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push 73336d9f381967eae40f391d78198b916ed9848d
[wine/hacks.git] / dlls / secur32 / ntlm.c
blobf971fc1d4cd9ba82496eebefe6bf893aa7c20d69
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 "lm.h"
31 #include "secur32_priv.h"
32 #include "hmac_md5.h"
33 #include "wine/unicode.h"
34 #include "wine/debug.h"
35
36 WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
37
38 #define NTLM_MAX_BUF 1904
39 #define MIN_NTLM_AUTH_MAJOR_VERSION 3
40 #define MIN_NTLM_AUTH_MINOR_VERSION 0
41 #define MIN_NTLM_AUTH_MICRO_VERSION 25
42
43 static CHAR ntlm_auth[] = "ntlm_auth";
44
45 typedef struct _NtlmCredentials
46 {
47 HelperMode mode;
48
49 /* these are all in the Unix codepage */
50 char *username_arg;
51 char *domain_arg;
52 char *password; /* not nul-terminated */
53 int pwlen;
54 } NtlmCredentials, *PNtlmCredentials;
55
56 /***********************************************************************
57 * QueryCredentialsAttributesA
58 */
59 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
60 PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
61 {
62 SECURITY_STATUS ret;
63
64 TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
65
66 if(ulAttribute == SECPKG_ATTR_NAMES)
67 {
68 FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
69 ret = SEC_E_UNSUPPORTED_FUNCTION;
70 }
71 else
72 ret = SEC_E_UNSUPPORTED_FUNCTION;
73
74 return ret;
75 }
76
77 /***********************************************************************
78 * QueryCredentialsAttributesW
79 */
80 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
81 PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
82 {
83 SECURITY_STATUS ret;
84
85 TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
86
87 if(ulAttribute == SECPKG_ATTR_NAMES)
88 {
89 FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
90 ret = SEC_E_UNSUPPORTED_FUNCTION;
91 }
92 else
93 ret = SEC_E_UNSUPPORTED_FUNCTION;
94
95 return ret;
96 }
97
98 static char *ntlm_GetUsernameArg(LPCWSTR userW, INT userW_length)
99 {
100 static const char username_arg[] = "--username=";
101 char *user;
102 int unixcp_size;
103
104 unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
105 userW, userW_length, NULL, 0, NULL, NULL) + sizeof(username_arg);
106 user = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
107 if (!user) return NULL;
108 memcpy(user, username_arg, sizeof(username_arg) - 1);
109 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, userW, userW_length,
110 user + sizeof(username_arg) - 1,
111 unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
112 user[unixcp_size - 1] = '\0';
113 return user;
114 }
115
116 static char *ntlm_GetDomainArg(LPCWSTR domainW, INT domainW_length)
117 {
118 static const char domain_arg[] = "--domain=";
119 char *domain;
120 int unixcp_size;
121
122 unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
123 domainW, domainW_length, NULL, 0, NULL, NULL) + sizeof(domain_arg);
124 domain = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
125 if (!domain) return NULL;
126 memcpy(domain, domain_arg, sizeof(domain_arg) - 1);
127 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domainW,
128 domainW_length, domain + sizeof(domain_arg) - 1,
129 unixcp_size - sizeof(domain) + 1, NULL, NULL);
130 domain[unixcp_size - 1] = '\0';
131 return domain;
132 }
133
134 /***********************************************************************
135 * AcquireCredentialsHandleW
136 */
137 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
138 SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
139 PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
140 PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
141 {
142 SECURITY_STATUS ret;
143 PNtlmCredentials ntlm_cred = NULL;
144 SEC_WCHAR *username = NULL, *domain = NULL;
145
146 TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
147 debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
148 pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
149
150 switch(fCredentialUse)
151 {
152 case SECPKG_CRED_INBOUND:
153 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
154 if (!ntlm_cred)
155 ret = SEC_E_INSUFFICIENT_MEMORY;
156 else
157 {
158 ntlm_cred->mode = NTLM_SERVER;
159 ntlm_cred->username_arg = NULL;
160 ntlm_cred->domain_arg = NULL;
161 ntlm_cred->password = NULL;
162 ntlm_cred->pwlen = 0;
163 phCredential->dwUpper = fCredentialUse;
164 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
165 ret = SEC_E_OK;
166 }
167 break;
168 case SECPKG_CRED_OUTBOUND:
169 {
170 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
171 if (!ntlm_cred)
172 {
173 ret = SEC_E_INSUFFICIENT_MEMORY;
174 break;
175 }
176 ntlm_cred->mode = NTLM_CLIENT;
177 ntlm_cred->username_arg = NULL;
178 ntlm_cred->domain_arg = NULL;
179 ntlm_cred->password = NULL;
180 ntlm_cred->pwlen = 0;
181
182 if(pAuthData != NULL)
183 {
184 PSEC_WINNT_AUTH_IDENTITY_W auth_data =
185 (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
186
187 TRACE("Username is %s\n", debugstr_wn(auth_data->User, auth_data->UserLength));
188 TRACE("Domain name is %s\n", debugstr_wn(auth_data->Domain, auth_data->DomainLength));
189
190 ntlm_cred->username_arg = ntlm_GetUsernameArg(auth_data->User, auth_data->UserLength);
191 ntlm_cred->domain_arg = ntlm_GetDomainArg(auth_data->Domain, auth_data->DomainLength);
192
193 if(auth_data->PasswordLength != 0)
194 {
195 ntlm_cred->pwlen = WideCharToMultiByte(CP_UNIXCP,
196 WC_NO_BEST_FIT_CHARS, auth_data->Password,
197 auth_data->PasswordLength, NULL, 0, NULL,
198 NULL);
199
200 ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
201 ntlm_cred->pwlen);
202
203 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
204 auth_data->Password, auth_data->PasswordLength,
205 ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
206 }
207 }
208
209 phCredential->dwUpper = fCredentialUse;
210 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
211 TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
212 phCredential->dwUpper, phCredential->dwLower);
213 ret = SEC_E_OK;
214 break;
215 }
216 case SECPKG_CRED_BOTH:
217 FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
218 ret = SEC_E_UNSUPPORTED_FUNCTION;
219 phCredential = NULL;
220 break;
221 default:
222 phCredential = NULL;
223 ret = SEC_E_UNKNOWN_CREDENTIALS;
224 }
225
226 HeapFree(GetProcessHeap(), 0, username);
227 HeapFree(GetProcessHeap(), 0, domain);
228
229 return ret;
230 }
231
232 /***********************************************************************
233 * AcquireCredentialsHandleA
234 */
235 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
236 SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
237 PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
238 PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
239 {
240 SECURITY_STATUS ret;
241 int user_sizeW, domain_sizeW, passwd_sizeW;
242
243 SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
244
245 PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
246 PSEC_WINNT_AUTH_IDENTITY_A identity = NULL;
247
248 TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
249 debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
250 pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
251
252 if(pszPackage != NULL)
253 {
254 int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
255 NULL, 0);
256
257 package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
258 sizeof(SEC_WCHAR));
259 MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
260 }
261
262
263 if(pAuthData != NULL)
264 {
265 identity = (PSEC_WINNT_AUTH_IDENTITY_A)pAuthData;
266
267 if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
268 {
269 pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
270 sizeof(SEC_WINNT_AUTH_IDENTITY_W));
271
272 if(identity->UserLength != 0)
273 {
274 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
275 (LPCSTR)identity->User, identity->UserLength, NULL, 0);
276 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
277 sizeof(SEC_WCHAR));
278 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
279 identity->UserLength, user, user_sizeW);
280 }
281 else
282 {
283 user_sizeW = 0;
284 }
285
286 if(identity->DomainLength != 0)
287 {
288 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
289 (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
290 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
291 * sizeof(SEC_WCHAR));
292 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
293 identity->DomainLength, domain, domain_sizeW);
294 }
295 else
296 {
297 domain_sizeW = 0;
298 }
299
300 if(identity->PasswordLength != 0)
301 {
302 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
303 (LPCSTR)identity->Password, identity->PasswordLength,
304 NULL, 0);
305 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
306 * sizeof(SEC_WCHAR));
307 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
308 identity->PasswordLength, passwd, passwd_sizeW);
309 }
310 else
311 {
312 passwd_sizeW = 0;
313 }
314
315 pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
316 pAuthDataW->User = user;
317 pAuthDataW->UserLength = user_sizeW;
318 pAuthDataW->Domain = domain;
319 pAuthDataW->DomainLength = domain_sizeW;
320 pAuthDataW->Password = passwd;
321 pAuthDataW->PasswordLength = passwd_sizeW;
322 }
323 else
324 {
325 pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
326 }
327 }
328
329 ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
330 pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
331 ptsExpiry);
332
333 HeapFree(GetProcessHeap(), 0, package);
334 HeapFree(GetProcessHeap(), 0, user);
335 HeapFree(GetProcessHeap(), 0, domain);
336 HeapFree(GetProcessHeap(), 0, passwd);
337 if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
338 HeapFree(GetProcessHeap(), 0, pAuthDataW);
339
340 return ret;
341 }
342
343 /*************************************************************************
344 * ntlm_GetTokenBufferIndex
345 * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
346 * Returns index if found or -1 if not found.
