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

   1 /*
   2  * Sone - Core.java - Copyright © 2010 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28 import java.util.logging.Level;
  29 import java.util.logging.Logger;
  30
  31 import net.pterodactylus.sone.core.Options.DefaultOption;
  32 import net.pterodactylus.sone.core.Options.Option;
  33 import net.pterodactylus.sone.core.Options.OptionWatcher;
  34 import net.pterodactylus.sone.data.Album;
  35 import net.pterodactylus.sone.data.Client;
  36 import net.pterodactylus.sone.data.Image;
  37 import net.pterodactylus.sone.data.Post;
  38 import net.pterodactylus.sone.data.Profile;
  39 import net.pterodactylus.sone.data.Profile.Field;
  40 import net.pterodactylus.sone.data.Reply;
  41 import net.pterodactylus.sone.data.Sone;
  42 import net.pterodactylus.sone.freenet.wot.Identity;
  43 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  44 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  45 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  46 import net.pterodactylus.sone.freenet.wot.Trust;
  47 import net.pterodactylus.sone.freenet.wot.WebOfTrustException;
  48 import net.pterodactylus.sone.main.SonePlugin;
  49 import net.pterodactylus.util.config.Configuration;
  50 import net.pterodactylus.util.config.ConfigurationException;
  51 import net.pterodactylus.util.logging.Logging;
  52 import net.pterodactylus.util.number.Numbers;
  53 import net.pterodactylus.util.validation.Validation;
  54 import net.pterodactylus.util.version.Version;
  55 import freenet.keys.FreenetURI;
  56
  57 /**
  58  * The Sone core.
  59  *
  60  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  61  */
  62 public class Core implements IdentityListener, UpdateListener {
  63
  64         /**
  65          * Enumeration for the possible states of a {@link Sone}.
  66          *
  67          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  68          */
  69         public enum SoneStatus {
  70
  71                 /** The Sone is unknown, i.e. not yet downloaded. */
  72                 unknown,
  73
  74                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  75                 idle,
  76
  77                 /** The Sone is currently being inserted. */
  78                 inserting,
  79
  80                 /** The Sone is currently being downloaded. */
  81                 downloading,
  82         }
  83
  84         /** The logger. */
  85         private static final Logger logger = Logging.getLogger(Core.class);
  86
  87         /** The options. */
  88         private final Options options = new Options();
  89
  90         /** The preferences. */
  91         private final Preferences preferences = new Preferences(options);
  92
  93         /** The core listener manager. */
  94         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
  95
  96         /** The configuration. */
  97         private Configuration configuration;
  98
  99         /** Whether we’re currently saving the configuration. */
 100         private boolean storingConfiguration = false;
 101
 102         /** The identity manager. */
 103         private final IdentityManager identityManager;
 104
 105         /** Interface to freenet. */
 106         private final FreenetInterface freenetInterface;
 107
 108         /** The Sone downloader. */
 109         private final SoneDownloader soneDownloader;
 110
 111         /** The update checker. */
 112         private final UpdateChecker updateChecker;
 113
 114         /** Whether the core has been stopped. */
 115         private volatile boolean stopped;
 116
 117         /** The Sones’ statuses. */
 118         /* synchronize access on itself. */
 119         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
 120
 121         /** Locked local Sones. */
 122         /* synchronize on itself. */
 123         private final Set<Sone> lockedSones = new HashSet<Sone>();
 124
 125         /** Sone inserters. */
 126         /* synchronize access on this on localSones. */
 127         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 128
 129         /** All local Sones. */
 130         /* synchronize access on this on itself. */
 131         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 132
 133         /** All remote Sones. */
 134         /* synchronize access on this on itself. */
 135         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 136
 137         /** All new Sones. */
 138         private Set<String> newSones = new HashSet<String>();
 139
 140         /** All known Sones. */
 141         /* synchronize access on {@link #newSones}. */
 142         private Set<String> knownSones = new HashSet<String>();
 143
 144         /** All posts. */
 145         private Map<String, Post> posts = new HashMap<String, Post>();
 146
 147         /** All new posts. */
 148         private Set<String> newPosts = new HashSet<String>();
 149
 150         /** All known posts. */
 151         /* synchronize access on {@link #newPosts}. */
 152         private Set<String> knownPosts = new HashSet<String>();
 153
 154         /** All replies. */
 155         private Map<String, Reply> replies = new HashMap<String, Reply>();
 156
 157         /** All new replies. */
 158         private Set<String> newReplies = new HashSet<String>();
 159
 160         /** All known replies. */
 161         private Set<String> knownReplies = new HashSet<String>();
 162
 163         /** All bookmarked posts. */
 164         /* synchronize access on itself. */
 165         private Set<String> bookmarkedPosts = new HashSet<String>();
 166
 167         /** Trusted identities, sorted by own identities. */
 168         private Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 169
 170         /** All known albums. */
 171         private Map<String, Album> albums = new HashMap<String, Album>();
 172
 173         /** All known images. */
 174         private Map<String, Image> images = new HashMap<String, Image>();
 175
 176         /**
 177          * Creates a new core.
 178          *
 179          * @param configuration
 180          *            The configuration of the core
 181          * @param freenetInterface
 182          *            The freenet interface
 183          * @param identityManager
 184          *            The identity manager
 185          */
 186         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 187                 this.configuration = configuration;
 188                 this.freenetInterface = freenetInterface;
 189                 this.identityManager = identityManager;
 190                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 191                 this.updateChecker = new UpdateChecker(freenetInterface);
 192         }
 193
 194         //
 195         // LISTENER MANAGEMENT
 196         //
 197
 198         /**
 199          * Adds a new core listener.
 200          *
 201          * @param coreListener
 202          *            The listener to add
 203          */
 204         public void addCoreListener(CoreListener coreListener) {
 205                 coreListenerManager.addListener(coreListener);
 206         }
 207
 208         /**
 209          * Removes a core listener.
 210          *
 211          * @param coreListener
 212          *            The listener to remove
 213          */
 214         public void removeCoreListener(CoreListener coreListener) {
 215                 coreListenerManager.removeListener(coreListener);
 216         }
 217
 218         //
 219         // ACCESSORS
 220         //
 221
 222         /**
 223          * Sets the configuration to use. This will automatically save the current
 224          * configuration to the given configuration.
 225          *
 226          * @param configuration
 227          *            The new configuration to use
 228          */
 229         public void setConfiguration(Configuration configuration) {
 230                 this.configuration = configuration;
 231                 saveConfiguration();
 232         }
 233
 234         /**
 235          * Returns the options used by the core.
 236          *
 237          * @return The options of the core
 238          */
 239         public Preferences getPreferences() {
 240                 return preferences;
 241         }
 242
 243         /**
 244          * Returns the identity manager used by the core.
 245          *
 246          * @return The identity manager
 247          */
 248         public IdentityManager getIdentityManager() {
 249                 return identityManager;
 250         }
 251
 252         /**
 253          * Returns the update checker.
 254          *
 255          * @return The update checker
 256          */
 257         public UpdateChecker getUpdateChecker() {
 258                 return updateChecker;
 259         }
 260
 261         /**
 262          * Returns the status of the given Sone.
 263          *
 264          * @param sone
 265          *            The Sone to get the status for
 266          * @return The status of the Sone
 267          */
 268         public SoneStatus getSoneStatus(Sone sone) {
 269                 synchronized (soneStatuses) {
 270                         return soneStatuses.get(sone);
 271                 }
 272         }
 273
 274         /**
 275          * Sets the status of the given Sone.
 276          *
 277          * @param sone
 278          *            The Sone to set the status of
 279          * @param soneStatus
 280          *            The status to set
 281          */
 282         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 283                 synchronized (soneStatuses) {
 284                         soneStatuses.put(sone, soneStatus);
 285                 }
 286         }
 287
 288         /**
 289          * Returns whether the given Sone is currently locked.
 290          *
 291          * @param sone
 292          *            The sone to check
 293          * @return {@code true} if the Sone is locked, {@code false} if it is not
 294          */
 295         public boolean isLocked(Sone sone) {
 296                 synchronized (lockedSones) {
 297                         return lockedSones.contains(sone);
 298                 }
 299         }
 300
 301         /**
 302          * Returns all Sones, remote and local.
