/*
* Copyright (C) 2006 Sensory Networks, Inc.
* Written by Tomasz Kojm, dlopen() support by Peter Duthie
*
* 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
#ifdef HAVE_NCORE
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <ctype.h>
#ifdef HAVE_NCORE
#include <dlfcn.h>
#endif
#include "clamav.h"
#include "matcher.h"
#include "cltypes.h"
#include "md5.h"
#include "readdb.h"
#include "str.h"
#include "matcher-ncore.h"
#define HWBUFFSIZE 32768
/* Globals */
static void *g_ncore_dllhandle = 0;
static const char *g_ncore_dllpath = "/usr/lib/libsn_sigscan.so";
/* Function pointer types */
typedef int (*sn_sigscan_initdb_t)(void **);
typedef int (*sn_sigscan_loaddb_t)(void *dbhandle, const char *filename,
int devicenum, unsigned int *count);
typedef int (*sn_sigscan_load2dbs_t)(void *dbhandle, const char *baseFilename,
const char *incrFilename, int devicenum, unsigned int *count);
typedef int (*sn_sigscan_closedb_t)(void *dbhandle);
typedef int (*sn_sigscan_createstream_t)(void *dbhandle,
const uint32_t *dbMaskData, unsigned int dbMaskWords,
void **streamhandle);
typedef int (*sn_sigscan_writestream_t)(void *streamhandle, const char *buffer,
unsigned int len);
typedef int (*sn_sigscan_closestream_t)(void *streamhandle,
void **resulthandle);
typedef int (*sn_sigscan_resultcount_t)(void *resulthandle);
typedef int (*sn_sigscan_resultget_name_t)(void *resulthandle,
unsigned int index, const char **matchname);
typedef int (*sn_sigscan_resultget_startoffset_t)(void *resulthandle,
unsigned int index, unsigned long long *startoffset);
typedef int (*sn_sigscan_resultget_endoffset_t)(void *resulthandle,
unsigned int index, unsigned long long *endoffset);
typedef int (*sn_sigscan_resultget_targettype_t)(void *resulthandle,
unsigned int index, int *targettype);
typedef int (*sn_sigscan_resultget_offsetstring_t)(void *resulthandle,
unsigned int index, const char **offsetstring);
typedef int (*sn_sigscan_resultget_extradata_t)(void *resulthandle,
unsigned int index, const char **optionalsigdata);
typedef int (*sn_sigscan_resultfree_t)(void *resulthandle);
typedef void (*sn_sigscan_error_function_t)(const char *msg);
typedef int (*sn_sigscan_seterrorlogger_t)(sn_sigscan_error_function_t errfn);
/* Function pointer values */
sn_sigscan_initdb_t sn_sigscan_initdb_f = 0;
sn_sigscan_loaddb_t sn_sigscan_loaddb_f = 0;
sn_sigscan_load2dbs_t sn_sigscan_load2dbs_f = 0;
sn_sigscan_closedb_t sn_sigscan_closedb_f = 0;
sn_sigscan_createstream_t sn_sigscan_createstream_f = 0;
sn_sigscan_writestream_t sn_sigscan_writestream_f = 0;
sn_sigscan_closestream_t sn_sigscan_closestream_f = 0;
sn_sigscan_resultcount_t sn_sigscan_resultcount_f = 0;
sn_sigscan_resultget_name_t sn_sigscan_resultget_name_f = 0;
sn_sigscan_resultget_startoffset_t sn_sigscan_resultget_startoffset_f = 0;
sn_sigscan_resultget_endoffset_t sn_sigscan_resultget_endoffset_f = 0;
sn_sigscan_resultget_targettype_t sn_sigscan_resultget_targettype_f = 0;
sn_sigscan_resultget_offsetstring_t sn_sigscan_resultget_offsetstring_f = 0;
sn_sigscan_resultget_extradata_t sn_sigscan_resultget_extradata_f = 0;
sn_sigscan_resultfree_t sn_sigscan_resultfree_f = 0;
sn_sigscan_seterrorlogger_t sn_sigscan_seterrorlogger_f = 0;
static int cli_ncore_dlinit()
{
if(access(g_ncore_dllpath, R_OK) == -1) {
cli_dbgmsg("cli_ncore_dlinit: Can't access %s\n", g_ncore_dllpath);
return CL_ENCINIT;
}
g_ncore_dllhandle = dlopen(g_ncore_dllpath, RTLD_NOW | RTLD_LOCAL);
if(!g_ncore_dllhandle) {
cli_dbgmsg("cli_ncore_dlinit: dlopen() failed for %s\n", g_ncore_dllpath);
return CL_ENCINIT;
}
/* get the symbols */
sn_sigscan_initdb_f = (sn_sigscan_initdb_t)dlsym(g_ncore_dllhandle, "sn_sigscan_initdb");
sn_sigscan_loaddb_f = (sn_sigscan_loaddb_t)dlsym(g_ncore_dllhandle, "sn_sigscan_loaddb");
sn_sigscan_load2dbs_f = (sn_sigscan_load2dbs_t)dlsym(g_ncore_dllhandle, "sn_sigscan_load2dbs");
