559 lines
20 KiB
C
559 lines
20 KiB
C
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/*++
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Copyright (C) Microsoft Corporation, 1999
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Module Name:
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mschapp - MS-CHAP Password Change API
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Abstract:
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These APIs correspond to the MS-CHAP RFC -2433 sections 9 and 10. In order
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to develop an MS-CHAP RAS server that works with an NT domain, these APIs
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are required.
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The MS-CHAP change password APIs are exposed through a DLL that is obtained
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from PSS. This DLL is not distributed with NT4.0 or Win2000. It is up to
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the ISV to install this with their product. The DLL name is MSCHAPP.DLL.
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Only wide (Unicode) versions of these apis will be available. These are the
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2 callable APIs:
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* MSChapSrvChangePassword
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* MsChapSrvChangePassword2
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--*/
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#define UNICODE
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#define _UNICODE
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include <ntsam.h>
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#include <ntsamp.h>
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#include <ntlsa.h>
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#include <mschapp.h>
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//////////////////////////////////////////////////////////////
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// //
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// //
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// Exported MSChap change password Functions //
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// //
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// //
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//////////////////////////////////////////////////////////////
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//critical section for MSChap change password functions
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CRITICAL_SECTION MSChapChangePassword;
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//function pointers for MSChap Functions
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HINSTANCE hSamlib = NULL;
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typedef NTSTATUS(* FNSAMCONNECT)(PUNICODE_STRING,
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PSAM_HANDLE,
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ACCESS_MASK,
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POBJECT_ATTRIBUTES);
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typedef NTSTATUS(* FNSAMOPENDOMAIN)(SAM_HANDLE,
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ACCESS_MASK,
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PSID,
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PSAM_HANDLE);
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typedef NTSTATUS(* FNSAMLOOKUPNAMESINDOMAIN)(SAM_HANDLE,ULONG,PUNICODE_STRING,
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PULONG*,PSID_NAME_USE *);
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typedef NTSTATUS(* FNSAMOPENUSER)(SAM_HANDLE,ACCESS_MASK,ULONG,PSAM_HANDLE);
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typedef NTSTATUS(* FNSAMICHANGEPASSWORDUSER)(SAM_HANDLE,BOOLEAN,PLM_OWF_PASSWORD,PLM_OWF_PASSWORD,
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BOOLEAN,PNT_OWF_PASSWORD,PNT_OWF_PASSWORD);
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typedef NTSTATUS(* FNSAMICHANGEPASSWORDUSER2)(PUNICODE_STRING,
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PUNICODE_STRING,
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PSAMPR_ENCRYPTED_USER_PASSWORD,
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PENCRYPTED_NT_OWF_PASSWORD,
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BOOLEAN,PSAMPR_ENCRYPTED_USER_PASSWORD,
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PENCRYPTED_LM_OWF_PASSWORD);
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typedef NTSTATUS(* FNSAMCLOSEHANDLE)(SAM_HANDLE);
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typedef NTSTATUS(* FNSAMFREEMEMORY)(PVOID);
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FNSAMCONNECT FnSamConnect = NULL;
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FNSAMOPENDOMAIN FnSamOpenDomain = NULL;
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FNSAMLOOKUPNAMESINDOMAIN FnSamLookupNamesInDomain = NULL;
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FNSAMOPENUSER FnSamOpenUser = NULL;
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FNSAMICHANGEPASSWORDUSER FnSamiChangePasswordUser = NULL;
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FNSAMICHANGEPASSWORDUSER2 FnSamiChangePasswordUser2 = NULL;
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FNSAMCLOSEHANDLE FnSamCloseHandle = NULL;
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FNSAMFREEMEMORY FnSamFreeMemory = NULL;
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/*++
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MSChapSrvChangePassword:
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Changes the password of a user account. Password will be set to
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NewPassword only if OldPassword matches the current user password for this
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user and there are no restrictions on using the new password. This call
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allows users to change their own password if they have access
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USER_CHANGE_PASSWORD. Password update restrictions apply.
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Arguments:
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ServerName - The server to operate on, or NULL for this machine.
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UserName - Name of user whose password is to be changed
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LMOldPresent - TRUE if the LmOldOwfPassword is valid. This should only be
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FALSE if the old password is too long to be represented by a LM
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password (Complex NT password). Note the LMNewOwfPassword must always
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be valid. If the new password is complex, the LMNewOwfPassword should
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be the well-known LM OWF of a NULL password.
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LmOldOwfPassword - One-way-function of the current LM password for the
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user. Ignored if LmOldPresent == FALSE
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LmNewOwfPassword - One-way-function of the new LM password for the user.
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NtOldOwfPassword - One-way-function of the current NT password for the
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user.
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NtNewOwfPassword - One-way-function of the new NT password for the user.
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Return Value:
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STATUS_SUCCESS - The Service completed successfully.
