Patched main.py

Author: patched.codes[bot]

main.py

@@ -1,26 +1,112 @@
 import requests
 import subprocess
+import re
+import os
+from typing import Tuple
+from urllib.parse import urlparse
 
-def func_calls():
-    formats.get_format()
-    algorithms.HMACAlgorithm.prepare_key()
-    cli.VerifyOperation.perform_operation()
-    sessions.SessionRedirectMixin.resolve_redirects()
+def validate_host(host: str) -> Tuple[bool, str]:
+    """
+    Validate if the input is a valid hostname or IP address.
+    
+    Args:
+        host: The hostname or IP address to validate
+        
+    Returns:
+        Tuple of (is_valid: bool, error_message: str)
+    """
+    # Remove any whitespace
+    host = host.strip()
+    
+    # Check for empty input
+    if not host:
+        return False, "Host cannot be empty"
+        
+    # Check input length
+    if len(host) > 255:
+        return False, "Host name too long"
+    
+    # Basic hostname/IP validation regex
+    # Matches hostnames and IPv4 addresses
+    pattern = r'^[a-zA-Z0-9]([a-zA-Z0-9\-\.]{0,253}[a-zA-Z0-9])?$'
+    if not re.match(pattern, host):
+        return False, "Invalid hostname format"
+    
+    return True, ""
+
+def safe_ping(host: str) -> Tuple[bool, str]:
+    """
+    Safely execute a ping command with proper input validation and error handling.
+    
+    Args:
+        host: The hostname or IP to ping
+        
+    Returns:
+        Tuple of (success: bool, message: str)
+    """
+    # Validate input
+    is_valid, error = validate_host(host)
+    if not is_valid:
+        return False, f"Invalid input: {error}"
+    
+    try:
+        # Use subprocess.run with a list of arguments and shell=False for security
+        result = subprocess.run(
+            ['ping', '-c', '4', host],  # Fixed number of pings for safety
+            shell=False,
+            capture_output=True,
+            text=True,
+            timeout=10  # Timeout after 10 seconds
+        )
+        
+        if result.returncode == 0:
+            return True, result.stdout
+        else:
+            return False, f"Ping failed: {result.stderr}"
+            
+    except subprocess.TimeoutExpired:
+        return False, "Ping timed out after 10 seconds"
+    except subprocess.SubprocessError as e:
+        return False, f"Error executing ping: {str(e)}"
+    except Exception as e:
+        return False, f"Unexpected error: {str(e)}"
+
+def get_proxy_config() -> dict:
+    """
+    Get proxy configuration from environment variables.
+    Returns an empty dict if no proxy is configured.
+    """
+    proxy_config = {}
+    
+    # Read proxy settings from environment variables
+    http_proxy = os.getenv('HTTP_PROXY')
+    https_proxy = os.getenv('HTTPS_PROXY')
+    
+    if http_proxy:
+        proxy_config['http'] = http_proxy
+    if https_proxy:
+        proxy_config['https'] = https_proxy
+        
+    return proxy_config
 
 if __name__ == '__main__':
     session = requests.Session()
-    proxies = {
-        'http': 'http://test:pass@localhost:8080',
-        'https': 'http://test:pass@localhost:8090',
-    }
+    
+    # Get proxy configuration from environment instead of hardcoding
+    proxies = get_proxy_config()
+    
     url = 'http://example.com'  # Replace with a valid URL
     req = requests.Request('GET', url)
     prep = req.prepare()
-    session.rebuild_proxies(prep, proxies)
-
-    # Introduce a command injection vulnerability
-    user_input = input("Enter a command to execute: ")
-    command = "ping " + user_input
-    subprocess.call(command, shell=True)
+    if proxies:
+        session.rebuild_proxies(prep, proxies)
 
-    print("Command executed!")
+    # Secure implementation of ping command
+    user_input = input("Enter a hostname or IP to ping: ")
+    success, message = safe_ping(user_input)
+    
+    if success:
+        print("Ping successful!")
+        print(message)
+    else:
+        print(f"Error: {message}")