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                 followSone(sone, getSone("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                                                         followSone(localSone, sone);
1069                                                 }
1070                                         }
1071                                 }
1072                         }
1073                         remoteSones.put(identity.getId(), sone);
1074                         soneDownloader.addSone(sone);
1075                         setSoneStatus(sone, SoneStatus.unknown);
1076                         soneDownloaders.execute(new Runnable() {
1077
1078                                 @Override
1079                                 @SuppressWarnings("synthetic-access")
1080                                 public void run() {
1081                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
1082                                 }
1083
1084                         });
1085                         return sone;
1086                 }
1087         }
1088
1089         /**
1090          * Lets the given local Sone follow the Sone with the given ID.
1091          *
1092          * @param sone
1093          *            The local Sone that should follow another Sone
1094          * @param soneId
1095          *            The ID of the Sone to follow
1096          */
1097         public void followSone(Sone sone, String soneId) {
1098                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
1099                 followSone(sone, getSone(soneId));
1100         }
1101
1102         /**
1103          * Lets the given local Sone follow the other given Sone. If the given Sone
1104          * was not followed by any local Sone before, this will mark all elements of
1105          * the followed Sone as read that have been created before the current
1106          * moment.
1107          *
1108          * @param sone
1109          *            The local Sone that should follow the other Sone
1110          * @param followedSone
1111          *            The Sone that should be followed
1112          */
1113         public void followSone(Sone sone, Sone followedSone) {
1114                 Validation.begin().isNotNull("Sone", sone).isNotNull("Followed Sone", followedSone).check();
1115                 sone.addFriend(followedSone.getId());
1116                 synchronized (soneFollowingTimes) {
1117                         if (!soneFollowingTimes.containsKey(followedSone)) {
1118                                 long now = System.currentTimeMillis();
1119                                 soneFollowingTimes.put(followedSone, now);
1120                                 for (Post post : followedSone.getPosts()) {
1121                                         if (post.getTime() < now) {
1122                                                 markPostKnown(post);
1123                                         }
1124                                 }
1125                                 for (PostReply reply : followedSone.getReplies()) {
1126                                         if (reply.getTime() < now) {
1127                                                 markReplyKnown(reply);
1128                                         }
1129                                 }
1130                         }
1131                 }
1132                 touchConfiguration();
1133         }
1134
1135         /**
1136          * Lets the given local Sone unfollow the Sone with the given ID.
1137          *
1138          * @param sone
1139          *            The local Sone that should unfollow another Sone
1140          * @param soneId
1141          *            The ID of the Sone being unfollowed
1142          */
1143         public void unfollowSone(Sone sone, String soneId) {
1144                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
1145                 unfollowSone(sone, getSone(soneId, false));
1146         }
1147
1148         /**
1149          * Lets the given local Sone unfollow the other given Sone. If the given
1150          * local Sone is the last local Sone that followed the given Sone, its
1151          * following time will be removed.
1152          *
1153          * @param sone
1154          *            The local Sone that should unfollow another Sone
1155          * @param unfollowedSone
1156          *            The Sone being unfollowed
1157          */
1158         public void unfollowSone(Sone sone, Sone unfollowedSone) {
1159                 Validation.begin().isNotNull("Sone", sone).isNotNull("Unfollowed Sone", unfollowedSone).check();
1160                 sone.removeFriend(unfollowedSone.getId());
1161                 boolean unfollowedSoneStillFollowed = false;
1162                 for (Sone localSone : getLocalSones()) {
1163                         unfollowedSoneStillFollowed |= localSone.hasFriend(unfollowedSone.getId());
1164                 }
1165                 if (!unfollowedSoneStillFollowed) {
1166                         synchronized (soneFollowingTimes) {
1167                                 soneFollowingTimes.remove(unfollowedSone);
1168                         }
1169                 }
1170                 touchConfiguration();
1171         }
1172
1173         /**
1174          * Retrieves the trust relationship from the origin to the target. If the
1175          * trust relationship can not be retrieved, {@code null} is returned.
1176          *
1177          * @see Identity#getTrust(OwnIdentity)
1178          * @param origin
1179          *            The origin of the trust tree
1180          * @param target
1181          *            The target of the trust
1182          * @return The trust relationship
1183          */
1184         public Trust getTrust(Sone origin, Sone target) {
1185                 if (!isLocalSone(origin)) {
1186                         logger.log(Level.WARNING, "Tried to get trust from remote Sone: %s", origin);
1187                         return null;
1188                 }
1189                 return target.getIdentity().getTrust((OwnIdentity) origin.getIdentity());
1190         }
1191
1192         /**
1193          * Sets the trust value of the given origin Sone for the target Sone.
1194          *
1195          * @param origin
1196          *            The origin Sone
1197          * @param target
1198          *            The target Sone
1199          * @param trustValue
1200          *            The trust value (from {@code -100} to {@code 100})
1201          */
1202         public void setTrust(Sone origin, Sone target, int trustValue) {
1203                 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();
1204                 try {
1205                         ((OwnIdentity) origin.getIdentity()).setTrust(target.getIdentity(), trustValue, preferences.getTrustComment());
1206                 } catch (WebOfTrustException wote1) {
1207                         logger.log(Level.WARNING, "Could not set trust for Sone: " + target, wote1);
1208                 }
1209         }
1210
1211         /**
1212          * Removes any trust assignment for the given target Sone.
1213          *
1214          * @param origin
1215          *            The trust origin
1216          * @param target
1217          *            The trust target
1218          */
1219         public void removeTrust(Sone origin, Sone target) {
1220                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
1221                 try {
1222                         ((OwnIdentity) origin.getIdentity()).removeTrust(target.getIdentity());
1223                 } catch (WebOfTrustException wote1) {
1224                         logger.log(Level.WARNING, "Could not remove trust for Sone: " + target, wote1);
1225                 }
1226         }
1227
1228         /**
1229          * Assigns the configured positive trust value for the given target.
1230          *
1231          * @param origin
1232          *            The trust origin
1233          * @param target
1234          *            The trust target
1235          */
1236         public void trustSone(Sone origin, Sone target) {
1237                 setTrust(origin, target, preferences.getPositiveTrust());
1238         }
1239
1240         /**
1241          * Assigns the configured negative trust value for the given target.
1242          *
1243          * @param origin
1244          *            The trust origin
1245          * @param target
1246          *            The trust target
1247          */
1248         public void distrustSone(Sone origin, Sone target) {
1249                 setTrust(origin, target, preferences.getNegativeTrust());
1250         }
1251
1252         /**
1253          * Removes the trust assignment for the given target.
1254          *
1255          * @param origin
1256          *            The trust origin
1257          * @param target
1258          *            The trust target
1259          */
1260         public void untrustSone(Sone origin, Sone target) {
1261                 removeTrust(origin, target);
1262         }
1263
1264         /**
1265          * Updates the stored Sone with the given Sone.
1266          *
1267          * @param sone
1268          *            The updated Sone
1269          */
1270         public void updateSone(Sone sone) {
1271                 updateSone(sone, false);
1272         }
1273
1274         /**
1275          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
1276          * {@code true}, an older Sone than the current Sone can be given to restore
1277          * an old state.
