summaryrefslogtreecommitdiffstats
path: root/contrib/base64.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--contrib/base64.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/contrib/base64.h b/contrib/base64.h
new file mode 100644
index 0000000..153aa72
--- /dev/null
+++ b/contrib/base64.h
@@ -0,0 +1,95 @@
+/* Copyright (C) CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+/*!
+ * \file
+ *
+ * \brief Base64 implementation (RFC 4648).
+ *
+ * \addtogroup contrib
+ * @{
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+/*!
+ * \brief Encodes binary data using Base64.
+ *
+ * \note Output data buffer contains Base64 text string which isn't
+ * terminated with '\0'!
+ *
+ * \param in Input binary data.
+ * \param in_len Length of input data.
+ * \param out Output data buffer.
+ * \param out_len Size of output buffer.
+ *
+ * \retval >=0 length of output string.
+ * \retval KNOT_E* if error.
+ */
+int32_t kr_base64_encode(const uint8_t *in,
+ const uint32_t in_len,
+ uint8_t *out,
+ const uint32_t out_len);
+
+/*!
+ * \brief Encodes binary data using Base64 and output stores to own buffer.
+ *
+ * \note Output data buffer contains Base64 text string which isn't
+ * terminated with '\0'!
+ *
+ * \note Output buffer should be deallocated after use.
+ *
+ * \param in Input binary data.
+ * \param in_len Length of input data.
+ * \param out Output data buffer.
+ *
+ * \retval >=0 length of output string.
+ * \retval KNOT_E* if error.
+ */
+int32_t kr_base64_encode_alloc(const uint8_t *in,
+ const uint32_t in_len,
+ uint8_t **out);
+
+/*!
+ * \brief Decodes text data using Base64.
+ *
+ * \note Input data needn't be terminated with '\0'.
+ *
+ * \note Input data must be continuous Base64 string!
+ *
+ * \param in Input text data.
+ * \param in_len Length of input string.
+ * \param out Output data buffer.
+ * \param out_len Size of output buffer.
+ *
+ * \retval >=0 length of output data.
+ * \retval KNOT_E* if error.
+ */
+int32_t kr_base64_decode(const uint8_t *in,
+ const uint32_t in_len,
+ uint8_t *out,
+ const uint32_t out_len);
+
+/*!
+ * \brief Decodes text data using Base64 and output stores to own buffer.
+ *
+ * \note Input data needn't be terminated with '\0'.
+ *
+ * \note Input data must be continuous Base64 string!
+ *
+ * \note Output buffer should be deallocated after use.
+ *
+ * \param in Input text data.
+ * \param in_len Length of input string.
+ * \param out Output data buffer.
+ *
+ * \retval >=0 length of output data.
+ * \retval KNOT_E* if error.
+ */
+int32_t kr_base64_decode_alloc(const uint8_t *in,
+ const uint32_t in_len,
+ uint8_t **out);
+
+/*! @} */