 303          *
 304          * @return All Sones
 305          */
 306         public Set<Sone> getSones() {
 307                 Set<Sone> allSones = new HashSet<Sone>();
 308                 allSones.addAll(getLocalSones());
 309                 allSones.addAll(getRemoteSones());
 310                 return allSones;
 311         }
 312
 313         /**
 314          * Returns the Sone with the given ID, regardless whether it’s local or
 315          * remote.
 316          *
 317          * @param id
 318          *            The ID of the Sone to get
 319          * @return The Sone with the given ID, or {@code null} if there is no such
 320          *         Sone
 321          */
 322         public Sone getSone(String id) {
 323                 return getSone(id, true);
 324         }
 325
 326         /**
 327          * Returns the Sone with the given ID, regardless whether it’s local or
 328          * remote.
 329          *
 330          * @param id
 331          *            The ID of the Sone to get
 332          * @param create
 333          *            {@code true} to create a new Sone if none exists,
 334          *            {@code false} to return {@code null} if a Sone with the given
 335          *            ID does not exist
 336          * @return The Sone with the given ID, or {@code null} if there is no such
 337          *         Sone
 338          */
 339         public Sone getSone(String id, boolean create) {
 340                 if (isLocalSone(id)) {
 341                         return getLocalSone(id);
 342                 }
 343                 return getRemoteSone(id, create);
 344         }
 345
 346         /**
 347          * Checks whether the core knows a Sone with the given ID.
 348          *
 349          * @param id
 350          *            The ID of the Sone
 351          * @return {@code true} if there is a Sone with the given ID, {@code false}
 352          *         otherwise
 353          */
 354         public boolean hasSone(String id) {
 355                 return isLocalSone(id) || isRemoteSone(id);
 356         }
 357
 358         /**
 359          * Returns whether the given Sone is a local Sone.
 360          *
 361          * @param sone
 362          *            The Sone to check for its locality
 363          * @return {@code true} if the given Sone is local, {@code false} otherwise
 364          */
 365         public boolean isLocalSone(Sone sone) {
 366                 synchronized (localSones) {
 367                         return localSones.containsKey(sone.getId());
 368                 }
 369         }
 370
 371         /**
 372          * Returns whether the given ID is the ID of a local Sone.
 373          *
 374          * @param id
 375          *            The Sone ID to check for its locality
 376          * @return {@code true} if the given ID is a local Sone, {@code false}
 377          *         otherwise
 378          */
 379         public boolean isLocalSone(String id) {
 380                 synchronized (localSones) {
 381                         return localSones.containsKey(id);
 382                 }
 383         }
 384
 385         /**
 386          * Returns all local Sones.
 387          *
 388          * @return All local Sones
 389          */
 390         public Set<Sone> getLocalSones() {
 391                 synchronized (localSones) {
 392                         return new HashSet<Sone>(localSones.values());
 393                 }
 394         }
 395
 396         /**
 397          * Returns the local Sone with the given ID.
 398          *
 399          * @param id
 400          *            The ID of the Sone to get
 401          * @return The Sone with the given ID
 402          */
 403         public Sone getLocalSone(String id) {
 404                 return getLocalSone(id, true);
 405         }
 406
 407         /**
 408          * Returns the local Sone with the given ID, optionally creating a new Sone.
 409          *
 410          * @param id
 411          *            The ID of the Sone
 412          * @param create
 413          *            {@code true} to create a new Sone if none exists,
 414          *            {@code false} to return null if none exists
 415          * @return The Sone with the given ID, or {@code null}
 416          */
 417         public Sone getLocalSone(String id, boolean create) {
 418                 synchronized (localSones) {
 419                         Sone sone = localSones.get(id);
 420                         if ((sone == null) && create) {
 421                                 sone = new Sone(id);
 422                                 localSones.put(id, sone);
 423                                 setSoneStatus(sone, SoneStatus.unknown);
 424                         }
 425                         return sone;
 426                 }
 427         }
 428
 429         /**
 430          * Returns all remote Sones.
 431          *
 432          * @return All remote Sones
 433          */
 434         public Set<Sone> getRemoteSones() {
 435                 synchronized (remoteSones) {
 436                         return new HashSet<Sone>(remoteSones.values());
 437                 }
 438         }
 439
 440         /**
 441          * Returns the remote Sone with the given ID.
 442          *
 443          * @param id
 444          *            The ID of the remote Sone to get
 445          * @return The Sone with the given ID
 446          */
 447         public Sone getRemoteSone(String id) {
 448                 return getRemoteSone(id, true);
 449         }
 450
 451         /**
 452          * Returns the remote Sone with the given ID.
 453          *
 454          * @param id
 455          *            The ID of the remote Sone to get
 456          * @param create
 457          *            {@code true} to always create a Sone, {@code false} to return
 458          *            {@code null} if no Sone with the given ID exists
 459          * @return The Sone with the given ID
 460          */
 461         public Sone getRemoteSone(String id, boolean create) {
 462                 synchronized (remoteSones) {
 463                         Sone sone = remoteSones.get(id);
 464                         if ((sone == null) && create) {
 465                                 sone = new Sone(id);
 466                                 remoteSones.put(id, sone);
 467                                 setSoneStatus(sone, SoneStatus.unknown);
 468                         }
 469                         return sone;
 470                 }
 471         }
 472
 473         /**
 474          * Returns whether the given Sone is a remote Sone.
 475          *
 476          * @param sone
 477          *            The Sone to check
 478          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 479          *         otherwise
 480          */
 481         public boolean isRemoteSone(Sone sone) {
 482                 synchronized (remoteSones) {
 483                         return remoteSones.containsKey(sone.getId());
 484                 }
 485         }
 486
 487         /**
 488          * Returns whether the Sone with the given ID is a remote Sone.
 489          *
 490          * @param id
 491          *            The ID of the Sone to check
 492          * @return {@code true} if the Sone with the given ID is a remote Sone,
 493          *         {@code false} otherwise
 494          */
 495         public boolean isRemoteSone(String id) {
 496                 synchronized (remoteSones) {
 497                         return remoteSones.containsKey(id);
 498                 }
 499         }
 500
 501         /**
 502          * Returns whether the Sone with the given ID is a new Sone.
 503          *
 504          * @param soneId
 505          *            The ID of the sone to check for
 506          * @return {@code true} if the given Sone is new, false otherwise
 507          */
 508         public boolean isNewSone(String soneId) {
 509                 synchronized (newSones) {
 510                         return !knownSones.contains(soneId) && newSones.contains(soneId);
 511                 }
 512         }
 513
 514         /**
 515          * Returns whether the given Sone has been modified.
 516          *
 517          * @param sone
 518          *            The Sone to check for modifications
 519          * @return {@code true} if a modification has been detected in the Sone,
 520          *         {@code false} otherwise
 521          */
 522         public boolean isModifiedSone(Sone sone) {
 523                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 524         }
 525
 526         /**
 527          * Returns whether the target Sone is trusted by the origin Sone.
 528          *
 529          * @param origin
 530          *            The origin Sone
 531          * @param target
 532          *            The target Sone
 533          * @return {@code true} if the target Sone is trusted by the origin Sone
 534          */
 535         public boolean isSoneTrusted(Sone origin, Sone target) {
 536                 return trustedIdentities.containsKey(origin) && trustedIdentities.get(origin.getIdentity()).contains(target);
 537         }
 538
 539         /**
 540          * Returns the post with the given ID.
 541          *
 542          * @param postId
 543          *            The ID of the post to get
 544          * @return The post, or {@code null} if there is no such post
 545          */
 546         public Post getPost(String postId) {
 547                 return getPost(postId, true);
 548         }
 549
 550         /**
 551          * Returns the post with the given ID, optionally creating a new post.
 552          *
 553          * @param postId
 554          *            The ID of the post to get
 555          * @param create
 556          *            {@code true} it create a new post if no post with the given ID
 557          *            exists, {@code false} to return {@code null}
 558          * @return The post, or {@code null} if there is no such post
 559          */
 560         public Post getPost(String postId, boolean create) {
 561                 synchronized (posts) {
 562                         Post post = posts.get(postId);
 563                         if ((post == null) && create) {
 564                                 post = new Post(postId);
 565                                 posts.put(postId, post);
 566                         }
 567                         return post;
 568                 }
 569         }
 570
 571         /**
 572          * Returns whether the given post ID is new.