1278          *
1279          * @param sone
1280          *            The Sone to update
1281          * @param soneRescueMode
1282          *            {@code true} if the stored Sone should be updated regardless
1283          *            of the age of the given Sone
1284          */
1285         public void updateSone(Sone sone, boolean soneRescueMode) {
1286                 if (hasSone(sone.getId())) {
1287                         Sone storedSone = getSone(sone.getId());
1288                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1289                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
1290                                 return;
1291                         }
1292                         synchronized (posts) {
1293                                 if (!soneRescueMode) {
1294                                         for (Post post : storedSone.getPosts()) {
1295                                                 posts.remove(post.getId());
1296                                                 if (!sone.getPosts().contains(post)) {
1297                                                         coreListenerManager.firePostRemoved(post);
1298                                                 }
1299                                         }
1300                                 }
1301                                 List<Post> storedPosts = storedSone.getPosts();
1302                                 synchronized (newPosts) {
1303                                         for (Post post : sone.getPosts()) {
1304                                                 post.setSone(storedSone);
1305                                                 if (!storedPosts.contains(post) && !knownPosts.contains(post.getId())) {
1306                                                         newPosts.add(post.getId());
1307                                                         coreListenerManager.fireNewPostFound(post);
1308                                                 }
1309                                                 posts.put(post.getId(), post);
1310                                         }
1311                                 }
1312                         }
1313                         synchronized (replies) {
1314                                 if (!soneRescueMode) {
1315                                         for (PostReply reply : storedSone.getReplies()) {
1316                                                 replies.remove(reply.getId());
1317                                                 if (!sone.getReplies().contains(reply)) {
1318                                                         coreListenerManager.fireReplyRemoved(reply);
1319                                                 }
1320                                         }
1321                                 }
1322                                 Set<PostReply> storedReplies = storedSone.getReplies();
1323                                 synchronized (newReplies) {
1324                                         for (PostReply reply : sone.getReplies()) {
1325                                                 reply.setSone(storedSone);
1326                                                 if (!storedReplies.contains(reply) && !knownReplies.contains(reply.getId())) {
1327                                                         newReplies.add(reply.getId());
1328                                                         coreListenerManager.fireNewReplyFound(reply);
1329                                                 }
1330                                                 replies.put(reply.getId(), reply);
1331                                         }
1332                                 }
1333                         }
1334                         synchronized (albums) {
1335                                 synchronized (images) {
1336                                         for (Album album : storedSone.getAlbums()) {
1337                                                 albums.remove(album.getId());
1338                                                 for (Image image : album.getImages()) {
1339                                                         images.remove(image.getId());
1340                                                 }
1341                                         }
1342                                         for (Album album : sone.getAlbums()) {
1343                                                 albums.put(album.getId(), album);
1344                                                 for (Image image : album.getImages()) {
1345                                                         images.put(image.getId(), image);
1346                                                 }
1347                                         }
1348                                 }
1349                         }
1350                         synchronized (storedSone) {
1351                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1352                                         storedSone.setTime(sone.getTime());
1353                                 }
1354                                 storedSone.setClient(sone.getClient());
1355                                 storedSone.setProfile(sone.getProfile());
1356                                 if (soneRescueMode) {
1357                                         for (Post post : sone.getPosts()) {
1358                                                 storedSone.addPost(post);
1359                                         }
1360                                         for (PostReply reply : sone.getReplies()) {
1361                                                 storedSone.addReply(reply);
1362                                         }
1363                                         for (String likedPostId : sone.getLikedPostIds()) {
1364                                                 storedSone.addLikedPostId(likedPostId);
1365                                         }
1366                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1367                                                 storedSone.addLikedReplyId(likedReplyId);
1368                                         }
1369                                         for (Album album : sone.getAlbums()) {
1370                                                 storedSone.addAlbum(album);
1371                                         }
1372                                 } else {
1373                                         storedSone.setPosts(sone.getPosts());
1374                                         storedSone.setReplies(sone.getReplies());
1375                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1376                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1377                                         storedSone.setAlbums(sone.getAlbums());
1378                                 }
1379                                 storedSone.setLatestEdition(sone.getLatestEdition());
1380                         }
1381                 }
1382         }
1383
1384         /**
1385          * Deletes the given Sone. This will remove the Sone from the
1386          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
1387          * and remove the context from its identity.
1388          *
1389          * @param sone
1390          *            The Sone to delete
1391          */
1392         public void deleteSone(Sone sone) {
1393                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1394                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
1395                         return;
1396                 }
1397                 synchronized (localSones) {
1398                         if (!localSones.containsKey(sone.getId())) {
1399                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
1400                                 return;
1401                         }
1402                         localSones.remove(sone.getId());
1403                         SoneInserter soneInserter = soneInserters.remove(sone);
1404                         soneInserter.removeSoneInsertListener(this);
1405                         soneInserter.stop();
1406                 }
1407                 try {
1408                         ((OwnIdentity) sone.getIdentity()).removeContext("Sone");
1409                         ((OwnIdentity) sone.getIdentity()).removeProperty("Sone.LatestEdition");
1410                 } catch (WebOfTrustException wote1) {
1411                         logger.log(Level.WARNING, "Could not remove context and properties from Sone: " + sone, wote1);
1412                 }
1413                 try {
1414                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1415                 } catch (ConfigurationException ce1) {
1416                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1417                 }
1418         }
1419
1420         /**
1421          * Marks the given Sone as known. If the Sone was {@link #isNewPost(String)
1422          * new} before, a {@link CoreListener#markSoneKnown(Sone)} event is fired.
1423          *
1424          * @param sone
1425          *            The Sone to mark as known
1426          */
1427         public void markSoneKnown(Sone sone) {
1428                 synchronized (newSones) {
1429                         if (newSones.remove(sone.getId())) {
1430                                 knownSones.add(sone.getId());
1431                                 coreListenerManager.fireMarkSoneKnown(sone);
1432                                 touchConfiguration();
1433                         }
1434                 }
1435         }
1436
1437         /**
1438          * Loads and updates the given Sone from the configuration. If any error is
1439          * encountered, loading is aborted and the given Sone is not changed.
