source: trip-planner-front/node_modules/sshpk/bin/sshpk-sign@ 6a3a178

#!/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);
                });
        });
}