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1   package org.apache.maven.bridge;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.File;
23  import java.net.MalformedURLException;
24  import java.net.URL;
25  import java.util.ArrayList;
26  import java.util.Collection;
27  import java.util.Collections;
28  import java.util.HashSet;
29  import java.util.LinkedHashMap;
30  import java.util.List;
31  import java.util.Map;
32  import java.util.Set;
33  
34  import org.apache.maven.RepositoryUtils;
35  import org.apache.maven.artifact.Artifact;
36  import org.apache.maven.artifact.DefaultArtifact;
37  import org.apache.maven.artifact.InvalidRepositoryException;
38  import org.apache.maven.artifact.handler.ArtifactHandler;
39  import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager;
40  import org.apache.maven.artifact.repository.ArtifactRepository;
41  import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
42  import org.apache.maven.artifact.repository.Authentication;
43  import org.apache.maven.artifact.repository.MavenArtifactRepository;
44  import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
45  import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout2;
46  import org.apache.maven.artifact.repository.layout.DefaultRepositoryLayout;
47  import org.apache.maven.artifact.resolver.filter.ExclusionArtifactFilter;
48  import org.apache.maven.artifact.versioning.InvalidVersionSpecificationException;
49  import org.apache.maven.artifact.versioning.VersionRange;
50  import org.apache.maven.execution.MavenExecutionRequest;
51  import org.apache.maven.model.Dependency;
52  import org.apache.maven.model.Plugin;
53  import org.apache.maven.repository.Proxy;
54  import org.apache.maven.repository.RepositorySystem;
55  import org.apache.maven.settings.Mirror;
56  import org.codehaus.plexus.component.annotations.Component;
57  import org.codehaus.plexus.component.annotations.Requirement;
58  import org.codehaus.plexus.util.StringUtils;
59  import org.eclipse.aether.RepositorySystemSession;
60  import org.eclipse.aether.repository.AuthenticationContext;
61  import org.eclipse.aether.repository.AuthenticationSelector;
62  import org.eclipse.aether.repository.ProxySelector;
63  import org.eclipse.aether.repository.RemoteRepository;
64  
65  /**
66   * @author Jason van Zyl
67   */
68  @Component( role = MavenRepositorySystem.class, hint = "default" )
69  public class MavenRepositorySystem
70  {
71      @Requirement
72      private ArtifactHandlerManager artifactHandlerManager;
73  
74      @Requirement( role = ArtifactRepositoryLayout.class )
75      private Map<String, ArtifactRepositoryLayout> layouts;
76  
77      // DefaultProjectBuilder
78      public Artifact createArtifact( String groupId, String artifactId, String version, String scope, String type )
79      {
80          return createArtifactX( groupId, artifactId, version, scope, type );
81      }
82  
83      // DefaultProjectBuilder
84      public Artifact createProjectArtifact( String groupId, String artifactId, String metaVersionId )
85      {
86          return createProjectArtifactX( groupId, artifactId, metaVersionId );
87      }
88  
89      // DefaultProjectBuilder
90      public Artifact createDependencyArtifact( Dependency d )
91      {
92          if ( d.getVersion() == null )
93          {
94              return null;
95          }
96  
97          VersionRange versionRange;
98          try
99          {
100             versionRange = VersionRange.createFromVersionSpec( d.getVersion() );
101         }
102         catch ( InvalidVersionSpecificationException e )
103         {
104             return null;
105         }
106 
107         Artifact artifact =
108             createDependencyArtifactX( d.getGroupId(), d.getArtifactId(), versionRange, d.getType(),
109                                                       d.getClassifier(), d.getScope(), d.isOptional() );
110 
111         if ( Artifact.SCOPE_SYSTEM.equals( d.getScope() ) && d.getSystemPath() != null )
112         {
113             artifact.setFile( new File( d.getSystemPath() ) );
114         }
115 
116         if ( !d.getExclusions().isEmpty() )
117         {
118             artifact.setDependencyFilter( new ExclusionArtifactFilter( d.getExclusions() ) );
119         }
120 
121         return artifact;
122     }
123 
124     // DefaultProjectBuilder
125     public Artifact createExtensionArtifact( String groupId, String artifactId, String version )
126     {
127         VersionRange versionRange;
128         try
