zypp/RepoManager.cc

   1 /*---------------------------------------------------------------------\
   2 |                          ____ _   __ __ ___                          |
   3 |                         |__  / \ / / . \ . \                         |
   4 |                           / / \ V /|  _/  _/                         |
   5 |                          / /__ | | | | | |                           |
   6 |                         /_____||_| |_| |_|                           |
   7 |                                                                      |
   8 \---------------------------------------------------------------------*/
   9 /** \file       zypp/RepoManager.cc
  10  *
  11 */
  12
  13 #include <iostream>
  14 #include <fstream>
  15 #include <list>
  16 #include <algorithm>
  17 #include "zypp/base/InputStream.h"
  18 #include "zypp/base/Logger.h"
  19 #include "zypp/base/Gettext.h"
  20 #include "zypp/base/Function.h"
  21 #include "zypp/PathInfo.h"
  22 #include "zypp/TmpPath.h"
  23
  24 #include "zypp/repo/RepoException.h"
  25 #include "zypp/RepoManager.h"
  26
  27 #include "zypp/cache/CacheStore.h"
  28 #include "zypp/repo/cached/RepoImpl.h"
  29 #include "zypp/media/MediaManager.h"
  30 #include "zypp/MediaSetAccess.h"
  31
  32 #include "zypp/parser/RepoFileReader.h"
  33 #include "zypp/repo/yum/Downloader.h"
  34 #include "zypp/parser/yum/RepoParser.h"
  35 #include "zypp/parser/plaindir/RepoParser.h"
  36 #include "zypp/repo/susetags/Downloader.h"
  37 #include "zypp/parser/susetags/RepoParser.h"
  38
  39 #include "zypp/ZYppCallbacks.h"
  40
  41 using namespace std;
  42 using namespace zypp;
  43 using namespace zypp::repo;
  44 using namespace zypp::filesystem;
  45
  46 using namespace zypp::repo;
  47
  48 ///////////////////////////////////////////////////////////////////
  49 namespace zypp
  50 { /////////////////////////////////////////////////////////////////
  51
  52   ///////////////////////////////////////////////////////////////////
  53   //
  54   //    CLASS NAME : RepoManagerOptions
  55   //
  56   ///////////////////////////////////////////////////////////////////
  57
  58   RepoManagerOptions::RepoManagerOptions()
  59   {
  60     repoCachePath    = ZConfig::instance().repoCachePath();
  61     repoRawCachePath = ZConfig::instance().repoMetadataPath();
  62     knownReposPath   = ZConfig::instance().knownReposPath();
  63   }
  64
  65   ////////////////////////////////////////////////////////////////////////////
  66
  67   /**
  68     * \short Simple callback to collect the results
  69     *
  70     * Classes like RepoFileParser call the callback
  71     * once per each repo in a file.
  72     *
  73     * Passing this functor as callback, you can collect
  74     * all resuls at the end, without dealing with async
  75     * code.
  76     */
  77     struct RepoCollector
  78     {
  79       RepoCollector()
  80       {
  81         MIL << endl;
  82       }
  83
  84       ~RepoCollector()
  85       {
  86         MIL << endl;
  87       }
  88
  89       bool collect( const RepoInfo &repo )
  90       {
  91         //MIL << "here in collector: " << repo.alias() << endl;
  92         repos.push_back(repo);
  93         //MIL << "added: " << repo.alias() << endl;
  94         return true;
  95       }
  96
  97       RepoInfoList repos;
  98     };
  99
 100   ////////////////////////////////////////////////////////////////////////////
 101
 102    /**
 103     * \short Internal version of clean cache
 104     *
 105     * Takes an extra CacheStore reference, so we avoid internally
 106     * having 2 CacheStores writing to the same database.
 107     */
 108   static void cleanCacheInternal( cache::CacheStore &store,
 109                                   const RepoInfo &info,
 110                                   const ProgressData::ReceiverFnc & progressrcv = ProgressData::ReceiverFnc() )
 111   {
 112     ProgressData progress;
 113     callback::SendReport<ProgressReport> report;
 114     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 115     progress.name(str::form(_("Cleaning repository '%s' cache"), info.name().c_str()));
 116
 117     if ( !store.isCached(info.alias()) )
 118       return;
 119
 120     MIL << info.alias() << " cleaning cache..." << endl;
 121     data::RecordId id = store.lookupRepository(info.alias());
 122
 123     CombinedProgressData subprogrcv(progress);
 124
 125     store.cleanRepository(id, subprogrcv);
 126   }
 127
 128   ////////////////////////////////////////////////////////////////////////////
 129
 130   /**
 131    * Reads RepoInfo's from a repo file.
 132    *
 133    * \param file pathname of the file to read.
