PHP WebShell
Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@expo/sudo-prompt
Просмотр файла: index.js
var Node = {
child: require('child_process'),
crypto: require('crypto'),
fs: require('fs'),
os: require('os'),
path: require('path'),
process: process,
};
class SudoPromptError extends Error {
constructor(message) {
super(message);
this.name = 'SudoPromptError';
}
}
function Attempt(instance, end) {
var platform = Node.process.platform;
if (platform === 'darwin') return Mac(instance, end);
if (platform === 'linux') return Linux(instance, end);
if (platform === 'win32') return Windows(instance, end);
end(new SudoPromptError('Platform not yet supported.'));
}
function EscapeDoubleQuotes(string) {
if (typeof string !== 'string') throw new SudoPromptError('Expected a string.');
return string.replace(/"/g, '\\"');
}
function Exec() {
if (arguments.length < 1 || arguments.length > 3) {
throw new SudoPromptError('Wrong number of arguments.');
}
var command = arguments[0];
var options = {};
var end = function() {};
if (typeof command !== 'string') {
throw new SudoPromptError('Command should be a string.');
}
if (arguments.length === 2) {
if (arguments[1] && typeof arguments[1] === 'object') {
options = arguments[1];
} else if (typeof arguments[1] === 'function') {
end = arguments[1];
} else {
throw new SudoPromptError('Expected options or callback.');
}
} else if (arguments.length === 3) {
if (arguments[1] && typeof arguments[1] === 'object') {
options = arguments[1];
} else {
throw new SudoPromptError('Expected options to be an object.');
}
if (typeof arguments[2] === 'function') {
end = arguments[2];
} else {
throw new SudoPromptError('Expected callback to be a function.');
}
}
if (/^sudo/i.test(command)) {
return end(new SudoPromptError('Command should not be prefixed with "sudo".'));
}
if (typeof options.name === 'undefined') {
var title = Node.process.title;
if (ValidName(title)) {
options.name = title;
} else {
return end(new SudoPromptError('process.title cannot be used as a valid name.'));
}
} else if (!ValidName(options.name)) {
var error = '';
error += 'options.name must be alphanumeric only ';
error += '(spaces are allowed) and <= 70 characters.';
return end(new SudoPromptError(error));
}
if (typeof options.icns !== 'undefined') {
if (typeof options.icns !== 'string') {
return end(new SudoPromptError('options.icns must be a string if provided.'));
} else if (options.icns.trim().length === 0) {
return end(new SudoPromptError('options.icns must not be empty if provided.'));
}
}
if (typeof options.env !== 'undefined') {
if (typeof options.env !== 'object') {
return end(new SudoPromptError('options.env must be an object if provided.'));
} else if (Object.keys(options.env).length === 0) {
return end(new SudoPromptError('options.env must not be empty if provided.'));
} else {
for (var key in options.env) {
var value = options.env[key];
if (typeof key !== 'string' || typeof value !== 'string') {
return end(
new SudoPromptError('options.env environment variables must be strings.')
);
}
// "Environment variable names used by the utilities in the Shell and
// Utilities volume of IEEE Std 1003.1-2001 consist solely of uppercase
// letters, digits, and the '_' (underscore) from the characters defined
// in Portable Character Set and do not begin with a digit. Other
// characters may be permitted by an implementation; applications shall
// tolerate the presence of such names."
if (!/^[a-zA-Z_][a-zA-Z0-9_]*$/.test(key)) {
return end(
new SudoPromptError(
'options.env has an invalid environment variable name: ' +
JSON.stringify(key)
)
);
}
if (/[\r\n]/.test(value)) {
return end(
new SudoPromptError(
'options.env has an invalid environment variable value: ' +
JSON.stringify(value)
)
);
}
}
}
}
var platform = Node.process.platform;
if (platform !== 'darwin' && platform !== 'linux' && platform !== 'win32') {
return end(new SudoPromptError('Platform not yet supported.'));
}
var instance = {
command: command,
options: options,
uuid: undefined,
path: undefined
};
Attempt(instance, end);
}
function Linux(instance, end) {
LinuxBinary(instance,
function(error, binary) {
if (error) return end(error);
var command = [];
// Preserve current working directory:
command.push('cd "' + EscapeDoubleQuotes(Node.process.cwd()) + '";');
// Export environment variables:
for (var key in instance.options.env) {
var value = instance.options.env[key];
command.push('export ' + key + '="' + EscapeDoubleQuotes(value) + '";');
}
command.push('"' + EscapeDoubleQuotes(binary) + '"');
if (/kdesudo/i.test(binary)) {
command.push(
'--comment',
'"' + instance.options.name + ' wants to make changes. ' +
'Enter your password to allow this."'
