109 lines
2.3 KiB
Go
109 lines
2.3 KiB
Go
package middleware
|
|
|
|
import (
|
|
"context"
|
|
"crypto/ed25519"
|
|
"fmt"
|
|
"git.lumeweb.com/LumeWeb/portal/account"
|
|
"github.com/golang-jwt/jwt/v5"
|
|
"net/http"
|
|
"strings"
|
|
)
|
|
|
|
const (
|
|
S5AuthUserIDKey = "userID"
|
|
S5AuthCookieName = "s5-auth-token"
|
|
S5AuthQueryParam = "auth_token"
|
|
)
|
|
|
|
func FindAuthToken(r *http.Request) string {
|
|
authHeader := ParseAuthTokenHeader(r.Header)
|
|
|
|
if authHeader != "" {
|
|
return authHeader
|
|
}
|
|
|
|
for _, cookie := range r.Cookies() {
|
|
if cookie.Name == S5AuthCookieName {
|
|
return cookie.Value
|
|
}
|
|
}
|
|
|
|
return r.FormValue(S5AuthQueryParam)
|
|
}
|
|
|
|
func ParseAuthTokenHeader(headers http.Header) string {
|
|
authHeader := headers.Get("Authorization")
|
|
if authHeader == "" {
|
|
return ""
|
|
}
|
|
|
|
authHeader = strings.TrimPrefix(authHeader, "Bearer ")
|
|
|
|
return authHeader
|
|
}
|
|
|
|
func AuthMiddleware(identity ed25519.PrivateKey, accounts *account.AccountServiceDefault) func(http.Handler) http.Handler {
|
|
return func(next http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
authToken := FindAuthToken(r)
|
|
|
|
if authToken == "" {
|
|
http.Error(w, "Invalid JWT", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
token, err := jwt.Parse(authToken, func(token *jwt.Token) (interface{}, error) {
|
|
if _, ok := token.Method.(*jwt.SigningMethodEd25519); !ok {
|
|
return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
|
|
}
|
|
|
|
publicKey := identity.Public()
|
|
|
|
return publicKey, nil
|
|
})
|
|
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if claim, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
|
|
subject, ok := claim["sub"]
|
|
|
|
if !ok {
|
|
http.Error(w, "Invalid User ID", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
var userID uint64
|
|
|
|
switch v := subject.(type) {
|
|
case uint64:
|
|
userID = v
|
|
case float64:
|
|
userID = uint64(v)
|
|
default:
|
|
// Handle the case where userID is of an unexpected type
|
|
http.Error(w, "Invalid User ID", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
exists, _ := accounts.AccountExists(userID)
|
|
|
|
if !exists {
|
|
http.Error(w, "Invalid User ID", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
ctx := context.WithValue(r.Context(), S5AuthUserIDKey, userID)
|
|
r = r.WithContext(ctx)
|
|
|
|
next.ServeHTTP(w, r)
|
|
} else {
|
|
http.Error(w, "Invalid JWT", http.StatusUnauthorized)
|
|
}
|
|
})
|
|
}
|
|
}
|