信呼OA版本v2.3.8

2022-08-14 16:47:40 +08:00
parent 4640677d27
commit e3fcd913e3
1405 changed files with 133635 additions and 73 deletions
--- a/include/weixin/pkcs7Encoder.php
+++ b/include/weixin/pkcs7Encoder.php
@@ -0,0 +1,160 @@
+<?php
+
+include_once "errorCode.php";
+
+/**
+ * PKCS7Encoder class
+ *
+ * 提供基于PKCS7算法的加解密接口.
+ */
+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 || $pad > PKCS7Encoder::$block_size) {
+            $pad = 0;
+        }
+        return substr($text, 0, (strlen($text) - $pad));
+    }
+
+}
+
+/**
+ * Prpcrypt class
+ *
+ * 提供接收和推送给公众平台消息的加解密接口.
+ */
+class Prpcrypt
+{
+    public $key = null;
+    public $iv = null;
+
+    /**
+     * Prpcrypt constructor.
+     * @param $k
+     */
+    public function __construct($k)
+    {
+        $this->key = base64_decode($k . '=');
+        $this->iv = substr($this->key, 0, 16);
+
+    }
+
+    /**
+     * 加密
+     *
+     * @param $text
+     * @param $receiveId
+     * @return array
+     */
+    public function encrypt($text, $receiveId)
+    {
+        try {
+            //拼接
+            $text = $this->getRandomStr() . pack('N', strlen($text)) . $text . $receiveId;
+            //添加PKCS#7填充
+            $pkc_encoder = new PKCS7Encoder;
+            $text = $pkc_encoder->encode($text);
+            //加密
+            if (function_exists('openssl_encrypt')) {
+                $encrypted = openssl_encrypt($text, 'AES-256-CBC', $this->key, OPENSSL_ZERO_PADDING, $this->iv);
+            } else {
+                $encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $this->key, base64_decode($text), MCRYPT_MODE_CBC, $this->iv);
+            }
+            return array(ErrorCode::$OK, $encrypted);
+        } catch (Exception $e) {
+            print $e;
+            return array(MyErrorCode::$EncryptAESError, null);
+        }
+    }
+
+    /**
+     * 解密
+     *
+     * @param $encrypted
+     * @param $receiveId
+     * @return array
+     */
+    public function decrypt($encrypted, $receiveId)
+    {
+        try {
+            //解密
+            if (function_exists('openssl_decrypt')) {
+                $decrypted = openssl_decrypt($encrypted, 'AES-256-CBC', $this->key, OPENSSL_ZERO_PADDING, $this->iv);
+            } else {
+                $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $this->key, base64_decode($encrypted), MCRYPT_MODE_CBC, $this->iv);
+            }
+        } catch (Exception $e) {
+            return array(ErrorCode::$DecryptAESError, null);
+        }
+        try {
+            //删除PKCS#7填充
+            $pkc_encoder = new PKCS7Encoder;
+            $result = $pkc_encoder->decode($decrypted);
+            if (strlen($result) < 16) {
+                return array();
+            }
+            //拆分
+            $content = substr($result, 16, strlen($result));
+            $len_list = unpack('N', substr($content, 0, 4));
+            $xml_len = $len_list[1];
+            $xml_content = substr($content, 4, $xml_len);
+            $from_receiveId = substr($content, $xml_len + 4);
+        } catch (Exception $e) {
+            print $e;
+            return array(ErrorCode::$IllegalBuffer, null);
+        }
+        if ($from_receiveId != $receiveId) {
+            return array(ErrorCode::$ValidateCorpidError, null);
+        }
+        return array(0, $xml_content);
+    }
+
+    /**
+     * 生成随机字符串
+     *
+     * @return string
+     */
+    private function getRandomStr()
+    {
+        $str = '';
+        $str_pol = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyl';
+        $max = strlen($str_pol) - 1;
+        for ($i = 0; $i < 16; $i++) {
+            $str .= $str_pol[mt_rand(0, $max)];
+        }
+        return $str;
+    }
+}