);
command.push('-d'); // Do not show the command to be run in the dialog.
command.push('--');
} else if (/pkexec/i.test(binary)) {
command.push('--disable-internal-agent');
}
var magic = 'SUDOPROMPT\n';
command.push(
'/bin/bash -c "echo ' + EscapeDoubleQuotes(magic.trim()) + '; ' +
EscapeDoubleQuotes(instance.command) +
'"'
);
command = command.join(' ');
Node.child.exec(command, { encoding: 'utf-8', maxBuffer: MAX_BUFFER },
function(error, stdout, stderr) {
// ISSUE 88:
// We must distinguish between elevation errors and command errors.
//
// KDESUDO:
// kdesudo provides no way to do this. We add a magic marker to know
// if elevation succeeded. Any error thereafter is a command error.
//
// PKEXEC:
// "Upon successful completion, the return value is the return value of
// PROGRAM. If the calling process is not authorized or an
// authorization could not be obtained through authentication or an
// error occured, pkexec exits with a return value of 127. If the
// authorization could not be obtained because the user dismissed the
// authentication dialog, pkexec exits with a return value of 126."
//
// However, we do not rely on pkexec's return of 127 since our magic
// marker is more reliable, and we already use it for kdesudo.
var elevated = stdout && stdout.slice(0, magic.length) === magic;
if (elevated) stdout = stdout.slice(magic.length);
// Only normalize the error if it is definitely not a command error:
// In other words, if we know that the command was never elevated.
// We do not inspect error messages beyond NO_POLKIT_AGENT.
// We cannot rely on English errors because of internationalization.
if (error && !elevated) {
if (/No authentication agent found/.test(stderr)) {
error = new SudoPromptError(NO_POLKIT_AGENT);
} else {
error = new SudoPromptError(PERMISSION_DENIED);
}
}
end(error, stdout, stderr);
}
);
}
);
}
function LinuxBinary(instance, end) {
var index = 0;
// We used to prefer gksudo over pkexec since it enabled a better prompt.
// However, gksudo cannot run multiple commands concurrently.
var paths = ['/usr/bin/kdesudo', '/usr/bin/pkexec'];
function test() {
if (index === paths.length) {
return end(new SudoPromptError('Unable to find pkexec or kdesudo.'));
}
var path = paths[index++];
Node.fs.stat(path,
function(error) {
if (error) {
if (error.code === 'ENOTDIR') return test();
if (error.code === 'ENOENT') return test();
end(error);
} else {
end(undefined, path);
}
}
);
}
test();
}
function Mac(instance, callback) {
var temp = Node.os.tmpdir();
if (!temp) return callback(new SudoPromptError('os.tmpdir() not defined.'));
var user = Node.process.env.USER; // Applet shell scripts require $USER.
if (!user) return callback(new SudoPromptError('env[\'USER\'] not defined.'));
UUID(instance,
function(error, uuid) {
if (error) return callback(error);
instance.uuid = uuid;
instance.path = Node.path.join(
temp,
instance.uuid,
instance.options.name + '.app'
);
function end(error, stdout, stderr) {
Remove(Node.path.dirname(instance.path),
function(errorRemove) {
if (error) return callback(error);
if (errorRemove) return callback(errorRemove);
callback(undefined, stdout, stderr);
}
);
}
MacApplet(instance,
function(error, stdout, stderr) {
if (error) return end(error, stdout, stderr);
MacIcon(instance,
function(error) {
if (error) return end(error);
MacPropertyList(instance,
function(error, stdout, stderr) {
if (error) return end(error, stdout, stderr);
MacCommand(instance,
function(error) {
if (error) return end(error);
MacOpen(instance,
function(error, stdout, stderr) {
if (error) return end(error, stdout, stderr);
MacResult(instance, end);
}
);
}
);
}
);
}
);
}
);
}
);
}
function MacApplet(instance, end) {
var parent = Node.path.dirname(instance.path);
Node.fs.mkdir(parent,
function(error) {
if (error) return end(error);
var zip = Node.path.join(parent, 'sudo-prompt-applet.zip');
Node.fs.writeFile(zip, APPLET, 'base64',
function(error) {
if (error) return end(error);
var command = [];
command.push('/usr/bin/unzip');
command.push('-o'); // Overwrite any existing applet.
command.push('"' + EscapeDoubleQuotes(zip) + '"');
command.push('-d "' + EscapeDoubleQuotes(instance.path) + '"');
command = command.join(' ');
Node.child.exec(command, { encoding: 'utf-8' }, end);
}
);
}
);
}
function MacCommand(instance, end) {
var path = Node.path.join(
instance.path,
'Contents',
'MacOS',
'sudo-prompt-command'
);
var script = [];
// Preserve current working directory:
// We do this for commands that rely on relative paths.
