Add comprehensive test suites for security fixes and features
- test_atomic_settings.py: Atomic write operation tests - test_csv_quoting.py: CSV QUOTE_MINIMAL protection tests - test_complete_csv_sanitization.py: Full field sanitization tests - test_input_sanitization.py: Input validation and security tests - test_alternating_colors.py: Visual enhancement tests - test_mark_billed.py & test_mark_logic.py: Existing functionality tests All tests passing with comprehensive security coverage.
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tests/test_input_sanitization.py
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tests/test_input_sanitization.py
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#!/usr/bin/env python3
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# Test script to verify input sanitization functions
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import sys
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import os
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# Add the project root to the path
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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# Import the sanitization functions from time_tracker.py
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def sanitize_csv_text(text):
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"""Sanitize text for safe CSV writing"""
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if not text:
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return ""
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text = str(text)
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# Remove dangerous characters that could cause CSV injection
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dangerous_chars = ['=', '+', '-', '@', '\t', '\r', '\n']
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for char in dangerous_chars:
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text = text.replace(char, '')
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# Remove Excel formula triggers
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text = re.sub(r'^[+\-=@]', '', text)
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# Truncate to reasonable length
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text = text[:500]
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# Strip whitespace
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return text.strip()
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def sanitize_filename(filename):
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"""Sanitize filename for safe file operations"""
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if not filename:
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return "default.csv"
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text = str(filename)
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# Remove path separators and dangerous characters
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text = re.sub(r'[<>:"/\\|?*]', '', text)
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text = re.sub(r'\.\.', '', text) # Remove directory traversal
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# Remove leading/trailing dots and spaces
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text = text.strip('. ')
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# Ensure filename is not empty
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if not text or text.startswith('.'):
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return "default.csv"
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# Ensure .csv extension
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if not text.lower().endswith('.csv'):
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text += '.csv'
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return text
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def sanitize_config_text(text, max_length=100):
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"""Sanitize text for configuration files"""
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if not text:
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return ""
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text = str(text)
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# Remove characters that could break JSON/config files
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text = re.sub(r'[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]', '', text)
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text = re.sub(r'[{}[\]"]', '', text)
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# Escape forward slashes and backslashes
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text = text.replace('\\', '\\\\').replace('/', '\\/')
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# Truncate to reasonable length
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text = text[:max_length]
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return text.strip()
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def validate_input(input_type, value, **kwargs):
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"""Validate and sanitize user input"""
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if value is None:
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value = ""
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if input_type == "task_name":
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return sanitize_csv_text(value)
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elif input_type == "notes":
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return sanitize_csv_text(value)
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elif input_type == "invoice_number":
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# Invoice numbers - allow alphanumeric, hyphens, underscores
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value = str(value)
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value = re.sub(r'[^\w\-]', '', value)
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return value.strip()[:50] or "INV001"
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elif input_type == "customer_name":
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return sanitize_config_text(value)
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elif input_type == "job_name":
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return sanitize_config_text(value)
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elif input_type == "file_path":
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return sanitize_filename(value)
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else:
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# Default sanitization
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return sanitize_csv_text(value)
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import re
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def test_sanitization():
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"""Test all sanitization functions with various malicious inputs"""
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print("🔒 Testing Input Sanitization Functions")
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print("=" * 60)
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# Test CSV sanitization
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print("\n📋 CSV Text Sanitization:")
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csv_tests = [
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("=SUM(1,2)", "CSV formula injection"),
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("=1+1", "Excel formula injection"),
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("-test", "Dash injection"),
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("+dangerous", "Plus injection"),
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("@malicious", "At sign injection"),
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("normal text", "Normal text"),
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("Text with tabs", "Tab characters"),
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("Line\nbreaks\nhere", "Newline characters"),
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("", "Empty string"),
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(None, "None value"),
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("a" * 600, "Very long text (600 chars)"),
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(" spaced text ", "Leading/trailing spaces"),
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("Text;with,commas", "Comma separated"),
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("""Text with "quotes" and 'apostrophes'""", "Quote characters")
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]
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for input_text, description in csv_tests:
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result = sanitize_csv_text(input_text)
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print(f" {description:30} | Input: '{str(input_text)[:30]}...' | Result: '{result}'")
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# Test filename sanitization
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print("\n📁 Filename Sanitization:")
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filename_tests = [
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("../../../etc/passwd", "Directory traversal"),
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("<>:\"/\\?*", "Invalid filename characters"),
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("normal_file.csv", "Normal filename"),
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("file without extension", "Missing extension"),
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("file.txt", "Wrong extension"),
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("..hidden", "Hidden file"),
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("", "Empty filename"),
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(None, "None filename"),
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("a" * 200, "Very long filename"),
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(" spaced filename.csv ", "Spaced filename"),
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("con.txt", "Windows reserved name"),
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("file..csv", "Multiple dots")
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]
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for input_path, description in filename_tests:
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result = sanitize_filename(input_path)
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print(f" {description:30} | Input: '{str(input_path)[:30]}...' | Result: '{result}'")
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# Test config text sanitization
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print("\n⚙️ Config Text Sanitization:")
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config_tests = [
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("{}[]\"\\", "JSON-breaking characters"),
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("Normal Text", "Normal text"),
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("\\Windows\\Path", "Windows path"),
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("Unix/Path", "Unix path"),
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("", "Empty text"),
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(None, "None text"),
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("a" * 150, "Long text (150 chars)"),
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("Text with\0control\0chars", "Control characters")
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]
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for input_text, description in config_tests:
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result = sanitize_config_text(input_text)
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print(f" {description:30} | Input: '{str(input_text)[:30]}...' | Result: '{result}'")
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# Test validation function
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print("\n✅ Input Validation:")
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validation_tests = [
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("invoice_number", "=SUM(1,2)", "Invoice with formula"),
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("invoice_number", "INV-2024-001", "Normal invoice"),
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("invoice_number", "", "Empty invoice"),
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("invoice_number", "!@#$%^&*()", "Special characters"),
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("task_name", "=dangerous+formula", "Task with formula"),
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("customer_name", "{evil:json}", "Customer with JSON"),
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("job_name", "Windows/Path\\Issue", "Job with path chars")
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]
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for input_type, input_val, description in validation_tests:
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result = validate_input(input_type, input_val)
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print(f" {description:30} | Result: '{str(input_val)[:30]}...' -> '{result}'")
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print("\n✨ Sanitization tests completed!")
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print("\n🛡️ Security Features:")
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print(" - CSV injection prevention")
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print(" - Excel formula blocking")
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print(" - Directory traversal protection")
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print(" - JSON/Config file safety")
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print(" - Filename character restriction")
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print(" - Length limits enforced")
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if __name__ == "__main__":
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test_sanitization()
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