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

   1 /*
   2  * Sone - Core.java - Copyright © 2010–2013 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 static com.google.common.base.Optional.fromNullable;
  21 import static com.google.common.base.Preconditions.checkArgument;
  22 import static com.google.common.base.Preconditions.checkNotNull;
  23 import static com.google.common.base.Predicates.not;
  24 import static com.google.common.primitives.Longs.tryParse;
  25 import static java.lang.String.format;
  26 import static java.util.logging.Level.WARNING;
  27 import static net.pterodactylus.sone.data.Sone.LOCAL_SONE_FILTER;
  28
  29 import java.net.MalformedURLException;
  30 import java.util.ArrayList;
  31 import java.util.Collection;
  32 import java.util.HashMap;
  33 import java.util.HashSet;
  34 import java.util.List;
  35 import java.util.Map;
  36 import java.util.Map.Entry;
  37 import java.util.Set;
  38 import java.util.concurrent.ExecutorService;
  39 import java.util.concurrent.Executors;
  40 import java.util.concurrent.ScheduledExecutorService;
  41 import java.util.concurrent.TimeUnit;
  42 import java.util.logging.Level;
  43 import java.util.logging.Logger;
  44
  45 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidAlbumFound;
  46 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidImageFound;
  47 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidParentAlbumFound;
  48 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidPostFound;
  49 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidPostReplyFound;
  50 import net.pterodactylus.sone.core.Options.DefaultOption;
  51 import net.pterodactylus.sone.core.SoneInserter.SetInsertionDelay;
  52 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  53 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  54 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  55 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  56 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  57 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  58 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  59 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  60 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  61 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  62 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  63 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  64 import net.pterodactylus.sone.data.Album;
  65 import net.pterodactylus.sone.data.Client;
  66 import net.pterodactylus.sone.data.Image;
  67 import net.pterodactylus.sone.data.Post;
  68 import net.pterodactylus.sone.data.PostReply;
  69 import net.pterodactylus.sone.data.Profile;
  70 import net.pterodactylus.sone.data.Profile.Field;
  71 import net.pterodactylus.sone.data.Reply;
  72 import net.pterodactylus.sone.data.Sone;
  73 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  74 import net.pterodactylus.sone.data.Sone.SoneStatus;
  75 import net.pterodactylus.sone.data.SoneImpl;
  76 import net.pterodactylus.sone.data.TemporaryImage;
  77 import net.pterodactylus.sone.database.AlbumBuilder;
  78 import net.pterodactylus.sone.database.Database;
  79 import net.pterodactylus.sone.database.DatabaseException;
  80 import net.pterodactylus.sone.database.PostBuilder;
  81 import net.pterodactylus.sone.database.PostProvider;
  82 import net.pterodactylus.sone.database.PostReplyBuilder;
  83 import net.pterodactylus.sone.database.PostReplyProvider;
  84 import net.pterodactylus.sone.database.SoneProvider;
  85 import net.pterodactylus.sone.fcp.FcpInterface;
  86 import net.pterodactylus.sone.freenet.wot.Identity;
  87 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  88 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  89 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  90 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  91 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  92 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  93 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  94 import net.pterodactylus.sone.main.SonePlugin;
  95 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  96 import net.pterodactylus.util.config.Configuration;
  97 import net.pterodactylus.util.config.ConfigurationException;
  98 import net.pterodactylus.util.logging.Logging;
  99 import net.pterodactylus.util.number.Numbers;
 100 import net.pterodactylus.util.service.AbstractService;
 101 import net.pterodactylus.util.thread.NamedThreadFactory;
 102
 103 import com.google.common.annotations.VisibleForTesting;
 104 import com.google.common.base.Optional;
 105 import com.google.common.base.Predicates;
 106 import com.google.common.collect.FluentIterable;
 107 import com.google.common.collect.HashMultimap;
 108 import com.google.common.collect.ImmutableSet;
 109 import com.google.common.collect.Multimap;
 110 import com.google.common.collect.Multimaps;
 111 import com.google.common.eventbus.EventBus;
 112 import com.google.common.eventbus.Subscribe;
 113 import com.google.inject.Inject;
 114 import com.google.inject.Singleton;
 115
 116 import freenet.keys.FreenetURI;
 117
 118 /**
 119  * The Sone core.
 120  *
 121  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 122  */
 123 @Singleton
 124 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 125
 126         /** The logger. */
 127         private static final Logger logger = Logging.getLogger(Core.class);
 128
 129         /** The start time. */
 130         private final long startupTime = System.currentTimeMillis();
 131
 132         /** The options. */
 133         private final Options options = new Options();
 134
 135         /** The preferences. */
 136         private final Preferences preferences = new Preferences(options);
 137
 138         /** The event bus. */
 139         private final EventBus eventBus;
 140
 141         /** The configuration. */
 142         private final Configuration configuration;
 143
 144         /** Whether we’re currently saving the configuration. */
 145         private boolean storingConfiguration = false;
 146
 147         /** The identity manager. */
 148         private final IdentityManager identityManager;
 149
 150         /** Interface to freenet. */
 151         private final FreenetInterface freenetInterface;
 152
 153         /** The Sone downloader. */
 154         private final SoneDownloader soneDownloader;
 155
 156         /** The image inserter. */
 157         private final ImageInserter imageInserter;
 158
 159         /** Sone downloader thread-pool. */
 160         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 161
 162         /** The update checker. */
 163         private final UpdateChecker updateChecker;
 164
 165         /** The trust updater. */
 166         private final WebOfTrustUpdater webOfTrustUpdater;
 167
 168         /** The FCP interface. */
 169         private volatile FcpInterface fcpInterface;
 170
 171         /** The times Sones were followed. */
 172         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 173
 174         /** Locked local Sones. */
 175         /* synchronize on itself. */
 176         private final Set<Sone> lockedSones = new HashSet<Sone>();
 177
 178         /** Sone inserters. */
 179         /* synchronize access on this on sones. */
 180         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 181
 182         /** Sone rescuers. */
 183         /* synchronize access on this on sones. */
 184         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 185
 186         /** All Sones. */
 187         /* synchronize access on this on itself. */
 188         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 189
 190         /** All known Sones. */
 191         private final Set<String> knownSones = new HashSet<String>();
 192
 193         /** The post database. */
 194         private final Database database;
 195
 196         /** All bookmarked posts. */
 197         /* synchronize access on itself. */
 198         private final Set<String> bookmarkedPosts = new HashSet<String>();
 199
 200         /** Trusted identities, sorted by own identities. */
 201         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 202
 203         /** All temporary images. */
 204         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 205
 206         /** Ticker for threads that mark own elements as known. */
 207         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 208
 209         /** The time the configuration was last touched. */
 210         private volatile long lastConfigurationUpdate;
 211
 212         /**
 213          * Creates a new core.
