From b2125dd4be5c3cb4d369d12eef5d49d192938be3 Mon Sep 17 00:00:00 2001
From: Joakim Hulthe <joakim@hulthe.net>
Date: Fri, 11 May 2018 21:25:11 +0200
Subject: [PATCH] Initial Commit

---
 Dockerfile       | 12 ++++++++++++
 LICENSE          | 19 +++++++++++++++++++
 README.md        | 13 +++++++++++++
 default.template | 26 ++++++++++++++++++++++++++
 script.sh        |  3 +++
 5 files changed, 73 insertions(+)
 create mode 100644 Dockerfile
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100644 default.template
 create mode 100755 script.sh

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..19044b0
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,12 @@
+FROM nginx:alpine
+
+EXPOSE 80
+
+ENV PROXY_PASS_HOST=http://example.com
+
+COPY default.template /etc/nginx/conf.d/default.template
+
+COPY script.sh /usr/share/nginx/script.sh
+
+CMD envsubst '$PROXY_PASS_HOST' < etc/nginx/conf.d/default.template > /etc/nginx/conf.d/default.conf && \
+    nginx -g 'daemon off;'
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..1a647ba
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2018 Joakim Hulthe
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..6c251be
--- /dev/null
+++ b/README.md
@@ -0,0 +1,13 @@
+curl\_sh
+========
+_A User-Agent based proxy_
+
+This nginx configuration will return `script.sh` if the user-agent matches "**curl**".
+In any other case it will act as a reverse-proxy to `PROXY_PASS_HOST`.
+
+### Usage
+
+```sh
+$ docker build . -t curl_sh
+$ docker run -e PROXY_PASS_HOST=http://my_host:1234 --rm curl_sh
+```
diff --git a/default.template b/default.template
new file mode 100644
index 0000000..226a1db
--- /dev/null
+++ b/default.template
@@ -0,0 +1,26 @@
+server {
+	listen       80;
+	server_name  _;
+
+	#charset koi8-r;
+	#access_log  /var/log/nginx/host.access.log  main;
+
+	location / {
+		error_page 418 = @pass;
+		recursive_error_pages on;
+		if ( $http_user_agent !~ 'curl' ) {
+			return 418;
+		}
+
+		root /usr/share/nginx;
+		try_files /script.sh =404;
+	}
+
+	location @pass {
+		proxy_pass $PROXY_PASS_HOST;
+		proxy_set_header Host $host;
+		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+		proxy_redirect default;
+	}
+}
+
diff --git a/script.sh b/script.sh
new file mode 100755
index 0000000..c507c71
--- /dev/null
+++ b/script.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Hello there c:<"