init
This commit is contained in:
51
.gitea/workflows/release.yml
Normal file
51
.gitea/workflows/release.yml
Normal file
@@ -0,0 +1,51 @@
|
||||
name: release-tag
|
||||
on:
|
||||
push:
|
||||
branches:
|
||||
- 'main'
|
||||
jobs:
|
||||
release-image:
|
||||
runs-on: ubuntu-fast
|
||||
env:
|
||||
DOCKER_ORG: ${{ vars.DOCKER_ORG }}
|
||||
DOCKER_LATEST: latest
|
||||
RUNNER_TOOL_CACHE: /toolcache
|
||||
steps:
|
||||
- name: Checkout
|
||||
uses: actions/checkout@v3
|
||||
|
||||
- name: Set up QEMU
|
||||
uses: docker/setup-qemu-action@v2
|
||||
|
||||
- name: Set up Docker BuildX
|
||||
uses: docker/setup-buildx-action@v2
|
||||
with: # replace it with your local IP
|
||||
config-inline: |
|
||||
[registry."${{ vars.DOCKER_REGISTRY }}"]
|
||||
http = true
|
||||
insecure = true
|
||||
|
||||
- name: Login to DockerHub
|
||||
uses: docker/login-action@v2
|
||||
with:
|
||||
registry: ${{ vars.DOCKER_REGISTRY }} # replace it with your local IP
|
||||
username: ${{ secrets.DOCKER_USERNAME }}
|
||||
password: ${{ secrets.DOCKER_PASSWORD }}
|
||||
|
||||
- name: Get Meta
|
||||
id: meta
|
||||
run: |
|
||||
echo REPO_NAME=$(echo ${GITHUB_REPOSITORY} | awk -F"/" '{print $2}') >> $GITHUB_OUTPUT
|
||||
echo REPO_VERSION=$(git describe --tags --always | sed 's/^v//') >> $GITHUB_OUTPUT
|
||||
|
||||
- name: Build and push
|
||||
uses: docker/build-push-action@v4
|
||||
with:
|
||||
context: .
|
||||
file: ./Dockerfile
|
||||
platforms: |
|
||||
linux/amd64
|
||||
push: true
|
||||
tags: | # replace it with your local IP and tags
|
||||
${{ vars.DOCKER_REGISTRY }}/${{ env.DOCKER_ORG }}/${{ steps.meta.outputs.REPO_NAME }}:${{ steps.meta.outputs.REPO_VERSION }}
|
||||
${{ vars.DOCKER_REGISTRY }}/${{ env.DOCKER_ORG }}/${{ steps.meta.outputs.REPO_NAME }}:${{ env.DOCKER_LATEST }}
|
||||
8
Dockerfile
Normal file
8
Dockerfile
Normal file
@@ -0,0 +1,8 @@
|
||||
FROM golang:1.24.1
|
||||
WORKDIR /app
|
||||
COPY go.mod ./
|
||||
RUN go mod download
|
||||
COPY *.go ./
|
||||
RUN CGO_ENABLED=0 GOOS=linux go build -o /goprg
|
||||
EXPOSE 8080
|
||||
CMD ["/goprg"]
|
||||
3
go.mod
Normal file
3
go.mod
Normal file
@@ -0,0 +1,3 @@
|
||||
module git.send.nrw/StadtHilden/ipv6calculator
|
||||
|
||||
go 1.23.1
|
||||
96
main.go
Normal file
96
main.go
Normal file
@@ -0,0 +1,96 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"html/template"
|
||||
"log"
|
||||
"net"
|
||||
"net/http"
|
||||
)
|
||||
|
||||
const (
|
||||
listenAddr = ":8080" // server port
|
||||
ulaPrefix = "fdcb:7de3:a12a:0::" // fixed ULA /96 prefix
|
||||
)
|
||||
|
||||
// pageTemplate is served for both GET (empty result) and POST (with result).
|
||||
var pageTemplate = template.Must(template.New("page").Parse(`<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="utf-8"/>
|
||||
<title>IPv4 → IPv6‑Mapper</title>
|
||||
<style>
|
||||
body { font-family: system-ui, sans-serif; margin: 2rem; }
|
||||
form { display:flex; gap:.5rem; }
|
||||
input[type=text] { flex:1; padding:.4rem; font-size:1rem; }
|
||||
button { padding:.5rem 1rem; font-size:1rem; cursor:pointer; }
|
||||
#result { margin-top:1.5rem; font-weight:bold; }
|
||||
.error { color:#b00; }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>IPv4 → IPv6‑Mapper</h1>
|
||||
<form action="/convert" method="post">
|
||||
<input type="text" name="ipv4" placeholder="172.29.0.0" value="{{.IPv4}}" required />
|
||||
<button type="submit">Umrechnen</button>
|
||||
</form>
|
||||
{{if .IPv6}}
|
||||
<div id="result">IPv6‑Adresse: <code>{{.IPv6}}</code></div>
|
||||
{{end}}
|
||||
{{if .Error}}
|
||||
<div class="error">Fehler: {{.Error}}</div>
|
||||
{{end}}
|
||||
<p>Präfix: <code>` + ulaPrefix + `</code> (feste /96‑Zuordnung)</p>
|
||||
</body>
|
||||
</html>`))
|
||||
|
||||
// viewData transports data into the page template.
|
||||
type viewData struct {
|
||||
IPv4 string
|
||||
IPv6 string
|
||||
Error string
|
||||
}
|
||||
|
||||
func main() {
|
||||
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
|
||||
// Empty page on root
|
||||
renderPage(w, viewData{})
|
||||
})
|
||||
|
||||
http.HandleFunc("/convert", func(w http.ResponseWriter, r *http.Request) {
|
||||
if err := r.ParseForm(); err != nil {
|
||||
renderPage(w, viewData{Error: "Ungültiges Formular"})
|
||||
return
|
||||
}
|
||||
ipv4Str := r.FormValue("ipv4")
|
||||
ipv6, err := embedIPv4(ipv4Str)
|
||||
data := viewData{IPv4: ipv4Str}
|
||||
if err != nil {
|
||||
data.Error = err.Error()
|
||||
} else {
|
||||
data.IPv6 = ipv6
|
||||
}
|
||||
renderPage(w, data)
|
||||
})
|
||||
|
||||
log.Printf("Server läuft auf http://localhost%s …", listenAddr)
|
||||
log.Fatal(http.ListenAndServe(listenAddr, nil))
|
||||
}
|
||||
|
||||
// embedIPv4 converts an IPv4 dotted string into the ulaPrefix‑based IPv6 address.
|
||||
func embedIPv4(ipv4 string) (string, error) {
|
||||
ip := net.ParseIP(ipv4).To4()
|
||||
if ip == nil {
|
||||
return "", fmt.Errorf("'%s' ist keine gültige IPv4‑Adresse", ipv4)
|
||||
}
|
||||
first := uint16(ip[0])<<8 | uint16(ip[1]) // High 16 bits
|
||||
second := uint16(ip[2])<<8 | uint16(ip[3]) // Low 16 bits
|
||||
return fmt.Sprintf("%s%x:%x", ulaPrefix, first, second), nil
|
||||
}
|
||||
|
||||
func renderPage(w http.ResponseWriter, d viewData) {
|
||||
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
||||
if err := pageTemplate.Execute(w, d); err != nil {
|
||||
http.Error(w, err.Error(), http.StatusInternalServerError)
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user