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#!/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 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 (public) key to use'
},
{
names: ['file', 'f'],
type: 'string',
help: 'Input filename'
},
{
names: ['format', 't'],
type: 'string',
help: 'Signature format (asn1, ssh, raw)'
},
{
names: ['signature', 's'],
type: 'string',
help: 'base64-encoded signature data'
},
{
names: ['help', 'h'],
type: 'bool',
help: 'Shows this help text'
}
];
if (require.main === module) {
var parser = dashdash.createParser({
options: options
});
try {
var opts = parser.parse(process.argv);
} catch (e) {
console.error('sshpk-verify: error: %s', e.message);
process.exit(3);
}
if (opts.help || opts._args.length > 1) {
var help = parser.help({}).trimRight();
console.error('sshpk-verify: sign data using an SSH key\n');
console.error(help);
process.exit(3);
}
if (!opts.identity) {
var help = parser.help({}).trimRight();
console.error('sshpk-verify: the -i or --identity option ' +
'is required\n');
console.error(help);
process.exit(3);
}
if (!opts.signature) {
var help = parser.help({}).trimRight();
console.error('sshpk-verify: the -s or --signature option ' +
'is required\n');
console.error(help);
process.exit(3);
}
var keyData = fs.readFileSync(opts.identity);
var key;
try {
key = sshpk.parseKey(keyData);
} catch (e) {
console.error('sshpk-verify: error loading key "' +
opts.identity + '": ' + e.name + ': ' + e.message);
process.exit(2);
}
var fmt = opts.format || 'asn1';
var sigData = new Buffer(opts.signature, 'base64');
var sig;
try {
sig = sshpk.parseSignature(sigData, key.type, fmt);
} catch (e) {
console.error('sshpk-verify: error parsing signature: ' +
e.name + ': ' + e.message);
process.exit(2);
}
var hash = opts.hash || key.defaultHashAlgorithm();
var verifier;
try {
verifier = key.createVerify(hash);
} catch (e) {
console.error('sshpk-verify: error creating verifier: ' +
e.name + ': ' + e.message);
process.exit(2);
}
if (opts.verbose) {
console.error('sshpk-verify: 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-verify: error opening input file' +
': ' + e.name + ': ' + e.message);
process.exit(2);
}
inFile.pipe(verifier);
inFile.on('end', function () {
var ret;
try {
ret = verifier.verify(sig);
} catch (e) {
console.error('sshpk-verify: error verifying data: ' +
e.name + ': ' + e.message);
process.exit(1);
}
if (ret) {
console.error('OK');
process.exit(0);
}
console.error('NOT OK');
process.exit(1);
});
}
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