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

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