2 Unix SMB/Netbios implementation.
4 handle NLTMSSP, server side
6 Copyright (C) Andrew Tridgell 2001
7 Copyright (C) Andrew Bartlett 2001-2003
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 * Print out the NTLMSSP flags for debugging
28 * @param neg_flags The flags from the packet
31 void debug_ntlmssp_flags(uint32 neg_flags)
33 DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
35 if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
36 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_UNICODE\n"));
37 if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
38 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM\n"));
39 if (neg_flags & NTLMSSP_REQUEST_TARGET)
40 DEBUGADD(4, (" NTLMSSP_REQUEST_TARGET\n"));
41 if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
42 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SIGN\n"));
43 if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
44 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SEAL\n"));
45 if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
46 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_LM_KEY\n"));
47 if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
48 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NETWARE\n"));
49 if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
50 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM\n"));
51 if (neg_flags & NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED)
52 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED\n"));
53 if (neg_flags & NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED)
54 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED\n"));
55 if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
56 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
57 if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
58 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
59 if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
60 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM2\n"));
61 if (neg_flags & NTLMSSP_CHAL_TARGET_INFO)
62 DEBUGADD(4, (" NTLMSSP_CHAL_TARGET_INFO\n"));
63 if (neg_flags & NTLMSSP_NEGOTIATE_128)
64 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_128\n"));
65 if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
66 DEBUGADD(4, (" NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
70 * Default challenge generation code.
74 static const uint8 *get_challenge(struct ntlmssp_state *ntlmssp_state)
77 generate_random_buffer(chal, sizeof(chal), False);
83 * Determine correct target name flags for reply, given server role
84 * and negotiated flags
86 * @param ntlmssp_state NTLMSSP State
87 * @param neg_flags The flags from the packet
88 * @param chal_flags The flags to be set in the reply packet
89 * @return The 'target name' string.
92 static const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
93 uint32 neg_flags, uint32 *chal_flags)
95 if (neg_flags & NTLMSSP_REQUEST_TARGET) {
96 *chal_flags |= NTLMSSP_CHAL_TARGET_INFO;
97 *chal_flags |= NTLMSSP_REQUEST_TARGET;
98 if (ntlmssp_state->server_role == ROLE_STANDALONE) {
99 *chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
100 return ntlmssp_state->get_global_myname();
102 *chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN;
103 return ntlmssp_state->get_domain();
111 * Next state function for the Negotiate packet
113 * @param ntlmssp_state NTLMSSP State
114 * @param request The request, as a DATA_BLOB
115 * @param request The reply, as an allocated DATA_BLOB, caller to free.
116 * @return Errors or MORE_PROCESSING_REQUIRED if a reply is sent.
119 static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
120 const DATA_BLOB request, DATA_BLOB *reply)
122 DATA_BLOB struct_blob;
123 fstring dnsname, dnsdomname;
124 uint32 neg_flags = 0;
125 uint32 ntlmssp_command, chal_flags;
126 char *cliname=NULL, *domname=NULL;
127 const uint8 *cryptkey;
