/* * Copyright 2005, 2006 Kai Blin * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * This file implements the NTLM security provider. */ #include <assert.h> #include <stdarg.h> #include <stdio.h> #include "windef.h" #include "winbase.h" #include "winnls.h" #include "rpc.h" #include "sspi.h" #include "lm.h" #include "secur32_priv.h" #include "hmac_md5.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(ntlm); #define NTLM_MAX_BUF 1904 #define MIN_NTLM_AUTH_MAJOR_VERSION 3 #define MIN_NTLM_AUTH_MINOR_VERSION 0 #define MIN_NTLM_AUTH_MICRO_VERSION 25 static CHAR ntlm_auth[] = "ntlm_auth"; /*********************************************************************** * QueryCredentialsAttributesA */ static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA( PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer) { SECURITY_STATUS ret; TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer); if(ulAttribute == SECPKG_ATTR_NAMES) { FIXME("SECPKG_CRED_ATTR_NAMES: stub\n"); ret = SEC_E_UNSUPPORTED_FUNCTION; } else ret = SEC_E_UNSUPPORTED_FUNCTION; return ret; } /*********************************************************************** * QueryCredentialsAttributesW */ static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW( PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer) { SECURITY_STATUS ret; TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer); if(ulAttribute == SECPKG_ATTR_NAMES) { FIXME("SECPKG_CRED_ATTR_NAMES: stub\n"); ret = SEC_E_UNSUPPORTED_FUNCTION; } else ret = SEC_E_UNSUPPORTED_FUNCTION; return ret; } /*********************************************************************** * AcquireCredentialsHandleW */ static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW( SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse, PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn, PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry) { SECURITY_STATUS ret; PNegoHelper helper = NULL; static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp", credentials_argv[] = "--use-cached-creds"; SEC_CHAR *client_user_arg = NULL; SEC_CHAR *client_domain_arg = NULL; SEC_WCHAR *username = NULL, *domain = NULL; SEC_CHAR *client_argv[6]; SEC_CHAR *server_argv[] = { ntlm_auth, server_helper_protocol, NULL }; TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n", debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse, pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry); switch(fCredentialUse) { case SECPKG_CRED_INBOUND: if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) != SEC_E_OK) { phCredential = NULL; break; } else { helper->mode = NTLM_SERVER; phCredential->dwUpper = fCredentialUse; phCredential->dwLower = (ULONG_PTR)helper; } ret = SEC_E_OK; break; case SECPKG_CRED_OUTBOUND: { static const char username_arg[] = "--username="; static const char domain_arg[] = "--domain="; static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1"; int unixcp_size; if(pAuthData == NULL) { LPWKSTA_USER_INFO_1 ui = NULL; NET_API_STATUS status; status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui); if (status != NERR_Success || ui == NULL) { ret = SEC_E_NO_CREDENTIALS; phCredential = NULL; break; } username = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(ui->wkui1_username)+1) * sizeof(SEC_WCHAR)); lstrcpyW(username, ui->wkui1_username); /* same for the domain */ domain = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(ui->wkui1_logon_domain)+1) * sizeof(SEC_WCHAR)); lstrcpyW(domain, ui->wkui1_logon_domain); NetApiBufferFree(ui); } else { PSEC_WINNT_AUTH_IDENTITY_W auth_data = (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData; /* Get username and domain from pAuthData */ username = HeapAlloc(GetProcessHeap(), 0, (auth_data->UserLength + 1) * sizeof(SEC_WCHAR)); memcpy(username, auth_data->User, auth_data->UserLength * sizeof(SEC_WCHAR)); username[auth_data->UserLength] = '\0'; domain = HeapAlloc(GetProcessHeap(), 0, (auth_data->DomainLength + 1) * sizeof(SEC_WCHAR)); memcpy(domain, auth_data->Domain, auth_data->DomainLength * sizeof(SEC_WCHAR)); domain[auth_data->DomainLength] = '\0'; } TRACE("Username is %s\n", debugstr_w(username)); unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, username, -1, NULL, 0, NULL, NULL) + sizeof(username_arg); client_user_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size); lstrcpyA(client_user_arg, username_arg); WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, username, -1, client_user_arg + sizeof(username_arg) - 1, unixcp_size - sizeof(username_arg) + 1, NULL, NULL); TRACE("Domain name is %s\n", debugstr_w(domain)); unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domain, -1, NULL, 0, NULL, NULL) + sizeof(domain_arg); client_domain_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size); lstrcpyA(client_domain_arg, domain_arg); WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domain, -1, client_domain_arg + sizeof(domain_arg) - 1, unixcp_size - sizeof(domain) + 1, NULL, NULL); client_argv[0] = ntlm_auth; client_argv[1] = helper_protocol; client_argv[2] = client_user_arg; client_argv[3] = client_domain_arg; client_argv[4] = credentials_argv; client_argv[5] = NULL; if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK) { phCredential = NULL; break; } else { helper->mode = NTLM_CLIENT; if(pAuthData != NULL) { PSEC_WINNT_AUTH_IDENTITY_W auth_data = (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData; if(auth_data->PasswordLength != 0) { helper->pwlen = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, auth_data->Password, auth_data->PasswordLength, NULL, 0, NULL, NULL); helper->password = HeapAlloc(GetProcessHeap(), 0, helper->pwlen); WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, auth_data->Password, auth_data->PasswordLength, helper->password, helper->pwlen, NULL, NULL); } } phCredential->dwUpper = fCredentialUse; phCredential->dwLower = (ULONG_PTR)helper; TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n", phCredential->dwUpper, phCredential->dwLower); } ret = SEC_E_OK; break; } case SECPKG_CRED_BOTH: FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n"); ret = SEC_E_UNSUPPORTED_FUNCTION; phCredential = NULL; break; default: phCredential = NULL; ret = SEC_E_UNKNOWN_CREDENTIALS; } HeapFree(GetProcessHeap(), 0, client_user_arg); HeapFree(GetProcessHeap(), 0, client_domain_arg); HeapFree(GetProcessHeap(), 0, username); HeapFree(GetProcessHeap(), 0, domain); return ret; } /*********************************************************************** * AcquireCredentialsHandleA */ static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA( SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse, PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn, PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry) { SECURITY_STATUS ret; int user_sizeW, domain_sizeW, passwd_sizeW; SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL; PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL; PSEC_WINNT_AUTH_IDENTITY_A identity = NULL; TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n", debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse, pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry); if(pszPackage != NULL) { int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, NULL, 0); package = HeapAlloc(GetProcessHeap(), 0, package_sizeW * sizeof(SEC_WCHAR)); MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW); } if(pAuthData != NULL) { identity = (PSEC_WINNT_AUTH_IDENTITY_A)pAuthData; if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI) { pAuthDataW = HeapAlloc(GetProcessHeap(), 0, sizeof(SEC_WINNT_AUTH_IDENTITY_W)); if(identity->UserLength != 0) { user_sizeW = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User, identity->UserLength, NULL, 0); user = HeapAlloc(GetProcessHeap(), 0, user_sizeW * sizeof(SEC_WCHAR)); MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User, identity->UserLength, user, user_sizeW); } else { user_sizeW = 0; } if(identity->DomainLength != 0) { domain_sizeW = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0); domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW * sizeof(SEC_WCHAR)); MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain, identity->DomainLength, domain, domain_sizeW); } else { domain_sizeW = 0; } if(identity->PasswordLength != 0) { passwd_sizeW = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password, identity->PasswordLength, NULL, 0); passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW * sizeof(SEC_WCHAR)); MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password, identity->PasswordLength, passwd, passwd_sizeW); } else { passwd_sizeW = 0; } pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE; pAuthDataW->User = user; pAuthDataW->UserLength = user_sizeW; pAuthDataW->Domain = domain; pAuthDataW->DomainLength = domain_sizeW; pAuthDataW->Password = passwd; pAuthDataW->PasswordLength = passwd_sizeW; } else { pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity; } } ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse, pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry); HeapFree(GetProcessHeap(), 0, package); HeapFree(GetProcessHeap(), 0, user); HeapFree(GetProcessHeap(), 0, domain); HeapFree(GetProcessHeap(), 0, passwd); if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity) HeapFree(GetProcessHeap(), 0, pAuthDataW); return ret; } /*********************************************************************** * InitializeSecurityContextW */ static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW( PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext, PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry) { SECURITY_STATUS ret; PNegoHelper helper; ULONG ctxt_attr = 0; char* buffer, *want_flags = NULL; PBYTE bin; int buffer_len, bin_len, max_len = NTLM_MAX_BUF; TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext, debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput, Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry); if(!phCredential) return SEC_E_INVALID_HANDLE; /* As the server side of sspi never calls this, make sure that * the handler is a client handler. */ helper = (PNegoHelper)phCredential->dwLower; if(helper->mode != NTLM_CLIENT) { TRACE("Helper mode = %d\n", helper->mode); return SEC_E_INVALID_HANDLE; } /**************************************** * When communicating with the client, there can be the * following reply packets: * YR <base64 blob> should be sent to the server * PW should be sent back to helper with * base64 encoded password * AF <base64 blob> client is done, blob should be * sent to server with KK prefixed * GF <string list> A string list of negotiated flags * GK <base64 blob> base64 encoded session key * BH <char reason> something broke */ /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */ if (pszTargetName) { TRACE("According to a MS whitepaper pszTargetName is ignored.