RcdScript.cpp

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/* 
 * Confdump-Agent - Dump static and runtime system configuration
 * Copyright (C) 2009-2012  Straton IT, SAS
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 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, see <http://www.gnu.org/licenses/>.
 */

extern "C"
{
#include <unistd.h>
}

#include "QDir"
#include "boost/system/system_error.hpp"
#include "boost/foreach.hpp"
#include "Confdump/System/LinuxDumper.hpp"
#include "Confdump/System/Linux/RcdScript.hpp"

using boost::shared_ptr;

namespace Confdump
{

namespace System
{

namespace Linux
{

/* FIXME: use SystemContext
 *
 * FIXME: use boost::fs and a custom status to get full stat(2) information, error checking, etc
 *
 * FIXME: integrate this in some directory listing table
 */


RcdScript::RcdScript( QString fullPath )
{
    QFileInfo info( fullPath );
    fullPath_ = info.absoluteFilePath();
    if ( !info.exists() )
        throw RuntimeError( QObject::tr( "RcdScript: %1 does not exist" ).arg( fullPath ) );

    QRegExp classicPath( "/etc/rc(\\w)\\.d/([SK])(\\d{2})(.*)" );
    if ( classicPath.exactMatch( fullPath_ ) )
    {
        runLevel_ = classicPath.cap( 1 ).at( 0 );
        startStop_ = classicPath.cap( 2 ).at( 0 );
        priority_ = classicPath.cap( 3 ).toUInt();
        name_ = classicPath.cap( 4 );
    }

    if ( info.isSymLink() )
    {
        char linksToRaw[1024];
        ssize_t linksToSize = readlink( fullPath.toLocal8Bit().data(), linksToRaw, sizeof( linksToRaw ) );
        if ( linksToSize < 0 )
            throw boost::system::system_error( errno, boost::system::system_category, "readlink " + fullPath.toLocal8Bit() );
        linksTo_ = QString::fromLocal8Bit( linksToRaw, linksToSize );
    }
}

RcdScript::~RcdScript()
{
}

QString RcdScript::fullPath() const
{
    return fullPath_;
}

QString RcdScript::linksTo() const
{
    return linksTo_;
}

QString RcdScript::name() const
{
    return name_;
}

Result RcdScript::allRcdScripts( boost::shared_ptr<LinuxDumper> driver )
{
    QDir etc( "/etc", "rc?.d", QDir::Name, QDir::Dirs | QDir::System );
    QStringList rcDirs = etc.entryList();

    Result result;
    BOOST_FOREACH ( QString rcDirPath, rcDirs )
    {
        QDir rcDir( "/etc/" + rcDirPath, "", QDir::Name, QDir::Files | QDir::Executable | QDir::System );
        QStringList rcScriptsNames = rcDir.entryList();

        BOOST_FOREACH( QString name, rcScriptsNames )
        {
            result.push_back( shared_ptr<RcdScript>( new RcdScript( "/etc/" + rcDirPath + "/" + name ) ) );
        }
    }

    return result;
}

} // ns Linux
} // ns System
} // ns Confdump