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

   1 /*
   2  * Sone - Core.java - Copyright © 2010 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28 import java.util.Map.Entry;
  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.Reply;
  44 import net.pterodactylus.sone.data.Sone;
  45 import net.pterodactylus.sone.data.TemporaryImage;
  46 import net.pterodactylus.sone.data.Profile.Field;
  47 import net.pterodactylus.sone.fcp.FcpInterface;
  48 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  49 import net.pterodactylus.sone.freenet.wot.Identity;
  50 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  51 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  52 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  53 import net.pterodactylus.sone.freenet.wot.Trust;
  54 import net.pterodactylus.sone.freenet.wot.WebOfTrustException;
  55 import net.pterodactylus.sone.main.SonePlugin;
  56 import net.pterodactylus.util.config.Configuration;
  57 import net.pterodactylus.util.config.ConfigurationException;
  58 import net.pterodactylus.util.logging.Logging;
  59 import net.pterodactylus.util.number.Numbers;
  60 import net.pterodactylus.util.service.AbstractService;
  61 import net.pterodactylus.util.thread.Ticker;
  62 import net.pterodactylus.util.validation.EqualityValidator;
  63 import net.pterodactylus.util.validation.IntegerRangeValidator;
  64 import net.pterodactylus.util.validation.OrValidator;
  65 import net.pterodactylus.util.validation.Validation;
  66 import net.pterodactylus.util.version.Version;
  67 import freenet.keys.FreenetURI;
  68
  69 /**
  70  * The Sone core.
  71  *
  72  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  73  */
  74 public class Core extends AbstractService implements IdentityListener, UpdateListener, SoneProvider, PostProvider, SoneInsertListener, ImageInsertListener {
  75
  76         /**
  77          * Enumeration for the possible states of a {@link Sone}.
  78          *
  79          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  80          */
  81         public enum SoneStatus {
  82
  83                 /** The Sone is unknown, i.e. not yet downloaded. */
  84                 unknown,
  85
  86                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  87                 idle,
  88
  89                 /** The Sone is currently being inserted. */
  90                 inserting,
  91
  92                 /** The Sone is currently being downloaded. */
  93                 downloading,
  94         }
  95
  96         /** The logger. */
  97         private static final Logger logger = Logging.getLogger(Core.class);
  98
  99         /** The options. */
 100         private final Options options = new Options();
 101
 102         /** The preferences. */
 103         private final Preferences preferences = new Preferences(options);
 104
 105         /** The core listener manager. */
 106         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
 107
 108         /** The configuration. */
 109         private Configuration configuration;
 110
 111         /** Whether we’re currently saving the configuration. */
 112         private boolean storingConfiguration = false;
 113
 114         /** The identity manager. */
 115         private final IdentityManager identityManager;
 116
 117         /** Interface to freenet. */
 118         private final FreenetInterface freenetInterface;
 119
 120         /** The Sone downloader. */
 121         private final SoneDownloader soneDownloader;
 122
 123         /** The image inserter. */
 124         private final ImageInserter imageInserter;
 125
 126         /** Sone downloader thread-pool. */
 127         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10);
 128
 129         /** The update checker. */
 130         private final UpdateChecker updateChecker;
 131
 132         /** The FCP interface. */
 133         private volatile FcpInterface fcpInterface;
 134
 135         /** The Sones’ statuses. */
 136         /* synchronize access on itself. */
 137         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
 138
 139         /** The times Sones were followed. */
 140         private final Map<Sone, Long> soneFollowingTimes = new HashMap<Sone, Long>();
 141
 142         /** Locked local Sones. */
 143         /* synchronize on itself. */
 144         private final Set<Sone> lockedSones = new HashSet<Sone>();
 145
 146         /** Sone inserters. */
 147         /* synchronize access on this on localSones. */
 148         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 149
 150         /** Sone rescuers. */
 151         /* synchronize access on this on localSones. */
 152         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 153
 154         /** All local Sones. */
 155         /* synchronize access on this on itself. */
 156         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 157
 158         /** All remote Sones. */
 159         /* synchronize access on this on itself. */
 160         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 161
 162         /** All new Sones. */
 163         private Set<String> newSones = new HashSet<String>();
 164
 165         /** All known Sones. */
 166         /* synchronize access on {@link #newSones}. */
 167         private Set<String> knownSones = new HashSet<String>();
 168
 169         /** All posts. */
 170         private Map<String, Post> posts = new HashMap<String, Post>();
 171
 172         /** All new posts. */
 173         private Set<String> newPosts = new HashSet<String>();
 174
 175         /** All known posts. */
 176         /* synchronize access on {@link #newPosts}. */
 177         private Set<String> knownPosts = new HashSet<String>();
 178
 179         /** All replies. */
 180         private Map<String, PostReply> replies = new HashMap<String, PostReply>();
 181
 182         /** All new replies. */
 183         private Set<String> newReplies = new HashSet<String>();
 184
 185         /** All known replies. */
 186         private Set<String> knownReplies = new HashSet<String>();
 187
 188         /** All bookmarked posts. */
 189         /* synchronize access on itself. */
 190         private Set<String> bookmarkedPosts = new HashSet<String>();
 191
 192         /** Trusted identities, sorted by own identities. */
 193         private Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 194
 195         /** All known albums. */
 196         private Map<String, Album> albums = new HashMap<String, Album>();
 197
 198         /** All known images. */
 199         private Map<String, Image> images = new HashMap<String, Image>();
 200
 201         /** All temporary images. */
 202         private Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 203
 204         /** Ticker for threads that mark own elements as known. */
 205         private Ticker localElementTicker = new Ticker();
 206
 207         /** The time the configuration was last touched. */
 208         private volatile long lastConfigurationUpdate;
 209
 210         /**
 211          * Creates a new core.
 212          *
 213          * @param configuration
 214          *            The configuration of the core
 215          * @param freenetInterface
 216          *            The freenet interface
 217          * @param identityManager
 218          *            The identity manager
 219          */
 220         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 221                 super("Sone Core");
 222                 this.configuration = configuration;
 223                 this.freenetInterface = freenetInterface;
 224                 this.identityManager = identityManager;
 225                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 226                 this.imageInserter = new ImageInserter(this, freenetInterface);
 227                 this.updateChecker = new UpdateChecker(freenetInterface);
 228         }
 229
 230         //
 231         // LISTENER MANAGEMENT
 232         //
 233
 234         /**
 235          * Adds a new core listener.
 236          *
 237          * @param coreListener
 238          *            The listener to add
 239          */
 240         public void addCoreListener(CoreListener coreListener) {
 241                 coreListenerManager.addListener(coreListener);
 242         }
 243
 244         /**
 245          * Removes a core listener.
 246          *
 247          * @param coreListener
 248          *            The listener to remove
 249          */
 250         public void removeCoreListener(CoreListener coreListener) {
 251                 coreListenerManager.removeListener(coreListener);
 252         }
 253
 254         //
 255         // ACCESSORS
 256         //
 257
 258         /**
 259          * Sets the configuration to use. This will automatically save the current
 260          * configuration to the given configuration.
 261          *
 262          * @param configuration
 263          *            The new configuration to use
 264          */
 265         public void setConfiguration(Configuration configuration) {
 266                 this.configuration = configuration;
 267                 touchConfiguration();
 268         }
 269
 270         /**
 271          * Returns the options used by the core.
 272          *
 273          * @return The options of the core
 274          */
 275         public Preferences getPreferences() {
 276                 return preferences;
 277         }
 278
 279         /**
 280          * Returns the identity manager used by the core.
 281          *
 282          * @return The identity manager
 283          */
 284         public IdentityManager getIdentityManager() {
 285                 return identityManager;
 286         }
 287
 288         /**
 289          * Returns the update checker.
 290          *
 291          * @return The update checker
 292          */
 293         public UpdateChecker getUpdateChecker() {
 294                 return updateChecker;
 295         }
 296
 297         /**
 298          * Sets the FCP interface to use.
 299          *
 300          * @param fcpInterface
 301          *            The FCP interface to use
 302          */
 303         public void setFcpInterface(FcpInterface fcpInterface) {
 304                 this.fcpInterface = fcpInterface;
 305         }
 306
 307         /**
 308          * Returns the status of the given Sone.
 309          *
 310          * @param sone
 311          *            The Sone to get the status for
 312          * @return The status of the Sone
 313          */
 314         public SoneStatus getSoneStatus(Sone sone) {
 315                 synchronized (soneStatuses) {
 316                         return soneStatuses.get(sone);
 317                 }
 318         }
 319
 320         /**
 321          * Sets the status of the given Sone.
 322          *
 323          * @param sone
 324          *            The Sone to set the status of
 325          * @param soneStatus
 326          *            The status to set
 327          */
 328         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 329                 synchronized (soneStatuses) {
 330                         soneStatuses.put(sone, soneStatus);
 331                 }
 332         }
 333
 334         /**
 335          * Returns the Sone rescuer for the given local Sone.
 336          *
 337          * @param sone
 338          *            The local Sone to get the rescuer for
 339          * @return The Sone rescuer for the given Sone
 340          */
 341         public SoneRescuer getSoneRescuer(Sone sone) {
 342                 Validation.begin().isNotNull("Sone", sone).check().is("Local Sone", isLocalSone(sone)).check();
 343                 synchronized (localSones) {
 344                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 345                         if (soneRescuer == null) {
 346                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 347                                 soneRescuers.put(sone, soneRescuer);
 348                                 soneRescuer.start();
 349                         }
 350                         return soneRescuer;
 351                 }
 352         }
 353
 354         /**
 355          * Returns whether the given Sone is currently locked.
 356          *
 357          * @param sone
 358          *            The sone to check
 359          * @return {@code true} if the Sone is locked, {@code false} if it is not
 360          */
 361         public boolean isLocked(Sone sone) {
 362                 synchronized (lockedSones) {
 363                         return lockedSones.contains(sone);
 364                 }
 365         }
 366
 367         /**
 368          * Returns all Sones, remote and local.
 369          *
 370          * @return All Sones
 371          */
 372         public Set<Sone> getSones() {
 373                 Set<Sone> allSones = new HashSet<Sone>();
 374                 allSones.addAll(getLocalSones());
 375                 allSones.addAll(getRemoteSones());
 376                 return allSones;
 377         }
 378
 379         /**
 380          * Returns the Sone with the given ID, regardless whether it’s local or
 381          * remote.
 382          *
 383          * @param id
 384          *            The ID of the Sone to get
 385          * @return The Sone with the given ID, or {@code null} if there is no such
 386          *         Sone
 387          */
 388         public Sone getSone(String id) {
 389                 return getSone(id, true);
 390         }
 391
 392         /**
 393          * Returns the Sone with the given ID, regardless whether it’s local or
 394          * remote.
 395          *
 396          * @param id
 397          *            The ID of the Sone to get
 398          * @param create
 399          *            {@code true} to create a new Sone if none exists,
 400          *            {@code false} to return {@code null} if a Sone with the given
 401          *            ID does not exist
 402          * @return The Sone with the given ID, or {@code null} if there is no such
 403          *         Sone
 404          */
 405         @Override
 406         public Sone getSone(String id, boolean create) {
 407                 if (isLocalSone(id)) {
 408                         return getLocalSone(id);
 409                 }
 410                 return getRemoteSone(id, create);
 411         }
 412
 413         /**
 414          * Checks whether the core knows a Sone with the given ID.
