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

   1 /*
   2  * Sone - Core.java - Copyright © 2010–2012 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collection;
  23 import java.util.Collections;
  24 import java.util.HashMap;
  25 import java.util.HashSet;
  26 import java.util.List;
  27 import java.util.Map;
  28 import java.util.Map.Entry;
  29 import java.util.Set;
  30 import java.util.concurrent.ExecutorService;
  31 import java.util.concurrent.Executors;
  32 import java.util.logging.Level;
  33 import java.util.logging.Logger;
  34
  35 import net.pterodactylus.sone.core.Options.DefaultOption;
  36 import net.pterodactylus.sone.core.Options.Option;
  37 import net.pterodactylus.sone.core.Options.OptionWatcher;
  38 import net.pterodactylus.sone.data.Album;
  39 import net.pterodactylus.sone.data.Client;
  40 import net.pterodactylus.sone.data.Image;
  41 import net.pterodactylus.sone.data.Post;
  42 import net.pterodactylus.sone.data.PostReply;
  43 import net.pterodactylus.sone.data.Profile;
  44 import net.pterodactylus.sone.data.Profile.Field;
  45 import net.pterodactylus.sone.data.Reply;
  46 import net.pterodactylus.sone.data.Sone;
  47 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  48 import net.pterodactylus.sone.data.Sone.SoneStatus;
  49 import net.pterodactylus.sone.data.TemporaryImage;
  50 import net.pterodactylus.sone.data.impl.PostImpl;
  51 import net.pterodactylus.sone.database.Database;
  52 import net.pterodactylus.sone.fcp.FcpInterface;
  53 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  54 import net.pterodactylus.sone.freenet.wot.Identity;
  55 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  56 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  57 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  58 import net.pterodactylus.sone.main.SonePlugin;
  59 import net.pterodactylus.util.config.Configuration;
  60 import net.pterodactylus.util.config.ConfigurationException;
  61 import net.pterodactylus.util.logging.Logging;
  62 import net.pterodactylus.util.number.Numbers;
  63 import net.pterodactylus.util.service.AbstractService;
  64 import net.pterodactylus.util.thread.NamedThreadFactory;
  65 import net.pterodactylus.util.thread.Ticker;
  66 import net.pterodactylus.util.validation.EqualityValidator;
  67 import net.pterodactylus.util.validation.IntegerRangeValidator;
  68 import net.pterodactylus.util.validation.OrValidator;
  69 import net.pterodactylus.util.validation.Validation;
  70 import net.pterodactylus.util.version.Version;
  71 import freenet.keys.FreenetURI;
  72
  73 /**
  74  * The Sone core.
  75  *
  76  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  77  */
  78 public class Core extends AbstractService implements IdentityListener, UpdateListener, SoneProvider, PostProvider, SoneInsertListener, ImageInsertListener {
  79
  80         /** The logger. */
  81         private static final Logger logger = Logging.getLogger(Core.class);
  82
  83         /** The start time. */
  84         private final long startupTime = System.currentTimeMillis();
  85
  86         /** The options. */
  87         private final Options options = new Options();
  88
  89         /** The preferences. */
  90         private final Preferences preferences = new Preferences(options);
  91
  92         /** The core listener manager. */
  93         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
  94
  95         /** The configuration. */
  96         private Configuration configuration;
  97
  98         /** Whether we’re currently saving the configuration. */
  99         private boolean storingConfiguration = false;
 100
 101         /** The database. */
 102         private Database database;
 103
 104         /** The identity manager. */
 105         private final IdentityManager identityManager;
 106
 107         /** Interface to freenet. */
 108         private final FreenetInterface freenetInterface;
 109
 110         /** The Sone downloader. */
 111         private final SoneDownloader soneDownloader;
 112
 113         /** The image inserter. */
 114         private final ImageInserter imageInserter;
 115
 116         /** Sone downloader thread-pool. */
 117         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 118
 119         /** The update checker. */
 120         private final UpdateChecker updateChecker;
 121
 122         /** The trust updater. */
 123         private final WebOfTrustUpdater webOfTrustUpdater;
 124
 125         /** The FCP interface. */
 126         private volatile FcpInterface fcpInterface;
 127
 128         /** The times Sones were followed. */
 129         private final Map<Sone, Long> soneFollowingTimes = new HashMap<Sone, Long>();
 130
 131         /** Locked local Sones. */
 132         /* synchronize on itself. */
 133         private final Set<Sone> lockedSones = new HashSet<Sone>();
 134
 135         /** Sone inserters. */
 136         /* synchronize access on this on localSones. */
 137         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 138
 139         /** Sone rescuers. */
 140         /* synchronize access on this on localSones. */
 141         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 142
 143         /** All known Sones. */
 144         private final Set<String> knownSones = new HashSet<String>();
 145
 146         /** All posts. */
 147         private final Map<String, Post> posts = new HashMap<String, Post>();
 148
 149         /** All known posts. */
 150         private final Set<String> knownPosts = new HashSet<String>();
 151
 152         /** All replies. */
 153         private final Map<String, PostReply> replies = new HashMap<String, PostReply>();
 154
 155         /** All known replies. */
 156         private final Set<String> knownReplies = new HashSet<String>();
 157
 158         /** All bookmarked posts. */
 159         /* synchronize access on itself. */
 160         private final Set<String> bookmarkedPosts = new HashSet<String>();
 161
 162         /** Trusted identities, sorted by own identities. */
 163         private final Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 164
 165         /** All known albums. */
 166         private final Map<String, Album> albums = new HashMap<String, Album>();
 167
 168         /** All known images. */
 169         private final Map<String, Image> images = new HashMap<String, Image>();
 170
 171         /** All temporary images. */
 172         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 173
 174         /** Ticker for threads that mark own elements as known. */
 175         private final Ticker localElementTicker = new Ticker();
 176
 177         /** The time the configuration was last touched. */
 178         private volatile long lastConfigurationUpdate;
 179
 180         /**
 181          * Creates a new core.
 182          *
 183          * @param configuration
 184          *            The configuration of the core
 185          * @param database
 186          *            The database to use
 187          * @param freenetInterface
 188          *            The freenet interface
 189          * @param identityManager
 190          *            The identity manager
 191          * @param webOfTrustUpdater
 192          *            The WebOfTrust updater
 193          */
 194         public Core(Configuration configuration, Database database, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater) {
 195                 super("Sone Core");
 196                 this.configuration = configuration;
 197                 this.database = database;
 198                 this.freenetInterface = freenetInterface;
 199                 this.identityManager = identityManager;
 200                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 201                 this.imageInserter = new ImageInserter(this, freenetInterface);
 202                 this.updateChecker = new UpdateChecker(freenetInterface);
 203                 this.webOfTrustUpdater = webOfTrustUpdater;
 204         }
 205
 206         //
 207         // LISTENER MANAGEMENT
 208         //
 209
 210         /**
 211          * Adds a new core listener.
 212          *
 213          * @param coreListener
 214          *            The listener to add
 215          */
 216         public void addCoreListener(CoreListener coreListener) {
 217                 coreListenerManager.addListener(coreListener);
 218         }
 219
 220         /**
 221          * Removes a core listener.
 222          *
 223          * @param coreListener
 224          *            The listener to remove
 225          */
 226         public void removeCoreListener(CoreListener coreListener) {
 227                 coreListenerManager.removeListener(coreListener);
 228         }
 229
 230         //
 231         // ACCESSORS
 232         //
 233
 234         /**
 235          * Returns the time Sone was started.
 236          *
 237          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 238          */
 239         public long getStartupTime() {
 240                 return startupTime;
 241         }
 242
 243         /**
 244          * Sets the configuration to use. This will automatically save the current
 245          * configuration to the given configuration.
 246          *
 247          * @param configuration
 248          *            The new configuration to use
 249          */
 250         public void setConfiguration(Configuration configuration) {
 251                 this.configuration = configuration;
 252                 touchConfiguration();
 253         }
 254
 255         /**
 256          * Returns the options used by the core.
 257          *
 258          * @return The options of the core
 259          */
 260         public Preferences getPreferences() {
 261                 return preferences;
 262         }
 263
 264         /**
 265          * Returns the identity manager used by the core.
 266          *
 267          * @return The identity manager
 268          */
 269         public IdentityManager getIdentityManager() {
 270                 return identityManager;
 271         }
 272
 273         /**
 274          * Returns the update checker.
 275          *
 276          * @return The update checker
 277          */
 278         public UpdateChecker getUpdateChecker() {
 279                 return updateChecker;
 280         }
 281
 282         /**
 283          * Sets the FCP interface to use.
 284          *
 285          * @param fcpInterface
 286          *            The FCP interface to use
 287          */
 288         public void setFcpInterface(FcpInterface fcpInterface) {
 289                 this.fcpInterface = fcpInterface;
 290         }
 291
 292         /**
 293          * Returns the Sone rescuer for the given local Sone.
 294          *
 295          * @param sone
 296          *            The local Sone to get the rescuer for
 297          * @return The Sone rescuer for the given Sone
 298          */
 299         public SoneRescuer getSoneRescuer(Sone sone) {
 300                 Validation.begin().isNotNull("Sone", sone).check().is("Local Sone", sone.isLocal()).check();
 301                 synchronized (soneRescuers) {
 302                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 303                         if (soneRescuer == null) {
 304                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 305                                 soneRescuers.put(sone, soneRescuer);
 306                                 soneRescuer.start();
 307                         }
 308                         return soneRescuer;
 309                 }
 310         }
 311
 312         /**
 313          * Returns whether the given Sone is currently locked.
 314          *
 315          * @param sone
 316          *            The sone to check
 317          * @return {@code true} if the Sone is locked, {@code false} if it is not
 318          */
 319         public boolean isLocked(Sone sone) {
 320                 synchronized (lockedSones) {
 321                         return lockedSones.contains(sone);
 322                 }
 323         }
 324
 325         /**
 326          * Returns all Sones, remote and local.
 327          *
 328          * @return All Sones
 329          */
 330         public Collection<Sone> getSones() {
 331                 return database.getSones();
 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          * @return The Sone with the given ID, or {@code null} if there is no such
 341          *         Sone
 342          */
 343         public Sone getSone(String id) {
 344                 return getSone(id, true);
 345         }
 346
 347         /**
 348          * Returns the Sone with the given ID, regardless whether it’s local or
 349          * remote.
