naisys/dist/features/shell/pty.js

NAISYS - Autonomous AI agent runner with built-in context management and cost tracking

import { ptyCmd } from "../../command/commandDefs.js";
import { getPlatformConfig } from "../../services/runtime/shellPlatform.js";
/**
 * Wraps a command with `script -qfc` so the inner program sees a real PTY
 * on stdin/stdout. Lets the LLM drive `sudo`, `ssh`, `passwd`, and other
 * `isatty()`-gated prompts that the pipe-based shell wrapper can't handle.
 *
 * Calls shellWrapper directly (not shellCommand) so it can request the
 * inline-delimiter form — script inherits bash's stdin, so a delimiter on a
 * separate line would be eaten by script and reach the inner PTY as input.
 *
 * Output flow stays normal: when script exits the delimiter fires and the
 * existing wait/kill/input continuation handles any prompt cycle in between.
 */
export function createPtyService(shellWrapper) {
    const platformConfig = getPlatformConfig();
    async function handleCommand(args) {
        const command = args.trim();
        if (!command) {
            return `Usage: ${ptyCmd.name} ${ptyCmd.usage}\n${ptyCmd.description}`;
        }
        if (platformConfig.platform !== "linux") {
            return `${ptyCmd.name} is Linux-only — PowerShell has no equivalent of script(1).`;
        }
        if (shellWrapper.isShellSuspended()) {
            return `Cannot run ${ptyCmd.name} while another shell command is active. Use 'ns-wait', 'ns-kill', or send input to the running command first.`;
        }
        const wrapped = `script -qfc ${shellEscape(command)} /dev/null`;
        return await shellWrapper.executeCommand(wrapped, {
            inlineDelimiter: true,
            secure: true,
        });
    }
    const registrableCommand = {
        command: ptyCmd,
        handleCommand,
    };
    return registrableCommand;
}
/** Single-quote-wrap a string for safe inclusion as one shell argument. */
function shellEscape(s) {
    return `'${s.replace(/'/g, "'\\''")}'`;
}
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