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.main.SonePlugin;
  44 import net.pterodactylus.util.config.Configuration;
  45 import net.pterodactylus.util.config.ConfigurationException;
  46 import net.pterodactylus.util.logging.Logging;
  47 import net.pterodactylus.util.number.Numbers;
  48 import freenet.keys.FreenetURI;
  49
  50 /**
  51  * The Sone core.
  52  *
  53  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  54  */
  55 public class Core implements IdentityListener {
  56
  57         /**
  58          * Enumeration for the possible states of a {@link Sone}.
  59          *
  60          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  61          */
  62         public enum SoneStatus {
  63
  64                 /** The Sone is unknown, i.e. not yet downloaded. */
  65                 unknown,
  66
  67                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  68                 idle,
  69
  70                 /** The Sone is currently being inserted. */
  71                 inserting,
  72
  73                 /** The Sone is currently being downloaded. */
  74                 downloading,
  75         }
  76
  77         /** The logger. */
  78         private static final Logger logger = Logging.getLogger(Core.class);
  79
  80         /** The options. */
  81         private final Options options = new Options();
  82
  83         /** The core listener manager. */
  84         private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
  85
  86         /** The configuration. */
  87         private final Configuration configuration;
  88
  89         /** The identity manager. */
  90         private final IdentityManager identityManager;
  91
  92         /** Interface to freenet. */
  93         private final FreenetInterface freenetInterface;
  94
  95         /** The Sone downloader. */
  96         private final SoneDownloader soneDownloader;
  97
  98         /** Whether the core has been stopped. */
  99         private volatile boolean stopped;
 100
 101         /** The Sones’ statuses. */
 102         /* synchronize access on itself. */
 103         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
 104
 105         /** Locked local Sones. */
 106         /* synchronize on itself. */
 107         private final Set<Sone> lockedSones = new HashSet<Sone>();
 108
 109         /** Sone inserters. */
 110         /* synchronize access on this on localSones. */
 111         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 112
 113         /** All local Sones. */
 114         /* synchronize access on this on itself. */
 115         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 116
 117         /** All remote Sones. */
 118         /* synchronize access on this on itself. */
 119         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 120
 121         /** All new Sones. */
 122         private Set<String> newSones = new HashSet<String>();
 123
 124         /** All known Sones. */
 125         /* synchronize access on {@link #newSones}. */
 126         private Set<String> knownSones = new HashSet<String>();
 127
 128         /** All posts. */
 129         private Map<String, Post> posts = new HashMap<String, Post>();
 130
 131         /** All new posts. */
 132         private Set<String> newPosts = new HashSet<String>();
 133
 134         /** All known posts. */
 135         /* synchronize access on {@link #newPosts}. */
 136         private Set<String> knownPosts = new HashSet<String>();
 137
 138         /** All replies. */
 139         private Map<String, Reply> replies = new HashMap<String, Reply>();
 140
 141         /** All new replies. */
 142         private Set<String> newReplies = new HashSet<String>();
 143
 144         /** All known replies. */
 145         private Set<String> knownReplies = new HashSet<String>();
 146
 147         /**
 148          * Creates a new core.
 149          *
 150          * @param configuration
 151          *            The configuration of the core
 152          * @param freenetInterface
 153          *            The freenet interface
 154          * @param identityManager
 155          *            The identity manager
 156          */
 157         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 158                 this.configuration = configuration;
 159                 this.freenetInterface = freenetInterface;
 160                 this.identityManager = identityManager;
 161                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 162         }
 163
 164         //
 165         // LISTENER MANAGEMENT
 166         //
 167
 168         /**
 169          * Adds a new core listener.
 170          *
 171          * @param coreListener
 172          *            The listener to add
 173          */
 174         public void addCoreListener(CoreListener coreListener) {
 175                 coreListenerManager.addListener(coreListener);
 176         }
 177
 178         /**
 179          * Removes a core listener.
 180          *
 181          * @param coreListener
 182          *            The listener to remove
 183          */
 184         public void removeCoreListener(CoreListener coreListener) {
 185                 coreListenerManager.removeListener(coreListener);
 186         }
 187
 188         //
 189         // ACCESSORS
 190         //
 191
 192         /**
 193          * Returns the options used by the core.
 194          *
 195          * @return The options of the core
 196          */
 197         public Options getOptions() {
 198                 return options;
 199         }
 200
 201         /**
 202          * Returns whether the “Sone rescue mode” is currently activated.
 203          *
 204          * @return {@code true} if the “Sone rescue mode” is currently activated,
 205          *         {@code false} if it is not
 206          */
 207         public boolean isSoneRescueMode() {
 208                 return options.getBooleanOption("SoneRescueMode").get();
 209         }
 210
 211         /**
 212          * Returns the identity manager used by the core.
