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'use strict';
var common = require('../common');
var assert = require('assert');
var fs = require('fs');
var path = require('path');
var exec = require('child_process').exec;
var async_completed = 0, async_expected = 0, unlink = [];
var skipSymlinks = false;
common.refreshTmpDir();
var root = '/';
if (common.isWindows) {
// something like "C:\\"
root = process.cwd().substr(0, 3);
// On Windows, creating symlinks requires admin privileges.
// We'll only try to run symlink test if we have enough privileges.
try {
exec('whoami /priv', function(err, o) {
if (err || o.indexOf('SeCreateSymbolicLinkPrivilege') == -1) {
skipSymlinks = true;
}
runTest();
});
} catch (er) {
// better safe than sorry
skipSymlinks = true;
process.nextTick(runTest);
}
} else {
process.nextTick(runTest);
}
function tmp(p) {
return path.join(common.tmpDir, p);
}
var targetsAbsDir = path.join(common.tmpDir, 'targets');
var tmpAbsDir = common.tmpDir;
// Set up targetsAbsDir and expected subdirectories
fs.mkdirSync(targetsAbsDir);
fs.mkdirSync(path.join(targetsAbsDir, 'nested-index'));
fs.mkdirSync(path.join(targetsAbsDir, 'nested-index', 'one'));
fs.mkdirSync(path.join(targetsAbsDir, 'nested-index', 'two'));
function asynctest(testBlock, args, callback, assertBlock) {
async_expected++;
testBlock.apply(testBlock, args.concat(function(err) {
var ignoreError = false;
if (assertBlock) {
try {
ignoreError = assertBlock.apply(assertBlock, arguments);
}
catch (e) {
err = e;
}
}
async_completed++;
callback(ignoreError ? null : err);
}));
}
// sub-tests:
function test_simple_error_callback(cb) {
var ncalls = 0;
fs.realpath('/this/path/does/not/exist', function(err, s) {
assert(err);
assert(!s);
ncalls++;
cb();
});
process.on('exit', function() {
assert.equal(ncalls, 1);
});
}
function test_simple_relative_symlink(callback) {
console.log('test_simple_relative_symlink');
if (skipSymlinks) {
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
const entry = common.tmpDir + '/symlink';
const expected = common.tmpDir + '/cycles/root.js';
[
[entry, '../' + common.tmpDirName + '/cycles/root.js']
].forEach(function(t) {
try {fs.unlinkSync(t[0]);} catch (e) {}
console.log('fs.symlinkSync(%j, %j, %j)', t[1], t[0], 'file');
fs.symlinkSync(t[1], t[0], 'file');
unlink.push(t[0]);
});
var result = fs.realpathSync(entry);
assert.equal(result, path.resolve(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, path.resolve(expected));
});
}
function test_simple_absolute_symlink(callback) {
console.log('test_simple_absolute_symlink');
// this one should still run, even if skipSymlinks is set,
// because it uses a junction.
var type = skipSymlinks ? 'junction' : 'dir';
console.log('using type=%s', type);
const entry = tmpAbsDir + '/symlink';
const expected = common.fixturesDir + '/nested-index/one';
[
[entry, expected]
].forEach(function(t) {
try {fs.unlinkSync(t[0]);} catch (e) {}
console.error('fs.symlinkSync(%j, %j, %j)', t[1], t[0], type);
fs.symlinkSync(t[1], t[0], type);
unlink.push(t[0]);
});
var result = fs.realpathSync(entry);
assert.equal(result, path.resolve(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, path.resolve(expected));
});
}
function test_deep_relative_file_symlink(callback) {
console.log('test_deep_relative_file_symlink');
if (skipSymlinks) {
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
var expected = path.join(common.fixturesDir, 'cycles', 'root.js');
var linkData1 = path.relative(path.join(targetsAbsDir, 'nested-index', 'one'),
expected);
var linkPath1 = path.join(targetsAbsDir,
'nested-index', 'one', 'symlink1.js');
try {fs.unlinkSync(linkPath1);} catch (e) {}
fs.symlinkSync(linkData1, linkPath1, 'file');
var linkData2 = '../one/symlink1.js';
var entry = path.join(targetsAbsDir,
