src/main/java/net/pterodactylus/sone/core/Core.java

   1 /*
   2  * Sone - Core.java - Copyright © 2010–2012 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Map.Entry;
  28 import java.util.Set;
  29 import java.util.concurrent.ExecutorService;
  30 import java.util.concurrent.Executors;
  31 import java.util.logging.Level;
  32 import java.util.logging.Logger;
  33
  34 import net.pterodactylus.sone.core.Options.DefaultOption;
  35 import net.pterodactylus.sone.core.Options.Option;
  36 import net.pterodactylus.sone.core.Options.OptionWatcher;
  37 import net.pterodactylus.sone.data.Album;
  38 import net.pterodactylus.sone.data.Client;
  39 import net.pterodactylus.sone.data.Image;
  40 import net.pterodactylus.sone.data.Post;
  41 import net.pterodactylus.sone.data.PostReply;
  42 import net.pterodactylus.sone.data.Profile;
  43 import net.pterodactylus.sone.data.Profile.Field;
  44 import net.pterodactylus.sone.data.Reply;
  45 import net.pterodactylus.sone.data.Sone;
  46 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  47 import net.pterodactylus.sone.data.Sone.SoneStatus;
  48 import net.pterodactylus.sone.data.TemporaryImage;
  49 import net.pterodactylus.sone.data.impl.PostImpl;
  50 import net.pterodactylus.sone.fcp.FcpInterface;
  51 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  52 import net.pterodactylus.sone.freenet.wot.Identity;
  53 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  54 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  55 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  56 import net.pterodactylus.sone.freenet.wot.Trust;
  57 import net.pterodactylus.sone.freenet.wot.WebOfTrustException;
  58 import net.pterodactylus.sone.main.SonePlugin;
  59 import net.pterodactylus.util.config.Configuration;
  60 import net.pterodactylus.util.config.ConfigurationException;
  61 import net.pterodactylus.util.logging.Logging;
  62 import net.pterodactylus.util.number.Numbers;
  63 import net.pterodactylus.util.service.AbstractService;
  64 import net.pterodactylus.util.thread.Ticker;
  65 import net.pterodactylus.util.validation.EqualityValidator;
  66 import net.pterodactylus.util.validation.IntegerRangeValidator;
  67 import net.pterodactylus.util.validation.OrValidator;
  68 import net.pterodactylus.util.validation.Validation;
  69 import net.pterodactylus.util.version.Version;
  70 import freenet.keys.FreenetURI;
  71
  72 /**
  73  * The Sone core.
  74  *
  75  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  76  */
  77 public class Core extends AbstractService implements IdentityListener, UpdateListener, SoneProvider, PostProvider, SoneInsertListener, ImageInsertListener {
  78
  79         /** The logger. */
  80         private static final Logger logger = Logging.getLogger(Core.class);
  81
  82         /** The options. */
  83         private final Options options = new Options();
  84
  85         /** The preferences. */
  86         private final Preferences preferences = new Preferences(options);
  87
  88         /** The core listener manager. */
  89         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
  90
  91         /** The configuration. */
  92         private Configuration configuration;
  93
  94         /** Whether we’re currently saving the configuration. */
  95         private boolean storingConfiguration = false;
  96
  97         /** The identity manager. */
  98         private final IdentityManager identityManager;
  99
 100         /** Interface to freenet. */
 101         private final FreenetInterface freenetInterface;
 102
 103         /** The Sone downloader. */
 104         private final SoneDownloader soneDownloader;
 105
 106         /** The image inserter. */
 107         private final ImageInserter imageInserter;
 108
 109         /** Sone downloader thread-pool. */
 110         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10);
 111
 112         /** The update checker. */
 113         private final UpdateChecker updateChecker;
 114
 115         /** The trust updater. */
 116         private final WebOfTrustUpdater webOfTrustUpdater;
 117
 118         /** The FCP interface. */
 119         private volatile FcpInterface fcpInterface;
 120
 121         /** The times Sones were followed. */
 122         private final Map<Sone, Long> soneFollowingTimes = new HashMap<Sone, Long>();
 123
 124         /** Locked local Sones. */
 125         /* synchronize on itself. */
 126         private final Set<Sone> lockedSones = new HashSet<Sone>();
 127
 128         /** Sone inserters. */
 129         /* synchronize access on this on localSones. */
 130         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 131
 132         /** Sone rescuers. */
 133         /* synchronize access on this on localSones. */
 134         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 135
 136         /** All local Sones. */
 137         /* synchronize access on this on itself. */
 138         private final Map<String, Sone> localSones = new HashMap<String, Sone>();
 139
 140         /** All remote Sones. */
 141         /* synchronize access on this on itself. */
 142         private final Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 143
 144         /** All known Sones. */
 145         private final Set<String> knownSones = new HashSet<String>();
 146
 147         /** All posts. */
 148         private final Map<String, Post> posts = new HashMap<String, Post>();
 149
 150         /** All known posts. */
 151         private final Set<String> knownPosts = new HashSet<String>();
 152
 153         /** All replies. */
 154         private final Map<String, PostReply> replies = new HashMap<String, PostReply>();
 155
 156         /** All known replies. */
 157         private final Set<String> knownReplies = new HashSet<String>();
 158
 159         /** All bookmarked posts. */
 160         /* synchronize access on itself. */
 161         private final Set<String> bookmarkedPosts = new HashSet<String>();
 162
 163         /** Trusted identities, sorted by own identities. */
 164         private final Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 165
 166         /** All known albums. */
 167         private final Map<String, Album> albums = new HashMap<String, Album>();
 168
 169         /** All known images. */
 170         private final Map<String, Image> images = new HashMap<String, Image>();
 171
 172         /** All temporary images. */
 173         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 174
 175         /** Ticker for threads that mark own elements as known. */
 176         private final Ticker localElementTicker = new Ticker();
 177
 178         /** The time the configuration was last touched. */
 179         private volatile long lastConfigurationUpdate;
 180
 181         /**
 182          * Creates a new core.
 183          *
 184          * @param configuration
 185          *            The configuration of the core
 186          * @param freenetInterface
 187          *            The freenet interface
 188          * @param identityManager
 189          *            The identity manager
 190          * @param webOfTrustUpdater
 191          *            The WebOfTrust updater
 192          */
 193         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater) {
 194                 super("Sone Core");
 195                 this.configuration = configuration;
 196                 this.freenetInterface = freenetInterface;
 197                 this.identityManager = identityManager;
 198                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 199                 this.imageInserter = new ImageInserter(this, freenetInterface);
 200                 this.updateChecker = new UpdateChecker(freenetInterface);
 201                 this.webOfTrustUpdater = webOfTrustUpdater;
 202         }
 203
 204         //
 205         // LISTENER MANAGEMENT
 206         //
 207
 208         /**
 209          * Adds a new core listener.
 210          *
 211          * @param coreListener
 212          *            The listener to add
 213          */
 214         public void addCoreListener(CoreListener coreListener) {
 215                 coreListenerManager.addListener(coreListener);
 216         }
 217
 218         /**
 219          * Removes a core listener.
 220          *
 221          * @param coreListener
 222          *            The listener to remove
 223          */
 224         public void removeCoreListener(CoreListener coreListener) {
 225                 coreListenerManager.removeListener(coreListener);
 226         }
 227
 228         //
 229         // ACCESSORS
 230         //
 231
 232         /**
 233          * Sets the configuration to use. This will automatically save the current
 234          * configuration to the given configuration.
 235          *
 236          * @param configuration
 237          *            The new configuration to use
 238          */
 239         public void setConfiguration(Configuration configuration) {
 240                 this.configuration = configuration;
 241                 touchConfiguration();
 242         }
 243
 244         /**
 245          * Returns the options used by the core.
 246          *
 247          * @return The options of the core
 248          */
 249         public Preferences getPreferences() {
 250                 return preferences;
 251         }
 252
 253         /**
 254          * Returns the identity manager used by the core.
 255          *
 256          * @return The identity manager
 257          */
 258         public IdentityManager getIdentityManager() {
 259                 return identityManager;
 260         }
 261
 262         /**
 263          * Returns the update checker.
 264          *
 265          * @return The update checker
 266          */
 267         public UpdateChecker getUpdateChecker() {
 268                 return updateChecker;
 269         }
 270
 271         /**
 272          * Sets the FCP interface to use.
 273          *
 274          * @param fcpInterface
 275          *            The FCP interface to use
 276          */
 277         public void setFcpInterface(FcpInterface fcpInterface) {
 278                 this.fcpInterface = fcpInterface;
 279         }
 280
 281         /**
 282          * Returns the Sone rescuer for the given local Sone.
 283          *
 284          * @param sone
 285          *            The local Sone to get the rescuer for
 286          * @return The Sone rescuer for the given Sone
 287          */
 288         public SoneRescuer getSoneRescuer(Sone sone) {
 289                 Validation.begin().isNotNull("Sone", sone).check().is("Local Sone", isLocalSone(sone)).check();
 290                 synchronized (localSones) {
 291                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 292                         if (soneRescuer == null) {
 293                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 294                                 soneRescuers.put(sone, soneRescuer);
 295                                 soneRescuer.start();
 296                         }
 297                         return soneRescuer;
 298                 }
 299         }
 300
 301         /**
 302          * Returns whether the given Sone is currently locked.
 303          *
 304          * @param sone
 305          *            The sone to check
 306          * @return {@code true} if the Sone is locked, {@code false} if it is not
 307          */
 308         public boolean isLocked(Sone sone) {
 309                 synchronized (lockedSones) {
 310                         return lockedSones.contains(sone);
 311                 }
 312         }
 313
 314         /**
 315          * Returns all Sones, remote and local.
 316          *
 317          * @return All Sones
 318          */
 319         public Set<Sone> getSones() {
 320                 Set<Sone> allSones = new HashSet<Sone>();
 321                 allSones.addAll(getLocalSones());
 322                 allSones.addAll(getRemoteSones());
 323                 return allSones;
 324         }
 325
 326         /**
 327          * Returns the Sone with the given ID, regardless whether it’s local or
 328          * remote.
 329          *
 330          * @param id
 331          *            The ID of the Sone to get
 332          * @return The Sone with the given ID, or {@code null} if there is no such
 333          *         Sone
 334          */
 335         public Sone getSone(String id) {
 336                 return getSone(id, true);
 337         }
 338
 339         /**
 340          * Returns the Sone with the given ID, regardless whether it’s local or
 341          * remote.
 342          *
 343          * @param id
 344          *            The ID of the Sone to get
 345          * @param create
 346          *            {@code true} to create a new Sone if none exists,
 347          *            {@code false} to return {@code null} if a Sone with the given
 348          *            ID does not exist
 349          * @return The Sone with the given ID, or {@code null} if there is no such
 350          *         Sone
 351          */
 352         @Override
 353         public Sone getSone(String id, boolean create) {
 354                 if (isLocalSone(id)) {
 355                         return getLocalSone(id);
 356                 }
 357                 return getRemoteSone(id, create);
 358         }
 359
 360         /**
 361          * Checks whether the core knows a Sone with the given ID.
