mirror of
https://github.com/VectorCamp/vectorscan.git
synced 2025-06-28 16:41:01 +03:00
127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 2018, Intel Corporation
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* * 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.
|
|
* * Neither the name of Intel Corporation nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/** \file
|
|
* \brief Chimera: database construction, etc.
|
|
*/
|
|
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "allocator.h"
|
|
#include "database.h"
|
|
#include "hs.h"
|
|
#include "ch.h"
|
|
#include "hs_internal.h"
|
|
#include "ch_common.h"
|
|
#include "ch_alloc.h"
|
|
#include "ch_database.h"
|
|
#include "ch_internal.h"
|
|
|
|
static really_inline
|
|
int db_correctly_aligned(const void *db) {
|
|
return ISALIGNED_N(db, alignof(unsigned long long));
|
|
}
|
|
|
|
HS_PUBLIC_API
|
|
ch_error_t HS_CDECL ch_free_database(ch_database_t *hydb) {
|
|
if (hydb && hydb->magic != CH_DB_MAGIC) {
|
|
return CH_INVALID;
|
|
}
|
|
ch_database_free(hydb);
|
|
|
|
return CH_SUCCESS;
|
|
}
|
|
|
|
HS_PUBLIC_API
|
|
ch_error_t HS_CDECL ch_database_size(const ch_database_t *hydb, size_t *size) {
|
|
if (!size) {
|
|
return CH_INVALID;
|
|
}
|
|
|
|
ch_error_t ret = hydbIsValid(hydb);
|
|
if (unlikely(ret != CH_SUCCESS)) {
|
|
return ret;
|
|
}
|
|
|
|
*size = sizeof(struct ch_database) + hydb->length;
|
|
return CH_SUCCESS;
|
|
}
|
|
|
|
/** \brief Identifier prepended to database info. */
|
|
static const char CHIMERA_IDENT[] = "Chimera ";
|
|
|
|
HS_PUBLIC_API
|
|
ch_error_t HS_CDECL ch_database_info(const ch_database_t *hydb, char **info) {
|
|
if (!info) {
|
|
return CH_INVALID;
|
|
}
|
|
*info = NULL;
|
|
|
|
if (!hydb || !db_correctly_aligned(hydb) || hydb->magic != CH_DB_MAGIC) {
|
|
return HS_INVALID;
|
|
}
|
|
|
|
const struct ch_bytecode *bytecode = ch_get_bytecode(hydb);
|
|
char noMulti = (bytecode->flags & CHIMERA_FLAG_NO_MULTIMATCH);
|
|
if (noMulti) {
|
|
size_t len = strlen(CHIMERA_IDENT);
|
|
*info = ch_misc_alloc(len + 1);
|
|
if (!(*info)) {
|
|
return CH_INVALID;
|
|
}
|
|
memcpy((*info), CHIMERA_IDENT, len);
|
|
(*info)[len] = '\0';
|
|
return CH_SUCCESS;
|
|
}
|
|
|
|
char *hsinfo = NULL;
|
|
hs_error_t ret = hs_database_info(getHyperscanDatabase(bytecode), &hsinfo);
|
|
if (ret != HS_SUCCESS) {
|
|
assert(!hsinfo);
|
|
return ret;
|
|
}
|
|
|
|
size_t hybridlen = strlen(CHIMERA_IDENT);
|
|
size_t hslen = strlen(hsinfo);
|
|
*info = ch_misc_alloc(hybridlen + hslen + 1);
|
|
if (!(*info)) {
|
|
ch_misc_free(hsinfo);
|
|
return CH_INVALID;
|
|
}
|
|
|
|
memcpy((*info), CHIMERA_IDENT, hybridlen);
|
|
memcpy((*info) + hybridlen, hsinfo, hslen);
|
|
(*info)[hybridlen + hslen] = '\0';
|
|
ch_misc_free(hsinfo);
|
|
|
|
return CH_SUCCESS;
|
|
}
|