 350          *
 351          * @param id
 352          *            The ID of the Sone to get
 353          * @param create
 354          *            {@code true} to create a new Sone if none exists,
 355          *            {@code false} to return {@code null} if a Sone with the given
 356          *            ID does not exist
 357          * @return The Sone with the given ID, or {@code null} if there is no such
 358          *         Sone
 359          */
 360         @Override
 361         public Sone getSone(String id, boolean create) {
 362                 return database.getSone(id, create);
 363         }
 364
 365         /**
 366          * Checks whether the core knows a Sone with the given ID.
 367          *
 368          * @param id
 369          *            The ID of the Sone
 370          * @return {@code true} if there is a Sone with the given ID, {@code false}
 371          *         otherwise
 372          */
 373         public boolean hasSone(String id) {
 374                 return database.getSone(id, false) != null;
 375         }
 376
 377         /**
 378          * Returns all local Sones.
 379          *
 380          * @return All local Sones
 381          */
 382         public Collection<Sone> getLocalSones() {
 383                 return database.getLocalSones();
 384         }
 385
 386         /**
 387          * Returns the local Sone with the given ID.
 388          *
 389          * @param id
 390          *            The ID of the Sone to get
 391          * @return The Sone with the given ID
 392          */
 393         public Sone getLocalSone(String id) {
 394                 return getLocalSone(id, true);
 395         }
 396
 397         /**
 398          * Returns the local Sone with the given ID, optionally creating a new Sone.
 399          *
 400          * @param id
 401          *            The ID of the Sone
 402          * @param create
 403          *            {@code true} to create a new Sone if none exists,
 404          *            {@code false} to return null if none exists
 405          * @return The Sone with the given ID, or {@code null}
 406          */
 407         public Sone getLocalSone(String id, boolean create) {
 408                 return database.getLocalSone(id, create);
 409         }
 410
 411         /**
 412          * Returns all remote Sones.
 413          *
 414          * @return All remote Sones
 415          */
 416         public Collection<Sone> getRemoteSones() {
 417                 return database.getRemoteSones();
 418         }
 419
 420         /**
 421          * Returns the remote Sone with the given ID.
 422          *
 423          * @param id
 424          *            The ID of the remote Sone to get
 425          * @param create
 426          *            {@code true} to always create a Sone, {@code false} to return
 427          *            {@code null} if no Sone with the given ID exists
 428          * @return The Sone with the given ID
 429          */
 430         public Sone getRemoteSone(String id, boolean create) {
 431                 return database.getRemoteSone(id, create);
 432         }
 433
 434         /**
 435          * Returns whether the given Sone has been modified.
 436          *
 437          * @param sone
 438          *            The Sone to check for modifications
 439          * @return {@code true} if a modification has been detected in the Sone,
 440          *         {@code false} otherwise
 441          */
 442         public boolean isModifiedSone(Sone sone) {
 443                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 444         }
 445
 446         /**
 447          * Returns the time when the given was first followed by any local Sone.
 448          *
 449          * @param sone
 450          *            The Sone to get the time for
 451          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 452          *         been followed, or {@link Long#MAX_VALUE}
 453          */
 454         public long getSoneFollowingTime(Sone sone) {
 455                 synchronized (soneFollowingTimes) {
 456                         if (soneFollowingTimes.containsKey(sone)) {
 457                                 return soneFollowingTimes.get(sone);
 458                         }
 459                         return Long.MAX_VALUE;
 460                 }
 461         }
 462
 463         /**
 464          * Returns whether the target Sone is trusted by the origin Sone.
 465          *
 466          * @param origin
 467          *            The origin Sone
 468          * @param target
 469          *            The target Sone
 470          * @return {@code true} if the target Sone is trusted by the origin Sone
 471          */
 472         public boolean isSoneTrusted(Sone origin, Sone target) {
 473                 Validation.begin().isNotNull("Origin", origin).isNotNull("Target", target).check().isInstanceOf("Origin’s OwnIdentity", origin.getIdentity(), OwnIdentity.class).check();
 474                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 475         }
 476
 477         /**
 478          * Returns the post with the given ID, optionally creating a new post.
 479          *
 480          * @param postId
 481          *            The ID of the post to get
 482          * @param create
 483          *            {@code true} it create a new post if no post with the given ID
 484          *            exists, {@code false} to return {@code null}
 485          * @return The post, or {@code null} if there is no such post
 486          */
 487         @Override
 488         public Post getPost(String postId, boolean create) {
 489                 synchronized (posts) {
 490                         Post post = posts.get(postId);
 491                         if ((post == null) && create) {
 492                                 post = new PostImpl(postId);
 493                                 posts.put(postId, post);
 494                         }
 495                         return post;
 496                 }
 497         }
 498
 499         /**
 500          * Returns all posts that have the given Sone as recipient.
 501          *
 502          * @see Post#getRecipient()
 503          * @param recipient
 504          *            The recipient of the posts
 505          * @return All posts that have the given Sone as recipient
 506          */
 507         public Set<Post> getDirectedPosts(Sone recipient) {
 508                 Validation.begin().isNotNull("Recipient", recipient).check();
 509                 Set<Post> directedPosts = new HashSet<Post>();
 510                 synchronized (posts) {
 511                         for (Post post : posts.values()) {
 512                                 if (recipient.equals(post.getRecipient())) {
 513                                         directedPosts.add(post);
 514                                 }
 515                         }
 516                 }
 517                 return directedPosts;
 518         }
 519
 520         /**
 521          * Returns the reply with the given ID. If there is no reply with the given
 522          * ID yet, a new one is created.
 523          *
 524          * @param replyId
 525          *            The ID of the reply to get
 526          * @return The reply
 527          */
 528         public PostReply getReply(String replyId) {
 529                 return getReply(replyId, true);
 530         }
 531
 532         /**
 533          * Returns the reply with the given ID. If there is no reply with the given
 534          * ID yet, a new one is created, unless {@code create} is false in which
 535          * case {@code null} is returned.
 536          *
 537          * @param replyId
 538          *            The ID of the reply to get
 539          * @param create
 540          *            {@code true} to always return a {@link Reply}, {@code false}
 541          *            to return {@code null} if no reply can be found
 542          * @return The reply, or {@code null} if there is no such reply
 543          */
 544         public PostReply getReply(String replyId, boolean create) {
 545                 synchronized (replies) {
 546                         PostReply reply = replies.get(replyId);
 547                         if (create && (reply == null)) {
 548                                 reply = new PostReply(replyId);
 549                                 replies.put(replyId, reply);
 550                         }
 551                         return reply;
 552                 }
 553         }
 554
 555         /**
 556          * Returns all replies for the given post, order ascending by time.
 557          *
 558          * @param post
 559          *            The post to get all replies for
 560          * @return All replies for the given post
 561          */
 562         public List<PostReply> getReplies(Post post) {
 563                 Collection<Sone> sones = getSones();
 564                 List<PostReply> replies = new ArrayList<PostReply>();
 565                 for (Sone sone : sones) {
 566                         for (PostReply reply : sone.getReplies()) {
 567                                 if (reply.getPost().equals(post)) {
 568                                         replies.add(reply);
 569                                 }
 570                         }
 571                 }
 572                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 573                 return replies;
 574         }
 575
 576         /**
 577          * Returns all Sones that have liked the given post.
 578          *
 579          * @param post
 580          *            The post to get the liking Sones for
 581          * @return The Sones that like the given post
 582          */
 583         public Set<Sone> getLikes(Post post) {
 584                 Set<Sone> sones = new HashSet<Sone>();
 585                 for (Sone sone : getSones()) {
 586                         if (sone.getLikedPostIds().contains(post.getId())) {
 587                                 sones.add(sone);
 588                         }
 589                 }
 590                 return sones;
 591         }
 592
 593         /**
 594          * Returns all Sones that have liked the given reply.
 595          *
 596          * @param reply
 597          *            The reply to get the liking Sones for
 598          * @return The Sones that like the given reply
 599          */
 600         public Set<Sone> getLikes(PostReply reply) {
 601                 Set<Sone> sones = new HashSet<Sone>();
 602                 for (Sone sone : getSones()) {
 603                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 604                                 sones.add(sone);
 605                         }
 606                 }
 607                 return sones;
 608         }
 609
 610         /**
 611          * Returns whether the given post is bookmarked.
 612          *
 613          * @param post
 614          *            The post to check
 615          * @return {@code true} if the given post is bookmarked, {@code false}
 616          *         otherwise
 617          */
 618         public boolean isBookmarked(Post post) {
 619                 return isPostBookmarked(post.getId());
 620         }
 621
 622         /**
 623          * Returns whether the post with the given ID is bookmarked.
 624          *
 625          * @param id
 626          *            The ID of the post to check
 627          * @return {@code true} if the post with the given ID is bookmarked,
 628          *         {@code false} otherwise
 629          */
 630         public boolean isPostBookmarked(String id) {
 631                 synchronized (bookmarkedPosts) {
 632                         return bookmarkedPosts.contains(id);
 633                 }
 634         }
 635
 636         /**
 637          * Returns all currently known bookmarked posts.
 638          *
 639          * @return All bookmarked posts
 640          */
 641         public Set<Post> getBookmarkedPosts() {
 642                 Set<Post> posts = new HashSet<Post>();
 643                 synchronized (bookmarkedPosts) {
 644                         for (String bookmarkedPostId : bookmarkedPosts) {
 645                                 Post post = getPost(bookmarkedPostId, false);
 646                                 if (post != null) {
 647                                         posts.add(post);
 648                                 }
 649                         }
 650                 }
 651                 return posts;
 652         }
 653
 654         /**
 655          * Returns the album with the given ID, creating a new album if no album
 656          * with the given ID can be found.
 657          *
 658          * @param albumId
 659          *            The ID of the album
 660          * @return The album with the given ID
 661          */
 662         public Album getAlbum(String albumId) {
 663                 return getAlbum(albumId, true);
 664         }
 665
 666         /**
 667          * Returns the album with the given ID, optionally creating a new album if
 668          * an album with the given ID can not be found.
