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.alias().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::refreshMetadata( const RepoInfo &info,
 351                                      RawMetadataRefreshPolicy policy,
 352                                      const ProgressData::ReceiverFnc & progress )
 353   {
 354     assert_alias(info);
 355     assert_urls(info);
 356
 357     RepoStatus oldstatus;
 358     RepoStatus newstatus;
 359     // try urls one by one
 360     for ( RepoInfo::urls_const_iterator it = info.baseUrlsBegin(); it != info.baseUrlsEnd(); ++it )
 361     {
 362       try
 363       {
 364         Url url(*it);
 365
 366         MIL << "Going to try to check and refresh metadata from " << url << endl;
 367
 368         repo::RepoType repokind = info.type();
 369
 370         // if the type is unknown, try probing.
 371         switch ( repokind.toEnum() )
 372         {
 373           case RepoType::NONE_e:
 374             // unknown, probe it
 375             repokind = probe(*it);
 376           break;
 377           default:
 378           break;
 379         }
 380
 381         Pathname rawpath = rawcache_path_for_repoinfo( _pimpl->options, info );
 382         filesystem::assert_dir(rawpath);
 383         oldstatus = metadataStatus(info);
 384
 385         // create temp dir as sibling of rawpath
 386         filesystem::TmpDir tmpdir( filesystem::TmpDir::makeSibling( rawpath ) );
 387
 388         if ( ( repokind.toEnum() == RepoType::RPMMD_e ) ||
 389              ( repokind.toEnum() == RepoType::YAST2_e ) )
 390         {
 391           MediaSetAccess media(url);
 392           shared_ptr<repo::Downloader> downloader_ptr;
 393
 394           if ( repokind.toEnum() == RepoType::RPMMD_e )
 395             downloader_ptr.reset(new yum::Downloader(info.path()));
 396           else
 397             downloader_ptr.reset( new susetags::Downloader(info.path()));
 398
 399           /**
 400            * Given a downloader, sets the other repos raw metadata
 401            * path as cache paths for the fetcher, so if another
 402            * repo has the same file, it will not download it
 403            * but copy it from the other repository
 404            */
 405           std::list<RepoInfo> repos = knownRepositories();
 406           for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 407                 it != repos.end();
 408                 ++it )
 409           {
 410             downloader_ptr->addCachePath(rawcache_path_for_repoinfo( _pimpl->options, *it ));
 411           }
 412
 413           RepoStatus newstatus = downloader_ptr->status(media);
 414           bool refresh = false;
 415           if ( oldstatus.checksum() == newstatus.checksum() )
 416           {
 417             MIL << "repo has not changed" << endl;
 418             if ( policy == RefreshForced )
 419             {
 420               MIL << "refresh set to forced" << endl;
 421               refresh = true;
 422             }
 423           }
 424           else
 425           {
 426             MIL << "repo has changed, going to refresh" << endl;
 427             refresh = true;
 428           }
 429           if ( refresh )
 430             downloader_ptr->download( media, tmpdir.path());
 431           else
 432             return;
 433           // no error
 434         }
 435         else if ( repokind.toEnum() == RepoType::RPMPLAINDIR_e )
 436         {
 437           RepoStatus newstatus = parser::plaindir::dirStatus(url.getPathName());
 438           bool refresh = false;
 439           if ( oldstatus.checksum() == newstatus.checksum() )
 440           {
 441             MIL << "repo has not changed" << endl;
 442             if ( policy == RefreshForced )
 443             {
 444               MIL << "refresh set to forced" << endl;
 445               refresh = true;
 446             }
 447           }
 448           else
 449           {
 450             MIL << "repo has changed, going to refresh" << endl;
 451             refresh = true;
 452           }
 453
 454           if ( refresh )
 455           {
 456             std::ofstream file(( tmpdir.path() + "/cookie").c_str());
 457             if (!file) {
 458               ZYPP_THROW (Exception( "Can't open " + tmpdir.path().asString() + "/cookie" ) );
 459             }
 460             file << url << endl;
 461             file << newstatus.checksum() << endl;
 462
 463             file.close();
 464           }
 465           else
 466             return;
 467           // no error
 468         }
 469         else
 470         {
 471           ZYPP_THROW(RepoUnknownTypeException());
 472         }
 473
 474         // ok we have the metadata, now exchange
 475         // the contents
 476         TmpDir oldmetadata( TmpDir::makeSibling( rawpath ) );
 477         filesystem::rename( rawpath, oldmetadata.path() );
 478         // move the just downloaded there
 479         filesystem::rename( tmpdir.path(), rawpath );
 480         // we are done.