 214          *
 215          * @param configuration
 216          *            The configuration of the core
 217          * @param freenetInterface
 218          *            The freenet interface
 219          * @param identityManager
 220          *            The identity manager
 221          * @param webOfTrustUpdater
 222          *            The WebOfTrust updater
 223          * @param eventBus
 224          *            The event bus
 225          * @param database
 226          *            The database
 227          */
 228         @Inject
 229         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 230                 super("Sone Core");
 231                 this.configuration = configuration;
 232                 this.freenetInterface = freenetInterface;
 233                 this.identityManager = identityManager;
 234                 this.soneDownloader = new SoneDownloaderImpl(this, freenetInterface);
 235                 this.imageInserter = new ImageInserter(freenetInterface, freenetInterface.new InsertTokenSupplier());
 236                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 237                 this.webOfTrustUpdater = webOfTrustUpdater;
 238                 this.eventBus = eventBus;
 239                 this.database = database;
 240         }
 241
 242         @VisibleForTesting
 243         protected Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, SoneDownloader soneDownloader, ImageInserter imageInserter, UpdateChecker updateChecker, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 244                 super("Sone Core");
 245                 this.configuration = configuration;
 246                 this.freenetInterface = freenetInterface;
 247                 this.identityManager = identityManager;
 248                 this.soneDownloader = soneDownloader;
 249                 this.imageInserter = imageInserter;
 250                 this.updateChecker = updateChecker;
 251                 this.webOfTrustUpdater = webOfTrustUpdater;
 252                 this.eventBus = eventBus;
 253                 this.database = database;
 254         }
 255
 256         //
 257         // ACCESSORS
 258         //
 259
 260         /**
 261          * Returns the time Sone was started.
 262          *
 263          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 264          */
 265         public long getStartupTime() {
 266                 return startupTime;
 267         }
 268
 269         /**
 270          * Returns the options used by the core.
 271          *
 272          * @return The options of the core
 273          */
 274         public Preferences getPreferences() {
 275                 return preferences;
 276         }
 277
 278         /**
 279          * Returns the identity manager used by the core.
 280          *
 281          * @return The identity manager
 282          */
 283         public IdentityManager getIdentityManager() {
 284                 return identityManager;
 285         }
 286
 287         /**
 288          * Returns the update checker.
 289          *
 290          * @return The update checker
 291          */
 292         public UpdateChecker getUpdateChecker() {
 293                 return updateChecker;
 294         }
 295
 296         /**
 297          * Sets the FCP interface to use.
 298          *
 299          * @param fcpInterface
 300          *            The FCP interface to use
 301          */
 302         public void setFcpInterface(FcpInterface fcpInterface) {
 303                 this.fcpInterface = fcpInterface;
 304         }
 305
 306         /**
 307          * Returns the Sone rescuer for the given local Sone.
 308          *
 309          * @param sone
 310          *            The local Sone to get the rescuer for
 311          * @return The Sone rescuer for the given Sone
 312          */
 313         public SoneRescuer getSoneRescuer(Sone sone) {
 314                 checkNotNull(sone, "sone must not be null");
 315                 checkArgument(sone.isLocal(), "sone must be local");
 316                 synchronized (sones) {
 317                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 318                         if (soneRescuer == null) {
 319                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 320                                 soneRescuers.put(sone, soneRescuer);
 321                                 soneRescuer.start();
 322                         }
 323                         return soneRescuer;
 324                 }
 325         }
 326
 327         /**
 328          * Returns whether the given Sone is currently locked.
 329          *
 330          * @param sone
 331          *            The sone to check
 332          * @return {@code true} if the Sone is locked, {@code false} if it is not
 333          */
 334         public boolean isLocked(Sone sone) {
 335                 synchronized (lockedSones) {
 336                         return lockedSones.contains(sone);
 337                 }
 338         }
 339
 340         /**
 341          * {@inheritDocs}
 342          */
 343         @Override
 344         public Collection<Sone> getSones() {
 345                 synchronized (sones) {
 346                         return ImmutableSet.copyOf(sones.values());
 347                 }
 348         }
 349
 350         /**
 351          * Returns the Sone with the given ID, regardless whether it’s local or
 352          * remote.
 353          *
 354          * @param id
 355          *            The ID of the Sone to get
 356          * @return The Sone with the given ID, or {@code null} if there is no such
 357          *         Sone
 358          */
 359         @Override
 360         public Optional<Sone> getSone(String id) {
 361                 synchronized (sones) {
 362                         return Optional.fromNullable(sones.get(id));
 363                 }
 364         }
 365
 366         /**
 367          * {@inheritDocs}
 368          */
 369         @Override
 370         public Collection<Sone> getLocalSones() {
 371                 synchronized (sones) {
 372                         return FluentIterable.from(sones.values()).filter(LOCAL_SONE_FILTER).toSet();
 373                 }
 374         }
 375
 376         /**
 377          * Returns the local Sone with the given ID, optionally creating a new Sone.
 378          *
 379          * @param id
 380          *            The ID of the Sone
 381          * @param create
 382          *            {@code true} to create a new Sone if none exists,
 383          *            {@code false} to return null if none exists
 384          * @return The Sone with the given ID, or {@code null}
 385          */
 386         public Sone getLocalSone(String id, boolean create) {
 387                 synchronized (sones) {
 388                         Sone sone = sones.get(id);
 389                         if ((sone == null) && create) {
 390                                 sone = new SoneImpl(id, true);
 391                                 sones.put(id, sone);
 392                         }
 393                         if ((sone != null) && !sone.isLocal()) {
 394                                 sone = new SoneImpl(id, true);
 395                                 sones.put(id, sone);
 396                         }
 397                         return sone;
 398                 }
 399         }
 400
 401         /**
 402          * {@inheritDocs}
 403          */
 404         @Override
 405         public Collection<Sone> getRemoteSones() {
 406                 synchronized (sones) {
 407                         return FluentIterable.from(sones.values()).filter(not(LOCAL_SONE_FILTER)).toSet();
 408                 }
 409         }
 410
 411         /**
 412          * Returns the remote Sone with the given ID.
 413          *
 414          * @param id
 415          *            The ID of the remote Sone to get
 416          * @param create
 417          *            {@code true} to always create a Sone, {@code false} to return
 418          *            {@code null} if no Sone with the given ID exists
 419          * @return The Sone with the given ID
 420          */
 421         public Sone getRemoteSone(String id, boolean create) {
 422                 synchronized (sones) {
 423                         Sone sone = sones.get(id);
 424                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 425                                 sone = new SoneImpl(id, false);
 426                                 sones.put(id, sone);
 427                         }
 428                         return sone;
 429                 }
 430         }
 431
 432         /**
 433          * Returns whether the given Sone has been modified.
 434          *
 435          * @param sone
 436          *            The Sone to check for modifications
 437          * @return {@code true} if a modification has been detected in the Sone,
 438          *         {@code false} otherwise
 439          */
 440         public boolean isModifiedSone(Sone sone) {
 441                 return soneInserters.containsKey(sone) && soneInserters.get(sone).isModified();
 442         }
 443
 444         /**
 445          * Returns the time when the given was first followed by any local Sone.
 446          *
 447          * @param sone
 448          *            The Sone to get the time for
 449          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 450          *         been followed, or {@link Long#MAX_VALUE}
 451          */
 452         public long getSoneFollowingTime(Sone sone) {
 453                 synchronized (soneFollowingTimes) {
 454                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 455                 }
 456         }
 457
 458         /**
 459          * Returns a post builder.
 460          *
 461          * @return A new post builder
 462          */
 463         public PostBuilder postBuilder() {
 464                 return database.newPostBuilder();
 465         }
 466
 467         /**
 468          * {@inheritDoc}
 469          */
 470         @Override
 471         public Optional<Post> getPost(String postId) {
 472                 return database.getPost(postId);
 473         }
 474
 475         /**
 476          * {@inheritDocs}
 477          */
 478         @Override
 479         public Collection<Post> getPosts(String soneId) {
 480                 return database.getPosts(soneId);
 481         }
 482
 483         /**
 484          * {@inheritDoc}
 485          */
 486         @Override
 487         public Collection<Post> getDirectedPosts(final String recipientId) {
 488                 checkNotNull(recipientId, "recipient must not be null");
 489                 return database.getDirectedPosts(recipientId);
 490         }
 491
 492         /**
 493          * Returns a post reply builder.
