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     ZConfig globalConfig;
  61     repoCachePath = globalConfig.defaultRepoCachePath();
  62     repoRawCachePath = globalConfig.defaultRepoRawCachePath();
  63     knownReposPath = globalConfig.defaultKnownReposPath();
  64   }
  65
  66   ////////////////////////////////////////////////////////////////////////////
  67
  68   /**
  69     * \short Simple callback to collect the results
  70     *
  71     * Classes like RepoFileParser call the callback
  72     * once per each repo in a file.
  73     *
  74     * Passing this functor as callback, you can collect
  75     * all resuls at the end, without dealing with async
  76     * code.
  77     */
  78     struct RepoCollector
  79     {
  80       RepoCollector()
  81       {
  82         MIL << endl;
  83       }
  84
  85       ~RepoCollector()
  86       {
  87         MIL << endl;
  88       }
  89
  90       bool collect( const RepoInfo &repo )
  91       {
  92         //MIL << "here in collector: " << repo.alias() << endl;
  93         repos.push_back(repo);
  94         //MIL << "added: " << repo.alias() << endl;
  95         return true;
  96       }
  97
  98       RepoInfoList repos;
  99     };
 100
 101   ////////////////////////////////////////////////////////////////////////////
 102
 103   /**
 104    * Reads RepoInfo's from a repo file.
 105    *
 106    * \param file pathname of the file to read.
 107    */
 108   static std::list<RepoInfo> repositories_in_file( const Pathname & file )
 109   {
 110     MIL << "repo file: " << file << endl;
 111     RepoCollector collector;
 112     parser::RepoFileReader parser( file, bind( &RepoCollector::collect, &collector, _1 ) );
 113     return collector.repos;
 114   }
 115
 116   ////////////////////////////////////////////////////////////////////////////
 117
 118   std::list<RepoInfo> readRepoFile(const Url & repo_file)
 119    {
 120      // no interface to download a specific file, using workaround:
 121      //! \todo add MediaManager::provideFile(Url file_url) to easily access any file URLs? (no need for media access id or media_nr)
 122      Url url(repo_file);
 123      Pathname path(url.getPathName());
 124      url.setPathName ("/");
 125      MediaSetAccess access(url);
 126      Pathname local = access.provideFile(path);
 127
 128      DBG << "reading repo file " << repo_file << ", local path: " << local << endl;
 129
 130      return repositories_in_file(local);
 131    }
 132
 133   ////////////////////////////////////////////////////////////////////////////
 134
 135   /**
 136    * \short List of RepoInfo's from a directory
 137    *
 138    * Goes trough every file in a directory and adds all
 139    * RepoInfo's contained in that file.
 140    *
 141    * \param dir pathname of the directory to read.
 142    */
 143   static std::list<RepoInfo> repositories_in_dir( const Pathname &dir )
 144   {
 145     MIL << "directory " << dir << endl;
 146     list<RepoInfo> repos;
 147     list<Pathname> entries;
 148     if ( filesystem::readdir( entries, Pathname(dir), false ) != 0 )
 149       ZYPP_THROW(Exception("failed to read directory"));
 150
 151     for ( list<Pathname>::const_iterator it = entries.begin(); it != entries.end(); ++it )
 152     {
 153       list<RepoInfo> tmp = repositories_in_file( *it );
 154       repos.insert( repos.end(), tmp.begin(), tmp.end() );
 155
 156       //std::copy( collector.repos.begin(), collector.repos.end(), std::back_inserter(repos));
 157       //MIL << "ok" << endl;
 158     }
 159     return repos;
 160   }
 161
 162   ////////////////////////////////////////////////////////////////////////////
 163
 164   static void assert_alias( const RepoInfo &info )
 165   {
 166     if (info.alias().empty())
 167         ZYPP_THROW(RepoNoAliasException());
 168   }
 169
 170   ////////////////////////////////////////////////////////////////////////////
 171
 172   static void assert_urls( const RepoInfo &info )
 173   {
 174     if (info.baseUrls().empty())
 175         ZYPP_THROW(RepoNoUrlException());
 176   }
 177
 178   ////////////////////////////////////////////////////////////////////////////
 179
 180   /**
 181    * \short Calculates the raw cache path for a repository
 182    */
 183   static Pathname rawcache_path_for_repoinfo( const RepoManagerOptions &opt, const RepoInfo &info )
 184   {
 185     assert_alias(info);
 186     return opt.repoRawCachePath + info.alias();
 187   }
 188
 189   ///////////////////////////////////////////////////////////////////
 190   //
 191   //    CLASS NAME : RepoManager::Impl
 192   //
 193   ///////////////////////////////////////////////////////////////////
 194
 195   /**
 196    * \short RepoManager implementation.
