source: trunk/src/secur32/ntlm.c@ 22017

Last change on this file since 22017 was 21364, checked in by vladest, 16 years ago
  • Added SSP DLLs loader. Still under development. Do not use in working configurations
File size: 66.0 KB
Line 
1/*
2 * Copyright 2005, 2006 Kai Blin
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 *
18 * This file implements the NTLM security provider.
19 */
20
21#include <assert.h>
22#include <stdarg.h>
23#include <stdio.h>
24#include "windef.h"
25#include "winbase.h"
26#include "winnls.h"
27#include "wincred.h"
28#include "rpc.h"
29#include "sspi.h"
30#include "basetsd.h"
31#include "lm.h"
32#include "secur32_priv.h"
33#include "hmac_md5.h"
34#include "wine/unicode.h"
35#include "wine/debug.h"
36
37WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
38
39#define NTLM_MAX_BUF 1904
40#define MIN_NTLM_AUTH_MAJOR_VERSION 3
41#define MIN_NTLM_AUTH_MINOR_VERSION 0
42#define MIN_NTLM_AUTH_MICRO_VERSION 25
43
44static CHAR ntlm_auth[] = "ntlm_auth";
45
46typedef struct _NtlmCredentials
47{
48 HelperMode mode;
49
50 /* these are all in the Unix codepage */
51 char *username_arg;
52 char *domain_arg;
53 char *password; /* not nul-terminated */
54 int pwlen;
55} NtlmCredentials, *PNtlmCredentials;
56
57/***********************************************************************
58 * QueryCredentialsAttributesA
59 */
60static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
61 PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
62{
63 SECURITY_STATUS ret;
64
65 TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
66
67 if(ulAttribute == SECPKG_ATTR_NAMES)
68 {
69 FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
70 ret = SEC_E_UNSUPPORTED_FUNCTION;
71 }
72 else
73 ret = SEC_E_UNSUPPORTED_FUNCTION;
74
75 return ret;
76}
77
78/***********************************************************************
79 * QueryCredentialsAttributesW
80 */
81static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
82 PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
83{
84 SECURITY_STATUS ret;
85
86 TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
87
88 if(ulAttribute == SECPKG_ATTR_NAMES)
89 {
90 FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
91 ret = SEC_E_UNSUPPORTED_FUNCTION;
92 }
93 else
94 ret = SEC_E_UNSUPPORTED_FUNCTION;
95
96 return ret;
97}
98
99static char *ntlm_GetUsernameArg(LPCWSTR userW, INT userW_length)
100{
101 static const char username_arg[] = "--username=";
102 char *user;
103 int unixcp_size;
104
105 unixcp_size = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
106 userW, userW_length, NULL, 0, NULL, NULL) + sizeof(username_arg);
107 user = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
108 if (!user) return NULL;
109 memcpy(user, username_arg, sizeof(username_arg) - 1);
110 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, userW, userW_length,
111 user + sizeof(username_arg) - 1,
112 unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
113 user[unixcp_size - 1] = '\0';
114 return user;
115}
116
117static char *ntlm_GetDomainArg(LPCWSTR domainW, INT domainW_length)
118{
119 static const char domain_arg[] = "--domain=";
120 char *domain;
121 int unixcp_size;
122
123 unixcp_size = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
124 domainW, domainW_length, NULL, 0, NULL, NULL) + sizeof(domain_arg);
125 domain = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
126 if (!domain) return NULL;
127 memcpy(domain, domain_arg, sizeof(domain_arg) - 1);
128 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, domainW,
129 domainW_length, domain + sizeof(domain_arg) - 1,
130 unixcp_size - sizeof(domain) + 1, NULL, NULL);
131 domain[unixcp_size - 1] = '\0';
132 return domain;
133}
134
135/***********************************************************************
136 * AcquireCredentialsHandleW
137 */
138static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
139 SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
140 PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
141 PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
142{
143 SECURITY_STATUS ret;
144 PNtlmCredentials ntlm_cred = NULL;
145 SEC_WCHAR *username = NULL, *domain = NULL;
146
147 TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
148 debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
149 pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
150
151 switch(fCredentialUse)
152 {
153 case SECPKG_CRED_INBOUND:
154 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
155 if (!ntlm_cred)
156 ret = SEC_E_INSUFFICIENT_MEMORY;
157 else
158 {
159 ntlm_cred->mode = NTLM_SERVER;
160 ntlm_cred->username_arg = NULL;
161 ntlm_cred->domain_arg = NULL;
162 ntlm_cred->password = NULL;
163 ntlm_cred->pwlen = 0;
164 phCredential->dwUpper = fCredentialUse;
165 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
166 ret = SEC_E_OK;
167 }
168 break;
169 case SECPKG_CRED_OUTBOUND:
170 {
171 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
172 if (!ntlm_cred)
173 {
174 ret = SEC_E_INSUFFICIENT_MEMORY;
175 break;
176 }
177 ntlm_cred->mode = NTLM_CLIENT;
178 ntlm_cred->username_arg = NULL;
179 ntlm_cred->domain_arg = NULL;
180 ntlm_cred->password = NULL;
181 ntlm_cred->pwlen = 0;
182
183 if(pAuthData != NULL)
184 {
185 PSEC_WINNT_AUTH_IDENTITY_W auth_data =
186 (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
187
188 TRACE("Username is %s\n", debugstr_wn(auth_data->User, auth_data->UserLength));
189 TRACE("Domain name is %s\n", debugstr_wn(auth_data->Domain, auth_data->DomainLength));
190
191 ntlm_cred->username_arg = ntlm_GetUsernameArg(auth_data->User, auth_data->UserLength);
192 ntlm_cred->domain_arg = ntlm_GetDomainArg(auth_data->Domain, auth_data->DomainLength);
193
194 if(auth_data->PasswordLength != 0)
195 {
196 ntlm_cred->pwlen = WideCharToMultiByte(CP_ACP,
197 WC_NO_BEST_FIT_CHARS, auth_data->Password,
198 auth_data->PasswordLength, NULL, 0, NULL,
199 NULL);
200
201 ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
202 ntlm_cred->pwlen);
203
204 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
205 auth_data->Password, auth_data->PasswordLength,
206 ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
207 }
208 }
209
210 phCredential->dwUpper = fCredentialUse;
211 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
212 TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
213 phCredential->dwUpper, phCredential->dwLower);
214 ret = SEC_E_OK;
215 break;
216 }
217 case SECPKG_CRED_BOTH:
218 FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
219 ret = SEC_E_UNSUPPORTED_FUNCTION;
220 phCredential = NULL;
221 break;
222 default:
223 phCredential = NULL;
224 ret = SEC_E_UNKNOWN_CREDENTIALS;
225 }
226
227 HeapFree(GetProcessHeap(), 0, username);
228 HeapFree(GetProcessHeap(), 0, domain);
229
230 return ret;
231}
232
233/***********************************************************************
234 * AcquireCredentialsHandleA
235 */
236static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
237 SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
238 PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
239 PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
240{
241 SECURITY_STATUS ret;
242 int user_sizeW, domain_sizeW, passwd_sizeW;
243
244 SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
245
246 PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
247 PSEC_WINNT_AUTH_IDENTITY_A identity = NULL;
248
249 TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
250 debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
251 pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
252
253 if(pszPackage != NULL)
254 {
255 int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
256 NULL, 0);
257
258 package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
259 sizeof(SEC_WCHAR));
260 MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
261 }
262
263
264 if(pAuthData != NULL)
265 {
266 identity = (PSEC_WINNT_AUTH_IDENTITY_A)pAuthData;
267
268 if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
269 {
270 pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
271 sizeof(SEC_WINNT_AUTH_IDENTITY_W));
272
273 if(identity->UserLength != 0)
274 {
275 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
276 (LPCSTR)identity->User, identity->UserLength, NULL, 0);
277 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
278 sizeof(SEC_WCHAR));
279 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
280 identity->UserLength, user, user_sizeW);
281 }
282 else
283 {
284 user_sizeW = 0;
285 }
286
287 if(identity->DomainLength != 0)
288 {
289 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
290 (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
291 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
292 * sizeof(SEC_WCHAR));
293 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
294 identity->DomainLength, domain, domain_sizeW);
295 }
296 else
297 {
298 domain_sizeW = 0;
299 }
300
301 if(identity->PasswordLength != 0)
302 {
303 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
304 (LPCSTR)identity->Password, identity->PasswordLength,
305 NULL, 0);
306 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
307 * sizeof(SEC_WCHAR));
308 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
309 identity->PasswordLength, passwd, passwd_sizeW);
310 }
311 else
312 {
313 passwd_sizeW = 0;
314 }
315
316 pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
317 pAuthDataW->User = user;
318 pAuthDataW->UserLength = user_sizeW;
319 pAuthDataW->Domain = domain;
320 pAuthDataW->DomainLength = domain_sizeW;
321 pAuthDataW->Password = passwd;
322 pAuthDataW->PasswordLength = passwd_sizeW;
323 }
324 else
325 {
326 pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
327 }
328 }
329
330 ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
331 pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
332 ptsExpiry);
333
334 HeapFree(GetProcessHeap(), 0, package);
335 HeapFree(GetProcessHeap(), 0, user);
336 HeapFree(GetProcessHeap(), 0, domain);
337 HeapFree(GetProcessHeap(), 0, passwd);
338 if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
339 HeapFree(GetProcessHeap(), 0, pAuthDataW);
340
341 return ret;
342}
343
344/*************************************************************************
345 * ntlm_GetTokenBufferIndex
346 * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
347 * Returns index if found or -1 if not found.