129         {
130             versionRange = VersionRange.createFromVersionSpec( version );
131         }
132         catch ( InvalidVersionSpecificationException e )
133         {
134             return null;
135         }
136 
137         return createExtensionArtifactX( groupId, artifactId, versionRange );
138     }
139 
140     // DefaultProjectBuilder
141     public Artifact createParentArtifact( String groupId, String artifactId, String version )
142     {
143         return createParentArtifactX( groupId, artifactId, version );
144     }
145 
146     // DefaultProjectBuilder
147     public Artifact createPluginArtifact( Plugin plugin )
148     {
149         VersionRange versionRange;
150         try
151         {
152             String version = plugin.getVersion();
153             if ( StringUtils.isEmpty( version ) )
154             {
155                 version = "RELEASE";
156             }
157             versionRange = VersionRange.createFromVersionSpec( version );
158         }
159         catch ( InvalidVersionSpecificationException e )
160         {
161             return null;
162         }
163 
164         return createPluginArtifactX( plugin.getGroupId(), plugin.getArtifactId(), versionRange );
165     }
166 
167     public void injectMirror( List<ArtifactRepository> repositories, List<Mirror> mirrors )
168     {
169         if ( repositories != null && mirrors != null )
170         {
171             for ( ArtifactRepository repository : repositories )
172             {
173                 Mirror mirror = getMirror( repository, mirrors );
174                 injectMirror( repository, mirror );
175             }
176         }
177     }
178 
179     private Mirror getMirror( RepositorySystemSession session, ArtifactRepository repository )
180     {
181         if ( session != null )
182         {
183             org.eclipse.aether.repository.MirrorSelector selector = session.getMirrorSelector();
184             if ( selector != null )
185             {
186                 RemoteRepository repo = selector.getMirror( RepositoryUtils.toRepo( repository ) );
187                 if ( repo != null )
188                 {
189                     Mirror mirror = new Mirror();
190                     mirror.setId( repo.getId() );
191                     mirror.setUrl( repo.getUrl() );
192                     mirror.setLayout( repo.getContentType() );
193                     return mirror;
194                 }
195             }
196         }
197         return null;
198     }
199 
200     public void injectMirror( RepositorySystemSession session, List<ArtifactRepository> repositories )
201     {
202         if ( repositories != null && session != null )
203         {
204             for ( ArtifactRepository repository : repositories )
205             {
206                 Mirror mirror = getMirror( session, repository );
207                 injectMirror( repository, mirror );
208             }
209         }
210     }
211 
212     private void injectMirror( ArtifactRepository repository, Mirror mirror )
213     {
214         if ( mirror != null )
215         {
216             ArtifactRepository original =
217                 createArtifactRepository( repository.getId(), repository.getUrl(), repository.getLayout(),
218                                           repository.getSnapshots(), repository.getReleases() );
219 
220             repository.setMirroredRepositories( Collections.singletonList( original ) );
221 
222             repository.setId( mirror.getId() );
223             repository.setUrl( mirror.getUrl() );
224 
225             if ( StringUtils.isNotEmpty( mirror.getLayout() ) )
226             {
227                 repository.setLayout( getLayout( mirror.getLayout() ) );
228             }
229         }
230     }
231 
232     private Authentication getAuthentication( RepositorySystemSession session, ArtifactRepository repository )
233     {
234         if ( session != null )
235         {
236             AuthenticationSelector selector = session.getAuthenticationSelector();
237             if ( selector != null )
238             {
239                 RemoteRepository repo = RepositoryUtils.toRepo( repository );
240                 org.eclipse.aether.repository.Authentication auth = selector.getAuthentication( repo );
241                 if ( auth != null )
242                 {
243                     repo = new RemoteRepository.Builder( repo ).setAuthentication( auth ).build();
244                     AuthenticationContext authCtx = AuthenticationContext.forRepository( session, repo );