 197    */
 198   struct RepoManager::Impl
 199   {
 200     Impl( const RepoManagerOptions &opt )
 201       : options(opt)
 202     {
 203
 204     }
 205
 206     Impl()
 207     {
 208
 209     }
 210
 211     RepoManagerOptions options;
 212
 213   public:
 214     /** Offer default Impl. */
 215     static shared_ptr<Impl> nullimpl()
 216     {
 217       static shared_ptr<Impl> _nullimpl( new Impl );
 218       return _nullimpl;
 219     }
 220
 221   private:
 222     friend Impl * rwcowClone<Impl>( const Impl * rhs );
 223     /** clone for RWCOW_pointer */
 224     Impl * clone() const
 225     { return new Impl( *this ); }
 226   };
 227   ///////////////////////////////////////////////////////////////////
 228
 229   /** \relates RepoManager::Impl Stream output */
 230   inline std::ostream & operator<<( std::ostream & str, const RepoManager::Impl & obj )
 231   {
 232     return str << "RepoManager::Impl";
 233   }
 234
 235   ///////////////////////////////////////////////////////////////////
 236   //
 237   //    CLASS NAME : RepoManager
 238   //
 239   ///////////////////////////////////////////////////////////////////
 240
 241   RepoManager::RepoManager( const RepoManagerOptions &opt )
 242   : _pimpl( new Impl(opt) )
 243   {}
 244
 245   ////////////////////////////////////////////////////////////////////////////
 246
 247   RepoManager::~RepoManager()
 248   {}
 249
 250   ////////////////////////////////////////////////////////////////////////////
 251
 252   std::list<RepoInfo> RepoManager::knownRepositories() const
 253   {
 254     MIL << endl;
 255
 256     if ( PathInfo(_pimpl->options.knownReposPath).isExist() )
 257       return repositories_in_dir(_pimpl->options.knownReposPath);
 258     else
 259       return std::list<RepoInfo>();
 260
 261     MIL << endl;
 262   }
 263
 264   ////////////////////////////////////////////////////////////////////////////
 265
 266   RepoStatus RepoManager::rawMetadataStatus( const RepoInfo &info )
 267   {
 268     Pathname rawpath = rawcache_path_for_repoinfo( _pimpl->options, info );
 269     RepoType repokind = info.type();
 270     RepoStatus status;
 271
 272     switch ( repokind.toEnum() )
 273     {
 274       case RepoType::NONE_e:
 275       // unknown, probe the local metadata
 276         repokind = probe(rawpath.asUrl());
 277       break;
 278       default:
 279       break;
 280     }
 281
 282     switch ( repokind.toEnum() )
 283     {
 284       case RepoType::RPMMD_e :
 285       {
 286         status = RepoStatus( rawpath + "/repodata/repomd.xml");
 287       }
 288       break;
 289
 290       case RepoType::YAST2_e :
 291       {
 292         status = RepoStatus( rawpath + "/content");
 293       }
 294       break;
 295
 296       case RepoType::RPMPLAINDIR_e :
 297       {
 298         if ( PathInfo(Pathname(rawpath + "/cookie")).isExist() )
 299           status = RepoStatus( rawpath + "/cookie");
 300       }
 301       break;
 302
 303       case RepoType::NONE_e :
 304         // Return default RepoStatus in case of RepoType::NONE
 305         // indicating it should be created?
 306         // ZYPP_THROW(RepoUnknownTypeException());
 307         break;
 308     }
 309     return status;
 310   }
 311
 312
 313   void RepoManager::refreshMetadata( const RepoInfo &info,
 314                                      RawMetadataRefreshPolicy policy,
 315                                      const ProgressData::ReceiverFnc & progress )
 316   {
 317     assert_alias(info);
 318     assert_urls(info);
 319
 320     RepoStatus oldstatus;
 321     RepoStatus newstatus;
 322     // try urls one by one
 323     for ( RepoInfo::urls_const_iterator it = info.baseUrlsBegin(); it != info.baseUrlsEnd(); ++it )
 324     {
 325       try
 326       {
 327         Url url(*it);
 328         filesystem::TmpDir tmpdir;
 329
 330         repo::RepoType repokind = info.type();
 331
 332         // if the type is unknown, try probing.
