<?php
// iprenum.php - Windows network settings renumbering
// ver 0.0.4
// Jody K Delauney
// jodydelauney@elder-n00b.org
// 2009/02/17
//
// Copyright (c) 2009, Jody K Delauney
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Take partial IP address, full subnet mask, default gateway, and optionally DNS and WINS servers
// and change the computers network settings accordingly. If DHCP is used for IP and DNS or WINS
// is not specified, then DHCP is assumed for the unspecified arguments.
//
// This version assumes that only the last octet of the client IP will stay the same. Future versions
// will allow 1 through 3 octets to be entered and the difference will be computed on the fly. No
// attempt will ever be made to assume subnet masks or gateways.
//
// If static DNS or WINS servers are already present, and those entries are not provided, the script
// will assume that the network range for those servers is also changing and update them accordingly.
// Future versions may offer switches to over ride this behavior.
//
// This script also assumes only one active adaptor, no plans to support multi adaptor clients at
// this time. If you want to target a specific adaptor, change the reference to the $adaptor_name.
//
// No sanity checking is done against values, netsh should just fail if insane values are used.
//
// New in version 0.0.1
// - It exists. What more do you want?
//
// New in version 0.0.2
// - The DHCP argument can be accepted in mixed case.
//
// New In version 0.0.3
// - Both DNS and WINS can be given the NONE argument to disable that option.
// - If DNS or WINS are not specified, DHCP is not specified as the first option, and either were NONE,
// they'll stay that way
// - If DHCP is given as first option, DNS and WINS can follow directly without need to pad out netmask
// and gateway options.
//
// New in version 0.0.4
// - Some sanity checking is done on DNS and WINS arguments.
// - DNS and WINS settings starting as NONE staying as NONE actually works now.
// Define a few things before we get going.
$adaptor_name = "Local Area Connection"; // Change this to affect a different adaptor, might be an option later.
$dns_serv = "NO";
$new_dns = "NO";
$dns_arg = 4;
$wins_serv = "NO";
$new_wins = "NO";
$wins_arg = 5;
// Displays usage information.
function usage($appname)
{
echo "\nUsage - $appname <Partial IP> <Subnet Mask> <Default Gateway> [DNS] [WINS]";
echo "\n $appname DHCP [DNS] [WINS]";
echo "\n";
echo "\nDNS and WINS can be specified by their IP address, DHCP, or NONE";
echo "\nIf IP is set by DHCP and DNS or WINS is not specified, then DHCP is assumed.\n\n";
}
// Make sure we got enough arguments, but not too many.
// This will be replaced with proper parsing later.
if ($argc == 1) // Did you forget what to do?
{
usage($argv[0]);
die();
}
elseif ($argc < 5 && strtolower($argv[1])=="dhcp") // If first argument is dhcp we don't need anything else.
{
$dns_arg = 2;
$wins_arg = 3;
}
elseif ($argc < 4) // Not enough arguments to complete the renumber without assuming too much.
{
echo "\nNot enough arguments.\n\n";
usage($argv[0]);
die();
}
elseif ($argc > 6) // Too many arguments.
{
echo "\nToo many arguments.\n\n";
usage($argv[0]);
die();
}
echo "\nReading current network configuration.\n";
system("netsh int ip show conf name=\"$adaptor_name\"> ip_config.txt"); // Get current config
$ip_config = file('ip_config.txt'); // Read data into array for processing
foreach ($ip_config as $line_to_process) // Start finding out what we have
{
$config_line = trim(strrev(strstr(strrev($line_to_process),":"))); // What is the values name?
$config_param = trim(substr(trim($line_to_process),strlen($config_line))); // What is the value?
switch ($config_line)
{
case "DHCP enabled:": // See if DHCP is currently in use
$dhcp_status = $config_param;
echo "DHCP enabled: " . $dhcp_status . "\n";
break;
case "IP Address:": // Acquire current IP
echo "Current IP: " . $config_param . "\n";
$ip_address = substr($config_param,strlen(strstr(strrev($config_param),"."))); // Strip IP down to last octet
break;
case "Statically Configured DNS Servers:": // Get static DNS if assigned
$dns_serv = substr($config_param,strlen(strstr(strrev($config_param),"."))); // Strip IP down to last octet
echo "Statically Configured DNS Server: " . $config_param . "\n";
break;
case "Statically Configured WINS Servers:": // Get static WINS if assigned
$wins_serv = substr($config_param,strlen(strstr(strrev($config_param),"."))); // Strip IP down to last octet
echo "Statically Configured WINS Server: " . $config_param . "\n";
break;
default: // All other lines are ignored, so no need to case them.
echo "";
}
}
echo "Configuration processing done.\nParsing command line arguments\n";
if (strtolower($dhcp_status) == "no" && strtolower($argv[1]) != "dhcp") // Work out what new IP should be.