 573          *
 574          * @param postId
 575          *            The post ID
 576          * @return {@code true} if the post is considered to be new, {@code false}
 577          *         otherwise
 578          */
 579         public boolean isNewPost(String postId) {
 580                 synchronized (newPosts) {
 581                         return !knownPosts.contains(postId) && newPosts.contains(postId);
 582                 }
 583         }
 584
 585         /**
 586          * Returns the reply with the given ID. If there is no reply with the given
 587          * ID yet, a new one is created.
 588          *
 589          * @param replyId
 590          *            The ID of the reply to get
 591          * @return The reply
 592          */
 593         public Reply getReply(String replyId) {
 594                 return getReply(replyId, true);
 595         }
 596
 597         /**
 598          * Returns the reply with the given ID. If there is no reply with the given
 599          * ID yet, a new one is created, unless {@code create} is false in which
 600          * case {@code null} is returned.
 601          *
 602          * @param replyId
 603          *            The ID of the reply to get
 604          * @param create
 605          *            {@code true} to always return a {@link Reply}, {@code false}
 606          *            to return {@code null} if no reply can be found
 607          * @return The reply, or {@code null} if there is no such reply
 608          */
 609         public Reply getReply(String replyId, boolean create) {
 610                 synchronized (replies) {
 611                         Reply reply = replies.get(replyId);
 612                         if (create && (reply == null)) {
 613                                 reply = new Reply(replyId);
 614                                 replies.put(replyId, reply);
 615                         }
 616                         return reply;
 617                 }
 618         }
 619
 620         /**
 621          * Returns all replies for the given post, order ascending by time.
 622          *
 623          * @param post
 624          *            The post to get all replies for
 625          * @return All replies for the given post
 626          */
 627         public List<Reply> getReplies(Post post) {
 628                 Set<Sone> sones = getSones();
 629                 List<Reply> replies = new ArrayList<Reply>();
 630                 for (Sone sone : sones) {
 631                         for (Reply reply : sone.getReplies()) {
 632                                 if (reply.getPost().equals(post)) {
 633                                         replies.add(reply);
 634                                 }
 635                         }
 636                 }
 637                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 638                 return replies;
 639         }
 640
 641         /**
 642          * Returns whether the reply with the given ID is new.
 643          *
 644          * @param replyId
 645          *            The ID of the reply to check
 646          * @return {@code true} if the reply is considered to be new, {@code false}
 647          *         otherwise
 648          */
 649         public boolean isNewReply(String replyId) {
 650                 synchronized (newReplies) {
 651                         return !knownReplies.contains(replyId) && newReplies.contains(replyId);
 652                 }
 653         }
 654
 655         /**
 656          * Returns all Sones that have liked the given post.
 657          *
 658          * @param post
 659          *            The post to get the liking Sones for
 660          * @return The Sones that like the given post
 661          */
 662         public Set<Sone> getLikes(Post post) {
 663                 Set<Sone> sones = new HashSet<Sone>();
 664                 for (Sone sone : getSones()) {
 665                         if (sone.getLikedPostIds().contains(post.getId())) {
 666                                 sones.add(sone);
 667                         }
 668                 }
 669                 return sones;
 670         }
 671
 672         /**
 673          * Returns all Sones that have liked the given reply.
 674          *
 675          * @param reply
 676          *            The reply to get the liking Sones for
 677          * @return The Sones that like the given reply
 678          */
 679         public Set<Sone> getLikes(Reply reply) {
 680                 Set<Sone> sones = new HashSet<Sone>();
 681                 for (Sone sone : getSones()) {
 682                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 683                                 sones.add(sone);
 684                         }
 685                 }
 686                 return sones;
 687         }
 688
 689         /**
 690          * Returns whether the given post is bookmarked.
 691          *
 692          * @param post
 693          *            The post to check
 694          * @return {@code true} if the given post is bookmarked, {@code false}
 695          *         otherwise
 696          */
 697         public boolean isBookmarked(Post post) {
 698                 return isPostBookmarked(post.getId());
 699         }
 700
 701         /**
 702          * Returns whether the post with the given ID is bookmarked.
 703          *
 704          * @param id
 705          *            The ID of the post to check
 706          * @return {@code true} if the post with the given ID is bookmarked,
 707          *         {@code false} otherwise
 708          */
 709         public boolean isPostBookmarked(String id) {
 710                 synchronized (bookmarkedPosts) {
 711                         return bookmarkedPosts.contains(id);
 712                 }
 713         }
 714
 715         /**
 716          * Returns all currently known bookmarked posts.
 717          *
 718          * @return All bookmarked posts
 719          */
 720         public Set<Post> getBookmarkedPosts() {
 721                 Set<Post> posts = new HashSet<Post>();
 722                 synchronized (bookmarkedPosts) {
 723                         for (String bookmarkedPostId : bookmarkedPosts) {
 724                                 Post post = getPost(bookmarkedPostId, false);
 725                                 if (post != null) {
 726                                         posts.add(post);
 727                                 }
 728                         }
 729                 }
 730                 return posts;
 731         }
 732
 733         /**
 734          * Returns the album with the given ID, creating a new album if no album
 735          * with the given ID can be found.
 736          *
 737          * @param albumId
 738          *            The ID of the album
 739          * @return The album with the given ID
 740          */
 741         public Album getAlbum(String albumId) {
 742                 return getAlbum(albumId, true);
 743         }
 744
 745         /**
 746          * Returns the album with the given ID, optionally creating a new album if
 747          * an album with the given ID can not be found.
 748          *
 749          * @param albumId
 750          *            The ID of the album
 751          * @param create
 752          *            {@code true} to create a new album if none exists for the
 753          *            given ID
 754          * @return The album with the given ID, or {@code null} if no album with the
 755          *         given ID exists and {@code create} is {@code false}
 756          */
 757         public Album getAlbum(String albumId, boolean create) {
 758                 synchronized (albums) {
 759                         Album album = albums.get(albumId);
 760                         if (create && (album == null)) {
 761                                 album = new Album(albumId);
 762                                 albums.put(albumId, album);
 763                         }
 764                         return album;
 765                 }
 766         }
 767
 768         /**
 769          * Returns the image with the given ID, creating it if necessary.
 770          *
 771          * @param imageId
 772          *            The ID of the image
 773          * @return The image with the given ID
 774          */
 775         public Image getImage(String imageId) {
 776                 return getImage(imageId, true);
 777         }
 778
 779         /**
 780          * Returns the image with the given ID, optionally creating it if it does
 781          * not exist.
 782          *
 783          * @param imageId
 784          *            The ID of the image
 785          * @param create
 786          *            {@code true} to create an image if none exists with the given
 787          *            ID
 788          * @return The image with the given ID, or {@code null} if none exists and
 789          *         none was created
 790          */
 791         public Image getImage(String imageId, boolean create) {
 792                 synchronized (images) {
 793                         Image image = images.get(imageId);
 794                         if (create && (image == null)) {
 795                                 image = new Image(imageId);
 796                                 images.put(imageId, image);
 797                         }
 798                         return image;
 799                 }
 800         }
 801
 802         //
 803         // ACTIONS
 804         //
 805
 806         /**
 807          * Locks the given Sone. A locked Sone will not be inserted by
 808          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 809          * again.
 810          *
 811          * @param sone
 812          *            The sone to lock
 813          */
 814         public void lockSone(Sone sone) {
 815                 synchronized (lockedSones) {
 816                         if (lockedSones.add(sone)) {
 817                                 coreListenerManager.fireSoneLocked(sone);
 818                         }
 819                 }
 820         }
 821
 822         /**
 823          * Unlocks the given Sone.
 824          *
 825          * @see #lockSone(Sone)
 826          * @param sone
 827          *            The sone to unlock
 828          */
 829         public void unlockSone(Sone sone) {
 830                 synchronized (lockedSones) {
 831                         if (lockedSones.remove(sone)) {
 832                                 coreListenerManager.fireSoneUnlocked(sone);
 833                         }
 834                 }
 835         }
 836
 837         /**
 838          * Adds a local Sone from the given ID which has to be the ID of an own
 839          * identity.
