Adding simple Go server

server/index.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+var (
+	listenAddress = flag.String("listen", "0.0.0.0:80", "Where the server listens for connections. [interface]:port")
+	staticPath    = flag.String("static", "../", "Location of static files.")
+	scriptPath    = flag.String("scripts", "./modules/shell_files", "Location of shell scripts used to gather stats.")
+)
+
+func init() {
+	flag.Parse()
+}
+
+func main() {
+	http.Handle("/", http.FileServer(http.Dir(*staticPath)))
+	http.HandleFunc("/server/", func(w http.ResponseWriter, r *http.Request) {
+		module := r.URL.Query().Get("module")
+		script := filepath.Join(*scriptPath, module+".sh")
+		if module == "" {
+			http.Error(w, "No module specified, or requested module doesn't exist.", 406)
+			return
+		}
+
+		// Execute the command
+		cmd := exec.Command(script)
+		var output bytes.Buffer
+		cmd.Stdout = &output
+		err := cmd.Run()
+		if err != nil {
+			fmt.Printf("Error executing '%s': %s\n\tScript output: %s\n", script, err.Error(), output.String())
+			http.Error(w, "Unable to execute module.", http.StatusInternalServerError)
+			return
+		}
+
+		w.Write(output.Bytes())
+	})
+
+	fmt.Println("Starting http server at:", *listenAddress)
+	err := http.ListenAndServe(*listenAddress, nil)
+	if err != nil {
+		fmt.Println("Error starting http server:", err)
+		os.Exit(1)
+	}
+}