 213          *
 214          * @return The identity manager
 215          */
 216         public IdentityManager getIdentityManager() {
 217                 return identityManager;
 218         }
 219
 220         /**
 221          * Returns the status of the given Sone.
 222          *
 223          * @param sone
 224          *            The Sone to get the status for
 225          * @return The status of the Sone
 226          */
 227         public SoneStatus getSoneStatus(Sone sone) {
 228                 synchronized (soneStatuses) {
 229                         return soneStatuses.get(sone);
 230                 }
 231         }
 232
 233         /**
 234          * Sets the status of the given Sone.
 235          *
 236          * @param sone
 237          *            The Sone to set the status of
 238          * @param soneStatus
 239          *            The status to set
 240          */
 241         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 242                 synchronized (soneStatuses) {
 243                         soneStatuses.put(sone, soneStatus);
 244                 }
 245         }
 246
 247         /**
 248          * Returns whether the given Sone is currently locked.
 249          *
 250          * @param sone
 251          *            The sone to check
 252          * @return {@code true} if the Sone is locked, {@code false} if it is not
 253          */
 254         public boolean isLocked(Sone sone) {
 255                 synchronized (lockedSones) {
 256                         return lockedSones.contains(sone);
 257                 }
 258         }
 259
 260         /**
 261          * Returns all Sones, remote and local.
 262          *
 263          * @return All Sones
 264          */
 265         public Set<Sone> getSones() {
 266                 Set<Sone> allSones = new HashSet<Sone>();
 267                 allSones.addAll(getLocalSones());
 268                 allSones.addAll(getRemoteSones());
 269                 return allSones;
 270         }
 271
 272         /**
 273          * Returns the Sone with the given ID, regardless whether it’s local or
 274          * remote.
 275          *
 276          * @param id
 277          *            The ID of the Sone to get
 278          * @return The Sone with the given ID, or {@code null} if there is no such
 279          *         Sone
 280          */
 281         public Sone getSone(String id) {
 282                 return getSone(id, true);
 283         }
 284
 285         /**
 286          * Returns the Sone with the given ID, regardless whether it’s local or
 287          * remote.
 288          *
 289          * @param id
 290          *            The ID of the Sone to get
 291          * @param create
 292          *            {@code true} to create a new Sone if none exists,
 293          *            {@code false} to return {@code null} if a Sone with the given
 294          *            ID does not exist
 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, boolean create) {
 299                 if (isLocalSone(id)) {
 300                         return getLocalSone(id);
 301                 }
 302                 return getRemoteSone(id, create);
 303         }
 304
 305         /**
 306          * Checks whether the core knows a Sone with the given ID.
 307          *
 308          * @param id
 309          *            The ID of the Sone
 310          * @return {@code true} if there is a Sone with the given ID, {@code false}
 311          *         otherwise
 312          */
 313         public boolean hasSone(String id) {
 314                 return isLocalSone(id) || isRemoteSone(id);
 315         }
 316
 317         /**
 318          * Returns whether the given Sone is a local Sone.
 319          *
 320          * @param sone
 321          *            The Sone to check for its locality
 322          * @return {@code true} if the given Sone is local, {@code false} otherwise
 323          */
 324         public boolean isLocalSone(Sone sone) {
 325                 synchronized (localSones) {
 326                         return localSones.containsKey(sone.getId());
 327                 }
 328         }
 329
 330         /**
 331          * Returns whether the given ID is the ID of a local Sone.
 332          *
 333          * @param id
 334          *            The Sone ID to check for its locality
 335          * @return {@code true} if the given ID is a local Sone, {@code false}
 336          *         otherwise
 337          */
 338         public boolean isLocalSone(String id) {
 339                 synchronized (localSones) {
 340                         return localSones.containsKey(id);
 341                 }
 342         }
 343
 344         /**
 345          * Returns all local Sones.
 346          *
 347          * @return All local Sones
 348          */
 349         public Set<Sone> getLocalSones() {
 350                 synchronized (localSones) {
 351                         return new HashSet<Sone>(localSones.values());
 352                 }
 353         }
 354
 355         /**
 356          * Returns the local Sone with the given ID.
 357          *
 358          * @param id
 359          *            The ID of the Sone to get
 360          * @return The Sone with the given ID
 361          */
 362         public Sone getLocalSone(String id) {
 363                 return getLocalSone(id, true);
 364         }
 365
 366         /**
 367          * Returns the local Sone with the given ID, optionally creating a new Sone.