347 */
348 static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
349 {
350 UINT i;
351
352 TRACE("%p\n", pMessage);
353
354 for( i = 0; i < pMessage->cBuffers; ++i )
355 {
356 if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
357 return i;
358 }
359
360 return -1;
361 }
362
363 /*************************************************************************
364 * ntlm_GetDataBufferIndex
365 * Calculates the index of the first secbuffer with BufferType == SECBUFFER_DATA
366 * Returns index if found or -1 if not found.
367 */
368 static int ntlm_GetDataBufferIndex(PSecBufferDesc pMessage)
369 {
370 UINT i;
371
372 TRACE("%p\n", pMessage);
373
374 for( i = 0; i < pMessage->cBuffers; ++i )
375 {
376 if(pMessage->pBuffers[i].BufferType == SECBUFFER_DATA)
377 return i;
378 }
379
380 return -1;
381 }
382
383 static BOOL ntlm_GetCachedCredential(const SEC_WCHAR *pszTargetName, PCREDENTIALW *cred)
384 {
385 LPCWSTR p;
386 LPCWSTR pszHost;
387 LPWSTR pszHostOnly;
388 BOOL ret;
389
390 if (!pszTargetName)
391 return FALSE;
392
393 /* try to get the start of the hostname from service principal name (SPN) */
394 pszHost = strchrW(pszTargetName, '/');
395 if (pszHost)
396 {
397 /* skip slash character */
398 pszHost++;
399
400 /* find end of host by detecting start of instance port or start of referrer */
401 p = strchrW(pszHost, ':');
402 if (!p)
403 p = strchrW(pszHost, '/');
404 if (!p)
405 p = pszHost + strlenW(pszHost);
406 }
407 else /* otherwise not an SPN, just a host */
408 {
409 pszHost = pszTargetName;
410 p = pszHost + strlenW(pszHost);
411 }
412
413 pszHostOnly = HeapAlloc(GetProcessHeap(), 0, (p - pszHost + 1) * sizeof(WCHAR));
414 if (!pszHostOnly)
415 return FALSE;
416
417 memcpy(pszHostOnly, pszHost, (p - pszHost) * sizeof(WCHAR));
418 pszHostOnly[p - pszHost] = '\0';
419
420 ret = CredReadW(pszHostOnly, CRED_TYPE_DOMAIN_PASSWORD, 0, cred);
421
422 HeapFree(GetProcessHeap(), 0, pszHostOnly);
423 return ret;
424 }
425
426 /***********************************************************************
427 * InitializeSecurityContextW
428 */
429 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
430 PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
431 ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
432 PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
433 PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
434 {
435 SECURITY_STATUS ret;
436 PNtlmCredentials ntlm_cred = NULL;
437 PNegoHelper helper = NULL;
438 ULONG ctxt_attr = 0;
439 char* buffer, *want_flags = NULL;
440 PBYTE bin;
441 int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
442 int token_idx;
443 SEC_CHAR *username = NULL;
444 SEC_CHAR *domain = NULL;
445 SEC_CHAR *password = NULL;
446
447 TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
448 debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
449 Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
450
451 /****************************************
452 * When communicating with the client, there can be the
453 * following reply packets:
454 * YR <base64 blob> should be sent to the server
455 * PW should be sent back to helper with
456 * base64 encoded password
457 * AF <base64 blob> client is done, blob should be
458 * sent to server with KK prefixed
459 * GF <string list> A string list of negotiated flags
460 * GK <base64 blob> base64 encoded session key
461 * BH <char reason> something broke
462 */
463 /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
464
465 if(TargetDataRep == SECURITY_NETWORK_DREP){
466 TRACE("Setting SECURITY_NETWORK_DREP\n");
467 }
468
469 buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
470 bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
471
472 if((phContext == NULL) && (pInput == NULL))
473 {
474 static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
475 static CHAR credentials_argv[] = "--use-cached-creds";
476 SEC_CHAR *client_argv[5];
477 int pwlen = 0;
478
479 TRACE("First time in ISC()\n");
480
481 if(!phCredential)
482 {
483 ret = SEC_E_INVALID_HANDLE;
484 goto isc_end;
485 }
486
487 /* As the server side of sspi never calls this, make sure that
488 * the handler is a client handler.