 494          *
 495          * @return A new post reply builder
 496          */
 497         public PostReplyBuilder postReplyBuilder() {
 498                 return database.newPostReplyBuilder();
 499         }
 500
 501         /**
 502          * {@inheritDoc}
 503          */
 504         @Override
 505         public Optional<PostReply> getPostReply(String replyId) {
 506                 return database.getPostReply(replyId);
 507         }
 508
 509         /**
 510          * {@inheritDoc}
 511          */
 512         @Override
 513         public List<PostReply> getReplies(final String postId) {
 514                 return database.getReplies(postId);
 515         }
 516
 517         /**
 518          * Returns all Sones that have liked the given post.
 519          *
 520          * @param post
 521          *            The post to get the liking Sones for
 522          * @return The Sones that like the given post
 523          */
 524         public Set<Sone> getLikes(Post post) {
 525                 Set<Sone> sones = new HashSet<Sone>();
 526                 for (Sone sone : getSones()) {
 527                         if (sone.getLikedPostIds().contains(post.getId())) {
 528                                 sones.add(sone);
 529                         }
 530                 }
 531                 return sones;
 532         }
 533
 534         /**
 535          * Returns all Sones that have liked the given reply.
 536          *
 537          * @param reply
 538          *            The reply to get the liking Sones for
 539          * @return The Sones that like the given reply
 540          */
 541         public Set<Sone> getLikes(PostReply reply) {
 542                 Set<Sone> sones = new HashSet<Sone>();
 543                 for (Sone sone : getSones()) {
 544                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 545                                 sones.add(sone);
 546                         }
 547                 }
 548                 return sones;
 549         }
 550
 551         /**
 552          * Returns whether the given post is bookmarked.
 553          *
 554          * @param post
 555          *            The post to check
 556          * @return {@code true} if the given post is bookmarked, {@code false}
 557          *         otherwise
 558          */
 559         public boolean isBookmarked(Post post) {
 560                 return isPostBookmarked(post.getId());
 561         }
 562
 563         /**
 564          * Returns whether the post with the given ID is bookmarked.
 565          *
 566          * @param id
 567          *            The ID of the post to check
 568          * @return {@code true} if the post with the given ID is bookmarked,
 569          *         {@code false} otherwise
 570          */
 571         public boolean isPostBookmarked(String id) {
 572                 synchronized (bookmarkedPosts) {
 573                         return bookmarkedPosts.contains(id);
 574                 }
 575         }
 576
 577         /**
 578          * Returns all currently known bookmarked posts.
 579          *
 580          * @return All bookmarked posts
 581          */
 582         public Set<Post> getBookmarkedPosts() {
 583                 Set<Post> posts = new HashSet<Post>();
 584                 synchronized (bookmarkedPosts) {
 585                         for (String bookmarkedPostId : bookmarkedPosts) {
 586                                 Optional<Post> post = getPost(bookmarkedPostId);
 587                                 if (post.isPresent()) {
 588                                         posts.add(post.get());
 589                                 }
 590                         }
 591                 }
 592                 return posts;
 593         }
 594
 595         public AlbumBuilder albumBuilder() {
 596                 return database.newAlbumBuilder();
 597         }
 598
 599         /**
 600          * Returns the album with the given ID, optionally creating a new album if
 601          * an album with the given ID can not be found.
 602          *
 603          * @param albumId
 604          *            The ID of the album
 605          * @return The album with the given ID, or {@code null} if no album with the
 606          *         given ID exists
 607          */
 608         public Album getAlbum(String albumId) {
 609                 return database.getAlbum(albumId).orNull();
 610         }
 611
 612         /**
 613          * Returns the image with the given ID, creating it if necessary.
 614          *
 615          * @param imageId
 616          *            The ID of the image
 617          * @return The image with the given ID
 618          */
 619         public Image getImage(String imageId) {
 620                 return getImage(imageId, true);
 621         }
 622
 623         /**
 624          * Returns the image with the given ID, optionally creating it if it does
 625          * not exist.
 626          *
 627          * @param imageId
 628          *            The ID of the image
 629          * @param create
 630          *            {@code true} to create an image if none exists with the given
 631          *            ID
 632          * @return The image with the given ID, or {@code null} if none exists and
 633          *         none was created
 634          */
 635         public Image getImage(String imageId, boolean create) {
 636                 Optional<Image> image = database.getImage(imageId);
 637                 if (image.isPresent()) {
 638                         return image.get();
 639                 }
 640                 if (!create) {
 641                         return null;
 642                 }
 643                 Image newImage = database.newImageBuilder().withId(imageId).build();
 644                 database.storeImage(newImage);
 645                 return newImage;
 646         }
 647
 648         /**
 649          * Returns the temporary image with the given ID.
 650          *
 651          * @param imageId
 652          *            The ID of the temporary image
 653          * @return The temporary image, or {@code null} if there is no temporary
 654          *         image with the given ID
 655          */
 656         public TemporaryImage getTemporaryImage(String imageId) {
 657                 synchronized (temporaryImages) {
 658                         return temporaryImages.get(imageId);
 659                 }
 660         }
 661
 662         //
 663         // ACTIONS
 664         //
 665
 666         /**
 667          * Locks the given Sone. A locked Sone will not be inserted by
 668          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 669          * again.
 670          *
 671          * @param sone
 672          *            The sone to lock
 673          */
 674         public void lockSone(Sone sone) {
 675                 synchronized (lockedSones) {
 676                         if (lockedSones.add(sone)) {
 677                                 eventBus.post(new SoneLockedEvent(sone));
 678                         }
 679                 }
 680         }
 681
 682         /**
 683          * Unlocks the given Sone.
 684          *
 685          * @see #lockSone(Sone)
 686          * @param sone
 687          *            The sone to unlock
 688          */
 689         public void unlockSone(Sone sone) {
 690                 synchronized (lockedSones) {
 691                         if (lockedSones.remove(sone)) {
 692                                 eventBus.post(new SoneUnlockedEvent(sone));
 693                         }
 694                 }
 695         }
 696
 697         /**
 698          * Adds a local Sone from the given own identity.
 699          *
 700          * @param ownIdentity
 701          *            The own identity to create a Sone from
 702          * @return The added (or already existing) Sone
 703          */
 704         public Sone addLocalSone(OwnIdentity ownIdentity) {
 705                 if (ownIdentity == null) {
 706                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 707                         return null;
 708                 }
 709                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 710                 synchronized (sones) {
 711                         final Sone sone;
 712                         try {
 713                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 714                         } catch (MalformedURLException mue1) {
 715                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 716                                 return null;
 717                         }
 718                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 719                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 720                         sone.setKnown(true);
 721                         /* TODO - load posts ’n stuff */
 722                         sones.put(ownIdentity.getId(), sone);
 723                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 724                         soneInserters.put(sone, soneInserter);
 725                         sone.setStatus(SoneStatus.idle);
 726                         loadSone(sone);
 727                         soneInserter.start();
 728                         return sone;
 729                 }
 730         }
 731
 732         /**
 733          * Creates a new Sone for the given own identity.
 734          *
 735          * @param ownIdentity
 736          *            The own identity to create a Sone for
 737          * @return The created Sone
 738          */
 739         public Sone createSone(OwnIdentity ownIdentity) {
 740                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 741                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 742                         return null;
 743                 }
 744                 Sone sone = addLocalSone(ownIdentity);
 745
 746                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 747                 touchConfiguration();
 748                 return sone;
 749         }
 750
 751         /**
 752          * Adds the Sone of the given identity.
