msxml3: Added IDispatchEx support for IXMLDOMImplementation.
[wine] / dlls / secur32 / ntlm.c
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 WINE_DECLARE_DEBUG_CHANNEL(winediag);
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
44 static CHAR ntlm_auth[] = "ntlm_auth";
45
46 typedef 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  */
60 static 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  */
81 static 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
99 static 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_UNIXCP, 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_UNIXCP, 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
117 static 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_UNIXCP, 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_UNIXCP, 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  */
138 static 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 = 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 = 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 0x%08x %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                 NetApiBufferFree(ui);
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 ? password : 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 ? password : ntlm_cred->password,
595                                 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
596
597             SECUR32_CreateNTLM1SessionKey((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                 lstrcpynA(buffer, "PW AA==", max_len-1);
665             }
666             else /* Just do a noop on the next run */
667                 lstrcpynA(buffer, "OK", max_len-1);
668         }
669         else
670         {
671             lstrcpynA(buffer, "PW ", max_len-1);
672             if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
673                         password ? pwlen : ntlm_cred->pwlen, buffer+3,
674                         max_len-3, &buffer_len)) != SEC_E_OK)
675             {
676                 cleanup_helper(helper);
677                 goto isc_end;
678             }
679
680         }
681
682         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
683         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
684         {
685             cleanup_helper(helper);
686             goto isc_end;
687         }
688
689         TRACE("Helper returned %s\n", debugstr_a(buffer));
690
691         if(lstrlenA(want_flags) > 2)
692         {
693             TRACE("Want flags are %s\n", debugstr_a(want_flags));
694             lstrcpynA(buffer, want_flags, max_len-1);
695             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) 
696                     != SEC_E_OK)
697                 goto isc_end;
698             if(!strncmp(buffer, "BH", 2))
699                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
700         }
701
702         lstrcpynA(buffer, "YR", max_len-1);
703
704         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
705         {
706             cleanup_helper(helper);
707             goto isc_end;
708         }
709
710         TRACE("%s\n", buffer);
711
712         if(strncmp(buffer, "YR ", 3) != 0)
713         {
714             /* Something borked */
715             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
716             ret = SEC_E_INTERNAL_ERROR;
717             cleanup_helper(helper);
718             goto isc_end;
719         }
720         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
721                         max_len-1, &bin_len)) != SEC_E_OK)
722         {
723             cleanup_helper(helper);
724             goto isc_end;
725         }
726
727         /* put the decoded client blob into the out buffer */
728
729         phNewContext->dwUpper = ctxt_attr;
730         phNewContext->dwLower = (ULONG_PTR)helper;
731
732         ret = SEC_I_CONTINUE_NEEDED;
733     }
734     else
735     {
736         int input_token_idx;
737
738         /* handle second call here */
739         /* encode server data to base64 */
740         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
741         {
742             ret = SEC_E_INVALID_TOKEN;
743             goto isc_end;
744         }
745
746         if(!phContext)
747         {
748             ret = SEC_E_INVALID_HANDLE;
749             goto isc_end;
750         }
751
752         /* As the server side of sspi never calls this, make sure that
753          * the handler is a client handler.
754          */
755         helper = (PNegoHelper)phContext->dwLower;
756         if(helper->mode != NTLM_CLIENT)
757         {
758             TRACE("Helper mode = %d\n", helper->mode);
759             ret = SEC_E_INVALID_HANDLE;
760             goto isc_end;
761         }
762
763         if (!pInput->pBuffers[input_token_idx].pvBuffer)
764         {
765             ret = SEC_E_INTERNAL_ERROR;
766             goto isc_end;
767         }
768
769         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
770         {
771             TRACE("pInput->pBuffers[%d].cbBuffer is: %d\n",
772                     input_token_idx,
773                     pInput->pBuffers[input_token_idx].cbBuffer);
774             ret = SEC_E_INVALID_TOKEN;
775             goto isc_end;
776         }
777         else
778             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
779
780         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
781
782         lstrcpynA(buffer, "TT ", max_len-1);
783
784         if((ret = encodeBase64(bin, bin_len, buffer+3,
785                         max_len-3, &buffer_len)) != SEC_E_OK)
786             goto isc_end;
787
788         TRACE("Server sent: %s\n", debugstr_a(buffer));
789
790         /* send TT base64 blob to ntlm_auth */
791         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
792             goto isc_end;
793
794         TRACE("Helper replied: %s\n", debugstr_a(buffer));
795
796         if( (strncmp(buffer, "KK ", 3) != 0) &&
797                 (strncmp(buffer, "AF ", 3) !=0))
798         {
799             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
800             ret = SEC_E_INVALID_TOKEN;
801             goto isc_end;
802         }
803
804         /* decode the blob and send it to server */
805         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
806                         &bin_len)) != SEC_E_OK)
807         {
808             goto isc_end;
809         }
810
