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

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