 362          *
 363          * @param id
 364          *            The ID of the Sone
 365          * @return {@code true} if there is a Sone with the given ID, {@code false}
 366          *         otherwise
 367          */
 368         public boolean hasSone(String id) {
 369                 return isLocalSone(id) || isRemoteSone(id);
 370         }
 371
 372         /**
 373          * Returns whether the given Sone is a local Sone.
 374          *
 375          * @param sone
 376          *            The Sone to check for its locality
 377          * @return {@code true} if the given Sone is local, {@code false} otherwise
 378          */
 379         public boolean isLocalSone(Sone sone) {
 380                 synchronized (localSones) {
 381                         return localSones.containsKey(sone.getId());
 382                 }
 383         }
 384
 385         /**
 386          * Returns whether the given ID is the ID of a local Sone.
 387          *
 388          * @param id
 389          *            The Sone ID to check for its locality
 390          * @return {@code true} if the given ID is a local Sone, {@code false}
 391          *         otherwise
 392          */
 393         public boolean isLocalSone(String id) {
 394                 synchronized (localSones) {
 395                         return localSones.containsKey(id);
 396                 }
 397         }
 398
 399         /**
 400          * Returns all local Sones.
 401          *
 402          * @return All local Sones
 403          */
 404         public Set<Sone> getLocalSones() {
 405                 synchronized (localSones) {
 406                         return new HashSet<Sone>(localSones.values());
 407                 }
 408         }
 409
 410         /**
 411          * Returns the local Sone with the given ID.
 412          *
 413          * @param id
 414          *            The ID of the Sone to get
 415          * @return The Sone with the given ID
 416          */
 417         public Sone getLocalSone(String id) {
 418                 return getLocalSone(id, true);
 419         }
 420
 421         /**
 422          * Returns the local Sone with the given ID, optionally creating a new Sone.
 423          *
 424          * @param id
 425          *            The ID of the Sone
 426          * @param create
 427          *            {@code true} to create a new Sone if none exists,
 428          *            {@code false} to return null if none exists
 429          * @return The Sone with the given ID, or {@code null}
 430          */
 431         public Sone getLocalSone(String id, boolean create) {
 432                 synchronized (localSones) {
 433                         Sone sone = localSones.get(id);
 434                         if ((sone == null) && create) {
 435                                 sone = new Sone(id);
 436                                 localSones.put(id, sone);
 437                         }
 438                         return sone;
 439                 }
 440         }
 441
 442         /**
 443          * Returns all remote Sones.
 444          *
 445          * @return All remote Sones
 446          */
 447         public Set<Sone> getRemoteSones() {
 448                 synchronized (remoteSones) {
 449                         return new HashSet<Sone>(remoteSones.values());
 450                 }
 451         }
 452
 453         /**
 454          * Returns the remote Sone with the given ID.
 455          *
 456          * @param id
 457          *            The ID of the remote Sone to get
 458          * @param create
 459          *            {@code true} to always create a Sone, {@code false} to return
 460          *            {@code null} if no Sone with the given ID exists
 461          * @return The Sone with the given ID
 462          */
 463         public Sone getRemoteSone(String id, boolean create) {
 464                 synchronized (remoteSones) {
 465                         Sone sone = remoteSones.get(id);
 466                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 467                                 sone = new Sone(id);
 468                                 remoteSones.put(id, sone);
 469                         }
 470                         return sone;
 471                 }
 472         }
 473
 474         /**
 475          * Returns whether the given Sone is a remote Sone.
 476          *
 477          * @param sone
 478          *            The Sone to check
 479          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 480          *         otherwise
 481          */
 482         public boolean isRemoteSone(Sone sone) {
 483                 synchronized (remoteSones) {
 484                         return remoteSones.containsKey(sone.getId());
 485                 }
 486         }
 487
 488         /**
 489          * Returns whether the Sone with the given ID is a remote Sone.
 490          *
 491          * @param id
 492          *            The ID of the Sone to check
 493          * @return {@code true} if the Sone with the given ID is a remote Sone,
 494          *         {@code false} otherwise
 495          */
 496         public boolean isRemoteSone(String id) {
 497                 synchronized (remoteSones) {
 498                         return remoteSones.containsKey(id);
 499                 }
 500         }
 501
 502         /**
 503          * Returns whether the given Sone has been modified.
 504          *
 505          * @param sone
 506          *            The Sone to check for modifications
 507          * @return {@code true} if a modification has been detected in the Sone,
 508          *         {@code false} otherwise
 509          */
 510         public boolean isModifiedSone(Sone sone) {
 511                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 512         }
 513
 514         /**
 515          * Returns the time when the given was first followed by any local Sone.
 516          *
 517          * @param sone
 518          *            The Sone to get the time for
 519          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 520          *         been followed, or {@link Long#MAX_VALUE}
 521          */
 522         public long getSoneFollowingTime(Sone sone) {
 523                 synchronized (soneFollowingTimes) {
 524                         if (soneFollowingTimes.containsKey(sone)) {
 525                                 return soneFollowingTimes.get(sone);
 526                         }
 527                         return Long.MAX_VALUE;
 528                 }
 529         }
 530
 531         /**
 532          * Returns whether the target Sone is trusted by the origin Sone.
 533          *
 534          * @param origin
 535          *            The origin Sone
 536          * @param target
 537          *            The target Sone
 538          * @return {@code true} if the target Sone is trusted by the origin Sone
 539          */
 540         public boolean isSoneTrusted(Sone origin, Sone target) {
 541                 Validation.begin().isNotNull("Origin", origin).isNotNull("Target", target).check().isInstanceOf("Origin’s OwnIdentity", origin.getIdentity(), OwnIdentity.class).check();
 542                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 543         }
 544
 545         /**
 546          * Returns the post with the given ID.
 547          *
 548          * @param postId
 549          *            The ID of the post to get
 550          * @return The post with the given ID, or a new post with the given ID
 551          */
 552         public Post getPost(String postId) {
 553                 return getPost(postId, true);
 554         }
 555
 556         /**
 557          * Returns the post with the given ID, optionally creating a new post.
 558          *
 559          * @param postId
 560          *            The ID of the post to get
 561          * @param create
 562          *            {@code true} it create a new post if no post with the given ID
 563          *            exists, {@code false} to return {@code null}
 564          * @return The post, or {@code null} if there is no such post
 565          */
 566         @Override
 567         public Post getPost(String postId, boolean create) {
 568                 synchronized (posts) {
 569                         Post post = posts.get(postId);
 570                         if ((post == null) && create) {
 571                                 post = new PostImpl(postId);
 572                                 posts.put(postId, post);
 573                         }
 574                         return post;
 575                 }
 576         }
 577
 578         /**
 579          * Returns all posts that have the given Sone as recipient.
 580          *
 581          * @see Post#getRecipient()
 582          * @param recipient
 583          *            The recipient of the posts
 584          * @return All posts that have the given Sone as recipient
 585          */
 586         public Set<Post> getDirectedPosts(Sone recipient) {
 587                 Validation.begin().isNotNull("Recipient", recipient).check();
 588                 Set<Post> directedPosts = new HashSet<Post>();
 589                 synchronized (posts) {
 590                         for (Post post : posts.values()) {
 591                                 if (recipient.equals(post.getRecipient())) {
 592                                         directedPosts.add(post);
 593                                 }
 594                         }
 595                 }
 596                 return directedPosts;
 597         }
 598
 599         /**
 600          * Returns the reply with the given ID. If there is no reply with the given
 601          * ID yet, a new one is created.
 602          *
 603          * @param replyId
 604          *            The ID of the reply to get
 605          * @return The reply
 606          */
 607         public PostReply getReply(String replyId) {
 608                 return getReply(replyId, true);
 609         }
 610
 611         /**
 612          * Returns the reply with the given ID. If there is no reply with the given
 613          * ID yet, a new one is created, unless {@code create} is false in which
 614          * case {@code null} is returned.
 615          *
 616          * @param replyId
 617          *            The ID of the reply to get
 618          * @param create
 619          *            {@code true} to always return a {@link Reply}, {@code false}
 620          *            to return {@code null} if no reply can be found
 621          * @return The reply, or {@code null} if there is no such reply
 622          */
 623         public PostReply getReply(String replyId, boolean create) {
 624                 synchronized (replies) {
 625                         PostReply reply = replies.get(replyId);
 626                         if (create && (reply == null)) {
 627                                 reply = new PostReply(replyId);
 628                                 replies.put(replyId, reply);
 629                         }
 630                         return reply;
 631                 }
 632         }
 633
 634         /**
 635          * Returns all replies for the given post, order ascending by time.
 636          *
 637          * @param post
 638          *            The post to get all replies for
 639          * @return All replies for the given post
 640          */
 641         public List<PostReply> getReplies(Post post) {
 642                 Set<Sone> sones = getSones();
 643                 List<PostReply> replies = new ArrayList<PostReply>();
 644                 for (Sone sone : sones) {
 645                         for (PostReply reply : sone.getReplies()) {
 646                                 if (reply.getPost().equals(post)) {
 647                                         replies.add(reply);
 648                                 }
 649                         }
 650                 }
 651                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 652                 return replies;
 653         }
 654
 655         /**
 656          * Returns all Sones that have liked the given post.
 657          *
 658          * @param post
 659          *            The post to get the liking Sones for
 660          * @return The Sones that like the given post
 661          */
 662         public Set<Sone> getLikes(Post post) {
 663                 Set<Sone> sones = new HashSet<Sone>();
 664                 for (Sone sone : getSones()) {
 665                         if (sone.getLikedPostIds().contains(post.getId())) {
 666                                 sones.add(sone);
 667                         }
 668                 }
 669                 return sones;
 670         }
 671
 672         /**
 673          * Returns all Sones that have liked the given reply.
 674          *
 675          * @param reply
 676          *            The reply to get the liking Sones for
 677          * @return The Sones that like the given reply
 678          */
 679         public Set<Sone> getLikes(PostReply reply) {
 680                 Set<Sone> sones = new HashSet<Sone>();
 681                 for (Sone sone : getSones()) {
 682                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 683                                 sones.add(sone);
 684                         }
 685                 }
 686                 return sones;
 687         }
 688
 689         /**
 690          * Returns whether the given post is bookmarked.
 691          *
 692          * @param post
 693          *            The post to check
 694          * @return {@code true} if the given post is bookmarked, {@code false}
 695          *         otherwise
 696          */
 697         public boolean isBookmarked(Post post) {
 698                 return isPostBookmarked(post.getId());
 699         }
 700
 701         /**
 702          * Returns whether the post with the given ID is bookmarked.