 669          *
 670          * @param albumId
 671          *            The ID of the album
 672          * @param create
 673          *            {@code true} to create a new album if none exists for the
 674          *            given ID
 675          * @return The album with the given ID, or {@code null} if no album with the
 676          *         given ID exists and {@code create} is {@code false}
 677          */
 678         public Album getAlbum(String albumId, boolean create) {
 679                 synchronized (albums) {
 680                         Album album = albums.get(albumId);
 681                         if (create && (album == null)) {
 682                                 album = new Album(albumId);
 683                                 albums.put(albumId, album);
 684                         }
 685                         return album;
 686                 }
 687         }
 688
 689         /**
 690          * Returns the image with the given ID, creating it if necessary.
 691          *
 692          * @param imageId
 693          *            The ID of the image
 694          * @return The image with the given ID
 695          */
 696         public Image getImage(String imageId) {
 697                 return getImage(imageId, true);
 698         }
 699
 700         /**
 701          * Returns the image with the given ID, optionally creating it if it does
 702          * not exist.
 703          *
 704          * @param imageId
 705          *            The ID of the image
 706          * @param create
 707          *            {@code true} to create an image if none exists with the given
 708          *            ID
 709          * @return The image with the given ID, or {@code null} if none exists and
 710          *         none was created
 711          */
 712         public Image getImage(String imageId, boolean create) {
 713                 synchronized (images) {
 714                         Image image = images.get(imageId);
 715                         if (create && (image == null)) {
 716                                 image = new Image(imageId);
 717                                 images.put(imageId, image);
 718                         }
 719                         return image;
 720                 }
 721         }
 722
 723         /**
 724          * Returns the temporary image with the given ID.
 725          *
 726          * @param imageId
 727          *            The ID of the temporary image
 728          * @return The temporary image, or {@code null} if there is no temporary
 729          *         image with the given ID
 730          */
 731         public TemporaryImage getTemporaryImage(String imageId) {
 732                 synchronized (temporaryImages) {
 733                         return temporaryImages.get(imageId);
 734                 }
 735         }
 736
 737         //
 738         // ACTIONS
 739         //
 740
 741         /**
 742          * Locks the given Sone. A locked Sone will not be inserted by
 743          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 744          * again.
 745          *
 746          * @param sone
 747          *            The sone to lock
 748          */
 749         public void lockSone(Sone sone) {
 750                 synchronized (lockedSones) {
 751                         if (lockedSones.add(sone)) {
 752                                 coreListenerManager.fireSoneLocked(sone);
 753                         }
 754                 }
 755         }
 756
 757         /**
 758          * Unlocks the given Sone.
 759          *
 760          * @see #lockSone(Sone)
 761          * @param sone
 762          *            The sone to unlock
 763          */
 764         public void unlockSone(Sone sone) {
 765                 synchronized (lockedSones) {
 766                         if (lockedSones.remove(sone)) {
 767                                 coreListenerManager.fireSoneUnlocked(sone);
 768                         }
 769                 }
 770         }
 771
 772         /**
 773          * Adds a local Sone from the given own identity.
 774          *
 775          * @param ownIdentity
 776          *            The own identity to create a Sone from
 777          * @return The added (or already existing) Sone
 778          */
 779         public Sone addLocalSone(OwnIdentity ownIdentity) {
 780                 if (ownIdentity == null) {
 781                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 782                         return null;
 783                 }
 784                 Sone sone;
 785                 try {
 786                         sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 787                 } catch (MalformedURLException mue1) {
 788                         logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 789                         return null;
 790                 }
 791                 sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 792                 sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 793                 sone.setKnown(true);
 794                 /* TODO - load posts ’n stuff */
 795                 final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 796                 soneInserter.addSoneInsertListener(this);
 797                 soneInserters.put(sone, soneInserter);
 798                 sone.setStatus(SoneStatus.idle);
 799                 loadSone(sone);
 800                 soneInserter.start();
 801                 database.saveSone(sone);
 802                 return sone;
 803         }
 804
 805         /**
 806          * Creates a new Sone for the given own identity.
 807          *
 808          * @param ownIdentity
 809          *            The own identity to create a Sone for
 810          * @return The created Sone
 811          */
 812         public Sone createSone(OwnIdentity ownIdentity) {
 813                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 814                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 815                         return null;
 816                 }
 817                 Sone sone = addLocalSone(ownIdentity);
 818                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 819                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 820                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 821                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 822                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 823                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 824
 825                 followSone(sone, getSone("nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI"));
 826                 touchConfiguration();
 827                 return sone;
 828         }
 829
 830         /**
 831          * Adds the Sone of the given identity.
 832          *
 833          * @param identity
 834          *            The identity whose Sone to add
 835          * @return The added or already existing Sone
 836          */
 837         public Sone addRemoteSone(Identity identity) {
 838                 if (identity == null) {
 839                         logger.log(Level.WARNING, "Given Identity is null!");
 840                         return null;
 841                 }
 842                 final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
 843                 boolean newSone = sone.getRequestUri() == null;
 844                 sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 845                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 846                 if (newSone) {
 847                         synchronized (knownSones) {
 848                                 newSone = !knownSones.contains(sone.getId());
 849                         }
 850                         sone.setKnown(!newSone);
 851                         if (newSone) {
 852                                 coreListenerManager.fireNewSoneFound(sone);
 853                                 for (Sone localSone : getLocalSones()) {
 854                                         if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 855                                                 followSone(localSone, sone);
 856                                         }
 857                                 }
 858                         }
 859                 }
 860                 soneDownloader.addSone(sone);
 861                 soneDownloaders.execute(new Runnable() {
 862
 863                         @Override
 864                         @SuppressWarnings("synthetic-access")
 865                         public void run() {
 866                                 soneDownloader.fetchSone(sone, sone.getRequestUri());
 867                         }
 868
 869                 });
 870                 database.saveSone(sone);
 871                 return sone;
 872         }
 873
 874         /**
 875          * Lets the given local Sone follow the Sone with the given ID.
 876          *
 877          * @param sone
 878          *            The local Sone that should follow another Sone
 879          * @param soneId
 880          *            The ID of the Sone to follow
 881          */
 882         public void followSone(Sone sone, String soneId) {
 883                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
 884                 Sone followedSone = getSone(soneId, true);
 885                 if (followedSone == null) {
 886                         logger.log(Level.INFO, String.format("Ignored Sone with invalid ID: %s", soneId));
 887                         return;
 888                 }
 889                 followSone(sone, getSone(soneId));
 890         }
 891
 892         /**
 893          * Lets the given local Sone follow the other given Sone. If the given Sone
 894          * was not followed by any local Sone before, this will mark all elements of
 895          * the followed Sone as read that have been created before the current
 896          * moment.
 897          *
 898          * @param sone
 899          *            The local Sone that should follow the other Sone
 900          * @param followedSone
 901          *            The Sone that should be followed
 902          */
 903         public void followSone(Sone sone, Sone followedSone) {
 904                 Validation.begin().isNotNull("Sone", sone).isNotNull("Followed Sone", followedSone).check();
 905                 sone.addFriend(followedSone.getId());
 906                 synchronized (soneFollowingTimes) {
 907                         if (!soneFollowingTimes.containsKey(followedSone)) {
 908                                 long now = System.currentTimeMillis();
 909                                 soneFollowingTimes.put(followedSone, now);
 910                                 for (Post post : followedSone.getPosts()) {
 911                                         if (post.getTime() < now) {
 912                                                 markPostKnown(post);
 913                                         }
 914                                 }
 915                                 for (PostReply reply : followedSone.getReplies()) {
 916                                         if (reply.getTime() < now) {
 917                                                 markReplyKnown(reply);
 918                                         }
 919                                 }
 920                         }
 921                 }
 922                 touchConfiguration();
 923         }
 924
 925         /**
 926          * Lets the given local Sone unfollow the Sone with the given ID.
 927          *
 928          * @param sone
 929          *            The local Sone that should unfollow another Sone
 930          * @param soneId
 931          *            The ID of the Sone being unfollowed
 932          */
 933         public void unfollowSone(Sone sone, String soneId) {
 934                 Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
 935                 unfollowSone(sone, getSone(soneId, false));
 936         }
 937
 938         /**
 939          * Lets the given local Sone unfollow the other given Sone. If the given
 940          * local Sone is the last local Sone that followed the given Sone, its
 941          * following time will be removed.
 942          *
 943          * @param sone
 944          *            The local Sone that should unfollow another Sone
 945          * @param unfollowedSone
 946          *            The Sone being unfollowed
 947          */
 948         public void unfollowSone(Sone sone, Sone unfollowedSone) {
 949                 Validation.begin().isNotNull("Sone", sone).isNotNull("Unfollowed Sone", unfollowedSone).check();
 950                 sone.removeFriend(unfollowedSone.getId());
 951                 boolean unfollowedSoneStillFollowed = false;
 952                 for (Sone localSone : getLocalSones()) {
 953                         unfollowedSoneStillFollowed |= localSone.hasFriend(unfollowedSone.getId());
 954                 }
 955                 if (!unfollowedSoneStillFollowed) {
 956                         synchronized (soneFollowingTimes) {
 957                                 soneFollowingTimes.remove(unfollowedSone);
 958                         }
 959                 }
 960                 touchConfiguration();
 961         }
 962
 963         /**
 964          * Sets the trust value of the given origin Sone for
 965          * the target Sone.
 966          *
 967          * @param origin
 968          *            The origin Sone
 969          * @param target
 970          *            The target Sone
 971          * @param trustValue
 972          *            The trust value (from {@code -100} to {@code 100})
 973          */
 974         public void setTrust(Sone origin, Sone target, int trustValue) {
 975                 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();
 976                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 977         }
 978
 979         /**
 980          * Removes any trust assignment for the given target Sone.
 981          *
 982          * @param origin
 983          *            The trust origin
 984          * @param target
 985          *            The trust target
 986          */
 987         public void removeTrust(Sone origin, Sone target) {
 988                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
 989                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 990         }
 991
 992         /**
 993          * Assigns the configured positive trust value for the given target.
 994          *
 995          * @param origin
 996          *            The trust origin
 997          * @param target
 998          *            The trust target
 999          */
1000         public void trustSone(Sone origin, Sone target) {
1001                 setTrust(origin, target, preferences.getPositiveTrust());
1002         }
1003
1004         /**
1005          * Assigns the configured negative trust value for the given target.