1440          *
1441          * @param sone
1442          *            The Sone to load and update
1443          */
1444         public void loadSone(Sone sone) {
1445                 if (!isLocalSone(sone)) {
1446                         logger.log(Level.FINE, "Tried to load non-local Sone: %s", sone);
1447                         return;
1448                 }
1449
1450                 /* initialize options. */
1451                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1452                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1453                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1454                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1455                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1456
1457                 /* load Sone. */
1458                 String sonePrefix = "Sone/" + sone.getId();
1459                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1460                 if (soneTime == null) {
1461                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1462                         return;
1463                 }
1464                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1465
1466                 /* load profile. */
1467                 Profile profile = new Profile();
1468                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1469                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1470                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1471                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1472                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1473                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1474
1475                 /* load profile fields. */
1476                 while (true) {
1477                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1478                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1479                         if (fieldName == null) {
1480                                 break;
1481                         }
1482                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1483                         profile.addField(fieldName).setValue(fieldValue);
1484                 }
1485
1486                 /* load posts. */
1487                 Set<Post> posts = new HashSet<Post>();
1488                 while (true) {
1489                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1490                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1491                         if (postId == null) {
1492                                 break;
1493                         }
1494                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1495                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1496                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1497                         if ((postTime == 0) || (postText == null)) {
1498                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1499                                 return;
1500                         }
1501                         Post post = getPost(postId).setSone(sone).setTime(postTime).setText(postText);
1502                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1503                                 post.setRecipient(getSone(postRecipientId));
1504                         }
1505                         posts.add(post);
1506                 }
1507
1508                 /* load replies. */
1509                 Set<PostReply> replies = new HashSet<PostReply>();
1510                 while (true) {
1511                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1512                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1513                         if (replyId == null) {
1514                                 break;
1515                         }
1516                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1517                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1518                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1519                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1520                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1521                                 return;
1522                         }
1523                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
1524                 }
1525
1526                 /* load post likes. */
1527                 Set<String> likedPostIds = new HashSet<String>();
1528                 while (true) {
1529                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1530                         if (likedPostId == null) {
1531                                 break;
1532                         }
1533                         likedPostIds.add(likedPostId);
1534                 }
1535
1536                 /* load reply likes. */
1537                 Set<String> likedReplyIds = new HashSet<String>();
1538                 while (true) {
1539                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1540                         if (likedReplyId == null) {
1541                                 break;
1542                         }
1543                         likedReplyIds.add(likedReplyId);
1544                 }
1545
1546                 /* load friends. */
1547                 Set<String> friends = new HashSet<String>();
1548                 while (true) {
1549                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1550                         if (friendId == null) {
1551                                 break;
1552                         }
1553                         friends.add(friendId);
1554                 }
1555
1556                 /* load albums. */
1557                 List<Album> topLevelAlbums = new ArrayList<Album>();
1558                 int albumCounter = 0;
1559                 while (true) {
1560                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1561                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1562                         if (albumId == null) {
1563                                 break;
1564                         }
1565                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1566                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1567                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1568                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1569                         if ((albumTitle == null) || (albumDescription == null)) {
1570                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1571                                 return;
1572                         }
1573                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1574                         if (albumParentId != null) {
1575                                 Album parentAlbum = getAlbum(albumParentId, false);
1576                                 if (parentAlbum == null) {
1577                                         logger.log(Level.WARNING, "Invalid parent album ID: " + albumParentId);
1578                                         return;
1579                                 }
1580                                 parentAlbum.addAlbum(album);
1581                         } else {
1582                                 topLevelAlbums.add(album);
1583                         }
1584                 }
1585
1586                 /* load images. */
1587                 int imageCounter = 0;
1588                 while (true) {
1589                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1590                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1591                         if (imageId == null) {
1592                                 break;
1593                         }
1594                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1595                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1596                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1597                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1598                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1599                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1600                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1601                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1602                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1603                                 return;
1604                         }
1605                         Album album = getAlbum(albumId, false);
1606                         if (album == null) {
1607                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1608                                 return;
1609                         }
1610                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1611                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1612                         album.addImage(image);
1613                 }
1614
1615                 /* load options. */
1616                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1617                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1618                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1619                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1620                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1621
1622                 /* if we’re still here, Sone was loaded successfully. */
1623                 synchronized (sone) {
1624                         sone.setTime(soneTime);
1625                         sone.setProfile(profile);
1626                         sone.setPosts(posts);
1627                         sone.setReplies(replies);
1628                         sone.setLikePostIds(likedPostIds);
1629                         sone.setLikeReplyIds(likedReplyIds);
1630                         for (String friendId : friends) {
1631                                 followSone(sone, friendId);
1632                         }
1633                         sone.setAlbums(topLevelAlbums);
1634                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1635                 }
1636                 synchronized (newSones) {
1637                         for (String friend : friends) {
1638                                 knownSones.add(friend);
1639                         }
1640                 }
1641                 synchronized (newPosts) {
1642                         for (Post post : posts) {
1643                                 knownPosts.add(post.getId());
1644                         }
1645                 }
1646                 synchronized (newReplies) {
1647                         for (PostReply reply : replies) {
1648                                 knownReplies.add(reply.getId());
1649                         }
1650                 }
1651         }
1652
1653         /**
1654          * Creates a new post.
1655          *
1656          * @param sone
1657          *            The Sone that creates the post
1658          * @param text
1659          *            The text of the post
1660          * @return The created post
1661          */
1662         public Post createPost(Sone sone, String text) {
1663                 return createPost(sone, System.currentTimeMillis(), text);
1664         }
1665
1666         /**
1667          * Creates a new post.
1668          *
1669          * @param sone
1670          *            The Sone that creates the post
1671          * @param time
1672          *            The time of the post
1673          * @param text
1674          *            The text of the post
1675          * @return The created post
1676          */
1677         public Post createPost(Sone sone, long time, String text) {
1678                 return createPost(sone, null, time, text);
1679         }
1680
1681         /**
1682          * Creates a new post.
1683          *
1684          * @param sone
1685          *            The Sone that creates the post
1686          * @param recipient
1687          *            The recipient Sone, or {@code null} if this post does not have
1688          *            a recipient
1689          * @param text
1690          *            The text of the post
1691          * @return The created post
1692          */
1693         public Post createPost(Sone sone, Sone recipient, String text) {
1694                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1695         }
1696
1697         /**
1698          * Creates a new post.
1699          *
1700          * @param sone
1701          *            The Sone that creates the post
1702          * @param recipient
1703          *            The recipient Sone, or {@code null} if this post does not have
1704          *            a recipient
1705          * @param time
1706          *            The time of the post
1707          * @param text
1708          *            The text of the post
1709          * @return The created post
1710          */
1711         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1712                 if (!isLocalSone(sone)) {
1713                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
1714                         return null;
1715                 }
1716                 final Post post = new Post(sone, time, text);
1717                 if (recipient != null) {
1718                         post.setRecipient(recipient);
1719                 }
1720                 synchronized (posts) {
1721                         posts.put(post.getId(), post);
1722                 }
1723                 synchronized (newPosts) {
1724                         newPosts.add(post.getId());
1725                         coreListenerManager.fireNewPostFound(post);
1726                 }
1727                 sone.addPost(post);
1728                 touchConfiguration();
1729                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1730
1731                         /**
1732                          * {@inheritDoc}
1733                          */
1734                         @Override
1735                         public void run() {
1736                                 markPostKnown(post);
1737                         }
1738                 }, "Mark " + post + " read.");
1739                 return post;
1740         }
1741
1742         /**
1743          * Deletes the given post.
1744          *
1745          * @param post
1746          *            The post to delete
1747          */
1748         public void deletePost(Post post) {
1749                 if (!isLocalSone(post.getSone())) {
1750                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
1751                         return;
1752                 }
1753                 post.getSone().removePost(post);
1754                 synchronized (posts) {
1755                         posts.remove(post.getId());
1756                 }
1757                 coreListenerManager.firePostRemoved(post);
1758                 synchronized (newPosts) {
1759                         markPostKnown(post);
1760                         knownPosts.remove(post.getId());
1761                 }
1762                 touchConfiguration();
1763         }
1764
1765         /**
1766          * Marks the given post as known, if it is currently a new post (according
1767          * to {@link #isNewPost(String)}).
1768          *
1769          * @param post
1770          *            The post to mark as known
1771          */
1772         public void markPostKnown(Post post) {
1773                 synchronized (newPosts) {
1774                         if (newPosts.remove(post.getId())) {
1775                                 knownPosts.add(post.getId());
1776                                 coreListenerManager.fireMarkPostKnown(post);
1777                                 touchConfiguration();
1778                         }
1779                 }
1780         }
1781
1782         /**
1783          * Bookmarks the given post.
1784          *
1785          * @param post
1786          *            The post to bookmark
1787          */
1788         public void bookmark(Post post) {
1789                 bookmarkPost(post.getId());
1790         }
1791
1792         /**
1793          * Bookmarks the post with the given ID.
1794          *
1795          * @param id
1796          *            The ID of the post to bookmark
1797          */
1798         public void bookmarkPost(String id) {
1799                 synchronized (bookmarkedPosts) {
1800                         bookmarkedPosts.add(id);
1801                 }
1802         }
1803
1804         /**
1805          * Removes the given post from the bookmarks.