811         phNewContext->dwUpper = ctxt_attr;
812         phNewContext->dwLower = (ULONG_PTR)helper;
813
814         ret = SEC_E_OK;
815     }
816
817     /* put the decoded client blob into the out buffer */
818
819     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
820     {
821         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
822         ret = SEC_E_BUFFER_TOO_SMALL;
823         if ((phContext == NULL) && (pInput == NULL))
824         {
825             HeapFree(GetProcessHeap(), 0, helper->session_key);
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             HeapFree(GetProcessHeap(), 0, helper->session_key);
845             cleanup_helper(helper);
846             phNewContext->dwUpper = 0;
847             phNewContext->dwLower = 0;
848         }
849         goto isc_end;
850     }
851
852     if (!pOutput->pBuffers[token_idx].pvBuffer)
853     {
854         TRACE("out buffer is NULL\n");
855         ret = SEC_E_INTERNAL_ERROR;
856         if ((phContext == NULL) && (pInput == NULL))
857         {
858             HeapFree(GetProcessHeap(), 0, helper->session_key);
859             cleanup_helper(helper);
860             phNewContext->dwUpper = 0;
861             phNewContext->dwLower = 0;
862         }
863         goto isc_end;
864     }
865
866     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
867     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
868
869     if(ret == SEC_E_OK)
870     {
871         TRACE("Getting negotiated flags\n");
872         lstrcpynA(buffer, "GF", max_len - 1);
873         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
874             goto isc_end;
875
876         if(buffer_len < 3)
877         {
878             TRACE("No flags negotiated.\n");
879             helper->neg_flags = 0l;
880         }
881         else
882         {
883             TRACE("Negotiated %s\n", debugstr_a(buffer));
884             sscanf(buffer + 3, "%x", &(helper->neg_flags));
885             TRACE("Stored 0x%08x as flags\n", helper->neg_flags);
886         }
887
888         TRACE("Getting session key\n");
889         lstrcpynA(buffer, "GK", max_len - 1);
890         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
891             goto isc_end;
892
893         if(strncmp(buffer, "BH", 2) == 0)
894             TRACE("No key negotiated.\n");
895         else if(strncmp(buffer, "GK ", 3) == 0)
896         {
897             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len, 
898                             &bin_len)) != SEC_E_OK)
899             {
900                 TRACE("Failed to decode session key\n");
901             }
902             TRACE("Session key is %s\n", debugstr_a(buffer+3));
903             HeapFree(GetProcessHeap(), 0, helper->session_key);
904             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
905             if(!helper->session_key)
906             {
907                 TRACE("Failed to allocate memory for session key\n");
908                 ret = SEC_E_INTERNAL_ERROR;
909                 goto isc_end;
910             }
911             memcpy(helper->session_key, bin, bin_len);
912         }
913
914         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
915         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
916         helper->crypt.ntlm.seq_num = 0l;
917         SECUR32_CreateNTLM2SubKeys(helper);
918         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
919         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
920         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
921                          helper->crypt.ntlm2.send_seal_key, 16);
922         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
923                          helper->crypt.ntlm2.recv_seal_key, 16);
924         helper->crypt.ntlm2.send_seq_no = 0l;
925         helper->crypt.ntlm2.recv_seq_no = 0l;
926     }
927
928 isc_end:
929     HeapFree(GetProcessHeap(), 0, username);
930     HeapFree(GetProcessHeap(), 0, domain);
931     HeapFree(GetProcessHeap(), 0, password);
932     HeapFree(GetProcessHeap(), 0, want_flags);
933     HeapFree(GetProcessHeap(), 0, buffer);
934     HeapFree(GetProcessHeap(), 0, bin);
935     return ret;
936 }
937
938 /***********************************************************************
939  *              InitializeSecurityContextA
940  */
941 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
942  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
943  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep, 
944  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext, 
945  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
946 {
947     SECURITY_STATUS ret;
948     SEC_WCHAR *target = NULL;
949
950     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
951      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
952      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
953
954     if(pszTargetName != NULL)
955     {
956         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
957             strlen(pszTargetName)+1, NULL, 0);
958         target = HeapAlloc(GetProcessHeap(), 0, target_size *
959                 sizeof(SEC_WCHAR));
960         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
961             target, target_size);
962     }
963
964     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
965             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
966             phNewContext, pOutput, pfContextAttr, ptsExpiry);
967
968     HeapFree(GetProcessHeap(), 0, target);
969     return ret;
970 }
971
972 /***********************************************************************
973  *              AcceptSecurityContext
974  */
975 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
976  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
977  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext, 
978  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
979 {
980     SECURITY_STATUS ret;
981     char *buffer, *want_flags = NULL;
982     PBYTE bin;
983     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
984     ULONG ctxt_attr = 0;
985     PNegoHelper helper;
986     PNtlmCredentials ntlm_cred;
987
988     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
989      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
990      ptsExpiry);
991
992     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
993     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
