2001-11-25 12:22:54 +00:00
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/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: Scan for virusses
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*
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*****************************************************************************
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2004-02-21 17:22:00 +00:00
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* Copyright (C) 1997-2004
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2001-11-25 12:22:54 +00:00
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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2003-08-15 20:05:34 +00:00
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* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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2001-11-25 12:22:54 +00:00
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*****************************************************************************/
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2002-06-30 12:48:44 +00:00
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#include "../config.h"
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2004-02-21 17:22:00 +00:00
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#include "../lib/mbselib.h"
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2001-11-25 12:22:54 +00:00
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#include "virscan.h"
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2004-04-11 19:38:51 +00:00
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extern pid_t mypid;
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2002-06-01 12:27:11 +00:00
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/*
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* Check for known viri, optional in a defined path.
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*/
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int VirScan(char *path)
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2001-11-25 12:22:54 +00:00
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{
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2004-04-11 19:38:51 +00:00
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char *pwd, *temp, *cmd = NULL, *stdlog, *errlog, buf[256];
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FILE *fp, *lp;
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int vrc, rc = FALSE, has_scan = FALSE;
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2001-11-25 12:22:54 +00:00
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temp = calloc(PATH_MAX, sizeof(char));
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2004-04-11 19:38:51 +00:00
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stdlog = calloc(PATH_MAX, sizeof(char));
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errlog = calloc(PATH_MAX, sizeof(char));
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2001-11-25 12:22:54 +00:00
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sprintf(temp, "%s/etc/virscan.data", getenv("MBSE_ROOT"));
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2004-04-11 19:38:51 +00:00
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sprintf(stdlog, "%s/tmp/stdlog%d", getenv("MBSE_ROOT"), mypid);
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sprintf(errlog, "%s/tmp/errlog%d", getenv("MBSE_ROOT"), mypid);
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2001-11-25 12:22:54 +00:00
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if ((fp = fopen(temp, "r")) == NULL) {
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WriteError("No virus scanners defined");
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2002-06-01 12:27:11 +00:00
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free(temp);
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return FALSE;
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}
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fread(&virscanhdr, sizeof(virscanhdr), 1, fp);
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2001-11-25 12:22:54 +00:00
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2002-06-01 12:27:11 +00:00
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while (fread(&virscan, virscanhdr.recsize, 1, fp) == 1) {
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if (virscan.available)
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has_scan = TRUE;
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}
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if (!has_scan) {
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Syslog('+', "No active virus scanners, skipping scan");
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fclose(fp);
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free(temp);
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return FALSE;
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}
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pwd = calloc(PATH_MAX, sizeof(char));
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getcwd(pwd, PATH_MAX);
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if (path) {
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chdir(path);
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Syslog('+', "Start virusscan in %s", path);
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} else {
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Syslog('+', "Start virusscan in %s", pwd);
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}
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fseek(fp, virscanhdr.hdrsize, SEEK_SET);
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while (fread(&virscan, virscanhdr.recsize, 1, fp) == 1) {
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cmd = NULL;
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if (virscan.available) {
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Altime(3600);
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cmd = xstrcpy(virscan.scanner);
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cmd = xstrcat(cmd, (char *)" ");
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cmd = xstrcat(cmd, virscan.options);
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2004-04-11 19:38:51 +00:00
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vrc = execute_str(cmd, (char *)"*", (char *)NULL, (char *)"/dev/null", stdlog, errlog);
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if (file_size(stdlog)) {
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Syslog('-', "%s contains data", stdlog);
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if ((lp = fopen(stdlog, "r"))) {
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while (fgets(buf, sizeof(buf) -1, lp)) {
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Striplf(buf);
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Syslog('-', "stdout: \"%s\"", printable(buf, 0));
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}
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fclose(lp);
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}
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}
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if (file_size(errlog)) {
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Syslog('-', "%s contains data", errlog);
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if ((lp = fopen(errlog, "r"))) {
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while (fgets(buf, sizeof(buf) -1, lp)) {
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Striplf(buf);
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Syslog('-', "stderr: \"%s\"", printable(buf, 0));
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}
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fclose(lp);
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}
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}
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unlink(stdlog);
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unlink(errlog);
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if (vrc != virscan.error) {
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2002-06-01 12:27:11 +00:00
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Syslog('!', "Virus found by %s", virscan.comment);
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rc = TRUE;
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2001-11-25 12:22:54 +00:00
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}
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2002-06-01 12:27:11 +00:00
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free(cmd);
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Altime(0);
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Nopper();
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2001-11-25 12:22:54 +00:00
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}
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}
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2002-06-01 12:27:11 +00:00
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fclose(fp);
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if (path)
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chdir(pwd);
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2001-11-25 12:22:54 +00:00
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2002-06-01 12:27:11 +00:00
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free(pwd);
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2002-05-12 12:47:18 +00:00
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free(temp);
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2004-04-11 19:38:51 +00:00
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free(stdlog);
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free(errlog);
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2001-11-25 12:22:54 +00:00
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return rc;
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}
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