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STATUS_ACCESS_DENIED - Caller does not have the appropriate access to
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complete the operation.
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STATUS_INVALID_HANDLE - The supplied server or username was not valid.
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STATUS_ILL_FORMED_PASSWORD - The new password is poorly formed, e.g.
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contains characters that can't be entered from the keyboard, etc.
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STATUS_PASSWORD_RESTRICTION - A restriction prevents the password from
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being changed. This may be for a number of reasons, including time
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restrictions on how often a password may be changed or length
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restrictions on the provided password. This error might also be
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returned if the new password matched a password in the recent history
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log for the account. Security administrators indicate how many of the
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most recently used passwords may not be re-used. These are kept in
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the password recent history log.
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STATUS_WRONG_PASSWORD - OldPassword does not contain the user's current
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password.
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STATUS_INVALID_DOMAIN_STATE - The domain server is not in the correct
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state (disabled or enabled) to perform the requested operation. The
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domain server must be enabled for this operation
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STATUS_INVALID_DOMAIN_ROLE - The domain server is serving the incorrect
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role (primary or backup) to perform the requested operation.
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STATUS_INVALID_PARAMETER_MIX - LmOldPresent or NtPresent or both must be
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TRUE.
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--*/
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WINADVAPI DWORD WINAPI
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MSChapSrvChangePassword(
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IN LPWSTR ServerName,
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IN LPWSTR UserName,
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IN BOOLEAN LmOldPresent,
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IN PLM_OWF_PASSWORD LmOldOwfPassword,
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IN PLM_OWF_PASSWORD LmNewOwfPassword,
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IN PNT_OWF_PASSWORD NtOldOwfPassword,
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IN PNT_OWF_PASSWORD NtNewOwfPassword)
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{
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NTSTATUS Status=STATUS_SUCCESS;
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DWORD WinErr=ERROR_SUCCESS;
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OBJECT_ATTRIBUTES oa;
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UNICODE_STRING UnicodeName;
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SAM_HANDLE SamHandle = NULL;
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SAM_HANDLE DomainHandle = NULL;
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SAM_HANDLE UserHandle = NULL;
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LSA_HANDLE LsaHandle = NULL;
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PPOLICY_ACCOUNT_DOMAIN_INFO DomainInfo = NULL;
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PULONG RelativeIds = NULL;
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PSID_NAME_USE Use = NULL;
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if (NULL == UserName || NULL == LmOldOwfPassword || NULL == LmNewOwfPassword ||
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NULL == NtOldOwfPassword || NULL == NtNewOwfPassword) {
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WinErr = ERROR_INVALID_PARAMETER;
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goto Cleanup;
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}
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//
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// Initialization.
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//
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if ( hSamlib == NULL )
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{
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RtlEnterCriticalSection( &MSChapChangePassword );
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if ( hSamlib == NULL )
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{
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hSamlib = LoadLibrary(L"samlib.dll");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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if (hSamlib != NULL) {
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FnSamConnect = (FNSAMCONNECT) GetProcAddress(hSamlib,
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"SamConnect");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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FnSamOpenDomain = (FNSAMOPENDOMAIN) GetProcAddress(hSamlib,
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"SamOpenDomain");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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FnSamLookupNamesInDomain = (FNSAMLOOKUPNAMESINDOMAIN) GetProcAddress(hSamlib,
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"SamLookupNamesInDomain");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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FnSamOpenUser = (FNSAMOPENUSER) GetProcAddress(hSamlib,
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"SamOpenUser");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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FnSamCloseHandle = (FNSAMCLOSEHANDLE) GetProcAddress(hSamlib,
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"SamCloseHandle");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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FnSamFreeMemory = (FNSAMFREEMEMORY) GetProcAddress(hSamlib,
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"SamFreeMemory");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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FnSamiChangePasswordUser = (FNSAMICHANGEPASSWORDUSER) GetProcAddress(hSamlib,
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"SamiChangePasswordUser");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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FnSamiChangePasswordUser2 = (FNSAMICHANGEPASSWORDUSER2) GetProcAddress(hSamlib,
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"SamiChangePasswordUser2");
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WinErr = GetLastError();
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if (ERROR_SUCCESS != WinErr) {
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goto Cleanup;
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}
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}
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}
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RtlLeaveCriticalSection( &MSChapChangePassword );
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}
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RtlInitUnicodeString(&UnicodeName, ServerName);
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InitializeObjectAttributes(&oa, NULL, 0, NULL, NULL);
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//
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// Connect to the LSA on the server
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//
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Status = LsaOpenPolicy(
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&UnicodeName,
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&oa,
