diff options
Diffstat (limited to 'plugins/MirOTR/libotr/src/b64.h')
| -rw-r--r-- | plugins/MirOTR/libotr/src/b64.h | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/plugins/MirOTR/libotr/src/b64.h b/plugins/MirOTR/libotr/src/b64.h index 34ef03f416..bdd584a45e 100644 --- a/plugins/MirOTR/libotr/src/b64.h +++ b/plugins/MirOTR/libotr/src/b64.h @@ -1,6 +1,7 @@ /* * Off-the-Record Messaging library - * Copyright (C) 2004-2008 Ian Goldberg, Chris Alexander, Nikita Borisov + * Copyright (C) 2004-2012 Ian Goldberg, Chris Alexander, Willy Lew, + * Nikita Borisov * <otr@cypherpunks.ca> * * This library is free software; you can redistribute it and/or @@ -14,12 +15,25 @@ * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __B64_H__ #define __B64_H__ +#include <stdlib.h> + +/* Base64 encodes blocks of this many bytes: */ +#define OTRL_B64_DECODED_LEN 3 +/* into blocks of this many bytes: */ +#define OTRL_B64_ENCODED_LEN 4 + +/* An encoded block of length encoded_len can turn into a maximum of + * this many decoded bytes: */ +#define OTRL_B64_MAX_DECODED_SIZE(encoded_len) \ + (((encoded_len + OTRL_B64_ENCODED_LEN - 1) / OTRL_B64_ENCODED_LEN) \ + * OTRL_B64_DECODED_LEN) + /* * base64 encode data. Insert no linebreaks or whitespace. * @@ -33,8 +47,9 @@ size_t otrl_base64_encode(char *base64data, const unsigned char *data, * base64 decode data. Skip non-base64 chars, and terminate at the * first '=', or the end of the buffer. * - * The buffer data must contain at least (base64len / 4) * 3 bytes of - * space. This function will return the number of bytes actually used. + * The buffer data must contain at least ((base64len+3) / 4) * 3 bytes + * of space. This function will return the number of bytes actually + * used. */ size_t otrl_base64_decode(unsigned char *data, const char *base64data, size_t base64len); |