1806          *
1807          * @param post
1808          *            The post to unbookmark
1809          */
1810         public void unbookmark(Post post) {
1811                 unbookmarkPost(post.getId());
1812         }
1813
1814         /**
1815          * Removes the post with the given ID from the bookmarks.
1816          *
1817          * @param id
1818          *            The ID of the post to unbookmark
1819          */
1820         public void unbookmarkPost(String id) {
1821                 synchronized (bookmarkedPosts) {
1822                         bookmarkedPosts.remove(id);
1823                 }
1824         }
1825
1826         /**
1827          * Creates a new reply.
1828          *
1829          * @param sone
1830          *            The Sone that creates the reply
1831          * @param post
1832          *            The post that this reply refers to
1833          * @param text
1834          *            The text of the reply
1835          * @return The created reply
1836          */
1837         public PostReply createReply(Sone sone, Post post, String text) {
1838                 return createReply(sone, post, System.currentTimeMillis(), text);
1839         }
1840
1841         /**
1842          * Creates a new reply.
1843          *
1844          * @param sone
1845          *            The Sone that creates the reply
1846          * @param post
1847          *            The post that this reply refers to
1848          * @param time
1849          *            The time of the reply
1850          * @param text
1851          *            The text of the reply
1852          * @return The created reply
1853          */
1854         public PostReply createReply(Sone sone, Post post, long time, String text) {
1855                 if (!isLocalSone(sone)) {
1856                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
1857                         return null;
1858                 }
1859                 final PostReply reply = new PostReply(sone, post, System.currentTimeMillis(), text);
1860                 synchronized (replies) {
1861                         replies.put(reply.getId(), reply);
1862                 }
1863                 synchronized (newReplies) {
1864                         newReplies.add(reply.getId());
1865                         coreListenerManager.fireNewReplyFound(reply);
1866                 }
1867                 sone.addReply(reply);
1868                 touchConfiguration();
1869                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1870
1871                         /**
1872                          * {@inheritDoc}
1873                          */
1874                         @Override
1875                         public void run() {
1876                                 markReplyKnown(reply);
1877                         }
1878                 }, "Mark " + reply + " read.");
1879                 return reply;
1880         }
1881
1882         /**
1883          * Deletes the given reply.
1884          *
1885          * @param reply
1886          *            The reply to delete
1887          */
1888         public void deleteReply(PostReply reply) {
1889                 Sone sone = reply.getSone();
1890                 if (!isLocalSone(sone)) {
1891                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
1892                         return;
1893                 }
1894                 synchronized (replies) {
1895                         replies.remove(reply.getId());
1896                 }
1897                 synchronized (newReplies) {
1898                         markReplyKnown(reply);
1899                         knownReplies.remove(reply.getId());
1900                 }
1901                 sone.removeReply(reply);
1902                 touchConfiguration();
1903         }
1904
1905         /**
1906          * Marks the given reply as known, if it is currently a new reply (according
1907          * to {@link #isNewReply(String)}).
1908          *
1909          * @param reply
1910          *            The reply to mark as known
1911          */
1912         public void markReplyKnown(PostReply reply) {
1913                 synchronized (newReplies) {
1914                         if (newReplies.remove(reply.getId())) {
1915                                 knownReplies.add(reply.getId());
1916                                 coreListenerManager.fireMarkReplyKnown(reply);
1917                                 touchConfiguration();
1918                         }
1919                 }
1920         }
1921
1922         /**
1923          * Creates a new top-level album for the given Sone.
1924          *
1925          * @param sone
1926          *            The Sone to create the album for
1927          * @return The new album
1928          */
1929         public Album createAlbum(Sone sone) {
1930                 return createAlbum(sone, null);
1931         }
1932
1933         /**
1934          * Creates a new album for the given Sone.
1935          *
1936          * @param sone
1937          *            The Sone to create the album for
1938          * @param parent
1939          *            The parent of the album (may be {@code null} to create a
1940          *            top-level album)
1941          * @return The new album
1942          */
1943         public Album createAlbum(Sone sone, Album parent) {
1944                 Album album = new Album();
1945                 synchronized (albums) {
1946                         albums.put(album.getId(), album);
1947                 }
1948                 album.setSone(sone);
1949                 if (parent != null) {
1950                         parent.addAlbum(album);
1951                 } else {
1952                         sone.addAlbum(album);
1953                 }
1954                 return album;
1955         }
1956
1957         /**
1958          * Deletes the given album. The owner of the album has to be a local Sone,
1959          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1960          *
1961          * @param album
1962          *            The album to remove
1963          */
1964         public void deleteAlbum(Album album) {
1965                 Validation.begin().isNotNull("Album", album).check().is("Local Sone", isLocalSone(album.getSone())).check();
1966                 if (!album.isEmpty()) {
1967                         return;
1968                 }
1969                 if (album.getParent() == null) {
1970                         album.getSone().removeAlbum(album);
1971                 } else {
1972                         album.getParent().removeAlbum(album);
1973                 }
1974                 synchronized (albums) {
1975                         albums.remove(album.getId());
1976                 }
1977                 saveSone(album.getSone());
1978         }
1979
1980         /**
1981          * Creates a new image.
1982          *
1983          * @param sone
1984          *            The Sone creating the image
1985          * @param album
1986          *            The album the image will be inserted into
1987          * @param temporaryImage
1988          *            The temporary image to create the image from
1989          * @return The newly created image
1990          */
1991         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1992                 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();
1993                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1994                 album.addImage(image);
1995                 synchronized (images) {
1996                         images.put(image.getId(), image);
1997                 }
1998                 imageInserter.insertImage(temporaryImage, image);
1999                 return image;
2000         }
2001
2002         /**
2003          * Deletes the given image. This method will also delete a matching
2004          * temporary image.
2005          *
2006          * @see #deleteTemporaryImage(TemporaryImage)
2007          * @param image
2008          *            The image to delete
2009          */
2010         public void deleteImage(Image image) {
2011                 Validation.begin().isNotNull("Image", image).check().is("Local Sone", isLocalSone(image.getSone())).check();
2012                 deleteTemporaryImage(image.getId());
2013                 image.getAlbum().removeImage(image);
2014                 synchronized (images) {
2015                         images.remove(image.getId());
2016                 }
2017                 saveSone(image.getSone());
2018         }
2019
2020         /**
2021          * Creates a new temporary image.
2022          *
2023          * @param mimeType
2024          *            The MIME type of the temporary image
2025          * @param imageData
2026          *            The encoded data of the image
2027          * @return The temporary image
2028          */
2029         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
2030                 TemporaryImage temporaryImage = new TemporaryImage();
2031                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
2032                 synchronized (temporaryImages) {
2033                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
2034                 }
2035                 return temporaryImage;
2036         }
2037
2038         /**
2039          * Deletes the given temporary image.
2040          *
2041          * @param temporaryImage
2042          *            The temporary image to delete
2043          */
2044         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
2045                 Validation.begin().isNotNull("Temporary Image", temporaryImage).check();
2046                 deleteTemporaryImage(temporaryImage.getId());
2047         }
2048
2049         /**
2050          * Deletes the temporary image with the given ID.
