Merge pull request node-pcap#1 from king-jam/lldp

Additional files/formats added

Author: hanasu

decode/lldp.js

@@ -16,7 +16,7 @@ LLDP.prototype.decode = function (raw_packet, offset) {
 	this.ttlTLV = new TLV(this.emitter).decode (raw_packet, offset);
 	offset += getTlvLength(raw_packet, offset);
 	while(raw_packet.readUInt16BE(offset, true) != 0) {
-		this.optionalTlv.push(new TLV(this.emitter).decode (raw_packet, offset));
+		this.push(new TLV(this.emitter).decode (raw_packet, offset));
 		offset += getTlvLength(raw_packet, offset);
   }
 

decode/lldp/lldp_tlv.js

@@ -16,7 +16,7 @@ TLV.prototype.decode = function (raw_packet, offset) {
   if(TlvDecoder == undefined) {
     this.payload = "Unknown";
   } else {
-    this.payload = new TlvDecoder().decode(raw_packet, offset, tlvLength);
+    this.payload = new TlvDecoder().decode(raw_packet, offset+2);
   }
   return this;
 }

decode/lldp/organization.js

@@ -0,0 +1,22 @@
+var orgs = require("./oui/oui_types");
+
+function ORG() {
+	this.orgId = undefined;
+  this.payload = undefined;
+}
+
+ORG.prototype.decode = function (raw_packet, offset) {
+  // https://en.wikipedia.org/wiki/Type-length-value
+  // https://en.wikipedia.org/wiki/Link_Layer_Discovery_Protocol
+  this.orgId = ((raw_packet.readUInt16BE(offset, true) << 8) || (raw_packet.readUInt16BE(offset+2, true) & 0xff00 >> 8));
+  var OrgDecoder = orgs[this.orgId];
+  if(OrgDecoder == undefined) {
+    this.payload = "Unknown";
+  } else {
+    this.payload = new OrgDecoder().decode(raw_packet, offset+3);
+  }
+
+  return this;
+}
+
+module.exports = ORG;

decode/lldp/oui/8021_private.js

@@ -0,0 +1,20 @@
+function IEEE_8021_PRIVATE() {
+	this.orgSubType = undefined;
+  this.payload = undefined;
+}
+
+IEEE_8021_PRIVATE.prototype.decode = function (raw_packet, offset) {
+  // https://en.wikipedia.org/wiki/Type-length-value
+  // https://en.wikipedia.org/wiki/Link_Layer_Discovery_Protocol
+  this.orgSubType = (raw_packet.readUInt16BE(offset, true) & 0x00ff);
+  var OrgDecoder = orgs[this.orgId];
+  if(OrgDecoder == undefined) {
+    this.payload = "Unknown";
+  } else {
+    this.payload = new OrgDecoder().decode(raw_packet, offset+3);
+  }
+
+  return this;
+}
+
+module.exports = IEEE_8021_PRIVATE;

decode/lldp/oui/oui_types.js

@@ -0,0 +1,13 @@
+var ouis = {};
+
+module.exports = oui_types;
+
+var oui_ieee_8021_private = 0x0080c2;
+var oui_ieee_8023_private = 0x00120f;
+
+function init(){
+  ouis[oui_ieee_8021_private] = require("./8021_private");
+  //ouis[oui_ieee_8023_private] = require("./8023_private");
+  ouis[oui_ieee_8023_private] = undefined;
+}
+init();