\n"); } if(TargetDataRep == SECURITY_NETWORK_DREP){ TRACE("Setting SECURITY_NETWORK_DREP\n"); } buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF); bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF); if((phContext == NULL) && (pInput == NULL)) { TRACE("First time in ISC()\n"); /* Allocate space for a maximal string of * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL * NTLMSSP_FEATURE_SESSION_KEY" */ want_flags = HeapAlloc(GetProcessHeap(), 0, 73); if(want_flags == NULL) { ret = SEC_E_INSUFFICIENT_MEMORY; goto isc_end; } lstrcpyA(want_flags, "SF"); if(fContextReq & ISC_REQ_CONFIDENTIALITY) { char *ptr; if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SEAL")) == NULL) lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL"); } if(fContextReq & ISC_REQ_CONNECTION) ctxt_attr |= ISC_RET_CONNECTION; if(fContextReq & ISC_REQ_EXTENDED_ERROR) ctxt_attr |= ISC_RET_EXTENDED_ERROR; if(fContextReq & ISC_REQ_INTEGRITY) { char *ptr; if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL) lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN"); } if(fContextReq & ISC_REQ_MUTUAL_AUTH) ctxt_attr |= ISC_RET_MUTUAL_AUTH; if(fContextReq & ISC_REQ_REPLAY_DETECT) { char *ptr; if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL) lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN"); } if(fContextReq & ISC_REQ_SEQUENCE_DETECT) { char *ptr; if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL) lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN"); } if(fContextReq & ISC_REQ_STREAM) FIXME("ISC_REQ_STREAM\n"); if(fContextReq & ISC_REQ_USE_DCE_STYLE) ctxt_attr |= ISC_RET_USED_DCE_STYLE; if(fContextReq & ISC_REQ_DELEGATE) ctxt_attr |= ISC_RET_DELEGATE; /* If no password is given, try to use cached credentials. Fall back to an empty * password if this failed. */ if(helper->password == NULL) { lstrcpynA(buffer, "OK", max_len-1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto isc_end; /* If the helper replied with "PW", using cached credentials failed */ if(!strncmp(buffer, "PW", 2)) { TRACE("Using cached credentials failed. Using empty password.\n"); lstrcpynA(buffer, "PW AA==", max_len-1); } else /* Just do a noop on the next run */ lstrcpynA(buffer, "OK", max_len-1); } else { lstrcpynA(buffer, "PW ", max_len-1); if((ret = encodeBase64((unsigned char*)helper->password, helper->pwlen, buffer+3, max_len-3, &buffer_len)) != SEC_E_OK) { TRACE("Deleting password!\n"); memset(helper->password, 0, helper->pwlen); HeapFree(GetProcessHeap(), 0, helper->password); goto isc_end; } } TRACE("Sending to helper: %s\n", debugstr_a(buffer)); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto isc_end; TRACE("Helper returned %s\n", debugstr_a(buffer)); if(lstrlenA(want_flags) > 2) { TRACE("Want flags are %s\n", debugstr_a(want_flags)); lstrcpynA(buffer, want_flags, max_len-1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto isc_end; if(!strncmp(buffer, "BH", 2)) ERR("Helper doesn't understand new command set. Expect more things to fail.\n"); } lstrcpynA(buffer, "YR", max_len-1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto isc_end; TRACE("%s\n", buffer); if(strncmp(buffer, "YR ", 3) != 0) { /* Something borked */ TRACE("Helper returned %c%c\n", buffer[0], buffer[1]); ret = SEC_E_INTERNAL_ERROR; goto isc_end; } if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len-1, &bin_len)) != SEC_E_OK) goto isc_end; /* put the decoded client blob into the out buffer */ ret = SEC_I_CONTINUE_NEEDED; } else { /* handle second call here */ /* encode server data to base64 */ if (!pInput || !pInput->cBuffers) { ret = SEC_E_INCOMPLETE_MESSAGE; goto isc_end; } if (!pInput->pBuffers[0].pvBuffer) { ret = SEC_E_INTERNAL_ERROR; goto isc_end; } if(pInput->pBuffers[0].cbBuffer > max_len) { TRACE("pInput->pBuffers[0].cbBuffer is: %ld\n", pInput->pBuffers[0].cbBuffer); ret = SEC_E_INVALID_TOKEN; goto isc_end; } else bin_len = pInput->pBuffers[0].cbBuffer; memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len); lstrcpynA(buffer, "TT ", max_len-1); if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3, &buffer_len)) != SEC_E_OK) goto isc_end; TRACE("Server sent: %s\n", debugstr_a(buffer)); /* send TT base64 blob to ntlm_auth */ if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto isc_end; TRACE("Helper replied: %s\n", debugstr_a(buffer)); if( (strncmp(buffer, "KK ", 3) != 0) && (strncmp(buffer, "AF ", 3) !=0)) { TRACE("Helper returned %c%c\n", buffer[0], buffer[1]); ret = SEC_E_INVALID_TOKEN; goto isc_end; } /* decode the blob and send it to server */ if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len, &bin_len)) != SEC_E_OK) { goto isc_end; } phNewContext->dwUpper = ctxt_attr; phNewContext->dwLower = (ULONG_PTR)helper; ret = SEC_E_OK; } /* put the decoded client blob into the out buffer */ if (fContextReq & ISC_REQ_ALLOCATE_MEMORY) { if (pOutput) { pOutput->cBuffers = 1; pOutput->pBuffers[0].pvBuffer = SECUR32_ALLOC(bin_len); pOutput->pBuffers[0].cbBuffer = bin_len; } } if (!pOutput || !pOutput->cBuffers || pOutput->pBuffers[0].cbBuffer < bin_len) { TRACE("out buffer is NULL or has not enough space\n"); ret = SEC_E_BUFFER_TOO_SMALL; goto isc_end; } if (!pOutput->pBuffers[0].pvBuffer) { TRACE("out buffer is NULL\n"); ret = SEC_E_INTERNAL_ERROR; goto isc_end; } pOutput->pBuffers[0].cbBuffer = bin_len; pOutput->pBuffers[0].BufferType = SECBUFFER_DATA; memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len); if(ret == SEC_E_OK) { TRACE("Getting negotiated flags\n"); lstrcpynA(buffer, "GF", max_len - 1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto isc_end; if(buffer_len < 3) { TRACE("No flags negotiated.\n"); helper->neg_flags = 0l; } else { TRACE("Negotiated %s\n", debugstr_a(buffer)); sscanf(buffer + 3, "%lx", &(helper->neg_flags)); TRACE("Stored 0x%08lx as flags\n", helper->neg_flags); } TRACE("Getting session key\n"); lstrcpynA(buffer, "GK", max_len - 1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto isc_end; if(strncmp(buffer, "BH", 2) == 0) { TRACE("No key negotiated.