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                         }
 419                         return sone;
 420                 }
 421         }
 422
 423         /**
 424          * Returns all remote Sones.
 425          *
 426          * @return All remote Sones
 427          */
 428         public Set<Sone> getRemoteSones() {
 429                 synchronized (remoteSones) {
 430                         return new HashSet<Sone>(remoteSones.values());
 431                 }
 432         }
 433
 434         /**
 435          * Returns the remote Sone with the given ID.
 436          *
 437          * @param id
 438          *            The ID of the remote Sone to get
 439          * @return The Sone with the given ID
 440          */
 441         public Sone getRemoteSone(String id) {
 442                 return getRemoteSone(id, true);
 443         }
 444
 445         /**
 446          * Returns the remote Sone with the given ID.
 447          *
 448          * @param id
 449          *            The ID of the remote Sone to get
 450          * @param create
 451          *            {@code true} to always create a Sone, {@code false} to return
 452          *            {@code null} if no Sone with the given ID exists
 453          * @return The Sone with the given ID
 454          */
 455         public Sone getRemoteSone(String id, boolean create) {
 456                 synchronized (remoteSones) {
 457                         Sone sone = remoteSones.get(id);
 458                         if ((sone == null) && create) {
 459                                 sone = new Sone(id);
 460                                 remoteSones.put(id, sone);
 461                         }
 462                         return sone;
 463                 }
 464         }
 465
 466         /**
 467          * Returns whether the given Sone is a remote Sone.
 468          *
 469          * @param sone
 470          *            The Sone to check
 471          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 472          *         otherwise
 473          */
 474         public boolean isRemoteSone(Sone sone) {
 475                 synchronized (remoteSones) {
 476                         return remoteSones.containsKey(sone.getId());
 477                 }
 478         }
 479
 480         /**
 481          * Returns whether the Sone with the given ID is a remote Sone.
 482          *
 483          * @param id
 484          *            The ID of the Sone to check
 485          * @return {@code true} if the Sone with the given ID is a remote Sone,
 486          *         {@code false} otherwise
 487          */
 488         public boolean isRemoteSone(String id) {
 489                 synchronized (remoteSones) {
 490                         return remoteSones.containsKey(id);
 491                 }
 492         }
 493
 494         /**
 495          * Returns whether the given Sone is a new Sone. After this check, the Sone
 496          * is marked as known, i.e. a second call with the same parameters will
 497          * always yield {@code false}.
 498          *
 499          * @param sone
 500          *            The sone to check for
 501          * @return {@code true} if the given Sone is new, false otherwise
 502          */
 503         public boolean isNewSone(Sone sone) {
 504                 synchronized (newSones) {
 505                         boolean isNew = !knownSones.contains(sone.getId()) && newSones.remove(sone.getId());
 506                         knownSones.add(sone.getId());
 507                         if (isNew) {
 508                                 coreListenerManager.fireMarkSoneKnown(sone);
 509                         }
 510                         return isNew;
 511                 }
 512         }
 513
 514         /**
 515          * Returns whether the given Sone has been modified.
 516          *
 517          * @param sone
 518          *            The Sone to check for modifications
 519          * @return {@code true} if a modification has been detected in the Sone,
 520          *         {@code false} otherwise
 521          */
 522         public boolean isModifiedSone(Sone sone) {
 523                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 524         }
 525
 526         /**
 527          * Returns whether the target Sone is trusted by the origin Sone.
 528          *
 529          * @param origin
 530          *            The origin Sone
 531          * @param target
 532          *            The target Sone
 533          * @return {@code true} if the target Sone is trusted by the origin Sone
 534          */
 535         public boolean isSoneTrusted(Sone origin, Sone target) {
 536                 return trustedIdentities.containsKey(origin) && trustedIdentities.get(origin.getIdentity()).contains(target);
 537         }
 538
 539         /**
 540          * Returns the post with the given ID.
 541          *
 542          * @param postId
 543          *            The ID of the post to get
 544          * @return The post, or {@code null} if there is no such post
 545          */
 546         public Post getPost(String postId) {
 547                 return getPost(postId, true);
 548         }
 549
 550         /**
 551          * Returns the post with the given ID, optionally creating a new post.
 552          *
 553          * @param postId
 554          *            The ID of the post to get
 555          * @param create
 556          *            {@code true} it create a new post if no post with the given ID
 557          *            exists, {@code false} to return {@code null}
 558          * @return The post, or {@code null} if there is no such post
 559          */
 560         public Post getPost(String postId, boolean create) {
 561                 synchronized (posts) {
 562                         Post post = posts.get(postId);
 563                         if ((post == null) && create) {
 564                                 post = new Post(postId);
 565                                 posts.put(postId, post);
 566                         }
 567                         return post;
 568                 }
 569         }
 570
 571         /**
 572          * Returns whether the given post ID is new. After this method returns it is
 573          * marked a known post ID.
 574          *
 575          * @param postId
 576          *            The post ID
 577          * @return {@code true} if the post is considered to be new, {@code false}
 578          *         otherwise
 579          */
 580         public boolean isNewPost(String postId) {
 581                 return isNewPost(postId, true);
 582         }
 583
 584         /**
 585          * Returns whether the given post ID is new. If {@code markAsKnown} is
 586          * {@code true} then after this method returns the post ID is marked a known
 587          * post ID.