 481         return;
 482       }
 483       catch ( const Exception &e )
 484       {
 485         ZYPP_CAUGHT(e);
 486         ERR << "Trying another url..." << endl;
 487       }
 488     } // for every url
 489     ERR << "No more urls..." << endl;
 490     ZYPP_THROW(RepoException(_("Valid metadata not found at specified URL(s)")));
 491   }
 492
 493   ////////////////////////////////////////////////////////////////////////////
 494
 495   void RepoManager::cleanMetadata( const RepoInfo &info,
 496                                    const ProgressData::ReceiverFnc & progress )
 497   {
 498     filesystem::recursive_rmdir(rawcache_path_for_repoinfo(_pimpl->options, info));
 499   }
 500
 501   void RepoManager::buildCache( const RepoInfo &info,
 502                                 CacheBuildPolicy policy,
 503                                 const ProgressData::ReceiverFnc & progressrcv )
 504   {
 505     ProgressData progress(100);
 506     callback::SendReport<ProgressReport> report;
 507     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 508     progress.name(str::form(_("Building repository '%s' cache"), info.alias().c_str()));
 509     progress.toMin();
 510
 511     assert_alias(info);
 512     Pathname rawpath = rawcache_path_for_repoinfo(_pimpl->options, info);
 513
 514     cache::CacheStore store(_pimpl->options.repoCachePath);
 515
 516     RepoStatus raw_metadata_status = metadataStatus(info);
 517     if ( raw_metadata_status.empty() )
 518     {
 519       ZYPP_THROW(RepoMetadataException(info));
 520     }
 521
 522     if ( store.isCached( info.alias() ) )
 523     {
 524       MIL << info.alias() << " is already cached." << endl;
 525       data::RecordId id = store.lookupRepository(info.alias());
 526       RepoStatus cache_status = store.repositoryStatus(id);
 527
 528       if ( cache_status.checksum() == raw_metadata_status.checksum() )
 529       {
 530         MIL << info.alias() << " cache is up to date with metadata." << endl;
 531         if ( policy == BuildIfNeeded ) {
 532           progress.toMax();
 533           return;
 534         }
 535         else {
 536           MIL << info.alias() << " cache rebuild is forced" << endl;
 537         }
 538       }
 539
 540       cleanCacheInternal( store, info);
 541     }
 542
 543     MIL << info.alias() << " building cache..." << endl;
 544     data::RecordId id = store.lookupOrAppendRepository(info.alias());
 545     // do we have type?
 546     repo::RepoType repokind = info.type();
 547
 548     // if the type is unknown, try probing.
 549     switch ( repokind.toEnum() )
 550     {
 551       case RepoType::NONE_e:
 552         // unknown, probe the local metadata
 553         repokind = probe(rawpath.asUrl());
 554       break;
 555       default:
 556       break;
 557     }
 558
 559     CombinedProgressData subprogrcv( progress, 100);
 560
 561     switch ( repokind.toEnum() )
 562     {
 563       case RepoType::RPMMD_e :
 564       {
 565         parser::yum::RepoParser parser(id, store, parser::yum::RepoParserOpts(), subprogrcv);
 566         parser.parse(rawpath);
 567           // no error
 568       }
 569       break;
 570       case RepoType::YAST2_e :
 571       {
 572         parser::susetags::RepoParser parser(id, store, subprogrcv);
 573         parser.parse(rawpath);
 574         // no error
 575       }
 576       break;
 577       case RepoType::RPMPLAINDIR_e :
 578       {
 579         InputStream is(rawpath + "cookie");
 580         string buffer;
 581         getline( is.stream(), buffer);
 582         Url url(buffer);
 583         parser::plaindir::RepoParser parser(id, store, subprogrcv);
 584         parser.parse(url.getPathName());
 585       }
 586       break;
 587       default:
 588         ZYPP_THROW(RepoUnknownTypeException());
 589     }
 590
 591     // update timestamp and checksum
 592     store.updateRepositoryStatus(id, raw_metadata_status);
 593
 594     MIL << "Commit cache.." << endl;
 595     store.commit();
 596     progress.toMax();
 597   }
 598
 599   ////////////////////////////////////////////////////////////////////////////
 600
 601   repo::RepoType RepoManager::probe( const Url &url ) const
 602   {
 603     if ( url.getScheme() == "dir" && ! PathInfo( url.getPathName() ).isDir() )
 604     {
 605       // Handle non existing local directory in advance, as
 606       // MediaSetAccess does not support it.
