1 files changed, 50 insertions, 0 deletions
diff --git a/include/clplumbing/base64.h b/include/clplumbing/base64.h
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+++ b/include/clplumbing/base64.h
@@ -0,0 +1,50 @@
+/*
+ * 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 _CLPLUMBING_BASE64_H
+#	define _CLPLUMBING_BASE64_H
+/*
+ *
+ * Base64 conversion functions.
+ * They convert from a binary array into a single string
+ * in base 64.  This is almost (but not quite) like section 5.2 of RFC 1341
+ * The only difference is that we don't care about line lengths.
+ * We do use their encoding algorithm.
+ *
+ */
+
+#define	B64inunit	3
+#define	B64outunit	4
+
+/* How long will the base64 string be for a particular binary object size? */
+/* This is like strlen() and doesn't include the '\0' byte at the end */
+#define	B64_stringlen(bytes)	\
+	((((bytes)+(B64inunit-1))/B64inunit)*B64outunit)
+
+/* How many bytes to you need to malloc to store a base64 string? */
+/* (includes space for the '\0' terminator byte) */
+#define	B64_stringspace(bytes)	(B64_stringlen(bytes)+1)
+
+/* How many bytes will a base64 string take up back in binary? */
+/* Note:  This may be as much as two 2 bytes more than strictly needed */
+#define	B64_maxbytelen(slen)	(((slen) / B64outunit)*B64inunit)
+
+/* Returns strlen() of base64 string returned in "output" */
+int binary_to_base64(const void * data, int nbytes, char * output, int outlen);
+
+/* Returns the size of the binary object we returned in "output" */
+int base64_to_binary(const char * input, int inlen, void * output, int outlen);
+#endif