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

   1 /*
   2  * Sone - Core.java - Copyright © 2010 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.fcp.FcpInterface;
  50 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  51 import net.pterodactylus.sone.freenet.wot.Identity;
  52 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  53 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  54 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  55 import net.pterodactylus.sone.freenet.wot.Trust;
  56 import net.pterodactylus.sone.freenet.wot.WebOfTrustException;
  57 import net.pterodactylus.sone.main.SonePlugin;
  58 import net.pterodactylus.util.config.Configuration;
  59 import net.pterodactylus.util.config.ConfigurationException;
  60 import net.pterodactylus.util.logging.Logging;
  61 import net.pterodactylus.util.number.Numbers;
  62 import net.pterodactylus.util.service.AbstractService;
  63 import net.pterodactylus.util.thread.Ticker;
  64 import net.pterodactylus.util.validation.EqualityValidator;
  65 import net.pterodactylus.util.validation.IntegerRangeValidator;
  66 import net.pterodactylus.util.validation.OrValidator;
  67 import net.pterodactylus.util.validation.Validation;
  68 import net.pterodactylus.util.version.Version;
  69 import freenet.keys.FreenetURI;
  70
  71 /**
  72  * The Sone core.
  73  *
  74  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  75  */
  76 public class Core extends AbstractService implements IdentityListener, UpdateListener, SoneProvider, PostProvider, SoneInsertListener, ImageInsertListener {
  77
  78         /** The logger. */
  79         private static final Logger logger = Logging.getLogger(Core.class);
  80
  81         /** The options. */
  82         private final Options options = new Options();
  83
  84         /** The preferences. */
  85         private final Preferences preferences = new Preferences(options);
  86
  87         /** The core listener manager. */
  88         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
  89
  90         /** The configuration. */
  91         private Configuration configuration;
  92
  93         /** Whether we’re currently saving the configuration. */
  94         private boolean storingConfiguration = false;
  95
  96         /** The identity manager. */
  97         private final IdentityManager identityManager;
  98
  99         /** Interface to freenet. */
 100         private final FreenetInterface freenetInterface;
 101
 102         /** The Sone downloader. */
 103         private final SoneDownloader soneDownloader;
 104
 105         /** The image inserter. */
 106         private final ImageInserter imageInserter;
 107
 108         /** Sone downloader thread-pool. */
 109         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10);
 110
 111         /** The update checker. */
 112         private final UpdateChecker updateChecker;
 113
 114         /** The FCP interface. */
 115         private volatile FcpInterface fcpInterface;
 116
 117         /** The times Sones were followed. */
 118         private final Map<Sone, Long> soneFollowingTimes = new HashMap<Sone, Long>();
 119
 120         /** Locked local Sones. */
 121         /* synchronize on itself. */
 122         private final Set<Sone> lockedSones = new HashSet<Sone>();
 123
 124         /** Sone inserters. */
 125         /* synchronize access on this on localSones. */
 126         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 127
 128         /** Sone rescuers. */
 129         /* synchronize access on this on localSones. */
 130         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 131
 132         /** All local Sones. */
 133         /* synchronize access on this on itself. */
 134         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 135
 136         /** All remote Sones. */
 137         /* synchronize access on this on itself. */
 138         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 139
 140         /** All known Sones. */
 141         private Set<String> knownSones = new HashSet<String>();
 142
 143         /** All posts. */
 144         private Map<String, Post> posts = new HashMap<String, Post>();
 145
 146         /** All known posts. */
 147         private Set<String> knownPosts = new HashSet<String>();
 148
 149         /** All replies. */
 150         private Map<String, PostReply> replies = new HashMap<String, PostReply>();
 151
 152         /** All known replies. */
 153         private Set<String> knownReplies = new HashSet<String>();
 154
 155         /** All bookmarked posts. */
 156         /* synchronize access on itself. */
 157         private Set<String> bookmarkedPosts = new HashSet<String>();
 158
 159         /** Trusted identities, sorted by own identities. */
 160         private Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 161
 162         /** All known albums. */
 163         private Map<String, Album> albums = new HashMap<String, Album>();
 164
 165         /** All known images. */
 166         private Map<String, Image> images = new HashMap<String, Image>();
 167
 168         /** All temporary images. */
 169         private Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 170
 171         /** Ticker for threads that mark own elements as known. */
 172         private Ticker localElementTicker = new Ticker();
 173
 174         /** The time the configuration was last touched. */
 175         private volatile long lastConfigurationUpdate;
 176
 177         /**
 178          * Creates a new core.
 179          *
 180          * @param configuration
 181          *            The configuration of the core
 182          * @param freenetInterface
 183          *            The freenet interface
 184          * @param identityManager
 185          *            The identity manager
 186          */
 187         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 188                 super("Sone Core");
 189                 this.configuration = configuration;
 190                 this.freenetInterface = freenetInterface;
 191                 this.identityManager = identityManager;
 192                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 193                 this.imageInserter = new ImageInserter(this, freenetInterface);
 194                 this.updateChecker = new UpdateChecker(freenetInterface);
 195         }
 196
 197         //
 198         // LISTENER MANAGEMENT
 199         //
 200
 201         /**
 202          * Adds a new core listener.
 203          *
 204          * @param coreListener
 205          *            The listener to add
 206          */
 207         public void addCoreListener(CoreListener coreListener) {
 208                 coreListenerManager.addListener(coreListener);
 209         }
 210
 211         /**
 212          * Removes a core listener.
 213          *
 214          * @param coreListener
 215          *            The listener to remove
 216          */
 217         public void removeCoreListener(CoreListener coreListener) {
 218                 coreListenerManager.removeListener(coreListener);
 219         }
 220
 221         //
 222         // ACCESSORS
 223         //
 224
 225         /**
 226          * Sets the configuration to use. This will automatically save the current
 227          * configuration to the given configuration.
 228          *
 229          * @param configuration
 230          *            The new configuration to use
 231          */
 232         public void setConfiguration(Configuration configuration) {
 233                 this.configuration = configuration;
 234                 touchConfiguration();
 235         }
 236
 237         /**
 238          * Returns the options used by the core.
 239          *
 240          * @return The options of the core
 241          */
 242         public Preferences getPreferences() {
 243                 return preferences;
 244         }
 245
 246         /**
 247          * Returns the identity manager used by the core.
 248          *
 249          * @return The identity manager
 250          */
 251         public IdentityManager getIdentityManager() {
 252                 return identityManager;
 253         }
 254
 255         /**
 256          * Returns the update checker.
 257          *
 258          * @return The update checker
 259          */
 260         public UpdateChecker getUpdateChecker() {
 261                 return updateChecker;
 262         }
 263
 264         /**
 265          * Sets the FCP interface to use.
 266          *
 267          * @param fcpInterface
 268          *            The FCP interface to use
 269          */
 270         public void setFcpInterface(FcpInterface fcpInterface) {
 271                 this.fcpInterface = fcpInterface;
 272         }
 273
 274         /**
 275          * Returns the Sone rescuer for the given local Sone.
 276          *
 277          * @param sone
 278          *            The local Sone to get the rescuer for
 279          * @return The Sone rescuer for the given Sone
 280          */
 281         public SoneRescuer getSoneRescuer(Sone sone) {
 282                 Validation.begin().isNotNull("Sone", sone).check().is("Local Sone", isLocalSone(sone)).check();
 283                 synchronized (localSones) {
 284                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 285                         if (soneRescuer == null) {
 286                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 287                                 soneRescuers.put(sone, soneRescuer);
 288                                 soneRescuer.start();
 289                         }
 290                         return soneRescuer;
 291                 }
 292         }
 293
 294         /**
 295          * Returns whether the given Sone is currently locked.