1006          *
1007          * @param origin
1008          *            The trust origin
1009          * @param target
1010          *            The trust target
1011          */
1012         public void distrustSone(Sone origin, Sone target) {
1013                 setTrust(origin, target, preferences.getNegativeTrust());
1014         }
1015
1016         /**
1017          * Removes the trust assignment for the given target.
1018          *
1019          * @param origin
1020          *            The trust origin
1021          * @param target
1022          *            The trust target
1023          */
1024         public void untrustSone(Sone origin, Sone target) {
1025                 removeTrust(origin, target);
1026         }
1027
1028         /**
1029          * Updates the stored Sone with the given Sone.
1030          *
1031          * @param sone
1032          *            The updated Sone
1033          */
1034         public void updateSone(Sone sone) {
1035                 updateSone(sone, false);
1036         }
1037
1038         /**
1039          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
1040          * {@code true}, an older Sone than the current Sone can be given to restore
1041          * an old state.
1042          *
1043          * @param sone
1044          *            The Sone to update
1045          * @param soneRescueMode
1046          *            {@code true} if the stored Sone should be updated regardless
1047          *            of the age of the given Sone
1048          */
1049         public void updateSone(Sone sone, boolean soneRescueMode) {
1050                 if (hasSone(sone.getId())) {
1051                         Sone storedSone = getSone(sone.getId());
1052                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1053                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
1054                                 return;
1055                         }
1056                         synchronized (posts) {
1057                                 if (!soneRescueMode) {
1058                                         for (Post post : storedSone.getPosts()) {
1059                                                 posts.remove(post.getId());
1060                                                 if (!sone.getPosts().contains(post)) {
1061                                                         coreListenerManager.firePostRemoved(post);
1062                                                 }
1063                                         }
1064                                 }
1065                                 List<Post> storedPosts = storedSone.getPosts();
1066                                 synchronized (knownPosts) {
1067                                         for (Post post : sone.getPosts()) {
1068                                                 post.setSone(storedSone).setKnown(knownPosts.contains(post.getId()));
1069                                                 if (!storedPosts.contains(post)) {
1070                                                         if (post.getTime() < getSoneFollowingTime(sone)) {
1071                                                                 knownPosts.add(post.getId());
1072                                                                 post.setKnown(true);
1073                                                         } else if (!knownPosts.contains(post.getId())) {
1074                                                                 coreListenerManager.fireNewPostFound(post);
1075                                                         }
1076                                                 }
1077                                                 posts.put(post.getId(), post);
1078                                         }
1079                                 }
1080                         }
1081                         synchronized (replies) {
1082                                 if (!soneRescueMode) {
1083                                         for (PostReply reply : storedSone.getReplies()) {
1084                                                 replies.remove(reply.getId());
1085                                                 if (!sone.getReplies().contains(reply)) {
1086                                                         coreListenerManager.fireReplyRemoved(reply);
1087                                                 }
1088                                         }
1089                                 }
1090                                 Set<PostReply> storedReplies = storedSone.getReplies();
1091                                 synchronized (knownReplies) {
1092                                         for (PostReply reply : sone.getReplies()) {
1093                                                 reply.setSone(storedSone).setKnown(knownReplies.contains(reply.getId()));
1094                                                 if (!storedReplies.contains(reply)) {
1095                                                         if (reply.getTime() < getSoneFollowingTime(sone)) {
1096                                                                 knownReplies.add(reply.getId());
1097                                                                 reply.setKnown(true);
1098                                                         } else if (!knownReplies.contains(reply.getId())) {
1099                                                                 coreListenerManager.fireNewReplyFound(reply);
1100                                                         }
1101                                                 }
1102                                                 replies.put(reply.getId(), reply);
1103                                         }
1104                                 }
1105                         }
1106                         synchronized (albums) {
1107                                 synchronized (images) {
1108                                         for (Album album : storedSone.getAlbums()) {
1109                                                 albums.remove(album.getId());
1110                                                 for (Image image : album.getImages()) {
1111                                                         images.remove(image.getId());
1112                                                 }
1113                                         }
1114                                         for (Album album : sone.getAlbums()) {
1115                                                 albums.put(album.getId(), album);
1116                                                 for (Image image : album.getImages()) {
1117                                                         images.put(image.getId(), image);
1118                                                 }
1119                                         }
1120                                 }
1121                         }
1122                         synchronized (storedSone) {
1123                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1124                                         storedSone.setTime(sone.getTime());
1125                                 }
1126                                 storedSone.setClient(sone.getClient());
1127                                 storedSone.setProfile(sone.getProfile());
1128                                 if (soneRescueMode) {
1129                                         for (Post post : sone.getPosts()) {
1130                                                 storedSone.addPost(post);
1131                                         }
1132                                         for (PostReply reply : sone.getReplies()) {
1133                                                 storedSone.addReply(reply);
1134                                         }
1135                                         for (String likedPostId : sone.getLikedPostIds()) {
1136                                                 storedSone.addLikedPostId(likedPostId);
1137                                         }
1138                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1139                                                 storedSone.addLikedReplyId(likedReplyId);
1140                                         }
1141                                         for (Album album : sone.getAlbums()) {
1142                                                 storedSone.addAlbum(album);
1143                                         }
1144                                 } else {
1145                                         storedSone.setPosts(sone.getPosts());
1146                                         storedSone.setReplies(sone.getReplies());
1147                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1148                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1149                                         storedSone.setAlbums(sone.getAlbums());
1150                                 }
1151                                 storedSone.setLatestEdition(sone.getLatestEdition());
1152                         }
1153                 }
1154         }
1155
1156         /**
1157          * Deletes the given Sone. This will remove the Sone from the
1158          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
1159          * and remove the context from its identity.
1160          *
1161          * @param sone
1162          *            The Sone to delete
1163          */
1164         public void deleteSone(Sone sone) {
1165                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1166                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1167                         return;
1168                 }
1169                 if (!sone.isLocal()) {
1170                         logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1171                         return;
1172                 }
1173                 database.removeSone(sone.getId());
1174                 SoneInserter soneInserter = soneInserters.remove(sone);
1175                 soneInserter.removeSoneInsertListener(this);
1176                 soneInserter.stop();
1177                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1178                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1179                 try {
1180                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1181                 } catch (ConfigurationException ce1) {
1182                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1183                 }
1184         }
1185
1186         /**
1187          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1188          * known} before, a {@link CoreListener#markSoneKnown(Sone)} event is fired.
1189          *
1190          * @param sone
1191          *            The Sone to mark as known
1192          */
1193         public void markSoneKnown(Sone sone) {
1194                 if (!sone.isKnown()) {
1195                         sone.setKnown(true);
1196                         synchronized (knownSones) {
1197                                 knownSones.add(sone.getId());
1198                         }
1199                         coreListenerManager.fireMarkSoneKnown(sone);
1200                         touchConfiguration();
1201                 }
1202         }
1203
1204         /**
1205          * Loads and updates the given Sone from the configuration. If any error is
1206          * encountered, loading is aborted and the given Sone is not changed.
1207          *
1208          * @param sone
1209          *            The Sone to load and update
1210          */
1211         public void loadSone(Sone sone) {
1212                 if (!sone.isLocal()) {
1213                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1214                         return;
1215                 }
1216
1217                 /* initialize options. */
1218                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1219                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1220                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1221                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1222                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1223                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1224
1225                 /* load Sone. */
1226                 String sonePrefix = "Sone/" + sone.getId();
1227                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1228                 if (soneTime == null) {
1229                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1230                         return;
1231                 }
1232                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1233
1234                 /* load profile. */
1235                 Profile profile = new Profile(sone);
1236                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1237                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1238                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1239                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1240                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1241                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1242
1243                 /* load profile fields. */
1244                 while (true) {
1245                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1246                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1247                         if (fieldName == null) {
1248                                 break;
1249                         }
1250                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1251                         profile.addField(fieldName).setValue(fieldValue);
1252                 }
1253
1254                 /* load posts. */
1255                 Set<Post> posts = new HashSet<Post>();
1256                 while (true) {
1257                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1258                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1259                         if (postId == null) {
1260                                 break;
1261                         }
1262                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1263                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1264                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1265                         if ((postTime == 0) || (postText == null)) {
1266                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1267                                 return;
1268                         }
1269                         Post post = getPost(postId, true).setSone(sone).setTime(postTime).setText(postText);
1270                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1271                                 post.setRecipient(getSone(postRecipientId));
1272                         }
1273                         posts.add(post);
1274                 }
1275
1276                 /* load replies. */
1277                 Set<PostReply> replies = new HashSet<PostReply>();
1278                 while (true) {
1279                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1280                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1281                         if (replyId == null) {
1282                                 break;
1283                         }
1284                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1285                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1286                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1287                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1288                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1289                                 return;
1290                         }
1291                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId, true)).setTime(replyTime).setText(replyText));
1292                 }
1293
1294                 /* load post likes. */
1295                 Set<String> likedPostIds = new HashSet<String>();
1296                 while (true) {
1297                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1298                         if (likedPostId == null) {
1299                                 break;
1300                         }
1301                         likedPostIds.add(likedPostId);
1302                 }
1303
1304                 /* load reply likes. */
1305                 Set<String> likedReplyIds = new HashSet<String>();
1306                 while (true) {
1307                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1308                         if (likedReplyId == null) {
1309                                 break;
1310                         }
1311                         likedReplyIds.add(likedReplyId);
1312                 }
1313
1314                 /* load friends. */
1315                 Set<String> friends = new HashSet<String>();
1316                 while (true) {
1317                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1318                         if (friendId == null) {
1319                                 break;
1320                         }
1321                         friends.add(friendId);
1322                 }
1323
1324                 /* load albums. */
1325                 List<Album> topLevelAlbums = new ArrayList<Album>();
1326                 int albumCounter = 0;
1327                 while (true) {
1328                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1329                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1330                         if (albumId == null) {
1331                                 break;
1332                         }
1333                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1334                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1335                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1336                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1337                         if ((albumTitle == null) || (albumDescription == null)) {
1338                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1339                                 return;
1340                         }
1341                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1342                         if (albumParentId != null) {
1343                                 Album parentAlbum = getAlbum(albumParentId, false);
1344                                 if (parentAlbum == null) {
1345                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1346                                         return;
1347                                 }
1348                                 parentAlbum.addAlbum(album);
1349                         } else {
1350                                 if (!topLevelAlbums.contains(album)) {
1351                                         topLevelAlbums.add(album);
1352                                 }
1353                         }
1354                 }
1355
1356                 /* load images. */
1357                 int imageCounter = 0;
1358                 while (true) {
1359                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1360                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1361                         if (imageId == null) {
1362                                 break;
1363                         }
1364                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1365                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1366                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1367                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1368                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1369                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1370                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1371                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1372                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1373                                 return;
1374                         }
1375                         Album album = getAlbum(albumId, false);
1376                         if (album == null) {
1377                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1378                                 return;
1379                         }
1380                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1381                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1382                         album.addImage(image);
1383                 }
1384
1385                 /* load avatar. */
1386                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1387                 if (avatarId != null) {
1388                         profile.setAvatar(getImage(avatarId, false));
1389                 }
1390
1391                 /* load options. */
1392                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1393                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1394                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1395                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1396                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1397                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1398
1399                 /* if we’re still here, Sone was loaded successfully. */
1400                 synchronized (sone) {
1401                         sone.setTime(soneTime);
1402                         sone.setProfile(profile);
1403                         sone.setPosts(posts);
1404                         sone.setReplies(replies);
1405                         sone.setLikePostIds(likedPostIds);
1406                         sone.setLikeReplyIds(likedReplyIds);
1407                         for (String friendId : friends) {
1408                                 followSone(sone, friendId);
1409                         }
1410                         sone.setAlbums(topLevelAlbums);
1411                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1412                 }
1413                 synchronized (knownSones) {
1414                         for (String friend : friends) {
1415                                 knownSones.add(friend);
1416                         }
1417                 }
1418                 synchronized (knownPosts) {
1419                         for (Post post : posts) {
1420                                 knownPosts.add(post.getId());
1421                         }
1422                 }
1423                 synchronized (knownReplies) {
1424                         for (PostReply reply : replies) {
1425                                 knownReplies.add(reply.getId());
1426                         }
1427                 }
1428         }
1429
1430         /**
1431          * Creates a new post.
