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function validate_azure_client_secret

Maturity: 42

Validates an Azure client secret by checking for placeholder values, minimum length requirements, and common invalid patterns.

File:
/tf/active/vicechatdev/SPFCsync/validate_config.py
Lines:
45 - 56
Complexity:
simple

Purpose

This function performs validation checks on an Azure AD application client secret to ensure it has been properly configured and is not using default/placeholder values. It helps catch common configuration errors before attempting to authenticate with Azure services. The function returns a tuple indicating validation success/failure along with a descriptive message.

Source Code

def validate_azure_client_secret(client_secret):
    """Validate Azure client secret."""
    if not client_secret or client_secret == "your-azure-app-client-secret":
        return False, "Please update AZURE_CLIENT_SECRET with your Azure AD app's client secret"
    
    if len(client_secret) < 10:
        return False, "Client secret seems too short. Make sure you copied the full secret value"
    
    if "your-" in client_secret or "example" in client_secret.lower():
        return False, "Please replace with your actual client secret value"
    
    return True, "Azure Client Secret appears to be set"

Parameters

Name Type Default Kind
client_secret - - positional_or_keyword

Parameter Details

client_secret: The Azure AD application client secret string to validate. Expected to be a non-empty string containing the actual secret value obtained from Azure portal. Should be at least 10 characters long and not contain placeholder text like 'your-' or 'example'.

Return Value

Returns a tuple of (bool, str). The first element is True if validation passes, False otherwise. The second element is a string message describing the validation result or error. Possible return values: (False, 'Please update AZURE_CLIENT_SECRET...') if empty or default value; (False, 'Client secret seems too short...') if less than 10 characters; (False, 'Please replace with your actual...') if contains placeholder text; (True, 'Azure Client Secret appears to be set') if all validations pass.

Usage Example

# Example 1: Invalid placeholder value
is_valid, message = validate_azure_client_secret('your-azure-app-client-secret')
print(f"Valid: {is_valid}, Message: {message}")
# Output: Valid: False, Message: Please update AZURE_CLIENT_SECRET with your Azure AD app's client secret

# Example 2: Too short
is_valid, message = validate_azure_client_secret('abc123')
print(f"Valid: {is_valid}, Message: {message}")
# Output: Valid: False, Message: Client secret seems too short. Make sure you copied the full secret value

# Example 3: Valid secret
is_valid, message = validate_azure_client_secret('a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6')
print(f"Valid: {is_valid}, Message: {message}")
# Output: Valid: True, Message: Azure Client Secret appears to be set

# Example 4: Using with environment variable
import os
client_secret = os.getenv('AZURE_CLIENT_SECRET', '')
is_valid, message = validate_azure_client_secret(client_secret)
if not is_valid:
    print(f"Configuration error: {message}")
    sys.exit(1)

Best Practices

  • Always validate the client secret before attempting Azure authentication to provide clear error messages
  • Use this function during application startup or configuration loading to fail fast with helpful messages
  • The function checks for common mistakes but does not verify if the secret is actually valid with Azure - actual authentication is still required
  • Consider logging validation failures (without logging the actual secret value) for debugging purposes
  • This validation is a first-line defense; always handle authentication errors gracefully in production code
  • Never log or display the actual client secret value in error messages or logs

Tags

validation azure authentication configuration security client-secret azure-ad credential-validation input-validation

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