 296          *
 297          * @param sone
 298          *            The sone to check
 299          * @return {@code true} if the Sone is locked, {@code false} if it is not
 300          */
 301         public boolean isLocked(Sone sone) {
 302                 synchronized (lockedSones) {
 303                         return lockedSones.contains(sone);
 304                 }
 305         }
 306
 307         /**
 308          * Returns all Sones, remote and local.
 309          *
 310          * @return All Sones
 311          */
 312         public Set<Sone> getSones() {
 313                 Set<Sone> allSones = new HashSet<Sone>();
 314                 allSones.addAll(getLocalSones());
 315                 allSones.addAll(getRemoteSones());
 316                 return allSones;
 317         }
 318
 319         /**
 320          * Returns the Sone with the given ID, regardless whether it’s local or
 321          * remote.
 322          *
 323          * @param id
 324          *            The ID of the Sone to get
 325          * @return The Sone with the given ID, or {@code null} if there is no such
 326          *         Sone
 327          */
 328         public Sone getSone(String id) {
 329                 return getSone(id, true);
 330         }
 331
 332         /**
 333          * Returns the Sone with the given ID, regardless whether it’s local or
 334          * remote.
 335          *
 336          * @param id
 337          *            The ID of the Sone to get
 338          * @param create
 339          *            {@code true} to create a new Sone if none exists,
 340          *            {@code false} to return {@code null} if a Sone with the given
 341          *            ID does not exist
 342          * @return The Sone with the given ID, or {@code null} if there is no such
 343          *         Sone
 344          */
 345         @Override
 346         public Sone getSone(String id, boolean create) {
 347                 if (isLocalSone(id)) {
 348                         return getLocalSone(id);
 349                 }
 350                 return getRemoteSone(id, create);
 351         }
 352
 353         /**
 354          * Checks whether the core knows a Sone with the given ID.
 355          *
 356          * @param id
 357          *            The ID of the Sone
 358          * @return {@code true} if there is a Sone with the given ID, {@code false}
 359          *         otherwise
 360          */
 361         public boolean hasSone(String id) {
 362                 return isLocalSone(id) || isRemoteSone(id);
 363         }
 364
 365         /**
 366          * Returns whether the given Sone is a local Sone.
 367          *
 368          * @param sone
 369          *            The Sone to check for its locality
 370          * @return {@code true} if the given Sone is local, {@code false} otherwise
 371          */
 372         public boolean isLocalSone(Sone sone) {
 373                 synchronized (localSones) {
 374                         return localSones.containsKey(sone.getId());
 375                 }
 376         }
 377
 378         /**
 379          * Returns whether the given ID is the ID of a local Sone.
 380          *
 381          * @param id
 382          *            The Sone ID to check for its locality
 383          * @return {@code true} if the given ID is a local Sone, {@code false}
 384          *         otherwise
 385          */
 386         public boolean isLocalSone(String id) {
 387                 synchronized (localSones) {
 388                         return localSones.containsKey(id);
 389                 }
 390         }
 391
 392         /**
 393          * Returns all local Sones.
 394          *
 395          * @return All local Sones
 396          */
 397         public Set<Sone> getLocalSones() {
 398                 synchronized (localSones) {
 399                         return new HashSet<Sone>(localSones.values());
 400                 }
 401         }
 402
 403         /**
 404          * Returns the local Sone with the given ID.
 405          *
 406          * @param id
 407          *            The ID of the Sone to get
 408          * @return The Sone with the given ID
 409          */
 410         public Sone getLocalSone(String id) {
 411                 return getLocalSone(id, true);
 412         }
 413
 414         /**
 415          * Returns the local Sone with the given ID, optionally creating a new Sone.
 416          *
 417          * @param id
 418          *            The ID of the Sone
 419          * @param create
 420          *            {@code true} to create a new Sone if none exists,
 421          *            {@code false} to return null if none exists
 422          * @return The Sone with the given ID, or {@code null}
 423          */
 424         public Sone getLocalSone(String id, boolean create) {
 425                 synchronized (localSones) {
 426                         Sone sone = localSones.get(id);
 427                         if ((sone == null) && create) {
 428                                 sone = new Sone(id);
 429                                 localSones.put(id, sone);
 430                         }
 431                         return sone;
 432                 }
 433         }
 434
 435         /**
 436          * Returns all remote Sones.
 437          *
 438          * @return All remote Sones
 439          */
 440         public Set<Sone> getRemoteSones() {
 441                 synchronized (remoteSones) {
 442                         return new HashSet<Sone>(remoteSones.values());
 443                 }
 444         }
 445
 446         /**
 447          * Returns the remote Sone with the given ID.
 448          *
 449          * @param id
 450          *            The ID of the remote Sone to get
 451          * @param create
 452          *            {@code true} to always create a Sone, {@code false} to return
 453          *            {@code null} if no Sone with the given ID exists
 454          * @return The Sone with the given ID
 455          */
 456         public Sone getRemoteSone(String id, boolean create) {
 457                 synchronized (remoteSones) {
 458                         Sone sone = remoteSones.get(id);
 459                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 460                                 sone = new Sone(id);
 461                                 remoteSones.put(id, sone);
 462                         }
 463                         return sone;
 464                 }
 465         }
 466
 467         /**
 468          * Returns whether the given Sone is a remote Sone.
 469          *
 470          * @param sone
 471          *            The Sone to check
 472          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 473          *         otherwise
 474          */
 475         public boolean isRemoteSone(Sone sone) {
 476                 synchronized (remoteSones) {
 477                         return remoteSones.containsKey(sone.getId());
 478                 }
 479         }
 480
 481         /**
 482          * Returns whether the Sone with the given ID is a remote Sone.
 483          *
 484          * @param id
 485          *            The ID of the Sone to check
 486          * @return {@code true} if the Sone with the given ID is a remote Sone,
 487          *         {@code false} otherwise
 488          */
 489         public boolean isRemoteSone(String id) {
 490                 synchronized (remoteSones) {
 491                         return remoteSones.containsKey(id);
 492                 }
 493         }
 494
 495         /**
 496          * Returns whether the given Sone has been modified.
 497          *
 498          * @param sone
 499          *            The Sone to check for modifications
 500          * @return {@code true} if a modification has been detected in the Sone,
 501          *         {@code false} otherwise
 502          */
 503         public boolean isModifiedSone(Sone sone) {
 504                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 505         }
 506
 507         /**
 508          * Returns the time when the given was first followed by any local Sone.
 509          *
 510          * @param sone
 511          *            The Sone to get the time for
 512          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 513          *         been followed, or {@link Long#MAX_VALUE}
 514          */
 515         public long getSoneFollowingTime(Sone sone) {
 516                 synchronized (soneFollowingTimes) {
 517                         if (soneFollowingTimes.containsKey(sone)) {
 518                                 return soneFollowingTimes.get(sone);
 519                         }
 520                         return Long.MAX_VALUE;
 521                 }
 522         }
 523
 524         /**
 525          * Returns whether the target Sone is trusted by the origin Sone.
 526          *
 527          * @param origin
 528          *            The origin Sone
 529          * @param target
 530          *            The target Sone
 531          * @return {@code true} if the target Sone is trusted by the origin Sone
 532          */
 533         public boolean isSoneTrusted(Sone origin, Sone target) {
 534                 Validation.begin().isNotNull("Origin", origin).isNotNull("Target", target).check().isInstanceOf("Origin’s OwnIdentity", origin.getIdentity(), OwnIdentity.class).check();
 535                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 536         }
 537
 538         /**
 539          * Returns the post with the given ID.