 588          *
 589          * @param postId
 590          *            The post ID
 591          * @param markAsKnown
 592          *            {@code true} to mark the post ID as known, {@code false} to
 593          *            not to mark it as known
 594          * @return {@code true} if the post is considered to be new, {@code false}
 595          *         otherwise
 596          */
 597         public boolean isNewPost(String postId, boolean markAsKnown) {
 598                 synchronized (newPosts) {
 599                         boolean isNew = !knownPosts.contains(postId) && newPosts.contains(postId);
 600                         if (markAsKnown) {
 601                                 Post post = getPost(postId, false);
 602                                 if (post != null) {
 603                                         markPostKnown(post);
 604                                 }
 605                         }
 606                         return isNew;
 607                 }
 608         }
 609
 610         /**
 611          * Returns the reply with the given ID. If there is no reply with the given
 612          * ID yet, a new one is created.
 613          *
 614          * @param replyId
 615          *            The ID of the reply to get
 616          * @return The reply
 617          */
 618         public Reply getReply(String replyId) {
 619                 return getReply(replyId, true);
 620         }
 621
 622         /**
 623          * Returns the reply with the given ID. If there is no reply with the given
 624          * ID yet, a new one is created, unless {@code create} is false in which
 625          * case {@code null} is returned.
 626          *
 627          * @param replyId
 628          *            The ID of the reply to get
 629          * @param create
 630          *            {@code true} to always return a {@link Reply}, {@code false}
 631          *            to return {@code null} if no reply can be found
 632          * @return The reply, or {@code null} if there is no such reply
 633          */
 634         public Reply getReply(String replyId, boolean create) {
 635                 synchronized (replies) {
 636                         Reply reply = replies.get(replyId);
 637                         if (create && (reply == null)) {
 638                                 reply = new Reply(replyId);
 639                                 replies.put(replyId, reply);
 640                         }
 641                         return reply;
 642                 }
 643         }
 644
 645         /**
 646          * Returns all replies for the given post, order ascending by time.
 647          *
 648          * @param post
 649          *            The post to get all replies for
 650          * @return All replies for the given post
 651          */
 652         public List<Reply> getReplies(Post post) {
 653                 Set<Sone> sones = getSones();
 654                 List<Reply> replies = new ArrayList<Reply>();
 655                 for (Sone sone : sones) {
 656                         for (Reply reply : sone.getReplies()) {
 657                                 if (reply.getPost().equals(post)) {
 658                                         replies.add(reply);
 659                                 }
 660                         }
 661                 }
 662                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 663                 return replies;
 664         }
 665
 666         /**
 667          * Returns whether the reply with the given ID is new.
 668          *
 669          * @param replyId
 670          *            The ID of the reply to check
 671          * @return {@code true} if the reply is considered to be new, {@code false}
 672          *         otherwise
 673          */
 674         public boolean isNewReply(String replyId) {
 675                 return isNewReply(replyId, true);
 676         }
 677
 678         /**
 679          * Returns whether the reply with the given ID is new.
 680          *
 681          * @param replyId
 682          *            The ID of the reply to check
 683          * @param markAsKnown
 684          *            {@code true} to mark the reply as known, {@code false} to not
 685          *            to mark it as known
 686          * @return {@code true} if the reply is considered to be new, {@code false}
 687          *         otherwise
 688          */
 689         public boolean isNewReply(String replyId, boolean markAsKnown) {
 690                 synchronized (newReplies) {
 691                         boolean isNew = !knownReplies.contains(replyId) && newReplies.contains(replyId);
 692                         if (markAsKnown) {
 693                                 Reply reply = getReply(replyId, false);
 694                                 if (reply != null) {
 695                                         markReplyKnown(reply);
 696                                 }
 697                         }
 698                         return isNew;
 699                 }
 700         }
 701
 702         /**
 703          * Returns all Sones that have liked the given post.
 704          *
 705          * @param post
 706          *            The post to get the liking Sones for
 707          * @return The Sones that like the given post
 708          */
 709         public Set<Sone> getLikes(Post post) {
 710                 Set<Sone> sones = new HashSet<Sone>();
 711                 for (Sone sone : getSones()) {
 712                         if (sone.getLikedPostIds().contains(post.getId())) {
 713                                 sones.add(sone);
 714                         }
 715                 }
 716                 return sones;
 717         }
 718
 719         /**
 720          * Returns all Sones that have liked the given reply.
 721          *
 722          * @param reply
 723          *            The reply to get the liking Sones for
 724          * @return The Sones that like the given reply
 725          */
 726         public Set<Sone> getLikes(Reply reply) {
 727                 Set<Sone> sones = new HashSet<Sone>();
 728                 for (Sone sone : getSones()) {
 729                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 730                                 sones.add(sone);
 731                         }
 732                 }
 733                 return sones;
 734         }
 735
 736         //
 737         // ACTIONS
 738         //
 739
 740         /**
 741          * Locks the given Sone. A locked Sone will not be inserted by
 742          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 743          * again.