 415          *
 416          * @param id
 417          *            The ID of the Sone
 418          * @return {@code true} if there is a Sone with the given ID, {@code false}
 419          *         otherwise
 420          */
 421         public boolean hasSone(String id) {
 422                 return isLocalSone(id) || isRemoteSone(id);
 423         }
 424
 425         /**
 426          * Returns whether the given Sone is a local Sone.
 427          *
 428          * @param sone
 429          *            The Sone to check for its locality
 430          * @return {@code true} if the given Sone is local, {@code false} otherwise
 431          */
 432         public boolean isLocalSone(Sone sone) {
 433                 synchronized (localSones) {
 434                         return localSones.containsKey(sone.getId());
 435                 }
 436         }
 437
 438         /**
 439          * Returns whether the given ID is the ID of a local Sone.
 440          *
 441          * @param id
 442          *            The Sone ID to check for its locality
 443          * @return {@code true} if the given ID is a local Sone, {@code false}
 444          *         otherwise
 445          */
 446         public boolean isLocalSone(String id) {
 447                 synchronized (localSones) {
 448                         return localSones.containsKey(id);
 449                 }
 450         }
 451
 452         /**
 453          * Returns all local Sones.
 454          *
 455          * @return All local Sones
 456          */
 457         public Set<Sone> getLocalSones() {
 458                 synchronized (localSones) {
 459                         return new HashSet<Sone>(localSones.values());
 460                 }
 461         }
 462
 463         /**
 464          * Returns the local Sone with the given ID.
 465          *
 466          * @param id
 467          *            The ID of the Sone to get
 468          * @return The Sone with the given ID
 469          */
 470         public Sone getLocalSone(String id) {
 471                 return getLocalSone(id, true);
 472         }
 473
 474         /**
 475          * Returns the local Sone with the given ID, optionally creating a new Sone.
 476          *
 477          * @param id
 478          *            The ID of the Sone
 479          * @param create
 480          *            {@code true} to create a new Sone if none exists,
 481          *            {@code false} to return null if none exists
 482          * @return The Sone with the given ID, or {@code null}
 483          */
 484         public Sone getLocalSone(String id, boolean create) {
 485                 synchronized (localSones) {
 486                         Sone sone = localSones.get(id);
 487                         if ((sone == null) && create) {
 488                                 sone = new Sone(id);
 489                                 localSones.put(id, sone);
 490                                 setSoneStatus(sone, SoneStatus.unknown);
 491                         }
 492                         return sone;
 493                 }
 494         }
 495
 496         /**
 497          * Returns all remote Sones.
 498          *
 499          * @return All remote Sones
 500          */
 501         public Set<Sone> getRemoteSones() {
 502                 synchronized (remoteSones) {
 503                         return new HashSet<Sone>(remoteSones.values());
 504                 }
 505         }
 506
 507         /**
 508          * Returns the remote Sone with the given ID.
 509          *
 510          * @param id
 511          *            The ID of the remote Sone to get
 512          * @return The Sone with the given ID
 513          */
 514         public Sone getRemoteSone(String id) {
 515                 return getRemoteSone(id, true);
 516         }
 517
 518         /**
 519          * Returns the remote Sone with the given ID.
 520          *
 521          * @param id
 522          *            The ID of the remote Sone to get
 523          * @param create
 524          *            {@code true} to always create a Sone, {@code false} to return
 525          *            {@code null} if no Sone with the given ID exists
 526          * @return The Sone with the given ID
 527          */
 528         public Sone getRemoteSone(String id, boolean create) {
 529                 synchronized (remoteSones) {
 530                         Sone sone = remoteSones.get(id);
 531                         if ((sone == null) && create) {
 532                                 sone = new Sone(id);
 533                                 remoteSones.put(id, sone);
 534                                 setSoneStatus(sone, SoneStatus.unknown);
 535                         }
 536                         return sone;
 537                 }
 538         }
 539
 540         /**
 541          * Returns whether the given Sone is a remote Sone.
 542          *
 543          * @param sone
 544          *            The Sone to check
 545          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 546          *         otherwise
 547          */
 548         public boolean isRemoteSone(Sone sone) {
 549                 synchronized (remoteSones) {
 550                         return remoteSones.containsKey(sone.getId());
 551                 }
 552         }
 553
 554         /**
 555          * Returns whether the Sone with the given ID is a remote Sone.
 556          *
 557          * @param id
 558          *            The ID of the Sone to check
 559          * @return {@code true} if the Sone with the given ID is a remote Sone,
 560          *         {@code false} otherwise
 561          */
 562         public boolean isRemoteSone(String id) {
 563                 synchronized (remoteSones) {
 564                         return remoteSones.containsKey(id);
 565                 }
 566         }
 567
 568         /**
 569          * Returns whether the Sone with the given ID is a new Sone.
 570          *
 571          * @param soneId
 572          *            The ID of the sone to check for
 573          * @return {@code true} if the given Sone is new, false otherwise
 574          */
 575         public boolean isNewSone(String soneId) {
 576                 synchronized (newSones) {
 577                         return !knownSones.contains(soneId) && newSones.contains(soneId);
 578                 }
 579         }
 580
 581         /**
 582          * Returns whether the given Sone has been modified.
 583          *
 584          * @param sone
 585          *            The Sone to check for modifications
 586          * @return {@code true} if a modification has been detected in the Sone,
 587          *         {@code false} otherwise
 588          */
 589         public boolean isModifiedSone(Sone sone) {
 590                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 591         }
 592
 593         /**
 594          * Returns the time when the given was first followed by any local Sone.
 595          *
 596          * @param sone
 597          *            The Sone to get the time for
 598          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 599          *         been followed, or {@link Long#MAX_VALUE}
 600          */
 601         public long getSoneFollowingTime(Sone sone) {
 602                 synchronized (soneFollowingTimes) {
 603                         if (soneFollowingTimes.containsKey(sone)) {
 604                                 return soneFollowingTimes.get(sone);
 605                         }
 606                         return Long.MAX_VALUE;
 607                 }
 608         }
 609
 610         /**
 611          * Returns whether the target Sone is trusted by the origin Sone.
 612          *
 613          * @param origin
 614          *            The origin Sone
 615          * @param target
 616          *            The target Sone
 617          * @return {@code true} if the target Sone is trusted by the origin Sone
 618          */
 619         public boolean isSoneTrusted(Sone origin, Sone target) {
 620                 Validation.begin().isNotNull("Origin", origin).isNotNull("Target", target).check().isInstanceOf("Origin’s OwnIdentity", origin.getIdentity(), OwnIdentity.class).check();
 621                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 622         }
 623
 624         /**
 625          * Returns the post with the given ID.
 626          *
 627          * @param postId
 628          *            The ID of the post to get
 629          * @return The post with the given ID, or a new post with the given ID
 630          */
 631         public Post getPost(String postId) {
 632                 return getPost(postId, true);
 633         }
 634
 635         /**
 636          * Returns the post with the given ID, optionally creating a new post.
 637          *
 638          * @param postId
 639          *            The ID of the post to get
 640          * @param create
 641          *            {@code true} it create a new post if no post with the given ID
 642          *            exists, {@code false} to return {@code null}
 643          * @return The post, or {@code null} if there is no such post
 644          */
 645         @Override
 646         public Post getPost(String postId, boolean create) {
 647                 synchronized (posts) {
 648                         Post post = posts.get(postId);
 649                         if ((post == null) && create) {
 650                                 post = new Post(postId);
 651                                 posts.put(postId, post);
 652                         }
 653                         return post;
 654                 }
 655         }
 656
 657         /**
 658          * Returns whether the given post ID is new.
 659          *
 660          * @param postId
 661          *            The post ID
 662          * @return {@code true} if the post is considered to be new, {@code false}
 663          *         otherwise
 664          */
 665         public boolean isNewPost(String postId) {
 666                 synchronized (newPosts) {
 667                         return !knownPosts.contains(postId) && newPosts.contains(postId);
 668                 }
 669         }
 670
 671         /**
 672          * Returns all posts that have the given Sone as recipient.
 673          *
 674          * @see Post#getRecipient()
 675          * @param recipient
 676          *            The recipient of the posts
 677          * @return All posts that have the given Sone as recipient
 678          */
 679         public Set<Post> getDirectedPosts(Sone recipient) {
 680                 Validation.begin().isNotNull("Recipient", recipient).check();
 681                 Set<Post> directedPosts = new HashSet<Post>();
 682                 synchronized (posts) {
 683                         for (Post post : posts.values()) {
 684                                 if (recipient.equals(post.getRecipient())) {
 685                                         directedPosts.add(post);
 686                                 }
 687                         }
 688                 }
 689                 return directedPosts;
 690         }
 691
 692         /**
 693          * Returns the reply with the given ID. If there is no reply with the given
 694          * ID yet, a new one is created.
 695          *
 696          * @param replyId
 697          *            The ID of the reply to get
 698          * @return The reply
 699          */
 700         public PostReply getReply(String replyId) {
 701                 return getReply(replyId, true);
 702         }
 703
 704         /**
 705          * Returns the reply with the given ID. If there is no reply with the given
 706          * ID yet, a new one is created, unless {@code create} is false in which
 707          * case {@code null} is returned.
 708          *
 709          * @param replyId
 710          *            The ID of the reply to get
 711          * @param create
 712          *            {@code true} to always return a {@link Reply}, {@code false}
 713          *            to return {@code null} if no reply can be found
 714          * @return The reply, or {@code null} if there is no such reply
 715          */
 716         public PostReply getReply(String replyId, boolean create) {
 717                 synchronized (replies) {
 718                         PostReply reply = replies.get(replyId);
 719                         if (create && (reply == null)) {
 720                                 reply = new PostReply(replyId);
 721                                 replies.put(replyId, reply);
 722                         }
 723                         return reply;
 724                 }
 725         }
 726
 727         /**
 728          * Returns all replies for the given post, order ascending by time.
 729          *
 730          * @param post
 731          *            The post to get all replies for
 732          * @return All replies for the given post
 733          */
 734         public List<PostReply> getReplies(Post post) {
 735                 Set<Sone> sones = getSones();
 736                 List<PostReply> replies = new ArrayList<PostReply>();
 737                 for (Sone sone : sones) {
 738                         for (PostReply reply : sone.getReplies()) {
 739                                 if (reply.getPost().equals(post)) {
 740                                         replies.add(reply);
 741                                 }
 742                         }
 743                 }
 744                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 745                 return replies;
 746         }
 747
 748         /**
 749          * Returns whether the reply with the given ID is new.
 750          *
 751          * @param replyId
 752          *            The ID of the reply to check
 753          * @return {@code true} if the reply is considered to be new, {@code false}
 754          *         otherwise
 755          */
 756         public boolean isNewReply(String replyId) {
 757                 synchronized (newReplies) {
 758                         return !knownReplies.contains(replyId) && newReplies.contains(replyId);
 759                 }
 760         }
 761
 762         /**
 763          * Returns all Sones that have liked the given post.
 764          *
 765          * @param post
 766          *            The post to get the liking Sones for
 767          * @return The Sones that like the given post
 768          */
 769         public Set<Sone> getLikes(Post post) {
 770                 Set<Sone> sones = new HashSet<Sone>();
 771                 for (Sone sone : getSones()) {
 772                         if (sone.getLikedPostIds().contains(post.getId())) {
 773                                 sones.add(sone);
 774                         }
 775                 }
 776                 return sones;
 777         }
 778
 779         /**
 780          * Returns all Sones that have liked the given reply.
