1 files changed, 41 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/include/ipxe/base64.h b/qemu/roms/ipxe/src/include/ipxe/base64.h
new file mode 100644
index 000000000..5fe134dc8
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/base64.h
@@ -0,0 +1,41 @@
+#ifndef _IPXE_BASE64_H
+#define _IPXE_BASE64_H
+
+/** @file
+ *
+ * Base64 encoding
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <string.h>
+
+/**
+ * Calculate length of base64-encoded data
+ *
+ * @v raw_len		Raw data length
+ * @ret encoded_len	Encoded string length (excluding NUL)
+ */
+static inline size_t base64_encoded_len ( size_t raw_len ) {
+	return ( ( ( raw_len + 3 - 1 ) / 3 ) * 4 );
+}
+
+/**
+ * Calculate maximum length of base64-decoded string
+ *
+ * @v encoded		Encoded string
+ * @v max_raw_len	Maximum length of raw data
+ *
+ * Note that the exact length of the raw data cannot be known until
+ * the string is decoded.
+ */
+static inline size_t base64_decoded_max_len ( const char *encoded ) {
+	return ( ( ( strlen ( encoded ) + 4 - 1 ) / 4 ) * 3 );
+}
+
+extern void base64_encode ( const uint8_t *raw, size_t len, char *encoded );
+extern int base64_decode ( const char *encoded, uint8_t *raw );
+
+#endif /* _IPXE_BASE64_H */