<?php
/**
 * 签名助手 2017/11/19
 * Class SignatureHelper
 */
class AliSmsHelper {
    /**
     * 生成签名并发起请求
     *
     * @param $accessKeyId string AccessKeyId (https://ak-console.aliyun.com/)
     * @param $accessKeySecret string AccessKeySecret
     * @param $domain string API接口所在域名
     * @param $params array API具体参数
     * @param $security boolean 使用https
     * @param $method boolean 使用GET或POST方法请求，VPC仅支持POST
     * @return bool|\stdClass 返回API接口调用结果，当发生错误时返回false
     */
    public function request($accessKeyId, $accessKeySecret, $domain, $params, $security=false, $method='POST') {
        $apiParams = array_merge(array (
            "SignatureMethod" => "HMAC-SHA1",
            "SignatureNonce" => uniqid(mt_rand(0,0xffff), true),
            "SignatureVersion" => "1.0",
            "AccessKeyId" => $accessKeyId,
            "Timestamp" => gmdate("Y-m-d\TH:i:s\Z"),
            "Format" => "JSON",
        ), $params);
        ksort($apiParams);
        $sortedQueryStringTmp = "";
        foreach ($apiParams as $key => $value) {
            if(!is_array($value))
                $sortedQueryStringTmp .= "&" . $this->encode($key) . "=" . $this->encode($value);
        }
        $stringToSign = "${method}&%2F&" . $this->encode(substr($sortedQueryStringTmp, 1));
        $sign = base64_encode(hash_hmac("sha1", $stringToSign, $accessKeySecret . "&",true));
        $signature = $this->encode($sign);
        $url = ($security ? 'https' : 'http')."://{$domain}/";
        try {
            $content = $this->fetchContent($url, $method, "Signature={$signature}{$sortedQueryStringTmp}");
            return $content;
        } catch( \Exception $e) {
            throw $e;
        }
    }
    private function encode($str){
        $res = urlencode($str);
        $res = preg_replace("/\+/", "%20", $res);
        $res = preg_replace("/\*/", "%2A", $res);
        $res = preg_replace("/%7E/", "~", $res);
        return $res;
    }
    private function fetchContent($url, $method, $body){
        $ch = curl_init();
        if($method == 'POST') {
            curl_setopt($ch, CURLOPT_POST, 1);//post提交方式
            curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
        } else {
            $url .= '?'.$body;
        }
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);//15秒吧 启动时会有延迟
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            "x-sdk-client" => "php/2.0.0"
        ));
        if(substr($url, 0,5) == 'https') {
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        }
        $rtn = curl_exec($ch);
        if($rtn === false) {
            // 大多由设置等原因引起，一般无法保障后续逻辑正常执行，
            // 所以这里触发的是E_USER_ERROR，会终止脚本执行，无法被try...catch捕获，需要用户排查环境、网络等故障
            throw new Exception("[CURL_" . curl_errno($ch) . "]: " . curl_error($ch));
        }
        curl_close($ch);
        return $rtn;
    }
}
/**
 * 发送短信
 */
function alisms_sendSms($telphone,$sms_template_code,$sms_free_sign_name,$exparams=array()) {    
    $accessKeyId=AliSMSAccessKey;
    $accessKeySecret=AliSMSAccessSecret;   
    if(empty($accessKeyId) || empty($accessKeySecret)){
        throw new GeneralException("","没有配置短信key/secret");
    }     
    $smsflowno="SMS".time()."-".rand(123456,654321);    
    $params = array ();
    // *** 需用户填写部分 ***
    // fixme 必填：是否启用https
    $security = false;        
    // fixme 必填: 短信接收号码
    $params["PhoneNumbers"] = $telphone;
    // fixme 必填: 短信签名，应严格按"签名名称"填写，请参考: https://dysms.console.aliyun.com/dysms.htm#/develop/sign
    $params["SignName"] = $sms_free_sign_name;
    // fixme 必填: 短信模板Code，应严格按"模板CODE"填写, 请参考: https://dysms.console.aliyun.com/dysms.htm#/develop/template
    $params["TemplateCode"] = $sms_template_code;
    // fixme 可选: 设置模板参数, 假如模板中存在变量需要替换则为必填项
    $params['TemplateParam'] =count($exparams)<=0?"":json_encode($exparams);
    // fixme 可选: 设置发送短信流水号
    $params['OutId'] = $smsflowno;
    // fixme 可选: 上行短信扩展码, 扩展码字段控制在7位或以下，无特殊需求用户请忽略此字段
    //$params['SmsUpExtendCode'] = "1234567";
    // *** 需用户填写部分结束, 以下代码若无必要无需更改 ***
    if(!empty($params["TemplateParam"]) && is_array($params["TemplateParam"])) {
        $params["TemplateParam"] = json_encode($params["TemplateParam"], JSON_UNESCAPED_UNICODE);
    }
    // 初始化SignatureHelper实例用于设置参数，签名以及发送请求
    $helper = new AliSmsHelper();
    // 此处可能会抛出异常，注意catch
    $reqres = $helper->request(
        $accessKeyId,
        $accessKeySecret,
        "dysmsapi.aliyuncs.com",
        array_merge($params, array(
            "RegionId" => "cn-hangzhou",
            "Action" => "SendSms",
            "Version" => "2017-05-25",
        )),
        $security
    );
    $result=@json_decode($reqres,true);
    if(is_array($result) && $result["Message"]=="OK" && $result["Code"]=="OK"){
        return true;
    }else{
        $except_msg  ="短信消息提醒服务发生错误了啊  telphone:".$telphone." ]\n";
        $except_msg .="   reqres：".$reqres."\n";              
        eeglobal_log_handler('smsbase_sendSms','error',$except_msg);
        $message="";
        if($result && !empty($result["Code"]))
            $message.="【".$result["Code"]."】";
        if($result && !empty($result["Message"]))
            $message.="  ".$result["Message"]."";            
        $message=empty($message)?"短信发送失败":"短信发送失败:".$message;
        throw new GeneralException("sms",$message);
    }
}