245                     Authentication result =
246                         new Authentication( authCtx.get( AuthenticationContext.USERNAME ),
247                                             authCtx.get( AuthenticationContext.PASSWORD ) );
248                     result.setPrivateKey( authCtx.get( AuthenticationContext.PRIVATE_KEY_PATH ) );
249                     result.setPassphrase( authCtx.get( AuthenticationContext.PRIVATE_KEY_PASSPHRASE ) );
250                     authCtx.close();
251                     return result;
252                 }
253             }
254         }
255         return null;
256     }
257 
258     public void injectAuthentication( RepositorySystemSession session, List<ArtifactRepository> repositories )
259     {
260         if ( repositories != null && session != null )
261         {
262             for ( ArtifactRepository repository : repositories )
263             {
264                 repository.setAuthentication( getAuthentication( session, repository ) );
265             }
266         }
267     }
268 
269     private Proxy getProxy( RepositorySystemSession session, ArtifactRepository repository )
270     {
271         if ( session != null )
272         {
273             ProxySelector selector = session.getProxySelector();
274             if ( selector != null )
275             {
276                 RemoteRepository repo = RepositoryUtils.toRepo( repository );
277                 org.eclipse.aether.repository.Proxy proxy = selector.getProxy( repo );
278                 if ( proxy != null )
279                 {
280                     Proxy p = new Proxy();
281                     p.setHost( proxy.getHost() );
282                     p.setProtocol( proxy.getType() );
283                     p.setPort( proxy.getPort() );
284                     if ( proxy.getAuthentication() != null )
285                     {
286                         repo = new RemoteRepository.Builder( repo ).setProxy( proxy ).build();
287                         AuthenticationContext authCtx = AuthenticationContext.forProxy( session, repo );
288                         p.setUserName( authCtx.get( AuthenticationContext.USERNAME ) );
289                         p.setPassword( authCtx.get( AuthenticationContext.PASSWORD ) );
290                         p.setNtlmDomain( authCtx.get( AuthenticationContext.NTLM_DOMAIN ) );
291                         p.setNtlmHost( authCtx.get( AuthenticationContext.NTLM_WORKSTATION ) );
292                         authCtx.close();
293                     }
294                     return p;
295                 }
296             }
297         }
298         return null;
299     }
300 
301     public void injectProxy( RepositorySystemSession session, List<ArtifactRepository> repositories )
302     {
303         if ( repositories != null && session != null )
304         {
305             for ( ArtifactRepository repository : repositories )
306             {
307                 repository.setProxy( getProxy( session, repository ) );
308             }
309         }
310     }
311 
312     private ArtifactRepositoryLayout getLayout( String id )
313     {
314         ArtifactRepositoryLayout layout = layouts.get( id );
315 
316         return layout;
317     }
318 
319 
320     //
321     // Taken from LegacyRepositorySystem
322     //
323 
324     public static org.apache.maven.model.Repository fromSettingsRepository( org.apache.maven.settings.Repository
325                                                                             settingsRepository )
326     {
327         org.apache.maven.model.Repository modelRepository = new org.apache.maven.model.Repository();
328         modelRepository.setId( settingsRepository.getId() );
329         modelRepository.setLayout( settingsRepository.getLayout() );
330         modelRepository.setName( settingsRepository.getName() );
331         modelRepository.setUrl( settingsRepository.getUrl() );
332         modelRepository.setReleases( fromSettingsRepositoryPolicy( settingsRepository.getReleases() ) );
333         modelRepository.setSnapshots( fromSettingsRepositoryPolicy( settingsRepository.getSnapshots() ) );
334         return modelRepository;
335     }
336 
337     public static org.apache.maven.model.RepositoryPolicy fromSettingsRepositoryPolicy(
338                                                  org.apache.maven.settings.RepositoryPolicy settingsRepositoryPolicy )
339     {
340         org.apache.maven.model.RepositoryPolicy modelRepositoryPolicy = new org.apache.maven.model.RepositoryPolicy();