 781          *
 782          * @param reply
 783          *            The reply to get the liking Sones for
 784          * @return The Sones that like the given reply
 785          */
 786         public Set<Sone> getLikes(PostReply reply) {
 787                 Set<Sone> sones = new HashSet<Sone>();
 788                 for (Sone sone : getSones()) {
 789                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 790                                 sones.add(sone);
 791                         }
 792                 }
 793                 return sones;
 794         }
 795
 796         /**
 797          * Returns whether the given post is bookmarked.
 798          *
 799          * @param post
 800          *            The post to check
 801          * @return {@code true} if the given post is bookmarked, {@code false}
 802          *         otherwise
 803          */
 804         public boolean isBookmarked(Post post) {
 805                 return isPostBookmarked(post.getId());
 806         }
 807
 808         /**
 809          * Returns whether the post with the given ID is bookmarked.
 810          *
 811          * @param id
 812          *            The ID of the post to check
 813          * @return {@code true} if the post with the given ID is bookmarked,
 814          *         {@code false} otherwise
 815          */
 816         public boolean isPostBookmarked(String id) {
 817                 synchronized (bookmarkedPosts) {
 818                         return bookmarkedPosts.contains(id);
 819                 }
 820         }
 821
 822         /**
 823          * Returns all currently known bookmarked posts.
 824          *
 825          * @return All bookmarked posts
 826          */
 827         public Set<Post> getBookmarkedPosts() {
 828                 Set<Post> posts = new HashSet<Post>();
 829                 synchronized (bookmarkedPosts) {
 830                         for (String bookmarkedPostId : bookmarkedPosts) {
 831                                 Post post = getPost(bookmarkedPostId, false);
 832                                 if (post != null) {
 833                                         posts.add(post);
 834                                 }
 835                         }
 836                 }
 837                 return posts;
 838         }
 839
 840         /**
 841          * Returns the album with the given ID, creating a new album if no album
 842          * with the given ID can be found.
 843          *
 844          * @param albumId
 845          *            The ID of the album
 846          * @return The album with the given ID
 847          */
 848         public Album getAlbum(String albumId) {
 849                 return getAlbum(albumId, true);
 850         }
 851
 852         /**
 853          * Returns the album with the given ID, optionally creating a new album if
 854          * an album with the given ID can not be found.
 855          *
 856          * @param albumId
 857          *            The ID of the album
 858          * @param create
 859          *            {@code true} to create a new album if none exists for the
 860          *            given ID
 861          * @return The album with the given ID, or {@code null} if no album with the
 862          *         given ID exists and {@code create} is {@code false}
 863          */
 864         public Album getAlbum(String albumId, boolean create) {
 865                 synchronized (albums) {
 866                         Album album = albums.get(albumId);
 867                         if (create && (album == null)) {
 868                                 album = new Album(albumId);
 869                                 albums.put(albumId, album);
 870                         }
 871                         return album;
 872                 }
 873         }
 874
 875         /**
 876          * Returns the image with the given ID, creating it if necessary.
 877          *
 878          * @param imageId
 879          *            The ID of the image
 880          * @return The image with the given ID
 881          */
 882         public Image getImage(String imageId) {
 883                 return getImage(imageId, true);
 884         }
 885
 886         /**
 887          * Returns the image with the given ID, optionally creating it if it does
 888          * not exist.
 889          *
 890          * @param imageId
 891          *            The ID of the image
 892          * @param create
 893          *            {@code true} to create an image if none exists with the given
 894          *            ID
 895          * @return The image with the given ID, or {@code null} if none exists and
 896          *         none was created
 897          */
 898         public Image getImage(String imageId, boolean create) {
 899                 synchronized (images) {
 900                         Image image = images.get(imageId);
 901                         if (create && (image == null)) {
 902                                 image = new Image(imageId);
 903                                 images.put(imageId, image);
 904                         }
 905                         return image;
 906                 }
 907         }
 908
 909         /**
 910          * Returns the temporary image with the given ID.
 911          *
 912          * @param imageId
 913          *            The ID of the temporary image
 914          * @return The temporary image, or {@code null} if there is no temporary
 915          *         image with the given ID
 916          */
 917         public TemporaryImage getTemporaryImage(String imageId) {
 918                 synchronized (temporaryImages) {
 919                         return temporaryImages.get(imageId);
 920                 }
 921         }
 922
 923         //
 924         // ACTIONS
 925         //
 926
 927         /**
 928          * Locks the given Sone. A locked Sone will not be inserted by
 929          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 930          * again.
 931          *
 932          * @param sone
 933          *            The sone to lock
 934          */
 935         public void lockSone(Sone sone) {
 936                 synchronized (lockedSones) {
 937                         if (lockedSones.add(sone)) {
 938                                 coreListenerManager.fireSoneLocked(sone);
 939                         }
 940                 }
 941         }
 942
 943         /**
 944          * Unlocks the given Sone.
 945          *
 946          * @see #lockSone(Sone)
 947          * @param sone
 948          *            The sone to unlock
 949          */
 950         public void unlockSone(Sone sone) {
 951                 synchronized (lockedSones) {
 952                         if (lockedSones.remove(sone)) {
 953                                 coreListenerManager.fireSoneUnlocked(sone);
 954                         }
 955                 }
 956         }
 957
 958         /**
 959          * Adds a local Sone from the given ID which has to be the ID of an own
 960          * identity.
 961          *
 962          * @param id
 963          *            The ID of an own identity to add a Sone for
 964          * @return The added (or already existing) Sone
 965          */
 966         public Sone addLocalSone(String id) {
 967                 synchronized (localSones) {
 968                         if (localSones.containsKey(id)) {
 969                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 970                                 return localSones.get(id);
 971                         }
 972                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 973                         if (ownIdentity == null) {
 974                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 975                                 return null;
 976                         }
 977                         return addLocalSone(ownIdentity);
 978                 }
 979         }
 980
 981         /**
 982          * Adds a local Sone from the given own identity.
 983          *
 984          * @param ownIdentity
 985          *            The own identity to create a Sone from
 986          * @return The added (or already existing) Sone
 987          */
 988         public Sone addLocalSone(OwnIdentity ownIdentity) {
 989                 if (ownIdentity == null) {
 990                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 991                         return null;
 992                 }
 993                 synchronized (localSones) {
 994                         final Sone sone;
 995                         try {
 996                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 997                         } catch (MalformedURLException mue1) {
 998                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 999                                 return null;
1000                         }
1001                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
1002                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
1003                         /* TODO - load posts ’n stuff */
1004                         localSones.put(ownIdentity.getId(), sone);
1005                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
1006                         soneInserter.addSoneInsertListener(this);
1007                         soneInserters.put(sone, soneInserter);
1008                         setSoneStatus(sone, SoneStatus.idle);
1009                         loadSone(sone);
1010                         soneInserter.start();
1011                         return sone;
1012                 }
1013         }
1014
1015         /**
1016          * Creates a new Sone for the given own identity.
1017          *
1018          * @param ownIdentity
1019          *            The own identity to create a Sone for
1020          * @return The created Sone
1021          */
1022         public Sone createSone(OwnIdentity ownIdentity) {
1023                 try {
1024                         ownIdentity.addContext("Sone");
1025                 } catch (WebOfTrustException wote1) {
1026                         logger.log(Level.SEVERE, "Could not add “Sone” context to own identity: " + ownIdentity, wote1);
1027                         return null;
1028                 }
1029                 Sone sone = addLocalSone(ownIdentity);
1030                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1031                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1032                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1033                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1034                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1035                 sone.addFriend("nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
1036                 touchConfiguration();
1037                 return sone;
1038         }
1039
1040         /**
1041          * Adds the Sone of the given identity.
1042          *
1043          * @param identity
1044          *            The identity whose Sone to add
1045          * @return The added or already existing Sone
1046          */
1047         public Sone addRemoteSone(Identity identity) {
1048                 if (identity == null) {
1049                         logger.log(Level.WARNING, "Given Identity is null!");
1050                         return null;
1051                 }
1052                 synchronized (remoteSones) {
1053                         final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
1054                         boolean newSone = sone.getRequestUri() == null;
1055                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
1056                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
1057                         if (newSone) {
1058                                 synchronized (newSones) {
1059                                         newSone = !knownSones.contains(sone.getId());
1060                                         if (newSone) {
1061                                                 newSones.add(sone.getId());
1062                                         }
1063                                 }
1064                                 if (newSone) {
1065                                         coreListenerManager.fireNewSoneFound(sone);
1066                                         for (Sone localSone : getLocalSones()) {
1067                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
1068                                                         localSone.addFriend(sone.getId());
1069                                                         touchConfiguration();
1070                                                 }
1071                                         }
1072                                 }
1073                         }
1074                         remoteSones.put(identity.getId(), sone);
1075                         soneDownloader.addSone(sone);
1076                         setSoneStatus(sone, SoneStatus.unknown);
1077                         soneDownloaders.execute(new Runnable() {
1078
1079                                 @Override
1080                                 @SuppressWarnings("synthetic-access")
1081                                 public void run() {
1082                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
1083                                 }
1084
1085                         });
1086                         return sone;
1087                 }
1088         }
1089
1090         /**
1091          * Lets the given local Sone follow the Sone with the given ID.
1092          *
1093          * @param sone
1094          *            The local Sone that should follow another Sone
1095          * @param soneId
1096          *            The ID of the Sone to follow
1097          */
1098         public void followSone(Sone sone, String soneId) {
1099                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
1100                 followSone(sone, getSone(soneId));
1101         }
1102
1103         /**
1104          * Lets the given local Sone follow the other given Sone. If the given Sone
1105          * was not followed by any local Sone before, this will mark all elements of
1106          * the followed Sone as read that have been created before the current
1107          * moment.
1108          *
1109          * @param sone
1110          *            The local Sone that should follow the other Sone
1111          * @param followedSone
1112          *            The Sone that should be followed
1113          */
1114         public void followSone(Sone sone, Sone followedSone) {
1115                 Validation.begin().isNotNull("Sone", sone).isNotNull("Followed Sone", followedSone).check();
1116                 sone.addFriend(followedSone.getId());
1117                 synchronized (soneFollowingTimes) {
1118                         if (!soneFollowingTimes.containsKey(followedSone)) {
1119                                 long now = System.currentTimeMillis();
1120                                 soneFollowingTimes.put(followedSone, now);
1121                                 for (Post post : followedSone.getPosts()) {
1122                                         if (post.getTime() < now) {
1123                                                 markPostKnown(post);
1124                                         }
1125                                 }
1126                                 for (PostReply reply : followedSone.getReplies()) {
1127                                         if (reply.getTime() < now) {
1128                                                 markReplyKnown(reply);
1129                                         }
1130                                 }
1131                         }
1132                 }
1133                 touchConfiguration();
1134         }
1135
1136         /**
1137          * Lets the given local Sone unfollow the Sone with the given ID.
1138          *
1139          * @param sone
1140          *            The local Sone that should unfollow another Sone
1141          * @param soneId
1142          *            The ID of the Sone being unfollowed
1143          */
1144         public void unfollowSone(Sone sone, String soneId) {
1145                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
1146                 unfollowSone(sone, getSone(soneId, false));
1147         }
1148
1149         /**
1150          * Lets the given local Sone unfollow the other given Sone. If the given
1151          * local Sone is the last local Sone that followed the given Sone, its
1152          * following time will be removed.
