152 lines
2.8 KiB
Go
152 lines
2.8 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
_ "embed"
|
|
"encoding/json"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"os/signal"
|
|
"sync"
|
|
"syscall"
|
|
)
|
|
|
|
var (
|
|
Config struct {
|
|
Port int
|
|
SessionD string
|
|
Debug bool
|
|
Semaphore sync.Mutex
|
|
}
|
|
|
|
//go:embed template.d/login.html
|
|
htmlLogin []byte
|
|
//go:embed template.d/index.html
|
|
htmlIndex []byte
|
|
)
|
|
|
|
func main() {
|
|
ctx, can := signal.NotifyContext(context.Background(), syscall.SIGINT)
|
|
defer can()
|
|
|
|
ctx, cleanup := contextWithCleanup(ctx)
|
|
defer cleanup()
|
|
|
|
config(ctx)
|
|
log.Printf("%+v", Config)
|
|
|
|
listenAndServe(ctx)
|
|
log.Println("done")
|
|
}
|
|
|
|
func contextWithCleanup(ctx context.Context) (context.Context, func()) {
|
|
m := map[int]func(){}
|
|
ctx = context.WithValue(ctx, "__cleanup__", m)
|
|
return ctx, func() {
|
|
defer func() {
|
|
recover()
|
|
}()
|
|
for _, v := range m {
|
|
v()
|
|
}
|
|
}
|
|
}
|
|
|
|
func contextWithCleanupFunc(ctx context.Context, foo func()) {
|
|
v := ctx.Value("__cleanup__")
|
|
if v == nil {
|
|
panic("cannot get context with cleanup func that doesnt have cleanup init")
|
|
}
|
|
m := v.(map[int]func())
|
|
m[len(m)] = foo
|
|
}
|
|
|
|
func config(ctx context.Context) {
|
|
d, err := os.MkdirTemp(os.TempDir(), "ai.*")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
contextWithCleanupFunc(ctx, func() { os.RemoveAll(d) })
|
|
|
|
flag.IntVar(&Config.Port, "p", 37070, "port to listen on")
|
|
flag.StringVar(&Config.SessionD, "d", d, "dir to store sessions")
|
|
flag.BoolVar(&Config.Debug, "debug", false, "debug mode")
|
|
flag.Parse()
|
|
}
|
|
|
|
func listenAndServe(ctx context.Context) {
|
|
wg := &sync.WaitGroup{}
|
|
s := &http.Server{
|
|
Addr: fmt.Sprintf(":%d", Config.Port),
|
|
Handler: http.HandlerFunc(handle),
|
|
}
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
if err := s.ListenAndServe(); err != nil && ctx.Err() == nil {
|
|
panic(err)
|
|
}
|
|
}()
|
|
|
|
<-ctx.Done()
|
|
s.Close()
|
|
wg.Wait()
|
|
}
|
|
|
|
func handle(w http.ResponseWriter, r *http.Request) {
|
|
if err := _handle(w, r); err != nil {
|
|
u, _, _ := r.BasicAuth()
|
|
log.Printf("%s: %s: %v", u, r.URL.Path, err)
|
|
}
|
|
}
|
|
|
|
func _handle(w http.ResponseWriter, r *http.Request) error {
|
|
u, p, ok := r.BasicAuth()
|
|
if !ok {
|
|
w.Header().Set("WWW-Authenticate", "Basic")
|
|
w.WriteHeader(http.StatusUnauthorized)
|
|
return errors.New("no auth")
|
|
}
|
|
_, _ = u, p
|
|
|
|
Config.Semaphore.Lock()
|
|
defer Config.Semaphore.Unlock()
|
|
|
|
return errors.New("not impl")
|
|
}
|
|
|
|
type Cookie struct {
|
|
Name string
|
|
}
|
|
|
|
func ParseCookie(r *http.Request) (Cookie, error) {
|
|
cookie, err := r.Cookie("root")
|
|
if err != nil {
|
|
return Cookie{}, err
|
|
}
|
|
|
|
var result Cookie
|
|
if err := json.Unmarshal([]byte(cookie.Value), &result); err != nil {
|
|
return Cookie{}, err
|
|
}
|
|
|
|
if result.Name == "" {
|
|
return Cookie{}, errors.New("incomplete cookie")
|
|
}
|
|
|
|
return result, nil
|
|
}
|
|
|
|
func (cookie Cookie) Serialize(w http.ResponseWriter) {
|
|
b, _ := json.Marshal(cookie)
|
|
c := &http.Cookie{
|
|
Name: "root",
|
|
Value: string(b),
|
|
}
|
|
http.SetCookie(w, c)
|
|
}
|