base64: move it to private for websockets

There are no other consumers for this, and reasonably unlikely to
be others for now.  (Other use cases are JWTs, but that would be
another whole set of functionality that we're not ready to take on.)

1 files changed, 42 insertions, 0 deletions

diff --git a/src/supplemental/websocket/base64.h b/src/supplemental/websocket/base64.h
new file mode 100644
index 00000000..97ca8968
--- /dev/null
+++ b/src/supplemental/websocket/base64.h
@@ -0,0 +1,42 @@
+//
+// Copyright (c) 2014 Wirebird Labs LLC.  All rights reserved.
+// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom
+// the Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+#ifndef NNI_BASE64_INCLUDED
+#define NNI_BASE64_INCLUDED
+
+#include <stddef.h>
+#include <stdint.h>
+
+// Based on base64.c (Public Domain) by Jon Mayo.
+// Base64 is defined in RFC 2045, section 6.8.
+
+// This function encodes an arbitrary byte array into base64
+// null-terminated string.  It returns the number of characters
+// emitted.
+size_t nni_base64_encode(const uint8_t *, size_t, char *, size_t);
+
+// This function decodes a base64 string into supplied buffer.
+// It returns the number of bytes emitted.
+size_t nni_base64_decode(const char *, size_t, uint8_t *, size_t);
+
+#endif