RpmDb.cc

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/*---------------------------------------------------------------------\
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|                         |__  / \ / / . \ . \                         |
|                           / / \ V /|  _/  _/                         |
|                          / /__ | | | | | |                           |
|                         /_____||_| |_| |_|                           |
|                                                                      |
\---------------------------------------------------------------------*/
#include "librpm.h"

#include <cstdlib>
#include <cstdio>
#include <ctime>

#include <iostream>
#include <fstream>
#include <list>
#include <map>
#include <set>
#include <string>
#include <vector>
#include <algorithm>

#include "zypp/base/Logger.h"
#include "zypp/base/String.h"

#include "zypp/Date.h"
#include "zypp/Pathname.h"
#include "zypp/PathInfo.h"
#include "zypp/PublicKey.h"

#include "zypp/target/rpm/RpmDb.h"
#include "zypp/target/rpm/RpmCallbacks.h"

#include "zypp/target/CommitLog.h"
#include "zypp/target/rpm/librpmDb.h"
#include "zypp/target/rpm/RpmPackageImpl.h"
#include "zypp/target/rpm/RpmException.h"
#include "zypp/CapSet.h"
#include "zypp/CapFactory.h"
#include "zypp/KeyRing.h"
#include "zypp/ZYppFactory.h"
#include "zypp/TmpPath.h"

#ifndef _
#define _(X) X
#endif

using namespace std;
using namespace zypp::filesystem;

namespace zypp
{
  namespace target
  {
    namespace rpm
    {

      struct KeyRingSignalReceiver : callback::ReceiveReport<KeyRingSignals>
      {
        KeyRingSignalReceiver(RpmDb &rpmdb) : _rpmdb(rpmdb)
        {
          connect();
        }

        ~KeyRingSignalReceiver()
        {
          disconnect();
        }

        virtual void trustedKeyAdded( const KeyRing &keyring, const PublicKey &key )
        {
          MIL << "trusted key added to zypp Keyring. Syncronizing keys with rpm keyring" << std::endl;
          _rpmdb.importZyppKeyRingTrustedKeys();
          _rpmdb.exportTrustedKeysInZyppKeyRing();
        }

        virtual void trustedKeyRemoved( const KeyRing &keyring, const PublicKey &key  )
        {
        }

        RpmDb &_rpmdb;
      };

      static shared_ptr<KeyRingSignalReceiver> sKeyRingReceiver;

      unsigned diffFiles(const std::string file1, const std::string file2, std::string& out, int maxlines)
      {
        const char* argv[] =
        {
          "diff",
          "-u",
          file1.c_str(),
          file2.c_str(),
          NULL
        };
        ExternalProgram prog(argv,ExternalProgram::Discard_Stderr, false, -1, true);

        //if(!prog)
        //return 2;

        string line;
        int count = 0;
        for (line = prog.receiveLine(), count=0;
              !line.empty();
              line = prog.receiveLine(), count++ )
          {
            if (maxlines<0?true:count<maxlines)
              out+=line;
          }

        return prog.close();
      }



      /******************************************************************
       **
       **
       **       FUNCTION NAME : stringPath
       **       FUNCTION TYPE : inline string
      */
      inline string stringPath( const Pathname & root_r, const Pathname & sub_r )
      {
        return librpmDb::stringPath( root_r, sub_r );
      }

      /******************************************************************
       **
       **
       **       FUNCTION NAME : operator<<
       **       FUNCTION TYPE : ostream &
      */
      ostream & operator<<( ostream & str, const RpmDb::DbStateInfoBits & obj )
      {
        if ( obj == RpmDb::DbSI_NO_INIT )
          {
            str << "NO_INIT";
          }
        else
          {
#define ENUM_OUT(B,C) str << ( obj & RpmDb::B ? C : '-' )
            str << "V4(";
            ENUM_OUT( DbSI_HAVE_V4,     'X' );
            ENUM_OUT( DbSI_MADE_V4,     'c' );
            ENUM_OUT( DbSI_MODIFIED_V4, 'm' );
            str << ")V3(";
            ENUM_OUT( DbSI_HAVE_V3,     'X' );
            ENUM_OUT( DbSI_HAVE_V3TOV4, 'B' );
            ENUM_OUT( DbSI_MADE_V3TOV4, 'c' );
            str << ")";
#undef ENUM_OUT
          }
        return str;
      }

      //        CLASS NAME : RpmDbPtr
      //        CLASS NAME : RpmDbconstPtr

#define WARNINGMAILPATH "/var/log/YaST2/"
#define FILEFORBACKUPFILES "YaSTBackupModifiedFiles"

      //
      //        CLASS NAME : RpmDb::Packages
      class RpmDb::Packages
      {
      public:
        list<Package::Ptr>        _list;
        map<std::string,Package::Ptr> _index;
        bool                      _valid;
        Packages() : _valid( false )
        {}
        void clear()
        {
          _list.clear();
          _index.clear();
          _valid = false;
        }
        Package::Ptr lookup( const string & name_r ) const
        {
          map<string,Package::Ptr>::const_iterator got = _index.find( name_r );
          if ( got != _index.end() )
            return got->second;
          return Package::Ptr();
        }
        void buildIndex()
        {
          _index.clear();
          for ( list<Package::Ptr>::iterator iter = _list.begin();
                iter != _list.end(); ++iter )
            {
              string name = (*iter)->name();
              Package::Ptr & nptr = _index[name]; // be shure to get a reference!

              if ( nptr )
                {
                  WAR << "Multiple entries for package '" << name << "' in rpmdb" << endl;
                  if ( nptr->installtime() > (*iter)->installtime() )
                    continue;
                  else
                    nptr = *iter;
                }
              else
                {
                  nptr = *iter;
                }
            }
          _valid = true;
        }
      };


      //
      //        CLASS NAME : RpmDb
      //

#define FAILIFNOTINITIALIZED if( ! initialized() ) { ZYPP_THROW(RpmDbNotOpenException()); }


      //
      //
      //        METHOD NAME : RpmDb::RpmDb
      //        METHOD TYPE : Constructor
      //
      RpmDb::RpmDb()
      : _dbStateInfo( DbSI_NO_INIT )
      , _packages( * new Packages ) // delete in destructor
#warning Check for obsolete memebers
      , _backuppath ("/var/adm/backup")
      , _packagebackups(false)
      , _warndirexists(false)
      {
        process = 0;
        exit_code = -1;

        // Some rpm versions are patched not to abort installation if
        // symlink creation failed.
        setenv( "RPM_IgnoreFailedSymlinks", "1", 1 );
        sKeyRingReceiver.reset(new KeyRingSignalReceiver(*this));
      }

      //
      //
      //        METHOD NAME : RpmDb::~RpmDb
      //        METHOD TYPE : Destructor
      //
      RpmDb::~RpmDb()
      {
        MIL << "~RpmDb()" << endl;
        closeDatabase();

        delete process;
        delete &_packages;
        MIL  << "~RpmDb() end" << endl;
        sKeyRingReceiver.reset();
      }

      Date RpmDb::timestamp() const
      {
        Date ts_rpm;

        Pathname db_path;
        if ( dbPath().empty() )
          db_path = "/var/lib/rpm";
        else
          db_path = dbPath();