128 const char *target_name;
130 /* parse the NTLMSSP packet */
132 file_save("ntlmssp_negotiate.dat", request.data, request.length);
135 if (request.length) {
136 if (!msrpc_parse(&request, "CddAA",
142 DEBUG(1, ("ntlmssp_server_negotiate: failed to parse NTLMSSP:\n"));
143 dump_data(2, (const char *)request.data, request.length);
144 return NT_STATUS_INVALID_PARAMETER;
150 debug_ntlmssp_flags(neg_flags);
153 cryptkey = ntlmssp_state->get_challenge(ntlmssp_state);
155 data_blob_free(&ntlmssp_state->chal);
156 ntlmssp_state->chal = data_blob(cryptkey, 8);
158 /* Give them the challenge. For now, ignore neg_flags and just
159 return the flags we want. Obviously this is not correct */
162 NTLMSSP_NEGOTIATE_128 |
163 NTLMSSP_NEGOTIATE_NTLM;
165 if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
166 chal_flags |= NTLMSSP_NEGOTIATE_UNICODE;
167 ntlmssp_state->unicode = True;
169 chal_flags |= NTLMSSP_NEGOTIATE_OEM;
172 target_name = ntlmssp_target_name(ntlmssp_state,
173 neg_flags, &chal_flags);
175 if (target_name == NULL)
176 return NT_STATUS_INVALID_PARAMETER;
178 /* This should be a 'netbios domain -> DNS domain' mapping */
179 dnsdomname[0] = '\0';
180 get_mydomname(dnsdomname);
181 strlower_m(dnsdomname);
184 get_myfullname(dnsname);
187 if (chal_flags & NTLMSSP_CHAL_TARGET_INFO)
189 const char *target_name_dns = "";
190 if (chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN) {
191 target_name_dns = dnsdomname;
192 } else if (chal_flags |= NTLMSSP_TARGET_TYPE_SERVER) {
193 target_name_dns = dnsname;
196 msrpc_gen(&struct_blob, "aaaaa",
197 ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_DOMAIN, target_name,
198 ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_SERVER, ntlmssp_state->get_global_myname(),
199 ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_DOMAIN_DNS, target_name_dns,
200 ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_SERVER_DNS, dnsdomname,
201 ntlmssp_state->unicode, 0, "");
203 struct_blob = data_blob(NULL, 0);
207 const char *gen_string;
208 if (ntlmssp_state->unicode) {
209 gen_string = "CdUdbddB";
211 gen_string = "CdAdbddB";
214 msrpc_gen(reply, gen_string,
221 struct_blob.data, struct_blob.length);
224 data_blob_free(&struct_blob);
226 ntlmssp_state->expected_state = NTLMSSP_AUTH;
228 return NT_STATUS_MORE_PROCESSING_REQUIRED;
232 * Next state function for the Authenticate packet
234 * @param ntlmssp_state NTLMSSP State
235 * @param request The request, as a DATA_BLOB
236 * @param request The reply, as an allocated DATA_BLOB, caller to free.
237 * @return Errors or NT_STATUS_OK.
240 static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
241 const DATA_BLOB request, DATA_BLOB *reply)
244 uint32 ntlmssp_command, neg_flags;
247 const char *parse_string;
249 /* parse the NTLMSSP packet */
251 file_save("ntlmssp_auth.dat", request.data, request.length);
254 if (ntlmssp_state->unicode) {
255 parse_string = "CdBBUUUBd";
257 parse_string = "CdBBAAABd";
260 data_blob_free(&ntlmssp_state->lm_resp);
261 data_blob_free(&ntlmssp_state->nt_resp);
263 SAFE_FREE(ntlmssp_state->user);
264 SAFE_FREE(ntlmssp_state->domain);
265 SAFE_FREE(ntlmssp_state->workstation);
267 /* now the NTLMSSP encoded auth hashes */
268 if (!msrpc_parse(&request, parse_string,
271 &ntlmssp_state->lm_resp,
272 &ntlmssp_state->nt_resp,
273 &ntlmssp_state->domain,
274 &ntlmssp_state->user,
275 &ntlmssp_state->workstation,
278 DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
279 dump_data(2, (const char *)request.data, request.length);
280 return NT_STATUS_INVALID_PARAMETER;
283 data_blob_free(&sess_key);
285 DEBUG(3,("Got user=[%s] domain=[%s] workstation=[%s] len1=%lu len2=%lu\n",
286 ntlmssp_state->user, ntlmssp_state->domain, ntlmssp_state->workstation, (unsigned long)ntlmssp_state->lm_resp.length, (unsigned long)ntlmssp_state->nt_resp.length));
