Prerequisite:Selenium,Browser Automation Using Selenium

In this article, we are going to see how to share your Web-WhatsApp with anyone over the Internet without Scanning a QR code.

Web-Whatsapp store sessions

Web Whatsapp stores sessions in IndexedDB with the namewawc and syncs those key-value pairs to local storage. IndexedDB stores the data inside the user's browser and allows to create web application that can query from this indexedDB with or without a network connection. 

How to get a session:

We can figure it out by trying the following. We will take help ofchrome dev tool.

Steps:

1. Clear cookies and refresh the page: It will remain login.
2. Clear localStorage and refresh the page: It will restore the local Storage and remain logged in.
3. Clear IndexedDB and refresh the page: It will restore the IndexedDB and remain logged in.
4. Now clear both localStorage and IndexedDB: It will log out.

Steps demonstration:

Extract sessions from IndexedDB:

We can extract sessions from IndexedDB by using the following javascript. 

functiongetResultFromRequest(request){returnnewPromise((resolve,reject)=>{request.onsuccess=function(event){resolve(request.result);};});}asyncfunctiongetDB(){varrequest=window.indexedDB.open("wawc");returnawaitgetResultFromRequest(request);}asyncfunctionreadAllKeyValuePairs(){vardb=awaitgetDB();varobjectStore=db.transaction("user").objectStore("user");varrequest=objectStore.getAll();returnawaitgetResultFromRequest(request);}session=awaitreadAllKeyValuePairs();console.log(session);

We can try to execute the above code in the browser's console or tab where we had opened Web-Whatsapp and we will see the output as follows containing session key-value pairs.
 

Now we get those key-value pairs as text by running the following line of code.

JSON.stringify(session);

Now let's copy that text to a file to save a session and clear both localStorage and IndexedDB to log out. Now we can run the following code to inject a session by assigning the value of the session string we just copied to a file to variable SESSION_STRING. Then refresh the page and we will log in again without scanning the QR code. 

functiongetResultFromRequest(request){returnnewPromise((resolve,reject)=>{request.onsuccess=function(event){resolve(request.result);};})}asyncfunctiongetDB(){varrequest=window.indexedDB.open("wawc");returnawaitgetResultFromRequest(request);}asyncfunctioninjectSession(SESSION_STRING){varsession=JSON.parse(SESSION_STRING);vardb=awaitgetDB();varobjectStore=db.transaction("user","readwrite").objectStore("user");for(varkeyValueofsession){varrequest=objectStore.put(keyValue);awaitgetResultFromRequest(request);}}varSESSION_STRING="";awaitinjectSession(SESSION_STRING);

Automating the process of generating a session file and injecting a session:

We can automate the process of generating a session file that contains our session key-value pairs and also reading session key-value pairs from that generated session file to inject a session into the browser to open web-WhatsApp without scanning QR code

We can automate as follows:

Take the session file path as a command-line argument.

Generating session file:

• Open Chrome browser. 
• Open Web Whatsapp.
• Ask the user to scan the QR code.
• Wait for the QR code to be scanned.
• Execute javascript in the browser and extract the session.
• Save the file with a session text file with the custom file extension ".wa".
• Close the browser.

Opening session file:

• Verify that the session file exists.
• Read the given file into the "session" variable. 
• Open Chrome browser.
• Open Web Whatsapp.
• Wait for Web Whatsapp to be loaded properly.
• Execute javascript in browser to inject session by using variable "session".
• Refresh the page.
• Ask for the user to press enter key to close the browser.

Below is the implementation:

Note:Please downloadchormedrive before running the code.

By using selenium's WebDriverWait, we can wait for some elements to be present on the browser as following:

def_wait_for_presence_of_an_element(browser,selector):element=Nonetry:element=WebDriverWait(browser,DEFAULT_WAIT).until(EC.presence_of_element_located(selector))except:passfinally:returnelement

Generating session file:

defsessionGenerator(sessionFilePath):# 1.1 Open Chrome browserbrowser=webdriver.Chrome()# 1.2 Open Web Whatsappbrowser.get("https://web.whatsapp.com/")# 1.3 Ask user to scan QR codeprint("Waiting for QR code scan...")# 1.4 Wait for QR code to be scanned_wait_for_presence_of_an_element(browser,MAIN_SEARCH_BAR__SEARCH_ICON)# 1.5 Execute javascript in browser and# extract the session textsession=browser.execute_script(EXTRACT_SESSION)# 1.6 Save file with session text file with# custom file extension ".wa"withopen(sessionFilePath,"w",encoding="utf-8")assessionFile:sessionFile.write(str(session))print("Your session file is saved to: "+sessionFilePath)# 1.7 Close the browserbrowser.close()

Use the above methods for Generating session file:

fromsessionimport*importsys# Take session file path as command line# argument and passed to following methodsessionFilePath=sys.argv[1]sessionGenerator(sessionFilePath)

Opening session file:

defsessionOpener(sessionFilePath):# 2.1 Verify that session file is existifsessionFilePath=="":raiseIOError('"'+sessionFilePath+'" is not exist.')# 2.2 Read the given file into "session" variablewithopen(sessionFilePath,"r",encoding="utf-8")assessionFile:session=sessionFile.read()# 2.3 Open Chrome browserbrowser=webdriver.Chrome()# 2.4 Open Web Whatsappbrowser.get("https://web.whatsapp.com/")# 2.5 Wait for Web Whatsapp to be loaded properly_wait_for_presence_of_an_element(browser,QR_CODE)# 2.6 Execute javascript in browser to inject# session by using variable "session"print("Injecting session...")browser.execute_script(INJECT_SESSION,session)# 2.7 Refresh the pagebrowser.refresh()# 2.8 Ask for user to enter any key to close browserinput("Press enter to close browser.")

Use the above methods for Opening session file:

fromsessionimport*importsys# Take session file path as command line# argument and passed to following methodsessionFilePath=sys.argv[1]sessionOpener(sessionFilePath)

We can generate a session file by using the following command:

For Generating session file:

python session_generator.py session.wa

After generating the session file then share it with someone and put that session file in the same folder where session_opener.py is located and run the following command to open the Web Whatsapp without scanning the QR code

For Opening session file:

python session_opener.py session.wa

OR open PowerShell normally without going to the folder and give absolute paths as following

For Generating session file:

python E:\share-web-whatsapp\session_generator.py E:\share-web-whatsapp\session.wa

For Opening session file:

python E:\share-web-whatsapp\session_opener.py E:\share-web-whatsapp\session.wa

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