 703          *
 704          * @param id
 705          *            The ID of the post to check
 706          * @return {@code true} if the post with the given ID is bookmarked,
 707          *         {@code false} otherwise
 708          */
 709         public boolean isPostBookmarked(String id) {
 710                 synchronized (bookmarkedPosts) {
 711                         return bookmarkedPosts.contains(id);
 712                 }
 713         }
 714
 715         /**
 716          * Returns all currently known bookmarked posts.
 717          *
 718          * @return All bookmarked posts
 719          */
 720         public Set<Post> getBookmarkedPosts() {
 721                 Set<Post> posts = new HashSet<Post>();
 722                 synchronized (bookmarkedPosts) {
 723                         for (String bookmarkedPostId : bookmarkedPosts) {
 724                                 Post post = getPost(bookmarkedPostId, false);
 725                                 if (post != null) {
 726                                         posts.add(post);
 727                                 }
 728                         }
 729                 }
 730                 return posts;
 731         }
 732
 733         /**
 734          * Returns the album with the given ID, creating a new album if no album
 735          * with the given ID can be found.
 736          *
 737          * @param albumId
 738          *            The ID of the album
 739          * @return The album with the given ID
 740          */
 741         public Album getAlbum(String albumId) {
 742                 return getAlbum(albumId, true);
 743         }
 744
 745         /**
 746          * Returns the album with the given ID, optionally creating a new album if
 747          * an album with the given ID can not be found.
 748          *
 749          * @param albumId
 750          *            The ID of the album
 751          * @param create
 752          *            {@code true} to create a new album if none exists for the
 753          *            given ID
 754          * @return The album with the given ID, or {@code null} if no album with the
 755          *         given ID exists and {@code create} is {@code false}
 756          */
 757         public Album getAlbum(String albumId, boolean create) {
 758                 synchronized (albums) {
 759                         Album album = albums.get(albumId);
 760                         if (create && (album == null)) {
 761                                 album = new Album(albumId);
 762                                 albums.put(albumId, album);
 763                         }
 764                         return album;
 765                 }
 766         }
 767
 768         /**
 769          * Returns the image with the given ID, creating it if necessary.
 770          *
 771          * @param imageId
 772          *            The ID of the image
 773          * @return The image with the given ID
 774          */
 775         public Image getImage(String imageId) {
 776                 return getImage(imageId, true);
 777         }
 778
 779         /**
 780          * Returns the image with the given ID, optionally creating it if it does
 781          * not exist.
 782          *
 783          * @param imageId
 784          *            The ID of the image
 785          * @param create
 786          *            {@code true} to create an image if none exists with the given
 787          *            ID
 788          * @return The image with the given ID, or {@code null} if none exists and
 789          *         none was created
 790          */
 791         public Image getImage(String imageId, boolean create) {
 792                 synchronized (images) {
 793                         Image image = images.get(imageId);
 794                         if (create && (image == null)) {
 795                                 image = new Image(imageId);
 796                                 images.put(imageId, image);
 797                         }
 798                         return image;
 799                 }
 800         }
 801
 802         /**
 803          * Returns the temporary image with the given ID.
 804          *
 805          * @param imageId
 806          *            The ID of the temporary image
 807          * @return The temporary image, or {@code null} if there is no temporary
 808          *         image with the given ID
 809          */
 810         public TemporaryImage getTemporaryImage(String imageId) {
 811                 synchronized (temporaryImages) {
 812                         return temporaryImages.get(imageId);
 813                 }
 814         }
 815
 816         //
 817         // ACTIONS
 818         //
 819
 820         /**
 821          * Locks the given Sone. A locked Sone will not be inserted by
 822          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 823          * again.
 824          *
 825          * @param sone
 826          *            The sone to lock
 827          */
 828         public void lockSone(Sone sone) {
 829                 synchronized (lockedSones) {
 830                         if (lockedSones.add(sone)) {
 831                                 coreListenerManager.fireSoneLocked(sone);
 832                         }
 833                 }
 834         }
 835
 836         /**
 837          * Unlocks the given Sone.
 838          *
 839          * @see #lockSone(Sone)
 840          * @param sone
 841          *            The sone to unlock
 842          */
 843         public void unlockSone(Sone sone) {
 844                 synchronized (lockedSones) {
 845                         if (lockedSones.remove(sone)) {
 846                                 coreListenerManager.fireSoneUnlocked(sone);
 847                         }
 848                 }
 849         }
 850
 851         /**
 852          * Adds a local Sone from the given own identity.
 853          *
 854          * @param ownIdentity
 855          *            The own identity to create a Sone from
 856          * @return The added (or already existing) Sone
 857          */
 858         public Sone addLocalSone(OwnIdentity ownIdentity) {
 859                 if (ownIdentity == null) {
 860                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 861                         return null;
 862                 }
 863                 synchronized (localSones) {
 864                         final Sone sone;
 865                         try {
 866                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 867                         } catch (MalformedURLException mue1) {
 868                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 869                                 return null;
 870                         }
 871                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 872                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 873                         sone.setKnown(true);
 874                         /* TODO - load posts ’n stuff */
 875                         localSones.put(ownIdentity.getId(), sone);
 876                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 877                         soneInserter.addSoneInsertListener(this);
 878                         soneInserters.put(sone, soneInserter);
 879                         sone.setStatus(SoneStatus.idle);
 880                         loadSone(sone);
 881                         soneInserter.start();
 882                         return sone;
 883                 }
 884         }
 885
 886         /**
 887          * Creates a new Sone for the given own identity.
 888          *
 889          * @param ownIdentity
 890          *            The own identity to create a Sone for
 891          * @return The created Sone
 892          */
 893         public Sone createSone(OwnIdentity ownIdentity) {
 894                 try {
 895                         ownIdentity.addContext("Sone");
 896                 } catch (WebOfTrustException wote1) {
 897                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity), wote1);
 898                         return null;
 899                 }
 900                 Sone sone = addLocalSone(ownIdentity);
 901                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 902                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 903                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 904                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 905                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 906                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 907
 908                 followSone(sone, getSone("nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI"));
 909                 touchConfiguration();
 910                 return sone;
 911         }
 912
 913         /**
 914          * Adds the Sone of the given identity.
 915          *
 916          * @param identity
 917          *            The identity whose Sone to add
 918          * @return The added or already existing Sone
 919          */
 920         public Sone addRemoteSone(Identity identity) {
 921                 if (identity == null) {
 922                         logger.log(Level.WARNING, "Given Identity is null!");
 923                         return null;
 924                 }
 925                 synchronized (remoteSones) {
 926                         final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
 927                         boolean newSone = sone.getRequestUri() == null;
 928                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 929                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 930                         if (newSone) {
 931                                 synchronized (knownSones) {
 932                                         newSone = !knownSones.contains(sone.getId());
 933                                 }
 934                                 sone.setKnown(!newSone);
 935                                 if (newSone) {
 936                                         coreListenerManager.fireNewSoneFound(sone);
 937                                         for (Sone localSone : getLocalSones()) {
 938                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 939                                                         followSone(localSone, sone);
 940                                                 }
 941                                         }
 942                                 }
 943                         }
 944                         soneDownloader.addSone(sone);
 945                         soneDownloaders.execute(new Runnable() {
 946
 947                                 @Override
 948                                 @SuppressWarnings("synthetic-access")
 949                                 public void run() {
 950                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 951                                 }
 952
 953                         });
 954                         return sone;
 955                 }
 956         }
 957
 958         /**
 959          * Lets the given local Sone follow the Sone with the given ID.
 960          *
 961          * @param sone
 962          *            The local Sone that should follow another Sone
 963          * @param soneId
 964          *            The ID of the Sone to follow
 965          */
 966         public void followSone(Sone sone, String soneId) {
 967                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
 968                 Sone followedSone = getSone(soneId, true);
 969                 if (followedSone == null) {
 970                         logger.log(Level.INFO, String.format("Ignored Sone with invalid ID: %s", soneId));
 971                         return;
 972                 }
 973                 followSone(sone, getSone(soneId));
 974         }
 975
 976         /**
 977          * Lets the given local Sone follow the other given Sone. If the given Sone
 978          * was not followed by any local Sone before, this will mark all elements of
 979          * the followed Sone as read that have been created before the current
 980          * moment.
 981          *
 982          * @param sone
 983          *            The local Sone that should follow the other Sone
 984          * @param followedSone
 985          *            The Sone that should be followed
 986          */
 987         public void followSone(Sone sone, Sone followedSone) {
 988                 Validation.begin().isNotNull("Sone", sone).isNotNull("Followed Sone", followedSone).check();
 989                 sone.addFriend(followedSone.getId());
 990                 synchronized (soneFollowingTimes) {
 991                         if (!soneFollowingTimes.containsKey(followedSone)) {
 992                                 long now = System.currentTimeMillis();
 993                                 soneFollowingTimes.put(followedSone, now);
 994                                 for (Post post : followedSone.getPosts()) {
 995                                         if (post.getTime() < now) {
 996                                                 markPostKnown(post);
 997                                         }
 998                                 }
 999                                 for (PostReply reply : followedSone.getReplies()) {
1000                                         if (reply.getTime() < now) {
1001                                                 markReplyKnown(reply);
1002                                         }
1003                                 }
1004                         }
1005                 }
1006                 touchConfiguration();
1007         }
1008
1009         /**
1010          * Lets the given local Sone unfollow the Sone with the given ID.
1011          *
1012          * @param sone
1013          *            The local Sone that should unfollow another Sone
1014          * @param soneId
1015          *            The ID of the Sone being unfollowed
1016          */
1017         public void unfollowSone(Sone sone, String soneId) {
1018                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
1019                 unfollowSone(sone, getSone(soneId, false));
1020         }
1021
1022         /**
1023          * Lets the given local Sone unfollow the other given Sone. If the given
1024          * local Sone is the last local Sone that followed the given Sone, its
1025          * following time will be removed.
1026          *
1027          * @param sone
1028          *            The local Sone that should unfollow another Sone
1029          * @param unfollowedSone
1030          *            The Sone being unfollowed
1031          */
1032         public void unfollowSone(Sone sone, Sone unfollowedSone) {
1033                 Validation.begin().isNotNull("Sone", sone).isNotNull("Unfollowed Sone", unfollowedSone).check();
1034                 sone.removeFriend(unfollowedSone.getId());
1035                 boolean unfollowedSoneStillFollowed = false;
1036                 for (Sone localSone : getLocalSones()) {
1037                         unfollowedSoneStillFollowed |= localSone.hasFriend(unfollowedSone.getId());
1038                 }
1039                 if (!unfollowedSoneStillFollowed) {
1040                         synchronized (soneFollowingTimes) {
1041                                 soneFollowingTimes.remove(unfollowedSone);
1042                         }
1043                 }
1044                 touchConfiguration();
1045         }
1046
1047         /**
1048          * Retrieves the trust relationship from the origin to the target. If the
1049          * trust relationship can not be retrieved, {@code null} is returned.