1153          *
1154          * @param sone
1155          *            The local Sone that should unfollow another Sone
1156          * @param unfollowedSone
1157          *            The Sone being unfollowed
1158          */
1159         public void unfollowSone(Sone sone, Sone unfollowedSone) {
1160                 Validation.begin().isNotNull("Sone", sone).isNotNull("Unfollowed Sone", unfollowedSone).check();
1161                 sone.removeFriend(unfollowedSone.getId());
1162                 boolean unfollowedSoneStillFollowed = false;
1163                 for (Sone localSone : getLocalSones()) {
1164                         unfollowedSoneStillFollowed |= localSone.hasFriend(unfollowedSone.getId());
1165                 }
1166                 if (!unfollowedSoneStillFollowed) {
1167                         synchronized (soneFollowingTimes) {
1168                                 soneFollowingTimes.remove(unfollowedSone);
1169                         }
1170                 }
1171                 touchConfiguration();
1172         }
1173
1174         /**
1175          * Retrieves the trust relationship from the origin to the target. If the
1176          * trust relationship can not be retrieved, {@code null} is returned.
1177          *
1178          * @see Identity#getTrust(OwnIdentity)
1179          * @param origin
1180          *            The origin of the trust tree
1181          * @param target
1182          *            The target of the trust
1183          * @return The trust relationship
1184          */
1185         public Trust getTrust(Sone origin, Sone target) {
1186                 if (!isLocalSone(origin)) {
1187                         logger.log(Level.WARNING, "Tried to get trust from remote Sone: %s", origin);
1188                         return null;
1189                 }
1190                 return target.getIdentity().getTrust((OwnIdentity) origin.getIdentity());
1191         }
1192
1193         /**
1194          * Sets the trust value of the given origin Sone for the target Sone.
1195          *
1196          * @param origin
1197          *            The origin Sone
1198          * @param target
1199          *            The target Sone
1200          * @param trustValue
1201          *            The trust value (from {@code -100} to {@code 100})
1202          */
1203         public void setTrust(Sone origin, Sone target, int trustValue) {
1204                 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();
1205                 try {
1206                         ((OwnIdentity) origin.getIdentity()).setTrust(target.getIdentity(), trustValue, preferences.getTrustComment());
1207                 } catch (WebOfTrustException wote1) {
1208                         logger.log(Level.WARNING, "Could not set trust for Sone: " + target, wote1);
1209                 }
1210         }
1211
1212         /**
1213          * Removes any trust assignment for the given target Sone.
1214          *
1215          * @param origin
1216          *            The trust origin
1217          * @param target
1218          *            The trust target
1219          */
1220         public void removeTrust(Sone origin, Sone target) {
1221                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
1222                 try {
1223                         ((OwnIdentity) origin.getIdentity()).removeTrust(target.getIdentity());
1224                 } catch (WebOfTrustException wote1) {
1225                         logger.log(Level.WARNING, "Could not remove trust for Sone: " + target, wote1);
1226                 }
1227         }
1228
1229         /**
1230          * Assigns the configured positive trust value for the given target.
1231          *
1232          * @param origin
1233          *            The trust origin
1234          * @param target
1235          *            The trust target
1236          */
1237         public void trustSone(Sone origin, Sone target) {
1238                 setTrust(origin, target, preferences.getPositiveTrust());
1239         }
1240
1241         /**
1242          * Assigns the configured negative trust value for the given target.
1243          *
1244          * @param origin
1245          *            The trust origin
1246          * @param target
1247          *            The trust target
1248          */
1249         public void distrustSone(Sone origin, Sone target) {
1250                 setTrust(origin, target, preferences.getNegativeTrust());
1251         }
1252
1253         /**
1254          * Removes the trust assignment for the given target.
1255          *
1256          * @param origin
1257          *            The trust origin
1258          * @param target
1259          *            The trust target
1260          */
1261         public void untrustSone(Sone origin, Sone target) {
1262                 removeTrust(origin, target);
1263         }
1264
1265         /**
1266          * Updates the stored Sone with the given Sone.
1267          *
1268          * @param sone
1269          *            The updated Sone
1270          */
1271         public void updateSone(Sone sone) {
1272                 updateSone(sone, false);
1273         }
1274
1275         /**
1276          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
1277          * {@code true}, an older Sone than the current Sone can be given to restore
1278          * an old state.
1279          *
1280          * @param sone
1281          *            The Sone to update
1282          * @param soneRescueMode
1283          *            {@code true} if the stored Sone should be updated regardless
1284          *            of the age of the given Sone
1285          */
1286         public void updateSone(Sone sone, boolean soneRescueMode) {
1287                 if (hasSone(sone.getId())) {
1288                         Sone storedSone = getSone(sone.getId());
1289                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1290                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
1291                                 return;
1292                         }
1293                         synchronized (posts) {
1294                                 if (!soneRescueMode) {
1295                                         for (Post post : storedSone.getPosts()) {
1296                                                 posts.remove(post.getId());
1297                                                 if (!sone.getPosts().contains(post)) {
1298                                                         coreListenerManager.firePostRemoved(post);
1299                                                 }
1300                                         }
1301                                 }
1302                                 List<Post> storedPosts = storedSone.getPosts();
1303                                 synchronized (newPosts) {
1304                                         for (Post post : sone.getPosts()) {
1305                                                 post.setSone(storedSone);
1306                                                 if (!storedPosts.contains(post) && !knownPosts.contains(post.getId())) {
1307                                                         newPosts.add(post.getId());
1308                                                         coreListenerManager.fireNewPostFound(post);
1309                                                 }
1310                                                 posts.put(post.getId(), post);
1311                                         }
1312                                 }
1313                         }
1314                         synchronized (replies) {
1315                                 if (!soneRescueMode) {
1316                                         for (PostReply reply : storedSone.getReplies()) {
1317                                                 replies.remove(reply.getId());
1318                                                 if (!sone.getReplies().contains(reply)) {
1319                                                         coreListenerManager.fireReplyRemoved(reply);
1320                                                 }
1321                                         }
1322                                 }
1323                                 Set<PostReply> storedReplies = storedSone.getReplies();
1324                                 synchronized (newReplies) {
1325                                         for (PostReply reply : sone.getReplies()) {
1326                                                 reply.setSone(storedSone);
1327                                                 if (!storedReplies.contains(reply) && !knownReplies.contains(reply.getId())) {
1328                                                         newReplies.add(reply.getId());
1329                                                         coreListenerManager.fireNewReplyFound(reply);
1330                                                 }
1331                                                 replies.put(reply.getId(), reply);
1332                                         }
1333                                 }
1334                         }
1335                         synchronized (albums) {
1336                                 synchronized (images) {
1337                                         for (Album album : storedSone.getAlbums()) {
1338                                                 albums.remove(album.getId());
1339                                                 for (Image image : album.getImages()) {
1340                                                         images.remove(image.getId());
1341                                                 }
1342                                         }
1343                                         for (Album album : sone.getAlbums()) {
1344                                                 albums.put(album.getId(), album);
1345                                                 for (Image image : album.getImages()) {
1346                                                         images.put(image.getId(), image);
1347                                                 }
1348                                         }
1349                                 }
1350                         }
1351                         synchronized (storedSone) {
1352                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1353                                         storedSone.setTime(sone.getTime());
1354                                 }
1355                                 storedSone.setClient(sone.getClient());
1356                                 storedSone.setProfile(sone.getProfile());
1357                                 if (soneRescueMode) {
1358                                         for (Post post : sone.getPosts()) {
1359                                                 storedSone.addPost(post);
1360                                         }
1361                                         for (PostReply reply : sone.getReplies()) {
1362                                                 storedSone.addReply(reply);
1363                                         }
1364                                         for (String likedPostId : sone.getLikedPostIds()) {
1365                                                 storedSone.addLikedPostId(likedPostId);
1366                                         }
1367                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1368                                                 storedSone.addLikedReplyId(likedReplyId);
1369                                         }
1370                                         for (Album album : sone.getAlbums()) {
1371                                                 storedSone.addAlbum(album);
1372                                         }
1373                                 } else {
1374                                         storedSone.setPosts(sone.getPosts());
1375                                         storedSone.setReplies(sone.getReplies());
1376                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1377                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1378                                         storedSone.setAlbums(sone.getAlbums());
1379                                 }
1380                                 storedSone.setLatestEdition(sone.getLatestEdition());
1381                         }
1382                 }
1383         }
1384
1385         /**
1386          * Deletes the given Sone. This will remove the Sone from the
1387          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
1388          * and remove the context from its identity.
1389          *
1390          * @param sone
1391          *            The Sone to delete
1392          */
1393         public void deleteSone(Sone sone) {
1394                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1395                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
1396                         return;
1397                 }
1398                 synchronized (localSones) {
1399                         if (!localSones.containsKey(sone.getId())) {
1400                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
1401                                 return;
1402                         }
1403                         localSones.remove(sone.getId());
1404                         SoneInserter soneInserter = soneInserters.remove(sone);
1405                         soneInserter.removeSoneInsertListener(this);
1406                         soneInserter.stop();
1407                 }
1408                 try {
1409                         ((OwnIdentity) sone.getIdentity()).removeContext("Sone");
1410                         ((OwnIdentity) sone.getIdentity()).removeProperty("Sone.LatestEdition");
1411                 } catch (WebOfTrustException wote1) {
1412                         logger.log(Level.WARNING, "Could not remove context and properties from Sone: " + sone, wote1);
1413                 }
1414                 try {
1415                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1416                 } catch (ConfigurationException ce1) {
1417                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1418                 }
1419         }
1420
1421         /**
1422          * Marks the given Sone as known. If the Sone was {@link #isNewPost(String)
1423          * new} before, a {@link CoreListener#markSoneKnown(Sone)} event is fired.
1424          *
1425          * @param sone
1426          *            The Sone to mark as known
1427          */
1428         public void markSoneKnown(Sone sone) {
1429                 synchronized (newSones) {
1430                         if (newSones.remove(sone.getId())) {
1431                                 knownSones.add(sone.getId());
1432                                 coreListenerManager.fireMarkSoneKnown(sone);
1433                                 touchConfiguration();
1434                         }
1435                 }
1436         }
1437
1438         /**
1439          * Loads and updates the given Sone from the configuration. If any error is
1440          * encountered, loading is aborted and the given Sone is not changed.