sn_sigscan_closedb_f = (sn_sigscan_closedb_t)dlsym(g_ncore_dllhandle, "sn_sigscan_closedb");
sn_sigscan_createstream_f = (sn_sigscan_createstream_t)dlsym(g_ncore_dllhandle, "sn_sigscan_createstream");
sn_sigscan_writestream_f = (sn_sigscan_writestream_t)dlsym(g_ncore_dllhandle, "sn_sigscan_writestream");
sn_sigscan_closestream_f = (sn_sigscan_closestream_t)dlsym(g_ncore_dllhandle, "sn_sigscan_closestream");
sn_sigscan_resultcount_f = (sn_sigscan_resultcount_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultcount");
sn_sigscan_resultget_name_f = (sn_sigscan_resultget_name_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultget_name");
sn_sigscan_resultget_startoffset_f = (sn_sigscan_resultget_startoffset_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultget_startoffset");
sn_sigscan_resultget_endoffset_f = (sn_sigscan_resultget_endoffset_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultget_endoffset");
sn_sigscan_resultget_targettype_f = (sn_sigscan_resultget_targettype_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultget_targettype");
sn_sigscan_resultget_offsetstring_f = (sn_sigscan_resultget_offsetstring_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultget_offsetstring");
sn_sigscan_resultget_extradata_f = (sn_sigscan_resultget_extradata_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultget_extradata");
sn_sigscan_resultfree_f = (sn_sigscan_resultfree_t)dlsym(g_ncore_dllhandle, "sn_sigscan_resultfree");
sn_sigscan_seterrorlogger_f = (sn_sigscan_seterrorlogger_t)dlsym(g_ncore_dllhandle, "sn_sigscan_seterrorlogger");
/* Check that we got all the symbols */
if(sn_sigscan_initdb_f && sn_sigscan_loaddb_f && sn_sigscan_load2dbs_f &&
sn_sigscan_closedb_f && sn_sigscan_createstream_f &&
sn_sigscan_writestream_f && sn_sigscan_closestream_f &&
sn_sigscan_resultcount_f && sn_sigscan_resultget_name_f &&
sn_sigscan_resultget_startoffset_f &&
sn_sigscan_resultget_endoffset_f &&
sn_sigscan_resultget_targettype_f &&
sn_sigscan_resultget_offsetstring_f &&
sn_sigscan_resultget_extradata_f && sn_sigscan_resultfree_f &&
sn_sigscan_seterrorlogger_f)
{
return CL_SUCCESS;
}
dlclose(g_ncore_dllhandle);
g_ncore_dllhandle = 0;
return CL_ENCINIT;
}
int cli_ncore_scanbuff(const char *buffer, unsigned int length, const char **virname, const struct cl_engine *engine, unsigned short ftype, unsigned int *targettab)
{
void *streamhandle;
void *resulthandle;
static const uint32_t datamask[2] = { 0xffffffff, 0xffffffff };
int count, hret, i;
char *pt;
int ret = CL_CLEAN;
/* TODO: Setup proper data bitmask (need specs) */
/* Create the hardware scanning stream */
hret = (*sn_sigscan_createstream_f)(engine->ncdb, datamask, 2, &streamhandle);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: can't create new hardware stream: %d\n", hret);
return CL_ENCIO;
}
/* Write data to the hardware scanning stream */
hret = (*sn_sigscan_writestream_f)(streamhandle, buffer, length);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: can't write %u bytes to hardware stream: %d\n", length, hret);
(*sn_sigscan_closestream_f)(streamhandle, &resulthandle);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_ENCIO;
}
/* Close the hardware scanning stream and collect the result */
hret = (*sn_sigscan_closestream_f)(streamhandle, &resulthandle);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: can't close hardware stream: %d\n", hret);
return CL_ENCIO;
}
/* Iterate through the results */
count = (*sn_sigscan_resultcount_f)(resulthandle);
for(i = 0; i < count; i++) {
const char *matchname = NULL, *offsetstring = NULL, *optionalsigdata = NULL;
unsigned int targettype = 0;
/* Acquire the name of the result */
