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@ -133,42 +133,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
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define("GET", true);
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}
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/**
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* Checks if a string or whatever is empty.
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* @param $str The thingy to check
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* @return boolean True if it's empty or whatever.
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*/
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function is_empty($str) {
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return (is_null($str) || !isset($str) || $str == '');
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}
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/**
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* Checks if an email address is valid.
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* @param string $email Email to check
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* @return boolean True if email passes validation, else false.
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*/
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function isValidEmail($email) {
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return filter_var($email, FILTER_VALIDATE_EMAIL);
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}
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/**
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* Hashes the given plaintext password
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* @param String $password
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* @return String the hash, using bcrypt
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*/
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function encryptPassword($password) {
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return password_hash($password, PASSWORD_BCRYPT);
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}
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/**
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* Securely verify a password and its hash
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* @param String $password
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* @param String $hash the hash to compare to
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* @return boolean True if password OK, else false
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*/
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function comparePassword($password, $hash) {
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return password_verify($password, $hash);
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}
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function dieifnotloggedin() {
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if ($_SESSION['loggedin'] != true) {
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@ -193,44 +157,6 @@ function checkDBError($specials = []) {
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}
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}
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/*
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* http://stackoverflow.com/a/20075147
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*/
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if (!function_exists('base_url')) {
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function base_url($atRoot = FALSE, $atCore = FALSE, $parse = FALSE) {
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if (isset($_SERVER['HTTP_HOST'])) {
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$http = isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off' ? 'https' : 'http';
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$hostname = $_SERVER['HTTP_HOST'];
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$dir = str_replace(basename($_SERVER['SCRIPT_NAME']), '', $_SERVER['SCRIPT_NAME']);
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$core = preg_split('@/@', str_replace($_SERVER['DOCUMENT_ROOT'], '', realpath(dirname(__FILE__))), NULL, PREG_SPLIT_NO_EMPTY);
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$core = $core[0];
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$tmplt = $atRoot ? ($atCore ? "%s://%s/%s/" : "%s://%s/") : ($atCore ? "%s://%s/%s/" : "%s://%s%s");
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$end = $atRoot ? ($atCore ? $core : $hostname) : ($atCore ? $core : $dir);
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$base_url = sprintf($tmplt, $http, $hostname, $end);
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} else
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$base_url = 'http://localhost/';
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if ($parse) {
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$base_url = parse_url($base_url);
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if (isset($base_url['path']))
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if ($base_url['path'] == '/')
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$base_url['path'] = '';
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}
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return $base_url;
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}
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}
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function redirectToPageId($id, $args, $dontdie) {
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header('Location: ' . URL . '?id=' . $id . $args);
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if (is_null($dontdie)) {
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die("Please go to " . URL . '?id=' . $id . $args);
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}
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}
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function redirectIfNotLoggedIn() {
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if ($_SESSION['loggedin'] !== TRUE) {
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@ -239,132 +165,6 @@ function redirectIfNotLoggedIn() {
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}
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}
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/**
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* Check if a given ipv4 address is in a given cidr
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* @param string $ip IP to check in IPV4 format eg. 127.0.0.1
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* @param string $range IP/CIDR netmask eg. 127.0.0.0/24, also 127.0.0.1 is accepted and /32 assumed
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* @return boolean true if the ip is in this range / false if not.
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* @author Thorsten Ott <https://gist.github.com/tott/7684443>
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*/
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function ip4_in_cidr($ip, $cidr) {
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if (strpos($cidr, '/') == false) {
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$cidr .= '/32';
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}
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// $range is in IP/CIDR format eg 127.0.0.1/24
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list( $cidr, $netmask ) = explode('/', $cidr, 2);
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$range_decimal = ip2long($cidr);
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$ip_decimal = ip2long($ip);
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$wildcard_decimal = pow(2, ( 32 - $netmask)) - 1;
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$netmask_decimal = ~ $wildcard_decimal;
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return ( ( $ip_decimal & $netmask_decimal ) == ( $range_decimal & $netmask_decimal ) );
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}
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/**
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* Check if a given ipv6 address is in a given cidr
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* @param string $ip IP to check in IPV6 format
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* @param string $cidr CIDR netmask
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* @return boolean true if the IP is in this range, false otherwise.