// This runs in a subshell and will not change the cwd of sudo-prompt-script.
script.push('cd "' + EscapeDoubleQuotes(Node.process.cwd()) + '"');
// Export environment variables:
for (var key in instance.options.env) {
var value = instance.options.env[key];
script.push('export ' + key + '="' + EscapeDoubleQuotes(value) + '"');
}
script.push(instance.command);
script = script.join('\n');
Node.fs.writeFile(path, script, 'utf-8', end);
}
function MacIcon(instance, end) {
if (!instance.options.icns) return end();
Node.fs.readFile(instance.options.icns,
function(error, buffer) {
if (error) return end(error);
var icns = Node.path.join(
instance.path,
'Contents',
'Resources',
'applet.icns'
);
Node.fs.writeFile(icns, buffer, end);
}
);
}
function MacOpen(instance, end) {
// We must run the binary directly so that the cwd will apply.
var binary = Node.path.join(instance.path, 'Contents', 'MacOS', 'applet');
// We must set the cwd so that the AppleScript can find the shell scripts.
var options = {
cwd: Node.path.dirname(binary),
encoding: 'utf-8'
};
// We use the relative path rather than the absolute path. The instance.path
// may contain spaces which the cwd can handle, but which exec() cannot.
Node.child.exec('./' + Node.path.basename(binary), options, end);
}
function MacPropertyList(instance, end) {
// Value must be in single quotes (not double quotes) according to man entry.
// e.g. defaults write com.companyname.appname "Default Color" '(255, 0, 0)'
// The defaults command will be changed in an upcoming major release to only
// operate on preferences domains. General plist manipulation utilities will
// be folded into a different command-line program.
var plist = Node.path.join(instance.path, 'Contents', 'Info.plist');
var path = EscapeDoubleQuotes(plist);
var key = EscapeDoubleQuotes('CFBundleName');
var value = instance.options.name + ' Password Prompt';
if (/'/.test(value)) {
return end(new SudoPromptError('Value should not contain single quotes.'));
}
var command = [];
command.push('/usr/bin/defaults');
command.push('write');
command.push('"' + path + '"');
command.push('"' + key + '"');
command.push("'" + value + "'"); // We must use single quotes for value.
command = command.join(' ');
Node.child.exec(command, { encoding: 'utf-8' }, end);
}
function MacResult(instance, end) {
var cwd = Node.path.join(instance.path, 'Contents', 'MacOS');
Node.fs.readFile(Node.path.join(cwd, 'code'), 'utf-8',
function(error, code) {
if (error) {
if (error.code === 'ENOENT') return end(new SudoPromptError(PERMISSION_DENIED));
end(error);
} else {
Node.fs.readFile(Node.path.join(cwd, 'stdout'), 'utf-8',
function(error, stdout) {
if (error) return end(error);
Node.fs.readFile(Node.path.join(cwd, 'stderr'), 'utf-8',
function(error, stderr) {
if (error) return end(error);
code = parseInt(code.trim(), 10); // Includes trailing newline.
if (code === 0) {
end(undefined, stdout, stderr);
} else {
error = new SudoPromptError(
'Command failed: ' + instance.command + '\n' + stderr
);
error.code = code;
end(error, stdout, stderr);
}
}
);
}
);
}
}
);
}
function Remove(path, end) {
if (typeof path !== 'string' || !path.trim()) {
return end(new SudoPromptError('Argument path not defined.'));
}
var command = [];
if (Node.process.platform === 'win32') {
if (/"/.test(path)) {
return end(new SudoPromptError('Argument path cannot contain double-quotes.'));
}
command.push('rmdir /s /q "' + path + '"');
} else {
command.push('/bin/rm');
command.push('-rf');
command.push('"' + EscapeDoubleQuotes(Node.path.normalize(path)) + '"');
}
command = command.join(' ');
Node.child.exec(command, { encoding: 'utf-8' }, end);
}
function UUID(instance, end) {
Node.crypto.randomBytes(256,
function(error, random) {
if (error) random = Date.now() + '' + Math.random();
var hash = Node.crypto.createHash('SHA256');
hash.update('sudo-prompt-3');
hash.update(instance.options.name);
hash.update(instance.command);
hash.update(random);
var uuid = hash.digest('hex').slice(-32);
if (!uuid || typeof uuid !== 'string' || uuid.length !== 32) {
// This is critical to ensure we don't remove the wrong temp directory.
