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Library proxy

Functions for proxy testing.

Author:
Joao Correa <joao@livewire.com.br>

Copyright© Same as Nmap--See http://nmap.org/book/man-legal.html

Source: http://nmap.org/svn/nselib/proxy.lua

Functions

connectProxy (host, port, proxyType, hostname)

Creates a socket, performs proxy handshake if necessary and returns it

hex_resolve (hostname)

Function that resolves IP address for hostname and returns it as hex values

redirectCheck (resp1, resp2)

Checks if two different responses are equal, if true, the proxy server might be redirecting the requests to a default page

return_args ()

Checks if any parameter was used in old or new syntax and return the parameters

socksHandshake (socket, version, hostname)

Performs a socks handshake on a socket and returns it

test_connect (host, port, proxyType, hostname)

Builds the CONNECT request and calls test

test_get (host, port, proxyType, test_url, hostname, pattern)

Builds the GET request and calls test

test_head (host, port, proxyType, test_url, hostname, pattern)

Builds the HEAD request and calls test



Functions

connectProxy (host, port, proxyType, hostname)

Creates a socket, performs proxy handshake if necessary and returns it

Parameters

  • host: The host table
  • port: The port table
  • proxyType: A string with the proxy type. Might be "http","socks4" or "socks5"
  • hostname: The proxy destination hostname

Return values:

  1. status True if handshake succeeded, false otherwise
  2. socket A socket with the handshake already done, or an error if
hex_resolve (hostname)

Function that resolves IP address for hostname and returns it as hex values

Parameters

  • hostname: Hostname to resolve

Return value:

Ip address of hostname in hex
redirectCheck (resp1, resp2)

Checks if two different responses are equal, if true, the proxy server might be redirecting the requests to a default page

Functions splits body from head before comparing, to avoid session variables, cookies...

Parameters

  • resp1: A string with the response for the first request
  • resp2: A string with the response for the second request

Return value:

bool true if both responses are equal, otherwise false
return_args ()

Checks if any parameter was used in old or new syntax and return the parameters

Return values:

  1. url the proxy.url parameter
  2. pattern the proxy.pattern parameter
socksHandshake (socket, version, hostname)

Performs a socks handshake on a socket and returns it

Parameters

  • socket: The socket where the handshake will be performed
  • version: The socks version (might be 4 or 5)
  • hostname: The proxy destination hostname

Return values:

  1. status True if handshake succeeded, false otherwise
  2. socket A socket with the handshake already done, or an error if status is false
test_connect (host, port, proxyType, hostname)

Builds the CONNECT request and calls test

Parameters

  • host: The host table
  • port: The port table
  • proxyType: The proxy type to be tested, might be 'socks4', 'socks5' or 'http'
  • hostname: The hostname of the server to send the request

Return value:

the result of the function test (status and the request result)
test_get (host, port, proxyType, test_url, hostname, pattern)

Builds the GET request and calls test

Parameters

  • host: The host table
  • port: The port table
  • proxyType: The proxy type to be tested, might be 'socks4', 'socks5' or 'http'
  • test_url: The url to send the request
  • hostname: The hostname of the server to send the request
  • pattern: The pattern to check for valid result

Return value:

the result of the function test (status and the request result)
test_head (host, port, proxyType, test_url, hostname, pattern)

Builds the HEAD request and calls test

Parameters

  • host: The host table
  • port: The port table
  • proxyType: The proxy type to be tested, might be 'socks4', 'socks5' or 'http'
  • test_url: The url te send the request
  • hostname: The hostname of the server to send the request
  • pattern: The pattern to check for valid result

Return value:

the result of the function test (status and the request result)

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