 840          *
 841          * @param id
 842          *            The ID of an own identity to add a Sone for
 843          * @return The added (or already existing) Sone
 844          */
 845         public Sone addLocalSone(String id) {
 846                 synchronized (localSones) {
 847                         if (localSones.containsKey(id)) {
 848                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 849                                 return localSones.get(id);
 850                         }
 851                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 852                         if (ownIdentity == null) {
 853                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 854                                 return null;
 855                         }
 856                         return addLocalSone(ownIdentity);
 857                 }
 858         }
 859
 860         /**
 861          * Adds a local Sone from the given own identity.
 862          *
 863          * @param ownIdentity
 864          *            The own identity to create a Sone from
 865          * @return The added (or already existing) Sone
 866          */
 867         public Sone addLocalSone(OwnIdentity ownIdentity) {
 868                 if (ownIdentity == null) {
 869                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 870                         return null;
 871                 }
 872                 synchronized (localSones) {
 873                         final Sone sone;
 874                         try {
 875                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 876                         } catch (MalformedURLException mue1) {
 877                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 878                                 return null;
 879                         }
 880                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 881                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 882                         /* TODO - load posts ’n stuff */
 883                         localSones.put(ownIdentity.getId(), sone);
 884                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 885                         soneInserters.put(sone, soneInserter);
 886                         setSoneStatus(sone, SoneStatus.idle);
 887                         loadSone(sone);
 888                         if (!preferences.isSoneRescueMode()) {
 889                                 soneInserter.start();
 890                         }
 891                         new Thread(new Runnable() {
 892
 893                                 @Override
 894                                 @SuppressWarnings("synthetic-access")
 895                                 public void run() {
 896                                         if (!preferences.isSoneRescueMode()) {
 897                                                 soneDownloader.fetchSone(sone);
 898                                                 return;
 899                                         }
 900                                         logger.log(Level.INFO, "Trying to restore Sone from Freenet…");
 901                                         coreListenerManager.fireRescuingSone(sone);
 902                                         lockSone(sone);
 903                                         long edition = sone.getLatestEdition();
 904                                         while (!stopped && (edition >= 0) && preferences.isSoneRescueMode()) {
 905                                                 logger.log(Level.FINE, "Downloading edition " + edition + "…");
 906                                                 soneDownloader.fetchSone(sone, sone.getRequestUri().setKeyType("SSK").setDocName("Sone-" + edition));
 907                                                 --edition;
 908                                         }
 909                                         logger.log(Level.INFO, "Finished restoring Sone from Freenet, starting Inserter…");
 910                                         saveSone(sone);
 911                                         coreListenerManager.fireRescuedSone(sone);
 912                                         soneInserter.start();
 913                                 }
 914
 915                         }, "Sone Downloader").start();
 916                         return sone;
 917                 }
 918         }
 919
 920         /**
 921          * Creates a new Sone for the given own identity.
 922          *
 923          * @param ownIdentity
 924          *            The own identity to create a Sone for
 925          * @return The created Sone
 926          */
 927         public Sone createSone(OwnIdentity ownIdentity) {
 928                 try {
 929                         ownIdentity.addContext("Sone");
 930                 } catch (WebOfTrustException wote1) {
 931                         logger.log(Level.SEVERE, "Could not add “Sone” context to own identity: " + ownIdentity, wote1);
 932                         return null;
 933                 }
 934                 Sone sone = addLocalSone(ownIdentity);
 935                 return sone;
 936         }
 937
 938         /**
 939          * Adds the Sone of the given identity.
 940          *
 941          * @param identity
 942          *            The identity whose Sone to add
 943          * @return The added or already existing Sone
 944          */
 945         public Sone addRemoteSone(Identity identity) {
 946                 if (identity == null) {
 947                         logger.log(Level.WARNING, "Given Identity is null!");
 948                         return null;
 949                 }
 950                 synchronized (remoteSones) {
 951                         final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
 952                         boolean newSone = sone.getRequestUri() == null;
 953                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 954                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 955                         if (newSone) {
 956                                 synchronized (newSones) {
 957                                         newSone = !knownSones.contains(sone.getId());
 958                                         if (newSone) {
 959                                                 newSones.add(sone.getId());
 960                                         }
 961                                 }
 962                                 if (newSone) {
 963                                         coreListenerManager.fireNewSoneFound(sone);
 964                                 }
 965                         }
 966                         remoteSones.put(identity.getId(), sone);
 967                         soneDownloader.addSone(sone);
 968                         setSoneStatus(sone, SoneStatus.unknown);
 969                         new Thread(new Runnable() {
 970
 971                                 @Override
 972                                 @SuppressWarnings("synthetic-access")
 973                                 public void run() {
 974                                         soneDownloader.fetchSone(sone);
 975                                 }
 976
 977                         }, "Sone Downloader").start();
 978                         return sone;
 979                 }
 980         }
 981
 982         /**
 983          * Retrieves the trust relationship from the origin to the target. If the
 984          * trust relationship can not be retrieved, {@code null} is returned.
 985          *
 986          * @see Identity#getTrust(OwnIdentity)
 987          * @param origin
 988          *            The origin of the trust tree
 989          * @param target
 990          *            The target of the trust
 991          * @return The trust relationship
 992          */
 993         public Trust getTrust(Sone origin, Sone target) {
 994                 if (!isLocalSone(origin)) {
 995                         logger.log(Level.WARNING, "Tried to get trust from remote Sone: %s", origin);
 996                         return null;
 997                 }
 998                 return target.getIdentity().getTrust((OwnIdentity) origin.getIdentity());
 999         }
1000
1001         /**
1002          * Sets the trust value of the given origin Sone for the target Sone.
1003          *
1004          * @param origin
1005          *            The origin Sone
1006          * @param target
1007          *            The target Sone
1008          * @param trustValue
1009          *            The trust value (from {@code -100} to {@code 100})
1010          */
1011         public void setTrust(Sone origin, Sone target, int trustValue) {
1012                 Validation.begin().isNotNull("Trust Origin", origin).check().isInstanceOf("Trust Origin", origin.getIdentity(), OwnIdentity.class).isNotNull("Trust Target", target).isLessOrEqual("Trust Value", trustValue, 100).isGreaterOrEqual("Trust Value", trustValue, -100).check();
1013                 try {
1014                         ((OwnIdentity) origin.getIdentity()).setTrust(target.getIdentity(), trustValue, preferences.getTrustComment());
1015                 } catch (WebOfTrustException wote1) {
1016                         logger.log(Level.WARNING, "Could not set trust for Sone: " + target, wote1);
1017                 }
1018         }
1019
1020         /**
1021          * Removes any trust assignment for the given target Sone.
1022          *
1023          * @param origin
1024          *            The trust origin
1025          * @param target
1026          *            The trust target
1027          */
1028         public void removeTrust(Sone origin, Sone target) {
1029                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
1030                 try {
1031                         ((OwnIdentity) origin.getIdentity()).removeTrust(target.getIdentity());
1032                 } catch (WebOfTrustException wote1) {
1033                         logger.log(Level.WARNING, "Could not remove trust for Sone: " + target, wote1);
1034                 }
1035         }
1036
1037         /**
1038          * Assigns the configured positive trust value for the given target.
1039          *
1040          * @param origin
1041          *            The trust origin
1042          * @param target
1043          *            The trust target
1044          */
1045         public void trustSone(Sone origin, Sone target) {
1046                 setTrust(origin, target, preferences.getPositiveTrust());
1047         }
1048
1049         /**
1050          * Assigns the configured negative trust value for the given target.
1051          *
1052          * @param origin
1053          *            The trust origin
1054          * @param target
1055          *            The trust target
1056          */
1057         public void distrustSone(Sone origin, Sone target) {
1058                 setTrust(origin, target, preferences.getNegativeTrust());
1059         }
1060
1061         /**
1062          * Removes the trust assignment for the given target.
1063          *
1064          * @param origin
1065          *            The trust origin
1066          * @param target
1067          *            The trust target
1068          */
1069         public void untrustSone(Sone origin, Sone target) {
1070                 removeTrust(origin, target);
1071         }
1072
1073         /**
1074          * Updates the stores Sone with the given Sone.
