Codehub微信公众号自动回复
sample.py
python
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#########################################################################
# Author: jonyqin
# Created Time: Thu 11 Sep 2014 03:55:41 PM CST
# File Name: demo.py
# Description: WXBizMsgCrypt 使用demo文件
#########################################################################
from WXBizMsgCrypt import WXBizMsgCrypt
if __name__ == "__main__":
"""
1.第三方回复加密消息给公众平台；
2.第三方收到公众平台发送的消息，验证消息的安全性，并对消息进行解密。
"""
encodingAESKey = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG"
to_xml = """ <xml><ToUserName><![CDATA[oia2TjjewbmiOUlr6X-1crbLOvLw]]></ToUserName><FromUserName><![CDATA[gh_7f083739789a]]></FromUserName><CreateTime>1407743423</CreateTime><MsgType> <![CDATA[video]]></MsgType><Video><MediaId><![CDATA[eYJ1MbwPRJtOvIEabaxHs7TX2D-HV71s79GUxqdUkjm6Gs2Ed1KF3ulAOA9H1xG0]]></MediaId><Title><![CDATA[testCallBackReplyVideo]]></Title><Descript ion><![CDATA[testCallBackReplyVideo]]></Description></Video></xml>"""
token = "spamtest"
nonce = "1320562132"
appid = "wx2c2769f8efd9abc2"
#测试加密接口
encryp_test = WXBizMsgCrypt(token,encodingAESKey,appid)
ret,encrypt_xml = encryp_test.EncryptMsg(to_xml,nonce)
print(ret,encrypt_xml)
#测试解密接口
timestamp = "1409735669"
msg_sign = "5d197aaffba7e9b25a30732f161a50dee96bd5fa"
from_xml = """<xml><ToUserName><![CDATA[gh_10f6c3c3ac5a]]></ToUserName><FromUserName><![CDATA[oyORnuP8q7ou2gfYjqLzSIWZf0rs]]></FromUserName><CreateTime>1409735668</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[abcdteT]]></Content><MsgId>6054768590064713728</MsgId><Encrypt><![CDATA[hyzAe4OzmOMbd6TvGdIOO6uBmdJoD0Fk53REIHvxYtJlE2B655HuD0m8KUePWB3+LrPXo87wzQ1QLvbeUgmBM4x6F8PGHQHFVAFmOD2LdJF9FrXpbUAh0B5GIItb52sn896wVsMSHGuPE328HnRGBcrS7C41IzDWyWNlZkyyXwon8T332jisa+h6tEDYsVticbSnyU8dKOIbgU6ux5VTjg3yt+WGzjlpKn6NPhRjpA912xMezR4kw6KWwMrCVKSVCZciVGCgavjIQ6X8tCOp3yZbGpy0VxpAe+77TszTfRd5RJSVO/HTnifJpXgCSUdUue1v6h0EIBYYI1BD1DlD+C0CR8e6OewpusjZ4uBl9FyJvnhvQl+q5rv1ixrcpCumEPo5MJSgM9ehVsNPfUM669WuMyVWQLCzpu9GhglF2PE=]]></Encrypt></xml>"""
decrypt_test = WXBizMsgCrypt(token,encodingAESKey,appid)
ret ,decryp_xml = decrypt_test.DecryptMsg(from_xml, msg_sign, timestamp, nonce)
print(ret ,decryp_xml)WXBizMsgCrypt.py
python
#!/usr/bin/env python
#-*- encoding:utf-8 -*-
""" 对公众平台发送给公众账号的消息加解密示例代码.
@copyright: Copyright (c) 1998-2014 Tencent Inc.