 744          *
 745          * @param sone
 746          *            The sone to lock
 747          */
 748         public void lockSone(Sone sone) {
 749                 synchronized (lockedSones) {
 750                         if (lockedSones.add(sone)) {
 751                                 coreListenerManager.fireSoneLocked(sone);
 752                         }
 753                 }
 754         }
 755
 756         /**
 757          * Unlocks the given Sone.
 758          *
 759          * @see #lockSone(Sone)
 760          * @param sone
 761          *            The sone to unlock
 762          */
 763         public void unlockSone(Sone sone) {
 764                 synchronized (lockedSones) {
 765                         if (lockedSones.remove(sone)) {
 766                                 coreListenerManager.fireSoneUnlocked(sone);
 767                         }
 768                 }
 769         }
 770
 771         /**
 772          * Adds a local Sone from the given ID which has to be the ID of an own
 773          * identity.
 774          *
 775          * @param id
 776          *            The ID of an own identity to add a Sone for
 777          * @return The added (or already existing) Sone
 778          */
 779         public Sone addLocalSone(String id) {
 780                 synchronized (localSones) {
 781                         if (localSones.containsKey(id)) {
 782                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 783                                 return localSones.get(id);
 784                         }
 785                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 786                         if (ownIdentity == null) {
 787                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 788                                 return null;
 789                         }
 790                         return addLocalSone(ownIdentity);
 791                 }
 792         }
 793
 794         /**
 795          * Adds a local Sone from the given own identity.
 796          *
 797          * @param ownIdentity
 798          *            The own identity to create a Sone from
 799          * @return The added (or already existing) Sone
 800          */
 801         public Sone addLocalSone(OwnIdentity ownIdentity) {
 802                 if (ownIdentity == null) {
 803                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 804                         return null;
 805                 }
 806                 synchronized (localSones) {
 807                         final Sone sone;
 808                         try {
 809                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 810                         } catch (MalformedURLException mue1) {
 811                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 812                                 return null;
 813                         }
 814                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 815                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 816                         /* TODO - load posts ’n stuff */
 817                         localSones.put(ownIdentity.getId(), sone);
 818                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 819                         soneInserters.put(sone, soneInserter);
 820                         setSoneStatus(sone, SoneStatus.idle);
 821                         loadSone(sone);
 822                         if (!isSoneRescueMode()) {
 823                                 soneInserter.start();
 824                         }
 825                         new Thread(new Runnable() {
 826
 827                                 @Override
 828                                 @SuppressWarnings("synthetic-access")
 829                                 public void run() {
 830                                         if (!isSoneRescueMode()) {
 831                                                 soneDownloader.fetchSone(sone);
 832                                                 return;
 833                                         }
 834                                         logger.log(Level.INFO, "Trying to restore Sone from Freenet…");
 835                                         coreListenerManager.fireRescuingSone(sone);
 836                                         lockSone(sone);
 837                                         long edition = sone.getLatestEdition();
 838                                         while (!stopped && (edition >= 0) && isSoneRescueMode()) {
 839                                                 logger.log(Level.FINE, "Downloading edition " + edition + "…");
 840                                                 soneDownloader.fetchSone(sone, sone.getRequestUri().setKeyType("SSK").setDocName("Sone-" + edition));
 841                                                 --edition;
 842                                         }
 843                                         logger.log(Level.INFO, "Finished restoring Sone from Freenet, starting Inserter…");
 844                                         saveSone(sone);
 845                                         coreListenerManager.fireRescuedSone(sone);
 846                                         soneInserter.start();
 847                                 }
 848
 849                         }, "Sone Downloader").start();
 850                         return sone;
 851                 }
 852         }
 853
 854         /**
 855          * Creates a new Sone for the given own identity.
 856          *
 857          * @param ownIdentity
 858          *            The own identity to create a Sone for
 859          * @return The created Sone
 860          */
 861         public Sone createSone(OwnIdentity ownIdentity) {
 862                 try {
 863                         ownIdentity.addContext("Sone");
 864                 } catch (WebOfTrustException wote1) {
 865                         logger.log(Level.SEVERE, "Could not add “Sone” context to own identity: " + ownIdentity, wote1);
 866                         return null;
 867                 }
 868                 Sone sone = addLocalSone(ownIdentity);
 869                 return sone;
 870         }
 871
 872         /**
 873          * Adds the Sone of the given identity.
 874          *
 875          * @param identity
 876          *            The identity whose Sone to add
 877          * @return The added or already existing Sone
 878          */
 879         public Sone addRemoteSone(Identity identity) {
 880                 if (identity == null) {
 881                         logger.log(Level.WARNING, "Given Identity is null!");
 882                         return null;
 883                 }
 884                 synchronized (remoteSones) {
 885                         final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
 886                         boolean newSone = sone.getRequestUri() == null;
 887                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 888                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 889                         if (newSone) {
 890                                 synchronized (newSones) {
 891                                         newSone = !knownSones.contains(sone.getId());
 892                                         if (newSone) {
 893                                                 newSones.add(sone.getId());
 894                                         }
 895                                 }
 896                                 if (newSone) {
 897                                         coreListenerManager.fireNewSoneFound(sone);
 898                                 }
 899                         }
 900                         remoteSones.put(identity.getId(), sone);
 901                         soneDownloader.addSone(sone);
 902                         setSoneStatus(sone, SoneStatus.unknown);
 903                         new Thread(new Runnable() {
 904
 905                                 @Override
 906                                 @SuppressWarnings("synthetic-access")
 907                                 public void run() {
 908                                         soneDownloader.fetchSone(sone);
 909                                 }
 910
 911                         }, "Sone Downloader").start();
 912                         return sone;
 913                 }
 914         }
 915
 916         /**
 917          * Retrieves the trust relationship from the origin to the target. If the
 918          * trust relationship can not be retrieved, {@code null} is returned.
