Fix Plan

To address the issue of false positives in the IsDenied function, we need to modify the pattern matching logic to consider the context of the matched string.

Step-by-Step Solution

1. Modify the IsDenied function in x/agent/approval.go to use a more sophisticated pattern matching approach, such as using regular expressions with word boundaries.
2. Update the denyPatterns to include word boundaries, for example, change "su" to "\bsu\b" to match only whole words.
3. Implement a whitelist for common false positives, such as variable names or function names that contain the denied patterns.

Example Code

import (
	regexp
)

// ...

func IsDenied(code string, denyPatterns []string) bool {
	for _, pattern := range denyPatterns {
		// Use word boundaries to match whole words only
		re := regexp.MustCompile(`\b` + regexp.QuoteMeta(pattern) + `\b`)
		if re.FindString(code) != "" {
			return true
		}
	}
	return false
}

// ...

denyPatterns := []string{"\bsu\b", "\bsudo\b"} // updated patterns with word boundaries

Verification

To verify the fix, test the IsDenied function with various code snippets that previously triggered false positives, and ensure that only legitimate matches are blocked.

Extra Tips

• Consider using a more advanced pattern matching library or framework to improve the accuracy of the IsDenied function.
• Regularly review and update the denyPatterns list to ensure it remains effective and minimizes false positives.