2051          *
2052          * @param imageId
2053          *            The ID of the temporary image to delete
2054          */
2055         public void deleteTemporaryImage(String imageId) {
2056                 Validation.begin().isNotNull("Temporary Image ID", imageId).check();
2057                 synchronized (temporaryImages) {
2058                         temporaryImages.remove(imageId);
2059                 }
2060                 Image image = getImage(imageId, false);
2061                 if (image != null) {
2062                         imageInserter.cancelImageInsert(image);
2063                 }
2064         }
2065
2066         /**
2067          * Notifies the core that the configuration, either of the core or of a
2068          * single local Sone, has changed, and that the configuration should be
2069          * saved.
2070          */
2071         public void touchConfiguration() {
2072                 lastConfigurationUpdate = System.currentTimeMillis();
2073         }
2074
2075         //
2076         // SERVICE METHODS
2077         //
2078
2079         /**
2080          * Starts the core.
2081          */
2082         @Override
2083         public void serviceStart() {
2084                 loadConfiguration();
2085                 updateChecker.addUpdateListener(this);
2086                 updateChecker.start();
2087         }
2088
2089         /**
2090          * {@inheritDoc}
2091          */
2092         @Override
2093         public void serviceRun() {
2094                 long lastSaved = System.currentTimeMillis();
2095                 while (!shouldStop()) {
2096                         sleep(1000);
2097                         long now = System.currentTimeMillis();
2098                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
2099                                 for (Sone localSone : getLocalSones()) {
2100                                         saveSone(localSone);
2101                                 }
2102                                 saveConfiguration();
2103                                 lastSaved = now;
2104                         }
2105                 }
2106         }
2107
2108         /**
2109          * Stops the core.
2110          */
2111         @Override
2112         public void serviceStop() {
2113                 synchronized (localSones) {
2114                         for (SoneInserter soneInserter : soneInserters.values()) {
2115                                 soneInserter.removeSoneInsertListener(this);
2116                                 soneInserter.stop();
2117                         }
2118                 }
2119                 updateChecker.stop();
2120                 updateChecker.removeUpdateListener(this);
2121                 soneDownloader.stop();
2122         }
2123
2124         //
2125         // PRIVATE METHODS
2126         //
2127
2128         /**
2129          * Saves the given Sone. This will persist all local settings for the given
2130          * Sone, such as the friends list and similar, private options.
2131          *
2132          * @param sone
2133          *            The Sone to save
2134          */
2135         private synchronized void saveSone(Sone sone) {
2136                 if (!isLocalSone(sone)) {
2137                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
2138                         return;
2139                 }
2140                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
2141                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
2142                         return;
2143                 }
2144
2145                 logger.log(Level.INFO, "Saving Sone: %s", sone);
2146                 try {
2147                         /* save Sone into configuration. */
2148                         String sonePrefix = "Sone/" + sone.getId();
2149                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
2150                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
2151
2152                         /* save profile. */
2153                         Profile profile = sone.getProfile();
2154                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
2155                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
2156                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
2157                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
2158                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
2159                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
2160
2161                         /* save profile fields. */
2162                         int fieldCounter = 0;
2163                         for (Field profileField : profile.getFields()) {
2164                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
2165                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
2166                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
2167                         }
2168                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
2169
2170                         /* save posts. */
2171                         int postCounter = 0;
2172                         for (Post post : sone.getPosts()) {
2173                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
2174                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
2175                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
2176                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
2177                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
2178                         }
2179                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
2180
2181                         /* save replies. */
2182                         int replyCounter = 0;
2183                         for (PostReply reply : sone.getReplies()) {
2184                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
2185                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
2186                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
2187                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
2188                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
2189                         }
2190                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
2191
2192                         /* save post likes. */
2193                         int postLikeCounter = 0;
2194                         for (String postId : sone.getLikedPostIds()) {
2195                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
2196                         }
2197                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
2198
2199                         /* save reply likes. */
2200                         int replyLikeCounter = 0;
2201                         for (String replyId : sone.getLikedReplyIds()) {
2202                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
2203                         }
2204                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
2205
2206                         /* save friends. */
2207                         int friendCounter = 0;
2208                         for (String friendId : sone.getFriends()) {
2209                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
2210                         }
2211                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
2212
2213                         /* save albums. first, collect in a flat structure, top-level first. */
2214                         List<Album> albums = sone.getAllAlbums();
2215
2216                         int albumCounter = 0;
2217                         for (Album album : albums) {
2218                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
2219                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
2220                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
2221                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
2222                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
2223                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
2224                         }
2225                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
2226
2227                         /* save images. */
2228                         int imageCounter = 0;
2229                         for (Album album : albums) {
2230                                 for (Image image : album.getImages()) {
2231                                         if (!image.isInserted()) {
2232                                                 continue;
2233                                         }
2234                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
2235                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
2236                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
2237                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
2238                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
2239                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
2240                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
2241                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
2242                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
2243                                 }
2244                         }
2245                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
2246
2247                         /* save options. */
2248                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
2249                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
2250                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
2251                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
2252                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
2253
2254                         configuration.save();
2255
2256                         ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
2257
2258                         logger.log(Level.INFO, "Sone %s saved.", sone);
2259                 } catch (ConfigurationException ce1) {
2260                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
2261                 } catch (WebOfTrustException wote1) {
2262                         logger.log(Level.WARNING, "Could not set WoT property for Sone: " + sone, wote1);
2263                 }
2264         }
2265
2266         /**
2267          * Saves the current options.
2268          */
2269         private void saveConfiguration() {
2270                 synchronized (configuration) {
2271                         if (storingConfiguration) {
2272                                 logger.log(Level.FINE, "Already storing configuration…");
2273                                 return;
2274                         }
2275                         storingConfiguration = true;
2276                 }
2277
2278                 /* store the options first. */
2279                 try {
2280                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
2281                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
2282                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
2283                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
2284                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
2285                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
2286                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
2287                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
2288                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
2289                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
2290                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
2291                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
2292                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
2293                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
2294
2295                         /* save known Sones. */
2296                         int soneCounter = 0;
2297                         synchronized (newSones) {
2298                                 for (String knownSoneId : knownSones) {
2299                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
2300                                 }
2301                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
2302                         }
2303
2304                         /* save Sone following times. */
2305                         soneCounter = 0;
2306                         synchronized (soneFollowingTimes) {
2307                                 for (Entry<Sone, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
2308                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey().getId());
2309                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
2310                                         ++soneCounter;
2311                                 }
2312                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
2313                         }
2314
2315                         /* save known posts. */
2316                         int postCounter = 0;
2317                         synchronized (newPosts) {
2318                                 for (String knownPostId : knownPosts) {
2319                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
2320                                 }
2321                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
2322                         }
2323
2324                         /* save known replies. */
2325                         int replyCounter = 0;
2326                         synchronized (newReplies) {
2327                                 for (String knownReplyId : knownReplies) {
2328                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
2329                                 }
2330                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
2331                         }
2332
2333                         /* save bookmarked posts. */
2334                         int bookmarkedPostCounter = 0;
2335                         synchronized (bookmarkedPosts) {
2336                                 for (String bookmarkedPostId : bookmarkedPosts) {
2337                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
2338                                 }
2339                         }
2340                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
2341
2342                         /* now save it. */
2343                         configuration.save();
2344
2345                 } catch (ConfigurationException ce1) {
2346                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
2347                 } finally {
2348                         synchronized (configuration) {
2349                                 storingConfiguration = false;
2350                         }
2351                 }
2352         }
2353
2354         /**
2355          * Loads the configuration.
