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