- update service wechat

composer.json

@@ -30,6 +30,7 @@
     "ext-bcmath": "*",
     "ext-iconv": "*",
     "ext-curl": "*",
+    "ext-dom": "*",
     "topthink/framework": "^6.0.0",
     "topthink/think-orm": "^2.0",
     "topthink/think-view": "^1.0",

src/service/WeChat/ErrorCode.php

@@ -0,0 +1,51 @@
+<?php
+
+// +----------------------------------------------------------------------
+// | ThinkLibrary 6.0 for ThinkPhP 6.0
+// +----------------------------------------------------------------------
+// | 版权所有 2017~2020 [ https://www.dtapp.net ]
+// +----------------------------------------------------------------------
+// | 官方网站: https://gitee.com/liguangchun/ThinkLibrary
+// +----------------------------------------------------------------------
+// | 开源协议 ( https://mit-license.org )
+// +----------------------------------------------------------------------
+// | gitee 仓库地址 ：https://gitee.com/liguangchun/ThinkLibrary
+// | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
+// | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
+// +----------------------------------------------------------------------
+
+namespace DtApp\ThinkLibrary\service\WeChat;
+
+/**
+ * error code 说明.
+ * <ul>
+ *    <li>-40001: 签名验证错误</li>
+ *    <li>-40002: xml解析失败</li>
+ *    <li>-40003: sha加密生成签名失败</li>
+ *    <li>-40004: encodingAesKey 非法</li>
+ *    <li>-40005: appid 校验错误</li>
+ *    <li>-40006: aes 加密失败</li>
+ *    <li>-40007: aes 解密失败</li>
+ *    <li>-40008: 解密后得到的buffer非法</li>
+ *    <li>-40009: base64加密失败</li>
+ *    <li>-40010: base64解密失败</li>
+ *    <li>-40011: 生成xml失败</li>
+ * </ul>
+ * Class ErrorCode
+ * @package DtApp\ThinkLibrary\service\WeChat
+ */
+class ErrorCode
+{
+    public static $OK = 0;
+    public static $ValidateSignatureError = -40001;
+    public static $ParseXmlError = -40002;
+    public static $ComputeSignatureError = -40003;
+    public static $IllegalAesKey = -40004;
+    public static $ValidateAppidError = -40005;
+    public static $EncryptAESError = -40006;
+    public static $DecryptAESError = -40007;
+    public static $IllegalBuffer = -40008;
+    public static $EncodeBase64Error = -40009;
+    public static $DecodeBase64Error = -40010;
+    public static $GenReturnXmlError = -40011;
+}

src/service/WeChat/PKCS7Encoder.php

@@ -0,0 +1,68 @@
+<?php
+
+// +----------------------------------------------------------------------
+// | ThinkLibrary 6.0 for ThinkPhP 6.0
+// +----------------------------------------------------------------------
+// | 版权所有 2017~2020 [ https://www.dtapp.net ]
+// +----------------------------------------------------------------------
+// | 官方网站: https://gitee.com/liguangchun/ThinkLibrary
+// +----------------------------------------------------------------------
+// | 开源协议 ( https://mit-license.org )
+// +----------------------------------------------------------------------
+// | gitee 仓库地址 ：https://gitee.com/liguangchun/ThinkLibrary
+// | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
+// | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
+// +----------------------------------------------------------------------
+
+namespace DtApp\ThinkLibrary\service\WeChat;
+
+/**
+ * 提供基于PKCS7算法的加解密接口
+ * Class PKCS7Encoder
+ * @package DtApp\ThinkLibrary\service\WeChat
+ */
+class PKCS7Encoder
+{
+
+    public static $block_size = 32;
+
+    /**
+     * 对需要加密的明文进行填充补位
+     * @param $text 需要进行填充补位操作的明文
+     * @return 补齐明文字符串
+     */
+    function encode($text)
+    {
+        $block_size = PKCS7Encoder::$block_size;
+        $text_length = strlen($text);
+        //计算需要填充的位数
+        $amount_to_pad = PKCS7Encoder::$block_size - ($text_length % PKCS7Encoder::$block_size);
+        if ($amount_to_pad == 0) {
+            $amount_to_pad = PKCS7Encoder::block_size;
+        }
+        //获得补位所用的字符
+        $pad_chr = chr($amount_to_pad);
+        $tmp = "";
+        for ($index = 0; $index < $amount_to_pad; $index++) {
+            $tmp .= $pad_chr;
+        }
+        return $text . $tmp;
+    }
+
+    /**
+     * 对解密后的明文进行补位删除
+     * @param decrypted 解密后的明文
+     * @return 删除填充补位后的明文
+     */
+    function decode($text)
+    {
+
+        $pad = ord(substr($text, -1));
+        if ($pad < 1 || $pad > 32) {
+            $pad = 0;
+        }
+        return substr($text, 0, (strlen($text) - $pad));
+    }
+
+
+}