1432          *
1433          * @param sone
1434          *            The Sone that creates the post
1435          * @param recipient
1436          *            The recipient Sone, or {@code null} if this post does not have
1437          *            a recipient
1438          * @param time
1439          *            The time of the post
1440          * @param text
1441          *            The text of the post
1442          * @return The created post
1443          */
1444         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1445                 Validation.begin().isNotNull("Text", text).check().isGreater("Text Length", text.length(), 0).check();
1446                 if (!sone.isLocal()) {
1447                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1448                         return null;
1449                 }
1450                 final Post post = new PostImpl(sone, time, text);
1451                 if (recipient != null) {
1452                         post.setRecipient(recipient);
1453                 }
1454                 synchronized (posts) {
1455                         posts.put(post.getId(), post);
1456                 }
1457                 coreListenerManager.fireNewPostFound(post);
1458                 sone.addPost(post);
1459                 touchConfiguration();
1460                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1461
1462                         /**
1463                          * {@inheritDoc}
1464                          */
1465                         @Override
1466                         public void run() {
1467                                 markPostKnown(post);
1468                         }
1469                 }, "Mark " + post + " read.");
1470                 return post;
1471         }
1472
1473         /**
1474          * Deletes the given post.
1475          *
1476          * @param post
1477          *            The post to delete
1478          */
1479         public void deletePost(Post post) {
1480                 if (!post.getSone().isLocal()) {
1481                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1482                         return;
1483                 }
1484                 post.getSone().removePost(post);
1485                 synchronized (posts) {
1486                         posts.remove(post.getId());
1487                 }
1488                 coreListenerManager.firePostRemoved(post);
1489                 markPostKnown(post);
1490                 touchConfiguration();
1491         }
1492
1493         /**
1494          * Marks the given post as known, if it is currently not a known post
1495          * (according to {@link Post#isKnown()}).
1496          *
1497          * @param post
1498          *            The post to mark as known
1499          */
1500         public void markPostKnown(Post post) {
1501                 post.setKnown(true);
1502                 synchronized (knownPosts) {
1503                         coreListenerManager.fireMarkPostKnown(post);
1504                         if (knownPosts.add(post.getId())) {
1505                                 touchConfiguration();
1506                         }
1507                 }
1508                 for (PostReply reply : getReplies(post)) {
1509                         markReplyKnown(reply);
1510                 }
1511         }
1512
1513         /**
1514          * Bookmarks the given post.
1515          *
1516          * @param post
1517          *            The post to bookmark
1518          */
1519         public void bookmark(Post post) {
1520                 bookmarkPost(post.getId());
1521         }
1522
1523         /**
1524          * Bookmarks the post with the given ID.
1525          *
1526          * @param id
1527          *            The ID of the post to bookmark
1528          */
1529         public void bookmarkPost(String id) {
1530                 synchronized (bookmarkedPosts) {
1531                         bookmarkedPosts.add(id);
1532                 }
1533         }
1534
1535         /**
1536          * Removes the given post from the bookmarks.
1537          *
1538          * @param post
1539          *            The post to unbookmark
1540          */
1541         public void unbookmark(Post post) {
1542                 unbookmarkPost(post.getId());
1543         }
1544
1545         /**
1546          * Removes the post with the given ID from the bookmarks.
1547          *
1548          * @param id
1549          *            The ID of the post to unbookmark
1550          */
1551         public void unbookmarkPost(String id) {
1552                 synchronized (bookmarkedPosts) {
1553                         bookmarkedPosts.remove(id);
1554                 }
1555         }
1556
1557         /**
1558          * Creates a new reply.
1559          *
1560          * @param sone
1561          *            The Sone that creates the reply
1562          * @param post
1563          *            The post that this reply refers to
1564          * @param text
1565          *            The text of the reply
1566          * @return The created reply
1567          */
1568         public PostReply createReply(Sone sone, Post post, String text) {
1569                 return createReply(sone, post, System.currentTimeMillis(), text);
1570         }
1571
1572         /**
1573          * Creates a new reply.
1574          *
1575          * @param sone
1576          *            The Sone that creates the reply
1577          * @param post
1578          *            The post that this reply refers to
1579          * @param time
1580          *            The time of the reply
1581          * @param text
1582          *            The text of the reply
1583          * @return The created reply
1584          */
1585         public PostReply createReply(Sone sone, Post post, long time, String text) {
1586                 Validation.begin().isNotNull("Text", text).check().isGreater("Text Length", text.trim().length(), 0).check();
1587                 if (!sone.isLocal()) {
1588                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1589                         return null;
1590                 }
1591                 final PostReply reply = new PostReply(sone, post, System.currentTimeMillis(), text);
1592                 synchronized (replies) {
1593                         replies.put(reply.getId(), reply);
1594                 }
1595                 synchronized (knownReplies) {
1596                         coreListenerManager.fireNewReplyFound(reply);
1597                 }
1598                 sone.addReply(reply);
1599                 touchConfiguration();
1600                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1601
1602                         /**
1603                          * {@inheritDoc}
1604                          */
1605                         @Override
1606                         public void run() {
1607                                 markReplyKnown(reply);
1608                         }
1609                 }, "Mark " + reply + " read.");
1610                 return reply;
1611         }
1612
1613         /**
1614          * Deletes the given reply.
1615          *
1616          * @param reply
1617          *            The reply to delete
1618          */
1619         public void deleteReply(PostReply reply) {
1620                 Sone sone = reply.getSone();
1621                 if (!sone.isLocal()) {
1622                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1623                         return;
1624                 }
1625                 synchronized (replies) {
1626                         replies.remove(reply.getId());
1627                 }
1628                 synchronized (knownReplies) {
1629                         markReplyKnown(reply);
1630                         knownReplies.remove(reply.getId());
1631                 }
1632                 sone.removeReply(reply);
1633                 touchConfiguration();
1634         }
1635
1636         /**
1637          * Marks the given reply as known, if it is currently not a known reply
1638          * (according to {@link Reply#isKnown()}).
1639          *
1640          * @param reply
1641          *            The reply to mark as known
1642          */
1643         public void markReplyKnown(PostReply reply) {
1644                 reply.setKnown(true);
1645                 synchronized (knownReplies) {
1646                         coreListenerManager.fireMarkReplyKnown(reply);
1647                         if (knownReplies.add(reply.getId())) {
1648                                 touchConfiguration();
1649                         }
1650                 }
1651         }
1652
1653         /**
1654          * Creates a new top-level album for the given Sone.
1655          *
1656          * @param sone
1657          *            The Sone to create the album for
1658          * @return The new album
1659          */
1660         public Album createAlbum(Sone sone) {
1661                 return createAlbum(sone, null);
1662         }
1663
1664         /**
1665          * Creates a new album for the given Sone.
1666          *
1667          * @param sone
1668          *            The Sone to create the album for
1669          * @param parent
1670          *            The parent of the album (may be {@code null} to create a
1671          *            top-level album)
1672          * @return The new album
1673          */
1674         public Album createAlbum(Sone sone, Album parent) {
1675                 Album album = new Album();
1676                 synchronized (albums) {
1677                         albums.put(album.getId(), album);
1678                 }
1679                 album.setSone(sone);
1680                 if (parent != null) {
1681                         parent.addAlbum(album);
1682                 } else {
1683                         sone.addAlbum(album);
1684                 }
1685                 return album;
1686         }
1687
1688         /**
1689          * Deletes the given album. The owner of the album has to be a local Sone,
1690          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1691          *
1692          * @param album
1693          *            The album to remove
1694          */
1695         public void deleteAlbum(Album album) {
1696                 Validation.begin().isNotNull("Album", album).check().is("Local Sone", album.getSone().isLocal()).check();
1697                 if (!album.isEmpty()) {
1698                         return;
1699                 }
1700                 if (album.getParent() == null) {
1701                         album.getSone().removeAlbum(album);
1702                 } else {
1703                         album.getParent().removeAlbum(album);
1704                 }
1705                 synchronized (albums) {
1706                         albums.remove(album.getId());
1707                 }
1708                 touchConfiguration();
1709         }
1710
1711         /**
1712          * Creates a new image.
