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<?php
/*
* Check of an IP address is a valid IPv4 address
*/
function iqblockcountry_is_valid_ipv4($ipv4)
{
if(filter_var($ipv4, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) === FALSE) {
return false;
}
return true;
}
/*
* Check of an IP address is a valid IPv6 address
*/
function iqblockcountry_is_valid_ipv6($ipv6)
{
if(filter_var($ipv6, FILTER_VALIDATE_IP,FILTER_FLAG_IPV6) === FALSE) {
return false;
}
return true;
}
function iqblockcountry_is_valid_ipv4_cidr($ip)
{
if (preg_match('/^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/([0-9]|[1-2][0-9]|3[0-2]))$/',$ip))
{
return true;
}
else
{
return false;
}
}
function iqblockcountry_is_valid_ipv6_cidr($ip)
{
if (preg_match('/^s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:)))(%.+)?s*(\/([0-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8]))?$/',$ip))
{
return true;
}
else
{
return false;
}
}
/*
* Check of given url is a valid url
*/
function iqblockcountry_is_valid_url($input)
{
if(filter_var($input,FILTER_VALIDATE_URL) === FALSE) {
return "";
}
else
{
return $input;
}
}
/*
* Sanitize callback. Check if supplied IP address list is valid IPv4 or IPv6
*/
function iqblockcountry_validate_ip($input)
{
$validips = "";
if (preg_match('/;/',$input))
{
$arr = explode(";", $input);
foreach ($arr as $value) {
if (iqblockcountry_is_valid_ipv4($value) || iqblockcountry_is_valid_ipv6($value) || iqblockcountry_is_valid_ipv4_cidr($value) || iqblockcountry_is_valid_ipv6_cidr($value))
{
$validips .= $value . ";";
}
}
}
else
{
if (iqblockcountry_is_valid_ipv4($input) || iqblockcountry_is_valid_ipv6($input) || iqblockcountry_is_valid_ipv4_cidr($input) || iqblockcountry_is_valid_ipv6_cidr($input))
{
$validips = $input . ";";
}
}
return $validips;
}
/*
* Check if GeoIP API key is correct.
*/
function iqblockcountry_check_geoapikey($input)
{
// Check first if API key is empty....
if (!empty($input))
{
$url = GEOIPAPICHECKURL;
$result = wp_remote_post(
$url,
array(
'body' => array(
'api-key' => $input
)
)
);
$message = "";
$type = "updated";
if ( is_wp_error( $result ) ) {
return FALSE;
}
elseif ( 200 == $result['response']['code'] ) {
$body = $result['body'];
$xml = new SimpleXmlElement($body);
if ($xml->check != "Ok")
{
$message = __( 'The GeoIP API key is incorrect. Please update the key.', 'iq-block-country' );
$type = "error";
$input = FALSE;
}
else
{
$message = __( 'Setting saved.', 'iq-block-country' );
$type = "updated";
}
}
else
{
$input = FALSE;
}
add_settings_error('iqblockcountry_geoipapi_error',esc_attr( 'settings_updated' ),$message,$type);
return $input;
}
return "";
}
/*
* Check if GeoIP API key is correct.
*/
function iqblockcountry_check_adminapikey($input)
{
// Check first if API key is empty....
if (!empty($input))
{
$url = ADMINAPICHECKURL;
$result = wp_remote_post(
$url,
array(
'body' => array(
'api-key' => $input
)
)
);
$message = "";
$type = "updated";
if ( is_wp_error( $result ) ) {
return FALSE;
}
elseif ( 200 == $result['response']['code'] ) {
$body = $result['body'];
$xml = new SimpleXmlElement($body);
if ($xml->check != "Ok")
{
$message = __( 'The Admin Block API key is incorrect. Please update the key.', 'iq-block-country' );
$type = "error";
$input = FALSE;
}
else
{
$message = __( 'Setting saved.', 'iq-block-country' );
$type = "updated";
}
}
else
{
$input = FALSE;
}
add_settings_error('iqblockcountry_adminapi_error',esc_attr( 'settings_updated' ),$message,$type);
return $input;
}
return "";
}
/*
* Check if GeoIP API key is correct.
*/
function iqblockcountry_get_licensedate_geoapikey($apikey)
{
// Check first if API key is empty....
if (!empty($apikey))
{
$url = GEOIPAPICHECKURL;
$result = wp_remote_post(
$url,
array(
'body' => array(
'api-key' => $apikey
)
)
);
if ( is_wp_error( $result ) ) {
return "";
}
elseif ( 200 == $result['response']['code'] ) {
$body = $result['body'];
$xml = new SimpleXmlElement($body);
if ($xml->check == "Ok")
{
return $xml->LicenseDate;
}
}
else
{
return "";
}
}
return "";
}
/*
* Check usage of GeoIP API
*/
function iqblockcountry_get_usage_geoapikey($apikey)
{
// Check first if API key is empty....
if (!empty($apikey))
{
$url = GEOIPAPICHECKUSAGEURL;
$result = wp_remote_post(
$url,
array(
'body' => array(
'api-key' => $apikey
)
)
);
if ( is_wp_error( $result ) ) {
return "";
}
elseif ( 200 == $result['response']['code'] ) {
$body = $result['body'];
$xml = new SimpleXmlElement($body);
if ($xml->check == "Ok")
{
return $xml->requests;
}
}
else
{
return "";
}
}
return "";
}
/**
* Check if a given ip is in a network
* @param string $ip IP to check in IPV4 format eg. 127.0.0.1
* @param string $range IP/CIDR netmask eg. 127.0.0.0/24, also 127.0.0.1 is accepted and /32 assumed
* @return boolean true if the ip is in this range / false if not.