348 */
349static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
350{
351 UINT i;
352
353 TRACE("%p\n", pMessage);
354
355 for( i = 0; i < pMessage->cBuffers; ++i )
356 {
357 if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
358 return i;
359 }
360
361 return -1;
362}
363
364/*************************************************************************
365 * ntlm_GetDataBufferIndex
366 * Calculates the index of the first secbuffer with BufferType == SECBUFFER_DATA
367 * Returns index if found or -1 if not found.
368 */
369static int ntlm_GetDataBufferIndex(PSecBufferDesc pMessage)
370{
371 UINT i;
372
373 TRACE("%p\n", pMessage);
374
375 for( i = 0; i < pMessage->cBuffers; ++i )
376 {
377 if(pMessage->pBuffers[i].BufferType == SECBUFFER_DATA)
378 return i;
379 }
380
381 return -1;
382}
383
384static BOOL ntlm_GetCachedCredential(const SEC_WCHAR *pszTargetName, PCREDENTIALW *cred)
385{
386 LPCWSTR p;
387 LPCWSTR pszHost;
388 LPWSTR pszHostOnly;
389 BOOL ret;
390
391 if (!pszTargetName)
392 return FALSE;
393
394 /* try to get the start of the hostname from service principal name (SPN) */
395 pszHost = strchrW(pszTargetName, '/');
396 if (pszHost)
397 {
398 /* skip slash character */
399 pszHost++;
400
401 /* find end of host by detecting start of instance port or start of referrer */
402 p = strchrW(pszHost, ':');
403 if (!p)
404 p = strchrW(pszHost, '/');
405 if (!p)
406 p = pszHost + strlenW(pszHost);
407 }
408 else /* otherwise not an SPN, just a host */
409 {
410 pszHost = pszTargetName;
411 p = pszHost + strlenW(pszHost);
412 }
413
414 pszHostOnly = HeapAlloc(GetProcessHeap(), 0, (p - pszHost + 1) * sizeof(WCHAR));
415 if (!pszHostOnly)
416 return FALSE;
417
418 memcpy(pszHostOnly, pszHost, (p - pszHost) * sizeof(WCHAR));
419 pszHostOnly[p - pszHost] = '\0';
420
421 ret = CredReadW(pszHostOnly, CRED_TYPE_DOMAIN_PASSWORD, 0, cred);
422
423 HeapFree(GetProcessHeap(), 0, pszHostOnly);
424 return ret;
425}
426
427/***********************************************************************
428 * InitializeSecurityContextW
429 */
430static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
431 PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
432 ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
433 PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
434 PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
435{
436 SECURITY_STATUS ret;
437 PNtlmCredentials ntlm_cred = NULL;
438 PNegoHelper helper = NULL;
439 ULONG ctxt_attr = 0;
440 char* buffer, *want_flags = NULL;
441 PBYTE bin;
442 int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
443 int token_idx;
444 SEC_CHAR *username = NULL;
445 SEC_CHAR *domain = NULL;
446 SEC_CHAR *password = NULL;
447
448 TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
449 debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
450 Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
451
452 /****************************************
453 * When communicating with the client, there can be the
454 * following reply packets:
455 * YR <base64 blob> should be sent to the server
456 * PW should be sent back to helper with
457 * base64 encoded password
458 * AF <base64 blob> client is done, blob should be
459 * sent to server with KK prefixed
460 * GF <string list> A string list of negotiated flags
461 * GK <base64 blob> base64 encoded session key
462 * BH <char reason> something broke
463 */
464 /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
465
466 if(TargetDataRep == SECURITY_NETWORK_DREP){
467 TRACE("Setting SECURITY_NETWORK_DREP\n");
468 }
469
470 buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
471 bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
472
473 if((phContext == NULL) && (pInput == NULL))
474 {
475 static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
476 static CHAR credentials_argv[] = "--use-cached-creds";
477 SEC_CHAR *client_argv[5];
478 int pwlen = 0;
479
480 TRACE("First time in ISC()\n");
481
482 if(!phCredential)
483 {
484 ret = SEC_E_INVALID_HANDLE;
485 goto isc_end;
486 }
487
488 /* As the server side of sspi never calls this, make sure that
489 * the handler is a client handler.
