From 29cbbd67d48d793ba800ff11a4c26b600621d86a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?yJan=20Christian=20Gr=C3=BCnhage?= <me@jcg.re>
Date: Mon, 10 Apr 2017 18:04:54 +0200
Subject: [PATCH] Added source code

---
 README.md    | 10 +++++++++-
 example.json | 13 +++++++++++++
 main.go      | 42 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 64 insertions(+), 1 deletion(-)
 create mode 100644 example.json
 create mode 100644 main.go

diff --git a/README.md b/README.md
index cec08bf..31ff9a3 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,10 @@
-# borg-gen-auth-keys
+### Generate an authorized_keys file:
 
+When working with borg serve in an automated environment, you should use an authorized_keys file that restricts the ssh sessions to use only borg, and only in the directory where the repo they should use lies in. This binary takes in a json file specifying the needed info and prints out the wanted authorized_keys file. 
+
+To generate that file, do this (assuming you have set up everything needed for go get, and $GOPATH/bin is in your $PATH):
+
+```bash
+go get git.jcg.re/jcgruenhage/borg-gen-auth-keys
+borg-gen-auth-keys yourjsonfile.json > ~/.ssh/authorized_keys  
+``` 
diff --git a/example.json b/example.json
new file mode 100644
index 0000000..3713236
--- /dev/null
+++ b/example.json
@@ -0,0 +1,13 @@
+{
+  "Folder": "/mnt/backupmount",
+  "Hosts":[
+    {
+      "Name": "host1",
+      "SSHKey": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQC7ZvLoWZgh5eMDQXLEdWobkt/B8mnM2osEynF0boorifRNwztQHY3bKXTHjUlMnnWH+UvZ3aXH16M1QmyuNi4kLUTSMu4GSVsXMfknHRjgJ927Y/j5TCGXfOcfB0B4pcgHS3fVi1VMXXiZ1S/X8cbt1llXHfEC5eKutDeJkRer3w== SSH_KEY"
+    },
+    {
+      "Name": "host2",
+      "SSHKey": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDIgm31x6ETn4HwxBthe3m14s1Bp9p8sT5kC/XSijN6uPpUmuF2ciRGc5QLzsBJR6MAD45zg6Q9nLBZGBnSIZDNfSGA5sqAeoZVHm4vjQWxenqG7dlNFXlC1DIHzMxxDsDUPneyXGBemAvVwL9h4HEC4xhMQIAJfaZqSWuNzzqYWw== SSH_KEY"
+    }
+  ]
+}
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..411caba
--- /dev/null
+++ b/main.go
@@ -0,0 +1,42 @@
+package main
+
+import (
+	"os"
+	"io/ioutil"
+	"encoding/json"
+	"fmt"
+)
+
+type Host struct {
+	Name string
+	SSHKey string
+}
+
+type HostList struct {
+	Folder string
+	Hosts []Host
+}
+
+func main() {
+	inputFilePath := os.Args[1]
+	dat, err := ioutil.ReadFile(inputFilePath)
+	check(err)
+	var hosts HostList
+	err = json.Unmarshal(dat, &hosts)
+	check(err)
+	for i := 0; i < len(hosts.Hosts); i++ {
+		fmt.Print("command=\"borg serve --restrict-to-path ")
+		fmt.Print(hosts.Folder)
+		fmt.Print("/")
+		fmt.Print(hosts.Hosts[i].Name)
+		fmt.Print("\",no-pty,no-agent-forwarding,no-port-forwarding,no-X11-forwarding,no-user-rc ")
+		fmt.Print(hosts.Hosts[i].SSHKey)
+		fmt.Print("\n")
+	}
+
+}
+func check(e error) {
+	if e != nil {
+		panic(e)
+	}
+}