2356          */
2357         @SuppressWarnings("unchecked")
2358         private void loadConfiguration() {
2359                 /* create options. */
2360                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangeValidator(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2361
2362                         @Override
2363                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2364                                 SoneInserter.setInsertionDelay(newValue);
2365                         }
2366
2367                 }));
2368                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
2369                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2370                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2371                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2372                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangeValidator(0, 100)));
2373                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangeValidator(-100, 100)));
2374                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2375                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2376
2377                         @Override
2378                         @SuppressWarnings("synthetic-access")
2379                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2380                                 fcpInterface.setActive(newValue);
2381                         }
2382                 }));
2383                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2384
2385                         @Override
2386                         @SuppressWarnings("synthetic-access")
2387                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2388                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2389                         }
2390
2391                 }));
2392                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
2393                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
2394                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
2395
2396                 /* read options from configuration. */
2397                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
2398                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
2399                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
2400                 options.getBooleanOption("ClearOnNextRestart").set(null);
2401                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
2402                 if (clearConfiguration) {
2403                         /* stop loading the configuration. */
2404                         return;
2405                 }
2406
2407                 loadConfigurationValue("InsertionDelay");
2408                 loadConfigurationValue("PostsPerPage");
2409                 loadConfigurationValue("CharactersPerPost");
2410                 loadConfigurationValue("PostCutOffLength");
2411                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2412                 loadConfigurationValue("PositiveTrust");
2413                 loadConfigurationValue("NegativeTrust");
2414                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2415                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2416                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2417                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
2418
2419                 /* load known Sones. */
2420                 int soneCounter = 0;
2421                 while (true) {
2422                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2423                         if (knownSoneId == null) {
2424                                 break;
2425                         }
2426                         synchronized (newSones) {
2427                                 knownSones.add(knownSoneId);
2428                         }
2429                 }
2430
2431                 /* load Sone following times. */
2432                 soneCounter = 0;
2433                 while (true) {
2434                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2435                         if (soneId == null) {
2436                                 break;
2437                         }
2438                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2439                         synchronized (soneFollowingTimes) {
2440                                 soneFollowingTimes.put(getSone(soneId), time);
2441                         }
2442                         ++soneCounter;
2443                 }
2444
2445                 /* load known posts. */
2446                 int postCounter = 0;
2447                 while (true) {
2448                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
2449                         if (knownPostId == null) {
2450                                 break;
2451                         }
2452                         synchronized (newPosts) {
2453                                 knownPosts.add(knownPostId);
2454                         }
2455                 }
2456
2457                 /* load known replies. */
2458                 int replyCounter = 0;
2459                 while (true) {
2460                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
2461                         if (knownReplyId == null) {
2462                                 break;
2463                         }
2464                         synchronized (newReplies) {
2465                                 knownReplies.add(knownReplyId);
2466                         }
2467                 }
2468
2469                 /* load bookmarked posts. */
2470                 int bookmarkedPostCounter = 0;
2471                 while (true) {
2472                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2473                         if (bookmarkedPostId == null) {
2474                                 break;
2475                         }
2476                         synchronized (bookmarkedPosts) {
2477                                 bookmarkedPosts.add(bookmarkedPostId);
2478                         }
2479                 }
2480
2481         }
2482
2483         /**
2484          * Loads an {@link Integer} configuration value for the option with the
2485          * given name, logging validation failures.
2486          *
2487          * @param optionName
2488          *            The name of the option to load
2489          */
2490         private void loadConfigurationValue(String optionName) {
2491                 try {
2492                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2493                 } catch (IllegalArgumentException iae1) {
2494                         logger.log(Level.WARNING, "Invalid value for " + optionName + " in configuration, using default.");
2495                 }
2496         }
2497
2498         /**
2499          * Generate a Sone URI from the given URI and latest edition.
2500          *
2501          * @param uriString
2502          *            The URI to derive the Sone URI from
2503          * @return The derived URI
2504          */
2505         private FreenetURI getSoneUri(String uriString) {
2506                 try {
2507                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
2508                         return uri;
2509                 } catch (MalformedURLException mue1) {
2510                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
2511                         return null;
2512                 }
2513         }
2514
2515         //
2516         // INTERFACE IdentityListener
2517         //
2518
2519         /**
2520          * {@inheritDoc}
2521          */
2522         @Override
2523         public void ownIdentityAdded(OwnIdentity ownIdentity) {
2524                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
2525                 if (ownIdentity.hasContext("Sone")) {
2526                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2527                         addLocalSone(ownIdentity);
2528                 }
2529         }
2530
2531         /**
2532          * {@inheritDoc}
2533          */
2534         @Override
2535         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
2536                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
2537                 trustedIdentities.remove(ownIdentity);
2538         }
2539
2540         /**
2541          * {@inheritDoc}
2542          */
2543         @Override
2544         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
2545                 logger.log(Level.FINEST, "Adding Identity: " + identity);
2546                 trustedIdentities.get(ownIdentity).add(identity);
2547                 addRemoteSone(identity);
2548         }
2549
2550         /**
2551          * {@inheritDoc}
2552          */
2553         @Override
2554         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
2555                 new Thread(new Runnable() {
2556
2557                         @Override
2558                         @SuppressWarnings("synthetic-access")
2559                         public void run() {
2560                                 Sone sone = getRemoteSone(identity.getId());
2561                                 sone.setIdentity(identity);
2562                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2563                                 soneDownloader.addSone(sone);
2564                                 soneDownloader.fetchSone(sone);
2565                         }
2566                 }).start();
2567         }
2568
2569         /**
2570          * {@inheritDoc}
2571          */
2572         @Override
2573         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
2574                 trustedIdentities.get(ownIdentity).remove(identity);
2575                 boolean foundIdentity = false;
2576                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2577                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2578                                 continue;
2579                         }
2580                         if (trustedIdentity.getValue().contains(identity)) {
2581                                 foundIdentity = true;
2582                         }
2583                 }
2584                 if (foundIdentity) {
2585                         /* some local identity still trusts this identity, don’t remove. */
2586                         return;
2587                 }
2588                 Sone sone = getSone(identity.getId(), false);
2589                 if (sone == null) {
2590                         /* TODO - we don’t have the Sone anymore. should this happen? */
2591                         return;
2592                 }
2593                 synchronized (posts) {
2594                         synchronized (newPosts) {
2595                                 for (Post post : sone.getPosts()) {
2596                                         posts.remove(post.getId());
2597                                         newPosts.remove(post.getId());
2598                                         coreListenerManager.firePostRemoved(post);
2599                                 }
2600                         }
2601                 }
2602                 synchronized (replies) {
2603                         synchronized (newReplies) {
2604                                 for (PostReply reply : sone.getReplies()) {
2605                                         replies.remove(reply.getId());
2606                                         newReplies.remove(reply.getId());
2607                                         coreListenerManager.fireReplyRemoved(reply);
2608                                 }
2609                         }
2610                 }
2611                 synchronized (remoteSones) {
2612                         remoteSones.remove(identity.getId());
2613                 }
2614                 synchronized (newSones) {
2615                         newSones.remove(identity.getId());
2616                         coreListenerManager.fireSoneRemoved(sone);
2617                 }
2618         }
2619
2620         //
2621         // INTERFACE UpdateListener
2622         //
2623
2624         /**
2625          * {@inheritDoc}
2626          */
2627         @Override
2628         public void updateFound(Version version, long releaseTime, long latestEdition) {
2629                 coreListenerManager.fireUpdateFound(version, releaseTime, latestEdition);
2630         }
2631
2632         //
2633         // INTERFACE ImageInsertListener
2634         //
2635
2636         /**
2637          * {@inheritDoc}
2638          */
2639         @Override
2640         public void insertStarted(Sone sone) {
2641                 coreListenerManager.fireSoneInserting(sone);
2642         }
2643
2644         /**
2645          * {@inheritDoc}
2646          */
2647         @Override
2648         public void insertFinished(Sone sone, long insertDuration) {
2649                 coreListenerManager.fireSoneInserted(sone, insertDuration);
2650         }
2651
2652         /**
2653          * {@inheritDoc}
2654          */
2655         @Override
2656         public void insertAborted(Sone sone, Throwable cause) {
2657                 coreListenerManager.fireSoneInsertAborted(sone, cause);
2658         }
2659
2660         //
2661         // SONEINSERTLISTENER METHODS
2662         //
2663
2664         /**
2665          * {@inheritDoc}
2666          */
2667         @Override
2668         public void imageInsertStarted(Image image) {
2669                 logger.log(Level.WARNING, "Image insert started for " + image);
2670                 coreListenerManager.fireImageInsertStarted(image);
2671         }
2672
2673         /**
2674          * {@inheritDoc}
2675          */
2676         @Override
2677         public void imageInsertAborted(Image image) {
2678                 logger.log(Level.WARNING, "Image insert aborted for " + image);
2679                 coreListenerManager.fireImageInsertAborted(image);
2680         }
2681
2682         /**
2683          * {@inheritDoc}
2684          */
2685         @Override
2686         public void imageInsertFinished(Image image, FreenetURI key) {
2687                 logger.log(Level.WARNING, "Image insert finished for " + image + ": " + key);
2688                 image.setKey(key.toString());
2689                 deleteTemporaryImage(image.getId());
2690                 saveSone(image.getSone());
2691                 coreListenerManager.fireImageInsertFinished(image);
2692         }
2693
2694         /**
2695          * {@inheritDoc}
2696          */
2697         @Override
2698         public void imageInsertFailed(Image image, Throwable cause) {
2699                 logger.log(Level.WARNING, "Image insert failed for " + image, cause);
2700                 coreListenerManager.fireImageInsertFailed(image, cause);
2701         }
2702
2703         /**
2704          * Convenience interface for external classes that want to access the core’s
2705          * configuration.