return end(new SudoPromptError('Expected a valid UUID.'));
}
end(undefined, uuid);
}
);
}
function ValidName(string) {
// We use 70 characters as a limit to side-step any issues with Unicode
// normalization form causing a 255 character string to exceed the fs limit.
if (!/^[a-z0-9 ]+$/i.test(string)) return false;
if (string.trim().length === 0) return false;
if (string.length > 70) return false;
return true;
}
function Windows(instance, callback) {
var temp = Node.os.tmpdir();
if (!temp) return callback(new SudoPromptError('os.tmpdir() not defined.'));
UUID(instance,
function(error, uuid) {
if (error) return callback(error);
instance.uuid = uuid;
instance.path = Node.path.join(temp, instance.uuid);
if (/"/.test(instance.path)) {
// We expect double quotes to be reserved on Windows.
// Even so, we test for this and abort if they are present.
return callback(
new SudoPromptError('instance.path cannot contain double-quotes.')
);
}
instance.pathElevate = Node.path.join(instance.path, 'elevate.vbs');
instance.pathExecute = Node.path.join(instance.path, 'execute.bat');
instance.pathCommand = Node.path.join(instance.path, 'command.bat');
instance.pathStdout = Node.path.join(instance.path, 'stdout');
instance.pathStderr = Node.path.join(instance.path, 'stderr');
instance.pathStatus = Node.path.join(instance.path, 'status');
Node.fs.mkdir(instance.path,
function(error) {
if (error) return callback(error);
function end(error, stdout, stderr) {
Remove(instance.path,
function(errorRemove) {
if (error) return callback(error);
if (errorRemove) return callback(errorRemove);
callback(undefined, stdout, stderr);
}
);
}
WindowsWriteExecuteScript(instance,
function(error) {
if (error) return end(error);
WindowsWriteCommandScript(instance,
function(error) {
if (error) return end(error);
WindowsElevate(instance,
function(error, stdout, stderr) {
if (error) return end(error, stdout, stderr);
WindowsWaitForStatus(instance,
function(error) {
if (error) return end(error);
WindowsResult(instance, end);
}
);
}
);
}
);
}
);
}
);
}
);
}
function WindowsElevate(instance, end) {
// We used to use this for executing elevate.vbs:
// var command = 'cscript.exe //NoLogo "' + instance.pathElevate + '"';
var command = [];
command.push('powershell.exe');
command.push('Start-Process');
command.push('-FilePath');
// Escape characters for cmd using double quotes:
// Escape characters for PowerShell using single quotes:
// Escape single quotes for PowerShell using backtick:
// See: https://ss64.com/ps/syntax-esc.html
command.push('"\'' + instance.pathExecute.replace(/'/g, "`'") + '\'"');
command.push('-WindowStyle hidden');
command.push('-Verb runAs');
command = command.join(' ');
var child = Node.child.exec(command, { encoding: 'utf-8' },
function(error, stdout, stderr) {
// We used to return PERMISSION_DENIED only for error messages containing
// the string 'canceled by the user'. However, Windows internationalizes
// error messages (issue 96) so now we must assume all errors here are
// permission errors. This seems reasonable, given that we already run the
// user's command in a subshell.
if (error) return end(new SudoPromptError(PERMISSION_DENIED), stdout, stderr);
end();
}
);
child.stdin.end(); // Otherwise PowerShell waits indefinitely on Windows 7.
}
function WindowsResult(instance, end) {
Node.fs.readFile(instance.pathStatus, 'utf-8',
function(error, code) {
if (error) return end(error);
Node.fs.readFile(instance.pathStdout, 'utf-8',
function(error, stdout) {
if (error) return end(error);
Node.fs.readFile(instance.pathStderr, 'utf-8',
function(error, stderr) {
if (error) return end(error);
code = parseInt(code.trim(), 10);
if (code === 0) {
end(undefined, stdout, stderr);
} else {
error = new SudoPromptError(
'Command failed: ' + instance.command + '\r\n' + stderr
);
error.code = code;
end(error, stdout, stderr);
}
}
);
}
);
}
);
}
function WindowsWaitForStatus(instance, end) {
// VBScript cannot wait for the elevated process to finish so we have to poll.
