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

   1 /*
   2  * Sone - Core.java - Copyright © 2010 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28 import java.util.logging.Level;
  29 import java.util.logging.Logger;
  30
  31 import net.pterodactylus.sone.core.Options.DefaultOption;
  32 import net.pterodactylus.sone.core.Options.Option;
  33 import net.pterodactylus.sone.core.Options.OptionWatcher;
  34 import net.pterodactylus.sone.data.Client;
  35 import net.pterodactylus.sone.data.Post;
  36 import net.pterodactylus.sone.data.Profile;
  37 import net.pterodactylus.sone.data.Reply;
  38 import net.pterodactylus.sone.data.Sone;
  39 import net.pterodactylus.sone.freenet.wot.Identity;
  40 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  41 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  42 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  43 import net.pterodactylus.sone.main.SonePlugin;
  44 import net.pterodactylus.util.config.Configuration;
  45 import net.pterodactylus.util.config.ConfigurationException;
  46 import net.pterodactylus.util.logging.Logging;
  47 import net.pterodactylus.util.number.Numbers;
  48 import freenet.keys.FreenetURI;
  49
  50 /**
  51  * The Sone core.
  52  *
  53  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  54  */
  55 public class Core implements IdentityListener {
  56
  57         /**
  58          * Enumeration for the possible states of a {@link Sone}.
  59          *
  60          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  61          */
  62         public enum SoneStatus {
  63
  64                 /** The Sone is unknown, i.e. not yet downloaded. */
  65                 unknown,
  66
  67                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  68                 idle,
  69
  70                 /** The Sone is currently being inserted. */
  71                 inserting,
  72
  73                 /** The Sone is currently being downloaded. */
  74                 downloading,
  75         }
  76
  77         /** The logger. */
  78         private static final Logger logger = Logging.getLogger(Core.class);
  79
  80         /** The options. */
  81         private final Options options = new Options();
  82
  83         /** The core listener manager. */
  84         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
  85
  86         /** The configuration. */
  87         private final Configuration configuration;
  88
  89         /** The identity manager. */
  90         private final IdentityManager identityManager;
  91
  92         /** Interface to freenet. */
  93         private final FreenetInterface freenetInterface;
  94
  95         /** The Sone downloader. */
  96         private final SoneDownloader soneDownloader;
  97
  98         /** Whether the core has been stopped. */
  99         private volatile boolean stopped;
 100
 101         /** The Sones’ statuses. */
 102         /* synchronize access on itself. */
 103         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
 104
 105         /** Sone inserters. */
 106         /* synchronize access on this on localSones. */
 107         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 108
 109         /** All local Sones. */
 110         /* synchronize access on this on itself. */
 111         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 112
 113         /** All remote Sones. */
 114         /* synchronize access on this on itself. */
 115         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 116
 117         /** All new Sones. */
 118         private Set<String> newSones = new HashSet<String>();
 119
 120         /** All known Sones. */
 121         /* synchronize access on {@link #newSones}. */
 122         private Set<String> knownSones = new HashSet<String>();
 123
 124         /** All posts. */
 125         private Map<String, Post> posts = new HashMap<String, Post>();
 126
 127         /** All new posts. */
 128         private Set<String> newPosts = new HashSet<String>();
 129
 130         /** All known posts. */
 131         /* synchronize access on {@link #newPosts}. */
 132         private Set<String> knownPosts = new HashSet<String>();
 133
 134         /** All replies. */
 135         private Map<String, Reply> replies = new HashMap<String, Reply>();
 136
 137         /** All new replies. */
 138         private Set<String> newReplies = new HashSet<String>();
 139
 140         /** All known replies. */
 141         private Set<String> knownReplies = new HashSet<String>();
 142
 143         /**
 144          * Creates a new core.
 145          *
 146          * @param configuration
 147          *            The configuration of the core
 148          * @param freenetInterface
 149          *            The freenet interface
 150          * @param identityManager
 151          *            The identity manager
 152          */
 153         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 154                 this.configuration = configuration;
 155                 this.freenetInterface = freenetInterface;
 156                 this.identityManager = identityManager;
 157                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 158         }
 159
 160         //
 161         // LISTENER MANAGEMENT
 162         //
 163
 164         /**
 165          * Adds a new core listener.
 166          *
 167          * @param coreListener
 168          *            The listener to add
 169          */
 170         public void addCoreListener(CoreListener coreListener) {
 171                 coreListenerManager.addListener(coreListener);
 172         }
 173
 174         /**
 175          * Removes a core listener.
 176          *
 177          * @param coreListener
 178          *            The listener to remove
 179          */
 180         public void removeCoreListener(CoreListener coreListener) {
 181                 coreListenerManager.removeListener(coreListener);
 182         }
 183
 184         //
 185         // ACCESSORS
 186         //
 187
 188         /**
 189          * Returns the options used by the core.
