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 "winnls.h"
  24 #include "dhcpcsdk.h"
  25 #include "winioctl.h"
  26 #include "winternl.h"
  27 #include "ws2def.h"
  28 #include "ws2ipdef.h"
  29 #include "iphlpapi.h"
  30 #include "netioapi.h"
  31 #define WINE_MOUNTMGR_EXTENSIONS
  32 #include "ddk/mountmgr.h"
  33
  34 #include "wine/debug.h"
  35 #include "wine/heap.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(dhcpcsvc);
  38
  39 void WINAPI DhcpCApiCleanup(void)
  40 {
  41     FIXME(": stub\n");
  42 }
  43
  44 DWORD WINAPI DhcpCApiInitialize(LPDWORD version)
  45 {
  46     *version = 2; /* 98, XP, and 8 */
  47     FIXME(": stub\n");
  48     return ERROR_SUCCESS;
  49 }
  50
  51 static DWORD get_adapter_luid( const WCHAR *adapter, NET_LUID *luid )
  52 {
  53     UNICODE_STRING ustr;
  54     NTSTATUS status;
  55     GUID guid;
  56
  57     if (adapter[0] == '{')
  58     {
  59         RtlInitUnicodeString( &ustr, adapter );
  60         status = RtlGUIDFromString( &ustr, &guid );
  61         if (!status) return ConvertInterfaceGuidToLuid( &guid, luid );
  62     }
  63     return ConvertInterfaceNameToLuidW( adapter, luid );
  64 }
  65
  66 #define IF_NAMESIZE 16
  67 static DWORD get_adapter_name( const WCHAR *adapter, char *unix_name, DWORD len )
  68 {
  69     WCHAR unix_nameW[IF_NAMESIZE];
  70     NET_LUID luid;
  71     DWORD ret;
  72
  73     if ((ret = get_adapter_luid( adapter, &luid ))) return ret;
  74     if ((ret = ConvertInterfaceLuidToAlias( &luid, unix_nameW, ARRAY_SIZE(unix_nameW) ))) return ret;
  75     if (!WideCharToMultiByte( CP_UNIXCP, 0, unix_nameW, -1, unix_name, len, NULL, NULL ))
  76         return ERROR_INVALID_PARAMETER;
  77     return ERROR_SUCCESS;
  78 }
  79
  80 DWORD WINAPI DhcpRequestParams( DWORD flags, void *reserved, WCHAR *adapter, DHCPCAPI_CLASSID *class_id,
  81                                 DHCPCAPI_PARAMS_ARRAY send_params, DHCPCAPI_PARAMS_ARRAY recv_params, BYTE *buf,
  82                                 DWORD *buflen, WCHAR *request_id )
  83 {
  84     struct mountmgr_dhcp_request_params *query;
  85     DWORD i, size, err;
  86     BYTE *src, *dst;
  87     HANDLE mgr;
  88     char unix_name[IF_NAMESIZE];
  89
  90     TRACE( "(%08lx, %p, %s, %p, %lu, %lu, %p, %p, %s)\n", flags, reserved, debugstr_w(adapter), class_id,
  91            send_params.nParams, recv_params.nParams, buf, buflen, debugstr_w(request_id) );
  92
  93     if (!adapter || !buflen) return ERROR_INVALID_PARAMETER;
  94     if (flags != DHCPCAPI_REQUEST_SYNCHRONOUS) FIXME( "unsupported flags %08lx\n", flags );
  95     if ((err = get_adapter_name( adapter, unix_name, sizeof(unix_name) ))) return err;
  96
  97     for (i = 0; i < send_params.nParams; i++)
  98         FIXME( "send option %lu not supported\n", send_params.Params->OptionId );
  99
 100     mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 101                        OPEN_EXISTING, 0, 0 );
 102     if (mgr == INVALID_HANDLE_VALUE) return GetLastError();
 103
 104     size = FIELD_OFFSET(struct mountmgr_dhcp_request_params, params[recv_params.nParams]) + *buflen;
 105     if (!(query = heap_alloc_zero( size )))
 106     {
 107         err = ERROR_OUTOFMEMORY;
 108         goto done;
 109     }
 110     for (i = 0; i < recv_params.nParams; i++) query->params[i].id = recv_params.Params[i].OptionId;
 111     query->count = recv_params.nParams;
 112     strcpy( query->unix_name, unix_name );
 113
 114     if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_DHCP_REQUEST_PARAMS, query, size, query, size, NULL, NULL ))
 115     {
 116         err = GetLastError();
 117         if (err == ERROR_MORE_DATA) *buflen = query->size - (size - *buflen);
 118         goto done;
 119     }
 120
 121     dst = buf;
 122     for (i = 0; i < query->count; i++)
 123     {
 124         if (buf)
 125         {
 126             recv_params.Params[i].OptionId = query->params[i].id;
 127             recv_params.Params[i].IsVendor = FALSE; /* FIXME */
 128             if (query->params[i].size)
 129             {
 130                 src = (BYTE *)query + query->params[i].offset;
 131                 memcpy( dst, src, query->params[i].size );
 132
 133                 recv_params.Params[i].Data = dst;
 134                 recv_params.Params[i].nBytesData = query->params[i].size;
 135             }
 136             else
 137             {
 138                 recv_params.Params[i].Data = NULL;
 139                 recv_params.Params[i].nBytesData = 0;
 140             }
 141         }
 142         dst += query->params[i].size;
 143     }
 144
 145     *buflen = dst - buf;
 146     err = ERROR_SUCCESS;
 147
 148 done:
 149     heap_free( query );
 150     CloseHandle( mgr );
 151     return err;
 152 }