1075          *
1076          * @param sone
1077          *            The updated Sone
1078          */
1079         public void updateSone(Sone sone) {
1080                 if (hasSone(sone.getId())) {
1081                         boolean soneRescueMode = isLocalSone(sone) && preferences.isSoneRescueMode();
1082                         Sone storedSone = getSone(sone.getId());
1083                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1084                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
1085                                 return;
1086                         }
1087                         synchronized (posts) {
1088                                 if (!soneRescueMode) {
1089                                         for (Post post : storedSone.getPosts()) {
1090                                                 posts.remove(post.getId());
1091                                                 if (!sone.getPosts().contains(post)) {
1092                                                         coreListenerManager.firePostRemoved(post);
1093                                                 }
1094                                         }
1095                                 }
1096                                 List<Post> storedPosts = storedSone.getPosts();
1097                                 synchronized (newPosts) {
1098                                         for (Post post : sone.getPosts()) {
1099                                                 post.setSone(storedSone);
1100                                                 if (!storedPosts.contains(post) && !knownPosts.contains(post.getId())) {
1101                                                         newPosts.add(post.getId());
1102                                                         coreListenerManager.fireNewPostFound(post);
1103                                                 }
1104                                                 posts.put(post.getId(), post);
1105                                         }
1106                                 }
1107                         }
1108                         synchronized (replies) {
1109                                 if (!soneRescueMode) {
1110                                         for (Reply reply : storedSone.getReplies()) {
1111                                                 replies.remove(reply.getId());
1112                                                 if (!sone.getReplies().contains(reply)) {
1113                                                         coreListenerManager.fireReplyRemoved(reply);
1114                                                 }
1115                                         }
1116                                 }
1117                                 Set<Reply> storedReplies = storedSone.getReplies();
1118                                 synchronized (newReplies) {
1119                                         for (Reply reply : sone.getReplies()) {
1120                                                 reply.setSone(storedSone);
1121                                                 if (!storedReplies.contains(reply) && !knownReplies.contains(reply.getId())) {
1122                                                         newReplies.add(reply.getId());
1123                                                         coreListenerManager.fireNewReplyFound(reply);
1124                                                 }
1125                                                 replies.put(reply.getId(), reply);
1126                                         }
1127                                 }
1128                         }
1129                         synchronized (storedSone) {
1130                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1131                                         storedSone.setTime(sone.getTime());
1132                                 }
1133                                 storedSone.setClient(sone.getClient());
1134                                 storedSone.setProfile(sone.getProfile());
1135                                 if (soneRescueMode) {
1136                                         for (Post post : sone.getPosts()) {
1137                                                 storedSone.addPost(post);
1138                                         }
1139                                         for (Reply reply : sone.getReplies()) {
1140                                                 storedSone.addReply(reply);
1141                                         }
1142                                         for (String likedPostId : sone.getLikedPostIds()) {
1143                                                 storedSone.addLikedPostId(likedPostId);
1144                                         }
1145                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1146                                                 storedSone.addLikedReplyId(likedReplyId);
1147                                         }
1148                                 } else {
1149                                         storedSone.setPosts(sone.getPosts());
1150                                         storedSone.setReplies(sone.getReplies());
1151                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1152                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1153                                 }
1154                                 storedSone.setLatestEdition(sone.getLatestEdition());
1155                         }
1156                 }
1157         }
1158
1159         /**
1160          * Deletes the given Sone. This will remove the Sone from the
1161          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
1162          * and remove the context from its identity.
1163          *
1164          * @param sone
1165          *            The Sone to delete
1166          */
1167         public void deleteSone(Sone sone) {
1168                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1169                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
1170                         return;
1171                 }
1172                 synchronized (localSones) {
1173                         if (!localSones.containsKey(sone.getId())) {
1174                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
1175                                 return;
1176                         }
1177                         localSones.remove(sone.getId());
1178                         soneInserters.remove(sone).stop();
1179                 }
1180                 try {
1181                         ((OwnIdentity) sone.getIdentity()).removeContext("Sone");
1182                         ((OwnIdentity) sone.getIdentity()).removeProperty("Sone.LatestEdition");
1183                 } catch (WebOfTrustException wote1) {
1184                         logger.log(Level.WARNING, "Could not remove context and properties from Sone: " + sone, wote1);
1185                 }
1186                 try {
1187                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1188                 } catch (ConfigurationException ce1) {
1189                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1190                 }
1191         }
1192
1193         /**
1194          * Marks the given Sone as known. If the Sone was {@link #isNewPost(String)
1195          * new} before, a {@link CoreListener#markSoneKnown(Sone)} event is fired.
1196          *
1197          * @param sone
1198          *            The Sone to mark as known
1199          */
1200         public void markSoneKnown(Sone sone) {
1201                 synchronized (newSones) {
1202                         if (newSones.remove(sone.getId())) {
1203                                 knownSones.add(sone.getId());
1204                                 coreListenerManager.fireMarkSoneKnown(sone);
1205                                 saveConfiguration();
1206                         }
1207                 }
1208         }
1209
1210         /**
1211          * Loads and updates the given Sone from the configuration. If any error is
1212          * encountered, loading is aborted and the given Sone is not changed.
1213          *
1214          * @param sone
1215          *            The Sone to load and update
1216          */
1217         public void loadSone(Sone sone) {
1218                 if (!isLocalSone(sone)) {
1219                         logger.log(Level.FINE, "Tried to load non-local Sone: %s", sone);
1220                         return;
1221                 }
1222
1223                 /* load Sone. */
1224                 String sonePrefix = "Sone/" + sone.getId();
1225                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1226                 if (soneTime == null) {
1227                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1228                         return;
1229                 }
1230                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1231
1232                 /* load profile. */
1233                 Profile profile = new Profile();
1234                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1235                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1236                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1237                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1238                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1239                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1240
1241                 /* load profile fields. */
1242                 while (true) {
1243                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1244                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1245                         if (fieldName == null) {
1246                                 break;
1247                         }
1248                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1249                         profile.addField(fieldName).setValue(fieldValue);
1250                 }
1251
1252                 /* load posts. */
1253                 Set<Post> posts = new HashSet<Post>();
1254                 while (true) {
1255                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1256                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1257                         if (postId == null) {
1258                                 break;
1259                         }
1260                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1261                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1262                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1263                         if ((postTime == 0) || (postText == null)) {
1264                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1265                                 return;
1266                         }
1267                         Post post = getPost(postId).setSone(sone).setTime(postTime).setText(postText);
1268                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1269                                 post.setRecipient(getSone(postRecipientId));
1270                         }
1271                         posts.add(post);
1272                 }
1273
1274                 /* load replies. */
1275                 Set<Reply> replies = new HashSet<Reply>();
1276                 while (true) {
1277                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1278                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1279                         if (replyId == null) {
1280                                 break;
1281                         }
1282                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1283                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1284                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1285                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1286                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1287                                 return;
1288                         }
1289                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
1290                 }
1291
1292                 /* load post likes. */
1293                 Set<String> likedPostIds = new HashSet<String>();
1294                 while (true) {
1295                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1296                         if (likedPostId == null) {
1297                                 break;
1298                         }
1299                         likedPostIds.add(likedPostId);
1300                 }
1301
1302                 /* load reply likes. */
1303                 Set<String> likedReplyIds = new HashSet<String>();
1304                 while (true) {
1305                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1306                         if (likedReplyId == null) {
1307                                 break;
1308                         }
1309                         likedReplyIds.add(likedReplyId);
1310                 }
1311
1312                 /* load friends. */
1313                 Set<String> friends = new HashSet<String>();
1314                 while (true) {
1315                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1316                         if (friendId == null) {
1317                                 break;
1318                         }
1319                         friends.add(friendId);
1320                 }
1321
1322                 /* if we’re still here, Sone was loaded successfully. */
1323                 synchronized (sone) {
1324                         sone.setTime(soneTime);
1325                         sone.setProfile(profile);
1326                         sone.setPosts(posts);
1327                         sone.setReplies(replies);
1328                         sone.setLikePostIds(likedPostIds);
1329                         sone.setLikeReplyIds(likedReplyIds);
1330                         sone.setFriends(friends);
1331                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1332                 }
1333                 synchronized (newSones) {
1334                         for (String friend : friends) {
1335                                 knownSones.add(friend);
1336                         }
1337                 }
1338                 synchronized (newPosts) {
1339                         for (Post post : posts) {
1340                                 knownPosts.add(post.getId());
1341                         }
1342                 }
1343                 synchronized (newReplies) {
1344                         for (Reply reply : replies) {
1345                                 knownReplies.add(reply.getId());
1346                         }
1347                 }
1348         }
1349
1350         /**
1351          * Saves the given Sone. This will persist all local settings for the given
1352          * Sone, such as the friends list and similar, private options.