341         if ( settingsRepositoryPolicy != null )
342         {
343             modelRepositoryPolicy.setEnabled( settingsRepositoryPolicy.isEnabled() );
344             modelRepositoryPolicy.setUpdatePolicy( settingsRepositoryPolicy.getUpdatePolicy() );
345             modelRepositoryPolicy.setChecksumPolicy( settingsRepositoryPolicy.getChecksumPolicy() );
346         }
347         return modelRepositoryPolicy;
348     }
349 
350     public static ArtifactRepository buildArtifactRepository( org.apache.maven.settings.Repository repo )
351         throws InvalidRepositoryException
352     {
353         return buildArtifactRepository( fromSettingsRepository( repo ) );
354     }
355 
356     public static ArtifactRepository buildArtifactRepository( org.apache.maven.model.Repository repo )
357         throws InvalidRepositoryException
358     {
359         if ( repo != null )
360         {
361             String id = repo.getId();
362 
363             if ( StringUtils.isEmpty( id ) )
364             {
365                 throw new InvalidRepositoryException( "Repository identifier missing", "" );
366             }
367 
368             String url = repo.getUrl();
369 
370             if ( StringUtils.isEmpty( url ) )
371             {
372                 throw new InvalidRepositoryException( "URL missing for repository " + id, id );
373             }
374 
375             ArtifactRepositoryPolicy snapshots = buildArtifactRepositoryPolicy( repo.getSnapshots() );
376 
377             ArtifactRepositoryPolicy releases = buildArtifactRepositoryPolicy( repo.getReleases() );
378 
379             ArtifactRepositoryLayout layout = new DefaultRepositoryLayout();
380 
381             return createArtifactRepository( id, url, layout, snapshots, releases );
382         }
383         else
384         {
385             return null;
386         }
387     }
388 
389     public static ArtifactRepositoryPolicy buildArtifactRepositoryPolicy( org.apache.maven.model.RepositoryPolicy
390                                                                           policy )
391     {
392         boolean enabled = true;
393 
394         String updatePolicy = null;
395 
396         String checksumPolicy = null;
397 
398         if ( policy != null )
399         {
400             enabled = policy.isEnabled();
401 
402             if ( policy.getUpdatePolicy() != null )
403             {
404                 updatePolicy = policy.getUpdatePolicy();
405             }
406             if ( policy.getChecksumPolicy() != null )
407             {
408                 checksumPolicy = policy.getChecksumPolicy();
409             }
410         }
411 
412         return new ArtifactRepositoryPolicy( enabled, updatePolicy, checksumPolicy );
413     }    
414     
415     public ArtifactRepository createArtifactRepository( String id, String url, String layoutId,
416                                                         ArtifactRepositoryPolicy snapshots,
417                                                         ArtifactRepositoryPolicy releases )
418         throws Exception
419     {
420         ArtifactRepositoryLayout layout = layouts.get( layoutId );
421 
422         checkLayout( id, layoutId, layout );
423 
424         return createArtifactRepository( id, url, layout, snapshots, releases );
425     }
426 
427     private void checkLayout( String repositoryId, String layoutId, ArtifactRepositoryLayout layout )
428         throws Exception
429     {
430         if ( layout == null )
431         {
432             throw new Exception( String.format( "Cannot find ArtifactRepositoryLayout instance for: %s %s", layoutId,
433                                                 repositoryId ) );
434         }
435     }
436     
437     public static ArtifactRepository createArtifactRepository( String id, String url,
438                                                         ArtifactRepositoryLayout repositoryLayout,
439                                                         ArtifactRepositoryPolicy snapshots,
440                                                         ArtifactRepositoryPolicy releases )
441     {
442         if ( snapshots == null )
443         {
444             snapshots = new ArtifactRepositoryPolicy();
445         }
446 
447         if ( releases == null )
448         {
449             releases = new ArtifactRepositoryPolicy();
450         }
451 
452         ArtifactRepository repository;
453         if ( repositoryLayout instanceof ArtifactRepositoryLayout2 )