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* @author MW. <https://stackoverflow.com/a/7952169>
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*/
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function ip6_in_cidr($ip, $cidr) {
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$address = inet_pton($ip);
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$subnetAddress = inet_pton(explode("/", $cidr)[0]);
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$subnetMask = explode("/", $cidr)[1];
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$addr = str_repeat("f", $subnetMask / 4);
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switch ($subnetMask % 4) {
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case 0:
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break;
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case 1:
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$addr .= "8";
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break;
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case 2:
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$addr .= "c";
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break;
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case 3:
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$addr .= "e";
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break;
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}
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$addr = str_pad($addr, 32, '0');
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$addr = pack("H*", $addr);
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$binMask = $addr;
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return ($address & $binMask) == $subnetAddress;
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}
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/**
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* Check if the REMOTE_ADDR is on Cloudflare's network.
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* @return boolean true if it is, otherwise false
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*/
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function validateCloudflare() {
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if (filter_var($_SERVER["REMOTE_ADDR"], FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
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// Using IPv6
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$cloudflare_ips_v6 = [
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"2400:cb00::/32",
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"2405:8100::/32",
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"2405:b500::/32",
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"2606:4700::/32",
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"2803:f800::/32",
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"2c0f:f248::/32",
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"2a06:98c0::/29"
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];
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$valid = false;
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foreach ($cloudflare_ips_v6 as $cidr) {
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if (ip6_in_cidr($_SERVER["REMOTE_ADDR"], $cidr)) {
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$valid = true;
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break;
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}
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}
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} else {
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// Using IPv4
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$cloudflare_ips_v4 = [
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"103.21.244.0/22",
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"103.22.200.0/22",
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"103.31.4.0/22",
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"104.16.0.0/12",
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"108.162.192.0/18",
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"131.0.72.0/22",
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"141.101.64.0/18",
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"162.158.0.0/15",
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"172.64.0.0/13",
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"173.245.48.0/20",
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"188.114.96.0/20",
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"190.93.240.0/20",
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"197.234.240.0/22",
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"198.41.128.0/17"
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];
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$valid = false;
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foreach ($cloudflare_ips_v4 as $cidr) {
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if (ip4_in_cidr($_SERVER["REMOTE_ADDR"], $cidr)) {
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$valid = true;
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break;
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}
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}
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}
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return $valid;
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}
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/**
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* Makes a good guess at the client's real IP address.
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*
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* @return string Client IP or `0.0.0.0` if we can't find anything
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*/
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function getClientIP() {
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// If CloudFlare is in the mix, we should use it.
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// Check if the request is actually from CloudFlare before trusting it.
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if (isset($_SERVER["HTTP_CF_CONNECTING_IP"])) {
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if (validateCloudflare()) {
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return $_SERVER["HTTP_CF_CONNECTING_IP"];
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}
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}
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if (isset($_SERVER["REMOTE_ADDR"])) {
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return $_SERVER["REMOTE_ADDR"];
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}
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return "0.0.0.0"; // This will not happen unless we aren't a web server
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}
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/**
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* Check if the client's IP has been doing too many brute-force-friendly
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* requests lately.
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@ -378,12 +178,12 @@ function engageRateLimit() {
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global $database;
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$delay = date("Y-m-d H:i:s", strtotime("-2 seconds"));
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$database->delete('rate_limit', ["lastaction[<]" => $delay]);
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if ($database->has('rate_limit', ["AND" => ["ipaddr" => getClientIP()]])) {
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if ($database->has('rate_limit', ["AND" => ["ipaddr" => IPUtils::getClientIP()]])) {
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http_response_code(429);
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// JSONify it so API clients don't scream too loud
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die(json_encode(["status" => "ERROR", "msg" => "You're going too fast. Slow down, mkay?"]));
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} else {
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// Add a record for the IP address
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$database->insert('rate_limit', ["ipaddr" => getClientIP(), "lastaction" => date("Y-m-d H:i:s")]);
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$database->insert('rate_limit', ["ipaddr" => IPUtils::getClientIP(), "lastaction" => date("Y-m-d H:i:s")]);
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}
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}
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