<div class="content"><p> </p><p>The <b>R_DhcpGetClientInfoV4</b> method retrieves the DHCPv4
client <span><a href="a9d6a415-4de6-4058-befe-ca2e42764485#gt_e6d76b31-2852-4bd5-8fbb-8e82a3cedb29" data-linktype="relative-path">lease record</a></span>
information from the <span><a href="a9d6a415-4de6-4058-befe-ca2e42764485#gt_005ffc96-bb67-44ca-938f-dd7ec3c95cab" data-linktype="relative-path">DHCPv4 server database</a></span>.
The caller of this function can free the memory pointed to by the <i>ClientInfo</i>
parameter, by calling the function <b>midl_user_free</b> (section <span><a href="a7e5f2d1-04b7-4363-bdc0-76a1099664eb" data-linktype="relative-path">3</a></span>).</p><dl>
<dd>
<div><pre> DWORD R_DhcpGetClientInfoV4(
   [in, unique, string] DHCP_SRV_HANDLE ServerIpAddress,
   [in, ref] LPDHCP_SEARCH_INFO SearchInfo,
   [out] LPDHCP_CLIENT_INFO_V4* ClientInfo
 );
</pre></div>
</dd></dl><p><b>ServerIpAddress: </b>The IP address/host name of
the DHCP server. This parameter is unused.</p><p><b>SearchInfo: </b>This is a pointer of type <span><a href="f8ab6a93-be31-4643-b32c-e0ae6ba95a44" data-linktype="relative-path">DHCP_SEARCH_INFO (section 2.2.1.2.18)</a></span>
structure that defines the key to be used to search the DHCPv4 client lease
record on the DHCPv4 server. In case the <i>SearchType</i> member is
DhcpClientName and there are multiple lease records with the same <i>ClientName</i>,
the server will return client information for the client having the lowest
numerical IP address.</p><p><b>ClientInfo: </b>This is a pointer of type <span><a href="0605fa26-c2ab-4f06-a15b-36d81a3b0690" data-linktype="relative-path">LPDHCP_CLIENT_INFO_V4</a></span>
that points to the location to which a specific DHCPv4 client lease record is
retrieved. The caller is responsible for freeing this memory. The <b>ClientHardwareAddress</b>
member represents a <span><a href="a9d6a415-4de6-4058-befe-ca2e42764485#gt_4c35997a-5d90-4d7e-96c8-346f4ad0a63f" data-linktype="relative-path">DHCPv4 client unique ID</a></span>
(section <span><a href="651865ec-6404-4191-ad30-113578a94556" data-linktype="relative-path">2.2.1.2.5.2</a></span>).</p><p><b>Return Values: </b>A 32-bit unsigned integer value
that indicates return status. A return value ERROR_SUCCESS (0x00000000)
indicates that the operation was completed successfully, else it contains a
Win32 error code, as specified in <span><a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a></span>.
This error code value can correspond to a DHCP-specific failure, which takes a
value between 20000 and 20099, or any generic failure.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>0x00000000</p>
  <p>ERROR_SUCCESS</p>
  </td>
  <td>
  <p>The call was successful.</p>
  </td>
 </tr><tr>
  <td>
  <p>0x00004E2D</p>
  <p>ERROR_DHCP_JET_ERROR</p>
  </td>
  <td>
  <p>An error occurred while accessing the DHCP server database
  or the client entry is not present in the database.</p>
  </td>
 </tr></tbody></table>
</dd></dl><p>The opnum field value for this method is 34.</p><p>When processing this call, the DHCP server MUST do the
following:</p><ul><li><p><span><span> 
</span></span>Validate if this method is authorized for read access per section
<span><a href="baec2112-1146-4c42-b77e-b706e170a590" data-linktype="relative-path">3.5.4</a></span>.
If not, return the error ERROR_ACCESS_DENIED.</p>
</li><li><p><span><span> 
</span></span>Iterate through the <b>DHCPv4ClientsList</b> ADM element of all
the <b>DHCPv4Scope</b> ADM element entries in the server ADM element <b>DHCPv4ScopesList</b>,
and retrieve the first <b>DHCPv4Client</b> ADM element entry corresponding to
the <b>ClientIPAddress</b>, <b>ClientHardwareAddress</b>, or <b>ClientName</b>
member as specified by the <i>SearchType</i> member in the <i>SearchInfo</i>
parameter (section 2.2.1.2.18). If the <b>DHCPv4Client</b> ADM element entry is
not found, return ERROR_DHCP_JET_ERROR.</p>
</li><li><p><span><span> 
</span></span>Copy the information in the <b>DHCPv4Client</b> ADM element entry
into the out parameter <i>ClientInfo</i> (section 2.2.1.2.14). The <b>HostName</b>
member in <span><a href="51e16f4a-cb1d-400a-85c7-defe4cba1609" data-linktype="relative-path">DHCP_HOST_INFO (section 2.2.1.2.7)</a></span>
is unused. Return ERROR_SUCCESS.</p>
</li></ul><p><b>Exceptions Thrown:</b> No exceptions SHOULD be thrown
beyond those thrown by the underlying RPC protocol specified in <span><a href="../ms-rpce/290c38b1-92fe-4229-91e6-4fc376610c15" data-linktype="relative-path">[MS-RPCE]</a></span>.</p></div>