mirror of https://github.com/keeweb/keeweb.git
28 lines
1.1 KiB
JavaScript
28 lines
1.1 KiB
JavaScript
'use strict';
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module.exports = function (grunt) {
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grunt.registerMultiTask('sign-archive', 'Signs archive with a private key', function () {
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var fs = require('fs');
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var crypto = require('crypto');
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var file = fs.readFileSync(this.options().file);
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var ix = file.toString('binary').lastIndexOf(this.options().signature);
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if (ix < 0) {
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grunt.warn('Signature placeholder not found');
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return;
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}
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var sign = crypto.createSign('RSA-SHA256');
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sign.write(file.slice(0, ix));
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sign.end();
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var privateKey = fs.readFileSync(this.options().privateKey, 'binary');
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var signature = new Buffer(sign.sign(privateKey).toString('hex'), 'binary');
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if (signature.byteLength !== new Buffer(this.options().signature, 'binary').byteLength) {
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grunt.warn('Bad signature length');
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return;
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}
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for (var i = 0; i < signature.byteLength; i++) {
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file[ix + i] = signature[i];
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}
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fs.writeFileSync(this.options().file, file);
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});
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};
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