 134    */
 135   static std::list<RepoInfo> repositories_in_file( const Pathname & file )
 136   {
 137     MIL << "repo file: " << file << endl;
 138     RepoCollector collector;
 139     parser::RepoFileReader parser( file, bind( &RepoCollector::collect, &collector, _1 ) );
 140     return collector.repos;
 141   }
 142
 143   ////////////////////////////////////////////////////////////////////////////
 144
 145   std::list<RepoInfo> readRepoFile(const Url & repo_file)
 146    {
 147      // no interface to download a specific file, using workaround:
 148      //! \todo add MediaManager::provideFile(Url file_url) to easily access any file URLs? (no need for media access id or media_nr)
 149      Url url(repo_file);
 150      Pathname path(url.getPathName());
 151      url.setPathName ("/");
 152      MediaSetAccess access(url);
 153      Pathname local = access.provideFile(path);
 154
 155      DBG << "reading repo file " << repo_file << ", local path: " << local << endl;
 156
 157      return repositories_in_file(local);
 158    }
 159
 160   ////////////////////////////////////////////////////////////////////////////
 161
 162   /**
 163    * \short List of RepoInfo's from a directory
 164    *
 165    * Goes trough every file in a directory and adds all
 166    * RepoInfo's contained in that file.
 167    *
 168    * \param dir pathname of the directory to read.
 169    */
 170   static std::list<RepoInfo> repositories_in_dir( const Pathname &dir )
 171   {
 172     MIL << "directory " << dir << endl;
 173     list<RepoInfo> repos;
 174     list<Pathname> entries;
 175     if ( filesystem::readdir( entries, Pathname(dir), false ) != 0 )
 176       ZYPP_THROW(Exception("failed to read directory"));
 177
 178     for ( list<Pathname>::const_iterator it = entries.begin(); it != entries.end(); ++it )
 179     {
 180       list<RepoInfo> tmp = repositories_in_file( *it );
 181       repos.insert( repos.end(), tmp.begin(), tmp.end() );
 182
 183       //std::copy( collector.repos.begin(), collector.repos.end(), std::back_inserter(repos));
 184       //MIL << "ok" << endl;
 185     }
 186     return repos;
 187   }
 188
 189   ////////////////////////////////////////////////////////////////////////////
 190
 191   static void assert_alias( const RepoInfo &info )
 192   {
 193     if (info.alias().empty())
 194         ZYPP_THROW(RepoNoAliasException());
 195   }
 196
 197   ////////////////////////////////////////////////////////////////////////////
 198
 199   static void assert_urls( const RepoInfo &info )
 200   {
 201     if (info.baseUrlsEmpty())
 202         ZYPP_THROW(RepoNoUrlException());
 203   }
 204
 205   ////////////////////////////////////////////////////////////////////////////
 206
 207   /**
 208    * \short Calculates the raw cache path for a repository
 209    */
 210   static Pathname rawcache_path_for_repoinfo( const RepoManagerOptions &opt, const RepoInfo &info )
 211   {
 212     assert_alias(info);
 213     return opt.repoRawCachePath + info.alias();
 214   }
 215
 216   ///////////////////////////////////////////////////////////////////
 217   //
 218   //    CLASS NAME : RepoManager::Impl
 219   //
 220   ///////////////////////////////////////////////////////////////////
 221
 222   /**
 223    * \short RepoManager implementation.
 224    */
 225   struct RepoManager::Impl
 226   {
 227     Impl( const RepoManagerOptions &opt )
 228       : options(opt)
 229     {
 230
 231     }
 232
 233     Impl()
 234     {
 235
 236     }
 237
 238     RepoManagerOptions options;
 239
 240   public:
 241     /** Offer default Impl. */
 242     static shared_ptr<Impl> nullimpl()
 243     {
 244       static shared_ptr<Impl> _nullimpl( new Impl );
 245       return _nullimpl;
 246     }
 247
 248   private:
 249     friend Impl * rwcowClone<Impl>( const Impl * rhs );
 250     /** clone for RWCOW_pointer */
 251     Impl * clone() const
 252     { return new Impl( *this ); }
 253   };
 254   ///////////////////////////////////////////////////////////////////
 255
 256   /** \relates RepoManager::Impl Stream output */
 257   inline std::ostream & operator<<( std::ostream & str, const RepoManager::Impl & obj )
 258   {
 259     return str << "RepoManager::Impl";
 260   }
 261
 262   ///////////////////////////////////////////////////////////////////
 263   //
 264   //    CLASS NAME : RepoManager
 265   //
 266   ///////////////////////////////////////////////////////////////////
 267
 268   RepoManager::RepoManager( const RepoManagerOptions &opt )
 269   : _pimpl( new Impl(opt) )
 270   {}
 271
 272   ////////////////////////////////////////////////////////////////////////////
 273
 274   RepoManager::~RepoManager()
 275   {}
 276
 277   ////////////////////////////////////////////////////////////////////////////
 278
 279   std::list<RepoInfo> RepoManager::knownRepositories() const
 280   {
 281     MIL << endl;
 282
 283     if ( PathInfo(_pimpl->options.knownReposPath).isExist() )
 284     {
 285       RepoInfoList repos = repositories_in_dir(_pimpl->options.knownReposPath);
 286       for ( RepoInfoList::iterator it = repos.begin();
 287             it != repos.end();
 288             ++it )
 289       {
 290         // set the metadata path for the repo
 291         Pathname metadata_path = rawcache_path_for_repoinfo(_pimpl->options, (*it));
 292         (*it).setMetadataPath(metadata_path);
 293       }
 294       return repos;
 295     }
 296     else
 297       return std::list<RepoInfo>();
 298
 299     MIL << endl;
 300   }
 301
 302   ////////////////////////////////////////////////////////////////////////////
 303
 304   RepoStatus RepoManager::metadataStatus( const RepoInfo &info ) const
 305   {
 306     Pathname rawpath = rawcache_path_for_repoinfo( _pimpl->options, info );
 307     RepoType repokind = info.type();
 308     RepoStatus status;
 309
 310     switch ( repokind.toEnum() )
 311     {
 312       case RepoType::NONE_e:
 313       // unknown, probe the local metadata
 314         repokind = probe(rawpath.asUrl());
 315       break;
 316       default:
 317       break;
 318     }
 319
 320     switch ( repokind.toEnum() )
 321     {
 322       case RepoType::RPMMD_e :
 323       {
 324         status = RepoStatus( rawpath + "/repodata/repomd.xml");
 325       }
 326       break;
 327
 328       case RepoType::YAST2_e :
 329       {
 330         status = RepoStatus( rawpath + "/content");
 331       }
 332       break;
 333
 334       case RepoType::RPMPLAINDIR_e :
 335       {
 336         if ( PathInfo(Pathname(rawpath + "/cookie")).isExist() )
 337           status = RepoStatus( rawpath + "/cookie");
 338       }
 339       break;
 340
 341       case RepoType::NONE_e :
 342         // Return default RepoStatus in case of RepoType::NONE
 343         // indicating it should be created?