\n"); helper->valid_session_key = FALSE; helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16); /*Generate the dummy session key = MD4(MD4(password))*/ if(helper->password) { SEC_WCHAR *unicode_password; int passwd_lenW; TRACE("Converting password to unicode.\n"); passwd_lenW = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)helper->password, helper->pwlen, NULL, 0); unicode_password = HeapAlloc(GetProcessHeap(), 0, passwd_lenW * sizeof(SEC_WCHAR)); MultiByteToWideChar(CP_ACP, 0, (LPCSTR)helper->password, helper->pwlen, unicode_password, passwd_lenW); SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password, passwd_lenW * sizeof(SEC_WCHAR), helper->session_key); HeapFree(GetProcessHeap(), 0, unicode_password); } else memset(helper->session_key, 0, 16); } else if(strncmp(buffer, "GK ", 3) == 0) { if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len, &bin_len)) != SEC_E_OK) { TRACE("Failed to decode session key\n"); } TRACE("Session key is %s\n", debugstr_a(buffer+3)); helper->valid_session_key = TRUE; helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len); if(!helper->session_key) { TRACE("Failed to allocate memory for session key\n"); ret = SEC_E_INTERNAL_ERROR; goto isc_end; } memcpy(helper->session_key, bin, bin_len); } helper->crypt.ntlm.a4i = SECUR32_arc4Alloc(); SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16); helper->crypt.ntlm.seq_num = 0l; SECUR32_CreateNTLMv2SubKeys(helper); helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc(); helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc(); SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i, (BYTE *)helper->crypt.ntlm2.send_seal_key, 16); SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i, (BYTE *)helper->crypt.ntlm2.recv_seal_key, 16); helper->crypt.ntlm2.send_seq_no = 0l; helper->crypt.ntlm2.recv_seq_no = 0l; } if(ret != SEC_I_CONTINUE_NEEDED) { TRACE("Deleting password!\n"); if(helper->password) memset(helper->password, 0, helper->pwlen); HeapFree(GetProcessHeap(), 0, helper->password); } isc_end: HeapFree(GetProcessHeap(), 0, want_flags); HeapFree(GetProcessHeap(), 0, buffer); HeapFree(GetProcessHeap(), 0, bin); return ret; } /*********************************************************************** * InitializeSecurityContextA */ static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA( PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext, PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry) { SECURITY_STATUS ret; TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext, debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput, Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry); if (phCredential) { SEC_WCHAR *target = NULL; if(pszTargetName != NULL) { int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1, NULL, 0); target = HeapAlloc(GetProcessHeap(), 0, target_size * sizeof(SEC_WCHAR)); MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1, target, target_size); } ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target, fContextReq, Reserved1, TargetDataRep, pInput, Reserved2, phNewContext, pOutput, pfContextAttr, ptsExpiry); HeapFree(GetProcessHeap(), 0, target); } else { ret = SEC_E_INVALID_HANDLE; } return ret; } /*********************************************************************** * AcceptSecurityContext */ static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext( PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput, ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext, PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry) { SECURITY_STATUS ret; char *buffer, *want_flags = NULL; PBYTE bin; int buffer_len, bin_len, max_len = NTLM_MAX_BUF; ULONG ctxt_attr = 0; PNegoHelper helper; TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput, fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr, ptsExpiry); if (!phCredential) return SEC_E_INVALID_HANDLE; helper = (PNegoHelper)phCredential->dwLower; buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF); bin = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF); if(helper->mode != NTLM_SERVER) { ret = SEC_E_INVALID_HANDLE; goto asc_end; } if(TargetDataRep == SECURITY_NETWORK_DREP){ TRACE("Using SECURITY_NETWORK_DREP\n"); } if(phContext == NULL) { /* This is the first call to AcceptSecurityHandle */ if(pInput == NULL) { ret = SEC_E_INCOMPLETE_MESSAGE; goto asc_end; } if(pInput->cBuffers < 1) { ret = SEC_E_INCOMPLETE_MESSAGE; goto asc_end; } if(pInput->pBuffers[0].cbBuffer > max_len) { ret = SEC_E_INVALID_TOKEN; goto asc_end; } else bin_len = pInput->pBuffers[0].cbBuffer; /* Handle all the flags */ want_flags = HeapAlloc(GetProcessHeap(), 0, 73); if(want_flags == NULL) { TRACE("Failed to allocate memory for the want_flags!