63 行
1.6 KiB
JavaScript
可执行文件
63 行
1.6 KiB
JavaScript
可执行文件
#!/usr/bin/env node
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'use strict';
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// EXAMPLE:
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// node bin/dns-parse.js samples/a-0.mdns.bin
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var path = require('path');
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// pass a terminal arg
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var filename = process.argv[2];
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var outname = process.argv[3];
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if (!filename) {
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console.error("Usage: node bin/dns-pack.js <path/to/sample.json> <path/to/output.bin>");
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console.error("Example: node bin/dns-pack.js ./samples/services-0.mdns.json ./services-0.mdns.bin");
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process.exit(1);
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return;
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}
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if (!outname) {
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console.warn('');
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console.warn(
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"Usage: node bin/dns-pack.js '" + filename + "' './" + path.basename(filename).replace(path.extname(filename), '') + ".bin'"
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);
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console.warn('');
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}
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var PromiseA = require('bluebird');
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var fs = PromiseA.promisifyAll(require('fs'));
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var dnsjs = require('../').DNSPacket;
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fs.readFileAsync(filename, null).then(function (nb) {
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//
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// current reference impl
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//
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//console.log(require('native-dns-packet').parse(nb));
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//
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// other reference impl
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//
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//console.log(require('dns-js').DNSPacket.parse(nb));
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// nb is a Uint8Array (ArrayBufferView) for nb.buffer
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// nb.buffer is the actual ArrayBuffer
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//var ab = nb.buffer.slice(nb.byteOffset, nb.byteOffset + nb.byteLength);
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var packet = dnsjs.write(JSON.parse(nb.toString('ascii')));
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//console.log('[packet]', nb.byteLength, 'bytes:');
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//console.log(JSON.stringify(packet, null, 2));
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//TODO hexdump packet
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var hexdump = require('hexdump.js').hexdump;
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var str = hexdump(packet);
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console.log(str);
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if (outname) {
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fs.writeFileSync(outname, packet, null);
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console.log('');
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console.log("wrote '" + outname + "'");
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}
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});
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