 753          *
 754          * @param identity
 755          *            The identity whose Sone to add
 756          * @return The added or already existing Sone
 757          */
 758         public Sone addRemoteSone(Identity identity) {
 759                 if (identity == null) {
 760                         logger.log(Level.WARNING, "Given Identity is null!");
 761                         return null;
 762                 }
 763                 final Long latestEdition = fromNullable(tryParse(
 764                                 identity.getProperty("Sone.LatestEdition"))).or(0L);
 765                 synchronized (sones) {
 766                         final Sone sone = getRemoteSone(identity.getId(), true);
 767                         if (sone.isLocal()) {
 768                                 return sone;
 769                         }
 770                         sone.setIdentity(identity);
 771                         boolean newSone = sone.getRequestUri() == null;
 772                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 773                         sone.setLatestEdition(latestEdition);
 774                         if (newSone) {
 775                                 synchronized (knownSones) {
 776                                         newSone = !knownSones.contains(sone.getId());
 777                                 }
 778                                 sone.setKnown(!newSone);
 779                                 if (newSone) {
 780                                         eventBus.post(new NewSoneFoundEvent(sone));
 781                                         for (Sone localSone : getLocalSones()) {
 782                                                 if (localSone.getOptions().isAutoFollow()) {
 783                                                         followSone(localSone, sone.getId());
 784                                                 }
 785                                         }
 786                                 }
 787                         }
 788                         soneDownloader.addSone(sone);
 789                         soneDownloaders.execute(soneDownloader.fetchSoneWithUriAction(sone));
 790                         return sone;
 791                 }
 792         }
 793
 794         /**
 795          * Lets the given local Sone follow the Sone with the given ID.
 796          *
 797          * @param sone
 798          *            The local Sone that should follow another Sone
 799          * @param soneId
 800          *            The ID of the Sone to follow
 801          */
 802         public void followSone(Sone sone, String soneId) {
 803                 checkNotNull(sone, "sone must not be null");
 804                 checkNotNull(soneId, "soneId must not be null");
 805                 sone.addFriend(soneId);
 806                 synchronized (soneFollowingTimes) {
 807                         if (!soneFollowingTimes.containsKey(soneId)) {
 808                                 long now = System.currentTimeMillis();
 809                                 soneFollowingTimes.put(soneId, now);
 810                                 Optional<Sone> followedSone = getSone(soneId);
 811                                 if (!followedSone.isPresent()) {
 812                                         return;
 813                                 }
 814                                 for (Post post : followedSone.get().getPosts()) {
 815                                         if (post.getTime() < now) {
 816                                                 markPostKnown(post);
 817                                         }
 818                                 }
 819                                 for (PostReply reply : followedSone.get().getReplies()) {
 820                                         if (reply.getTime() < now) {
 821                                                 markReplyKnown(reply);
 822                                         }
 823                                 }
 824                         }
 825                 }
 826                 touchConfiguration();
 827         }
 828
 829         /**
 830          * Lets the given local Sone unfollow the Sone with the given ID.
 831          *
 832          * @param sone
 833          *            The local Sone that should unfollow another Sone
 834          * @param soneId
 835          *            The ID of the Sone being unfollowed
 836          */
 837         public void unfollowSone(Sone sone, String soneId) {
 838                 checkNotNull(sone, "sone must not be null");
 839                 checkNotNull(soneId, "soneId must not be null");
 840                 sone.removeFriend(soneId);
 841                 boolean unfollowedSoneStillFollowed = false;
 842                 for (Sone localSone : getLocalSones()) {
 843                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 844                 }
 845                 if (!unfollowedSoneStillFollowed) {
 846                         synchronized (soneFollowingTimes) {
 847                                 soneFollowingTimes.remove(soneId);
 848                         }
 849                 }
 850                 touchConfiguration();
 851         }
 852
 853         /**
 854          * Sets the trust value of the given origin Sone for the target Sone.
 855          *
 856          * @param origin
 857          *            The origin Sone
 858          * @param target
 859          *            The target Sone
 860          * @param trustValue
 861          *            The trust value (from {@code -100} to {@code 100})
 862          */
 863         public void setTrust(Sone origin, Sone target, int trustValue) {
 864                 checkNotNull(origin, "origin must not be null");
 865                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 866                 checkNotNull(target, "target must not be null");
 867                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 868                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 869         }
 870
 871         /**
 872          * Removes any trust assignment for the given target Sone.
 873          *
 874          * @param origin
 875          *            The trust origin
 876          * @param target
 877          *            The trust target
 878          */
 879         public void removeTrust(Sone origin, Sone target) {
 880                 checkNotNull(origin, "origin must not be null");
 881                 checkNotNull(target, "target must not be null");
 882                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 883                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 884         }
 885
 886         /**
 887          * Assigns the configured positive trust value for the given target.
 888          *
 889          * @param origin
 890          *            The trust origin
 891          * @param target
 892          *            The trust target
 893          */
 894         public void trustSone(Sone origin, Sone target) {
 895                 setTrust(origin, target, preferences.getPositiveTrust());
 896         }
 897
 898         /**
 899          * Assigns the configured negative trust value for the given target.
 900          *
 901          * @param origin
 902          *            The trust origin
 903          * @param target
 904          *            The trust target
 905          */
 906         public void distrustSone(Sone origin, Sone target) {
 907                 setTrust(origin, target, preferences.getNegativeTrust());
 908         }
 909
 910         /**
 911          * Removes the trust assignment for the given target.
 912          *
 913          * @param origin
 914          *            The trust origin
 915          * @param target
 916          *            The trust target
 917          */
 918         public void untrustSone(Sone origin, Sone target) {
 919                 removeTrust(origin, target);
 920         }
 921
 922         /**
 923          * Updates the stored Sone with the given Sone.
 924          *
 925          * @param sone
 926          *            The updated Sone
 927          */
 928         public void updateSone(Sone sone) {
 929                 updateSone(sone, false);
 930         }
 931
 932         /**
 933          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 934          * {@code true}, an older Sone than the current Sone can be given to restore
 935          * an old state.
