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<html><head><title>Searching an LDAP Directory with Net::LDAP (Perl in a Nutshell, 2nd Edition)</title><link rel="stylesheet" type="text/css" href="../style/style1.css" /><meta name="DC.Creator" content="Stephen Spainhour" /><meta name="DC.Format" content="text/xml" scheme="MIME" /><meta name="DC.Language" content="en-US" /><meta name="DC.Publisher" content="O'Reilly & Associates, Inc." /><meta name="DC.Source" scheme="ISBN" content="0596002416L" /><meta name="DC.Subject.Keyword" content="stuff" /><meta name="DC.Title" content="Perl in a Nutshell, 2nd Edition" /><meta name="DC.Type" content="Text.Monograph" /></head><body bgcolor="#ffffff"><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home" /><map name="banner-map"><area shape="rect" coords="1,-2,616,66" href="index.htm" alt="Java and XSLT" /><area shape="rect" coords="629,-11,726,25" href="jobjects/fsearch.htm" alt="Search this book" /></map><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch19_01.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228" /><td align="right" valign="top" width="228"><a href="ch19_03.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">19.2. Searching an LDAP Directory with Net::LDAP</h2><p><a name="INDEX-2354" /> <a name="INDEX-2355" /><a name="INDEX-2356" />One of the most common actionsyou'll perform against LDAP is searching. Ifyou're using LDAP as a repository for your mailaliases, you'll search the directory each time mailis sent to a given address. If you're using LDAP asa repository for user accounts, you'll search thedirectory every time a user logs into your system, or when a userperforms a task on the system that requires information that residesonly in LDAP.</p><p>Under LDAP, searching consists of three parts:</p><ol><li><p>Binding to a directory server by name (or by other credentials, suchas Kerberos tokens) and port. You can provide a login and passwordfor the authentication or bind anonymously if you have permissions tosearch or write a part of the directory.</p></li><li><p>Passing your search request to the directory server.</p></li><li><p>Unbinding from the directory server, thus closing the connection.</p></li></ol><p>Let's say that you want to find a user called<tt class="literal">nvp</tt> in the directory serverthat's living on<em class="emphasis">ldap.your.server</em>. With Net::LDAP, do thefollowing:</p><blockquote><pre class="code">use Net::LDAP;my $lsvr = 'ldap.your.domain';my $ldap = Net::LDAP->new($lsvr) or die "error connecting to $lsvr: $@";$ldap->bind; # Bind anonymously, that is, no login and passmy $results = $ldap->search ( # Perform a search for 'nvp' filter => "(&(uid=nvp) (o=your.domain))" );if($results->code) { die "received LDAP error: @{[$results->error]};}foreach my $entry ($results->all_entries) { $entry->dump;}$ldap->unbind; # Unbind and close connection</pre></blockquote><hr width="684" align="left" /><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch19_01.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0" /></a></td><td align="right" valign="top" width="228"><a href="ch19_03.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">19. Lightweight Directory Access with Net::LDAP</td><td align="center" valign="top" width="228"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0" /></a></td><td align="right" valign="top" width="228">19.3. Adding an Entry to the Directory with Net::LDAP</td></tr></table></div><hr width="684" align="left" /><img src="../gifs/navbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links" /><p><p><font size="-1"><a href="copyrght.htm">Copyright © 2002</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"><area shape="rect" coords="1,0,85,94" href="../index.htm"><area shape="rect" coords="86,1,178,103" href="../lwp/index.htm"><area shape="rect" coords="180,0,265,103" href="../lperl/index.htm"><area shape="rect" coords="267,0,353,105" href="../perlnut/index.htm"><area shape="rect" coords="354,1,446,115" href="../prog/index.htm"><area shape="rect" coords="448,0,526,132" href="../tk/index.htm"><area shape="rect" coords="528,1,615,119" href="../cookbook/index.htm"><area shape="rect" coords="617,0,690,135" href="../pxml/index.htm"></map></body></html>⌨️ 快捷键说明
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