1050          *
1051          * @see Identity#getTrust(OwnIdentity)
1052          * @param origin
1053          *            The origin of the trust tree
1054          * @param target
1055          *            The target of the trust
1056          * @return The trust relationship
1057          */
1058         public Trust getTrust(Sone origin, Sone target) {
1059                 if (!isLocalSone(origin)) {
1060                         logger.log(Level.WARNING, String.format("Tried to get trust from remote Sone: %s", origin));
1061                         return null;
1062                 }
1063                 webOfTrustUpdater.getTrust((OwnIdentity) origin.getIdentity(), target.getIdentity());
1064                 return target.getIdentity().getTrust((OwnIdentity) origin.getIdentity());
1065         }
1066
1067         /**
1068          * Sets the trust value of the given origin Sone for the target Sone.
1069          *
1070          * @param origin
1071          *            The origin Sone
1072          * @param target
1073          *            The target Sone
1074          * @param trustValue
1075          *            The trust value (from {@code -100} to {@code 100})
1076          */
1077         public void setTrust(Sone origin, Sone target, int trustValue) {
1078                 Validation.begin().isNotNull("Trust Origin", origin).check().isInstanceOf("Trust Origin", origin.getIdentity(), OwnIdentity.class).isNotNull("Trust Target", target).isLessOrEqual("Trust Value", trustValue, 100).isGreaterOrEqual("Trust Value", trustValue, -100).check();
1079                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
1080         }
1081
1082         /**
1083          * Removes any trust assignment for the given target Sone.
1084          *
1085          * @param origin
1086          *            The trust origin
1087          * @param target
1088          *            The trust target
1089          */
1090         public void removeTrust(Sone origin, Sone target) {
1091                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
1092                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
1093         }
1094
1095         /**
1096          * Assigns the configured positive trust value for the given target.
1097          *
1098          * @param origin
1099          *            The trust origin
1100          * @param target
1101          *            The trust target
1102          */
1103         public void trustSone(Sone origin, Sone target) {
1104                 setTrust(origin, target, preferences.getPositiveTrust());
1105         }
1106
1107         /**
1108          * Assigns the configured negative trust value for the given target.
1109          *
1110          * @param origin
1111          *            The trust origin
1112          * @param target
1113          *            The trust target
1114          */
1115         public void distrustSone(Sone origin, Sone target) {
1116                 setTrust(origin, target, preferences.getNegativeTrust());
1117         }
1118
1119         /**
1120          * Removes the trust assignment for the given target.
1121          *
1122          * @param origin
1123          *            The trust origin
1124          * @param target
1125          *            The trust target
1126          */
1127         public void untrustSone(Sone origin, Sone target) {
1128                 removeTrust(origin, target);
1129         }
1130
1131         /**
1132          * Updates the stored Sone with the given Sone.
1133          *
1134          * @param sone
1135          *            The updated Sone
1136          */
1137         public void updateSone(Sone sone) {
1138                 updateSone(sone, false);
1139         }
1140
1141         /**
1142          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
1143          * {@code true}, an older Sone than the current Sone can be given to restore
1144          * an old state.
1145          *
1146          * @param sone
1147          *            The Sone to update
1148          * @param soneRescueMode
1149          *            {@code true} if the stored Sone should be updated regardless
1150          *            of the age of the given Sone
1151          */
1152         public void updateSone(Sone sone, boolean soneRescueMode) {
1153                 if (hasSone(sone.getId())) {
1154                         Sone storedSone = getSone(sone.getId());
1155                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1156                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
1157                                 return;
1158                         }
1159                         synchronized (posts) {
1160                                 if (!soneRescueMode) {
1161                                         for (Post post : storedSone.getPosts()) {
1162                                                 posts.remove(post.getId());
1163                                                 if (!sone.getPosts().contains(post)) {
1164                                                         coreListenerManager.firePostRemoved(post);
1165                                                 }
1166                                         }
1167                                 }
1168                                 List<Post> storedPosts = storedSone.getPosts();
1169                                 synchronized (knownPosts) {
1170                                         for (Post post : sone.getPosts()) {
1171                                                 post.setSone(storedSone).setKnown(knownPosts.contains(post.getId()));
1172                                                 if (!storedPosts.contains(post)) {
1173                                                         if (post.getTime() < getSoneFollowingTime(sone)) {
1174                                                                 knownPosts.add(post.getId());
1175                                                         } else if (!knownPosts.contains(post.getId())) {
1176                                                                 sone.setKnown(false);
1177                                                                 coreListenerManager.fireNewPostFound(post);
1178                                                         }
1179                                                 }
1180                                                 posts.put(post.getId(), post);
1181                                         }
1182                                 }
1183                         }
1184                         synchronized (replies) {
1185                                 if (!soneRescueMode) {
1186                                         for (PostReply reply : storedSone.getReplies()) {
1187                                                 replies.remove(reply.getId());
1188                                                 if (!sone.getReplies().contains(reply)) {
1189                                                         coreListenerManager.fireReplyRemoved(reply);
1190                                                 }
1191                                         }
1192                                 }
1193                                 Set<PostReply> storedReplies = storedSone.getReplies();
1194                                 synchronized (knownReplies) {
1195                                         for (PostReply reply : sone.getReplies()) {
1196                                                 reply.setSone(storedSone).setKnown(knownReplies.contains(reply.getId()));
1197                                                 if (!storedReplies.contains(reply)) {
1198                                                         if (reply.getTime() < getSoneFollowingTime(sone)) {
1199                                                                 knownReplies.add(reply.getId());
1200                                                         } else if (!knownReplies.contains(reply.getId())) {
1201                                                                 reply.setKnown(false);
1202                                                                 coreListenerManager.fireNewReplyFound(reply);
1203                                                         }
1204                                                 }
1205                                                 replies.put(reply.getId(), reply);
1206                                         }
1207                                 }
1208                         }
1209                         synchronized (albums) {
1210                                 synchronized (images) {
1211                                         for (Album album : storedSone.getAlbums()) {
1212                                                 albums.remove(album.getId());
1213                                                 for (Image image : album.getImages()) {
1214                                                         images.remove(image.getId());
1215                                                 }
1216                                         }
1217                                         for (Album album : sone.getAlbums()) {
1218                                                 albums.put(album.getId(), album);
1219                                                 for (Image image : album.getImages()) {
1220                                                         images.put(image.getId(), image);
1221                                                 }
1222                                         }
1223                                 }
1224                         }
1225                         synchronized (storedSone) {
1226                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1227                                         storedSone.setTime(sone.getTime());
1228                                 }
1229                                 storedSone.setClient(sone.getClient());
1230                                 storedSone.setProfile(sone.getProfile());
1231                                 if (soneRescueMode) {
1232                                         for (Post post : sone.getPosts()) {
1233                                                 storedSone.addPost(post);
1234                                         }
1235                                         for (PostReply reply : sone.getReplies()) {
1236                                                 storedSone.addReply(reply);
1237                                         }
1238                                         for (String likedPostId : sone.getLikedPostIds()) {
1239                                                 storedSone.addLikedPostId(likedPostId);
1240                                         }
1241                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1242                                                 storedSone.addLikedReplyId(likedReplyId);
1243                                         }
1244                                         for (Album album : sone.getAlbums()) {
1245                                                 storedSone.addAlbum(album);
1246                                         }
1247                                 } else {
1248                                         storedSone.setPosts(sone.getPosts());
1249                                         storedSone.setReplies(sone.getReplies());
1250                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1251                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1252                                         storedSone.setAlbums(sone.getAlbums());
1253                                 }
1254                                 storedSone.setLatestEdition(sone.getLatestEdition());
1255                         }
1256                 }
1257         }
1258
1259         /**
1260          * Deletes the given Sone. This will remove the Sone from the
1261          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
1262          * and remove the context from its identity.
1263          *
1264          * @param sone
1265          *            The Sone to delete
1266          */
1267         public void deleteSone(Sone sone) {
1268                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1269                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1270                         return;
1271                 }
1272                 synchronized (localSones) {
1273                         if (!localSones.containsKey(sone.getId())) {
1274                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1275                                 return;
1276                         }
1277                         localSones.remove(sone.getId());
1278                         SoneInserter soneInserter = soneInserters.remove(sone);
1279                         soneInserter.removeSoneInsertListener(this);
1280                         soneInserter.stop();
1281                 }
1282                 try {
1283                         ((OwnIdentity) sone.getIdentity()).removeContext("Sone");
1284                         ((OwnIdentity) sone.getIdentity()).removeProperty("Sone.LatestEdition");
1285                 } catch (WebOfTrustException wote1) {
1286                         logger.log(Level.WARNING, String.format("Could not remove context and properties from Sone: %s", sone), wote1);
1287                 }
1288                 try {
1289                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1290                 } catch (ConfigurationException ce1) {
1291                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1292                 }
1293         }
1294
1295         /**
1296          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1297          * known} before, a {@link CoreListener#markSoneKnown(Sone)} event is fired.
1298          *
1299          * @param sone
1300          *            The Sone to mark as known
1301          */
1302         public void markSoneKnown(Sone sone) {
1303                 if (!sone.isKnown()) {
1304                         sone.setKnown(true);
1305                         synchronized (knownSones) {
1306                                 knownSones.add(sone.getId());
1307                         }
1308                         coreListenerManager.fireMarkSoneKnown(sone);
1309                         touchConfiguration();
1310                 }
1311         }
1312
1313         /**
1314          * Loads and updates the given Sone from the configuration. If any error is
1315          * encountered, loading is aborted and the given Sone is not changed.