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POLICY_VIEW_LOCAL_INFORMATION,
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&LsaHandle);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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Status = LsaQueryInformationPolicy(
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LsaHandle,
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PolicyAccountDomainInformation,
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(PVOID *)&DomainInfo);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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Status = FnSamConnect(
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&UnicodeName,
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&SamHandle,
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SAM_SERVER_LOOKUP_DOMAIN,
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&oa);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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Status = FnSamOpenDomain(
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SamHandle,
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DOMAIN_LOOKUP | DOMAIN_READ_PASSWORD_PARAMETERS | DOMAIN_READ_PASSWORD_PARAMETERS,
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DomainInfo->DomainSid,
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&DomainHandle);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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RtlInitUnicodeString(
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&UnicodeName,
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UserName);
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Status = FnSamLookupNamesInDomain(
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DomainHandle,
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1,
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&UnicodeName,
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&RelativeIds,
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&Use);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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if (Use[0] != SidTypeUser)
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{
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WinErr = ERROR_INVALID_SID;
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goto Cleanup;
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}
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Status = FnSamOpenUser(
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DomainHandle,
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USER_CHANGE_PASSWORD,
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RelativeIds[0],
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&UserHandle);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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Status = FnSamiChangePasswordUser(
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UserHandle,
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LmOldPresent, // Only false if Old password too complex
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LmOldOwfPassword,
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LmNewOwfPassword,
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TRUE, // NT password present
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NtOldOwfPassword,
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NtNewOwfPassword);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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Cleanup:
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if (LsaHandle != NULL)
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{
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LsaClose(LsaHandle);
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}
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if (UserHandle != NULL)
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{
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FnSamCloseHandle(UserHandle);
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}
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if (DomainHandle != NULL)
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{
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FnSamCloseHandle(DomainHandle);
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}
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if (SamHandle != NULL)
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{
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FnSamCloseHandle(SamHandle);
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}
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if (DomainInfo != NULL)
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{
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LsaFreeMemory(DomainInfo);
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}
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if (RelativeIds != NULL)
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{
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FnSamFreeMemory(RelativeIds);
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}
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if (Use != NULL)
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{
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FnSamFreeMemory(Use);
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}
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if (ERROR_SUCCESS != WinErr) {
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return WinErr;
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}
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return RtlNtStatusToDosError(Status);
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}
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|
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/*++
|
||
|
|
|
||
|
|
MSChapSrvChangePassword2:
|
||
|
|
|
||
|
|
Changes the password of a user account. Password will be set to
|
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|
|
NewPassword only if OldPassword matches the current user password for this
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||
|
|
user and there are no restrictions on using the new password. This call
|
||
|
|
allows users to change their own password if they have access
|
||
|
|
USER_CHANGE_PASSWORD. Password update restrictions apply.
|
||
|
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|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
ServerName - The server to operate on, or NULL for this machine.
|
||
|
|
|
||
|
|
UserName - Name of user whose password is to be changed
|
||
|
|
|
||
|
|
NewPasswordEncryptedWithOldNt - The new cleartext password encrypted with
|
||
|
|
the old NT OWF password.
|
||
|
|
|
||
|
|
OldNtOwfPasswordEncryptedWithNewNt - The old NT OWF password encrypted
|
||
|
|
with the new NT OWF password.
|
||
|
|
|
||
|
|
LmPresent - If TRUE, indicates that the following two last parameter was
|
||
|
|
encrypted with the LM OWF password not the NT OWF password.
|
||
|
|
|
||
|
|
NewPasswordEncryptedWithOldLm - The new cleartext password encrypted with
|
||
|
|
the old LM OWF password.
|
||
|
|
|
||
|
|
OldLmOwfPasswordEncryptedWithNewLmOrNt - The old LM OWF password encrypted
|
||
|
|
with the new LM OWF password.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
STATUS_SUCCESS - The Service completed successfully.
|
||
|
|
|
||
|
|
STATUS_ACCESS_DENIED - Caller does not have the appropriate access to
|
||
|
|
complete the operation.
|
||
|
|
|
||
|
|
STATUS_INVALID_HANDLE - The supplied server or username was not valid.
|
||
|
|
|
||
|
|
STATUS_ILL_FORMED_PASSWORD - The new password is poorly formed, e.g.
|
||
|
|
contains characters that can't be entered from the keyboard, etc.
|
||
|
|
|
||
|
|
STATUS_PASSWORD_RESTRICTION - A restriction prevents the password from
|
||
|
|
being changed. This may be for a number of reasons, including time
|
||
|
|
restrictions on how often a password may be changed or length
|
||
|
|
restrictions on the provided password. This error might also be
|
||
|
|
returned if the new password matched a password in the recent history
|
||
|
|
log for the account. Security administrators indicate how many of the
|
||
|
|
most recently used passwords may not be re-used. These are kept in
|
||
|
|
the password recent history log.
|
||
|
|
|
||
|
|
STATUS_WRONG_PASSWORD - OldPassword does not contain the user's current
|
||
|
|
password.
