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/*
* Compilation: gcc -Wall ex1.c -o ex1 -lclamav
*
* Copyright (C) 2002 - 2006 Tomasz Kojm <tkojm@clamav.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <clamav.h>
/*
* Exit codes:
* 0: clean
* 1: infected
* 2: error
*/
int main(int argc, char **argv)
{
int fd, ret;
unsigned long int size = 0;
unsigned int sigs = 0;
long double mb;
const char *virname;
struct cl_engine *engine = NULL;
struct cl_limits limits;
if(argc != 2) {
printf("Usage: %s file\n", argv[0]);
exit(2);
}
if((fd = open(argv[1], O_RDONLY)) == -1) {
printf("Can't open file %s\n", argv[1]);
exit(2);
}
/* load all available databases from default directory */
if((ret = cl_load(cl_retdbdir(), &engine, &sigs, CL_DB_STDOPT))) {
printf("cl_load: %s\n", cl_strerror(ret));
close(fd);
exit(2);
}
printf("Loaded %d signatures.\n", sigs);
/* build engine */
if((ret = cl_build(engine))) {
printf("Database initialization error: %s\n", cl_strerror(ret));;
cl_free(engine);
close(fd);
exit(2);
}
/* set up archive limits */
memset(&limits, 0, sizeof(struct cl_limits));
limits.maxfiles = 1000; /* max files */
limits.maxfilesize = 10 * 1048576; /* maximum size of archived/compressed
* file (files exceeding this limit
* will be ignored)
*/
limits.maxreclevel = 5; /* maximum recursion level for archives */
limits.maxmailrec = 64; /* maximum recursion level for mail files */
limits.maxratio = 200; /* maximum compression ratio */
/* scan file descriptor */
if((ret = cl_scandesc(fd, &virname, &size, engine, &limits, CL_SCAN_STDOPT)) == CL_VIRUS) {
printf("Virus detected: %s\n", virname);
} else {
if(ret == CL_CLEAN) {
printf("No virus detected.\n");
} else {
printf("Error: %s\n", cl_strerror(ret));
cl_free(engine);
close(fd);
exit(2);
}
}
close(fd);
/* calculate size of scanned data */
mb = size * (CL_COUNT_PRECISION / 1024) / 1024.0;
printf("Data scanned: %2.2Lf MB\n", mb);
/* free memory */
cl_free(engine);
exit(ret == CL_VIRUS ? 1 : 0);
}
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