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/*
* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <info@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#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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