1316          *
1317          * @param sone
1318          *            The Sone to load and update
1319          */
1320         public void loadSone(Sone sone) {
1321                 if (!isLocalSone(sone)) {
1322                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1323                         return;
1324                 }
1325
1326                 /* initialize options. */
1327                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1328                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1329                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1330                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1331                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1332                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1333
1334                 /* load Sone. */
1335                 String sonePrefix = "Sone/" + sone.getId();
1336                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1337                 if (soneTime == null) {
1338                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1339                         return;
1340                 }
1341                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1342
1343                 /* load profile. */
1344                 Profile profile = new Profile(sone);
1345                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1346                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1347                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1348                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1349                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1350                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1351
1352                 /* load profile fields. */
1353                 while (true) {
1354                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1355                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1356                         if (fieldName == null) {
1357                                 break;
1358                         }
1359                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1360                         profile.addField(fieldName).setValue(fieldValue);
1361                 }
1362
1363                 /* load posts. */
1364                 Set<Post> posts = new HashSet<Post>();
1365                 while (true) {
1366                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1367                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1368                         if (postId == null) {
1369                                 break;
1370                         }
1371                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1372                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1373                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1374                         if ((postTime == 0) || (postText == null)) {
1375                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1376                                 return;
1377                         }
1378                         Post post = getPost(postId).setSone(sone).setTime(postTime).setText(postText);
1379                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1380                                 post.setRecipient(getSone(postRecipientId));
1381                         }
1382                         posts.add(post);
1383                 }
1384
1385                 /* load replies. */
1386                 Set<PostReply> replies = new HashSet<PostReply>();
1387                 while (true) {
1388                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1389                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1390                         if (replyId == null) {
1391                                 break;
1392                         }
1393                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1394                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1395                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1396                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1397                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1398                                 return;
1399                         }
1400                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
1401                 }
1402
1403                 /* load post likes. */
1404                 Set<String> likedPostIds = new HashSet<String>();
1405                 while (true) {
1406                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1407                         if (likedPostId == null) {
1408                                 break;
1409                         }
1410                         likedPostIds.add(likedPostId);
1411                 }
1412
1413                 /* load reply likes. */
1414                 Set<String> likedReplyIds = new HashSet<String>();
1415                 while (true) {
1416                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1417                         if (likedReplyId == null) {
1418                                 break;
1419                         }
1420                         likedReplyIds.add(likedReplyId);
1421                 }
1422
1423                 /* load friends. */
1424                 Set<String> friends = new HashSet<String>();
1425                 while (true) {
1426                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1427                         if (friendId == null) {
1428                                 break;
1429                         }
1430                         friends.add(friendId);
1431                 }
1432
1433                 /* load albums. */
1434                 List<Album> topLevelAlbums = new ArrayList<Album>();
1435                 int albumCounter = 0;
1436                 while (true) {
1437                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1438                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1439                         if (albumId == null) {
1440                                 break;
1441                         }
1442                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1443                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1444                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1445                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1446                         if ((albumTitle == null) || (albumDescription == null)) {
1447                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1448                                 return;
1449                         }
1450                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1451                         if (albumParentId != null) {
1452                                 Album parentAlbum = getAlbum(albumParentId, false);
1453                                 if (parentAlbum == null) {
1454                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1455                                         return;
1456                                 }
1457                                 parentAlbum.addAlbum(album);
1458                         } else {
1459                                 if (!topLevelAlbums.contains(album)) {
1460                                         topLevelAlbums.add(album);
1461                                 }
1462                         }
1463                 }
1464
1465                 /* load images. */
1466                 int imageCounter = 0;
1467                 while (true) {
1468                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1469                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1470                         if (imageId == null) {
1471                                 break;
1472                         }
1473                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1474                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1475                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1476                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1477                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1478                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1479                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1480                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1481                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1482                                 return;
1483                         }
1484                         Album album = getAlbum(albumId, false);
1485                         if (album == null) {
1486                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1487                                 return;
1488                         }
1489                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1490                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1491                         album.addImage(image);
1492                 }
1493
1494                 /* load avatar. */
1495                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1496                 if (avatarId != null) {
1497                         profile.setAvatar(getImage(avatarId, false));
1498                 }
1499
1500                 /* load options. */
1501                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1502                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1503                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1504                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1505                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1506                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1507
1508                 /* if we’re still here, Sone was loaded successfully. */
1509                 synchronized (sone) {
1510                         sone.setTime(soneTime);
1511                         sone.setProfile(profile);
1512                         sone.setPosts(posts);
1513                         sone.setReplies(replies);
1514                         sone.setLikePostIds(likedPostIds);
1515                         sone.setLikeReplyIds(likedReplyIds);
1516                         for (String friendId : friends) {
1517                                 followSone(sone, friendId);
1518                         }
1519                         sone.setAlbums(topLevelAlbums);
1520                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1521                 }
1522                 synchronized (knownSones) {
1523                         for (String friend : friends) {
1524                                 knownSones.add(friend);
1525                         }
1526                 }
1527                 synchronized (knownPosts) {
1528                         for (Post post : posts) {
1529                                 knownPosts.add(post.getId());
1530                         }
1531                 }
1532                 synchronized (knownReplies) {
1533                         for (PostReply reply : replies) {
1534                                 knownReplies.add(reply.getId());
1535                         }
1536                 }
1537         }
1538
1539         /**
1540          * Creates a new post.
1541          *
1542          * @param sone
1543          *            The Sone that creates the post
1544          * @param text
1545          *            The text of the post
1546          * @return The created post
1547          */
1548         public Post createPost(Sone sone, String text) {
1549                 return createPost(sone, System.currentTimeMillis(), text);
1550         }
1551
1552         /**
1553          * Creates a new post.
1554          *
1555          * @param sone
1556          *            The Sone that creates the post
1557          * @param time
1558          *            The time of the post
1559          * @param text
1560          *            The text of the post
1561          * @return The created post
1562          */
1563         public Post createPost(Sone sone, long time, String text) {
1564                 return createPost(sone, null, time, text);
1565         }
1566
1567         /**
1568          * Creates a new post.
1569          *
1570          * @param sone
1571          *            The Sone that creates the post
1572          * @param recipient
1573          *            The recipient Sone, or {@code null} if this post does not have
1574          *            a recipient
1575          * @param text
1576          *            The text of the post
1577          * @return The created post
1578          */
1579         public Post createPost(Sone sone, Sone recipient, String text) {
1580                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1581         }
1582
1583         /**
1584          * Creates a new post.
1585          *
1586          * @param sone
1587          *            The Sone that creates the post
1588          * @param recipient
1589          *            The recipient Sone, or {@code null} if this post does not have
1590          *            a recipient
1591          * @param time
1592          *            The time of the post
1593          * @param text
1594          *            The text of the post
1595          * @return The created post
1596          */
1597         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1598                 if (!isLocalSone(sone)) {
1599                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1600                         return null;
1601                 }
1602                 final Post post = new PostImpl(sone, time, text);
1603                 if (recipient != null) {
1604                         post.setRecipient(recipient);
1605                 }
1606                 synchronized (posts) {
1607                         posts.put(post.getId(), post);
1608                 }
1609                 coreListenerManager.fireNewPostFound(post);
1610                 sone.addPost(post);
1611                 touchConfiguration();
1612                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1613
1614                         /**
1615                          * {@inheritDoc}
1616                          */
1617                         @Override
1618                         public void run() {
1619                                 markPostKnown(post);
1620                         }
1621                 }, "Mark " + post + " read.");
1622                 return post;
1623         }
1624
1625         /**
1626          * Deletes the given post.
1627          *
1628          * @param post
1629          *            The post to delete
1630          */
1631         public void deletePost(Post post) {
1632                 if (!isLocalSone(post.getSone())) {
1633                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1634                         return;
1635                 }
1636                 post.getSone().removePost(post);
1637                 synchronized (posts) {
1638                         posts.remove(post.getId());
1639                 }
1640                 coreListenerManager.firePostRemoved(post);
1641                 markPostKnown(post);
1642                 touchConfiguration();
1643         }
1644
1645         /**
1646          * Marks the given post as known, if it is currently not a known post
1647          * (according to {@link Post#isKnown()}).
1648          *
1649          * @param post
1650          *            The post to mark as known
1651          */
1652         public void markPostKnown(Post post) {
1653                 post.setKnown(true);
1654                 synchronized (knownPosts) {
1655                         coreListenerManager.fireMarkPostKnown(post);
1656                         if (knownPosts.add(post.getId())) {
1657                                 touchConfiguration();
1658                         }
1659                 }
1660                 for (PostReply reply : getReplies(post)) {
1661                         markReplyKnown(reply);
1662                 }
1663         }
1664
1665         /**
1666          * Bookmarks the given post.
1667          *
1668          * @param post
1669          *            The post to bookmark
1670          */
1671         public void bookmark(Post post) {
1672                 bookmarkPost(post.getId());
1673         }
1674
1675         /**
1676          * Bookmarks the post with the given ID.
1677          *
1678          * @param id
1679          *            The ID of the post to bookmark
1680          */
1681         public void bookmarkPost(String id) {
1682                 synchronized (bookmarkedPosts) {
1683                         bookmarkedPosts.add(id);
1684                 }
1685         }
1686
1687         /**
1688          * Removes the given post from the bookmarks.
1689          *
1690          * @param post
1691          *            The post to unbookmark
1692          */
1693         public void unbookmark(Post post) {
1694                 unbookmarkPost(post.getId());
1695         }
1696
1697         /**
1698          * Removes the post with the given ID from the bookmarks.
1699          *
1700          * @param id
1701          *            The ID of the post to unbookmark
1702          */
1703         public void unbookmarkPost(String id) {
1704                 synchronized (bookmarkedPosts) {
1705                         bookmarkedPosts.remove(id);
1706                 }
1707         }
1708
1709         /**
1710          * Creates a new reply.
1711          *
1712          * @param sone
1713          *            The Sone that creates the reply
1714          * @param post
1715          *            The post that this reply refers to
1716          * @param text
1717          *            The text of the reply
1718          * @return The created reply
1719          */
1720         public PostReply createReply(Sone sone, Post post, String text) {
1721                 return createReply(sone, post, System.currentTimeMillis(), text);
1722         }
1723
1724         /**
1725          * Creates a new reply.
1726          *
1727          * @param sone
1728          *            The Sone that creates the reply
1729          * @param post
1730          *            The post that this reply refers to
1731          * @param time
1732          *            The time of the reply
1733          * @param text
1734          *            The text of the reply
1735          * @return The created reply
1736          */
1737         public PostReply createReply(Sone sone, Post post, long time, String text) {
1738                 if (!isLocalSone(sone)) {
1739                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1740                         return null;
1741                 }
1742                 final PostReply reply = new PostReply(sone, post, System.currentTimeMillis(), text);
1743                 synchronized (replies) {
1744                         replies.put(reply.getId(), reply);
1745                 }
1746                 synchronized (knownReplies) {
1747                         coreListenerManager.fireNewReplyFound(reply);
1748                 }
1749                 sone.addReply(reply);
1750                 touchConfiguration();
1751                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1752
1753                         /**
1754                          * {@inheritDoc}
1755                          */
1756                         @Override
1757                         public void run() {
1758                                 markReplyKnown(reply);
1759                         }
1760                 }, "Mark " + reply + " read.");
1761                 return reply;
1762         }
1763
1764         /**
1765          * Deletes the given reply.
1766          *
1767          * @param reply
1768          *            The reply to delete
1769          */
1770         public void deleteReply(PostReply reply) {
1771                 Sone sone = reply.getSone();
1772                 if (!isLocalSone(sone)) {
1773                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1774                         return;
1775                 }
1776                 synchronized (replies) {
1777                         replies.remove(reply.getId());
1778                 }
1779                 synchronized (knownReplies) {
1780                         markReplyKnown(reply);
1781                         knownReplies.remove(reply.getId());
1782                 }
1783                 sone.removeReply(reply);
1784                 touchConfiguration();
1785         }
1786
1787         /**
1788          * Marks the given reply as known, if it is currently not a known reply
1789          * (according to {@link Reply#isKnown()}).
1790          *
1791          * @param reply
1792          *            The reply to mark as known
1793          */
1794         public void markReplyKnown(PostReply reply) {
1795                 reply.setKnown(true);
1796                 synchronized (knownReplies) {
1797                         coreListenerManager.fireMarkReplyKnown(reply);
1798                         if (knownReplies.add(reply.getId())) {
1799                                 touchConfiguration();
1800                         }
1801                 }
1802         }
1803
1804         /**
1805          * Creates a new top-level album for the given Sone.