994
995     if(TargetDataRep == SECURITY_NETWORK_DREP){
996         TRACE("Using SECURITY_NETWORK_DREP\n");
997     }
998
999     if(phContext == NULL)
1000     {
1001         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
1002         SEC_CHAR *server_argv[] = { ntlm_auth,
1003             server_helper_protocol,
1004             NULL };
1005
1006         if (!phCredential)
1007         {
1008             ret = SEC_E_INVALID_HANDLE;
1009             goto asc_end;
1010         }
1011
1012         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1013
1014         if(ntlm_cred->mode != NTLM_SERVER)
1015         {
1016             ret = SEC_E_INVALID_HANDLE;
1017             goto asc_end;
1018         }
1019
1020         /* This is the first call to AcceptSecurityHandle */
1021         if(pInput == NULL)
1022         {
1023             ret = SEC_E_INCOMPLETE_MESSAGE;
1024             goto asc_end;
1025         }
1026
1027         if(pInput->cBuffers < 1)
1028         {
1029             ret = SEC_E_INCOMPLETE_MESSAGE;
1030             goto asc_end;
1031         }
1032
1033         if(pInput->pBuffers[0].cbBuffer > max_len)
1034         {
1035             ret = SEC_E_INVALID_TOKEN;
1036             goto asc_end;
1037         }
1038         else
1039             bin_len = pInput->pBuffers[0].cbBuffer;
1040
1041         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1042             SEC_E_OK)
1043         {
1044             ret = SEC_E_INTERNAL_ERROR;
1045             goto asc_end;
1046         }
1047         helper->mode = NTLM_SERVER;
1048
1049         /* Handle all the flags */
1050         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1051         if(want_flags == NULL)
1052         {
1053             TRACE("Failed to allocate memory for the want_flags!\n");
1054             ret = SEC_E_INSUFFICIENT_MEMORY;
1055             cleanup_helper(helper);
1056             goto asc_end;
1057         }
1058         lstrcpyA(want_flags, "SF");
1059         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1060         {
1061             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1062         }
1063         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1064         {
1065             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1066         }
1067         if(fContextReq & ASC_REQ_CONNECTION)
1068         {
1069             /* This is default, so we'll enable it */
1070             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1071             ctxt_attr |= ASC_RET_CONNECTION;
1072         }
1073         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1074         {
1075             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1076         }
1077         if(fContextReq & ASC_REQ_INTEGRITY)
1078         {
1079             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1080         }
1081         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1082         {
1083             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1084         }
1085         if(fContextReq & ASC_REQ_REPLAY_DETECT)
1086         {
1087             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1088         }
1089         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1090         {
1091             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1092         }
1093         if(fContextReq & ISC_REQ_STREAM)
1094         {
1095             FIXME("ASC_REQ_STREAM stub\n");
1096         }
1097         /* Done with the flags */
1098
1099         if(lstrlenA(want_flags) > 3)
1100         {
1101             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1102             lstrcpynA(buffer, want_flags, max_len - 1);
1103             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1104                     SEC_E_OK)
1105             {
1106                 cleanup_helper(helper);
1107                 goto asc_end;
1108             }
1109             if(!strncmp(buffer, "BH", 2))
1110                 TRACE("Helper doesn't understand new command set\n");
1111         }
1112
1113         /* This is the YR request from the client, encode to base64 */
1114
1115         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1116
1117         lstrcpynA(buffer, "YR ", max_len-1);
1118
1119         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1120                     &buffer_len)) != SEC_E_OK)
1121         {
1122             cleanup_helper(helper);
1123             goto asc_end;
1124         }
1125
1126         TRACE("Client sent: %s\n", debugstr_a(buffer));
1127
1128         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1129                     SEC_E_OK)
1130         {
1131             cleanup_helper(helper);
1132             goto asc_end;
1133         }
1134
1135         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1136         /* The expected answer is TT <base64 blob> */
1137
1138         if(strncmp(buffer, "TT ", 3) != 0)
1139         {
1140             ret = SEC_E_INTERNAL_ERROR;
1141             cleanup_helper(helper);
1142             goto asc_end;
1143         }
1144
1145         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1146                         &bin_len)) != SEC_E_OK)
1147         {
1148             cleanup_helper(helper);
1149             goto asc_end;
1150         }
1151
1152         /* send this to the client */
1153         if(pOutput == NULL)
1154         {
1155             ret = SEC_E_INSUFFICIENT_MEMORY;
1156             cleanup_helper(helper);
1157             goto asc_end;
1158         }
1159
1160         if(pOutput->cBuffers < 1)
1161         {
1162             ret = SEC_E_INSUFFICIENT_MEMORY;
1163             cleanup_helper(helper);
1164             goto asc_end;
1165         }
1166
1167         pOutput->pBuffers[0].cbBuffer = bin_len;
1168         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1169         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1170         ret = SEC_I_CONTINUE_NEEDED;
1171
1172     }
1173     else
1174     {
1175         /* we expect a KK request from client */
1176         if(pInput == NULL)
1177         {
1178             ret = SEC_E_INCOMPLETE_MESSAGE;
1179             goto asc_end;
1180         }
1181
1182         if(pInput->cBuffers < 1)
1183         {
1184             ret = SEC_E_INCOMPLETE_MESSAGE;
1185             goto asc_end;
1186         }
1187