 344         // ZYPP_THROW(RepoUnknownTypeException());
 345         break;
 346     }
 347     return status;
 348   }
 349
 350   void RepoManager::touchIndexFile(const RepoInfo & info)
 351   {
 352     Pathname rawpath = rawcache_path_for_repoinfo( _pimpl->options, info );
 353
 354     RepoType repokind = info.type();
 355     if ( repokind.toEnum() == RepoType::NONE_e )
 356       // unknown, probe the local metadata
 357       repokind = probe(rawpath.asUrl());
 358     // if still unknown, just return
 359     if (repokind == RepoType::NONE_e)
 360       return;
 361
 362     Pathname p;
 363     switch ( repokind.toEnum() )
 364     {
 365       case RepoType::RPMMD_e :
 366         p = Pathname(rawpath + "/repodata/repomd.xml");
 367         break;
 368
 369       case RepoType::YAST2_e :
 370         p = Pathname(rawpath + "/content");
 371         break;
 372
 373       case RepoType::RPMPLAINDIR_e :
 374         p = Pathname(rawpath + "/cookie");
 375         break;
 376
 377       case RepoType::NONE_e :
 378       default:
 379         break;
 380     }
 381
 382     // touch the file, ignore error (they are logged anyway)
 383     filesystem::touch(p);
 384   }
 385
 386   bool RepoManager::checkIfToRefreshMetadata( const RepoInfo &info,
 387                                               const Url &url,
 388                                               RawMetadataRefreshPolicy policy )
 389   {
 390     assert_alias(info);
 391
 392     RepoStatus oldstatus;
 393     RepoStatus newstatus;
 394
 395     try
 396     {
 397       MIL << "Going to try to check whether refresh is needed for " << url << endl;
 398
 399       repo::RepoType repokind = info.type();
 400
 401       // if the type is unknown, try probing.
 402       switch ( repokind.toEnum() )
 403       {
 404         case RepoType::NONE_e:
 405           // unknown, probe it
 406           repokind = probe(url);
 407         break;
 408         default:
 409         break;
 410       }
 411
 412       Pathname rawpath = rawcache_path_for_repoinfo( _pimpl->options, info );
 413       filesystem::assert_dir(rawpath);
 414       oldstatus = metadataStatus(info);
 415
 416       // now we've got the old (cached) status, we can decide repo.refresh.delay
 417       if (policy != RefreshForced)
 418       {
 419         // difference in seconds
 420         double diff = difftime(
 421           (Date::ValueType)Date::now(),
 422           (Date::ValueType)oldstatus.timestamp()) / 60;
 423
 424         DBG << "oldstatus: " << (Date::ValueType)oldstatus.timestamp() << endl;
 425         DBG << "current time: " << (Date::ValueType)Date::now() << endl;
 426         DBG << "last refresh = " << diff << " minutes ago" << endl;
 427
 428         if (diff < ZConfig::instance().repo_refresh_delay())
 429         {
 430           MIL << "Repository '" << info.alias()
 431               << "' has been refreshed less than repo.refresh.delay ("
 432               << ZConfig::instance().repo_refresh_delay()
 433               << ") minutes ago. Advising to skip refresh" << endl;
 434           return false;
 435         }
 436       }
 437
 438       // create temp dir as sibling of rawpath
 439       filesystem::TmpDir tmpdir( filesystem::TmpDir::makeSibling( rawpath ) );
 440
 441       if ( ( repokind.toEnum() == RepoType::RPMMD_e ) ||
 442            ( repokind.toEnum() == RepoType::YAST2_e ) )
 443       {
 444         MediaSetAccess media(url);
 445         shared_ptr<repo::Downloader> downloader_ptr;
 446
 447         if ( repokind.toEnum() == RepoType::RPMMD_e )
 448           downloader_ptr.reset(new yum::Downloader(info.path()));
 449         else
 450           downloader_ptr.reset( new susetags::Downloader(info.path()));
 451
 452         RepoStatus newstatus = downloader_ptr->status(media);
 453         bool refresh = false;
 454         if ( oldstatus.checksum() == newstatus.checksum() )
 455         {
 456           MIL << "repo has not changed" << endl;
 457           if ( policy == RefreshForced )
 458           {
 459             MIL << "refresh set to forced" << endl;
 460             refresh = true;
 461           }
 462         }
 463         else
 464         {
 465           MIL << "repo has changed, going to refresh" << endl;
 466           refresh = true;
 467         }
 468
 469         if (!refresh)
 470           touchIndexFile(info);
 471
 472         return refresh;
 473       }
 474       else if ( repokind.toEnum() == RepoType::RPMPLAINDIR_e )
 475       {
 476         RepoStatus newstatus = parser::plaindir::dirStatus(url.getPathName());
