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|
package main
import (
"embed"
"flag"
"fmt"
"html/template"
"log"
"math/rand"
"net"
"net/http"
"os"
"strings"
"sync"
"time"
"github.com/gorilla/mux"
"riedstra.dev/mitch/steam-export/steam"
)
type App struct {
Library *steamLib
Status *statusInfo
Templates *template.Template
// Sending to this channel triggers the downloader in the background
download chan string
}
func NewApp(libPath string) (*App, error) {
lib, err := steam.NewLibrary(libPath)
if err != nil {
return nil, err
}
a := &App{
Library: &steamLib{},
Status: &statusInfo{},
download: make(chan string),
}
a.Library.Library = *lib
a.Templates = template.Must(template.New("index").Parse(indexTemplate))
return a, nil
}
type steamLib struct {
steam.Library
sync.Mutex
}
type statusInfo struct {
sync.RWMutex
Running bool
Error error
Url string
Transferred int64
Size int64
Start *time.Time
}
var (
Version = "Development"
Logger = log.New(os.Stderr, "", log.LstdFlags)
Listen = ":8899"
//go:embed static/*
embeddedStatic embed.FS
//go:embed templates/index.html
indexTemplate string
)
func (a *App) LibrarySet(path string) {
Logger.Println("Starting library reload")
a.Library.Lock()
defer a.Library.Unlock()
var err error
l2, err := steam.NewLibrary(path)
if err != nil {
Logger.Printf("Error reopening lib: %s", err)
return
}
a.Library.Library = *l2
Logger.Println("Done reloading lib")
}
func (a *App) LibraryReload() {
cur := a.Library.Folder
a.LibrarySet(cur)
return
}
func (a *App) HandleSetLib(w http.ResponseWriter, r *http.Request) {
if unauthorizedIfNotLocal(w, r) {
return
}
err := r.ParseForm()
if err != nil {
Logger.Printf("Setlib: While parsing form: %s", err)
http.Error(w, fmt.Sprintf("Invalid form: %s", err), 400)
return
}
a.LibrarySet(r.Form.Get("path"))
http.Redirect(w, r, "/", 302)
}
func (a *App) HandleQuit(w http.ResponseWriter, r *http.Request) {
if unauthorizedIfNotLocal(w, r) {
return
}
Logger.Println("Quit was called, exiting")
w.Header().Add("Content-type", "text/plain")
w.Write([]byte("Shutting down..."))
go func() {
time.Sleep(time.Second * 2)
os.Exit(0)
}()
return
}
func unauthorizedIfNotLocal(w http.ResponseWriter, r *http.Request) bool {
if !isLocal(r.RemoteAddr) {
http.Error(w, "Unauthorized", http.StatusUnauthorized)
Logger.Printf("Unauthorized request from: %s for %s",
r.RemoteAddr, r.RequestURI)
return true
}
return false
}
func isLocal(addr string) bool {
_, localNet, _ := net.ParseCIDR("127.0.0.1/8")
return localNet.Contains(net.ParseIP(strings.Split(addr, ":")[0]))
}
// getHostIP attempts to guess the IP address of the current machine and
// returns that. Simply bails at the first non sane looking IP and returns it.
// Not ideal but it should work well enough most of the time
func getHostIP() string {
iFaces, err := net.Interfaces()
if err != nil {
return "127.0.0.1"
}
// RFC 3927
_, ipv4LinkLocal, _ := net.ParseCIDR("169.254.0.0/16")
for _, iFace := range iFaces {
addrs, err := iFace.Addrs()
if err != nil {
return "127.0.0.1"
}
for _, a := range addrs {
n, ok := a.(*net.IPNet)
if !ok {
continue
}
if n.IP.To4() != nil && !n.IP.IsLoopback() && !ipv4LinkLocal.Contains(n.IP.To4()) {
return n.IP.String()
}
}
}
return "127.0.0.1"
}
func getPort() string {
s := strings.Split(Listen, ":")
if len(s) != 2 {
return Listen
}
return s[1]
}
func main() {
fl := flag.NewFlagSet("steam-export", flag.ExitOnError)
debug := fl.Bool("d", false, "Print line numbers in log")
fl.StringVar(&Listen, "l", Listen, "What address do we listen on?")
fl.StringVar(&DefaultLib, "L", DefaultLib, "Full path to default library")
fl.Parse(os.Args[1:])
if *debug {
Logger.SetFlags(log.LstdFlags | log.Llongfile)
}
a, err := NewApp(DefaultLib)
if err != nil {
Logger.Fatal(err)
}
go a.installer()
r := mux.NewRouter()
r.HandleFunc("/quit", a.HandleQuit)
r.HandleFunc("/setLib", a.HandleSetLib)
r.HandleFunc("/delete", a.HandleDelete)
r.HandleFunc("/install", a.HandleInstall)
r.HandleFunc("/steam-export-web.exe", serveSelf)
r.HandleFunc("/download/{game}", a.HandleDownload)
r.HandleFunc("/status", a.HandleStats)
r.PathPrefix("/static").Handler(
http.FileServer(http.FS(embeddedStatic)))
r.HandleFunc("/", a.HandleIndex)
s := http.Server{
Handler: r,
Addr: Listen,
}
go startBrowser()
for i := 0; i < 5; i++ {
err = s.ListenAndServe()
if err != nil {
Logger.Printf("Encountered: %s", err)
rand.Seed(time.Now().UnixNano())
Listen = fmt.Sprintf(":%d", rand.Intn(63000)+1024)
Logger.Printf("Trying: %s", Listen)
s.Addr = Listen
}
}
}
|