 919          *
 920          * @see Identity#getTrust(OwnIdentity)
 921          * @param origin
 922          *            The origin of the trust tree
 923          * @param target
 924          *            The target of the trust
 925          * @return The trust relationship
 926          */
 927         public Trust getTrust(Sone origin, Sone target) {
 928                 if (!isLocalSone(origin)) {
 929                         logger.log(Level.WARNING, "Tried to get trust from remote Sone: %s", origin);
 930                         return null;
 931                 }
 932                 return target.getIdentity().getTrust((OwnIdentity) origin.getIdentity());
 933         }
 934
 935         /**
 936          * Sets the trust value of the given origin Sone for the target Sone.
 937          *
 938          * @param origin
 939          *            The origin Sone
 940          * @param target
 941          *            The target Sone
 942          * @param trustValue
 943          *            The trust value (from {@code -100} to {@code 100})
 944          */
 945         public void setTrust(Sone origin, Sone target, int trustValue) {
 946                 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();
 947                 try {
 948                         ((OwnIdentity) origin.getIdentity()).setTrust(target.getIdentity(), trustValue, options.getStringOption("TrustComment").get());
 949                 } catch (WebOfTrustException wote1) {
 950                         logger.log(Level.WARNING, "Could not set trust for Sone: " + target, wote1);
 951                 }
 952         }
 953
 954         /**
 955          * Removes any trust assignment for the given target Sone.
 956          *
 957          * @param origin
 958          *            The trust origin
 959          * @param target
 960          *            The trust target
 961          */
 962         public void removeTrust(Sone origin, Sone target) {
 963                 Validation.begin().isNotNull("Trust Origin", origin).isNotNull("Trust Target", target).check().isInstanceOf("Trust Origin Identity", origin.getIdentity(), OwnIdentity.class).check();
 964                 try {
 965                         ((OwnIdentity) origin.getIdentity()).removeTrust(target.getIdentity());
 966                 } catch (WebOfTrustException wote1) {
 967                         logger.log(Level.WARNING, "Could not remove trust for Sone: " + target, wote1);
 968                 }
 969         }
 970
 971         /**
 972          * Assigns the configured positive 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 trustSone(Sone origin, Sone target) {
 980                 setTrust(origin, target, options.getIntegerOption("PositiveTrust").get());
 981         }
 982
 983         /**
 984          * Assigns the configured negative trust value for the given target.
 985          *
 986          * @param origin
 987          *            The trust origin
 988          * @param target
 989          *            The trust target
 990          */
 991         public void distrustSone(Sone origin, Sone target) {
 992                 setTrust(origin, target, options.getIntegerOption("NegativeTrust").get());
 993         }
 994
 995         /**
 996          * Removes the trust assignment for the given target.
 997          *
 998          * @param origin
 999          *            The trust origin
1000          * @param target
1001          *            The trust target
1002          */
1003         public void untrustSone(Sone origin, Sone target) {
1004                 removeTrust(origin, target);
1005         }
1006
1007         /**
1008          * Updates the stores Sone with the given Sone.
1009          *
1010          * @param sone
1011          *            The updated Sone
1012          */
1013         public void updateSone(Sone sone) {
1014                 if (hasSone(sone.getId())) {
1015                         boolean soneRescueMode = isLocalSone(sone) && isSoneRescueMode();
1016                         Sone storedSone = getSone(sone.getId());
1017                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1018                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
1019                                 return;
1020                         }
1021                         synchronized (posts) {
1022                                 if (!soneRescueMode) {
1023                                         for (Post post : storedSone.getPosts()) {
1024                                                 posts.remove(post.getId());
1025                                                 if (!sone.getPosts().contains(post)) {
1026                                                         coreListenerManager.firePostRemoved(post);
1027                                                 }
1028                                         }
1029                                 }
1030                                 synchronized (newPosts) {
1031                                         for (Post post : sone.getPosts()) {
1032                                                 post.setSone(getSone(post.getSone().getId()));
1033                                                 if (!storedSone.getPosts().contains(post) && !knownPosts.contains(post.getId())) {
1034                                                         newPosts.add(post.getId());
1035                                                         coreListenerManager.fireNewPostFound(post);
1036                                                 }
1037                                                 posts.put(post.getId(), post);
1038                                         }
1039                                 }
1040                         }
1041                         synchronized (replies) {
1042                                 if (!soneRescueMode) {
1043                                         for (Reply reply : storedSone.getReplies()) {
1044                                                 replies.remove(reply.getId());
1045                                                 if (!sone.getReplies().contains(reply)) {
1046                                                         coreListenerManager.fireReplyRemoved(reply);
1047                                                 }
1048                                         }
1049                                 }
1050                                 synchronized (newReplies) {
1051                                         for (Reply reply : sone.getReplies()) {
1052                                                 reply.setSone(getSone(reply.getSone().getId()));
1053                                                 if (!storedSone.getReplies().contains(reply) && !knownReplies.contains(reply.getId())) {
1054                                                         newReplies.add(reply.getId());
1055                                                         coreListenerManager.fireNewReplyFound(reply);
1056                                                 }
1057                                                 replies.put(reply.getId(), reply);
1058                                         }
1059                                 }
1060                         }
1061                         synchronized (storedSone) {
1062                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1063                                         storedSone.setTime(sone.getTime());
1064                                 }
1065                                 storedSone.setClient(sone.getClient());
1066                                 storedSone.setProfile(sone.getProfile());
1067                                 if (soneRescueMode) {
1068                                         for (Post post : sone.getPosts()) {
1069                                                 storedSone.addPost(post);
1070                                         }
1071                                         for (Reply reply : sone.getReplies()) {
1072                                                 storedSone.addReply(reply);
1073                                         }
1074                                         for (String likedPostId : sone.getLikedPostIds()) {
1075                                                 storedSone.addLikedPostId(likedPostId);
1076                                         }
1077                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1078                                                 storedSone.addLikedReplyId(likedReplyId);
1079                                         }
1080                                 } else {
1081                                         storedSone.setPosts(sone.getPosts());
1082                                         storedSone.setReplies(sone.getReplies());
1083                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1084                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1085                                 }