 190          *
 191          * @return The options of the core
 192          */
 193         public Options getOptions() {
 194                 return options;
 195         }
 196
 197         /**
 198          * Returns whether the “Sone rescue mode” is currently activated.
 199          *
 200          * @return {@code true} if the “Sone rescue mode” is currently activated,
 201          *         {@code false} if it is not
 202          */
 203         public boolean isSoneRescueMode() {
 204                 return options.getBooleanOption("SoneRescueMode").get();
 205         }
 206
 207         /**
 208          * Returns the identity manager used by the core.
 209          *
 210          * @return The identity manager
 211          */
 212         public IdentityManager getIdentityManager() {
 213                 return identityManager;
 214         }
 215
 216         /**
 217          * Returns the status of the given Sone.
 218          *
 219          * @param sone
 220          *            The Sone to get the status for
 221          * @return The status of the Sone
 222          */
 223         public SoneStatus getSoneStatus(Sone sone) {
 224                 synchronized (soneStatuses) {
 225                         return soneStatuses.get(sone);
 226                 }
 227         }
 228
 229         /**
 230          * Sets the status of the given Sone.
 231          *
 232          * @param sone
 233          *            The Sone to set the status of
 234          * @param soneStatus
 235          *            The status to set
 236          */
 237         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 238                 synchronized (soneStatuses) {
 239                         soneStatuses.put(sone, soneStatus);
 240                 }
 241         }
 242
 243         /**
 244          * Returns all Sones, remote and local.
 245          *
 246          * @return All Sones
 247          */
 248         public Set<Sone> getSones() {
 249                 Set<Sone> allSones = new HashSet<Sone>();
 250                 allSones.addAll(getLocalSones());
 251                 allSones.addAll(getRemoteSones());
 252                 return allSones;
 253         }
 254
 255         /**
 256          * Returns the Sone with the given ID, regardless whether it’s local or
 257          * remote.
 258          *
 259          * @param id
 260          *            The ID of the Sone to get
 261          * @return The Sone with the given ID, or {@code null} if there is no such
 262          *         Sone
 263          */
 264         public Sone getSone(String id) {
 265                 return getSone(id, true);
 266         }
 267
 268         /**
 269          * Returns the Sone with the given ID, regardless whether it’s local or
 270          * remote.
 271          *
 272          * @param id
 273          *            The ID of the Sone to get
 274          * @param create
 275          *            {@code true} to create a new Sone if none exists,
 276          *            {@code false} to return {@code null} if a Sone with the given
 277          *            ID does not exist
 278          * @return The Sone with the given ID, or {@code null} if there is no such
 279          *         Sone
 280          */
 281         public Sone getSone(String id, boolean create) {
 282                 if (isLocalSone(id)) {
 283                         return getLocalSone(id);
 284                 }
 285                 return getRemoteSone(id, create);
 286         }
 287
 288         /**
 289          * Checks whether the core knows a Sone with the given ID.
 290          *
 291          * @param id
 292          *            The ID of the Sone
 293          * @return {@code true} if there is a Sone with the given ID, {@code false}
 294          *         otherwise
 295          */
 296         public boolean hasSone(String id) {
 297                 return isLocalSone(id) || isRemoteSone(id);
 298         }
 299
 300         /**
 301          * Returns whether the given Sone is a local Sone.
 302          *
 303          * @param sone
 304          *            The Sone to check for its locality
 305          * @return {@code true} if the given Sone is local, {@code false} otherwise
 306          */
 307         public boolean isLocalSone(Sone sone) {
 308                 synchronized (localSones) {
 309                         return localSones.containsKey(sone.getId());
 310                 }
 311         }
 312
 313         /**
 314          * Returns whether the given ID is the ID of a local Sone.
 315          *
 316          * @param id
 317          *            The Sone ID to check for its locality
 318          * @return {@code true} if the given ID is a local Sone, {@code false}
 319          *         otherwise
 320          */
 321         public boolean isLocalSone(String id) {
 322                 synchronized (localSones) {
 323                         return localSones.containsKey(id);
 324                 }
 325         }
 326
 327         /**
 328          * Returns all local Sones.
 329          *
 330          * @return All local Sones
 331          */
 332         public Set<Sone> getLocalSones() {
 333                 synchronized (localSones) {
 334                         return new HashSet<Sone>(localSones.values());
 335                 }
 336         }
 337
 338         /**
 339          * Returns the local Sone with the given ID.
 340          *
 341          * @param id
 342          *            The ID of the Sone to get
 343          * @return The Sone with the given ID
 344          */
 345         public Sone getLocalSone(String id) {
 346                 return getLocalSone(id, true);
 347         }
 348
 349         /**
 350          * Returns the local Sone with the given ID, optionally creating a new Sone.