 333         switch ( repokind.toEnum() )
 334         {
 335           case RepoType::NONE_e:
 336             // unknown, probe it
 337             repokind = probe(*it);
 338           break;
 339           default:
 340           break;
 341         }
 342
 343         Pathname rawpath = rawcache_path_for_repoinfo( _pimpl->options, info );
 344         oldstatus = rawMetadataStatus(info);
 345
 346         switch ( repokind.toEnum() )
 347         {
 348           case RepoType::RPMMD_e :
 349           {
 350             yum::Downloader downloader( url, "/" );
 351
 352             RepoStatus newstatus = downloader.status();
 353             bool refresh = false;
 354             if ( oldstatus.checksum() == newstatus.checksum() )
 355             {
 356               MIL << "repo has not changed" << endl;
 357               if ( policy == RefreshForced )
 358               {
 359                 MIL << "refresh set to forced" << endl;
 360                 refresh = true;
 361               }
 362             }
 363             else
 364             {
 365               refresh = true;
 366             }
 367
 368             if ( refresh )
 369               downloader.download(tmpdir.path());
 370             else
 371               return;
 372             // no error
 373           }
 374           break;
 375           case RepoType::YAST2_e :
 376           {
 377             susetags::Downloader downloader( url, "/" );
 378
 379             RepoStatus newstatus = downloader.status();
 380             bool refresh = false;
 381             if ( oldstatus.checksum() == newstatus.checksum() )
 382             {
 383               MIL << "repo has not changed" << endl;
 384               if ( policy == RefreshForced )
 385               {
 386                 MIL << "refresh set to forced" << endl;
 387                 refresh = true;
 388               }
 389             }
 390             else
 391             {
 392               refresh = true;
 393             }
 394
 395             if ( refresh )
 396               downloader.download(tmpdir.path());
 397             else
 398               return;
 399             // no error
 400           }
 401           break;
 402
 403           case RepoType::RPMPLAINDIR_e :
 404           {
 405             RepoStatus newstatus = parser::plaindir::dirStatus(url.getPathName());
 406             bool refresh = false;
 407             if ( oldstatus.checksum() == newstatus.checksum() )
 408             {
 409               MIL << "repo has not changed" << endl;
 410               if ( policy == RefreshForced )
 411               {
 412                 MIL << "refresh set to forced" << endl;
 413                 refresh = true;
 414               }
 415             }
 416             else
 417             {
 418               refresh = true;
 419             }
 420
 421             if ( refresh )
 422             {
 423               std::ofstream file(( tmpdir.path() + "/cookie").c_str());
 424               if (!file) {
 425                 ZYPP_THROW (Exception( "Can't open " + tmpdir.path().asString() + "/cookie" ) );
 426               }
 427               file << url << endl;
 428               file << newstatus.checksum() << endl;
 429
 430               file.close();
 431             }
 432             else
 433               return;
 434             // no error
 435           }
 436           break;
 437           default:
 438             ZYPP_THROW(RepoUnknownTypeException());
 439         }
 440
 441         // ok we have the metadata, now exchange
 442         // the contents
 443         TmpDir oldmetadata;
 444         filesystem::assert_dir(rawpath);
 445         filesystem::rename( rawpath, oldmetadata.path() );
 446         // move the just downloaded there
 447         filesystem::rename( tmpdir.path(), rawpath );
 448         // we are done.