\n"); ret = SEC_E_INSUFFICIENT_MEMORY; goto asc_end; } lstrcpyA(want_flags, "SF"); if(fContextReq & ASC_REQ_ALLOCATE_MEMORY) { FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n"); } if(fContextReq & ASC_REQ_CONFIDENTIALITY) { lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL"); } if(fContextReq & ASC_REQ_CONNECTION) { /* This is default, so we'll enable it */ lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY"); ctxt_attr |= ASC_RET_CONNECTION; } if(fContextReq & ASC_REQ_EXTENDED_ERROR) { FIXME("ASC_REQ_EXTENDED_ERROR stub\n"); } if(fContextReq & ASC_REQ_INTEGRITY) { lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN"); } if(fContextReq & ASC_REQ_MUTUAL_AUTH) { FIXME("ASC_REQ_MUTUAL_AUTH stub\n"); } if(fContextReq & ASC_REQ_REPLAY_DETECT) { FIXME("ASC_REQ_REPLAY_DETECT stub\n"); } if(fContextReq & ISC_REQ_SEQUENCE_DETECT) { FIXME("ASC_REQ_SEQUENCE_DETECT stub\n"); } if(fContextReq & ISC_REQ_STREAM) { FIXME("ASC_REQ_STREAM stub\n"); } /* Done with the flags */ if(lstrlenA(want_flags) > 3) { TRACE("Server set want_flags: %s\n", debugstr_a(want_flags)); lstrcpynA(buffer, want_flags, max_len - 1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto asc_end; if(!strncmp(buffer, "BH", 2)) TRACE("Helper doesn't understand new command set\n"); } /* This is the YR request from the client, encode to base64 */ memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len); lstrcpynA(buffer, "YR ", max_len-1); if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3, &buffer_len)) != SEC_E_OK) { goto asc_end; } TRACE("Client sent: %s\n", debugstr_a(buffer)); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) { goto asc_end; } TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer)); /* The expected answer is TT <base64 blob> */ if(strncmp(buffer, "TT ", 3) != 0) { ret = SEC_E_INTERNAL_ERROR; goto asc_end; } if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len, &bin_len)) != SEC_E_OK) { goto asc_end; } /* send this to the client */ if(pOutput == NULL) { ret = SEC_E_INSUFFICIENT_MEMORY; goto asc_end; } if(pOutput->cBuffers < 1) { ret = SEC_E_INSUFFICIENT_MEMORY; goto asc_end; } pOutput->pBuffers[0].cbBuffer = bin_len; pOutput->pBuffers[0].BufferType = SECBUFFER_DATA; memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len); ret = SEC_I_CONTINUE_NEEDED; } else { /* we expect a KK request from client */ if(pInput == NULL) { ret = SEC_E_INCOMPLETE_MESSAGE; goto asc_end; } if(pInput->cBuffers < 1) { ret = SEC_E_INCOMPLETE_MESSAGE; goto asc_end; } if(pInput->pBuffers[0].cbBuffer > max_len) { ret = SEC_E_INVALID_TOKEN; goto asc_end; } else bin_len = pInput->pBuffers[0].cbBuffer; memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len); lstrcpynA(buffer, "KK ", max_len-1); if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3, &buffer_len)) != SEC_E_OK) { goto asc_end; } TRACE("Client sent: %s\n", debugstr_a(buffer)); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) { goto asc_end; } TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer)); if(strncmp(buffer, "AF ", 3) != 0) { if(strncmp(buffer, "NA ", 3) == 0) { ret = SEC_E_LOGON_DENIED; goto asc_end; } else { ret = SEC_E_INTERNAL_ERROR; goto asc_end; } } pOutput->pBuffers[0].cbBuffer = 0; ret = SEC_E_OK; TRACE("Getting negotiated flags\n"); lstrcpynA(buffer, "GF", max_len - 1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto asc_end; if(buffer_len < 3) { TRACE("No flags negotiated, or helper does not support GF command\n"); } else { TRACE("Negotiated %s\n", debugstr_a(buffer)); sscanf(buffer + 3, "%lx", &(helper->neg_flags)); TRACE("Stored 0x%08lx as flags\n", helper->neg_flags); } TRACE("Getting session key\n"); lstrcpynA(buffer, "GK", max_len - 1); if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK) goto asc_end; if(buffer_len < 3) TRACE("Helper does not support GK command\n"); else { if(strncmp(buffer, "BH ", 3) == 0) { TRACE("Helper sent %s\n", debugstr_a(buffer+3)); helper->valid_session_key = FALSE; helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16); /*FIXME: Generate the dummy session key = MD4(MD4(password))*/ memset(helper->session_key, 0 , 16); } else if(strncmp(buffer, "GK ", 3) == 0) { if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len, &bin_len)) != SEC_E_OK) { TRACE("Failed to decode session key\n"); } TRACE("Session key is %s\n", debugstr_a(buffer+3)); helper->valid_session_key = TRUE; helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16); if(!helper->session_key) { TRACE("Failed to allocate memory for session key\n"); ret = SEC_E_INTERNAL_ERROR; goto asc_end; } memcpy(helper->session_key, bin, 16); } } helper->crypt.ntlm.a4i = SECUR32_arc4Alloc(); SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16); helper->crypt.ntlm.seq_num = 0l; } phNewContext->dwUpper = ctxt_attr; phNewContext->dwLower = (ULONG_PTR)helper; asc_end: HeapFree(GetProcessHeap(), 0, want_flags); HeapFree(GetProcessHeap(), 0, buffer); HeapFree(GetProcessHeap(), 0, bin); return ret; } /*********************************************************************** * CompleteAuthToken */ static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext, PSecBufferDesc pToken) { /* We never need to call CompleteAuthToken anyway */ TRACE("%p %p\n", phContext, pToken); if (!phContext) return SEC_E_INVALID_HANDLE; return SEC_E_OK; } /*********************************************************************** * DeleteSecurityContext */ static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext) { PNegoHelper helper; TRACE("%p\n", phContext); if (!phContext) return SEC_E_INVALID_HANDLE; helper = (PNegoHelper)phContext->dwLower; phContext->dwUpper = 0; phContext->dwLower = 0; SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i); HeapFree(GetProcessHeap(), 0, helper->session_key); helper->valid_session_key = FALSE; SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i); SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i); HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key); HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key); HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key); HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key); return SEC_E_OK; } /*********************************************************************** * QueryContextAttributesW */ static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext, ULONG ulAttribute, void *pBuffer) { TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer); if (!phContext) return