        PathInfo rpmdb_info(root() + db_path + "/Packages");

        if ( rpmdb_info.isExist() )
          return rpmdb_info.mtime();
        else
          return Date::now();
      }
      //
      //
      //        METHOD NAME : RpmDb::dumpOn
      //        METHOD TYPE : std::ostream &
      //
      std::ostream & RpmDb::dumpOn( std::ostream & str ) const
      {
        str << "RpmDb[";

        if ( _dbStateInfo == DbSI_NO_INIT )
          {
            str << "NO_INIT";
          }
        else
          {
#define ENUM_OUT(B,C) str << ( _dbStateInfo & B ? C : '-' )
            str << "V4(";
            ENUM_OUT( DbSI_HAVE_V4,     'X' );
            ENUM_OUT( DbSI_MADE_V4,     'c' );
            ENUM_OUT( DbSI_MODIFIED_V4, 'm' );
            str << ")V3(";
            ENUM_OUT( DbSI_HAVE_V3,     'X' );
            ENUM_OUT( DbSI_HAVE_V3TOV4, 'B' );
            ENUM_OUT( DbSI_MADE_V3TOV4, 'c' );
            str << "): " << stringPath( _root, _dbPath );
#undef ENUM_OUT
          }
        return str << "]";
      }

      //
      //
      //        METHOD NAME : RpmDb::initDatabase
      //        METHOD TYPE : PMError
      //
      void RpmDb::initDatabase( Pathname root_r, Pathname dbPath_r )
      {
        // Check arguments
        if ( root_r.empty() )
          root_r = "/";

        if ( dbPath_r.empty() )
          dbPath_r = "/var/lib/rpm";

        if ( ! (root_r.absolute() && dbPath_r.absolute()) )
          {
            ERR << "Illegal root or dbPath: " << stringPath( root_r, dbPath_r ) << endl;
            ZYPP_THROW(RpmInvalidRootException(root_r, dbPath_r));
          }

        MIL << "Calling initDatabase: " << stringPath( root_r, dbPath_r ) << endl;

        // Check whether already initialized
        if ( initialized() )
          {
            if ( root_r == _root && dbPath_r == _dbPath )
              {
                return;
              }
            else
              {
                ZYPP_THROW(RpmDbAlreadyOpenException(_root, _dbPath, root_r, dbPath_r));
              }
          }

        // init database
        librpmDb::unblockAccess();
        DbStateInfoBits info = DbSI_NO_INIT;
        try
          {
            internal_initDatabase( root_r, dbPath_r, info );
          }
        catch (const RpmException & excpt_r)
          {
            ZYPP_CAUGHT(excpt_r);
            librpmDb::blockAccess();
            ERR << "Cleanup on error: state " << info << endl;

            if ( dbsi_has( info, DbSI_MADE_V4 ) )
              {
                // remove the newly created rpm4 database and
                // any backup created on conversion.
                removeV4( root_r + dbPath_r, dbsi_has( info, DbSI_MADE_V3TOV4 ) );
              }
            ZYPP_RETHROW(excpt_r);
          }
        if ( dbsi_has( info, DbSI_HAVE_V3 ) )
          {
            if ( root_r == "/" || dbsi_has( info, DbSI_MODIFIED_V4 ) )
              {
                // Move obsolete rpm3 database beside.
                MIL << "Cleanup: state " << info << endl;
                removeV3( root_r + dbPath_r, dbsi_has( info, DbSI_MADE_V3TOV4 ) );
                dbsi_clr( info, DbSI_HAVE_V3 );
              }
            else
              {
                // Performing an update: Keep the original rpm3 database
                // and wait if the rpm4 database gets modified by installing
                // or removing packages. Cleanup in modifyDatabase or closeDatabase.
                MIL << "Update mode: Cleanup delayed until closeOldDatabase." << endl;
              }
          }
#warning CHECK: notify root about conversion backup.

        _root   = root_r;
        _dbPath = dbPath_r;
        _dbStateInfo = info;

#warning Add rebuild database once have the info about context
#if 0
        if ( ! ( Y2PM::runningFromSystem() ) )
          {
            if (      dbsi_has( info, DbSI_HAVE_V4 )
                 && ! dbsi_has( info, DbSI_MADE_V4 ) )
              {
                err = rebuildDatabase();
              }
          }
#endif

        MIL << "Syncronizing keys with zypp keyring" << std::endl;
        importZyppKeyRingTrustedKeys();
        exportTrustedKeysInZyppKeyRing();

        // Close the database in case any write acces (create/convert)
        // happened during init. This should drop any lock acquired
        // by librpm. On demand it will be reopened readonly and should
        // not hold any lock.
        librpmDb::dbRelease( true );

        MIL << "InitDatabase: " << *this << endl;
      }

      //
      //
      //        METHOD NAME : RpmDb::internal_initDatabase
      //        METHOD TYPE : PMError
      //
      void RpmDb::internal_initDatabase( const Pathname & root_r, const Pathname & dbPath_r,
                                         DbStateInfoBits & info_r )
      {
        info_r = DbSI_NO_INIT;

        // Get info about the desired database dir
        librpmDb::DbDirInfo dbInfo( root_r, dbPath_r );

        if ( dbInfo.illegalArgs() )
          {
            // should not happen (checked in initDatabase)
            ZYPP_THROW(RpmInvalidRootException(root_r, dbPath_r));
          }
        if ( ! dbInfo.usableArgs() )
          {
            ERR << "Bad database directory: " << dbInfo.dbDir() << endl;
            ZYPP_THROW(RpmInvalidRootException(root_r, dbPath_r));
          }

        if ( dbInfo.hasDbV4() )
          {
            dbsi_set( info_r, DbSI_HAVE_V4 );
            MIL << "Found rpm4 database in " << dbInfo.dbDir() << endl;
          }
        else
          {
            MIL << "Creating new rpm4 database in " << dbInfo.dbDir() << endl;
          }

        if ( dbInfo.hasDbV3() )
          {
            dbsi_set( info_r, DbSI_HAVE_V3 );
          }
        if ( dbInfo.hasDbV3ToV4() )
          {
            dbsi_set( info_r, DbSI_HAVE_V3TOV4 );
          }

        DBG << "Initial state: " << info_r << ": " << stringPath( root_r, dbPath_r );
        librpmDb::dumpState( DBG ) << endl;

        // Access database, create if needed

        // creates dbdir and empty rpm4 database if not present
        librpmDb::dbAccess( root_r, dbPath_r );

        if ( ! dbInfo.hasDbV4() )
          {
            dbInfo.restat();
            if ( dbInfo.hasDbV4() )
              {
                dbsi_set( info_r, DbSI_HAVE_V4 | DbSI_MADE_V4 );
              }
          }

        DBG << "Access state: " << info_r << ": " << stringPath( root_r, dbPath_r );
        librpmDb::dumpState( DBG ) << endl;

        // Check whether to convert something. Create backup but do
        // not remove anything here
        librpmDb::constPtr dbptr;
        librpmDb::dbAccess( dbptr );
        bool dbEmpty = dbptr->empty();
        if ( dbEmpty )
          {
            MIL << "Empty rpm4 database "  << dbInfo.dbV4() << endl;
          }

        if ( dbInfo.hasDbV3() )
          {
            MIL << "Found rpm3 database " << dbInfo.dbV3() << endl;

            if ( dbEmpty )
              {
                extern void convertV3toV4( const Pathname & v3db_r, const librpmDb::constPtr & v4db_r );
                convertV3toV4( dbInfo.dbV3().path(), dbptr );