 449         return;
 450       }
 451       catch ( const Exception &e )
 452       {
 453         ZYPP_CAUGHT(e);
 454         ERR << "Trying another url..." << endl;
 455       }
 456     } // for every url
 457     ERR << "No more urls..." << endl;
 458     ZYPP_THROW(RepoException("Cant refresh metadata"));
 459   }
 460
 461   ////////////////////////////////////////////////////////////////////////////
 462
 463   void RepoManager::cleanMetadata( const RepoInfo &info,
 464                                    const ProgressData::ReceiverFnc & progress )
 465   {
 466     filesystem::recursive_rmdir(rawcache_path_for_repoinfo(_pimpl->options, info));
 467   }
 468
 469   void RepoManager::buildCache( const RepoInfo &info,
 470                                 CacheBuildPolicy policy,
 471                                 const ProgressData::ReceiverFnc & progressrcv )
 472   {
 473     ProgressData progress(100);
 474     callback::SendReport<ProgressReport> report;
 475     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 476     progress.name(str::form(_("Building repository '%s' cache"), info.alias().c_str()));
 477     progress.toMin();
 478
 479     assert_alias(info);
 480     Pathname rawpath = rawcache_path_for_repoinfo(_pimpl->options, info);
 481
 482     cache::CacheStore store(_pimpl->options.repoCachePath);
 483
 484     RepoStatus raw_metadata_status = rawMetadataStatus(info);
 485     if ( store.isCached( info.alias() ) )
 486     {
 487       MIL << info.alias() << " is already cached." << endl;
 488       data::RecordId id = store.lookupRepository(info.alias());
 489       RepoStatus cache_status = store.repositoryStatus(id);
 490
 491       if ( cache_status.checksum() == raw_metadata_status.checksum() )
 492       {
 493         MIL << info.alias() << " cache is up to date with metadata." << endl;
 494         if ( policy == BuildIfNeeded ) {
 495           progress.toMax();
 496           return;
 497         }
 498         else {
 499           MIL << info.alias() << " cache rebuild is forced" << endl;
 500         }
 501       }
 502       MIL << info.alias() << " cleaning cache..." << endl;
 503       store.cleanRepository(id);
 504     }
 505
 506     MIL << info.alias() << " building cache..." << endl;
 507     data::RecordId id = store.lookupOrAppendRepository(info.alias());
 508     // do we have type?
 509     repo::RepoType repokind = info.type();
 510
 511     // if the type is unknown, try probing.
 512     switch ( repokind.toEnum() )
 513     {
 514       case RepoType::NONE_e:
 515         // unknown, probe the local metadata
 516         repokind = probe(rawpath.asUrl());
 517       break;
 518       default:
 519       break;
 520     }
 521
 522     CombinedProgressData subprogrcv( progress, 100);
 523
 524     switch ( repokind.toEnum() )
 525     {
 526       case RepoType::RPMMD_e :
 527       {
 528         parser::yum::RepoParser parser(id, store, parser::yum::RepoParserOpts(), subprogrcv);
 529         parser.parse(rawpath);
 530           // no error
 531       }
 532       break;
 533       case RepoType::YAST2_e :
 534       {
 535         parser::susetags::RepoParser parser(id, store, subprogrcv);
 536         parser.parse(rawpath);
 537         // no error
 538       }
 539       break;
 540       case RepoType::RPMPLAINDIR_e :
 541       {
 542         InputStream is(rawpath + "cookie");
 543         string buffer;
 544         getline( is.stream(), buffer);
 545         Url url(buffer);
 546         parser::plaindir::RepoParser parser(id, store, subprogrcv);
 547         parser.parse(url.getPathName());
 548       }
 549       break;
 550       default:
 551         ZYPP_THROW(RepoUnknownTypeException());
 552     }
 553
 554     // update timestamp and checksum
 555     store.updateRepositoryStatus(id, raw_metadata_status);
 556
 557     MIL << "Commit cache.." << endl;
 558     store.commit();
 559     progress.toMax();
 560   }
 561
 562   ////////////////////////////////////////////////////////////////////////////
 563
 564   repo::RepoType RepoManager::probe( const Url &url )
 565   {
 566     if ( url.getScheme() == "dir" && ! PathInfo( url.getPathName() ).isDir() )
 567     {
 568       // Handle non existing local directory in advance, as
 569       // MediaSetAccess does not support it.