 368          *
 369          * @param id
 370          *            The ID of the Sone
 371          * @param create
 372          *            {@code true} to create a new Sone if none exists,
 373          *            {@code false} to return null if none exists
 374          * @return The Sone with the given ID, or {@code null}
 375          */
 376         public Sone getLocalSone(String id, boolean create) {
 377                 synchronized (localSones) {
 378                         Sone sone = localSones.get(id);
 379                         if ((sone == null) && create) {
 380                                 sone = new Sone(id);
 381                                 localSones.put(id, sone);
 382                         }
 383                         return sone;
 384                 }
 385         }
 386
 387         /**
 388          * Returns all remote Sones.
 389          *
 390          * @return All remote Sones
 391          */
 392         public Set<Sone> getRemoteSones() {
 393                 synchronized (remoteSones) {
 394                         return new HashSet<Sone>(remoteSones.values());
 395                 }
 396         }
 397
 398         /**
 399          * Returns the remote Sone with the given ID.
 400          *
 401          * @param id
 402          *            The ID of the remote Sone to get
 403          * @return The Sone with the given ID
 404          */
 405         public Sone getRemoteSone(String id) {
 406                 return getRemoteSone(id, true);
 407         }
 408
 409         /**
 410          * Returns the remote Sone with the given ID.
 411          *
 412          * @param id
 413          *            The ID of the remote Sone to get
 414          * @param create
 415          *            {@code true} to always create a Sone, {@code false} to return
 416          *            {@code null} if no Sone with the given ID exists
 417          * @return The Sone with the given ID
 418          */
 419         public Sone getRemoteSone(String id, boolean create) {
 420                 synchronized (remoteSones) {
 421                         Sone sone = remoteSones.get(id);
 422                         if ((sone == null) && create) {
 423                                 sone = new Sone(id);
 424                                 remoteSones.put(id, sone);
 425                         }
 426                         return sone;
 427                 }
 428         }
 429
 430         /**
 431          * Returns whether the given Sone is a remote Sone.
 432          *
 433          * @param sone
 434          *            The Sone to check
 435          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 436          *         otherwise
 437          */
 438         public boolean isRemoteSone(Sone sone) {
 439                 synchronized (remoteSones) {
 440                         return remoteSones.containsKey(sone.getId());
 441                 }
 442         }
 443
 444         /**
 445          * Returns whether the Sone with the given ID is a remote Sone.
 446          *
 447          * @param id
 448          *            The ID of the Sone to check
 449          * @return {@code true} if the Sone with the given ID is a remote Sone,
 450          *         {@code false} otherwise
 451          */
 452         public boolean isRemoteSone(String id) {
 453                 synchronized (remoteSones) {
 454                         return remoteSones.containsKey(id);
 455                 }
 456         }
 457
 458         /**
 459          * Returns whether the given Sone is a new Sone. After this check, the Sone
 460          * is marked as known, i.e. a second call with the same parameters will
 461          * always yield {@code false}.
 462          *
 463          * @param sone
 464          *            The sone to check for
 465          * @return {@code true} if the given Sone is new, false otherwise
 466          */
 467         public boolean isNewSone(Sone sone) {
 468                 synchronized (newSones) {
 469                         boolean isNew = !knownSones.contains(sone.getId()) && newSones.remove(sone.getId());
 470                         knownSones.add(sone.getId());
 471                         if (isNew) {
 472                                 coreListenerManager.fireMarkSoneKnown(sone);
 473                         }
 474                         return isNew;
 475                 }
 476         }
 477
 478         /**
 479          * Returns whether the given Sone has been modified.
 480          *
 481          * @param sone
 482          *            The Sone to check for modifications
 483          * @return {@code true} if a modification has been detected in the Sone,
 484          *         {@code false} otherwise
 485          */
 486         public boolean isModifiedSone(Sone sone) {
 487                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 488         }
 489
 490         /**
 491          * Returns the post with the given ID.
 492          *
 493          * @param postId
 494          *            The ID of the post to get
 495          * @return The post, or {@code null} if there is no such post
 496          */
 497         public Post getPost(String postId) {
 498                 return getPost(postId, true);
 499         }
 500
 501         /**
 502          * Returns the post with the given ID, optionally creating a new post.
 503          *
 504          * @param postId
 505          *            The ID of the post to get
 506          * @param create
 507          *            {@code true} it create a new post if no post with the given ID
 508          *            exists, {@code false} to return {@code null}
 509          * @return The post, or {@code null} if there is no such post
 510          */
 511         public Post getPost(String postId, boolean create) {
 512                 synchronized (posts) {
 513                         Post post = posts.get(postId);
 514                         if ((post == null) && create) {
 515                                 post = new Post(postId);
 516                                 posts.put(postId, post);
 517                         }
 518                         return post;
 519                 }
 520         }
 521
 522         /**
 523          * Returns whether the given post ID is new. After this method returns it is
 524          * marked a known post ID.
