node-beaglebone-usbboot
Version:
Transforms BeagleBone to mass storage device
64 lines • 2.01 kB
JavaScript
;
/* tslint:disable */
Object.defineProperty(exports, "__esModule", { value: true });
const util_1 = require("./util");
const bp = require('binary-parser-encoder'); // Binary parser module
const Parser = bp.Parser;
const sp = require('schemapack');
// ARP header for response
const arphdr_e = sp.build([
{ htype: 'uint16' },
{ ptype: 'uint16' },
{ hlen: 'uint8' },
{ plen: 'uint8' },
{ opcode: 'uint16' },
{ hw_source: { 0: 'uint8', 1: 'uint8', 2: 'uint8', 3: 'uint8', 4: 'uint8', 5: 'uint8' } },
{ ip_source: { 0: 'uint8', 1: 'uint8', 2: 'uint8', 3: 'uint8' } },
{ hw_dest: { 0: 'uint8', 1: 'uint8', 2: 'uint8', 3: 'uint8', 4: 'uint8', 5: 'uint8' } },
{ ip_dest: { 0: 'uint8', 1: 'uint8', 2: 'uint8', 3: 'uint8' } },
{ pad: 'string' },
]);
class ARP {
parseARP(buff) {
const arphdr = new Parser()
.uint16be('htype')
.uint16be('ptype')
.uint8('hlen')
.uint8('plen')
.uint16be('opcode')
.array('hw_source', {
length: 6,
type: 'uint8',
})
.array('ip_source', {
length: 4,
type: 'uint8',
})
.array('hw_dest', {
length: 6,
type: 'uint8',
})
.array('ip_dest', {
length: 4,
type: 'uint8',
});
return arphdr.parse(buff);
}
// Function for ARP response
makeARP(opcode, hw_source, ip_source, hw_dest, ip_dest) {
const arp = [
{ htype: 1 },
{ ptype: 0x0800 },
{ hlen: 6 },
{ plen: 4 },
{ opcode: opcode },
{ hw_source: hw_source },
{ ip_source: ip_source },
{ hw_dest: hw_dest },
{ ip_dest: ip_dest },
];
return util_1.fixBuff(arphdr_e.encode(arp));
}
}
exports.ARP = ARP;
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