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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