Added authentication middleware

contexts/keys.go

@@ -0,0 +1,11 @@
+package contexts
+
+type contextKey string
+
+func (c contextKey) String() string {
+	return "projectreshoot context key " + string(c)
+}
+
+var (
+	contextKeyAuthorizedUser = contextKey("auth-user")
+)

contexts/user.go

@@ -0,0 +1,20 @@
+package contexts
+
+import (
+	"context"
+	"projectreshoot/db"
+)
+
+// Return a new context with the user added in
+func SetUser(ctx context.Context, u *db.User) context.Context {
+	return context.WithValue(ctx, contextKeyAuthorizedUser, u)
+}
+
+// Retrieve a user from the given context. Returns nil if not set
+func GetUser(ctx context.Context) *db.User {
+	user, ok := ctx.Value(contextKeyAuthorizedUser).(*db.User)
+	if !ok {
+		return nil
+	}
+	return user
+}