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.Map.Entry;
  29 import java.util.concurrent.ExecutorService;
  30 import java.util.concurrent.Executors;
  31 import java.util.logging.Level;
  32 import java.util.logging.Logger;
  33
  34 import net.pterodactylus.sone.core.Options.DefaultOption;
  35 import net.pterodactylus.sone.core.Options.Option;
  36 import net.pterodactylus.sone.core.Options.OptionWatcher;
  37 import net.pterodactylus.sone.data.Client;
  38 import net.pterodactylus.sone.data.Post;
  39 import net.pterodactylus.sone.data.Profile;
  40 import net.pterodactylus.sone.data.Profile.Field;
  41 import net.pterodactylus.sone.data.Reply;
  42 import net.pterodactylus.sone.data.Sone;
  43 import net.pterodactylus.sone.fcp.FcpInterface;
  44 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  45 import net.pterodactylus.sone.freenet.wot.Identity;
  46 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  47 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  48 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  49 import net.pterodactylus.sone.freenet.wot.Trust;
  50 import net.pterodactylus.sone.freenet.wot.WebOfTrustException;
  51 import net.pterodactylus.sone.main.SonePlugin;
  52 import net.pterodactylus.util.config.Configuration;
  53 import net.pterodactylus.util.config.ConfigurationException;
  54 import net.pterodactylus.util.logging.Logging;
  55 import net.pterodactylus.util.number.Numbers;
  56 import net.pterodactylus.util.service.AbstractService;
  57 import net.pterodactylus.util.thread.Ticker;
  58 import net.pterodactylus.util.validation.EqualityValidator;
  59 import net.pterodactylus.util.validation.IntegerRangeValidator;
  60 import net.pterodactylus.util.validation.OrValidator;
  61 import net.pterodactylus.util.validation.Validation;
  62 import net.pterodactylus.util.version.Version;
  63 import freenet.keys.FreenetURI;
  64
  65 /**
  66  * The Sone core.
  67  *
  68  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  69  */
  70 public class Core extends AbstractService implements IdentityListener, UpdateListener, SoneProvider, PostProvider, SoneInsertListener {
  71
  72         /**
  73          * Enumeration for the possible states of a {@link Sone}.
  74          *
  75          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  76          */
  77         public enum SoneStatus {
  78
  79                 /** The Sone is unknown, i.e. not yet downloaded. */
  80                 unknown,
  81
  82                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  83                 idle,
  84
  85                 /** The Sone is currently being inserted. */
  86                 inserting,
  87
  88                 /** The Sone is currently being downloaded. */
  89                 downloading,
  90         }
  91
  92         /** The logger. */
  93         private static final Logger logger = Logging.getLogger(Core.class);
  94
  95         /** The options. */
  96         private final Options options = new Options();
  97
  98         /** The preferences. */
  99         private final Preferences preferences = new Preferences(options);
 100
 101         /** The core listener manager. */
 102         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
 103
 104         /** The configuration. */
 105         private Configuration configuration;
 106
 107         /** Whether we’re currently saving the configuration. */
 108         private boolean storingConfiguration = false;
 109
 110         /** The identity manager. */
 111         private final IdentityManager identityManager;
 112
 113         /** Interface to freenet. */
 114         private final FreenetInterface freenetInterface;
 115
 116         /** The Sone downloader. */
 117         private final SoneDownloader soneDownloader;
 118
 119         /** Sone downloader thread-pool. */
 120         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10);
 121
 122         /** The update checker. */
 123         private final UpdateChecker updateChecker;
 124
 125         /** The FCP interface. */
 126         private volatile FcpInterface fcpInterface;
 127
 128         /** The Sones’ statuses. */
 129         /* synchronize access on itself. */
 130         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
 131
 132         /** Locked local Sones. */
 133         /* synchronize on itself. */
 134         private final Set<Sone> lockedSones = new HashSet<Sone>();
 135
 136         /** Sone inserters. */
 137         /* synchronize access on this on localSones. */
 138         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 139
 140         /** Sone rescuers. */
 141         /* synchronize access on this on localSones. */
 142         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 143
 144         /** All local Sones. */
 145         /* synchronize access on this on itself. */
 146         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 147
 148         /** All remote Sones. */
 149         /* synchronize access on this on itself. */
 150         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 151
 152         /** All new Sones. */
 153         private Set<String> newSones = new HashSet<String>();
 154
 155         /** All known Sones. */
 156         /* synchronize access on {@link #newSones}. */
 157         private Set<String> knownSones = new HashSet<String>();
 158
 159         /** All posts. */
 160         private Map<String, Post> posts = new HashMap<String, Post>();
 161
 162         /** All new posts. */
 163         private Set<String> newPosts = new HashSet<String>();
 164
 165         /** All known posts. */
 166         /* synchronize access on {@link #newPosts}. */
 167         private Set<String> knownPosts = new HashSet<String>();
 168
 169         /** All replies. */
 170         private Map<String, Reply> replies = new HashMap<String, Reply>();
 171
 172         /** All new replies. */
 173         private Set<String> newReplies = new HashSet<String>();
 174
 175         /** All known replies. */
 176         private Set<String> knownReplies = new HashSet<String>();
 177
 178         /** All bookmarked posts. */
 179         /* synchronize access on itself. */
 180         private Set<String> bookmarkedPosts = new HashSet<String>();
 181
 182         /** Trusted identities, sorted by own identities. */
 183         private Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 184
 185         /** Ticker for threads that mark own elements as known. */
 186         private Ticker localElementTicker = new Ticker();
 187
 188         /** The time the configuration was last touched. */
 189         private volatile long lastConfigurationUpdate;
 190
 191         /**
 192          * Creates a new core.
 193          *
 194          * @param configuration
 195          *            The configuration of the core
 196          * @param freenetInterface
 197          *            The freenet interface
 198          * @param identityManager
 199          *            The identity manager
 200          */
 201         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 202                 super("Sone Core");
 203                 this.configuration = configuration;
 204                 this.freenetInterface = freenetInterface;
 205                 this.identityManager = identityManager;
 206                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 207                 this.updateChecker = new UpdateChecker(freenetInterface);
 208         }
 209
 210         //
 211         // LISTENER MANAGEMENT
 212         //
 213
 214         /**
 215          * Adds a new core listener.
 216          *
 217          * @param coreListener
 218          *            The listener to add
 219          */
 220         public void addCoreListener(CoreListener coreListener) {
 221                 coreListenerManager.addListener(coreListener);
 222         }
 223
 224         /**
 225          * Removes a core listener.
 226          *
 227          * @param coreListener
 228          *            The listener to remove
 229          */
 230         public void removeCoreListener(CoreListener coreListener) {
 231                 coreListenerManager.removeListener(coreListener);
 232         }
 233
 234         //
 235         // ACCESSORS
 236         //
 237
 238         /**
 239          * Sets the configuration to use. This will automatically save the current
 240          * configuration to the given configuration.
 241          *
 242          * @param configuration
 243          *            The new configuration to use
 244          */
 245         public void setConfiguration(Configuration configuration) {
 246                 this.configuration = configuration;
 247                 touchConfiguration();
 248         }
 249
 250         /**
 251          * Returns the options used by the core.
 252          *
 253          * @return The options of the core
 254          */
 255         public Preferences getPreferences() {
 256                 return preferences;
 257         }
 258
 259         /**
 260          * Returns the identity manager used by the core.
 261          *
 262          * @return The identity manager
 263          */
 264         public IdentityManager getIdentityManager() {
 265                 return identityManager;
 266         }
 267
 268         /**
 269          * Returns the update checker.
 270          *
 271          * @return The update checker
 272          */
 273         public UpdateChecker getUpdateChecker() {
 274                 return updateChecker;
 275         }
 276
 277         /**
 278          * Sets the FCP interface to use.
 279          *
 280          * @param fcpInterface
 281          *            The FCP interface to use
 282          */
 283         public void setFcpInterface(FcpInterface fcpInterface) {
 284                 this.fcpInterface = fcpInterface;
 285         }
 286
 287         /**
 288          * Returns the status of the given Sone.
 289          *
 290          * @param sone
 291          *            The Sone to get the status for
 292          * @return The status of the Sone
 293          */
 294         public SoneStatus getSoneStatus(Sone sone) {
 295                 synchronized (soneStatuses) {
 296                         return soneStatuses.get(sone);
 297                 }
 298         }
 299
 300         /**
 301          * Sets the status of the given Sone.
 302          *
 303          * @param sone
 304          *            The Sone to set the status of
 305          * @param soneStatus
 306          *            The status to set
 307          */
 308         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 309                 synchronized (soneStatuses) {
 310                         soneStatuses.put(sone, soneStatus);
 311                 }
 312         }
 313
 314         /**
 315          * Returns the Sone rescuer for the given local Sone.
