NT Session Key does not match expectations!\n"));
138 DEBUG(1, ("user_session_key:\n"));
139 dump_data(1, user_session_key, 16);
140 DEBUG(1, ("expected:\n"));
141 dump_data(1, session_key.data, session_key.length);
149 * Test LM authentication, no NT response supplied
152 static bool test_lm(void)
155 return test_lm_ntlm_broken(NO_NT);
159 * Test the NTLM response only, no LM.
162 static bool test_ntlm(void)
164 return test_lm_ntlm_broken(NO_LM);
168 * Test the NTLM response only, but in the LM field.
171 static bool test_ntlm_in_lm(void)
176 DATA_BLOB nt_response = data_blob(NULL, 24);
180 uchar user_session_key[16];
181 DATA_BLOB chall = get_challenge();
184 ZERO_STRUCT(user_session_key);
186 flags |= WBFLAG_PAM_LMKEY;
187 flags |= WBFLAG_PAM_USER_SESSION_KEY;
189 SMBNTencrypt(opt_password,chall.data,nt_response.data);
191 E_deshash(opt_password, lm_hash);
193 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
201 &error_string, NULL);
203 data_blob_free(&nt_response);
205 if (!NT_STATUS_IS_OK(nt_status)) {
206 d_printf("%s (0x%x)\n",
208 NT_STATUS_V(nt_status));
209 SAFE_FREE(error_string);
213 if (memcmp(lm_hash, lm_key,
214 sizeof(lm_key)) != 0) {
215 DEBUG(1, ("LM Key does not match expectations!\n"));
216 DEBUG(1, ("lm_key:\n"));
217 dump_data(1, lm_key, 8);
218 DEBUG(1, ("expected:\n"));
219 dump_data(1, lm_hash, 8);
222 if (memcmp(lm_hash, user_session_key, 8) != 0) {
223 DEBUG(1, ("Session Key (first 8 lm hash) does not match expectations!\n"));
224 DEBUG(1, ("user_session_key:\n"));
225 dump_data(1, user_session_key, 16);
226 DEBUG(1, ("expected:\n"));
227 dump_data(1, lm_hash, 8);
234 * Test the NTLM response only, but in the both the NT and LM fields.
237 static bool test_ntlm_in_both(void)
242 DATA_BLOB nt_response = data_blob(NULL, 24);
243 DATA_BLOB session_key = data_blob(NULL, 16);
247 uint8 user_session_key[16];
249 DATA_BLOB chall = get_challenge();
253 ZERO_STRUCT(user_session_key);
255 flags |= WBFLAG_PAM_LMKEY;
256 flags |= WBFLAG_PAM_USER_SESSION_KEY;
258 SMBNTencrypt(opt_password,chall.data,nt_response.data);
259 E_md4hash(opt_password, nt_hash);
260 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
262 E_deshash(opt_password, lm_hash);
264 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
272 &error_string, NULL);
274 data_blob_free(&nt_response);
276 if (!NT_STATUS_IS_OK(nt_status)) {
277 d_printf("%s (0x%x)\n",
279 NT_STATUS_V(nt_status));
280 SAFE_FREE(error_string);
284 if (memcmp(lm_hash, lm_key,
285 sizeof(lm_key)) != 0) {
286 DEBUG(1, ("LM Key does not match expectations!\n"));
287 DEBUG(1, ("lm_key:\n"));
288 dump_data(1, lm_key, 8);
289 DEBUG(1, ("expected:\n"));
290 dump_data(1, lm_hash, 8);
293 if (memcmp(session_key.data, user_session_key,
294 sizeof(user_session_key)) != 0) {
295 DEBUG(1, ("NT Session Key does not match expectations!\n"));
296 DEBUG(1, ("user_session_key:\n"));
297 dump_data(1, user_session_key, 16);
298 DEBUG(1, ("expected:\n"));
299 dump_data(1, session_key.data, session_key.length);
308 * Test the NTLMv2 and LMv2 responses
311 static bool test_lmv2_ntlmv2_broken(enum ntlm_break break_which)
316 DATA_BLOB ntlmv2_response = data_blob_null;
317 DATA_BLOB lmv2_response = data_blob_null;
318 DATA_BLOB ntlmv2_session_key = data_blob_null;
319 DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain());
321 uchar user_session_key[16];
322 DATA_BLOB chall = get_challenge();
325 ZERO_STRUCT(user_session_key);
327 flags |= WBFLAG_PAM_USER_SESSION_KEY;
329 if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
331 &lmv2_response, &ntlmv2_response,
332 &ntlmv2_session_key)) {
333 data_blob_free(&names_blob);
336 data_blob_free(&names_blob);
338 switch (break_which) {
342 lmv2_response.data[0]++;
345 ntlmv2_response.data[0]++;
348 data_blob_free(&lmv2_response);
351 data_blob_free(&ntlmv2_response);
355 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
363 &error_string, NULL);
365 data_blob_free(&lmv2_response);
366 data_blob_free(&ntlmv2_response);
368 if (!NT_STATUS_IS_OK(nt_status)) {
369 d_printf("%s (0x%x)\n",
371 NT_STATUS_V(nt_status));
372 SAFE_FREE(error_string);
373 return break_which == BREAK_NT;