 936          *
 937          * @param sone
 938          *            The Sone to update
 939          * @param soneRescueMode
 940          *            {@code true} if the stored Sone should be updated regardless
 941          *            of the age of the given Sone
 942          */
 943         public void updateSone(Sone sone, boolean soneRescueMode) {
 944                 Optional<Sone> storedSone = getSone(sone.getId());
 945                 if (storedSone.isPresent()) {
 946                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 947                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 948                                 return;
 949                         }
 950                         /* find removed posts. */
 951                         Collection<Post> removedPosts = new ArrayList<Post>();
 952                         Collection<Post> newPosts = new ArrayList<Post>();
 953                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 954                         for (Post oldPost : existingPosts) {
 955                                 if (!sone.getPosts().contains(oldPost)) {
 956                                         removedPosts.add(oldPost);
 957                                 }
 958                         }
 959                         /* find new posts. */
 960                         for (Post newPost : sone.getPosts()) {
 961                                 if (existingPosts.contains(newPost)) {
 962                                         continue;
 963                                 }
 964                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
 965                                         newPost.setKnown(true);
 966                                 } else if (!newPost.isKnown()) {
 967                                         newPosts.add(newPost);
 968                                 }
 969                         }
 970                         /* store posts. */
 971                         database.storePosts(sone, sone.getPosts());
 972                         Collection<PostReply> newPostReplies = new ArrayList<PostReply>();
 973                         Collection<PostReply> removedPostReplies = new ArrayList<PostReply>();
 974                         if (!soneRescueMode) {
 975                                 for (PostReply reply : storedSone.get().getReplies()) {
 976                                         if (!sone.getReplies().contains(reply)) {
 977                                                 removedPostReplies.add(reply);
 978                                         }
 979                                 }
 980                         }
 981                         Set<PostReply> storedReplies = storedSone.get().getReplies();
 982                         for (PostReply reply : sone.getReplies()) {
 983                                 if (storedReplies.contains(reply)) {
 984                                         continue;
 985                                 }
 986                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
 987                                         reply.setKnown(true);
 988                                 } else if (!reply.isKnown()) {
 989                                         newPostReplies.add(reply);
 990                                 }
 991                         }
 992                         database.storePostReplies(sone, sone.getReplies());
 993                         for (Album album : storedSone.get().getRootAlbum().getAlbums()) {
 994                                 database.removeAlbum(album);
 995                                 for (Image image : album.getImages()) {
 996                                         database.removeImage(image);
 997                                 }
 998                         }
 999                         for (Post removedPost : removedPosts) {
1000                                 eventBus.post(new PostRemovedEvent(removedPost));
1001                         }
1002                         for (Post newPost : newPosts) {
1003                                 eventBus.post(new NewPostFoundEvent(newPost));
1004                         }
1005                         for (PostReply removedPostReply : removedPostReplies) {
1006                                 eventBus.post(new PostReplyRemovedEvent(removedPostReply));
1007                         }
1008                         for (PostReply newPostReply : newPostReplies) {
1009                                 eventBus.post(new NewPostReplyFoundEvent(newPostReply));
1010                         }
1011                         for (Album album : sone.getRootAlbum().getAlbums()) {
1012                                 database.storeAlbum(album);
1013                                 for (Image image : album.getImages()) {
1014                                         database.storeImage(image);
1015                                 }
1016                         }
1017                         synchronized (sones) {
1018                                 sone.setOptions(storedSone.get().getOptions());
1019                                 sone.setKnown(storedSone.get().isKnown());
1020                                 sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
1021                                 if (sone.isLocal()) {
1022                                         soneInserters.get(storedSone.get()).setSone(sone);
1023                                         touchConfiguration();
1024                                 }
1025                                 sones.put(sone.getId(), sone);
1026                         }
1027                 }
1028         }
1029
1030         /**
1031          * Deletes the given Sone. This will remove the Sone from the
1032          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1033          * remove the context from its identity.
1034          *
1035          * @param sone
1036          *            The Sone to delete
1037          */
1038         public void deleteSone(Sone sone) {
1039                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1040                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1041                         return;
1042                 }
1043                 synchronized (sones) {
1044                         if (!getLocalSones().contains(sone)) {
1045                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1046                                 return;
1047                         }
1048                         sones.remove(sone.getId());
1049                         SoneInserter soneInserter = soneInserters.remove(sone);
1050                         soneInserter.stop();
1051                 }
1052                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1053                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1054                 try {
1055                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1056                 } catch (ConfigurationException ce1) {
1057                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1058                 }
1059         }
1060
1061         /**
1062          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1063          * known} before, a {@link MarkSoneKnownEvent} is fired.
1064          *
1065          * @param sone
1066          *            The Sone to mark as known
1067          */
1068         public void markSoneKnown(Sone sone) {
1069                 if (!sone.isKnown()) {
1070                         sone.setKnown(true);
1071                         synchronized (knownSones) {
1072                                 knownSones.add(sone.getId());
1073                         }
1074                         eventBus.post(new MarkSoneKnownEvent(sone));
1075                         touchConfiguration();
1076                 }
1077         }
1078
1079         /**
1080          * Loads and updates the given Sone from the configuration. If any error is
1081          * encountered, loading is aborted and the given Sone is not changed.
1082          *
1083          * @param sone
1084          *            The Sone to load and update
1085          */
1086         public void loadSone(Sone sone) {
1087                 if (!sone.isLocal()) {
1088                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1089                         return;
1090                 }
1091                 logger.info(String.format("Loading local Sone: %s", sone));
1092
1093                 /* load Sone. */
1094                 String sonePrefix = "Sone/" + sone.getId();
1095                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1096                 if (soneTime == null) {
1097                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1098                         return;
1099                 }
1100                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1101
1102                 /* load profile. */
1103                 ConfigurationSoneParser configurationSoneParser = new ConfigurationSoneParser(configuration, sone);
1104                 Profile profile = configurationSoneParser.parseProfile();
1105
1106                 /* load posts. */
1107                 Collection<Post> posts;
1108                 try {
1109                         posts = configurationSoneParser.parsePosts(database);
1110                 } catch (InvalidPostFound ipf) {
1111                         logger.log(Level.WARNING, "Invalid post found, aborting load!");
1112                         return;
1113                 }
1114
1115                 /* load replies. */
1116                 Collection<PostReply> replies;
1117                 try {
1118                         replies = configurationSoneParser.parsePostReplies(database);
1119                 } catch (InvalidPostReplyFound iprf) {
1120                         logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1121                         return;
1122                 }
1123
1124                 /* load post likes. */
1125                 Set<String> likedPostIds =
1126                                 configurationSoneParser.parseLikedPostIds();
1127
1128                 /* load reply likes. */
1129                 Set<String> likedReplyIds =
1130                                 configurationSoneParser.parseLikedPostReplyIds();
1131
1132                 /* load friends. */
1133                 Set<String> friends = configurationSoneParser.parseFriends();
1134
1135                 /* load albums. */
1136                 List<Album> topLevelAlbums;
1137                 try {
1138                         topLevelAlbums =
1139                                         configurationSoneParser.parseTopLevelAlbums(database);
1140                 } catch (InvalidAlbumFound iaf) {
1141                         logger.log(Level.WARNING, "Invalid album found, aborting load!");
1142                         return;
1143                 } catch (InvalidParentAlbumFound ipaf) {
1144                         logger.log(Level.WARNING, format("Invalid parent album ID: %s",
1145                                         ipaf.getAlbumParentId()));
1146                         return;
1147                 }
1148
1149                 /* load images. */
1150                 try {
1151                         configurationSoneParser.parseImages(database);
1152                 } catch (InvalidImageFound iif) {
1153                         logger.log(WARNING, "Invalid image found, aborting load!");
1154                         return;
1155                 } catch (InvalidParentAlbumFound ipaf) {
1156                         logger.log(Level.WARNING,
1157                                         format("Invalid album image (%s) encountered, aborting load!",
1158                                                         ipaf.getAlbumParentId()));
1159                         return;
1160                 }
1161
1162                 /* load avatar. */
1163                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1164                 if (avatarId != null) {
1165                         final Map<String, Image> images =
1166                                         configurationSoneParser.getImages();
1167                         profile.setAvatar(images.get(avatarId));
1168                 }
1169
1170                 /* load options. */
1171                 sone.getOptions().setAutoFollow(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1172                 sone.getOptions().setSoneInsertNotificationEnabled(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1173                 sone.getOptions().setShowNewSoneNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1174                 sone.getOptions().setShowNewPostNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1175                 sone.getOptions().setShowNewReplyNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1176                 sone.getOptions().setShowCustomAvatars(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1177
1178                 /* if we’re still here, Sone was loaded successfully. */
1179                 synchronized (sone) {
1180                         sone.setTime(soneTime);
1181                         sone.setProfile(profile);
1182                         sone.setPosts(posts);
1183                         sone.setReplies(replies);
1184                         sone.setLikePostIds(likedPostIds);
1185                         sone.setLikeReplyIds(likedReplyIds);
1186                         for (String friendId : friends) {
1187                                 followSone(sone, friendId);
1188                         }
1189                         for (Album album : sone.getRootAlbum().getAlbums()) {
1190                                 sone.getRootAlbum().removeAlbum(album);
1191                         }
1192                         for (Album album : topLevelAlbums) {
1193                                 sone.getRootAlbum().addAlbum(album);
1194                         }
1195                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1196                 }
1197                 synchronized (knownSones) {
1198                         for (String friend : friends) {
1199                                 knownSones.add(friend);
1200                         }
1201                 }
1202                 database.storePosts(sone, posts);
1203                 for (Post post : posts) {
1204                         post.setKnown(true);
1205                 }
1206                 database.storePostReplies(sone, replies);
1207                 for (PostReply reply : replies) {
1208                         reply.setKnown(true);
1209                 }
1210
1211                 logger.info(String.format("Sone loaded successfully: %s", sone));
1212         }
1213
1214         /**
1215          * Creates a new post.
