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539 lines
17 KiB
539 lines
17 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const fs = require('fs');
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const path = require('path');
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const exec = require('child_process').exec;
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let async_completed = 0;
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let async_expected = 0;
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const unlink = [];
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let skipSymlinks = false;
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const tmpDir = common.tmpDir;
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common.refreshTmpDir();
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let root = '/';
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let assertEqualPath = assert.strictEqual;
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if (common.isWindows) {
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// something like "C:\\"
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root = process.cwd().substr(0, 3);
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assertEqualPath = function(path_left, path_right, message) {
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assert
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.strictEqual(path_left.toLowerCase(), path_right.toLowerCase(), message);
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};
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// On Windows, creating symlinks requires admin privileges.
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// We'll only try to run symlink test if we have enough privileges.
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try {
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exec('whoami /priv', function(err, o) {
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if (err || !o.includes('SeCreateSymbolicLinkPrivilege')) {
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skipSymlinks = true;
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}
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runTest();
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});
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} catch (er) {
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// better safe than sorry
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skipSymlinks = true;
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process.nextTick(runTest);
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}
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} else {
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process.nextTick(runTest);
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}
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function tmp(p) {
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return path.join(tmpDir, p);
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}
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const targetsAbsDir = path.join(tmpDir, 'targets');
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const tmpAbsDir = tmpDir;
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// Set up targetsAbsDir and expected subdirectories
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fs.mkdirSync(targetsAbsDir);
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fs.mkdirSync(path.join(targetsAbsDir, 'nested-index'));
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fs.mkdirSync(path.join(targetsAbsDir, 'nested-index', 'one'));
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fs.mkdirSync(path.join(targetsAbsDir, 'nested-index', 'two'));
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function asynctest(testBlock, args, callback, assertBlock) {
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async_expected++;
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testBlock.apply(testBlock, args.concat(function(err) {
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let ignoreError = false;
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if (assertBlock) {
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try {
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ignoreError = assertBlock.apply(assertBlock, arguments);
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} catch (e) {
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err = e;
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}
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}
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async_completed++;
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callback(ignoreError ? null : err);
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}));
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}
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// sub-tests:
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function test_simple_error_callback(cb) {
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fs.realpath('/this/path/does/not/exist', common.mustCall(function(err, s) {
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assert(err);
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assert(!s);
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cb();
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}));
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}
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function test_simple_relative_symlink(callback) {
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console.log('test_simple_relative_symlink');
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if (skipSymlinks) {
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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const entry = `${tmpDir}/symlink`;
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const expected = `${tmpDir}/cycles/root.js`;
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[
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[entry, `../${common.tmpDirName}/cycles/root.js`]
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].forEach(function(t) {
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try { fs.unlinkSync(t[0]); } catch (e) {}
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console.log('fs.symlinkSync(%j, %j, %j)', t[1], t[0], 'file');
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fs.symlinkSync(t[1], t[0], 'file');
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unlink.push(t[0]);
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});
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const result = fs.realpathSync(entry);
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assertEqualPath(result, path.resolve(expected));
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asynctest(fs.realpath, [entry], callback, function(err, result) {
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assertEqualPath(result, path.resolve(expected));
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});
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}
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function test_simple_absolute_symlink(callback) {
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console.log('test_simple_absolute_symlink');
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// this one should still run, even if skipSymlinks is set,
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// because it uses a junction.