src/service/WeChat/Prpcrypt.php

@@ -0,0 +1,130 @@
+<?php
+
+// +----------------------------------------------------------------------
+// | ThinkLibrary 6.0 for ThinkPhP 6.0
+// +----------------------------------------------------------------------
+// | 版权所有 2017~2020 [ https://www.dtapp.net ]
+// +----------------------------------------------------------------------
+// | 官方网站: https://gitee.com/liguangchun/ThinkLibrary
+// +----------------------------------------------------------------------
+// | 开源协议 ( https://mit-license.org )
+// +----------------------------------------------------------------------
+// | gitee 仓库地址 ：https://gitee.com/liguangchun/ThinkLibrary
+// | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
+// | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
+// +----------------------------------------------------------------------
+
+namespace DtApp\ThinkLibrary\service\WeChat;
+
+/**
+ * 提供接收和推送给公众平台消息的加解密接口
+ * Class Prpcrypt
+ * @package DtApp\ThinkLibrary\service\WeChat
+ */
+class Prpcrypt
+{
+    public $key;
+
+    function Prpcrypt($k)
+    {
+        $this->key = base64_decode($k . "=");
+    }
+
+    /**
+     * 对明文进行加密
+     * @param string $text 需要加密的明文
+     * @param $appid
+     * @return array 加密后的密文
+     */
+    public function encrypt($text, $appid)
+    {
+
+        try {
+            //获得16位随机字符串，填充到明文之前
+            $random = $this->getRandomStr();
+            $text = $random . pack("N", strlen($text)) . $text . $appid;
+            // 网络字节序
+            $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
+            $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
+            $iv = substr($this->key, 0, 16);
+            //使用自定义的填充方式对明文进行补位填充
+            $pkc_encoder = new PKCS7Encoder;
+            $text = $pkc_encoder->encode($text);
+            mcrypt_generic_init($module, $this->key, $iv);
+            //加密
+            $encrypted = mcrypt_generic($module, $text);
+            mcrypt_generic_deinit($module);
+            mcrypt_module_close($module);
+
+            //print(base64_encode($encrypted));
+            //使用BASE64对加密后的字符串进行编码
+            return array(ErrorCode::$OK, base64_encode($encrypted));
+        } catch (Exception $e) {
+            //print $e;
+            return array(ErrorCode::$EncryptAESError, null);
+        }
+    }
+
+    /**
+     * 对密文进行解密
+     * @param string $encrypted 需要解密的密文
+     * @return array
+     */
+    public function decrypt($encrypted, $appid)
+    {
+
+        try {
+            //使用BASE64对需要解密的字符串进行解码
+            $ciphertext_dec = base64_decode($encrypted);
+            $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
+            $iv = substr($this->key, 0, 16);
+            mcrypt_generic_init($module, $this->key, $iv);
+
+            //解密
+            $decrypted = mdecrypt_generic($module, $ciphertext_dec);
+            mcrypt_generic_deinit($module);
+            mcrypt_module_close($module);
+        } catch (Exception $e) {
+            return array(ErrorCode::$DecryptAESError, null);
+        }
+
+
+        try {
+            //去除补位字符
+            $pkc_encoder = new PKCS7Encoder;
+            $result = $pkc_encoder->decode($decrypted);
+            //去除16位随机字符串,网络字节序和AppId
+            if (strlen($result) < 16)
+                return "";
+            $content = substr($result, 16, strlen($result));
+            $len_list = unpack("N", substr($content, 0, 4));
+            $xml_len = $len_list[1];
+            $xml_content = substr($content, 4, $xml_len);
+            $from_appid = substr($content, $xml_len + 4);
+        } catch (Exception $e) {
+            //print $e;
+            return array(ErrorCode::$IllegalBuffer, null);
+        }
+        if ($from_appid != $appid)
+            return array(ErrorCode::$ValidateAppidError, null);
+        return array(0, $xml_content);
+
+    }
+
+
+    /**
+     * 随机生成16位字符串
+     * @return string 生成的字符串
+     */
+    function getRandomStr()
+    {
+
+        $str = "";
+        $str_pol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
+        $max = strlen($str_pol) - 1;
+        for ($i = 0; $i < 16; $i++) {
+            $str .= $str_pol[mt_rand(0, $max)];
+        }
+        return $str;
+    }
+}

