349 lines
10 KiB
Text
349 lines
10 KiB
Text
<?php
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/*
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Whois2.php PHP classes to conduct whois queries
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Copyright (C)1999,2000 easyDNS Technologies Inc. & Mark Jeftovic
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Maintained by Mark Jeftovic <markjr@easydns.com>
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For the most recent version of this package:
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http://www.easydns.com/~markjr/whois2/
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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class Whois {
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// Full code and data version string (e.g. 'Whois2.php v3.01:16')
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var $VERSION;
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// This release of the package
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var $CODE_VERSION = "3.0.4";
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// Network Solutions registry server
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var $NSI_REGISTRY = "whois.nsiregistry.net";
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// Network Solutions registrar server (?)
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var $NSI_REGISTRAR = "whois.networksolutions.com";
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// Default WHOIS port
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var $PORT = 43;
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// Maximum number of retries on connection failure
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var $RETRY = 0;
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// Time to wait between retries
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var $SLEEP = 2;
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// Read buffer size (0 == char by char)
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var $BUFFER = 0;
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// Status response codes
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var $STAT = array(
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-1 => "error",
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0 => "ready",
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1 => "ok"
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);
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// Array to contain all query variables
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var $Query = array(
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"tld" => "",
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"type" => "domain",
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"string" => "",
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"status",
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"server"
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);
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// Various hacks. In a perfect world we don't need these.
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var $HACKS = array(
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// force "dom" keywork
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"nsi_force_dom" => 1,
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// set if nsiregistry gives wrong whois server for netsol
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"nsi_referral_loop" => 0,
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// ???
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"wrong_netsol_whois" => "rs.internic.net",
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// ???
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"real_netsol_whois" => "whois.networksolutions.com",
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// force english output on .jp for us ethnocentric types, unset or comment out for Japanese output
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"force_slash_e" => "whois.nic.ad.jp",
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// whois.nic.cx hangs forever
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"cx_is_broken" => 1
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);
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// List of servers and handlers (loaded from servers.whois)
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var $DATA = array();
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/*
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* Constructor function
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*/
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function Whois ($query = "") {
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// Load DATA array
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@require("servers.whois");
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// Set version
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$this->VERSION = sprintf("Whois2.php v%s:%s", $this->CODE_VERSION, $this->DATA_VERSION);
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// If domain to query was not set
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if(!isSet($query)) {
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// Configure to use default whois server
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$this->Query["server"] = $this->NSI_REGISTRY;
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return;
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}
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// Set domain to query in query array
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$this->Query["string"] = $domain = strtolower($query);
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// Test if we know in advance that no whois server is
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// available for this domain and that we can get the
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// data via http request
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reset($this->HTTPW);
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while (list($key, $val)=each($this->HTTPW))
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if (substr($query,-strlen($key)-1)==".$key")
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{
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$this->Query["server"] = str_replace("#",$query,$val);
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$this->Query["tld"] = $key;
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// If a handler exists for the tld
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if(isSet($this->DATA[$key])) {
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// Set file/handler in query array
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$handler = $this->DATA[$key];
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$this->Query["file"] = sprintf("%s.whois",$handler);
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$this->Query["handler"] = $handler;
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}
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return;
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}
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// Determine the top level domain, and it's whois server using
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// DNS lookups on 'whois-servers.net'.
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// Assumes a valid DNS response indicates a recognised tld (!?)
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$tld = "";
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$server = "";
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$dp = explode(".", $domain);
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$np = count($dp) -1;
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$tldtests = array();
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for ($i=0; $i<$np; $i++)
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{
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array_shift($dp);
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$tldtests[] = implode(".",$dp);
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}
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foreach($tldtests as $tld) {
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$cname = checkdnsrr($tld.".whois-servers.net", "CNAME");
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if(!$cname) continue;
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$server = gethostbyname($tld.".whois-servers.net");
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break;
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}
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if($tld && $server) {
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// If found, set tld and whois server in query array
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$this->Query["server"] = $server;
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$this->Query["tld"] = $tld;
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// If a handler exists for the tld
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if(isSet($this->DATA[$tld])) {
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// Set file/handler in query array
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$handler = $this->DATA[$tld];
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$this->Query["file"] = sprintf("%s.whois", $handler);
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$this->Query["handler"] = $handler;
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}
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return;
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}
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// If top level domain not known, check availability in DNS
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if(checkdnsrr($query, "A")) {
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// Prepare to do lookup via the 'ipw' handler
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$ip = gethostbyname($query);
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$this->Query["server"] = "whois.arin.net";
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$this->Query["host_ip"] = $ip;
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$this->Query["file"] = "ipw.whois";
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$this->Query["handler"] = "ipw";
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$this->Query["string"] = $ip;
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$this->Query["tld"] = "ipw";
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// If query was an IP, determine the hostname
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if ($query==$ip)
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$this->Query["host_name"] = gethostbyaddr($ip);
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else
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$this->Query["host_name"] = $query;
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return;
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}
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// If tld not known, and domain not in DNS, return error
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unset($this->Query["server"]);
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$this->Query["status"] = -1;
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$this->Query["errstr"][] = $this->Query["string"]." domain is not supported";
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return;
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}
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/*
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* Open a socket to the whois server.