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const type = skipSymlinks ? 'junction' : 'dir';
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console.log('using type=%s', type);
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const entry = `${tmpAbsDir}/symlink`;
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const expected = `${common.fixturesDir}/nested-index/one`;
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[
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[entry, expected]
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].forEach(function(t) {
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try { fs.unlinkSync(t[0]); } catch (e) {}
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console.error('fs.symlinkSync(%j, %j, %j)', t[1], t[0], type);
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fs.symlinkSync(t[1], t[0], type);
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unlink.push(t[0]);
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});
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const result = fs.realpathSync(entry);
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assertEqualPath(result, path.resolve(expected));
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asynctest(fs.realpath, [entry], callback, function(err, result) {
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assertEqualPath(result, path.resolve(expected));
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});
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}
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function test_deep_relative_file_symlink(callback) {
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console.log('test_deep_relative_file_symlink');
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if (skipSymlinks) {
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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const expected = path.join(common.fixturesDir, 'cycles', 'root.js');
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const linkData1 = path
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.relative(path.join(targetsAbsDir, 'nested-index', 'one'),
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expected);
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const linkPath1 = path.join(targetsAbsDir,
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'nested-index', 'one', 'symlink1.js');
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try { fs.unlinkSync(linkPath1); } catch (e) {}
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fs.symlinkSync(linkData1, linkPath1, 'file');
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const linkData2 = '../one/symlink1.js';
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const entry = path.join(targetsAbsDir,
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'nested-index', 'two', 'symlink1-b.js');
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try { fs.unlinkSync(entry); } catch (e) {}
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fs.symlinkSync(linkData2, entry, 'file');
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unlink.push(linkPath1);
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unlink.push(entry);
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assertEqualPath(fs.realpathSync(entry), path.resolve(expected));
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asynctest(fs.realpath, [entry], callback, function(err, result) {
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assertEqualPath(result, path.resolve(expected));
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});
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}
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function test_deep_relative_dir_symlink(callback) {
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console.log('test_deep_relative_dir_symlink');
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if (skipSymlinks) {
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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const expected = path.join(common.fixturesDir, 'cycles', 'folder');
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const path1b = path.join(targetsAbsDir, 'nested-index', 'one');
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const linkPath1b = path.join(path1b, 'symlink1-dir');
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const linkData1b = path.relative(path1b, expected);
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try { fs.unlinkSync(linkPath1b); } catch (e) {}
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fs.symlinkSync(linkData1b, linkPath1b, 'dir');
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const linkData2b = '../one/symlink1-dir';
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const entry = path.join(targetsAbsDir,
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'nested-index', 'two', 'symlink12-dir');
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try { fs.unlinkSync(entry); } catch (e) {}
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fs.symlinkSync(linkData2b, entry, 'dir');
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unlink.push(linkPath1b);
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unlink.push(entry);
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assertEqualPath(fs.realpathSync(entry), path.resolve(expected));
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asynctest(fs.realpath, [entry], callback, function(err, result) {
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assertEqualPath(result, path.resolve(expected));
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});
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}
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function test_cyclic_link_protection(callback) {
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console.log('test_cyclic_link_protection');
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if (skipSymlinks) {
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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const entry = path.join(tmpDir, '/cycles/realpath-3a');
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[
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[entry, '../cycles/realpath-3b'],
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[path.join(tmpDir, '/cycles/realpath-3b'), '../cycles/realpath-3c'],
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[path.join(tmpDir, '/cycles/realpath-3c'), '../cycles/realpath-3a']
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].forEach(function(t) {
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try { fs.unlinkSync(t[0]); } catch (e) {}
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fs.symlinkSync(t[1], t[0], 'dir');
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unlink.push(t[0]);
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});
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assert.throws(() => {
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fs.realpathSync(entry);
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}, common.expectsError({ code: 'ELOOP', type: Error }));
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asynctest(
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fs.realpath, [entry], callback, common.mustCall(function(err, result) {
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assert.strictEqual(err.path, entry);
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assert.strictEqual(result, undefined);
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return true;
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}));
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}
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function test_cyclic_link_overprotection(callback) {
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console.log('test_cyclic_link_overprotection');
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if (skipSymlinks) {
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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const cycles = `${tmpDir}/cycles`;
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const expected = fs.realpathSync(cycles);
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const folder = `${cycles}/folder`;
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const link = `${folder}/cycles`;
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let testPath = cycles;
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testPath += '/folder/cycles'.repeat(10);
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try { fs.unlinkSync(link); } catch (ex) {}
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fs.symlinkSync(cycles, link, 'dir');
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unlink.push(link);
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assertEqualPath(fs.realpathSync(testPath), path.resolve(expected));
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asynctest(fs.realpath, [testPath], callback, function(er, res) {
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assertEqualPath(res, path.resolve(expected));
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});
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}
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function test_relative_input_cwd(callback) {
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console.log('test_relative_input_cwd');
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if (skipSymlinks) {
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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// we need to calculate the relative path to the tmp dir from cwd
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const entrydir = process.cwd();
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const entry = path.relative(entrydir,
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path.join(`${tmpDir}/cycles/realpath-3a`));
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const expected = `${tmpDir}/cycles/root.js`;
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[
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[entry, '../cycles/realpath-3b'],
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[`${tmpDir}/cycles/realpath-3b`, '../cycles/realpath-3c'],
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[`${tmpDir}/cycles/realpath-3c`, 'root.js']
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].forEach(function(t) {
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const fn = t[0];
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console.error('fn=%j', fn);
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try { fs.unlinkSync(fn); } catch (e) {}
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const b = path.basename(t[1]);
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const type = (b === 'root.js' ? 'file' : 'dir');
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console.log('fs.symlinkSync(%j, %j, %j)', t[1], fn, type);
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fs.symlinkSync(t[1], fn, 'file');
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unlink.push(fn);
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});
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const origcwd = process.cwd();
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process.chdir(entrydir);
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assertEqualPath(fs.realpathSync(entry), path.resolve(expected));
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asynctest(fs.realpath, [entry], callback, function(err, result) {
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process.chdir(origcwd);
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assertEqualPath(result, path.resolve(expected));
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return true;
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});
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}
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function test_deep_symlink_mix(callback) {
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console.log('test_deep_symlink_mix');
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if (common.isWindows) {
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// This one is a mix of files and directories, and it's quite tricky
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// to get the file/dir links sorted out correctly.
