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| author | Michael Brown | 2010-05-28 13:42:00 +0200 |
|---|---|---|
| committer | Michael Brown | 2010-05-28 13:47:10 +0200 |
| commit | 97ea628484be522734d074995555ffcf3884a0e0 (patch) | |
| tree | 225cc6a8867c5ea20bcfbf6ee6d1af008e7b66f4 /src/include/ipxe | |
| parent | [base64] Allow base64_encode() to handle arbitrary data (diff) | |
| download | ipxe-97ea628484be522734d074995555ffcf3884a0e0.tar.gz ipxe-97ea628484be522734d074995555ffcf3884a0e0.tar.xz ipxe-97ea628484be522734d074995555ffcf3884a0e0.zip | |
[base64] Add ability to decode base64 strings
Inspired-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include/ipxe')
| -rw-r--r-- | src/include/ipxe/base64.h | 15 | ||||
| -rw-r--r-- | src/include/ipxe/errfile.h | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/include/ipxe/base64.h b/src/include/ipxe/base64.h index 88c91563..5fe134dc 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 28648136..c62a5b7d 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 ) |