 477         bool refresh = false;
 478         if ( oldstatus.checksum() == newstatus.checksum() )
 479         {
 480           MIL << "repo has not changed" << endl;
 481           if ( policy == RefreshForced )
 482           {
 483             MIL << "refresh set to forced" << endl;
 484             refresh = true;
 485           }
 486         }
 487         else
 488         {
 489           MIL << "repo has changed, going to refresh" << endl;
 490           refresh = true;
 491         }
 492
 493         if (!refresh)
 494           touchIndexFile(info);
 495
 496         return refresh;
 497       }
 498       else
 499       {
 500         ZYPP_THROW(RepoUnknownTypeException());
 501       }
 502     }
 503     catch ( const Exception &e )
 504     {
 505       ZYPP_CAUGHT(e);
 506       ERR << "refresh check failed for " << url << endl;
 507       ZYPP_RETHROW(e);
 508     }
 509
 510     return true; // default
 511   }
 512
 513   void RepoManager::refreshMetadata( const RepoInfo &info,
 514                                      RawMetadataRefreshPolicy policy,
 515                                      const ProgressData::ReceiverFnc & progress )
 516   {
 517     assert_alias(info);
 518     assert_urls(info);
 519
 520     // try urls one by one
 521     for ( RepoInfo::urls_const_iterator it = info.baseUrlsBegin(); it != info.baseUrlsEnd(); ++it )
 522     {
 523       try
 524       {
 525         Url url(*it);
 526
 527         // check whether to refresh metadata
 528         // if the check fails for this url, it throws, so another url will be checked
 529         if (!checkIfToRefreshMetadata(info, url, policy))
 530           return;
 531
 532         MIL << "Going to refresh metadata from " << url << endl;
 533
 534         repo::RepoType repokind = info.type();
 535
 536         // if the type is unknown, try probing.
 537         switch ( repokind.toEnum() )
 538         {
 539           case RepoType::NONE_e:
 540             // unknown, probe it
 541             repokind = probe(*it);
 542           break;
 543           default:
 544           break;
 545         }
 546
 547         Pathname rawpath = rawcache_path_for_repoinfo( _pimpl->options, info );
 548         filesystem::assert_dir(rawpath);
 549
 550         // create temp dir as sibling of rawpath
 551         filesystem::TmpDir tmpdir( filesystem::TmpDir::makeSibling( rawpath ) );
 552
 553         if ( ( repokind.toEnum() == RepoType::RPMMD_e ) ||
 554              ( repokind.toEnum() == RepoType::YAST2_e ) )
 555         {
 556           MediaSetAccess media(url);
 557           shared_ptr<repo::Downloader> downloader_ptr;
 558
 559           if ( repokind.toEnum() == RepoType::RPMMD_e )
 560             downloader_ptr.reset(new yum::Downloader(info.path()));
 561           else
 562             downloader_ptr.reset( new susetags::Downloader(info.path()));
 563
 564           /**
 565            * Given a downloader, sets the other repos raw metadata
 566            * path as cache paths for the fetcher, so if another
 567            * repo has the same file, it will not download it
 568            * but copy it from the other repository
 569            */
 570           std::list<RepoInfo> repos = knownRepositories();
 571           for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 572                 it != repos.end();
 573                 ++it )
 574           {
 575             downloader_ptr->addCachePath(rawcache_path_for_repoinfo( _pimpl->options, *it ));
 576           }
 577
 578           downloader_ptr->download( media, tmpdir.path());
 579         }
 580         else if ( repokind.toEnum() == RepoType::RPMPLAINDIR_e )
 581         {
 582           RepoStatus newstatus = parser::plaindir::dirStatus(url.getPathName());
 583
 584           std::ofstream file(( tmpdir.path() + "/cookie").c_str());
 585           if (!file) {
 586             ZYPP_THROW (Exception( "Can't open " + tmpdir.path().asString() + "/cookie" ) );
 587           }
 588           file << url << endl;
 589           file << newstatus.checksum() << endl;
 590
 591           file.close();
 592         }
 593         else
 594         {
 595           ZYPP_THROW(RepoUnknownTypeException());
 596         }
 597
 598         // ok we have the metadata, now exchange
 599         // the contents
 600         TmpDir oldmetadata( TmpDir::makeSibling( rawpath ) );
 601         filesystem::rename( rawpath, oldmetadata.path() );
 602         // move the just downloaded there
 603         filesystem::rename( tmpdir.path(), rawpath );
 604         // we are done.