454         {
455             repository =
456                 ( (ArtifactRepositoryLayout2) repositoryLayout ).newMavenArtifactRepository( id, url, snapshots,
457                                                                                              releases );
458         }
459         else
460         {
461             repository = new MavenArtifactRepository( id, url, repositoryLayout, snapshots, releases );
462         }
463 
464         return repository;
465     }
466 
467     // ArtifactFactory
468     private Artifact createArtifactX( String groupId, String artifactId, String version, String scope, String type )
469     {
470         return createArtifactX( groupId, artifactId, version, scope, type, null, null );
471     }
472 
473     private Artifact createDependencyArtifactX( String groupId, String artifactId, VersionRange versionRange,
474                                                String type, String classifier, String scope, boolean optional )
475     {
476         return createArtifactX( groupId, artifactId, versionRange, type, classifier, scope, null, optional );
477     }
478 
479     private Artifact createProjectArtifactX( String groupId, String artifactId, String version )
480     {
481         return createProjectArtifactX( groupId, artifactId, version, null );
482     }
483 
484     private Artifact createParentArtifactX( String groupId, String artifactId, String version )
485     {
486         return createProjectArtifactX( groupId, artifactId, version );
487     }
488 
489     private Artifact createPluginArtifactX( String groupId, String artifactId, VersionRange versionRange )
490     {
491         return createArtifactX( groupId, artifactId, versionRange, "maven-plugin", null, Artifact.SCOPE_RUNTIME, null );
492     }
493 
494     private Artifact createProjectArtifactX( String groupId, String artifactId, String version, String scope )
495     {
496         return createArtifactX( groupId, artifactId, version, scope, "pom" );
497     }
498 
499     private Artifact createExtensionArtifactX( String groupId, String artifactId, VersionRange versionRange )
500     {
501         return createArtifactX( groupId, artifactId, versionRange, "jar", null, Artifact.SCOPE_RUNTIME, null );
502     }
503 
504     private Artifact createArtifactX( String groupId, String artifactId, String version, String scope, String type,
505                                      String classifier, String inheritedScope )
506     {
507         VersionRange versionRange = null;
508         if ( version != null )
509         {
510             versionRange = VersionRange.createFromVersion( version );
511         }
512         return createArtifactX( groupId, artifactId, versionRange, type, classifier, scope, inheritedScope );
513     }
514 
515     private Artifact createArtifactX( String groupId, String artifactId, VersionRange versionRange, String type,
516                                      String classifier, String scope, String inheritedScope )
517     {
518         return createArtifactX( groupId, artifactId, versionRange, type, classifier, scope, inheritedScope, false );
519     }
520 
521     @SuppressWarnings( "checkstyle:parameternumber" )
522     private Artifact createArtifactX( String groupId, String artifactId, VersionRange versionRange, String type,
523                                      String classifier, String scope, String inheritedScope, boolean optional )
524     {
525         String desiredScope = Artifact.SCOPE_RUNTIME;
526 
527         if ( inheritedScope == null )
528         {
529             desiredScope = scope;
530         }
531         else if ( Artifact.SCOPE_TEST.equals( scope ) || Artifact.SCOPE_PROVIDED.equals( scope ) )
532         {
533             return null;
534         }
535         else if ( Artifact.SCOPE_COMPILE.equals( scope ) && Artifact.SCOPE_COMPILE.equals( inheritedScope ) )
536         {
537             // added to retain compile artifactScope. Remove if you want compile inherited as runtime
538             desiredScope = Artifact.SCOPE_COMPILE;
539         }
540 
541         if ( Artifact.SCOPE_TEST.equals( inheritedScope ) )
542         {
543             desiredScope = Artifact.SCOPE_TEST;
544         }
545 
546         if ( Artifact.SCOPE_PROVIDED.equals( inheritedScope ) )
547         {
548             desiredScope = Artifact.SCOPE_PROVIDED;
549         }
550 
551         if ( Artifact.SCOPE_SYSTEM.equals( scope ) )
552         {
553             // system scopes come through unchanged...
