dlls/dhcpcsvc/dhcpcsvc.c

   1 /*
   2  * Copyright 2011 Stefan Leichter
   3  * Copyright 2019 Hans Leidekker for CodeWeavers
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include <stdarg.h>
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "dhcpcsdk.h"
  24 #include "winioctl.h"
  25 #define WINE_MOUNTMGR_EXTENSIONS
  26 #include "ddk/mountmgr.h"
  27
  28 #include "wine/debug.h"
  29 #include "wine/heap.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(dhcpcsvc);
  32
  33 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
  34 {
  35     TRACE("%p, %u, %p\n", hinst, reason, reserved);
  36
  37     switch (reason)
  38     {
  39         case DLL_WINE_PREATTACH:
  40             return FALSE;    /* prefer native version */
  41         case DLL_PROCESS_ATTACH:
  42             DisableThreadLibraryCalls( hinst );
  43             break;
  44     }
  45     return TRUE;
  46 }
  47
  48 void WINAPI DhcpCApiCleanup(void)
  49 {
  50     FIXME(": stub\n");
  51 }
  52
  53 DWORD WINAPI DhcpCApiInitialize(LPDWORD version)
  54 {
  55     *version = 2; /* 98, XP, and 8 */
  56     FIXME(": stub\n");
  57     return ERROR_SUCCESS;
  58 }
  59
  60 DWORD WINAPI DhcpRequestParams( DWORD flags, void *reserved, WCHAR *adapter, DHCPCAPI_CLASSID *class_id,
  61                                 DHCPCAPI_PARAMS_ARRAY send_params, DHCPCAPI_PARAMS_ARRAY recv_params, BYTE *buf,
  62                                 DWORD *buflen, WCHAR *request_id )
  63 {
  64     struct mountmgr_dhcp_request_params *query;
  65     DWORD i, size, err = ERROR_OUTOFMEMORY;
  66     BYTE *src, *dst;
  67     HANDLE mgr;
  68
  69     TRACE( "(%08x, %p, %s, %p, %u, %u, %p, %p, %s)\n", flags, reserved, debugstr_w(adapter), class_id,
  70            send_params.nParams, recv_params.nParams, buf, buflen, debugstr_w(request_id) );
  71
  72     if (!adapter || lstrlenW(adapter) > IF_MAX_STRING_SIZE || !buflen) return ERROR_INVALID_PARAMETER;
  73     if (flags != DHCPCAPI_REQUEST_SYNCHRONOUS) FIXME( "unsupported flags %08x\n", flags );
  74
  75     for (i = 0; i < send_params.nParams; i++)
  76         FIXME( "send option %u not supported\n", send_params.Params->OptionId );
  77
  78     mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
  79                        OPEN_EXISTING, 0, 0 );
  80     if (mgr == INVALID_HANDLE_VALUE) return GetLastError();
  81
  82     size = FIELD_OFFSET(struct mountmgr_dhcp_request_params, params[recv_params.nParams]) + *buflen;
  83     if (!(query = heap_alloc_zero( size ))) goto done;
  84
  85     for (i = 0; i < recv_params.nParams; i++) query->params[i].id = recv_params.Params[i].OptionId;
  86     query->count = recv_params.nParams;
  87     lstrcpyW( query->adapter, adapter );
  88
  89     if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_DHCP_REQUEST_PARAMS, query, size, query, size, NULL, NULL ))
  90     {
  91         err = GetLastError();
  92         if (err == ERROR_MORE_DATA) *buflen = query->size - (size - *buflen);
  93         goto done;
  94     }
  95
  96     dst = buf;
  97     for (i = 0; i < query->count; i++)
  98     {
  99         if (buf)
 100         {
 101             recv_params.Params[i].OptionId = query->params[i].id;
 102             recv_params.Params[i].IsVendor = FALSE; /* FIXME */
 103             if (query->params[i].size)
 104             {
 105                 src = (BYTE *)query + query->params[i].offset;
 106                 memcpy( dst, src, query->params[i].size );
 107
 108                 recv_params.Params[i].Data = dst;
 109                 recv_params.Params[i].nBytesData = query->params[i].size;
 110             }
 111             else
 112             {
 113                 recv_params.Params[i].Data = NULL;
 114                 recv_params.Params[i].nBytesData = 0;
 115             }
 116         }
 117         dst += query->params[i].size;
 118     }
 119
 120     *buflen = dst - buf;
 121     err = ERROR_SUCCESS;
 122
 123 done:
 124     heap_free( query );
 125     CloseHandle( mgr );
 126     return err;
 127 }