djgn

src/node.c

@@ -9,8 +9,40 @@ packet listen_for_packets(){
 
 // We need to make sure the TLV announces a length that will no go onto
 // another tlv, as we might end up reading bullshit.
-int validate_tlvs(union tlv tlv_to_validate){
+int validate_tlv(unsigned char *data, int pos){
+    switch(data[pos]) {
+        case 0:
+            break;
+        case 1:
+            break;
+        case 2:
+            if(data[pos+1] != 0) return 0;
+            break;
+        case 3:
+            if(data[pos+1] != 18) return 0;
+            break;
+        case 4:
+            if(data[pos+1] != 16) return 0;
+            break;
+        case 5:
+            if(data[pos+1] != 0) return 0;
+            break;
+        case 6:
+            if(data[pos+1] != 26) return 0;
+            break;
+        case 7:
+            if(data[pos+1] != 8) return 0;
+            break;
+        case 8:
+            if(data[pos+1] < 26 || data[pos+1] > 218) return 0;
+            break;
+        case 9:
+            break;
+        default:
+            return 0;
+    }
 
+    return 1;
 }
 
 void work_with_tlvs(struct tlvs_list receivied_tlvs){

src/node.h

@@ -46,7 +46,7 @@ void update_neighbours();
 
 void work_with_tlvs();
 
-int validate_tlvs();
+int validate_tlv(unsigned char *data, int pos);
 
 // threaded functions