1216          *
1217          * @param sone
1218          *            The Sone that creates the post
1219          * @param recipient
1220          *            The recipient Sone, or {@code null} if this post does not have
1221          *            a recipient
1222          * @param text
1223          *            The text of the post
1224          * @return The created post
1225          */
1226         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
1227                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1228         }
1229
1230         /**
1231          * Creates a new post.
1232          *
1233          * @param sone
1234          *            The Sone that creates the post
1235          * @param recipient
1236          *            The recipient Sone, or {@code null} if this post does not have
1237          *            a recipient
1238          * @param time
1239          *            The time of the post
1240          * @param text
1241          *            The text of the post
1242          * @return The created post
1243          */
1244         public Post createPost(Sone sone, Optional<Sone> recipient, long time, String text) {
1245                 checkNotNull(text, "text must not be null");
1246                 checkArgument(text.trim().length() > 0, "text must not be empty");
1247                 if (!sone.isLocal()) {
1248                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1249                         return null;
1250                 }
1251                 PostBuilder postBuilder = database.newPostBuilder();
1252                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1253                 if (recipient.isPresent()) {
1254                         postBuilder.to(recipient.get().getId());
1255                 }
1256                 final Post post = postBuilder.build();
1257                 database.storePost(post);
1258                 eventBus.post(new NewPostFoundEvent(post));
1259                 sone.addPost(post);
1260                 touchConfiguration();
1261                 localElementTicker.schedule(new MarkPostKnown(post), 10, TimeUnit.SECONDS);
1262                 return post;
1263         }
1264
1265         /**
1266          * Deletes the given post.
1267          *
1268          * @param post
1269          *            The post to delete
1270          */
1271         public void deletePost(Post post) {
1272                 if (!post.getSone().isLocal()) {
1273                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1274                         return;
1275                 }
1276                 database.removePost(post);
1277                 eventBus.post(new PostRemovedEvent(post));
1278                 markPostKnown(post);
1279                 touchConfiguration();
1280         }
1281
1282         /**
1283          * Marks the given post as known, if it is currently not a known post
1284          * (according to {@link Post#isKnown()}).
1285          *
1286          * @param post
1287          *            The post to mark as known
1288          */
1289         public void markPostKnown(Post post) {
1290                 post.setKnown(true);
1291                 eventBus.post(new MarkPostKnownEvent(post));
1292                 touchConfiguration();
1293                 for (PostReply reply : getReplies(post.getId())) {
1294                         markReplyKnown(reply);
1295                 }
1296         }
1297
1298         /**
1299          * Bookmarks the post with the given ID.
1300          *
1301          * @param id
1302          *            The ID of the post to bookmark
1303          */
1304         public void bookmarkPost(String id) {
1305                 synchronized (bookmarkedPosts) {
1306                         bookmarkedPosts.add(id);
1307                 }
1308         }
1309
1310         /**
1311          * Removes the given post from the bookmarks.
1312          *
1313          * @param post
1314          *            The post to unbookmark
1315          */
1316         public void unbookmark(Post post) {
1317                 unbookmarkPost(post.getId());
1318         }
1319
1320         /**
1321          * Removes the post with the given ID from the bookmarks.
1322          *
1323          * @param id
1324          *            The ID of the post to unbookmark
1325          */
1326         public void unbookmarkPost(String id) {
1327                 synchronized (bookmarkedPosts) {
1328                         bookmarkedPosts.remove(id);
1329                 }
1330         }
1331
1332         /**
1333          * Creates a new reply.
1334          *
1335          * @param sone
1336          *            The Sone that creates the reply
1337          * @param post
1338          *            The post that this reply refers to
1339          * @param text
1340          *            The text of the reply
1341          * @return The created reply
1342          */
1343         public PostReply createReply(Sone sone, Post post, String text) {
1344                 checkNotNull(text, "text must not be null");
1345                 checkArgument(text.trim().length() > 0, "text must not be empty");
1346                 if (!sone.isLocal()) {
1347                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1348                         return null;
1349                 }
1350                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1351                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1352                 final PostReply reply = postReplyBuilder.build();
1353                 database.storePostReply(reply);
1354                 eventBus.post(new NewPostReplyFoundEvent(reply));
1355                 sone.addReply(reply);
1356                 touchConfiguration();
1357                 localElementTicker.schedule(new MarkReplyKnown(reply), 10, TimeUnit.SECONDS);
1358                 return reply;
1359         }
1360
1361         /**
1362          * Deletes the given reply.
1363          *
1364          * @param reply
1365          *            The reply to delete
1366          */
1367         public void deleteReply(PostReply reply) {
1368                 Sone sone = reply.getSone();
1369                 if (!sone.isLocal()) {
1370                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1371                         return;
1372                 }
1373                 database.removePostReply(reply);
1374                 markReplyKnown(reply);
1375                 sone.removeReply(reply);
1376                 touchConfiguration();
1377         }
1378
1379         /**
1380          * Marks the given reply as known, if it is currently not a known reply
1381          * (according to {@link Reply#isKnown()}).
1382          *
1383          * @param reply
1384          *            The reply to mark as known
1385          */
1386         public void markReplyKnown(PostReply reply) {
1387                 boolean previouslyKnown = reply.isKnown();
1388                 reply.setKnown(true);
1389                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1390                 if (!previouslyKnown) {
1391                         touchConfiguration();
1392                 }
1393         }
1394
1395         /**
1396          * Creates a new album for the given Sone.
1397          *
1398          * @param sone
1399          *            The Sone to create the album for
1400          * @param parent
1401          *            The parent of the album (may be {@code null} to create a
1402          *            top-level album)
1403          * @return The new album
1404          */
1405         public Album createAlbum(Sone sone, Album parent) {
1406                 Album album = database.newAlbumBuilder().randomId().by(sone).build();
1407                 database.storeAlbum(album);
1408                 parent.addAlbum(album);
1409                 return album;
1410         }
1411
1412         /**
1413          * Deletes the given album. The owner of the album has to be a local Sone,
1414          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1415          *
1416          * @param album
1417          *            The album to remove
1418          */
1419         public void deleteAlbum(Album album) {
1420                 checkNotNull(album, "album must not be null");
1421                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1422                 if (!album.isEmpty()) {
1423                         return;
1424                 }
1425                 album.getParent().removeAlbum(album);
1426                 database.removeAlbum(album);
1427                 touchConfiguration();
1428         }
1429
1430         /**
1431          * Creates a new image.