289 file_save("nthash1.dat", &ntlmssp_state->nt_resp.data, &ntlmssp_state->nt_resp.length);
290 file_save("lmhash1.dat", &ntlmssp_state->lm_resp.data, &ntlmssp_state->lm_resp.length);
293 nt_status = ntlmssp_state->check_password(ntlmssp_state);
295 *reply = data_blob(NULL, 0);
301 * Create an NTLMSSP state machine
303 * @param ntlmssp_state NTLMSSP State, allocated by this function
306 NTSTATUS ntlmssp_server_start(NTLMSSP_STATE **ntlmssp_state)
310 mem_ctx = talloc_init("NTLMSSP context");
312 *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
313 if (!*ntlmssp_state) {
314 DEBUG(0,("ntlmssp_server_start: talloc failed!\n"));
315 talloc_destroy(mem_ctx);
316 return NT_STATUS_NO_MEMORY;
319 (*ntlmssp_state)->mem_ctx = mem_ctx;
320 (*ntlmssp_state)->get_challenge = get_challenge;
322 (*ntlmssp_state)->get_global_myname = global_myname;
323 (*ntlmssp_state)->get_domain = lp_workgroup;
324 (*ntlmssp_state)->server_role = ROLE_DOMAIN_MEMBER; /* a good default */
326 (*ntlmssp_state)->expected_state = NTLMSSP_NEGOTIATE;
332 * End an NTLMSSP state machine
334 * @param ntlmssp_state NTLMSSP State, free()ed by this function
337 NTSTATUS ntlmssp_server_end(NTLMSSP_STATE **ntlmssp_state)
339 TALLOC_CTX *mem_ctx = (*ntlmssp_state)->mem_ctx;
341 data_blob_free(&(*ntlmssp_state)->chal);
342 data_blob_free(&(*ntlmssp_state)->lm_resp);
343 data_blob_free(&(*ntlmssp_state)->nt_resp);
345 SAFE_FREE((*ntlmssp_state)->user);
346 SAFE_FREE((*ntlmssp_state)->domain);
347 SAFE_FREE((*ntlmssp_state)->workstation);
349 talloc_destroy(mem_ctx);
350 *ntlmssp_state = NULL;
355 * Next state function for the NTLMSSP state machine
357 * @param ntlmssp_state NTLMSSP State
358 * @param request The request, as a DATA_BLOB
359 * @param request The reply, as an allocated DATA_BLOB, caller to free.
360 * @return Errors, NT_STATUS_MORE_PROCESSING_REQUIRED or NT_STATUS_OK.
363 NTSTATUS ntlmssp_server_update(NTLMSSP_STATE *ntlmssp_state,
364 const DATA_BLOB request, DATA_BLOB *reply)
366 uint32 ntlmssp_command;
367 *reply = data_blob(NULL, 0);
369 if (request.length) {
370 if (!msrpc_parse(&request, "Cd",
373 return NT_STATUS_INVALID_PARAMETER;
376 /* 'datagram' mode - no neg packet */
377 ntlmssp_command = NTLMSSP_NEGOTIATE;
380 if (ntlmssp_command != ntlmssp_state->expected_state) {
381 DEBUG(1, ("got NTLMSSP command %u, expected %u\n", ntlmssp_command, ntlmssp_state->expected_state));
382 return NT_STATUS_INVALID_PARAMETER;
385 if (ntlmssp_command == NTLMSSP_NEGOTIATE) {
386 return ntlmssp_server_negotiate(ntlmssp_state, request, reply);
387 } else if (ntlmssp_command == NTLMSSP_AUTH) {
388 return ntlmssp_server_auth(ntlmssp_state, request, reply);
390 DEBUG(1, ("unknown NTLMSSP command %u, expected %u\n", ntlmssp_command, ntlmssp_state->expected_state));
391 return NT_STATUS_INVALID_PARAMETER;
395 /*********************************************************************
397 *********************************************************************/
400 * Next state function for the Initial packet
402 * @param ntlmssp_state NTLMSSP State
403 * @param request The request, as a DATA_BLOB. reply.data must be NULL
404 * @param request The reply, as an allocated DATA_BLOB, caller to free.
405 * @return Errors or NT_STATUS_OK.
408 static NTSTATUS ntlmssp_client_initial(struct ntlmssp_client_state *ntlmssp_state,
409 DATA_BLOB reply, DATA_BLOB *next_request)
411 if (ntlmssp_state->unicode) {
412 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
415 if (ntlmssp_state->use_ntlmv2) {
416 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
419 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
421 /* generate the ntlmssp negotiate packet */
422 msrpc_gen(next_request, "CddAA",
425 ntlmssp_state->neg_flags,
426 ntlmssp_state->get_domain(),
427 ntlmssp_state->get_global_myname());
429 return NT_STATUS_MORE_PROCESSING_REQUIRED;
433 * Next state function for the Challenge Packet. Generate an auth packet.
