app_base64.h

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/*****************************************************************************
 *
 * Filename:
 * ---------
 * app_base64.h
 *
 * Project:
 * --------
 *   MAUI
 *
 * Description:
 * ------------
 *   This file contains Base64 decode / encode function prototypes.
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
 * removed!
 *
 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/

#ifndef _APP_BASE64_H
#define _APP_BASE64_H

/*
 * Decode macros
 */
#define APP_BASE64_BUF_LEN    128
#define BJNK            0177
#define BPAD            0100

/*
 * Encode macros
 */
#define APP_BASE64_ENCODE_1(dst,src,destlen) do {                                                                    \
    if(destlen < 4)                                                                                                  \
       return -1;                                                                                                    \
    *dst++ = app_base64_encode[src[0] >> 2];  /* byte 1: high 6 bits (1) */                                          \
    *dst++ = app_base64_encode[((src[0] << 4) + (src[1] >> 4)) & 0x3f]; /* byte 2: low 2 bits (1), high 4 bits (2) */\
    *dst++ = app_base64_encode[((src[1] << 2) + (src[2] >> 6)) & 0x3f]; /* byte 3: low 4 bits (2), high 2 bits (3) */\
    *dst++ = app_base64_encode[src[2] & 0x3f];                          /* byte 4: low 6 bits (3) */                 \
    destlen -= 4 ; } while(0)

#define APP_BASE64_ENCODE_2(dst,src,buflen,destlen) do {                                                                                              \
    if(destlen < 2)                                                                                                                                   \
       return -1;                                                                                                                                     \
    *dst++ = app_base64_encode[src[0] >> 2]; /* byte 1: high 6 bits (1) */                                                                            \
    *dst++ = app_base64_encode[((src[0] << 4) + (--buflen ? (src[1] >> 4) : 0)) & 0x3f]; /* byte 2: low 2 bits (1), high 4 bits (2) */                \
    destlen -= 4;                                                                                                                                     \
    if(destlen < 1)                                                                                                                                   \
       return -1;                                                                                                                                     \
    *dst++ = buflen ? app_base64_encode[((src[1] << 2) + (--buflen ? (src[2] >> 6) : 0)) & 0x3f] : '='; /* byte 3: low 4 bits (2), high 2 bits (3) */ \
    destlen--;                                                                                                                                        \
    if(destlen < 1)                                                                                                                                   \
       return -1;                                                                                                                                     \
    *dst++ = buflen ? app_base64_encode[src[2] & 0x3f] : '='; /* byte 4: low 6 bits (3) */                                                            \
    destlen--; } while(0)

extern kal_int32 applib_base64_decode(kal_char *src, kal_uint32 srcl, kal_char *dest, kal_uint32 destl);

extern kal_uint16 applib_find_base64_boundary(kal_char *ptr, kal_int32 len);

extern kal_int32 applib_base64_encode(kal_char *src, kal_uint32 srcl, kal_char *dest, kal_uint32 destl);

#endif /* _APP_BASE64_H */