Using Python to prevent wechat messages from being withdrawn

Pig brother 66 2020-11-13 07:36:23
using python prevent wechat messages

WeChat (WeChat) It's Tencent 2011 year 1 month 21 A social software launched on July ,8 Year time wechat to achieve daily life 10 Billion , Daily News 450 Billion . During this period, wechat also launched many functions such as :“ shake ”、“ Drift bottle ”、“ Circle of friends ”、“ The man near the ”、“ Public platform ”、“ Applet ” wait , It covers all aspects of our lives , Wechat is slowly practicing their slogan : WeChat , It's a way of life

One 、 Background introduction

The product update iteration is bound to be accompanied by the function launch and offline , Today we are going to talk about wechat in 2014 A small new feature introduced in : Withdraw message , Use this function to refresh your mind 、 Refreshed , But the person being applied may scratch his ears and face 、 Gnash your teeth to know what you've withdrawn , That's what's called Curiosity Kills cats (Curiosity kills the cat), We'll use it today Python Realize the withdrawal of anti wechat messages , Satisfy your curiosity !
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Two 、 Functional design

We hope that when a friend or group member withdraws a message , The first time I can get the original news 、 The sender information is forwarded to the file assistant ( Of course, you can send the news back to him , ha-ha ), This is convenient for us to check .

Let's demonstrate the function of the implementation .
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3、 ... and 、 Function realization

1. Wechat recall message implementation principle

Let's first understand the principle of wechat message withdrawal :

In fact, the principle of wechat withdrawal message is that when the operator clicks to withdraw , The client will automatically send a system message :“xxx Recalled a message ”, And then the other side app After receiving the message, parse , Replace the original message , Change the display style

Brother pig will show you Normal news and Withdraw message What is the difference between the contents of :
Normal news :Content=' You are sexy! ', Pay attention to MsgId='8784390488772995470'
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Withdraw message :Content It's a bunch of xml Content of format
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Let's format it below

<sysmsg type="revokemsg">
<replacemsg><![CDATA[" Pig brother " Recalled a message ]]></replacemsg>

Analyze the... Withdrawn above Content Field we found <msgid>8784390488772995470</msgid> Of id With the message we sent before id It's consistent , and <replacemsg> This label also confirms my conjecture , It's really replacing the original message with the new one .

2. Find the withdrawn message

According to the grab Normal news and Withdraw message We found the rules : The recall message will contain the previously recalled message msgid, Then we just need to find the news before , and wxpy By default, the module caches the latest 200 Bar message , So all we have to do is go through the historical messages and compare msgid You can find the message that was withdrawn !
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If you have too many wechat messages ,2 The number of messages exceeds in minutes 200, Then you can put max_history Set it up bigger .

3. Forward the withdrawn message

The principle is understood , The news of the withdrawal was also found , Just one last step to forward the message , If you've played before wxpy Certainly , Just one line of code can forward messages :


4. Code

The principle and process are finished , Post the code for you to see , The notes are more detailed , If you don't know something, you can ask me .
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Four 、 functional verification

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5、 ... and 、 summary

Simple implementation of wechat message anti withdrawal function , But it 's very practical , The only drawback of the current project is its poor usability , In short, we haven't deployed the project server yet , Every time you use it, you have to turn on the computer and run it all the time , Brother pig considers to deploy the project on the cloud server or package it into apk, It's very convenient to use , And you can put apk Send it to a friend , Let friends experience this function !

Learn this , Don't be curious about what the other party has withdrawn , Try downloading the project ! After downloading the project, you can run it directly without modifying the code !

Github Project address :
wxpy Official documents :

Like to pay attention to brother pig ~

本文为[Pig brother 66]所创,转载请带上原文链接,感谢

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