127 lines
2.6 KiB
Go
127 lines
2.6 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"encoding/hex"
|
|
"flag"
|
|
"net/http"
|
|
"time"
|
|
|
|
"github.com/google/uuid"
|
|
"github.com/o1egl/paseto/v2"
|
|
"golang.org/x/crypto/ed25519"
|
|
"golang.org/x/net/trace"
|
|
)
|
|
|
|
var (
|
|
// Paseto
|
|
pasetoPublicKey = flag.String("paseto-public-key", "", "Paseto public key (see tools/paseto-key-gen.go)")
|
|
pasetoPrivateKey = flag.String("paseto-private-key", "", "Paseto private key")
|
|
)
|
|
|
|
type GoTraceMiddleware struct{ next http.Handler }
|
|
|
|
func (gtm GoTraceMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
|
ctx := r.Context()
|
|
tr := trace.New("http", r.URL.Path)
|
|
ctx = trace.NewContext(ctx, tr)
|
|
r = r.WithContext(ctx)
|
|
gtm.next.ServeHTTP(w, r)
|
|
tr.Finish()
|
|
}
|
|
|
|
type PasetoMiddleware struct {
|
|
next http.Handler
|
|
pubKey ed25519.PublicKey
|
|
privKey ed25519.PrivateKey
|
|
v2 paseto.V2
|
|
}
|
|
|
|
func MakeMiddleware(pub, priv string, next http.Handler) (*PasetoMiddleware, error) {
|
|
var result PasetoMiddleware
|
|
result.next = next
|
|
|
|
publicKey, err := hex.DecodeString(pub)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result.pubKey = ed25519.PublicKey(publicKey)
|
|
|
|
privateKey, err := hex.DecodeString(priv)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result.privKey = ed25519.PrivateKey(privateKey)
|
|
|
|
return &result, nil
|
|
}
|
|
|
|
func (pm PasetoMiddleware) CreateToken(data [][2]string, expiration time.Time) (string, error) {
|
|
claims := paseto.JSONToken{
|
|
Expiration: expiration,
|
|
Jti: uuid.New().String(),
|
|
Subject: "Within",
|
|
IssuedAt: time.Now(),
|
|
}
|
|
|
|
for _, datum := range data {
|
|
claims.Set(datum[0], datum[1])
|
|
}
|
|
|
|
tok, err := pm.v2.Sign(pm.privKey, claims, nil)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return tok, nil
|
|
}
|
|
|
|
var publicRoutes map[string]bool
|
|
|
|
func init() {
|
|
publicRoutes = map[string]bool{
|
|
"/webhooks/": true,
|
|
"/static/": true,
|
|
"/static/main.js": true,
|
|
"/static/gruvbox.css": true,
|
|
"/static/favicon.ico": true,
|
|
"/static/favicon.png": true,
|
|
"/debug/requests": true,
|
|
"/debug/events": true,
|
|
}
|
|
}
|
|
|
|
type ctxKey int
|
|
|
|
const (
|
|
tokenKey ctxKey = iota
|
|
)
|
|
|
|
func (pm PasetoMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
|
tok := r.Header.Get("Authorization")
|
|
var newJsonToken paseto.JSONToken
|
|
var newFooter string
|
|
var err error
|
|
|
|
if r.URL.EscapedPath() == "/.within/botinfo" || r.URL.EscapedPath() == "/" {
|
|
goto ok
|
|
}
|
|
|
|
for k := range publicRoutes {
|
|
if r.URL.EscapedPath() == k {
|
|
goto ok
|
|
}
|
|
}
|
|
|
|
err = pm.v2.Verify(tok, pm.pubKey, &newJsonToken, &newFooter)
|
|
if err != nil {
|
|
http.Error(w, "Not allowed", http.StatusForbidden)
|
|
return
|
|
}
|
|
|
|
r = r.WithContext(context.WithValue(r.Context(), tokenKey, newJsonToken))
|
|
|
|
ok:
|
|
pm.next.ServeHTTP(w, r)
|
|
}
|