272 lines
8.3 KiB
HTML
272 lines
8.3 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>ldap_search_ext --Asynchronously Search the Directory Using
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Controls</title>
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<!-- Begin Header Records ========================================== -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Change History: -->
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<!-- YYMMDD USERID Change description -->
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<!-- Direct1 SCRIPT J converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
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<!-- at RCHVMW2 on 17 Feb 1999 at 11:05:09 -->
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<!-- File Edited April 2001 -->
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<!-- This file has undergone html cleanup on 2/19/02 by JET -->
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<!--End Header Records -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<!-- Java sync-link -->
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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>ldap_search_ext --Asynchronously Search the Directory Using Controls</h2>
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<br>
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<div class="box" style="width: 80%;">
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<br>
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Syntax<br>
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<pre>
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#include <ldap.h>
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int ldap_search_ext(
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LDAP *<em>ld</em>,
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const char *<em>base</em>,
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int <em>scope</em>,
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const char *<em>filter</em>,
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char **<em>attrs</em>,
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int <em>attrsonly</em>,
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LDAPControl **<em>serverctrls</em>,
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LDAPControl **<em>clientctrls</em>,
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struct timeval *<em>timeout</em>,
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int <em>sizelimit</em>,
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int *<em>msgidp)
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</em>
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</pre>
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Library Name/Service Program: QSYS/QGLDCLNT<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>ldap_search_ext()</strong> routine initiates an asynchronous
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search operation.</p>
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<br>
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<h3>Authorities and Locks</h3>
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<p>No i5/OS authority is required. All authority checking is done by the LDAP
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server.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><em>ld</em></dt>
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<dd>(Input) Specifies the LDAP pointer returned by a previous call to <a href=
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"ldap_init.htm">ldap_init()</a>, <a href="ldap_ssl_init.htm">
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ldap_ssl_init()</a>, or <a href="ldap_open.htm">ldap_open()</a>.</dd>
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<dt><em>base</em></dt>
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<dd>(Input) Specifies the DN of the entry at which to start the search.</dd>
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<dt><em>scope</em></dt>
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<dd>(Input) Specifies the scope of the search. It can be <strong>
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LDAP_SCOPE_BASE</strong> (to search the <em>base</em> object itself), or
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<strong>LDAP_SCOPE_ONELEVEL</strong> (to search the <em>base</em> object's
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immediate children), or <strong>LDAP_SCOPE_SUBTREE</strong> (to search the <em>
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base</em> object and all its descendents).</dd>
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<dt><em>filter</em></dt>
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<dd>(Input) Specifies a string representation of the filter to apply in the
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search. Simple filters can be specified as attributetype=attributevalue. More
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complex filters are specified using a prefix notation according to the
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following BNF:
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<pre>
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<filter> ::= '(' <filtercomp> ')'
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<filtercomp> ::= <and> | <or> | <not> | <simple>
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<and> ::= '&' <filterlist>
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<or> ::= '|' <filterlist>
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<not> ::= '!' <filter>
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<filterlist> ::= <filter> | <filter> <filterlist>
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<simple> ::= <attributetype> <filtertype> <attributevalue>
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<filtertype> ::= '=' | '~=' | '<=' | '>='
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</pre>
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<br>
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<p>The '~=' construct is used to specify approximate matching. The
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representation for <attributetype> and <attributevalue> are as
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described in RFC 2252, "Lightweight Directory Access Protocol (v3): Attribute
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Syntax Definitions." In addition, <attributevalue> can be a single * to
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achieve an attribute existence test, or can contain text and *'s interspersed
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to achieve substring matching.</p>
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<p> For example, the filter "(mail=*)" will find any entries that have a mail
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attribute. The filter "(mail=*@student.of.life.edu)" will find any entries that
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have a mail attribute ending in the specified string.</p>
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<p> More complex filters are created using the & and | operators. For
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example, the filter "(&(objectclass=person)(mail=*))" will find any entries
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that have an objectclass of person and a mail attribute. To put parentheses or
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asterisks in a filter, escape them with a backslash '\' character. See RFC
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2254, "A String Representation of LDAP Search Filters," for a more complete
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description of allowable filters.</p>
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</dd>