                // create a backup copy
                int res = filesystem::copy( dbInfo.dbV3().path(), dbInfo.dbV3ToV4().path() );
                if ( res )
                  {
                    WAR << "Backup converted rpm3 database failed: error(" << res << ")" << endl;
                  }
                else
                  {
                    dbInfo.restat();
                    if ( dbInfo.hasDbV3ToV4() )
                      {
                        MIL << "Backup converted rpm3 database: " << dbInfo.dbV3ToV4() << endl;
                        dbsi_set( info_r, DbSI_HAVE_V3TOV4 | DbSI_MADE_V3TOV4 );
                      }
                  }

              }
            else
              {

                WAR << "Non empty rpm3 and rpm4 database found: using rpm4" << endl;
#warning EXCEPTION: nonempty rpm4 and rpm3 database found.
                //ConvertDbReport::Send report( RpmDbCallbacks::convertDbReport );
                //report->start( dbInfo.dbV3().path() );
                //report->stop( some error );

                // set DbSI_MODIFIED_V4 as it's not a temporary which can be removed.
                dbsi_set( info_r, DbSI_MODIFIED_V4 );

              }

            DBG << "Convert state: " << info_r << ": " << stringPath( root_r, dbPath_r );
            librpmDb::dumpState( DBG ) << endl;
          }

        if ( dbInfo.hasDbV3ToV4() )
          {
            MIL << "Rpm3 database backup: " << dbInfo.dbV3ToV4() << endl;
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::removeV4
      //        METHOD TYPE : void
      //
      void RpmDb::removeV4( const Pathname & dbdir_r, bool v3backup_r )
      {
        const char * v3backup = "packages.rpm3";
        const char * master = "Packages";
        const char * index[] =
        {
          "Basenames",
          "Conflictname",
          "Depends",
          "Dirnames",
          "Filemd5s",
          "Group",
          "Installtid",
          "Name",
          "Providename",
          "Provideversion",
          "Pubkeys",
          "Requirename",
          "Requireversion",
          "Sha1header",
          "Sigmd5",
          "Triggername",
          // last entry!
          NULL
        };

        PathInfo pi( dbdir_r );
        if ( ! pi.isDir() )
          {
            ERR << "Can't remove rpm4 database in non directory: " << dbdir_r << endl;
            return;
          }

        for ( const char ** f = index; *f; ++f )
          {
            pi( dbdir_r + *f );
            if ( pi.isFile() )
              {
                filesystem::unlink( pi.path() );
              }
          }

        pi( dbdir_r + master );
        if ( pi.isFile() )
          {
            MIL << "Removing rpm4 database " << pi << endl;
            filesystem::unlink( pi.path() );
          }

        if ( v3backup_r )
          {
            pi( dbdir_r + v3backup );
            if ( pi.isFile() )
              {
                MIL << "Removing converted rpm3 database backup " << pi << endl;
                filesystem::unlink( pi.path() );
              }
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::removeV3
      //        METHOD TYPE : void
      //
      void RpmDb::removeV3( const Pathname & dbdir_r, bool v3backup_r )
      {
        const char * master = "packages.rpm";
        const char * index[] =
        {
          "conflictsindex.rpm",
          "fileindex.rpm",
          "groupindex.rpm",
          "nameindex.rpm",
          "providesindex.rpm",
          "requiredby.rpm",
          "triggerindex.rpm",
          // last entry!
          NULL
        };

        PathInfo pi( dbdir_r );
        if ( ! pi.isDir() )
          {
            ERR << "Can't remove rpm3 database in non directory: " << dbdir_r << endl;
            return;
          }

        for ( const char ** f = index; *f; ++f )
          {
            pi( dbdir_r + *f );
            if ( pi.isFile() )
              {
                filesystem::unlink( pi.path() );
              }
          }

#warning CHECK: compare vs existing v3 backup. notify root
        pi( dbdir_r + master );
        if ( pi.isFile() )
          {
            Pathname m( pi.path() );
            if ( v3backup_r )
              {
                // backup was already created
                filesystem::unlink( m );
                Pathname b( m.extend( "3" ) );
                pi( b ); // stat backup
              }
            else
              {
                Pathname b( m.extend( ".deleted" ) );
                pi( b );
                if ( pi.isFile() )
                  {
                    // rempve existing backup
                    filesystem::unlink( b );
                  }
                filesystem::rename( m, b );
                pi( b ); // stat backup
              }
            MIL << "(Re)moved rpm3 database to " << pi << endl;
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::modifyDatabase
      //        METHOD TYPE : void
      //
      void RpmDb::modifyDatabase()
      {
        if ( ! initialized() )
          return;

        // tag database as modified
        dbsi_set( _dbStateInfo, DbSI_MODIFIED_V4 );

        // Move outdated rpm3 database beside.
        if ( dbsi_has( _dbStateInfo, DbSI_HAVE_V3 ) )
          {
            MIL << "Update mode: Delayed cleanup: state " << _dbStateInfo << endl;
            removeV3( _root + _dbPath, dbsi_has( _dbStateInfo, DbSI_MADE_V3TOV4 ) );
            dbsi_clr( _dbStateInfo, DbSI_HAVE_V3 );
          }

        // invalidate Packages list
        _packages._valid = false;
      }

      //
      //
      //        METHOD NAME : RpmDb::closeDatabase
      //        METHOD TYPE : PMError
      //
      void RpmDb::closeDatabase()
      {
        if ( ! initialized() )
          {
            return;
          }

        MIL << "Calling closeDatabase: " << *this << endl;

        // Block further database access
        _packages.clear();
        librpmDb::blockAccess();

        // Check fate if old version database still present
        if ( dbsi_has( _dbStateInfo, DbSI_HAVE_V3 ) )
          {
            MIL << "Update mode: Delayed cleanup: state " << _dbStateInfo << endl;
            if ( dbsi_has( _dbStateInfo, DbSI_MODIFIED_V4 ) )
              {
                // Move outdated rpm3 database beside.
                removeV3( _root + _dbPath, dbsi_has( _dbStateInfo, DbSI_MADE_V3TOV4 )  );
              }
            else
              {
                // Remove unmodified rpm4 database
                removeV4( _root + _dbPath, dbsi_has( _dbStateInfo, DbSI_MADE_V3TOV4 ) );
              }
          }

        // Uninit
        _root = _dbPath = Pathname();
        _dbStateInfo = DbSI_NO_INIT;

        MIL << "closeDatabase: " << *this << endl;
      }

      //
      //
      //        METHOD NAME : RpmDb::rebuildDatabase
      //        METHOD TYPE : PMError
      //
      void RpmDb::rebuildDatabase()
      {
        callback::SendReport<RebuildDBReport> report;

        report->start( root() + dbPath() );

        try
          {
            doRebuildDatabase(report);
          }
        catch (RpmException & excpt_r)
          {
            report->finish(root() + dbPath(), RebuildDBReport::FAILED, excpt_r.asUserString());
            ZYPP_RETHROW(excpt_r);
          }
        report->finish(root() + dbPath(), RebuildDBReport::NO_ERROR, "");
      }

      void RpmDb::doRebuildDatabase(callback::SendReport<RebuildDBReport> & report)
      {
        FAILIFNOTINITIALIZED;

        MIL << "RpmDb::rebuildDatabase" << *this << endl;
        // FIXME  Timecount _t( "RpmDb::rebuildDatabase" );

        PathInfo dbMaster( root() + dbPath() + "Packages" );
        PathInfo dbMasterBackup( dbMaster.path().extend( ".y2backup" ) );

        // run rpm
        RpmArgVec opts;
        opts.push_back("--rebuilddb");
        opts.push_back("-vv");