 607       return repo::RepoType::NONE;
 608     }
 609
 610     try
 611     {
 612       MediaSetAccess access(url);
 613       if ( access.doesFileExist("/repodata/repomd.xml") )
 614         return repo::RepoType::RPMMD;
 615       if ( access.doesFileExist("/content") )
 616         return repo::RepoType::YAST2;
 617
 618       // if it is a local url of type dir
 619       if ( (! media::MediaManager::downloads(url)) && ( url.getScheme() == "dir" ) )
 620       {
 621         Pathname path = Pathname(url.getPathName());
 622         if ( PathInfo(path).isDir() )
 623         {
 624           // allow empty dirs for now
 625           return repo::RepoType::RPMPLAINDIR;
 626         }
 627       }
 628     }
 629     catch ( const media::MediaException &e )
 630     {
 631       ZYPP_CAUGHT(e);
 632       RepoException enew("Error trying to read from " + url.asString());
 633       enew.remember(e);
 634       ZYPP_THROW(enew);
 635     }
 636     catch ( const Exception &e )
 637     {
 638       ZYPP_CAUGHT(e);
 639       Exception enew("Unknown error reading from " + url.asString());
 640       enew.remember(e);
 641       ZYPP_THROW(enew);
 642     }
 643
 644     return repo::RepoType::NONE;
 645   }
 646
 647   ////////////////////////////////////////////////////////////////////////////
 648
 649   void RepoManager::cleanCache( const RepoInfo &info,
 650                                 const ProgressData::ReceiverFnc & progressrcv )
 651   {
 652     cache::CacheStore store(_pimpl->options.repoCachePath);
 653     cleanCacheInternal( store, info, progressrcv );
 654     store.commit();
 655   }
 656
 657   ////////////////////////////////////////////////////////////////////////////
 658
 659   bool RepoManager::isCached( const RepoInfo &info ) const
 660   {
 661     cache::CacheStore store(_pimpl->options.repoCachePath);
 662     return store.isCached(info.alias());
 663   }
 664
 665   RepoStatus RepoManager::cacheStatus( const RepoInfo &info ) const
 666   {
 667     cache::CacheStore store(_pimpl->options.repoCachePath);
 668     data::RecordId id = store.lookupRepository(info.alias());
 669     RepoStatus cache_status = store.repositoryStatus(id);
 670     return cache_status;
 671   }
 672
 673   Repository RepoManager::createFromCache( const RepoInfo &info,
 674                                            const ProgressData::ReceiverFnc & progressrcv )
 675   {
 676     callback::SendReport<ProgressReport> report;
 677     ProgressData progress;
 678     progress.sendTo(ProgressReportAdaptor( progressrcv, report ));
 679     //progress.sendTo( progressrcv );
 680     progress.name(str::form(_("Reading repository '%s' cache"), info.alias().c_str()));
 681
 682     cache::CacheStore store(_pimpl->options.repoCachePath);
 683
 684     if ( ! store.isCached( info.alias() ) )
 685       ZYPP_THROW(RepoNotCachedException());
 686
 687     MIL << "Repository " << info.alias() << " is cached" << endl;
 688
 689     data::RecordId id = store.lookupRepository(info.alias());
 690
 691     CombinedProgressData subprogrcv(progress);
 692
 693     repo::cached::RepoOptions opts( info, _pimpl->options.repoCachePath, id );
 694     opts.readingResolvablesProgress = subprogrcv;
 695     repo::cached::RepoImpl::Ptr repoimpl =
 696         new repo::cached::RepoImpl( opts );
 697
 698     repoimpl->resolvables();
 699     // read the resolvables from cache
 700     return Repository(repoimpl);
 701   }
 702
 703   ////////////////////////////////////////////////////////////////////////////
 704
 705   /**
 706    * Generate a non existing filename in a directory, using a base
 707    * name. For example if a directory contains 3 files
 708    *
 709    * |-- bar
 710    * |-- foo
 711    * `-- moo
 712    *
 713    * If you try to generate a unique filename for this directory,
 714    * based on "ruu" you will get "ruu", but if you use the base
 715    * "foo" you will get "foo_1"
 716    *
 717    * \param dir Directory where the file needs to be unique
 718    * \param basefilename string to base the filename on.