'nested-index', 'two', 'symlink1-b.js');
try {fs.unlinkSync(entry);} catch (e) {}
fs.symlinkSync(linkData2, entry, 'file');
unlink.push(linkPath1);
unlink.push(entry);
assert.equal(fs.realpathSync(entry), path.resolve(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, path.resolve(expected));
});
}
function test_deep_relative_dir_symlink(callback) {
console.log('test_deep_relative_dir_symlink');
if (skipSymlinks) {
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
var expected = path.join(common.fixturesDir, 'cycles', 'folder');
var path1b = path.join(targetsAbsDir, 'nested-index', 'one');
var linkPath1b = path.join(path1b, 'symlink1-dir');
var linkData1b = path.relative(path1b, expected);
try {fs.unlinkSync(linkPath1b);} catch (e) {}
fs.symlinkSync(linkData1b, linkPath1b, 'dir');
var linkData2b = '../one/symlink1-dir';
var entry = path.join(targetsAbsDir,
'nested-index', 'two', 'symlink12-dir');
try {fs.unlinkSync(entry);} catch (e) {}
fs.symlinkSync(linkData2b, entry, 'dir');
unlink.push(linkPath1b);
unlink.push(entry);
assert.equal(fs.realpathSync(entry), path.resolve(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, path.resolve(expected));
});
}
function test_cyclic_link_protection(callback) {
console.log('test_cyclic_link_protection');
if (skipSymlinks) {
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
var entry = common.tmpDir + '/cycles/realpath-3a';
[
[entry, '../cycles/realpath-3b'],
[common.tmpDir + '/cycles/realpath-3b', '../cycles/realpath-3c'],
[common.tmpDir + '/cycles/realpath-3c', '../cycles/realpath-3a']
].forEach(function(t) {
try {fs.unlinkSync(t[0]);} catch (e) {}
fs.symlinkSync(t[1], t[0], 'dir');
unlink.push(t[0]);
});
assert.throws(function() { fs.realpathSync(entry); });
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.ok(err && true);
return true;
});
}
function test_cyclic_link_overprotection(callback) {
console.log('test_cyclic_link_overprotection');
if (skipSymlinks) {
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
var cycles = common.tmpDir + '/cycles';
var expected = fs.realpathSync(cycles);
var folder = cycles + '/folder';
var link = folder + '/cycles';
var testPath = cycles;
testPath += '/folder/cycles'.repeat(10);
try {fs.unlinkSync(link);} catch (ex) {}
fs.symlinkSync(cycles, link, 'dir');
unlink.push(link);
assert.equal(fs.realpathSync(testPath), path.resolve(expected));
asynctest(fs.realpath, [testPath], callback, function(er, res) {
assert.equal(res, path.resolve(expected));
});
}
function test_relative_input_cwd(callback) {
console.log('test_relative_input_cwd');
if (skipSymlinks) {
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
// we need to calculate the relative path to the tmp dir from cwd
var entrydir = process.cwd();
var entry = path.relative(entrydir,
path.join(common.tmpDir + '/cycles/realpath-3a'));
var expected = common.tmpDir + '/cycles/root.js';
[
[entry, '../cycles/realpath-3b'],
[common.tmpDir + '/cycles/realpath-3b', '../cycles/realpath-3c'],
[common.tmpDir + '/cycles/realpath-3c', 'root.js']
].forEach(function(t) {
var fn = t[0];
console.error('fn=%j', fn);
try {fs.unlinkSync(fn);} catch (e) {}
var b = path.basename(t[1]);
var type = (b === 'root.js' ? 'file' : 'dir');
console.log('fs.symlinkSync(%j, %j, %j)', t[1], fn, type);
fs.symlinkSync(t[1], fn, 'file');
unlink.push(fn);
});
var origcwd = process.cwd();
process.chdir(entrydir);
assert.equal(fs.realpathSync(entry), path.resolve(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
process.chdir(origcwd);
assert.equal(result, path.resolve(expected));
return true;
});
}
function test_deep_symlink_mix(callback) {
console.log('test_deep_symlink_mix');
if (common.isWindows) {
// This one is a mix of files and directories, and it's quite tricky
// to get the file/dir links sorted out correctly.