 525          *
 526          * @param postId
 527          *            The post ID
 528          * @return {@code true} if the post is considered to be new, {@code false}
 529          *         otherwise
 530          */
 531         public boolean isNewPost(String postId) {
 532                 synchronized (newPosts) {
 533                         boolean isNew = !knownPosts.contains(postId) && newPosts.remove(postId);
 534                         knownPosts.add(postId);
 535                         if (isNew) {
 536                                 coreListenerManager.fireMarkPostKnown(getPost(postId));
 537                         }
 538                         return isNew;
 539                 }
 540         }
 541
 542         /**
 543          * Returns the reply with the given ID.
 544          *
 545          * @param replyId
 546          *            The ID of the reply to get
 547          * @return The reply, or {@code null} if there is no such reply
 548          */
 549         public Reply getReply(String replyId) {
 550                 synchronized (replies) {
 551                         Reply reply = replies.get(replyId);
 552                         if (reply == null) {
 553                                 reply = new Reply(replyId);
 554                                 replies.put(replyId, reply);
 555                         }
 556                         return reply;
 557                 }
 558         }
 559
 560         /**
 561          * Returns all replies for the given post, order ascending by time.
 562          *
 563          * @param post
 564          *            The post to get all replies for
 565          * @return All replies for the given post
 566          */
 567         public List<Reply> getReplies(Post post) {
 568                 Set<Sone> sones = getSones();
 569                 List<Reply> replies = new ArrayList<Reply>();
 570                 for (Sone sone : sones) {
 571                         for (Reply reply : sone.getReplies()) {
 572                                 if (reply.getPost().equals(post)) {
 573                                         replies.add(reply);
 574                                 }
 575                         }
 576                 }
 577                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 578                 return replies;
 579         }
 580
 581         /**
 582          * Returns whether the reply with the given ID is new.
 583          *
 584          * @param replyId
 585          *            The ID of the reply to check
 586          * @return {@code true} if the reply is considered to be new, {@code false}
 587          *         otherwise
 588          */
 589         public boolean isNewReply(String replyId) {
 590                 synchronized (newReplies) {
 591                         boolean isNew = !knownReplies.contains(replyId) && newReplies.remove(replyId);
 592                         knownReplies.add(replyId);
 593                         if (isNew) {
 594                                 coreListenerManager.fireMarkReplyKnown(getReply(replyId));
 595                         }
 596                         return isNew;
 597                 }
 598         }
 599
 600         /**
 601          * Returns all Sones that have liked the given post.
 602          *
 603          * @param post
 604          *            The post to get the liking Sones for
 605          * @return The Sones that like the given post
 606          */
 607         public Set<Sone> getLikes(Post post) {
 608                 Set<Sone> sones = new HashSet<Sone>();
 609                 for (Sone sone : getSones()) {
 610                         if (sone.getLikedPostIds().contains(post.getId())) {
 611                                 sones.add(sone);
 612                         }
 613                 }
 614                 return sones;
 615         }
 616
 617         /**
 618          * Returns all Sones that have liked the given reply.
 619          *
 620          * @param reply
 621          *            The reply to get the liking Sones for
 622          * @return The Sones that like the given reply
 623          */
 624         public Set<Sone> getLikes(Reply reply) {
 625                 Set<Sone> sones = new HashSet<Sone>();
 626                 for (Sone sone : getSones()) {
 627                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 628                                 sones.add(sone);
 629                         }
 630                 }
 631                 return sones;
 632         }
 633
 634         //
 635         // ACTIONS
 636         //
 637
 638         /**
 639          * Locks the given Sone. A locked Sone will not be inserted by
 640          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 641          * again.
 642          *
 643          * @param sone
 644          *            The sone to lock
 645          */
 646         public void lockSone(Sone sone) {
 647                 synchronized (lockedSones) {
 648                         lockedSones.add(sone);
 649                 }
 650         }
 651
 652         /**
 653          * Unlocks the given Sone.
 654          *
 655          * @see #lockSone(Sone)
 656          * @param sone
 657          *            The sone to unlock
 658          */
 659         public void unlockSone(Sone sone) {
 660                 synchronized (lockedSones) {
 661                         lockedSones.remove(sone);
 662                 }
 663         }
 664
 665         /**
 666          * Adds a local Sone from the given ID which has to be the ID of an own
 667          * identity.