1353          *
1354          * @param sone
1355          *            The Sone to save
1356          */
1357         public synchronized void saveSone(Sone sone) {
1358                 if (!isLocalSone(sone)) {
1359                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
1360                         return;
1361                 }
1362                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1363                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
1364                         return;
1365                 }
1366
1367                 logger.log(Level.INFO, "Saving Sone: %s", sone);
1368                 try {
1369                         ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1370
1371                         /* save Sone into configuration. */
1372                         String sonePrefix = "Sone/" + sone.getId();
1373                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1374                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1375
1376                         /* save profile. */
1377                         Profile profile = sone.getProfile();
1378                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1379                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1380                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1381                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1382                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1383                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1384
1385                         /* save profile fields. */
1386                         int fieldCounter = 0;
1387                         for (Field profileField : profile.getFields()) {
1388                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1389                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1390                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1391                         }
1392                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1393
1394                         /* save posts. */
1395                         int postCounter = 0;
1396                         for (Post post : sone.getPosts()) {
1397                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1398                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1399                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
1400                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1401                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1402                         }
1403                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1404
1405                         /* save replies. */
1406                         int replyCounter = 0;
1407                         for (Reply reply : sone.getReplies()) {
1408                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1409                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1410                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1411                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1412                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1413                         }
1414                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1415
1416                         /* save post likes. */
1417                         int postLikeCounter = 0;
1418                         for (String postId : sone.getLikedPostIds()) {
1419                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1420                         }
1421                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1422
1423                         /* save reply likes. */
1424                         int replyLikeCounter = 0;
1425                         for (String replyId : sone.getLikedReplyIds()) {
1426                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1427                         }
1428                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1429
1430                         /* save friends. */
1431                         int friendCounter = 0;
1432                         for (String friendId : sone.getFriends()) {
1433                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1434                         }
1435                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1436
1437                         /* save albums. first, collect in a flat structure, top-level first. */
1438                         List<Album> albums = new ArrayList<Album>();
1439                         albums.addAll(sone.getAlbums());
1440                         int lastAlbumIndex = 0;
1441                         while (lastAlbumIndex < albums.size()) {
1442                                 int previousAlbumCount = albums.size();
1443                                 for (Album album : new ArrayList<Album>(albums.subList(lastAlbumIndex, albums.size()))) {
1444                                         albums.addAll(album.getAlbums());
1445                                 }
1446                                 lastAlbumIndex = previousAlbumCount;
1447                         }
1448
1449                         int albumCounter = 0;
1450                         for (Album album : albums) {
1451                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1452                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1453                                 configuration.getStringValue(albumPrefix + "/Name").setValue(album.getName());
1454                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1455                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
1456                         }
1457                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1458
1459                         /* save options. */
1460                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1461
1462                         configuration.save();
1463                         logger.log(Level.INFO, "Sone %s saved.", sone);
1464                 } catch (ConfigurationException ce1) {
1465                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
1466                 } catch (WebOfTrustException wote1) {
1467                         logger.log(Level.WARNING, "Could not set WoT property for Sone: " + sone, wote1);
1468                 }
1469         }
1470
1471         /**
1472          * Creates a new post.
1473          *
1474          * @param sone
1475          *            The Sone that creates the post
1476          * @param text
1477          *            The text of the post
1478          * @return The created post
1479          */
1480         public Post createPost(Sone sone, String text) {
1481                 return createPost(sone, System.currentTimeMillis(), text);
1482         }
1483
1484         /**
1485          * Creates a new post.
1486          *
1487          * @param sone
1488          *            The Sone that creates the post
1489          * @param time
1490          *            The time of the post
1491          * @param text
1492          *            The text of the post
1493          * @return The created post
1494          */
1495         public Post createPost(Sone sone, long time, String text) {
1496                 return createPost(sone, null, time, text);
1497         }
1498
1499         /**
1500          * Creates a new post.
1501          *
1502          * @param sone
1503          *            The Sone that creates the post
1504          * @param recipient
1505          *            The recipient Sone, or {@code null} if this post does not have
1506          *            a recipient
1507          * @param text
1508          *            The text of the post
1509          * @return The created post
1510          */
1511         public Post createPost(Sone sone, Sone recipient, String text) {
1512                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1513         }
1514
1515         /**
1516          * Creates a new post.
1517          *
1518          * @param sone
1519          *            The Sone that creates the post
1520          * @param recipient
1521          *            The recipient Sone, or {@code null} if this post does not have
1522          *            a recipient
1523          * @param time
1524          *            The time of the post
1525          * @param text
1526          *            The text of the post
1527          * @return The created post
1528          */
1529         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1530                 if (!isLocalSone(sone)) {
1531                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
1532                         return null;
1533                 }
1534                 Post post = new Post(sone, time, text);
1535                 if (recipient != null) {
1536                         post.setRecipient(recipient);
1537                 }
1538                 synchronized (posts) {
1539                         posts.put(post.getId(), post);
1540                 }
1541                 synchronized (newPosts) {
1542                         knownPosts.add(post.getId());
1543                 }
1544                 sone.addPost(post);
1545                 saveSone(sone);
1546                 return post;
1547         }
1548
1549         /**
1550          * Deletes the given post.
1551          *
1552          * @param post
1553          *            The post to delete
1554          */
1555         public void deletePost(Post post) {
1556                 if (!isLocalSone(post.getSone())) {
1557                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
1558                         return;
1559                 }
1560                 post.getSone().removePost(post);
1561                 synchronized (posts) {
1562                         posts.remove(post.getId());
1563                 }
1564                 saveSone(post.getSone());
1565         }
1566
1567         /**
1568          * Marks the given post as known, if it is currently a new post (according
1569          * to {@link #isNewPost(String)}).
1570          *
1571          * @param post
1572          *            The post to mark as known
1573          */
1574         public void markPostKnown(Post post) {
1575                 synchronized (newPosts) {
1576                         if (newPosts.remove(post.getId())) {
1577                                 knownPosts.add(post.getId());
1578                                 coreListenerManager.fireMarkPostKnown(post);
1579                                 saveConfiguration();
1580                         }
1581                 }
1582         }
1583
1584         /**
1585          * Bookmarks the given post.
1586          *
1587          * @param post
1588          *            The post to bookmark
1589          */
1590         public void bookmark(Post post) {
1591                 bookmarkPost(post.getId());
1592         }
1593
1594         /**
1595          * Bookmarks the post with the given ID.
1596          *
1597          * @param id
1598          *            The ID of the post to bookmark
1599          */
1600         public void bookmarkPost(String id) {
1601                 synchronized (bookmarkedPosts) {
1602                         bookmarkedPosts.add(id);
1603                 }
1604         }
1605
1606         /**
1607          * Removes the given post from the bookmarks.
1608          *
1609          * @param post
1610          *            The post to unbookmark
1611          */
1612         public void unbookmark(Post post) {
1613                 unbookmarkPost(post.getId());
1614         }
1615
1616         /**
1617          * Removes the post with the given ID from the bookmarks.
1618          *
1619          * @param id
1620          *            The ID of the post to unbookmark
1621          */
1622         public void unbookmarkPost(String id) {
1623                 synchronized (bookmarkedPosts) {
1624                         bookmarkedPosts.remove(id);
1625                 }
1626         }
1627
1628         /**
1629          * Creates a new reply.