 540          *
 541          * @param postId
 542          *            The ID of the post to get
 543          * @return The post with the given ID, or a new post with the given ID
 544          */
 545         public Post getPost(String postId) {
 546                 return getPost(postId, true);
 547         }
 548
 549         /**
 550          * Returns the post with the given ID, optionally creating a new post.
 551          *
 552          * @param postId
 553          *            The ID of the post to get
 554          * @param create
 555          *            {@code true} it create a new post if no post with the given ID
 556          *            exists, {@code false} to return {@code null}
 557          * @return The post, or {@code null} if there is no such post
 558          */
 559         @Override
 560         public Post getPost(String postId, boolean create) {
 561                 synchronized (posts) {
 562                         Post post = posts.get(postId);
 563                         if ((post == null) && create) {
 564                                 post = new Post(postId);
 565                                 posts.put(postId, post);
 566                         }
 567                         return post;
 568                 }
 569         }
 570
 571         /**
 572          * Returns all posts that have the given Sone as recipient.
 573          *
 574          * @see Post#getRecipient()
 575          * @param recipient
 576          *            The recipient of the posts
 577          * @return All posts that have the given Sone as recipient
 578          */
 579         public Set<Post> getDirectedPosts(Sone recipient) {
 580                 Validation.begin().isNotNull("Recipient", recipient).check();
 581                 Set<Post> directedPosts = new HashSet<Post>();
 582                 synchronized (posts) {
 583                         for (Post post : posts.values()) {
 584                                 if (recipient.equals(post.getRecipient())) {
 585                                         directedPosts.add(post);
 586                                 }
 587                         }
 588                 }
 589                 return directedPosts;
 590         }
 591
 592         /**
 593          * Returns the reply with the given ID. If there is no reply with the given
 594          * ID yet, a new one is created.
 595          *
 596          * @param replyId
 597          *            The ID of the reply to get
 598          * @return The reply
 599          */
 600         public PostReply getReply(String replyId) {
 601                 return getReply(replyId, true);
 602         }
 603
 604         /**
 605          * Returns the reply with the given ID. If there is no reply with the given
 606          * ID yet, a new one is created, unless {@code create} is false in which
 607          * case {@code null} is returned.
 608          *
 609          * @param replyId
 610          *            The ID of the reply to get
 611          * @param create
 612          *            {@code true} to always return a {@link Reply}, {@code false}
 613          *            to return {@code null} if no reply can be found
 614          * @return The reply, or {@code null} if there is no such reply
 615          */
 616         public PostReply getReply(String replyId, boolean create) {
 617                 synchronized (replies) {
 618                         PostReply reply = replies.get(replyId);
 619                         if (create && (reply == null)) {
 620                                 reply = new PostReply(replyId);
 621                                 replies.put(replyId, reply);
 622                         }
 623                         return reply;
 624                 }
 625         }
 626
 627         /**
 628          * Returns all replies for the given post, order ascending by time.
 629          *
 630          * @param post
 631          *            The post to get all replies for
 632          * @return All replies for the given post
 633          */
 634         public List<PostReply> getReplies(Post post) {
 635                 Set<Sone> sones = getSones();
 636                 List<PostReply> replies = new ArrayList<PostReply>();
 637                 for (Sone sone : sones) {
 638                         for (PostReply reply : sone.getReplies()) {
 639                                 if (reply.getPost().equals(post)) {
 640                                         replies.add(reply);
 641                                 }
 642                         }
 643                 }
 644                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 645                 return replies;
 646         }
 647
 648         /**
 649          * Returns all Sones that have liked the given post.
 650          *
 651          * @param post
 652          *            The post to get the liking Sones for
 653          * @return The Sones that like the given post
 654          */
 655         public Set<Sone> getLikes(Post post) {
 656                 Set<Sone> sones = new HashSet<Sone>();
 657                 for (Sone sone : getSones()) {
 658                         if (sone.getLikedPostIds().contains(post.getId())) {
 659                                 sones.add(sone);
 660                         }
 661                 }
 662                 return sones;
 663         }
 664
 665         /**
 666          * Returns all Sones that have liked the given reply.
 667          *
 668          * @param reply
 669          *            The reply to get the liking Sones for
 670          * @return The Sones that like the given reply
 671          */
 672         public Set<Sone> getLikes(PostReply reply) {
 673                 Set<Sone> sones = new HashSet<Sone>();
 674                 for (Sone sone : getSones()) {
 675                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 676                                 sones.add(sone);
 677                         }
 678                 }
 679                 return sones;
 680         }
 681
 682         /**
 683          * Returns whether the given post is bookmarked.
 684          *
 685          * @param post
 686          *            The post to check
 687          * @return {@code true} if the given post is bookmarked, {@code false}
 688          *         otherwise
 689          */
 690         public boolean isBookmarked(Post post) {
 691                 return isPostBookmarked(post.getId());
 692         }
 693
 694         /**
 695          * Returns whether the post with the given ID is bookmarked.
 696          *
 697          * @param id
 698          *            The ID of the post to check
 699          * @return {@code true} if the post with the given ID is bookmarked,
 700          *         {@code false} otherwise
 701          */
 702         public boolean isPostBookmarked(String id) {
 703                 synchronized (bookmarkedPosts) {
 704                         return bookmarkedPosts.contains(id);
 705                 }
 706         }
 707
 708         /**
 709          * Returns all currently known bookmarked posts.
 710          *
 711          * @return All bookmarked posts
 712          */
 713         public Set<Post> getBookmarkedPosts() {
 714                 Set<Post> posts = new HashSet<Post>();
 715                 synchronized (bookmarkedPosts) {
 716                         for (String bookmarkedPostId : bookmarkedPosts) {
 717                                 Post post = getPost(bookmarkedPostId, false);
 718                                 if (post != null) {
 719                                         posts.add(post);
 720                                 }
 721                         }
 722                 }
 723                 return posts;
 724         }
 725
 726         /**
 727          * Returns the album with the given ID, creating a new album if no album
 728          * with the given ID can be found.
 729          *
 730          * @param albumId
 731          *            The ID of the album
 732          * @return The album with the given ID
 733          */
 734         public Album getAlbum(String albumId) {
 735                 return getAlbum(albumId, true);
 736         }
 737
 738         /**
 739          * Returns the album with the given ID, optionally creating a new album if
 740          * an album with the given ID can not be found.
 741          *
 742          * @param albumId
 743          *            The ID of the album
 744          * @param create
 745          *            {@code true} to create a new album if none exists for the
 746          *            given ID
 747          * @return The album with the given ID, or {@code null} if no album with the
 748          *         given ID exists and {@code create} is {@code false}
 749          */
 750         public Album getAlbum(String albumId, boolean create) {
 751                 synchronized (albums) {
 752                         Album album = albums.get(albumId);
 753                         if (create && (album == null)) {
 754                                 album = new Album(albumId);
 755                                 albums.put(albumId, album);
 756                         }
 757                         return album;
 758                 }
 759         }
 760
 761         /**
 762          * Returns the image with the given ID, creating it if necessary.
 763          *
 764          * @param imageId
 765          *            The ID of the image
 766          * @return The image with the given ID
 767          */
 768         public Image getImage(String imageId) {
 769                 return getImage(imageId, true);
 770         }
 771
 772         /**
 773          * Returns the image with the given ID, optionally creating it if it does
 774          * not exist.
