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