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-rw-r--r--src/include/ipxe/base64.h15
-rw-r--r--src/include/ipxe/errfile.h1
2 files changed, 16 insertions, 0 deletions
diff --git a/src/include/ipxe/base64.h b/src/include/ipxe/base64.h
index 88c91563e..5fe134dc8 100644
--- a/src/include/ipxe/base64.h
+++ b/src/include/ipxe/base64.h
@@ -10,6 +10,7 @@
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
+#include <string.h>
/**
* Calculate length of base64-encoded data
@@ -21,6 +22,20 @@ 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 */
diff --git a/src/include/ipxe/errfile.h b/src/include/ipxe/errfile.h
index 286481362..c62a5b7d3 100644
--- a/src/include/ipxe/errfile.h
+++ b/src/include/ipxe/errfile.h
@@ -53,6 +53,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define ERRFILE_vsprintf ( ERRFILE_CORE | 0x000d0000 )
#define ERRFILE_xfer ( ERRFILE_CORE | 0x000e0000 )
#define ERRFILE_bitmap ( ERRFILE_CORE | 0x000f0000 )
+#define ERRFILE_base64 ( ERRFILE_CORE | 0x00100000 )
#define ERRFILE_eisa ( ERRFILE_DRIVER | 0x00000000 )
#define ERRFILE_isa ( ERRFILE_DRIVER | 0x00010000 )