 316          *
 317          * @param sone
 318          *            The local Sone to get the rescuer for
 319          * @return The Sone rescuer for the given Sone
 320          */
 321         public SoneRescuer getSoneRescuer(Sone sone) {
 322                 Validation.begin().isNotNull("Sone", sone).check().is("Local Sone", isLocalSone(sone)).check();
 323                 synchronized (localSones) {
 324                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 325                         if (soneRescuer == null) {
 326                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 327                                 soneRescuers.put(sone, soneRescuer);
 328                                 soneRescuer.start();
 329                         }
 330                         return soneRescuer;
 331                 }
 332         }
 333
 334         /**
 335          * Returns whether the given Sone is currently locked.
 336          *
 337          * @param sone
 338          *            The sone to check
 339          * @return {@code true} if the Sone is locked, {@code false} if it is not
 340          */
 341         public boolean isLocked(Sone sone) {
 342                 synchronized (lockedSones) {
 343                         return lockedSones.contains(sone);
 344                 }
 345         }
 346
 347         /**
 348          * Returns all Sones, remote and local.
 349          *
 350          * @return All Sones
 351          */
 352         public Set<Sone> getSones() {
 353                 Set<Sone> allSones = new HashSet<Sone>();
 354                 allSones.addAll(getLocalSones());
 355                 allSones.addAll(getRemoteSones());
 356                 return allSones;
 357         }
 358
 359         /**
 360          * Returns the Sone with the given ID, regardless whether it’s local or
 361          * remote.
 362          *
 363          * @param id
 364          *            The ID of the Sone to get
 365          * @return The Sone with the given ID, or {@code null} if there is no such
 366          *         Sone
 367          */
 368         public Sone getSone(String id) {
 369                 return getSone(id, true);
 370         }
 371
 372         /**
 373          * Returns the Sone with the given ID, regardless whether it’s local or
 374          * remote.
 375          *
 376          * @param id
 377          *            The ID of the Sone to get
 378          * @param create
 379          *            {@code true} to create a new Sone if none exists,
 380          *            {@code false} to return {@code null} if a Sone with the given
 381          *            ID does not exist
 382          * @return The Sone with the given ID, or {@code null} if there is no such
 383          *         Sone
 384          */
 385         @Override
 386         public Sone getSone(String id, boolean create) {
 387                 if (isLocalSone(id)) {
 388                         return getLocalSone(id);
 389                 }
 390                 return getRemoteSone(id, create);
 391         }
 392
 393         /**
 394          * Checks whether the core knows a Sone with the given ID.
 395          *
 396          * @param id
 397          *            The ID of the Sone
 398          * @return {@code true} if there is a Sone with the given ID, {@code false}
 399          *         otherwise
 400          */
 401         public boolean hasSone(String id) {
 402                 return isLocalSone(id) || isRemoteSone(id);
 403         }
 404
 405         /**
 406          * Returns whether the given Sone is a local Sone.
 407          *
 408          * @param sone
 409          *            The Sone to check for its locality
 410          * @return {@code true} if the given Sone is local, {@code false} otherwise
 411          */
 412         public boolean isLocalSone(Sone sone) {
 413                 synchronized (localSones) {
 414                         return localSones.containsKey(sone.getId());
 415                 }
 416         }
 417
 418         /**
 419          * Returns whether the given ID is the ID of a local Sone.
 420          *
 421          * @param id
 422          *            The Sone ID to check for its locality
 423          * @return {@code true} if the given ID is a local Sone, {@code false}
 424          *         otherwise
 425          */
 426         public boolean isLocalSone(String id) {
 427                 synchronized (localSones) {
 428                         return localSones.containsKey(id);
 429                 }
 430         }
 431
 432         /**
 433          * Returns all local Sones.
 434          *
 435          * @return All local Sones
 436          */
 437         public Set<Sone> getLocalSones() {
 438                 synchronized (localSones) {
 439                         return new HashSet<Sone>(localSones.values());
 440                 }
 441         }
 442
 443         /**
 444          * Returns the local Sone with the given ID.
 445          *
 446          * @param id
 447          *            The ID of the Sone to get
 448          * @return The Sone with the given ID
 449          */
 450         public Sone getLocalSone(String id) {
 451                 return getLocalSone(id, true);
 452         }
 453
 454         /**
 455          * Returns the local Sone with the given ID, optionally creating a new Sone.
 456          *
 457          * @param id
 458          *            The ID of the Sone
 459          * @param create
 460          *            {@code true} to create a new Sone if none exists,
 461          *            {@code false} to return null if none exists
 462          * @return The Sone with the given ID, or {@code null}
 463          */
 464         public Sone getLocalSone(String id, boolean create) {
 465                 synchronized (localSones) {
 466                         Sone sone = localSones.get(id);
 467                         if ((sone == null) && create) {
 468                                 sone = new Sone(id);
 469                                 localSones.put(id, sone);
 470                                 setSoneStatus(sone, SoneStatus.unknown);
 471                         }
 472                         return sone;
 473                 }
 474         }
 475
 476         /**
 477          * Returns all remote Sones.
 478          *
 479          * @return All remote Sones
 480          */
 481         public Set<Sone> getRemoteSones() {
 482                 synchronized (remoteSones) {
 483                         return new HashSet<Sone>(remoteSones.values());
 484                 }
 485         }
 486
 487         /**
 488          * Returns the remote Sone with the given ID.
 489          *
 490          * @param id
 491          *            The ID of the remote Sone to get
 492          * @return The Sone with the given ID
 493          */
 494         public Sone getRemoteSone(String id) {
 495                 return getRemoteSone(id, true);
 496         }
 497
 498         /**
 499          * Returns the remote Sone with the given ID.
 500          *
 501          * @param id
 502          *            The ID of the remote Sone to get
 503          * @param create
 504          *            {@code true} to always create a Sone, {@code false} to return
 505          *            {@code null} if no Sone with the given ID exists
 506          * @return The Sone with the given ID
 507          */
 508         public Sone getRemoteSone(String id, boolean create) {
 509                 synchronized (remoteSones) {
 510                         Sone sone = remoteSones.get(id);
 511                         if ((sone == null) && create) {
 512                                 sone = new Sone(id);
 513                                 remoteSones.put(id, sone);
 514                                 setSoneStatus(sone, SoneStatus.unknown);
 515                         }
 516                         return sone;
 517                 }
 518         }
 519
 520         /**
 521          * Returns whether the given Sone is a remote Sone.
 522          *
 523          * @param sone
 524          *            The Sone to check
 525          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 526          *         otherwise
 527          */
 528         public boolean isRemoteSone(Sone sone) {
 529                 synchronized (remoteSones) {
 530                         return remoteSones.containsKey(sone.getId());
 531                 }
 532         }
 533
 534         /**
 535          * Returns whether the Sone with the given ID is a remote Sone.
 536          *
 537          * @param id
 538          *            The ID of the Sone to check
 539          * @return {@code true} if the Sone with the given ID is a remote Sone,
 540          *         {@code false} otherwise
 541          */
 542         public boolean isRemoteSone(String id) {
 543                 synchronized (remoteSones) {
 544                         return remoteSones.containsKey(id);
 545                 }
 546         }
 547
 548         /**
 549          * Returns whether the Sone with the given ID is a new Sone.
 550          *
 551          * @param soneId
 552          *            The ID of the sone to check for
 553          * @return {@code true} if the given Sone is new, false otherwise
 554          */
 555         public boolean isNewSone(String soneId) {
 556                 synchronized (newSones) {
 557                         return !knownSones.contains(soneId) && newSones.contains(soneId);
 558                 }
 559         }
 560
 561         /**
 562          * Returns whether the given Sone has been modified.
 563          *
 564          * @param sone
 565          *            The Sone to check for modifications
 566          * @return {@code true} if a modification has been detected in the Sone,
 567          *         {@code false} otherwise
 568          */
 569         public boolean isModifiedSone(Sone sone) {
 570                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 571         }
 572
 573         /**
 574          * Returns whether the target Sone is trusted by the origin Sone.
 575          *
 576          * @param origin
 577          *            The origin Sone
 578          * @param target
 579          *            The target Sone
 580          * @return {@code true} if the target Sone is trusted by the origin Sone
 581          */
 582         public boolean isSoneTrusted(Sone origin, Sone target) {
 583                 Validation.begin().isNotNull("Origin", origin).isNotNull("Target", target).check().isInstanceOf("Origin’s OwnIdentity", origin.getIdentity(), OwnIdentity.class).check();
 584                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 585         }
 586
 587         /**
 588          * Returns the post with the given ID.
 589          *
 590          * @param postId
 591          *            The ID of the post to get
 592          * @return The post with the given ID, or a new post with the given ID
 593          */
 594         public Post getPost(String postId) {
 595                 return getPost(postId, true);
 596         }
 597
 598         /**
 599          * Returns the post with the given ID, optionally creating a new post.
 600          *
 601          * @param postId
 602          *            The ID of the post to get
 603          * @param create
 604          *            {@code true} it create a new post if no post with the given ID
 605          *            exists, {@code false} to return {@code null}
 606          * @return The post, or {@code null} if there is no such post
 607          */
 608         @Override
 609         public Post getPost(String postId, boolean create) {
 610                 synchronized (posts) {
 611                         Post post = posts.get(postId);
 612                         if ((post == null) && create) {
 613                                 post = new Post(postId);
 614                                 posts.put(postId, post);
 615                         }
 616                         return post;
 617                 }
 618         }
 619
 620         /**
 621          * Returns whether the given post ID is new.