1713          *
1714          * @param sone
1715          *            The Sone creating the image
1716          * @param album
1717          *            The album the image will be inserted into
1718          * @param temporaryImage
1719          *            The temporary image to create the image from
1720          * @return The newly created image
1721          */
1722         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1723                 Validation.begin().isNotNull("Sone", sone).isNotNull("Album", album).isNotNull("Temporary Image", temporaryImage).check().is("Local Sone", sone.isLocal()).check().isEqual("Owner and Album Owner", sone, album.getSone()).check();
1724                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1725                 album.addImage(image);
1726                 synchronized (images) {
1727                         images.put(image.getId(), image);
1728                 }
1729                 imageInserter.insertImage(temporaryImage, image);
1730                 return image;
1731         }
1732
1733         /**
1734          * Deletes the given image. This method will also delete a matching
1735          * temporary image.
1736          *
1737          * @see #deleteTemporaryImage(TemporaryImage)
1738          * @param image
1739          *            The image to delete
1740          */
1741         public void deleteImage(Image image) {
1742                 Validation.begin().isNotNull("Image", image).check().is("Local Sone", image.getSone().isLocal()).check();
1743                 deleteTemporaryImage(image.getId());
1744                 image.getAlbum().removeImage(image);
1745                 synchronized (images) {
1746                         images.remove(image.getId());
1747                 }
1748                 touchConfiguration();
1749         }
1750
1751         /**
1752          * Creates a new temporary image.
1753          *
1754          * @param mimeType
1755          *            The MIME type of the temporary image
1756          * @param imageData
1757          *            The encoded data of the image
1758          * @return The temporary image
1759          */
1760         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1761                 TemporaryImage temporaryImage = new TemporaryImage();
1762                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1763                 synchronized (temporaryImages) {
1764                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1765                 }
1766                 return temporaryImage;
1767         }
1768
1769         /**
1770          * Deletes the given temporary image.
1771          *
1772          * @param temporaryImage
1773          *            The temporary image to delete
1774          */
1775         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1776                 Validation.begin().isNotNull("Temporary Image", temporaryImage).check();
1777                 deleteTemporaryImage(temporaryImage.getId());
1778         }
1779
1780         /**
1781          * Deletes the temporary image with the given ID.
1782          *
1783          * @param imageId
1784          *            The ID of the temporary image to delete
1785          */
1786         public void deleteTemporaryImage(String imageId) {
1787                 Validation.begin().isNotNull("Temporary Image ID", imageId).check();
1788                 synchronized (temporaryImages) {
1789                         temporaryImages.remove(imageId);
1790                 }
1791                 Image image = getImage(imageId, false);
1792                 if (image != null) {
1793                         imageInserter.cancelImageInsert(image);
1794                 }
1795         }
1796
1797         /**
1798          * Notifies the core that the configuration, either of the core or of a
1799          * single local Sone, has changed, and that the configuration should be
1800          * saved.
1801          */
1802         public void touchConfiguration() {
1803                 lastConfigurationUpdate = System.currentTimeMillis();
1804         }
1805
1806         //
1807         // SERVICE METHODS
1808         //
1809
1810         /**
1811          * Starts the core.
1812          */
1813         @Override
1814         public void serviceStart() {
1815                 loadConfiguration();
1816                 updateChecker.addUpdateListener(this);
1817                 updateChecker.start();
1818                 webOfTrustUpdater.start();
1819         }
1820
1821         /**
1822          * {@inheritDoc}
1823          */
1824         @Override
1825         public void serviceRun() {
1826                 long lastSaved = System.currentTimeMillis();
1827                 while (!shouldStop()) {
1828                         sleep(1000);
1829                         long now = System.currentTimeMillis();
1830                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1831                                 for (Sone localSone : getLocalSones()) {
1832                                         saveSone(localSone);
1833                                 }
1834                                 saveConfiguration();
1835                                 lastSaved = now;
1836                         }
1837                 }
1838         }
1839
1840         /**
1841          * Stops the core.
1842          */
1843         @Override
1844         public void serviceStop() {
1845                 for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1846                         soneInserter.getValue().removeSoneInsertListener(this);
1847                         soneInserter.getValue().stop();
1848                         saveSone(soneInserter.getKey());
1849                 }
1850                 saveConfiguration();
1851                 webOfTrustUpdater.stop();
1852                 updateChecker.stop();
1853                 updateChecker.removeUpdateListener(this);
1854                 soneDownloader.stop();
1855         }
1856
1857         //
1858         // PRIVATE METHODS
1859         //
1860
1861         /**
1862          * Saves the given Sone. This will persist all local settings for the given
1863          * Sone, such as the friends list and similar, private options.
1864          *
1865          * @param sone
1866          *            The Sone to save
1867          */
1868         private synchronized void saveSone(Sone sone) {
1869                 if (!sone.isLocal()) {
1870                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1871                         return;
1872                 }
1873                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1874                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1875                         return;
1876                 }
1877
1878                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1879                 try {
1880                         /* save Sone into configuration. */
1881                         String sonePrefix = "Sone/" + sone.getId();
1882                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1883                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1884
1885                         /* save profile. */
1886                         Profile profile = sone.getProfile();
1887                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1888                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1889                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1890                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1891                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1892                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1893                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1894
1895                         /* save profile fields. */
1896                         int fieldCounter = 0;
1897                         for (Field profileField : profile.getFields()) {
1898                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1899                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1900                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1901                         }
1902                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1903
1904                         /* save posts. */
1905                         int postCounter = 0;
1906                         for (Post post : sone.getPosts()) {
1907                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1908                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1909                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
1910                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1911                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1912                         }
1913                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1914
1915                         /* save replies. */
1916                         int replyCounter = 0;
1917                         for (PostReply reply : sone.getReplies()) {
1918                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1919                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1920                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1921                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1922                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1923                         }
1924                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1925
1926                         /* save post likes. */
1927                         int postLikeCounter = 0;
1928                         for (String postId : sone.getLikedPostIds()) {
1929                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1930                         }
1931                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1932
1933                         /* save reply likes. */
1934                         int replyLikeCounter = 0;
1935                         for (String replyId : sone.getLikedReplyIds()) {
1936                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1937                         }
1938                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1939
1940                         /* save friends. */
1941                         int friendCounter = 0;
1942                         for (String friendId : sone.getFriends()) {
1943                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1944                         }
1945                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1946
1947                         /* save albums. first, collect in a flat structure, top-level first. */
1948                         List<Album> albums = sone.getAllAlbums();
1949
1950                         int albumCounter = 0;
1951                         for (Album album : albums) {
1952                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1953                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1954                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1955                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1956                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
1957                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1958                         }
1959                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1960
1961                         /* save images. */
1962                         int imageCounter = 0;
1963                         for (Album album : albums) {
1964                                 for (Image image : album.getImages()) {
1965                                         if (!image.isInserted()) {
1966                                                 continue;
1967                                         }
1968                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1969                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1970                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1971                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1972                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1973                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1974                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1975                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1976                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1977                                 }
1978                         }
1979                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1980
1981                         /* save options. */
1982                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1983                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1984                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1985                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1986                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1987                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
1988
1989                         configuration.save();
1990
1991                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1992
1993                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1994                 } catch (ConfigurationException ce1) {
1995                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1996                 }
1997         }
1998
1999         /**
2000          * Saves the current options.
2001          */
2002         private void saveConfiguration() {
2003                 synchronized (configuration) {
2004                         if (storingConfiguration) {
2005                                 logger.log(Level.FINE, "Already storing configuration…");
2006                                 return;
2007                         }
2008                         storingConfiguration = true;
2009                 }
2010
2011                 /* store the options first. */
2012                 try {
2013                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
2014                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
2015                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
2016                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
2017                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
2018                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
2019                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
2020                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
2021                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
2022                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
2023                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
2024                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
2025
2026                         /* save known Sones. */
2027                         int soneCounter = 0;
2028                         synchronized (knownSones) {
2029                                 for (String knownSoneId : knownSones) {
2030                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
2031                                 }
2032                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
2033                         }
2034
2035                         /* save Sone following times. */
2036                         soneCounter = 0;
2037                         synchronized (soneFollowingTimes) {
2038                                 for (Entry<Sone, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
2039                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey().getId());
2040                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
2041                                         ++soneCounter;
2042                                 }
2043                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
2044                         }
2045
2046                         /* save known posts. */
2047                         int postCounter = 0;
2048                         synchronized (knownPosts) {
2049                                 for (String knownPostId : knownPosts) {
2050                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
2051                                 }
2052                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
2053                         }
2054
2055                         /* save known replies. */
2056                         int replyCounter = 0;
2057                         synchronized (knownReplies) {
2058                                 for (String knownReplyId : knownReplies) {
2059                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
2060                                 }
2061                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
2062                         }
2063
2064                         /* save bookmarked posts. */
2065                         int bookmarkedPostCounter = 0;
2066                         synchronized (bookmarkedPosts) {
2067                                 for (String bookmarkedPostId : bookmarkedPosts) {
2068                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
2069                                 }
2070                         }
2071                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
2072
2073                         /* now save it. */
2074                         configuration.save();
2075
2076                 } catch (ConfigurationException ce1) {
2077                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
2078                 } finally {
2079                         synchronized (configuration) {
2080                                 storingConfiguration = false;
2081                         }
2082                 }
2083         }
2084
2085         /**
2086          * Loads the configuration.