490 */
491 ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
492 if(ntlm_cred->mode != NTLM_CLIENT)
493 {
494 TRACE("Cred mode = %d\n", ntlm_cred->mode);
495 ret = SEC_E_INVALID_HANDLE;
496 goto isc_end;
497 }
498
499 client_argv[0] = ntlm_auth;
500 client_argv[1] = helper_protocol;
501 if (!ntlm_cred->username_arg && !ntlm_cred->domain_arg)
502 {
503 LPWKSTA_USER_INFO_1 ui = NULL;
504 NET_API_STATUS status;
505 PCREDENTIALW cred;
506
507 if (ntlm_GetCachedCredential(pszTargetName, &cred))
508 {
509 LPWSTR p;
510 p = strchrW(cred->UserName, '\\');
511 if (p)
512 {
513 domain = ntlm_GetDomainArg(cred->UserName, p - cred->UserName);
514 p++;
515 }
516 else
517 {
518 domain = ntlm_GetDomainArg(NULL, 0);
519 p = cred->UserName;
520 }
521
522 username = ntlm_GetUsernameArg(p, -1);
523
524 if(cred->CredentialBlobSize != 0)
525 {
526 pwlen = WideCharToMultiByte(CP_ACP,
527 WC_NO_BEST_FIT_CHARS, (LPWSTR)cred->CredentialBlob,
528 cred->CredentialBlobSize / sizeof(WCHAR), NULL, 0,
529 NULL, NULL);
530
531 password = HeapAlloc(GetProcessHeap(), 0, pwlen);
532
533 WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
534 (LPWSTR)cred->CredentialBlob,
535 cred->CredentialBlobSize / sizeof(WCHAR),
536 password, pwlen, NULL, NULL);
537 }
538
539 CredFree(cred);
540
541 client_argv[2] = username;
542 client_argv[3] = domain;
543 client_argv[4] = NULL;
544 }
545 else
546 {
547 status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
548 if (status != NERR_Success || ui == NULL)
549 {
550 ret = SEC_E_NO_CREDENTIALS;
551 goto isc_end;
552 }
553 username = ntlm_GetUsernameArg(ui->wkui1_username, -1);
554
555 TRACE("using cached credentials\n");
556
557 client_argv[2] = username;
558 client_argv[3] = credentials_argv;
559 client_argv[4] = NULL;
560 }
561 }
562 else
563 {
564 client_argv[2] = ntlm_cred->username_arg;
565 client_argv[3] = ntlm_cred->domain_arg;
566 client_argv[4] = NULL;
567 }
568
569 if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
570 goto isc_end;
571
572 helper->mode = NTLM_CLIENT;
573 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
574 if (!helper->session_key)
575 {
576 cleanup_helper(helper);
577 ret = SEC_E_INSUFFICIENT_MEMORY;
578 goto isc_end;
579 }
580
581 /* Generate the dummy session key = MD4(MD4(password))*/
582 if(password || ntlm_cred->password)
583 {
584 SEC_WCHAR *unicode_password;
585 int passwd_lenW;
586
587 TRACE("Converting password to unicode.\n");
588 passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
589 password ? (LPCSTR)password : (LPCSTR)ntlm_cred->password,
590 password ? pwlen : ntlm_cred->pwlen,
591 NULL, 0);
592 unicode_password = HeapAlloc(GetProcessHeap(), 0,
593 passwd_lenW * sizeof(SEC_WCHAR));
594 MultiByteToWideChar(CP_ACP, 0, password ? (LPCSTR)password : (LPCSTR)ntlm_cred->password,
595 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
596
597 SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
598 passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
599
600 HeapFree(GetProcessHeap(), 0, unicode_password);
601 }
602 else
603 memset(helper->session_key, 0, 16);
604
605 /* Allocate space for a maximal string of
606 * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
607 * NTLMSSP_FEATURE_SESSION_KEY"
608 */
609 want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
610 if(want_flags == NULL)
611 {
612 cleanup_helper(helper);
613 ret = SEC_E_INSUFFICIENT_MEMORY;
614 goto isc_end;
615 }
616 lstrcpyA(want_flags, "SF");
617 if(fContextReq & ISC_REQ_CONFIDENTIALITY)
618 {
619 if(strstr(want_flags, "NTLMSSP_FEATURE_SEAL") == NULL)
620 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
621 }
622 if(fContextReq & ISC_REQ_CONNECTION)
623 ctxt_attr |= ISC_RET_CONNECTION;
624 if(fContextReq & ISC_REQ_EXTENDED_ERROR)
625 ctxt_attr |= ISC_RET_EXTENDED_ERROR;
626 if(fContextReq & ISC_REQ_INTEGRITY)
627 {
628 if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
629 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
630 }
631 if(fContextReq & ISC_REQ_MUTUAL_AUTH)
632 ctxt_attr |= ISC_RET_MUTUAL_AUTH;
633 if(fContextReq & ISC_REQ_REPLAY_DETECT)
634 {
635 if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
636 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
637 }
638 if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
639 {
640 if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
641 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
642 }
643 if(fContextReq & ISC_REQ_STREAM)
644 FIXME("ISC_REQ_STREAM\n");
645 if(fContextReq & ISC_REQ_USE_DCE_STYLE)
646 ctxt_attr |= ISC_RET_USED_DCE_STYLE;
647 if(fContextReq & ISC_REQ_DELEGATE)
648 ctxt_attr |= ISC_RET_DELEGATE;
649
650 /* If no password is given, try to use cached credentials. Fall back to an empty
651 * password if this failed. */
652 if(!password && !ntlm_cred->password)
653 {
654 lstrcpynA(buffer, "OK", max_len-1);
655 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
656 {
657 cleanup_helper(helper);
658 goto isc_end;
659 }
660 /* If the helper replied with "PW", using cached credentials failed */
661 if(!strncmp(buffer, "PW", 2))
662 {
663 TRACE("Using cached credentials failed.\n");
664 ret = SEC_E_NO_CREDENTIALS;
665 goto isc_end;
666 }
667 else /* Just do a noop on the next run */
668 lstrcpynA(buffer, "OK", max_len-1);
669 }
670 else
671 {
672 lstrcpynA(buffer, "PW ", max_len-1);
673 if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
674 password ? pwlen : ntlm_cred->pwlen, buffer+3,
675 max_len-3, &buffer_len)) != SEC_E_OK)
676 {
677 cleanup_helper(helper);
678 goto isc_end;
679 }
680
681 }
682
683 TRACE("Sending to helper: %s\n", debugstr_a(buffer));
684 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
685 {
686 cleanup_helper(helper);
687 goto isc_end;
688 }
689
690 TRACE("Helper returned %s\n", debugstr_a(buffer));
691
692 if(lstrlenA(want_flags) > 2)
693 {
694 TRACE("Want flags are %s\n", debugstr_a(want_flags));
695 lstrcpynA(buffer, want_flags, max_len-1);
696 if((ret = run_helper(helper, buffer, max_len, &buffer_len))
697 != SEC_E_OK)
698 goto isc_end;
699 if(!strncmp(buffer, "BH", 2))
700 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
701 }
702
703 lstrcpynA(buffer, "YR", max_len-1);
704
705 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
706 {
707 cleanup_helper(helper);
708 goto isc_end;
709 }
710
711 TRACE("%s\n", buffer);
712
713 if(strncmp(buffer, "YR ", 3) != 0)
714 {
715 /* Something borked */
716 TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
717 ret = SEC_E_INTERNAL_ERROR;
718 cleanup_helper(helper);
719 goto isc_end;
720 }
721 if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
722 max_len-1, &bin_len)) != SEC_E_OK)
723 {
724 cleanup_helper(helper);
725 goto isc_end;
726 }
727
728 /* put the decoded client blob into the out buffer */
729
730 phNewContext->dwUpper = ctxt_attr;
731 phNewContext->dwLower = (ULONG_PTR)helper;
732
733 ret = SEC_I_CONTINUE_NEEDED;
734 }
735 else
736 {
737 int input_token_idx;
738
739 /* handle second call here */
740 /* encode server data to base64 */
741 if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
742 {
743 ret = SEC_E_INVALID_TOKEN;
744 goto isc_end;
745 }
746
747 if(!phContext)
748 {
749 ret = SEC_E_INVALID_HANDLE;
750 goto isc_end;
751 }
752
753 /* As the server side of sspi never calls this, make sure that
754 * the handler is a client handler.