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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/*
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/tmp/node-test-realpath-f1 -> $tmpDir/node-test-realpath-d1/foo
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/tmp/node-test-realpath-d1 -> $tmpDir/node-test-realpath-d2
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/tmp/node-test-realpath-d2/foo -> $tmpDir/node-test-realpath-f2
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/tmp/node-test-realpath-f2
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-> $tmpDir/targets/nested-index/one/realpath-c
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$tmpDir/targets/nested-index/one/realpath-c
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-> $tmpDir/targets/nested-index/two/realpath-c
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$tmpDir/targets/nested-index/two/realpath-c -> $tmpDir/cycles/root.js
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$tmpDir/targets/cycles/root.js (hard)
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*/
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const entry = tmp('node-test-realpath-f1');
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try { fs.unlinkSync(tmp('node-test-realpath-d2/foo')); } catch (e) {}
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try { fs.rmdirSync(tmp('node-test-realpath-d2')); } catch (e) {}
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fs.mkdirSync(tmp('node-test-realpath-d2'), 0o700);
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try {
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[
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[entry, `${tmpDir}/node-test-realpath-d1/foo`],
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[tmp('node-test-realpath-d1'),
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`${tmpDir}/node-test-realpath-d2`],
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[tmp('node-test-realpath-d2/foo'), '../node-test-realpath-f2'],
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[tmp('node-test-realpath-f2'),
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`${targetsAbsDir}/nested-index/one/realpath-c`],
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[`${targetsAbsDir}/nested-index/one/realpath-c`,
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`${targetsAbsDir}/nested-index/two/realpath-c`],
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[`${targetsAbsDir}/nested-index/two/realpath-c`,
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`${tmpDir}/cycles/root.js`]
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].forEach(function(t) {
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try { fs.unlinkSync(t[0]); } catch (e) {}
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fs.symlinkSync(t[1], t[0]);
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unlink.push(t[0]);
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});
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} finally {
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unlink.push(tmp('node-test-realpath-d2'));
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}
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const expected = `${tmpAbsDir}/cycles/root.js`;
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assertEqualPath(fs.realpathSync(entry), path.resolve(expected));
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asynctest(fs.realpath, [entry], callback, function(err, result) {
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assertEqualPath(result, path.resolve(expected));
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return true;
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});
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}
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function test_non_symlinks(callback) {
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console.log('test_non_symlinks');
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const entrydir = path.dirname(tmpAbsDir);
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const entry = `${tmpAbsDir.substr(entrydir.length + 1)}/cycles/root.js`;
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const expected = `${tmpAbsDir}/cycles/root.js`;
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const origcwd = process.cwd();
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process.chdir(entrydir);
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assertEqualPath(fs.realpathSync(entry), path.resolve(expected));
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asynctest(fs.realpath, [entry], callback, function(err, result) {
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process.chdir(origcwd);
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assertEqualPath(result, path.resolve(expected));
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return true;
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});
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}
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const upone = path.join(process.cwd(), '..');
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function test_escape_cwd(cb) {
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console.log('test_escape_cwd');
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asynctest(fs.realpath, ['..'], cb, function(er, uponeActual) {
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assertEqualPath(
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upone, uponeActual,
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`realpath("..") expected: ${path.resolve(upone)} actual:${uponeActual}`);
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});
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}
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const uponeActual = fs.realpathSync('..');
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assertEqualPath(
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upone, uponeActual,
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`realpathSync("..") expected: ${path.resolve(upone)} actual:${uponeActual}`);
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// going up with .. multiple times
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// .
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// `-- a/
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// |-- b/
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// | `-- e -> ..
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// `-- d -> ..