554             desiredScope = Artifact.SCOPE_SYSTEM;
555         }
556 
557         ArtifactHandler handler = artifactHandlerManager.getArtifactHandler( type );
558 
559         return new DefaultArtifact( groupId, artifactId, versionRange, desiredScope, type, classifier, handler,
560                                     optional );
561     }
562     
563     //
564     // Code taken from LegacyRepositorySystem
565     //
566         
567     public ArtifactRepository createDefaultRemoteRepository( MavenExecutionRequest request )
568         throws Exception
569     {
570         return createRepository( RepositorySystem.DEFAULT_REMOTE_REPO_URL, RepositorySystem.DEFAULT_REMOTE_REPO_ID,
571                                  true, ArtifactRepositoryPolicy.UPDATE_POLICY_DAILY, false,
572                                  ArtifactRepositoryPolicy.UPDATE_POLICY_DAILY,
573                                  ArtifactRepositoryPolicy.CHECKSUM_POLICY_WARN );
574     }
575     
576     public ArtifactRepository createRepository( String url, String repositoryId, boolean releases,
577                                                  String releaseUpdates, boolean snapshots, String snapshotUpdates,
578                                                  String checksumPolicy ) throws Exception
579     {
580         ArtifactRepositoryPolicy snapshotsPolicy =
581             new ArtifactRepositoryPolicy( snapshots, snapshotUpdates, checksumPolicy );
582 
583         ArtifactRepositoryPolicy releasesPolicy =
584             new ArtifactRepositoryPolicy( releases, releaseUpdates, checksumPolicy );
585 
586         return createArtifactRepository( repositoryId, url, "default", snapshotsPolicy, releasesPolicy );
587     }
588         
589     public Set<String> getRepoIds( List<ArtifactRepository> repositories )
590     {
591         Set<String> repoIds = new HashSet<>();
592 
593         if ( repositories != null )
594         {
595             for ( ArtifactRepository repository : repositories )
596             {
597                 repoIds.add( repository.getId() );
598             }
599         }
600 
601         return repoIds;
602     }
603 
604     /**
605      * Source from org.apache.maven.repository.legacy.LegacyRepositorySystem#getEffectiveRepositories
606      *
607      * @param repositories
608      * @return
609      * @since 3.6.1
610      */
611     public List<ArtifactRepository> getEffectiveRepositories( List<ArtifactRepository> repositories )
612     {
613         if ( repositories == null )
614         {
615             return null;
616         }
617 
618         Map<String, List<ArtifactRepository>> reposByKey = new LinkedHashMap<>();
619 
620         for ( ArtifactRepository repository : repositories )
621         {
622             String key = repository.getId();
623 
624             List<ArtifactRepository> aliasedRepos = reposByKey.get( key );
625 
626             if ( aliasedRepos == null )
627             {
628                 aliasedRepos = new ArrayList<>();
629                 reposByKey.put( key, aliasedRepos );
630             }
631 
632             aliasedRepos.add( repository );
633         }
634 
635         List<ArtifactRepository> effectiveRepositories = new ArrayList<>();
636 
637         for ( List<ArtifactRepository> aliasedRepos : reposByKey.values() )
638         {
639             List<ArtifactRepository> mirroredRepos = new ArrayList<>();
640 
641             List<ArtifactRepositoryPolicy> releasePolicies =
642                     new ArrayList<>( aliasedRepos.size() );
643 
644             for ( ArtifactRepository aliasedRepo : aliasedRepos )
645             {
646                 releasePolicies.add( aliasedRepo.getReleases() );
647                 mirroredRepos.addAll( aliasedRepo.getMirroredRepositories() );
648             }
649 