 605         return;
 606       }
 607       catch ( const Exception &e )
 608       {
 609         ZYPP_CAUGHT(e);
 610         ERR << "Trying another url..." << endl;
 611       }
 612     } // for every url
 613     ERR << "No more urls..." << endl;
 614     ZYPP_THROW(RepoException(_("Valid metadata not found at specified URL(s)")));
 615   }
 616
 617   ////////////////////////////////////////////////////////////////////////////
 618
 619   void RepoManager::cleanMetadata( const RepoInfo &info,
 620                                    const ProgressData::ReceiverFnc & progress )
 621   {
 622     filesystem::recursive_rmdir(rawcache_path_for_repoinfo(_pimpl->options, info));
 623   }
 624
 625   void RepoManager::buildCache( const RepoInfo &info,
 626                                 CacheBuildPolicy policy,
 627                                 const ProgressData::ReceiverFnc & progressrcv )
 628   {
 629     assert_alias(info);
 630     Pathname rawpath = rawcache_path_for_repoinfo(_pimpl->options, info);
 631
 632     cache::CacheStore store(_pimpl->options.repoCachePath);
 633
 634     RepoStatus raw_metadata_status = metadataStatus(info);
 635     if ( raw_metadata_status.empty() )
 636     {
 637       ZYPP_THROW(RepoMetadataException(info));
 638     }
 639
 640     bool needs_cleaning = false;
 641     if ( store.isCached( info.alias() ) )
 642     {
 643       MIL << info.alias() << " is already cached." << endl;
 644       data::RecordId id = store.lookupRepository(info.alias());
 645       RepoStatus cache_status = store.repositoryStatus(id);
 646
 647       if ( cache_status.checksum() == raw_metadata_status.checksum() )
 648       {
 649         MIL << info.alias() << " cache is up to date with metadata." << endl;
 650         if ( policy == BuildIfNeeded ) {
 651           return;
 652         }
 653         else {
 654           MIL << info.alias() << " cache rebuild is forced" << endl;
 655         }
 656       }
 657
 658       needs_cleaning = true;
 659     }
 660
 661     ProgressData progress(100);
 662     callback::SendReport<ProgressReport> report;
 663     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 664     progress.name(str::form(_("Building repository '%s' cache"), info.name().c_str()));
 665     progress.toMin();
 666
 667     if (needs_cleaning)
 668       cleanCacheInternal( store, info);
 669
 670     MIL << info.alias() << " building cache..." << endl;
 671     data::RecordId id = store.lookupOrAppendRepository(info.alias());
 672     // do we have type?
 673     repo::RepoType repokind = info.type();
 674
 675     // if the type is unknown, try probing.
 676     switch ( repokind.toEnum() )
 677     {
 678       case RepoType::NONE_e:
 679         // unknown, probe the local metadata
 680         repokind = probe(rawpath.asUrl());
 681       break;
 682       default:
 683       break;
 684     }
 685
 686
 687     switch ( repokind.toEnum() )
 688     {
 689       case RepoType::RPMMD_e :
 690       {
 691         CombinedProgressData subprogrcv( progress, 100);
 692         parser::yum::RepoParser parser(id, store, parser::yum::RepoParserOpts(), subprogrcv);
 693         parser.parse(rawpath);
 694           // no error
 695       }
 696       break;
 697       case RepoType::YAST2_e :
 698       {
 699         CombinedProgressData subprogrcv( progress, 100);
 700         parser::susetags::RepoParser parser(id, store, subprogrcv);
 701         parser.parse(rawpath);
 702         // no error
 703       }
 704       break;
 705       case RepoType::RPMPLAINDIR_e :
 706       {
 707         CombinedProgressData subprogrcv( progress, 100);
 708         InputStream is(rawpath + "cookie");
 709         string buffer;
 710         getline( is.stream(), buffer);
 711         Url url(buffer);
 712         parser::plaindir::RepoParser parser(id, store, subprogrcv);
 713         parser.parse(url.getPathName());
 714       }
 715       break;
 716       default:
 717         ZYPP_THROW(RepoUnknownTypeException());
 718     }
 719
 720     // update timestamp and checksum
 721     store.updateRepositoryStatus(id, raw_metadata_status);
 722
 723     MIL << "Commit cache.." << endl;
 724     store.commit();
 725     //progress.toMax();
 726   }
 727
 728   ////////////////////////////////////////////////////////////////////////////
 729
 730   repo::RepoType RepoManager::probe( const Url &url ) const
 731   {
 732     if ( url.getScheme() == "dir" && ! PathInfo( url.getPathName() ).isDir() )
 733     {
 734       // Handle non existing local directory in advance, as
 735       // MediaSetAccess does not support it.