435 * @param ntlmssp_state NTLMSSP State
436 * @param request The request, as a DATA_BLOB. reply.data must be NULL
437 * @param request The reply, as an allocated DATA_BLOB, caller to free.
438 * @return Errors or NT_STATUS_OK.
441 static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_client_state *ntlmssp_state,
442 const DATA_BLOB reply, DATA_BLOB *next_request)
444 uint32 chal_flags, ntlmssp_command, unkn1, unkn2;
445 DATA_BLOB server_domain_blob;
446 DATA_BLOB challenge_blob;
447 DATA_BLOB struct_blob = data_blob(NULL, 0);
449 const char *chal_parse_string;
450 const char *auth_gen_string;
451 DATA_BLOB lm_response = data_blob(NULL, 0);
452 DATA_BLOB nt_response = data_blob(NULL, 0);
453 DATA_BLOB session_key = data_blob(NULL, 0);
454 DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
456 if (!msrpc_parse(&reply, "CdBd",
461 DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n"));
462 dump_data(2, (const char *)reply.data, reply.length);
464 return NT_STATUS_INVALID_PARAMETER;
467 data_blob_free(&server_domain_blob);
469 DEBUG(3, ("Got challenge flags:\n"));
470 debug_ntlmssp_flags(chal_flags);
472 if (chal_flags & NTLMSSP_NEGOTIATE_UNICODE) {
473 if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
474 chal_parse_string = "CdUdbddB";
476 chal_parse_string = "CdUdbdd";
478 auth_gen_string = "CdBBUUUBd";
479 ntlmssp_state->unicode = True;
480 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
481 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_OEM;
482 } else if (chal_flags & NTLMSSP_NEGOTIATE_OEM) {
483 if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
484 chal_parse_string = "CdAdbddB";
486 chal_parse_string = "CdAdbdd";
489 auth_gen_string = "CdBBAAABd";
491 ntlmssp_state->unicode = False;
492 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_UNICODE;
493 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
495 return NT_STATUS_INVALID_PARAMETER;
498 if (chal_flags & NTLMSSP_NEGOTIATE_LM_KEY && lp_client_lanman_auth()) {
499 /* server forcing us to use LM */
500 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
501 ntlmssp_state->use_ntlmv2 = False;
503 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
506 if (!(chal_flags & NTLMSSP_NEGOTIATE_NTLM2)) {
507 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
510 if (!(chal_flags & NTLMSSP_NEGOTIATE_128)) {
511 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_128;
514 if (!(chal_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)) {
515 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_KEY_EXCH;
518 DEBUG(3, ("NTLMSSP: Set final flags:\n"));
519 debug_ntlmssp_flags(ntlmssp_state->neg_flags);
521 if (!msrpc_parse(&reply, chal_parse_string,
529 DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n"));
530 dump_data(2, (const char *)reply.data, reply.length);
531 return NT_STATUS_INVALID_PARAMETER;
534 ntlmssp_state->server_domain = talloc_strdup(ntlmssp_state->mem_ctx,
537 SAFE_FREE(server_domain);
538 if (challenge_blob.length != 8) {
539 data_blob_free(&struct_blob);
540 return NT_STATUS_INVALID_PARAMETER;
543 if (!ntlmssp_state->password) {
544 /* do nothing - blobs are zero length */
545 } else if (ntlmssp_state->use_ntlmv2) {
547 if (!struct_blob.length) {
548 /* be lazy, match win2k - we can't do NTLMv2 without it */
549 return NT_STATUS_INVALID_PARAMETER;
552 /* TODO: if the remote server is standalone, then we should replace 'domain'
553 with the server name as supplied above */
555 if (!SMBNTLMv2encrypt(ntlmssp_state->user,
556 ntlmssp_state->domain,
557 ntlmssp_state->password, &challenge_blob,
559 &lm_response, &nt_response, &session_key)) {
560 data_blob_free(&challenge_blob);
561 data_blob_free(&struct_blob);
562 return NT_STATUS_NO_MEMORY;
564 } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
565 struct MD5Context md5_session_nonce_ctx;
567 uchar session_nonce[16];