1188         if(!phContext)
1189         {
1190             ret = SEC_E_INVALID_HANDLE;
1191             goto asc_end;
1192         }
1193
1194         helper = (PNegoHelper)phContext->dwLower;
1195
1196         if(helper->mode != NTLM_SERVER)
1197         {
1198             ret = SEC_E_INVALID_HANDLE;
1199             goto asc_end;
1200         }
1201
1202         if(pInput->pBuffers[0].cbBuffer > max_len)
1203         {
1204             ret = SEC_E_INVALID_TOKEN;
1205             goto asc_end;
1206         }
1207         else
1208             bin_len = pInput->pBuffers[0].cbBuffer;
1209
1210         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1211
1212         lstrcpynA(buffer, "KK ", max_len-1);
1213
1214         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1215                     &buffer_len)) != SEC_E_OK)
1216         {
1217             goto asc_end;
1218         }
1219
1220         TRACE("Client sent: %s\n", debugstr_a(buffer));
1221
1222         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1223                     SEC_E_OK)
1224         {
1225             goto asc_end;
1226         }
1227
1228         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1229
1230         /* At this point, we get a NA if the user didn't authenticate, but a BH
1231          * if ntlm_auth could not connect to winbindd. Apart from running Wine
1232          * as root, there is no way to fix this for now, so just handle this as
1233          * a failed login. */
1234         if(strncmp(buffer, "AF ", 3) != 0)
1235         {
1236             if(strncmp(buffer, "NA ", 3) == 0)
1237             {
1238                 ret = SEC_E_LOGON_DENIED;
1239                 goto asc_end;
1240             }
1241             else
1242             {
1243                 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1244
1245                 if( (buffer_len >= ntlm_pipe_err_len) &&
1246                     (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1247                              ntlm_pipe_err_len) == 0))
1248                 {
1249                     TRACE("Connection to winbindd failed\n");
1250                     ret = SEC_E_LOGON_DENIED;
1251                 }
1252                 else
1253                     ret = SEC_E_INTERNAL_ERROR;
1254
1255                 goto asc_end;
1256             }
1257         }
1258         pOutput->pBuffers[0].cbBuffer = 0;
1259
1260         TRACE("Getting negotiated flags\n");
1261         lstrcpynA(buffer, "GF", max_len - 1);
1262         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1263             goto asc_end;
1264
1265         if(buffer_len < 3)
1266         {
1267             TRACE("No flags negotiated, or helper does not support GF command\n");
1268         }
1269         else
1270         {
1271             TRACE("Negotiated %s\n", debugstr_a(buffer));
1272             sscanf(buffer + 3, "%x", &(helper->neg_flags));
1273             TRACE("Stored 0x%08x as flags\n", helper->neg_flags);
1274         }
1275
1276         TRACE("Getting session key\n");
1277         lstrcpynA(buffer, "GK", max_len - 1);
1278         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1279             goto asc_end;
1280
1281         if(buffer_len < 3)
1282             TRACE("Helper does not support GK command\n");
1283         else
1284         {
1285             if(strncmp(buffer, "BH ", 3) == 0)
1286             {
1287                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1288                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1289                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1290                 memset(helper->session_key, 0 , 16);
1291             }
1292             else if(strncmp(buffer, "GK ", 3) == 0)
1293             {
1294                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len, 
1295                                 &bin_len)) != SEC_E_OK)
1296                 {
1297                     TRACE("Failed to decode session key\n");
1298                 }
1299                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1300                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1301                 if(!helper->session_key)
1302                 {
1303                     TRACE("Failed to allocate memory for session key\n");
1304                     ret = SEC_E_INTERNAL_ERROR;
1305                     goto asc_end;
1306                 }
1307                 memcpy(helper->session_key, bin, 16);
1308             }
1309         }
1310         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1311         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1312         helper->crypt.ntlm.seq_num = 0l;
1313     }
1314
1315     phNewContext->dwUpper = ctxt_attr;
1316     phNewContext->dwLower = (ULONG_PTR)helper;
1317
1318 asc_end:
1319     HeapFree(GetProcessHeap(), 0, want_flags);
1320     HeapFree(GetProcessHeap(), 0, buffer);
1321     HeapFree(GetProcessHeap(), 0, bin);
1322     return ret;
1323 }
1324
1325 /***********************************************************************
1326  *              CompleteAuthToken
1327  */
1328 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1329  PSecBufferDesc pToken)
1330 {
1331     /* We never need to call CompleteAuthToken anyway */
1332     TRACE("%p %p\n", phContext, pToken);
1333     if (!phContext)
1334         return SEC_E_INVALID_HANDLE;
1335     
1336     return SEC_E_OK;
1337 }
1338
1339 /***********************************************************************
1340  *              DeleteSecurityContext
1341  */
1342 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1343 {
1344     PNegoHelper helper;
1345
1346     TRACE("%p\n", phContext);
1347     if (!phContext)
1348         return SEC_E_INVALID_HANDLE;
1349
1350     helper = (PNegoHelper)phContext->dwLower;
1351
1352     phContext->dwUpper = 0;
1353     phContext->dwLower = 0;
1354
1355     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1356     HeapFree(GetProcessHeap(), 0, helper->session_key);
1357     SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1358     SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1359     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1360     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1361     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1362     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1363