2706          *
2707          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
2708          */
2709         public static class Preferences {
2710
2711                 /** The wrapped options. */
2712                 private final Options options;
2713
2714                 /**
2715                  * Creates a new preferences object wrapped around the given options.
2716                  *
2717                  * @param options
2718                  *            The options to wrap
2719                  */
2720                 public Preferences(Options options) {
2721                         this.options = options;
2722                 }
2723
2724                 /**
2725                  * Returns the insertion delay.
2726                  *
2727                  * @return The insertion delay
2728                  */
2729                 public int getInsertionDelay() {
2730                         return options.getIntegerOption("InsertionDelay").get();
2731                 }
2732
2733                 /**
2734                  * Validates the given insertion delay.
2735                  *
2736                  * @param insertionDelay
2737                  *            The insertion delay to validate
2738                  * @return {@code true} if the given insertion delay was valid, {@code
2739                  *         false} otherwise
2740                  */
2741                 public boolean validateInsertionDelay(Integer insertionDelay) {
2742                         return options.getIntegerOption("InsertionDelay").validate(insertionDelay);
2743                 }
2744
2745                 /**
2746                  * Sets the insertion delay
2747                  *
2748                  * @param insertionDelay
2749                  *            The new insertion delay, or {@code null} to restore it to
2750                  *            the default value
2751                  * @return This preferences
2752                  */
2753                 public Preferences setInsertionDelay(Integer insertionDelay) {
2754                         options.getIntegerOption("InsertionDelay").set(insertionDelay);
2755                         return this;
2756                 }
2757
2758                 /**
2759                  * Returns the number of posts to show per page.
2760                  *
2761                  * @return The number of posts to show per page
2762                  */
2763                 public int getPostsPerPage() {
2764                         return options.getIntegerOption("PostsPerPage").get();
2765                 }
2766
2767                 /**
2768                  * Validates the number of posts per page.
2769                  *
2770                  * @param postsPerPage
2771                  *            The number of posts per page
2772                  * @return {@code true} if the number of posts per page was valid,
2773                  *         {@code false} otherwise
2774                  */
2775                 public boolean validatePostsPerPage(Integer postsPerPage) {
2776                         return options.getIntegerOption("PostsPerPage").validate(postsPerPage);
2777                 }
2778
2779                 /**
2780                  * Sets the number of posts to show per page.
2781                  *
2782                  * @param postsPerPage
2783                  *            The number of posts to show per page
2784                  * @return This preferences object
2785                  */
2786                 public Preferences setPostsPerPage(Integer postsPerPage) {
2787                         options.getIntegerOption("PostsPerPage").set(postsPerPage);
2788                         return this;
2789                 }
2790
2791                 /**
2792                  * Returns the number of characters per post, or <code>-1</code> if the
2793                  * posts should not be cut off.
2794                  *
2795                  * @return The numbers of characters per post
2796                  */
2797                 public int getCharactersPerPost() {
2798                         return options.getIntegerOption("CharactersPerPost").get();
2799                 }
2800
2801                 /**
2802                  * Validates the number of characters per post.
2803                  *
2804                  * @param charactersPerPost
2805                  *            The number of characters per post
2806                  * @return {@code true} if the number of characters per post was valid,
2807                  *         {@code false} otherwise
2808                  */
2809                 public boolean validateCharactersPerPost(Integer charactersPerPost) {
2810                         return options.getIntegerOption("CharactersPerPost").validate(charactersPerPost);
2811                 }
2812
2813                 /**
2814                  * Sets the number of characters per post.
2815                  *
2816                  * @param charactersPerPost
2817                  *            The number of characters per post, or <code>-1</code> to
2818                  *            not cut off the posts
2819                  * @return This preferences objects
2820                  */
2821                 public Preferences setCharactersPerPost(Integer charactersPerPost) {
2822                         options.getIntegerOption("CharactersPerPost").set(charactersPerPost);
2823                         return this;
2824                 }
2825
2826                 /**
2827                  * Returns the number of characters the shortened post should have.
2828                  *
2829                  * @return The number of characters of the snippet
2830                  */
2831                 public int getPostCutOffLength() {
2832                         return options.getIntegerOption("PostCutOffLength").get();
2833                 }
2834
2835                 /**
2836                  * Validates the number of characters after which to cut off the post.
2837                  *
2838                  * @param postCutOffLength
2839                  *            The number of characters of the snippet
2840                  * @return {@code true} if the number of characters of the snippet is
2841                  *         valid, {@code false} otherwise
2842                  */
2843                 public boolean validatePostCutOffLength(Integer postCutOffLength) {
2844                         return options.getIntegerOption("PostCutOffLength").validate(postCutOffLength);
2845                 }
2846
2847                 /**
2848                  * Sets the number of characters the shortened post should have.
2849                  *
2850                  * @param postCutOffLength
2851                  *            The number of characters of the snippet
2852                  * @return This preferences
2853                  */
2854                 public Preferences setPostCutOffLength(Integer postCutOffLength) {
2855                         options.getIntegerOption("PostCutOffLength").set(postCutOffLength);
2856                         return this;
2857                 }
2858
2859                 /**
2860                  * Returns whether Sone requires full access to be even visible.
2861                  *
2862                  * @return {@code true} if Sone requires full access, {@code false}
2863                  *         otherwise
2864                  */
2865                 public boolean isRequireFullAccess() {
2866                         return options.getBooleanOption("RequireFullAccess").get();
2867                 }
2868
2869                 /**
2870                  * Sets whether Sone requires full access to be even visible.
