denyhosts/clamav/common/hostid.c

/*
 *  Copyright (C) 2014-2022 Cisco and/or its affiliates. All rights reserved.
 *
 *  Author: Shawn Webb
 *
 *  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.
 */

#include <string.h>

// libclamav
#include "others.h"

#include "output.h"

char hostid[37];

int is_valid_hostid(void)
{
    int count, i;

    if (strlen(hostid) != 36)
        return 0;

    count = 0;
    for (i = 0; i < 36; i++)
        if (hostid[i] == '-')
            count++;

    if (count != 4)
        return 0;

    if (hostid[8] != '-' || hostid[13] != '-' || hostid[18] != '-' || hostid[23] != '-')
        return 0;

    return 1;
}

char *get_hostid(void *cbdata)
{
    UNUSEDPARAM(cbdata);

    if (!strcmp(hostid, "none"))
        return NULL;

    if (!is_valid_hostid())
        return strdup(STATS_ANON_UUID);

    logg(LOGG_INFO, "HostID is valid: %s\n", hostid);

    return strdup(hostid);
}