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*
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* Returns a socket connection pointer on success, or -1 on failure.
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*/
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function Connect () {
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// Fail if server not set
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if(!isSet($this->Query["server"]))
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return(-1);
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// Enter connection attempt loop
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$server = $this->Query["server"];
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$retry = 0;
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while($retry <= $this->RETRY) {
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// Set query status
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$this->Query["status"] = "ready";
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// Connect to whois port
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$ptr = fsockopen($server, $this->PORT);
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if($ptr > 0) {
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$this->Query["status"]="ok";
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return($ptr);
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}
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// Failed this attempt
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$this->Query["status"] = "error";
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$retry++;
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// Sleep before retrying
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sleep($this->SLEEP);
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}
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// If we get this far, it hasn't worked
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return(-1);
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}
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/*
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* Post-process result with handler class. On success, returns the result
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* from the handler. On failure, returns passed in result unaltered.
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*/
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function Process (&$result) {
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// Disable error reporting temporarily (probably not necessary)
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//$old_val = error_reporting(FALSE);
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// If the handler has not already been included somehow, include it now
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$HANDLER_FLAG = sprintf("__%s_HANDLER__", strtoupper($this->Query["handler"]));
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if(!defined($HANDLER_FLAG))
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@include($this->Query["file"]);
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// Restore error reporting
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//error_reporting($old_val);
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// If the handler has still not been included, append to query errors list and return
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if(!defined($HANDLER_FLAG)) {
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$this->Query["errstr"][] = "Can't find ".$this->Query["tld"]." handler: ".$this->Query["file"];
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return($result);
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}
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// Pass result to handler
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$object = $this->Query["handler"];
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$handler = new $object($result, $this->Query);
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// If handler returned an error, append it to the query errors list
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if(isSet($handler->Query["errstr"]))
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$this->Query["errstr"][] = $handler->Query["errstr"];
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// Return the result
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return($handler->result);
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}
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/*
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* Perform lookup. Returns an array. The 'rawdata' element contains an
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* array of lines gathered from the whois query. If a top level domain
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* handler class was found for the domain, other elements will have been
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* populated too.
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*/
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function Lookup ($query = "") {
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// If domain to query passed in, use it, otherwise use domain from initialisation
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$string = !empty($query) ? $query : $this->Query["string"];
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// Check if protocol is http
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if (substr($this->Query["server"],0,7)=="http://")
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{
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$lines = file($this->Query["server"]);
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$output = str_replace("\n"," ",implode(" ",$lines));
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$output = str_replace("<BR>","\n",$output);
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$output = str_replace("<P>", "\n",$output);
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$output = str_replace("<TR>","\n",$output);
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$output = explode("\n",strip_tags($output));
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$result['rawdata'] = $output;
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// If we have a handler, post-process it with that
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if(isSet($this->DATA[$this->Query["tld"]]))
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$result = $this->Process($result);
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return($result);
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}
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// If the '.cx' whois server is broken, return an error now (saves attempting and timing out)
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if($this->HACKS["cx_is_broken"] && $this->Query["tld"] == "cx") {
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$this->Query["errstr"][] = ".cx doesn't work. Turn off HACKS[\"cx_is_broken\"] if ".$this->Query["server"]." finally got fixed.";
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return("");
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}
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// Connect to whois server, or return if failed
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$ptr = $this->Connect();
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if($ptr < 0) {
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$this->Query["status"] = -1;
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$this->Query["errstr"][] = "Connect failed to: ".$this->Query["server"];
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return(array());
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}
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// Determining on server/hacks in operation, send appropriate request
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if(($this->Query["server"] == $this->NSI_REGISTRY || $this->Query["server"] == $this->NSI_REGISTRAR) && $this->HACKS["nsi_force_dom"]) {
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fputs($ptr, sprintf("dom %s\r\n", trim($string)));
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}
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elseif($this->Query["server"] == $this->HACKS["force_slash_e"]) {
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fputs($ptr, sprintf("%s/e\r\n", trim($string)));
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}
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else {
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fputs($ptr, sprintf("%s\r\n", trim($string)));
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}
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// Prepare to receive result
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$raw = "";
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$output = array();
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while(!feof($ptr)) {
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// If a buffer size is set, fetch line-by-line into an array
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if($this->BUFFER)
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$output[] = fgets($ptr, $this->BUFFER);
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// If not, fetch char-by-char into a string
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else
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$raw .= fgetc($ptr);
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}
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// If captured char-by-char, convert to an array of lines
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if(!$this->BUFFER)
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$output = explode("\n", $raw);
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// Drop empty last line
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unset($output[count($output)-1]);
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// Create result and set 'rawdata'
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$result = array();
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$result['rawdata'] = $output;
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// If we have a handler, post-process it with that
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if(isSet($this->DATA[$this->Query["tld"]]))
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$result = $this->Process($result);
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return($result);
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}
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}
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?>
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