src/service/WeChat/SHA1.php

@@ -0,0 +1,49 @@
+<?php
+
+// +----------------------------------------------------------------------
+// | ThinkLibrary 6.0 for ThinkPhP 6.0
+// +----------------------------------------------------------------------
+// | 版权所有 2017~2020 [ https://www.dtapp.net ]
+// +----------------------------------------------------------------------
+// | 官方网站: https://gitee.com/liguangchun/ThinkLibrary
+// +----------------------------------------------------------------------
+// | 开源协议 ( https://mit-license.org )
+// +----------------------------------------------------------------------
+// | gitee 仓库地址 ：https://gitee.com/liguangchun/ThinkLibrary
+// | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
+// | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
+// +----------------------------------------------------------------------
+
+namespace DtApp\ThinkLibrary\service\WeChat;
+
+use Exception;
+
+/**
+ * 计算公众平台的消息签名接口
+ * Class SHA1
+ * @package DtApp\ThinkLibrary\service\WeChat
+ */
+class SHA1
+{
+    /**
+     * 用SHA1算法生成安全签名
+     * @param string $token 票据
+     * @param string $timestamp 时间戳
+     * @param string $nonce 随机字符串
+     * @param $encrypt_msg
+     * @return array
+     */
+    public function getSHA1($token, $timestamp, $nonce, $encrypt_msg)
+    {
+        //排序
+        try {
+            $array = array($encrypt_msg, $token, $timestamp, $nonce);
+            sort($array, SORT_STRING);
+            $str = implode($array);
+            return array(ErrorCode::$OK, sha1($str));
+        } catch (Exception $e) {
+            //print $e . "\n";
+            return array(ErrorCode::$ComputeSignatureError, null);
+        }
+    }
+}