1432          *
1433          * @param sone
1434          *            The Sone creating the image
1435          * @param album
1436          *            The album the image will be inserted into
1437          * @param temporaryImage
1438          *            The temporary image to create the image from
1439          * @return The newly created image
1440          */
1441         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1442                 checkNotNull(sone, "sone must not be null");
1443                 checkNotNull(album, "album must not be null");
1444                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1445                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1446                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1447                 Image image = database.newImageBuilder().withId(temporaryImage.getId()).build().modify().setSone(sone).setCreationTime(System.currentTimeMillis()).update();
1448                 album.addImage(image);
1449                 database.storeImage(image);
1450                 imageInserter.insertImage(temporaryImage, image);
1451                 return image;
1452         }
1453
1454         /**
1455          * Deletes the given image. This method will also delete a matching
1456          * temporary image.
1457          *
1458          * @see #deleteTemporaryImage(String)
1459          * @param image
1460          *            The image to delete
1461          */
1462         public void deleteImage(Image image) {
1463                 checkNotNull(image, "image must not be null");
1464                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1465                 deleteTemporaryImage(image.getId());
1466                 image.getAlbum().removeImage(image);
1467                 database.removeImage(image);
1468                 touchConfiguration();
1469         }
1470
1471         /**
1472          * Creates a new temporary image.
1473          *
1474          * @param mimeType
1475          *            The MIME type of the temporary image
1476          * @param imageData
1477          *            The encoded data of the image
1478          * @return The temporary image
1479          */
1480         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1481                 TemporaryImage temporaryImage = new TemporaryImage();
1482                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1483                 synchronized (temporaryImages) {
1484                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1485                 }
1486                 return temporaryImage;
1487         }
1488
1489         /**
1490          * Deletes the temporary image with the given ID.
1491          *
1492          * @param imageId
1493          *            The ID of the temporary image to delete
1494          */
1495         public void deleteTemporaryImage(String imageId) {
1496                 checkNotNull(imageId, "imageId must not be null");
1497                 synchronized (temporaryImages) {
1498                         temporaryImages.remove(imageId);
1499                 }
1500                 Image image = getImage(imageId, false);
1501                 if (image != null) {
1502                         imageInserter.cancelImageInsert(image);
1503                 }
1504         }
1505
1506         /**
1507          * Notifies the core that the configuration, either of the core or of a
1508          * single local Sone, has changed, and that the configuration should be
1509          * saved.
1510          */
1511         public void touchConfiguration() {
1512                 lastConfigurationUpdate = System.currentTimeMillis();
1513         }
1514
1515         //
1516         // SERVICE METHODS
1517         //
1518
1519         /**
1520          * Starts the core.
1521          */
1522         @Override
1523         public void serviceStart() {
1524                 loadConfiguration();
1525                 updateChecker.start();
1526                 identityManager.start();
1527                 webOfTrustUpdater.init();
1528                 webOfTrustUpdater.start();
1529                 database.start();
1530         }
1531
1532         /**
1533          * {@inheritDoc}
1534          */
1535         @Override
1536         public void serviceRun() {
1537                 long lastSaved = System.currentTimeMillis();
1538                 while (!shouldStop()) {
1539                         sleep(1000);
1540                         long now = System.currentTimeMillis();
1541                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1542                                 for (Sone localSone : getLocalSones()) {
1543                                         saveSone(localSone);
1544                                 }
1545                                 saveConfiguration();
1546                                 lastSaved = now;
1547                         }
1548                 }
1549         }
1550
1551         /**
1552          * Stops the core.
1553          */
1554         @Override
1555         public void serviceStop() {
1556                 localElementTicker.shutdownNow();
1557                 synchronized (sones) {
1558                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1559                                 soneInserter.getValue().stop();
1560                                 saveSone(getLocalSone(soneInserter.getKey().getId(), false));
1561                         }
1562                 }
1563                 saveConfiguration();
1564                 database.stop();
1565                 webOfTrustUpdater.stop();
1566                 updateChecker.stop();
1567                 soneDownloader.stop();
1568                 soneDownloaders.shutdown();
1569                 identityManager.stop();
1570         }
1571
1572         //
1573         // PRIVATE METHODS
1574         //
1575
1576         /**
1577          * Saves the given Sone. This will persist all local settings for the given
1578          * Sone, such as the friends list and similar, private options.
1579          *
1580          * @param sone
1581          *            The Sone to save
1582          */
1583         private synchronized void saveSone(Sone sone) {
1584                 if (!sone.isLocal()) {
1585                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1586                         return;
1587                 }
1588                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1589                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1590                         return;
1591                 }
1592
1593                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1594                 try {
1595                         /* save Sone into configuration. */
1596                         String sonePrefix = "Sone/" + sone.getId();
1597                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1598                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1599
1600                         /* save profile. */
1601                         Profile profile = sone.getProfile();
1602                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1603                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1604                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1605                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1606                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1607                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1608                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1609
1610                         /* save profile fields. */
1611                         int fieldCounter = 0;
1612                         for (Field profileField : profile.getFields()) {
1613                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1614                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1615                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1616                         }
1617                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1618
1619                         /* save posts. */
1620                         int postCounter = 0;
1621                         for (Post post : sone.getPosts()) {
1622                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1623                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1624                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1625                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1626                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1627                         }
1628                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1629
1630                         /* save replies. */
1631                         int replyCounter = 0;
1632                         for (PostReply reply : sone.getReplies()) {
1633                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1634                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1635                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1636                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1637                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1638                         }
1639                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1640
1641                         /* save post likes. */
1642                         int postLikeCounter = 0;
1643                         for (String postId : sone.getLikedPostIds()) {
1644                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1645                         }
1646                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1647
1648                         /* save reply likes. */
1649                         int replyLikeCounter = 0;
1650                         for (String replyId : sone.getLikedReplyIds()) {
1651                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1652                         }
1653                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1654
1655                         /* save friends. */
1656                         int friendCounter = 0;
1657                         for (String friendId : sone.getFriends()) {
1658                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1659                         }
1660                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1661
1662                         /* save albums. first, collect in a flat structure, top-level first. */
1663                         List<Album> albums = FluentIterable.from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1664
1665                         int albumCounter = 0;
1666                         for (Album album : albums) {
1667                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1668                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1669                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1670                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1671                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1672                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1673                         }
1674                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1675
1676                         /* save images. */
1677                         int imageCounter = 0;
1678                         for (Album album : albums) {
1679                                 for (Image image : album.getImages()) {
1680                                         if (!image.isInserted()) {
1681                                                 continue;
1682                                         }
1683                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1684                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1685                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1686                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1687                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1688                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1689                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1690                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1691                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1692                                 }
1693                         }
1694                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1695
1696                         /* save options. */
1697                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().isAutoFollow());
1698                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().isSoneInsertNotificationEnabled());
1699                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().isShowNewSoneNotifications());
1700                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().isShowNewPostNotifications());
1701                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().isShowNewReplyNotifications());
1702                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().getShowCustomAvatars().name());
1703
1704                         configuration.save();
1705
1706                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1707
1708                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1709                 } catch (ConfigurationException ce1) {
1710                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1711                 }
1712         }
1713
1714         /**
1715          * Saves the current options.
