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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2016 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 <string.h>
#include <rtems/untar.h>
int Untar_GzChunkContext_Init(
Untar_GzChunkContext *ctx,
void *inflateBuffer,
size_t inflateBufferSize
)
{
int ret;
int status = UNTAR_SUCCESSFUL;
Untar_ChunkContext_Init(&ctx->base);
ctx->inflateBuffer = inflateBuffer;
ctx->inflateBufferSize = inflateBufferSize;
memset(&ctx->strm, 0, sizeof(ctx->strm));
ret = inflateInit2(&ctx->strm, 32 + MAX_WBITS);
if (ret != Z_OK){
status = UNTAR_FAIL;
}
return status;
}
int Untar_FromGzChunk_Print(
Untar_GzChunkContext *ctx,
void *chunk,
size_t chunk_size,
const rtems_printer *printer
)
{
int untar_succesful;
int status;
ctx->strm.next_in = (Bytef *)chunk;
ctx->strm.avail_in = (size_t)chunk_size;
/* Inflate until output buffer is not full */
do {
ctx->strm.next_out = (Bytef *) ctx->inflateBuffer;
ctx->strm.avail_out = ctx->inflateBufferSize;
status = inflate(&ctx->strm, Z_NO_FLUSH);
if (status == Z_OK || status == Z_STREAM_END) {
size_t inflated_size =
ctx->inflateBufferSize - ctx->strm.avail_out;
untar_succesful = Untar_FromChunk_Print(&ctx->base,
ctx->inflateBuffer, inflated_size, NULL);
if (untar_succesful != UNTAR_SUCCESSFUL){
return untar_succesful;
}
} else {
untar_succesful = UNTAR_GZ_INFLATE_FAILED;
}
} while (ctx->strm.avail_out == 0 && ctx->strm.avail_in > 0
&& status == Z_OK);
if (status != Z_OK) {
if (untar_succesful != UNTAR_SUCCESSFUL){
rtems_printf(printer, "Untar not successful\n");
}
if (status != Z_STREAM_END) {
rtems_printf(printer, "Zlib inflate failed\n");
}
status = inflateEnd(&ctx->strm);
if (status != Z_OK) {
rtems_printf(printer, "Zlib inflate end failed\n");
}
}
return untar_succesful;
}
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