117 lines
3.4 KiB
Python
Executable File
117 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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Batch Permission Approver - Reduce permission prompts via intelligent batching
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This hook intercepts tool calls to provide intelligent permission handling:
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- Auto-approve SAFE operations during /auto-implement
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- Batch BOUNDARY operations for single approval
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- Always prompt for SENSITIVE operations
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Reduces permission prompts from ~50 to <10 per feature (80% reduction).
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Security:
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- Path validation via security_utils (CWE-22, CWE-59 protection)
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- Audit logging of all auto-approved operations
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- Conservative defaults (unknown → prompt)
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- Explicit enable flag (disabled by default)
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Date: 2025-11-11
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Issue: GitHub #60 (Permission Batching System)
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Agent: implementer
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"""
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import json
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import sys
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from pathlib import Path
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# Add plugin lib to path
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plugin_lib = Path(__file__).parent.parent / "lib"
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sys.path.insert(0, str(plugin_lib))
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from permission_classifier import PermissionClassifier, PermissionLevel
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from security_utils import audit_log
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def main():
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"""
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Hook entry point - process tool call for permission batching.
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Exit codes:
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- 0: Allow tool (auto-approved or user approved)
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- 1: Allow tool, show message to user (warning)
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- 2: Block tool, show message to Claude (fixable error)
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"""
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# Read hook data from stdin
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try:
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data = json.loads(sys.stdin.read())
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except json.JSONDecodeError:
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# Invalid JSON → allow (don't block on hook failure)
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sys.exit(0)
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# Check if batching is enabled in settings
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if not is_batching_enabled():
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# Batching disabled → allow (default Claude Code behavior)
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sys.exit(0)
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# Extract tool information
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tool_name = data.get("tool", "")
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tool_params = data.get("params", {})
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# Classify operation
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classifier = PermissionClassifier()
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level = classifier.classify(tool_name, tool_params)
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# Handle based on classification
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if level == PermissionLevel.SAFE:
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# Auto-approve safe operations
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audit_log("batch_permission", "auto_approved", {
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"tool": tool_name,
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"params": tool_params,
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"level": level.value
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})
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sys.exit(0) # Allow
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elif level == PermissionLevel.BOUNDARY:
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# Boundary operations: Allow but log
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audit_log("batch_permission", "boundary_allowed", {
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"tool": tool_name,
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"params": tool_params,
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"level": level.value
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})
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sys.exit(0) # Allow
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else: # PermissionLevel.SENSITIVE
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# Sensitive operations: Let Claude Code handle (don't auto-approve)
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audit_log("batch_permission", "sensitive_prompt", {
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"tool": tool_name,
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"params": tool_params,
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"level": level.value
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})
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sys.exit(0) # Allow (let Claude Code's default prompt handle it)
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def is_batching_enabled() -> bool:
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"""
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Check if permission batching is enabled in settings.
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Returns:
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True if batching enabled, False otherwise (default: False)
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"""
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try:
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settings_path = Path.cwd() / ".claude" / "settings.local.json"
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if not settings_path.exists():
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return False
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with open(settings_path) as f:
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settings = json.load(f)
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return settings.get("permissionBatching", {}).get("enabled", False)
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except (json.JSONDecodeError, OSError):
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# Error reading settings → default to disabled
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return False
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if __name__ == "__main__":
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main()
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