489 */
490 ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
491 if(ntlm_cred->mode != NTLM_CLIENT)
492 {
493 TRACE("Cred mode = %d\n", ntlm_cred->mode);
494 ret = SEC_E_INVALID_HANDLE;
495 goto isc_end;
496 }
497
498 client_argv[0] = ntlm_auth;
499 client_argv[1] = helper_protocol;
500 if (!ntlm_cred->username_arg && !ntlm_cred->domain_arg)
501 {
502 LPWKSTA_USER_INFO_1 ui = NULL;
503 NET_API_STATUS status;
504 PCREDENTIALW cred;
505
506 if (ntlm_GetCachedCredential(pszTargetName, &cred))
507 {
508 LPWSTR p;
509 p = strchrW(cred->UserName, '\\');
510 if (p)
511 {
512 domain = ntlm_GetDomainArg(cred->UserName, p - cred->UserName);
513 p++;
514 }
515 else
516 {
517 domain = ntlm_GetDomainArg(NULL, 0);
518 p = cred->UserName;
519 }
520
521 username = ntlm_GetUsernameArg(p, -1);
522
523 if(cred->CredentialBlobSize != 0)
524 {
525 pwlen = WideCharToMultiByte(CP_UNIXCP,
526 WC_NO_BEST_FIT_CHARS, (LPWSTR)cred->CredentialBlob,
527 cred->CredentialBlobSize / sizeof(WCHAR), NULL, 0,
528 NULL, NULL);
529
530 password = HeapAlloc(GetProcessHeap(), 0, pwlen);
531
532 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
533 (LPWSTR)cred->CredentialBlob,
534 cred->CredentialBlobSize / sizeof(WCHAR),
535 password, pwlen, NULL, NULL);
536 }
537
538 CredFree(cred);
539
540 client_argv[2] = username;
541 client_argv[3] = domain;
542 client_argv[4] = NULL;
543 }
544 else
545 {
546 status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
547 if (status != NERR_Success || ui == NULL)
548 {
549 ret = SEC_E_NO_CREDENTIALS;
550 goto isc_end;
551 }
552 username = ntlm_GetUsernameArg(ui->wkui1_username, -1);
553
554 TRACE("using cached credentials\n");
555
556 client_argv[2] = username;
557 client_argv[3] = credentials_argv;
558 client_argv[4] = NULL;
559 }
560 }
561 else
562 {
563 client_argv[2] = ntlm_cred->username_arg;
564 client_argv[3] = ntlm_cred->domain_arg;
565 client_argv[4] = NULL;
566 }
567
568 if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
569 goto isc_end;
570
571 helper->mode = NTLM_CLIENT;
572 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
573 if (!helper->session_key)
574 {
575 cleanup_helper(helper);
576 ret = SEC_E_INSUFFICIENT_MEMORY;
577 goto isc_end;
578 }
579
580 /* Generate the dummy session key = MD4(MD4(password))*/
581 if(password || ntlm_cred->password)
582 {
583 SEC_WCHAR *unicode_password;
584 int passwd_lenW;
585
586 TRACE("Converting password to unicode.\n");
587 passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
588 password ? (LPCSTR)password : (LPCSTR)ntlm_cred->password,
589 password ? pwlen : ntlm_cred->pwlen,
590 NULL, 0);
591 unicode_password = HeapAlloc(GetProcessHeap(), 0,
592 passwd_lenW * sizeof(SEC_WCHAR));
593 MultiByteToWideChar(CP_ACP, 0, password ? (LPCSTR)password : (LPCSTR)ntlm_cred->password,
594 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
595
596 SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
597 passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
598
599 HeapFree(GetProcessHeap(), 0, unicode_password);
600 }
601 else
602 memset(helper->session_key, 0, 16);
603
604 /* Allocate space for a maximal string of
605 * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
606 * NTLMSSP_FEATURE_SESSION_KEY"
607 */
608 want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
609 if(want_flags == NULL)
610 {
611 cleanup_helper(helper);
612 ret = SEC_E_INSUFFICIENT_MEMORY;
613 goto isc_end;
614 }
615 lstrcpyA(want_flags, "SF");
616 if(fContextReq & ISC_REQ_CONFIDENTIALITY)
617 {
618 char *ptr;
619 if((ptr = 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 char *ptr;
629 if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
630 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
631 }
632 if(fContextReq & ISC_REQ_MUTUAL_AUTH)
633 ctxt_attr |= ISC_RET_MUTUAL_AUTH;
634 if(fContextReq & ISC_REQ_REPLAY_DETECT)
635 {
636 char *ptr;
637 if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
638 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
639 }
640 if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
641 {
642 char *ptr;
643 if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
644 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
645 }
646 if(fContextReq & ISC_REQ_STREAM)
647 FIXME("ISC_REQ_STREAM\n");
648 if(fContextReq & ISC_REQ_USE_DCE_STYLE)
649 ctxt_attr |= ISC_RET_USED_DCE_STYLE;
650 if(fContextReq & ISC_REQ_DELEGATE)
651 ctxt_attr |= ISC_RET_DELEGATE;
652
653 /* If no password is given, try to use cached credentials. Fall back to an empty
654 * password if this failed. */
655 if(!password && !ntlm_cred->password)
656 {
657 lstrcpynA(buffer, "OK", max_len-1);
658 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
659 {
660 cleanup_helper(helper);
661 goto isc_end;
662 }
663 /* If the helper replied with "PW", using cached credentials failed */
664 if(!strncmp(buffer, "PW", 2))
665 {
666 TRACE("Using cached credentials failed.\n");
667 ret = SEC_E_NO_CREDENTIALS;
668 goto isc_end;
669 }
670 else /* Just do a noop on the next run */
671 lstrcpynA(buffer, "OK", max_len-1);
672 }
673 else
674 {
675 lstrcpynA(buffer, "PW ", max_len-1);
676 if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
677 password ? pwlen : ntlm_cred->pwlen, buffer+3,
678 max_len-3, &buffer_len)) != SEC_E_OK)
679 {
680 cleanup_helper(helper);
681 goto isc_end;
682 }
683
684 }
685
686 TRACE("Sending to helper: %s\n", debugstr_a(buffer));
687 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
688 {
689 cleanup_helper(helper);
690 goto isc_end;
691 }
692
693 TRACE("Helper returned %s\n", debugstr_a(buffer));
694
695 if(lstrlenA(want_flags) > 2)
696 {
697 TRACE("Want flags are %s\n", debugstr_a(want_flags));
698 lstrcpynA(buffer, want_flags, max_len-1);
699 if((ret = run_helper(helper, buffer, max_len, &buffer_len))
700 != SEC_E_OK)
701 goto isc_end;
702 if(!strncmp(buffer, "BH", 2))
703 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
704 }
705
706 lstrcpynA(buffer, "YR", max_len-1);
707
708 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
709 {
710 cleanup_helper(helper);
711 goto isc_end;
712 }
713
714 TRACE("%s\n", buffer);
715
716 if(strncmp(buffer, "YR ", 3) != 0)
717 {
718 /* Something borked */
719 TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
720 ret = SEC_E_INTERNAL_ERROR;
721 cleanup_helper(helper);
722 goto isc_end;
723 }
724 if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
725 max_len-1, &bin_len)) != SEC_E_OK)
726 {
727 cleanup_helper(helper);
728 goto isc_end;
729 }
730
731 /* put the decoded client blob into the out buffer */
732
733 phNewContext->dwUpper = ctxt_attr;
734 phNewContext->dwLower = (ULONG_PTR)helper;
735
736 ret = SEC_I_CONTINUE_NEEDED;
737 }
738 else
739 {
740 int input_token_idx;
741
742 /* handle second call here */
743 /* encode server data to base64 */
744 if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
745 {
746 ret = SEC_E_INVALID_TOKEN;
747 goto isc_end;
748 }
749
750 if(!phContext)
751 {
752 ret = SEC_E_INVALID_HANDLE;
753 goto isc_end;
754 }
755
756 /* As the server side of sspi never calls this, make sure that
757 * the handler is a client handler.
