mirror of https://github.com/nodejs/node.git
85 lines
2.9 KiB
JavaScript
85 lines
2.9 KiB
JavaScript
'use strict';
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const common = require('../common');
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const fs = require('fs');
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const path = require('path');
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if (process.argv[2] === 'wasi-child') {
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common.expectWarning('ExperimentalWarning',
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'WASI is an experimental feature and might change at any time');
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const { WASI } = require('wasi');
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const wasmDir = path.join(__dirname, 'wasm');
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const wasi = new WASI({
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version: 'preview1',
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args: [],
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env: process.env,
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preopens: {
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'/sandbox': process.argv[4],
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'/tmp': process.argv[5],
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},
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});
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const importObject = { wasi_snapshot_preview1: wasi.wasiImport };
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const modulePath = path.join(wasmDir, `${process.argv[3]}.wasm`);
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const buffer = fs.readFileSync(modulePath);
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(async () => {
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const { instance } = await WebAssembly.instantiate(buffer, importObject);
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wasi.start(instance);
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})().then(common.mustCall());
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} else {
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if (!common.canCreateSymLink()) {
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common.skip('insufficient privileges');
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}
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const assert = require('assert');
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const cp = require('child_process');
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const tmpdir = require('../common/tmpdir');
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// Setup the sandbox environment.
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tmpdir.refresh();
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const sandbox = tmpdir.resolve('sandbox');
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const sandboxedFile = path.join(sandbox, 'input.txt');
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const externalFile = tmpdir.resolve('outside.txt');
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const sandboxedDir = path.join(sandbox, 'subdir');
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const sandboxedSymlink = path.join(sandboxedDir, 'input_link.txt');
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const escapingSymlink = path.join(sandboxedDir, 'outside.txt');
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const loopSymlink1 = path.join(sandboxedDir, 'loop1');
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const loopSymlink2 = path.join(sandboxedDir, 'loop2');
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const sandboxedTmp = tmpdir.resolve('tmp');
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fs.mkdirSync(sandbox);
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fs.mkdirSync(sandboxedDir);
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fs.mkdirSync(sandboxedTmp);
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fs.writeFileSync(sandboxedFile, 'hello from input.txt', 'utf8');
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fs.writeFileSync(externalFile, 'this should be inaccessible', 'utf8');
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fs.symlinkSync(path.join('.', 'input.txt'), sandboxedSymlink, 'file');
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fs.symlinkSync(path.join('..', 'outside.txt'), escapingSymlink, 'file');
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fs.symlinkSync(path.join('subdir', 'loop2'),
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loopSymlink1, 'file');
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fs.symlinkSync(path.join('subdir', 'loop1'),
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loopSymlink2, 'file');
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function runWASI(options) {
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console.log('executing', options.test);
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const opts = { env: { ...process.env, NODE_DEBUG_NATIVE: 'wasi' } };
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const child = cp.spawnSync(process.execPath, [
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__filename,
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'wasi-child',
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options.test,
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sandbox,
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sandboxedTmp,
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], opts);
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console.log(child.stderr.toString());
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assert.strictEqual(child.status, 0);
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assert.strictEqual(child.signal, null);
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assert.strictEqual(child.stdout.toString(), options.stdout || '');
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}
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runWASI({ test: 'create_symlink', stdout: 'hello from input.txt' });
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runWASI({ test: 'follow_symlink', stdout: 'hello from input.txt' });
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runWASI({ test: 'link' });
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runWASI({ test: 'symlink_escape' });
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runWASI({ test: 'symlink_loop' });
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}
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