"""
# ------------------------------------------------------------------------
import base64
import string
import random
import hashlib
import time
import struct
from Crypto.Cipher import AES
import xml.etree.cElementTree as ET
import sys
import socket
class ierror:
WXBizMsgCrypt_OK = 0
WXBizMsgCrypt_ValidateSignature_Error = -40001
WXBizMsgCrypt_ParseXml_Error = -40002
WXBizMsgCrypt_ComputeSignature_Error = -40003
WXBizMsgCrypt_IllegalAesKey = -40004
WXBizMsgCrypt_ValidateAppid_Error = -40005
WXBizMsgCrypt_EncryptAES_Error = -40006
WXBizMsgCrypt_DecryptAES_Error = -40007
WXBizMsgCrypt_IllegalBuffer = -40008
WXBizMsgCrypt_EncodeBase64_Error = -40009
WXBizMsgCrypt_DecodeBase64_Error = -40010
WXBizMsgCrypt_GenReturnXml_Error = -40011
class FormatException(Exception):
pass
def throw_exception(message, exception_class=FormatException):
"""my define raise exception function"""
raise exception_class(message)
class SHA1:
"""计算公众平台的消息签名接口"""
def getSHA1(self, token, timestamp, nonce, encrypt):
"""用SHA1算法生成安全签名
@param token: 票据
@param timestamp: 时间戳
@param encrypt: 密文
@param nonce: 随机字符串
@return: 安全签名
"""
try:
sortlist = [token.encode(), timestamp.encode(), nonce.encode(), encrypt.encode()]
# print(sortlist)
sortlist.sort()
sha = hashlib.sha1()
sha.update(b"".join(sortlist))
return ierror.WXBizMsgCrypt_OK, sha.hexdigest()
except Exception as e:
#print e
import traceback
traceback.print_exc()
return ierror.WXBizMsgCrypt_ComputeSignature_Error, None
class XMLParse:
"""提供提取消息格式中的密文及生成回复消息格式的接口"""
# xml消息模板
AES_TEXT_RESPONSE_TEMPLATE = """<xml>
<Encrypt><![CDATA[%(msg_encrypt)s]]></Encrypt>
<MsgSignature><![CDATA[%(msg_signaturet)s]]></MsgSignature>
<TimeStamp>%(timestamp)s</TimeStamp>
<Nonce><![CDATA[%(nonce)s]]></Nonce>
</xml>"""
def extract(self, xmltext):
"""提取出xml数据包中的加密消息
@param xmltext: 待提取的xml字符串
@return: 提取出的加密消息字符串
"""
try:
xml_tree = ET.fromstring(xmltext)
encrypt = xml_tree.find("Encrypt")
touser_name = xml_tree.find("ToUserName")
return ierror.WXBizMsgCrypt_OK, encrypt.text, touser_name.text
except Exception as e:
#print e
return ierror.WXBizMsgCrypt_ParseXml_Error,None,None
def generate(self, encrypt, signature, timestamp, nonce):
"""生成xml消息
@param encrypt: 加密后的消息密文
@param signature: 安全签名
@param timestamp: 时间戳
@param nonce: 随机字符串
@return: 生成的xml字符串
"""
resp_dict = {
'msg_encrypt' : encrypt,
'msg_signaturet': signature,
'timestamp' : timestamp,
'nonce' : nonce,
}
resp_xml = self.AES_TEXT_RESPONSE_TEMPLATE % resp_dict
return resp_xml
class PKCS7Encoder():
"""提供基于PKCS7算法的加解密接口"""
block_size = 32
def encode(self, text):
""" 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
"""
text_length = len(text)
# 计算需要填充的位数
amount_to_pad = self.block_size - (text_length % self.block_size)
if amount_to_pad == 0:
amount_to_pad = self.block_size
# 获得补位所用的字符
pad = chr(amount_to_pad).encode()
return text + pad * amount_to_pad
def decode(self, decrypted):
"""删除解密后明文的补位字符
@param decrypted: 解密后的明文
@return: 删除补位字符后的明文
"""
pad = ord(decrypted[-1])
if pad<1 or pad >32:
pad = 0
return decrypted[:-pad]
class Prpcrypt(object):