src/service/WeChat/WXBizMsgCryptService.php

@@ -0,0 +1,150 @@
+<?php
+
+// +----------------------------------------------------------------------
+// | ThinkLibrary 6.0 for ThinkPhP 6.0
+// +----------------------------------------------------------------------
+// | 版权所有 2017~2020 [ https://www.dtapp.net ]
+// +----------------------------------------------------------------------
+// | 官方网站: https://gitee.com/liguangchun/ThinkLibrary
+// +----------------------------------------------------------------------
+// | 开源协议 ( https://mit-license.org )
+// +----------------------------------------------------------------------
+// | gitee 仓库地址 ：https://gitee.com/liguangchun/ThinkLibrary
+// | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
+// | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
+// +----------------------------------------------------------------------
+
+namespace DtApp\ThinkLibrary\service\WeChat;
+
+
+class WXBizMsgCryptService
+{
+    private $token;
+    private $encodingAesKey;
+    private $appId;
+
+    /**
+     * 构造函数
+     * @param $token string 公众平台上，开发者设置的token
+     * @param $encodingAesKey string 公众平台上，开发者设置的EncodingAESKey
+     * @param $appId string 公众平台的appId
+     */
+    public function WXBizMsgCrypt($token, $encodingAesKey, $appId)
+    {
+        $this->token = $token;
+        $this->encodingAesKey = $encodingAesKey;
+        $this->appId = $appId;
+    }
+
+    /**
+     * 将公众平台回复用户的消息加密打包.
+     * <ol>
+     *    <li>对要发送的消息进行AES-CBC加密</li>
+     *    <li>生成安全签名</li>
+     *    <li>将消息密文和安全签名打包成xml格式</li>
+     * </ol>
+     *
+     * @param $replyMsg string 公众平台待回复用户的消息，xml格式的字符串
+     * @param $timeStamp string 时间戳，可以自己生成，也可以用URL参数的timestamp
+     * @param $nonce string 随机串，可以自己生成，也可以用URL参数的nonce
+     * @param &$encryptMsg string 加密后的可以直接回复用户的密文，包括msg_signature, timestamp, nonce, encrypt的xml格式的字符串,
+     *                      当return返回0时有效
+     *
+     * @return int 成功0，失败返回对应的错误码
+     */
+    public function encryptMsg($replyMsg, $timeStamp, $nonce, &$encryptMsg)
+    {
+        $pc = new Prpcrypt($this->encodingAesKey);
+
+        //加密
+        $array = $pc->encrypt($replyMsg, $this->appId);
+        $ret = $array[0];
+        if ($ret != 0) {
+            return $ret;
+        }
+
+        if ($timeStamp == null) {
+            $timeStamp = time();
+        }
+        $encrypt = $array[1];
+
+        //生成安全签名
+        $sha1 = new SHA1;
+        $array = $sha1->getSHA1($this->token, $timeStamp, $nonce, $encrypt);
+        $ret = $array[0];
+        if ($ret != 0) {
+            return $ret;
+        }
+        $signature = $array[1];
+
+        //生成发送的xml
+        $xmlparse = new XMLParse;
+        $encryptMsg = $xmlparse->generate($encrypt, $signature, $timeStamp, $nonce);
+        return ErrorCode::$OK;
+    }
+
+
+    /**
+     * 检验消息的真实性，并且获取解密后的明文.
+     * <ol>
+     *    <li>利用收到的密文生成安全签名，进行签名验证</li>
+     *    <li>若验证通过，则提取xml中的加密消息</li>
+     *    <li>对消息进行解密</li>
+     * </ol>
+     *
+     * @param $msgSignature string 签名串，对应URL参数的msg_signature
+     * @param $timestamp string 时间戳 对应URL参数的timestamp
+     * @param $nonce string 随机串，对应URL参数的nonce
+     * @param $postData string 密文，对应POST请求的数据
+     * @param &$msg string 解密后的原文，当return返回0时有效
+     *
+     * @return int 成功0，失败返回对应的错误码
+     */
+    public function decryptMsg($msgSignature, $timestamp = null, $nonce, $postData, &$msg)
+    {
+        if (strlen($this->encodingAesKey) != 43) {
+            return ErrorCode::$IllegalAesKey;
+        }
+
+        $pc = new Prpcrypt($this->encodingAesKey);
+
+        //提取密文
+        $xmlparse = new XMLParse;
+        $array = $xmlparse->extract($postData);
+        $ret = $array[0];
+
+        if ($ret != 0) {
+            return $ret;
+        }
+
+        if ($timestamp == null) {
+            $timestamp = time();
+        }
+
+        $encrypt = $array[1];
+        $touser_name = $array[2];
+
+        //验证安全签名
+        $sha1 = new SHA1;
+        $array = $sha1->getSHA1($this->token, $timestamp, $nonce, $encrypt);
+        $ret = $array[0];
+
+        if ($ret != 0) {
+            return $ret;
+        }
+
+        $signature = $array[1];
+        if ($signature != $msgSignature) {
+            return ErrorCode::$ValidateSignatureError;
+        }
+
+        $result = $pc->decrypt($encrypt, $this->appId);
+        if ($result[0] != 0) {
+            return $result[0];
+        }
+        $msg = $result[1];
+
+        return ErrorCode::$OK;
+    }
+
+}