758 */
759 helper = (PNegoHelper)phContext->dwLower;
760 if(helper->mode != NTLM_CLIENT)
761 {
762 TRACE("Helper mode = %d\n", helper->mode);
763 ret = SEC_E_INVALID_HANDLE;
764 goto isc_end;
765 }
766
767 if (!pInput->pBuffers[input_token_idx].pvBuffer)
768 {
769 ret = SEC_E_INTERNAL_ERROR;
770 goto isc_end;
771 }
772
773 if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
774 {
775 TRACE("pInput->pBuffers[%d].cbBuffer is: %ld\n",
776 input_token_idx,
777 pInput->pBuffers[input_token_idx].cbBuffer);
778 ret = SEC_E_INVALID_TOKEN;
779 goto isc_end;
780 }
781 else
782 bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
783
784 memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
785
786 lstrcpynA(buffer, "TT ", max_len-1);
787
788 if((ret = encodeBase64(bin, bin_len, buffer+3,
789 max_len-3, &buffer_len)) != SEC_E_OK)
790 goto isc_end;
791
792 TRACE("Server sent: %s\n", debugstr_a(buffer));
793
794 /* send TT base64 blob to ntlm_auth */
795 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
796 goto isc_end;
797
798 TRACE("Helper replied: %s\n", debugstr_a(buffer));
799
800 if( (strncmp(buffer, "KK ", 3) != 0) &&
801 (strncmp(buffer, "AF ", 3) !=0))
802 {
803 TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
804 ret = SEC_E_INVALID_TOKEN;
805 goto isc_end;
806 }
807
808 /* decode the blob and send it to server */
809 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
810 &bin_len)) != SEC_E_OK)
811 {
812 goto isc_end;
813 }
814
815 phNewContext->dwUpper = ctxt_attr;
816 phNewContext->dwLower = (ULONG_PTR)helper;
817
818 ret = SEC_E_OK;
819 }
820
821 /* put the decoded client blob into the out buffer */
822
823 if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
824 {
825 TRACE("no SECBUFFER_TOKEN buffer could be found\n");
826 ret = SEC_E_BUFFER_TOO_SMALL;
827 if ((phContext == NULL) && (pInput == NULL))
828 {
829 cleanup_helper(helper);
830 phNewContext->dwUpper = 0;
831 phNewContext->dwLower = 0;
832 }
833 goto isc_end;
834 }
835
836 if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
837 {
838 pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
839 pOutput->pBuffers[token_idx].cbBuffer = bin_len;
840 }
841 else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
842 {
843 TRACE("out buffer is NULL or has not enough space\n");
844 ret = SEC_E_BUFFER_TOO_SMALL;
845 if ((phContext == NULL) && (pInput == NULL))
846 {
847 cleanup_helper(helper);
848 phNewContext->dwUpper = 0;
849 phNewContext->dwLower = 0;
850 }
851 goto isc_end;
852 }
853
854 if (!pOutput->pBuffers[token_idx].pvBuffer)
855 {
856 TRACE("out buffer is NULL\n");
857 ret = SEC_E_INTERNAL_ERROR;
858 if ((phContext == NULL) && (pInput == NULL))
859 {
860 cleanup_helper(helper);
861 phNewContext->dwUpper = 0;
862 phNewContext->dwLower = 0;
863 }
864 goto isc_end;
865 }
866
867 pOutput->pBuffers[token_idx].cbBuffer = bin_len;
868 memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
869
870 if(ret == SEC_E_OK)
871 {
872 TRACE("Getting negotiated flags\n");
873 lstrcpynA(buffer, "GF", max_len - 1);
874 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
875 goto isc_end;
876
877 if(buffer_len < 3)
878 {
879 TRACE("No flags negotiated.\n");
880 helper->neg_flags = 0l;
881 }
882 else
883 {
884 TRACE("Negotiated %s\n", debugstr_a(buffer));
885 sscanf(buffer + 3, "%lx", &(helper->neg_flags));
886 TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
887 }
888
889 TRACE("Getting session key\n");
890 lstrcpynA(buffer, "GK", max_len - 1);
891 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
892 goto isc_end;
893
894 if(strncmp(buffer, "BH", 2) == 0)
895 TRACE("No key negotiated.\n");
896 else if(strncmp(buffer, "GK ", 3) == 0)
897 {
898 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
899 &bin_len)) != SEC_E_OK)
900 {
901 TRACE("Failed to decode session key\n");
902 }
903 TRACE("Session key is %s\n", debugstr_a(buffer+3));
904 HeapFree(GetProcessHeap(), 0, helper->session_key);
905 helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
906 if(!helper->session_key)
907 {
908 TRACE("Failed to allocate memory for session key\n");
909 ret = SEC_E_INTERNAL_ERROR;
910 goto isc_end;
911 }
912 memcpy(helper->session_key, bin, bin_len);
913 }
914
915 helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
916 SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
917 helper->crypt.ntlm.seq_num = 0l;
918 SECUR32_CreateNTLMv2SubKeys(helper);
919 helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
920 helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
921 SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
922 helper->crypt.ntlm2.send_seal_key, 16);
923 SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
924 helper->crypt.ntlm2.recv_seal_key, 16);
925 helper->crypt.ntlm2.send_seq_no = 0l;
926 helper->crypt.ntlm2.recv_seq_no = 0l;
927 }
928
929 isc_end:
930 HeapFree(GetProcessHeap(), 0, username);
931 HeapFree(GetProcessHeap(), 0, domain);
932 HeapFree(GetProcessHeap(), 0, password);
933 HeapFree(GetProcessHeap(), 0, want_flags);
934 HeapFree(GetProcessHeap(), 0, buffer);
935 HeapFree(GetProcessHeap(), 0, bin);
936 return ret;
937 }
938
939 /***********************************************************************
940 * InitializeSecurityContextA
941 */
942 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
943 PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
944 ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
945 PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
946 PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
947 {
948 SECURITY_STATUS ret;
949 SEC_WCHAR *target = NULL;
950
951 TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
952 debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
953 Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
954
955 if(pszTargetName != NULL)
956 {
957 int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
958 strlen(pszTargetName)+1, NULL, 0);
959 target = HeapAlloc(GetProcessHeap(), 0, target_size *
960 sizeof(SEC_WCHAR));
961 MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
962 target, target_size);
963 }
964
965 ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
966 fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
967 phNewContext, pOutput, pfContextAttr, ptsExpiry);
968
969 HeapFree(GetProcessHeap(), 0, target);
970 return ret;
971 }
972
973 /***********************************************************************
974 * AcceptSecurityContext
975 */
976 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
977 PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
978 ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
979 PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
980 {
981 SECURITY_STATUS ret;
982 char *buffer, *want_flags = NULL;
983 PBYTE bin;
984 int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
985 ULONG ctxt_attr = 0;
986 PNegoHelper helper;
987 PNtlmCredentials ntlm_cred;
988
989 TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
990 fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
991 ptsExpiry);
992
993 buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
994 bin = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
995
996 if(TargetDataRep == SECURITY_NETWORK_DREP){
997 TRACE("Using SECURITY_NETWORK_DREP\n");
998 }
999
1000 if(phContext == NULL)
1001 {
1002 static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
1003 SEC_CHAR *server_argv[] = { ntlm_auth,
1004 server_helper_protocol,
1005 NULL };
1006
1007 if (!phCredential)
1008 {
1009 ret = SEC_E_INVALID_HANDLE;
