dartokloning / PasswordValidation.sh

#!/bin/bash #Validation Function: #- Checks if the password is not empty. #- Ensures the password length is between 5 and 16 characters. #- Ensures the password is not the same as the username. #- Checks if the password contains no spaces. #- Ensures the password contains at least one uppercase letter. #- Ensures the password contains at least one number. #- Ensures the password contains at least one special character. #Input and Validation: #- Prompts the user to enter a username and password. #- Calls the validation function to check the entered password. #- Displays appropriate messages based on the validation result. # Function to validate the password function validate_password() { local password="$1" local username="$2" # Check if password is not empty if [[ -z "$password" ]]; then echo "Password cannot be empty." return 1 fi # Check if password length is between 5 and 16 characters if [[ ${#password} -lt 5 ]] || [[ ${#password} -gt 16 ]]; then echo "Password must be between 5 and 16 characters long." return 1 fi # Check if password is the same as the username if [[ "$password" == "$username" ]]; then echo "Password cannot be the same as the username." return 1 fi # Check if password contains spaces if [[ "$password" =~ \ ]]; then echo "Password cannot contain spaces." return 1 fi # Check if password contains at least one uppercase letter if ! [[ "$password" =~ [A-Z] ]]; then echo "Password must contain at least one uppercase letter." return 1 fi # Check if password contains at least one number if ! [[ "$password" =~ [0-9] ]]; then echo "Password must contain at least one number." return 1 fi # Check if password contains at least one special character if ! [[ "$password" =~ [^a-zA-Z0-9] ]]; then echo "Password must contain at least one special character." return 1 fi return 0 } # Get username and password input from the user read -p "Enter username: " username read -s -p "Enter password: " password echo # Validate the password if validate_password "$password" "$username"; then echo "Password is valid." else echo "Password is invalid. Please try again." fi