nis-util-networks/space/networks/slurp/check.cc

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//
// nis-util - NIS Administration Utilities
// Copyright (C) 2002, 2008, 2009, 2011, 2012 Peter Miller
//
// 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, see <http://www.gnu.org/licenses/>.
//

#include <arpa/inet.h>
#include <netinet/in.h>

#include <lib/net_utils.h>
#include <lib/space/netmasks/slurp.h>

#include <nis-util-networks/space/networks/slurp/check.h>


space_networks_slurp_check::~space_networks_slurp_check()
{
}


space_networks_slurp_check::space_networks_slurp_check(
    const rcstring &a_filename,
    const space_netmasks_slurp::pointer &a_netmasks
) :
    space_networks_slurp(a_filename),
    netmasks(a_netmasks)
{
}


#define LSB(x) ((x) & -(x))


void
space_networks_slurp_check::process(const record::pointer &rp)
{
    //
    // Do all the usual processing.
    //
    space_networks_slurp::process(rp);

    //
    // Make sure each network has a corresponding netmask.
    //
    if (!netmasks->query_by_address(rp->get_number()))
    {
        unsigned long nnum = rp->get_number_binary();
        unsigned long mask_by_class = network_mask_from_number(nnum);
        if (nnum & ~mask_by_class)
        {
            //
            // Some networks absolutely require a netmask entry, because
            // the default mask will not suffice.
            //
            unsigned long suggest = 0xFFFFFFFFuL ^ (LSB(nnum) - 1);
            rcstring suggest_str = string_from_network_number(suggest);
            error
            (
                rp->get_source_location(),
                "netmask for %s not present in netmasks map, "
                    "suggest %s %s be inserted",
                rp->get_number().quote_c().c_str(),
                suggest_str.quote_c().c_str(),
                (suggest < 0xFFFFFFFCuL ? "or wider" : "")
            );
        }
        else
        {
            rcstring suggest_str = string_from_network_number(mask_by_class);
            error
            (
                rp->get_source_location(),
                "netmask for %s not present in netmasks map, "
                    "suggest %s be inserted",
                rp->get_number().quote_c().c_str(),
                suggest_str.quote_c().c_str()
            );
        }
    }
}


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