1630          *
1631          * @param sone
1632          *            The Sone that creates the reply
1633          * @param post
1634          *            The post that this reply refers to
1635          * @param text
1636          *            The text of the reply
1637          * @return The created reply
1638          */
1639         public Reply createReply(Sone sone, Post post, String text) {
1640                 return createReply(sone, post, System.currentTimeMillis(), text);
1641         }
1642
1643         /**
1644          * Creates a new reply.
1645          *
1646          * @param sone
1647          *            The Sone that creates the reply
1648          * @param post
1649          *            The post that this reply refers to
1650          * @param time
1651          *            The time of the reply
1652          * @param text
1653          *            The text of the reply
1654          * @return The created reply
1655          */
1656         public Reply createReply(Sone sone, Post post, long time, String text) {
1657                 if (!isLocalSone(sone)) {
1658                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
1659                         return null;
1660                 }
1661                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
1662                 synchronized (replies) {
1663                         replies.put(reply.getId(), reply);
1664                 }
1665                 synchronized (newReplies) {
1666                         knownReplies.add(reply.getId());
1667                 }
1668                 sone.addReply(reply);
1669                 saveSone(sone);
1670                 return reply;
1671         }
1672
1673         /**
1674          * Deletes the given reply.
1675          *
1676          * @param reply
1677          *            The reply to delete
1678          */
1679         public void deleteReply(Reply reply) {
1680                 Sone sone = reply.getSone();
1681                 if (!isLocalSone(sone)) {
1682                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
1683                         return;
1684                 }
1685                 synchronized (replies) {
1686                         replies.remove(reply.getId());
1687                 }
1688                 sone.removeReply(reply);
1689                 saveSone(sone);
1690         }
1691
1692         /**
1693          * Marks the given reply as known, if it is currently a new reply (according
1694          * to {@link #isNewReply(String)}).
1695          *
1696          * @param reply
1697          *            The reply to mark as known
1698          */
1699         public void markReplyKnown(Reply reply) {
1700                 synchronized (newReplies) {
1701                         if (newReplies.remove(reply.getId())) {
1702                                 knownReplies.add(reply.getId());
1703                                 coreListenerManager.fireMarkReplyKnown(reply);
1704                                 saveConfiguration();
1705                         }
1706                 }
1707         }
1708
1709         /**
1710          * Creates a new top-level album for the given Sone.
1711          *
1712          * @param sone
1713          *            The Sone to create the album for
1714          * @return The new album
1715          */
1716         public Album createAlbum(Sone sone) {
1717                 return createAlbum(sone, null);
1718         }
1719
1720         /**
1721          * Creates a new album for the given Sone.
1722          *
1723          * @param sone
1724          *            The Sone to create the album for
1725          * @param parent
1726          *            The parent of the album (may be {@code null} to create a
1727          *            top-level album)
1728          * @return The new album
1729          */
1730         public Album createAlbum(Sone sone, Album parent) {
1731                 Album album = new Album();
1732                 synchronized (albums) {
1733                         albums.put(album.getId(), album);
1734                 }
1735                 album.setSone(sone);
1736                 if (parent != null) {
1737                         parent.addAlbum(album);
1738                 } else {
1739                         sone.addAlbum(album);
1740                 }
1741                 return album;
1742         }
1743
1744         /**
1745          * Starts the core.
1746          */
1747         public void start() {
1748                 loadConfiguration();
1749                 updateChecker.addUpdateListener(this);
1750                 updateChecker.start();
1751         }
1752
1753         /**
1754          * Stops the core.
1755          */
1756         public void stop() {
1757                 synchronized (localSones) {
1758                         for (SoneInserter soneInserter : soneInserters.values()) {
1759                                 soneInserter.stop();
1760                         }
1761                 }
1762                 updateChecker.stop();
1763                 updateChecker.removeUpdateListener(this);
1764                 soneDownloader.stop();
1765                 saveConfiguration();
1766                 stopped = true;
1767         }
1768
1769         /**
1770          * Saves the current options.
1771          */
1772         public void saveConfiguration() {
1773                 synchronized (configuration) {
1774                         if (storingConfiguration) {
1775                                 logger.log(Level.FINE, "Already storing configuration…");
1776                                 return;
1777                         }
1778                         storingConfiguration = true;
1779                 }
1780
1781                 /* store the options first. */
1782                 try {
1783                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1784                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1785                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1786                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1787                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1788                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
1789                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
1790                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
1791
1792                         /* save known Sones. */
1793                         int soneCounter = 0;
1794                         synchronized (newSones) {
1795                                 for (String knownSoneId : knownSones) {
1796                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1797                                 }
1798                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1799                         }
1800
1801                         /* save known posts. */
1802                         int postCounter = 0;
1803                         synchronized (newPosts) {
1804                                 for (String knownPostId : knownPosts) {
1805                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
1806                                 }
1807                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
1808                         }
1809
1810                         /* save known replies. */
1811                         int replyCounter = 0;
1812                         synchronized (newReplies) {
1813                                 for (String knownReplyId : knownReplies) {
1814                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
1815                                 }
1816                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
1817                         }
1818
1819                         /* save bookmarked posts. */
1820                         int bookmarkedPostCounter = 0;
1821                         synchronized (bookmarkedPosts) {
1822                                 for (String bookmarkedPostId : bookmarkedPosts) {
1823                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1824                                 }
1825                         }
1826                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1827
1828                         /* now save it. */
1829                         configuration.save();
1830
1831                 } catch (ConfigurationException ce1) {
1832                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1833                 } finally {
1834                         synchronized (configuration) {
1835                                 storingConfiguration = false;
1836                         }
1837                 }
1838         }
1839
1840         //
1841         // PRIVATE METHODS
1842         //
1843
1844         /**
1845          * Loads the configuration.
1846          */
1847         @SuppressWarnings("unchecked")
1848         private void loadConfiguration() {
1849                 /* create options. */
1850                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
1851
1852                         @Override
1853                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1854                                 SoneInserter.setInsertionDelay(newValue);
1855                         }
1856
1857                 }));
1858                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75));
1859                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-100));
1860                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1861                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
1862                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
1863                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
1864
1865                 /* read options from configuration. */
1866                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
1867                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
1868                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
1869                 options.getBooleanOption("ClearOnNextRestart").set(null);
1870                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
1871                 if (clearConfiguration) {
1872                         /* stop loading the configuration. */
1873                         return;
1874                 }
1875
1876                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
1877                 options.getIntegerOption("PositiveTrust").set(configuration.getIntValue("Option/PositiveTrust").getValue(null));
1878                 options.getIntegerOption("NegativeTrust").set(configuration.getIntValue("Option/NegativeTrust").getValue(null));
1879                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1880                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
1881
1882                 /* load known Sones. */
1883                 int soneCounter = 0;
1884                 while (true) {
1885                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1886                         if (knownSoneId == null) {
1887                                 break;
1888                         }
1889                         synchronized (newSones) {
1890                                 knownSones.add(knownSoneId);
1891                         }
1892                 }
1893
1894                 /* load known posts. */
1895                 int postCounter = 0;
1896                 while (true) {
1897                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
1898                         if (knownPostId == null) {
1899                                 break;
1900                         }
1901                         synchronized (newPosts) {
1902                                 knownPosts.add(knownPostId);
1903                         }
1904                 }
1905
1906                 /* load known replies. */
1907                 int replyCounter = 0;
1908                 while (true) {
1909                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
1910                         if (knownReplyId == null) {
1911                                 break;
1912                         }
1913                         synchronized (newReplies) {
1914                                 knownReplies.add(knownReplyId);
1915                         }
1916                 }
1917
1918                 /* load bookmarked posts. */
1919                 int bookmarkedPostCounter = 0;
1920                 while (true) {
1921                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1922                         if (bookmarkedPostId == null) {
1923                                 break;
1924                         }
1925                         synchronized (bookmarkedPosts) {
1926                                 bookmarkedPosts.add(bookmarkedPostId);
1927                         }
1928                 }
1929
1930         }
1931
1932         /**
1933          * Generate a Sone URI from the given URI and latest edition.