 736       return repo::RepoType::NONE;
 737     }
 738
 739     try
 740     {
 741       MediaSetAccess access(url);
 742       if ( access.doesFileExist("/repodata/repomd.xml") )
 743         return repo::RepoType::RPMMD;
 744       if ( access.doesFileExist("/content") )
 745         return repo::RepoType::YAST2;
 746
 747       // if it is a local url of type dir
 748       if ( (! media::MediaManager::downloads(url)) && ( url.getScheme() == "dir" ) )
 749       {
 750         Pathname path = Pathname(url.getPathName());
 751         if ( PathInfo(path).isDir() )
 752         {
 753           // allow empty dirs for now
 754           return repo::RepoType::RPMPLAINDIR;
 755         }
 756       }
 757     }
 758     catch ( const media::MediaException &e )
 759     {
 760       ZYPP_CAUGHT(e);
 761       RepoException enew("Error trying to read from " + url.asString());
 762       enew.remember(e);
 763       ZYPP_THROW(enew);
 764     }
 765     catch ( const Exception &e )
 766     {
 767       ZYPP_CAUGHT(e);
 768       Exception enew("Unknown error reading from " + url.asString());
 769       enew.remember(e);
 770       ZYPP_THROW(enew);
 771     }
 772
 773     return repo::RepoType::NONE;
 774   }
 775
 776   ////////////////////////////////////////////////////////////////////////////
 777
 778   void RepoManager::cleanCache( const RepoInfo &info,
 779                                 const ProgressData::ReceiverFnc & progressrcv )
 780   {
 781     cache::CacheStore store(_pimpl->options.repoCachePath);
 782     cleanCacheInternal( store, info, progressrcv );
 783     store.commit();
 784   }
 785
 786   ////////////////////////////////////////////////////////////////////////////
 787
 788   bool RepoManager::isCached( const RepoInfo &info ) const
 789   {
 790     cache::CacheStore store(_pimpl->options.repoCachePath);
 791     return store.isCached(info.alias());
 792   }
 793
 794   RepoStatus RepoManager::cacheStatus( const RepoInfo &info ) const
 795   {
 796     cache::CacheStore store(_pimpl->options.repoCachePath);
 797     data::RecordId id = store.lookupRepository(info.alias());
 798     RepoStatus cache_status = store.repositoryStatus(id);
 799     return cache_status;
 800   }
 801
 802   Repository RepoManager::createFromCache( const RepoInfo &info,
 803                                            const ProgressData::ReceiverFnc & progressrcv )
 804   {
 805     callback::SendReport<ProgressReport> report;
 806     ProgressData progress;
 807     progress.sendTo(ProgressReportAdaptor( progressrcv, report ));
 808     //progress.sendTo( progressrcv );
 809     progress.name(str::form(_("Reading repository '%s' cache"), info.name().c_str()));
 810
 811     cache::CacheStore store(_pimpl->options.repoCachePath);
 812
 813     if ( ! store.isCached( info.alias() ) )
 814       ZYPP_THROW(RepoNotCachedException());
 815
 816     MIL << "Repository " << info.alias() << " is cached" << endl;
 817
 818     data::RecordId id = store.lookupRepository(info.alias());
 819
 820     CombinedProgressData subprogrcv(progress);
 821
 822     repo::cached::RepoOptions opts( info, _pimpl->options.repoCachePath, id );
 823     opts.readingResolvablesProgress = subprogrcv;
 824     repo::cached::RepoImpl::Ptr repoimpl =
 825         new repo::cached::RepoImpl( opts );
 826
 827     repoimpl->resolvables();
 828     // read the resolvables from cache
 829     return Repository(repoimpl);
 830   }
 831
 832   ////////////////////////////////////////////////////////////////////////////
 833
 834   /**
 835    * Generate a non existing filename in a directory, using a base
 836    * name. For example if a directory contains 3 files
 837    *
 838    * |-- bar
 839    * |-- foo
 840    * `-- moo
 841    *
 842    * If you try to generate a unique filename for this directory,
 843    * based on "ruu" you will get "ruu", but if you use the base
 844    * "foo" you will get "foo_1"
 845    *
 846    * \param dir Directory where the file needs to be unique
 847    * \param basefilename string to base the filename on.