1364     cleanup_helper(helper);
1365
1366     return SEC_E_OK;
1367 }
1368
1369 /***********************************************************************
1370  *              QueryContextAttributesW
1371  */
1372 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1373  ULONG ulAttribute, void *pBuffer)
1374 {
1375     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1376     if (!phContext)
1377         return SEC_E_INVALID_HANDLE;
1378
1379     switch(ulAttribute)
1380     {
1381 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1382         _x(SECPKG_ATTR_ACCESS_TOKEN);
1383         _x(SECPKG_ATTR_AUTHORITY);
1384         _x(SECPKG_ATTR_DCE_INFO);
1385         case SECPKG_ATTR_FLAGS:
1386         {
1387             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1388             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1389
1390             spcf->Flags = 0;
1391             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1392                 spcf->Flags |= ISC_RET_INTEGRITY;
1393             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1394                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1395             return SEC_E_OK;
1396         }
1397         _x(SECPKG_ATTR_KEY_INFO);
1398         _x(SECPKG_ATTR_LIFESPAN);
1399         _x(SECPKG_ATTR_NAMES);
1400         _x(SECPKG_ATTR_NATIVE_NAMES);
1401         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1402         _x(SECPKG_ATTR_PACKAGE_INFO);
1403         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1404         _x(SECPKG_ATTR_SESSION_KEY);
1405         case SECPKG_ATTR_SIZES:
1406         {
1407             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1408             spcs->cbMaxToken = NTLM_MAX_BUF;
1409             spcs->cbMaxSignature = 16;
1410             spcs->cbBlockSize = 0;
1411             spcs->cbSecurityTrailer = 16;
1412             return SEC_E_OK;
1413         }
1414         _x(SECPKG_ATTR_STREAM_SIZES);
1415         _x(SECPKG_ATTR_TARGET_INFORMATION);
1416 #undef _x
1417         default:
1418             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1419     }
1420
1421     return SEC_E_UNSUPPORTED_FUNCTION;
1422 }
1423
1424 /***********************************************************************
1425  *              QueryContextAttributesA
1426  */
1427 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1428  ULONG ulAttribute, void *pBuffer)
1429 {
1430     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1431 }
1432
1433 /***********************************************************************
1434  *              ImpersonateSecurityContext
1435  */
1436 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1437 {
1438     SECURITY_STATUS ret;
1439
1440     TRACE("%p\n", phContext);
1441     if (phContext)
1442     {
1443         ret = SEC_E_UNSUPPORTED_FUNCTION;
1444     }
1445     else
1446     {
1447         ret = SEC_E_INVALID_HANDLE;
1448     }
1449     return ret;
1450 }
1451
1452 /***********************************************************************
1453  *              RevertSecurityContext
1454  */
1455 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1456 {
1457     SECURITY_STATUS ret;
1458
1459     TRACE("%p\n", phContext);
1460     if (phContext)
1461     {
1462         ret = SEC_E_UNSUPPORTED_FUNCTION;
1463     }
1464     else
1465     {
1466         ret = SEC_E_INVALID_HANDLE;
1467     }
1468     return ret;
1469 }
1470
1471 /***********************************************************************
1472  *             ntlm_CreateSignature
1473  * As both MakeSignature and VerifySignature need this, but different keys
1474  * are needed for NTLM2, the logic goes into a helper function.
1475  * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1476  * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1477  * the signature is encrypted after the message was encrypted, so
1478  * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1479  * false.
1480  */
1481 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1482         int token_idx, SignDirection direction, BOOL encrypt_sig)
1483 {
1484     ULONG sign_version = 1;
1485     UINT i;
1486     PBYTE sig;
1487     TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1488             encrypt_sig);
1489
1490     sig = pMessage->pBuffers[token_idx].pvBuffer;
1491
1492     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1493             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1494     {
1495         BYTE digest[16];
1496         BYTE seq_no[4];
1497         HMAC_MD5_CTX hmac_md5_ctx;
1498
1499         TRACE("Signing NTLM2 style\n");
1500
1501         if(direction == NTLM_SEND)
1502         {
1503             seq_no[0] = (helper->crypt.ntlm2.send_seq_no >>  0) & 0xff;
1504             seq_no[1] = (helper->crypt.ntlm2.send_seq_no >>  8) & 0xff;
1505             seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1506             seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1507
1508             ++(helper->crypt.ntlm2.send_seq_no);
1509
1510             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1511         }
1512         else
1513         {
1514             seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >>  0) & 0xff;
1515             seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >>  8) & 0xff;
1516             seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1517             seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1518
1519             ++(helper->crypt.ntlm2.recv_seq_no);
1520
1521             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1522         }
1523
1524         HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1525         for( i = 0; i < pMessage->cBuffers; ++i )
1526         {
1527             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1528                 HMACMD5Update(&hmac_md5_ctx, pMessage->pBuffers[i].pvBuffer,
1529                         pMessage->pBuffers[i].cbBuffer);
1530         }
1531
1532         HMACMD5Final(&hmac_md5_ctx, digest);
1533
1534         if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1535         {
1536             if(direction == NTLM_SEND)
1537                 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1538             else
1539                 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1540         }
1541
1542         /* The NTLM2 signature is the sign version */
