app.py

import gradio as gr
import re
from urllib.parse import urlparse

def check_link_safety(url):
    if not url.strip():
        return "❌ Please enter a URL", []
    
    risks = []
    url_lower = url.lower()
    
    # Check for HTTPS
    if not url.startswith('https://'):
        risks.append("⚠️ Not using secure HTTPS")
    
    # Check for IP addresses
    if re.search(r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}', url):
        risks.append("⚠️ Contains IP address instead of domain")
    
    # Check for URL shorteners
    if any(short in url_lower for short in ['bit.ly', 'tinyurl', 'short']):
        risks.append("⚠️ Uses URL shortener")
    
    # Check for suspicious keywords
    if re.search(r'(?:free|win|prize|claim|urgent|verify|account|suspended)', url_lower):
        risks.append("⚠️ Contains suspicious keywords")
    
    if len(risks) == 0:
        return "✅ URL appears safe", []
    else:
        return "⚠️ Potential security risks detected", "\n".join(risks)

def check_password_strength(password):
    if not password:
        return "Please enter a password", "", []
    
    score = 0
    checks = []
    
    if len(password) >= 12:
        score += 1
        checks.append("✅ At least 12 characters")
    else:
        checks.append("❌ At least 12 characters")
    
    if re.search(r'[A-Z]', password):
        score += 1
        checks.append("✅ Contains uppercase letters")
    else:
        checks.append("❌ Contains uppercase letters")
    
    if re.search(r'[a-z]', password):
        score += 1
        checks.append("✅ Contains lowercase letters")
    else:
        checks.append("❌ Contains lowercase letters")
    
    if re.search(r'\d', password):
        score += 1
        checks.append("✅ Contains numbers")
    else:
        checks.append("❌ Contains numbers")
    
    if re.search(r'[!@#$%^&*(),.?":{}|<>]', password):
        score += 1
        checks.append("✅ Contains special characters")
    else:
        checks.append("❌ Contains special characters")
    
    if score <= 2:
        strength = "🔴 Weak Password"
    elif score <= 3:
        strength = "🟡 Medium Password"
    else:
        strength = "🟢 Strong Password"
    
    return strength, f"Score: {score}/5", "\n".join(checks)

def validate_email(email):
    if not email.strip():
        return "Please enter an email address", ""
    
    email_regex = r'^[^\s@]+@[^\s@]+\.[^\s@]+$'
    if not re.match(email_regex, email):
        return "❌ Invalid email format", ""
    
    domain = email.split('@')[1].lower()
    suspicious = ['tempmail', 'throwaway', 'guerrilla', '10minute']
    
    info = f"Domain: {domain}\n"
    
    if any(sus in domain for sus in suspicious):
        return "⚠️ Possible disposable email detected", info
    
    return "✅ Email format is valid", info

# Create Gradio interface
with gr.Blocks(theme=gr.themes.Soft()) as app:
    gr.Markdown("# 🛡️ Cyber Security Toolkit")
    gr.Markdown("Check links, test passwords, and validate emails")
    
    with gr.Tab("Link Safety Checker"):
        with gr.Row():
            link_input = gr.Textbox(label="Enter URL", placeholder="https://example.com")
        link_button = gr.Button("Check Link Safety", variant="primary")
        link_output = gr.Textbox(label="Result")
        link_risks = gr.Textbox(label="Security Risks", lines=5)
        
        link_button.click(check_link_safety, inputs=link_input, outputs=[link_output, link_risks])
    
    with gr.Tab("Password Strength"):
        with gr.Row():
            pwd_input = gr.Textbox(label="Enter Password", type="password")
        pwd_button = gr.Button("Check Password Strength", variant="primary")
        pwd_strength = gr.Textbox(label="Strength")
        pwd_score = gr.Textbox(label="Score")
        pwd_checks = gr.Textbox(label="Requirements", lines=6)
        
        pwd_button.click(check_password_strength, inputs=pwd_input, outputs=[pwd_strength, pwd_score, pwd_checks])
    
    with gr.Tab("Email Validator"):
        with gr.Row():
            email_input = gr.Textbox(label="Enter Email", placeholder="user@example.com")
        email_button = gr.Button("Validate Email", variant="primary")
        email_output = gr.Textbox(label="Result")
        email_info = gr.Textbox(label="Email Info", lines=3)
        
        email_button.click(validate_email, inputs=email_input, outputs=[email_output, email_info])

app.launch()