 622          *
 623          * @param postId
 624          *            The post ID
 625          * @return {@code true} if the post is considered to be new, {@code false}
 626          *         otherwise
 627          */
 628         public boolean isNewPost(String postId) {
 629                 synchronized (newPosts) {
 630                         return !knownPosts.contains(postId) && newPosts.contains(postId);
 631                 }
 632         }
 633
 634         /**
 635          * Returns all posts that have the given Sone as recipient.
 636          *
 637          * @see Post#getRecipient()
 638          * @param recipient
 639          *            The recipient of the posts
 640          * @return All posts that have the given Sone as recipient
 641          */
 642         public Set<Post> getDirectedPosts(Sone recipient) {
 643                 Validation.begin().isNotNull("Recipient", recipient).check();
 644                 Set<Post> directedPosts = new HashSet<Post>();
 645                 synchronized (posts) {
 646                         for (Post post : posts.values()) {
 647                                 if (recipient.equals(post.getRecipient())) {
 648                                         directedPosts.add(post);
 649                                 }
 650                         }
 651                 }
 652                 return directedPosts;
 653         }
 654
 655         /**
 656          * Returns the reply with the given ID. If there is no reply with the given
 657          * ID yet, a new one is created.
 658          *
 659          * @param replyId
 660          *            The ID of the reply to get
 661          * @return The reply
 662          */
 663         public Reply getReply(String replyId) {
 664                 return getReply(replyId, true);
 665         }
 666
 667         /**
 668          * Returns the reply with the given ID. If there is no reply with the given
 669          * ID yet, a new one is created, unless {@code create} is false in which
 670          * case {@code null} is returned.
 671          *
 672          * @param replyId
 673          *            The ID of the reply to get
 674          * @param create
 675          *            {@code true} to always return a {@link Reply}, {@code false}
 676          *            to return {@code null} if no reply can be found
 677          * @return The reply, or {@code null} if there is no such reply
 678          */
 679         public Reply getReply(String replyId, boolean create) {
 680                 synchronized (replies) {
 681                         Reply reply = replies.get(replyId);
 682                         if (create && (reply == null)) {
 683                                 reply = new Reply(replyId);
 684                                 replies.put(replyId, reply);
 685                         }
 686                         return reply;
 687                 }
 688         }
 689
 690         /**
 691          * Returns all replies for the given post, order ascending by time.
 692          *
 693          * @param post
 694          *            The post to get all replies for
 695          * @return All replies for the given post
 696          */
 697         public List<Reply> getReplies(Post post) {
 698                 Set<Sone> sones = getSones();
 699                 List<Reply> replies = new ArrayList<Reply>();
 700                 for (Sone sone : sones) {
 701                         for (Reply reply : sone.getReplies()) {
 702                                 if (reply.getPost().equals(post)) {
 703                                         replies.add(reply);
 704                                 }
 705                         }
 706                 }
 707                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 708                 return replies;
 709         }
 710
 711         /**
 712          * Returns whether the reply with the given ID is new.
 713          *
 714          * @param replyId
 715          *            The ID of the reply to check
 716          * @return {@code true} if the reply is considered to be new, {@code false}
 717          *         otherwise
 718          */
 719         public boolean isNewReply(String replyId) {
 720                 synchronized (newReplies) {
 721                         return !knownReplies.contains(replyId) && newReplies.contains(replyId);
 722                 }
 723         }
 724
 725         /**
 726          * Returns all Sones that have liked the given post.
 727          *
 728          * @param post
 729          *            The post to get the liking Sones for
 730          * @return The Sones that like the given post
 731          */
 732         public Set<Sone> getLikes(Post post) {
 733                 Set<Sone> sones = new HashSet<Sone>();
 734                 for (Sone sone : getSones()) {
 735                         if (sone.getLikedPostIds().contains(post.getId())) {
 736                                 sones.add(sone);
 737                         }
 738                 }
 739                 return sones;
 740         }
 741
 742         /**
 743          * Returns all Sones that have liked the given reply.
 744          *
 745          * @param reply
 746          *            The reply to get the liking Sones for
 747          * @return The Sones that like the given reply
 748          */
 749         public Set<Sone> getLikes(Reply reply) {
 750                 Set<Sone> sones = new HashSet<Sone>();
 751                 for (Sone sone : getSones()) {
 752                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 753                                 sones.add(sone);
 754                         }
 755                 }
 756                 return sones;
 757         }
 758
 759         /**
 760          * Returns whether the given post is bookmarked.
 761          *
 762          * @param post
 763          *            The post to check
 764          * @return {@code true} if the given post is bookmarked, {@code false}
 765          *         otherwise
 766          */
 767         public boolean isBookmarked(Post post) {
 768                 return isPostBookmarked(post.getId());
 769         }
 770
 771         /**
 772          * Returns whether the post with the given ID is bookmarked.
 773          *
 774          * @param id
 775          *            The ID of the post to check
 776          * @return {@code true} if the post with the given ID is bookmarked,
 777          *         {@code false} otherwise
 778          */
 779         public boolean isPostBookmarked(String id) {
 780                 synchronized (bookmarkedPosts) {
 781                         return bookmarkedPosts.contains(id);
 782                 }
 783         }
 784
 785         /**
 786          * Returns all currently known bookmarked posts.
 787          *
 788          * @return All bookmarked posts
 789          */
 790         public Set<Post> getBookmarkedPosts() {
 791                 Set<Post> posts = new HashSet<Post>();
 792                 synchronized (bookmarkedPosts) {
 793                         for (String bookmarkedPostId : bookmarkedPosts) {
 794                                 Post post = getPost(bookmarkedPostId, false);
 795                                 if (post != null) {
 796                                         posts.add(post);
 797                                 }
 798                         }
 799                 }
 800                 return posts;
 801         }
 802
 803         //
 804         // ACTIONS
 805         //
 806
 807         /**
 808          * Locks the given Sone. A locked Sone will not be inserted by
 809          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 810          * again.
 811          *
 812          * @param sone
 813          *            The sone to lock
 814          */
 815         public void lockSone(Sone sone) {
 816                 synchronized (lockedSones) {
 817                         if (lockedSones.add(sone)) {
 818                                 coreListenerManager.fireSoneLocked(sone);
 819                         }
 820                 }
 821         }
 822
 823         /**
 824          * Unlocks the given Sone.
 825          *
 826          * @see #lockSone(Sone)
 827          * @param sone
 828          *            The sone to unlock
 829          */
 830         public void unlockSone(Sone sone) {
 831                 synchronized (lockedSones) {
 832                         if (lockedSones.remove(sone)) {
 833                                 coreListenerManager.fireSoneUnlocked(sone);
 834                         }
 835                 }
 836         }
 837
 838         /**
 839          * Adds a local Sone from the given ID which has to be the ID of an own
 840          * identity.
 841          *
 842          * @param id
 843          *            The ID of an own identity to add a Sone for
 844          * @return The added (or already existing) Sone
 845          */
 846         public Sone addLocalSone(String id) {
 847                 synchronized (localSones) {
 848                         if (localSones.containsKey(id)) {
 849                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 850                                 return localSones.get(id);
 851                         }
 852                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 853                         if (ownIdentity == null) {
 854                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 855                                 return null;
 856                         }
 857                         return addLocalSone(ownIdentity);
 858                 }
 859         }
 860
 861         /**
 862          * Adds a local Sone from the given own identity.
 863          *
 864          * @param ownIdentity
 865          *            The own identity to create a Sone from
 866          * @return The added (or already existing) Sone
 867          */
 868         public Sone addLocalSone(OwnIdentity ownIdentity) {
 869                 if (ownIdentity == null) {
 870                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 871                         return null;
 872                 }
 873                 synchronized (localSones) {
 874                         final Sone sone;
 875                         try {
 876                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 877                         } catch (MalformedURLException mue1) {
 878                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 879                                 return null;
 880                         }
 881                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 882                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 883                         /* TODO - load posts ’n stuff */
 884                         localSones.put(ownIdentity.getId(), sone);
 885                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 886                         soneInserter.addSoneInsertListener(this);
 887                         soneInserters.put(sone, soneInserter);
 888                         setSoneStatus(sone, SoneStatus.idle);
 889                         loadSone(sone);
 890                         soneInserter.start();
 891                         return sone;
 892                 }
 893         }
 894
 895         /**
 896          * Creates a new Sone for the given own identity.
 897          *
 898          * @param ownIdentity
 899          *            The own identity to create a Sone for
 900          * @return The created Sone
 901          */
 902         public Sone createSone(OwnIdentity ownIdentity) {
 903                 try {
 904                         ownIdentity.addContext("Sone");
 905                 } catch (WebOfTrustException wote1) {
 906                         logger.log(Level.SEVERE, "Could not add “Sone” context to own identity: " + ownIdentity, wote1);
 907                         return null;
 908                 }
 909                 Sone sone = addLocalSone(ownIdentity);
 910                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 911                 sone.addFriend("nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 912                 touchConfiguration();
 913                 return sone;
 914         }
 915
 916         /**
 917          * Adds the Sone of the given identity.