2087          */
2088         @SuppressWarnings("unchecked")
2089         private void loadConfiguration() {
2090                 /* create options. */
2091                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangeValidator(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2092
2093                         @Override
2094                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2095                                 SoneInserter.setInsertionDelay(newValue);
2096                         }
2097
2098                 }));
2099                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
2100                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
2101                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2102                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
2103                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2104                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangeValidator(0, 100)));
2105                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangeValidator(-100, 100)));
2106                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2107                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2108
2109                         @Override
2110                         @SuppressWarnings("synthetic-access")
2111                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2112                                 fcpInterface.setActive(newValue);
2113                         }
2114                 }));
2115                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2116
2117                         @Override
2118                         @SuppressWarnings("synthetic-access")
2119                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2120                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2121                         }
2122
2123                 }));
2124
2125                 loadConfigurationValue("InsertionDelay");
2126                 loadConfigurationValue("PostsPerPage");
2127                 loadConfigurationValue("ImagesPerPage");
2128                 loadConfigurationValue("CharactersPerPost");
2129                 loadConfigurationValue("PostCutOffLength");
2130                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2131                 loadConfigurationValue("PositiveTrust");
2132                 loadConfigurationValue("NegativeTrust");
2133                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2134                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2135                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").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 (knownSones) {
2145                                 knownSones.add(knownSoneId);
2146                         }
2147                 }
2148
2149                 /* load Sone following times. */
2150                 soneCounter = 0;
2151                 while (true) {
2152                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2153                         if (soneId == null) {
2154                                 break;
2155                         }
2156                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2157                         Sone followedSone = getSone(soneId);
2158                         if (followedSone == null) {
2159                                 logger.log(Level.WARNING, String.format("Ignoring Sone with invalid ID: %s", soneId));
2160                         } else {
2161                                 synchronized (soneFollowingTimes) {
2162                                         soneFollowingTimes.put(getSone(soneId), time);
2163                                 }
2164                         }
2165                         ++soneCounter;
2166                 }
2167
2168                 /* load known posts. */
2169                 int postCounter = 0;
2170                 while (true) {
2171                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
2172                         if (knownPostId == null) {
2173                                 break;
2174                         }
2175                         synchronized (knownPosts) {
2176                                 knownPosts.add(knownPostId);
2177                         }
2178                 }
2179
2180                 /* load known replies. */
2181                 int replyCounter = 0;
2182                 while (true) {
2183                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
2184                         if (knownReplyId == null) {
2185                                 break;
2186                         }
2187                         synchronized (knownReplies) {
2188                                 knownReplies.add(knownReplyId);
2189                         }
2190                 }
2191
2192                 /* load bookmarked posts. */
2193                 int bookmarkedPostCounter = 0;
2194                 while (true) {
2195                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2196                         if (bookmarkedPostId == null) {
2197                                 break;
2198                         }
2199                         synchronized (bookmarkedPosts) {
2200                                 bookmarkedPosts.add(bookmarkedPostId);
2201                         }
2202                 }
2203
2204         }
2205
2206         /**
2207          * Loads an {@link Integer} configuration value for the option with the
2208          * given name, logging validation failures.
2209          *
2210          * @param optionName
2211          *            The name of the option to load
2212          */
2213         private void loadConfigurationValue(String optionName) {
2214                 try {
2215                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2216                 } catch (IllegalArgumentException iae1) {
2217                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2218                 }
2219         }
2220
2221         /**
2222          * Generate a Sone URI from the given URI and latest edition.
2223          *
2224          * @param uriString
2225          *            The URI to derive the Sone URI from
2226          * @return The derived URI
2227          */
2228         private static FreenetURI getSoneUri(String uriString) {
2229                 try {
2230                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
2231                         return uri;
2232                 } catch (MalformedURLException mue1) {
2233                         logger.log(Level.WARNING, String.format("Could not create Sone URI from URI: %s", uriString), mue1);
2234                         return null;
2235                 }
2236         }
2237
2238         //
2239         // INTERFACE IdentityListener
2240         //
2241
2242         /**
2243          * {@inheritDoc}
2244          */
2245         @Override
2246         public void ownIdentityAdded(OwnIdentity ownIdentity) {
2247                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2248                 if (ownIdentity.hasContext("Sone")) {
2249                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2250                         addLocalSone(ownIdentity);
2251                 }
2252         }
2253
2254         /**
2255          * {@inheritDoc}
2256          */
2257         @Override
2258         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
2259                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2260                 trustedIdentities.remove(ownIdentity);
2261         }
2262
2263         /**
2264          * {@inheritDoc}
2265          */
2266         @Override
2267         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
2268                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2269                 trustedIdentities.get(ownIdentity).add(identity);
2270                 addRemoteSone(identity);
2271         }
2272
2273         /**
2274          * {@inheritDoc}
2275          */
2276         @Override
2277         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
2278                 soneDownloaders.execute(new Runnable() {
2279
2280                         @Override
2281                         @SuppressWarnings("synthetic-access")
2282                         public void run() {
2283                                 Sone sone = getRemoteSone(identity.getId(), false);
2284                                 sone.setIdentity(identity);
2285                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2286                                 soneDownloader.addSone(sone);
2287                                 soneDownloader.fetchSone(sone);
2288                         }
2289                 });
2290         }
2291
2292         /**
2293          * {@inheritDoc}
2294          */
2295         @Override
2296         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
2297                 trustedIdentities.get(ownIdentity).remove(identity);
2298                 boolean foundIdentity = false;
2299                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2300                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2301                                 continue;
2302                         }
2303                         if (trustedIdentity.getValue().contains(identity)) {
2304                                 foundIdentity = true;
2305                         }
2306                 }
2307                 if (foundIdentity) {
2308                         /* some local identity still trusts this identity, don’t remove. */
2309                         return;
2310                 }
2311                 Sone sone = getSone(identity.getId(), false);
2312                 if (sone == null) {
2313                         /* TODO - we don’t have the Sone anymore. should this happen? */
2314                         return;
2315                 }
2316                 synchronized (posts) {
2317                         synchronized (knownPosts) {
2318                                 for (Post post : sone.getPosts()) {
2319                                         posts.remove(post.getId());
2320                                         coreListenerManager.firePostRemoved(post);
2321                                 }
2322                         }
2323                 }
2324                 synchronized (replies) {
2325                         synchronized (knownReplies) {
2326                                 for (PostReply reply : sone.getReplies()) {
2327                                         replies.remove(reply.getId());
2328                                         coreListenerManager.fireReplyRemoved(reply);
2329                                 }
2330                         }
2331                 }
2332                 database.removeSone(identity.getId());
2333                 coreListenerManager.fireSoneRemoved(sone);
2334         }
2335
2336         //
2337         // INTERFACE UpdateListener
2338         //
2339
2340         /**
2341          * {@inheritDoc}
2342          */
2343         @Override
2344         public void updateFound(Version version, long releaseTime, long latestEdition) {
2345                 coreListenerManager.fireUpdateFound(version, releaseTime, latestEdition);
2346         }
2347
2348         //
2349         // INTERFACE ImageInsertListener
2350         //
2351
2352         /**
2353          * {@inheritDoc}
2354          */
2355         @Override
2356         public void insertStarted(Sone sone) {
2357                 coreListenerManager.fireSoneInserting(sone);
2358         }
2359
2360         /**
2361          * {@inheritDoc}
2362          */
2363         @Override
2364         public void insertFinished(Sone sone, long insertDuration) {
2365                 coreListenerManager.fireSoneInserted(sone, insertDuration);
2366         }
2367
2368         /**
2369          * {@inheritDoc}
2370          */
2371         @Override
2372         public void insertAborted(Sone sone, Throwable cause) {
2373                 coreListenerManager.fireSoneInsertAborted(sone, cause);
2374         }
2375
2376         //
2377         // SONEINSERTLISTENER METHODS
2378         //
2379
2380         /**
2381          * {@inheritDoc}
2382          */
2383         @Override
2384         public void imageInsertStarted(Image image) {
2385                 logger.log(Level.WARNING, String.format("Image insert started for %s...", image));
2386                 coreListenerManager.fireImageInsertStarted(image);
2387         }
2388
2389         /**
2390          * {@inheritDoc}
2391          */
2392         @Override
2393         public void imageInsertAborted(Image image) {
2394                 logger.log(Level.WARNING, String.format("Image insert aborted for %s.", image));
2395                 coreListenerManager.fireImageInsertAborted(image);
2396         }
2397
2398         /**
2399          * {@inheritDoc}
2400          */
2401         @Override
2402         public void imageInsertFinished(Image image, FreenetURI key) {
2403                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", image, key));
2404                 image.setKey(key.toString());
2405                 deleteTemporaryImage(image.getId());
2406                 touchConfiguration();
2407                 coreListenerManager.fireImageInsertFinished(image);
2408         }
2409
2410         /**
2411          * {@inheritDoc}
2412          */
2413         @Override
2414         public void imageInsertFailed(Image image, Throwable cause) {
2415                 logger.log(Level.WARNING, String.format("Image insert failed for %s." + image), cause);
2416                 coreListenerManager.fireImageInsertFailed(image, cause);
2417         }
2418
2419         /**
2420          * Convenience interface for external classes that want to access the core’s
2421          * configuration.
2422          *
2423          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
2424          */
2425         public static class Preferences {
2426
2427                 /** The wrapped options. */
2428                 private final Options options;
2429
2430                 /**
2431                  * Creates a new preferences object wrapped around the given options.
2432                  *
2433                  * @param options
2434                  *            The options to wrap
2435                  */
2436                 public Preferences(Options options) {
2437                         this.options = options;
2438                 }
2439
2440                 /**
2441                  * Returns the insertion delay.
2442                  *
2443                  * @return The insertion delay
2444                  */
2445                 public int getInsertionDelay() {
2446                         return options.getIntegerOption("InsertionDelay").get();
2447                 }
2448
2449                 /**
2450                  * Validates the given insertion delay.
2451                  *
2452                  * @param insertionDelay
2453                  *            The insertion delay to validate
2454                  * @return {@code true} if the given insertion delay was valid,
2455                  *         {@code false} otherwise
2456                  */
2457                 public boolean validateInsertionDelay(Integer insertionDelay) {
2458                         return options.getIntegerOption("InsertionDelay").validate(insertionDelay);
2459                 }
2460
2461                 /**
2462                  * Sets the insertion delay
2463                  *
2464                  * @param insertionDelay
2465                  *            The new insertion delay, or {@code null} to restore it to
2466                  *            the default value
2467                  * @return This preferences
2468                  */
2469                 public Preferences setInsertionDelay(Integer insertionDelay) {
2470                         options.getIntegerOption("InsertionDelay").set(insertionDelay);
2471                         return this;
2472                 }
2473
2474                 /**
2475                  * Returns the number of posts to show per page.