1441          *
1442          * @param sone
1443          *            The Sone to load and update
1444          */
1445         public void loadSone(Sone sone) {
1446                 if (!isLocalSone(sone)) {
1447                         logger.log(Level.FINE, "Tried to load non-local Sone: %s", sone);
1448                         return;
1449                 }
1450
1451                 /* initialize options. */
1452                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1453                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1454                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1455                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1456                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1457
1458                 /* load Sone. */
1459                 String sonePrefix = "Sone/" + sone.getId();
1460                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1461                 if (soneTime == null) {
1462                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1463                         return;
1464                 }
1465                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1466
1467                 /* load profile. */
1468                 Profile profile = new Profile();
1469                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1470                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1471                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1472                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1473                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1474                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1475
1476                 /* load profile fields. */
1477                 while (true) {
1478                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1479                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1480                         if (fieldName == null) {
1481                                 break;
1482                         }
1483                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1484                         profile.addField(fieldName).setValue(fieldValue);
1485                 }
1486
1487                 /* load posts. */
1488                 Set<Post> posts = new HashSet<Post>();
1489                 while (true) {
1490                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1491                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1492                         if (postId == null) {
1493                                 break;
1494                         }
1495                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1496                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1497                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1498                         if ((postTime == 0) || (postText == null)) {
1499                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1500                                 return;
1501                         }
1502                         Post post = getPost(postId).setSone(sone).setTime(postTime).setText(postText);
1503                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1504                                 post.setRecipient(getSone(postRecipientId));
1505                         }
1506                         posts.add(post);
1507                 }
1508
1509                 /* load replies. */
1510                 Set<PostReply> replies = new HashSet<PostReply>();
1511                 while (true) {
1512                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1513                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1514                         if (replyId == null) {
1515                                 break;
1516                         }
1517                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1518                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1519                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1520                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1521                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1522                                 return;
1523                         }
1524                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
1525                 }
1526
1527                 /* load post likes. */
1528                 Set<String> likedPostIds = new HashSet<String>();
1529                 while (true) {
1530                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1531                         if (likedPostId == null) {
1532                                 break;
1533                         }
1534                         likedPostIds.add(likedPostId);
1535                 }
1536
1537                 /* load reply likes. */
1538                 Set<String> likedReplyIds = new HashSet<String>();
1539                 while (true) {
1540                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1541                         if (likedReplyId == null) {
1542                                 break;
1543                         }
1544                         likedReplyIds.add(likedReplyId);
1545                 }
1546
1547                 /* load friends. */
1548                 Set<String> friends = new HashSet<String>();
1549                 while (true) {
1550                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1551                         if (friendId == null) {
1552                                 break;
1553                         }
1554                         friends.add(friendId);
1555                 }
1556
1557                 /* load albums. */
1558                 List<Album> topLevelAlbums = new ArrayList<Album>();
1559                 int albumCounter = 0;
1560                 while (true) {
1561                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1562                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1563                         if (albumId == null) {
1564                                 break;
1565                         }
1566                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1567                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1568                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1569                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1570                         if ((albumTitle == null) || (albumDescription == null)) {
1571                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1572                                 return;
1573                         }
1574                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1575                         if (albumParentId != null) {
1576                                 Album parentAlbum = getAlbum(albumParentId, false);
1577                                 if (parentAlbum == null) {
1578                                         logger.log(Level.WARNING, "Invalid parent album ID: " + albumParentId);
1579                                         return;
1580                                 }
1581                                 parentAlbum.addAlbum(album);
1582                         } else {
1583                                 topLevelAlbums.add(album);
1584                         }
1585                 }
1586
1587                 /* load images. */
1588                 int imageCounter = 0;
1589                 while (true) {
1590                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1591                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1592                         if (imageId == null) {
1593                                 break;
1594                         }
1595                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1596                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1597                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1598                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1599                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1600                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1601                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1602                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1603                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1604                                 return;
1605                         }
1606                         Album album = getAlbum(albumId, false);
1607                         if (album == null) {
1608                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1609                                 return;
1610                         }
1611                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1612                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1613                         album.addImage(image);
1614                 }
1615
1616                 /* load options. */
1617                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1618                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1619                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1620                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1621                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1622
1623                 /* if we’re still here, Sone was loaded successfully. */
1624                 synchronized (sone) {
1625                         sone.setTime(soneTime);
1626                         sone.setProfile(profile);
1627                         sone.setPosts(posts);
1628                         sone.setReplies(replies);
1629                         sone.setLikePostIds(likedPostIds);
1630                         sone.setLikeReplyIds(likedReplyIds);
1631                         sone.setFriends(friends);
1632                         sone.setAlbums(topLevelAlbums);
1633                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1634                 }
1635                 synchronized (newSones) {
1636                         for (String friend : friends) {
1637                                 knownSones.add(friend);
1638                         }
1639                 }
1640                 synchronized (newPosts) {
1641                         for (Post post : posts) {
1642                                 knownPosts.add(post.getId());
1643                         }
1644                 }
1645                 synchronized (newReplies) {
1646                         for (PostReply reply : replies) {
1647                                 knownReplies.add(reply.getId());
1648                         }
1649                 }
1650         }
1651
1652         /**
1653          * Creates a new post.
1654          *
1655          * @param sone
1656          *            The Sone that creates the post
1657          * @param text
1658          *            The text of the post
1659          * @return The created post
1660          */
1661         public Post createPost(Sone sone, String text) {
1662                 return createPost(sone, System.currentTimeMillis(), text);
1663         }
1664
1665         /**
1666          * Creates a new post.
1667          *
1668          * @param sone
1669          *            The Sone that creates the post
1670          * @param time
1671          *            The time of the post
1672          * @param text
1673          *            The text of the post
1674          * @return The created post
1675          */
1676         public Post createPost(Sone sone, long time, String text) {
1677                 return createPost(sone, null, time, text);
1678         }
1679
1680         /**
1681          * Creates a new post.
1682          *
1683          * @param sone
1684          *            The Sone that creates the post
1685          * @param recipient
1686          *            The recipient Sone, or {@code null} if this post does not have
1687          *            a recipient
1688          * @param text
1689          *            The text of the post
1690          * @return The created post
1691          */
1692         public Post createPost(Sone sone, Sone recipient, String text) {
1693                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1694         }
1695
1696         /**
1697          * Creates a new post.
1698          *
1699          * @param sone
1700          *            The Sone that creates the post
1701          * @param recipient
1702          *            The recipient Sone, or {@code null} if this post does not have
1703          *            a recipient
1704          * @param time
1705          *            The time of the post
1706          * @param text
1707          *            The text of the post
1708          * @return The created post
1709          */
1710         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1711                 if (!isLocalSone(sone)) {
1712                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
1713                         return null;
1714                 }
1715                 final Post post = new Post(sone, time, text);
1716                 if (recipient != null) {
1717                         post.setRecipient(recipient);
1718                 }
1719                 synchronized (posts) {
1720                         posts.put(post.getId(), post);
1721                 }
1722                 synchronized (newPosts) {
1723                         newPosts.add(post.getId());
1724                         coreListenerManager.fireNewPostFound(post);
1725                 }
1726                 sone.addPost(post);
1727                 touchConfiguration();
1728                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1729
1730                         /**
1731                          * {@inheritDoc}
1732                          */
1733                         @Override
1734                         public void run() {
1735                                 markPostKnown(post);
1736                         }
1737                 }, "Mark " + post + " read.");
1738                 return post;
1739         }
1740
1741         /**
1742          * Deletes the given post.
1743          *
1744          * @param post
1745          *            The post to delete
1746          */
1747         public void deletePost(Post post) {
1748                 if (!isLocalSone(post.getSone())) {
1749                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
1750                         return;
1751                 }
1752                 post.getSone().removePost(post);
1753                 synchronized (posts) {
1754                         posts.remove(post.getId());
1755                 }
1756                 coreListenerManager.firePostRemoved(post);
1757                 synchronized (newPosts) {
1758                         markPostKnown(post);
1759                         knownPosts.remove(post.getId());
1760                 }
1761                 touchConfiguration();
1762         }
1763
1764         /**
1765          * Marks the given post as known, if it is currently a new post (according
1766          * to {@link #isNewPost(String)}).
1767          *
1768          * @param post
1769          *            The post to mark as known
1770          */
1771         public void markPostKnown(Post post) {
1772                 synchronized (newPosts) {
1773                         if (newPosts.remove(post.getId())) {
1774                                 knownPosts.add(post.getId());
1775                                 coreListenerManager.fireMarkPostKnown(post);
1776                                 touchConfiguration();
1777                         }
1778                 }
1779         }
1780
1781         /**
1782          * Bookmarks the given post.
1783          *
1784          * @param post
1785          *            The post to bookmark
1786          */
1787         public void bookmark(Post post) {
1788                 bookmarkPost(post.getId());
1789         }
1790
1791         /**
1792          * Bookmarks the post with the given ID.
1793          *
1794          * @param id
1795          *            The ID of the post to bookmark
1796          */
1797         public void bookmarkPost(String id) {
1798                 synchronized (bookmarkedPosts) {
1799                         bookmarkedPosts.add(id);
1800                 }
1801         }
1802
1803         /**
1804          * Removes the given post from the bookmarks.
1805          *
1806          * @param post
1807          *            The post to unbookmark
1808          */
1809         public void unbookmark(Post post) {
1810                 unbookmarkPost(post.getId());
1811         }
1812
1813         /**
1814          * Removes the post with the given ID from the bookmarks.
1815          *
1816          * @param id
1817          *            The ID of the post to unbookmark
1818          */
1819         public void unbookmarkPost(String id) {
1820                 synchronized (bookmarkedPosts) {
1821                         bookmarkedPosts.remove(id);
1822                 }
1823         }
1824
1825         /**
1826          * Creates a new reply.
1827          *
1828          * @param sone
1829          *            The Sone that creates the reply
1830          * @param post
1831          *            The post that this reply refers to
1832          * @param text
1833          *            The text of the reply
1834          * @return The created reply
1835          */
1836         public PostReply createReply(Sone sone, Post post, String text) {
1837                 return createReply(sone, post, System.currentTimeMillis(), text);
1838         }
1839
1840         /**
1841          * Creates a new reply.
1842          *
1843          * @param sone
1844          *            The Sone that creates the reply
1845          * @param post
1846          *            The post that this reply refers to
1847          * @param time
1848          *            The time of the reply
1849          * @param text
1850          *            The text of the reply
1851          * @return The created reply
1852          */
1853         public PostReply createReply(Sone sone, Post post, long time, String text) {
1854                 if (!isLocalSone(sone)) {
1855                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
1856                         return null;
1857                 }
1858                 final PostReply reply = new PostReply(sone, post, System.currentTimeMillis(), text);
1859                 synchronized (replies) {
1860                         replies.put(reply.getId(), reply);
1861                 }
1862                 synchronized (newReplies) {
1863                         newReplies.add(reply.getId());
1864                         coreListenerManager.fireNewReplyFound(reply);
1865                 }
1866                 sone.addReply(reply);
1867                 touchConfiguration();
1868                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1869
1870                         /**
1871                          * {@inheritDoc}
1872                          */
1873                         @Override
1874                         public void run() {
1875                                 markReplyKnown(reply);
1876                         }
1877                 }, "Mark " + reply + " read.");
1878                 return reply;
1879         }
1880
1881         /**
1882          * Deletes the given reply.
1883          *
1884          * @param reply
1885          *            The reply to delete
1886          */
1887         public void deleteReply(PostReply reply) {
1888                 Sone sone = reply.getSone();
1889                 if (!isLocalSone(sone)) {
1890                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
1891                         return;
1892                 }
1893                 synchronized (replies) {
1894                         replies.remove(reply.getId());
1895                 }
1896                 synchronized (newReplies) {
1897                         markReplyKnown(reply);
1898                         knownReplies.remove(reply.getId());
1899                 }
1900                 sone.removeReply(reply);
1901                 touchConfiguration();
1902         }
1903
1904         /**
1905          * Marks the given reply as known, if it is currently a new reply (according
1906          * to {@link #isNewReply(String)}).
