74 lines
2.2 KiB
JavaScript
74 lines
2.2 KiB
JavaScript
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"use strict";
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exports = module.exports = sudo;
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var spawn = require('child_process').spawn;
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var read = require('read');
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var inpathSync = require('inpath').sync;
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var pidof = require('pidof');
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var path = process.env['PATH'].split(':');
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var sudoBin = inpathSync('sudo', path);
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var cachedPassword;
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var lastAnswer;
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function sudo(command, options) {
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var prompt = '#node-sudo-passwd#';
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var prompts = 0;
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var args = [ '-S', '-p', prompt ];
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args.push.apply(args, command);
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// The binary is the first non-dashed parameter to sudo
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var bin = command.filter(function (i) { return i.indexOf('-') !== 0; })[0];
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var options = options || {};
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var spawnOptions = options.spawnOptions || {};
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spawnOptions.stdio = 'pipe';
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var child = spawn(sudoBin, args, spawnOptions);
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// Wait for the sudo:d binary to start up
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function waitForStartup(err, pid) {
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if (err) {
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throw new Error('Couldn\'t start ' + bin);
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}
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if (pid || child.exitCode !== null) {
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child.emit('started');
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} else {
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setTimeout(function () {
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pidof(bin, waitForStartup);
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}, 100);
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}
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}
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pidof(bin, waitForStartup);
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// FIXME: Remove this handler when the child has successfully started
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child.stderr.on('data', function (data) {
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var lines = data.toString().trim().split('\n');
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lines.forEach(function (line) {
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if (line === prompt) {
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if (++prompts > 1) {
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// The previous entry must have been incorrect, since sudo asks again.
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cachedPassword = null;
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}
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if (options.cachePassword && cachedPassword) {
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child.stdin.write(cachedPassword + '\n');
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} else {
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read({ prompt: options.prompt || 'sudo requires your password: ', silent: true }, function (error, answer) {
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child.stdin.write(answer + '\n');
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if (options.cachePassword) {
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cachedPassword = answer;
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}
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});
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}
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}
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});
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});
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return child;
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}
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