755 */
756 helper = (PNegoHelper)phContext->dwLower;
757 if(helper->mode != NTLM_CLIENT)
758 {
759 TRACE("Helper mode = %d\n", helper->mode);
760 ret = SEC_E_INVALID_HANDLE;
761 goto isc_end;
762 }
763
764 if (!pInput->pBuffers[input_token_idx].pvBuffer)
765 {
766 ret = SEC_E_INTERNAL_ERROR;
767 goto isc_end;
768 }
769
770 if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
771 {
772 TRACE("pInput->pBuffers[%d].cbBuffer is: %ld\n",
773 input_token_idx,
774 pInput->pBuffers[input_token_idx].cbBuffer);
775 ret = SEC_E_INVALID_TOKEN;
776 goto isc_end;
777 }
778 else
779 bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
780
781 memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
782
783 lstrcpynA(buffer, "TT ", max_len-1);
784
785 if((ret = encodeBase64(bin, bin_len, buffer+3,
786 max_len-3, &buffer_len)) != SEC_E_OK)
787 goto isc_end;
788
789 TRACE("Server sent: %s\n", debugstr_a(buffer));
790
791 /* send TT base64 blob to ntlm_auth */
792 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
793 goto isc_end;
794
795 TRACE("Helper replied: %s\n", debugstr_a(buffer));
796
797 if( (strncmp(buffer, "KK ", 3) != 0) &&
798 (strncmp(buffer, "AF ", 3) !=0))
799 {
800 TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
801 ret = SEC_E_INVALID_TOKEN;
802 goto isc_end;
803 }
804
805 /* decode the blob and send it to server */
806 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
807 &bin_len)) != SEC_E_OK)
808 {
809 goto isc_end;
810 }
811
812 phNewContext->dwUpper = ctxt_attr;
813 phNewContext->dwLower = (ULONG_PTR)helper;
814
815 ret = SEC_E_OK;
816 }
817
818 /* put the decoded client blob into the out buffer */
819
820 if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
821 {
822 TRACE("no SECBUFFER_TOKEN buffer could be found\n");
823 ret = SEC_E_BUFFER_TOO_SMALL;
824 if ((phContext == NULL) && (pInput == NULL))
825 {
826 cleanup_helper(helper);
827 phNewContext->dwUpper = 0;
828 phNewContext->dwLower = 0;
829 }
830 goto isc_end;
831 }
832
833 if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
834 {
835 pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
836 pOutput->pBuffers[token_idx].cbBuffer = bin_len;
837 }
838 else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
839 {
840 TRACE("out buffer is NULL or has not enough space\n");
841 ret = SEC_E_BUFFER_TOO_SMALL;
842 if ((phContext == NULL) && (pInput == NULL))
843 {
844 cleanup_helper(helper);
845 phNewContext->dwUpper = 0;
846 phNewContext->dwLower = 0;
847 }
848 goto isc_end;
849 }
850
851 if (!pOutput->pBuffers[token_idx].pvBuffer)
852 {
853 TRACE("out buffer is NULL\n");
854 ret = SEC_E_INTERNAL_ERROR;
855 if ((phContext == NULL) && (pInput == NULL))
856 {
857 cleanup_helper(helper);
858 phNewContext->dwUpper = 0;
859 phNewContext->dwLower = 0;
860 }
861 goto isc_end;
862 }
863
864 pOutput->pBuffers[token_idx].cbBuffer = bin_len;
865 memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
866
867 if(ret == SEC_E_OK)
868 {
869 TRACE("Getting negotiated flags\n");
870 lstrcpynA(buffer, "GF", max_len - 1);
871 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
872 goto isc_end;
873
874 if(buffer_len < 3)
875 {
876 TRACE("No flags negotiated.\n");
877 helper->neg_flags = 0l;
878 }
879 else
880 {
881 TRACE("Negotiated %s\n", debugstr_a(buffer));
882 sscanf(buffer + 3, "%lx", &(helper->neg_flags));
883 TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
884 }
885
886 TRACE("Getting session key\n");
887 lstrcpynA(buffer, "GK", max_len - 1);
888 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
889 goto isc_end;
890
891 if(strncmp(buffer, "BH", 2) == 0)
892 TRACE("No key negotiated.\n");
893 else if(strncmp(buffer, "GK ", 3) == 0)
894 {
895 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
896 &bin_len)) != SEC_E_OK)
897 {
898 TRACE("Failed to decode session key\n");
899 }
900 TRACE("Session key is %s\n", debugstr_a(buffer+3));
901 HeapFree(GetProcessHeap(), 0, helper->session_key);
902 helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
903 if(!helper->session_key)
904 {
905 TRACE("Failed to allocate memory for session key\n");
906 ret = SEC_E_INTERNAL_ERROR;
907 goto isc_end;
908 }
909 memcpy(helper->session_key, bin, bin_len);
910 }
911
912 helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
913 SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
914 helper->crypt.ntlm.seq_num = 0l;
915 SECUR32_CreateNTLMv2SubKeys(helper);
916 helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
917 helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
918 SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
919 helper->crypt.ntlm2.send_seal_key, 16);
920 SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
921 helper->crypt.ntlm2.recv_seal_key, 16);
922 helper->crypt.ntlm2.send_seq_no = 0l;
923 helper->crypt.ntlm2.recv_seq_no = 0l;
924 }
925
926isc_end:
927 HeapFree(GetProcessHeap(), 0, username);
928 HeapFree(GetProcessHeap(), 0, domain);
929 HeapFree(GetProcessHeap(), 0, password);
930 HeapFree(GetProcessHeap(), 0, want_flags);
931 HeapFree(GetProcessHeap(), 0, buffer);
932 HeapFree(GetProcessHeap(), 0, bin);
933 return ret;
934}
935
936/***********************************************************************
937 * InitializeSecurityContextA
938 */
939static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
940 PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
941 ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
942 PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
943 PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
944{
945 SECURITY_STATUS ret;
946 SEC_WCHAR *target = NULL;
947
948 TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
949 debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
950 Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
951
952 if(pszTargetName != NULL)
953 {
954 int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
955 strlen(pszTargetName)+1, NULL, 0);
956 target = HeapAlloc(GetProcessHeap(), 0, target_size *
957 sizeof(SEC_WCHAR));
958 MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
959 target, target_size);
960 }
961
962 ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
963 fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
964 phNewContext, pOutput, pfContextAttr, ptsExpiry);
965
966 HeapFree(GetProcessHeap(), 0, target);
967 return ret;
968}
969
970/***********************************************************************
971 * AcceptSecurityContext
972 */
973static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
974 PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
975 ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
976 PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
977{
978 SECURITY_STATUS ret;
979 char *buffer, *want_flags = NULL;
980 PBYTE bin;
981 int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
