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/*
* Copyright (c) 2016 Chris Johns <chrisj.rtems.org>. All rights reserved.
*
* 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_XzChunkContext_Init(
Untar_XzChunkContext *ctx,
enum xz_mode mode,
uint32_t dict_max,
void *inflateBuffer,
size_t inflateBufferSize
)
{
int status = UNTAR_SUCCESSFUL;
xz_crc32_init();
Untar_ChunkContext_Init(&ctx->base);
ctx->inflateBuffer = inflateBuffer;
ctx->inflateBufferSize = inflateBufferSize;
ctx->strm = xz_dec_init(mode, dict_max);
if (ctx->strm == NULL) {
status = UNTAR_FAIL;
}
return status;
}
int Untar_FromXzChunk_Print(
Untar_XzChunkContext *ctx,
const void *chunk,
size_t chunk_size,
const rtems_printer *printer
)
{
int untar_status = UNTAR_SUCCESSFUL;
enum xz_ret status = XZ_OK;
if (ctx->strm == NULL)
return UNTAR_FAIL;
ctx->buf.in = (const uint8_t*) chunk;
ctx->buf.in_pos = 0;
ctx->buf.in_size = chunk_size;
ctx->buf.out = (uint8_t *) ctx->inflateBuffer;
/* Inflate until output buffer is not full */
do {
ctx->buf.out_pos = 0;
ctx->buf.out_size = ctx->inflateBufferSize;
status = xz_dec_run(ctx->strm, &ctx->buf);
if (status == XZ_OPTIONS_ERROR)
status = XZ_OK;
if (status == XZ_OK && ctx->buf.out_pos != 0) {
untar_status = Untar_FromChunk_Print(&ctx->base,
ctx->inflateBuffer,
ctx->buf.out_pos,
NULL);
if (untar_status != UNTAR_SUCCESSFUL) {
break;
}
}
} while (ctx->buf.in_pos != ctx->buf.in_size && status == XZ_OK);
if (status != XZ_OK) {
xz_dec_end(ctx->strm);
ctx->strm = NULL;
if (untar_status == UNTAR_SUCCESSFUL) {
switch (status) {
case XZ_OK:
case XZ_STREAM_END:
break;
case XZ_UNSUPPORTED_CHECK:
rtems_printf(printer, "XZ unsupported check\n");
break;
case XZ_MEM_ERROR:
rtems_printf(printer, "XZ memory allocation error\n");
break;
case XZ_MEMLIMIT_ERROR:
rtems_printf(printer, "XZ memory usage limit reached\n");
break;
case XZ_FORMAT_ERROR:
rtems_printf(printer, "Not a XZ file\n");
break;
case XZ_OPTIONS_ERROR:
rtems_printf(printer, "Unsupported options in XZ header\n");
break;
case XZ_DATA_ERROR:
rtems_printf(printer, "XZ file is corrupt (data)\n");
break;
case XZ_BUF_ERROR:
rtems_printf(printer, "XZ file is corrupt (buffer)\n");
break;
}
untar_status = UNTAR_FAIL;
}
}
return untar_status;
}
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