 570       return repo::RepoType::NONE;
 571     }
 572
 573     MediaSetAccess access(url);
 574     if ( access.doesFileExist("/repodata/repomd.xml") )
 575       return repo::RepoType::RPMMD;
 576     if ( access.doesFileExist("/content") )
 577       return repo::RepoType::YAST2;
 578
 579     // if it is a local url of type dir
 580     if ( (! media::MediaManager::downloads(url)) && ( url.getScheme() == "dir" ) )
 581     {
 582       Pathname path = Pathname(url.getPathName());
 583       if ( PathInfo(path).isDir() )
 584       {
 585         // allow empty dirs for now
 586         return repo::RepoType::RPMPLAINDIR;
 587       }
 588     }
 589
 590     return repo::RepoType::NONE;
 591   }
 592
 593   ////////////////////////////////////////////////////////////////////////////
 594
 595   void RepoManager::cleanCache( const RepoInfo &info,
 596                                 const ProgressData::ReceiverFnc & progressrcv )
 597   {
 598     ProgressData progress(100);
 599     callback::SendReport<ProgressReport> report;
 600     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 601     progress.name(str::form(_("Cleaning repository '%s' cache"), info.alias().c_str()));
 602     progress.toMin();
 603
 604     cache::CacheStore store(_pimpl->options.repoCachePath);
 605
 606     data::RecordId id = store.lookupRepository(info.alias());
 607     store.cleanRepository(id);
 608     store.commit();
 609   }
 610
 611   ////////////////////////////////////////////////////////////////////////////
 612
 613   bool RepoManager::isCached( const RepoInfo &info ) const
 614   {
 615     cache::CacheStore store(_pimpl->options.repoCachePath);
 616     return store.isCached(info.alias());
 617   }
 618
 619   Repository RepoManager::createFromCache( const RepoInfo &info,
 620                                            const ProgressData::ReceiverFnc & progressrcv )
 621   {
 622     callback::SendReport<ProgressReport> report;
 623     ProgressData progress;
 624     progress.sendTo(ProgressReportAdaptor( progressrcv, report ));
 625     progress.sendTo( progressrcv );
 626     progress.name(str::form(_("Reading repository '%s' cache"), info.alias().c_str()));
 627     progress.toMin();
 628
 629     cache::CacheStore store(_pimpl->options.repoCachePath);
 630
 631     if ( ! store.isCached( info.alias() ) )
 632       ZYPP_THROW(RepoNotCachedException());
 633
 634     MIL << "Repository " << info.alias() << " is cached" << endl;
 635
 636     data::RecordId id = store.lookupRepository(info.alias());
 637
 638     repo::cached::RepoOptions opts( info, _pimpl->options.repoCachePath, id );
 639     opts.readingResolvablesProgress = progressrcv;
 640     repo::cached::RepoImpl::Ptr repoimpl =
 641         new repo::cached::RepoImpl( opts );
 642
 643     repoimpl->resolvables();
 644     // read the resolvables from cache
 645     return Repository(repoimpl);
 646   }
 647
 648   ////////////////////////////////////////////////////////////////////////////
 649
 650   /**
 651    * Generate a non existing filename in a directory, using a base
 652    * name. For example if a directory contains 3 files
 653    *
 654    * |-- bar
 655    * |-- foo
 656    * `-- moo
 657    *
 658    * If you try to generate a unique filename for this directory,
 659    * based on "ruu" you will get "ruu", but if you use the base
 660    * "foo" you will get "foo_1"
 661    *
 662    * \param dir Directory where the file needs to be unique
 663    * \param basefilename string to base the filename on.
 664    */
 665   static Pathname generate_non_existing_name( const Pathname &dir,
 666                                               const std::string &basefilename )
 667   {
 668     string final_filename = basefilename;
 669     int counter = 1;
 670     while ( PathInfo(dir + final_filename).isExist() )
 671     {
 672       final_filename = basefilename + "_" + str::numstring(counter);
 673       counter++;
 674     }
 675     return dir + Pathname(final_filename);
 676   }
 677
 678   ////////////////////////////////////////////////////////////////////////////
 679
 680   void RepoManager::addRepository( const RepoInfo &info,
 681                                    const ProgressData::ReceiverFnc & progressrcv )
 682   {
 683     assert_alias(info);
 684
 685     ProgressData progress(100);
 686     callback::SendReport<ProgressReport> report;
 687     progress.sendTo( ProgressReportAdaptor( progressrcv, report ) );
 688     progress.name(str::form(_("Adding repository '%s'"), info.alias().c_str()));
 689     progress.toMin();
 690
 691     std::list<RepoInfo> repos = knownRepositories();
 692     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 693           it != repos.end();
 694           ++it )
 695     {
 696       if ( info.alias() == (*it).alias() )
 697         ZYPP_THROW(RepoAlreadyExistsException(info.alias()));
 698     }
 699
 700     progress.set(50);
 701
 702     // assert the directory exists
 703     filesystem::assert_dir(_pimpl->options.knownReposPath);
 704
 705     Pathname repofile = generate_non_existing_name(_pimpl->options.knownReposPath,
 706                                                     Pathname(info.alias()).extend(".repo").asString());
 707     // now we have a filename that does not exists
 708     MIL << "Saving repo in " << repofile << endl;
 709
 710     std::ofstream file(repofile.c_str());
 711     if (!file) {
 712       ZYPP_THROW (Exception( "Can't open " + repofile.asString() ) );
 713     }
 714
 715     info.dumpRepoOn(file);
 716     progress.toMax();
 717     MIL << "done" << endl;
 718   }
 719
 720   void RepoManager::addRepositories( const Url &url,
 721                                      const ProgressData::ReceiverFnc & progressrcv )
 722   {
 723     std::list<RepoInfo> knownrepos = knownRepositories();
 724     std::list<RepoInfo> repos = readRepoFile(url);
 725     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 726           it != repos.end();
 727           ++it )
 728     {
 729       // look if the alias is in the known repos.
