From c41ef4ba8859dfeeba205ac23b1e5eedd627cd69 Mon Sep 17 00:00:00 2001
From: JMARyA <jmarya@hydrar.de>
Date: Fri, 30 Aug 2024 13:28:33 +0200
Subject: [PATCH] init

---
 Dockerfile         | 18 ++++++++++++++++++
 README.md          | 16 ++++++++++++++++
 docker-compose.yml | 10 ++++++++++
 entrypoint.sh      |  5 +++++
 4 files changed, 49 insertions(+)
 create mode 100644 Dockerfile
 create mode 100644 README.md
 create mode 100644 docker-compose.yml
 create mode 100644 entrypoint.sh

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..1742e6a
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,18 @@
+FROM alpine:latest AS builder
+
+RUN apk update && apk upgrade && \
+    apk add --no-cache go git
+
+WORKDIR /
+RUN git clone "https://github.com/jpillora/chisel"
+WORKDIR /chisel
+RUN go build -o chisel main.go
+
+FROM alpine:latest
+
+RUN apk update && apk upgrade && \
+    apk add --no-cache socat bash
+
+COPY --from=builder /chisel/chisel /usr/bin/chisel
+COPY ./entrypoint.sh /entrypoint.sh
+CMD ["/bin/bash", "/entrypoint.sh"]
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..17976d0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,16 @@
+# Chisel Forward
+This container allows to forward a local port to a remote system running chisel server.
+
+# TODO
+- Load Balancing
+- Error Handling
+- UDP
+
+## Configuration
+The container is configured through environment variables:
+- `$HOST`: The host running chisel server
+- `$LOCAL_PORT`: The local port to forward
+- `$LOCAL_HOST`: The local host address
+- `$REMOTE_PORT`: The remote port to expose the forward on
+- `$USER`: Authentication User
+- `$TOKEN`: Authentication Token
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..c57a5fd
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,10 @@
+services:
+  forward:
+    build: .
+    restart: unless-stopped
+    environment:
+      HOST: "https://chisel.example.com"
+      LOCAL_PORT: "8080"
+      REMOTE_PORT: "8080"
+      USER: "user"
+      TOKEN: "token"
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100644
index 0000000..bf81fd2
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+socat TCP4-LISTEN:$LOCAL_PORT,fork,reuseaddr TCP4:TCP4:$LOCAL_HOST:$LOCAL_PORT &
+chisel client --auth "$USER:$TOKEN" "$HOST" "R:$LOCAL_HOST:$LOCAL_PORT:127.0.0.1:$REMOTE_PORT" &
+wait