1010 goto asc_end;
1011 }
1012
1013 ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1014
1015 if(ntlm_cred->mode != NTLM_SERVER)
1016 {
1017 ret = SEC_E_INVALID_HANDLE;
1018 goto asc_end;
1019 }
1020
1021 /* This is the first call to AcceptSecurityHandle */
1022 if(pInput == NULL)
1023 {
1024 ret = SEC_E_INCOMPLETE_MESSAGE;
1025 goto asc_end;
1026 }
1027
1028 if(pInput->cBuffers < 1)
1029 {
1030 ret = SEC_E_INCOMPLETE_MESSAGE;
1031 goto asc_end;
1032 }
1033
1034 if(pInput->pBuffers[0].cbBuffer > max_len)
1035 {
1036 ret = SEC_E_INVALID_TOKEN;
1037 goto asc_end;
1038 }
1039 else
1040 bin_len = pInput->pBuffers[0].cbBuffer;
1041
1042 if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1043 SEC_E_OK)
1044 {
1045 ret = SEC_E_INTERNAL_ERROR;
1046 goto asc_end;
1047 }
1048 helper->mode = NTLM_SERVER;
1049
1050 /* Handle all the flags */
1051 want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1052 if(want_flags == NULL)
1053 {
1054 TRACE("Failed to allocate memory for the want_flags!\n");
1055 ret = SEC_E_INSUFFICIENT_MEMORY;
1056 cleanup_helper(helper);
1057 goto asc_end;
1058 }
1059 lstrcpyA(want_flags, "SF");
1060 if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1061 {
1062 FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1063 }
1064 if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1065 {
1066 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1067 }
1068 if(fContextReq & ASC_REQ_CONNECTION)
1069 {
1070 /* This is default, so we'll enable it */
1071 lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1072 ctxt_attr |= ASC_RET_CONNECTION;
1073 }
1074 if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1075 {
1076 FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1077 }
1078 if(fContextReq & ASC_REQ_INTEGRITY)
1079 {
1080 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1081 }
1082 if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1083 {
1084 FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1085 }
1086 if(fContextReq & ASC_REQ_REPLAY_DETECT)
1087 {
1088 FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1089 }
1090 if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1091 {
1092 FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1093 }
1094 if(fContextReq & ISC_REQ_STREAM)
1095 {
1096 FIXME("ASC_REQ_STREAM stub\n");
1097 }
1098 /* Done with the flags */
1099
1100 if(lstrlenA(want_flags) > 3)
1101 {
1102 TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1103 lstrcpynA(buffer, want_flags, max_len - 1);
1104 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1105 SEC_E_OK)
1106 {
1107 cleanup_helper(helper);
1108 goto asc_end;
1109 }
1110 if(!strncmp(buffer, "BH", 2))
1111 TRACE("Helper doesn't understand new command set\n");
1112 }
1113
1114 /* This is the YR request from the client, encode to base64 */
1115
1116 memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1117
1118 lstrcpynA(buffer, "YR ", max_len-1);
1119
1120 if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1121 &buffer_len)) != SEC_E_OK)
1122 {
1123 cleanup_helper(helper);
1124 goto asc_end;
1125 }
1126
1127 TRACE("Client sent: %s\n", debugstr_a(buffer));
1128
1129 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1130 SEC_E_OK)
1131 {
1132 cleanup_helper(helper);
1133 goto asc_end;
1134 }
1135
1136 TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1137 /* The expected answer is TT <base64 blob> */
1138
1139 if(strncmp(buffer, "TT ", 3) != 0)
1140 {
1141 ret = SEC_E_INTERNAL_ERROR;
1142 cleanup_helper(helper);
1143 goto asc_end;
1144 }
1145
1146 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1147 &bin_len)) != SEC_E_OK)
1148 {
1149 cleanup_helper(helper);
1150 goto asc_end;
1151 }
1152
1153 /* send this to the client */
1154 if(pOutput == NULL)
1155 {
1156 ret = SEC_E_INSUFFICIENT_MEMORY;
1157 cleanup_helper(helper);
1158 goto asc_end;
1159 }
1160
1161 if(pOutput->cBuffers < 1)
1162 {
1163 ret = SEC_E_INSUFFICIENT_MEMORY;
1164 cleanup_helper(helper);
1165 goto asc_end;
1166 }
1167
1168 pOutput->pBuffers[0].cbBuffer = bin_len;
1169 pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1170 memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1171 ret = SEC_I_CONTINUE_NEEDED;
1172
1173 }
1174 else
1175 {
1176 /* we expect a KK request from client */
1177 if(pInput == NULL)
1178 {
1179 ret = SEC_E_INCOMPLETE_MESSAGE;
1180 goto asc_end;
1181 }
1182
1183 if(pInput->cBuffers < 1)
1184 {
1185 ret = SEC_E_INCOMPLETE_MESSAGE;
1186 goto asc_end;
1187 }
1188
1189 if(!phContext)
1190 {
1191 ret = SEC_E_INVALID_HANDLE;
1192 goto asc_end;
1193 }
1194
1195 helper = (PNegoHelper)phContext->dwLower;
1196
1197 if(helper->mode != NTLM_SERVER)
1198 {
1199 ret = SEC_E_INVALID_HANDLE;
1200 goto asc_end;
1201 }
1202
1203 if(pInput->pBuffers[0].cbBuffer > max_len)
1204 {
1205 ret = SEC_E_INVALID_TOKEN;
1206 goto asc_end;
1207 }
1208 else
1209 bin_len = pInput->pBuffers[0].cbBuffer;
1210
1211 memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1212
1213 lstrcpynA(buffer, "KK ", max_len-1);
1214
1215 if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1216 &buffer_len)) != SEC_E_OK)
1217 {
1218 goto asc_end;
1219 }
1220
1221 TRACE("Client sent: %s\n", debugstr_a(buffer));
1222
1223 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1224 SEC_E_OK)
1225 {
1226 goto asc_end;
1227 }
1228
1229 TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1230
1231 /* At this point, we get a NA if the user didn't authenticate, but a BH
1232 * if ntlm_auth could not connect to winbindd. Apart from running Wine
1233 * as root, there is no way to fix this for now, so just handle this as
1234 * a failed login. */
1235 if(strncmp(buffer, "AF ", 3) != 0)
1236 {
1237 if(strncmp(buffer, "NA ", 3) == 0)
1238 {
1239 ret = SEC_E_LOGON_DENIED;
1240 goto asc_end;
1241 }
1242 else
1243 {
1244 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1245
1246 if( (buffer_len >= ntlm_pipe_err_len) &&
1247 (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1248 ntlm_pipe_err_len) == 0))
1249 {
1250 TRACE("Connection to winbindd failed\n");
1251 ret = SEC_E_LOGON_DENIED;
1252 }
1253 else
1254 ret = SEC_E_INTERNAL_ERROR;
1255
1256 goto asc_end;
1257 }
1258 }
1259 pOutput->pBuffers[0].cbBuffer = 0;
1260 ret = SEC_E_OK;
1261
1262 TRACE("Getting negotiated flags\n");
1263 lstrcpynA(buffer, "GF", max_len - 1);
1264 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1265 goto asc_end;
1266
1267 if(buffer_len < 3)
1268 {
1269 TRACE("No flags negotiated, or helper does not support GF command\n");
1270 }
1271 else
1272 {
1273 TRACE("Negotiated %s\n", debugstr_a(buffer));
1274 sscanf(buffer + 3, "%lx", &(helper->neg_flags));
1275 TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
1276 }
1277
1278 TRACE("Getting session key\n");
1279 lstrcpynA(buffer, "GK", max_len - 1);
1280 if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1281 goto asc_end;
1282
1283 if(buffer_len < 3)
1284 TRACE("Helper does not support GK command\n");
1285 else
1286 {
1287 if(strncmp(buffer, "BH ", 3) == 0)
1288 {
1289 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1290 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1291 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1292 memset(helper->session_key, 0 , 16);
1293 }
1294 else if(strncmp(buffer, "GK ", 3) == 0)
1295 {
1296 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1297 &bin_len)) != SEC_E_OK)
1298 {
1299 TRACE("Failed to decode session key\n");
1300 }
1301 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1302 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1303 if(!helper->session_key)