650             ArtifactRepositoryPolicy releasePolicy = getEffectivePolicy( releasePolicies );
651 
652             List<ArtifactRepositoryPolicy> snapshotPolicies =
653                     new ArrayList<>( aliasedRepos.size() );
654 
655             for ( ArtifactRepository aliasedRepo : aliasedRepos )
656             {
657                 snapshotPolicies.add( aliasedRepo.getSnapshots() );
658             }
659 
660             ArtifactRepositoryPolicy snapshotPolicy = getEffectivePolicy( snapshotPolicies );
661 
662             ArtifactRepository aliasedRepo = aliasedRepos.get( 0 );
663 
664             ArtifactRepository effectiveRepository =
665                     createArtifactRepository( aliasedRepo.getId(), aliasedRepo.getUrl(), aliasedRepo.getLayout(),
666                             snapshotPolicy, releasePolicy );
667 
668             effectiveRepository.setAuthentication( aliasedRepo.getAuthentication() );
669 
670             effectiveRepository.setProxy( aliasedRepo.getProxy() );
671 
672             effectiveRepository.setMirroredRepositories( mirroredRepos );
673 
674             effectiveRepositories.add( effectiveRepository );
675         }
676 
677         return effectiveRepositories;
678     }
679 
680     private ArtifactRepositoryPolicy getEffectivePolicy( Collection<ArtifactRepositoryPolicy> policies )
681     {
682         ArtifactRepositoryPolicy effectivePolicy = null;
683 
684         for ( ArtifactRepositoryPolicy policy : policies )
685         {
686             if ( effectivePolicy == null )
687             {
688                 effectivePolicy = new ArtifactRepositoryPolicy( policy );
689             }
690             else
691             {
692                 effectivePolicy.merge( policy );
693             }
694         }
695 
696         return effectivePolicy;
697     }
698 
699     public ArtifactRepository createLocalRepository( MavenExecutionRequest request, File localRepository )
700         throws Exception
701     {
702         return createRepository( "file://" + localRepository.toURI().getRawPath(),
703                                  RepositorySystem.DEFAULT_LOCAL_REPO_ID, true,
704                                  ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS, true,
705                                  ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS,
706                                  ArtifactRepositoryPolicy.CHECKSUM_POLICY_IGNORE );
707     }    
708     
709     private static final String WILDCARD = "*";
710 
711     private static final String EXTERNAL_WILDCARD = "external:*";
712 
713     public static Mirror getMirror( ArtifactRepository repository, List<Mirror> mirrors )
714     {
715         String repoId = repository.getId();
716 
717         if ( repoId != null && mirrors != null )
718         {
719             for ( Mirror mirror : mirrors )
720             {
721                 if ( repoId.equals( mirror.getMirrorOf() ) && matchesLayout( repository, mirror ) )
722                 {
723                     return mirror;
724                 }
725             }
726 
727             for ( Mirror mirror : mirrors )
728             {
729                 if ( matchPattern( repository, mirror.getMirrorOf() ) && matchesLayout( repository, mirror ) )
730                 {
731                     return mirror;
732                 }
733             }
734         }
735 
736         return null;
737     }
738 
739     /**
740      * This method checks if the pattern matches the originalRepository. Valid patterns: * = everything external:* =
741      * everything not on the localhost and not file based. repo,repo1 = repo or repo1 *,!repo1 = everything except repo1
742      *
743      * @param originalRepository to compare for a match.
744      * @param pattern used for match. Currently only '*' is supported.
745      * @return true if the repository is a match to this pattern.
