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#ifndef BASE32_H
#define BASE32_H
/* Translates binary data into base32 (RFC 4648, Section 6). The src must not
point to dest buffer. The pad argument determines whether output is padded
with '='.
*/
void base32_encode(bool pad, const void *src, size_t src_size,
buffer_t *dest);
/* Translates binary data into base32hex (RFC 4648, Section 7). The src must
not point to dest buffer. The pad argument determines whether output is
padded with '='.
*/
void base32hex_encode(bool pad, const void *src, size_t src_size,
buffer_t *dest);
/* Translates base32/base32hex data into binary and appends it to dest buffer.
dest may point to same buffer as src. Returns 1 if all ok, 0 if end of
base32 data found, -1 if data is invalid.
Any whitespace characters are ignored.
This function may be called multiple times for parsing the same stream.
If src_pos is non-NULL, it's updated to first non-translated character in
src. */
int base32_decode(const void *src, size_t src_size,
size_t *src_pos_r, buffer_t *dest) ATTR_NULL(4);
int base32hex_decode(const void *src, size_t src_size,
size_t *src_pos_r, buffer_t *dest) ATTR_NULL(4);
/* Decode given string to a buffer allocated from data stack. */
buffer_t *t_base32_decode_str(const char *str);
buffer_t *t_base32hex_decode_str(const char *str);
/* Returns TRUE if c is a valid base32 encoding character (excluding '=') */
bool base32_is_valid_char(char c);
bool base32hex_is_valid_char(char c);
/* max. buffer size required for base32_encode()/base32hex_encode() */
#define MAX_BASE32_ENCODED_SIZE(size) \
((size) / 5 * 8 + 8)
/* max. buffer size required for base32_decode()/base32hex_decode() */
#define MAX_BASE32_DECODED_SIZE(size) \
((size) / 8 * 5 + 5)
#endif
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