 918          *
 919          * @param identity
 920          *            The identity whose Sone to add
 921          * @return The added or already existing Sone
 922          */
 923         public Sone addRemoteSone(Identity identity) {
 924                 if (identity == null) {
 925                         logger.log(Level.WARNING, "Given Identity is null!");
 926                         return null;
 927                 }
 928                 synchronized (remoteSones) {
 929                         final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
 930                         boolean newSone = sone.getRequestUri() == null;
 931                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 932                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 933                         if (newSone) {
 934                                 synchronized (newSones) {
 935                                         newSone = !knownSones.contains(sone.getId());
 936                                         if (newSone) {
 937                                                 newSones.add(sone.getId());
 938                                         }
 939                                 }
 940                                 if (newSone) {
 941                                         coreListenerManager.fireNewSoneFound(sone);
 942                                         for (Sone localSone : getLocalSones()) {
 943                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 944                                                         localSone.addFriend(sone.getId());
 945                                                         touchConfiguration();
 946                                                 }
 947                                         }
 948                                 }
 949                         }
 950                         remoteSones.put(identity.getId(), sone);
 951                         soneDownloader.addSone(sone);
 952                         setSoneStatus(sone, SoneStatus.unknown);
 953                         soneDownloaders.execute(new Runnable() {
 954
 955                                 @Override
 956                                 @SuppressWarnings("synthetic-access")
 957                                 public void run() {
 958                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 959                                 }
 960
 961                         });
 962                         return sone;
 963                 }
 964         }
 965
 966         /**
 967          * Retrieves the trust relationship from the origin to the target. If the
 968          * trust relationship can not be retrieved, {@code null} is returned.
 969          *
 970          * @see Identity#getTrust(OwnIdentity)
 971          * @param origin
 972          *            The origin of the trust tree
 973          * @param target
 974          *            The target of the trust
 975          * @return The trust relationship
 976          */
 977         public Trust getTrust(Sone origin, Sone target) {
 978                 if (!isLocalSone(origin)) {
 979                         logger.log(Level.WARNING, "Tried to get trust from remote Sone: %s", origin);
 980                         return null;
 981                 }
 982                 return target.getIdentity().getTrust((OwnIdentity) origin.getIdentity());
 983         }
 984
 985         /**
 986          * Sets the trust value of the given origin Sone for the target Sone.
 987          *
 988          * @param origin
 989          *            The origin Sone
 990          * @param target
 991          *            The target Sone
 992          * @param trustValue
 993          *            The trust value (from {@code -100} to {@code 100})
 994          */
 995         public void setTrust(Sone origin, Sone target, int trustValue) {
 996                 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();
 997                 try {
 998                         ((OwnIdentity) origin.getIdentity()).setTrust(target.getIdentity(), trustValue, preferences.getTrustComment());
 999                 } catch (WebOfTrustException wote1) {
1000                         logger.log(Level.WARNING, "Could not set trust for Sone: " + target, wote1);
1001                 }
1002         }
1003
1004         /**
1005          * Removes any trust assignment for the given target Sone.
1006          *
1007          * @param origin
1008          *            The trust origin
1009          * @param target
1010          *            The trust target
1011          */
1012         public void removeTrust(Sone origin, Sone target) {
1013                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
1014                 try {
1015                         ((OwnIdentity) origin.getIdentity()).removeTrust(target.getIdentity());
1016                 } catch (WebOfTrustException wote1) {
1017                         logger.log(Level.WARNING, "Could not remove trust for Sone: " + target, wote1);
1018                 }
1019         }
1020
1021         /**
1022          * Assigns the configured positive trust value for the given target.
1023          *
1024          * @param origin
1025          *            The trust origin
1026          * @param target
1027          *            The trust target
1028          */
1029         public void trustSone(Sone origin, Sone target) {
1030                 setTrust(origin, target, preferences.getPositiveTrust());
1031         }
1032
1033         /**
1034          * Assigns the configured negative trust value for the given target.
1035          *
1036          * @param origin
1037          *            The trust origin
1038          * @param target
1039          *            The trust target
1040          */
1041         public void distrustSone(Sone origin, Sone target) {
1042                 setTrust(origin, target, preferences.getNegativeTrust());
1043         }
1044
1045         /**
1046          * Removes the trust assignment for the given target.
1047          *
1048          * @param origin
1049          *            The trust origin
1050          * @param target
1051          *            The trust target
1052          */
1053         public void untrustSone(Sone origin, Sone target) {
1054                 removeTrust(origin, target);
1055         }
1056
1057         /**
1058          * Updates the stored Sone with the given Sone.
1059          *
1060          * @param sone
1061          *            The updated Sone
1062          */
1063         public void updateSone(Sone sone) {
1064                 updateSone(sone, false);
1065         }
1066
1067         /**
1068          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
1069          * {@code true}, an older Sone than the current Sone can be given to restore
1070          * an old state.
1071          *
1072          * @param sone
1073          *            The Sone to update
1074          * @param soneRescueMode
1075          *            {@code true} if the stored Sone should be updated regardless
1076          *            of the age of the given Sone
1077          */
1078         public void updateSone(Sone sone, boolean soneRescueMode) {
1079                 if (hasSone(sone.getId())) {
1080                         Sone storedSone = getSone(sone.getId());
1081                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1082                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
1083                                 return;
1084                         }
1085                         synchronized (posts) {
1086                                 if (!soneRescueMode) {
1087                                         for (Post post : storedSone.getPosts()) {
1088                                                 posts.remove(post.getId());
1089                                                 if (!sone.getPosts().contains(post)) {
1090                                                         coreListenerManager.firePostRemoved(post);
1091                                                 }
1092                                         }
1093                                 }
1094                                 List<Post> storedPosts = storedSone.getPosts();
1095                                 synchronized (newPosts) {
1096                                         for (Post post : sone.getPosts()) {
1097                                                 post.setSone(storedSone);
1098                                                 if (!storedPosts.contains(post) && !knownPosts.contains(post.getId())) {
1099                                                         newPosts.add(post.getId());
1100                                                         coreListenerManager.fireNewPostFound(post);
1101                                                 }
1102                                                 posts.put(post.getId(), post);
1103                                         }
1104                                 }
1105                         }
1106                         synchronized (replies) {
1107                                 if (!soneRescueMode) {
1108                                         for (Reply reply : storedSone.getReplies()) {
1109                                                 replies.remove(reply.getId());
1110                                                 if (!sone.getReplies().contains(reply)) {
1111                                                         coreListenerManager.fireReplyRemoved(reply);
1112                                                 }
1113                                         }
1114                                 }
1115                                 Set<Reply> storedReplies = storedSone.getReplies();
1116                                 synchronized (newReplies) {
1117                                         for (Reply reply : sone.getReplies()) {
1118                                                 reply.setSone(storedSone);
1119                                                 if (!storedReplies.contains(reply) && !knownReplies.contains(reply.getId())) {
1120                                                         newReplies.add(reply.getId());
1121                                                         coreListenerManager.fireNewReplyFound(reply);
1122                                                 }
1123                                                 replies.put(reply.getId(), reply);
1124                                         }
1125                                 }
1126                         }
1127                         synchronized (storedSone) {
1128                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1129                                         storedSone.setTime(sone.getTime());
1130                                 }
1131                                 storedSone.setClient(sone.getClient());
1132                                 storedSone.setProfile(sone.getProfile());
1133                                 if (soneRescueMode) {
1134                                         for (Post post : sone.getPosts()) {
1135                                                 storedSone.addPost(post);
1136                                         }
1137                                         for (Reply reply : sone.getReplies()) {
1138                                                 storedSone.addReply(reply);
1139                                         }
1140                                         for (String likedPostId : sone.getLikedPostIds()) {
1141                                                 storedSone.addLikedPostId(likedPostId);
1142                                         }
1143                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1144                                                 storedSone.addLikedReplyId(likedReplyId);
1145                                         }
1146                                 } else {
1147                                         storedSone.setPosts(sone.getPosts());
1148                                         storedSone.setReplies(sone.getReplies());
1149                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1150                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1151                                 }
1152                                 storedSone.setLatestEdition(sone.getLatestEdition());
1153                         }
1154                 }
1155         }
1156
1157         /**
1158          * Deletes the given Sone. This will remove the Sone from the
1159          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
1160          * and remove the context from its identity.
