ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/ldap_search_s.htm

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<title>ldap_search_s()--Perform an LDAP Search Operation (Synchronous)</title>
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<h2>ldap_search_s()--Perform an LDAP Search Operation (Synchronous)</h2>
<div class="box" style="width: 80%;">
<br>
&nbsp;&nbsp;Syntax<br>
<pre>
#include &lt;ldap.h&gt;
int ldap_search_s(
LDAP *<em>ld</em>,
const char *<em>base</em>,
int <em>scope</em>,
const char *<em>filter</em>,
char **<em>attrs</em>,
int <em>attrsonly</em>,
LDAPMessage **<em>res</em>)
</pre>
<br>
&nbsp;&nbsp;Default Public Authority: *USE<br>
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<br>
&nbsp;&nbsp;Library Name/Service Program: QSYS/QGLDCLNT<br>
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<br>
&nbsp;&nbsp;Threadsafe: Yes<br>
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<br>
</div>
<p>The <strong>ldap_search_s()</strong> function is used to perform a
synchronous LDAP search operation.<br>
</p>
<h3>Authorities and Locks</h3>
<p>No i5/OS authority is required. All authority checking is done by the LDAP
server.</p>
<br>
<h3>Parameters</h3>
<dl>
<dt><em>ld</em></dt>
<dd>(Input) Specifies the LDAP pointer returned by a previous call to <a href=
"ldap_init.htm">ldap_init()</a>, <a href="ldap_ssl_init.htm">
ldap_ssl_init()</a>, or <a href="ldap_open.htm">ldap_open()</a>.</dd>
<dt><em>base</em></dt>
<dd>(Input) Specifies the DN of the entry at which to start the search.</dd>
<dt><em>scope</em></dt>
<dd>(Input) Specifies the scope of the search. It can be <strong>
LDAP_SCOPE_BASE</strong> (to search the object itself), or <strong>
LDAP_SCOPE_ONELEVEL</strong> (to search the object's immediate children), or
<strong>LDAP_SCOPE_SUBTREE</strong> (to search the object and all its
descendents).</dd>
<dt><em>filter</em></dt>
<dd>(Input) Specifies a string representation of the filter to apply in the
search. Simple filters can be specified as attributetype=attributevalue. More
complex filters are specified using a prefix notation according to the
following BNF:
<pre>
&lt;filter&gt; ::= '(' &lt;filtercomp&gt; ')'
&lt;filtercomp&gt; ::= &lt;and&gt; | &lt;or&gt; | &lt;not&gt; | &lt;simple&gt;
&lt;and&gt; ::= '&amp;' &lt;filterlist&gt;
&lt;or&gt; ::= '|' &lt;filterlist&gt;
&lt;not&gt; ::= '!' &lt;filter&gt;
&lt;filterlist&gt; ::= &lt;filter&gt; | &lt;filter&gt; &lt;filterlist&gt;
&lt;simple&gt; ::= &lt;attributetype&gt; &lt;filtertype&gt; &lt;attributevalue&gt;
&lt;filtertype&gt; ::= '=' | '~=' | '&lt;=' | '&gt;='
</pre>
<br>
<p>The '~=' construct is used to specify approximate matching. The
representation for &lt;attributetype&gt; and &lt;attributevalue&gt; are as
described in RFC 2252, "Lightweight Directory Access Protocol (v3): Attribute
Syntax Definitions." In addition, &lt;attributevalue&gt; can be a single * to
achieve an attribute existence test, or can contain text and *'s interspersed
to achieve substring matching.</p>
<p> For example, the filter "(mail=*)" will find any entries that have a mail
attribute. The filter "(mail=*@student.of.life.edu)" will find any entries that
have a mail attribute ending in the specified string.</p>
<p> More complex filters are created using the &amp; and | operators. For
example, the filter "(&amp;(objectclass=person)(mail=*))" will find any entries
that have an objectclass of person and a mail attribute. To put parentheses or
asterisks in a filter, escape them with a backslash '\' character. See RFC
2254, "A String Representation of LDAP Search Filters," for a more complete
description of allowable filters.</p>
</dd>
<dt><em>attrs</em></dt>
<dd>(Input) Specifies a null-terminated array of character string attribute
types to return from entries that match <em>filter</em>. If NULL is specified,
all attributes will be returned.</dd>
<dt><em>attrsonly</em></dt>
<dd>(Input) Specifies attribute information. <em>Attrsonly</em> should be set
to 1 to request attribute types only. Set to 0 to request both attributes types
and attribute values.<br>
</dd>
<dt><em>res</em></dt>
<dd>(Output) Contains the result of the synchronous search operation. This
result should be passed to the LDAP parsing routines (see <a href=
"ldap_first_entry.htm">ldap_first_entry()</a>, <a href="ldap_next_entry.htm">
ldap_next_entry()</a>, and so on). The caller is responsible for freeing <em>
res</em> with <a href="ldap_msgfree.htm">ldap_msgfree()</a>.</dd>
</dl>
<br>
<h3>Return Value</h3>
<dl>
<dt><strong>LDAP_SUCCESS</strong></dt>
<dd>if the request was successful.<br>
<br>
</dd>
<dt><strong>another LDAP error</strong></dt>
<dd>if the request was not successful. The code can be interpreted by <a href=
"ldap_perror.htm">ldap_perror()</a> or <a href="ldap_err2string.htm">
ldap_err2string()</a>.</dd>
</dl>
<br>
<h3>Error Conditions</h3>
<p>If <strong>ldap_search_s()</strong> is not successful, an error code will be
returned. See <a href="ldap_error_condt.htm">LDAP Client API Error
Conditions</a> for possible LDAP error codes values.</p>
<br>
<h3>Error Messages</h3>
<p>The following message may be sent from this function.</p>
<table width="100%" cellpadding="3">
<tr>
<th align="left" valign="top">Message ID</th>
<th align="left" valign="top">Error Message Text</th>
</tr>
<tr>
<td width="15%" valign="top">CPF3CF2 E</td>
<td width="85%" valign="top">Error(s) occurred during running of ldap_search_s
API.</td>
</tr>
</table>
<br>
<br>
<h3>Related Information</h3>
<ul>
<li><a href="ldap_first_entry.htm">ldap_first_entry()</a> -- Retrieve first
LDAP entry.</li>
<li><a href="ldap_first_ref.htm">ldap_first_reference()</a> -- Return first
continuation reference in a chain of search results.</li>
<li><a href="ldap_count_entry.htm">ldap_count_entries()</a> -- Return number of
entries in a chain of search results.</li>
<li><a href="ldap_msgfree.htm">ldap_msgfree()</a> -- Free LDAP result
message.</li>
<li><a href="ldap_search.htm">ldap_search()</a> -- Asynchronously search the
directory.</li>
<li><a href="ldap_search_ext_s.htm">ldap_search_ext_s()</a> -- Synchronously
search the directory with controls.</li>
<li><a href="ldap_search_ext.htm">ldap_search_ext()</a> -- Asynchronously
search the directory with controls.</li>
<li><a href="ldap_search_st.htm">ldap_search_st()</a> -- Synchronously search
the directory with timeout.</li>
</ul>
<hr>
API introduced: V4R3
<hr>
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