b64.h

/*
 * Copyright (c) 2006-2007 Secure Endpoints Inc.
 *  
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

/*
 * Copyright (c) 1999
 * The Trustees of Columbia University in the City of New York.
 * All rights reserved.
 * 
 * Permission is granted to you to use, copy, create derivative works,
 * and redistribute this software and such derivative works for any
 * purpose, so long as the name of Columbia University is not used in any
 * advertising, publicity, or for any other purpose pertaining to the use
 * or distribution of this software, other than for including the
 * copyright notice set forth herein, without specific, written prior
 * authorization.  Columbia University reserves the rights to use, copy,
 * and distribute any such derivative works for any purposes.  The above
 * copyright notice must be included in any copy of any portion of this
 * software and the disclaimer below must also be included.
 * 
 *   THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
 *   TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK AS TO ITS
 *   FITNESS FOR ANY PURPOSE, AND WITHOUT WARRANTY BY THE TRUSTEES OF
 *   COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK OF ANY KIND, EITHER
 *   EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *   THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK SHALL
 *   NOT BE LIABLE FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT,
 *   INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM
 *   ARISING OUT OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN IF
 *   IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH
 *   DAMAGES.  YOU SHALL INDEMNIFY AND HOLD HARMLESS THE TRUSTEES OF
 *   COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK, ITS EMPLOYEES AND
 *   AGENTS FROM AND AGAINST ANY AND ALL CLAIMS, DEMANDS, LOSS, DAMAGE OR
 *   EXPENSE (INCLUDING ATTORNEYS' FEES) ARISING OUT OF YOUR USE OF THIS
 *   SOFTWARE. 
 * 
 * The Trustees of Columbia University in the City of New York reserves
 * the right to revoke this permission if any of the terms of use set
 * forth above are breached.
 */ 

/*
 * Copyright  ©  2000
 * The Regents of the University of Michigan
 * ALL RIGHTS RESERVED
 *
 * permission is granted to use, copy, create derivative works 
 * and redistribute this software and such derivative works 
 * for any purpose, so long as the name of the university of 
 * michigan is not used in any advertising or publicity 
 * pertaining to the use or distribution of this software 
 * without specific, written prior authorization.  if the 
 * above copyright notice or any other identification of the 
 * university of michigan is included in any copy of any 
 * portion of this software, then the disclaimer below must 
 * also be included.
 *
 * this software is provided as is, without representation 
 * from the university of michigan as to its fitness for any 
 * purpose, and without warranty by the university of 
 * michigan of any kind, either express or implied, including 
 * without limitation the implied warranties of 
 * merchantability and fitness for a particular purpose. the 
 * regents of the university of michigan shall not be liable 
 * for any damages, including special, indirect, incidental, or 
 * consequential damages, with respect to any claim arising 
 * out of or in connection with the use of the software, even 
 * if it has been or is hereafter advised of the possibility of 
 * such damages.
 */

#ifndef _B64_H_
#define _B64_H_

int b64_decode(char *string, int len, char *out);
void b64_do_decode(char *bitstring, char *out, int *b64_cnt);
void b64_dodecode_padding(char *bitstring, int pad, char *out, int *b64_cnt);
void _b64_init(void);

#ifdef _REENTRANT
# include <pthread.h>
# define b64_init(); { pthread_once_t ctl = PTHREAD_ONCE_INIT; pthread_once(&ctl,_b64_init); }
#else /* !_REENTRANT */
# define b64_init(); _b64_init();
#endif /* !_REENTRANT */

int b64_encode(char *string, int len, char *out);
void b64_do_encode(char *bitstring, char *out, int *b64_cnt);
void b64_doencode_padding(char *bitstring, int pad, char *out, int *b64_cnt);

/*
static char b64_encoding[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
char b64_decoding[256];*/
extern int b64_init_done;
extern int b64_cnt;

#endif /* _B64_H_ */