        // don't call modifyDatabase because it would remove the old
        // rpm3 database, if the current database is a temporary one.
        // But do invalidate packages list.
        _packages._valid = false;
        run_rpm (opts, ExternalProgram::Stderr_To_Stdout);

        // progress report: watch this file growing
        PathInfo newMaster( root()
                            + dbPath().extend( str::form( "rebuilddb.%d",
                                                          process?process->getpid():0) )
                            + "Packages" );

        string       line;
        string       errmsg;

        while ( systemReadLine( line ) )
          {
            if ( newMaster() )
              { // file is removed at the end of rebuild.
                // current size should be upper limit for new db
                report->progress( (100 * newMaster.size()) / dbMaster.size(), root() + dbPath());
              }

            if ( line.compare( 0, 2, "D:" ) )
              {
                errmsg += line + '\n';
                //      report.notify( line );
                WAR << line << endl;
              }
          }

        int rpm_status = systemStatus();

        if ( rpm_status != 0 )
          {
            ZYPP_THROW(RpmSubprocessException(string("rpm failed with message: ") + errmsg));
          }
        else
          {
            report->progress( 100, root() + dbPath() ); // 100%
          }
      }

      void RpmDb::exportTrustedKeysInZyppKeyRing()
      {
        MIL << "Exporting rpm keyring into zypp trusted keyring" <<std::endl;

        std::set<Edition> rpm_keys = pubkeyEditions();

        std::list<PublicKey> zypp_keys;
        zypp_keys = getZYpp()->keyRing()->trustedPublicKeys();

        for ( std::set<Edition>::const_iterator it = rpm_keys.begin(); it != rpm_keys.end(); ++it)
          {
            // search the zypp key into the rpm keys
            // long id is edition version + release
            std::string id = str::toUpper( (*it).version() + (*it).release());
            std::list<PublicKey>::iterator ik = find( zypp_keys.begin(), zypp_keys.end(), id);
            if ( ik != zypp_keys.end() )
              {
                MIL << "Key " << (*it) << " is already in zypp database." << std::endl;
              }
            else
              {
                // we export the rpm key into a file
                RpmHeader::constPtr result = new RpmHeader();
                getData( std::string("gpg-pubkey"), *it, result );
                TmpFile file(getZYpp()->tmpPath());
                std::ofstream os;
                try
                  {
                    os.open(file.path().asString().c_str());
                    // dump rpm key into the tmp file
                    os << result->tag_description();
                    //MIL << "-----------------------------------------------" << std::endl;
                    //MIL << result->tag_description() <<std::endl;
                    //MIL << "-----------------------------------------------" << std::endl;
                    os.close();
                  }
                catch (std::exception &e)
                  {
                    ERR << "Could not dump key " << (*it) << " in tmp file " << file.path() << std::endl;
                    // just ignore the key
                  }

                // now import the key in zypp
                try
                  {
                    getZYpp()->keyRing()->importKey( file.path(), true /*trusted*/);
                    MIL << "Trusted key " << (*it) << " imported in zypp keyring." << std::endl;
                  }
                catch (Exception &e)
                  {
                    ERR << "Could not import key " << (*it) << " in zypp keyring" << std::endl;
                  }
              }
          }
      }

      void RpmDb::importZyppKeyRingTrustedKeys()
      {
        MIL << "Importing zypp trusted keyring" << std::endl;

        std::list<PublicKey> rpm_keys = pubkeys();

        std::list<PublicKey> zypp_keys;

        zypp_keys = getZYpp()->keyRing()->trustedPublicKeys();

        for ( std::list<PublicKey>::const_iterator it = zypp_keys.begin(); it != zypp_keys.end(); ++it)
          {
            // we find only the left part of the long gpg key, as rpm does not support long ids
            std::list<PublicKey>::iterator ik = find( rpm_keys.begin(), rpm_keys.end(), (*it));
            if ( ik != rpm_keys.end() )
              {
                MIL << "Key " << (*it).id() << " (" << (*it).name() << ") is already in rpm database." << std::endl;
              }
            else
              {
                // now import the key in rpm
                try
                  {
                    importPubkey((*it).path());
                    MIL << "Trusted key " << (*it).id() << " (" << (*it).name() << ") imported in rpm database." << std::endl;
                  }
                catch (RpmException &e)
                  {
                    ERR << "Could not import key " << (*it).id() << " (" << (*it).name() << " from " << (*it).path() << " in rpm database" << std::endl;
                  }
              }
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::importPubkey
      //        METHOD TYPE : PMError
      //
      void RpmDb::importPubkey( const Pathname & pubkey_r )
      {
        FAILIFNOTINITIALIZED;

        RpmArgVec opts;
        opts.push_back ( "--import" );
        opts.push_back ( "--" );
        opts.push_back ( pubkey_r.asString().c_str() );

        // don't call modifyDatabase because it would remove the old
        // rpm3 database, if the current database is a temporary one.
        // But do invalidate packages list.
        _packages._valid = false;
        run_rpm( opts, ExternalProgram::Stderr_To_Stdout );

        string line;
        while ( systemReadLine( line ) )
          {
            if ( line.substr( 0, 6 ) == "error:" )
              {
                WAR << line << endl;
              }
            else
              {
                DBG << line << endl;
              }
          }

        int rpm_status = systemStatus();

        if ( rpm_status != 0 )
          {
            ZYPP_THROW(RpmSubprocessException(string("Failed to import public key from file ") + pubkey_r.asString() + string(": rpm returned  ") + str::numstring(rpm_status)));
          }
        else
          {
            MIL << "Imported public key from file " << pubkey_r << endl;
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::pubkeys
      //        METHOD TYPE : set<Edition>
      //
      list<PublicKey> RpmDb::pubkeys() const
      {
        list<PublicKey> ret;

        librpmDb::db_const_iterator it;
        for ( it.findByName( string( "gpg-pubkey" ) ); *it; ++it )
          {
            Edition edition = it->tag_edition();
            if (edition != Edition::noedition)
              {
                // we export the rpm key into a file
                RpmHeader::constPtr result = new RpmHeader();
                getData( std::string("gpg-pubkey"), edition, result );
                TmpFile file(getZYpp()->tmpPath());
                std::ofstream os;
                try
                  {
                    os.open(file.path().asString().c_str());
                    // dump rpm key into the tmp file
                    os << result->tag_description();
                    //MIL << "-----------------------------------------------" << std::endl;
                    //MIL << result->tag_description() <<std::endl;
                    //MIL << "-----------------------------------------------" << std::endl;
                    os.close();
                    // read the public key from the dumped file
                    PublicKey key(file.path());
                    ret.push_back(key);
                  }
                catch (std::exception &e)
                  {
                    ERR << "Could not dump key " << edition.asString() << " in tmp file " << file.path() << std::endl;
                    // just ignore the key
                  }
              }
          }
        return ret;
      }

      set<Edition> RpmDb::pubkeyEditions() const
      {
        set<Edition> ret;

        librpmDb::db_const_iterator it;
        for ( it.findByName( string( "gpg-pubkey" ) ); *it; ++it )
          {
            Edition edition = it->tag_edition();
            if (edition != Edition::noedition)
              ret.insert( edition );
          }
        return ret;
      }

      //
      //
      //        METHOD NAME : RpmDb::packagesValid
      //        METHOD TYPE : bool
      //
      bool RpmDb::packagesValid() const
      {
        return( _packages._valid || ! initialized() );
      }