 351          *
 352          * @param id
 353          *            The ID of the Sone
 354          * @param create
 355          *            {@code true} to create a new Sone if none exists,
 356          *            {@code false} to return null if none exists
 357          * @return The Sone with the given ID, or {@code null}
 358          */
 359         public Sone getLocalSone(String id, boolean create) {
 360                 synchronized (localSones) {
 361                         Sone sone = localSones.get(id);
 362                         if ((sone == null) && create) {
 363                                 sone = new Sone(id);
 364                                 localSones.put(id, sone);
 365                         }
 366                         return sone;
 367                 }
 368         }
 369
 370         /**
 371          * Returns all remote Sones.
 372          *
 373          * @return All remote Sones
 374          */
 375         public Set<Sone> getRemoteSones() {
 376                 synchronized (remoteSones) {
 377                         return new HashSet<Sone>(remoteSones.values());
 378                 }
 379         }
 380
 381         /**
 382          * Returns the remote Sone with the given ID.
 383          *
 384          * @param id
 385          *            The ID of the remote Sone to get
 386          * @return The Sone with the given ID
 387          */
 388         public Sone getRemoteSone(String id) {
 389                 return getRemoteSone(id, true);
 390         }
 391
 392         /**
 393          * Returns the remote Sone with the given ID.
 394          *
 395          * @param id
 396          *            The ID of the remote Sone to get
 397          * @param create
 398          *            {@code true} to always create a Sone, {@code false} to return
 399          *            {@code null} if no Sone with the given ID exists
 400          * @return The Sone with the given ID
 401          */
 402         public Sone getRemoteSone(String id, boolean create) {
 403                 synchronized (remoteSones) {
 404                         Sone sone = remoteSones.get(id);
 405                         if ((sone == null) && create) {
 406                                 sone = new Sone(id);
 407                                 remoteSones.put(id, sone);
 408                         }
 409                         return sone;
 410                 }
 411         }
 412
 413         /**
 414          * Returns whether the given Sone is a remote Sone.
 415          *
 416          * @param sone
 417          *            The Sone to check
 418          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 419          *         otherwise
 420          */
 421         public boolean isRemoteSone(Sone sone) {
 422                 synchronized (remoteSones) {
 423                         return remoteSones.containsKey(sone.getId());
 424                 }
 425         }
 426
 427         /**
 428          * Returns whether the Sone with the given ID is a remote Sone.
 429          *
 430          * @param id
 431          *            The ID of the Sone to check
 432          * @return {@code true} if the Sone with the given ID is a remote Sone,
 433          *         {@code false} otherwise
 434          */
 435         public boolean isRemoteSone(String id) {
 436                 synchronized (remoteSones) {
 437                         return remoteSones.containsKey(id);
 438                 }
 439         }
 440
 441         /**
 442          * Returns whether the given Sone is a new Sone. After this check, the Sone
 443          * is marked as known, i.e. a second call with the same parameters will
 444          * always yield {@code false}.
 445          *
 446          * @param sone
 447          *            The sone to check for
 448          * @return {@code true} if the given Sone is new, false otherwise
 449          */
 450         public boolean isNewSone(Sone sone) {
 451                 synchronized (newSones) {
 452                         boolean isNew = !knownSones.contains(sone.getId()) && newSones.remove(sone.getId());
 453                         knownSones.add(sone.getId());
 454                         if (isNew) {
 455                                 coreListenerManager.fireMarkSoneKnown(sone);
 456                         }
 457                         return isNew;
 458                 }
 459         }
 460
 461         /**
 462          * Returns whether the given Sone has been modified.
 463          *
 464          * @param sone
 465          *            The Sone to check for modifications
 466          * @return {@code true} if a modification has been detected in the Sone,
 467          *         {@code false} otherwise
 468          */
 469         public boolean isModifiedSone(Sone sone) {
 470                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 471         }
 472
 473         /**
 474          * Returns the post with the given ID.
 475          *
 476          * @param postId
 477          *            The ID of the post to get
 478          * @return The post, or {@code null} if there is no such post
 479          */
 480         public Post getPost(String postId) {
 481                 synchronized (posts) {
 482                         Post post = posts.get(postId);
 483                         if (post == null) {
 484                                 post = new Post(postId);
 485                                 posts.put(postId, post);
 486                         }
 487                         return post;
 488                 }
 489         }
 490
 491         /**
 492          * Returns whether the given post ID is new. After this method returns it is
 493          * marked a known post ID.
 494          *
 495          * @param postId
 496          *            The post ID
 497          * @return {@code true} if the post is considered to be new, {@code false}
 498          *         otherwise
 499          */
 500         public boolean isNewPost(String postId) {
 501                 synchronized (newPosts) {
 502                         boolean isNew = !knownPosts.contains(postId) && newPosts.remove(postId);
 503                         knownPosts.add(postId);
 504                         if (isNew) {
 505                                 coreListenerManager.fireMarkPostKnown(getPost(postId));
 506                         }
 507                         return isNew;
 508                 }
 509         }
 510
 511         /**
 512          * Returns the reply with the given ID.