SEC_E_INVALID_HANDLE; switch(ulAttribute) { #define _x(x) case (x) : FIXME(#x" stub\n"); break _x(SECPKG_ATTR_ACCESS_TOKEN); _x(SECPKG_ATTR_AUTHORITY); _x(SECPKG_ATTR_DCE_INFO); case SECPKG_ATTR_FLAGS: { PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer; PNegoHelper helper = (PNegoHelper)phContext->dwLower; spcf->Flags = 0; if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN) spcf->Flags |= ISC_RET_INTEGRITY; if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL) spcf->Flags |= ISC_RET_CONFIDENTIALITY; return SEC_E_OK; } _x(SECPKG_ATTR_KEY_INFO); _x(SECPKG_ATTR_LIFESPAN); _x(SECPKG_ATTR_NAMES); _x(SECPKG_ATTR_NATIVE_NAMES); _x(SECPKG_ATTR_NEGOTIATION_INFO); _x(SECPKG_ATTR_PACKAGE_INFO); _x(SECPKG_ATTR_PASSWORD_EXPIRY); _x(SECPKG_ATTR_SESSION_KEY); case SECPKG_ATTR_SIZES: { PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer; spcs->cbMaxToken = NTLM_MAX_BUF; spcs->cbMaxSignature = 16; spcs->cbBlockSize = 0; spcs->cbSecurityTrailer = 16; return SEC_E_OK; } _x(SECPKG_ATTR_STREAM_SIZES); _x(SECPKG_ATTR_TARGET_INFORMATION); #undef _x default: TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute); } return SEC_E_UNSUPPORTED_FUNCTION; } /*********************************************************************** * QueryContextAttributesA */ static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext, ULONG ulAttribute, void *pBuffer) { return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer); } /*********************************************************************** * ImpersonateSecurityContext */ static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext) { SECURITY_STATUS ret; TRACE("%p\n", phContext); if (phContext) { ret = SEC_E_UNSUPPORTED_FUNCTION; } else { ret = SEC_E_INVALID_HANDLE; } return ret; } /*********************************************************************** * RevertSecurityContext */ static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext) { SECURITY_STATUS ret; TRACE("%p\n", phContext); if (phContext) { ret = SEC_E_UNSUPPORTED_FUNCTION; } else { ret = SEC_E_INVALID_HANDLE; } return ret; } /************************************************************************* * ntlm_GetTokenBufferIndex * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN * Returns index if found or -1 if not found. */ static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage) { UINT i; TRACE("%p\n", pMessage); for( i = 0; i < pMessage->cBuffers; ++i ) { if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN) return i; } return -1; } /*********************************************************************** * ntlm_CreateSignature * As both MakeSignature and VerifySignature need this, but different keys * are needed for NTLMv2, the logic goes into a helper function. * To ensure maximal reusability, we can specify the direction as NTLM_SEND for * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting, * the signature is encrypted after the message was encrypted, so * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to * false. */ static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage, int token_idx, SignDirection direction, BOOL encrypt_sig) { ULONG sign_version = 1; UINT i; PBYTE sig; TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction, encrypt_sig); sig = pMessage->pBuffers[token_idx].pvBuffer; if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN) { BYTE digest[16]; BYTE seq_no[4]; HMAC_MD5_CTX hmac_md5_ctx; TRACE("Signing NTLM2 style\n"); if(direction == NTLM_SEND) { seq_no[0] = (helper->crypt.ntlm2.send_seq_no >> 0) & 0xff; seq_no[1] = (helper->crypt.ntlm2.send_seq_no >> 8) & 0xff; seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff; seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff; ++(helper->crypt.ntlm2.send_seq_no); HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16); } else { seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >> 0) & 0xff; seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >> 8) & 0xff; seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff; seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff; ++(helper->crypt.ntlm2.recv_seq_no); HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16); } HMACMD5Update(&hmac_md5_ctx, seq_no, 4); for( i = 0; i < pMessage->cBuffers; ++i ) { if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA) HMACMD5Update(&hmac_md5_ctx, (BYTE *)pMessage->pBuffers[i].pvBuffer, pMessage->pBuffers[i].cbBuffer); } HMACMD5Final(&hmac_md5_ctx, digest); if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE) { if(direction == NTLM_SEND) SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8); else SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8); } /* The NTLM2 signature is the sign version */ sig[ 0] = (sign_version >> 0) & 0xff; sig[ 1] = (sign_version >> 8) & 0xff; sig[ 2] = (sign_version >> 16) & 0xff; sig[ 3] = (sign_version >> 24) & 0xff; /* The first 8 bytes of the digest */ memcpy(sig+4, digest, 8); /* And the sequence number */ memcpy(sig+12, seq_no, 4); pMessage->pBuffers[token_idx].cbBuffer = 16; return SEC_E_OK; } if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN) { ULONG crc = 0U; TRACE("Signing NTLM1 style\n"); for(i=0; i < pMessage->cBuffers; ++i) { if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA) { crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer, pMessage->pBuffers[i].cbBuffer, crc); } } sig[ 0] = (sign_version >> 0) & 0xff; sig[ 1] = (sign_version >> 8) & 0xff; sig[ 2] = (sign_version >> 16) & 0xff; sig[ 3] = (sign_version >> 24) & 0xff; memset(sig+4, 0, 4); sig[ 8] = (crc >> 0) & 0xff; sig[ 9] = (crc >> 8) & 0xff; sig[10] = (crc >> 16) & 0xff; sig[11] = (crc >> 24) & 0xff; sig[12] = (helper->crypt.ntlm.seq_num >> 0) & 0xff; sig[13] = (helper->crypt.ntlm.seq_num >> 8) & 0xff; sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff; sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff; ++(helper->crypt.ntlm.seq_num); if(encrypt_sig) SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12); return SEC_E_OK; } if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0) { TRACE("Creating a dummy signature.