1086                                 storedSone.setLatestEdition(sone.getLatestEdition());
1087                         }
1088                 }
1089         }
1090
1091         /**
1092          * Deletes the given Sone. This will remove the Sone from the
1093          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
1094          * and remove the context from its identity.
1095          *
1096          * @param sone
1097          *            The Sone to delete
1098          */
1099         public void deleteSone(Sone sone) {
1100                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1101                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
1102                         return;
1103                 }
1104                 synchronized (localSones) {
1105                         if (!localSones.containsKey(sone.getId())) {
1106                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
1107                                 return;
1108                         }
1109                         localSones.remove(sone.getId());
1110                         soneInserters.remove(sone).stop();
1111                 }
1112                 try {
1113                         ((OwnIdentity) sone.getIdentity()).removeContext("Sone");
1114                         ((OwnIdentity) sone.getIdentity()).removeProperty("Sone.LatestEdition");
1115                 } catch (WebOfTrustException wote1) {
1116                         logger.log(Level.WARNING, "Could not remove context and properties from Sone: " + sone, wote1);
1117                 }
1118                 try {
1119                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1120                 } catch (ConfigurationException ce1) {
1121                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1122                 }
1123         }
1124
1125         /**
1126          * Loads and updates the given Sone from the configuration. If any error is
1127          * encountered, loading is aborted and the given Sone is not changed.
1128          *
1129          * @param sone
1130          *            The Sone to load and update
1131          */
1132         public void loadSone(Sone sone) {
1133                 if (!isLocalSone(sone)) {
1134                         logger.log(Level.FINE, "Tried to load non-local Sone: %s", sone);
1135                         return;
1136                 }
1137
1138                 /* load Sone. */
1139                 String sonePrefix = "Sone/" + sone.getId();
1140                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1141                 if (soneTime == null) {
1142                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1143                         return;
1144                 }
1145                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1146
1147                 /* load profile. */
1148                 Profile profile = new Profile();
1149                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1150                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1151                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1152                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1153                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1154                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1155
1156                 /* load profile fields. */
1157                 while (true) {
1158                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1159                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1160                         if (fieldName == null) {
1161                                 break;
1162                         }
1163                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1164                         profile.addField(fieldName).setValue(fieldValue);
1165                 }
1166
1167                 /* load posts. */
1168                 Set<Post> posts = new HashSet<Post>();
1169                 while (true) {
1170                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1171                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1172                         if (postId == null) {
1173                                 break;
1174                         }
1175                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1176                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1177                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1178                         if ((postTime == 0) || (postText == null)) {
1179                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1180                                 return;
1181                         }
1182                         Post post = getPost(postId).setSone(sone).setTime(postTime).setText(postText);
1183                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1184                                 post.setRecipient(getSone(postRecipientId));
1185                         }
1186                         posts.add(post);
1187                 }
1188
1189                 /* load replies. */
1190                 Set<Reply> replies = new HashSet<Reply>();
1191                 while (true) {
1192                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1193                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1194                         if (replyId == null) {
1195                                 break;
1196                         }
1197                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1198                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1199                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1200                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1201                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1202                                 return;
1203                         }
1204                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
1205                 }
1206
1207                 /* load post likes. */
1208                 Set<String> likedPostIds = new HashSet<String>();
1209                 while (true) {
1210                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1211                         if (likedPostId == null) {
1212                                 break;
1213                         }
1214                         likedPostIds.add(likedPostId);
1215                 }
1216
1217                 /* load reply likes. */
1218                 Set<String> likedReplyIds = new HashSet<String>();
1219                 while (true) {
1220                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1221                         if (likedReplyId == null) {
1222                                 break;
1223                         }
1224                         likedReplyIds.add(likedReplyId);
1225                 }
1226
1227                 /* load friends. */
1228                 Set<String> friends = new HashSet<String>();
1229                 while (true) {
1230                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1231                         if (friendId == null) {
1232                                 break;
1233                         }
1234                         friends.add(friendId);
1235                 }
1236
1237                 /* if we’re still here, Sone was loaded successfully. */
1238                 synchronized (sone) {
1239                         sone.setTime(soneTime);
1240                         sone.setProfile(profile);
1241                         sone.setPosts(posts);
1242                         sone.setReplies(replies);
1243                         sone.setLikePostIds(likedPostIds);
1244                         sone.setLikeReplyIds(likedReplyIds);
1245                         sone.setFriends(friends);
1246                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1247                 }
1248                 synchronized (newSones) {
1249                         for (String friend : friends) {
1250                                 knownSones.add(friend);
1251                         }
1252                 }
1253                 synchronized (newPosts) {
1254                         for (Post post : posts) {
1255                                 knownPosts.add(post.getId());
1256                         }
1257                 }
1258                 synchronized (newReplies) {
1259                         for (Reply reply : replies) {
1260                                 knownReplies.add(reply.getId());
1261                         }
1262                 }
1263         }
1264
1265         /**
1266          * Saves the given Sone. This will persist all local settings for the given
1267          * Sone, such as the friends list and similar, private options.