      //
      //
      //        METHOD NAME : RpmDb::getPackages
      //        METHOD TYPE : const std::list<Package::Ptr> &
      //
      //        DESCRIPTION :
      //
      const std::list<Package::Ptr> & RpmDb::getPackages()
      {
        callback::SendReport<ScanDBReport> report;

        report->start ();

        try
          {
            const std::list<Package::Ptr> & ret = doGetPackages(report);
            report->finish(ScanDBReport::NO_ERROR, "");
            return ret;
          }
        catch (RpmException & excpt_r)
          {
            report->finish(ScanDBReport::FAILED, excpt_r.asUserString ());
            ZYPP_RETHROW(excpt_r);
          }
#warning fixme
        static const std::list<Package::Ptr> empty_list;
        return empty_list;
      }


      //
      // make Package::Ptr from RpmHeader
      // return NULL on error
      //
      Package::Ptr RpmDb::makePackageFromHeader( const RpmHeader::constPtr header, std::set<std::string> * filerequires, const Pathname & location, Source_Ref source )
      {
        if ( ! header )
          return 0;

        if ( header->isSrc() )
          {
            WAR << "Can't make Package from SourcePackage header" << endl;
            return 0;
          }

        Package::Ptr pptr;

        string name = header->tag_name();

        // create dataprovider
        detail::ResImplTraits<RPMPackageImpl>::Ptr impl( new RPMPackageImpl( header ) );

        impl->setSource( source );
        if (!location.empty())
          impl->setLocation( location );

        Edition edition;
        try
          {
            edition = Edition( header->tag_version(),
                               header->tag_release(),
                               header->tag_epoch());
          }
        catch (Exception & excpt_r)
          {
            ZYPP_CAUGHT( excpt_r );
            WAR << "Package " << name << " has bad edition '"
            << (header->tag_epoch().empty()?"":(header->tag_epoch()+":"))
            << header->tag_version()
            << (header->tag_release().empty()?"":(string("-") + header->tag_release())) << "'";
            return pptr;
          }

        Arch arch;
        try
          {
            arch = Arch( header->tag_arch() );
          }
        catch (Exception & excpt_r)
          {
            ZYPP_CAUGHT( excpt_r );
            WAR << "Package " << name << " has bad architecture '" << header->tag_arch() << "'";
            return pptr;
          }

        // Collect basic Resolvable data
        NVRAD dataCollect( header->tag_name(),
                           edition,
                           arch );

        list<string> filenames = impl->filenames();
        dataCollect[Dep::PROVIDES] = header->tag_provides ( filerequires );
        CapFactory capfactory;

        static str::smatch what;
        static const str::regex filenameRegex( "/(s?bin|lib(64)?|etc)/|^/usr/(games/|share/(dict/words|magic\\.mime)$)|^/opt/gnome/games/",
                                               str::regex::optimize|str::regex::nosubs );

        for (list<string>::const_iterator filename = filenames.begin();
              filename != filenames.end();
              ++filename)
          {
            if ( str::regex_search( filename->begin(), filename->end(), what, filenameRegex ) )
              {
                try
                  {
                    dataCollect[Dep::PROVIDES].insert( capfactory.parse(ResTraits<Package>::kind, *filename) );
                  }
                catch (Exception & excpt_r)
                  {
                    ZYPP_CAUGHT( excpt_r );
                    WAR << "Ignoring invalid capability: " << *filename << endl;
                  }
              }
          }

        dataCollect[Dep::REQUIRES]    = header->tag_requires( filerequires );
        dataCollect[Dep::PREREQUIRES] = header->tag_prerequires( filerequires );
        dataCollect[Dep::CONFLICTS]   = header->tag_conflicts( filerequires );
        dataCollect[Dep::OBSOLETES]   = header->tag_obsoletes( filerequires );
        dataCollect[Dep::ENHANCES]    = header->tag_enhances( filerequires );
        dataCollect[Dep::SUPPLEMENTS] = header->tag_supplements( filerequires );

        try
          {
            // create package from dataprovider
            pptr = detail::makeResolvableFromImpl( dataCollect, impl );
          }
        catch (Exception & excpt_r)
          {
            ZYPP_CAUGHT( excpt_r );
            ERR << "Can't create Package::Ptr" << endl;
          }

        return pptr;
      }


      const std::list<Package::Ptr> & RpmDb::doGetPackages(callback::SendReport<ScanDBReport> & report)
      {
        if ( packagesValid() )
          {
            return _packages._list;
          }

        _packages.clear();

        // Collect package data.
        unsigned expect = 0;
        librpmDb::constPtr dbptr;
        librpmDb::dbAccess( dbptr );
        expect = dbptr->size();
        DBG << "Expecting " << expect << " packages" << endl;

        librpmDb::db_const_iterator iter;
        unsigned current = 0;
        CapFactory _f;
        Pathname location;

        for ( iter.findAll(); *iter; ++iter, ++current, report->progress( (100*current)/expect))
          {

            string name = iter->tag_name();
            if ( name == string( "gpg-pubkey" ) )
              {
                DBG << "Ignoring pseudo package " << name << endl;
                // pseudo package filtered, as we can't handle multiple instances
                // of 'gpg-pubkey-VERS-REL'.
                continue;
              }
            Date installtime = iter->tag_installtime();

            Package::Ptr pptr = makePackageFromHeader( *iter, &_filerequires, location, Source_Ref() );

            _packages._list.push_back( pptr );
          }
        _packages.buildIndex();
        DBG << "Found installed packages: " << _packages._list.size() << endl;

        // Evaluate filerequires collected so far
        for ( set<string>::iterator it = _filerequires.begin(); it != _filerequires.end(); ++it )
          {

            for ( iter.findByFile( *it ); *iter; ++iter )
              {
                Package::Ptr pptr = _packages.lookup( iter->tag_name() );
                if ( !pptr )
                  {
                    WAR << "rpmdb.findByFile returned unknown package " << *iter << endl;
                    continue;
                  }
                pptr->injectProvides(_f.parse(ResTraits<Package>::kind, *it));
              }

          }

        // Build final packages list
        return _packages._list;
      }

      //
      //
      //        METHOD NAME : RpmDb::fileList
      //        METHOD TYPE : bool
      //
      //        DESCRIPTION :
      //
      std::list<FileInfo>
      RpmDb::fileList( const std::string & name_r, const Edition & edition_r ) const
      {
        std::list<FileInfo> result;

        librpmDb::db_const_iterator it;
        bool found;
        if (edition_r == Edition::noedition)
          {
            found = it.findPackage( name_r );
          }
        else
          {
            found = it.findPackage( name_r, edition_r );
          }
        if (!found)
          return result;

        return result;
      }


      //
      //
      //        METHOD NAME : RpmDb::hasFile
      //        METHOD TYPE : bool
      //
      //        DESCRIPTION :
      //
      bool RpmDb::hasFile( const std::string & file_r, const std::string & name_r ) const
      {
        librpmDb::db_const_iterator it;
        bool res;
        do
        {
          res = it.findByFile( file_r );
          if (!res) break;
          if (!name_r.empty())
            {
              res = (it->tag_name() == name_r);
            }
          ++it;
        }
        while (res && *it);
        return res;
      }

      //
      //
      //        METHOD NAME : RpmDb::whoOwnsFile
      //        METHOD TYPE : string
      //
      //        DESCRIPTION :
      //
      std::string RpmDb::whoOwnsFile( const std::string & file_r) const
      {
        librpmDb::db_const_iterator it;
        if (it.findByFile( file_r ))
          {
            return it->tag_name();
          }
        return "";
      }

