fix(netflow): сохранить IPv6 в смешанных шаблонах IPFIX

backend/src/services/traffic-flow-parse.ts

@@ -1,4 +1,4 @@
-import { canonicalIp } from "./traffic-flow-ip.js"
+import { canonicalIp, isUnspecifiedIp } from "./traffic-flow-ip.js"
 
 export interface ParsedFlow {
   src: string
@@ -99,7 +99,7 @@ function ipv4(buf: Buffer, offset: number): string {
 function usableIpfixIp(ip: string): boolean {
   const t = String(ip ?? "").trim()
   if (!t) return false
-  return t !== "0.0.0.0" && t.toLowerCase() !== "::" && t.toLowerCase() !== "::0"
+  return !isUnspecifiedIp(t)
 }
 
 function ipv6(buf: Buffer, offset: number): string {
@@ -238,16 +238,22 @@ function recordFromFields(
     const { data } = field
     switch (f.type) {
       case 8:
-        if (data.length === 4) src = ipv4(data, 0)
+        if (data.length === 4) {
+          const value = ipv4(data, 0)
+          if (usableIpfixIp(value) || !usableIpfixIp(src)) src = value
+        }
         break
       case 12:
-        if (data.length === 4) dst = ipv4(data, 0)
+        if (data.length === 4) {
+          const value = ipv4(data, 0)
+          if (usableIpfixIp(value) || !usableIpfixIp(dst)) dst = value
+        }
         break
       case 27:
-        if (data.length === 16 && !src) src = ipv6(data, 0)
+        if (data.length === 16 && !usableIpfixIp(src)) src = ipv6(data, 0)
         break
       case 28:
-        if (data.length === 16 && !dst) dst = ipv6(data, 0)
+        if (data.length === 16 && !usableIpfixIp(dst)) dst = ipv6(data, 0)
         break
       case 15:
         if (data.length === 4 && !nextHop) nextHop = ipv4(data, 0)