README.md

@@ -51,8 +51,7 @@ Variable|Description|Default
 -|-|-
 `INTERFACE`*        | Wireguard-Interface Name                  |
 `IPV6_FORMAT`       | Format to use for converting v4 to v6 <br> The CIDR-Mask gets translated using 128 - 24 - Mask <br> e.g. `10.0.100.5/16` -> `fc12::0a00:6405/96`   | `fc12::%02x%02x:%02x%02x/%d`
-`FILTER_PREFIX`     | Prefix to filter for IP-Networks          | `100.100`
+`RECHECK_INTERVAL`  | Interval in seconds to recheck AllowedIPs entries in case something changed  | 300
-`RECHECK_INTERVAL`  | Interval in go-time-format to recheck AllowedIPs entries in case something changed  | 5m
 
 *\* Required*
 

build/Dockerfile

@@ -1,13 +0,0 @@
-# ---- Build ----
-FROM golang:1.19-alpine AS build
-WORKDIR /build
-# Copy sources
-ADD . .
-# Get dependencies
-RUN go get ./cmd/app
-# Compile
-RUN CGO_ENABLED=0 go build -a -o app ./cmd/app
-
-# ---- Output ----
-FROM scratch AS export-stage
-COPY --from=build /build/app .

build/build-multiarch.sh

@@ -1,9 +0,0 @@
-PLATFORM="linux/amd64,linux/arm64/v8,linux/arm/v7"
-EXTRA_ARGS="$@"
-
-docker buildx build \
-    --platform $PLATFORM \
-    -f $(dirname $0)/Dockerfile \
-    --output out \
-    $EXTRA_ARGS \
-    .

build/build-ownarch.sh

@@ -1,7 +0,0 @@
-EXTRA_ARGS="$@"
-
-docker build \
-    -f $(dirname $0)/Dockerfile \
-    --output out \
-    $EXTRA_ARGS \
-    .

cmd/app/main.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net"
 	"os"
+	"strconv"
 	"time"
 
 	envChecks "git.ruekov.eu/ruakij/routingtabletowg/lib/environmentchecks"
@@ -20,7 +21,7 @@ var envRequired = []string{
 var envDefaults = map[string]string{
     "IPV6_FORMAT": "fc12::%02x%02x:%02x%02x/%d",
     "FILTER_PREFIX": "100.100",
-    "RECHECK_INTERVAL": "5m",
+    "RECHECK_INTERVAL": "300",
 }
 
 func main() {
@@ -48,47 +49,36 @@ func main() {
     filterPrefix := os.Getenv("FILTER_PREFIX")
 
     checkIntervalStr := os.Getenv("RECHECK_INTERVAL")
-    checkInterval, err := time.ParseDuration(checkIntervalStr)
+    checkIntervalSec, err := strconv.Atoi(checkIntervalStr)
 	if err != nil {
-		logger.Error.Fatalf("Couldn't parse RECHECK_INTERVAL '%s': %s", checkIntervalStr, err)
+		logger.Error.Fatalf("Couldn't read RECHECK_INTERVAL '%s': %s", checkIntervalStr, err)
 	}
+    checkInterval := time.Second * time.Duration(checkIntervalSec)
 
     // Get the IPv4 address of the interface
     addrs, err := netlink.AddrList(netInterface, netlink.FAMILY_V4)
     if err != nil {
         logger.Error.Fatal(err)
     }
-    processedCount := 0
+    if(len(addrs) == 0){
-    filteredCount := 0
+        logger.Error.Fatal("Interface doesnt have IPv4-Adresses")
-    for _, addr := range addrs {
-        // Check filter
-        if addr.String()[:len(filterPrefix)] != filterPrefix {
-            filteredCount++
-            continue
-        }
-
-        // Add the IPv6 address to the interface
-        ipv6Str := *convertIPv4ToIPv6(&ipv6Format, addr.IPNet)
-        ipv6, err := netlink.ParseAddr(ipv6Str)
-        if err != nil {
-            logger.Warn.Printf("failed parsing converted %s -> %s : %s", addr.IPNet.String(), ipv6Str, err)
-            continue
-        }
-
-        logger.Info.Printf("Adding converted %s -> %s to interface", addr.IPNet.String(), ipv6Str)
-        err = netlink.AddrAdd(netInterface, ipv6)
-        if err != nil {
-            switch {
-            case os.IsExist(err):
-                logger.Warn.Println("Address is already set on interface")
-            default:
-                logger.Warn.Printf("Failed to set address on interface: %v", err)
-            }
-        }
-        processedCount++
     }
-    if(processedCount != len(addrs)) {
+
-        logger.Warn.Printf("Not all Interface-Addresses were processed. Summary: %d processed, %d filtered, %d failed", processedCount, filteredCount, len(addrs)-processedCount-filteredCount)
+    // Add the IPv6 address to the interface
+    ipv6Str := *convertIPv4ToIPv6(&ipv6Format, addrs[0].IPNet)
+    ipv6, err := netlink.ParseAddr(ipv6Str)
+    if err != nil {
+        logger.Error.Fatal(err)
+    }
+    logger.Info.Printf("Adding converted %s -> %s to interface", addrs[0].IPNet.String(), ipv6Str)
+    err = netlink.AddrAdd(netInterface, ipv6)
+    if err != nil {
+        switch {
+        case os.IsExist(err):
+            logger.Warn.Println("Address is already set on interface")
+        default:
+            logger.Error.Fatalf("Failed to set address on interface: %v", err)
+        }
     }
 
     // Create a WireGuard client