1806          *
1807          * @param sone
1808          *            The Sone to create the album for
1809          * @return The new album
1810          */
1811         public Album createAlbum(Sone sone) {
1812                 return createAlbum(sone, null);
1813         }
1814
1815         /**
1816          * Creates a new album for the given Sone.
1817          *
1818          * @param sone
1819          *            The Sone to create the album for
1820          * @param parent
1821          *            The parent of the album (may be {@code null} to create a
1822          *            top-level album)
1823          * @return The new album
1824          */
1825         public Album createAlbum(Sone sone, Album parent) {
1826                 Album album = new Album();
1827                 synchronized (albums) {
1828                         albums.put(album.getId(), album);
1829                 }
1830                 album.setSone(sone);
1831                 if (parent != null) {
1832                         parent.addAlbum(album);
1833                 } else {
1834                         sone.addAlbum(album);
1835                 }
1836                 return album;
1837         }
1838
1839         /**
1840          * Deletes the given album. The owner of the album has to be a local Sone,
1841          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1842          *
1843          * @param album
1844          *            The album to remove
1845          */
1846         public void deleteAlbum(Album album) {
1847                 Validation.begin().isNotNull("Album", album).check().is("Local Sone", isLocalSone(album.getSone())).check();
1848                 if (!album.isEmpty()) {
1849                         return;
1850                 }
1851                 if (album.getParent() == null) {
1852                         album.getSone().removeAlbum(album);
1853                 } else {
1854                         album.getParent().removeAlbum(album);
1855                 }
1856                 synchronized (albums) {
1857                         albums.remove(album.getId());
1858                 }
1859                 saveSone(album.getSone());
1860         }
1861
1862         /**
1863          * Creates a new image.
1864          *
1865          * @param sone
1866          *            The Sone creating the image
1867          * @param album
1868          *            The album the image will be inserted into
1869          * @param temporaryImage
1870          *            The temporary image to create the image from
1871          * @return The newly created image
1872          */
1873         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1874                 Validation.begin().isNotNull("Sone", sone).isNotNull("Album", album).isNotNull("Temporary Image", temporaryImage).check().is("Local Sone", isLocalSone(sone)).check().isEqual("Owner and Album Owner", sone, album.getSone()).check();
1875                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1876                 album.addImage(image);
1877                 synchronized (images) {
1878                         images.put(image.getId(), image);
1879                 }
1880                 imageInserter.insertImage(temporaryImage, image);
1881                 return image;
1882         }
1883
1884         /**
1885          * Deletes the given image. This method will also delete a matching
1886          * temporary image.
1887          *
1888          * @see #deleteTemporaryImage(TemporaryImage)
1889          * @param image
1890          *            The image to delete
1891          */
1892         public void deleteImage(Image image) {
1893                 Validation.begin().isNotNull("Image", image).check().is("Local Sone", isLocalSone(image.getSone())).check();
1894                 deleteTemporaryImage(image.getId());
1895                 image.getAlbum().removeImage(image);
1896                 synchronized (images) {
1897                         images.remove(image.getId());
1898                 }
1899                 saveSone(image.getSone());
1900         }
1901
1902         /**
1903          * Creates a new temporary image.
1904          *
1905          * @param mimeType
1906          *            The MIME type of the temporary image
1907          * @param imageData
1908          *            The encoded data of the image
1909          * @return The temporary image
1910          */
1911         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1912                 TemporaryImage temporaryImage = new TemporaryImage();
1913                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1914                 synchronized (temporaryImages) {
1915                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1916                 }
1917                 return temporaryImage;
1918         }
1919
1920         /**
1921          * Deletes the given temporary image.
1922          *
1923          * @param temporaryImage
1924          *            The temporary image to delete
1925          */
1926         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1927                 Validation.begin().isNotNull("Temporary Image", temporaryImage).check();
1928                 deleteTemporaryImage(temporaryImage.getId());
1929         }
1930
1931         /**
1932          * Deletes the temporary image with the given ID.
1933          *
1934          * @param imageId
1935          *            The ID of the temporary image to delete
1936          */
1937         public void deleteTemporaryImage(String imageId) {
1938                 Validation.begin().isNotNull("Temporary Image ID", imageId).check();
1939                 synchronized (temporaryImages) {
1940                         temporaryImages.remove(imageId);
1941                 }
1942                 Image image = getImage(imageId, false);
1943                 if (image != null) {
1944                         imageInserter.cancelImageInsert(image);
1945                 }
1946         }
1947
1948         /**
1949          * Notifies the core that the configuration, either of the core or of a
1950          * single local Sone, has changed, and that the configuration should be
1951          * saved.
1952          */
1953         public void touchConfiguration() {
1954                 lastConfigurationUpdate = System.currentTimeMillis();
1955         }
1956
1957         //
1958         // SERVICE METHODS
1959         //
1960
1961         /**
1962          * Starts the core.
1963          */
1964         @Override
1965         public void serviceStart() {
1966                 loadConfiguration();
1967                 updateChecker.addUpdateListener(this);
1968                 updateChecker.start();
1969                 webOfTrustUpdater.start();
1970         }
1971
1972         /**
1973          * {@inheritDoc}
1974          */
1975         @Override
1976         public void serviceRun() {
1977                 long lastSaved = System.currentTimeMillis();
1978                 while (!shouldStop()) {
1979                         sleep(1000);
1980                         long now = System.currentTimeMillis();
1981                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1982                                 for (Sone localSone : getLocalSones()) {
1983                                         saveSone(localSone);
1984                                 }
1985                                 saveConfiguration();
1986                                 lastSaved = now;
1987                         }
1988                 }
1989         }
1990
1991         /**
1992          * Stops the core.
1993          */
1994         @Override
1995         public void serviceStop() {
1996                 synchronized (localSones) {
1997                         for (SoneInserter soneInserter : soneInserters.values()) {
1998                                 soneInserter.removeSoneInsertListener(this);
1999                                 soneInserter.stop();
2000                         }
2001                 }
2002                 webOfTrustUpdater.stop();
2003                 updateChecker.stop();
2004                 updateChecker.removeUpdateListener(this);
2005                 soneDownloader.stop();
2006         }
2007
2008         //
2009         // PRIVATE METHODS
2010         //
2011
2012         /**
2013          * Saves the given Sone. This will persist all local settings for the given
2014          * Sone, such as the friends list and similar, private options.
2015          *
2016          * @param sone
2017          *            The Sone to save
2018          */
2019         private synchronized void saveSone(Sone sone) {
2020                 if (!isLocalSone(sone)) {
2021                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
2022                         return;
2023                 }
2024                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
2025                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
2026                         return;
2027                 }
2028
2029                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
2030                 try {
2031                         /* save Sone into configuration. */
2032                         String sonePrefix = "Sone/" + sone.getId();
2033                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
2034                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
2035
2036                         /* save profile. */
2037                         Profile profile = sone.getProfile();
2038                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
2039                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
2040                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
2041                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
2042                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
2043                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
2044                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
2045
2046                         /* save profile fields. */
2047                         int fieldCounter = 0;
2048                         for (Field profileField : profile.getFields()) {
2049                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
2050                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
2051                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
2052                         }
2053                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
2054
2055                         /* save posts. */
2056                         int postCounter = 0;
2057                         for (Post post : sone.getPosts()) {
2058                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
2059                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
2060                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
2061                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
2062                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
2063                         }
2064                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
2065
2066                         /* save replies. */
2067                         int replyCounter = 0;
2068                         for (PostReply reply : sone.getReplies()) {
2069                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
2070                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
2071                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
2072                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
2073                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
2074                         }
2075                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
2076
2077                         /* save post likes. */
2078                         int postLikeCounter = 0;
2079                         for (String postId : sone.getLikedPostIds()) {
2080                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
2081                         }
2082                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
2083
2084                         /* save reply likes. */
2085                         int replyLikeCounter = 0;
2086                         for (String replyId : sone.getLikedReplyIds()) {
2087                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
2088                         }
2089                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
2090
2091                         /* save friends. */
2092                         int friendCounter = 0;
2093                         for (String friendId : sone.getFriends()) {
2094                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
2095                         }
2096                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
2097
2098                         /* save albums. first, collect in a flat structure, top-level first. */
2099                         List<Album> albums = sone.getAllAlbums();
2100
2101                         int albumCounter = 0;
2102                         for (Album album : albums) {
2103                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
2104                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
2105                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
2106                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
2107                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
2108                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
2109                         }
2110                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
2111
2112                         /* save images. */
2113                         int imageCounter = 0;
2114                         for (Album album : albums) {
2115                                 for (Image image : album.getImages()) {
2116                                         if (!image.isInserted()) {
2117                                                 continue;
2118                                         }
2119                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
2120                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
2121                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
2122                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
2123                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
2124                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
2125                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
2126                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
2127                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
2128                                 }
2129                         }
2130                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
2131
2132                         /* save options. */
2133                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
2134                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
2135                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
2136                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
2137                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
2138                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
2139
2140                         configuration.save();
2141
2142                         ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
2143
2144                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
2145                 } catch (ConfigurationException ce1) {
2146                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
2147                 } catch (WebOfTrustException wote1) {
2148                         logger.log(Level.WARNING, String.format("Could not set WoT property for Sone: %s", sone), wote1);
2149                 }
2150         }
2151
2152         /**
2153          * Saves the current options.
2154          */
2155         private void saveConfiguration() {
2156                 synchronized (configuration) {
2157                         if (storingConfiguration) {
2158                                 logger.log(Level.FINE, "Already storing configuration…");
2159                                 return;
2160                         }
2161                         storingConfiguration = true;
2162                 }
2163
2164                 /* store the options first. */
2165                 try {
2166                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
2167                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
2168                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
2169                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
2170                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
2171                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
2172                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
2173                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
2174                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
2175                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
2176                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
2177                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
2178
2179                         /* save known Sones. */
2180                         int soneCounter = 0;
2181                         synchronized (knownSones) {
2182                                 for (String knownSoneId : knownSones) {
2183                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
2184                                 }
2185                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
2186                         }
2187
2188                         /* save Sone following times. */
2189                         soneCounter = 0;
2190                         synchronized (soneFollowingTimes) {
2191                                 for (Entry<Sone, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
2192                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey().getId());
2193                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
2194                                         ++soneCounter;
2195                                 }
2196                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
2197                         }
2198
2199                         /* save known posts. */
2200                         int postCounter = 0;
2201                         synchronized (knownPosts) {
2202                                 for (String knownPostId : knownPosts) {
2203                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
2204                                 }
2205                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
2206                         }
2207
2208                         /* save known replies. */
2209                         int replyCounter = 0;
2210                         synchronized (knownReplies) {
2211                                 for (String knownReplyId : knownReplies) {
2212                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
2213                                 }
2214                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
2215                         }
2216
2217                         /* save bookmarked posts. */
2218                         int bookmarkedPostCounter = 0;
2219                         synchronized (bookmarkedPosts) {
2220                                 for (String bookmarkedPostId : bookmarkedPosts) {
2221                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
2222                                 }
2223                         }
2224                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
2225
2226                         /* now save it. */
2227                         configuration.save();
2228
2229                 } catch (ConfigurationException ce1) {
2230                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
2231                 } finally {
2232                         synchronized (configuration) {
2233                                 storingConfiguration = false;
2234                         }
2235                 }
2236         }
2237
2238         /**
2239          * Loads the configuration.