1304 {
1305 TRACE("Failed to allocate memory for session key\n");
1306 ret = SEC_E_INTERNAL_ERROR;
1307 goto asc_end;
1308 }
1309 memcpy(helper->session_key, bin, 16);
1310 }
1311 }
1312 helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1313 SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1314 helper->crypt.ntlm.seq_num = 0l;
1315 }
1316
1317 phNewContext->dwUpper = ctxt_attr;
1318 phNewContext->dwLower = (ULONG_PTR)helper;
1319
1320 asc_end:
1321 HeapFree(GetProcessHeap(), 0, want_flags);
1322 HeapFree(GetProcessHeap(), 0, buffer);
1323 HeapFree(GetProcessHeap(), 0, bin);
1324 return ret;
1325 }
1326
1327 /***********************************************************************
1328 * CompleteAuthToken
1329 */
1330 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1331 PSecBufferDesc pToken)
1332 {
1333 /* We never need to call CompleteAuthToken anyway */
1334 TRACE("%p %p\n", phContext, pToken);
1335 if (!phContext)
1336 return SEC_E_INVALID_HANDLE;
1337
1338 return SEC_E_OK;
1339 }
1340
1341 /***********************************************************************
1342 * DeleteSecurityContext
1343 */
1344 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1345 {
1346 PNegoHelper helper;
1347
1348 TRACE("%p\n", phContext);
1349 if (!phContext)
1350 return SEC_E_INVALID_HANDLE;
1351
1352 helper = (PNegoHelper)phContext->dwLower;
1353
1354 phContext->dwUpper = 0;
1355 phContext->dwLower = 0;
1356
1357 SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1358 HeapFree(GetProcessHeap(), 0, helper->session_key);
1359 SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1360 SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1361 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1362 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1363 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1364 HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1365
1366 cleanup_helper(helper);
1367
1368 return SEC_E_OK;
1369 }
1370
1371 /***********************************************************************
1372 * QueryContextAttributesW
1373 */
1374 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1375 ULONG ulAttribute, void *pBuffer)
1376 {
1377 TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1378 if (!phContext)
1379 return SEC_E_INVALID_HANDLE;
1380
1381 switch(ulAttribute)
1382 {
1383 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1384 _x(SECPKG_ATTR_ACCESS_TOKEN);
1385 _x(SECPKG_ATTR_AUTHORITY);
1386 _x(SECPKG_ATTR_DCE_INFO);
1387 case SECPKG_ATTR_FLAGS:
1388 {
1389 PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1390 PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1391
1392 spcf->Flags = 0;
1393 if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1394 spcf->Flags |= ISC_RET_INTEGRITY;
1395 if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1396 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1397 return SEC_E_OK;
1398 }
1399 _x(SECPKG_ATTR_KEY_INFO);
1400 _x(SECPKG_ATTR_LIFESPAN);
1401 _x(SECPKG_ATTR_NAMES);
1402 _x(SECPKG_ATTR_NATIVE_NAMES);
1403 _x(SECPKG_ATTR_NEGOTIATION_INFO);
1404 _x(SECPKG_ATTR_PACKAGE_INFO);
1405 _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1406 _x(SECPKG_ATTR_SESSION_KEY);
1407 case SECPKG_ATTR_SIZES:
1408 {
1409 PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1410 spcs->cbMaxToken = NTLM_MAX_BUF;
1411 spcs->cbMaxSignature = 16;
1412 spcs->cbBlockSize = 0;
1413 spcs->cbSecurityTrailer = 16;
1414 return SEC_E_OK;
1415 }
1416 _x(SECPKG_ATTR_STREAM_SIZES);
1417 _x(SECPKG_ATTR_TARGET_INFORMATION);
1418 #undef _x
1419 default:
1420 TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1421 }
1422
1423 return SEC_E_UNSUPPORTED_FUNCTION;
1424 }
1425
1426 /***********************************************************************
1427 * QueryContextAttributesA
1428 */
1429 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1430 ULONG ulAttribute, void *pBuffer)
1431 {
1432 return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1433 }
1434
1435 /***********************************************************************
1436 * ImpersonateSecurityContext
1437 */
1438 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1439 {
1440 SECURITY_STATUS ret;
1441
1442 TRACE("%p\n", phContext);
1443 if (phContext)
1444 {
1445 ret = SEC_E_UNSUPPORTED_FUNCTION;
1446 }
1447 else
1448 {
1449 ret = SEC_E_INVALID_HANDLE;
1450 }
1451 return ret;
1452 }
1453
1454 /***********************************************************************
1455 * RevertSecurityContext
1456 */
1457 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1458 {
1459 SECURITY_STATUS ret;
1460
1461 TRACE("%p\n", phContext);
1462 if (phContext)
1463 {
1464 ret = SEC_E_UNSUPPORTED_FUNCTION;
1465 }
1466 else
1467 {
1468 ret = SEC_E_INVALID_HANDLE;
1469 }
1470 return ret;
1471 }
1472
1473 /***********************************************************************
1474 * ntlm_CreateSignature
1475 * As both MakeSignature and VerifySignature need this, but different keys
1476 * are needed for NTLMv2, the logic goes into a helper function.
1477 * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1478 * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1479 * the signature is encrypted after the message was encrypted, so
1480 * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1481 * false.
1482 */
1483 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1484 int token_idx, SignDirection direction, BOOL encrypt_sig)
1485 {
1486 ULONG sign_version = 1;
1487 UINT i;
1488 PBYTE sig;
1489 TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1490 encrypt_sig);
1491
1492 sig = pMessage->pBuffers[token_idx].pvBuffer;
1493
1494 if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1495 helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1496 {
1497 BYTE digest[16];
1498 BYTE seq_no[4];
1499 HMAC_MD5_CTX hmac_md5_ctx;
1500
1501 TRACE("Signing NTLM2 style\n");
1502
1503 if(direction == NTLM_SEND)
1504 {
1505 seq_no[0] = (helper->crypt.ntlm2.send_seq_no >> 0) & 0xff;
1506 seq_no[1] = (helper->crypt.ntlm2.send_seq_no >> 8) & 0xff;
1507 seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1508 seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1509
1510 ++(helper->crypt.ntlm2.send_seq_no);
1511
1512 HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1513 }
1514 else
1515 {
1516 seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >> 0) & 0xff;
1517 seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >> 8) & 0xff;
1518 seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1519 seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1520
1521 ++(helper->crypt.ntlm2.recv_seq_no);
1522
1523 HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1524 }
1525
1526 HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1527 for( i = 0; i < pMessage->cBuffers; ++i )
1528 {
1529 if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1530 HMACMD5Update(&hmac_md5_ctx, (BYTE *)pMessage->pBuffers[i].pvBuffer,
1531 pMessage->pBuffers[i].cbBuffer);
1532 }
1533
1534 HMACMD5Final(&hmac_md5_ctx, digest);
1535
1536 if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1537 {
1538 if(direction == NTLM_SEND)
1539 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1540 else
1541 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1542 }
1543
1544 /* The NTLM2 signature is the sign version */
1545 sig[ 0] = (sign_version >> 0) & 0xff;
1546 sig[ 1] = (sign_version >> 8) & 0xff;
1547 sig[ 2] = (sign_version >> 16) & 0xff;
1548 sig[ 3] = (sign_version >> 24) & 0xff;