2476                  *
2477                  * @return The number of posts to show per page
2478                  */
2479                 public int getPostsPerPage() {
2480                         return options.getIntegerOption("PostsPerPage").get();
2481                 }
2482
2483                 /**
2484                  * Validates the number of posts per page.
2485                  *
2486                  * @param postsPerPage
2487                  *            The number of posts per page
2488                  * @return {@code true} if the number of posts per page was valid,
2489                  *         {@code false} otherwise
2490                  */
2491                 public boolean validatePostsPerPage(Integer postsPerPage) {
2492                         return options.getIntegerOption("PostsPerPage").validate(postsPerPage);
2493                 }
2494
2495                 /**
2496                  * Sets the number of posts to show per page.
2497                  *
2498                  * @param postsPerPage
2499                  *            The number of posts to show per page
2500                  * @return This preferences object
2501                  */
2502                 public Preferences setPostsPerPage(Integer postsPerPage) {
2503                         options.getIntegerOption("PostsPerPage").set(postsPerPage);
2504                         return this;
2505                 }
2506
2507                 /**
2508                  * Returns the number of images to show per page.
2509                  *
2510                  * @return The number of images to show per page
2511                  */
2512                 public int getImagesPerPage() {
2513                         return options.getIntegerOption("ImagesPerPage").get();
2514                 }
2515
2516                 /**
2517                  * Validates the number of images per page.
2518                  *
2519                  * @param imagesPerPage
2520                  *            The number of images per page
2521                  * @return {@code true} if the number of images per page was valid,
2522                  *         {@code false} otherwise
2523                  */
2524                 public boolean validateImagesPerPage(Integer imagesPerPage) {
2525                         return options.getIntegerOption("ImagesPerPage").validate(imagesPerPage);
2526                 }
2527
2528                 /**
2529                  * Sets the number of images per page.
2530                  *
2531                  * @param imagesPerPage
2532                  *            The number of images per page
2533                  * @return This preferences object
2534                  */
2535                 public Preferences setImagesPerPage(Integer imagesPerPage) {
2536                         options.getIntegerOption("ImagesPerPage").set(imagesPerPage);
2537                         return this;
2538                 }
2539
2540                 /**
2541                  * Returns the number of characters per post, or <code>-1</code> if the
2542                  * posts should not be cut off.
2543                  *
2544                  * @return The numbers of characters per post
2545                  */
2546                 public int getCharactersPerPost() {
2547                         return options.getIntegerOption("CharactersPerPost").get();
2548                 }
2549
2550                 /**
2551                  * Validates the number of characters per post.
2552                  *
2553                  * @param charactersPerPost
2554                  *            The number of characters per post
2555                  * @return {@code true} if the number of characters per post was valid,
2556                  *         {@code false} otherwise
2557                  */
2558                 public boolean validateCharactersPerPost(Integer charactersPerPost) {
2559                         return options.getIntegerOption("CharactersPerPost").validate(charactersPerPost);
2560                 }
2561
2562                 /**
2563                  * Sets the number of characters per post.
2564                  *
2565                  * @param charactersPerPost
2566                  *            The number of characters per post, or <code>-1</code> to
2567                  *            not cut off the posts
2568                  * @return This preferences objects
2569                  */
2570                 public Preferences setCharactersPerPost(Integer charactersPerPost) {
2571                         options.getIntegerOption("CharactersPerPost").set(charactersPerPost);
2572                         return this;
2573                 }
2574
2575                 /**
2576                  * Returns the number of characters the shortened post should have.
2577                  *
2578                  * @return The number of characters of the snippet
2579                  */
2580                 public int getPostCutOffLength() {
2581                         return options.getIntegerOption("PostCutOffLength").get();
2582                 }
2583
2584                 /**
2585                  * Validates the number of characters after which to cut off the post.
2586                  *
2587                  * @param postCutOffLength
2588                  *            The number of characters of the snippet
2589                  * @return {@code true} if the number of characters of the snippet is
2590                  *         valid, {@code false} otherwise
2591                  */
2592                 public boolean validatePostCutOffLength(Integer postCutOffLength) {
2593                         return options.getIntegerOption("PostCutOffLength").validate(postCutOffLength);
2594                 }
2595
2596                 /**
2597                  * Sets the number of characters the shortened post should have.
2598                  *
2599                  * @param postCutOffLength
2600                  *            The number of characters of the snippet
2601                  * @return This preferences
2602                  */
2603                 public Preferences setPostCutOffLength(Integer postCutOffLength) {
2604                         options.getIntegerOption("PostCutOffLength").set(postCutOffLength);
2605                         return this;
2606                 }
2607
2608                 /**
2609                  * Returns whether Sone requires full access to be even visible.
2610                  *
2611                  * @return {@code true} if Sone requires full access, {@code false}
2612                  *         otherwise
2613                  */
2614                 public boolean isRequireFullAccess() {
2615                         return options.getBooleanOption("RequireFullAccess").get();
2616                 }
2617
2618                 /**
2619                  * Sets whether Sone requires full access to be even visible.
2620                  *
2621                  * @param requireFullAccess
2622                  *            {@code true} if Sone requires full access, {@code false}
2623                  *            otherwise
2624                  */
2625                 public void setRequireFullAccess(Boolean requireFullAccess) {
2626                         options.getBooleanOption("RequireFullAccess").set(requireFullAccess);
2627                 }
2628
2629                 /**
2630                  * Returns the positive trust.
2631                  *
2632                  * @return The positive trust
2633                  */
2634                 public int getPositiveTrust() {
2635                         return options.getIntegerOption("PositiveTrust").get();
2636                 }
2637
2638                 /**
2639                  * Validates the positive trust.
2640                  *
2641                  * @param positiveTrust
2642                  *            The positive trust to validate
2643                  * @return {@code true} if the positive trust was valid, {@code false}
2644                  *         otherwise
2645                  */
2646                 public boolean validatePositiveTrust(Integer positiveTrust) {
2647                         return options.getIntegerOption("PositiveTrust").validate(positiveTrust);
2648                 }
2649
2650                 /**
2651                  * Sets the positive trust.
2652                  *
2653                  * @param positiveTrust
2654                  *            The new positive trust, or {@code null} to restore it to
2655                  *            the default vlaue
2656                  * @return This preferences
2657                  */
2658                 public Preferences setPositiveTrust(Integer positiveTrust) {
2659                         options.getIntegerOption("PositiveTrust").set(positiveTrust);
2660                         return this;
2661                 }
2662
2663                 /**
2664                  * Returns the negative trust.
2665                  *
2666                  * @return The negative trust
2667                  */
2668                 public int getNegativeTrust() {
2669                         return options.getIntegerOption("NegativeTrust").get();
2670                 }
2671
2672                 /**
2673                  * Validates the negative trust.
2674                  *
2675                  * @param negativeTrust
2676                  *            The negative trust to validate
2677                  * @return {@code true} if the negative trust was valid, {@code false}
2678                  *         otherwise
2679                  */
2680                 public boolean validateNegativeTrust(Integer negativeTrust) {
2681                         return options.getIntegerOption("NegativeTrust").validate(negativeTrust);
2682                 }
2683
2684                 /**
2685                  * Sets the negative trust.
2686                  *
2687                  * @param negativeTrust
2688                  *            The negative trust, or {@code null} to restore it to the
2689                  *            default value
2690                  * @return The preferences
2691                  */
2692                 public Preferences setNegativeTrust(Integer negativeTrust) {
2693                         options.getIntegerOption("NegativeTrust").set(negativeTrust);
2694                         return this;
2695                 }
2696
2697                 /**
2698                  * Returns the trust comment. This is the comment that is set in the web
2699                  * of trust when a trust value is assigned to an identity.
2700                  *
2701                  * @return The trust comment
2702                  */
2703                 public String getTrustComment() {
2704                         return options.getStringOption("TrustComment").get();
2705                 }
2706
2707                 /**
2708                  * Sets the trust comment.
2709                  *
2710                  * @param trustComment
2711                  *            The trust comment, or {@code null} to restore it to the
2712                  *            default value
2713                  * @return This preferences
2714                  */
2715                 public Preferences setTrustComment(String trustComment) {
2716                         options.getStringOption("TrustComment").set(trustComment);
2717                         return this;
2718                 }
2719
2720                 /**
2721                  * Returns whether the {@link FcpInterface FCP interface} is currently
2722                  * active.
2723                  *
2724                  * @see FcpInterface#setActive(boolean)
2725                  * @return {@code true} if the FCP interface is currently active,
2726                  *         {@code false} otherwise
2727                  */
2728                 public boolean isFcpInterfaceActive() {
2729                         return options.getBooleanOption("ActivateFcpInterface").get();
2730                 }
2731
2732                 /**
2733                  * Sets whether the {@link FcpInterface FCP interface} is currently
2734                  * active.
2735                  *
2736                  * @see FcpInterface#setActive(boolean)
2737                  * @param fcpInterfaceActive
2738                  *            {@code true} to activate the FCP interface, {@code false}
2739                  *            to deactivate the FCP interface
2740                  * @return This preferences object
2741                  */
2742                 public Preferences setFcpInterfaceActive(boolean fcpInterfaceActive) {
2743                         options.getBooleanOption("ActivateFcpInterface").set(fcpInterfaceActive);
2744                         return this;
2745                 }
2746
2747                 /**
2748                  * Returns the action level for which full access to the FCP interface
2749                  * is required.
2750                  *
2751                  * @return The action level for which full access to the FCP interface
2752                  *         is required
2753                  */
2754                 public FullAccessRequired getFcpFullAccessRequired() {
2755                         return FullAccessRequired.values()[options.getIntegerOption("FcpFullAccessRequired").get()];
2756                 }
2757
2758                 /**
2759                  * Sets the action level for which full access to the FCP interface is
2760                  * required
2761                  *
2762                  * @param fcpFullAccessRequired
2763                  *            The action level
2764                  * @return This preferences
2765                  */
2766                 public Preferences setFcpFullAccessRequired(FullAccessRequired fcpFullAccessRequired) {
2767                         options.getIntegerOption("FcpFullAccessRequired").set((fcpFullAccessRequired != null) ? fcpFullAccessRequired.ordinal() : null);
2768                         return this;
2769                 }
2770
2771         }
2772
2773 }