 668          *
 669          * @param id
 670          *            The ID of an own identity to add a Sone for
 671          * @return The added (or already existing) Sone
 672          */
 673         public Sone addLocalSone(String id) {
 674                 synchronized (localSones) {
 675                         if (localSones.containsKey(id)) {
 676                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 677                                 return localSones.get(id);
 678                         }
 679                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 680                         if (ownIdentity == null) {
 681                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 682                                 return null;
 683                         }
 684                         return addLocalSone(ownIdentity);
 685                 }
 686         }
 687
 688         /**
 689          * Adds a local Sone from the given own identity.
 690          *
 691          * @param ownIdentity
 692          *            The own identity to create a Sone from
 693          * @return The added (or already existing) Sone
 694          */
 695         public Sone addLocalSone(OwnIdentity ownIdentity) {
 696                 if (ownIdentity == null) {
 697                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 698                         return null;
 699                 }
 700                 synchronized (localSones) {
 701                         final Sone sone;
 702                         try {
 703                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 704                         } catch (MalformedURLException mue1) {
 705                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 706                                 return null;
 707                         }
 708                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 709                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 710                         /* TODO - load posts ’n stuff */
 711                         localSones.put(ownIdentity.getId(), sone);
 712                         final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 713                         soneInserters.put(sone, soneInserter);
 714                         setSoneStatus(sone, SoneStatus.idle);
 715                         loadSone(sone);
 716                         if (!isSoneRescueMode()) {
 717                                 soneInserter.start();
 718                         }
 719                         new Thread(new Runnable() {
 720
 721                                 @Override
 722                                 @SuppressWarnings("synthetic-access")
 723                                 public void run() {
 724                                         if (!isSoneRescueMode()) {
 725                                                 soneDownloader.fetchSone(sone);
 726                                                 return;
 727                                         }
 728                                         logger.log(Level.INFO, "Trying to restore Sone from Freenet…");
 729                                         coreListenerManager.fireRescuingSone(sone);
 730                                         lockSone(sone);
 731                                         long edition = sone.getLatestEdition();
 732                                         while (!stopped && (edition >= 0) && isSoneRescueMode()) {
 733                                                 logger.log(Level.FINE, "Downloading edition " + edition + "…");
 734                                                 soneDownloader.fetchSone(sone, sone.getRequestUri().setKeyType("SSK").setDocName("Sone-" + edition));
 735                                                 --edition;
 736                                         }
 737                                         logger.log(Level.INFO, "Finished restoring Sone from Freenet, starting Inserter…");
 738                                         coreListenerManager.fireRescuedSone(sone);
 739                                         soneInserter.start();
 740                                 }
 741
 742                         }, "Sone Downloader").start();
 743                         return sone;
 744                 }
 745         }
 746
 747         /**
 748          * Creates a new Sone for the given own identity.
 749          *
 750          * @param ownIdentity
 751          *            The own identity to create a Sone for
 752          * @return The created Sone
 753          */
 754         public Sone createSone(OwnIdentity ownIdentity) {
 755                 identityManager.addContext(ownIdentity, "Sone");
 756                 Sone sone = addLocalSone(ownIdentity);
 757                 return sone;
 758         }
 759
 760         /**
 761          * Adds the Sone of the given identity.
 762          *
 763          * @param identity
 764          *            The identity whose Sone to add
 765          * @return The added or already existing Sone
 766          */
 767         public Sone addRemoteSone(Identity identity) {
 768                 if (identity == null) {
 769                         logger.log(Level.WARNING, "Given Identity is null!");
 770                         return null;
 771                 }
 772                 synchronized (remoteSones) {
 773                         final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
 774                         boolean newSone = sone.getRequestUri() == null;
 775                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 776                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 777                         if (newSone) {
 778                                 synchronized (newSones) {
 779                                         newSone = !knownSones.contains(sone.getId());
 780                                         if (newSone) {
 781                                                 newSones.add(sone.getId());
 782                                         }
 783                                 }
 784                                 if (newSone) {
 785                                         coreListenerManager.fireNewSoneFound(sone);
 786                                 }
 787                         }
 788                         remoteSones.put(identity.getId(), sone);
 789                         soneDownloader.addSone(sone);
 790                         setSoneStatus(sone, SoneStatus.unknown);
 791                         new Thread(new Runnable() {
 792
 793                                 @Override
 794                                 @SuppressWarnings("synthetic-access")
 795                                 public void run() {
 796                                         soneDownloader.fetchSone(sone);
 797                                 }
 798
 799                         }, "Sone Downloader").start();
 800                         return sone;
 801                 }
 802         }
 803
 804         /**
 805          * Updates the stores Sone with the given Sone.
