[6a3a178] | 1 | #!/usr/bin/env node
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| 2 | // -*- mode: js -*-
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| 3 | // vim: set filetype=javascript :
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| 4 | // Copyright 2015 Joyent, Inc. All rights reserved.
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| 5 |
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| 6 | var dashdash = require('dashdash');
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| 7 | var sshpk = require('../lib/index');
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| 8 | var fs = require('fs');
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| 9 | var path = require('path');
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| 10 | var Buffer = require('safer-buffer').Buffer;
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| 11 |
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| 12 | var options = [
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| 13 | {
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| 14 | names: ['hash', 'H'],
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| 15 | type: 'string',
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| 16 | help: 'Hash algorithm (sha1, sha256, sha384, sha512)'
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| 17 | },
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| 18 | {
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| 19 | names: ['verbose', 'v'],
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| 20 | type: 'bool',
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| 21 | help: 'Display verbose info about key and hash used'
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| 22 | },
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| 23 | {
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| 24 | names: ['identity', 'i'],
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| 25 | type: 'string',
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| 26 | help: 'Path to (public) key to use'
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| 27 | },
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| 28 | {
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| 29 | names: ['file', 'f'],
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| 30 | type: 'string',
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| 31 | help: 'Input filename'
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| 32 | },
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| 33 | {
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| 34 | names: ['format', 't'],
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| 35 | type: 'string',
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| 36 | help: 'Signature format (asn1, ssh, raw)'
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| 37 | },
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| 38 | {
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| 39 | names: ['signature', 's'],
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| 40 | type: 'string',
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| 41 | help: 'base64-encoded signature data'
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| 42 | },
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| 43 | {
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| 44 | names: ['help', 'h'],
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| 45 | type: 'bool',
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| 46 | help: 'Shows this help text'
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| 47 | }
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| 48 | ];
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| 49 |
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| 50 | if (require.main === module) {
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| 51 | var parser = dashdash.createParser({
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| 52 | options: options
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| 53 | });
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| 54 |
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| 55 | try {
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| 56 | var opts = parser.parse(process.argv);
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| 57 | } catch (e) {
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| 58 | console.error('sshpk-verify: error: %s', e.message);
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| 59 | process.exit(3);
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| 60 | }
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| 61 |
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| 62 | if (opts.help || opts._args.length > 1) {
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| 63 | var help = parser.help({}).trimRight();
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| 64 | console.error('sshpk-verify: sign data using an SSH key\n');
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| 65 | console.error(help);
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| 66 | process.exit(3);
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| 67 | }
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| 68 |
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| 69 | if (!opts.identity) {
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| 70 | var help = parser.help({}).trimRight();
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| 71 | console.error('sshpk-verify: the -i or --identity option ' +
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| 72 | 'is required\n');
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| 73 | console.error(help);
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| 74 | process.exit(3);
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| 75 | }
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| 76 |
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| 77 | if (!opts.signature) {
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| 78 | var help = parser.help({}).trimRight();
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| 79 | console.error('sshpk-verify: the -s or --signature option ' +
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| 80 | 'is required\n');
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| 81 | console.error(help);
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| 82 | process.exit(3);
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| 83 | }
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| 84 |
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| 85 | var keyData = fs.readFileSync(opts.identity);
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| 86 |
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| 87 | var key;
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| 88 | try {
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| 89 | key = sshpk.parseKey(keyData);
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| 90 | } catch (e) {
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| 91 | console.error('sshpk-verify: error loading key "' +
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| 92 | opts.identity + '": ' + e.name + ': ' + e.message);
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| 93 | process.exit(2);
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| 94 | }
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| 95 |
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| 96 | var fmt = opts.format || 'asn1';
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| 97 | var sigData = Buffer.from(opts.signature, 'base64');
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| 98 |
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| 99 | var sig;
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| 100 | try {
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| 101 | sig = sshpk.parseSignature(sigData, key.type, fmt);
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| 102 | } catch (e) {
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| 103 | console.error('sshpk-verify: error parsing signature: ' +
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| 104 | e.name + ': ' + e.message);
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| 105 | process.exit(2);
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| 106 | }
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| 107 |
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| 108 | var hash = opts.hash || key.defaultHashAlgorithm();
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| 109 |
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| 110 | var verifier;
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| 111 | try {
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| 112 | verifier = key.createVerify(hash);
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| 113 | } catch (e) {
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| 114 | console.error('sshpk-verify: error creating verifier: ' +
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| 115 | e.name + ': ' + e.message);
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| 116 | process.exit(2);
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| 117 | }
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| 118 |
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| 119 | if (opts.verbose) {
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| 120 | console.error('sshpk-verify: using %s-%s with a %d bit key',
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| 121 | key.type, hash, key.size);
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| 122 | }
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| 123 |
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| 124 | var inFile = process.stdin;
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| 125 | var inFileName = 'stdin';
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| 126 |
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| 127 | var inFilePath;
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| 128 | if (opts.file) {
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| 129 | inFilePath = opts.file;
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| 130 | } else if (opts._args.length === 1) {
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| 131 | inFilePath = opts._args[0];
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| 132 | }
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| 133 |
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| 134 | if (inFilePath)
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| 135 | inFileName = path.basename(inFilePath);
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| 136 |
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| 137 | try {
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| 138 | if (inFilePath) {
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| 139 | fs.accessSync(inFilePath, fs.R_OK);
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| 140 | inFile = fs.createReadStream(inFilePath);
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| 141 | }
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| 142 | } catch (e) {
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| 143 | console.error('sshpk-verify: error opening input file' +
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| 144 | ': ' + e.name + ': ' + e.message);
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| 145 | process.exit(2);
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| 146 | }
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| 147 |
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| 148 | inFile.pipe(verifier);
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| 149 | inFile.on('end', function () {
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| 150 | var ret;
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| 151 | try {
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| 152 | ret = verifier.verify(sig);
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| 153 | } catch (e) {
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| 154 | console.error('sshpk-verify: error verifying data: ' +
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| 155 | e.name + ': ' + e.message);
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| 156 | process.exit(1);
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| 157 | }
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| 158 |
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| 159 | if (ret) {
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| 160 | console.error('OK');
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| 161 | process.exit(0);
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| 162 | }
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| 163 |
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| 164 | console.error('NOT OK');
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| 165 | process.exit(1);
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| 166 | });
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| 167 | }
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