|
||
|
|
|
||
|
|
STATUS_INVALID_DOMAIN_STATE - The domain server is not in the correct
|
||
|
|
state (disabled or enabled) to perform the requested operation. The
|
||
|
|
domain server must be enabled for this operation.
|
||
|
|
|
||
|
|
STATUS_INVALID_DOMAIN_ROLE - The domain server is serving the incorrect
|
||
|
|
role (primary or backup) to perform the requested operation.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
WINADVAPI DWORD WINAPI
|
||
|
|
MSChapSrvChangePassword2(
|
||
|
|
IN LPWSTR ServerName,
|
||
|
|
IN LPWSTR UserName,
|
||
|
|
IN PSAMPR_ENCRYPTED_USER_PASSWORD NewPasswordEncryptedWithOldNt,
|
||
|
|
IN PENCRYPTED_NT_OWF_PASSWORD OldNtOwfPasswordEncryptedWithNewNt,
|
||
|
|
IN BOOLEAN LmPresent,
|
||
|
|
IN PSAMPR_ENCRYPTED_USER_PASSWORD NewPasswordEncryptedWithOldLm,
|
||
|
|
IN PENCRYPTED_LM_OWF_PASSWORD OldLmOwfPasswordEncryptedWithNewLmOrNt)
|
||
|
|
{
|
||
|
|
UNICODE_STRING UnicodeServer;
|
||
|
|
UNICODE_STRING UnicodeUser;
|
||
|
|
DWORD WinErr = ERROR_SUCCESS;
|
||
|
|
|
||
|
|
if (NULL == UserName || NULL == NewPasswordEncryptedWithOldNt ||
|
||
|
|
NULL == NewPasswordEncryptedWithOldLm || NULL ==OldNtOwfPasswordEncryptedWithNewNt ||
|
||
|
|
NULL == OldLmOwfPasswordEncryptedWithNewLmOrNt) {
|
||
|
|
WinErr = ERROR_INVALID_PARAMETER;
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Initialization.
|
||
|
|
//
|
||
|
|
|
||
|
|
if ( hSamlib == NULL )
|
||
|
|
{
|
||
|
|
RtlEnterCriticalSection( &MSChapChangePassword );
|
||
|
|
|
||
|
|
if ( hSamlib == NULL )
|
||
|
|
{
|
||
|
|
hSamlib = LoadLibrary(L"samlib.dll");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
if (hSamlib != NULL) {
|
||
|
|
|
||
|
|
FnSamConnect = (FNSAMCONNECT) GetProcAddress(hSamlib,
|
||
|
|
"SamConnect");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
FnSamOpenDomain = (FNSAMOPENDOMAIN) GetProcAddress(hSamlib,
|
||
|
|
"SamOpenDomain");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
FnSamLookupNamesInDomain = (FNSAMLOOKUPNAMESINDOMAIN) GetProcAddress(hSamlib,
|
||
|
|
"SamLookupNamesInDomain");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
FnSamOpenUser = (FNSAMOPENUSER) GetProcAddress(hSamlib,
|
||
|
|
"SamOpenUser");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
FnSamCloseHandle = (FNSAMCLOSEHANDLE) GetProcAddress(hSamlib,
|
||
|
|
"SamCloseHandle");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
FnSamFreeMemory = (FNSAMFREEMEMORY) GetProcAddress(hSamlib,
|
||
|
|
"SamFreeMemory");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
FnSamiChangePasswordUser = (FNSAMICHANGEPASSWORDUSER) GetProcAddress(hSamlib,
|
||
|
|
"SamiChangePasswordUser");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
FnSamiChangePasswordUser2 = (FNSAMICHANGEPASSWORDUSER2) GetProcAddress(hSamlib,
|
||
|
|
"SamiChangePasswordUser2");
|
||
|
|
WinErr = GetLastError();
|
||
|
|
if (ERROR_SUCCESS != WinErr) {
|
||
|
|
goto Cleanup;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
RtlLeaveCriticalSection( &MSChapChangePassword );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
RtlInitUnicodeString(&UnicodeServer, ServerName);
|
||
|
|
RtlInitUnicodeString(&UnicodeUser, UserName);
|
||
|
|
|
||
|
|
return RtlNtStatusToDosError(FnSamiChangePasswordUser2(&UnicodeServer,
|
||
|
|
&UnicodeUser,
|
||
|
|
NewPasswordEncryptedWithOldNt,
|
||
|
|
OldNtOwfPasswordEncryptedWithNewNt,
|
||
|
|
LmPresent,
|
||
|
|
NewPasswordEncryptedWithOldLm,
|
||
|
|
OldLmOwfPasswordEncryptedWithNewLmOrNt));
|
||
|
|
|
||
|
|
Cleanup:
|
||
|
|
return WinErr;
|
||
|
|
|
||
|
|
}
|