Initial QSfera import

Server/vendor/github.com/lestrrat-go/jwx/v3/internal/jwxio/BUILD.bazel

@@ -0,0 +1,8 @@
+load("@rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "jwxio",
+    srcs = ["jwxio.go"],
+    importpath = "github.com/lestrrat-go/jwx/v3/internal/jwxio",
+    visibility = ["//:__subpackages__"],
+)

Server/vendor/github.com/lestrrat-go/jwx/v3/internal/jwxio/jwxio.go

@@ -0,0 +1,29 @@
+package jwxio
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"strings"
+)
+
+var errNonFiniteSource = errors.New(`cannot read from non-finite source`)
+
+func NonFiniteSourceError() error {
+	return errNonFiniteSource
+}
+
+// ReadAllFromFiniteSource reads all data from a io.Reader _if_ it comes from a
+// finite source.
+func ReadAllFromFiniteSource(rdr io.Reader) ([]byte, error) {
+	switch rdr.(type) {
+	case *bytes.Reader, *bytes.Buffer, *strings.Reader:
+		data, err := io.ReadAll(rdr)
+		if err != nil {
+			return nil, err
+		}
+		return data, nil
+	default:
+		return nil, errNonFiniteSource
+	}
+}