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

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