src/service/WeChat/WebApps.php

@@ -205,7 +205,6 @@ class WebApps extends Service
      */
     public function share()
     {
-        $this->grant_type = "client_credential";
         // 获取数据
         $accessToken = $this->getAccessToken();
         if (!isset($accessToken['access_token'])) throw  new WeChatException("获取access_token错误，" . $accessToken['errmsg']);
@@ -264,6 +263,7 @@ class WebApps extends Service
      */
     private function getAccessToken()
     {
+        $this->grant_type = "client_credential";
         // 文件名
         $file = "{$this->app->getRootPath()}runtime/{$this->app_id}_access_token.json";
         // 获取数据

src/service/WeChat/XMLParse.php

@@ -0,0 +1,69 @@
+<?php
+
+// +----------------------------------------------------------------------
+// | ThinkLibrary 6.0 for ThinkPhP 6.0
+// +----------------------------------------------------------------------
+// | 版权所有 2017~2020 [ https://www.dtapp.net ]
+// +----------------------------------------------------------------------
+// | 官方网站: https://gitee.com/liguangchun/ThinkLibrary
+// +----------------------------------------------------------------------
+// | 开源协议 ( https://mit-license.org )
+// +----------------------------------------------------------------------
+// | gitee 仓库地址 ：https://gitee.com/liguangchun/ThinkLibrary
+// | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
+// | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
+// +----------------------------------------------------------------------
+
+namespace DtApp\ThinkLibrary\service\WeChat;
+
+use Exception;
+
+/**
+ * 提供提取消息格式中的密文及生成回复消息格式的接口
+ * Class XMLParse
+ * @package DtApp\ThinkLibrary\service\WeChat
+ */
+class XMLParse
+{
+    /**
+     * 提取出xml数据包中的加密消息
+     * @param string $xmltext 待提取的xml字符串
+     * @return array 提取出的加密消息字符串
+     */
+    public function extract($xmltext)
+    {
+        libxml_disable_entity_loader(true);
+        try {
+            $xml = new \DOMDocument();
+            $xml->loadXML($xmltext);
+            $array_e = $xml->getElementsByTagName('Encrypt');
+            $array_a = $xml->getElementsByTagName('ToUserName');
+            $encrypt = $array_e->item(0)->nodeValue;
+            $tousername = $array_a->item(0)->nodeValue;
+            return array(0, $encrypt, $tousername);
+        } catch (Exception $e) {
+            //print $e . "\n";
+            return array(ErrorCode::$ParseXmlError, null, null);
+        }
+    }
+
+    /**
+     * 生成xml消息
+     * @param string $encrypt 加密后的消息密文
+     * @param string $signature 安全签名
+     * @param string $timestamp 时间戳
+     * @param string $nonce 随机字符串
+     * @return string
+     */
+    public function generate($encrypt, $signature, $timestamp, $nonce)
+    {
+        $format = "<xml>
+<Encrypt><![CDATA[%s]]></Encrypt>
+<MsgSignature><![CDATA[%s]]></MsgSignature>
+<TimeStamp>%s</TimeStamp>
+<Nonce><![CDATA[%s]]></Nonce>
+</xml>";
+        return sprintf($format, $encrypt, $signature, $timestamp, $nonce);
+    }
+
+}