 775          *
 776          * @param imageId
 777          *            The ID of the image
 778          * @param create
 779          *            {@code true} to create an image if none exists with the given
 780          *            ID
 781          * @return The image with the given ID, or {@code null} if none exists and
 782          *         none was created
 783          */
 784         public Image getImage(String imageId, boolean create) {
 785                 synchronized (images) {
 786                         Image image = images.get(imageId);
 787                         if (create && (image == null)) {
 788                                 image = new Image(imageId);
 789                                 images.put(imageId, image);
 790                         }
 791                         return image;
 792                 }
 793         }
 794
 795         /**
 796          * Returns the temporary image with the given ID.
 797          *
 798          * @param imageId
 799          *            The ID of the temporary image
 800          * @return The temporary image, or {@code null} if there is no temporary
 801          *         image with the given ID
 802          */
 803         public TemporaryImage getTemporaryImage(String imageId) {
 804                 synchronized (temporaryImages) {
 805                         return temporaryImages.get(imageId);
 806                 }
 807         }
 808
 809         //
 810         // ACTIONS
 811         //
 812
 813         /**
 814          * Locks the given Sone. A locked Sone will not be inserted by
 815          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 816          * again.
 817          *
 818          * @param sone
 819          *            The sone to lock
 820          */
 821         public void lockSone(Sone sone) {
 822                 synchronized (lockedSones) {
 823                         if (lockedSones.add(sone)) {
 824                                 coreListenerManager.fireSoneLocked(sone);
 825                         }
 826                 }
 827         }
 828
 829         /**
 830          * Unlocks the given Sone.
 831          *
 832          * @see #lockSone(Sone)
 833          * @param sone
 834          *            The sone to unlock
 835          */
 836         public void unlockSone(Sone sone) {
 837                 synchronized (lockedSones) {
 838                         if (lockedSones.remove(sone)) {
 839                                 coreListenerManager.fireSoneUnlocked(sone);
 840                         }
 841                 }
 842         }
 843
 844         /**
 845          * Adds a local Sone from the given own identity.
 846          *
 847          * @param ownIdentity
 848          *            The own identity to create a Sone from
 849          * @return The added (or already existing) Sone
 850          */
 851         public Sone addLocalSone(OwnIdentity ownIdentity) {
 852                 if (ownIdentity == null) {
 853                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 854                         return null;
 855                 }
 856                 synchronized (localSones) {
 857                         final Sone sone;
 858                         try {
 859                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 860                         } catch (MalformedURLException mue1) {
 861                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 862                                 return null;
 863                         }
 864                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 865                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 866                         sone.setKnown(true);
 867                         /* TODO - load posts ’n stuff */
 868                         localSones.put(ownIdentity.getId(), sone);
 869                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 870                         soneInserter.addSoneInsertListener(this);
 871                         soneInserters.put(sone, soneInserter);
 872                         sone.setStatus(SoneStatus.idle);
 873                         loadSone(sone);
 874                         soneInserter.start();
 875                         return sone;
 876                 }
 877         }
 878
 879         /**
 880          * Creates a new Sone for the given own identity.
 881          *
 882          * @param ownIdentity
 883          *            The own identity to create a Sone for
 884          * @return The created Sone
 885          */
 886         public Sone createSone(OwnIdentity ownIdentity) {
 887                 try {
 888                         ownIdentity.addContext("Sone");
 889                 } catch (WebOfTrustException wote1) {
 890                         logger.log(Level.SEVERE, "Could not add “Sone” context to own identity: " + ownIdentity, wote1);
 891                         return null;
 892                 }
 893                 Sone sone = addLocalSone(ownIdentity);
 894                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 895                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 896                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 897                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 898                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 899                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 900
 901                 followSone(sone, getSone("nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI"));
 902                 touchConfiguration();
 903                 return sone;
 904         }
 905
 906         /**
 907          * Adds the Sone of the given identity.
 908          *
 909          * @param identity
 910          *            The identity whose Sone to add
 911          * @return The added or already existing Sone
 912          */
 913         public Sone addRemoteSone(Identity identity) {
 914                 if (identity == null) {
 915                         logger.log(Level.WARNING, "Given Identity is null!");
 916                         return null;
 917                 }
 918                 synchronized (remoteSones) {
 919                         final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
 920                         boolean newSone = sone.getRequestUri() == null;
 921                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 922                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 923                         if (newSone) {
 924                                 synchronized (knownSones) {
 925                                         newSone = !knownSones.contains(sone.getId());
 926                                 }
 927                                 sone.setKnown(!newSone);
 928                                 if (newSone) {
 929                                         coreListenerManager.fireNewSoneFound(sone);
 930                                         for (Sone localSone : getLocalSones()) {
 931                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 932                                                         followSone(localSone, sone);
 933                                                 }
 934                                         }
 935                                 }
 936                         }
 937                         soneDownloader.addSone(sone);
 938                         soneDownloaders.execute(new Runnable() {
 939
 940                                 @Override
 941                                 @SuppressWarnings("synthetic-access")
 942                                 public void run() {
 943                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 944                                 }
 945
 946                         });
 947                         return sone;
 948                 }
 949         }
 950
 951         /**
 952          * Lets the given local Sone follow the Sone with the given ID.
 953          *
 954          * @param sone
 955          *            The local Sone that should follow another Sone
 956          * @param soneId
 957          *            The ID of the Sone to follow
 958          */
 959         public void followSone(Sone sone, String soneId) {
 960                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
 961                 Sone followedSone = getSone(soneId, true);
 962                 if (followedSone == null) {
 963                         logger.log(Level.INFO, String.format("Ignored Sone with invalid ID: %s", soneId));
 964                         return;
 965                 }
 966                 followSone(sone, getSone(soneId));
 967         }
 968
 969         /**
 970          * Lets the given local Sone follow the other given Sone. If the given Sone
 971          * was not followed by any local Sone before, this will mark all elements of
 972          * the followed Sone as read that have been created before the current
 973          * moment.
 974          *
 975          * @param sone
 976          *            The local Sone that should follow the other Sone
 977          * @param followedSone
 978          *            The Sone that should be followed
 979          */
 980         public void followSone(Sone sone, Sone followedSone) {
 981                 Validation.begin().isNotNull("Sone", sone).isNotNull("Followed Sone", followedSone).check();
 982                 sone.addFriend(followedSone.getId());
 983                 synchronized (soneFollowingTimes) {
 984                         if (!soneFollowingTimes.containsKey(followedSone)) {
 985                                 long now = System.currentTimeMillis();
 986                                 soneFollowingTimes.put(followedSone, now);
 987                                 for (Post post : followedSone.getPosts()) {
 988                                         if (post.getTime() < now) {
 989                                                 markPostKnown(post);
 990                                         }
 991                                 }
 992                                 for (PostReply reply : followedSone.getReplies()) {
 993                                         if (reply.getTime() < now) {
 994                                                 markReplyKnown(reply);
 995                                         }
 996                                 }
 997                         }
 998                 }
 999                 touchConfiguration();
1000         }
1001
1002         /**
1003          * Lets the given local Sone unfollow the Sone with the given ID.
1004          *
1005          * @param sone
1006          *            The local Sone that should unfollow another Sone
1007          * @param soneId
1008          *            The ID of the Sone being unfollowed
1009          */
1010         public void unfollowSone(Sone sone, String soneId) {
1011                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
1012                 unfollowSone(sone, getSone(soneId, false));
1013         }
1014
1015         /**
1016          * Lets the given local Sone unfollow the other given Sone. If the given
1017          * local Sone is the last local Sone that followed the given Sone, its
1018          * following time will be removed.