 806          *
 807          * @param sone
 808          *            The updated Sone
 809          */
 810         public void updateSone(Sone sone) {
 811                 if (hasSone(sone.getId())) {
 812                         boolean soneRescueMode = isLocalSone(sone) && isSoneRescueMode();
 813                         Sone storedSone = getSone(sone.getId());
 814                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
 815                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
 816                                 return;
 817                         }
 818                         synchronized (posts) {
 819                                 if (!soneRescueMode) {
 820                                         for (Post post : storedSone.getPosts()) {
 821                                                 posts.remove(post.getId());
 822                                         }
 823                                 }
 824                                 synchronized (newPosts) {
 825                                         for (Post post : sone.getPosts()) {
 826                                                 post.setSone(getSone(post.getSone().getId()));
 827                                                 if (!storedSone.getPosts().contains(post) && !knownPosts.contains(post.getId())) {
 828                                                         newPosts.add(post.getId());
 829                                                         coreListenerManager.fireNewPostFound(post);
 830                                                 }
 831                                                 posts.put(post.getId(), post);
 832                                         }
 833                                 }
 834                         }
 835                         synchronized (replies) {
 836                                 if (!soneRescueMode) {
 837                                         for (Reply reply : storedSone.getReplies()) {
 838                                                 replies.remove(reply.getId());
 839                                         }
 840                                 }
 841                                 synchronized (newReplies) {
 842                                         for (Reply reply : sone.getReplies()) {
 843                                                 reply.setSone(getSone(reply.getSone().getId()));
 844                                                 if (!storedSone.getReplies().contains(reply) && !knownReplies.contains(reply.getId())) {
 845                                                         newReplies.add(reply.getId());
 846                                                         coreListenerManager.fireNewReplyFound(reply);
 847                                                 }
 848                                                 replies.put(reply.getId(), reply);
 849                                         }
 850                                 }
 851                         }
 852                         synchronized (storedSone) {
 853                                 storedSone.setTime(sone.getTime());
 854                                 storedSone.setClient(sone.getClient());
 855                                 storedSone.setProfile(sone.getProfile());
 856                                 if (soneRescueMode) {
 857                                         for (Post post : sone.getPosts()) {
 858                                                 storedSone.addPost(post);
 859                                         }
 860                                         for (Reply reply : sone.getReplies()) {
 861                                                 storedSone.addReply(reply);
 862                                         }
 863                                         for (String likedPostId : sone.getLikedPostIds()) {
 864                                                 storedSone.addLikedPostId(likedPostId);
 865                                         }
 866                                         for (String likedReplyId : sone.getLikedReplyIds()) {
 867                                                 storedSone.addLikedReplyId(likedReplyId);
 868                                         }
 869                                 } else {
 870                                         storedSone.setPosts(sone.getPosts());
 871                                         storedSone.setReplies(sone.getReplies());
 872                                         storedSone.setLikePostIds(sone.getLikedPostIds());
 873                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
 874                                 }
 875                                 storedSone.setLatestEdition(sone.getRequestUri().getEdition());
 876                         }
 877                 }
 878         }
 879
 880         /**
 881          * Deletes the given Sone. This will remove the Sone from the
 882          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
 883          * and remove the context from its identity.
 884          *
 885          * @param sone
 886          *            The Sone to delete
 887          */
 888         public void deleteSone(Sone sone) {
 889                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 890                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
 891                         return;
 892                 }
 893                 synchronized (localSones) {
 894                         if (!localSones.containsKey(sone.getId())) {
 895                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
 896                                 return;
 897                         }
 898                         localSones.remove(sone.getId());
 899                         soneInserters.remove(sone).stop();
 900                 }
 901                 identityManager.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 902                 identityManager.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 903                 try {
 904                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 905                 } catch (ConfigurationException ce1) {
 906                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 907                 }
 908         }
 909
 910         /**
 911          * Loads and updates the given Sone from the configuration. If any error is
 912          * encountered, loading is aborted and the given Sone is not changed.