2871                  *
2872                  * @param requireFullAccess
2873                  *            {@code true} if Sone requires full access, {@code false}
2874                  *            otherwise
2875                  */
2876                 public void setRequireFullAccess(Boolean requireFullAccess) {
2877                         options.getBooleanOption("RequireFullAccess").set(requireFullAccess);
2878                 }
2879
2880                 /**
2881                  * Returns the positive trust.
2882                  *
2883                  * @return The positive trust
2884                  */
2885                 public int getPositiveTrust() {
2886                         return options.getIntegerOption("PositiveTrust").get();
2887                 }
2888
2889                 /**
2890                  * Validates the positive trust.
2891                  *
2892                  * @param positiveTrust
2893                  *            The positive trust to validate
2894                  * @return {@code true} if the positive trust was valid, {@code false}
2895                  *         otherwise
2896                  */
2897                 public boolean validatePositiveTrust(Integer positiveTrust) {
2898                         return options.getIntegerOption("PositiveTrust").validate(positiveTrust);
2899                 }
2900
2901                 /**
2902                  * Sets the positive trust.
2903                  *
2904                  * @param positiveTrust
2905                  *            The new positive trust, or {@code null} to restore it to
2906                  *            the default vlaue
2907                  * @return This preferences
2908                  */
2909                 public Preferences setPositiveTrust(Integer positiveTrust) {
2910                         options.getIntegerOption("PositiveTrust").set(positiveTrust);
2911                         return this;
2912                 }
2913
2914                 /**
2915                  * Returns the negative trust.
2916                  *
2917                  * @return The negative trust
2918                  */
2919                 public int getNegativeTrust() {
2920                         return options.getIntegerOption("NegativeTrust").get();
2921                 }
2922
2923                 /**
2924                  * Validates the negative trust.
2925                  *
2926                  * @param negativeTrust
2927                  *            The negative trust to validate
2928                  * @return {@code true} if the negative trust was valid, {@code false}
2929                  *         otherwise
2930                  */
2931                 public boolean validateNegativeTrust(Integer negativeTrust) {
2932                         return options.getIntegerOption("NegativeTrust").validate(negativeTrust);
2933                 }
2934
2935                 /**
2936                  * Sets the negative trust.
2937                  *
2938                  * @param negativeTrust
2939                  *            The negative trust, or {@code null} to restore it to the
2940                  *            default value
2941                  * @return The preferences
2942                  */
2943                 public Preferences setNegativeTrust(Integer negativeTrust) {
2944                         options.getIntegerOption("NegativeTrust").set(negativeTrust);
2945                         return this;
2946                 }
2947
2948                 /**
2949                  * Returns the trust comment. This is the comment that is set in the web
2950                  * of trust when a trust value is assigned to an identity.
2951                  *
2952                  * @return The trust comment
2953                  */
2954                 public String getTrustComment() {
2955                         return options.getStringOption("TrustComment").get();
2956                 }
2957
2958                 /**
2959                  * Sets the trust comment.
2960                  *
2961                  * @param trustComment
2962                  *            The trust comment, or {@code null} to restore it to the
2963                  *            default value
2964                  * @return This preferences
2965                  */
2966                 public Preferences setTrustComment(String trustComment) {
2967                         options.getStringOption("TrustComment").set(trustComment);
2968                         return this;
2969                 }
2970
2971                 /**
2972                  * Returns whether the {@link FcpInterface FCP interface} is currently
2973                  * active.
2974                  *
2975                  * @see FcpInterface#setActive(boolean)
2976                  * @return {@code true} if the FCP interface is currently active,
2977                  *         {@code false} otherwise
2978                  */
2979                 public boolean isFcpInterfaceActive() {
2980                         return options.getBooleanOption("ActivateFcpInterface").get();
2981                 }
2982
2983                 /**
2984                  * Sets whether the {@link FcpInterface FCP interface} is currently
2985                  * active.
2986                  *
2987                  * @see FcpInterface#setActive(boolean)
2988                  * @param fcpInterfaceActive
2989                  *            {@code true} to activate the FCP interface, {@code false}
2990                  *            to deactivate the FCP interface
2991                  * @return This preferences object
2992                  */
2993                 public Preferences setFcpInterfaceActive(boolean fcpInterfaceActive) {
2994                         options.getBooleanOption("ActivateFcpInterface").set(fcpInterfaceActive);
2995                         return this;
2996                 }
2997
2998                 /**
2999                  * Returns the action level for which full access to the FCP interface
3000                  * is required.
3001                  *
3002                  * @return The action level for which full access to the FCP interface
3003                  *         is required
3004                  */
3005                 public FullAccessRequired getFcpFullAccessRequired() {
3006                         return FullAccessRequired.values()[options.getIntegerOption("FcpFullAccessRequired").get()];
3007                 }
3008
3009                 /**
3010                  * Sets the action level for which full access to the FCP interface is
3011                  * required
3012                  *
3013                  * @param fcpFullAccessRequired
3014                  *            The action level
3015                  * @return This preferences
3016                  */
3017                 public Preferences setFcpFullAccessRequired(FullAccessRequired fcpFullAccessRequired) {
3018                         options.getIntegerOption("FcpFullAccessRequired").set((fcpFullAccessRequired != null) ? fcpFullAccessRequired.ordinal() : null);
3019                         return this;
3020                 }
3021
3022                 /**
3023                  * Returns whether Sone should clear its settings on the next restart.
3024                  * In order to be effective, {@link #isReallyClearOnNextRestart()} needs
3025                  * to return {@code true} as well!
3026                  *
3027                  * @return {@code true} if Sone should clear its settings on the next
3028                  *         restart, {@code false} otherwise
3029                  */
3030                 public boolean isClearOnNextRestart() {
3031                         return options.getBooleanOption("ClearOnNextRestart").get();
3032                 }
3033
3034                 /**
3035                  * Sets whether Sone will clear its settings on the next restart.
3036                  *
3037                  * @param clearOnNextRestart
3038                  *            {@code true} if Sone should clear its settings on the next
3039                  *            restart, {@code false} otherwise
3040                  * @return This preferences
3041                  */
3042                 public Preferences setClearOnNextRestart(Boolean clearOnNextRestart) {
3043                         options.getBooleanOption("ClearOnNextRestart").set(clearOnNextRestart);
3044                         return this;
3045                 }
3046
3047                 /**
3048                  * Returns whether Sone should really clear its settings on next
3049                  * restart. This is a confirmation option that needs to be set in
3050                  * addition to {@link #isClearOnNextRestart()} in order to clear Sone’s
3051                  * settings on the next restart.
3052                  *
3053                  * @return {@code true} if Sone should really clear its settings on the
3054                  *         next restart, {@code false} otherwise
3055                  */
3056                 public boolean isReallyClearOnNextRestart() {
3057                         return options.getBooleanOption("ReallyClearOnNextRestart").get();
3058                 }
3059
3060                 /**
3061                  * Sets whether Sone should really clear its settings on the next
3062                  * restart.
3063                  *
3064                  * @param reallyClearOnNextRestart
3065                  *            {@code true} if Sone should really clear its settings on
3066                  *            the next restart, {@code false} otherwise
3067                  * @return This preferences
3068                  */
3069                 public Preferences setReallyClearOnNextRestart(Boolean reallyClearOnNextRestart) {
3070                         options.getBooleanOption("ReallyClearOnNextRestart").set(reallyClearOnNextRestart);
3071                         return this;
3072                 }
3073
3074         }
3075
3076 }