 719    */
 720   static Pathname generate_non_existing_name( const Pathname &dir,
 721                                               const std::string &basefilename )
 722   {
 723     string final_filename = basefilename;
 724     int counter = 1;
 725     while ( PathInfo(dir + final_filename).isExist() )
 726     {
 727       final_filename = basefilename + "_" + str::numstring(counter);
 728       counter++;
 729     }
 730     return dir + Pathname(final_filename);
 731   }
 732
 733   ////////////////////////////////////////////////////////////////////////////
 734
 735   /**
 736    * \short Generate a related filename from a repo info
 737    *
 738    * From a repo info, it will try to use the alias as a filename
 739    * escaping it if necessary. Other fallbacks can be added to
 740    * this function in case there is no way to use the alias
 741    */
 742   static std::string generate_filename( const RepoInfo &info )
 743   {
 744     std::string fnd="/";
 745     std::string rep="_";
 746     std::string filename = info.alias();
 747     // replace slashes with underscores
 748     size_t pos = filename.find(fnd);
 749     while(pos!=string::npos)
 750     {
 751       filename.replace(pos,fnd.length(),rep);
 752       pos = filename.find(fnd,pos+rep.length());
 753     }
 754     filename = Pathname(filename).extend(".repo").asString();
 755     MIL << "generating filename for repo [" << info.alias() << "] : '" << filename << "'" << endl;
 756     return filename;
 757   }
 758
 759
 760   ////////////////////////////////////////////////////////////////////////////
 761
 762   void RepoManager::addRepository( const RepoInfo &info,
 763                                    const ProgressData::ReceiverFnc & progressrcv )
 764   {
 765     assert_alias(info);
 766
 767     ProgressData progress(100);
 768     callback::SendReport<ProgressReport> report;
 769     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 770     progress.name(str::form(_("Adding repository '%s'"), info.alias().c_str()));
 771     progress.toMin();
 772
 773     std::list<RepoInfo> repos = knownRepositories();
 774     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 775           it != repos.end();
 776           ++it )
 777     {
 778       if ( info.alias() == (*it).alias() )
 779         ZYPP_THROW(RepoAlreadyExistsException(info.alias()));
 780     }
 781
 782     RepoInfo tosave = info;
 783
 784     // check the first url for now
 785     if ( ZConfig::instance().repo_add_probe() || ( tosave.type() == RepoType::NONE ) )
 786     {
 787       RepoType probedtype;
 788       probedtype = probe(*tosave.baseUrlsBegin());
 789       if ( tosave.baseUrlsSize() > 0 )
 790       {
 791         if ( probedtype == RepoType::NONE )
 792           ZYPP_THROW(RepoUnknownTypeException());
 793         else
 794           tosave.setType(probedtype);
 795       }
 796     }
 797
 798     progress.set(50);
 799
 800     // assert the directory exists
 801     filesystem::assert_dir(_pimpl->options.knownReposPath);
 802
 803     Pathname repofile = generate_non_existing_name(_pimpl->options.knownReposPath,
 804                                                     generate_filename(tosave));
 805     // now we have a filename that does not exists
 806     MIL << "Saving repo in " << repofile << endl;
 807
 808     std::ofstream file(repofile.c_str());
 809     if (!file) {
 810       ZYPP_THROW (Exception( "Can't open " + repofile.asString() ) );
 811     }
 812
 813     tosave.dumpRepoOn(file);
 814     progress.toMax();
 815     MIL << "done" << endl;
 816   }
 817
 818   void RepoManager::addRepositories( const Url &url,
 819                                      const ProgressData::ReceiverFnc & progressrcv )
 820   {
 821     std::list<RepoInfo> knownrepos = knownRepositories();
 822     std::list<RepoInfo> repos = readRepoFile(url);
 823     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 824           it != repos.end();
 825           ++it )
 826     {
 827       // look if the alias is in the known repos.