1907          *
1908          * @param reply
1909          *            The reply to mark as known
1910          */
1911         public void markReplyKnown(PostReply reply) {
1912                 synchronized (newReplies) {
1913                         if (newReplies.remove(reply.getId())) {
1914                                 knownReplies.add(reply.getId());
1915                                 coreListenerManager.fireMarkReplyKnown(reply);
1916                                 touchConfiguration();
1917                         }
1918                 }
1919         }
1920
1921         /**
1922          * Creates a new top-level album for the given Sone.
1923          *
1924          * @param sone
1925          *            The Sone to create the album for
1926          * @return The new album
1927          */
1928         public Album createAlbum(Sone sone) {
1929                 return createAlbum(sone, null);
1930         }
1931
1932         /**
1933          * Creates a new album for the given Sone.
1934          *
1935          * @param sone
1936          *            The Sone to create the album for
1937          * @param parent
1938          *            The parent of the album (may be {@code null} to create a
1939          *            top-level album)
1940          * @return The new album
1941          */
1942         public Album createAlbum(Sone sone, Album parent) {
1943                 Album album = new Album();
1944                 synchronized (albums) {
1945                         albums.put(album.getId(), album);
1946                 }
1947                 album.setSone(sone);
1948                 if (parent != null) {
1949                         parent.addAlbum(album);
1950                 } else {
1951                         sone.addAlbum(album);
1952                 }
1953                 return album;
1954         }
1955
1956         /**
1957          * Deletes the given album. The owner of the album has to be a local Sone,
1958          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1959          *
1960          * @param album
1961          *            The album to remove
1962          */
1963         public void deleteAlbum(Album album) {
1964                 Validation.begin().isNotNull("Album", album).check().is("Local Sone", isLocalSone(album.getSone())).check();
1965                 if (!album.isEmpty()) {
1966                         return;
1967                 }
1968                 if (album.getParent() == null) {
1969                         album.getSone().removeAlbum(album);
1970                 } else {
1971                         album.getParent().removeAlbum(album);
1972                 }
1973                 synchronized (albums) {
1974                         albums.remove(album.getId());
1975                 }
1976                 saveSone(album.getSone());
1977         }
1978
1979         /**
1980          * Creates a new image.
1981          *
1982          * @param sone
1983          *            The Sone creating the image
1984          * @param album
1985          *            The album the image will be inserted into
1986          * @param temporaryImage
1987          *            The temporary image to create the image from
1988          * @return The newly created image
1989          */
1990         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1991                 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();
1992                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1993                 album.addImage(image);
1994                 synchronized (images) {
1995                         images.put(image.getId(), image);
1996                 }
1997                 imageInserter.insertImage(temporaryImage, image);
1998                 return image;
1999         }
2000
2001         /**
2002          * Deletes the given image. This method will also delete a matching
2003          * temporary image.
2004          *
2005          * @see #deleteTemporaryImage(TemporaryImage)
2006          * @param image
2007          *            The image to delete
2008          */
2009         public void deleteImage(Image image) {
2010                 Validation.begin().isNotNull("Image", image).check().is("Local Sone", isLocalSone(image.getSone())).check();
2011                 deleteTemporaryImage(image.getId());
2012                 image.getAlbum().removeImage(image);
2013                 synchronized (images) {
2014                         images.remove(image.getId());
2015                 }
2016                 saveSone(image.getSone());
2017         }
2018
2019         /**
2020          * Creates a new temporary image.
2021          *
2022          * @param mimeType
2023          *            The MIME type of the temporary image
2024          * @param imageData
2025          *            The encoded data of the image
2026          * @return The temporary image
2027          */
2028         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
2029                 TemporaryImage temporaryImage = new TemporaryImage();
2030                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
2031                 synchronized (temporaryImages) {
2032                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
2033                 }
2034                 return temporaryImage;
2035         }
2036
2037         /**
2038          * Deletes the given temporary image.
2039          *
2040          * @param temporaryImage
2041          *            The temporary image to delete
2042          */
2043         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
2044                 Validation.begin().isNotNull("Temporary Image", temporaryImage).check();
2045                 deleteTemporaryImage(temporaryImage.getId());
2046         }
2047
2048         /**
2049          * Deletes the temporary image with the given ID.
2050          *
2051          * @param imageId
2052          *            The ID of the temporary image to delete
2053          */
2054         public void deleteTemporaryImage(String imageId) {
2055                 Validation.begin().isNotNull("Temporary Image ID", imageId).check();
2056                 synchronized (temporaryImages) {
2057                         temporaryImages.remove(imageId);
2058                 }
2059                 Image image = getImage(imageId, false);
2060                 if (image != null) {
2061                         imageInserter.cancelImageInsert(image);
2062                 }
2063         }
2064
2065         /**
2066          * Notifies the core that the configuration, either of the core or of a
2067          * single local Sone, has changed, and that the configuration should be
2068          * saved.
2069          */
2070         public void touchConfiguration() {
2071                 lastConfigurationUpdate = System.currentTimeMillis();
2072         }
2073
2074         //
2075         // SERVICE METHODS
2076         //
2077
2078         /**
2079          * Starts the core.
2080          */
2081         @Override
2082         public void serviceStart() {
2083                 loadConfiguration();
2084                 updateChecker.addUpdateListener(this);
2085                 updateChecker.start();
2086         }
2087
2088         /**
2089          * {@inheritDoc}
2090          */
2091         @Override
2092         public void serviceRun() {
2093                 long lastSaved = System.currentTimeMillis();
2094                 while (!shouldStop()) {
2095                         sleep(1000);
2096                         long now = System.currentTimeMillis();
2097                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
2098                                 for (Sone localSone : getLocalSones()) {
2099                                         saveSone(localSone);
2100                                 }
2101                                 saveConfiguration();
2102                                 lastSaved = now;
2103                         }
2104                 }
2105         }
2106
2107         /**
2108          * Stops the core.
2109          */
2110         @Override
2111         public void serviceStop() {
2112                 synchronized (localSones) {
2113                         for (SoneInserter soneInserter : soneInserters.values()) {
2114                                 soneInserter.removeSoneInsertListener(this);
2115                                 soneInserter.stop();
2116                         }
2117                 }
2118                 updateChecker.stop();
2119                 updateChecker.removeUpdateListener(this);
2120                 soneDownloader.stop();
2121         }
2122
2123         //
2124         // PRIVATE METHODS
2125         //
2126
2127         /**
2128          * Saves the given Sone. This will persist all local settings for the given
2129          * Sone, such as the friends list and similar, private options.
2130          *
2131          * @param sone
2132          *            The Sone to save
2133          */
2134         private synchronized void saveSone(Sone sone) {
2135                 if (!isLocalSone(sone)) {
2136                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
2137                         return;
2138                 }
2139                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
2140                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
2141                         return;
2142                 }
2143
2144                 logger.log(Level.INFO, "Saving Sone: %s", sone);
2145                 try {
2146                         /* save Sone into configuration. */
2147                         String sonePrefix = "Sone/" + sone.getId();
2148                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
2149                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
2150
2151                         /* save profile. */
2152                         Profile profile = sone.getProfile();
2153                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
2154                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
2155                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
2156                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
2157                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
2158                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
2159
2160                         /* save profile fields. */
2161                         int fieldCounter = 0;
2162                         for (Field profileField : profile.getFields()) {
2163                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
2164                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
2165                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
2166                         }
2167                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
2168
2169                         /* save posts. */
2170                         int postCounter = 0;
2171                         for (Post post : sone.getPosts()) {
2172                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
2173                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
2174                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
2175                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
2176                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
2177                         }
2178                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
2179
2180                         /* save replies. */
2181                         int replyCounter = 0;
2182                         for (PostReply reply : sone.getReplies()) {
2183                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
2184                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
2185                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
2186                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
2187                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
2188                         }
2189                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
2190
2191                         /* save post likes. */
2192                         int postLikeCounter = 0;
2193                         for (String postId : sone.getLikedPostIds()) {
2194                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
2195                         }
2196                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
2197
2198                         /* save reply likes. */
2199                         int replyLikeCounter = 0;
2200                         for (String replyId : sone.getLikedReplyIds()) {
2201                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
2202                         }
2203                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
2204
2205                         /* save friends. */
2206                         int friendCounter = 0;
2207                         for (String friendId : sone.getFriends()) {
2208                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
2209                         }
2210                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
2211
2212                         /* save albums. first, collect in a flat structure, top-level first. */
2213                         List<Album> albums = sone.getAllAlbums();
2214
2215                         int albumCounter = 0;
2216                         for (Album album : albums) {
2217                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
2218                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
2219                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
2220                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
2221                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
2222                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
2223                         }
2224                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
2225
2226                         /* save images. */
2227                         int imageCounter = 0;
2228                         for (Album album : albums) {
2229                                 for (Image image : album.getImages()) {
2230                                         if (!image.isInserted()) {
2231                                                 continue;
2232                                         }
2233                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
2234                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
2235                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
2236                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
2237                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
2238                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
2239                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
2240                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
2241                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
2242                                 }
2243                         }
2244                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
2245
2246                         /* save options. */
2247                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
2248                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
2249                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
2250                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
2251                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
2252
2253                         configuration.save();
2254
2255                         ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
2256
2257                         logger.log(Level.INFO, "Sone %s saved.", sone);
2258                 } catch (ConfigurationException ce1) {
2259                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
2260                 } catch (WebOfTrustException wote1) {
2261                         logger.log(Level.WARNING, "Could not set WoT property for Sone: " + sone, wote1);
2262                 }
2263         }
2264
2265         /**
2266          * Saves the current options.
2267          */
2268         private void saveConfiguration() {
2269                 synchronized (configuration) {
2270                         if (storingConfiguration) {
2271                                 logger.log(Level.FINE, "Already storing configuration…");
2272                                 return;
2273                         }
2274                         storingConfiguration = true;
2275                 }
2276
2277                 /* store the options first. */
2278                 try {
2279                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
2280                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
2281                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
2282                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
2283                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
2284                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
2285                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
2286                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
2287                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
2288                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
2289                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
2290                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
2291                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
2292                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
2293
2294                         /* save known Sones. */
2295                         int soneCounter = 0;
2296                         synchronized (newSones) {
2297                                 for (String knownSoneId : knownSones) {
2298                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
2299                                 }
2300                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
2301                         }
2302
2303                         /* save Sone following times. */
2304                         soneCounter = 0;
2305                         synchronized (soneFollowingTimes) {
2306                                 for (Entry<Sone, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
2307                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey().getId());
2308                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
2309                                         ++soneCounter;
2310                                 }
2311                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
2312                         }
2313
2314                         /* save known posts. */
2315                         int postCounter = 0;
2316                         synchronized (newPosts) {
2317                                 for (String knownPostId : knownPosts) {
2318                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
2319                                 }
2320                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
2321                         }
2322
2323                         /* save known replies. */
2324                         int replyCounter = 0;
2325                         synchronized (newReplies) {
2326                                 for (String knownReplyId : knownReplies) {
2327                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
2328                                 }
2329                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
2330                         }
2331
2332                         /* save bookmarked posts. */
2333                         int bookmarkedPostCounter = 0;
2334                         synchronized (bookmarkedPosts) {
2335                                 for (String bookmarkedPostId : bookmarkedPosts) {
2336                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
2337                                 }
2338                         }
2339                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
2340
2341                         /* now save it. */
2342                         configuration.save();
2343
2344                 } catch (ConfigurationException ce1) {
2345                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
2346                 } finally {
2347                         synchronized (configuration) {
2348                                 storingConfiguration = false;
2349                         }
2350                 }
2351         }
2352
2353         /**
2354          * Loads the configuration.