1549 /* The first 8 bytes of the digest */
1550 memcpy(sig+4, digest, 8);
1551 /* And the sequence number */
1552 memcpy(sig+12, seq_no, 4);
1553
1554 pMessage->pBuffers[token_idx].cbBuffer = 16;
1555
1556 return SEC_E_OK;
1557 }
1558 if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1559 {
1560 ULONG crc = 0U;
1561 TRACE("Signing NTLM1 style\n");
1562
1563 for(i=0; i < pMessage->cBuffers; ++i)
1564 {
1565 if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1566 {
1567 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1568 pMessage->pBuffers[i].cbBuffer, crc);
1569 }
1570 }
1571
1572 sig[ 0] = (sign_version >> 0) & 0xff;
1573 sig[ 1] = (sign_version >> 8) & 0xff;
1574 sig[ 2] = (sign_version >> 16) & 0xff;
1575 sig[ 3] = (sign_version >> 24) & 0xff;
1576 memset(sig+4, 0, 4);
1577 sig[ 8] = (crc >> 0) & 0xff;
1578 sig[ 9] = (crc >> 8) & 0xff;
1579 sig[10] = (crc >> 16) & 0xff;
1580 sig[11] = (crc >> 24) & 0xff;
1581 sig[12] = (helper->crypt.ntlm.seq_num >> 0) & 0xff;
1582 sig[13] = (helper->crypt.ntlm.seq_num >> 8) & 0xff;
1583 sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1584 sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1585
1586 ++(helper->crypt.ntlm.seq_num);
1587
1588 if(encrypt_sig)
1589 SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1590 return SEC_E_OK;
1591 }
1592
1593 if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1594 {
1595 TRACE("Creating a dummy signature.\n");
1596 /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1597 memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1598 memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1599 pMessage->pBuffers[token_idx].cbBuffer = 16;
1600 return SEC_E_OK;
1601 }
1602
1603 return SEC_E_UNSUPPORTED_FUNCTION;
1604 }
1605
1606 /***********************************************************************
1607 * MakeSignature
1608 */
1609 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1610 PSecBufferDesc pMessage, ULONG MessageSeqNo)
1611 {
1612 PNegoHelper helper;
1613 int token_idx;
1614
1615 TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1616 if (!phContext)
1617 return SEC_E_INVALID_HANDLE;
1618
1619 if(fQOP)
1620 FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1621
1622 if(MessageSeqNo)
1623 FIXME("Ignoring MessageSeqNo\n");
1624
1625 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1626 return SEC_E_INVALID_TOKEN;
1627
1628 /* If we didn't find a SECBUFFER_TOKEN type buffer */
1629 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1630 return SEC_E_INVALID_TOKEN;
1631
1632 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1633 return SEC_E_BUFFER_TOO_SMALL;
1634
1635 helper = (PNegoHelper)phContext->dwLower;
1636 TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1637
1638 return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1639 }
1640
1641 /***********************************************************************
1642 * VerifySignature
1643 */
1644 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1645 PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1646 {
1647 PNegoHelper helper;
1648 ULONG fQOP = 0;
1649 UINT i;
1650 int token_idx;
1651 SECURITY_STATUS ret;
1652 SecBufferDesc local_desc;
1653 PSecBuffer local_buff;
1654 BYTE local_sig[16];
1655
1656 TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1657 if(!phContext)
1658 return SEC_E_INVALID_HANDLE;
1659
1660 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1661 return SEC_E_INVALID_TOKEN;
1662
1663 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1664 return SEC_E_INVALID_TOKEN;
1665
1666 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1667 return SEC_E_BUFFER_TOO_SMALL;
1668
1669 if(MessageSeqNo)
1670 FIXME("Ignoring MessageSeqNo\n");
1671
1672 helper = (PNegoHelper)phContext->dwLower;
1673 TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1674
1675 local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1676
1677 local_desc.ulVersion = SECBUFFER_VERSION;
1678 local_desc.cBuffers = pMessage->cBuffers;
1679 local_desc.pBuffers = local_buff;
1680
1681 for(i=0; i < pMessage->cBuffers; ++i)
1682 {
1683 if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1684 {
1685 local_buff[i].BufferType = SECBUFFER_TOKEN;
1686 local_buff[i].cbBuffer = 16;
1687 local_buff[i].pvBuffer = local_sig;
1688 }
1689 else
1690 {
1691 local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1692 local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1693 local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1694 }
1695 }
1696
1697 if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1698 return ret;
1699
1700 if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1701 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1702 ret = SEC_E_MESSAGE_ALTERED;
1703 else
1704 ret = SEC_E_OK;
1705
1706 HeapFree(GetProcessHeap(), 0, local_buff);
1707 pfQOP = &fQOP;
1708
1709 return ret;
1710
1711 }
1712
1713 /***********************************************************************
1714 * FreeCredentialsHandle
1715 */
1716 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1717 PCredHandle phCredential)
1718 {
1719 SECURITY_STATUS ret;
1720
1721 if(phCredential){
1722 PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1723 phCredential->dwUpper = 0;
1724 phCredential->dwLower = 0;
1725 if (ntlm_cred->password)
1726 memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1727 HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1728 HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1729 HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1730 ret = SEC_E_OK;
1731 }
1732 else
1733 ret = SEC_E_OK;
1734
1735 return ret;
1736 }
1737
1738 /***********************************************************************
1739 * EncryptMessage
1740 */
1741 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1742 ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1743 {
1744 PNegoHelper helper;
1745 int token_idx, data_idx;
1746
1747 TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1748
1749 if(!phContext)
1750 return SEC_E_INVALID_HANDLE;
1751
1752 if(fQOP)
1753 FIXME("Ignoring fQOP\n");
1754
1755 if(MessageSeqNo)
1756 FIXME("Ignoring MessageSeqNo\n");
1757
1758 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1759 return SEC_E_INVALID_TOKEN;
1760
1761 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1762 return SEC_E_INVALID_TOKEN;
1763
1764 if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
1765 return SEC_E_INVALID_TOKEN;
1766
1767 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1768 return SEC_E_BUFFER_TOO_SMALL;
1769
1770 helper = (PNegoHelper) phContext->dwLower;
1771
1772 if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1773 helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1774 {
1775 ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1776 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1777 (BYTE *)pMessage->pBuffers[data_idx].pvBuffer,
1778 pMessage->pBuffers[data_idx].cbBuffer);
1779
1780 if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1781 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1782 ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1783
1784
1785 return SEC_E_OK;
1786 }
1787 else
1788 {
1789 PBYTE sig;
1790 ULONG save_flags;
1791
1792 /* EncryptMessage always produces real signatures, so make sure
1793 * NTLMSSP_NEGOTIATE_SIGN is set*/
1794 save_flags = helper->neg_flags;
1795 helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1796 ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1797 helper->neg_flags = save_flags;
