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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { SandboxConfig } from '@gemini-cli/core';
import commandExists from 'command-exists';
import * as os from 'node:os';
import { getPackageJson } from '../utils/package.js';
import { Settings } from './settings.js';
// This is a stripped-down version of the CliArgs interface from config.ts
// to avoid circular dependencies.
interface SandboxCliArgs {
sandbox?: boolean | string;
'sandbox-image'?: string;
}
const VALID_SANDBOX_COMMANDS: ReadonlyArray<SandboxConfig['command']> = [
'docker',
'podman',
'sandbox-exec',
];
function isSandboxCommand(value: string): value is SandboxConfig['command'] {
return (VALID_SANDBOX_COMMANDS as readonly string[]).includes(value);
}
function getSandboxCommand(
sandbox?: boolean | string,
): SandboxConfig['command'] | '' {
// note environment variable takes precedence over argument (from command line or settings)
sandbox = process.env.GEMINI_SANDBOX?.toLowerCase().trim() ?? sandbox;
if (sandbox === '1' || sandbox === 'true') sandbox = true;
else if (sandbox === '0' || sandbox === 'false') sandbox = false;
if (sandbox === false) {
return '';
}
if (typeof sandbox === 'string' && sandbox !== '') {
if (!isSandboxCommand(sandbox)) {
console.error(
`ERROR: invalid sandbox command '${sandbox}'. Must be one of ${VALID_SANDBOX_COMMANDS.join(
', ',
)}`,
);
process.exit(1);
}
// confirm that specfied command exists
if (commandExists.sync(sandbox)) {
return sandbox;
}
console.error(
`ERROR: missing sandbox command '${sandbox}' (from GEMINI_SANDBOX)`,
);
process.exit(1);
}
// look for seatbelt, docker, or podman, in that order
// for container-based sandboxing, require sandbox to be enabled explicitly
if (os.platform() === 'darwin' && commandExists.sync('sandbox-exec')) {
return 'sandbox-exec';
} else if (commandExists.sync('docker') && sandbox === true) {
return 'docker';
} else if (commandExists.sync('podman') && sandbox === true) {
return 'podman';
}
// throw an error if user requested sandbox but no command was found
if (sandbox === true) {
console.error(
'ERROR: GEMINI_SANDBOX is true but failed to determine command for sandbox; ' +
'install docker or podman or specify command in GEMINI_SANDBOX',
);
process.exit(1);
}
return '';
}
export async function loadSandboxConfig(
settings: Settings,
argv: SandboxCliArgs,
): Promise<SandboxConfig | undefined> {
const sandboxOption = argv.sandbox ?? settings.sandbox;
const sandboxCommand = getSandboxCommand(sandboxOption);
if (!sandboxCommand) {
return undefined;
}
const packageJson = await getPackageJson();
return {
command: sandboxCommand,
image:
argv['sandbox-image'] ??
process.env.GEMINI_SANDBOX_IMAGE ??
packageJson?.config?.sandboxImageUri ??
'gemini-cli-sandbox',
};
}
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