// VBScript cannot return error code if user does not grant permission.
// PowerShell can be used to elevate and wait on Windows 10.
// PowerShell can be used to elevate on Windows 7 but it cannot wait.
// powershell.exe Start-Process cmd.exe -Verb runAs -Wait
Node.fs.stat(instance.pathStatus,
function(error, stats) {
if ((error && error.code === 'ENOENT') || stats.size < 2) {
// Retry if file does not exist or is not finished writing.
// We expect a file size of 2. That should cover at least "0\r".
// We use a 1 second timeout to keep a light footprint for long-lived
// sudo-prompt processes.
setTimeout(
function() {
// If administrator has no password and user clicks Yes, then
// PowerShell returns no error and execute (and command) never runs.
// We check that command output has been redirected to stdout file:
Node.fs.stat(instance.pathStdout,
function(error) {
if (error) return end(new SudoPromptError(PERMISSION_DENIED));
WindowsWaitForStatus(instance, end);
}
);
},
1000
);
} else if (error) {
end(error);
} else {
end();
}
}
);
}
function WindowsWriteCommandScript(instance, end) {
var cwd = Node.process.cwd();
if (/"/.test(cwd)) {
// We expect double quotes to be reserved on Windows.
// Even so, we test for this and abort if they are present.
return end(new SudoPromptError('process.cwd() cannot contain double-quotes.'));
}
var script = [];
script.push('@echo off');
// Set code page to UTF-8:
script.push('chcp 65001>nul');
// Preserve current working directory:
// We pass /d as an option in case the cwd is on another drive (issue 70).
script.push('cd /d "' + cwd + '"');
// Export environment variables:
for (var key in instance.options.env) {
// "The characters <, >, |, &, ^ are special command shell characters, and
// they must be preceded by the escape character (^) or enclosed in
// quotation marks. If you use quotation marks to enclose a string that
// contains one of the special characters, the quotation marks are set as
// part of the environment variable value."
// In other words, Windows assigns everything that follows the equals sign
// to the value of the variable, whereas Unix systems ignore double quotes.
var value = instance.options.env[key];
script.push('set ' + key + '=' + value.replace(/([<>\\|&^])/g, '^$1'));
}
script.push(instance.command);
script = script.join('\r\n');
Node.fs.writeFile(instance.pathCommand, script, 'utf-8', end);
}
function WindowsWriteElevateScript(instance, end) {
// We do not use VBScript to elevate since it does not return an error if
// the user does not grant permission. This is here for reference.
// var script = [];
// script.push('Set objShell = CreateObject("Shell.Application")');
// script.push(
// 'objShell.ShellExecute "' + instance.pathExecute + '", "", "", "runas", 0'
// );
// script = script.join('\r\n');
// Node.fs.writeFile(instance.pathElevate, script, 'utf-8', end);
}
function WindowsWriteExecuteScript(instance, end) {
var script = [];
script.push('@echo off');
script.push(
'call "' + instance.pathCommand + '"' +
' > "' + instance.pathStdout + '" 2> "' + instance.pathStderr + '"'
);
script.push('(echo %ERRORLEVEL%) > "' + instance.pathStatus + '"');
script = script.join('\r\n');
Node.fs.writeFile(instance.pathExecute, script, 'utf-8', end);
}
module.exports.exec = Exec;
// We used to expect that applet.app would be included with this module.
// This could not be copied when sudo-prompt was packaged within an asar file.
// We now store applet.app as a zip file in base64 within index.js instead.
// To recreate: "zip -r ../applet.zip Contents" (with applet.app as CWD).
// The zip file must not include applet.app as the root directory so that we
// can extract it directly to the target app directory.
//
// To update the applet, follow these steps:
// * open main.scpt in macOS Script Editor and edit it as needed
// * select File | Export... (file format: Application)
// * replace the `applet` in `Contents/MacOS`
// * `zip -r ../applet.zip Contents`
// * base64 encode the zip file
// * replace the contents of the `APPLET` variable
var APPLET = 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var PERMISSION_DENIED = 'User did not grant permission.';
var NO_POLKIT_AGENT = 'No polkit authentication agent found.';
// See issue 66:
var MAX_BUFFER = 134217728;
Выполнить команду
Для локальной разработки. Не используйте в интернете!