982 ULONG ctxt_attr = 0;
983 PNegoHelper helper;
984 PNtlmCredentials ntlm_cred;
985
986 TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
987 fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
988 ptsExpiry);
989
990 buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
991 bin = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
992
993 if(TargetDataRep == SECURITY_NETWORK_DREP){
994 TRACE("Using SECURITY_NETWORK_DREP\n");
995 }
996
997 if(phContext == NULL)
998 {
999 static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
1000 SEC_CHAR *server_argv[] = { ntlm_auth,
1001 server_helper_protocol,
1002 NULL };
1003
1004 if (!phCredential)
1005 {
1006 ret = SEC_E_INVALID_HANDLE;
1007 goto asc_end;
1008 }
1009
1010 ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1011
1012 if(ntlm_cred->mode != NTLM_SERVER)
1013 {
1014 ret = SEC_E_INVALID_HANDLE;
1015 goto asc_end;
1016 }
1017
1018 /* This is the first call to AcceptSecurityHandle */
1019 if(pInput == NULL)
1020 {
1021 ret = SEC_E_INCOMPLETE_MESSAGE;
1022 goto asc_end;
1023 }
1024
1025 if(pInput->cBuffers < 1)
1026 {
1027 ret = SEC_E_INCOMPLETE_MESSAGE;
1028 goto asc_end;
1029 }
1030
1031 if(pInput->pBuffers[0].cbBuffer > max_len)
1032 {
1033 ret = SEC_E_INVALID_TOKEN;
1034 goto asc_end;
1035 }
1036 else
1037 bin_len = pInput->pBuffers[0].cbBuffer;
1038
1039 if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1040 SEC_E_OK)
1041 {
1042 ret = SEC_E_INTERNAL_ERROR;
1043 goto asc_end;
1044 }
1045 helper->mode = NTLM_SERVER;
1046
1047 /* Handle all the flags */
1048 want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1049 if(want_flags == NULL)
1050 {
1051 TRACE("Failed to allocate memory for the want_flags!\n");
1052 ret = SEC_E_INSUFFICIENT_MEMORY;
1053 cleanup_helper(helper);
1054 goto asc_end;
1055 }
1056 lstrcpyA(want_flags, "SF");
1057 if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1058 {
1059 FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1060 }
1061 if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1062 {
1063 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1064 }
1065 if(fContextReq & ASC_REQ_CONNECTION)
1066 {
1067 /* This is default, so we'll enable it */
1068 lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1069 ctxt_attr |= ASC_RET_CONNECTION;
1070 }
1071 if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1072 {
1073 FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1074 }
1075 if(fContextReq & ASC_REQ_INTEGRITY)
1076 {
1077 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1078 }
1079 if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1080 {
1081 FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1082 }
1083 if(fContextReq & ASC_REQ_REPLAY_DETECT)
1084 {
1085 FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1086 }
1087 if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1088 {
1089 FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1090 }
1091 if(fContextReq & ISC_REQ_STREAM)
1092 {
1093 FIXME("ASC_REQ_STREAM stub\n");
1094 }
1095 /* Done with the flags */
1096
1097 if(lstrlenA(want_flags) > 3)
1098 {
1099 TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1100 lstrcpynA(buffer, want_flags, max_len - 1);
1101 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1102 SEC_E_OK)
1103 {
1104 cleanup_helper(helper);
1105 goto asc_end;
1106 }
1107 if(!strncmp(buffer, "BH", 2))
1108 TRACE("Helper doesn't understand new command set\n");
1109 }
1110
1111 /* This is the YR request from the client, encode to base64 */
1112
1113 memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1114
1115 lstrcpynA(buffer, "YR ", max_len-1);
1116
1117 if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1118 &buffer_len)) != SEC_E_OK)
1119 {
1120 cleanup_helper(helper);
1121 goto asc_end;
1122 }
1123
1124 TRACE("Client sent: %s\n", debugstr_a(buffer));
1125
1126 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1127 SEC_E_OK)
1128 {
1129 cleanup_helper(helper);
1130 goto asc_end;
1131 }
1132
1133 TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1134 /* The expected answer is TT <base64 blob> */
1135
1136 if(strncmp(buffer, "TT ", 3) != 0)
1137 {
1138 ret = SEC_E_INTERNAL_ERROR;
1139 cleanup_helper(helper);
1140 goto asc_end;
1141 }
1142
1143 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1144 &bin_len)) != SEC_E_OK)
1145 {
1146 cleanup_helper(helper);
1147 goto asc_end;
1148 }
1149
1150 /* send this to the client */
1151 if(pOutput == NULL)
1152 {
1153 ret = SEC_E_INSUFFICIENT_MEMORY;
1154 cleanup_helper(helper);
1155 goto asc_end;
1156 }
1157
1158 if(pOutput->cBuffers < 1)
1159 {
1160 ret = SEC_E_INSUFFICIENT_MEMORY;
1161 cleanup_helper(helper);
1162 goto asc_end;
1163 }
1164
1165 pOutput->pBuffers[0].cbBuffer = bin_len;
1166 pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1167 memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1168 ret = SEC_I_CONTINUE_NEEDED;
1169
1170 }
1171 else
1172 {
1173 /* we expect a KK request from client */
1174 if(pInput == NULL)
1175 {
1176 ret = SEC_E_INCOMPLETE_MESSAGE;
1177 goto asc_end;
1178 }
1179
1180 if(pInput->cBuffers < 1)
1181 {
1182 ret = SEC_E_INCOMPLETE_MESSAGE;
1183 goto asc_end;
1184 }
1185
1186 if(!phContext)
1187 {
1188 ret = SEC_E_INVALID_HANDLE;
1189 goto asc_end;
1190 }
1191
1192 helper = (PNegoHelper)phContext->dwLower;
1193
1194 if(helper->mode != NTLM_SERVER)
1195 {
1196 ret = SEC_E_INVALID_HANDLE;
1197 goto asc_end;
1198 }
1199
1200 if(pInput->pBuffers[0].cbBuffer > max_len)
1201 {
1202 ret = SEC_E_INVALID_TOKEN;
1203 goto asc_end;
1204 }
1205 else
1206 bin_len = pInput->pBuffers[0].cbBuffer;
1207
1208 memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1209
1210 lstrcpynA(buffer, "KK ", max_len-1);
1211
1212 if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1213 &buffer_len)) != SEC_E_OK)
1214 {
1215 goto asc_end;
1216 }
1217
1218 TRACE("Client sent: %s\n", debugstr_a(buffer));
1219
1220 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1221 SEC_E_OK)
1222 {
1223 goto asc_end;
1224 }
1225
1226 TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1227
1228 /* At this point, we get a NA if the user didn't authenticate, but a BH
1229 * if ntlm_auth could not connect to winbindd. Apart from running Wine
1230 * as root, there is no way to fix this for now, so just handle this as
1231 * a failed login. */
1232 if(strncmp(buffer, "AF ", 3) != 0)
1233 {
1234 if(strncmp(buffer, "NA ", 3) == 0)
1235 {
1236 ret = SEC_E_LOGON_DENIED;
1237 goto asc_end;
1238 }
1239 else
1240 {
1241 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1242
1243 if( (buffer_len >= ntlm_pipe_err_len) &&
1244 (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1245 ntlm_pipe_err_len) == 0))
1246 {
1247 TRACE("Connection to winbindd failed\n");
1248 ret = SEC_E_LOGON_DENIED;
1249 }