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
/*
/tmp/node-test-realpath-f1 -> $tmpDir/node-test-realpath-d1/foo
/tmp/node-test-realpath-d1 -> $tmpDir/node-test-realpath-d2
/tmp/node-test-realpath-d2/foo -> $tmpDir/node-test-realpath-f2
/tmp/node-test-realpath-f2
-> $tmpDir/targets/nested-index/one/realpath-c
$tmpDir/targets/nested-index/one/realpath-c
-> $tmpDir/targets/nested-index/two/realpath-c
$tmpDir/targets/nested-index/two/realpath-c -> $tmpDir/cycles/root.js
$tmpDir/targets/cycles/root.js (hard)
*/
var entry = tmp('node-test-realpath-f1');
try { fs.unlinkSync(tmp('node-test-realpath-d2/foo')); } catch (e) {}
try { fs.rmdirSync(tmp('node-test-realpath-d2')); } catch (e) {}
fs.mkdirSync(tmp('node-test-realpath-d2'), 0o700);
try {
[
[entry, common.tmpDir + '/node-test-realpath-d1/foo'],
[tmp('node-test-realpath-d1'),
common.tmpDir + '/node-test-realpath-d2'],
[tmp('node-test-realpath-d2/foo'), '../node-test-realpath-f2'],
[tmp('node-test-realpath-f2'), targetsAbsDir +
'/nested-index/one/realpath-c'],
[targetsAbsDir + '/nested-index/one/realpath-c', targetsAbsDir +
'/nested-index/two/realpath-c'],
[targetsAbsDir + '/nested-index/two/realpath-c',
common.tmpDir + '/cycles/root.js']
].forEach(function(t) {
try { fs.unlinkSync(t[0]); } catch (e) {}
fs.symlinkSync(t[1], t[0]);
unlink.push(t[0]);
});
} finally {
unlink.push(tmp('node-test-realpath-d2'));
}
var expected = tmpAbsDir + '/cycles/root.js';
assert.equal(fs.realpathSync(entry), path.resolve(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, path.resolve(expected));
return true;
});
}
function test_non_symlinks(callback) {
console.log('test_non_symlinks');
var entrydir = path.dirname(tmpAbsDir);
var entry = tmpAbsDir.substr(entrydir.length + 1) + '/cycles/root.js';
var expected = tmpAbsDir + '/cycles/root.js';
var origcwd = process.cwd();
process.chdir(entrydir);
assert.equal(fs.realpathSync(entry), path.resolve(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
process.chdir(origcwd);
assert.equal(result, path.resolve(expected));
return true;
});
}
var upone = path.join(process.cwd(), '..');
function test_escape_cwd(cb) {
console.log('test_escape_cwd');
asynctest(fs.realpath, ['..'], cb, function(er, uponeActual) {
assert.equal(upone, uponeActual,
'realpath("..") expected: ' + path.resolve(upone) +
' actual:' + uponeActual);
});
}
var uponeActual = fs.realpathSync('..');
assert.equal(upone, uponeActual,
'realpathSync("..") expected: ' + path.resolve(upone) +
' actual:' + uponeActual);
// going up with .. multiple times
// .
// `-- a/
// |-- b/
// | `-- e -> ..
// `-- d -> ..
// realpath(a/b/e/d/a/b/e/d/a) ==> a
function test_up_multiple(cb) {
console.error('test_up_multiple');
if (skipSymlinks) {
console.log('1..0 # Skipped: symlink test (no privs)');
return runNextTest();
}
function cleanup() {
['a/b',
'a'
].forEach(function(folder) {
try {fs.rmdirSync(tmp(folder));} catch (ex) {}
});
}
function setup() {
cleanup();
}
setup();
fs.mkdirSync(tmp('a'), 0o755);
fs.mkdirSync(tmp('a/b'), 0o755);
fs.symlinkSync('..', tmp('a/d'), 'dir');
unlink.push(tmp('a/d'));
fs.symlinkSync('..', tmp('a/b/e'), 'dir');
unlink.push(tmp('a/b/e'));
var abedabed = tmp('abedabed'.split('').join('/'));
var abedabed_real = tmp('');
var abedabeda = tmp('abedabeda'.split('').join('/'));
var abedabeda_real = tmp('a');
assert.equal(fs.realpathSync(abedabeda), abedabeda_real);
assert.equal(fs.realpathSync(abedabed), abedabed_real);
fs.realpath(abedabeda, function(er, real) {
if (er) throw er;
assert.equal(abedabeda_real, real);
fs.realpath(abedabed, function(er, real) {
if (er) throw er;
assert.equal(abedabed_real, real);
cb();
cleanup();
});
});
}
// absolute symlinks with children.
// .