1019          *
1020          * @param sone
1021          *            The local Sone that should unfollow another Sone
1022          * @param unfollowedSone
1023          *            The Sone being unfollowed
1024          */
1025         public void unfollowSone(Sone sone, Sone unfollowedSone) {
1026                 Validation.begin().isNotNull("Sone", sone).isNotNull("Unfollowed Sone", unfollowedSone).check();
1027                 sone.removeFriend(unfollowedSone.getId());
1028                 boolean unfollowedSoneStillFollowed = false;
1029                 for (Sone localSone : getLocalSones()) {
1030                         unfollowedSoneStillFollowed |= localSone.hasFriend(unfollowedSone.getId());
1031                 }
1032                 if (!unfollowedSoneStillFollowed) {
1033                         synchronized (soneFollowingTimes) {
1034                                 soneFollowingTimes.remove(unfollowedSone);
1035                         }
1036                 }
1037                 touchConfiguration();
1038         }
1039
1040         /**
1041          * Retrieves the trust relationship from the origin to the target. If the
1042          * trust relationship can not be retrieved, {@code null} is returned.
1043          *
1044          * @see Identity#getTrust(OwnIdentity)
1045          * @param origin
1046          *            The origin of the trust tree
1047          * @param target
1048          *            The target of the trust
1049          * @return The trust relationship
1050          */
1051         public Trust getTrust(Sone origin, Sone target) {
1052                 if (!isLocalSone(origin)) {
1053                         logger.log(Level.WARNING, "Tried to get trust from remote Sone: %s", origin);
1054                         return null;
1055                 }
1056                 return target.getIdentity().getTrust((OwnIdentity) origin.getIdentity());
1057         }
1058
1059         /**
1060          * Sets the trust value of the given origin Sone for the target Sone.
1061          *
1062          * @param origin
1063          *            The origin Sone
1064          * @param target
1065          *            The target Sone
1066          * @param trustValue
1067          *            The trust value (from {@code -100} to {@code 100})
1068          */
1069         public void setTrust(Sone origin, Sone target, int trustValue) {
1070                 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();
1071                 try {
1072                         ((OwnIdentity) origin.getIdentity()).setTrust(target.getIdentity(), trustValue, preferences.getTrustComment());
1073                 } catch (WebOfTrustException wote1) {
1074                         logger.log(Level.WARNING, "Could not set trust for Sone: " + target, wote1);
1075                 }
1076         }
1077
1078         /**
1079          * Removes any trust assignment for the given target Sone.
1080          *
1081          * @param origin
1082          *            The trust origin
1083          * @param target
1084          *            The trust target
1085          */
1086         public void removeTrust(Sone origin, Sone target) {
1087                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
1088                 try {
1089                         ((OwnIdentity) origin.getIdentity()).removeTrust(target.getIdentity());
1090                 } catch (WebOfTrustException wote1) {
1091                         logger.log(Level.WARNING, "Could not remove trust for Sone: " + target, wote1);
1092                 }
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, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { 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, "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, "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, "Could not remove context and properties from Sone: " + 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, "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, "Invalid parent album ID: " + 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, "Tried to create post for non-local Sone: %s", sone);
1600                         return null;
1601                 }
1602                 final Post post = new Post(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, "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, "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, "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         }
1970
1971         /**
1972          * {@inheritDoc}
1973          */
1974         @Override
1975         public void serviceRun() {
1976                 long lastSaved = System.currentTimeMillis();
1977                 while (!shouldStop()) {
1978                         sleep(1000);
1979                         long now = System.currentTimeMillis();
1980                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1981                                 for (Sone localSone : getLocalSones()) {
1982                                         saveSone(localSone);
1983                                 }
1984                                 saveConfiguration();
1985                                 lastSaved = now;
1986                         }
1987                 }
1988         }
1989
1990         /**
1991          * Stops the core.
1992          */
1993         @Override
1994         public void serviceStop() {
1995                 synchronized (localSones) {
1996                         for (SoneInserter soneInserter : soneInserters.values()) {
1997                                 soneInserter.removeSoneInsertListener(this);
1998                                 soneInserter.stop();
1999                         }
2000                 }
2001                 updateChecker.stop();
2002                 updateChecker.removeUpdateListener(this);
2003                 soneDownloader.stop();
2004         }
2005
2006         //
2007         // PRIVATE METHODS
2008         //
2009
2010         /**
2011          * Saves the given Sone. This will persist all local settings for the given
2012          * Sone, such as the friends list and similar, private options.
2013          *
2014          * @param sone
2015          *            The Sone to save
2016          */
2017         private synchronized void saveSone(Sone sone) {
2018                 if (!isLocalSone(sone)) {
2019                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
2020                         return;
2021                 }
2022                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
2023                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
2024                         return;
2025                 }
2026
2027                 logger.log(Level.INFO, "Saving Sone: %s", sone);
2028                 try {
2029                         /* save Sone into configuration. */
2030                         String sonePrefix = "Sone/" + sone.getId();
2031                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
2032                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
2033
2034                         /* save profile. */
2035                         Profile profile = sone.getProfile();
2036                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
2037                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
2038                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
2039                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
2040                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
2041                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
2042                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
2043
2044                         /* save profile fields. */
2045                         int fieldCounter = 0;
2046                         for (Field profileField : profile.getFields()) {
2047                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
2048                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
2049                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
2050                         }
2051                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
2052
2053                         /* save posts. */
2054                         int postCounter = 0;
2055                         for (Post post : sone.getPosts()) {
2056                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
2057                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
2058                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
2059                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
2060                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
2061                         }
2062                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
2063
2064                         /* save replies. */
2065                         int replyCounter = 0;
2066                         for (PostReply reply : sone.getReplies()) {
2067                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
2068                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
2069                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
2070                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
2071                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
2072                         }
2073                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
2074
2075                         /* save post likes. */
2076                         int postLikeCounter = 0;
2077                         for (String postId : sone.getLikedPostIds()) {
2078                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
2079                         }
2080                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
2081
2082                         /* save reply likes. */
2083                         int replyLikeCounter = 0;
2084                         for (String replyId : sone.getLikedReplyIds()) {
2085                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
2086                         }
2087                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
2088
2089                         /* save friends. */
2090                         int friendCounter = 0;
2091                         for (String friendId : sone.getFriends()) {
2092                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
2093                         }
2094                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
2095
2096                         /* save albums. first, collect in a flat structure, top-level first. */
2097                         List<Album> albums = sone.getAllAlbums();
2098
2099                         int albumCounter = 0;
2100                         for (Album album : albums) {
2101                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
2102                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
2103                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
2104                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
2105                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
2106                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
2107                         }
2108                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
2109
2110                         /* save images. */
2111                         int imageCounter = 0;
2112                         for (Album album : albums) {
2113                                 for (Image image : album.getImages()) {
2114                                         if (!image.isInserted()) {
2115                                                 continue;
2116                                         }
2117                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
2118                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
2119                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
2120                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
2121                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
2122                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
2123                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
2124                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
2125                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
2126                                 }
2127                         }
2128                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
2129
2130                         /* save options. */
2131                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
2132                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
2133                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
2134                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
2135                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
2136                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
2137
2138                         configuration.save();
2139
2140                         ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
2141
2142                         logger.log(Level.INFO, "Sone %s saved.", sone);
2143                 } catch (ConfigurationException ce1) {
2144                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
2145                 } catch (WebOfTrustException wote1) {
2146                         logger.log(Level.WARNING, "Could not set WoT property for Sone: " + sone, wote1);
2147                 }
2148         }
2149
2150         /**
2151          * Saves the current options.