376 if (break_which != NO_NT && break_which != BREAK_NT && memcmp(ntlmv2_session_key.data, user_session_key,
377 sizeof(user_session_key)) != 0) {
378 DEBUG(1, ("USER (NTLMv2) Session Key does not match expectations!\n"));
379 DEBUG(1, ("user_session_key:\n"));
380 dump_data(1, user_session_key, 16);
381 DEBUG(1, ("expected:\n"));
382 dump_data(1, ntlmv2_session_key.data, ntlmv2_session_key.length);
389 * Test the NTLMv2 and LMv2 responses
392 static bool test_lmv2_ntlmv2(void)
394 return test_lmv2_ntlmv2_broken(BREAK_NONE);
398 * Test the LMv2 response only
401 static bool test_lmv2(void)
403 return test_lmv2_ntlmv2_broken(NO_NT);
407 * Test the NTLMv2 response only
410 static bool test_ntlmv2(void)
412 return test_lmv2_ntlmv2_broken(NO_LM);
415 static bool test_lm_ntlm(void)
417 return test_lm_ntlm_broken(BREAK_NONE);
420 static bool test_ntlm_lm_broken(void)
422 return test_lm_ntlm_broken(BREAK_LM);
425 static bool test_ntlm_ntlm_broken(void)
427 return test_lm_ntlm_broken(BREAK_NT);
430 static bool test_ntlmv2_lmv2_broken(void)
432 return test_lmv2_ntlmv2_broken(BREAK_LM);
435 static bool test_ntlmv2_ntlmv2_broken(void)
437 return test_lmv2_ntlmv2_broken(BREAK_NT);
440 static bool test_plaintext(enum ntlm_break break_which)
444 DATA_BLOB nt_response = data_blob_null;
445 DATA_BLOB lm_response = data_blob_null;
447 smb_ucs2_t *nt_response_ucs2;
449 uchar user_session_key[16];
451 static const uchar zeros[8] = { 0, };
452 DATA_BLOB chall = data_blob(zeros, sizeof(zeros));
455 ZERO_STRUCT(user_session_key);
457 flags |= WBFLAG_PAM_LMKEY;
458 flags |= WBFLAG_PAM_USER_SESSION_KEY;
460 if ((push_ucs2_allocate(&nt_response_ucs2, opt_password)) == -1) {
461 DEBUG(0, ("push_ucs2_allocate failed!\n"));
465 nt_response.data = (unsigned char *)nt_response_ucs2;
466 nt_response.length = strlen_w(nt_response_ucs2)*sizeof(smb_ucs2_t);
468 if ((password = strdup_upper(opt_password)) == NULL) {
469 DEBUG(0, ("strdup_upper failed!\n"));
473 if (!convert_string_allocate(NULL, CH_UNIX,
477 &lm_response.length, True)) {
478 DEBUG(0, ("convert_string_allocate failed!\n"));
484 switch (break_which) {
488 lm_response.data[0]++;
491 nt_response.data[0]++;
494 SAFE_FREE(lm_response.data);
495 lm_response.length = 0;
498 SAFE_FREE(nt_response.data);
499 nt_response.length = 0;
503 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
511 &error_string, NULL);
513 SAFE_FREE(nt_response.data);
514 SAFE_FREE(lm_response.data);
515 data_blob_free(&chall);
517 if (!NT_STATUS_IS_OK(nt_status)) {
518 d_printf("%s (0x%x)\n",
520 NT_STATUS_V(nt_status));
521 SAFE_FREE(error_string);
522 return break_which == BREAK_NT;
525 return break_which != BREAK_NT;
528 static bool test_plaintext_none_broken(void) {
529 return test_plaintext(BREAK_NONE);
532 static bool test_plaintext_lm_broken(void) {
533 return test_plaintext(BREAK_LM);
536 static bool test_plaintext_nt_broken(void) {
537 return test_plaintext(BREAK_NT);
540 static bool test_plaintext_nt_only(void) {
541 return test_plaintext(NO_LM);
544 static bool test_plaintext_lm_only(void) {
545 return test_plaintext(NO_NT);
559 - plaintext tests (in challenge-response feilds)
561 check we get the correct session key in each case
562 check what values we get for the LM session key
566 static const struct ntlm_tests {
571 {test_lm_ntlm, "LM and NTLM"},
573 {test_ntlm_in_lm, "NTLM in LM"},
574 {test_ntlm_in_both, "NTLM in both"},
575 {test_ntlmv2, "NTLMv2"},
576 {test_lmv2_ntlmv2, "NTLMv2 and LMv2"},
578 {test_ntlmv2_lmv2_broken, "NTLMv2 and LMv2, LMv2 broken"},
579 {test_ntlmv2_ntlmv2_broken, "NTLMv2 and LMv2, NTLMv2 broken"},
580 {test_ntlm_lm_broken, "NTLM and LM, LM broken"},
581 {test_ntlm_ntlm_broken, "NTLM and LM, NTLM broken"},
582 {test_plaintext_none_broken, "Plaintext"},
583 {test_plaintext_lm_broken, "Plaintext LM broken"},
584 {test_plaintext_nt_broken, "Plaintext NT broken"},
585 {test_plaintext_nt_only, "Plaintext NT only"},
586 {test_plaintext_lm_only, "Plaintext LM only"},
590 bool diagnose_ntlm_auth(void)
595 for (i=0; test_table[i].fn; i++) {
596 if (!test_table[i].fn()) {
597 DEBUG(1, ("Test %s failed!\n", test_table[i].name));