1161          *
1162          * @param sone
1163          *            The Sone to delete
1164          */
1165         public void deleteSone(Sone sone) {
1166                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1167                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
1168                         return;
1169                 }
1170                 synchronized (localSones) {
1171                         if (!localSones.containsKey(sone.getId())) {
1172                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
1173                                 return;
1174                         }
1175                         localSones.remove(sone.getId());
1176                         SoneInserter soneInserter = soneInserters.remove(sone);
1177                         soneInserter.removeSoneInsertListener(this);
1178                         soneInserter.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                                 touchConfiguration();
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                 /* initialize options. */
1224                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1225                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1226
1227                 /* load Sone. */
1228                 String sonePrefix = "Sone/" + sone.getId();
1229                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1230                 if (soneTime == null) {
1231                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1232                         return;
1233                 }
1234                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1235
1236                 /* load profile. */
1237                 Profile profile = new Profile();
1238                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1239                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1240                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1241                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1242                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1243                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1244
1245                 /* load profile fields. */
1246                 while (true) {
1247                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1248                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1249                         if (fieldName == null) {
1250                                 break;
1251                         }
1252                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1253                         profile.addField(fieldName).setValue(fieldValue);
1254                 }
1255
1256                 /* load posts. */
1257                 Set<Post> posts = new HashSet<Post>();
1258                 while (true) {
1259                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1260                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1261                         if (postId == null) {
1262                                 break;
1263                         }
1264                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1265                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1266                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1267                         if ((postTime == 0) || (postText == null)) {
1268                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1269                                 return;
1270                         }
1271                         Post post = getPost(postId).setSone(sone).setTime(postTime).setText(postText);
1272                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1273                                 post.setRecipient(getSone(postRecipientId));
1274                         }
1275                         posts.add(post);
1276                 }
1277
1278                 /* load replies. */
1279                 Set<Reply> replies = new HashSet<Reply>();
1280                 while (true) {
1281                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1282                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1283                         if (replyId == null) {
1284                                 break;
1285                         }
1286                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1287                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1288                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1289                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1290                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1291                                 return;
1292                         }
1293                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
1294                 }
1295
1296                 /* load post likes. */
1297                 Set<String> likedPostIds = new HashSet<String>();
1298                 while (true) {
1299                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1300                         if (likedPostId == null) {
1301                                 break;
1302                         }
1303                         likedPostIds.add(likedPostId);
1304                 }
1305
1306                 /* load reply likes. */
1307                 Set<String> likedReplyIds = new HashSet<String>();
1308                 while (true) {
1309                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1310                         if (likedReplyId == null) {
1311                                 break;
1312                         }
1313                         likedReplyIds.add(likedReplyId);
1314                 }
1315
1316                 /* load friends. */
1317                 Set<String> friends = new HashSet<String>();
1318                 while (true) {
1319                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1320                         if (friendId == null) {
1321                                 break;
1322                         }
1323                         friends.add(friendId);
1324                 }
1325
1326                 /* load options. */
1327                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1328                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1329
1330                 /* if we’re still here, Sone was loaded successfully. */
1331                 synchronized (sone) {
1332                         sone.setTime(soneTime);
1333                         sone.setProfile(profile);
1334                         sone.setPosts(posts);
1335                         sone.setReplies(replies);
1336                         sone.setLikePostIds(likedPostIds);
1337                         sone.setLikeReplyIds(likedReplyIds);
1338                         sone.setFriends(friends);
1339                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1340                 }
1341                 synchronized (newSones) {
1342                         for (String friend : friends) {
1343                                 knownSones.add(friend);
1344                         }
1345                 }
1346                 synchronized (newPosts) {
1347                         for (Post post : posts) {
1348                                 knownPosts.add(post.getId());
1349                         }
1350                 }
1351                 synchronized (newReplies) {
1352                         for (Reply reply : replies) {
1353                                 knownReplies.add(reply.getId());
1354                         }
1355                 }
1356         }
1357
1358         /**
1359          * Creates a new post.
1360          *
1361          * @param sone
1362          *            The Sone that creates the post
1363          * @param text
1364          *            The text of the post
1365          * @return The created post
1366          */
1367         public Post createPost(Sone sone, String text) {
1368                 return createPost(sone, System.currentTimeMillis(), text);
1369         }
1370
1371         /**
1372          * Creates a new post.
1373          *
1374          * @param sone
1375          *            The Sone that creates the post
1376          * @param time
1377          *            The time of the post
1378          * @param text
1379          *            The text of the post
1380          * @return The created post
1381          */
1382         public Post createPost(Sone sone, long time, String text) {
1383                 return createPost(sone, null, time, text);
1384         }
1385
1386         /**
1387          * Creates a new post.
1388          *
1389          * @param sone
1390          *            The Sone that creates the post
1391          * @param recipient
1392          *            The recipient Sone, or {@code null} if this post does not have
1393          *            a recipient
1394          * @param text
1395          *            The text of the post
1396          * @return The created post
1397          */
1398         public Post createPost(Sone sone, Sone recipient, String text) {
1399                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1400         }
1401
1402         /**
1403          * Creates a new post.
1404          *
1405          * @param sone
1406          *            The Sone that creates the post
1407          * @param recipient
1408          *            The recipient Sone, or {@code null} if this post does not have
1409          *            a recipient
1410          * @param time
1411          *            The time of the post
1412          * @param text
1413          *            The text of the post
1414          * @return The created post
1415          */
1416         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1417                 if (!isLocalSone(sone)) {
1418                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
1419                         return null;
1420                 }
1421                 final Post post = new Post(sone, time, text);
1422                 if (recipient != null) {
1423                         post.setRecipient(recipient);
1424                 }
1425                 synchronized (posts) {
1426                         posts.put(post.getId(), post);
1427                 }
1428                 synchronized (newPosts) {
1429                         newPosts.add(post.getId());
1430                         coreListenerManager.fireNewPostFound(post);
1431                 }
1432                 sone.addPost(post);
1433                 touchConfiguration();
1434                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1435
1436                         /**
1437                          * {@inheritDoc}
1438                          */
1439                         @Override
1440                         public void run() {
1441                                 markPostKnown(post);
1442                         }
1443                 }, "Mark " + post + " read.");
1444                 return post;
1445         }
1446
1447         /**
1448          * Deletes the given post.
1449          *
1450          * @param post
1451          *            The post to delete
1452          */
1453         public void deletePost(Post post) {
1454                 if (!isLocalSone(post.getSone())) {
1455                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
1456                         return;
1457                 }
1458                 post.getSone().removePost(post);
1459                 synchronized (posts) {
1460                         posts.remove(post.getId());
1461                 }
1462                 coreListenerManager.firePostRemoved(post);
1463                 synchronized (newPosts) {
1464                         markPostKnown(post);
1465                         knownPosts.remove(post.getId());
1466                 }
1467                 touchConfiguration();
1468         }
1469
1470         /**
1471          * Marks the given post as known, if it is currently a new post (according
1472          * to {@link #isNewPost(String)}).
1473          *
1474          * @param post
1475          *            The post to mark as known
1476          */
1477         public void markPostKnown(Post post) {
1478                 synchronized (newPosts) {
1479                         if (newPosts.remove(post.getId())) {
1480                                 knownPosts.add(post.getId());
1481                                 coreListenerManager.fireMarkPostKnown(post);
1482                                 touchConfiguration();
1483                         }
1484                 }
1485         }
1486
1487         /**
1488          * Bookmarks the given post.
1489          *
1490          * @param post
1491          *            The post to bookmark
1492          */
1493         public void bookmark(Post post) {
1494                 bookmarkPost(post.getId());
1495         }
1496
1497         /**
1498          * Bookmarks the post with the given ID.
1499          *
1500          * @param id
1501          *            The ID of the post to bookmark
1502          */
1503         public void bookmarkPost(String id) {
1504                 synchronized (bookmarkedPosts) {
1505                         bookmarkedPosts.add(id);
1506                 }
1507         }
1508
1509         /**
1510          * Removes the given post from the bookmarks.
1511          *
1512          * @param post
1513          *            The post to unbookmark
1514          */
1515         public void unbookmark(Post post) {
1516                 unbookmarkPost(post.getId());
1517         }
1518
1519         /**
1520          * Removes the post with the given ID from the bookmarks.
1521          *
1522          * @param id
1523          *            The ID of the post to unbookmark
1524          */
1525         public void unbookmarkPost(String id) {
1526                 synchronized (bookmarkedPosts) {
1527                         bookmarkedPosts.remove(id);
1528                 }
1529         }
1530
1531         /**
1532          * Creates a new reply.
1533          *
1534          * @param sone
1535          *            The Sone that creates the reply
1536          * @param post
1537          *            The post that this reply refers to
1538          * @param text
1539          *            The text of the reply
1540          * @return The created reply
1541          */
1542         public Reply createReply(Sone sone, Post post, String text) {
1543                 return createReply(sone, post, System.currentTimeMillis(), text);
1544         }
1545
1546         /**
1547          * Creates a new reply.
1548          *
1549          * @param sone
1550          *            The Sone that creates the reply
1551          * @param post
1552          *            The post that this reply refers to
1553          * @param time
1554          *            The time of the reply
1555          * @param text
1556          *            The text of the reply
1557          * @return The created reply
1558          */
1559         public Reply createReply(Sone sone, Post post, long time, String text) {
1560                 if (!isLocalSone(sone)) {
1561                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
1562                         return null;
1563                 }
1564                 final Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
1565                 synchronized (replies) {
1566                         replies.put(reply.getId(), reply);
1567                 }
1568                 synchronized (newReplies) {
1569                         newReplies.add(reply.getId());
1570                         coreListenerManager.fireNewReplyFound(reply);
1571                 }
1572                 sone.addReply(reply);
1573                 touchConfiguration();
1574                 localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
1575
1576                         /**
1577                          * {@inheritDoc}
1578                          */
1579                         @Override
1580                         public void run() {
1581                                 markReplyKnown(reply);
1582                         }
1583                 }, "Mark " + reply + " read.");
1584                 return reply;
1585         }
1586
1587         /**
1588          * Deletes the given reply.