568 uchar session_nonce_hash[16];
569 uchar nt_session_key[16];
570 E_md4hash(ntlmssp_state->password, nt_hash);
572 lm_response = data_blob(NULL, 24);
573 generate_random_buffer(lm_response.data, 8, False);
574 memset(lm_response.data+8, 0, 16);
576 memcpy(session_nonce, challenge_blob.data, 8);
577 memcpy(&session_nonce[8], lm_response.data, 8);
579 MD5Init(&md5_session_nonce_ctx);
580 MD5Update(&md5_session_nonce_ctx, challenge_blob.data, 8);
581 MD5Update(&md5_session_nonce_ctx, lm_response.data, 8);
582 MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
584 nt_response = data_blob(NULL, 24);
585 SMBNTencrypt(ntlmssp_state->password,
589 session_key = data_blob(NULL, 16);
591 SMBsesskeygen_ntv1(nt_hash, NULL, nt_session_key);
592 hmac_md5(nt_session_key, session_nonce, sizeof(session_nonce), session_key.data);
598 E_deshash(ntlmssp_state->password, lm_hash);
599 E_md4hash(ntlmssp_state->password, nt_hash);
601 /* lanman auth is insecure, it may be disabled */
602 if (lp_client_lanman_auth()) {
603 lm_response = data_blob(NULL, 24);
604 SMBencrypt(ntlmssp_state->password,challenge_blob.data,
608 nt_response = data_blob(NULL, 24);
609 SMBNTencrypt(ntlmssp_state->password,challenge_blob.data,
612 session_key = data_blob(NULL, 16);
613 if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
614 && lp_client_lanman_auth()) {
615 SMBsesskeygen_lmv1(lm_hash, lm_response.data,
618 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
621 data_blob_free(&struct_blob);
623 /* Key exchange encryptes a new client-generated session key with
624 the password-derived key */
625 if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
626 uint8 client_session_key[16];
628 generate_random_buffer(client_session_key, sizeof(client_session_key), False);
629 encrypted_session_key = data_blob(client_session_key, sizeof(client_session_key));
630 SamOEMhash(encrypted_session_key.data, session_key.data, encrypted_session_key.length);
631 data_blob_free(&session_key);
632 session_key = data_blob(client_session_key, sizeof(client_session_key));
635 /* this generates the actual auth packet */
636 if (!msrpc_gen(next_request, auth_gen_string,
639 lm_response.data, lm_response.length,
640 nt_response.data, nt_response.length,
641 ntlmssp_state->domain,
643 ntlmssp_state->get_global_myname(),
644 encrypted_session_key.data, encrypted_session_key.length,
645 ntlmssp_state->neg_flags)) {
647 data_blob_free(&lm_response);
648 data_blob_free(&nt_response);
649 data_blob_free(&session_key);
650 return NT_STATUS_NO_MEMORY;
653 data_blob_free(&encrypted_session_key);
655 data_blob_free(&ntlmssp_state->chal);
656 data_blob_free(&ntlmssp_state->lm_resp);
657 data_blob_free(&ntlmssp_state->nt_resp);
658 data_blob_free(&ntlmssp_state->session_key);
660 ntlmssp_state->chal = challenge_blob;
661 ntlmssp_state->lm_resp = lm_response;
662 ntlmssp_state->nt_resp = nt_response;
663 ntlmssp_state->session_key = session_key;
665 return NT_STATUS_MORE_PROCESSING_REQUIRED;
668 NTSTATUS ntlmssp_client_start(NTLMSSP_CLIENT_STATE **ntlmssp_state)
672 mem_ctx = talloc_init("NTLMSSP Client context");
674 *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
675 if (!*ntlmssp_state) {
676 DEBUG(0,("ntlmssp_server_start: talloc failed!\n"));
677 talloc_destroy(mem_ctx);
678 return NT_STATUS_NO_MEMORY;
681 (*ntlmssp_state)->mem_ctx = mem_ctx;
683 (*ntlmssp_state)->get_global_myname = global_myname;
684 (*ntlmssp_state)->get_domain = lp_workgroup;
686 (*ntlmssp_state)->unicode = True;
688 (*ntlmssp_state)->use_ntlmv2 = lp_client_ntlmv2_auth();
690 (*ntlmssp_state)->neg_flags =
691 NTLMSSP_NEGOTIATE_128 |
692 NTLMSSP_NEGOTIATE_NTLM |
693 NTLMSSP_NEGOTIATE_NTLM2 |
694 NTLMSSP_NEGOTIATE_KEY_EXCH |
696 * We need to set this to allow a later SetPassword
697 * via the SAMR pipe to succeed. Strange.... We could
698 * also add NTLMSSP_NEGOTIATE_SEAL here. JRA.