2355          */
2356         @SuppressWarnings("unchecked")
2357         private void loadConfiguration() {
2358                 /* create options. */
2359                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangeValidator(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2360
2361                         @Override
2362                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2363                                 SoneInserter.setInsertionDelay(newValue);
2364                         }
2365
2366                 }));
2367                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
2368                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2369                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2370                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2371                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangeValidator(0, 100)));
2372                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangeValidator(-100, 100)));
2373                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2374                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2375
2376                         @Override
2377                         @SuppressWarnings("synthetic-access")
2378                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2379                                 fcpInterface.setActive(newValue);
2380                         }
2381                 }));
2382                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2383
2384                         @Override
2385                         @SuppressWarnings("synthetic-access")
2386                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2387                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2388                         }
2389
2390                 }));
2391                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
2392                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
2393                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
2394
2395                 /* read options from configuration. */
2396                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
2397                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
2398                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
2399                 options.getBooleanOption("ClearOnNextRestart").set(null);
2400                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
2401                 if (clearConfiguration) {
2402                         /* stop loading the configuration. */
2403                         return;
2404                 }
2405
2406                 loadConfigurationValue("InsertionDelay");
2407                 loadConfigurationValue("PostsPerPage");
2408                 loadConfigurationValue("CharactersPerPost");
2409                 loadConfigurationValue("PostCutOffLength");
2410                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2411                 loadConfigurationValue("PositiveTrust");
2412                 loadConfigurationValue("NegativeTrust");
2413                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2414                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2415                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2416                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
2417
2418                 /* load known Sones. */
2419                 int soneCounter = 0;
2420                 while (true) {
2421                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2422                         if (knownSoneId == null) {
2423                                 break;
2424                         }
2425                         synchronized (newSones) {
2426                                 knownSones.add(knownSoneId);
2427                         }
2428                 }
2429
2430                 /* load Sone following times. */
2431                 soneCounter = 0;
2432                 while (true) {
2433                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2434                         if (soneId == null) {
2435                                 break;
2436                         }
2437                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2438                         synchronized (soneFollowingTimes) {
2439                                 soneFollowingTimes.put(getSone(soneId), time);
2440                         }
2441                         ++soneCounter;
2442                 }
2443
2444                 /* load known posts. */
2445                 int postCounter = 0;
2446                 while (true) {
2447                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
2448                         if (knownPostId == null) {
2449                                 break;
2450                         }
2451                         synchronized (newPosts) {
2452                                 knownPosts.add(knownPostId);
2453                         }
2454                 }
2455
2456                 /* load known replies. */
2457                 int replyCounter = 0;
2458                 while (true) {
2459                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
2460                         if (knownReplyId == null) {
2461                                 break;
2462                         }
2463                         synchronized (newReplies) {
2464                                 knownReplies.add(knownReplyId);
2465                         }
2466                 }
2467
2468                 /* load bookmarked posts. */
2469                 int bookmarkedPostCounter = 0;
2470                 while (true) {
2471                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2472                         if (bookmarkedPostId == null) {
2473                                 break;
2474                         }
2475                         synchronized (bookmarkedPosts) {
2476                                 bookmarkedPosts.add(bookmarkedPostId);
2477                         }
2478                 }
2479
2480         }
2481
2482         /**
2483          * Loads an {@link Integer} configuration value for the option with the
2484          * given name, logging validation failures.
2485          *
2486          * @param optionName
2487          *            The name of the option to load
2488          */
2489         private void loadConfigurationValue(String optionName) {
2490                 try {
2491                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2492                 } catch (IllegalArgumentException iae1) {
2493                         logger.log(Level.WARNING, "Invalid value for " + optionName + " in configuration, using default.");
2494                 }
2495         }
2496
2497         /**
2498          * Generate a Sone URI from the given URI and latest edition.
2499          *
2500          * @param uriString
2501          *            The URI to derive the Sone URI from
2502          * @return The derived URI
2503          */
2504         private FreenetURI getSoneUri(String uriString) {
2505                 try {
2506                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
2507                         return uri;
2508                 } catch (MalformedURLException mue1) {
2509                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
2510                         return null;
2511                 }
2512         }
2513
2514         //
2515         // INTERFACE IdentityListener
2516         //
2517
2518         /**
2519          * {@inheritDoc}
2520          */
2521         @Override
2522         public void ownIdentityAdded(OwnIdentity ownIdentity) {
2523                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
2524                 if (ownIdentity.hasContext("Sone")) {
2525                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2526                         addLocalSone(ownIdentity);
2527                 }
2528         }
2529
2530         /**
2531          * {@inheritDoc}
2532          */
2533         @Override
2534         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
2535                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
2536                 trustedIdentities.remove(ownIdentity);
2537         }
2538
2539         /**
2540          * {@inheritDoc}
2541          */
2542         @Override
2543         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
2544                 logger.log(Level.FINEST, "Adding Identity: " + identity);
2545                 trustedIdentities.get(ownIdentity).add(identity);
2546                 addRemoteSone(identity);
2547         }
2548
2549         /**
2550          * {@inheritDoc}
2551          */
2552         @Override
2553         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
2554                 new Thread(new Runnable() {
2555
2556                         @Override
2557                         @SuppressWarnings("synthetic-access")
2558                         public void run() {
2559                                 Sone sone = getRemoteSone(identity.getId());
2560                                 sone.setIdentity(identity);
2561                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2562                                 soneDownloader.addSone(sone);
2563                                 soneDownloader.fetchSone(sone);
2564                         }
2565                 }).start();
2566         }
2567
2568         /**
2569          * {@inheritDoc}
2570          */
2571         @Override
2572         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
2573                 trustedIdentities.get(ownIdentity).remove(identity);
2574                 boolean foundIdentity = false;
2575                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2576                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2577                                 continue;
2578                         }
2579                         if (trustedIdentity.getValue().contains(identity)) {
2580                                 foundIdentity = true;
2581                         }
2582                 }
2583                 if (foundIdentity) {
2584                         /* some local identity still trusts this identity, don’t remove. */
2585                         return;
2586                 }
2587                 Sone sone = getSone(identity.getId(), false);
2588                 if (sone == null) {
2589                         /* TODO - we don’t have the Sone anymore. should this happen? */
2590                         return;
2591                 }
2592                 synchronized (posts) {
2593                         synchronized (newPosts) {
2594                                 for (Post post : sone.getPosts()) {
2595                                         posts.remove(post.getId());
2596                                         newPosts.remove(post.getId());
2597                                         coreListenerManager.firePostRemoved(post);
2598                                 }
2599                         }
2600                 }
2601                 synchronized (replies) {
2602                         synchronized (newReplies) {
2603                                 for (PostReply reply : sone.getReplies()) {
2604                                         replies.remove(reply.getId());
2605                                         newReplies.remove(reply.getId());
2606                                         coreListenerManager.fireReplyRemoved(reply);
2607                                 }
2608                         }
2609                 }
2610                 synchronized (remoteSones) {
2611                         remoteSones.remove(identity.getId());
2612                 }
2613                 synchronized (newSones) {
2614                         newSones.remove(identity.getId());
2615                         coreListenerManager.fireSoneRemoved(sone);
2616                 }
2617         }
2618
2619         //
2620         // INTERFACE UpdateListener
2621         //
2622
2623         /**
2624          * {@inheritDoc}
2625          */
2626         @Override
2627         public void updateFound(Version version, long releaseTime, long latestEdition) {
2628                 coreListenerManager.fireUpdateFound(version, releaseTime, latestEdition);
2629         }
2630
2631         //
2632         // INTERFACE ImageInsertListener
2633         //
2634
2635         /**
2636          * {@inheritDoc}
2637          */
2638         @Override
2639         public void insertStarted(Sone sone) {
2640                 coreListenerManager.fireSoneInserting(sone);
2641         }
2642
2643         /**
2644          * {@inheritDoc}
2645          */
2646         @Override
2647         public void insertFinished(Sone sone, long insertDuration) {
2648                 coreListenerManager.fireSoneInserted(sone, insertDuration);
2649         }
2650
2651         /**
2652          * {@inheritDoc}
2653          */
2654         @Override
2655         public void insertAborted(Sone sone, Throwable cause) {
2656                 coreListenerManager.fireSoneInsertAborted(sone, cause);
2657         }
2658
2659         //
2660         // SONEINSERTLISTENER METHODS
2661         //
2662
2663         /**
2664          * {@inheritDoc}
2665          */
2666         @Override
2667         public void imageInsertStarted(Image image) {
2668                 logger.log(Level.WARNING, "Image insert started for " + image);
2669                 coreListenerManager.fireImageInsertStarted(image);
2670         }
2671
2672         /**
2673          * {@inheritDoc}
2674          */
2675         @Override
2676         public void imageInsertAborted(Image image) {
2677                 logger.log(Level.WARNING, "Image insert aborted for " + image);
2678                 coreListenerManager.fireImageInsertAborted(image);
2679         }
2680
2681         /**
2682          * {@inheritDoc}
2683          */
2684         @Override
2685         public void imageInsertFinished(Image image, FreenetURI key) {
2686                 logger.log(Level.WARNING, "Image insert finished for " + image + ": " + key);
2687                 image.setKey(key.toString());
2688                 deleteTemporaryImage(image.getId());
2689                 saveSone(image.getSone());
2690                 coreListenerManager.fireImageInsertFinished(image);
2691         }
2692
2693         /**
2694          * {@inheritDoc}
2695          */
2696         @Override
2697         public void imageInsertFailed(Image image, Throwable cause) {
2698                 logger.log(Level.WARNING, "Image insert failed for " + image, cause);
2699                 coreListenerManager.fireImageInsertFailed(image, cause);
2700         }
2701
2702         /**
2703          * Convenience interface for external classes that want to access the core’s
2704          * configuration.
2705          *
2706          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
2707          */
2708         public static class Preferences {
2709
2710                 /** The wrapped options. */
2711                 private final Options options;
2712
2713                 /**
2714                  * Creates a new preferences object wrapped around the given options.
2715                  *
2716                  * @param options
2717                  *            The options to wrap
2718                  */
2719                 public Preferences(Options options) {
2720                         this.options = options;
2721                 }
2722
2723                 /**
2724                  * Returns the insertion delay.
2725                  *
2726                  * @return The insertion delay
2727                  */
2728                 public int getInsertionDelay() {
2729                         return options.getIntegerOption("InsertionDelay").get();
2730                 }
2731
2732                 /**
2733                  * Validates the given insertion delay.
2734                  *
2735                  * @param insertionDelay
2736                  *            The insertion delay to validate
2737                  * @return {@code true} if the given insertion delay was valid, {@code
2738                  *         false} otherwise
2739                  */
2740                 public boolean validateInsertionDelay(Integer insertionDelay) {
2741                         return options.getIntegerOption("InsertionDelay").validate(insertionDelay);
2742                 }
2743
2744                 /**
2745                  * Sets the insertion delay
2746                  *
2747                  * @param insertionDelay
2748                  *            The new insertion delay, or {@code null} to restore it to
2749                  *            the default value
2750                  * @return This preferences
2751                  */
2752                 public Preferences setInsertionDelay(Integer insertionDelay) {
2753                         options.getIntegerOption("InsertionDelay").set(insertionDelay);
2754                         return this;
2755                 }
2756
2757                 /**
2758                  * Returns the number of posts to show per page.