1589          *
1590          * @param reply
1591          *            The reply to delete
1592          */
1593         public void deleteReply(Reply reply) {
1594                 Sone sone = reply.getSone();
1595                 if (!isLocalSone(sone)) {
1596                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
1597                         return;
1598                 }
1599                 synchronized (replies) {
1600                         replies.remove(reply.getId());
1601                 }
1602                 synchronized (newReplies) {
1603                         markReplyKnown(reply);
1604                         knownReplies.remove(reply.getId());
1605                 }
1606                 sone.removeReply(reply);
1607                 touchConfiguration();
1608         }
1609
1610         /**
1611          * Marks the given reply as known, if it is currently a new reply (according
1612          * to {@link #isNewReply(String)}).
1613          *
1614          * @param reply
1615          *            The reply to mark as known
1616          */
1617         public void markReplyKnown(Reply reply) {
1618                 synchronized (newReplies) {
1619                         if (newReplies.remove(reply.getId())) {
1620                                 knownReplies.add(reply.getId());
1621                                 coreListenerManager.fireMarkReplyKnown(reply);
1622                                 touchConfiguration();
1623                         }
1624                 }
1625         }
1626
1627         /**
1628          * Notifies the core that the configuration, either of the core or of a
1629          * single local Sone, has changed, and that the configuration should be
1630          * saved.
1631          */
1632         public void touchConfiguration() {
1633                 lastConfigurationUpdate = System.currentTimeMillis();
1634         }
1635
1636         //
1637         // SERVICE METHODS
1638         //
1639
1640         /**
1641          * Starts the core.
1642          */
1643         @Override
1644         public void serviceStart() {
1645                 loadConfiguration();
1646                 updateChecker.addUpdateListener(this);
1647                 updateChecker.start();
1648         }
1649
1650         /**
1651          * {@inheritDoc}
1652          */
1653         @Override
1654         public void serviceRun() {
1655                 long lastSaved = System.currentTimeMillis();
1656                 while (!shouldStop()) {
1657                         sleep(1000);
1658                         long now = System.currentTimeMillis();
1659                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1660                                 for (Sone localSone : getLocalSones()) {
1661                                         saveSone(localSone);
1662                                 }
1663                                 saveConfiguration();
1664                                 lastSaved = now;
1665                         }
1666                 }
1667         }
1668
1669         /**
1670          * Stops the core.
1671          */
1672         @Override
1673         public void serviceStop() {
1674                 synchronized (localSones) {
1675                         for (SoneInserter soneInserter : soneInserters.values()) {
1676                                 soneInserter.removeSoneInsertListener(this);
1677                                 soneInserter.stop();
1678                         }
1679                 }
1680                 updateChecker.stop();
1681                 updateChecker.removeUpdateListener(this);
1682                 soneDownloader.stop();
1683         }
1684
1685         //
1686         // PRIVATE METHODS
1687         //
1688
1689         /**
1690          * Saves the given Sone. This will persist all local settings for the given
1691          * Sone, such as the friends list and similar, private options.
1692          *
1693          * @param sone
1694          *            The Sone to save
1695          */
1696         private synchronized void saveSone(Sone sone) {
1697                 if (!isLocalSone(sone)) {
1698                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
1699                         return;
1700                 }
1701                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1702                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
1703                         return;
1704                 }
1705
1706                 logger.log(Level.INFO, "Saving Sone: %s", sone);
1707                 try {
1708                         ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1709
1710                         /* save Sone into configuration. */
1711                         String sonePrefix = "Sone/" + sone.getId();
1712                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1713                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1714
1715                         /* save profile. */
1716                         Profile profile = sone.getProfile();
1717                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1718                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1719                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1720                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1721                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1722                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1723
1724                         /* save profile fields. */
1725                         int fieldCounter = 0;
1726                         for (Field profileField : profile.getFields()) {
1727                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1728                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1729                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1730                         }
1731                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1732
1733                         /* save posts. */
1734                         int postCounter = 0;
1735                         for (Post post : sone.getPosts()) {
1736                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1737                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1738                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
1739                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1740                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1741                         }
1742                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1743
1744                         /* save replies. */
1745                         int replyCounter = 0;
1746                         for (Reply reply : sone.getReplies()) {
1747                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1748                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1749                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1750                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1751                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1752                         }
1753                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1754
1755                         /* save post likes. */
1756                         int postLikeCounter = 0;
1757                         for (String postId : sone.getLikedPostIds()) {
1758                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1759                         }
1760                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1761
1762                         /* save reply likes. */
1763                         int replyLikeCounter = 0;
1764                         for (String replyId : sone.getLikedReplyIds()) {
1765                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1766                         }
1767                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1768
1769                         /* save friends. */
1770                         int friendCounter = 0;
1771                         for (String friendId : sone.getFriends()) {
1772                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1773                         }
1774                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1775
1776                         /* save options. */
1777                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1778                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1779
1780                         configuration.save();
1781                         logger.log(Level.INFO, "Sone %s saved.", sone);
1782                 } catch (ConfigurationException ce1) {
1783                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
1784                 } catch (WebOfTrustException wote1) {
1785                         logger.log(Level.WARNING, "Could not set WoT property for Sone: " + sone, wote1);
1786                 }
1787         }
1788
1789         /**
1790          * Saves the current options.
1791          */
1792         private void saveConfiguration() {
1793                 synchronized (configuration) {
1794                         if (storingConfiguration) {
1795                                 logger.log(Level.FINE, "Already storing configuration…");
1796                                 return;
1797                         }
1798                         storingConfiguration = true;
1799                 }
1800
1801                 /* store the options first. */
1802                 try {
1803                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1804                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1805                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1806                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1807                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1808                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1809                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1810                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1811                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1812                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1813                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
1814                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
1815                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
1816
1817                         /* save known Sones. */
1818                         int soneCounter = 0;
1819                         synchronized (newSones) {
1820                                 for (String knownSoneId : knownSones) {
1821                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1822                                 }
1823                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1824                         }
1825
1826                         /* save known posts. */
1827                         int postCounter = 0;
1828                         synchronized (newPosts) {
1829                                 for (String knownPostId : knownPosts) {
1830                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
1831                                 }
1832                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
1833                         }
1834
1835                         /* save known replies. */
1836                         int replyCounter = 0;
1837                         synchronized (newReplies) {
1838                                 for (String knownReplyId : knownReplies) {
1839                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
1840                                 }
1841                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
1842                         }
1843
1844                         /* save bookmarked posts. */
1845                         int bookmarkedPostCounter = 0;
1846                         synchronized (bookmarkedPosts) {
1847                                 for (String bookmarkedPostId : bookmarkedPosts) {
1848                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1849                                 }
1850                         }
1851                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1852
1853                         /* now save it. */
1854                         configuration.save();
1855
1856                 } catch (ConfigurationException ce1) {
1857                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1858                 } finally {
1859                         synchronized (configuration) {
1860                                 storingConfiguration = false;
1861                         }
1862                 }
1863         }
1864
1865         /**
1866          * Loads the configuration.
1867          */
1868         @SuppressWarnings("unchecked")
1869         private void loadConfiguration() {
1870                 /* create options. */
1871                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangeValidator(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
1872
1873                         @Override
1874                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1875                                 SoneInserter.setInsertionDelay(newValue);
1876                         }
1877
1878                 }));
1879                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
1880                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
1881                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1882                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangeValidator(0, 100)));
1883                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangeValidator(-100, 100)));
1884                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1885                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
1886
1887                         @Override
1888                         @SuppressWarnings("synthetic-access")
1889                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
1890                                 fcpInterface.setActive(newValue);
1891                         }
1892                 }));
1893                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
1894
1895                         @Override
1896                         @SuppressWarnings("synthetic-access")
1897                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1898                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
1899                         }
1900
1901                 }));
1902                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
1903                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
1904                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
1905
1906                 /* read options from configuration. */
1907                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
1908                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
1909                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
1910                 options.getBooleanOption("ClearOnNextRestart").set(null);
1911                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
1912                 if (clearConfiguration) {
1913                         /* stop loading the configuration. */
1914                         return;
1915                 }
1916
1917                 loadConfigurationValue("InsertionDelay");
1918                 loadConfigurationValue("PostsPerPage");
1919                 loadConfigurationValue("CharactersPerPost");
1920                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1921                 loadConfigurationValue("PositiveTrust");
1922                 loadConfigurationValue("NegativeTrust");
1923                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1924                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1925                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1926                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
1927
1928                 /* load known Sones. */
1929                 int soneCounter = 0;
1930                 while (true) {
1931                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1932                         if (knownSoneId == null) {
1933                                 break;
1934                         }
1935                         synchronized (newSones) {
1936                                 knownSones.add(knownSoneId);
1937                         }
1938                 }
1939
1940                 /* load known posts. */
1941                 int postCounter = 0;
1942                 while (true) {
1943                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
1944                         if (knownPostId == null) {
1945                                 break;
1946                         }
1947                         synchronized (newPosts) {
1948                                 knownPosts.add(knownPostId);
1949                         }
1950                 }
1951
1952                 /* load known replies. */
1953                 int replyCounter = 0;
1954                 while (true) {
1955                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
1956                         if (knownReplyId == null) {
1957                                 break;
1958                         }
1959                         synchronized (newReplies) {
1960                                 knownReplies.add(knownReplyId);
1961                         }
1962                 }
1963
1964                 /* load bookmarked posts. */
1965                 int bookmarkedPostCounter = 0;
1966                 while (true) {
1967                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1968                         if (bookmarkedPostId == null) {
1969                                 break;
1970                         }
1971                         synchronized (bookmarkedPosts) {
1972                                 bookmarkedPosts.add(bookmarkedPostId);
1973                         }
1974                 }
1975
1976         }
1977
1978         /**
1979          * Loads an {@link Integer} configuration value for the option with the
1980          * given name, logging validation failures.
