Dana Hudes > HTTP-CheckProxy > HTTP::CheckProxy

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Module Version: 0.4   Source  

NAME ^

HTTP::CheckProxy - Perl module for testing for open proxies

SYNOPSIS ^

  use HTTP::CheckProxy

DESCRIPTION ^

This module uses LWP to test the supplied IP address to see if it will promiscuosly proxy on port 80. Caution: this can have false alarms if you are on a network where you are supposed to go through a proxy, such as AOL -- but are you supposed to be running a webserver on such a network ?

If you feed this an invalid ip address, LWP will complain.

Note: while there is HTTP::ProxyCheck it is much slower, though it does a lot of input validation. HTTP::CheckProxy is intended to be useful in processing lots of candidate proxies and in recording useful information. To do this, make one object and repeatedly invoke the test() method with different IP addresses.

USAGE ^

  my $open_proxy_test = HTTP::CheckProxy->new($ip);
  print "proxy test for $ip returns ".$open_proxy_test->code."\n";
  print ($open_proxy_test->guilty? "guilty" : "innocent");
  $open_proxy_test->test($ip2);
  print "proxy test for $ip2 returns ".$open_proxy_test->code."\n";
  print ($open_proxy_test->guilty? "guilty" : "innocent");

BUGS ^

SUPPORT ^

Email bugs to the author.

AUTHOR ^

        Dana Hudes
        CPAN ID: DHUDES
        dhudes@hudes.org
        http://www.hudes.org

COPYRIGHT ^

This program is free software licensed under the...

        The General Public License (GPL)
        Version 2, June 1991

The full text of the license can be found in the LICENSE file included with this module.

SEE ALSO ^

perl(1).

METHODS ^

new

 Usage     : HTTP::CheckProxy->new($ip);
 Purpose   : constructor
 Returns   : object instance
 Argument  : Optional first paramenter:
                name or ip address of candidate proxy. Do not include http:// .
             Optional second parameter: url (including the http://) to try to fetch. If this is invalid or unreachable the results of the test are meaningless, but this is NOT checked.
 Throws    : We should probably throw an exception if the ip address under test is unreachable
 Comments  : 

See Also : HTTPD::ADS::AbuseNotify for sending complaints about validated proxies and other abuse.

get_proxy_port

 Usage     :  $open_proxy_test->get_proxy_port;
 Purpose   : tell which port successfully proxied 
 Returns   : 16-bit integer port number
 Argument  : none
 Throws    : nothing
 Comments  : only valid when  $open_proxy_test->guilty is TRUE , may be undef otherwise (or have incorrect info if you reused the object)! 
See Also   : HTTPD::ADS::AbuseNotify for sending complaints about validated proxies and other abuse.

test

 Usage     :  $open_proxy_test->test($ip)
 Purpose   : tries to fetch a known web page via the supplied ip as proxy.
 Returns   : true (proxy fetch successful) or false (it failed to fetch)
 Argument  : IPv4
 Throws    : We should probably throw an exception if the ip address under test is unreachable
 Comments  : Not all open proxies or compromised hosts listen on port 80 and their are other means              than straightforward HTTP to communicate with zombies but this is a start.

See Also : HTTPD::ADS::AbuseNotify for sending complaints about validated proxies and other abuse.

guilty

 Usage     : $open_proxy_test->guilty
 Purpose   : Is in fact the tested host guilty of being an open proxy?
 Returns   : true (its an open proxy) or false (it isn't)
 Argument  : none
 Throws    : nothing
 Comments  : This method checks the return status code of the test. If an error code is returned, esp. code 500, the host is not guilty. If the status code is success, the host is guilty.

 See Also   : HTTPD::ADS::AbuseNotify for sending complaints about validated proxies and other abuse.

code

 Usage     : $open_proxy_test->code
 Purpose   : Return the status code of the proxy test
 Returns   : HTTP status code
 Argument  : none
 Throws    : nothing
 Comments  : 

 See Also   : HTTPD::ADS::AbuseNotify for sending complaints about validated proxies and other abuse.
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