/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2020 embedded brains GmbH & Co. KG
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/recorddump.h>
#include <limits.h>
#include <string.h>
#include <rtems/base64.h>
static void *dump_zalloc( void *opaque, unsigned items, unsigned size )
{
rtems_record_dump_base64_zlib_context *ctx;
char *mem_begin;
size_t mem_available;
ctx = opaque;
size *= items;
mem_available = ctx->mem_available;
if ( mem_available < size ) {
return NULL;
}
mem_begin = ctx->mem_begin;
ctx->mem_begin = mem_begin + size;
ctx->mem_available = mem_available - size;
return mem_begin;
}
static void dump_zfree( void *opaque, void *ptr )
{
(void) opaque;
(void) ptr;
}
static void put_char( int c, void *arg )
{
rtems_record_dump_base64_zlib_context *ctx;
ctx = arg;
( *ctx->put_char )( c, ctx->arg );
++ctx->out;
if ( ctx->out >= 76 ) {
ctx->out = 0;
( *ctx->put_char )( '\n', ctx->arg );
}
}
static void chunk( void *arg, const void *data, size_t length )
{
rtems_record_dump_base64_zlib_context *ctx;
ctx = arg;
ctx->stream.next_in = RTEMS_DECONST( void *, data );
ctx->stream.avail_in = length;
while ( ctx->stream.avail_in > 0 ) {
int err;
err = deflate( &ctx->stream, Z_NO_FLUSH );
if ( err != Z_OK ) {
return;
}
if ( ctx->stream.avail_out == 0 ) {
ctx->stream.next_out = &ctx->buf[ 0 ];
ctx->stream.avail_out = sizeof( ctx->buf );
_Base64_Encode( put_char, ctx, ctx->buf, sizeof( ctx->buf ), NULL, INT_MAX );
}
}
}
static void flush( rtems_record_dump_base64_zlib_context *ctx )
{
while ( true ) {
int err;
err = deflate( &ctx->stream, Z_FINISH );
if ( err != Z_OK ) {
break;
}
if ( ctx->stream.avail_out == 0 ) {
ctx->stream.next_out = &ctx->buf[ 0 ];
ctx->stream.avail_out = sizeof( ctx->buf );
_Base64_Encode( put_char, ctx, ctx->buf, sizeof( ctx->buf ), NULL, INT_MAX );
}
}
_Base64_Encode(
put_char,
ctx,
ctx->buf,
sizeof( ctx->buf ) - ctx->stream.avail_out,
NULL,
INT_MAX
);
}
void rtems_record_dump_zlib_base64(
rtems_record_dump_base64_zlib_context *ctx,
void ( *put_char )( int, void * ),
void *arg
)
{
int err;
ctx->put_char = put_char;
ctx->arg = arg;
ctx->out = 0;
ctx->stream.zalloc = dump_zalloc;
ctx->stream.zfree = dump_zfree;
ctx->stream.opaque = ctx;
ctx->mem_begin = &ctx->mem[ 0 ];
ctx->mem_available = sizeof( ctx->mem );
err = deflateInit( &ctx->stream, Z_BEST_COMPRESSION );
if (err != Z_OK) {
return;
}
ctx->stream.next_out = &ctx->buf[ 0 ];
ctx->stream.avail_out = sizeof( ctx->buf );
rtems_record_dump( chunk, ctx );
flush( ctx );
deflateEnd( &ctx->stream );
}