\n"); /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */ memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16); memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1); pMessage->pBuffers[token_idx].cbBuffer = 16; return SEC_E_OK; } return SEC_E_UNSUPPORTED_FUNCTION; } /*********************************************************************** * MakeSignature */ static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo) { PNegoHelper helper; int token_idx; TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo); if (!phContext) return SEC_E_INVALID_HANDLE; if(fQOP) FIXME("Ignoring fQOP 0x%08x\n", fQOP); if(MessageSeqNo) FIXME("Ignoring MessageSeqNo\n"); if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2) return SEC_E_INVALID_TOKEN; /* If we didn't find a SECBUFFER_TOKEN type buffer */ if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1) return SEC_E_INVALID_TOKEN; if(pMessage->pBuffers[token_idx].cbBuffer < 16) return SEC_E_BUFFER_TOO_SMALL; helper = (PNegoHelper)phContext->dwLower; TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags); return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE); } /*********************************************************************** * VerifySignature */ static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext, PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP) { PNegoHelper helper; ULONG fQOP = 0; UINT i; int token_idx; SECURITY_STATUS ret; SecBufferDesc local_desc; PSecBuffer local_buff; BYTE local_sig[16]; TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP); if(!phContext) return SEC_E_INVALID_HANDLE; if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2) return SEC_E_INVALID_TOKEN; if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1) return SEC_E_INVALID_TOKEN; if(pMessage->pBuffers[token_idx].cbBuffer < 16) return SEC_E_BUFFER_TOO_SMALL; if(MessageSeqNo) FIXME("Ignoring MessageSeqNo\n"); helper = (PNegoHelper)phContext->dwLower; TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags); local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer)); local_desc.ulVersion = SECBUFFER_VERSION; local_desc.cBuffers = pMessage->cBuffers; local_desc.pBuffers = local_buff; for(i=0; i < pMessage->cBuffers; ++i) { if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN) { local_buff[i].BufferType = SECBUFFER_TOKEN; local_buff[i].cbBuffer = 16; local_buff[i].pvBuffer = local_sig; } else { local_buff[i].BufferType = pMessage->pBuffers[i].BufferType; local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer; local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer; } } if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK) return ret; if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8, ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8)) ret = SEC_E_MESSAGE_ALTERED; else ret = SEC_E_OK; HeapFree(GetProcessHeap(), 0, local_buff); pfQOP = &fQOP; return ret; } /*********************************************************************** * FreeCredentialsHandle */ static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle( PCredHandle phCredential) { SECURITY_STATUS ret; if(phCredential){ PNegoHelper helper = (PNegoHelper) phCredential->dwLower; phCredential->dwUpper = 0; phCredential->dwLower = 0; cleanup_helper(helper); ret = SEC_E_OK; } else ret = SEC_E_OK; return ret; } /*********************************************************************** * EncryptMessage */ static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo) { PNegoHelper helper; int token_idx; TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo); if(!phContext) return SEC_E_INVALID_HANDLE; if(fQOP) FIXME("Ignoring fQOP\n"); if(MessageSeqNo) FIXME("Ignoring MessageSeqNo\n"); if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2) return SEC_E_INVALID_TOKEN; if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1) return SEC_E_INVALID_TOKEN; if(pMessage->pBuffers[token_idx].cbBuffer < 16) return SEC_E_BUFFER_TOO_SMALL; helper = (PNegoHelper) phContext->dwLower; if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL) { ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE); SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, (BYTE *)pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer); if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE) SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8); return SEC_E_OK; } else { PBYTE sig; ULONG save_flags; /* EncryptMessage always produces real signatures, so make sure * NTLMSSP_NEGOTIATE_SIGN is set*/ save_flags = helper->neg_flags; helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN; ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE); helper->neg_flags = save_flags; sig = pMessage->pBuffers[token_idx].pvBuffer; SECUR32_arc4Process(helper->crypt.ntlm.a4i, pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer); SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12); if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0) memset(sig+4, 0, 4); } return SEC_E_OK; } /*********************************************************************** * DecryptMessage */ static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext, PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP) { SECURITY_STATUS ret; ULONG ntlmssp_flags_save; PNegoHelper helper; int token_idx; TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP); if(!phContext) return SEC_E_INVALID_HANDLE; if(MessageSeqNo) FIXME("Ignoring MessageSeqNo\n"); if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2) return SEC_E_INVALID_TOKEN; if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1) return SEC_E_INVALID_TOKEN; if(pMessage->pBuffers[token_idx].cbBuffer < 16) return SEC_E_BUFFER_TOO_SMALL; helper = (PNegoHelper) phContext->dwLower; if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL) { SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer); } else { SECUR32_arc4Process(helper->crypt.ntlm.a4i, pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer); } /* Make sure we use a session key for the signature check, EncryptMessage * always does that, even in the dummy case */ ntlmssp_flags_save = helper->neg_flags; helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN; ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP); helper->neg_flags = ntlmssp_flags_save; return ret; } static const SecurityFunctionTableA ntlmTableA = { 1, NULL, /* EnumerateSecurityPackagesA */ ntlm_QueryCredentialsAttributesA, /* QueryCredentialsAttributesA */ ntlm_AcquireCredentialsHandleA, /* AcquireCredentialsHandleA */ ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */ NULL, /* Reserved2 */ ntlm_InitializeSecurityContextA, /* InitializeSecurityContextA */ ntlm_AcceptSecurityContext, /* AcceptSecurityContext */ ntlm_CompleteAuthToken, /* CompleteAuthToken */ ntlm_DeleteSecurityContext, /* DeleteSecurityContext */ NULL, /* ApplyControlToken */ ntlm_QueryContextAttributesA, /* QueryContextAttributesA */ ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */ ntlm_RevertSecurityContext, /* RevertSecurityContext */ ntlm_MakeSignature, /* MakeSignature */ ntlm_VerifySignature, /* VerifySignature */ FreeContextBuffer, /* FreeContextBuffer */ NULL, /* QuerySecurityPackageInfoA */ NULL, /* Reserved3 */ NULL, /* Reserved4 */ NULL, /* ExportSecurityContext */ NULL, /* ImportSecurityContextA */ NULL, /* AddCredentialsA */ NULL, /* Reserved8 */ NULL, /* QuerySecurityContextToken */ ntlm_EncryptMessage, /* EncryptMessage */ ntlm_DecryptMessage, /* DecryptMessage */ NULL, /* SetContextAttributesA */ }; static const SecurityFunctionTableW ntlmTableW = { 1, NULL, /* EnumerateSecurityPackagesW */ ntlm_QueryCredentialsAttributesW, /* QueryCredentialsAttributesW */ ntlm_AcquireCredentialsHandleW, /* AcquireCredentialsHandleW */ ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */ NULL, /* Reserved2 */ ntlm_InitializeSecurityContextW, /* InitializeSecurityContextW */ ntlm_AcceptSecurityContext, /* AcceptSecurityContext */ ntlm_CompleteAuthToken, /* CompleteAuthToken */ ntlm_DeleteSecurityContext, /* DeleteSecurityContext */ NULL, /* ApplyControlToken */ ntlm_QueryContextAttributesW, /* QueryContextAttributesW */ ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */ ntlm_RevertSecurityContext, /* RevertSecurityContext */ ntlm_MakeSignature, /* MakeSignature */ ntlm_VerifySignature, /* VerifySignature */ FreeContextBuffer, /* FreeContextBuffer */ NULL, /* QuerySecurityPackageInfoW */ NULL, /* Reserved3 */ NULL, /* Reserved4 */ NULL, /* ExportSecurityContext */ NULL, /* ImportSecurityContextW */ NULL, /* AddCredentialsW */ NULL, /* Reserved8 */ NULL, /* QuerySecurityContextToken */ ntlm_EncryptMessage, /* EncryptMessage */ ntlm_DecryptMessage, /* DecryptMessage */ NULL, /* SetContextAttributesW */ }; #define NTLM_COMMENT \ { 'N', 'T', 'L', 'M', ' ', \ 'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \ 'P', 'a', 'c', 'k', 'a', 'g', 'e', 0} static CHAR ntlm_comment_A[] = NTLM_COMMENT; static WCHAR ntlm_comment_W[] = NTLM_COMMENT; #define NTLM_NAME {'N', 'T', 'L', 'M', 0} static char ntlm_name_A[] = NTLM_NAME; static WCHAR ntlm_name_W[] = NTLM_NAME; /* According to Windows, NTLM has the following capabilities. */ #define CAPS ( \ SECPKG_FLAG_INTEGRITY | \ SECPKG_FLAG_PRIVACY | \ SECPKG_FLAG_TOKEN_ONLY | \ SECPKG_FLAG_CONNECTION | \ SECPKG_FLAG_MULTI_REQUIRED | \ SECPKG_FLAG_IMPERSONATION | \ SECPKG_FLAG_ACCEPT_WIN32_NAME | \ SECPKG_FLAG_READONLY_WITH_CHECKSUM) static const SecPkgInfoW infoW = { CAPS, 1, RPC_C_AUTHN_WINNT, NTLM_MAX_BUF, ntlm_name_W, ntlm_comment_W }; static const SecPkgInfoA infoA = { CAPS, 1, RPC_C_AUTHN_WINNT, NTLM_MAX_BUF, ntlm_name_A, ntlm_comment_A }; void SECUR32_initNTLMSP(void) { SECURITY_STATUS ret; PNegoHelper helper; static CHAR version[] = "--version"; SEC_CHAR *args[] = { ntlm_auth, version, NULL }; if((ret = fork_helper(&helper, ntlm_auth, args)) != SEC_E_OK) { /* Cheat and allocate a helper anyway, so cleanup later will work. */ helper = HeapAlloc(GetProcessHeap(),0, sizeof(PNegoHelper)); helper->major = helper->minor = helper->micro = -1; } else check_version(helper); if( (helper->major > MIN_NTLM_AUTH_MAJOR_VERSION) || (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION && helper->minor > MIN_NTLM_AUTH_MINOR_VERSION) || (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION && helper->minor == MIN_NTLM_AUTH_MINOR_VERSION && helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) ) { SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL); SECUR32_addPackages(provider, 1L, &infoA, &infoW); } else { ERR("%s was not found or is outdated. " "Make sure that ntlm_auth >= %d.%d.%d is in your path.\n", ntlm_auth, MIN_NTLM_AUTH_MAJOR_VERSION, MIN_NTLM_AUTH_MINOR_VERSION, MIN_NTLM_AUTH_MICRO_VERSION); } cleanup_helper(helper); }