 730       for ( std::list<RepoInfo>::const_iterator kit = knownrepos.begin();
 731           kit != knownrepos.end();
 732           ++kit )
 733       {
 734         if ( (*it).alias() == (*kit).alias() )
 735         {
 736           ERR << "To be added repo " << (*it).alias() << " conflicts with existing repo " << (*kit).alias() << endl;
 737           ZYPP_THROW(RepoAlreadyExistsException((*it).alias()));
 738         }
 739       }
 740     }
 741
 742     string filename = Pathname(url.getPathName()).basename();
 743
 744     if ( filename == Pathname() )
 745       ZYPP_THROW(RepoException("Invalid repo file name at " + url.asString() ));
 746
 747     // assert the directory exists
 748     filesystem::assert_dir(_pimpl->options.knownReposPath);
 749
 750     Pathname repofile = generate_non_existing_name(_pimpl->options.knownReposPath, filename);
 751     // now we have a filename that does not exists
 752     MIL << "Saving " << repos.size() << " repo" << ( repos.size() ? "s" : "" ) << " in " << repofile << endl;
 753
 754     std::ofstream file(repofile.c_str());
 755     if (!file) {
 756       ZYPP_THROW (Exception( "Can't open " + repofile.asString() ) );
 757     }
 758
 759     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 760           it != repos.end();
 761           ++it )
 762     {
 763       MIL << "Saving " << (*it).alias() << endl;
 764       (*it).dumpRepoOn(file);
 765     }
 766     MIL << "done" << endl;
 767   }
 768
 769   ////////////////////////////////////////////////////////////////////////////
 770
 771   void RepoManager::removeRepository( const RepoInfo & info,
 772                                       const ProgressData::ReceiverFnc & progressrcv)
 773   {
 774     MIL << "Going to delete repo " << info.alias() << endl;
 775
 776     std::list<RepoInfo> repos = knownRepositories();
 777     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 778           it != repos.end();
 779           ++it )
 780     {
 781       // they can be the same only if the provided is empty, that means
 782       // the provided repo has no alias
 783       // then skip
 784       if ( (!info.alias().empty()) && ( info.alias() != (*it).alias() ) )
 785         continue;
 786
 787       // TODO match by url
 788
 789       // we have a matcing repository, now we need to know
 790       // where it does come from.
 791       RepoInfo todelete = *it;
 792       if (todelete.filepath().empty())
 793       {
 794         ZYPP_THROW(RepoException("Can't figure where the repo is stored"));
 795       }
 796       else
 797       {
 798         // figure how many repos are there in the file:
 799         std::list<RepoInfo> filerepos = repositories_in_file(todelete.filepath());
 800         if ( (filerepos.size() == 1) && ( filerepos.front().alias() == todelete.alias() ) )
 801         {
 802           // easy, only this one, just delete the file
 803           if ( filesystem::unlink(todelete.filepath()) != 0 )
 804           {
 805             ZYPP_THROW(RepoException("Can't delete " + todelete.filepath().asString()));
 806           }
 807           MIL << todelete.alias() << " sucessfully deleted." << endl;
 808           return;
 809         }
 810         else
 811         {
 812           // there are more repos in the same file
 813           // write them back except the deleted one.