2240          */
2241         @SuppressWarnings("unchecked")
2242         private void loadConfiguration() {
2243                 /* create options. */
2244                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangeValidator(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2245
2246                         @Override
2247                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2248                                 SoneInserter.setInsertionDelay(newValue);
2249                         }
2250
2251                 }));
2252                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
2253                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
2254                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2255                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2256                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2257                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangeValidator(0, 100)));
2258                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangeValidator(-100, 100)));
2259                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2260                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2261
2262                         @Override
2263                         @SuppressWarnings("synthetic-access")
2264                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2265                                 fcpInterface.setActive(newValue);
2266                         }
2267                 }));
2268                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2269
2270                         @Override
2271                         @SuppressWarnings("synthetic-access")
2272                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2273                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2274                         }
2275
2276                 }));
2277
2278                 loadConfigurationValue("InsertionDelay");
2279                 loadConfigurationValue("PostsPerPage");
2280                 loadConfigurationValue("ImagesPerPage");
2281                 loadConfigurationValue("CharactersPerPost");
2282                 loadConfigurationValue("PostCutOffLength");
2283                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2284                 loadConfigurationValue("PositiveTrust");
2285                 loadConfigurationValue("NegativeTrust");
2286                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2287                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2288                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2289
2290                 /* load known Sones. */
2291                 int soneCounter = 0;
2292                 while (true) {
2293                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2294                         if (knownSoneId == null) {
2295                                 break;
2296                         }
2297                         synchronized (knownSones) {
2298                                 knownSones.add(knownSoneId);
2299                         }
2300                 }
2301
2302                 /* load Sone following times. */
2303                 soneCounter = 0;
2304                 while (true) {
2305                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2306                         if (soneId == null) {
2307                                 break;
2308                         }
2309                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2310                         Sone followedSone = getSone(soneId);
2311                         if (followedSone == null) {
2312                                 logger.log(Level.WARNING, String.format("Ignoring Sone with invalid ID: %s", soneId));
2313                         } else {
2314                                 synchronized (soneFollowingTimes) {
2315                                         soneFollowingTimes.put(getSone(soneId), time);
2316                                 }
2317                         }
2318                         ++soneCounter;
2319                 }
2320
2321                 /* load known posts. */
2322                 int postCounter = 0;
2323                 while (true) {
2324                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
2325                         if (knownPostId == null) {
2326                                 break;
2327                         }
2328                         synchronized (knownPosts) {
2329                                 knownPosts.add(knownPostId);
2330                         }
2331                 }
2332
2333                 /* load known replies. */
2334                 int replyCounter = 0;
2335                 while (true) {
2336                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
2337                         if (knownReplyId == null) {
2338                                 break;
2339                         }
2340                         synchronized (knownReplies) {
2341                                 knownReplies.add(knownReplyId);
2342                         }
2343                 }
2344
2345                 /* load bookmarked posts. */
2346                 int bookmarkedPostCounter = 0;
2347                 while (true) {
2348                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2349                         if (bookmarkedPostId == null) {
2350                                 break;
2351                         }
2352                         synchronized (bookmarkedPosts) {
2353                                 bookmarkedPosts.add(bookmarkedPostId);
2354                         }
2355                 }
2356
2357         }
2358
2359         /**
2360          * Loads an {@link Integer} configuration value for the option with the
2361          * given name, logging validation failures.
2362          *
2363          * @param optionName
2364          *            The name of the option to load
2365          */
2366         private void loadConfigurationValue(String optionName) {
2367                 try {
2368                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2369                 } catch (IllegalArgumentException iae1) {
2370                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2371                 }
2372         }
2373
2374         /**
2375          * Generate a Sone URI from the given URI and latest edition.
2376          *
2377          * @param uriString
2378          *            The URI to derive the Sone URI from
2379          * @return The derived URI
2380          */
2381         private FreenetURI getSoneUri(String uriString) {
2382                 try {
2383                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
2384                         return uri;
2385                 } catch (MalformedURLException mue1) {
2386                         logger.log(Level.WARNING, String.format("Could not create Sone URI from URI: %s", uriString, mue1));
2387                         return null;
2388                 }
2389         }
2390
2391         //
2392         // INTERFACE IdentityListener
2393         //
2394
2395         /**
2396          * {@inheritDoc}
2397          */
2398         @Override
2399         public void ownIdentityAdded(OwnIdentity ownIdentity) {
2400                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2401                 if (ownIdentity.hasContext("Sone")) {
2402                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2403                         addLocalSone(ownIdentity);
2404                 }
2405         }
2406
2407         /**
2408          * {@inheritDoc}
2409          */
2410         @Override
2411         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
2412                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2413                 trustedIdentities.remove(ownIdentity);
2414         }
2415
2416         /**
2417          * {@inheritDoc}
2418          */
2419         @Override
2420         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
2421                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2422                 trustedIdentities.get(ownIdentity).add(identity);
2423                 addRemoteSone(identity);
2424         }
2425
2426         /**
2427          * {@inheritDoc}
2428          */
2429         @Override
2430         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
2431                 new Thread(new Runnable() {
2432
2433                         @Override
2434                         @SuppressWarnings("synthetic-access")
2435                         public void run() {
2436                                 Sone sone = getRemoteSone(identity.getId(), false);
2437                                 sone.setIdentity(identity);
2438                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2439                                 soneDownloader.addSone(sone);
2440                                 soneDownloader.fetchSone(sone);
2441                         }
2442                 }).start();
2443         }
2444
2445         /**
2446          * {@inheritDoc}
2447          */
2448         @Override
2449         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
2450                 trustedIdentities.get(ownIdentity).remove(identity);
2451                 boolean foundIdentity = false;
2452                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2453                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2454                                 continue;
2455                         }
2456                         if (trustedIdentity.getValue().contains(identity)) {
2457                                 foundIdentity = true;
2458                         }
2459                 }
2460                 if (foundIdentity) {
2461                         /* some local identity still trusts this identity, don’t remove. */
2462                         return;
2463                 }
2464                 Sone sone = getSone(identity.getId(), false);
2465                 if (sone == null) {
2466                         /* TODO - we don’t have the Sone anymore. should this happen? */
2467                         return;
2468                 }
2469                 synchronized (posts) {
2470                         synchronized (knownPosts) {
2471                                 for (Post post : sone.getPosts()) {
2472                                         posts.remove(post.getId());
2473                                         coreListenerManager.firePostRemoved(post);
2474                                 }
2475                         }
2476                 }
2477                 synchronized (replies) {
2478                         synchronized (knownReplies) {
2479                                 for (PostReply reply : sone.getReplies()) {
2480                                         replies.remove(reply.getId());
2481                                         coreListenerManager.fireReplyRemoved(reply);
2482                                 }
2483                         }
2484                 }
2485                 synchronized (remoteSones) {
2486                         remoteSones.remove(identity.getId());
2487                 }
2488                 coreListenerManager.fireSoneRemoved(sone);
2489         }
2490
2491         //
2492         // INTERFACE UpdateListener
2493         //
2494
2495         /**
2496          * {@inheritDoc}
2497          */
2498         @Override
2499         public void updateFound(Version version, long releaseTime, long latestEdition) {
2500                 coreListenerManager.fireUpdateFound(version, releaseTime, latestEdition);
2501         }
2502
2503         //
2504         // INTERFACE ImageInsertListener
2505         //
2506
2507         /**
2508          * {@inheritDoc}
2509          */
2510         @Override
2511         public void insertStarted(Sone sone) {
2512                 coreListenerManager.fireSoneInserting(sone);
2513         }
2514
2515         /**
2516          * {@inheritDoc}
2517          */
2518         @Override
2519         public void insertFinished(Sone sone, long insertDuration) {
2520                 coreListenerManager.fireSoneInserted(sone, insertDuration);
2521         }
2522
2523         /**
2524          * {@inheritDoc}
2525          */
2526         @Override
2527         public void insertAborted(Sone sone, Throwable cause) {
2528                 coreListenerManager.fireSoneInsertAborted(sone, cause);
2529         }
2530
2531         //
2532         // SONEINSERTLISTENER METHODS
2533         //
2534
2535         /**
2536          * {@inheritDoc}
2537          */
2538         @Override
2539         public void imageInsertStarted(Image image) {
2540                 logger.log(Level.WARNING, String.format("Image insert started for %s...", image));
2541                 coreListenerManager.fireImageInsertStarted(image);
2542         }
2543
2544         /**
2545          * {@inheritDoc}
2546          */
2547         @Override
2548         public void imageInsertAborted(Image image) {
2549                 logger.log(Level.WARNING, String.format("Image insert aborted for %s.", image));
2550                 coreListenerManager.fireImageInsertAborted(image);
2551         }
2552
2553         /**
2554          * {@inheritDoc}
2555          */
2556         @Override
2557         public void imageInsertFinished(Image image, FreenetURI key) {
2558                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", image, key));
2559                 image.setKey(key.toString());
2560                 deleteTemporaryImage(image.getId());
2561                 saveSone(image.getSone());
2562                 coreListenerManager.fireImageInsertFinished(image);
2563         }
2564
2565         /**
2566          * {@inheritDoc}
2567          */
2568         @Override
2569         public void imageInsertFailed(Image image, Throwable cause) {
2570                 logger.log(Level.WARNING, String.format("Image insert failed for %s." + image), cause);
2571                 coreListenerManager.fireImageInsertFailed(image, cause);
2572         }
2573
2574         /**
2575          * Convenience interface for external classes that want to access the core’s
2576          * configuration.
2577          *
2578          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
2579          */
2580         public static class Preferences {
2581
2582                 /** The wrapped options. */
2583                 private final Options options;
2584
2585                 /**
2586                  * Creates a new preferences object wrapped around the given options.
2587                  *
2588                  * @param options
2589                  *            The options to wrap
2590                  */
2591                 public Preferences(Options options) {
2592                         this.options = options;
2593                 }
2594
2595                 /**
2596                  * Returns the insertion delay.
2597                  *
2598                  * @return The insertion delay
2599                  */
2600                 public int getInsertionDelay() {
2601                         return options.getIntegerOption("InsertionDelay").get();
2602                 }
2603
2604                 /**
2605                  * Validates the given insertion delay.