1543         sig[ 0] = (sign_version >>  0) & 0xff;
1544         sig[ 1] = (sign_version >>  8) & 0xff;
1545         sig[ 2] = (sign_version >> 16) & 0xff;
1546         sig[ 3] = (sign_version >> 24) & 0xff;
1547         /* The first 8 bytes of the digest */
1548         memcpy(sig+4, digest, 8);
1549         /* And the sequence number */
1550         memcpy(sig+12, seq_no, 4);
1551
1552         pMessage->pBuffers[token_idx].cbBuffer = 16;
1553
1554         return SEC_E_OK;
1555     }
1556     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1557     {
1558         ULONG crc = 0U;
1559         TRACE("Signing NTLM1 style\n");
1560
1561         for(i=0; i < pMessage->cBuffers; ++i)
1562         {
1563             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1564             {
1565                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1566                     pMessage->pBuffers[i].cbBuffer, crc);
1567             }
1568         }
1569
1570         sig[ 0] = (sign_version >>  0) & 0xff;
1571         sig[ 1] = (sign_version >>  8) & 0xff;
1572         sig[ 2] = (sign_version >> 16) & 0xff;
1573         sig[ 3] = (sign_version >> 24) & 0xff;
1574         memset(sig+4, 0, 4);
1575         sig[ 8] = (crc >>  0) & 0xff;
1576         sig[ 9] = (crc >>  8) & 0xff;
1577         sig[10] = (crc >> 16) & 0xff;
1578         sig[11] = (crc >> 24) & 0xff;
1579         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1580         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1581         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1582         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1583
1584         ++(helper->crypt.ntlm.seq_num);
1585
1586         if(encrypt_sig)
1587             SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1588         return SEC_E_OK;
1589     }
1590
1591     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1592     {
1593         TRACE("Creating a dummy signature.\n");
1594         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1595         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1596         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1597         pMessage->pBuffers[token_idx].cbBuffer = 16;
1598         return SEC_E_OK;
1599     }
1600
1601     return SEC_E_UNSUPPORTED_FUNCTION;
1602 }
1603
1604 /***********************************************************************
1605  *              MakeSignature
1606  */
1607 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1608  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1609 {
1610     PNegoHelper helper;
1611     int token_idx;
1612
1613     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1614     if (!phContext)
1615         return SEC_E_INVALID_HANDLE;
1616
1617     if(fQOP)
1618         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1619
1620     if(MessageSeqNo)
1621         FIXME("Ignoring MessageSeqNo\n");
1622
1623     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1624         return SEC_E_INVALID_TOKEN;
1625
1626     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1627     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1628         return SEC_E_INVALID_TOKEN;
1629
1630     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1631         return SEC_E_BUFFER_TOO_SMALL;
1632
1633     helper = (PNegoHelper)phContext->dwLower;
1634     TRACE("Negotiated flags are: 0x%08x\n", helper->neg_flags);
1635
1636     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1637 }
1638
1639 /***********************************************************************
1640  *              VerifySignature
1641  */
1642 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1643  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1644 {
1645     PNegoHelper helper;
1646     ULONG fQOP = 0;
1647     UINT i;
1648     int token_idx;
1649     SECURITY_STATUS ret;
1650     SecBufferDesc local_desc;
1651     PSecBuffer     local_buff;
1652     BYTE          local_sig[16];
1653
1654     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1655     if(!phContext)
1656         return SEC_E_INVALID_HANDLE;
1657
1658     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1659         return SEC_E_INVALID_TOKEN;
1660
1661     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1662         return SEC_E_INVALID_TOKEN;
1663
1664     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1665         return SEC_E_BUFFER_TOO_SMALL;
1666
1667     if(MessageSeqNo)
1668         FIXME("Ignoring MessageSeqNo\n");
1669
1670     helper = (PNegoHelper)phContext->dwLower;
1671     TRACE("Negotiated flags: 0x%08x\n", helper->neg_flags);
1672
1673     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1674
1675     local_desc.ulVersion = SECBUFFER_VERSION;
1676     local_desc.cBuffers = pMessage->cBuffers;
1677     local_desc.pBuffers = local_buff;
1678
1679     for(i=0; i < pMessage->cBuffers; ++i)
1680     {
1681         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1682         {
1683             local_buff[i].BufferType = SECBUFFER_TOKEN;
1684             local_buff[i].cbBuffer = 16;
1685             local_buff[i].pvBuffer = local_sig;
1686         }
1687         else
1688         {
1689             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1690             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1691             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1692         }
1693     }
1694
1695     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1696         return ret;
1697
1698     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1699                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1700         ret = SEC_E_MESSAGE_ALTERED;
1701     else
1702         ret = SEC_E_OK;
1703
1704     HeapFree(GetProcessHeap(), 0, local_buff);
1705     pfQOP = &fQOP;
1706
1707     return ret;
1708
1709 }
1710
1711 /***********************************************************************
1712  *             FreeCredentialsHandle
1713  */
1714 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1715         PCredHandle phCredential)
1716 {
1717     SECURITY_STATUS ret;
1718
1719     if(phCredential){
1720         PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1721         phCredential->dwUpper = 0;
1722         phCredential->dwLower = 0;
1723         if (ntlm_cred->password)