 913          *
 914          * @param sone
 915          *            The Sone to load and update
 916          */
 917         public void loadSone(Sone sone) {
 918                 if (!isLocalSone(sone)) {
 919                         logger.log(Level.FINE, "Tried to load non-local Sone: %s", sone);
 920                         return;
 921                 }
 922
 923                 /* load Sone. */
 924                 String sonePrefix = "Sone/" + sone.getId();
 925                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
 926                 if (soneTime == null) {
 927                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
 928                         return;
 929                 }
 930                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
 931
 932                 /* load profile. */
 933                 Profile profile = new Profile();
 934                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
 935                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
 936                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
 937                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
 938                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
 939                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
 940
 941                 /* load posts. */
 942                 Set<Post> posts = new HashSet<Post>();
 943                 while (true) {
 944                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
 945                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
 946                         if (postId == null) {
 947                                 break;
 948                         }
 949                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
 950                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
 951                         if ((postTime == 0) || (postText == null)) {
 952                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
 953                                 return;
 954                         }
 955                         posts.add(getPost(postId).setSone(sone).setTime(postTime).setText(postText));
 956                 }
 957
 958                 /* load replies. */
 959                 Set<Reply> replies = new HashSet<Reply>();
 960                 while (true) {
 961                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
 962                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
 963                         if (replyId == null) {
 964                                 break;
 965                         }
 966                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
 967                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
 968                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
 969                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
 970                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
 971                                 return;
 972                         }
 973                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
 974                 }
 975
 976                 /* load post likes. */
 977                 Set<String> likedPostIds = new HashSet<String>();
 978                 while (true) {
 979                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
 980                         if (likedPostId == null) {
 981                                 break;
 982                         }
 983                         likedPostIds.add(likedPostId);
 984                 }
 985
 986                 /* load reply likes. */
 987                 Set<String> likedReplyIds = new HashSet<String>();
 988                 while (true) {
 989                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
 990                         if (likedReplyId == null) {
 991                                 break;
 992                         }
 993                         likedReplyIds.add(likedReplyId);
 994                 }
 995
 996                 /* load friends. */
 997                 Set<String> friends = new HashSet<String>();
 998                 while (true) {
 999                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1000                         if (friendId == null) {
1001                                 break;
1002                         }
1003                         friends.add(friendId);
1004                 }
1005
1006                 /* if we’re still here, Sone was loaded successfully. */
1007                 synchronized (sone) {
1008                         sone.setTime(soneTime);
1009                         sone.setProfile(profile);
1010                         sone.setPosts(posts);
1011                         sone.setReplies(replies);
1012                         sone.setLikePostIds(likedPostIds);
1013                         sone.setLikeReplyIds(likedReplyIds);
1014                         sone.setFriends(friends);
1015                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1016                 }
1017                 synchronized (newSones) {
1018                         for (String friend : friends) {
1019                                 knownSones.add(friend);
1020                         }
1021                 }
1022                 synchronized (newPosts) {
1023                         for (Post post : posts) {
1024                                 knownPosts.add(post.getId());
1025                         }
1026                 }
1027                 synchronized (newReplies) {
1028                         for (Reply reply : replies) {
1029                                 knownReplies.add(reply.getId());
1030                         }
1031                 }
1032         }
1033
1034         /**
1035          * Saves the given Sone. This will persist all local settings for the given
1036          * Sone, such as the friends list and similar, private options.
1037          *
1038          * @param sone
1039          *            The Sone to save
1040          */
1041         public void saveSone(Sone sone) {
1042                 if (!isLocalSone(sone)) {
1043                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
1044                         return;
1045                 }
1046                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1047                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
1048                         return;
1049                 }
1050
1051                 logger.log(Level.INFO, "Saving Sone: %s", sone);
1052                 identityManager.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1053                 try {
1054                         /* save Sone into configuration. */
1055                         String sonePrefix = "Sone/" + sone.getId();
1056                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1057                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1058
1059                         /* save profile. */
1060                         Profile profile = sone.getProfile();
1061                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1062                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1063                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1064                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1065                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1066                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1067
1068                         /* save posts. */
1069                         int postCounter = 0;
1070                         for (Post post : sone.getPosts()) {
1071                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1072                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1073                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1074                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1075                         }
1076                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1077
1078                         /* save replies. */
1079                         int replyCounter = 0;
1080                         for (Reply reply : sone.getReplies()) {
1081                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1082                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1083                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1084                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1085                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1086                         }
1087                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1088
1089                         /* save post likes. */
1090                         int postLikeCounter = 0;
1091                         for (String postId : sone.getLikedPostIds()) {
1092                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1093                         }
1094                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1095
1096                         /* save reply likes. */
1097                         int replyLikeCounter = 0;
1098                         for (String replyId : sone.getLikedReplyIds()) {
1099                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1100                         }
1101                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1102
1103                         /* save friends. */
1104                         int friendCounter = 0;
1105                         for (String friendId : sone.getFriends()) {
1106                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1107                         }
1108                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1109
1110                         logger.log(Level.INFO, "Sone %s saved.", sone);
1111                 } catch (ConfigurationException ce1) {
1112                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
1113                 }
1114         }
1115
1116         /**
1117          * Creates a new post.
1118          *
1119          * @param sone
1120          *            The Sone that creates the post
1121          * @param text
1122          *            The text of the post
1123          */
1124         public void createPost(Sone sone, String text) {
1125                 createPost(sone, System.currentTimeMillis(), text);
1126         }
1127
1128         /**
1129          * Creates a new post.