2606                  *
2607                  * @param insertionDelay
2608                  *            The insertion delay to validate
2609                  * @return {@code true} if the given insertion delay was valid,
2610                  *         {@code false} otherwise
2611                  */
2612                 public boolean validateInsertionDelay(Integer insertionDelay) {
2613                         return options.getIntegerOption("InsertionDelay").validate(insertionDelay);
2614                 }
2615
2616                 /**
2617                  * Sets the insertion delay
2618                  *
2619                  * @param insertionDelay
2620                  *            The new insertion delay, or {@code null} to restore it to
2621                  *            the default value
2622                  * @return This preferences
2623                  */
2624                 public Preferences setInsertionDelay(Integer insertionDelay) {
2625                         options.getIntegerOption("InsertionDelay").set(insertionDelay);
2626                         return this;
2627                 }
2628
2629                 /**
2630                  * Returns the number of posts to show per page.
2631                  *
2632                  * @return The number of posts to show per page
2633                  */
2634                 public int getPostsPerPage() {
2635                         return options.getIntegerOption("PostsPerPage").get();
2636                 }
2637
2638                 /**
2639                  * Validates the number of posts per page.
2640                  *
2641                  * @param postsPerPage
2642                  *            The number of posts per page
2643                  * @return {@code true} if the number of posts per page was valid,
2644                  *         {@code false} otherwise
2645                  */
2646                 public boolean validatePostsPerPage(Integer postsPerPage) {
2647                         return options.getIntegerOption("PostsPerPage").validate(postsPerPage);
2648                 }
2649
2650                 /**
2651                  * Sets the number of posts to show per page.
2652                  *
2653                  * @param postsPerPage
2654                  *            The number of posts to show per page
2655                  * @return This preferences object
2656                  */
2657                 public Preferences setPostsPerPage(Integer postsPerPage) {
2658                         options.getIntegerOption("PostsPerPage").set(postsPerPage);
2659                         return this;
2660                 }
2661
2662                 /**
2663                  * Returns the number of images to show per page.
2664                  *
2665                  * @return The number of images to show per page
2666                  */
2667                 public int getImagesPerPage() {
2668                         return options.getIntegerOption("ImagesPerPage").get();
2669                 }
2670
2671                 /**
2672                  * Validates the number of images per page.
2673                  *
2674                  * @param imagesPerPage
2675                  *            The number of images per page
2676                  * @return {@code true} if the number of images per page was valid,
2677                  *         {@code false} otherwise
2678                  */
2679                 public boolean validateImagesPerPage(Integer imagesPerPage) {
2680                         return options.getIntegerOption("ImagesPerPage").validate(imagesPerPage);
2681                 }
2682
2683                 /**
2684                  * Sets the number of images per page.
2685                  *
2686                  * @param imagesPerPage
2687                  *            The number of images per page
2688                  * @return This preferences object
2689                  */
2690                 public Preferences setImagesPerPage(Integer imagesPerPage) {
2691                         options.getIntegerOption("ImagesPerPage").set(imagesPerPage);
2692                         return this;
2693                 }
2694
2695                 /**
2696                  * Returns the number of characters per post, or <code>-1</code> if the
2697                  * posts should not be cut off.
2698                  *
2699                  * @return The numbers of characters per post
2700                  */
2701                 public int getCharactersPerPost() {
2702                         return options.getIntegerOption("CharactersPerPost").get();
2703                 }
2704
2705                 /**
2706                  * Validates the number of characters per post.
2707                  *
2708                  * @param charactersPerPost
2709                  *            The number of characters per post
2710                  * @return {@code true} if the number of characters per post was valid,
2711                  *         {@code false} otherwise
2712                  */
2713                 public boolean validateCharactersPerPost(Integer charactersPerPost) {
2714                         return options.getIntegerOption("CharactersPerPost").validate(charactersPerPost);
2715                 }
2716
2717                 /**
2718                  * Sets the number of characters per post.
2719                  *
2720                  * @param charactersPerPost
2721                  *            The number of characters per post, or <code>-1</code> to
2722                  *            not cut off the posts
2723                  * @return This preferences objects
2724                  */
2725                 public Preferences setCharactersPerPost(Integer charactersPerPost) {
2726                         options.getIntegerOption("CharactersPerPost").set(charactersPerPost);
2727                         return this;
2728                 }
2729
2730                 /**
2731                  * Returns the number of characters the shortened post should have.
2732                  *
2733                  * @return The number of characters of the snippet
2734                  */
2735                 public int getPostCutOffLength() {
2736                         return options.getIntegerOption("PostCutOffLength").get();
2737                 }
2738
2739                 /**
2740                  * Validates the number of characters after which to cut off the post.
2741                  *
2742                  * @param postCutOffLength
2743                  *            The number of characters of the snippet
2744                  * @return {@code true} if the number of characters of the snippet is
2745                  *         valid, {@code false} otherwise
2746                  */
2747                 public boolean validatePostCutOffLength(Integer postCutOffLength) {
2748                         return options.getIntegerOption("PostCutOffLength").validate(postCutOffLength);
2749                 }
2750
2751                 /**
2752                  * Sets the number of characters the shortened post should have.
2753                  *
2754                  * @param postCutOffLength
2755                  *            The number of characters of the snippet
2756                  * @return This preferences
2757                  */
2758                 public Preferences setPostCutOffLength(Integer postCutOffLength) {
2759                         options.getIntegerOption("PostCutOffLength").set(postCutOffLength);
2760                         return this;
2761                 }
2762
2763                 /**
2764                  * Returns whether Sone requires full access to be even visible.
2765                  *
2766                  * @return {@code true} if Sone requires full access, {@code false}
2767                  *         otherwise
2768                  */
2769                 public boolean isRequireFullAccess() {
2770                         return options.getBooleanOption("RequireFullAccess").get();
2771                 }
2772
2773                 /**
2774                  * Sets whether Sone requires full access to be even visible.
2775                  *
2776                  * @param requireFullAccess
2777                  *            {@code true} if Sone requires full access, {@code false}
2778                  *            otherwise
2779                  */
2780                 public void setRequireFullAccess(Boolean requireFullAccess) {
2781                         options.getBooleanOption("RequireFullAccess").set(requireFullAccess);
2782                 }
2783
2784                 /**
2785                  * Returns the positive trust.
2786                  *
2787                  * @return The positive trust
2788                  */
2789                 public int getPositiveTrust() {
2790                         return options.getIntegerOption("PositiveTrust").get();
2791                 }
2792
2793                 /**
2794                  * Validates the positive trust.
2795                  *
2796                  * @param positiveTrust
2797                  *            The positive trust to validate
2798                  * @return {@code true} if the positive trust was valid, {@code false}
2799                  *         otherwise
2800                  */
2801                 public boolean validatePositiveTrust(Integer positiveTrust) {
2802                         return options.getIntegerOption("PositiveTrust").validate(positiveTrust);
2803                 }
2804
2805                 /**
2806                  * Sets the positive trust.
2807                  *
2808                  * @param positiveTrust
2809                  *            The new positive trust, or {@code null} to restore it to
2810                  *            the default vlaue
2811                  * @return This preferences
2812                  */
2813                 public Preferences setPositiveTrust(Integer positiveTrust) {
2814                         options.getIntegerOption("PositiveTrust").set(positiveTrust);
2815                         return this;
2816                 }
2817
2818                 /**
2819                  * Returns the negative trust.
2820                  *
2821                  * @return The negative trust
2822                  */
2823                 public int getNegativeTrust() {
2824                         return options.getIntegerOption("NegativeTrust").get();
2825                 }
2826
2827                 /**
2828                  * Validates the negative trust.
2829                  *
2830                  * @param negativeTrust
2831                  *            The negative trust to validate
2832                  * @return {@code true} if the negative trust was valid, {@code false}
2833                  *         otherwise
2834                  */
2835                 public boolean validateNegativeTrust(Integer negativeTrust) {
2836                         return options.getIntegerOption("NegativeTrust").validate(negativeTrust);
2837                 }
2838
2839                 /**
2840                  * Sets the negative trust.
2841                  *
2842                  * @param negativeTrust
2843                  *            The negative trust, or {@code null} to restore it to the
2844                  *            default value
2845                  * @return The preferences
2846                  */
2847                 public Preferences setNegativeTrust(Integer negativeTrust) {
2848                         options.getIntegerOption("NegativeTrust").set(negativeTrust);
2849                         return this;
2850                 }
2851
2852                 /**
2853                  * Returns the trust comment. This is the comment that is set in the web
2854                  * of trust when a trust value is assigned to an identity.
2855                  *
2856                  * @return The trust comment
2857                  */
2858                 public String getTrustComment() {
2859                         return options.getStringOption("TrustComment").get();
2860                 }
2861
2862                 /**
2863                  * Sets the trust comment.
2864                  *
2865                  * @param trustComment
2866                  *            The trust comment, or {@code null} to restore it to the
2867                  *            default value
2868                  * @return This preferences
2869                  */
2870                 public Preferences setTrustComment(String trustComment) {
2871                         options.getStringOption("TrustComment").set(trustComment);
2872                         return this;
2873                 }
2874
2875                 /**
2876                  * Returns whether the {@link FcpInterface FCP interface} is currently
2877                  * active.
2878                  *
2879                  * @see FcpInterface#setActive(boolean)
2880                  * @return {@code true} if the FCP interface is currently active,
2881                  *         {@code false} otherwise
2882                  */
2883                 public boolean isFcpInterfaceActive() {
2884                         return options.getBooleanOption("ActivateFcpInterface").get();
2885                 }
2886
2887                 /**
2888                  * Sets whether the {@link FcpInterface FCP interface} is currently
2889                  * active.
2890                  *
2891                  * @see FcpInterface#setActive(boolean)
2892                  * @param fcpInterfaceActive
2893                  *            {@code true} to activate the FCP interface, {@code false}
2894                  *            to deactivate the FCP interface
2895                  * @return This preferences object
2896                  */
2897                 public Preferences setFcpInterfaceActive(boolean fcpInterfaceActive) {
2898                         options.getBooleanOption("ActivateFcpInterface").set(fcpInterfaceActive);
2899                         return this;
2900                 }
2901
2902                 /**
2903                  * Returns the action level for which full access to the FCP interface
2904                  * is required.
2905                  *
2906                  * @return The action level for which full access to the FCP interface
2907                  *         is required
2908                  */
2909                 public FullAccessRequired getFcpFullAccessRequired() {
2910                         return FullAccessRequired.values()[options.getIntegerOption("FcpFullAccessRequired").get()];
2911                 }
2912
2913                 /**
2914                  * Sets the action level for which full access to the FCP interface is
2915                  * required
2916                  *
2917                  * @param fcpFullAccessRequired
2918                  *            The action level
2919                  * @return This preferences
2920                  */
2921                 public Preferences setFcpFullAccessRequired(FullAccessRequired fcpFullAccessRequired) {
2922                         options.getIntegerOption("FcpFullAccessRequired").set((fcpFullAccessRequired != null) ? fcpFullAccessRequired.ordinal() : null);
2923                         return this;
2924                 }
2925
2926         }
2927
2928 }