test

.gitea/workflows/release.yml

@@ -0,0 +1,124 @@
+# Git(tea) Actions workflow: Build and publish standalone binaries **plus** bundled `static/` assets
+# ────────────────────────────────────────────────────────────────────
+#  ✧  Builds the Go‑based WoL server for four targets **and** packt das Verzeichnis
+#      `static` zusammen mit der Binary, sodass es relativ zur ausführbaren Datei
+#      liegt (wichtig für die eingebauten Bootstrap‑Assets & favicon).
+#
+#       • linux/amd64    → wol-server-linux-amd64.tar.gz
+#       • linux/arm64    → wol-server-linux-arm64.tar.gz
+#       • linux/arm/v7   → wol-server-linux-armv7.tar.gz
+#       • windows/amd64  → wol-server-windows-amd64.zip
+#
+#  ✧  Artefakte landen im Workflow und – bei Tag‑Push (vX.Y.Z) – als Release‑Assets.
+#
+#  Secrets/variables:
+#    GITEA_TOKEN – optional, falls default token keine Release‑Rechte hat.
+# ────────────────────────────────────────────────────────────────────
+
+name: build-binaries
+
+on:
+  push:
+    branches: [ "main" ]
+    tags:     [ "v*" ]
+
+jobs:
+  build:
+    if: startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-fast
+
+    strategy:
+      matrix:
+        include:
+          - goos: linux
+            goarch: amd64
+            ext: ""
+          - goos: linux
+            goarch: arm64
+            ext: ""
+          - goos: linux
+            goarch: arm
+            goarm: "7"
+            ext: ""
+          - goos: windows
+            goarch: amd64
+            ext: ".exe"
+
+    env:
+      GO_VERSION: "1.25"
+      BINARY_NAME: duidreader
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v3
+
+      - name: Set up Go ${{ env.GO_VERSION }}
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+          cache: true
+
+      - name: Build ${{ matrix.goos }}/${{ matrix.goarch }}${{ matrix.goarm && format('/v{0}', matrix.goarm) || '' }}
+        shell: bash
+        run: |
+          set -e
+          mkdir -p dist/package
+          if [ -n "${{ matrix.goarm }}" ]; then export GOARM=${{ matrix.goarm }}; fi
+          CGO_ENABLED=0 GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }} go build -trimpath -ldflags "-s -w" \
+            -o "dist/package/${BINARY_NAME}${{ matrix.ext }}" .
+          # Assets: statisches Verzeichnis beilegen
+          # cp -r static dist/package/
+
+      - name: Package archive with static assets
+        shell: bash
+        run: |
+          set -e
+          cd dist
+          if [ "${{ matrix.goos }}" == "windows" ]; then
+            ZIP_NAME="${BINARY_NAME}-windows-amd64.zip"
+            (cd package && zip -r "../$ZIP_NAME" .)
+          else
+            ARCH_SUFFIX="${{ matrix.goarch }}"
+            if [ "${{ matrix.goarch }}" == "arm" ]; then ARCH_SUFFIX="armv${{ matrix.goarm }}"; fi
+            TAR_NAME="${BINARY_NAME}-${{ matrix.goos }}-${ARCH_SUFFIX}.tar.gz"
+            tar -czf "$TAR_NAME" -C package .
+          fi
+
+      - name: Upload workflow artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ matrix.goos }}-${{ matrix.goarch }}${{ matrix.goarm && format('v{0}', matrix.goarm) || '' }}
+          path: dist/*.tar.gz
+          if-no-files-found: ignore
+      - uses: actions/upload-artifact@v3
+        with:
+          name: windows-amd64
+          path: dist/*.zip
+          if-no-files-found: ignore
+
+  # Release Schritt für Tag‑Pushes
+  release:
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: build
+    runs-on: ubuntu-fast
+    permissions:
+      contents: write
+
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v3
+        with:
+          path: ./dist
+
+      - name: Create / Update release
+        uses: softprops/action-gh-release@v2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITEA_TOKEN || github.token }}
+        with:
+          name: "Release ${{ github.ref_name }}"
+          tag_name: ${{ github.ref_name }}
+          draft: false
+          prerelease: false
+          files: |
+            dist/**/duidreader-*.tar.gz
+            dist/**/duidreader-*.zip

