mirror of https://github.com/Cisco-Talos/clamav
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
2.4 KiB
78 lines
2.4 KiB
/*
|
|
* Copyright (C) 2013 Sourcefire, Inc.
|
|
*
|
|
* Authors: Steven Morgan (smorgan@sourcefire.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
|
|
#if HAVE_CONFIG_H
|
|
#include "clamav-config.h"
|
|
#endif
|
|
|
|
#include "7z/Sha256.h"
|
|
#include "7z/XzCrc64.h"
|
|
#include "xz_iface.h"
|
|
|
|
void *__xz_wrap_alloc(void *unused, size_t size) {
|
|
if(!size || size > CLI_MAX_ALLOCATION)
|
|
return NULL;
|
|
unused = unused;
|
|
if(!size || size > CLI_MAX_ALLOCATION) {
|
|
cli_dbgmsg("xz_iface: Attempt to allocate %lu bytes exceeds CLI_MAX_ALLOCATION.\n",
|
|
(unsigned long int) size);
|
|
return NULL;
|
|
}
|
|
return cli_malloc(size);
|
|
}
|
|
void __xz_wrap_free(void *unused, void *freeme) {
|
|
unused = unused;
|
|
free(freeme);
|
|
}
|
|
|
|
static ISzAlloc g_Alloc = { __xz_wrap_alloc, __xz_wrap_free };
|
|
|
|
int cli_XzInit(struct CLI_XZ *XZ) {
|
|
if (SZ_OK != XzUnpacker_Create(&XZ->state, &g_Alloc))
|
|
return XZ_RESULT_DATA_ERROR;
|
|
if (g_Crc64Table[1] == 0)
|
|
Crc64GenerateTable();
|
|
return XZ_RESULT_OK;
|
|
}
|
|
|
|
void cli_XzShutdown(struct CLI_XZ *XZ) {
|
|
XzUnpacker_Free(&XZ->state);
|
|
}
|
|
|
|
int cli_XzDecode(struct CLI_XZ *XZ) {
|
|
SRes res;
|
|
SizeT outbytes, inbytes;
|
|
|
|
inbytes = XZ->avail_in;
|
|
outbytes = XZ->avail_out;
|
|
res = XzUnpacker_Code(&XZ->state, XZ->next_out, &outbytes,
|
|
XZ->next_in, &inbytes, CODER_FINISH_ANY, &XZ->status);
|
|
XZ->avail_in -= inbytes;
|
|
XZ->next_in += inbytes;
|
|
XZ->avail_out -= outbytes;
|
|
XZ->next_out += outbytes;
|
|
if (XZ->status == CODER_STATUS_FINISHED_WITH_MARK || XzUnpacker_IsStreamWasFinished(&XZ->state))
|
|
return XZ_STREAM_END;
|
|
if (XZ->status == CODER_STATUS_NOT_FINISHED && XZ->avail_out == 0)
|
|
return XZ_RESULT_OK;
|
|
if (res != SZ_OK)
|
|
return XZ_RESULT_DATA_ERROR;
|
|
return XZ_RESULT_OK;
|
|
}
|
|
|