腾讯云通讯IM

一时失言乱红尘 2021-09-18 08:26 590阅读 0赞

后台php

static private $private_key_string = <<<'EOT'
    -----BEGIN PRIVATE KEY-----
    MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQg1vO5O6aTwatkxuTx
    EO40+4t3og2hfOAsxyLAelcL6sChRANCAATL0UvOyVnE78Y8GjUFSwlA7ze/1X8z
    eHD4lOYF1DWhf0yrIUtA6cCU/5ysnAr3QARkhsNg3wM2Dkw206POqpVN
    -----END PRIVATE KEY-----
    EOT;
    
    public function getSig(){
    /**************************************************************************/
            // 生成用户 IM 签名
    
            $sig = $this->genSig($nickName);//生成usersig
    $dataReturn['sig'] = $sig;
                $dataReturn['identifier'] = $nickName;
                $dataReturn['avChatRoomId'] = $avChatRoomId;
                response('0',$dataReturn);
    }
     /**
         * 生成usersig
         * @param string $identifier 用户名
         * @param uint $expire usersig有效期 默认为180天
         * @return string 生成的UserSig 失败时为false
         */
        public function genSig($identifier, $expire = 15552001) {
            $json = Array(
                'TLS.account_type' => '0',
                'TLS.identifier' => $identifier,
                'TLS.appid_at_3rd' => '0',
                'TLS.sdk_appid' => '1400187604',
                'TLS.expire_after' => (string) $expire,
                'TLS.version' => '201512300001',
                'TLS.time' => (string) time()
            );
            $err = '';
            $content = $this->genSignContent($json, $err);
            $signature = $this->signs($content, $err);
    
            $json['TLS.sig'] = base64_encode($signature);
    
            if ($json['TLS.sig'] === false) {
                throw new \Exception('base64_encode error');
            }
            $json_text = json_encode($json);
            if ($json_text === false) {
                throw new \Exception('json_encode error');
            }
            $compressed = gzcompress($json_text);
            if ($compressed === false) {
                throw new \Exception('gzcompress error');
            }
    
            return $this->base64Encode($compressed);
        }
    
        /**
         * 根据json内容生成需要签名的buf串
         * @param array $json 票据json对象
         * @return string 按标准格式生成的用于签名的字符串
         * 失败时返回false
         */
        private function genSignContent(array $json) {
            $content = '';
            static $aid3rd = 'TLS.appid_at_3rd';
            if(isset($json[$aid3rd])) {
                $content .= "{$aid3rd}:{$json[$aid3rd]}\n";
            }
            static $members = Array(
                'TLS.account_type',
                'TLS.identifier',
                'TLS.sdk_appid',
                'TLS.time',
                'TLS.expire_after'
            );
            foreach ($members as $member) {
                if (!isset($json[$member])) {
                    throw new \Exception('json need ' . $member);
                }
                $content .= "{$member}:{$json[$member]}\n";
            }
            return $content;
        }
    
        /**
         * ECDSA-SHA256签名
         * @param string $data 需要签名的数据
         * @return string 返回签名 失败时返回false
         */
        private function signs($data) {
            $signature = '';
            if (!openssl_sign($data, $signature, self::$private_key_string, 'SHA256')) {
                throw new \Exception(openssl_error_string());
            }
    
            return $signature;
        }
    
    
        /**
         * 用于url的base64encode
         * '+' => '*', '/' => '-', '=' => '_'
         * @param string $string 需要编码的数据
         * @return string 编码后的base64串，失败返回false
         */
        private function base64Encode($string) {
            static $replace = Array('+' => '*', '/' => '-', '=' => '_');
            $base64 = base64_encode($string);
            if ($base64 === false) {
                throw new \Exception('base64_encode error');
            }
            return str_replace(array_keys($replace), array_values($replace), $base64);
        }
    
        // 生成管道id
        public function getAvChatRoomId()
        {
            //日期:10位 timestamp
            $datetime = time();
            //随机数
            $newnum = $this->getNonceNums();
            return $datetime . $newnum;
        }
    
        //生成随机数字
        function getNonceNums($numLen = 4)
        {
            $chars = "0123456789";
            $str = "";
            for ($i = 0; $i < $numLen; $i++) {
                $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
            }
            return $str;
        }

小程序前端

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