103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
/* setpwd.cc: Set LSA private data password for current user.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifdef __OUTSIDE_CYGWIN__
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#include "woutsup.h"
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#include <errno.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <wchar.h>
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#include <ntsecapi.h>
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#include <ntdef.h>
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#include "ntdll.h"
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#include "cygserver.h"
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#include "process.h"
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#include "transport.h"
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#include "cygserver_setpwd.h"
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client_request_setpwd::client_request_setpwd ()
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: client_request (CYGSERVER_REQUEST_SETPWD,
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&_parameters, sizeof (_parameters))
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{
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}
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void
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client_request_setpwd::serve (transport_layer_base *const conn,
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process_cache *const cache)
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{
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HANDLE tok;
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PTOKEN_USER user;
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WCHAR sidbuf[128], key_name [128 + wcslen (CYGWIN_LSA_KEY_PREFIX)];
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UNICODE_STRING sid, key, data;
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syscall_printf ("Request to set private data");
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if (msglen () != sizeof (_parameters.in))
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{
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syscall_printf ("bad request body length: expecting %lu bytes, got %lu",
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sizeof (_parameters), msglen ());
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error_code (EINVAL);
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msglen (0);
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return;
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}
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msglen (0);
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if (!conn->impersonate_client ())
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{
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error_code (EACCES);
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return;
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}
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if (!OpenThreadToken (GetCurrentThread (), TOKEN_READ, TRUE, &tok))
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{
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conn->revert_to_self ();
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error_code (EACCES);
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return;
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}
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/* Get uid from user SID in token. */
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user = (PTOKEN_USER) get_token_info (tok, TokenUser);
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CloseHandle (tok);
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conn->revert_to_self ();
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if (!user)
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{
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error_code (EACCES);
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return;
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}
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LSA_OBJECT_ATTRIBUTES oa = { 0, 0, 0, 0, 0, 0 };
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HANDLE lsa;
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NTSTATUS status = LsaOpenPolicy (NULL, &oa, POLICY_CREATE_SECRET, &lsa);
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if (!NT_SUCCESS (status))
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{
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error_code (LsaNtStatusToWinError (status));
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return;
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}
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RtlInitEmptyUnicodeString (&sid, sidbuf, sizeof sidbuf);
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RtlConvertSidToUnicodeString (&sid, user->User.Sid, FALSE);
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free (user);
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RtlInitEmptyUnicodeString (&key, key_name, sizeof key_name);
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RtlAppendUnicodeToString (&key, CYGWIN_LSA_KEY_PREFIX);
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RtlAppendUnicodeStringToString (&key, &sid);
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RtlInitUnicodeString (&data, _parameters.in.passwd);
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status = LsaStorePrivateData (lsa, &key, data.Length ? &data : NULL);
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if (data.Length)
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RtlSecureZeroMemory (data.Buffer, data.Length);
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/* Success or we're trying to remove a password entry which doesn't exist. */
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if (NT_SUCCESS (status)
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|| (data.Length == 0 && status == STATUS_OBJECT_NAME_NOT_FOUND))
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error_code (0);
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else
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error_code (LsaNtStatusToWinError (status));
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syscall_printf ("Request to set private data returns error %d", error_code ());
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LsaClose (lsa);
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}
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#endif /* __OUTSIDE_CYGWIN__ */
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