Working auth and photo json endpoint

Signed-off-by: Kris Nóva <kris@nivenly.com>

vendor/github.com/dsoprea/go-utility/v2/filesystem/utility.go

@@ -0,0 +1,17 @@
+package rifs
+
+import (
+	"io"
+	"os"
+
+	log "github.com/dsoprea/go-logging"
+)
+
+// GetOffset returns the current offset of the Seeker and just panics if unable
+// to find it.
+func GetOffset(s io.Seeker) int64 {
+	offsetRaw, err := s.Seek(0, os.SEEK_CUR)
+	log.PanicIf(err)
+
+	return offsetRaw
+}