746      */
747     static boolean matchPattern( ArtifactRepository originalRepository, String pattern )
748     {
749         boolean result = false;
750         String originalId = originalRepository.getId();
751 
752         // simple checks first to short circuit processing below.
753         if ( WILDCARD.equals( pattern ) || pattern.equals( originalId ) )
754         {
755             result = true;
756         }
757         else
758         {
759             // process the list
760             String[] repos = pattern.split( "," );
761             for ( String repo : repos )
762             {
763                 // see if this is a negative match
764                 if ( repo.length() > 1 && repo.startsWith( "!" ) )
765                 {
766                     if ( repo.substring( 1 ).equals( originalId ) )
767                     {
768                         // explicitly exclude. Set result and stop processing.
769                         result = false;
770                         break;
771                     }
772                 }
773                 // check for exact match
774                 else if ( repo.equals( originalId ) )
775                 {
776                     result = true;
777                     break;
778                 }
779                 // check for external:*
780                 else if ( EXTERNAL_WILDCARD.equals( repo ) && isExternalRepo( originalRepository ) )
781                 {
782                     result = true;
783                     // don't stop processing in case a future segment explicitly excludes this repo
784                 }
785                 else if ( WILDCARD.equals( repo ) )
786                 {
787                     result = true;
788                     // don't stop processing in case a future segment explicitly excludes this repo
789                 }
790             }
791         }
792         return result;
793     }
794 
795     /**
796      * Checks the URL to see if this repository refers to an external repository
797      *
798      * @param originalRepository
799      * @return true if external.
800      */
801     static boolean isExternalRepo( ArtifactRepository originalRepository )
802     {
803         try
804         {
805             URL url = new URL( originalRepository.getUrl() );
806             return !( url.getHost().equals( "localhost" ) || url.getHost().equals( "127.0.0.1" )
807                             || url.getProtocol().equals( "file" ) );
808         }
809         catch ( MalformedURLException e )
810         {
811             // bad url just skip it here. It should have been validated already, but the wagon lookup will deal with it
812             return false;
813         }
814     }
815 
816     static boolean matchesLayout( ArtifactRepository repository, Mirror mirror )
817     {
818         return matchesLayout( RepositoryUtils.getLayout( repository ), mirror.getMirrorOfLayouts() );
819     }
820 
821     /**
822      * Checks whether the layouts configured for a mirror match with the layout of the repository.
823      *
824      * @param repoLayout The layout of the repository, may be {@code null}.
825      * @param mirrorLayout The layouts supported by the mirror, may be {@code null}.
826      * @return {@code true} if the layouts associated with the mirror match the layout of the original repository,
827      *         {@code false} otherwise.
828      */
829     static boolean matchesLayout( String repoLayout, String mirrorLayout )
830     {
831         boolean result = false;
832 
833         // simple checks first to short circuit processing below.
834         if ( StringUtils.isEmpty( mirrorLayout ) || WILDCARD.equals( mirrorLayout ) )
835         {
836             result = true;
837         }
838         else if ( mirrorLayout.equals( repoLayout ) )
839         {
840             result = true;
841         }
842         else
843         {
844             // process the list
845             String[] layouts = mirrorLayout.split( "," );
846             for ( String layout : layouts )
847             {
848                 // see if this is a negative match
849                 if ( layout.length() > 1 && layout.startsWith( "!" ) )
850                 {
851                     if ( layout.substring( 1 ).equals( repoLayout ) )
852                     {
853                         // explicitly exclude. Set result and stop processing.
854                         result = false;
855                         break;
856                     }
857                 }
858                 // check for exact match
859                 else if ( layout.equals( repoLayout ) )
860                 {
861                     result = true;
862                     break;
863                 }
864                 else if ( WILDCARD.equals( layout ) )
865                 {
866                     result = true;
867                     // don't stop processing in case a future segment explicitly excludes this repo
868                 }
869             }
870         }
871 
872         return result;
873     }    
874 }