 828       for ( std::list<RepoInfo>::const_iterator kit = knownrepos.begin();
 829           kit != knownrepos.end();
 830           ++kit )
 831       {
 832         if ( (*it).alias() == (*kit).alias() )
 833         {
 834           ERR << "To be added repo " << (*it).alias() << " conflicts with existing repo " << (*kit).alias() << endl;
 835           ZYPP_THROW(RepoAlreadyExistsException((*it).alias()));
 836         }
 837       }
 838     }
 839
 840     string filename = Pathname(url.getPathName()).basename();
 841
 842     if ( filename == Pathname() )
 843       ZYPP_THROW(RepoException("Invalid repo file name at " + url.asString() ));
 844
 845     // assert the directory exists
 846     filesystem::assert_dir(_pimpl->options.knownReposPath);
 847
 848     Pathname repofile = generate_non_existing_name(_pimpl->options.knownReposPath, filename);
 849     // now we have a filename that does not exists
 850     MIL << "Saving " << repos.size() << " repo" << ( repos.size() ? "s" : "" ) << " in " << repofile << endl;
 851
 852     std::ofstream file(repofile.c_str());
 853     if (!file) {
 854       ZYPP_THROW (Exception( "Can't open " + repofile.asString() ) );
 855     }
 856
 857     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 858           it != repos.end();
 859           ++it )
 860     {
 861       MIL << "Saving " << (*it).alias() << endl;
 862       (*it).dumpRepoOn(file);
 863     }
 864     MIL << "done" << endl;
 865   }
 866
 867   ////////////////////////////////////////////////////////////////////////////
 868
 869   void RepoManager::removeRepository( const RepoInfo & info,
 870                                       const ProgressData::ReceiverFnc & progressrcv)
 871   {
 872     ProgressData progress;
 873     callback::SendReport<ProgressReport> report;
 874     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 875     progress.name(str::form(_("Removing repository '%s'"), info.alias().c_str()));
 876
 877     MIL << "Going to delete repo " << info.alias() << endl;
 878
 879     std::list<RepoInfo> repos = knownRepositories();
 880     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 881           it != repos.end();
 882           ++it )
 883     {
 884       // they can be the same only if the provided is empty, that means
 885       // the provided repo has no alias
 886       // then skip
 887       if ( (!info.alias().empty()) && ( info.alias() != (*it).alias() ) )
 888         continue;
 889
 890       // TODO match by url
 891
 892       // we have a matcing repository, now we need to know
 893       // where it does come from.
 894       RepoInfo todelete = *it;
 895       if (todelete.filepath().empty())
 896       {
 897         ZYPP_THROW(RepoException("Can't figure where the repo is stored"));
 898       }
 899       else
 900       {
 901         // figure how many repos are there in the file:
 902         std::list<RepoInfo> filerepos = repositories_in_file(todelete.filepath());
 903         if ( (filerepos.size() == 1) && ( filerepos.front().alias() == todelete.alias() ) )
 904         {
 905           // easy, only this one, just delete the file
 906           if ( filesystem::unlink(todelete.filepath()) != 0 )
 907           {
 908             ZYPP_THROW(RepoException("Can't delete " + todelete.filepath().asString()));
 909           }
 910           MIL << todelete.alias() << " sucessfully deleted." << endl;
 911         }
 912         else
 913         {
 914           // there are more repos in the same file
 915           // write them back except the deleted one.