 513          *
 514          * @param replyId
 515          *            The ID of the reply to get
 516          * @return The reply, or {@code null} if there is no such reply
 517          */
 518         public Reply getReply(String replyId) {
 519                 synchronized (replies) {
 520                         Reply reply = replies.get(replyId);
 521                         if (reply == null) {
 522                                 reply = new Reply(replyId);
 523                                 replies.put(replyId, reply);
 524                         }
 525                         return reply;
 526                 }
 527         }
 528
 529         /**
 530          * Returns all replies for the given post, order ascending by time.
 531          *
 532          * @param post
 533          *            The post to get all replies for
 534          * @return All replies for the given post
 535          */
 536         public List<Reply> getReplies(Post post) {
 537                 Set<Sone> sones = getSones();
 538                 List<Reply> replies = new ArrayList<Reply>();
 539                 for (Sone sone : sones) {
 540                         for (Reply reply : sone.getReplies()) {
 541                                 if (reply.getPost().equals(post)) {
 542                                         replies.add(reply);
 543                                 }
 544                         }
 545                 }
 546                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 547                 return replies;
 548         }
 549
 550         /**
 551          * Returns whether the reply with the given ID is new.
 552          *
 553          * @param replyId
 554          *            The ID of the reply to check
 555          * @return {@code true} if the reply is considered to be new, {@code false}
 556          *         otherwise
 557          */
 558         public boolean isNewReply(String replyId) {
 559                 synchronized (newReplies) {
 560                         boolean isNew = !knownReplies.contains(replyId) && newReplies.remove(replyId);
 561                         knownReplies.add(replyId);
 562                         if (isNew) {
 563                                 coreListenerManager.fireMarkReplyKnown(getReply(replyId));
 564                         }
 565                         return isNew;
 566                 }
 567         }
 568
 569         /**
 570          * Returns all Sones that have liked the given post.
 571          *
 572          * @param post
 573          *            The post to get the liking Sones for
 574          * @return The Sones that like the given post
 575          */
 576         public Set<Sone> getLikes(Post post) {
 577                 Set<Sone> sones = new HashSet<Sone>();
 578                 for (Sone sone : getSones()) {
 579                         if (sone.getLikedPostIds().contains(post.getId())) {
 580                                 sones.add(sone);
 581                         }
 582                 }
 583                 return sones;
 584         }
 585
 586         /**
 587          * Returns all Sones that have liked the given reply.
 588          *
 589          * @param reply
 590          *            The reply to get the liking Sones for
 591          * @return The Sones that like the given reply
 592          */
 593         public Set<Sone> getLikes(Reply reply) {
 594                 Set<Sone> sones = new HashSet<Sone>();
 595                 for (Sone sone : getSones()) {
 596                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 597                                 sones.add(sone);
 598                         }
 599                 }
 600                 return sones;
 601         }
 602
 603         //
 604         // ACTIONS
 605         //
 606
 607         /**
 608          * Adds a local Sone from the given ID which has to be the ID of an own
 609          * identity.
 610          *
 611          * @param id
 612          *            The ID of an own identity to add a Sone for
 613          * @return The added (or already existing) Sone
 614          */
 615         public Sone addLocalSone(String id) {
 616                 synchronized (localSones) {
 617                         if (localSones.containsKey(id)) {
 618                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 619                                 return localSones.get(id);
 620                         }
 621                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 622                         if (ownIdentity == null) {
 623                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 624                                 return null;
 625                         }
 626                         return addLocalSone(ownIdentity);
 627                 }
 628         }
 629
 630         /**
 631          * Adds a local Sone from the given own identity.
 632          *
 633          * @param ownIdentity
 634          *            The own identity to create a Sone from
 635          * @return The added (or already existing) Sone
 636          */
 637         public Sone addLocalSone(OwnIdentity ownIdentity) {
 638                 if (ownIdentity == null) {
 639                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 640                         return null;
 641                 }
 642                 synchronized (localSones) {
 643                         final Sone sone;
 644                         try {
 645                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 646                         } catch (MalformedURLException mue1) {
 647                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 648                                 return null;
 649                         }
 650                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 651                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 652                         /* TODO - load posts ’n stuff */
 653                         localSones.put(ownIdentity.getId(), sone);
 654                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 655                         soneInserters.put(sone, soneInserter);
 656                         setSoneStatus(sone, SoneStatus.idle);
 657                         loadSone(sone);
 658                         if (!isSoneRescueMode()) {
 659                                 soneInserter.start();
 660                         }
 661                         new Thread(new Runnable() {
 662
 663                                 @Override
 664                                 @SuppressWarnings("synthetic-access")
 665                                 public void run() {
 666                                         if (!isSoneRescueMode()) {
 667                                                 soneDownloader.fetchSone(sone);
 668                                                 return;
 669                                         }
 670                                         logger.log(Level.INFO, "Trying to restore Sone from Freenet…");
 671                                         long edition = sone.getLatestEdition();
 672                                         while (!stopped && (edition >= 0) && isSoneRescueMode()) {
 673                                                 logger.log(Level.FINE, "Downloading edition " + edition + "…");
 674                                                 soneDownloader.fetchSone(sone, sone.getRequestUri().setKeyType("SSK").setDocName("Sone-" + edition));
 675                                                 --edition;
 676                                         }
 677                                         logger.log(Level.INFO, "Finished restoring Sone from Freenet, starting Inserter…");
 678                                         soneInserter.start();
 679                                 }
 680
 681                         }, "Sone Downloader").start();
 682                         return sone;
 683                 }
 684         }
 685
 686         /**
 687          * Creates a new Sone for the given own identity.