README.md

@@ -1,2 +1 @@
 # duidreader
-

go.mod

@@ -0,0 +1,5 @@
+module git.send.nrw/sendnrw/duidreader
+
+go 1.25.3
+
+require golang.org/x/sys v0.33.0

go.sum

@@ -0,0 +1,2 @@
+golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
+golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=

main.go

@@ -0,0 +1,307 @@
+// client.go
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/binary"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/fs"
+	"net/http"
+	"os"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"golang.org/x/sys/windows/registry"
+)
+
+type iaidInfo struct {
+	Source string // Pfad oder Registry-Key
+	IAID   uint32
+}
+
+// ---------- Linux ----------
+var (
+	reDhclientIAID = regexp.MustCompile(`\biaid\s+(\d+);`) // dhclient, NM
+	reKVIAID       = regexp.MustCompile(`^IAID=(\d+)`)     // systemd-networkd
+)
+
+func iaidsLinux() ([]iaidInfo, error) {
+	candidates := []string{
+		"/var/lib/NetworkManager",
+		"/var/lib/dhclient",         // manche Distros
+		"/run/systemd/netif/leases", // systemd-networkd
+		"/var/lib/dhcpcd", "/var/lib/dhcpcd5",
+	}
+
+	var out []iaidInfo
+
+	visit := func(path string, d fs.DirEntry, err error) error {
+		if err != nil || d.IsDir() {
+			return nil
+		}
+		f, err := os.Open(path)
+		if err != nil {
+			return nil
+		}
+		defer f.Close()
+
+		sc := bufio.NewScanner(f)
+		for sc.Scan() {
+			line := sc.Text()
+
+			if m := reDhclientIAID.FindStringSubmatch(line); len(m) == 2 {
+				if v, _ := strconv.ParseUint(m[1], 10, 32); v != 0 {
+					out = append(out, iaidInfo{path, uint32(v)})
+					break
+				}
+			}
+			if m := reKVIAID.FindStringSubmatch(line); len(m) == 2 {
+				if v, _ := strconv.ParseUint(m[1], 10, 32); v != 0 {
+					out = append(out, iaidInfo{path, uint32(v)})
+					break
+				}
+			}
+		}
+		return nil
+	}
+
+	for _, dir := range candidates {
+		_ = filepath.WalkDir(dir, visit)
+	}
+	if len(out) == 0 {
+		return nil, fmt.Errorf("keine IAID-Datei gefunden (root-Rechte?)")
+	}
+	return out, nil
+}
+
+// ---------- Windows ----------
+/*func iaidsWindows() ([]iaidInfo, error) {
+	base := `SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\Interfaces`
+	root, err := registry.OpenKey(registry.LOCAL_MACHINE, base, registry.READ)
+	if err != nil {
+		return nil, err
+	}
+	defer root.Close()
+
+	names, _ := root.ReadSubKeyNames(-1)
+	var out []iaidInfo
+
+	for _, n := range names {
+		k, err := registry.OpenKey(root, n, registry.READ)
+		if err != nil {
+			continue
+		}
+		val, _, err := k.GetIntegerValue("IAID")
+		k.Close()
+		if err == nil {
+			out = append(out, iaidInfo{
+				Source: base + `\` + n + `\IAID`,
+				IAID:   uint32(val),
+			})
+		}
+	}
+	if len(out) == 0 {
+		return nil, fmt.Errorf("kein IAID-Wert in der Registry")
+	}
+	return out, nil
+}*/
+
+func iaidsWindows() ([]iaidInfo, error) {
+	const base = `SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\Interfaces`
+
+	root, err := registry.OpenKey(registry.LOCAL_MACHINE, base, registry.READ)
+	if err != nil {
+		return nil, err
+	}
+	defer root.Close()
+
+	var out []iaidInfo
+
+	guidKeys, _ := root.ReadSubKeyNames(-1)
+	for _, g := range guidKeys {
+		k, err := registry.OpenKey(root, g, registry.READ)
+		if err != nil {
+			continue
+		}
+
+		if v, _, err := k.GetIntegerValue("Dhcpv6Iaid"); err == nil {
+			out = append(out, iaidInfo{Source: base + `\` + g, IAID: uint32(v)})
+			k.Close()
+			continue
+		}
+
+		// --- Fallback: MAC → IAID (letzte 3 Bytes), falls DWORD fehlt ---
+		if mac, _, err := k.GetBinaryValue("NetworkAddress"); err == nil && len(mac) >= 6 {
+			iaid := uint32(mac[3])<<16 | uint32(mac[4])<<8 | uint32(mac[5])
+			out = append(out, iaidInfo{Source: base + `\` + g + " (computed)", IAID: iaid})
+		}
+		k.Close()
+	}
+	if len(out) == 0 {
+		return nil, fmt.Errorf("weder Dhcpv6Iaid noch MAC-basierten Fallback gefunden - nutzt der Client überhaupt DHCPv6?")
+	}
+	return out, nil
+}
+
+// ---------- Fallback: IAID selbst ableiten (MAC → 3 Byte) ----------
+func iaidFromMAC(mac []byte, ifindex int) uint32 {