"""提供接收和推送给公众平台消息的加解密接口"""
def __init__(self,key):
#self.key = base64.b64decode(key+"=")
self.key = key
# 设置加解密模式为AES的CBC模式
self.mode = AES.MODE_CBC
def encrypt(self,text,appid):
"""对明文进行加密
@param text: 需要加密的明文
@return: 加密得到的字符串
"""
# 16位随机字符串添加到明文开头
text = self.get_random_str().encode() + struct.pack("I",socket.htonl(len(text.encode()))) + text.encode() + appid.encode()
# 使用自定义的填充方式对明文进行补位填充
pkcs7 = PKCS7Encoder()
text = pkcs7.encode(text)
# 加密
cryptor = AES.new(self.key,self.mode,self.key[:16])
try:
ciphertext = cryptor.encrypt(text)
# 使用BASE64对加密后的字符串进行编码
return ierror.WXBizMsgCrypt_OK, base64.b64encode(ciphertext).decode()
except Exception as e:
#print e
return ierror.WXBizMsgCrypt_EncryptAES_Error,None
def decrypt(self,text,appid):
"""对解密后的明文进行补位删除
@param text: 密文
@return: 删除填充补位后的明文
"""
try:
cryptor = AES.new(self.key,self.mode,self.key[:16])
# 使用BASE64对密文进行解码，然后AES-CBC解密
plain_text = cryptor.decrypt(base64.b64decode(text)).decode()
except Exception as e:
#print e
return ierror.WXBizMsgCrypt_DecryptAES_Error,None
try:
pad = ord(plain_text[-1])
# 去掉补位字符串
#pkcs7 = PKCS7Encoder()
#plain_text = pkcs7.encode(plain_text)
# 去除16位随机字符串
content = plain_text[16:-pad].encode()
xml_len = socket.ntohl(struct.unpack("I",content[ : 4])[0])
xml_content = content[4 : xml_len+4].decode()
from_appid = content[xml_len+4:].decode()
except Exception as e:
#print e
return ierror.WXBizMsgCrypt_IllegalBuffer,None
if from_appid != appid:
return ierror.WXBizMsgCrypt_ValidateAppid_Error,None
return 0,xml_content
def get_random_str(self):
""" 随机生成16位字符串
@return: 16位字符串
"""
rule = string.ascii_letters + string.digits
str = random.sample(rule, 16)
return "".join(str)
class WXBizMsgCrypt(object):
#构造函数
#@param sToken: 公众平台上，开发者设置的Token
# @param sEncodingAESKey: 公众平台上，开发者设置的EncodingAESKey
# @param sAppId: 企业号的AppId
def __init__(self,sToken,sEncodingAESKey,sAppId):
try:
self.key = base64.b64decode(sEncodingAESKey+"=")
assert len(self.key) == 32
except:
throw_exception("[error]: EncodingAESKey unvalid !", FormatException)
#return ierror.WXBizMsgCrypt_IllegalAesKey)
self.token = sToken
self.appid = sAppId
def EncryptMsg(self, sReplyMsg, sNonce, timestamp = None):
#将公众号回复用户的消息加密打包
#@param sReplyMsg: 企业号待回复用户的消息，xml格式的字符串
#@param sTimeStamp: 时间戳，可以自己生成，也可以用URL参数的timestamp,如为None则自动用当前时间
#@param sNonce: 随机串，可以自己生成，也可以用URL参数的nonce
#sEncryptMsg: 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,
#return：成功0，sEncryptMsg,失败返回对应的错误码None
pc = Prpcrypt(self.key)
ret,encrypt = pc.encrypt(sReplyMsg, self.appid)
if ret != 0:
return ret,None
if timestamp is None:
timestamp = str(int(time.time()))
# 生成安全签名
sha1 = SHA1()
ret,signature = sha1.getSHA1(self.token, timestamp, sNonce, encrypt)
if ret != 0:
return ret,None
xmlParse = XMLParse()
return ret,xmlParse.generate(encrypt, signature, timestamp, sNonce)
def DecryptMsg(self, sPostData, sMsgSignature, sTimeStamp, sNonce):
# 检验消息的真实性，并且获取解密后的明文
# @param sMsgSignature: 签名串，对应URL参数的msg_signature
# @param sTimeStamp: 时间戳，对应URL参数的timestamp
# @param sNonce: 随机串，对应URL参数的nonce
# @param sPostData: 密文，对应POST请求的数据
# xml_content: 解密后的原文，当return返回0时有效
# @return: 成功0，失败返回对应的错误码
# 验证安全签名
xmlParse = XMLParse()