 848    */
 849   static Pathname generate_non_existing_name( const Pathname &dir,
 850                                               const std::string &basefilename )
 851   {
 852     string final_filename = basefilename;
 853     int counter = 1;
 854     while ( PathInfo(dir + final_filename).isExist() )
 855     {
 856       final_filename = basefilename + "_" + str::numstring(counter);
 857       counter++;
 858     }
 859     return dir + Pathname(final_filename);
 860   }
 861
 862   ////////////////////////////////////////////////////////////////////////////
 863
 864   /**
 865    * \short Generate a related filename from a repo info
 866    *
 867    * From a repo info, it will try to use the alias as a filename
 868    * escaping it if necessary. Other fallbacks can be added to
 869    * this function in case there is no way to use the alias
 870    */
 871   static std::string generate_filename( const RepoInfo &info )
 872   {
 873     std::string fnd="/";
 874     std::string rep="_";
 875     std::string filename = info.alias();
 876     // replace slashes with underscores
 877     size_t pos = filename.find(fnd);
 878     while(pos!=string::npos)
 879     {
 880       filename.replace(pos,fnd.length(),rep);
 881       pos = filename.find(fnd,pos+rep.length());
 882     }
 883     filename = Pathname(filename).extend(".repo").asString();
 884     MIL << "generating filename for repo [" << info.alias() << "] : '" << filename << "'" << endl;
 885     return filename;
 886   }
 887
 888
 889   ////////////////////////////////////////////////////////////////////////////
 890
 891   void RepoManager::addRepository( const RepoInfo &info,
 892                                    const ProgressData::ReceiverFnc & progressrcv )
 893   {
 894     assert_alias(info);
 895
 896     ProgressData progress(100);
 897     callback::SendReport<ProgressReport> report;
 898     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 899     progress.name(str::form(_("Adding repository '%s'"), info.name().c_str()));
 900     progress.toMin();
 901
 902     std::list<RepoInfo> repos = knownRepositories();
 903     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 904           it != repos.end();
 905           ++it )
 906     {
 907       if ( info.alias() == (*it).alias() )
 908         ZYPP_THROW(RepoAlreadyExistsException(info.alias()));
 909     }
 910
 911     RepoInfo tosave = info;
 912
 913     // check the first url for now
 914     if ( ZConfig::instance().repo_add_probe() || ( tosave.type() == RepoType::NONE ) )
 915     {
 916       RepoType probedtype;
 917       probedtype = probe(*tosave.baseUrlsBegin());
 918       if ( tosave.baseUrlsSize() > 0 )
 919       {
 920         if ( probedtype == RepoType::NONE )
 921           ZYPP_THROW(RepoUnknownTypeException());
 922         else
 923           tosave.setType(probedtype);
 924       }
 925     }
 926
 927     progress.set(50);
 928
 929     // assert the directory exists
 930     filesystem::assert_dir(_pimpl->options.knownReposPath);
 931
 932     Pathname repofile = generate_non_existing_name(_pimpl->options.knownReposPath,
 933                                                     generate_filename(tosave));
 934     // now we have a filename that does not exists
 935     MIL << "Saving repo in " << repofile << endl;
 936
 937     std::ofstream file(repofile.c_str());
 938     if (!file) {
 939       ZYPP_THROW (Exception( "Can't open " + repofile.asString() ) );
 940     }
 941
 942     tosave.dumpRepoOn(file);
 943     progress.toMax();
 944     MIL << "done" << endl;
 945   }
 946
 947   void RepoManager::addRepositories( const Url &url,
 948                                      const ProgressData::ReceiverFnc & progressrcv )
 949   {
 950     std::list<RepoInfo> knownrepos = knownRepositories();
 951     std::list<RepoInfo> repos = readRepoFile(url);
 952     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 953           it != repos.end();
 954           ++it )
 955     {
 956       // look if the alias is in the known repos.
 957       for ( std::list<RepoInfo>::const_iterator kit = knownrepos.begin();
 958           kit != knownrepos.end();
 959           ++kit )
 960       {
 961         if ( (*it).alias() == (*kit).alias() )
 962         {
 963           ERR << "To be added repo " << (*it).alias() << " conflicts with existing repo " << (*kit).alias() << endl;
 964           ZYPP_THROW(RepoAlreadyExistsException((*it).alias()));
 965         }
 966       }
 967     }
 968
 969     string filename = Pathname(url.getPathName()).basename();
 970
 971     if ( filename == Pathname() )
 972       ZYPP_THROW(RepoException("Invalid repo file name at " + url.asString() ));
 973
 974     // assert the directory exists
 975     filesystem::assert_dir(_pimpl->options.knownReposPath);
 976
 977     Pathname repofile = generate_non_existing_name(_pimpl->options.knownReposPath, filename);
 978     // now we have a filename that does not exists
 979     MIL << "Saving " << repos.size() << " repo" << ( repos.size() ? "s" : "" ) << " in " << repofile << endl;
 980
 981     std::ofstream file(repofile.c_str());
 982     if (!file) {
 983       ZYPP_THROW (Exception( "Can't open " + repofile.asString() ) );
 984     }
 985
 986     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 987           it != repos.end();
 988           ++it )
 989     {
 990       MIL << "Saving " << (*it).alias() << endl;
 991       (*it).dumpRepoOn(file);
 992     }
 993     MIL << "done" << endl;
 994   }
 995
 996   ////////////////////////////////////////////////////////////////////////////
 997
 998   void RepoManager::removeRepository( const RepoInfo & info,
 999                                       const ProgressData::ReceiverFnc & progressrcv)
1000   {
1001     ProgressData progress;
1002     callback::SendReport<ProgressReport> report;
1003     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
1004     progress.name(str::form(_("Removing repository '%s'"), info.name().c_str()));
1005
1006     MIL << "Going to delete repo " << info.alias() << endl;
1007
1008     std::list<RepoInfo> repos = knownRepositories();
1009     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
1010           it != repos.end();
1011           ++it )
1012     {
1013       // they can be the same only if the provided is empty, that means
1014       // the provided repo has no alias
1015       // then skip
1016       if ( (!info.alias().empty()) && ( info.alias() != (*it).alias() ) )
1017         continue;
1018
1019       // TODO match by url
1020
1021       // we have a matcing repository, now we need to know
1022       // where it does come from.
1023       RepoInfo todelete = *it;
1024       if (todelete.filepath().empty())
1025       {
1026         ZYPP_THROW(RepoException("Can't figure where the repo is stored"));
1027       }
1028       else
1029       {
1030         // figure how many repos are there in the file:
1031         std::list<RepoInfo> filerepos = repositories_in_file(todelete.filepath());
1032         if ( (filerepos.size() == 1) && ( filerepos.front().alias() == todelete.alias() ) )
1033         {
1034           // easy, only this one, just delete the file
1035           if ( filesystem::unlink(todelete.filepath()) != 0 )
1036           {
1037             ZYPP_THROW(RepoException("Can't delete " + todelete.filepath().asString()));
1038           }
1039           MIL << todelete.alias() << " sucessfully deleted." << endl;
1040         }
1041         else
1042         {
1043           // there are more repos in the same file
1044           // write them back except the deleted one.