1716          */
1717         private void saveConfiguration() {
1718                 synchronized (configuration) {
1719                         if (storingConfiguration) {
1720                                 logger.log(Level.FINE, "Already storing configuration…");
1721                                 return;
1722                         }
1723                         storingConfiguration = true;
1724                 }
1725
1726                 /* store the options first. */
1727                 try {
1728                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1729                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1730                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1731                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1732                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1733                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1734                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1735                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1736                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1737                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1738                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1739                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1740
1741                         /* save known Sones. */
1742                         int soneCounter = 0;
1743                         synchronized (knownSones) {
1744                                 for (String knownSoneId : knownSones) {
1745                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1746                                 }
1747                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1748                         }
1749
1750                         /* save Sone following times. */
1751                         soneCounter = 0;
1752                         synchronized (soneFollowingTimes) {
1753                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1754                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1755                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1756                                         ++soneCounter;
1757                                 }
1758                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1759                         }
1760
1761                         /* save known posts. */
1762                         database.save();
1763
1764                         /* save bookmarked posts. */
1765                         int bookmarkedPostCounter = 0;
1766                         synchronized (bookmarkedPosts) {
1767                                 for (String bookmarkedPostId : bookmarkedPosts) {
1768                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1769                                 }
1770                         }
1771                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1772
1773                         /* now save it. */
1774                         configuration.save();
1775
1776                 } catch (ConfigurationException ce1) {
1777                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1778                 } catch (DatabaseException de1) {
1779                         logger.log(Level.SEVERE, "Could not save database!", de1);
1780                 } finally {
1781                         synchronized (configuration) {
1782                                 storingConfiguration = false;
1783                         }
1784                 }
1785         }
1786
1787         /**
1788          * Loads the configuration.
1789          */
1790         private void loadConfiguration() {
1791                 /* create options. */
1792                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new SetInsertionDelay()));
1793                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1794                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1795                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1796                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1797                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1798                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1799                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1800                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1801                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, fcpInterface.new SetActive()));
1802                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, fcpInterface.new SetFullAccessRequired()));
1803
1804                 loadConfigurationValue("InsertionDelay");
1805                 loadConfigurationValue("PostsPerPage");
1806                 loadConfigurationValue("ImagesPerPage");
1807                 loadConfigurationValue("CharactersPerPost");
1808                 loadConfigurationValue("PostCutOffLength");
1809                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1810                 loadConfigurationValue("PositiveTrust");
1811                 loadConfigurationValue("NegativeTrust");
1812                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1813                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1814                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1815
1816                 /* load known Sones. */
1817                 int soneCounter = 0;
1818                 while (true) {
1819                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1820                         if (knownSoneId == null) {
1821                                 break;
1822                         }
1823                         synchronized (knownSones) {
1824                                 knownSones.add(knownSoneId);
1825                         }
1826                 }
1827
1828                 /* load Sone following times. */
1829                 soneCounter = 0;
1830                 while (true) {
1831                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
1832                         if (soneId == null) {
1833                                 break;
1834                         }
1835                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
1836                         synchronized (soneFollowingTimes) {
1837                                 soneFollowingTimes.put(soneId, time);
1838                         }
1839                         ++soneCounter;
1840                 }
1841
1842                 /* load bookmarked posts. */
1843                 int bookmarkedPostCounter = 0;
1844                 while (true) {
1845                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1846                         if (bookmarkedPostId == null) {
1847                                 break;
1848                         }
1849                         synchronized (bookmarkedPosts) {
1850                                 bookmarkedPosts.add(bookmarkedPostId);
1851                         }
1852                 }
1853
1854         }
1855
1856         /**
1857          * Loads an {@link Integer} configuration value for the option with the
1858          * given name, logging validation failures.
1859          *
1860          * @param optionName
1861          *            The name of the option to load
1862          */
1863         private void loadConfigurationValue(String optionName) {
1864                 try {
1865                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1866                 } catch (IllegalArgumentException iae1) {
1867                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
1868                 }
1869         }
1870
1871         /**
1872          * Notifies the core that a new {@link OwnIdentity} was added.
1873          *
1874          * @param ownIdentityAddedEvent
1875          *            The event
1876          */
1877         @Subscribe
1878         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1879                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1880                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1881                 if (ownIdentity.hasContext("Sone")) {
1882                         addLocalSone(ownIdentity);
1883                 }
1884         }
1885
1886         /**
1887          * Notifies the core that an {@link OwnIdentity} was removed.
1888          *
1889          * @param ownIdentityRemovedEvent
1890          *            The event
1891          */
1892         @Subscribe
1893         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1894                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1895                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
1896                 trustedIdentities.removeAll(ownIdentity);
1897         }
1898
1899         /**
1900          * Notifies the core that a new {@link Identity} was added.
1901          *
1902          * @param identityAddedEvent
1903          *            The event
1904          */
1905         @Subscribe
1906         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
1907                 Identity identity = identityAddedEvent.identity();
1908                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
1909                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
1910                 addRemoteSone(identity);
1911         }
1912
1913         /**
1914          * Notifies the core that an {@link Identity} was updated.
1915          *
1916          * @param identityUpdatedEvent
1917          *            The event
1918          */
1919         @Subscribe
1920         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
1921                 Identity identity = identityUpdatedEvent.identity();
1922                 final Sone sone = getRemoteSone(identity.getId(), false);
1923                 if (sone.isLocal()) {
1924                         return;
1925                 }
1926                 sone.setIdentity(identity);
1927                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
1928                 soneDownloader.addSone(sone);
1929                 soneDownloaders.execute(soneDownloader.fetchSoneAction(sone));
1930         }
1931
1932         /**
1933          * Notifies the core that an {@link Identity} was removed.
1934          *
1935          * @param identityRemovedEvent
1936          *            The event
1937          */
1938         @Subscribe
1939         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
1940                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
1941                 Identity identity = identityRemovedEvent.identity();
1942                 trustedIdentities.remove(ownIdentity, identity);
1943                 boolean foundIdentity = false;
1944                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
1945                         if (trustedIdentity.getKey().equals(ownIdentity)) {
1946                                 continue;
1947                         }
1948                         if (trustedIdentity.getValue().contains(identity)) {
1949                                 foundIdentity = true;
1950                         }
1951                 }
1952                 if (foundIdentity) {
1953                         /* some local identity still trusts this identity, don’t remove. */
1954                         return;
1955                 }
1956                 Optional<Sone> sone = getSone(identity.getId());
1957                 if (!sone.isPresent()) {
1958                         /* TODO - we don’t have the Sone anymore. should this happen? */
1959                         return;
1960                 }
1961                 database.removePosts(sone.get());
1962                 for (Post post : sone.get().getPosts()) {
1963                         eventBus.post(new PostRemovedEvent(post));
1964                 }
1965                 database.removePostReplies(sone.get());
1966                 for (PostReply reply : sone.get().getReplies()) {
1967                         eventBus.post(new PostReplyRemovedEvent(reply));
1968                 }
1969                 synchronized (sones) {
1970                         sones.remove(identity.getId());
1971                 }
1972                 eventBus.post(new SoneRemovedEvent(sone.get()));
1973         }
1974
1975         /**
1976          * Deletes the temporary image.
1977          *
1978          * @param imageInsertFinishedEvent
1979          *            The event
1980          */
1981         @Subscribe
1982         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
1983                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
1984                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
1985                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
1986                 touchConfiguration();
1987         }
1988
1989         @VisibleForTesting
1990         class MarkPostKnown implements Runnable {
1991
1992                 private final Post post;
1993
1994                 public MarkPostKnown(Post post) {
1995                         this.post = post;
1996                 }
1997
1998                 @Override
1999                 public void run() {
2000                         markPostKnown(post);
2001                 }
2002
2003         }
2004
2005         @VisibleForTesting
2006         class MarkReplyKnown implements Runnable {
2007
2008                 private final PostReply postReply;
2009
2010                 public MarkReplyKnown(PostReply postReply) {
2011                         this.postReply = postReply;
2012                 }
2013
2014                 @Override
2015                 public void run() {
2016                         markReplyKnown(postReply);
2017                 }
2018
2019         }
2020
2021 }