700 NTLMSSP_NEGOTIATE_SIGN |
701 NTLMSSP_REQUEST_TARGET;
703 (*ntlmssp_state)->ref_count = 1;
708 NTSTATUS ntlmssp_client_end(NTLMSSP_CLIENT_STATE **ntlmssp_state)
710 TALLOC_CTX *mem_ctx = (*ntlmssp_state)->mem_ctx;
712 (*ntlmssp_state)->ref_count--;
714 if ((*ntlmssp_state)->ref_count == 0) {
715 data_blob_free(&(*ntlmssp_state)->chal);
716 data_blob_free(&(*ntlmssp_state)->lm_resp);
717 data_blob_free(&(*ntlmssp_state)->nt_resp);
718 data_blob_free(&(*ntlmssp_state)->session_key);
719 data_blob_free(&(*ntlmssp_state)->stored_response);
720 talloc_destroy(mem_ctx);
723 *ntlmssp_state = NULL;
727 NTSTATUS ntlmssp_client_update(NTLMSSP_CLIENT_STATE *ntlmssp_state,
728 DATA_BLOB reply, DATA_BLOB *next_request)
730 NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER;
731 uint32 ntlmssp_command;
732 *next_request = data_blob(NULL, 0);
735 /* If there is a cached reply, use it - otherwise this is the first packet */
736 if (!ntlmssp_state->stored_response.length) {
737 return ntlmssp_client_initial(ntlmssp_state, reply, next_request);
740 reply = ntlmssp_state->stored_response;
743 if (!msrpc_parse(&reply, "Cd",
746 return NT_STATUS_INVALID_PARAMETER;
749 if (ntlmssp_command == NTLMSSP_CHALLENGE) {
750 nt_status = ntlmssp_client_challenge(ntlmssp_state, reply, next_request);
752 if (ntlmssp_state->stored_response.length) {
753 data_blob_free(&ntlmssp_state->stored_response);
758 NTSTATUS ntlmssp_set_username(NTLMSSP_CLIENT_STATE *ntlmssp_state, const char *user)
760 ntlmssp_state->user = talloc_strdup(ntlmssp_state->mem_ctx, user);
761 if (!ntlmssp_state->user) {
762 return NT_STATUS_NO_MEMORY;
767 NTSTATUS ntlmssp_set_password(NTLMSSP_CLIENT_STATE *ntlmssp_state, const char *password)
770 ntlmssp_state->password = NULL;
772 ntlmssp_state->password = talloc_strdup(ntlmssp_state->mem_ctx, password);
773 if (!ntlmssp_state->password) {
774 return NT_STATUS_NO_MEMORY;
780 NTSTATUS ntlmssp_set_domain(NTLMSSP_CLIENT_STATE *ntlmssp_state, const char *domain)
782 ntlmssp_state->domain = talloc_strdup(ntlmssp_state->mem_ctx, domain);
783 if (!ntlmssp_state->domain) {
784 return NT_STATUS_NO_MEMORY;
790 * Store a DATA_BLOB containing an NTLMSSP response, for use later.
791 * This 'keeps' the data blob - the caller must *not* free it.
794 NTSTATUS ntlmssp_client_store_response(NTLMSSP_CLIENT_STATE *ntlmssp_state,
797 data_blob_free(&ntlmssp_state->stored_response);
798 ntlmssp_state->stored_response = response;