      //
      //
      //        METHOD NAME : RpmDb::hasProvides
      //        METHOD TYPE : bool
      //
      //        DESCRIPTION :
      //
      bool RpmDb::hasProvides( const std::string & tag_r ) const
      {
        librpmDb::db_const_iterator it;
        return it.findByProvides( tag_r );
      }

      //
      //
      //        METHOD NAME : RpmDb::hasRequiredBy
      //        METHOD TYPE : bool
      //
      //        DESCRIPTION :
      //
      bool RpmDb::hasRequiredBy( const std::string & tag_r ) const
      {
        librpmDb::db_const_iterator it;
        return it.findByRequiredBy( tag_r );
      }

      //
      //
      //        METHOD NAME : RpmDb::hasConflicts
      //        METHOD TYPE : bool
      //
      //        DESCRIPTION :
      //
      bool RpmDb::hasConflicts( const std::string & tag_r ) const
      {
        librpmDb::db_const_iterator it;
        return it.findByConflicts( tag_r );
      }

      //
      //
      //        METHOD NAME : RpmDb::hasPackage
      //        METHOD TYPE : bool
      //
      //        DESCRIPTION :
      //
      bool RpmDb::hasPackage( const string & name_r ) const
      {
        librpmDb::db_const_iterator it;
        return it.findPackage( name_r );
      }

      //
      //
      //        METHOD NAME : RpmDb::hasPackage
      //        METHOD TYPE : bool
      //
      //        DESCRIPTION :
      //
      bool RpmDb::hasPackage( const string & name_r, const Edition & ed_r ) const
      {
        librpmDb::db_const_iterator it;
        return it.findPackage( name_r, ed_r );
      }

      //
      //
      //        METHOD NAME : RpmDb::getData
      //        METHOD TYPE : PMError
      //
      //        DESCRIPTION :
      //
      void RpmDb::getData( const string & name_r,
                           RpmHeader::constPtr & result_r ) const
      {
        librpmDb::db_const_iterator it;
        it.findPackage( name_r );
        result_r = *it;
        if (it.dbError())
          ZYPP_THROW(*(it.dbError()));
      }

      //
      //
      //        METHOD NAME : RpmDb::getData
      //        METHOD TYPE : void
      //
      //        DESCRIPTION :
      //
      void RpmDb::getData( const std::string & name_r, const Edition & ed_r,
                           RpmHeader::constPtr & result_r ) const
      {
        librpmDb::db_const_iterator it;
        it.findPackage( name_r, ed_r  );
        result_r = *it;
        if (it.dbError())
          ZYPP_THROW(*(it.dbError()));
      }

      //
      //        METHOD NAME : RpmDb::checkPackage
      //        METHOD TYPE : RpmDb::checkPackageResult
      //
      RpmDb::checkPackageResult RpmDb::checkPackage( const Pathname & path_r )
      {
        PathInfo file( path_r );
        if ( ! file.isFile() ) {
          ERR << "Not a file: " << file << endl;
          return CHK_ERROR;
        }

        FD_t fd = ::Fopen( file.asString().c_str(), "r.ufdio" );
        if ( fd == 0 || ::Ferror(fd) ) {
          ERR << "Can't open file for reading: " << file << " (" << ::Fstrerror(fd) << ")" << endl;
          if ( fd )
            ::Fclose( fd );
          return CHK_ERROR;
        }

        rpmts ts = ::rpmtsCreate();
        ::rpmtsSetRootDir( ts, root().asString().c_str() );
        ::rpmtsSetVSFlags( ts, RPMVSF_DEFAULT );
        int res = ::rpmReadPackageFile( ts, fd, path_r.asString().c_str(), NULL );
        ts = ::rpmtsFree(ts);

        ::Fclose( fd );

        switch ( res )
          {
          case RPMRC_OK:
            return CHK_OK;
            break;
          case RPMRC_NOTFOUND:
            WAR << "Signature is unknown type. " << file << endl;
            return CHK_NOTFOUND;
            break;
          case RPMRC_FAIL:
            WAR << "Signature does not verify. " << file << endl;
            return CHK_FAIL;
            break;
          case RPMRC_NOTTRUSTED:
            WAR << "Signature is OK, but key is not trusted. " << file << endl;
            return CHK_NOTTRUSTED;
            break;
          case RPMRC_NOKEY:
            WAR << "Public key is unavailable. " << file << endl;
            return CHK_NOKEY;
            break;
          }
        ERR << "Error reading header." << file << endl;
        return CHK_ERROR;
      }

      // determine changed files of installed package
      bool
      RpmDb::queryChangedFiles(FileList & fileList, const string& packageName)
      {
        bool ok = true;

        fileList.clear();

        if ( ! initialized() ) return false;

        RpmArgVec opts;

        opts.push_back ("-V");
        opts.push_back ("--nodeps");
        opts.push_back ("--noscripts");
        opts.push_back ("--nomd5");
        opts.push_back ("--");
        opts.push_back (packageName.c_str());

        run_rpm (opts, ExternalProgram::Discard_Stderr);

        if ( process == NULL )
          return false;

        /* from rpm manpage
         5      MD5 sum
         S      File size
         L      Symlink
         T      Mtime
         D      Device
         U      User
         G      Group
         M      Mode (includes permissions and file type)
        */

        string line;
        while (systemReadLine(line))
          {
            if (line.length() > 12 &&
                 (line[0] == 'S' || line[0] == 's' ||
                   (line[0] == '.' && line[7] == 'T')))
              {
                // file has been changed
                string filename;

                filename.assign(line, 11, line.length() - 11);
                fileList.insert(filename);
              }
          }

        systemStatus();
        // exit code ignored, rpm returns 1 no matter if package is installed or
        // not

        return ok;
      }



      /****************************************************************/
      /* private member-functions                                       */
      /****************************************************************/

      /*--------------------------------------------------------------*/
      /* Run rpm with the specified arguments, handling stderr  */
      /* as specified  by disp                                  */
      /*--------------------------------------------------------------*/
      void
      RpmDb::run_rpm (const RpmArgVec& opts,
                       ExternalProgram::Stderr_Disposition disp)
      {
        if ( process )
          {
            delete process;
            process = NULL;
          }
        exit_code = -1;

        if ( ! initialized() )
          {
            ZYPP_THROW(RpmDbNotOpenException());
          }

        RpmArgVec args;

        // always set root and dbpath
        args.push_back("rpm");
        args.push_back("--root");
        args.push_back(_root.asString().c_str());
        args.push_back("--dbpath");
        args.push_back(_dbPath.asString().c_str());

        const char* argv[args.size() + opts.size() + 1];

        const char** p = argv;
        p = copy (args.begin (), args.end (), p);
        p = copy (opts.begin (), opts.end (), p);
        *p = 0;

        // Invalidate all outstanding database handles in case
        // the database gets modified.
        librpmDb::dbRelease( true );

        // Launch the program with default locale
        process = new ExternalProgram(argv, disp, false, -1, true);
        return;
      }

      /*--------------------------------------------------------------*/
      /* Read a line from the rpm process                               */
      /*--------------------------------------------------------------*/
      bool
      RpmDb::systemReadLine(string &line)
      {
        line.erase();

        if ( process == NULL )
          return false;

        line = process->receiveLine();

        if (line.length() == 0)
          return false;

        if (line[line.length() - 1] == '\n')
          line.erase(line.length() - 1);

        return true;
      }

      /*--------------------------------------------------------------*/
      /* Return the exit status of the rpm process, closing the */
      /* connection if not already done                         */
      /*--------------------------------------------------------------*/
      int
      RpmDb::systemStatus()
      {
        if ( process == NULL )
          return -1;

        exit_code = process->close();
        process->kill();
        delete process;
        process = 0;