1934          *
1935          * @param uriString
1936          *            The URI to derive the Sone URI from
1937          * @return The derived URI
1938          */
1939         private FreenetURI getSoneUri(String uriString) {
1940                 try {
1941                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
1942                         return uri;
1943                 } catch (MalformedURLException mue1) {
1944                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
1945                         return null;
1946                 }
1947         }
1948
1949         //
1950         // INTERFACE IdentityListener
1951         //
1952
1953         /**
1954          * {@inheritDoc}
1955          */
1956         @Override
1957         public void ownIdentityAdded(OwnIdentity ownIdentity) {
1958                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
1959                 if (ownIdentity.hasContext("Sone")) {
1960                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
1961                         addLocalSone(ownIdentity);
1962                 }
1963         }
1964
1965         /**
1966          * {@inheritDoc}
1967          */
1968         @Override
1969         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
1970                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
1971                 trustedIdentities.remove(ownIdentity);
1972         }
1973
1974         /**
1975          * {@inheritDoc}
1976          */
1977         @Override
1978         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
1979                 logger.log(Level.FINEST, "Adding Identity: " + identity);
1980                 trustedIdentities.get(ownIdentity).add(identity);
1981                 addRemoteSone(identity);
1982         }
1983
1984         /**
1985          * {@inheritDoc}
1986          */
1987         @Override
1988         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
1989                 new Thread(new Runnable() {
1990
1991                         @Override
1992                         @SuppressWarnings("synthetic-access")
1993                         public void run() {
1994                                 Sone sone = getRemoteSone(identity.getId());
1995                                 sone.setIdentity(identity);
1996                                 soneDownloader.addSone(sone);
1997                                 soneDownloader.fetchSone(sone);
1998                         }
1999                 }).start();
2000         }
2001
2002         /**
2003          * {@inheritDoc}
2004          */
2005         @Override
2006         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
2007                 trustedIdentities.get(ownIdentity).remove(identity);
2008         }
2009
2010         //
2011         // INTERFACE UpdateListener
2012         //
2013
2014         /**
2015          * {@inheritDoc}
2016          */
2017         @Override
2018         public void updateFound(Version version, long releaseTime, long latestEdition) {
2019                 coreListenerManager.fireUpdateFound(version, releaseTime, latestEdition);
2020         }
2021
2022         /**
2023          * Convenience interface for external classes that want to access the core’s
2024          * configuration.
2025          *
2026          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
2027          */
2028         public static class Preferences {
2029
2030                 /** The wrapped options. */
2031                 private final Options options;
2032
2033                 /**
2034                  * Creates a new preferences object wrapped around the given options.
2035                  *
2036                  * @param options
2037                  *            The options to wrap
2038                  */
2039                 public Preferences(Options options) {
2040                         this.options = options;
2041                 }
2042
2043                 /**
2044                  * Returns the insertion delay.
2045                  *
2046                  * @return The insertion delay
2047                  */
2048                 public int getInsertionDelay() {
2049                         return options.getIntegerOption("InsertionDelay").get();
2050                 }
2051
2052                 /**
2053                  * Sets the insertion delay
2054                  *
2055                  * @param insertionDelay
2056                  *            The new insertion delay, or {@code null} to restore it to
2057                  *            the default value
2058                  * @return This preferences
2059                  */
2060                 public Preferences setInsertionDelay(Integer insertionDelay) {
2061                         options.getIntegerOption("InsertionDelay").set(insertionDelay);
2062                         return this;
2063                 }
2064
2065                 /**
2066                  * Returns the positive trust.
2067                  *
2068                  * @return The positive trust
2069                  */
2070                 public int getPositiveTrust() {
2071                         return options.getIntegerOption("PositiveTrust").get();
2072                 }
2073
2074                 /**
2075                  * Sets the positive trust.
2076                  *
2077                  * @param positiveTrust
2078                  *            The new positive trust, or {@code null} to restore it to
2079                  *            the default vlaue
2080                  * @return This preferences
2081                  */
2082                 public Preferences setPositiveTrust(Integer positiveTrust) {
2083                         options.getIntegerOption("PositiveTrust").set(positiveTrust);
2084                         return this;
2085                 }
2086
2087                 /**
2088                  * Returns the negative trust.
2089                  *
2090                  * @return The negative trust
2091                  */
2092                 public int getNegativeTrust() {
2093                         return options.getIntegerOption("NegativeTrust").get();
2094                 }
2095
2096                 /**
2097                  * Sets the negative trust.
2098                  *
2099                  * @param negativeTrust
2100                  *            The negative trust, or {@code null} to restore it to the
2101                  *            default value
2102                  * @return The preferences
2103                  */
2104                 public Preferences setNegativeTrust(Integer negativeTrust) {
2105                         options.getIntegerOption("NegativeTrust").set(negativeTrust);
2106                         return this;
2107                 }
2108
2109                 /**
2110                  * Returns the trust comment. This is the comment that is set in the web
2111                  * of trust when a trust value is assigned to an identity.
2112                  *
2113                  * @return The trust comment
2114                  */
2115                 public String getTrustComment() {
2116                         return options.getStringOption("TrustComment").get();
2117                 }
2118
2119                 /**
2120                  * Sets the trust comment.
2121                  *
2122                  * @param trustComment
2123                  *            The trust comment, or {@code null} to restore it to the
2124                  *            default value
2125                  * @return This preferences
2126                  */
2127                 public Preferences setTrustComment(String trustComment) {
2128                         options.getStringOption("TrustComment").set(trustComment);
2129                         return this;
2130                 }
2131
2132                 /**
2133                  * Returns whether the rescue mode is active.
2134                  *
2135                  * @return {@code true} if the rescue mode is active, {@code false}
2136                  *         otherwise
2137                  */
2138                 public boolean isSoneRescueMode() {
2139                         return options.getBooleanOption("SoneRescueMode").get();
2140                 }
2141
2142                 /**
2143                  * Sets whether the rescue mode is active.
2144                  *
2145                  * @param soneRescueMode
2146                  *            {@code true} if the rescue mode is active, {@code false}
2147                  *            otherwise
2148                  * @return This preferences
2149                  */
2150                 public Preferences setSoneRescueMode(Boolean soneRescueMode) {
2151                         options.getBooleanOption("SoneRescueMode").set(soneRescueMode);
2152                         return this;
2153                 }
2154
2155                 /**
2156                  * Returns whether Sone should clear its settings on the next restart.
2157                  * In order to be effective, {@link #isReallyClearOnNextRestart()} needs
2158                  * to return {@code true} as well!
2159                  *
2160                  * @return {@code true} if Sone should clear its settings on the next
2161                  *         restart, {@code false} otherwise
2162                  */
2163                 public boolean isClearOnNextRestart() {
2164                         return options.getBooleanOption("ClearOnNextRestart").get();
2165                 }
2166
2167                 /**
2168                  * Sets whether Sone will clear its settings on the next restart.
2169                  *
2170                  * @param clearOnNextRestart
2171                  *            {@code true} if Sone should clear its settings on the next
2172                  *            restart, {@code false} otherwise
2173                  * @return This preferences
2174                  */
2175                 public Preferences setClearOnNextRestart(Boolean clearOnNextRestart) {
2176                         options.getBooleanOption("ClearOnNextRestart").set(clearOnNextRestart);
2177                         return this;
2178                 }
2179
2180                 /**
2181                  * Returns whether Sone should really clear its settings on next
2182                  * restart. This is a confirmation option that needs to be set in
2183                  * addition to {@link #isClearOnNextRestart()} in order to clear Sone’s
2184                  * settings on the next restart.
2185                  *
2186                  * @return {@code true} if Sone should really clear its settings on the
2187                  *         next restart, {@code false} otherwise
2188                  */
2189                 public boolean isReallyClearOnNextRestart() {
2190                         return options.getBooleanOption("ReallyClearOnNextRestart").get();
2191                 }
2192
2193                 /**
2194                  * Sets whether Sone should really clear its settings on the next
2195                  * restart.
2196                  *
2197                  * @param reallyClearOnNextRestart
2198                  *            {@code true} if Sone should really clear its settings on
2199                  *            the next restart, {@code false} otherwise
2200                  * @return This preferences
2201                  */
2202                 public Preferences setReallyClearOnNextRestart(Boolean reallyClearOnNextRestart) {
2203                         options.getBooleanOption("ReallyClearOnNextRestart").set(reallyClearOnNextRestart);
2204                         return this;
2205                 }
2206
2207         }
2208
2209 }