2152          */
2153         private void saveConfiguration() {
2154                 synchronized (configuration) {
2155                         if (storingConfiguration) {
2156                                 logger.log(Level.FINE, "Already storing configuration…");
2157                                 return;
2158                         }
2159                         storingConfiguration = true;
2160                 }
2161
2162                 /* store the options first. */
2163                 try {
2164                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
2165                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
2166                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
2167                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
2168                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
2169                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
2170                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
2171                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
2172                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
2173                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
2174                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
2175                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
2176                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
2177                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").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("CharactersPerPost", new DefaultOption<Integer>(400, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2254                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2255                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2256                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangeValidator(0, 100)));
2257                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangeValidator(-100, 100)));
2258                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2259                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2260
2261                         @Override
2262                         @SuppressWarnings("synthetic-access")
2263                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2264                                 fcpInterface.setActive(newValue);
2265                         }
2266                 }));
2267                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2268
2269                         @Override
2270                         @SuppressWarnings("synthetic-access")
2271                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2272                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2273                         }
2274
2275                 }));
2276                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
2277                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
2278                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
2279
2280                 /* read options from configuration. */
2281                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
2282                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
2283                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
2284                 options.getBooleanOption("ClearOnNextRestart").set(null);
2285                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
2286                 if (clearConfiguration) {
2287                         /* stop loading the configuration. */
2288                         return;
2289                 }
2290
2291                 loadConfigurationValue("InsertionDelay");
2292                 loadConfigurationValue("PostsPerPage");
2293                 loadConfigurationValue("CharactersPerPost");
2294                 loadConfigurationValue("PostCutOffLength");
2295                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2296                 loadConfigurationValue("PositiveTrust");
2297                 loadConfigurationValue("NegativeTrust");
2298                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2299                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2300                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2301                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
2302
2303                 /* load known Sones. */
2304                 int soneCounter = 0;
2305                 while (true) {
2306                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2307                         if (knownSoneId == null) {
2308                                 break;
2309                         }
2310                         synchronized (knownSones) {
2311                                 knownSones.add(knownSoneId);
2312                         }
2313                 }
2314
2315                 /* load Sone following times. */
2316                 soneCounter = 0;
2317                 while (true) {
2318                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2319                         if (soneId == null) {
2320                                 break;
2321                         }
2322                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2323                         Sone followedSone = getSone(soneId);
2324                         if (followedSone == null) {
2325                                 logger.log(Level.WARNING, String.format("Ignoring Sone with invalid ID: %s", soneId));
2326                         } else {
2327                                 synchronized (soneFollowingTimes) {
2328                                         soneFollowingTimes.put(getSone(soneId), time);
2329                                 }
2330                         }
2331                         ++soneCounter;
2332                 }
2333
2334                 /* load known posts. */
2335                 int postCounter = 0;
2336                 while (true) {
2337                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
2338                         if (knownPostId == null) {
2339                                 break;
2340                         }
2341                         synchronized (knownPosts) {
2342                                 knownPosts.add(knownPostId);
2343                         }
2344                 }
2345
2346                 /* load known replies. */
2347                 int replyCounter = 0;
2348                 while (true) {
2349                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
2350                         if (knownReplyId == null) {
2351                                 break;
2352                         }
2353                         synchronized (knownReplies) {
2354                                 knownReplies.add(knownReplyId);
2355                         }
2356                 }
2357
2358                 /* load bookmarked posts. */
2359                 int bookmarkedPostCounter = 0;
2360                 while (true) {
2361                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2362                         if (bookmarkedPostId == null) {
2363                                 break;
2364                         }
2365                         synchronized (bookmarkedPosts) {
2366                                 bookmarkedPosts.add(bookmarkedPostId);
2367                         }
2368                 }
2369
2370         }
2371
2372         /**
2373          * Loads an {@link Integer} configuration value for the option with the
2374          * given name, logging validation failures.
2375          *
2376          * @param optionName
2377          *            The name of the option to load
2378          */
2379         private void loadConfigurationValue(String optionName) {
2380                 try {
2381                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2382                 } catch (IllegalArgumentException iae1) {
2383                         logger.log(Level.WARNING, "Invalid value for " + optionName + " in configuration, using default.");
2384                 }
2385         }
2386
2387         /**
2388          * Generate a Sone URI from the given URI and latest edition.
2389          *
2390          * @param uriString
2391          *            The URI to derive the Sone URI from
2392          * @return The derived URI
2393          */
2394         private FreenetURI getSoneUri(String uriString) {
2395                 try {
2396                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
2397                         return uri;
2398                 } catch (MalformedURLException mue1) {
2399                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
2400                         return null;
2401                 }
2402         }
2403
2404         //
2405         // INTERFACE IdentityListener
2406         //
2407
2408         /**
2409          * {@inheritDoc}
2410          */
2411         @Override
2412         public void ownIdentityAdded(OwnIdentity ownIdentity) {
2413                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
2414                 if (ownIdentity.hasContext("Sone")) {
2415                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2416                         addLocalSone(ownIdentity);
2417                 }
2418         }
2419
2420         /**
2421          * {@inheritDoc}
2422          */
2423         @Override
2424         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
2425                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
2426                 trustedIdentities.remove(ownIdentity);
2427         }
2428
2429         /**
2430          * {@inheritDoc}
2431          */
2432         @Override
2433         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
2434                 logger.log(Level.FINEST, "Adding Identity: " + identity);
2435                 trustedIdentities.get(ownIdentity).add(identity);
2436                 addRemoteSone(identity);
2437         }
2438
2439         /**
2440          * {@inheritDoc}
2441          */
2442         @Override
2443         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
2444                 new Thread(new Runnable() {
2445
2446                         @Override
2447                         @SuppressWarnings("synthetic-access")
2448                         public void run() {
2449                                 Sone sone = getRemoteSone(identity.getId(), false);
2450                                 sone.setIdentity(identity);
2451                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2452                                 soneDownloader.addSone(sone);
2453                                 soneDownloader.fetchSone(sone);
2454                         }
2455                 }).start();
2456         }
2457
2458         /**
2459          * {@inheritDoc}
2460          */
2461         @Override
2462         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
2463                 trustedIdentities.get(ownIdentity).remove(identity);
2464                 boolean foundIdentity = false;
2465                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2466                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2467                                 continue;
2468                         }
2469                         if (trustedIdentity.getValue().contains(identity)) {
2470                                 foundIdentity = true;
2471                         }
2472                 }
2473                 if (foundIdentity) {
2474                         /* some local identity still trusts this identity, don’t remove. */
2475                         return;
2476                 }
2477                 Sone sone = getSone(identity.getId(), false);
2478                 if (sone == null) {
2479                         /* TODO - we don’t have the Sone anymore. should this happen? */
2480                         return;
2481                 }
2482                 synchronized (posts) {
2483                         synchronized (knownPosts) {
2484                                 for (Post post : sone.getPosts()) {
2485                                         posts.remove(post.getId());
2486                                         coreListenerManager.firePostRemoved(post);
2487                                 }
2488                         }
2489                 }
2490                 synchronized (replies) {
2491                         synchronized (knownReplies) {
2492                                 for (PostReply reply : sone.getReplies()) {
2493                                         replies.remove(reply.getId());
2494                                         coreListenerManager.fireReplyRemoved(reply);
2495                                 }
2496                         }
2497                 }
2498                 synchronized (remoteSones) {
2499                         remoteSones.remove(identity.getId());
2500                 }
2501                 coreListenerManager.fireSoneRemoved(sone);
2502         }
2503
2504         //
2505         // INTERFACE UpdateListener
2506         //
2507
2508         /**
2509          * {@inheritDoc}
2510          */
2511         @Override
2512         public void updateFound(Version version, long releaseTime, long latestEdition) {
2513                 coreListenerManager.fireUpdateFound(version, releaseTime, latestEdition);
2514         }
2515
2516         //
2517         // INTERFACE ImageInsertListener
2518         //
2519
2520         /**
2521          * {@inheritDoc}
2522          */
2523         @Override
2524         public void insertStarted(Sone sone) {
2525                 coreListenerManager.fireSoneInserting(sone);
2526         }
2527
2528         /**
2529          * {@inheritDoc}
2530          */
2531         @Override
2532         public void insertFinished(Sone sone, long insertDuration) {
2533                 coreListenerManager.fireSoneInserted(sone, insertDuration);
2534         }
2535
2536         /**
2537          * {@inheritDoc}
2538          */
2539         @Override
2540         public void insertAborted(Sone sone, Throwable cause) {
2541                 coreListenerManager.fireSoneInsertAborted(sone, cause);
2542         }
2543
2544         //
2545         // SONEINSERTLISTENER METHODS
2546         //
2547
2548         /**
2549          * {@inheritDoc}
2550          */
2551         @Override
2552         public void imageInsertStarted(Image image) {
2553                 logger.log(Level.WARNING, "Image insert started for " + image);
2554                 coreListenerManager.fireImageInsertStarted(image);
2555         }
2556
2557         /**
2558          * {@inheritDoc}
2559          */
2560         @Override
2561         public void imageInsertAborted(Image image) {
2562                 logger.log(Level.WARNING, "Image insert aborted for " + image);
2563                 coreListenerManager.fireImageInsertAborted(image);
2564         }
2565
2566         /**
2567          * {@inheritDoc}
2568          */
2569         @Override
2570         public void imageInsertFinished(Image image, FreenetURI key) {
2571                 logger.log(Level.WARNING, "Image insert finished for " + image + ": " + key);
2572                 image.setKey(key.toString());
2573                 deleteTemporaryImage(image.getId());
2574                 saveSone(image.getSone());
2575                 coreListenerManager.fireImageInsertFinished(image);
2576         }
2577
2578         /**
2579          * {@inheritDoc}
2580          */
2581         @Override
2582         public void imageInsertFailed(Image image, Throwable cause) {
2583                 logger.log(Level.WARNING, "Image insert failed for " + image, cause);
2584                 coreListenerManager.fireImageInsertFailed(image, cause);
2585         }
2586
2587         /**
2588          * Convenience interface for external classes that want to access the core’s
2589          * configuration.
