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'use strict';
const common = require('../../common');
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const blockedFile = process.env.BLOCKEDFILE;
const blockedFolder = process.env.BLOCKEDFOLDER;
const allowedFolder = process.env.ALLOWEDFOLDER;
const regularFile = __filename;
// fs.readFile
{
assert.throws(() => {
fs.readFile(blockedFile, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
assert.throws(() => {
fs.readFile(path.join(blockedFolder, 'anyfile'), () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(path.join(blockedFolder, 'anyfile')),
}));
// doesNotThrow
fs.readFile(regularFile, () => {});
}
// fs.createReadStream
{
assert.rejects(() => {
return new Promise((_resolve, reject) => {
const stream = fs.createReadStream(blockedFile);
stream.on('error', reject);
});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
})).then(common.mustCall());
assert.rejects(() => {
return new Promise((_resolve, reject) => {
const stream = fs.createReadStream(blockedFile);
stream.on('error', reject);
});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
})).then(common.mustCall());
}
// fs.stat
{
assert.throws(() => {
fs.stat(blockedFile, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
assert.throws(() => {
fs.stat(path.join(blockedFolder, 'anyfile'), () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(path.join(blockedFolder, 'anyfile')),
}));
// doesNotThrow
fs.stat(regularFile, (err) => {
assert.ifError(err);
});
}
// fs.access
{
assert.throws(() => {
fs.access(blockedFile, fs.constants.R_OK, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
assert.throws(() => {
fs.access(path.join(blockedFolder, 'anyfile'), fs.constants.R_OK, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(path.join(blockedFolder, 'anyfile')),
}));
// doesNotThrow
fs.access(regularFile, fs.constants.R_OK, (err) => {
assert.ifError(err);
});
}
// fs.copyFile
{
assert.throws(() => {
fs.copyFile(blockedFile, path.join(blockedFolder, 'any-other-file'), () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
assert.throws(() => {
fs.copyFile(blockedFile, path.join(__dirname, 'any-other-file'), () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
}
// fs.cp
{
assert.throws(() => {
fs.cpSync(blockedFile, path.join(blockedFolder, 'any-other-file'));
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
// cpSync calls statSync before reading blockedFile
resource: path.toNamespacedPath(blockedFolder),
}));
assert.throws(() => {
fs.cpSync(blockedFile, path.join(__dirname, 'any-other-file'));
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(__dirname),
}));
}
// fs.open
{
assert.throws(() => {
fs.open(blockedFile, 'r', () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
assert.throws(() => {
fs.open(path.join(blockedFolder, 'anyfile'), 'r', () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(path.join(blockedFolder, 'anyfile')),
}));
// doesNotThrow
fs.open(regularFile, 'r', (err) => {
assert.ifError(err);
});
// Extra flags should not enable trivially bypassing all restrictions.
// See https://github.com/nodejs/node/issues/47090.
assert.throws(() => {
fs.openSync(blockedFile, fs.constants.O_RDONLY | fs.constants.O_NOCTTY);
}, {
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
});
assert.throws(() => {
fs.open(blockedFile, fs.constants.O_RDWR | 0x10000000, common.mustNotCall());
}, {
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
});
}
// fs.opendir
{
assert.throws(() => {
fs.opendir(blockedFolder, (err) => {
assert.ifError(err);
});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFolder),
}));
// doesNotThrow
fs.opendir(allowedFolder, (err, dir) => {
assert.ifError(err);
dir.closeSync();
});
}
// fs.readdir
{
assert.throws(() => {
fs.readdir(blockedFolder, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFolder),
}));
// doesNotThrow
fs.readdir(allowedFolder, (err) => {
assert.ifError(err);
});
}
// fs.watch
{
assert.throws(() => {
fs.watch(blockedFile, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
// doesNotThrow
fs.readdir(allowedFolder, (err) => {
assert.ifError(err);
});
}
// fs.watchFile
{
assert.throws(() => {
fs.watchFile(blockedFile, common.mustNotCall());
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
}
// fs.rename
{
assert.throws(() => {
fs.rename(blockedFile, 'newfile', () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
}
// fs.openAsBlob
{
assert.throws(() => {
fs.openAsBlob(blockedFile, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
}
// fs.exists
{
// It will return false (without performing IO) when permissions is not met
fs.exists(blockedFile, (exists) => {
assert.equal(exists, false);
});
}
// fs.statfs
{
assert.throws(() => {
fs.statfs(blockedFile, () => {});
}, common.expectsError({
code: 'ERR_ACCESS_DENIED',
permission: 'FileSystemRead',
resource: path.toNamespacedPath(blockedFile),
}));
}