 688          *
 689          * @param ownIdentity
 690          *            The own identity to create a Sone for
 691          * @return The created Sone
 692          */
 693         public Sone createSone(OwnIdentity ownIdentity) {
 694                 identityManager.addContext(ownIdentity, "Sone");
 695                 Sone sone = addLocalSone(ownIdentity);
 696                 return sone;
 697         }
 698
 699         /**
 700          * Adds the Sone of the given identity.
 701          *
 702          * @param identity
 703          *            The identity whose Sone to add
 704          * @return The added or already existing Sone
 705          */
 706         public Sone addRemoteSone(Identity identity) {
 707                 if (identity == null) {
 708                         logger.log(Level.WARNING, "Given Identity is null!");
 709                         return null;
 710                 }
 711                 synchronized (remoteSones) {
 712                         final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
 713                         boolean newSone = sone.getRequestUri() == null;
 714                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 715                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 716                         if (newSone) {
 717                                 synchronized (newSones) {
 718                                         newSone = !knownSones.contains(sone.getId());
 719                                         if (newSone) {
 720                                                 newSones.add(sone.getId());
 721                                         }
 722                                 }
 723                                 if (newSone) {
 724                                         coreListenerManager.fireNewSoneFound(sone);
 725                                 }
 726                         }
 727                         remoteSones.put(identity.getId(), sone);
 728                         soneDownloader.addSone(sone);
 729                         setSoneStatus(sone, SoneStatus.unknown);
 730                         new Thread(new Runnable() {
 731
 732                                 @Override
 733                                 @SuppressWarnings("synthetic-access")
 734                                 public void run() {
 735                                         soneDownloader.fetchSone(sone);
 736                                 }
 737
 738                         }, "Sone Downloader").start();
 739                         return sone;
 740                 }
 741         }
 742
 743         /**
 744          * Updates the stores Sone with the given Sone.
 745          *
 746          * @param sone
 747          *            The updated Sone
 748          */
 749         public void updateSone(Sone sone) {
 750                 if (hasSone(sone.getId())) {
 751                         boolean soneRescueMode = isLocalSone(sone) && isSoneRescueMode();
 752                         Sone storedSone = getSone(sone.getId());
 753                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
 754                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
 755                                 return;
 756                         }
 757                         synchronized (posts) {
 758                                 if (!soneRescueMode) {
 759                                         for (Post post : storedSone.getPosts()) {
 760                                                 posts.remove(post.getId());
 761                                         }
 762                                 }
 763                                 synchronized (newPosts) {
 764                                         for (Post post : sone.getPosts()) {
 765                                                 if (!storedSone.getPosts().contains(post) && !knownPosts.contains(post.getId())) {
 766                                                         newPosts.add(post.getId());
 767                                                         coreListenerManager.fireNewPostFound(post);
 768                                                 }
 769                                                 posts.put(post.getId(), post);
 770                                         }
 771                                 }
 772                         }
 773                         synchronized (replies) {
 774                                 if (!soneRescueMode) {
 775                                         for (Reply reply : storedSone.getReplies()) {
 776                                                 replies.remove(reply.getId());
 777                                         }
 778                                 }
 779                                 synchronized (newReplies) {
 780                                         for (Reply reply : sone.getReplies()) {
 781                                                 if (!storedSone.getReplies().contains(reply) && !knownReplies.contains(reply.getId())) {
 782                                                         newReplies.add(reply.getId());
 783                                                         coreListenerManager.fireNewReplyFound(reply);
 784                                                 }
 785                                                 replies.put(reply.getId(), reply);
 786                                         }
 787                                 }
 788                         }
 789                         synchronized (storedSone) {
 790                                 storedSone.setTime(sone.getTime());
 791                                 storedSone.setClient(sone.getClient());
 792                                 storedSone.setProfile(sone.getProfile());
 793                                 if (soneRescueMode) {
 794                                         for (Post post : sone.getPosts()) {
 795                                                 storedSone.addPost(post);
 796                                         }
 797                                         for (Reply reply : sone.getReplies()) {
 798                                                 storedSone.addReply(reply);
 799                                         }
 800                                         for (String likedPostId : sone.getLikedPostIds()) {
 801                                                 storedSone.addLikedPostId(likedPostId);
 802                                         }
 803                                         for (String likedReplyId : sone.getLikedReplyIds()) {
 804                                                 storedSone.addLikedReplyId(likedReplyId);
 805                                         }
 806                                 } else {
 807                                         storedSone.setPosts(sone.getPosts());
 808                                         storedSone.setReplies(sone.getReplies());
 809                                         storedSone.setLikePostIds(sone.getLikedPostIds());
 810                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
 811                                 }
 812                                 storedSone.setLatestEdition(sone.getRequestUri().getEdition());
 813                         }
 814                 }
 815         }
 816
 817         /**
 818          * Deletes the given Sone. This will remove the Sone from the
 819          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
 820          * and remove the context from its identity.