{
$new_ip = "static " .$argv[1] . "." . "$ip_address";
}
elseif (strtolower($dhcp_status) == "yes" && strtolower($argv[1]) == "dhcp") // DHCP is already set for IP settings, nothing to do.
{
$new_ip = "skip";
}
else // Only thing left should be that we're setting to DHCP, so just do it.
{
$new_ip = "dhcp";
}
if ($new_ip != "dhcp" && $new_ip != "skip") // Prepare for new subnet
{
$new_subnet = $argv[2];
}
else
{
$new_subnet = "";
}
if ($new_ip != "dhcp" && $new_ip != "skip") // Prepare for new gateway
{
$new_gateway = "$argv[3] 0";
}
else
{
$new_gateway = "";
}
if ($new_ip == "skip")
{
echo "IP already configured for DHCP.\n";
$new_ip = "dhcp";
}
else
{
echo "Configuring IP Settings: ";
system("netsh int ip set address \"$adaptor_name\" $new_ip $new_subnet $new_gateway");
}
// Work out DNS settings
if ($argc > $dns_arg && strtolower($argv[$dns_arg]) == "dhcp") // DNS argument given, and it's DHCP.
{
$new_dns = "dhcp";
}
elseif ($argc > $dns_arg && strtolower($argv[$dns_arg]) == "none" && strtolower($argv[1])=="dhcp") // DNS argument given, and it's NONE, and IP is DHCP.
{
$new_dns = "NO";
}
elseif ($argc > $dns_arg && strtolower($argv[$dns_arg]) == "none") // DNS argument given, and it's NONE.
{
$new_dns = "static none";
}
elseif ($argc > $dns_arg && strtolower($argv[$dns_arg]) != "dhcp") // DNS argument given, and it's not DHCP.
{
$new_dns = "static " . $argv[$dns_arg];
}
elseif (strtolower($argv[1]) == "dhcp") // IP set DHCP and no DNS given.
{
$new_dns = "dhcp";
}
elseif ($dns_serv == "None") // DNS not currently static.
{
$new_dns = "static none";
}
else // Change static DNS server to new network.
{
$new_dns = "static " . $argv[1].".".$dns_serv;
}
if ($new_dns != "NO") // DNS needs to be updated, so lets do it.
{
echo "Configuring DNS Settings: ";
system("netsh int ip set dns \"$adaptor_name\" $new_dns");
}
// Work out WINS settings
if ($argc > $wins_arg && strtolower($argv[$wins_arg]) == "dhcp") // WINS argument given, and it's DHCP.
{
$new_wins = "dhcp";
}
elseif ($argc > $wins_arg && strtolower($argv[$wins_arg]) == "none" && strtolower($argv[1]) == "dhcp") // WINS argument given, and it's NONE, and IP is DHCP.
{
$new_wins = "NO";
}
elseif ($argc > $wins_arg && strtolower($argv[$wins_arg]) == "none") // WINS argument given, and it's NONE.
{
$new_wins = "static none";
}
elseif ($argc > $wins_arg && strtolower($argv[$wins_arg]) != "dhcp") // WINS argument given, and it's not DHCP.
{
$new_wins = "static " . $argv[$wins_arg];
}
elseif (strtolower($argv[1]) == "dhcp") // IP set DHCP and no WINS given.
{
$new_wins = "dhcp";
}
elseif ($wins_serv == "None") // WINS not currently static.
{
$new_wins = "static none";
}
else // Change static WINS server to new network.
{
$new_wins = "static " . $argv[1].".".$wins_serv;
}
if ($new_wins != "NO") // WINS needs to be updated, so lets do it.
{
echo "Configuring WINS Settings: ";
system("netsh int ip set wins \"$adaptor_name\" $new_wins");
}
echo "IP Address: " . $new_ip . "\n";
if ($new_subnet != "")
{
echo "Subnet: " . $new_subnet . "\n";
}
if ($new_gateway != "")
{
echo "Gateway: " . $new_gateway . "\n";
}
if ($new_dns != "NO")
{
echo "DNS: " . $new_dns . "\n";
}
if ($new_wins != "NO")
{
echo "WINS: " . $new_wins . "\n";
}
echo "\n";
?>