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<dt><em>attrs</em></dt>
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<dd>(Input) Specifies a null-terminated array of character string attribute
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types to return from entries that match <em>filter</em>. If NULL is specified,
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all attributes will be returned.</dd>
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<dt><em>attrsonly</em></dt>
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<dd>(Input) Specifies attribute information. <em>Attrsonly</em> should be set
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to 1 to request attribute types only. Set to 0 to request both attributes types
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and attribute values.<br>
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</dd>
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<dt><em>serverctrls</em></dt>
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<dd>(Input) Specifies a list of LDAP server controls. This parameter may be set
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to null. See <a href="ldap_controls.htm">LDAP Controls</a> for more information
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about server controls.<br>
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</dd>
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<dt><em>clientctrls</em></dt>
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<dd>(Input) Specifies a list of LDAP client controls. This parameter may be set
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to null. See <a href="ldap_controls.htm">LDAP Controls</a> for more information
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about client controls.<br>
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</dd>
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<dt><em>sizelimit</em></dt>
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<dd>(Input) Specifies the maximum number of entries to return. Note that the
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server may set a lower limit which is enforced at the server.<br>
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</dd>
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<dt><em>timeout</em></dt>
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<dd>(Input) The local search timeout value and the operation time limit that is
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sent to the server within the search request.<br>
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</dd>
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<dt><em>msgidp</em></dt>
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<dd>(Output) This result parameter is set to the message id of the request if
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the ldap_search_ext() call succeeds.</dd>
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</dl>
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<br>
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<h3>Return Value</h3>
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<dl>
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<dt><strong>Message ID of the Operation Initiated</strong></dt>
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<dd>if the request was successful. A subsequent call to <a href=
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"ldap_result.htm">ldap_result()</a> can be used to obtain the result.<br>
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<br>
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</dd>
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<dt><strong>another LDAP error code</strong></dt>
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<dd>if the request was not successful.</dd>
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</dl>
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<br>
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<h3>Error Conditions</h3>
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<p>If <strong>ldap_search_ext()</strong> is not successful, an error code will
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be returned. See <a href="ldap_error_condt.htm">LDAP Client API Error
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Conditions</a> for possible LDAP error codes.</p>
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<br>
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<h3>Error Messages</h3>
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<p>The following message may be sent from this function.</p>
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<table width="100%" cellpadding="3">
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<tr>
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<th align="left" valign="top">Message ID</th>
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<th align="left" valign="top">Error Message Text</th>
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</tr>
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<tr>
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<td width="15%" valign="top">CPF3CF2 E</td>
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<td width="85%" valign="top">Error(s) occurred during running of
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ldap_search_ext API.</td>
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</tr>
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</table>
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<br>
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<br>
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<h3>Related Information</h3>
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<ul>
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<li><a href="ldap_result.htm">ldap_result()</a> -- Retrieve result of an
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asynchronous LDAP operation.</li>
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<li><a href="ldap_search_s.htm">ldap_search_s()</a> -- Synchronously search the
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directory.</li>
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<li><a href="ldap_search.htm">ldap_search()</a> -- Asynchronously search the
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directory.</li>
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<li><a href="ldap_search_ext_s.htm">ldap_search_ext_s()</a> -- Synchronously
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search the directory with controls.</li>
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<li><a href="ldap_search_st.htm">ldap_search_st()</a> -- Synchronously search
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the directory with timeout.</li>
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</ul>
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<p>The <strong>ldap_search_ext()</strong> API supports LDAP V3 server controls,
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client controls, and allow varying size and time limits to be easily specified
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for each search operation.</p>
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<br>
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<hr>
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API introduced: V4R5
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<hr>
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<table align="center" cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"dirserv1.htm">LDAP APIs</a> | <a href="aplist.htm">APIs by
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category</a></td>
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</tr>
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</table>
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</body>
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</html>
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