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// realpath(a/b/e/d/a/b/e/d/a) ==> a
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function test_up_multiple(cb) {
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console.error('test_up_multiple');
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if (skipSymlinks) {
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common.printSkipMessage('symlink test (no privs)');
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return runNextTest();
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}
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function cleanup() {
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['a/b',
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'a'
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].forEach(function(folder) {
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try { fs.rmdirSync(tmp(folder)); } catch (ex) {}
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});
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}
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function setup() {
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cleanup();
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}
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setup();
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fs.mkdirSync(tmp('a'), 0o755);
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fs.mkdirSync(tmp('a/b'), 0o755);
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fs.symlinkSync('..', tmp('a/d'), 'dir');
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unlink.push(tmp('a/d'));
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fs.symlinkSync('..', tmp('a/b/e'), 'dir');
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unlink.push(tmp('a/b/e'));
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const abedabed = tmp('abedabed'.split('').join('/'));
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const abedabed_real = tmp('');
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const abedabeda = tmp('abedabeda'.split('').join('/'));
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const abedabeda_real = tmp('a');
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assertEqualPath(fs.realpathSync(abedabeda), abedabeda_real);
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assertEqualPath(fs.realpathSync(abedabed), abedabed_real);
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fs.realpath(abedabeda, function(er, real) {
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assert.ifError(er);
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assertEqualPath(abedabeda_real, real);
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fs.realpath(abedabed, function(er, real) {
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assert.ifError(er);
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assertEqualPath(abedabed_real, real);
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cb();
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cleanup();
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});
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});
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}
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// absolute symlinks with children.
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// .
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// `-- a/
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// |-- b/
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// | `-- c/
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// | `-- x.txt
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// `-- link -> /tmp/node-test-realpath-abs-kids/a/b/
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// realpath(root+'/a/link/c/x.txt') ==> root+'/a/b/c/x.txt'
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function test_abs_with_kids(cb) {
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console.log('test_abs_with_kids');
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// this one should still run, even if skipSymlinks is set,
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// because it uses a junction.
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const type = skipSymlinks ? 'junction' : 'dir';
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console.log('using type=%s', type);
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const root = `${tmpAbsDir}/node-test-realpath-abs-kids`;
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function cleanup() {
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['/a/b/c/x.txt',
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'/a/link'
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].forEach(function(file) {
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try { fs.unlinkSync(root + file); } catch (ex) {}
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});
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['/a/b/c',
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'/a/b',
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'/a',
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''
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].forEach(function(folder) {
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try { fs.rmdirSync(root + folder); } catch (ex) {}
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});
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}
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function setup() {
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cleanup();
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['',
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'/a',
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'/a/b',
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'/a/b/c'
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].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`, `${root}/a/link`, type);
|
|
}
|
|
setup();
|
|
const linkPath = `${root}/a/link/c/x.txt`;
|
|
const expectPath = `${root}/a/b/c/x.txt`;
|
|
const actual = fs.realpathSync(linkPath);
|
|
// console.log({link:linkPath,expect:expectPath,actual:actual},'sync');
|
|
assertEqualPath(actual, path.resolve(expectPath));
|
|
asynctest(fs.realpath, [linkPath], cb, function(er, actual) {
|
|
// console.log({link:linkPath,expect:expectPath,actual:actual},'async');
|
|
assertEqualPath(actual, path.resolve(expectPath));
|
|
cleanup();
|
|
});
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
const tests = [
|
|
test_simple_error_callback,
|
|
test_simple_relative_symlink,
|
|
test_simple_absolute_symlink,
|
|
test_deep_relative_file_symlink,
|
|
test_deep_relative_dir_symlink,
|
|
test_cyclic_link_protection,
|
|
test_cyclic_link_overprotection,
|
|
test_relative_input_cwd,
|
|
test_deep_symlink_mix,
|
|
test_non_symlinks,
|
|
test_escape_cwd,
|
|
test_abs_with_kids,
|
|
test_up_multiple
|
|
];
|
|
const numtests = tests.length;
|
|
let testsRun = 0;
|
|
function runNextTest(err) {
|
|
assert.ifError(err);
|
|
const test = tests.shift();
|
|
if (!test) {
|
|
return console.log(`${numtests} subtests completed OK for fs.realpath`);
|
|
}
|
|
testsRun++;
|
|
test(runNextTest);
|
|
}
|
|
|
|
|
|
assertEqualPath(root, fs.realpathSync('/'));
|
|
fs.realpath('/', function(err, result) {
|
|
assert.ifError(err);
|
|
assertEqualPath(root, result);
|
|
});
|
|
|
|
|
|
function runTest() {
|
|
const 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.strictEqual(numtests, testsRun);
|
|
assert.strictEqual(async_completed, async_expected);
|
|
});
|
|
|