*/
function iqblockcountry_ip_in_ipv4_range( $ip, $range ) {
if ( strpos( $range, '/' ) == false ) {
$range .= '/32';
}
// $range is in IP/CIDR format eg 127.0.0.1/24
list( $range, $netmask ) = explode( '/', $range, 2 );
$range_decimal = ip2long( $range );
$ip_decimal = ip2long( $ip );
$wildcard_decimal = pow( 2, ( 32 - $netmask ) ) - 1;
$netmask_decimal = ~ $wildcard_decimal;
return ( ( $ip_decimal & $netmask_decimal ) == ( $range_decimal & $netmask_decimal ) );
}
function iqblockcountry_ip2long6($ip) {
if (substr_count($ip, '::')) {
$ip = str_replace('::', str_repeat(':0000', 8 - substr_count($ip, ':')) . ':', $ip);
}
$ip = explode(':', $ip);
$r_ip = '';
foreach ($ip as $v) {
$r_ip .= str_pad(base_convert($v, 16, 2), 16, 0, STR_PAD_LEFT);
}
return base_convert($r_ip, 2, 10);
}
// Get the ipv6 full format and return it as a decimal value.
function iqblockcountry_get_ipv6_full($ip)
{
$pieces = explode ("/", $ip, 2);
$left_piece = $pieces[0];
$right_piece = $pieces[1];
// Extract out the main IP pieces
$ip_pieces = explode("::", $left_piece, 2);
$main_ip_piece = $ip_pieces[0];
$last_ip_piece = $ip_pieces[1];
// Pad out the shorthand entries.
$main_ip_pieces = explode(":", $main_ip_piece);
foreach($main_ip_pieces as $key=>$val) {
$main_ip_pieces[$key] = str_pad($main_ip_pieces[$key], 4, "0", STR_PAD_LEFT);
}
// Check to see if the last IP block (part after ::) is set
$last_piece = "";
$size = count($main_ip_pieces);
if (trim($last_ip_piece) != "") {
$last_piece = str_pad($last_ip_piece, 4, "0", STR_PAD_LEFT);
// Build the full form of the IPV6 address considering the last IP block set
for ($i = $size; $i < 7; $i++) {
$main_ip_pieces[$i] = "0000";
}
$main_ip_pieces[7] = $last_piece;
}
else {
// Build the full form of the IPV6 address
for ($i = $size; $i < 8; $i++) {
$main_ip_pieces[$i] = "0000";
}
}
// Rebuild the final long form IPV6 address
$final_ip = implode(":", $main_ip_pieces);
return iqblockcountry_ip2long6($final_ip);
}
// Determine whether the IPV6 address is within range.
// $ip is the IPV6 address in decimal format to check if its within the IP range created by the cloudflare IPV6 address, $range_ip.
// $ip and $range_ip are converted to full IPV6 format.
// Returns true if the IPV6 address, $ip, is within the range from $range_ip. False otherwise.
function iqblockcountry_ipv6_in_range($ip, $range_ip)
{
$pieces = explode ("/", $range_ip, 2);
$left_piece = $pieces[0];
$right_piece = $pieces[1];
// Extract out the main IP pieces
$ip_pieces = explode("::", $left_piece, 2);
$main_ip_piece = $ip_pieces[0];
$last_ip_piece = $ip_pieces[1];
// Pad out the shorthand entries.
$main_ip_pieces = explode(":", $main_ip_piece);
foreach($main_ip_pieces as $key=>$val) {
$main_ip_pieces[$key] = str_pad($main_ip_pieces[$key], 4, "0", STR_PAD_LEFT);
}
// Create the first and last pieces that will denote the IPV6 range.
$first = $main_ip_pieces;
$last = $main_ip_pieces;
// Check to see if the last IP block (part after ::) is set
$last_piece = "";
$size = count($main_ip_pieces);
if (trim($last_ip_piece) != "") {
$last_piece = str_pad($last_ip_piece, 4, "0", STR_PAD_LEFT);
// Build the full form of the IPV6 address considering the last IP block set
for ($i = $size; $i < 7; $i++) {
$first[$i] = "0000";
$last[$i] = "ffff";
}
$main_ip_pieces[7] = $last_piece;
}
else {
// Build the full form of the IPV6 address
for ($i = $size; $i < 8; $i++) {
$first[$i] = "0000";
$last[$i] = "ffff";
}
}
// Rebuild the final long form IPV6 address
$first = iqblockcountry_ip2long6(implode(":", $first));
$last = iqblockcountry_ip2long6(implode(":", $last));
$in_range = ($ip >= $first && $ip <= $last);
return $in_range;
}
function iqblockcountry_validate_ip_in_list($ipaddress,$ipv4list,$ipv6list,$iplist)
{
$match = FALSE;
if (iqblockcountry_is_valid_ipv4($ipaddress) && is_array($ipv4list))
{
foreach ($ipv4list AS $iprange)
{
if (iqblockcountry_ip_in_ipv4_range($ipaddress,$iprange))
{
$match = TRUE;
}
}
}
elseif (iqblockcountry_is_valid_ipv6($ipaddress) && is_array($ipv6list))
{
foreach ($ipv6list AS $iprange)
{
$ipaddress6 = iqblockcountry_get_ipv6_full($ipaddress);
if (iqblockcountry_ipv6_in_range($ipaddress6,$iprange))
{
$match = TRUE;
}
}
}
if ((iqblockcountry_is_valid_ipv4($ipaddress) || iqblockcountry_is_valid_ipv6($ipaddress)) && is_array($iplist))
{
if (in_array($ipaddress,$iplist))
{
$match = TRUE;
}
}
return $match;
}