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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /><title>pldns</title>
<meta name="generator" content="amaya 8.5, see http://www.w3.org/Amaya/" />
<link rel="stylesheet" type="text/css" href="plt-doc.css" /></head><body>
<h2>pldns Module</h2>
<p>ldns is a C library developed by NLnetLabs, It provides a
complete set of functions for handling dns records, as well as DNS
resolvers, etc.<br />
This Module provides methods from ldns that can be used to analyse DNS records;<br />
it is <span style="font-style: italic;">not</span> a complete python extension of all the ldns functionality.<br />
</p>
<h3>Module Methods</h3>These allow you acess to the ldns routines that map a (small integer) DNS object into a descriptive string.<br />
<br />
<table class="indent1">
<tbody>
<tr><td class="name methodwidth"><strong>opcodestr()</strong></td>
<td class="name descriptionwidth"><em>pldns.opcodestr(integer) -> aString<br />
</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a string describing a DNS operation code value<br /></td>
</tr>
<tr>
<td class="name methodwidth"><strong>rcodestr()</strong><br />
</td>
<td class="name descriptionwidth"><em>pldns.rcodestr(integer) -> aString</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a string describing a DNS result code value</td>
</tr>
<tr>
<td class="name"><strong>typestr</strong>()<br />
</td>
<td class="name"><em><em>pldns.typestr(integer)
-> aString<br />
</em></em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a string describing a DNS Resource Record type <span style="font-style: italic;"><span style="font-style: italic;"><span style="font-style: italic;" /></span></span></td>
</tr>
<tr>
<td class="name methodwidth"><strong>errorstr</strong>()<br />
</td>
<td class="name descriptionwidth"><em>r</em><em>ldns_obj.</em><em>errorstr(ldns_obj.status) -> anInteger<br />
</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a string describing an ldns status code.
</td>
</tr>
</tbody></table>
<br />
<h3>Class LdnsRR<br />
</h3>Ldns functions (see below) return tuples of LdnsRR objects.
Each such object contains all the information from a single Resource
Record in a DNS datagram.<br />
<br /><table class="indent1"><tbody><tr><td class="heading" colspan="2">Instance Attributes</td>
</tr>
<tr>
<td class="name methodwidth"><strong>owner</strong><br />
</td>
<td class="name descriptionwidth"><em>rr.owner -> aString<br />
</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns the RR owner's FQDN (fully qualified domain name)<br />
<span style="font-family: monospace;" /></td>
</tr>
<tr>
<td class="name methodwidth"><strong>type</strong><br />
</td>
<td class="name descriptionwidth"><em>rr.type -> anInteger</em><br />
</td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns the RR's type as a small integer<br />
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>ttl</strong><br />
</td>
<td class="name descriptionwidth"><em>rr.ttl -> anInteger<br />
</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns the RR's TTL (Time To Live) in seconds<br />
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>rdata<br />
</strong></td>
<td class="name descriptionwidth"><em>rr.rdata-> aString<br />
</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a string with all the information about
the RR. Since different RR types have different data items, the
string is similar to those returned by dig for RRs.<br />
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>str</strong><br />
</td>
<td class="name descriptionwidth"><em>ipf.proto -> aString</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a string containing all the information about the RR, in a format similar to that returned by dig for an RR.<br />
</td>
</tr>
</tbody></table>
<br />
<h3>Class Ldns<br />
</h3>An Ldns object contains all the information from a DNS datagram.<br />
<br /><table class="indent1"><tbody>
<tr><td class="heading" colspan="2">Class functions</td>
</tr>
<tr>
<td class="name methodwidth"><strong>ldns()</strong><br />
</td>
<td class="name descriptionwidth"><em>pldns.ldns(udp.payload) -> anLdns_obj<br />
</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">This function creates an ldns object. It's argument is a DNS datagram from plt, either udp.payload or tcp.payload.<br />
<span style="font-family: monospace;" /></td>
</tr>
<tr>
<td class="name methodwidth"><strong>is_ok</strong>()<br />
</td>
<td class="name descriptionwidth"><em>rldns_obj.status-> True or False</em><br />
</td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns True if the ldns object was created without problems.<br />
</td>
</tr>
<tr><td class="heading" colspan="2">Instance Attributes</td>
</tr>
<tr>
<td class="name methodwidth"><strong>status</strong><br />
</td>
<td class="name descriptionwidth"><em>rldns_obj.status-> anInteger</em><br />
</td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns zero if the ldns object was created without problems, <br />or an ldns status code otherwise.<br />
</td>
</tr>
<tr>
</tr><tr>
</tr><tr>
<td style="font-weight: bold;" class="name methodwidth"><strong>ident</strong></td>
<td class="name descriptionwidth"><em>ldns_obj.ident</em><em>-> anInteger<br />
</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns the datagram's ident value (16-bit unsigned integer).<br />
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>is_response</strong><br />
</td>
<td class="name descriptionwidth"><em><em>ldns_obj.</em><em>is_response -> True or False<br />
</em></em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns True if the datagram is a response.<br />
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>opcode</strong><br />
</td>
<td class="name descriptionwidth"><em>ldns_obj.</em><em>opcode -> anInteger</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns the datagram's opcode field.<br />
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>rcode</strong><br />
</td>
<td class="name descriptionwidth"><em>i</em><em>ldns_obj.rcode</em><em> -> aString</em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns the datagram's rcode field.<br />
</td>
</tr>
<tr>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>query_rr_list</strong><br />
</td>
<td class="name descriptionwidth"><em><em>ldns_obj.</em><em>query_rr_list -> a list of LdnsRRs<br />
</em></em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a a list of LdnsRR objects from the datagram's <br />Query section.
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>response_rr_list</strong><br />
</td>
<td class="name descriptionwidth"><em>ldns_obj.</em><em>response_r_list -> </em><em><em>a list of LdnsRRs</em></em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a a list of LdnsRR objects from the datagram's <br />Response section.
</td>
</tr>
<tr>
</tr><tr>
<td class="name methodwidth"><strong>auth_rr_list</strong>
</td>
<td class="name descriptionwidth"><em>ldns_obj.auth_rr_list </em><em>-> </em><em><em>a list of LdnsRRs</em></em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a a list of LdnsRR objects from the datagram's <br />Authority section.
</td>
</tr>
<tr>
<td class="name methodwidth"><strong>addit_rr_list</strong>
</td>
<td class="name descriptionwidth"><em>ldns_obj.</em><em>-> </em><em><em>a list of LdnsRRs</em></em></td>
</tr>
<tr>
<td><br />
</td>
<td class="description">Returns a a list of LdnsRR objects from the datagram's <br />Additional section.</td>
</tr>
</tbody></table>
<br />
<p /><p>Nevil Brownlee<br />
Tue, 19 Aug 14 (NZST)</p>
</body></html>
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