hret = (*sn_sigscan_resultget_name_f)(resulthandle, i, &matchname);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: sn_sigscan_resultget_name failed for result %u: %d\n", i, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_ENCIO;
}
if(!matchname) {
cli_errmsg("cli_ncore_scanbuff: HW Result[%u]: Signature without name\n", i);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_EMALFDB;
}
/* Acquire the result file type and check that it is correct */
hret = (*sn_sigscan_resultget_targettype_f)(resulthandle, i, &targettype);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: sn_sigscan_resultget_targettype failed for result %u, signature %s: %d\n", i, matchname, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_ENCIO;
}
if(targettype && targettab[targettype] != ftype) {
cli_dbgmsg("cli_ncore_scanbuff: HW Result[%u]: %s: Target type: %u, expected: %u\n", i, matchname, targettab[targettype], ftype);
continue;
}
hret = (*sn_sigscan_resultget_offsetstring_f)(resulthandle, i, &offsetstring);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: sn_sigscan_resultget_offsetstring failed for result %u, signature %s: %d\n", i, matchname, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_ENCIO;
}
if(offsetstring) {
cli_dbgmsg("cli_ncore_scanbuff: HW Result[%u]: %s: Offset based signature not supported in buffer mode\n", i, matchname);
continue;
}
hret = (*sn_sigscan_resultget_extradata_f)(resulthandle, i, &optionalsigdata);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: sn_sigscan_resultget_extradata failed for result %u, signature %s: %d\n", i, matchname, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_ENCIO;
}
if(optionalsigdata && strlen(optionalsigdata)) {
pt = cli_strtok(optionalsigdata, 1, ":");
if(pt) {
if(!isdigit(*pt)) {
free(pt);
cli_errmsg("cli_ncore_scanbuff: HW Result[%u]: %s: Incorrect optional signature data: %s\n", i, matchname, optionalsigdata);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_EMALFDB;
}
if((unsigned int) atoi(pt) < cl_retflevel()) {
cli_dbgmsg("cli_ncore_scanbuff: HW Result[%u]: %s: Signature max flevel: %d, current: %d\n", i, matchname, atoi(pt), cl_retflevel());
free(pt);
continue;
}
free(pt);
pt = cli_strtok(optionalsigdata, 0, ":");
if(pt) {
if(!isdigit(*pt)) {
free(pt);
cli_errmsg("cli_ncore_scanbuff: HW Result[%u]: %s: Incorrect optional signature data: %s\n", i, matchname, optionalsigdata);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_EMALFDB;
}
if((unsigned int) atoi(pt) > cl_retflevel()) {
cli_dbgmsg("cli_ncore_scanbuff: HW Result[%u]: %s: Signature required flevel: %u, current: %u\n", i, matchname, atoi(pt), cl_retflevel());
free(pt);
continue;
}
free(pt);
}
} else {
if(!isdigit(*optionalsigdata)) {
cli_errmsg("cli_ncore_scanbuff: HW Result[%u]: %s: Incorrect optional signature data: %s\n", i, matchname, optionalsigdata);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_EMALFDB;
}
if((unsigned int) atoi(optionalsigdata) > cl_retflevel()) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Signature required flevel: %u, current: %u\n", i, matchname, atoi(optionalsigdata), cl_retflevel());
continue;
}
}
}
/* Store the name of the match */
*virname = matchname;
ret = CL_VIRUS;
break;
}
/* Clean up the result structure */
hret = (*sn_sigscan_resultfree_f)(resulthandle);
if(hret) {
cli_errmsg("cli_ncore_scanbuff: can't free results: %d\n", ret);
return CL_ENCIO;
}
return ret;
}
int cli_ncore_scandesc(int desc, cli_ctx *ctx, unsigned short ftype, int *cont, unsigned int *targettab, cli_md5_ctx *md5ctx)
{
void *streamhandle;
void *resulthandle;
uint32_t datamask[2] = { 0xffffffff, 0xffffffff };
struct cli_target_info info;
int i, count, hret, bytes, ret = CL_CLEAN;
off_t origoff;
*cont = 0;
char *buffer;
/* TODO: Setup proper data bitmask (need specs) */
/* Create the hardware scanning stream */
hret = (*sn_sigscan_createstream_f)(ctx->engine->ncdb, datamask, 2, &streamhandle);
if(hret) {