+	if len(mac) >= 3 {
+		return binary.BigEndian.Uint32([]byte{0, mac[len(mac)-3], mac[len(mac)-2], mac[len(mac)-1]})
+	}
+	// Notlösung: Interface-Index + 0xA0 im obersten Byte
+	return uint32(0xA0000000 | (ifindex & 0x00FFFFFF))
+}
+
+/*######################################################################################################*/
+/*######################################################################################################*/
+/*######################################################################################################*/
+/*######################################################################################################*/
+/*######################################################################################################*/
+
+// ---------- Datentyp, der an den Server geschickt wird ----------
+type payload struct {
+	Hostname string   `json:"hostname"`
+	DUIDs    []string `json:"duids"` // hex-codiert
+	IAIDs    []uint32
+}
+
+// ---------- Linux ----------
+func duidsLinux() ([][]byte, error) {
+	candidates := []string{
+		"/var/lib/NetworkManager",
+		"/var/lib/dhcp",
+		"/var/lib/systemd/network",
+		"/run/systemd/netif/leases",
+	}
+	var out [][]byte
+	for _, dir := range candidates {
+		_ = filepath.WalkDir(dir, func(path string, d fs.DirEntry, err error) error {
+			if err != nil || d.IsDir() {
+				return nil
+			}
+			buf, err := os.ReadFile(path)
+			if err != nil {
+				return nil
+			}
+			if duid := extractDUID(buf); len(duid) > 0 {
+				out = append(out, duid)
+			}
+			return nil
+		})
+	}
+	if len(out) == 0 {
+		return nil, errors.New("keine DUID gefunden")
+	}
+	return out, nil
+}
+
+// ---------- Windows ----------
+func duidsWindows() ([][]byte, error) {
+	k, err := registry.OpenKey(registry.LOCAL_MACHINE,
+		`SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters`,
+		registry.READ)
+	if err != nil {
+		return nil, err
+	}
+	defer k.Close()
+
+	val, _, err := k.GetBinaryValue("Dhcpv6DUID")
+	if err != nil {
+		return nil, err
+	}
+	return [][]byte{val}, nil
+}
+
+// ---------- Hilfsfunktionen ----------
+func extractDUID(b []byte) []byte {
+	if idx := bytes.Index(b, []byte("default-duid")); idx >= 0 {
+		start := bytes.IndexByte(b[idx:], '"') + idx + 1
+		end := bytes.IndexByte(b[start:], '"') + start
+		hexEsc := bytes.ReplaceAll(b[start:end], []byte(`\x`), nil)
+		duid, _ := hex.DecodeString(string(hexEsc))
+		return duid
+	}
+	hexOnly := strings.TrimSpace(string(b))
+	if len(hexOnly) >= 28 && allHex(hexOnly) { // plausibel?
+		duid, _ := hex.DecodeString(hexOnly)
+		return duid
+	}
+	return nil
+}
+func allHex(s string) bool {
+	for _, c := range s {
+		if !strings.ContainsRune("0123456789abcdefABCDEF", c) {
+			return false
+		}
+	}
+	return true
+}
+
+// ---------- main ----------
+func main() {
+	var raw [][]byte
+	var all []iaidInfo
+	var err error
+	var err1 error
+	switch runtime.GOOS {
+	case "windows":
+		raw, err = duidsWindows()
+		all, err1 = iaidsWindows()
+	default:
+		raw, err = duidsLinux()
+		all, err1 = iaidsLinux()
+	}
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+	}
+
+	if err1 != nil {
+		fmt.Fprintln(os.Stderr, err1)
+	}
+
+	for _, ia := range all {
+		fmt.Printf("%-60s 0x%08x (%d)\n", ia.Source, ia.IAID, ia.IAID)
+	}
+
+	var gh []uint32
+
+	for _, bh := range all {
+		gh = append(gh, bh.IAID)
+	}
+
+	host, _ := os.Hostname()
+	//host := "PC1020"
+	p := payload{
+		Hostname: host,
+		DUIDs:    make([]string, len(raw)),
+		IAIDs:    gh,
+	}
+	for i, d := range raw {
+		p.DUIDs[i] = hex.EncodeToString(d)
+	}
+
+	// --- JSON kodieren ---
+	body, _ := json.Marshal(p)
+
+	// --- HTTP senden ---
+	url := "https://client-ipv6.stadt-hilden.de/register" // <-- ggf. anpassen
+	req, _ := http.NewRequest(http.MethodPost, url, bytes.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{Timeout: 5 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "HTTP-Fehler:", err)
+		os.Exit(1)
+	}
+	defer resp.Body.Close()
+	fmt.Println("Server-Antwort:", resp.Status)
+}