2590          *
2591          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
2592          */
2593         public static class Preferences {
2594
2595                 /** The wrapped options. */
2596                 private final Options options;
2597
2598                 /**
2599                  * Creates a new preferences object wrapped around the given options.
2600                  *
2601                  * @param options
2602                  *            The options to wrap
2603                  */
2604                 public Preferences(Options options) {
2605                         this.options = options;
2606                 }
2607
2608                 /**
2609                  * Returns the insertion delay.
2610                  *
2611                  * @return The insertion delay
2612                  */
2613                 public int getInsertionDelay() {
2614                         return options.getIntegerOption("InsertionDelay").get();
2615                 }
2616
2617                 /**
2618                  * Validates the given insertion delay.
2619                  *
2620                  * @param insertionDelay
2621                  *            The insertion delay to validate
2622                  * @return {@code true} if the given insertion delay was valid,
2623                  *         {@code false} otherwise
2624                  */
2625                 public boolean validateInsertionDelay(Integer insertionDelay) {
2626                         return options.getIntegerOption("InsertionDelay").validate(insertionDelay);
2627                 }
2628
2629                 /**
2630                  * Sets the insertion delay
2631                  *
2632                  * @param insertionDelay
2633                  *            The new insertion delay, or {@code null} to restore it to
2634                  *            the default value
2635                  * @return This preferences
2636                  */
2637                 public Preferences setInsertionDelay(Integer insertionDelay) {
2638                         options.getIntegerOption("InsertionDelay").set(insertionDelay);
2639                         return this;
2640                 }
2641
2642                 /**
2643                  * Returns the number of posts to show per page.
2644                  *
2645                  * @return The number of posts to show per page
2646                  */
2647                 public int getPostsPerPage() {
2648                         return options.getIntegerOption("PostsPerPage").get();
2649                 }
2650
2651                 /**
2652                  * Validates the number of posts per page.
2653                  *
2654                  * @param postsPerPage
2655                  *            The number of posts per page
2656                  * @return {@code true} if the number of posts per page was valid,
2657                  *         {@code false} otherwise
2658                  */
2659                 public boolean validatePostsPerPage(Integer postsPerPage) {
2660                         return options.getIntegerOption("PostsPerPage").validate(postsPerPage);
2661                 }
2662
2663                 /**
2664                  * Sets the number of posts to show per page.
2665                  *
2666                  * @param postsPerPage
2667                  *            The number of posts to show per page
2668                  * @return This preferences object
2669                  */
2670                 public Preferences setPostsPerPage(Integer postsPerPage) {
2671                         options.getIntegerOption("PostsPerPage").set(postsPerPage);
2672                         return this;
2673                 }
2674
2675                 /**
2676                  * Returns the number of characters per post, or <code>-1</code> if the
2677                  * posts should not be cut off.
2678                  *
2679                  * @return The numbers of characters per post
2680                  */
2681                 public int getCharactersPerPost() {
2682                         return options.getIntegerOption("CharactersPerPost").get();
2683                 }
2684
2685                 /**
2686                  * Validates the number of characters per post.
2687                  *
2688                  * @param charactersPerPost
2689                  *            The number of characters per post
2690                  * @return {@code true} if the number of characters per post was valid,
2691                  *         {@code false} otherwise
2692                  */
2693                 public boolean validateCharactersPerPost(Integer charactersPerPost) {
2694                         return options.getIntegerOption("CharactersPerPost").validate(charactersPerPost);
2695                 }
2696
2697                 /**
2698                  * Sets the number of characters per post.
2699                  *
2700                  * @param charactersPerPost
2701                  *            The number of characters per post, or <code>-1</code> to
2702                  *            not cut off the posts
2703                  * @return This preferences objects
2704                  */
2705                 public Preferences setCharactersPerPost(Integer charactersPerPost) {
2706                         options.getIntegerOption("CharactersPerPost").set(charactersPerPost);
2707                         return this;
2708                 }
2709
2710                 /**
2711                  * Returns the number of characters the shortened post should have.
2712                  *
2713                  * @return The number of characters of the snippet
2714                  */
2715                 public int getPostCutOffLength() {
2716                         return options.getIntegerOption("PostCutOffLength").get();
2717                 }
2718
2719                 /**
2720                  * Validates the number of characters after which to cut off the post.
2721                  *
2722                  * @param postCutOffLength
2723                  *            The number of characters of the snippet
2724                  * @return {@code true} if the number of characters of the snippet is
2725                  *         valid, {@code false} otherwise
2726                  */
2727                 public boolean validatePostCutOffLength(Integer postCutOffLength) {
2728                         return options.getIntegerOption("PostCutOffLength").validate(postCutOffLength);
2729                 }
2730
2731                 /**
2732                  * Sets the number of characters the shortened post should have.
2733                  *
2734                  * @param postCutOffLength
2735                  *            The number of characters of the snippet
2736                  * @return This preferences
2737                  */
2738                 public Preferences setPostCutOffLength(Integer postCutOffLength) {
2739                         options.getIntegerOption("PostCutOffLength").set(postCutOffLength);
2740                         return this;
2741                 }
2742
2743                 /**
2744                  * Returns whether Sone requires full access to be even visible.
2745                  *
2746                  * @return {@code true} if Sone requires full access, {@code false}
2747                  *         otherwise
2748                  */
2749                 public boolean isRequireFullAccess() {
2750                         return options.getBooleanOption("RequireFullAccess").get();
2751                 }
2752
2753                 /**
2754                  * Sets whether Sone requires full access to be even visible.