1268          *
1269          * @param sone
1270          *            The Sone to save
1271          */
1272         public synchronized void saveSone(Sone sone) {
1273                 if (!isLocalSone(sone)) {
1274                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
1275                         return;
1276                 }
1277                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1278                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
1279                         return;
1280                 }
1281
1282                 logger.log(Level.INFO, "Saving Sone: %s", sone);
1283                 try {
1284                         ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1285
1286                         /* save Sone into configuration. */
1287                         String sonePrefix = "Sone/" + sone.getId();
1288                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1289                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1290
1291                         /* save profile. */
1292                         Profile profile = sone.getProfile();
1293                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1294                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1295                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1296                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1297                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1298                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1299
1300                         /* save profile fields. */
1301                         int fieldCounter = 0;
1302                         for (Field profileField : profile.getFields()) {
1303                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1304                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1305                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1306                         }
1307                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1308
1309                         /* save posts. */
1310                         int postCounter = 0;
1311                         for (Post post : sone.getPosts()) {
1312                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1313                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1314                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
1315                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1316                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1317                         }
1318                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1319
1320                         /* save replies. */
1321                         int replyCounter = 0;
1322                         for (Reply reply : sone.getReplies()) {
1323                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1324                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1325                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1326                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1327                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1328                         }
1329                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1330
1331                         /* save post likes. */
1332                         int postLikeCounter = 0;
1333                         for (String postId : sone.getLikedPostIds()) {
1334                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1335                         }
1336                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1337
1338                         /* save reply likes. */
1339                         int replyLikeCounter = 0;
1340                         for (String replyId : sone.getLikedReplyIds()) {
1341                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1342                         }
1343                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1344
1345                         /* save friends. */
1346                         int friendCounter = 0;
1347                         for (String friendId : sone.getFriends()) {
1348                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1349                         }
1350                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1351
1352                         configuration.save();
1353                         logger.log(Level.INFO, "Sone %s saved.", sone);
1354                 } catch (ConfigurationException ce1) {
1355                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
1356                 } catch (WebOfTrustException wote1) {
1357                         logger.log(Level.WARNING, "Could not set WoT property for Sone: " + sone, wote1);
1358                 }
1359         }
1360
1361         /**
1362          * Creates a new post.
1363          *
1364          * @param sone
1365          *            The Sone that creates the post
1366          * @param text
1367          *            The text of the post
1368          * @return The created post
1369          */
1370         public Post createPost(Sone sone, String text) {
1371                 return createPost(sone, System.currentTimeMillis(), text);
1372         }
1373
1374         /**
1375          * Creates a new post.
1376          *
1377          * @param sone
1378          *            The Sone that creates the post
1379          * @param time
1380          *            The time of the post
1381          * @param text
1382          *            The text of the post
1383          * @return The created post
1384          */
1385         public Post createPost(Sone sone, long time, String text) {
1386                 return createPost(sone, null, time, text);
1387         }
1388
1389         /**
1390          * Creates a new post.
1391          *
1392          * @param sone
1393          *            The Sone that creates the post
1394          * @param recipient
1395          *            The recipient Sone, or {@code null} if this post does not have
1396          *            a recipient
1397          * @param text
1398          *            The text of the post
1399          * @return The created post
1400          */
1401         public Post createPost(Sone sone, Sone recipient, String text) {
1402                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1403         }
1404
1405         /**
1406          * Creates a new post.
1407          *
1408          * @param sone
1409          *            The Sone that creates the post
1410          * @param recipient
1411          *            The recipient Sone, or {@code null} if this post does not have
1412          *            a recipient
1413          * @param time
1414          *            The time of the post
1415          * @param text
1416          *            The text of the post
1417          * @return The created post
1418          */
1419         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1420                 if (!isLocalSone(sone)) {
1421                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
1422                         return null;
1423                 }
1424                 Post post = new Post(sone, time, text);
1425                 if (recipient != null) {
1426                         post.setRecipient(recipient);
1427                 }
1428                 synchronized (posts) {
1429                         posts.put(post.getId(), post);
1430                 }
1431                 synchronized (newPosts) {
1432                         knownPosts.add(post.getId());
1433                 }
1434                 sone.addPost(post);
1435                 saveSone(sone);
1436                 return post;
1437         }
1438
1439         /**
1440          * Deletes the given post.