1981          *
1982          * @param optionName
1983          *            The name of the option to load
1984          */
1985         private void loadConfigurationValue(String optionName) {
1986                 try {
1987                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1988                 } catch (IllegalArgumentException iae1) {
1989                         logger.log(Level.WARNING, "Invalid value for " + optionName + " in configuration, using default.");
1990                 }
1991         }
1992
1993         /**
1994          * Generate a Sone URI from the given URI and latest edition.
1995          *
1996          * @param uriString
1997          *            The URI to derive the Sone URI from
1998          * @return The derived URI
1999          */
2000         private FreenetURI getSoneUri(String uriString) {
2001                 try {
2002                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
2003                         return uri;
2004                 } catch (MalformedURLException mue1) {
2005                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
2006                         return null;
2007                 }
2008         }
2009
2010         //
2011         // INTERFACE IdentityListener
2012         //
2013
2014         /**
2015          * {@inheritDoc}
2016          */
2017         @Override
2018         public void ownIdentityAdded(OwnIdentity ownIdentity) {
2019                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
2020                 if (ownIdentity.hasContext("Sone")) {
2021                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2022                         addLocalSone(ownIdentity);
2023                 }
2024         }
2025
2026         /**
2027          * {@inheritDoc}
2028          */
2029         @Override
2030         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
2031                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
2032                 trustedIdentities.remove(ownIdentity);
2033         }
2034
2035         /**
2036          * {@inheritDoc}
2037          */
2038         @Override
2039         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
2040                 logger.log(Level.FINEST, "Adding Identity: " + identity);
2041                 trustedIdentities.get(ownIdentity).add(identity);
2042                 addRemoteSone(identity);
2043         }
2044
2045         /**
2046          * {@inheritDoc}
2047          */
2048         @Override
2049         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
2050                 new Thread(new Runnable() {
2051
2052                         @Override
2053                         @SuppressWarnings("synthetic-access")
2054                         public void run() {
2055                                 Sone sone = getRemoteSone(identity.getId());
2056                                 sone.setIdentity(identity);
2057                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2058                                 soneDownloader.addSone(sone);
2059                                 soneDownloader.fetchSone(sone);
2060                         }
2061                 }).start();
2062         }
2063
2064         /**
2065          * {@inheritDoc}
2066          */
2067         @Override
2068         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
2069                 trustedIdentities.get(ownIdentity).remove(identity);
2070                 boolean foundIdentity = false;
2071                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2072                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2073                                 continue;
2074                         }
2075                         if (trustedIdentity.getValue().contains(identity)) {
2076                                 foundIdentity = true;
2077                         }
2078                 }
2079                 if (foundIdentity) {
2080                         /* some local identity still trusts this identity, don’t remove. */
2081                         return;
2082                 }
2083                 Sone sone = getSone(identity.getId(), false);
2084                 if (sone == null) {
2085                         /* TODO - we don’t have the Sone anymore. should this happen? */
2086                         return;
2087                 }
2088                 synchronized (posts) {
2089                         synchronized (newPosts) {
2090                                 for (Post post : sone.getPosts()) {
2091                                         posts.remove(post.getId());
2092                                         newPosts.remove(post.getId());
2093                                         coreListenerManager.firePostRemoved(post);
2094                                 }
2095                         }
2096                 }
2097                 synchronized (replies) {
2098                         synchronized (newReplies) {
2099                                 for (Reply reply : sone.getReplies()) {
2100                                         replies.remove(reply.getId());
2101                                         newReplies.remove(reply.getId());
2102                                         coreListenerManager.fireReplyRemoved(reply);
2103                                 }
2104                         }
2105                 }
2106                 synchronized (remoteSones) {
2107                         remoteSones.remove(identity.getId());
2108                 }
2109                 synchronized (newSones) {
2110                         newSones.remove(identity.getId());
2111                         coreListenerManager.fireSoneRemoved(sone);
2112                 }
2113         }
2114
2115         //
2116         // INTERFACE UpdateListener
2117         //
2118
2119         /**
2120          * {@inheritDoc}
2121          */
2122         @Override
2123         public void updateFound(Version version, long releaseTime, long latestEdition) {
2124                 coreListenerManager.fireUpdateFound(version, releaseTime, latestEdition);
2125         }
2126
2127         //
2128         // SONEINSERTLISTENER METHODS
2129         //
2130
2131         /**
2132          * {@inheritDoc}
2133          */
2134         public void insertStarted(Sone sone) {
2135                 coreListenerManager.fireSoneInserting(sone);
2136         }
2137
2138         /**
2139          * {@inheritDoc}
2140          */
2141         @Override
2142         public void insertFinished(Sone sone, long insertDuration) {
2143                 coreListenerManager.fireSoneInserted(sone, insertDuration);
2144         }
2145
2146         /**
2147          * {@inheritDoc}
2148          */
2149         @Override
2150         public void insertAborted(Sone sone, Throwable cause) {
2151                 coreListenerManager.fireSoneInsertAborted(sone, cause);
2152         }
2153
2154         /**
2155          * Convenience interface for external classes that want to access the core’s
2156          * configuration.
2157          *
2158          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
2159          */
2160         public static class Preferences {
2161
2162                 /** The wrapped options. */
2163                 private final Options options;
2164
2165                 /**
2166                  * Creates a new preferences object wrapped around the given options.
2167                  *
2168                  * @param options
2169                  *            The options to wrap
2170                  */
2171                 public Preferences(Options options) {
2172                         this.options = options;
2173                 }
2174
2175                 /**
2176                  * Returns the insertion delay.
2177                  *
2178                  * @return The insertion delay
2179                  */
2180                 public int getInsertionDelay() {
2181                         return options.getIntegerOption("InsertionDelay").get();
2182                 }
2183
2184                 /**
2185                  * Validates the given insertion delay.
2186                  *
2187                  * @param insertionDelay
2188                  *            The insertion delay to validate
2189                  * @return {@code true} if the given insertion delay was valid, {@code
2190                  *         false} otherwise
2191                  */
2192                 public boolean validateInsertionDelay(Integer insertionDelay) {
2193                         return options.getIntegerOption("InsertionDelay").validate(insertionDelay);
2194                 }
2195
2196                 /**
2197                  * Sets the insertion delay
2198                  *
2199                  * @param insertionDelay
2200                  *            The new insertion delay, or {@code null} to restore it to
2201                  *            the default value
2202                  * @return This preferences
2203                  */
2204                 public Preferences setInsertionDelay(Integer insertionDelay) {
2205                         options.getIntegerOption("InsertionDelay").set(insertionDelay);
2206                         return this;
2207                 }
2208
2209                 /**
2210                  * Returns the number of posts to show per page.
2211                  *
2212                  * @return The number of posts to show per page
2213                  */
2214                 public int getPostsPerPage() {
2215                         return options.getIntegerOption("PostsPerPage").get();
2216                 }
2217
2218                 /**
2219                  * Validates the number of posts per page.
2220                  *
2221                  * @param postsPerPage
2222                  *            The number of posts per page
2223                  * @return {@code true} if the number of posts per page was valid,
2224                  *         {@code false} otherwise
2225                  */
2226                 public boolean validatePostsPerPage(Integer postsPerPage) {
2227                         return options.getIntegerOption("PostsPerPage").validate(postsPerPage);
2228                 }
2229
2230                 /**
2231                  * Sets the number of posts to show per page.
2232                  *
2233                  * @param postsPerPage
2234                  *            The number of posts to show per page
2235                  * @return This preferences object
2236                  */
2237                 public Preferences setPostsPerPage(Integer postsPerPage) {
2238                         options.getIntegerOption("PostsPerPage").set(postsPerPage);
2239                         return this;
2240                 }
2241
2242                 /**
2243                  * Returns the number of characters per post, or <code>-1</code> if the
2244                  * posts should not be cut off.