1045           //TmpFile tmp;
1046           //std::ofstream file(tmp.path().c_str());
1047
1048           // assert the directory exists
1049           filesystem::assert_dir(todelete.filepath().dirname());
1050
1051           std::ofstream file(todelete.filepath().c_str());
1052           if (!file) {
1053             //ZYPP_THROW (Exception( "Can't open " + tmp.path().asString() ) );
1054             ZYPP_THROW (Exception( "Can't open " + todelete.filepath().asString() ) );
1055           }
1056           for ( std::list<RepoInfo>::const_iterator fit = filerepos.begin();
1057                 fit != filerepos.end();
1058                 ++fit )
1059           {
1060             if ( (*fit).alias() != todelete.alias() )
1061               (*fit).dumpRepoOn(file);
1062           }
1063         }
1064
1065         CombinedProgressData subprogrcv(progress);
1066
1067         // now delete it from cache
1068         cleanCache( todelete, subprogrcv);
1069
1070         MIL << todelete.alias() << " sucessfully deleted." << endl;
1071         return;
1072       } // else filepath is empty
1073
1074     }
1075     // should not be reached on a sucess workflow
1076     ZYPP_THROW(RepoNotFoundException(info));
1077   }
1078
1079   ////////////////////////////////////////////////////////////////////////////
1080
1081   void RepoManager::modifyRepository( const std::string &alias,
1082                                       const RepoInfo & newinfo,
1083                                       const ProgressData::ReceiverFnc & progressrcv )
1084   {
1085     RepoInfo toedit = getRepositoryInfo(alias);
1086
1087     if (toedit.filepath().empty())
1088     {
1089       ZYPP_THROW(RepoException("Can't figure where the repo is stored"));
1090     }
1091     else
1092     {
1093       // figure how many repos are there in the file:
1094       std::list<RepoInfo> filerepos = repositories_in_file(toedit.filepath());
1095
1096       // there are more repos in the same file
1097       // write them back except the deleted one.
1098       //TmpFile tmp;
1099       //std::ofstream file(tmp.path().c_str());
1100
1101       // assert the directory exists
1102       filesystem::assert_dir(toedit.filepath().dirname());
1103
1104       std::ofstream file(toedit.filepath().c_str());
1105       if (!file) {
1106         //ZYPP_THROW (Exception( "Can't open " + tmp.path().asString() ) );
1107         ZYPP_THROW (Exception( "Can't open " + toedit.filepath().asString() ) );
1108       }
1109       for ( std::list<RepoInfo>::const_iterator fit = filerepos.begin();
1110             fit != filerepos.end();
1111             ++fit )
1112       {
1113           // if the alias is different, dump the original
1114           // if it is the same, dump the provided one
1115           if ( (*fit).alias() != toedit.alias() )
1116             (*fit).dumpRepoOn(file);
1117           else
1118             newinfo.dumpRepoOn(file);
1119       }
1120     }
1121   }
1122
1123   ////////////////////////////////////////////////////////////////////////////
1124
1125   RepoInfo RepoManager::getRepositoryInfo( const std::string &alias,
1126                                            const ProgressData::ReceiverFnc & progressrcv )
1127   {
1128     std::list<RepoInfo> repos = knownRepositories();
1129     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
1130           it != repos.end();
1131           ++it )
1132     {
1133       if ( (*it).alias() == alias )
1134         return *it;
1135     }
1136     RepoInfo info;
1137     info.setAlias(info.alias());
1138     ZYPP_THROW(RepoNotFoundException(info));
1139   }
1140
1141   ////////////////////////////////////////////////////////////////////////////
1142
1143   RepoInfo RepoManager::getRepositoryInfo( const Url & url,
1144                                            const url::ViewOption & urlview,
1145                                            const ProgressData::ReceiverFnc & progressrcv )
1146   {
1147     std::list<RepoInfo> repos = knownRepositories();
1148     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
1149           it != repos.end();
1150           ++it )
1151     {
1152       for(RepoInfo::urls_const_iterator urlit = (*it).baseUrlsBegin();
1153           urlit != (*it).baseUrlsEnd();
1154           ++urlit)
1155       {
1156         if ((*urlit).asString(urlview) == url.asString(urlview))
1157           return *it;
1158       }
1159     }
1160     RepoInfo info;
1161     info.setAlias(info.alias());
1162     info.setBaseUrl(url);
1163     ZYPP_THROW(RepoNotFoundException(info));
1164   }
1165
1166   ////////////////////////////////////////////////////////////////////////////
1167
1168   std::ostream & operator<<( std::ostream & str, const RepoManager & obj )
1169   {
1170     return str << *obj._pimpl;
1171   }
1172
1173   /////////////////////////////////////////////////////////////////
1174 } // namespace zypp
1175 ///////////////////////////////////////////////////////////////////