1250 else
1251 ret = SEC_E_INTERNAL_ERROR;
1252
1253 goto asc_end;
1254 }
1255 }
1256 pOutput->pBuffers[0].cbBuffer = 0;
1257 ret = SEC_E_OK;
1258
1259 TRACE("Getting negotiated flags\n");
1260 lstrcpynA(buffer, "GF", max_len - 1);
1261 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1262 goto asc_end;
1263
1264 if(buffer_len < 3)
1265 {
1266 TRACE("No flags negotiated, or helper does not support GF command\n");
1267 }
1268 else
1269 {
1270 TRACE("Negotiated %s\n", debugstr_a(buffer));
1271 sscanf(buffer + 3, "%lx", &(helper->neg_flags));
1272 TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
1273 }
1274
1275 TRACE("Getting session key\n");
1276 lstrcpynA(buffer, "GK", max_len - 1);
1277 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1278 goto asc_end;
1279
1280 if(buffer_len < 3)
1281 TRACE("Helper does not support GK command\n");
1282 else
1283 {
1284 if(strncmp(buffer, "BH ", 3) == 0)
1285 {
1286 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1287 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1288 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1289 memset(helper->session_key, 0 , 16);
1290 }
1291 else if(strncmp(buffer, "GK ", 3) == 0)
1292 {
1293 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1294 &bin_len)) != SEC_E_OK)
1295 {
1296 TRACE("Failed to decode session key\n");
1297 }
1298 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1299 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1300 if(!helper->session_key)
1301 {
1302 TRACE("Failed to allocate memory for session key\n");
1303 ret = SEC_E_INTERNAL_ERROR;
1304 goto asc_end;
1305 }
1306 memcpy(helper->session_key, bin, 16);
1307 }
1308 }
1309 helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1310 SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1311 helper->crypt.ntlm.seq_num = 0l;
1312 }
1313
1314 phNewContext->dwUpper = ctxt_attr;
1315 phNewContext->dwLower = (ULONG_PTR)helper;
1316
1317asc_end:
1318 HeapFree(GetProcessHeap(), 0, want_flags);
1319 HeapFree(GetProcessHeap(), 0, buffer);
1320 HeapFree(GetProcessHeap(), 0, bin);
1321 return ret;
1322}
1323
1324/***********************************************************************
1325 * CompleteAuthToken
1326 */
1327static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1328 PSecBufferDesc pToken)
1329{
1330 /* We never need to call CompleteAuthToken anyway */
1331 TRACE("%p %p\n", phContext, pToken);
1332 if (!phContext)
1333 return SEC_E_INVALID_HANDLE;
1334
1335 return SEC_E_OK;
1336}
1337
1338/***********************************************************************
1339 * DeleteSecurityContext
1340 */
1341static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1342{
1343 PNegoHelper helper;
1344
1345 TRACE("%p\n", phContext);
1346 if (!phContext)
1347 return SEC_E_INVALID_HANDLE;
1348
1349 helper = (PNegoHelper)phContext->dwLower;
1350
1351 phContext->dwUpper = 0;
1352 phContext->dwLower = 0;
1353
1354 SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1355 HeapFree(GetProcessHeap(), 0, helper->session_key);
1356 SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1357 SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1358 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1359 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1360 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1361 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1362
1363 cleanup_helper(helper);
1364
1365 return SEC_E_OK;
1366}
1367
1368/***********************************************************************
1369 * QueryContextAttributesW
1370 */
1371static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1372 ULONG ulAttribute, void *pBuffer)
1373{
1374 TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1375 if (!phContext)
1376 return SEC_E_INVALID_HANDLE;
1377
1378 switch(ulAttribute)
1379 {
1380#define _x(x) case (x) : FIXME(#x" stub\n"); break
1381 _x(SECPKG_ATTR_ACCESS_TOKEN);
1382 _x(SECPKG_ATTR_AUTHORITY);
1383 _x(SECPKG_ATTR_DCE_INFO);
1384 case SECPKG_ATTR_FLAGS:
1385 {
1386 PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1387 PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1388
1389 spcf->Flags = 0;
1390 if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1391 spcf->Flags |= ISC_RET_INTEGRITY;
1392 if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1393 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1394 return SEC_E_OK;
1395 }
1396 _x(SECPKG_ATTR_KEY_INFO);
1397 _x(SECPKG_ATTR_LIFESPAN);
1398 _x(SECPKG_ATTR_NAMES);
1399 _x(SECPKG_ATTR_NATIVE_NAMES);
1400 _x(SECPKG_ATTR_NEGOTIATION_INFO);
1401 _x(SECPKG_ATTR_PACKAGE_INFO);
1402 _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1403 _x(SECPKG_ATTR_SESSION_KEY);
1404 case SECPKG_ATTR_SIZES:
1405 {
1406 PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1407 spcs->cbMaxToken = NTLM_MAX_BUF;
1408 spcs->cbMaxSignature = 16;
1409 spcs->cbBlockSize = 0;
1410 spcs->cbSecurityTrailer = 16;
1411 return SEC_E_OK;
1412 }
1413 _x(SECPKG_ATTR_STREAM_SIZES);
1414 _x(SECPKG_ATTR_TARGET_INFORMATION);
1415#undef _x
1416 default:
1417 TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1418 }
1419
1420 return SEC_E_UNSUPPORTED_FUNCTION;
1421}
1422
1423/***********************************************************************
1424 * QueryContextAttributesA
1425 */
1426static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1427 ULONG ulAttribute, void *pBuffer)
1428{
1429 return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1430}
1431
1432/***********************************************************************
1433 * ImpersonateSecurityContext
1434 */
1435static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1436{
1437 SECURITY_STATUS ret;
1438
1439 TRACE("%p\n", phContext);
1440 if (phContext)
1441 {
1442 ret = SEC_E_UNSUPPORTED_FUNCTION;
1443 }
1444 else
1445 {
1446 ret = SEC_E_INVALID_HANDLE;
1447 }
1448 return ret;
1449}
1450
1451/***********************************************************************
1452 * RevertSecurityContext
1453 */
1454static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1455{
1456 SECURITY_STATUS ret;
1457
1458 TRACE("%p\n", phContext);
1459 if (phContext)
1460 {
1461 ret = SEC_E_UNSUPPORTED_FUNCTION;
1462 }
1463 else
1464 {
1465 ret = SEC_E_INVALID_HANDLE;
1466 }
1467 return ret;
1468}
1469
1470/***********************************************************************
1471 * ntlm_CreateSignature
1472 * As both MakeSignature and VerifySignature need this, but different keys
1473 * are needed for NTLMv2, the logic goes into a helper function.
1474 * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1475 * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1476 * the signature is encrypted after the message was encrypted, so
1477 * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1478 * false.
