147 lines
3.8 KiB
Rego
147 lines
3.8 KiB
Rego
# METADATA
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# scope: package
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# title: Block Broad Exception Handler
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# description: Blocks bare Exception handlers that only log
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# custom:
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# routing:
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# required_events: ["PreToolUse"]
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# required_tools: ["ApplyPatch", "Edit", "MultiEdit", "NotebookEdit", "Patch", "Write"]
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package cupcake.policies.opencode.block_broad_exception_handler
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import rego.v1
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tool_name := input.tool_name
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tool_input := input.tool_input
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resolved_file_path := input.resolved_file_path if {
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input.resolved_file_path != null
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} else := tool_input.file_path if {
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tool_input.file_path != null
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} else := tool_input.filePath if {
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tool_input.filePath != null
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} else := tool_input.path if {
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tool_input.path != null
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} else := tool_input.notebook_path if {
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tool_input.notebook_path != null
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} else := tool_input.notebookPath if {
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tool_input.notebookPath != null
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} else := ""
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new_content := tool_input.new_string if {
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tool_input.new_string != null
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} else := tool_input.newText if {
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tool_input.newText != null
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} else := tool_input.new_text if {
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tool_input.new_text != null
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} else := tool_input.content if {
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tool_input.content != null
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} else := ""
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old_content := tool_input.old_string if {
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tool_input.old_string != null
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} else := tool_input.oldText if {
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tool_input.oldText != null
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} else := tool_input.old_text if {
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tool_input.old_text != null
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} else := tool_input.previousContent if {
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tool_input.previousContent != null
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} else := ""
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patch_content := tool_input.patch if {
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tool_input.patch != null
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} else := tool_input.patchText if {
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tool_input.patchText != null
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} else := tool_input.patch_text if {
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tool_input.patch_text != null
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} else := ""
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edit_path(edit) := path if {
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edit.resolved_file_path != null
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path := edit.resolved_file_path
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} else := path if {
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edit.file_path != null
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path := edit.file_path
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} else := path if {
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edit.filePath != null
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path := edit.filePath
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} else := path if {
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edit.path != null
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path := edit.path
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} else := ""
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edit_new_content(edit) := content if {
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edit.new_string != null
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content := edit.new_string
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} else := content if {
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edit.newText != null
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content := edit.newText
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} else := content if {
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edit.new_text != null
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content := edit.new_text
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} else := content if {
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edit.content != null
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content := edit.content
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} else := ""
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edit_old_content(edit) := content if {
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edit.old_string != null
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content := edit.old_string
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} else := content if {
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edit.oldText != null
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content := edit.oldText
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} else := content if {
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edit.old_text != null
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content := edit.old_text
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} else := ""
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handler_pattern := `except\s+Exception\s*(?:as\s+\w+)?:\s*\n\s+(?:logger\.|logging\.)`
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# Block Write/Edit operations that introduce broad exception handlers
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deny contains decision if {
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input.hook_event_name == "PreToolUse"
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tool_name in {"Write", "Edit", "NotebookEdit"}
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content := new_content
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content != null
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regex.match(handler_pattern, content)
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decision := {
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"rule_id": "PY-EXC-001",
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"reason": "Broad Exception handlers that only log are prohibited.",
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"severity": "HIGH"
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}
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}
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deny contains decision if {
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input.hook_event_name == "PreToolUse"
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tool_name == "MultiEdit"
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some edit in tool_input.edits
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content := edit_new_content(edit)
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content != null
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regex.match(handler_pattern, content)
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decision := {
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"rule_id": "PY-EXC-001",
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"reason": "Broad Exception handlers that only log are prohibited.",
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"severity": "HIGH"
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}
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}
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deny contains decision if {
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input.hook_event_name == "PreToolUse"
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tool_name in {"Patch", "ApplyPatch"}
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patch := patch_content
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patch != null
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regex.match(handler_pattern, patch)
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decision := {
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"rule_id": "PY-EXC-001",
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"reason": "Broad Exception handlers that only log are prohibited.",
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"severity": "HIGH"
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}
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}
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