1441          *
1442          * @param post
1443          *            The post to delete
1444          */
1445         public void deletePost(Post post) {
1446                 if (!isLocalSone(post.getSone())) {
1447                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
1448                         return;
1449                 }
1450                 post.getSone().removePost(post);
1451                 synchronized (posts) {
1452                         posts.remove(post.getId());
1453                 }
1454                 saveSone(post.getSone());
1455         }
1456
1457         /**
1458          * Marks the given post as known, if it is currently a new post (according
1459          * to {@link #isNewPost(String)}).
1460          *
1461          * @param post
1462          *            The post to mark as known
1463          */
1464         public void markPostKnown(Post post) {
1465                 synchronized (newPosts) {
1466                         if (newPosts.remove(post.getId())) {
1467                                 knownPosts.add(post.getId());
1468                                 coreListenerManager.fireMarkPostKnown(post);
1469                                 saveConfiguration();
1470                         }
1471                 }
1472         }
1473
1474         /**
1475          * Creates a new reply.
1476          *
1477          * @param sone
1478          *            The Sone that creates the reply
1479          * @param post
1480          *            The post that this reply refers to
1481          * @param text
1482          *            The text of the reply
1483          * @return The created reply
1484          */
1485         public Reply createReply(Sone sone, Post post, String text) {
1486                 return createReply(sone, post, System.currentTimeMillis(), text);
1487         }
1488
1489         /**
1490          * Creates a new reply.
1491          *
1492          * @param sone
1493          *            The Sone that creates the reply
1494          * @param post
1495          *            The post that this reply refers to
1496          * @param time
1497          *            The time of the reply
1498          * @param text
1499          *            The text of the reply
1500          * @return The created reply
1501          */
1502         public Reply createReply(Sone sone, Post post, long time, String text) {
1503                 if (!isLocalSone(sone)) {
1504                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
1505                         return null;
1506                 }
1507                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
1508                 synchronized (replies) {
1509                         replies.put(reply.getId(), reply);
1510                 }
1511                 synchronized (newReplies) {
1512                         knownReplies.add(reply.getId());
1513                 }
1514                 sone.addReply(reply);
1515                 saveSone(sone);
1516                 return reply;
1517         }
1518
1519         /**
1520          * Deletes the given reply.
1521          *
1522          * @param reply
1523          *            The reply to delete
1524          */
1525         public void deleteReply(Reply reply) {
1526                 Sone sone = reply.getSone();
1527                 if (!isLocalSone(sone)) {
1528                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
1529                         return;
1530                 }
1531                 synchronized (replies) {
1532                         replies.remove(reply.getId());
1533                 }
1534                 sone.removeReply(reply);
1535                 saveSone(sone);
1536         }
1537
1538         /**
1539          * Marks the given reply as known, if it is currently a new reply (according
1540          * to {@link #isNewReply(String)}).
1541          *
1542          * @param reply
1543          *            The reply to mark as known
1544          */
1545         public void markReplyKnown(Reply reply) {
1546                 synchronized (newReplies) {
1547                         if (newReplies.remove(reply.getId())) {
1548                                 knownReplies.add(reply.getId());
1549                                 coreListenerManager.fireMarkReplyKnown(reply);
1550                                 saveConfiguration();
1551                         }
1552                 }
1553         }
1554
1555         /**
1556          * Starts the core.
1557          */
1558         public void start() {
1559                 loadConfiguration();
1560                 updateChecker.addUpdateListener(this);
1561                 updateChecker.start();
1562         }
1563
1564         /**
1565          * Stops the core.
1566          */
1567         public void stop() {
1568                 synchronized (localSones) {
1569                         for (SoneInserter soneInserter : soneInserters.values()) {
1570                                 soneInserter.stop();
1571                         }
1572                 }
1573                 updateChecker.stop();
1574                 updateChecker.removeUpdateListener(this);
1575                 soneDownloader.stop();
1576                 saveConfiguration();
1577                 stopped = true;
1578         }
1579
1580         /**
1581          * Saves the current options.