2755                  *
2756                  * @param requireFullAccess
2757                  *            {@code true} if Sone requires full access, {@code false}
2758                  *            otherwise
2759                  */
2760                 public void setRequireFullAccess(Boolean requireFullAccess) {
2761                         options.getBooleanOption("RequireFullAccess").set(requireFullAccess);
2762                 }
2763
2764                 /**
2765                  * Returns the positive trust.
2766                  *
2767                  * @return The positive trust
2768                  */
2769                 public int getPositiveTrust() {
2770                         return options.getIntegerOption("PositiveTrust").get();
2771                 }
2772
2773                 /**
2774                  * Validates the positive trust.
2775                  *
2776                  * @param positiveTrust
2777                  *            The positive trust to validate
2778                  * @return {@code true} if the positive trust was valid, {@code false}
2779                  *         otherwise
2780                  */
2781                 public boolean validatePositiveTrust(Integer positiveTrust) {
2782                         return options.getIntegerOption("PositiveTrust").validate(positiveTrust);
2783                 }
2784
2785                 /**
2786                  * Sets the positive trust.
2787                  *
2788                  * @param positiveTrust
2789                  *            The new positive trust, or {@code null} to restore it to
2790                  *            the default vlaue
2791                  * @return This preferences
2792                  */
2793                 public Preferences setPositiveTrust(Integer positiveTrust) {
2794                         options.getIntegerOption("PositiveTrust").set(positiveTrust);
2795                         return this;
2796                 }
2797
2798                 /**
2799                  * Returns the negative trust.
2800                  *
2801                  * @return The negative trust
2802                  */
2803                 public int getNegativeTrust() {
2804                         return options.getIntegerOption("NegativeTrust").get();
2805                 }
2806
2807                 /**
2808                  * Validates the negative trust.
2809                  *
2810                  * @param negativeTrust
2811                  *            The negative trust to validate
2812                  * @return {@code true} if the negative trust was valid, {@code false}
2813                  *         otherwise
2814                  */
2815                 public boolean validateNegativeTrust(Integer negativeTrust) {
2816                         return options.getIntegerOption("NegativeTrust").validate(negativeTrust);
2817                 }
2818
2819                 /**
2820                  * Sets the negative trust.
2821                  *
2822                  * @param negativeTrust
2823                  *            The negative trust, or {@code null} to restore it to the
2824                  *            default value
2825                  * @return The preferences
2826                  */
2827                 public Preferences setNegativeTrust(Integer negativeTrust) {
2828                         options.getIntegerOption("NegativeTrust").set(negativeTrust);
2829                         return this;
2830                 }
2831
2832                 /**
2833                  * Returns the trust comment. This is the comment that is set in the web
2834                  * of trust when a trust value is assigned to an identity.
2835                  *
2836                  * @return The trust comment
2837                  */
2838                 public String getTrustComment() {
2839                         return options.getStringOption("TrustComment").get();
2840                 }
2841
2842                 /**
2843                  * Sets the trust comment.
2844                  *
2845                  * @param trustComment
2846                  *            The trust comment, or {@code null} to restore it to the
2847                  *            default value
2848                  * @return This preferences
2849                  */
2850                 public Preferences setTrustComment(String trustComment) {
2851                         options.getStringOption("TrustComment").set(trustComment);
2852                         return this;
2853                 }
2854
2855                 /**
2856                  * Returns whether the {@link FcpInterface FCP interface} is currently
2857                  * active.
2858                  *
2859                  * @see FcpInterface#setActive(boolean)
2860                  * @return {@code true} if the FCP interface is currently active,
2861                  *         {@code false} otherwise
2862                  */
2863                 public boolean isFcpInterfaceActive() {
2864                         return options.getBooleanOption("ActivateFcpInterface").get();
2865                 }
2866
2867                 /**
2868                  * Sets whether the {@link FcpInterface FCP interface} is currently
2869                  * active.
2870                  *
2871                  * @see FcpInterface#setActive(boolean)
2872                  * @param fcpInterfaceActive
2873                  *            {@code true} to activate the FCP interface, {@code false}
2874                  *            to deactivate the FCP interface
2875                  * @return This preferences object
2876                  */
2877                 public Preferences setFcpInterfaceActive(boolean fcpInterfaceActive) {
2878                         options.getBooleanOption("ActivateFcpInterface").set(fcpInterfaceActive);
2879                         return this;
2880                 }
2881
2882                 /**
2883                  * Returns the action level for which full access to the FCP interface
2884                  * is required.
2885                  *
2886                  * @return The action level for which full access to the FCP interface
2887                  *         is required
2888                  */
2889                 public FullAccessRequired getFcpFullAccessRequired() {
2890                         return FullAccessRequired.values()[options.getIntegerOption("FcpFullAccessRequired").get()];
2891                 }
2892
2893                 /**
2894                  * Sets the action level for which full access to the FCP interface is
2895                  * required
2896                  *
2897                  * @param fcpFullAccessRequired
2898                  *            The action level
2899                  * @return This preferences
2900                  */
2901                 public Preferences setFcpFullAccessRequired(FullAccessRequired fcpFullAccessRequired) {
2902                         options.getIntegerOption("FcpFullAccessRequired").set((fcpFullAccessRequired != null) ? fcpFullAccessRequired.ordinal() : null);
2903                         return this;
2904                 }
2905
2906                 /**
2907                  * Returns whether Sone should clear its settings on the next restart.
2908                  * In order to be effective, {@link #isReallyClearOnNextRestart()} needs
2909                  * to return {@code true} as well!
2910                  *
2911                  * @return {@code true} if Sone should clear its settings on the next
2912                  *         restart, {@code false} otherwise
2913                  */
2914                 public boolean isClearOnNextRestart() {
2915                         return options.getBooleanOption("ClearOnNextRestart").get();
2916                 }
2917
2918                 /**
2919                  * Sets whether Sone will clear its settings on the next restart.
2920                  *
2921                  * @param clearOnNextRestart
2922                  *            {@code true} if Sone should clear its settings on the next
2923                  *            restart, {@code false} otherwise
2924                  * @return This preferences
2925                  */
2926                 public Preferences setClearOnNextRestart(Boolean clearOnNextRestart) {
2927                         options.getBooleanOption("ClearOnNextRestart").set(clearOnNextRestart);
2928                         return this;
2929                 }
2930
2931                 /**
2932                  * Returns whether Sone should really clear its settings on next
2933                  * restart. This is a confirmation option that needs to be set in
2934                  * addition to {@link #isClearOnNextRestart()} in order to clear Sone’s
2935                  * settings on the next restart.
2936                  *
2937                  * @return {@code true} if Sone should really clear its settings on the
2938                  *         next restart, {@code false} otherwise
2939                  */
2940                 public boolean isReallyClearOnNextRestart() {
2941                         return options.getBooleanOption("ReallyClearOnNextRestart").get();
2942                 }
2943
2944                 /**
2945                  * Sets whether Sone should really clear its settings on the next
2946                  * restart.
2947                  *
2948                  * @param reallyClearOnNextRestart
2949                  *            {@code true} if Sone should really clear its settings on
2950                  *            the next restart, {@code false} otherwise
2951                  * @return This preferences
2952                  */
2953                 public Preferences setReallyClearOnNextRestart(Boolean reallyClearOnNextRestart) {
2954                         options.getBooleanOption("ReallyClearOnNextRestart").set(reallyClearOnNextRestart);
2955                         return this;
2956                 }
2957
2958         }
2959
2960 }