lib/colon/passwd/slurp.cc

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//
// nis-util - NIS Administration Utilities
// Copyright (C) 2001, 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 <lib/config.h>
#include <libexplain/output.h>

#include <lib/colon/passwd/functor.h>
#include <lib/colon/passwd/slurp.h>
#include <lib/symtab.h>


colon_passwd_slurp::~colon_passwd_slurp()
{
}


colon_passwd_slurp::colon_passwd_slurp(const rcstring &a_filename) :
    colon_passwd(a_filename)
{
}


colon_passwd_slurp::pointer
colon_passwd_slurp::create(const rcstring &a_filename)
{
    return pointer(new colon_passwd_slurp(a_filename));
}


bool
colon_passwd_slurp::process(const record::pointer &rp)
{
    assert(rp);

    {
        rcstring lc_name = rp->get_name().downcase();
        by_name_t::iterator it = by_name.find(lc_name);
        if (it != by_name.end())
        {
            error
            (
                rp->get_source_location(),
                "duplicate %s user name...",
                rp->get_name().quote_c().c_str()
            );
            error
            (
                it->second->get_source_location(),
                "... here is the first %s user name",
                it->second->get_name().quote_c().c_str()
            );
            // don't cascade duplicate errors, e.g. uid, home dir
            return false;
        }
        by_name.insert(by_name_t::value_type(lc_name, rp));
    }

    {
        by_uid_t::iterator it = by_uid.find(rp->get_uid());
        if (it != by_uid.end())
        {
            error
            (
                rp->get_source_location(),
                "user %s: duplicate %s user id...",
                rp->get_name().quote_c().c_str(),
                rp->get_uid().quote_c().c_str()
            );
            error
            (
                it->second->get_source_location(),
                "... here is the first %s user id (user %s)",
                it->second->get_uid().quote_c().c_str(),
                it->second->get_name().quote_c().c_str()
            );
            // don't cascade duplicate errors, e.g. home dir
            return false;
        }
        by_uid.insert(by_uid_t::value_type(rp->get_uid(), rp));
    }

    {
        by_home_t::iterator it = by_home.find(rp->get_home());
        if (it != by_home.end())
        {
            error
            (
                rp->get_source_location(),
                "user %s: duplicate %s home directory...",
                rp->get_name().quote_c().c_str(),
                rp->get_home().quote_c().c_str()
            );
            error
            (
                it->second->get_source_location(),
                "... here is the first %s home directory (user %s)",
                it->second->get_home().quote_c().c_str(),
                it->second->get_name().quote_c().c_str()
            );
            // don't cascade duplicate errors
            return false;
        }
        by_home.insert(by_home_t::value_type(rp->get_home(), rp));
    }

    // derived classes can keep processing
    return true;
}


void
colon_passwd_slurp::read_and_process(void)
{
    for (;;)
    {
        record::pointer rp = get();
        if (!rp)
            break;
        process(rp);
    }
    // do not close() here, let the derived class, or the destructor, do it.
}


colon_passwd::record::pointer
colon_passwd_slurp::query_by_name(const rcstring &name)
    const
{
    by_name_t::const_iterator it = by_name.find(name.downcase());
    if (it == by_name.end())
        return record::pointer();
    return it->second;
}


colon_passwd::record::pointer
colon_passwd_slurp::query_by_uid(const rcstring &uid)
    const
{
    by_uid_t::const_iterator it = by_uid.find(uid);
    if (it == by_uid.end())
        return record::pointer();
    return it->second;
}


colon_passwd::record::pointer
colon_passwd_slurp::query_by_uid(long uid)
    const
{
    return query_by_uid(rcstring::format("%ld", uid));
}


void
colon_passwd_slurp::walk(colon_passwd_functor &func)
    const
{
    for
    (
        by_name_t::const_iterator it = by_name.begin();
        it != by_name.end();
        ++it
    )
    {
        record::pointer rp = it->second;
        assert(rp);
        func(rp);
    }
}


// vim: set ts=8 sw=4 et :