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dotfiles/pi/files/agent/extensions/permission-gate.ts
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2026-03-12 12:13:39 +00:00

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TypeScript

/**
* Permission Gate Extension
*
* Prompts for confirmation before running potentially dangerous bash commands.
* Patterns checked: rm -rf, sudo, chmod/chown 777
*/
import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
export default function(pi: ExtensionAPI) {
// const dangerousPatterns = [/\brm\s+(-rf?|--recursive)/i, /\bsudo\b/i, /\b(chmod|chown)\b.*777/i];
const dangerousPatterns = [/\bsudo\b/i, /\b(chmod|chown)\b.*777/i];
pi.on("tool_call", async (event, ctx) => {
if (event.toolName !== "bash") return undefined;
const command = event.input.command as string;
const isDangerous = dangerousPatterns.some((p) => p.test(command));
if (isDangerous) {
// Emit event for sound extensions (play sound regardless of UI mode)
pi.events.emit("peon:input_required", { source: "permission-gate", action: "dangerous-command", command });
if (!ctx.hasUI) {
// In non-interactive mode, block by default
return { block: true, reason: "Dangerous command blocked (no UI for confirmation)" };
}
const choice = await ctx.ui.select(`⚠️ Dangerous command:\n\n ${command}\n\nAllow?`, ["Yes", "No"]);
if (choice !== "Yes") {
return { block: true, reason: "Blocked by user" };
}
}
return undefined;
});
}