libtrace/record/record-dump-base64.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (C) 2020 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #ifdef HAVE_CONFIG_H
0029 #include "config.h"
0030 #endif
0031
0032 #include <rtems/recorddump.h>
0033
0034 #include <limits.h>
0035 #include <string.h>
0036
0037 #include <rtems/base64.h>
0038
0039 typedef struct {
0040   IO_Put_char  put_char;
0041   void        *arg;
0042   int          out;
0043   size_t       index;
0044   char         buf[ 57 ];
0045 } dump_context;
0046
0047 static void put_char( int c, void *arg )
0048 {
0049   dump_context *ctx;
0050
0051   ctx = arg;
0052
0053   ( *ctx->put_char )( c, ctx->arg );
0054   ++ctx->out;
0055
0056   if ( ctx->out >= 76 ) {
0057     ctx->out = 0;
0058     ( *ctx->put_char )( '\n', ctx->arg );
0059   }
0060 }
0061
0062 static void chunk( void *arg, const void *data, size_t length )
0063 {
0064   dump_context *ctx;
0065   size_t        index;
0066   const char   *in;
0067   const void   *end;
0068
0069   ctx = arg;
0070   index = ctx->index;
0071   in = data;
0072   end = in + length;
0073
0074   while ( in != end ) {
0075     ctx->buf[ index ] = *in;
0076     ++in;
0077
0078     if ( index == RTEMS_ARRAY_SIZE( ctx->buf ) - 1 ) {
0079       index = 0;
0080       _Base64_Encode(
0081         put_char,
0082         ctx,
0083         ctx->buf,
0084         sizeof( ctx->buf ),
0085         NULL,
0086         INT_MAX
0087       );
0088     } else {
0089       ++index;
0090     }
0091   }
0092
0093   ctx->index = index;
0094 }
0095
0096 static void flush( dump_context *ctx )
0097 {
0098   _Base64_Encode( put_char, ctx, ctx->buf, ctx->index, NULL, INT_MAX );
0099 }
0100
0101 void rtems_record_dump_base64( IO_Put_char put_char, void *arg )
0102 {
0103   dump_context ctx;
0104
0105   memset( &ctx, 0, sizeof( ctx ) );
0106   ctx.put_char = put_char;
0107   ctx.arg = arg;
0108
0109   rtems_record_dump( chunk, &ctx );
0110   flush( &ctx );
0111 }