JezK
Edit File: sshpk-sign
#!/usr/bin/env node // -*- mode: js -*- // vim: set filetype=javascript : // Copyright 2015 Joyent, Inc. All rights reserved. var dashdash = require('dashdash'); var sshpk = require('../lib/index'); var fs = require('fs'); var path = require('path'); var getPassword = require('getpass').getPass; var options = [ { names: ['hash', 'H'], type: 'string', help: 'Hash algorithm (sha1, sha256, sha384, sha512)' }, { names: ['verbose', 'v'], type: 'bool', help: 'Display verbose info about key and hash used' }, { names: ['identity', 'i'], type: 'string', help: 'Path to key to use' }, { names: ['file', 'f'], type: 'string', help: 'Input filename' }, { names: ['out', 'o'], type: 'string', help: 'Output filename' }, { names: ['format', 't'], type: 'string', help: 'Signature format (asn1, ssh, raw)' }, { names: ['binary', 'b'], type: 'bool', help: 'Output raw binary instead of base64' }, { names: ['help', 'h'], type: 'bool', help: 'Shows this help text' } ]; var parseOpts = {}; if (require.main === module) { var parser = dashdash.createParser({ options: options }); try { var opts = parser.parse(process.argv); } catch (e) { console.error('sshpk-sign: error: %s', e.message); process.exit(1); } if (opts.help || opts._args.length > 1) { var help = parser.help({}).trimRight(); console.error('sshpk-sign: sign data using an SSH key\n'); console.error(help); process.exit(1); } if (!opts.identity) { var help = parser.help({}).trimRight(); console.error('sshpk-sign: the -i or --identity option ' + 'is required\n'); console.error(help); process.exit(1); } var keyData = fs.readFileSync(opts.identity); parseOpts.filename = opts.identity; run(); } function run() { var key; try { key = sshpk.parsePrivateKey(keyData, 'auto', parseOpts); } catch (e) { if (e.name === 'KeyEncryptedError') { getPassword(function (err, pw) { parseOpts.passphrase = pw; run(); }); return; } console.error('sshpk-sign: error loading private key "' + opts.identity + '": ' + e.name + ': ' + e.message); process.exit(1); } var hash = opts.hash || key.defaultHashAlgorithm(); var signer; try { signer = key.createSign(hash); } catch (e) { console.error('sshpk-sign: error creating signer: ' + e.name + ': ' + e.message); process.exit(1); } if (opts.verbose) { console.error('sshpk-sign: using %s-%s with a %d bit key', key.type, hash, key.size); } var inFile = process.stdin; var inFileName = 'stdin'; var inFilePath; if (opts.file) { inFilePath = opts.file; } else if (opts._args.length === 1) { inFilePath = opts._args[0]; } if (inFilePath) inFileName = path.basename(inFilePath); try { if (inFilePath) { fs.accessSync(inFilePath, fs.R_OK); inFile = fs.createReadStream(inFilePath); } } catch (e) { console.error('sshpk-sign: error opening input file' + ': ' + e.name + ': ' + e.message); process.exit(1); } var outFile = process.stdout; try { if (opts.out && !opts.identify) { fs.accessSync(path.dirname(opts.out), fs.W_OK); outFile = fs.createWriteStream(opts.out); } } catch (e) { console.error('sshpk-sign: error opening output file' + ': ' + e.name + ': ' + e.message); process.exit(1); } inFile.pipe(signer); inFile.on('end', function () { var sig; try { sig = signer.sign(); } catch (e) { console.error('sshpk-sign: error signing data: ' + e.name + ': ' + e.message); process.exit(1); } var fmt = opts.format || 'asn1'; var output; try { output = sig.toBuffer(fmt); if (!opts.binary) output = output.toString('base64'); } catch (e) { console.error('sshpk-sign: error converting signature' + ' to ' + fmt + ' format: ' + e.name + ': ' + e.message); process.exit(1); } outFile.write(output); if (!opts.binary) outFile.write('\n'); outFile.once('drain', function () { process.exit(0); }); }); }