1479 */
1480static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1481 int token_idx, SignDirection direction, BOOL encrypt_sig)
1482{
1483 ULONG sign_version = 1;
1484 UINT i;
1485 PBYTE sig;
1486 TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1487 encrypt_sig);
1488
1489 sig = pMessage->pBuffers[token_idx].pvBuffer;
1490
1491 if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1492 helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1493 {
1494 BYTE digest[16];
1495 BYTE seq_no[4];
1496 HMAC_MD5_CTX hmac_md5_ctx;
1497
1498 TRACE("Signing NTLM2 style\n");
1499
1500 if(direction == NTLM_SEND)
1501 {
1502 seq_no[0] = (helper->crypt.ntlm2.send_seq_no >> 0) & 0xff;
1503 seq_no[1] = (helper->crypt.ntlm2.send_seq_no >> 8) & 0xff;
1504 seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1505 seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1506
1507 ++(helper->crypt.ntlm2.send_seq_no);
1508
1509 HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1510 }
1511 else
1512 {
1513 seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >> 0) & 0xff;
1514 seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >> 8) & 0xff;
1515 seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1516 seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1517
1518 ++(helper->crypt.ntlm2.recv_seq_no);
1519
1520 HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1521 }
1522
1523 HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1524 for( i = 0; i < pMessage->cBuffers; ++i )
1525 {
1526 if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1527 HMACMD5Update(&hmac_md5_ctx, (BYTE *)pMessage->pBuffers[i].pvBuffer,
1528 pMessage->pBuffers[i].cbBuffer);
1529 }
1530
1531 HMACMD5Final(&hmac_md5_ctx, digest);
1532
1533 if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1534 {
1535 if(direction == NTLM_SEND)
1536 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1537 else
1538 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1539 }
1540
1541 /* The NTLM2 signature is the sign version */
1542 sig[ 0] = (sign_version >> 0) & 0xff;
1543 sig[ 1] = (sign_version >> 8) & 0xff;
1544 sig[ 2] = (sign_version >> 16) & 0xff;
1545 sig[ 3] = (sign_version >> 24) & 0xff;
1546 /* The first 8 bytes of the digest */
1547 memcpy(sig+4, digest, 8);
1548 /* And the sequence number */
1549 memcpy(sig+12, seq_no, 4);
1550
1551 pMessage->pBuffers[token_idx].cbBuffer = 16;
1552
1553 return SEC_E_OK;
1554 }
1555 if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1556 {
1557 ULONG crc = 0U;
1558 TRACE("Signing NTLM1 style\n");
1559
1560 for(i=0; i < pMessage->cBuffers; ++i)
1561 {
1562 if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1563 {
1564 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1565 pMessage->pBuffers[i].cbBuffer, crc);
1566 }
1567 }
1568
1569 sig[ 0] = (sign_version >> 0) & 0xff;
1570 sig[ 1] = (sign_version >> 8) & 0xff;
1571 sig[ 2] = (sign_version >> 16) & 0xff;
1572 sig[ 3] = (sign_version >> 24) & 0xff;
1573 memset(sig+4, 0, 4);
1574 sig[ 8] = (crc >> 0) & 0xff;
1575 sig[ 9] = (crc >> 8) & 0xff;
1576 sig[10] = (crc >> 16) & 0xff;
1577 sig[11] = (crc >> 24) & 0xff;
1578 sig[12] = (helper->crypt.ntlm.seq_num >> 0) & 0xff;
1579 sig[13] = (helper->crypt.ntlm.seq_num >> 8) & 0xff;
1580 sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1581 sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1582
1583 ++(helper->crypt.ntlm.seq_num);
1584
1585 if(encrypt_sig)
1586 SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1587 return SEC_E_OK;
1588 }
1589
1590 if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1591 {
1592 TRACE("Creating a dummy signature.\n");
1593 /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1594 memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1595 memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1596 pMessage->pBuffers[token_idx].cbBuffer = 16;
1597 return SEC_E_OK;
1598 }
1599
1600 return SEC_E_UNSUPPORTED_FUNCTION;
1601}
1602
1603/***********************************************************************
1604 * MakeSignature
1605 */
1606static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1607 PSecBufferDesc pMessage, ULONG MessageSeqNo)
1608{
1609 PNegoHelper helper;
1610 int token_idx;
1611
1612 TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1613 if (!phContext)
1614 return SEC_E_INVALID_HANDLE;
1615
1616 if(fQOP)
1617 FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1618
1619 if(MessageSeqNo)
1620 FIXME("Ignoring MessageSeqNo\n");
1621
1622 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1623 return SEC_E_INVALID_TOKEN;
1624
1625 /* If we didn't find a SECBUFFER_TOKEN type buffer */
1626 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1627 return SEC_E_INVALID_TOKEN;
1628
1629 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1630 return SEC_E_BUFFER_TOO_SMALL;
1631
1632 helper = (PNegoHelper)phContext->dwLower;
1633 TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1634
1635 return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1636}
1637
1638/***********************************************************************
1639 * VerifySignature
1640 */
1641static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1642 PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1643{
1644 PNegoHelper helper;
1645 ULONG fQOP = 0;
1646 UINT i;
1647 int token_idx;
1648 SECURITY_STATUS ret;
1649 SecBufferDesc local_desc;
1650 PSecBuffer local_buff;
1651 BYTE local_sig[16];
1652
1653 TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1654 if(!phContext)
1655 return SEC_E_INVALID_HANDLE;
1656
1657 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1658 return SEC_E_INVALID_TOKEN;
1659
1660 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1661 return SEC_E_INVALID_TOKEN;
1662
1663 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1664 return SEC_E_BUFFER_TOO_SMALL;
1665
1666 if(MessageSeqNo)
1667 FIXME("Ignoring MessageSeqNo\n");
1668
1669 helper = (PNegoHelper)phContext->dwLower;
1670 TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1671
1672 local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1673
1674 local_desc.ulVersion = SECBUFFER_VERSION;
1675 local_desc.cBuffers = pMessage->cBuffers;
1676 local_desc.pBuffers = local_buff;
1677
1678 for(i=0; i < pMessage->cBuffers; ++i)
1679 {
1680 if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1681 {
1682 local_buff[i].BufferType = SECBUFFER_TOKEN;
1683 local_buff[i].cbBuffer = 16;
1684 local_buff[i].pvBuffer = local_sig;
1685 }
1686 else
1687 {
1688 local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1689 local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1690 local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1691 }
1692 }
1693
1694 if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1695 return ret;
1696
1697 if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1698 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1699 ret = SEC_E_MESSAGE_ALTERED;
1700 else
1701 ret = SEC_E_OK;
1702
1703 HeapFree(GetProcessHeap(), 0, local_buff);
1704 pfQOP = &fQOP;
1705
1706 return ret;
1707
1708}
1709
1710/***********************************************************************
1711 * FreeCredentialsHandle
1712 */
1713static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1714 PCredHandle phCredential)
1715{
1716 SECURITY_STATUS ret;
1717
1718 if(phCredential){
1719 PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1720 phCredential->dwUpper = 0;
1721 phCredential->dwLower = 0;
1722 if (ntlm_cred->password)
1723 memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1724 HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1725 HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1726 HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1727 ret = SEC_E_OK;
1728 }
1729 else
1730 ret = SEC_E_OK;
1731
1732 return ret;
1733}
1734
1735/***********************************************************************
1736 * EncryptMessage
1737 */
1738static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1739 ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1740{
1741 PNegoHelper helper;
1742 int token_idx, data_idx;
1743
1744 TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1745
1746 if(!phContext)
1747 return SEC_E_INVALID_HANDLE;
1748
1749 if(fQOP)
1750 FIXME("Ignoring fQOP\n");
1751
1752 if(MessageSeqNo)
1753 FIXME("Ignoring MessageSeqNo\n");
1754
1755 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1756 return SEC_E_INVALID_TOKEN;
1757
1758 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1759 return SEC_E_INVALID_TOKEN;
1760
1761 if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
