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package main
import (
"encoding/json"
//"errors"
"flag"
"io/ioutil"
"log"
"net/http"
"os"
//"path"
"io"
"path/filepath"
)
const APP_NAME = "Ninja Go Local Cloud"
const APP_VERSION = "0.1 Draft"
var versionFlag bool
var interfaceFlag string
var portFlag string
var rootFlag string
const filePath = "/file/"
const dirPath = "/directory/"
const webPath = "/web?url="
const statusPath = "/cloudstatus"
const filePathLen = len(filePath)
const dirPathLen = len(dirPath)
const webPathLen = len(webPath)
const statusPathLen = len(statusPath)
//////// FILESYSTEM
func exist(path string) bool {
_, err := os.Stat(path)
if !os.IsNotExist(err) {
return true
}
return false
}
//// Files
func writeFile(path string, content []byte, overwrite bool) (err error) {
if !overwrite {
if exist(path) {
err = os.ErrExist
return
}
}
err = ioutil.WriteFile(path, content, 0600)
return
}
func readFile(path string) (content []byte, err error) {
content, err = ioutil.ReadFile(path)
return
}
func removeFile(path string) (err error) {
err = os.Remove(path)
return
}
func moveFile(source string, dest string) (err error) {
err = os.Rename(source, dest)
return
}
func copyFile(source string, dest string) (err error) {
// from https://gist.github.com/2876519
sf, err := os.Open(source)
if err != nil {
return err
}
defer sf.Close()
df, err := os.Create(dest)
if err != nil {
return err
}
defer df.Close()
_, err = io.Copy(df, sf)
if err == nil {
si, err := os.Stat(source)
if err != nil {
err = os.Chmod(dest, si.Mode())
}
}
return
}
//// Dirs
func createDir(path string) (err error) {
err = os.MkdirAll(path, 0600)
return
}
func removeDir(path string) (err error) {
err = os.RemoveAll(path)
return
}
func listDir(path string) (list []os.FileInfo, err error) {
list, err = ioutil.ReadDir(path)
return
}
func moveDir(source string, dest string) (err error) {
err = os.Rename(source, dest)
return
}
func copyDir(source string, dest string) (err error) {
// from https://gist.github.com/2876519
fi, err := os.Stat(source)
if err != nil {
return
}
if !fi.IsDir() {
return os.ErrInvalid
}
_, err = os.Open(dest)
if !os.IsNotExist(err) {
return os.ErrExist
}
err = os.MkdirAll(dest, fi.Mode())
if err != nil {
return
}
entries, err := ioutil.ReadDir(source)
for _, entry := range entries {
sfp := source + "/" + entry.Name()
dfp := dest + "/" + entry.Name()
if entry.IsDir() {
err = copyDir(sfp, dfp)
if err != nil {
return
}
} else {
err = copyFile(sfp, dfp)
if err != nil {
return
}
}
}
return
}
//////// REQUEST HANDLERS
//// File APIs
func fileHandler(w http.ResponseWriter, r *http.Request) {
p := r.URL.Path[filePathLen:]
filepath.Clean(p)
switch r.Method {
case "POST":
// Create a new file
case "PUT":
if r.Header.Get("sourceURI") == "" {
// Update an existing file (save over existing file)
} else {
// Copy, Move of an existing file
}
case "DELETE":
// Delete an existing file
case "GET":
// Read an existing file
}
}
//// Directory APIs
func dirHandler(w http.ResponseWriter, r *http.Request) {
p := r.URL.Path[dirPathLen:]
filepath.Clean(p)
switch r.Method {
case "POST":
// Create a new directory
case "DELETE":
// Delete an existing directory
case "GET":
// List the contents of an existing directory
case "PUT":
// Copy, Move of an existing directory
}
}
//// Web API
// Get text or binary data from a URL
func getDataHandler(w http.ResponseWriter, r *http.Request) {
}
//// Cloud Status API
// Get the cloud status JSON
func getStatusHandler(w http.ResponseWriter, r *http.Request) {
cloudStatus := map[string]string{
"name": APP_NAME,
"version": APP_VERSION,
"server-root": rootFlag,
"status": "running",
}
j, err := json.Marshal(cloudStatus)
if err != nil {
log.Println(err)
}
w.Write(j)
}
//////// INIT and MAIN
func init() {
flag.BoolVar(&versionFlag, "v", false, "Print the version number.")
flag.StringVar(&interfaceFlag, "i", "localhost", "Listening interface.")
flag.StringVar(&portFlag, "p", "58080", "Listening port.")
flag.StringVar(&rootFlag, "r", ".", "Root directory.")
}
func main() {
flag.Parse()
if versionFlag {
log.Println("Version:", APP_VERSION)
return
}
log.Println("Starting " + APP_NAME + " " + APP_VERSION + " on " + interfaceFlag + ":" + portFlag + " in " + rootFlag)
http.HandleFunc(filePath, fileHandler)
http.HandleFunc(dirPath, dirHandler)
http.HandleFunc(webPath, getDataHandler)
http.HandleFunc(statusPath, getStatusHandler)
err := http.ListenAndServe(interfaceFlag+":"+portFlag, nil)
if err != nil {
log.Println(err)
return
}
}
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