 814           //TmpFile tmp;
 815           //std::ofstream file(tmp.path().c_str());
 816
 817           // assert the directory exists
 818           filesystem::assert_dir(todelete.filepath().dirname());
 819
 820           std::ofstream file(todelete.filepath().c_str());
 821           if (!file) {
 822             //ZYPP_THROW (Exception( "Can't open " + tmp.path().asString() ) );
 823             ZYPP_THROW (Exception( "Can't open " + todelete.filepath().asString() ) );
 824           }
 825           for ( std::list<RepoInfo>::const_iterator fit = filerepos.begin();
 826                 fit != filerepos.end();
 827                 ++fit )
 828           {
 829             if ( (*fit).alias() != todelete.alias() )
 830               (*fit).dumpRepoOn(file);
 831           }
 832
 833           cache::CacheStore store(_pimpl->options.repoCachePath);
 834
 835           if ( store.isCached( todelete.alias() ) ) {
 836             MIL << "repository was cached. cleaning cache" << endl;
 837             store.cleanRepository(todelete.alias());
 838           }
 839
 840           MIL << todelete.alias() << " sucessfully deleted." << endl;
 841           return;
 842         }
 843       } // else filepath is empty
 844
 845     }
 846     // should not be reached on a sucess workflow
 847     ZYPP_THROW(RepoNotFoundException(info));
 848   }
 849
 850   ////////////////////////////////////////////////////////////////////////////
 851
 852   void RepoManager::modifyRepository( const std::string &alias,
 853                                       const RepoInfo & newinfo,
 854                                       const ProgressData::ReceiverFnc & progressrcv )
 855   {
 856     RepoInfo toedit = getRepositoryInfo(alias);
 857
 858     if (toedit.filepath().empty())
 859     {
 860       ZYPP_THROW(RepoException("Can't figure where the repo is stored"));
 861     }
 862     else
 863     {
 864       // figure how many repos are there in the file:
 865       std::list<RepoInfo> filerepos = repositories_in_file(toedit.filepath());
 866
 867       // there are more repos in the same file
 868       // write them back except the deleted one.
 869       //TmpFile tmp;
 870       //std::ofstream file(tmp.path().c_str());
 871
 872       // assert the directory exists
 873       filesystem::assert_dir(toedit.filepath().dirname());
 874
 875       std::ofstream file(toedit.filepath().c_str());
 876       if (!file) {
 877         //ZYPP_THROW (Exception( "Can't open " + tmp.path().asString() ) );
 878         ZYPP_THROW (Exception( "Can't open " + toedit.filepath().asString() ) );
 879       }
 880       for ( std::list<RepoInfo>::const_iterator fit = filerepos.begin();
 881             fit != filerepos.end();
 882             ++fit )
 883       {
 884           // if the alias is different, dump the original
 885           // if it is the same, dump the provided one
 886           if ( (*fit).alias() != toedit.alias() )
 887             (*fit).dumpRepoOn(file);
 888           else
 889             newinfo.dumpRepoOn(file);
 890       }
 891     }
 892   }
 893
 894   ////////////////////////////////////////////////////////////////////////////
 895
 896   RepoInfo RepoManager::getRepositoryInfo( const std::string &alias,
 897                                            const ProgressData::ReceiverFnc & progressrcv )
 898   {
 899     std::list<RepoInfo> repos = knownRepositories();
 900     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 901           it != repos.end();
 902           ++it )
 903     {
 904       if ( (*it).alias() == alias )
 905         return *it;
 906     }
 907     RepoInfo info;
 908     info.setAlias(info.alias());
 909     ZYPP_THROW(RepoNotFoundException(info));
 910   }
 911
 912   ////////////////////////////////////////////////////////////////////////////
 913
 914   RepoInfo RepoManager::getRepositoryInfo( const Url & url,
 915                                            const url::ViewOption & urlview,
 916                                            const ProgressData::ReceiverFnc & progressrcv )
 917   {
 918     std::list<RepoInfo> repos = knownRepositories();
 919     for ( std::list<RepoInfo>::const_iterator it = repos.begin();
 920           it != repos.end();
 921           ++it )
 922     {
 923       for(RepoInfo::urls_const_iterator urlit = (*it).baseUrlsBegin();
 924           urlit != (*it).baseUrlsEnd();
 925           ++urlit)
 926       {
 927         if ((*urlit).asString(urlview) == url.asString(urlview))
 928           return *it;
 929       }
 930     }
 931     RepoInfo info;
 932     info.setAlias(info.alias());
 933     info.setBaseUrl(url);
 934     ZYPP_THROW(RepoNotFoundException(info));
 935   }
 936
 937   ////////////////////////////////////////////////////////////////////////////
 938
 939   std::ostream & operator<<( std::ostream & str, const RepoManager & obj )
 940   {
 941     return str << *obj._pimpl;
 942   }
 943
 944   /////////////////////////////////////////////////////////////////
 945 } // namespace zypp
 946 ///////////////////////////////////////////////////////////////////