2759                  *
2760                  * @return The number of posts to show per page
2761                  */
2762                 public int getPostsPerPage() {
2763                         return options.getIntegerOption("PostsPerPage").get();
2764                 }
2765
2766                 /**
2767                  * Validates the number of posts per page.
2768                  *
2769                  * @param postsPerPage
2770                  *            The number of posts per page
2771                  * @return {@code true} if the number of posts per page was valid,
2772                  *         {@code false} otherwise
2773                  */
2774                 public boolean validatePostsPerPage(Integer postsPerPage) {
2775                         return options.getIntegerOption("PostsPerPage").validate(postsPerPage);
2776                 }
2777
2778                 /**
2779                  * Sets the number of posts to show per page.
2780                  *
2781                  * @param postsPerPage
2782                  *            The number of posts to show per page
2783                  * @return This preferences object
2784                  */
2785                 public Preferences setPostsPerPage(Integer postsPerPage) {
2786                         options.getIntegerOption("PostsPerPage").set(postsPerPage);
2787                         return this;
2788                 }
2789
2790                 /**
2791                  * Returns the number of characters per post, or <code>-1</code> if the
2792                  * posts should not be cut off.
2793                  *
2794                  * @return The numbers of characters per post
2795                  */
2796                 public int getCharactersPerPost() {
2797                         return options.getIntegerOption("CharactersPerPost").get();
2798                 }
2799
2800                 /**
2801                  * Validates the number of characters per post.
2802                  *
2803                  * @param charactersPerPost
2804                  *            The number of characters per post
2805                  * @return {@code true} if the number of characters per post was valid,
2806                  *         {@code false} otherwise
2807                  */
2808                 public boolean validateCharactersPerPost(Integer charactersPerPost) {
2809                         return options.getIntegerOption("CharactersPerPost").validate(charactersPerPost);
2810                 }
2811
2812                 /**
2813                  * Sets the number of characters per post.
2814                  *
2815                  * @param charactersPerPost
2816                  *            The number of characters per post, or <code>-1</code> to
2817                  *            not cut off the posts
2818                  * @return This preferences objects
2819                  */
2820                 public Preferences setCharactersPerPost(Integer charactersPerPost) {
2821                         options.getIntegerOption("CharactersPerPost").set(charactersPerPost);
2822                         return this;
2823                 }
2824
2825                 /**
2826                  * Returns the number of characters the shortened post should have.
2827                  *
2828                  * @return The number of characters of the snippet
2829                  */
2830                 public int getPostCutOffLength() {
2831                         return options.getIntegerOption("PostCutOffLength").get();
2832                 }
2833
2834                 /**
2835                  * Validates the number of characters after which to cut off the post.
2836                  *
2837                  * @param postCutOffLength
2838                  *            The number of characters of the snippet
2839                  * @return {@code true} if the number of characters of the snippet is
2840                  *         valid, {@code false} otherwise
2841                  */
2842                 public boolean validatePostCutOffLength(Integer postCutOffLength) {
2843                         return options.getIntegerOption("PostCutOffLength").validate(postCutOffLength);
2844                 }
2845
2846                 /**
2847                  * Sets the number of characters the shortened post should have.
2848                  *
2849                  * @param postCutOffLength
2850                  *            The number of characters of the snippet
2851                  * @return This preferences
2852                  */
2853                 public Preferences setPostCutOffLength(Integer postCutOffLength) {
2854                         options.getIntegerOption("PostCutOffLength").set(postCutOffLength);
2855                         return this;
2856                 }
2857
2858                 /**
2859                  * Returns whether Sone requires full access to be even visible.
2860                  *
2861                  * @return {@code true} if Sone requires full access, {@code false}
2862                  *         otherwise
2863                  */
2864                 public boolean isRequireFullAccess() {
2865                         return options.getBooleanOption("RequireFullAccess").get();
2866                 }
2867
2868                 /**
2869                  * Sets whether Sone requires full access to be even visible.
2870                  *
2871                  * @param requireFullAccess
2872                  *            {@code true} if Sone requires full access, {@code false}
2873                  *            otherwise
2874                  */
2875                 public void setRequireFullAccess(Boolean requireFullAccess) {
2876                         options.getBooleanOption("RequireFullAccess").set(requireFullAccess);
2877                 }
2878
2879                 /**
2880                  * Returns the positive trust.
2881                  *
2882                  * @return The positive trust
2883                  */
2884                 public int getPositiveTrust() {
2885                         return options.getIntegerOption("PositiveTrust").get();
2886                 }
2887
2888                 /**
2889                  * Validates the positive trust.
2890                  *
2891                  * @param positiveTrust
2892                  *            The positive trust to validate
2893                  * @return {@code true} if the positive trust was valid, {@code false}
2894                  *         otherwise
2895                  */
2896                 public boolean validatePositiveTrust(Integer positiveTrust) {
2897                         return options.getIntegerOption("PositiveTrust").validate(positiveTrust);
2898                 }
2899
2900                 /**
2901                  * Sets the positive trust.
2902                  *
2903                  * @param positiveTrust
2904                  *            The new positive trust, or {@code null} to restore it to
2905                  *            the default vlaue
2906                  * @return This preferences
2907                  */
2908                 public Preferences setPositiveTrust(Integer positiveTrust) {
2909                         options.getIntegerOption("PositiveTrust").set(positiveTrust);
2910                         return this;
2911                 }
2912
2913                 /**
2914                  * Returns the negative trust.
2915                  *
2916                  * @return The negative trust
2917                  */
2918                 public int getNegativeTrust() {
2919                         return options.getIntegerOption("NegativeTrust").get();
2920                 }
2921
2922                 /**
2923                  * Validates the negative trust.
2924                  *
2925                  * @param negativeTrust
2926                  *            The negative trust to validate
2927                  * @return {@code true} if the negative trust was valid, {@code false}
2928                  *         otherwise
2929                  */
2930                 public boolean validateNegativeTrust(Integer negativeTrust) {
2931                         return options.getIntegerOption("NegativeTrust").validate(negativeTrust);
2932                 }
2933
2934                 /**
2935                  * Sets the negative trust.
2936                  *
2937                  * @param negativeTrust
2938                  *            The negative trust, or {@code null} to restore it to the
2939                  *            default value
2940                  * @return The preferences
2941                  */
2942                 public Preferences setNegativeTrust(Integer negativeTrust) {
2943                         options.getIntegerOption("NegativeTrust").set(negativeTrust);
2944                         return this;
2945                 }
2946
2947                 /**
2948                  * Returns the trust comment. This is the comment that is set in the web
2949                  * of trust when a trust value is assigned to an identity.
2950                  *
2951                  * @return The trust comment
2952                  */
2953                 public String getTrustComment() {
2954                         return options.getStringOption("TrustComment").get();
2955                 }
2956
2957                 /**
2958                  * Sets the trust comment.
2959                  *
2960                  * @param trustComment
2961                  *            The trust comment, or {@code null} to restore it to the
2962                  *            default value
2963                  * @return This preferences
2964                  */
2965                 public Preferences setTrustComment(String trustComment) {
2966                         options.getStringOption("TrustComment").set(trustComment);
2967                         return this;
2968                 }
2969
2970                 /**
2971                  * Returns whether the {@link FcpInterface FCP interface} is currently
2972                  * active.
2973                  *
2974                  * @see FcpInterface#setActive(boolean)
2975                  * @return {@code true} if the FCP interface is currently active,
2976                  *         {@code false} otherwise
2977                  */
2978                 public boolean isFcpInterfaceActive() {
2979                         return options.getBooleanOption("ActivateFcpInterface").get();
2980                 }
2981
2982                 /**
2983                  * Sets whether the {@link FcpInterface FCP interface} is currently
2984                  * active.
2985                  *
2986                  * @see FcpInterface#setActive(boolean)
2987                  * @param fcpInterfaceActive
2988                  *            {@code true} to activate the FCP interface, {@code false}
2989                  *            to deactivate the FCP interface
2990                  * @return This preferences object
2991                  */
2992                 public Preferences setFcpInterfaceActive(boolean fcpInterfaceActive) {
2993                         options.getBooleanOption("ActivateFcpInterface").set(fcpInterfaceActive);
2994                         return this;
2995                 }
2996
2997                 /**
2998                  * Returns the action level for which full access to the FCP interface
2999                  * is required.
3000                  *
3001                  * @return The action level for which full access to the FCP interface
3002                  *         is required
3003                  */
3004                 public FullAccessRequired getFcpFullAccessRequired() {
3005                         return FullAccessRequired.values()[options.getIntegerOption("FcpFullAccessRequired").get()];
3006                 }
3007
3008                 /**
3009                  * Sets the action level for which full access to the FCP interface is
3010                  * required
3011                  *
3012                  * @param fcpFullAccessRequired
3013                  *            The action level
3014                  * @return This preferences
3015                  */
3016                 public Preferences setFcpFullAccessRequired(FullAccessRequired fcpFullAccessRequired) {
3017                         options.getIntegerOption("FcpFullAccessRequired").set((fcpFullAccessRequired != null) ? fcpFullAccessRequired.ordinal() : null);
3018                         return this;
3019                 }
3020
3021                 /**
3022                  * Returns whether Sone should clear its settings on the next restart.
3023                  * In order to be effective, {@link #isReallyClearOnNextRestart()} needs
3024                  * to return {@code true} as well!
3025                  *
3026                  * @return {@code true} if Sone should clear its settings on the next
3027                  *         restart, {@code false} otherwise
3028                  */
3029                 public boolean isClearOnNextRestart() {
3030                         return options.getBooleanOption("ClearOnNextRestart").get();
3031                 }
3032
3033                 /**
3034                  * Sets whether Sone will clear its settings on the next restart.
3035                  *
3036                  * @param clearOnNextRestart
3037                  *            {@code true} if Sone should clear its settings on the next
3038                  *            restart, {@code false} otherwise
3039                  * @return This preferences
3040                  */
3041                 public Preferences setClearOnNextRestart(Boolean clearOnNextRestart) {
3042                         options.getBooleanOption("ClearOnNextRestart").set(clearOnNextRestart);
3043                         return this;
3044                 }
3045
3046                 /**
3047                  * Returns whether Sone should really clear its settings on next
3048                  * restart. This is a confirmation option that needs to be set in
3049                  * addition to {@link #isClearOnNextRestart()} in order to clear Sone’s
3050                  * settings on the next restart.
3051                  *
3052                  * @return {@code true} if Sone should really clear its settings on the
3053                  *         next restart, {@code false} otherwise
3054                  */
3055                 public boolean isReallyClearOnNextRestart() {
3056                         return options.getBooleanOption("ReallyClearOnNextRestart").get();
3057                 }
3058
3059                 /**
3060                  * Sets whether Sone should really clear its settings on the next
3061                  * restart.
3062                  *
3063                  * @param reallyClearOnNextRestart
3064                  *            {@code true} if Sone should really clear its settings on
3065                  *            the next restart, {@code false} otherwise
3066                  * @return This preferences
3067                  */
3068                 public Preferences setReallyClearOnNextRestart(Boolean reallyClearOnNextRestart) {
3069                         options.getBooleanOption("ReallyClearOnNextRestart").set(reallyClearOnNextRestart);
3070                         return this;
3071                 }
3072
3073         }
3074
3075 }