ret,encrypt,touser_name = xmlParse.extract(sPostData)
if ret != 0:
return ret, None
sha1 = SHA1()
ret,signature = sha1.getSHA1(self.token, sTimeStamp, sNonce, encrypt)
if ret != 0:
return ret, None
if not signature == sMsgSignature:
return ierror.WXBizMsgCrypt_ValidateSignature_Error, None
pc = Prpcrypt(self.key)
ret,xml_content = pc.decrypt(encrypt,self.appid)
return ret,xml_contentapp.py
python
from flask import Flask,request,make_response
from flask_cors import CORS
from gzh import make_reply
import traceback
app = Flask(__name__)
CORS(app, supports_credentials=True)
@app.after_request
def af_request(resp):
resp = make_response(resp)
resp.headers['Access-Control-Allow-Origin'] = '*'
resp.headers['Access-Control-Allow-Methods'] = 'GET,POST'
resp.headers['Access-Control-Allow-Headers'] = 'x-requested-with,content-type'
return resp
@app.route('/',methods=["GET", "POST"])
def index():
return '505'
@app.route('/wx', methods=["GET", "POST"])
def wx():
if request.method == 'GET':
return request.args.get('echostr')
else:
try:
from_xml = request.stream.read().decode()
result = make_reply(from_xml, request.args.get('msg_signature'), request.args.get('timestamp'), request.args.get('nonce'))
except:
traceback.print_exc()
result = ''
return result
application = appwxgzh.py
python
import xml.etree.ElementTree as xml
import time
from translate import Translator
from loguru import logger
from WXBizMsgCrypt import WXBizMsgCrypt
logger.add("log/wxgzh.log", rotation="500MB")
TOKEN = ''
AES_KEY = ''
APPID = ''
cryptor = WXBizMsgCrypt(TOKEN, AES_KEY, APPID)
def parse_xml(xml_str):
# ToUserName FromUserName CreateTime MsgType Content MsgId
root = xml.fromstring(xml_str)
d = dict()
for item in root:
d[item.tag] = item.text
return d
def get_send_text(ToUserName, FromUserName, Content, MsgType='text'):
CreateTime = int(time.time())
return '''<xml>
<ToUserName><![CDATA[{}]]></ToUserName>
<FromUserName><![CDATA[{}]]></FromUserName>
<CreateTime>{}</CreateTime>
<MsgType><![CDATA[{}]]></MsgType>
<Content><![CDATA[{}]]></Content>
</xml>'''.format(ToUserName, FromUserName, CreateTime, MsgType, Content)
def make_reply(from_xml, msg_sign, timestamp, nonce):
ret, decrypt_xml = cryptor.DecryptMsg(from_xml, msg_sign, timestamp, nonce)
d = parse_xml(decrypt_xml)
ToUserName = d.get('FromUserName')
FromUserName = d.get('ToUserName')
Content_recv = d.get('Content')
logger.info(f"Reply to {ToUserName} {Content_recv}")
try:
translator = Translator(to_lang="zh")
Content = translator.translate(Content_recv)
except:
Content = "fail"
to_xml = get_send_text(ToUserName, FromUserName, Content)
ret, encrypt_xml = cryptor.EncryptMsg(to_xml, str(int(time.time())))
return encrypt_xmlpyproject.toml
toml
[tool.poetry]
name = "python"
version = "0.1.0"
description = ""
authors = ["Your Name <you@example.com>"]
[tool.poetry.dependencies]
python = "^3.8"
pycryptodome = "^3.15.0"
[tool.poetry.dev-dependencies]
[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"