cli_errmsg("cli_ncore_scandesc: can't create new hardware stream: %d\n", hret);
return CL_ENCIO;
}
/* Obtain the initial offset */
origoff = lseek(desc, 0, SEEK_CUR);
if(origoff == -1) {
cli_errmsg("cli_ncore_scandesc: lseek() failed for descriptor %d\n", desc);
(*sn_sigscan_closestream_f)(streamhandle, &resulthandle);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_EIO;
}
buffer = (char *) cli_calloc(HWBUFFSIZE, sizeof(char));
if(!buffer) {
cli_dbgmsg("cli_ncore_scandesc: unable to cli_calloc(%u)\n", HWBUFFSIZE);
(*sn_sigscan_closestream_f)(streamhandle, &resulthandle);
(*sn_sigscan_resultfree_f)(resulthandle);
return CL_EMEM;
}
/* Initialize the MD5 hasher */
if(ctx->engine->md5_hlist)
MD5_Init(md5ctx);
/* Read and scan the data */
while ((bytes = cli_readn(desc, buffer, HWBUFFSIZE)) > 0) {
hret = (*sn_sigscan_writestream_f)(streamhandle, buffer, bytes);
if(hret) {
cli_errmsg("cli_ncore_scandesc: can't write to hardware stream: %d\n", hret);
ret = CL_ENCIO;
break;
} else {
if(ctx->scanned)
*ctx->scanned += bytes / CL_COUNT_PRECISION;
if(ctx->engine->md5_hlist)
MD5_Update(md5ctx, buffer, bytes);
}
}
free(buffer);
/* Close the stream and get the result */
hret = (*sn_sigscan_closestream_f)(streamhandle, &resulthandle);
if(hret) {
cli_errmsg("cli_ncore_scandesc: can't close hardware stream: %d\n", hret);
return CL_ENCIO;
}
memset(&info, 0, sizeof(info));
/* Iterate over the list of results */
count = (*sn_sigscan_resultcount_f)(resulthandle);
for(i = 0; i < count; i++) {
const char *matchname = NULL, *offsetstring = NULL, *optionalsigdata = NULL;
unsigned long long startoffset = 0;
unsigned int targettype = 0, maxshift = 0;
char *pt;
/* Get the description of the match */
hret = (*sn_sigscan_resultget_name_f)(resulthandle, i, &matchname);
if(hret) {
cli_errmsg("cli_ncore_scandesc: sn_sigscan_resultget_name failed for result %u: %d\n", i, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_ENCIO;
}
if(!matchname) {
cli_errmsg("cli_ncore_scandesc: HW Result[%u]: Signature without name\n", i);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_EMALFDB;
}
hret = (*sn_sigscan_resultget_targettype_f)(resulthandle, i, &targettype);
if(hret) {
cli_errmsg("cli_ncore_scandesc: sn_sigscan_resultget_targettype failed for result %d, signature %s: %d\n", i, matchname, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_ENCIO;
}
if(targettype && targettab[targettype] != ftype) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Target type: %u, expected: %d\n", i, matchname, targettab[targettype], ftype);
continue;
}
hret = (*sn_sigscan_resultget_offsetstring_f)(resulthandle, i, &offsetstring);
if(hret) {
cli_errmsg("cli_ncore_scandesc: sn_sigscan_resultget_offsetstring failed for result %u, signature %s: %d\n", i, matchname, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_ENCIO;
}
hret = (*sn_sigscan_resultget_startoffset_f)(resulthandle, i, &startoffset);
if(hret) {
cli_errmsg("cli_ncore_scandesc: sn_sigscan_resultget_startoffset failed for result %u, signature %s: %d\n", i, matchname, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_ENCIO;
}
if(offsetstring && strcmp(offsetstring, "*")) {
off_t off = cli_caloff(offsetstring, &info, desc, ftype, &hret, &maxshift);
if(hret == -1) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Bad offset in signature\n", i, matchname);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_EMALFDB;
}
if(maxshift) {
if((startoffset < (unsigned long long) off) || (startoffset > (unsigned long long) off + maxshift)) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Virus offset: %Lu, expected: [%Lu..%Lu]\n", i, matchname, startoffset, off, off + maxshift);
continue;
}
} else if(startoffset != (unsigned long long) off) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Virus offset: %Lu, expected: %Lu\n", i, matchname, startoffset, off);