 916           //TmpFile tmp;
 917           //std::ofstream file(tmp.path().c_str());
 918
 919           // assert the directory exists
 920           filesystem::assert_dir(todelete.filepath().dirname());
 921
 922           std::ofstream file(todelete.filepath().c_str());
 923           if (!file) {
 924             //ZYPP_THROW (Exception( "Can't open " + tmp.path().asString() ) );
 925             ZYPP_THROW (Exception( "Can't open " + todelete.filepath().asString() ) );
 926           }
 927           for ( std::list<RepoInfo>::const_iterator fit = filerepos.begin();
 928                 fit != filerepos.end();
 929                 ++fit )
 930           {
 931             if ( (*fit).alias() != todelete.alias() )
 932               (*fit).dumpRepoOn(file);
 933           }
 934         }
 935
 936         CombinedProgressData subprogrcv(progress);
 937
 938         // now delete it from cache
 939         cleanCache( todelete, subprogrcv);
 940
 941         MIL << todelete.alias() << " sucessfully deleted." << endl;
 942         return;
 943       } // else filepath is empty
 944
 945     }
 946     // should not be reached on a sucess workflow
 947     ZYPP_THROW(RepoNotFoundException(info));
 948   }
 949
 950   ////////////////////////////////////////////////////////////////////////////
 951
 952   void RepoManager::modifyRepository( const std::string &alias,
 953                                       const RepoInfo & newinfo,
 954                                       const ProgressData::ReceiverFnc & progressrcv )
 955   {
 956     RepoInfo toedit = getRepositoryInfo(alias);
 957
 958     if (toedit.filepath().empty())
 959     {
 960       ZYPP_THROW(RepoException("Can't figure where the repo is stored"));
 961     }
 962     else
 963     {
 964       // figure how many repos are there in the file:
 965       std::list<RepoInfo> filerepos = repositories_in_file(toedit.filepath());
 966
 967       // there are more repos in the same file
 968       // write them back except the deleted one.
 969       //TmpFile tmp;
 970       //std::ofstream file(tmp.path().c_str());
 971
 972       // assert the directory exists
 973       filesystem::assert_dir(toedit.filepath().dirname());
 974
 975       std::ofstream file(toedit.filepath().c_str());
 976       if (!file) {
 977         //ZYPP_THROW (Exception( "Can't open " + tmp.path().asString() ) );
 978         ZYPP_THROW (Exception( "Can't open " + toedit.filepath().asString() ) );
 979       }
 980       for ( std::list<RepoInfo>::const_iterator fit = filerepos.begin();
 981             fit != filerepos.end();
 982             ++fit )
 983       {
 984           // if the alias is different, dump the original
 985           // if it is the same, dump the provided one
 986           if ( (*fit).alias() != toedit.alias() )
 987             (*fit).dumpRepoOn(file);
 988           else
 989             newinfo.dumpRepoOn(file);
 990       }
 991     }
 992   }
 993
 994   ////////////////////////////////////////////////////////////////////////////
 995
 996   RepoInfo RepoManager::getRepositoryInfo( const std::string &alias,
 997                                            const ProgressData::ReceiverFnc & progressrcv )
 998   {
 999     std::list<RepoInfo> repos = knownRepositories();
1000     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
1001           it != repos.end();
1002           ++it )
1003     {
1004       if ( (*it).alias() == alias )
1005         return *it;
1006     }
1007     RepoInfo info;
1008     info.setAlias(info.alias());
1009     ZYPP_THROW(RepoNotFoundException(info));
1010   }
1011
1012   ////////////////////////////////////////////////////////////////////////////
1013
1014   RepoInfo RepoManager::getRepositoryInfo( const Url & url,
1015                                            const url::ViewOption & urlview,
1016                                            const ProgressData::ReceiverFnc & progressrcv )
1017   {
1018     std::list<RepoInfo> repos = knownRepositories();
1019     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
1020           it != repos.end();
1021           ++it )
1022     {
1023       for(RepoInfo::urls_const_iterator urlit = (*it).baseUrlsBegin();
1024           urlit != (*it).baseUrlsEnd();
1025           ++urlit)
1026       {
1027         if ((*urlit).asString(urlview) == url.asString(urlview))
1028           return *it;
1029       }
1030     }
1031     RepoInfo info;
1032     info.setAlias(info.alias());
1033     info.setBaseUrl(url);
1034     ZYPP_THROW(RepoNotFoundException(info));
1035   }
1036
1037   ////////////////////////////////////////////////////////////////////////////
1038
1039   std::ostream & operator<<( std::ostream & str, const RepoManager & obj )
1040   {
1041     return str << *obj._pimpl;
1042   }
1043
1044   /////////////////////////////////////////////////////////////////
1045 } // namespace zypp
1046 ///////////////////////////////////////////////////////////////////