 821          *
 822          * @param sone
 823          *            The Sone to delete
 824          */
 825         public void deleteSone(Sone sone) {
 826                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 827                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
 828                         return;
 829                 }
 830                 synchronized (localSones) {
 831                         if (!localSones.containsKey(sone.getId())) {
 832                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
 833                                 return;
 834                         }
 835                         localSones.remove(sone.getId());
 836                         soneInserters.remove(sone).stop();
 837                 }
 838                 identityManager.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 839                 identityManager.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 840                 try {
 841                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 842                 } catch (ConfigurationException ce1) {
 843                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 844                 }
 845         }
 846
 847         /**
 848          * Loads and updates the given Sone from the configuration. If any error is
 849          * encountered, loading is aborted and the given Sone is not changed.
 850          *
 851          * @param sone
 852          *            The Sone to load and update
 853          */
 854         public void loadSone(Sone sone) {
 855                 if (!isLocalSone(sone)) {
 856                         logger.log(Level.FINE, "Tried to load non-local Sone: %s", sone);
 857                         return;
 858                 }
 859
 860                 /* load Sone. */
 861                 String sonePrefix = "Sone/" + sone.getId();
 862                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
 863                 if (soneTime == null) {
 864                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
 865                         return;
 866                 }
 867                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
 868
 869                 /* load profile. */
 870                 Profile profile = new Profile();
 871                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
 872                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
 873                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
 874                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
 875                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
 876                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
 877
 878                 /* load posts. */
 879                 Set<Post> posts = new HashSet<Post>();
 880                 while (true) {
 881                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
 882                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
 883                         if (postId == null) {
 884                                 break;
 885                         }
 886                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
 887                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
 888                         if ((postTime == 0) || (postText == null)) {
 889                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
 890                                 return;
 891                         }
 892                         posts.add(getPost(postId).setSone(sone).setTime(postTime).setText(postText));
 893                 }
 894
 895                 /* load replies. */
 896                 Set<Reply> replies = new HashSet<Reply>();
 897                 while (true) {
 898                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
 899                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
 900                         if (replyId == null) {
 901                                 break;
 902                         }
 903                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
 904                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
 905                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
 906                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
 907                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
 908                                 return;
 909                         }
 910                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
 911                 }
 912
 913                 /* load post likes. */
 914                 Set<String> likedPostIds = new HashSet<String>();
 915                 while (true) {
 916                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
 917                         if (likedPostId == null) {
 918                                 break;
 919                         }
 920                         likedPostIds.add(likedPostId);
 921                 }
 922
 923                 /* load reply likes. */
 924                 Set<String> likedReplyIds = new HashSet<String>();
 925                 while (true) {
 926                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
 927                         if (likedReplyId == null) {
 928                                 break;
 929                         }
 930                         likedReplyIds.add(likedReplyId);
 931                 }
 932
 933                 /* load friends. */
 934                 Set<String> friends = new HashSet<String>();
 935                 while (true) {
 936                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
 937                         if (friendId == null) {
 938                                 break;
 939                         }
 940                         friends.add(friendId);
 941                 }
 942
 943                 /* if we’re still here, Sone was loaded successfully. */
 944                 synchronized (sone) {
 945                         sone.setTime(soneTime);
 946                         sone.setProfile(profile);
 947                         sone.setPosts(posts);
 948                         sone.setReplies(replies);
 949                         sone.setLikePostIds(likedPostIds);
 950                         sone.setLikeReplyIds(likedReplyIds);
 951                         sone.setFriends(friends);
 952                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
 953                 }
 954                 synchronized (newSones) {
 955                         for (String friend : friends) {
 956                                 knownSones.add(friend);
 957                         }
 958                 }
 959                 synchronized (newPosts) {
 960                         for (Post post : posts) {
 961                                 knownPosts.add(post.getId());
 962                         }
 963                 }
 964                 synchronized (newReplies) {
 965                         for (Reply reply : replies) {
 966                                 knownReplies.add(reply.getId());
 967                         }
 968                 }
 969         }
 970
 971         /**
 972          * Saves the given Sone. This will persist all local settings for the given
 973          * Sone, such as the friends list and similar, private options.
