added connect_strongest_wifi

Author: Subhasree Bose

connect_strongest_wifi/README.md

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+# Connect to the Strongest Wi-Fi
+
+## About
+
+The Script can be used to find 3 strongest Wi-Fi's available based on signal strength in Windows OS.
+
+User can then choose one of the networks from the list of 3 Wi-Fi detected and give the password for the same. Once password is provided, the script connects to the Wi-Fi specified.
+
+- Language: Python 3
+- Package used: pywifi
+- OS: Windows
+
+## Pre-requisites
+
+To execute the script, the following are required:
+
+1. Python 3
+2. pip
+
+## Setup instructions
+
+1. Navigate to the directory:
+
+```
+cd connect_strongest_wifi
+```
+
+2. Install the requirements:
+
+```
+pip install -r requirements.txt
+```
+
+## Detailed Explanation of Script
+
+When the script is executed, the main function is being invoked which in turns invoke the get_available_wifi(). This function scan through the available Wi-Fi and returns the entire list of it with SSID and their respective signal, in Windows.
+
+In main, slicing till top 3 SSIDs have been done to take the 3 strongest Wi-Fi signals available. Then, the options are displayed for the User to choose from one of them. Once the User chooses a connection, input for password is prompted.
+
+Next, the chosen SSID and the provided password is passed to the connect_wifi() and connection is established with the Wi-Fi.
+
+Note: If the script fails to connect with Wi-Fi even with correct password, try increasing the Sleep time in connect_wifi().
+
+## Execution
+
+Run the script directly with :
+
+```
+python connect_strongest_wifi.py
+```
+
+When prompted for which Wi-Fi to choose, enter the Option Number with respect to the Wi-Fi name. Enter the password for the same to get connected.

connect_strongest_wifi/connect_strongest_wifi.py

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+import subprocess
+import getpass
+import time
+from pywifi import PyWiFi
+from pywifi import const
+from pywifi import Profile
+
+
+def connect_wifi(ssid, password):
+    # function to connect to Wi-Fi with Password
+
+    wifi = PyWiFi()
+    iface = wifi.interfaces()[0]
+    iface.disconnect()  # disconnects from the current Wi-Fi if any
+    time.sleep(2)
+
+    profile = Profile()  # adding new Profile for given Wi-Fi
+    profile.ssid = ssid
+    profile.auth = const.AUTH_ALG_OPEN
+    profile.akm.append(const.AKM_TYPE_WPA2PSK)
+    profile.cipher = const.CIPHER_TYPE_CCMP
+    profile.key = password
+
+    print("\nConnecting to WiFi....")
+    iface.connect(iface.add_network_profile(profile))
+    time.sleep(5)
+
+    if iface.status() == const.IFACE_CONNECTED:
+        print("\t>> Connected Successfully!")
+    else:
+        print("\t>> Failed to Connect!")
+
+
+def get_available_wifi():
+    # function to get 3 strongest Wi-Fi with SSIDs in Windows
+
+    try:
+
+        cmd = ['netsh', 'wlan', 'show', 'network', 'mode=Bssid']
+        wifidata = subprocess.check_output(cmd).decode(
+            'ascii').replace("\r", "").split("\n\n")
+
+    except subprocess.CalledProcessError:
+        print("\nWhoops! Your Wi-Fi seems to be powered off.")
+        raise SystemExit
+
+    else:
+        networks = []
+        for i in range(1, len(wifidata)-1):  # parsing SSIDs and signals
+            temp = wifidata[i].split("\n")
+            ssid = temp[0].rstrip().split(" : ")[-1]
+            signal = int(temp[5].rstrip().split(" : ")[-1][:-1])
+            networks.append((ssid, signal))
+
+        networks = sorted(networks, reverse=True, key=lambda x: x[1])
+        return (networks)
+
+
+def main():
+    # main function to take 3 strongest Wi-Fis and connect
+
+    networks = get_available_wifi()[:3]  # get top 3 strongest networks
+
+    print(f"\nYour {len(networks)} Strongest Networks are :")
+    for key, network in enumerate(networks):
+        print(f"\t[{key+1}] {network[0]}, Signal: {network[1]}%")
+
+    choice = input("\nPlease enter your choice : \n\t>> ").strip()
+    if not(choice.isdigit() and 1 <= int(choice) <= len(networks)):
+        print("Wrong Choice Entered. Exiting...")
+        return False
+
+    ssid = networks[int(choice)-1][0]
+
+    #  check if the chosen SSID is already connected
+    if ssid in subprocess.check_output("netsh wlan show interfaces").decode():
+        print(f"\nYou are already connected to {ssid} Network. \nExiting...")
+    else:
+        print(f"\nYou Selected: {ssid}")
+        password = getpass.getpass()
+        # connect to the chosen SSID with password
+        connect_wifi(ssid, password)
+
+
+if __name__ == "__main__":
+    main()

connect_strongest_wifi/requirements.txt

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+pywifi==1.1.12