continue;
}
}
hret = (*sn_sigscan_resultget_extradata_f)(resulthandle, i, &optionalsigdata);
if(hret) {
cli_errmsg("cli_ncore_scandesc: sn_sigscan_resultget_extradata failed for result %d, signature %s: %d\n", i, matchname, hret);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_ENCIO;
}
if(optionalsigdata && strlen(optionalsigdata)) {
pt = cli_strtok(optionalsigdata, 1, ":");
if(pt) {
if(!isdigit(*pt)) {
free(pt);
cli_errmsg("cli_ncore_scandesc: HW Result[%u]: %s: Incorrect optional signature data: %s\n", i, matchname, optionalsigdata);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_EMALFDB;
}
if((unsigned int) atoi(pt) < cl_retflevel()) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Signature max flevel: %d, current: %d\n", i, matchname, atoi(pt), cl_retflevel());
free(pt);
continue;
}
free(pt);
pt = cli_strtok(optionalsigdata, 0, ":");
if(pt) {
if(!isdigit(*pt)) {
free(pt);
cli_errmsg("cli_ncore_scandesc: HW Result[%u]: %s: Incorrect optional signature data: %s\n", i, matchname, optionalsigdata);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_EMALFDB;
}
if((unsigned int) atoi(pt) > cl_retflevel()) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Signature required flevel: %d, current: %d\n", i, matchname, atoi(pt), cl_retflevel());
free(pt);
continue;
}
free(pt);
}
} else {
if(!isdigit(*optionalsigdata)) {
cli_errmsg("cli_ncore_scandesc: HW Result[%u]: %s: Incorrect optional signature data: %s\n", i, matchname, optionalsigdata);
(*sn_sigscan_resultfree_f)(resulthandle);
if(info.exeinfo.section)
free(info.exeinfo.section);
return CL_EMALFDB;
}
if((unsigned int) atoi(optionalsigdata) > cl_retflevel()) {
cli_dbgmsg("cli_ncore_scandesc: HW Result[%u]: %s: Signature required flevel: %d, current: %d\n", i, matchname, atoi(optionalsigdata), cl_retflevel());
continue;
}
}
}
*ctx->virname = matchname;
ret = CL_VIRUS;
break;
}
if(info.exeinfo.section)
free(info.exeinfo.section);
hret = (*sn_sigscan_resultfree_f)(resulthandle);
if(hret) {
cli_errmsg("cli_ncore_scandesc: can't free results: %d\n", ret);
return CL_ENCIO;
}
if(ctx->engine->md5_hlist) {
unsigned char digest[16];
struct cli_md5_node *md5_node;
MD5_Final(digest, md5ctx);
md5_node = cli_vermd5(digest, ctx->engine);
if(md5_node) {
struct stat sb;
if(fstat(desc, &sb) == -1)
return CL_EIO;
if((unsigned int) sb.st_size != md5_node->size) {
cli_warnmsg("Detected false positive MD5 match. Please report.\n");
} else {
if(md5_node->fp) {
cli_dbgmsg("Eliminated false positive match (fp sig: %s)\n", md5_node->virname);
ret = CL_CLEAN;
} else {
if(ctx->virname)
*ctx->virname = md5_node->virname;
ret = CL_VIRUS;
}
}
}
}
if(ret == CL_VIRUS || (ftype != CL_TYPE_UNKNOWN_TEXT && ftype != CL_TYPE_UNKNOWN_DATA))
return ret;
if(lseek(desc, origoff, SEEK_SET) == -1) {
cli_errmsg("cli_ncore_scandesc: lseek() failed for descriptor %d\n", desc);
return CL_EIO;
}
*cont = 1;
return ret;
}
int cli_ncore_load(const char *filename, struct cl_engine **engine, unsigned int *signo, unsigned int options)
{
int ret = 0;
unsigned int newsigs = 0;
if((ret = cli_initengine(engine, options))) {
cl_free(*engine);
return ret;
}
if((ret = cli_ncore_dlinit())) {
cl_free(*engine);
return ret;
}
ret = (*sn_sigscan_initdb_f)(&(*engine)->ncdb);
if(ret) {
cli_errmsg("cli_ncore_load: error initializing the matcher: %d\n", ret);
cl_free(*engine);
return CL_ENCINIT;
}
(*engine)->ncore = 1;
ret = (*sn_sigscan_loaddb_f)((*engine)->ncdb, filename, 0, &newsigs);
if(ret) {
cli_errmsg("cli_ncore_load: can't load hardware database: %d\n", ret);
cl_free(*engine);
return CL_ENCLOAD;
}
*signo += newsigs;
return CL_SUCCESS;
}
void cli_ncore_unload(struct cl_engine *engine)
{
int ret;
ret = (*sn_sigscan_closedb_f)(engine->ncdb);
if(ret)
cli_errmsg("cl_free: can't close hardware database: %d\n", ret);
}
#endif