From 62f38bfef3681209933c88702ed3ad26db911cb6 Mon Sep 17 00:00:00 2001
From: Markus Sattler <help.markus+git@gmail.com>
Date: Wed, 9 Dec 2015 13:51:39 +0100
Subject: [PATCH] add base64 class

---
 cores/esp8266/base64.cpp | 63 ++++++++++++++++++++++++++++++++++++++++
 cores/esp8266/base64.h   | 36 +++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 cores/esp8266/base64.cpp
 create mode 100644 cores/esp8266/base64.h

diff --git a/cores/esp8266/base64.cpp b/cores/esp8266/base64.cpp
new file mode 100644
index 000000000..11deb0af0
--- /dev/null
+++ b/cores/esp8266/base64.cpp
@@ -0,0 +1,63 @@
+/**
+ * base64.cpp
+ *
+ * Created on: 09.12.2015
+ *
+ * Copyright (c) 2015 Markus Sattler. All rights reserved.
+ * This file is part of the ESP8266 core for Arduino.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "Arduino.h"
+extern "C" {
+#include "libb64/cdecode.h"
+#include "libb64/cencode.h"
+}
+#include "base64.h"
+
+/**
+ * convert input data to base64
+ * @param data uint8_t *
+ * @param length size_t
+ * @return String
+ */
+String base64::encode(uint8_t * data, size_t length) {
+    // base64 needs more size then the source data
+    size_t size = ((length * 1.6f) + 1);
+    char * buffer = (char *) malloc(size);
+    if(buffer) {
+        base64_encodestate _state;
+        base64_init_encodestate(&_state);
+        int len = base64_encode_block((const char *) &data[0], length, &buffer[0], &_state);
+        len = base64_encode_blockend((buffer + len), &_state);
+
+        String base64 = String(buffer);
+        free(buffer);
+        return base64;
+    }
+    return String("-FAIL-");
+}
+
+/**
+ * convert input data to base64
+ * @param text String
+ * @return String
+ */
+String base64::encode(String text) {
+    return base64::encode((uint8_t *) text.c_str(), text.length());
+}
+
diff --git a/cores/esp8266/base64.h b/cores/esp8266/base64.h
new file mode 100644
index 000000000..39be2d397
--- /dev/null
+++ b/cores/esp8266/base64.h
@@ -0,0 +1,36 @@
+/**
+ * base64.h
+ *
+ * Created on: 09.12.2015
+ *
+ * Copyright (c) 2015 Markus Sattler. All rights reserved.
+ * This file is part of the ESP8266 core for Arduino.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef CORE_BASE64_H_
+#define CORE_BASE64_H_
+
+class base64 {
+    public:
+        static String encode(uint8_t * data, size_t length);
+        static String encode(String text);
+    private:
+};
+
+
+#endif /* CORE_BASE64_H_ */