        //   DBG << "exit code " << exit_code << endl;

        return exit_code;
      }

      /*--------------------------------------------------------------*/
      /* Forcably kill the rpm process                          */
      /*--------------------------------------------------------------*/
      void
      RpmDb::systemKill()
      {
        if (process) process->kill();
      }


      // generate diff mails for config files
      void RpmDb::processConfigFiles(const string& line, const string& name, const char* typemsg, const char* difffailmsg, const char* diffgenmsg)
      {
        string msg = line.substr(9);
        string::size_type pos1 = string::npos;
        string::size_type pos2 = string::npos;
        string file1s, file2s;
        Pathname file1;
        Pathname file2;

        pos1 = msg.find (typemsg);
        for (;;)
          {
            if ( pos1 == string::npos )
              break;

            pos2 = pos1 + strlen (typemsg);

            if (pos2 >= msg.length() )
              break;

            file1 = msg.substr (0, pos1);
            file2 = msg.substr (pos2);

            file1s = file1.asString();
            file2s = file2.asString();

            if (!_root.empty() && _root != "/")
              {
                file1 = _root + file1;
                file2 = _root + file2;
              }

            string out;
            int ret = diffFiles (file1.asString(), file2.asString(), out, 25);
            if (ret)
              {
                Pathname file = _root + WARNINGMAILPATH;
                if (filesystem::assert_dir(file) != 0)
                  {
                    ERR << "Could not create " << file.asString() << endl;
                    break;
                  }
                file += Date(Date::now()).form("config_diff_%Y_%m_%d.log");
                ofstream notify(file.asString().c_str(), std::ios::out|std::ios::app);
                if (!notify)
                  {
                    ERR << "Could not open " <<  file << endl;
                    break;
                  }

                // Translator: %s = name of an rpm package. A list of diffs follows
                // this message.
                notify << str::form(_("Changed configuration files for %s:"), name.c_str()) << endl;
                if (ret>1)
                  {
                    ERR << "diff failed" << endl;
                    notify << str::form(difffailmsg,
                                         file1s.c_str(), file2s.c_str()) << endl;
                  }
                else
                  {
                    notify << str::form(diffgenmsg,
                                         file1s.c_str(), file2s.c_str()) << endl;

                    // remove root for the viewer's pleasure (#38240)
                    if (!_root.empty() && _root != "/")
                      {
                        if (out.substr(0,4) == "--- ")
                          {
                            out.replace(4, file1.asString().length(), file1s);
                          }
                        string::size_type pos = out.find("\n+++ ");
                        if (pos != string::npos)
                          {
                            out.replace(pos+5, file2.asString().length(), file2s);
                          }
                      }
                    notify << out << endl;
                  }
                notify.close();
                notify.open("/var/lib/update-messages/yast2-packagemanager.rpmdb.configfiles");
                notify.close();
              }
            else
              {
                WAR << "rpm created " << file2 << " but it is not different from " << file2 << endl;
              }
            break;
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::installPackage
      //        METHOD TYPE : PMError
      //
      void RpmDb::installPackage( const Pathname & filename, unsigned flags )
      {
        callback::SendReport<RpmInstallReport> report;

        report->start(filename);

        do
        try
          {
            doInstallPackage(filename, flags, report);
            report->finish();
            break;
          }
        catch (RpmException & excpt_r)
          {
            RpmInstallReport::Action user = report->problem( excpt_r );

            if ( user == RpmInstallReport::ABORT )
              {
                report->finish( excpt_r );
                ZYPP_RETHROW(excpt_r);
              }
            else if ( user == RpmInstallReport::IGNORE )
              {
                break;
              }
          }
        while (true);
      }

      void RpmDb::doInstallPackage( const Pathname & filename, unsigned flags, callback::SendReport<RpmInstallReport> & report )
      {
        FAILIFNOTINITIALIZED;
        CommitLog progresslog;

        MIL << "RpmDb::installPackage(" << filename << "," << flags << ")" << endl;


        // backup
        if ( _packagebackups )
          {
            // FIXME      report->progress( pd.init( -2, 100 ) ); // allow 1% for backup creation.
            if ( ! backupPackage( filename ) )
              {
                ERR << "backup of " << filename.asString() << " failed" << endl;
              }
            // FIXME status handling
            report->progress( 0 ); // allow 1% for backup creation.
          }
        else
          {
            report->progress( 100 );
          }

        // run rpm
        RpmArgVec opts;
        if (flags & RPMINST_NOUPGRADE)
          opts.push_back("-i");
        else
          opts.push_back("-U");
        opts.push_back("--percent");

        if (flags & RPMINST_NODIGEST)
          opts.push_back("--nodigest");
        if (flags & RPMINST_NOSIGNATURE)
          opts.push_back("--nosignature");
        if (flags & RPMINST_NODOCS)
          opts.push_back ("--excludedocs");
        if (flags & RPMINST_NOSCRIPTS)
          opts.push_back ("--noscripts");
        if (flags & RPMINST_FORCE)
          opts.push_back ("--force");
        if (flags & RPMINST_NODEPS)
          opts.push_back ("--nodeps");
        if (flags & RPMINST_IGNORESIZE)
          opts.push_back ("--ignoresize");
        if (flags & RPMINST_JUSTDB)
          opts.push_back ("--justdb");
        if (flags & RPMINST_TEST)
          opts.push_back ("--test");

        opts.push_back("--");
        opts.push_back (filename.asString().c_str());

        modifyDatabase(); // BEFORE run_rpm
        run_rpm( opts, ExternalProgram::Stderr_To_Stdout );

        string line;
        string rpmmsg;
        vector<string> configwarnings;
        vector<string> errorlines;

        while (systemReadLine(line))
          {
            if (line.substr(0,2)=="%%")
              {
                int percent;
                sscanf (line.c_str () + 2, "%d", &percent);
                report->progress( percent );
              }
            else
              rpmmsg += line+'\n';

            if ( line.substr(0,8) == "warning:" )
              {
                configwarnings.push_back(line);
              }
          }
        int rpm_status = systemStatus();

        // evaluate result
        for (vector<string>::iterator it = configwarnings.begin();
              it != configwarnings.end(); ++it)
          {
            processConfigFiles(*it, Pathname::basename(filename), " saved as ",
                                // %s = filenames
                                _("rpm saved %s as %s but it was impossible to determine the difference"),
                                // %s = filenames
                                _("rpm saved %s as %s.\nHere are the first 25 lines of difference:\n"));
            processConfigFiles(*it, Pathname::basename(filename), " created as ",
                                // %s = filenames
                                _("rpm created %s as %s but it was impossible to determine the difference"),
                                // %s = filenames
                                _("rpm created %s as %s.\nHere are the first 25 lines of difference:\n"));
          }

        if ( rpm_status != 0 )
          {
            // %s = filename of rpm package
            progresslog(/*timestamp*/true) << str::form(_("%s install failed"), Pathname::basename(filename).c_str()) << endl;
            progresslog() << _("rpm output:") << endl << rpmmsg << endl;
            ZYPP_THROW(RpmSubprocessException(string("RPM failed: ") + rpmmsg));
          }
        else
          {
            // %s = filename of rpm package
            progresslog(/*timestamp*/true) << str::form(_("%s installed ok"), Pathname::basename(filename).c_str()) << endl;
            if ( ! rpmmsg.empty() )
              {
                progresslog() << _("Additional rpm output:") << endl << rpmmsg << endl;
              }
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::removePackage
      //        METHOD TYPE : PMError
      //
      void RpmDb::removePackage( Package::constPtr package, unsigned flags )
      {
        return removePackage( package->name()
                              + "-" + package->edition().asString()
                              + "." + package->arch().asString(), flags );
      }

