Major ACL handling update, including the following changes:

[thirdparty/squid.git] / src / acl / SourceDomain.cc

/*
 * DEBUG: section 28    Access Control
 * AUTHOR: Duane Wessels
 *
 * SQUID Web Proxy Cache          http://www.squid-cache.org/
 * ----------------------------------------------------------
 *
 *  Squid is the result of efforts by numerous individuals from
 *  the Internet community; see the CONTRIBUTORS file for full
 *  details.   Many organizations have provided support for Squid's
 *  development; see the SPONSORS file for full details.  Squid is
 *  Copyrighted (C) 2001 by the Regents of the University of
 *  California; see the COPYRIGHT file for full details.  Squid
 *  incorporates software developed and/or copyrighted by other
 *  sources; see the CREDITS file for full details.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 *
 * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
 */

#include "squid.h"
#include "acl/SourceDomain.h"
#include "acl/Checklist.h"
#include "acl/RegexData.h"
#include "acl/DomainData.h"
#include "fqdncache.h"
#include "HttpRequest.h"

SourceDomainLookup SourceDomainLookup::instance_;

SourceDomainLookup *
SourceDomainLookup::Instance()
{
    return &instance_;
}

void
SourceDomainLookup::checkForAsync(ACLChecklist *checklist) const
{
    fqdncache_nbgethostbyaddr(Filled(checklist)->src_addr, LookupDone, checklist);
}

void
SourceDomainLookup::LookupDone(const char *fqdn, const DnsLookupDetails &details, void *data)
{
    ACLFilledChecklist *checklist = Filled((ACLChecklist*)data);
    checklist->markSourceDomainChecked();
    checklist->request->recordLookup(details);
    checklist->resumeNonBlockingCheck(SourceDomainLookup::Instance());
}

int
ACLSourceDomainStrategy::match (ACLData<MatchType> * &data, ACLFilledChecklist *checklist, ACLFlags &)
{
    const char *fqdn = NULL;
    fqdn = fqdncache_gethostbyaddr(checklist->src_addr, FQDN_LOOKUP_IF_MISS);

    if (fqdn) {
        return data->match(fqdn);
    } else if (!checklist->sourceDomainChecked()) {
        /* FIXME: Using AclMatchedName here is not OO correct. Should find a way to the current acl */
        debugs(28, 3, "aclMatchAcl: Can't yet compare '" << AclMatchedName << "' ACL for '" << checklist->src_addr << "'");
        if (checklist->goAsync(SourceDomainLookup::Instance()))
            return -1;
        // else fall through to "none" match, hiding the lookup failure (XXX)
    }

    return data->match("none");
}

ACLSourceDomainStrategy *
ACLSourceDomainStrategy::Instance()
{
    return &Instance_;
}

ACLSourceDomainStrategy ACLSourceDomainStrategy::Instance_;