chore: initial public commit

engine/middleware/validate.go

@@ -0,0 +1,106 @@
+package middleware
+
+import (
+	"context"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gabehf/koito/internal/db"
+	"github.com/gabehf/koito/internal/logger"
+	"github.com/gabehf/koito/internal/models"
+	"github.com/gabehf/koito/internal/utils"
+	"github.com/google/uuid"
+)
+
+type MiddlwareContextKey string
+
+const (
+	UserContextKey   MiddlwareContextKey = "user"
+	apikeyContextKey MiddlwareContextKey = "apikeyID"
+)
+
+func ValidateSession(store db.DB) func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			l := logger.FromContext(r.Context())
+			cookie, err := r.Cookie("koito_session")
+			var sid uuid.UUID
+			if err == nil {
+				sid, err = uuid.Parse(cookie.Value)
+				if err != nil {
+					utils.WriteError(w, "session cookie is invalid", http.StatusUnauthorized)
+					return
+				}
+			}
+
+			l.Debug().Msg("Retrieved login cookie from request")
+
+			u, err := store.GetUserBySession(r.Context(), sid)
+			if err != nil {
+				l.Err(err).Msg("Failed to get user from session")
+				utils.WriteError(w, "internal server error", http.StatusInternalServerError)
+				return
+			}
+			if u == nil {
+				utils.WriteError(w, "unauthorized", http.StatusUnauthorized)
+				return
+			}
+
+			ctx := context.WithValue(r.Context(), UserContextKey, u)
+			r = r.WithContext(ctx)
+
+			l.Debug().Msgf("Refreshing session for user '%s'", u.Username)
+
+			store.RefreshSession(r.Context(), sid, time.Now().Add(30*24*time.Hour))
+
+			l.Debug().Msgf("Refreshed session for user '%s'", u.Username)
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
+func ValidateApiKey(store db.DB) func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := r.Context()
+			l := logger.FromContext(ctx)
+
+			authh := r.Header.Get("Authorization")
+			s := strings.Split(authh, "Token ")
+			if len(s) < 2 {
+				l.Debug().Msg("Authorization header must be formatted 'Token {token}'")
+				utils.WriteError(w, "unauthorized", http.StatusUnauthorized)
+				return
+			}
+
+			key := s[1]
+
+			u, err := store.GetUserByApiKey(ctx, key)
+			if err != nil {
+				l.Err(err).Msg("Failed to get user from database using api key")
+				utils.WriteError(w, "internal server error", http.StatusInternalServerError)
+				return
+			}
+			if u == nil {
+				l.Debug().Msg("Api key does not exist")
+				utils.WriteError(w, "unauthorized", http.StatusUnauthorized)
+				return
+			}
+
+			ctx = context.WithValue(r.Context(), UserContextKey, u)
+			r = r.WithContext(ctx)
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
+func GetUserFromContext(ctx context.Context) *models.User {
+	user, ok := ctx.Value(UserContextKey).(*models.User)
+	if !ok {
+		return nil
+	}
+	return user
+}