1724             memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1725         HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1726         HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1727         HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1728         HeapFree(GetProcessHeap(), 0, ntlm_cred);
1729         ret = SEC_E_OK;
1730     }
1731     else
1732         ret = SEC_E_OK;
1733     
1734     return ret;
1735 }
1736
1737 /***********************************************************************
1738  *             EncryptMessage
1739  */
1740 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1741         ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1742 {
1743     PNegoHelper helper;
1744     int token_idx, data_idx;
1745
1746     TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1747
1748     if(!phContext)
1749         return SEC_E_INVALID_HANDLE;
1750
1751     if(fQOP)
1752         FIXME("Ignoring fQOP\n");
1753
1754     if(MessageSeqNo)
1755         FIXME("Ignoring MessageSeqNo\n");
1756
1757     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1758         return SEC_E_INVALID_TOKEN;
1759
1760     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1761         return SEC_E_INVALID_TOKEN;
1762
1763     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
1764         return SEC_E_INVALID_TOKEN;
1765
1766     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1767         return SEC_E_BUFFER_TOO_SMALL;
1768
1769     helper = (PNegoHelper) phContext->dwLower;
1770
1771     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && 
1772             helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1773     { 
1774         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1775         SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1776                 pMessage->pBuffers[data_idx].pvBuffer,
1777                 pMessage->pBuffers[data_idx].cbBuffer);
1778
1779         if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1780             SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1781                     ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1782
1783
1784         return SEC_E_OK;
1785     }
1786     else
1787     {
1788         PBYTE sig;
1789         ULONG save_flags;
1790
1791         /* EncryptMessage always produces real signatures, so make sure
1792          * NTLMSSP_NEGOTIATE_SIGN is set*/
1793         save_flags = helper->neg_flags;
1794         helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1795         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1796         helper->neg_flags = save_flags;
1797
1798         sig = pMessage->pBuffers[token_idx].pvBuffer;
1799
1800         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1801                 pMessage->pBuffers[data_idx].pvBuffer,
1802                 pMessage->pBuffers[data_idx].cbBuffer);
1803         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1804
1805         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1806             memset(sig+4, 0, 4);
1807
1808     }
1809
1810     return SEC_E_OK;
1811 }
1812
1813 /***********************************************************************
1814  *             DecryptMessage
1815  */
1816 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1817         PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1818 {
1819     SECURITY_STATUS ret;
1820     ULONG ntlmssp_flags_save;
1821     PNegoHelper helper;
1822     int token_idx, data_idx;
1823     TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1824
1825     if(!phContext)
1826         return SEC_E_INVALID_HANDLE;
1827
1828     if(MessageSeqNo)
1829         FIXME("Ignoring MessageSeqNo\n");
1830
1831     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1832         return SEC_E_INVALID_TOKEN;
1833
1834     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1835         return SEC_E_INVALID_TOKEN;
1836
1837     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
1838         return SEC_E_INVALID_TOKEN;
1839
1840     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1841         return SEC_E_BUFFER_TOO_SMALL;
1842
1843     helper = (PNegoHelper) phContext->dwLower;
1844
1845     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1846     {
1847         SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1848                 pMessage->pBuffers[data_idx].pvBuffer,
1849                 pMessage->pBuffers[data_idx].cbBuffer);
1850     }
1851     else
1852     {
1853         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1854                 pMessage->pBuffers[data_idx].pvBuffer,
1855                 pMessage->pBuffers[data_idx].cbBuffer);
1856     }
1857
1858     /* Make sure we use a session key for the signature check, EncryptMessage
1859      * always does that, even in the dummy case */
1860     ntlmssp_flags_save = helper->neg_flags;
1861
1862     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1863     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1864
1865     helper->neg_flags = ntlmssp_flags_save;
1866
1867     return ret;
1868 }
1869
1870 static const SecurityFunctionTableA ntlmTableA = {
1871     1,
1872     NULL,   /* EnumerateSecurityPackagesA */
1873     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1874     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1875     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1876     NULL,   /* Reserved2 */
1877     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1878     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1879     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1880     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1881     NULL,  /* ApplyControlToken */
1882     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1883     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1884     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1885     ntlm_MakeSignature,                 /* MakeSignature */
1886     ntlm_VerifySignature,               /* VerifySignature */
1887     FreeContextBuffer,                  /* FreeContextBuffer */
1888     NULL,   /* QuerySecurityPackageInfoA */
1889     NULL,   /* Reserved3 */
1890     NULL,   /* Reserved4 */
1891     NULL,   /* ExportSecurityContext */
1892     NULL,   /* ImportSecurityContextA */
1893     NULL,   /* AddCredentialsA */
1894     NULL,   /* Reserved8 */
1895     NULL,   /* QuerySecurityContextToken */
