1 files changed, 79 insertions, 0 deletions
diff --git a/lib/cpp/src/protocol/TBase64Utils.cpp b/lib/cpp/src/protocol/TBase64Utils.cpp
new file mode 100644
index 000000000..14481c49c
--- /dev/null
+++ b/lib/cpp/src/protocol/TBase64Utils.cpp
@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include "TBase64Utils.h"
+
+#include <boost/static_assert.hpp>
+
+using std::string;
+
+namespace apache { namespace thrift { namespace protocol {
+
+
+static const uint8_t *kBase64EncodeTable = (const uint8_t *)
+  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+void  base64_encode(const uint8_t *in, uint32_t len, uint8_t *buf) {
+  buf[0] = kBase64EncodeTable[(in[0] >> 2) & 0x3F];
+  if (len == 3) {
+    buf[1] = kBase64EncodeTable[((in[0] << 4) + (in[1] >> 4)) & 0x3f];
+    buf[2] = kBase64EncodeTable[((in[1] << 2) + (in[2] >> 6)) & 0x3f];
+    buf[3] = kBase64EncodeTable[in[2] & 0x3f];
+  } else if (len == 2) {
+    buf[1] = kBase64EncodeTable[((in[0] << 4) + (in[1] >> 4)) & 0x3f];
+    buf[2] = kBase64EncodeTable[(in[1] << 2) & 0x3f];
+  } else  { // len == 1
+    buf[1] = kBase64EncodeTable[(in[0] << 4) & 0x3f];
+  }
+}
+
+static const uint8_t kBase64DecodeTable[256] ={
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,
+  52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,
+  -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,
+  15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,
+  -1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
+  41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+};
+
+void base64_decode(uint8_t *buf, uint32_t len) {
+  buf[0] = (kBase64DecodeTable[buf[0]] << 2) |
+           (kBase64DecodeTable[buf[1]] >> 4);
+  if (len > 2) {
+    buf[1] = ((kBase64DecodeTable[buf[1]] << 4) & 0xf0) |
+              (kBase64DecodeTable[buf[2]] >> 2);
+    if (len > 3) {
+      buf[2] = ((kBase64DecodeTable[buf[2]] << 6) & 0xc0) |
+                (kBase64DecodeTable[buf[3]]);
+    }
+  }
+}
+
+
+}}} // apache::thrift::protocol