// `-- a/
// |-- b/
// | `-- c/
// | `-- x.txt
// `-- link -> /tmp/node-test-realpath-abs-kids/a/b/
// realpath(root+'/a/link/c/x.txt') ==> root+'/a/b/c/x.txt'
function test_abs_with_kids(cb) {
console.log('test_abs_with_kids');
// this one should still run, even if skipSymlinks is set,
// because it uses a junction.
var type = skipSymlinks ? 'junction' : 'dir';
console.log('using type=%s', type);
var root = tmpAbsDir + '/node-test-realpath-abs-kids';
function cleanup() {
['/a/b/c/x.txt',
'/a/link'
].forEach(function(file) {
try {fs.unlinkSync(root + file);} catch (ex) {}
});
['/a/b/c',
'/a/b',
'/a',
''
].forEach(function(folder) {
try {fs.rmdirSync(root + folder);} catch (ex) {}
});
}
function setup() {
cleanup();
['',
'/a',
'/a/b',
'/a/b/c'
].forEach(function(folder) {
console.log('mkdir ' + root + folder);
fs.mkdirSync(root + folder, 0o700);
});
fs.writeFileSync(root + '/a/b/c/x.txt', 'foo');
fs.symlinkSync(root + '/a/b', root + '/a/link', type);
}
setup();
var linkPath = root + '/a/link/c/x.txt';
var expectPath = root + '/a/b/c/x.txt';
var actual = fs.realpathSync(linkPath);
// console.log({link:linkPath,expect:expectPath,actual:actual},'sync');
assert.equal(actual, path.resolve(expectPath));
asynctest(fs.realpath, [linkPath], cb, function(er, actual) {
// console.log({link:linkPath,expect:expectPath,actual:actual},'async');
assert.equal(actual, path.resolve(expectPath));
cleanup();
});
}
function test_lying_cache_liar(cb) {
var n = 2;
// this should not require *any* stat calls, since everything
// checked by realpath will be found in the cache.
console.log('test_lying_cache_liar');
var cache = { '/foo/bar/baz/bluff' : '/foo/bar/bluff',
'/1/2/3/4/5/6/7' : '/1',
'/a' : '/a',
'/a/b' : '/a/b',
'/a/b/c' : '/a/b',
'/a/b/d' : '/a/b/d' };
if (common.isWindows) {
var wc = {};
Object.keys(cache).forEach(function(k) {
wc[ path.resolve(k) ] = path.resolve(cache[k]);
});
cache = wc;
}
var bluff = path.resolve('/foo/bar/baz/bluff');
var rps = fs.realpathSync(bluff, cache);
assert.equal(cache[bluff], rps);
var nums = path.resolve('/1/2/3/4/5/6/7');
var called = false; // no sync cb calling!
fs.realpath(nums, cache, function(er, rp) {
called = true;
assert.equal(cache[nums], rp);
if (--n === 0) cb();
});
assert(called === false);
const test = path.resolve('/a/b/c/d');
const expect = path.resolve('/a/b/d');
var actual = fs.realpathSync(test, cache);
assert.equal(expect, actual);
fs.realpath(test, cache, function(er, actual) {
assert.equal(expect, actual);
if (--n === 0) cb();
});
}
// ----------------------------------------------------------------------------
var tests = [
test_simple_error_callback,
test_simple_relative_symlink,
test_simple_absolute_symlink,
test_deep_relative_file_symlink,
test_deep_relative_dir_symlink,
test_cyclic_link_protection,
test_cyclic_link_overprotection,
test_relative_input_cwd,
test_deep_symlink_mix,
test_non_symlinks,
test_escape_cwd,
test_abs_with_kids,
test_lying_cache_liar,
test_up_multiple
];
var numtests = tests.length;
var testsRun = 0;
function runNextTest(err) {
if (err) throw err;
var test = tests.shift();
if (!test) {
return console.log(numtests +
' subtests completed OK for fs.realpath');
}
testsRun++;
test(runNextTest);
}
assert.equal(root, fs.realpathSync('/'));
fs.realpath('/', function(err, result) {
assert.equal(null, err);
assert.equal(root, result);
});
function runTest() {
var tmpDirs = ['cycles', 'cycles/folder'];
tmpDirs.forEach(function(t) {
t = tmp(t);
fs.mkdirSync(t, 0o700);
});
fs.writeFileSync(tmp('cycles/root.js'), "console.error('roooot!');");
console.error('start tests');
runNextTest();
}
process.on('exit', function() {
assert.equal(numtests, testsRun);
unlink.forEach(function(path) { try {fs.unlinkSync(path);} catch (e) {} });
assert.equal(async_completed, async_expected);
});