1582          */
1583         public void saveConfiguration() {
1584                 synchronized (configuration) {
1585                         if (storingConfiguration) {
1586                                 logger.log(Level.FINE, "Already storing configuration…");
1587                                 return;
1588                         }
1589                         storingConfiguration = true;
1590                 }
1591
1592                 /* store the options first. */
1593                 try {
1594                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1595                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1596                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1597                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1598                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1599                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
1600                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
1601                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
1602
1603                         /* save known Sones. */
1604                         int soneCounter = 0;
1605                         synchronized (newSones) {
1606                                 for (String knownSoneId : knownSones) {
1607                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1608                                 }
1609                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1610                         }
1611
1612                         /* save known posts. */
1613                         int postCounter = 0;
1614                         synchronized (newPosts) {
1615                                 for (String knownPostId : knownPosts) {
1616                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
1617                                 }
1618                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
1619                         }
1620
1621                         /* save known replies. */
1622                         int replyCounter = 0;
1623                         synchronized (newReplies) {
1624                                 for (String knownReplyId : knownReplies) {
1625                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
1626                                 }
1627                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
1628                         }
1629
1630                         /* now save it. */
1631                         configuration.save();
1632
1633                 } catch (ConfigurationException ce1) {
1634                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1635                 } finally {
1636                         synchronized (configuration) {
1637                                 storingConfiguration = false;
1638                         }
1639                 }
1640         }
1641
1642         //
1643         // PRIVATE METHODS
1644         //
1645
1646         /**
1647          * Loads the configuration.
1648          */
1649         @SuppressWarnings("unchecked")
1650         private void loadConfiguration() {
1651                 /* create options. */
1652                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
1653
1654                         @Override
1655                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1656                                 SoneInserter.setInsertionDelay(newValue);
1657                         }
1658
1659                 }));
1660                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75));
1661                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-100));
1662                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1663                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
1664                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
1665                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
1666
1667                 /* read options from configuration. */
1668                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
1669                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
1670                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
1671                 options.getBooleanOption("ClearOnNextRestart").set(null);
1672                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
1673                 if (clearConfiguration) {
1674                         /* stop loading the configuration. */
1675                         return;
1676                 }
1677
1678                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
1679                 options.getIntegerOption("PositiveTrust").set(configuration.getIntValue("Option/PositiveTrust").getValue(null));
1680                 options.getIntegerOption("NegativeTrust").set(configuration.getIntValue("Option/NegativeTrust").getValue(null));
1681                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1682                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
1683
1684                 /* load known Sones. */
1685                 int soneCounter = 0;
1686                 while (true) {
1687                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1688                         if (knownSoneId == null) {
1689                                 break;
1690                         }
1691                         synchronized (newSones) {
1692                                 knownSones.add(knownSoneId);
1693                         }
1694                 }
1695
1696                 /* load known posts. */
1697                 int postCounter = 0;
1698                 while (true) {
1699                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
1700                         if (knownPostId == null) {
1701                                 break;
1702                         }
1703                         synchronized (newPosts) {
1704                                 knownPosts.add(knownPostId);
1705                         }
1706                 }
1707
1708                 /* load known replies. */
1709                 int replyCounter = 0;
1710                 while (true) {
1711                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
1712                         if (knownReplyId == null) {
1713                                 break;
1714                         }
1715                         synchronized (newReplies) {
1716                                 knownReplies.add(knownReplyId);
1717                         }
1718                 }
1719
1720         }
1721
1722         /**
1723          * Generate a Sone URI from the given URI and latest edition.
1724          *
1725          * @param uriString
1726          *            The URI to derive the Sone URI from
1727          * @return The derived URI
1728          */
1729         private FreenetURI getSoneUri(String uriString) {
1730                 try {
1731                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
1732                         return uri;
1733                 } catch (MalformedURLException mue1) {
1734                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
1735                         return null;
1736                 }
1737         }
1738
1739         //
1740         // INTERFACE IdentityListener
1741         //
1742
1743         /**
1744          * {@inheritDoc}
1745          */
1746         @Override
1747         public void ownIdentityAdded(OwnIdentity ownIdentity) {
1748                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
1749                 if (ownIdentity.hasContext("Sone")) {
1750                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
1751                         addLocalSone(ownIdentity);
1752                 }
1753         }
1754
1755         /**
1756          * {@inheritDoc}
1757          */
1758         @Override
1759         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
1760                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
1761                 trustedIdentities.remove(ownIdentity);
1762         }
1763
1764         /**
1765          * {@inheritDoc}
1766          */
1767         @Override
1768         public void identityAdded(OwnIdentity ownIdentity, Identity identity) {
1769                 logger.log(Level.FINEST, "Adding Identity: " + identity);
1770                 trustedIdentities.get(ownIdentity).add(identity);
1771                 addRemoteSone(identity);
1772         }
1773
1774         /**
1775          * {@inheritDoc}
1776          */
1777         @Override
1778         public void identityUpdated(OwnIdentity ownIdentity, final Identity identity) {
1779                 new Thread(new Runnable() {
1780
1781                         @Override
1782                         @SuppressWarnings("synthetic-access")
1783                         public void run() {
1784                                 Sone sone = getRemoteSone(identity.getId());
1785                                 sone.setIdentity(identity);
1786                                 soneDownloader.fetchSone(sone);
1787                         }
1788                 }).start();
1789         }
1790
1791         /**
1792          * {@inheritDoc}
1793          */
1794         @Override
1795         public void identityRemoved(OwnIdentity ownIdentity, Identity identity) {
1796                 trustedIdentities.get(ownIdentity).remove(identity);
1797         }
1798
1799         //
1800         // INTERFACE UpdateListener
1801         //
1802
1803         /**
1804          * {@inheritDoc}
1805          */
1806         @Override
1807         public void updateFound(Version version, long releaseTime) {
1808                 coreListenerManager.fireUpdateFound(version, releaseTime);
1809         }
1810
1811 }