<?php
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/*
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* This file is part of the overtrue/wechat.
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*
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* (c) overtrue <i@overtrue.me>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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namespace EasyWeChat\Kernel\Support;
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/*
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* helpers.
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*
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* @author overtrue <i@overtrue.me>
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*/
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/**
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* Generate a signature.
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*
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* @param array $attributes
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* @param string $key
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* @param string $encryptMethod
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*
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* @return string
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*/
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function generate_sign(array $attributes, $key, $encryptMethod = 'md5')
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{
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ksort($attributes);
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$attributes['key'] = $key;
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return strtoupper(call_user_func_array($encryptMethod, [urldecode(http_build_query($attributes))]));
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}
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/**
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* @param string $signType
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* @param string $secretKey
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*
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* @return \Closure|string
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*/
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function get_encrypt_method(string $signType, string $secretKey = '')
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{
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if ('HMAC-SHA256' === $signType) {
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return function ($str) use ($secretKey) {
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return hash_hmac('sha256', $str, $secretKey);
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};
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}
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return 'md5';
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}
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/**
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* Get client ip.
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*
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* @return string
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*/
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function get_client_ip()
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{
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if (!empty($_SERVER['REMOTE_ADDR'])) {
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$ip = $_SERVER['REMOTE_ADDR'];
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} else {
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// for php-cli(phpunit etc.)
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$ip = defined('PHPUNIT_RUNNING') ? '127.0.0.1' : gethostbyname(gethostname());
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}
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return filter_var($ip, FILTER_VALIDATE_IP) ?: '127.0.0.1';
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}
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/**
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* Get current server ip.
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*
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* @return string
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*/
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function get_server_ip()
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{
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if (!empty($_SERVER['SERVER_ADDR'])) {
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$ip = $_SERVER['SERVER_ADDR'];
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} elseif (!empty($_SERVER['SERVER_NAME'])) {
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$ip = gethostbyname($_SERVER['SERVER_NAME']);
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} else {
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// for php-cli(phpunit etc.)
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$ip = defined('PHPUNIT_RUNNING') ? '127.0.0.1' : gethostbyname(gethostname());
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}
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return filter_var($ip, FILTER_VALIDATE_IP) ?: '127.0.0.1';
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}
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/**
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* Return current url.
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*
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* @return string
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*/
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function current_url()
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{
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$protocol = 'http://';
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if ((!empty($_SERVER['HTTPS']) && 'off' !== $_SERVER['HTTPS']) || ($_SERVER['HTTP_X_FORWARDED_PROTO'] ?? 'http') === 'https') {
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$protocol = 'https://';
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}
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return $protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
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}
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/**
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* Return random string.
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*
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* @param string $length
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*
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* @return string
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*/
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function str_random($length)
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{
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return Str::random($length);
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}
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/**
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* @param string $content
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* @param string $publicKey
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*
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* @return string
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*/
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function rsa_public_encrypt($content, $publicKey)
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{
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$encrypted = '';
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openssl_public_encrypt($content, $encrypted, openssl_pkey_get_public($publicKey), OPENSSL_PKCS1_OAEP_PADDING);
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return base64_encode($encrypted);
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}
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