 974          *
 975          * @param sone
 976          *            The Sone to save
 977          */
 978         public void saveSone(Sone sone) {
 979                 if (!isLocalSone(sone)) {
 980                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
 981                         return;
 982                 }
 983                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 984                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
 985                         return;
 986                 }
 987
 988                 logger.log(Level.INFO, "Saving Sone: %s", sone);
 989                 identityManager.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
 990                 try {
 991                         /* save Sone into configuration. */
 992                         String sonePrefix = "Sone/" + sone.getId();
 993                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
 994                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
 995
 996                         /* save profile. */
 997                         Profile profile = sone.getProfile();
 998                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
 999                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1000                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1001                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1002                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1003                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1004
1005                         /* save posts. */
1006                         int postCounter = 0;
1007                         for (Post post : sone.getPosts()) {
1008                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1009                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1010                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1011                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1012                         }
1013                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1014
1015                         /* save replies. */
1016                         int replyCounter = 0;
1017                         for (Reply reply : sone.getReplies()) {
1018                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1019                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1020                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1021                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1022                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1023                         }
1024                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1025
1026                         /* save post likes. */
1027                         int postLikeCounter = 0;
1028                         for (String postId : sone.getLikedPostIds()) {
1029                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1030                         }
1031                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1032
1033                         /* save reply likes. */
1034                         int replyLikeCounter = 0;
1035                         for (String replyId : sone.getLikedReplyIds()) {
1036                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1037                         }
1038                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1039
1040                         /* save friends. */
1041                         int friendCounter = 0;
1042                         for (String friendId : sone.getFriends()) {
1043                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1044                         }
1045                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1046
1047                         logger.log(Level.INFO, "Sone %s saved.", sone);
1048                 } catch (ConfigurationException ce1) {
1049                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
1050                 }
1051         }
1052
1053         /**
1054          * Creates a new post.
1055          *
1056          * @param sone
1057          *            The Sone that creates the post
1058          * @param text
1059          *            The text of the post
1060          */
1061         public void createPost(Sone sone, String text) {
1062                 createPost(sone, System.currentTimeMillis(), text);
1063         }
1064
1065         /**
1066          * Creates a new post.
1067          *
1068          * @param sone
1069          *            The Sone that creates the post
1070          * @param time
1071          *            The time of the post
1072          * @param text
1073          *            The text of the post
1074          */
1075         public void createPost(Sone sone, long time, String text) {
1076                 if (!isLocalSone(sone)) {
1077                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
1078                         return;
1079                 }
1080                 Post post = new Post(sone, time, text);
1081                 synchronized (posts) {
1082                         posts.put(post.getId(), post);
1083                 }
1084                 synchronized (newPosts) {
1085                         knownPosts.add(post.getId());
1086                 }
1087                 sone.addPost(post);
1088                 saveSone(sone);
1089         }
1090
1091         /**
1092          * Deletes the given post.
1093          *
1094          * @param post
1095          *            The post to delete
1096          */
1097         public void deletePost(Post post) {
1098                 if (!isLocalSone(post.getSone())) {
1099                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
1100                         return;
1101                 }
1102                 post.getSone().removePost(post);
1103                 synchronized (posts) {
1104                         posts.remove(post.getId());
1105                 }
1106                 saveSone(post.getSone());
1107         }
1108
1109         /**
1110          * Creates a new reply.
1111          *
1112          * @param sone
1113          *            The Sone that creates the reply
1114          * @param post
1115          *            The post that this reply refers to
1116          * @param text
1117          *            The text of the reply
1118          * @return The created reply
1119          */
1120         public Reply createReply(Sone sone, Post post, String text) {
1121                 return createReply(sone, post, System.currentTimeMillis(), text);
1122         }
1123
1124         /**
1125          * Creates a new reply.
1126          *
1127          * @param sone
1128          *            The Sone that creates the reply
1129          * @param post
1130          *            The post that this reply refers to
1131          * @param time
1132          *            The time of the reply
1133          * @param text
1134          *            The text of the reply
1135          * @return The created reply
1136          */
1137         public Reply createReply(Sone sone, Post post, long time, String text) {
1138                 if (!isLocalSone(sone)) {
1139                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
1140                         return null;
1141                 }
1142                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
1143                 synchronized (replies) {
1144                         replies.put(reply.getId(), reply);
1145                 }
1146                 synchronized (newReplies) {
1147                         knownReplies.add(reply.getId());
1148                 }
1149                 sone.addReply(reply);
1150                 saveSone(sone);
1151                 return reply;
1152         }
1153
1154         /**
1155          * Deletes the given reply.
1156          *
1157          * @param reply
1158          *            The reply to delete
1159          */
1160         public void deleteReply(Reply reply) {
1161                 Sone sone = reply.getSone();
1162                 if (!isLocalSone(sone)) {
1163                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
1164                         return;
1165                 }
1166                 synchronized (replies) {
1167                         replies.remove(reply.getId());
1168                 }
1169                 sone.removeReply(reply);
1170                 saveSone(sone);
1171         }
1172
1173         /**
1174          * Starts the core.
1175          */
1176         public void start() {
1177                 loadConfiguration();
1178         }
1179
1180         /**
1181          * Stops the core.
