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 #include "winternl.h"
  26 #include "ws2def.h"
  27 #include "ws2ipdef.h"
  28 #include "iphlpapi.h"
  29 #include "netioapi.h"
  30 #define WINE_MOUNTMGR_EXTENSIONS
  31 #include "ddk/mountmgr.h"
  32
  33 #include "wine/debug.h"
  34 #include "wine/heap.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(dhcpcsvc);
  37
  38 void WINAPI DhcpCApiCleanup(void)
  39 {
  40     FIXME(": stub\n");
  41 }
  42
  43 DWORD WINAPI DhcpCApiInitialize(LPDWORD version)
  44 {
  45     *version = 2; /* 98, XP, and 8 */
  46     FIXME(": stub\n");
  47     return ERROR_SUCCESS;
  48 }
  49
  50 static DWORD get_adapter_luid( const WCHAR *adapter, NET_LUID *luid )
  51 {
  52     UNICODE_STRING ustr;
  53     NTSTATUS status;
  54     GUID guid;
  55
  56     if (adapter[0] == '{')
  57     {
  58         RtlInitUnicodeString( &ustr, adapter );
  59         status = RtlGUIDFromString( &ustr, &guid );
  60         if (!status) return ConvertInterfaceGuidToLuid( &guid, luid );
  61     }
  62     return ConvertInterfaceNameToLuidW( adapter, luid );
  63 }
  64
  65 DWORD WINAPI DhcpRequestParams( DWORD flags, void *reserved, WCHAR *adapter, DHCPCAPI_CLASSID *class_id,
  66                                 DHCPCAPI_PARAMS_ARRAY send_params, DHCPCAPI_PARAMS_ARRAY recv_params, BYTE *buf,
  67                                 DWORD *buflen, WCHAR *request_id )
  68 {
  69     struct mountmgr_dhcp_request_params *query;
  70     DWORD i, size, err;
  71     BYTE *src, *dst;
  72     NET_LUID luid;
  73     HANDLE mgr;
  74
  75     TRACE( "(%08x, %p, %s, %p, %u, %u, %p, %p, %s)\n", flags, reserved, debugstr_w(adapter), class_id,
  76            send_params.nParams, recv_params.nParams, buf, buflen, debugstr_w(request_id) );
  77
  78     if (!adapter || !buflen) return ERROR_INVALID_PARAMETER;
  79     if (flags != DHCPCAPI_REQUEST_SYNCHRONOUS) FIXME( "unsupported flags %08x\n", flags );
  80     if ((err = get_adapter_luid( adapter, &luid ))) return err;
  81
  82     for (i = 0; i < send_params.nParams; i++)
  83         FIXME( "send option %u not supported\n", send_params.Params->OptionId );
  84
  85     mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
  86                        OPEN_EXISTING, 0, 0 );
  87     if (mgr == INVALID_HANDLE_VALUE) return GetLastError();
  88
  89     size = FIELD_OFFSET(struct mountmgr_dhcp_request_params, params[recv_params.nParams]) + *buflen;
  90     if (!(query = heap_alloc_zero( size )))
  91     {
  92         err = ERROR_OUTOFMEMORY;
  93         goto done;
  94     }
  95     for (i = 0; i < recv_params.nParams; i++) query->params[i].id = recv_params.Params[i].OptionId;
  96     query->count = recv_params.nParams;
  97     query->adapter = luid;
  98
  99     if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_DHCP_REQUEST_PARAMS, query, size, query, size, NULL, NULL ))
 100     {
 101         err = GetLastError();
 102         if (err == ERROR_MORE_DATA) *buflen = query->size - (size - *buflen);
 103         goto done;
 104     }
 105
 106     dst = buf;
 107     for (i = 0; i < query->count; i++)
 108     {
 109         if (buf)
 110         {
 111             recv_params.Params[i].OptionId = query->params[i].id;
 112             recv_params.Params[i].IsVendor = FALSE; /* FIXME */
 113             if (query->params[i].size)
 114             {
 115                 src = (BYTE *)query + query->params[i].offset;
 116                 memcpy( dst, src, query->params[i].size );
 117
 118                 recv_params.Params[i].Data = dst;
 119                 recv_params.Params[i].nBytesData = query->params[i].size;
 120             }
 121             else
 122             {
 123                 recv_params.Params[i].Data = NULL;
 124                 recv_params.Params[i].nBytesData = 0;
 125             }
 126         }
 127         dst += query->params[i].size;
 128     }
 129
 130     *buflen = dst - buf;
 131     err = ERROR_SUCCESS;
 132
 133 done:
 134     heap_free( query );
 135     CloseHandle( mgr );
 136     return err;
 137 }