      //
      //
      //        METHOD NAME : RpmDb::removePackage
      //        METHOD TYPE : PMError
      //
      void RpmDb::removePackage( const string & name_r, unsigned flags )
      {
        callback::SendReport<RpmRemoveReport> report;

        report->start( name_r );

        try
          {
            doRemovePackage(name_r, flags, report);
          }
        catch (RpmException & excpt_r)
          {
            report->finish(excpt_r);
            ZYPP_RETHROW(excpt_r);
          }
        report->finish();
      }


      void RpmDb::doRemovePackage( const string & name_r, unsigned flags, callback::SendReport<RpmRemoveReport> & report )
      {
        FAILIFNOTINITIALIZED;
        CommitLog progresslog;

        MIL << "RpmDb::doRemovePackage(" << name_r << "," << flags << ")" << endl;

        // backup
        if ( _packagebackups )
          {
            // FIXME solve this status report somehow
            //      report->progress( pd.init( -2, 100 ) ); // allow 1% for backup creation.
            if ( ! backupPackage( name_r ) )
              {
                ERR << "backup of " << name_r << " failed" << endl;
              }
            report->progress( 0 );
          }
        else
          {
            report->progress( 100 );
          }

        // run rpm
        RpmArgVec opts;
        opts.push_back("-e");
        opts.push_back("--allmatches");

        if (flags & RPMINST_NOSCRIPTS)
          opts.push_back("--noscripts");
        if (flags & RPMINST_NODEPS)
          opts.push_back("--nodeps");
        if (flags & RPMINST_JUSTDB)
          opts.push_back("--justdb");
        if (flags & RPMINST_TEST)
          opts.push_back ("--test");
        if (flags & RPMINST_FORCE)
          {
            WAR << "IGNORE OPTION: 'rpm -e' does not support '--force'" << endl;
          }

        opts.push_back("--");
        opts.push_back(name_r.c_str());

        modifyDatabase(); // BEFORE run_rpm
        run_rpm (opts, ExternalProgram::Stderr_To_Stdout);

        string line;
        string rpmmsg;

        // got no progress from command, so we fake it:
        // 5  - command started
        // 50 - command completed
        // 100 if no error
        report->progress( 5 );
        while (systemReadLine(line))
          {
            rpmmsg += line+'\n';
          }
        report->progress( 50 );
        int rpm_status = systemStatus();

        if ( rpm_status != 0 )
          {
            // %s = name of rpm package
            progresslog(/*timestamp*/true) << str::form(_("%s remove failed"), name_r.c_str()) << endl;
            progresslog() << _("rpm output:") << endl << rpmmsg << endl;
            ZYPP_THROW(RpmSubprocessException(string("RPM failed: ") + rpmmsg));
          }
        else
          {
            progresslog(/*timestamp*/true) << str::form(_("%s remove ok"), name_r.c_str()) << endl;
            if ( ! rpmmsg.empty() )
              {
                progresslog() << _("Additional rpm output:") << endl << rpmmsg << endl;
              }
          }
      }

      //
      //
      //        METHOD NAME : RpmDb::backupPackage
      //        METHOD TYPE : bool
      //
      bool RpmDb::backupPackage( const Pathname & filename )
      {
        RpmHeader::constPtr h( RpmHeader::readPackage( filename, RpmHeader::NOSIGNATURE ) );
        if ( ! h )
          return false;

        return backupPackage( h->tag_name() );
      }

      //
      //
      //        METHOD NAME : RpmDb::backupPackage
      //        METHOD TYPE : bool
      //
      bool RpmDb::backupPackage(const string& packageName)
      {
        CommitLog progresslog;
        bool ret = true;
        Pathname backupFilename;
        Pathname filestobackupfile = _root+_backuppath+FILEFORBACKUPFILES;

        if (_backuppath.empty())
          {
            INT << "_backuppath empty" << endl;
            return false;
          }

        FileList fileList;

        if (!queryChangedFiles(fileList, packageName))
          {
            ERR << "Error while getting changed files for package " <<
            packageName << endl;
            return false;
          }

        if (fileList.size() <= 0)
          {
            DBG <<  "package " <<  packageName << " not changed -> no backup" << endl;
            return true;
          }

        if (filesystem::assert_dir(_root + _backuppath) != 0)
          {
            return false;
          }

        {
          // build up archive name
          time_t currentTime = time(0);
          struct tm *currentLocalTime = localtime(&currentTime);

          int date = (currentLocalTime->tm_year + 1900) * 10000
          + (currentLocalTime->tm_mon + 1) * 100
          + currentLocalTime->tm_mday;

          int num = 0;
          do
          {
            backupFilename = _root + _backuppath
            + str::form("%s-%d-%d.tar.gz",packageName.c_str(), date, num);

          }
          while ( PathInfo(backupFilename).isExist() && num++ < 1000);

          PathInfo pi(filestobackupfile);
          if (pi.isExist() && !pi.isFile())
            {
              ERR << filestobackupfile.asString() << " already exists and is no file" << endl;
              return false;
            }

          std::ofstream fp ( filestobackupfile.asString().c_str(), std::ios::out|std::ios::trunc );

          if (!fp)
            {
              ERR << "could not open " << filestobackupfile.asString() << endl;
              return false;
            }

          for (FileList::const_iterator cit = fileList.begin();
                cit != fileList.end(); ++cit)
            {
              string name = *cit;
              if ( name[0] == '/' )
                {
                  // remove slash, file must be relative to -C parameter of tar
                  name = name.substr( 1 );
                }
              DBG << "saving file "<< name << endl;
              fp << name << endl;
            }
          fp.close();

          const char* const argv[] =
          {
            "tar",
            "-czhP",
            "-C",
            _root.asString().c_str(),
            "--ignore-failed-read",
            "-f",
            backupFilename.asString().c_str(),
            "-T",
            filestobackupfile.asString().c_str(),
            NULL
          };

          // execute tar in inst-sys (we dont know if there is a tar below _root !)
          ExternalProgram tar(argv, ExternalProgram::Stderr_To_Stdout, false, -1, true);

          string tarmsg;

          // TODO: its probably possible to start tar with -v and watch it adding
          // files to report progress
          for (string output = tar.receiveLine(); output.length() ;output = tar.receiveLine())
            {
              tarmsg+=output;
            }

          int ret = tar.close();

          if ( ret != 0)
            {
              ERR << "tar failed: " << tarmsg << endl;
              ret = false;
            }
          else
            {
              MIL << "tar backup ok" << endl;
              progresslog(/*timestamp*/true) << str::form(_("created backup %s"), backupFilename.asString().c_str()) << endl;
            }

          filesystem::unlink(filestobackupfile);
        }

          return ret;
      }

      void RpmDb::setBackupPath(const Pathname& path)
      {
        _backuppath = path;
      }

    } // namespace rpm
  } // namespace target
} // namespace zypp

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