1798
1799 sig = pMessage->pBuffers[token_idx].pvBuffer;
1800
1801 SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1802 pMessage->pBuffers[data_idx].pvBuffer,
1803 pMessage->pBuffers[data_idx].cbBuffer);
1804 SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1805
1806 if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1807 memset(sig+4, 0, 4);
1808
1809 }
1810
1811 return SEC_E_OK;
1812 }
1813
1814 /***********************************************************************
1815 * DecryptMessage
1816 */
1817 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1818 PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1819 {
1820 SECURITY_STATUS ret;
1821 ULONG ntlmssp_flags_save;
1822 PNegoHelper helper;
1823 int token_idx, data_idx;
1824 TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1825
1826 if(!phContext)
1827 return SEC_E_INVALID_HANDLE;
1828
1829 if(MessageSeqNo)
1830 FIXME("Ignoring MessageSeqNo\n");
1831
1832 if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1833 return SEC_E_INVALID_TOKEN;
1834
1835 if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1836 return SEC_E_INVALID_TOKEN;
1837
1838 if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
1839 return SEC_E_INVALID_TOKEN;
1840
1841 if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1842 return SEC_E_BUFFER_TOO_SMALL;
1843
1844 helper = (PNegoHelper) phContext->dwLower;
1845
1846 if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1847 {
1848 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1849 pMessage->pBuffers[data_idx].pvBuffer,
1850 pMessage->pBuffers[data_idx].cbBuffer);
1851 }
1852 else
1853 {
1854 SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1855 pMessage->pBuffers[data_idx].pvBuffer,
1856 pMessage->pBuffers[data_idx].cbBuffer);
1857 }
1858
1859 /* Make sure we use a session key for the signature check, EncryptMessage
1860 * always does that, even in the dummy case */
1861 ntlmssp_flags_save = helper->neg_flags;
1862
1863 helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1864 ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1865
1866 helper->neg_flags = ntlmssp_flags_save;
1867
1868 return ret;
1869 }
1870
1871 static const SecurityFunctionTableA ntlmTableA = {
1872 1,
1873 NULL, /* EnumerateSecurityPackagesA */
1874 ntlm_QueryCredentialsAttributesA, /* QueryCredentialsAttributesA */
1875 ntlm_AcquireCredentialsHandleA, /* AcquireCredentialsHandleA */
1876 ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
1877 NULL, /* Reserved2 */
1878 ntlm_InitializeSecurityContextA, /* InitializeSecurityContextA */
1879 ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
1880 ntlm_CompleteAuthToken, /* CompleteAuthToken */
1881 ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
1882 NULL, /* ApplyControlToken */
1883 ntlm_QueryContextAttributesA, /* QueryContextAttributesA */
1884 ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
1885 ntlm_RevertSecurityContext, /* RevertSecurityContext */
1886 ntlm_MakeSignature, /* MakeSignature */
1887 ntlm_VerifySignature, /* VerifySignature */
1888 FreeContextBuffer, /* FreeContextBuffer */
1889 NULL, /* QuerySecurityPackageInfoA */
1890 NULL, /* Reserved3 */
1891 NULL, /* Reserved4 */
1892 NULL, /* ExportSecurityContext */
1893 NULL, /* ImportSecurityContextA */
1894 NULL, /* AddCredentialsA */
1895 NULL, /* Reserved8 */
1896 NULL, /* QuerySecurityContextToken */
1897 ntlm_EncryptMessage, /* EncryptMessage */
1898 ntlm_DecryptMessage, /* DecryptMessage */
1899 NULL, /* SetContextAttributesA */
1900 };
1901
1902 static const SecurityFunctionTableW ntlmTableW = {
1903 1,
1904 NULL, /* EnumerateSecurityPackagesW */
1905 ntlm_QueryCredentialsAttributesW, /* QueryCredentialsAttributesW */
1906 ntlm_AcquireCredentialsHandleW, /* AcquireCredentialsHandleW */
1907 ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
1908 NULL, /* Reserved2 */
1909 ntlm_InitializeSecurityContextW, /* InitializeSecurityContextW */
1910 ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
1911 ntlm_CompleteAuthToken, /* CompleteAuthToken */
1912 ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
1913 NULL, /* ApplyControlToken */
1914 ntlm_QueryContextAttributesW, /* QueryContextAttributesW */
1915 ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
1916 ntlm_RevertSecurityContext, /* RevertSecurityContext */
1917 ntlm_MakeSignature, /* MakeSignature */
1918 ntlm_VerifySignature, /* VerifySignature */
1919 FreeContextBuffer, /* FreeContextBuffer */
1920 NULL, /* QuerySecurityPackageInfoW */
1921 NULL, /* Reserved3 */
1922 NULL, /* Reserved4 */
1923 NULL, /* ExportSecurityContext */
1924 NULL, /* ImportSecurityContextW */
1925 NULL, /* AddCredentialsW */
1926 NULL, /* Reserved8 */
1927 NULL, /* QuerySecurityContextToken */
1928 ntlm_EncryptMessage, /* EncryptMessage */
1929 ntlm_DecryptMessage, /* DecryptMessage */
1930 NULL, /* SetContextAttributesW */
1931 };
1932
1933 #define NTLM_COMMENT \
1934 { 'N', 'T', 'L', 'M', ' ', \
1935 'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1936 'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1937
1938 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1939 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1940
1941 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1942
1943 static char ntlm_name_A[] = NTLM_NAME;
1944 static WCHAR ntlm_name_W[] = NTLM_NAME;
1945
1946 /* According to Windows, NTLM has the following capabilities. */
1947 #define CAPS ( \
1948 SECPKG_FLAG_INTEGRITY | \
1949 SECPKG_FLAG_PRIVACY | \
1950 SECPKG_FLAG_TOKEN_ONLY | \
1951 SECPKG_FLAG_CONNECTION | \
1952 SECPKG_FLAG_MULTI_REQUIRED | \
1953 SECPKG_FLAG_IMPERSONATION | \
1954 SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1955 SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1956
1957 static const SecPkgInfoW infoW = {
1958 CAPS,
1959 1,
1960 RPC_C_AUTHN_WINNT,
1961 NTLM_MAX_BUF,
1962 ntlm_name_W,
1963 ntlm_comment_W
1964 };
1965
1966 static const SecPkgInfoA infoA = {
1967 CAPS,
1968 1,
1969 RPC_C_AUTHN_WINNT,
1970 NTLM_MAX_BUF,
1971 ntlm_name_A,
1972 ntlm_comment_A
1973 };
1974
1975 void SECUR32_initNTLMSP(void)
1976 {
1977 SECURITY_STATUS ret;
1978 PNegoHelper helper;
1979 static CHAR version[] = "--version";
1980
1981 SEC_CHAR *args[] = {
1982 ntlm_auth,
1983 version,
1984 NULL };
1985
1986 if((ret = fork_helper(&helper, ntlm_auth, args)) != SEC_E_OK)
1987 {
1988 /* Cheat and allocate a helper anyway, so cleanup later will work. */
1989 helper = HeapAlloc(GetProcessHeap(),0, sizeof(PNegoHelper));
1990 helper->major = helper->minor = helper->micro = -1;
1991 }
1992 else
1993 check_version(helper);
1994
1995 if( (helper->major > MIN_NTLM_AUTH_MAJOR_VERSION) ||
1996 (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION &&
1997 helper->minor > MIN_NTLM_AUTH_MINOR_VERSION) ||
1998 (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION &&
1999 helper->minor == MIN_NTLM_AUTH_MINOR_VERSION &&
2000 helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
2001 {
2002 SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
2003 SECUR32_addPackages(provider, 1L, &infoA, &infoW);
2004 }
2005 else
2006 {
2007 ERR("%s was not found or is outdated. "
2008 "Make sure that ntlm_auth >= %d.%d.%d is in your path.\n",
2009 ntlm_auth,
2010 MIN_NTLM_AUTH_MAJOR_VERSION,
2011 MIN_NTLM_AUTH_MINOR_VERSION,
2012 MIN_NTLM_AUTH_MICRO_VERSION);
2013 ERR("Usually, you can find it in the winbind package of your "
2014 "distribution.\n");
2015
2016 }
2017 cleanup_helper(helper);
2018 }
useful hacks and other patches not (yet) suitable for mainline