77 lines
1.9 KiB
JavaScript
Executable File
77 lines
1.9 KiB
JavaScript
Executable File
#!/usr/bin/env node
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'use strict';
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var fs = require('fs');
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var infile = process.argv[2];
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var pem = fs.readFileSync(infile, 'ascii');
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var b64 = pem.split(/\n/).filter(function (line) {
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// TODO test if RSA key
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if (/^---/.test(line)) {
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return false;
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}
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return true;
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}).join('');
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var buf = Buffer.from(b64, 'base64');
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var ELOOP = "uASN1.js Error: iterated over 100+ elements (probably a malformed file)";
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var EDEEP = "uASN1.js Error: element nested 100+ layers deep (probably a malformed file)";
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var ASN1 = require('../lib/uasn1.js');
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/*
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function ASN1(buf, depth) {
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if (depth >= 100) {
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throw new Error(EDEEP);
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}
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// start after type (0) and lengthSize (1)
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var index = 2;
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var asn1 = {
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type: buf[0]
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, lengthSize: 0
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, length: buf[1]
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};
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var child;
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var i = 0;
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if (0x80 & asn1.length) {
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asn1.lengthSize = 0x7f & asn1.length;
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// I think that buf->hex->int solves the problem of Endianness... not sure
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asn1.length = parseInt(buf.slice(index, index + asn1.lengthSize).toString('hex'), 16);
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// add back the original byte indicating lengthSize
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index += 1;
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}
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// this is a primitive value type
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if (asn1.type <= 0x06) {
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i += 1;
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asn1.value = buf.slice(index, index + asn1.length);
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return asn1;
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}
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asn1.children = [];
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while (i < 100 && index < buf.byteLength) {
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child = ASN1(buf.slice(index), (depth || 0) + 1);
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index += (2 + child.lengthSize + child.length);
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asn1.children.push(child);
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}
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if (i >= 100) { throw new Error(ELOOP); }
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return asn1;
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}
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*/
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var asn1 = ASN1.parse(buf);
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var ws = '';
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function write(asn1) {
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console.log(ws, 'ch', Buffer.from([asn1.type]).toString('hex'), asn1.length);
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if (!asn1.children) {
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return;
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}
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asn1.children.forEach(function (a, i) {
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ws += '\t';
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write(a);
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ws = ws.slice(1);
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});
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}
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console.log(JSON.stringify(asn1, null, 2));
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//console.log(asn1);
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write(asn1);
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