1896     ntlm_EncryptMessage,                /* EncryptMessage */
1897     ntlm_DecryptMessage,                /* DecryptMessage */
1898     NULL,   /* SetContextAttributesA */
1899 };
1900
1901 static const SecurityFunctionTableW ntlmTableW = {
1902     1,
1903     NULL,   /* EnumerateSecurityPackagesW */
1904     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1905     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1906     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1907     NULL,   /* Reserved2 */
1908     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1909     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1910     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1911     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1912     NULL,  /* ApplyControlToken */
1913     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1914     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1915     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1916     ntlm_MakeSignature,                 /* MakeSignature */
1917     ntlm_VerifySignature,               /* VerifySignature */
1918     FreeContextBuffer,                  /* FreeContextBuffer */
1919     NULL,   /* QuerySecurityPackageInfoW */
1920     NULL,   /* Reserved3 */
1921     NULL,   /* Reserved4 */
1922     NULL,   /* ExportSecurityContext */
1923     NULL,   /* ImportSecurityContextW */
1924     NULL,   /* AddCredentialsW */
1925     NULL,   /* Reserved8 */
1926     NULL,   /* QuerySecurityContextToken */
1927     ntlm_EncryptMessage,                /* EncryptMessage */
1928     ntlm_DecryptMessage,                /* DecryptMessage */
1929     NULL,   /* SetContextAttributesW */
1930 };
1931
1932 #define NTLM_COMMENT \
1933    { 'N', 'T', 'L', 'M', ' ', \
1934      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1935      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1936
1937 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1938 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1939
1940 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1941
1942 static char ntlm_name_A[] = NTLM_NAME;
1943 static WCHAR ntlm_name_W[] = NTLM_NAME;
1944
1945 /* According to Windows, NTLM has the following capabilities.  */
1946 #define CAPS ( \
1947         SECPKG_FLAG_INTEGRITY | \
1948         SECPKG_FLAG_PRIVACY | \
1949         SECPKG_FLAG_TOKEN_ONLY | \
1950         SECPKG_FLAG_CONNECTION | \
1951         SECPKG_FLAG_MULTI_REQUIRED | \
1952         SECPKG_FLAG_IMPERSONATION | \
1953         SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1954         SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1955
1956 static const SecPkgInfoW infoW = {
1957     CAPS,
1958     1,
1959     RPC_C_AUTHN_WINNT,
1960     NTLM_MAX_BUF,
1961     ntlm_name_W,
1962     ntlm_comment_W
1963 };
1964
1965 static const SecPkgInfoA infoA = {
1966     CAPS,
1967     1,
1968     RPC_C_AUTHN_WINNT,
1969     NTLM_MAX_BUF,
1970     ntlm_name_A,
1971     ntlm_comment_A
1972 };
1973
1974 #define NEGO_COMMENT { 'M', 'i', 'c', 'r', 'o', 's', 'o', 'f', 't', ' ', \
1975     'P', 'a', 'c', 'k', 'a', 'g', 'e', ' ', \
1976     'N', 'e', 'g', 'o', 't', 'i', 'a', 't', 'o', 'r', 0}
1977
1978 static CHAR nego_comment_A[] = NEGO_COMMENT;
1979 static WCHAR nego_comment_W[] = NEGO_COMMENT;
1980
1981 #define NEGO_NAME {'N', 'e', 'g', 'o', 't', 'i', 'a', 't', 'e', 0}
1982
1983 static CHAR nego_name_A[] = NEGO_NAME;
1984 static WCHAR nego_name_W[] = NEGO_NAME;
1985
1986 #define NEGO_CAPS (\
1987     SECPKG_FLAG_INTEGRITY | \
1988     SECPKG_FLAG_PRIVACY | \
1989     SECPKG_FLAG_CONNECTION | \
1990     SECPKG_FLAG_MULTI_REQUIRED | \
1991     SECPKG_FLAG_EXTENDED_ERROR | \
1992     SECPKG_FLAG_IMPERSONATION | \
1993     SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1994     SECPKG_FLAG_READONLY_WITH_CHECKSUM )
1995
1996 /* Not used for now, just kept here for completeness sake. We need to use the
1997  * NTLM_MAX_BUF value. If the hack works, we might want to refactor the code a
1998  * bit. */
1999 #define NEGO_MAX_TOKEN 12000
2000
2001 static const SecPkgInfoW nego_infoW = {
2002     NEGO_CAPS,
2003     1,
2004     RPC_C_AUTHN_GSS_NEGOTIATE,
2005     NTLM_MAX_BUF,
2006     nego_name_W,
2007     nego_comment_W
2008 };
2009
2010 static const SecPkgInfoA nego_infoA = {
2011     NEGO_CAPS,
2012     1,
2013     RPC_C_AUTHN_GSS_NEGOTIATE,
2014     NTLM_MAX_BUF,
2015     nego_name_A,
2016     nego_comment_A
2017 };
2018
2019 void SECUR32_initNTLMSP(void)
2020 {
2021     PNegoHelper helper;
2022     static CHAR version[] = "--version";
2023
2024     SEC_CHAR *args[] = {
2025         ntlm_auth,
2026         version,
2027         NULL };
2028
2029     if(fork_helper(&helper, ntlm_auth, args) != SEC_E_OK)
2030     {
2031         /* Cheat and allocate a helper anyway, so cleanup later will work. */
2032         helper = HeapAlloc(GetProcessHeap(),0, sizeof(NegoHelper));
2033         helper->major = helper->minor = helper->micro = -1;
2034         helper->pipe_in = helper->pipe_out = -1;
2035     }
2036     else
2037         check_version(helper);
2038
2039     if( (helper->major >  MIN_NTLM_AUTH_MAJOR_VERSION) ||
2040         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
2041          helper->minor >  MIN_NTLM_AUTH_MINOR_VERSION) ||
2042         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
2043          helper->minor == MIN_NTLM_AUTH_MINOR_VERSION  &&
2044          helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
2045     {
2046         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
2047         SecureProvider *nego_provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
2048
2049         SECUR32_addPackages(provider, 1L, &infoA, &infoW);
2050         /* HACK: Also pretend this is the Negotiate provider */
2051         SECUR32_addPackages(nego_provider, 1L, &nego_infoA, &nego_infoW);
2052     }
2053     else
2054     {
2055         ERR_(winediag)("%s was not found or is outdated. "
2056                        "Make sure that ntlm_auth >= %d.%d.%d is in your path. "
2057                        "Usually, you can find it in the winbind package of your distribution.\n",
2058                        ntlm_auth,
2059                        MIN_NTLM_AUTH_MAJOR_VERSION,
2060                        MIN_NTLM_AUTH_MINOR_VERSION,
2061                        MIN_NTLM_AUTH_MICRO_VERSION);
2062
2063     }
2064     cleanup_helper(helper);
2065 }