1762 return SEC_E_INVALID_TOKEN;
1763
1764 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1765 return SEC_E_BUFFER_TOO_SMALL;
1766
1767 helper = (PNegoHelper) phContext->dwLower;
1768
1769 if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1770 helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1771 {
1772 ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1773 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1774 (BYTE *)pMessage->pBuffers[data_idx].pvBuffer,
1775 pMessage->pBuffers[data_idx].cbBuffer);
1776
1777 if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1778 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1779 ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1780
1781
1782 return SEC_E_OK;
1783 }
1784 else
1785 {
1786 PBYTE sig;
1787 ULONG save_flags;
1788
1789 /* EncryptMessage always produces real signatures, so make sure
1790 * NTLMSSP_NEGOTIATE_SIGN is set*/
1791 save_flags = helper->neg_flags;
1792 helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1793 ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1794 helper->neg_flags = save_flags;
1795
1796 sig = pMessage->pBuffers[token_idx].pvBuffer;
1797
1798 SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1799 pMessage->pBuffers[data_idx].pvBuffer,
1800 pMessage->pBuffers[data_idx].cbBuffer);
1801 SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1802
1803 if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1804 memset(sig+4, 0, 4);
1805
1806 }
1807
1808 return SEC_E_OK;
1809}
1810
1811/***********************************************************************
1812 * DecryptMessage
1813 */
1814static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1815 PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1816{
1817 SECURITY_STATUS ret;
1818 ULONG ntlmssp_flags_save;
1819 PNegoHelper helper;
1820 int token_idx, data_idx;
1821 TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1822
1823 if(!phContext)
1824 return SEC_E_INVALID_HANDLE;
1825
1826 if(MessageSeqNo)
1827 FIXME("Ignoring MessageSeqNo\n");
1828
1829 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1830 return SEC_E_INVALID_TOKEN;
1831
1832 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1833 return SEC_E_INVALID_TOKEN;
1834
1835 if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
1836 return SEC_E_INVALID_TOKEN;
1837
1838 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1839 return SEC_E_BUFFER_TOO_SMALL;
1840
1841 helper = (PNegoHelper) phContext->dwLower;
1842
1843 if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1844 {
1845 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1846 pMessage->pBuffers[data_idx].pvBuffer,
1847 pMessage->pBuffers[data_idx].cbBuffer);
1848 }
1849 else
1850 {
1851 SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1852 pMessage->pBuffers[data_idx].pvBuffer,
1853 pMessage->pBuffers[data_idx].cbBuffer);
1854 }
1855
1856 /* Make sure we use a session key for the signature check, EncryptMessage
1857 * always does that, even in the dummy case */
1858 ntlmssp_flags_save = helper->neg_flags;
1859
1860 helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1861 ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1862
1863 helper->neg_flags = ntlmssp_flags_save;
1864
1865 return ret;
1866}
1867
1868static const SecurityFunctionTableA ntlmTableA = {
1869 1,
1870 NULL, /* EnumerateSecurityPackagesA */
1871 ntlm_QueryCredentialsAttributesA, /* QueryCredentialsAttributesA */
1872 ntlm_AcquireCredentialsHandleA, /* AcquireCredentialsHandleA */
1873 ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
1874 NULL, /* Reserved2 */
1875 ntlm_InitializeSecurityContextA, /* InitializeSecurityContextA */
1876 ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
1877 ntlm_CompleteAuthToken, /* CompleteAuthToken */
1878 ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
1879 NULL, /* ApplyControlToken */
1880 ntlm_QueryContextAttributesA, /* QueryContextAttributesA */
1881 ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
1882 ntlm_RevertSecurityContext, /* RevertSecurityContext */
1883 ntlm_MakeSignature, /* MakeSignature */
1884 ntlm_VerifySignature, /* VerifySignature */
1885 FreeContextBuffer, /* FreeContextBuffer */
1886 NULL, /* QuerySecurityPackageInfoA */
1887 NULL, /* Reserved3 */
1888 NULL, /* Reserved4 */
1889 NULL, /* ExportSecurityContext */
1890 NULL, /* ImportSecurityContextA */
1891 NULL, /* AddCredentialsA */
1892 NULL, /* Reserved8 */
1893 NULL, /* QuerySecurityContextToken */
1894 ntlm_EncryptMessage, /* EncryptMessage */
1895 ntlm_DecryptMessage, /* DecryptMessage */
1896 NULL, /* SetContextAttributesA */
1897};
1898
1899static const SecurityFunctionTableW ntlmTableW = {
1900 1,
1901 NULL, /* EnumerateSecurityPackagesW */
1902 ntlm_QueryCredentialsAttributesW, /* QueryCredentialsAttributesW */
1903 ntlm_AcquireCredentialsHandleW, /* AcquireCredentialsHandleW */
1904 ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
1905 NULL, /* Reserved2 */
1906 ntlm_InitializeSecurityContextW, /* InitializeSecurityContextW */
1907 ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
1908 ntlm_CompleteAuthToken, /* CompleteAuthToken */
1909 ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
1910 NULL, /* ApplyControlToken */
1911 ntlm_QueryContextAttributesW, /* QueryContextAttributesW */
1912 ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
1913 ntlm_RevertSecurityContext, /* RevertSecurityContext */
1914 ntlm_MakeSignature, /* MakeSignature */
1915 ntlm_VerifySignature, /* VerifySignature */
1916 FreeContextBuffer, /* FreeContextBuffer */
1917 NULL, /* QuerySecurityPackageInfoW */
1918 NULL, /* Reserved3 */
1919 NULL, /* Reserved4 */
1920 NULL, /* ExportSecurityContext */
1921 NULL, /* ImportSecurityContextW */
1922 NULL, /* AddCredentialsW */
1923 NULL, /* Reserved8 */
1924 NULL, /* QuerySecurityContextToken */
1925 ntlm_EncryptMessage, /* EncryptMessage */
1926 ntlm_DecryptMessage, /* DecryptMessage */
1927 NULL, /* SetContextAttributesW */
1928};
1929
1930#define NTLM_COMMENT \
1931 { 'N', 'T', 'L', 'M', ' ', \
1932 'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1933 'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1934
1935static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1936static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1937
1938#define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1939
1940static char ntlm_name_A[] = NTLM_NAME;
1941static WCHAR ntlm_name_W[] = NTLM_NAME;
1942
1943/* According to Windows, NTLM has the following capabilities. */
1944#define CAPS ( \
1945 SECPKG_FLAG_INTEGRITY | \
1946 SECPKG_FLAG_PRIVACY | \
1947 SECPKG_FLAG_TOKEN_ONLY | \
1948 SECPKG_FLAG_CONNECTION | \
1949 SECPKG_FLAG_MULTI_REQUIRED | \
1950 SECPKG_FLAG_IMPERSONATION | \
1951 SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1952 SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1953
1954static const SecPkgInfoW infoW = {
1955 CAPS,
1956 1,
1957 RPC_C_AUTHN_WINNT,
1958 NTLM_MAX_BUF,
1959 ntlm_name_W,
1960 ntlm_comment_W
1961};
1962
1963static const SecPkgInfoA infoA = {
1964 CAPS,
1965 1,
1966 RPC_C_AUTHN_WINNT,
1967 NTLM_MAX_BUF,
1968 ntlm_name_A,
1969 ntlm_comment_A
1970};
1971
1972void SECUR32_initNTLMSP(void)
1973{
1974 PNegoHelper helper;
1975 static CHAR version[] = "--version";
1976
1977 SEC_CHAR *args[] = {
1978 ntlm_auth,
1979 version,
1980 NULL };
1981
1982 if(fork_helper(&helper, ntlm_auth, args) != SEC_E_OK)
1983 {
1984 /* Cheat and allocate a helper anyway, so cleanup later will work. */
1985 helper = HeapAlloc(GetProcessHeap(),0, sizeof(NegoHelper));
1986 helper->major = helper->minor = helper->micro = -1;
1987 }
1988 else
1989 check_version(helper);
1990
1991 if( (helper->major > MIN_NTLM_AUTH_MAJOR_VERSION) ||
1992 (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION &&
1993 helper->minor > MIN_NTLM_AUTH_MINOR_VERSION) ||
1994 (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION &&
1995 helper->minor == MIN_NTLM_AUTH_MINOR_VERSION &&
1996 helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
1997 {
1998 SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
1999 SECUR32_addPackages(provider, 1L, &infoA, &infoW);
2000 }
2001 else
2002 {
2003 ERR("%s was not found or is outdated. "
2004 "Make sure that ntlm_auth >= %d.%d.%d is in your path.\n",
2005 ntlm_auth,
2006 MIN_NTLM_AUTH_MAJOR_VERSION,
2007 MIN_NTLM_AUTH_MINOR_VERSION,
2008 MIN_NTLM_AUTH_MICRO_VERSION);
2009 ERR("Usually, you can find it in the winbind package of your "
2010 "distribution.\n");
2011
2012 }
2013 cleanup_helper(helper);
2014}
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