1182          */
1183         public void stop() {
1184                 synchronized (localSones) {
1185                         for (SoneInserter soneInserter : soneInserters.values()) {
1186                                 soneInserter.stop();
1187                         }
1188                 }
1189                 saveConfiguration();
1190                 stopped = true;
1191         }
1192
1193         //
1194         // PRIVATE METHODS
1195         //
1196
1197         /**
1198          * Loads the configuration.
1199          */
1200         @SuppressWarnings("unchecked")
1201         private void loadConfiguration() {
1202                 /* create options. */
1203                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
1204
1205                         @Override
1206                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1207                                 SoneInserter.setInsertionDelay(newValue);
1208                         }
1209
1210                 }));
1211                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
1212                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
1213                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
1214
1215                 /* read options from configuration. */
1216                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
1217                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
1218                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
1219                 options.getBooleanOption("ClearOnNextRestart").set(null);
1220                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
1221                 if (clearConfiguration) {
1222                         /* stop loading the configuration. */
1223                         return;
1224                 }
1225
1226                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
1227                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
1228
1229                 /* load known Sones. */
1230                 int soneCounter = 0;
1231                 while (true) {
1232                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1233                         if (knownSoneId == null) {
1234                                 break;
1235                         }
1236                         synchronized (newSones) {
1237                                 knownSones.add(knownSoneId);
1238                         }
1239                 }
1240
1241                 /* load known posts. */
1242                 int postCounter = 0;
1243                 while (true) {
1244                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
1245                         if (knownPostId == null) {
1246                                 break;
1247                         }
1248                         synchronized (newPosts) {
1249                                 knownPosts.add(knownPostId);
1250                         }
1251                 }
1252
1253                 /* load known replies. */
1254                 int replyCounter = 0;
1255                 while (true) {
1256                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
1257                         if (knownReplyId == null) {
1258                                 break;
1259                         }
1260                         synchronized (newReplies) {
1261                                 knownReplies.add(knownReplyId);
1262                         }
1263                 }
1264
1265         }
1266
1267         /**
1268          * Saves the current options.
1269          */
1270         private void saveConfiguration() {
1271                 /* store the options first. */
1272                 try {
1273                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1274                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
1275                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
1276                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
1277
1278                         /* save known Sones. */
1279                         int soneCounter = 0;
1280                         synchronized (newSones) {
1281                                 for (String knownSoneId : knownSones) {
1282                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1283                                 }
1284                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1285                         }
1286
1287                         /* save known posts. */
1288                         int postCounter = 0;
1289                         synchronized (newPosts) {
1290                                 for (String knownPostId : knownPosts) {
1291                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
1292                                 }
1293                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
1294                         }
1295
1296                         /* save known replies. */
1297                         int replyCounter = 0;
1298                         synchronized (newReplies) {
1299                                 for (String knownReplyId : knownReplies) {
1300                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
1301                                 }
1302                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
1303                         }
1304
1305                 } catch (ConfigurationException ce1) {
1306                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1307                 }
1308         }
1309
1310         /**
1311          * Generate a Sone URI from the given URI and latest edition.
1312          *
1313          * @param uriString
1314          *            The URI to derive the Sone URI from
1315          * @return The derived URI
1316          */
1317         private FreenetURI getSoneUri(String uriString) {
1318                 try {
1319                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
1320                         return uri;
1321                 } catch (MalformedURLException mue1) {
1322                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
1323                         return null;
1324                 }
1325         }
1326
1327         //
1328         // INTERFACE IdentityListener
1329         //
1330
1331         /**
1332          * {@inheritDoc}
1333          */
1334         @Override
1335         public void ownIdentityAdded(OwnIdentity ownIdentity) {
1336                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
1337                 if (ownIdentity.hasContext("Sone")) {
1338                         addLocalSone(ownIdentity);
1339                 }
1340         }
1341
1342         /**
1343          * {@inheritDoc}
1344          */
1345         @Override
1346         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
1347                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
1348         }
1349
1350         /**
1351          * {@inheritDoc}
1352          */
1353         @Override
1354         public void identityAdded(Identity identity) {
1355                 logger.log(Level.FINEST, "Adding Identity: " + identity);
1356                 addRemoteSone(identity);
1357         }
1358
1359         /**
1360          * {@inheritDoc}
1361          */
1362         @Override
1363         public void identityUpdated(final Identity identity) {
1364                 new Thread(new Runnable() {
1365
1366                         @Override
1367                         @SuppressWarnings("synthetic-access")
1368                         public void run() {
1369                                 Sone sone = getRemoteSone(identity.getId());
1370                                 soneDownloader.fetchSone(sone);
1371                         }
1372                 }).start();
1373         }
1374
1375         /**
1376          * {@inheritDoc}
1377          */
1378         @Override
1379         public void identityRemoved(Identity identity) {
1380                 /* TODO */
1381         }
1382
1383 }