2245                  *
2246                  * @return The numbers of characters per post
2247                  */
2248                 public int getCharactersPerPost() {
2249                         return options.getIntegerOption("CharactersPerPost").get();
2250                 }
2251
2252                 /**
2253                  * Validates the number of characters per post.
2254                  *
2255                  * @param charactersPerPost
2256                  *            The number of characters per post
2257                  * @return {@code true} if the number of characters per post was valid,
2258                  *         {@code false} otherwise
2259                  */
2260                 public boolean validateCharactersPerPost(Integer charactersPerPost) {
2261                         return options.getIntegerOption("CharactersPerPost").validate(charactersPerPost);
2262                 }
2263
2264                 /**
2265                  * Sets the number of characters per post.
2266                  *
2267                  * @param charactersPerPost
2268                  *            The number of characters per post, or <code>-1</code> to
2269                  *            not cut off the posts
2270                  * @return This preferences objects
2271                  */
2272                 public Preferences setCharactersPerPost(Integer charactersPerPost) {
2273                         options.getIntegerOption("CharactersPerPost").set(charactersPerPost);
2274                         return this;
2275                 }
2276
2277                 /**
2278                  * Returns whether Sone requires full access to be even visible.
2279                  *
2280                  * @return {@code true} if Sone requires full access, {@code false}
2281                  *         otherwise
2282                  */
2283                 public boolean isRequireFullAccess() {
2284                         return options.getBooleanOption("RequireFullAccess").get();
2285                 }
2286
2287                 /**
2288                  * Sets whether Sone requires full access to be even visible.
2289                  *
2290                  * @param requireFullAccess
2291                  *            {@code true} if Sone requires full access, {@code false}
2292                  *            otherwise
2293                  */
2294                 public void setRequireFullAccess(Boolean requireFullAccess) {
2295                         options.getBooleanOption("RequireFullAccess").set(requireFullAccess);
2296                 }
2297
2298                 /**
2299                  * Returns the positive trust.
2300                  *
2301                  * @return The positive trust
2302                  */
2303                 public int getPositiveTrust() {
2304                         return options.getIntegerOption("PositiveTrust").get();
2305                 }
2306
2307                 /**
2308                  * Validates the positive trust.
2309                  *
2310                  * @param positiveTrust
2311                  *            The positive trust to validate
2312                  * @return {@code true} if the positive trust was valid, {@code false}
2313                  *         otherwise
2314                  */
2315                 public boolean validatePositiveTrust(Integer positiveTrust) {
2316                         return options.getIntegerOption("PositiveTrust").validate(positiveTrust);
2317                 }
2318
2319                 /**
2320                  * Sets the positive trust.
2321                  *
2322                  * @param positiveTrust
2323                  *            The new positive trust, or {@code null} to restore it to
2324                  *            the default vlaue
2325                  * @return This preferences
2326                  */
2327                 public Preferences setPositiveTrust(Integer positiveTrust) {
2328                         options.getIntegerOption("PositiveTrust").set(positiveTrust);
2329                         return this;
2330                 }
2331
2332                 /**
2333                  * Returns the negative trust.
2334                  *
2335                  * @return The negative trust
2336                  */
2337                 public int getNegativeTrust() {
2338                         return options.getIntegerOption("NegativeTrust").get();
2339                 }
2340
2341                 /**
2342                  * Validates the negative trust.
2343                  *
2344                  * @param negativeTrust
2345                  *            The negative trust to validate
2346                  * @return {@code true} if the negative trust was valid, {@code false}
2347                  *         otherwise
2348                  */
2349                 public boolean validateNegativeTrust(Integer negativeTrust) {
2350                         return options.getIntegerOption("NegativeTrust").validate(negativeTrust);
2351                 }
2352
2353                 /**
2354                  * Sets the negative trust.
2355                  *
2356                  * @param negativeTrust
2357                  *            The negative trust, or {@code null} to restore it to the
2358                  *            default value
2359                  * @return The preferences
2360                  */
2361                 public Preferences setNegativeTrust(Integer negativeTrust) {
2362                         options.getIntegerOption("NegativeTrust").set(negativeTrust);
2363                         return this;
2364                 }
2365
2366                 /**
2367                  * Returns the trust comment. This is the comment that is set in the web
2368                  * of trust when a trust value is assigned to an identity.
2369                  *
2370                  * @return The trust comment
2371                  */
2372                 public String getTrustComment() {
2373                         return options.getStringOption("TrustComment").get();
2374                 }
2375
2376                 /**
2377                  * Sets the trust comment.
2378                  *
2379                  * @param trustComment
2380                  *            The trust comment, or {@code null} to restore it to the
2381                  *            default value
2382                  * @return This preferences
2383                  */
2384                 public Preferences setTrustComment(String trustComment) {
2385                         options.getStringOption("TrustComment").set(trustComment);
2386                         return this;
2387                 }
2388
2389                 /**
2390                  * Returns whether the {@link FcpInterface FCP interface} is currently
2391                  * active.
2392                  *
2393                  * @see FcpInterface#setActive(boolean)
2394                  * @return {@code true} if the FCP interface is currently active,
2395                  *         {@code false} otherwise
2396                  */
2397                 public boolean isFcpInterfaceActive() {
2398                         return options.getBooleanOption("ActivateFcpInterface").get();
2399                 }
2400
2401                 /**
2402                  * Sets whether the {@link FcpInterface FCP interface} is currently
2403                  * active.
2404                  *
2405                  * @see FcpInterface#setActive(boolean)
2406                  * @param fcpInterfaceActive
2407                  *            {@code true} to activate the FCP interface, {@code false}
2408                  *            to deactivate the FCP interface
2409                  * @return This preferences object
2410                  */
2411                 public Preferences setFcpInterfaceActive(boolean fcpInterfaceActive) {
2412                         options.getBooleanOption("ActivateFcpInterface").set(fcpInterfaceActive);
2413                         return this;
2414                 }
2415
2416                 /**
2417                  * Returns the action level for which full access to the FCP interface
2418                  * is required.
2419                  *
2420                  * @return The action level for which full access to the FCP interface
2421                  *         is required
2422                  */
2423                 public FullAccessRequired getFcpFullAccessRequired() {
2424                         return FullAccessRequired.values()[options.getIntegerOption("FcpFullAccessRequired").get()];
2425                 }
2426
2427                 /**
2428                  * Sets the action level for which full access to the FCP interface is
2429                  * required
2430                  *
2431                  * @param fcpFullAccessRequired
2432                  *            The action level
2433                  * @return This preferences
2434                  */
2435                 public Preferences setFcpFullAccessRequired(FullAccessRequired fcpFullAccessRequired) {
2436                         options.getIntegerOption("FcpFullAccessRequired").set((fcpFullAccessRequired != null) ? fcpFullAccessRequired.ordinal() : null);
2437                         return this;
2438                 }
2439
2440                 /**
2441                  * Returns whether Sone should clear its settings on the next restart.
2442                  * In order to be effective, {@link #isReallyClearOnNextRestart()} needs
2443                  * to return {@code true} as well!
2444                  *
2445                  * @return {@code true} if Sone should clear its settings on the next
2446                  *         restart, {@code false} otherwise
2447                  */
2448                 public boolean isClearOnNextRestart() {
2449                         return options.getBooleanOption("ClearOnNextRestart").get();
2450                 }
2451
2452                 /**
2453                  * Sets whether Sone will clear its settings on the next restart.
2454                  *
2455                  * @param clearOnNextRestart
2456                  *            {@code true} if Sone should clear its settings on the next
2457                  *            restart, {@code false} otherwise
2458                  * @return This preferences
2459                  */
2460                 public Preferences setClearOnNextRestart(Boolean clearOnNextRestart) {
2461                         options.getBooleanOption("ClearOnNextRestart").set(clearOnNextRestart);
2462                         return this;
2463                 }
2464
2465                 /**
2466                  * Returns whether Sone should really clear its settings on next
2467                  * restart. This is a confirmation option that needs to be set in
2468                  * addition to {@link #isClearOnNextRestart()} in order to clear Sone’s
2469                  * settings on the next restart.
2470                  *
2471                  * @return {@code true} if Sone should really clear its settings on the
2472                  *         next restart, {@code false} otherwise
2473                  */
2474                 public boolean isReallyClearOnNextRestart() {
2475                         return options.getBooleanOption("ReallyClearOnNextRestart").get();
2476                 }
2477
2478                 /**
2479                  * Sets whether Sone should really clear its settings on the next
2480                  * restart.
2481                  *
2482                  * @param reallyClearOnNextRestart
2483                  *            {@code true} if Sone should really clear its settings on
2484                  *            the next restart, {@code false} otherwise
2485                  * @return This preferences
2486                  */
2487                 public Preferences setReallyClearOnNextRestart(Boolean reallyClearOnNextRestart) {
2488                         options.getBooleanOption("ReallyClearOnNextRestart").set(reallyClearOnNextRestart);
2489                         return this;
2490                 }
2491
2492         }
2493
2494 }