1130          *
1131          * @param sone
1132          *            The Sone that creates the post
1133          * @param time
1134          *            The time of the post
1135          * @param text
1136          *            The text of the post
1137          */
1138         public void createPost(Sone sone, long time, String text) {
1139                 if (!isLocalSone(sone)) {
1140                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
1141                         return;
1142                 }
1143                 Post post = new Post(sone, time, text);
1144                 synchronized (posts) {
1145                         posts.put(post.getId(), post);
1146                 }
1147                 synchronized (newPosts) {
1148                         knownPosts.add(post.getId());
1149                 }
1150                 sone.addPost(post);
1151                 saveSone(sone);
1152         }
1153
1154         /**
1155          * Deletes the given post.
1156          *
1157          * @param post
1158          *            The post to delete
1159          */
1160         public void deletePost(Post post) {
1161                 if (!isLocalSone(post.getSone())) {
1162                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
1163                         return;
1164                 }
1165                 post.getSone().removePost(post);
1166                 synchronized (posts) {
1167                         posts.remove(post.getId());
1168                 }
1169                 saveSone(post.getSone());
1170         }
1171
1172         /**
1173          * Creates a new reply.
1174          *
1175          * @param sone
1176          *            The Sone that creates the reply
1177          * @param post
1178          *            The post that this reply refers to
1179          * @param text
1180          *            The text of the reply
1181          * @return The created reply
1182          */
1183         public Reply createReply(Sone sone, Post post, String text) {
1184                 return createReply(sone, post, System.currentTimeMillis(), text);
1185         }
1186
1187         /**
1188          * Creates a new reply.
1189          *
1190          * @param sone
1191          *            The Sone that creates the reply
1192          * @param post
1193          *            The post that this reply refers to
1194          * @param time
1195          *            The time of the reply
1196          * @param text
1197          *            The text of the reply
1198          * @return The created reply
1199          */
1200         public Reply createReply(Sone sone, Post post, long time, String text) {
1201                 if (!isLocalSone(sone)) {
1202                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
1203                         return null;
1204                 }
1205                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
1206                 synchronized (replies) {
1207                         replies.put(reply.getId(), reply);
1208                 }
1209                 synchronized (newReplies) {
1210                         knownReplies.add(reply.getId());
1211                 }
1212                 sone.addReply(reply);
1213                 saveSone(sone);
1214                 return reply;
1215         }
1216
1217         /**
1218          * Deletes the given reply.
1219          *
1220          * @param reply
1221          *            The reply to delete
1222          */
1223         public void deleteReply(Reply reply) {
1224                 Sone sone = reply.getSone();
1225                 if (!isLocalSone(sone)) {
1226                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
1227                         return;
1228                 }
1229                 synchronized (replies) {
1230                         replies.remove(reply.getId());
1231                 }
1232                 sone.removeReply(reply);
1233                 saveSone(sone);
1234         }
1235
1236         /**
1237          * Starts the core.
1238          */
1239         public void start() {
1240                 loadConfiguration();
1241         }
1242
1243         /**
1244          * Stops the core.
1245          */
1246         public void stop() {
1247                 synchronized (localSones) {
1248                         for (SoneInserter soneInserter : soneInserters.values()) {
1249                                 soneInserter.stop();
1250                         }
1251                 }
1252                 saveConfiguration();
1253                 stopped = true;
1254         }
1255
1256         //
1257         // PRIVATE METHODS
1258         //
1259
1260         /**
1261          * Loads the configuration.
1262          */
1263         @SuppressWarnings("unchecked")
1264         private void loadConfiguration() {
1265                 /* create options. */
1266                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
1267
1268                         @Override
1269                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1270                                 SoneInserter.setInsertionDelay(newValue);
1271                         }
1272
1273                 }));
1274                 options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
1275                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
1276                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
1277
1278                 /* read options from configuration. */
1279                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
1280                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
1281                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
1282                 options.getBooleanOption("ClearOnNextRestart").set(null);
1283                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
1284                 if (clearConfiguration) {
1285                         /* stop loading the configuration. */
1286                         return;
1287                 }
1288
1289                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
1290                 options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
1291
1292                 /* load known Sones. */
1293                 int soneCounter = 0;
1294                 while (true) {
1295                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1296                         if (knownSoneId == null) {
1297                                 break;
1298                         }
1299                         synchronized (newSones) {
1300                                 knownSones.add(knownSoneId);
1301                         }
1302                 }
1303
1304                 /* load known posts. */
1305                 int postCounter = 0;
1306                 while (true) {
1307                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
1308                         if (knownPostId == null) {
1309                                 break;
1310                         }
1311                         synchronized (newPosts) {
1312                                 knownPosts.add(knownPostId);
1313                         }
1314                 }
1315
1316                 /* load known replies. */
1317                 int replyCounter = 0;
1318                 while (true) {
1319                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
1320                         if (knownReplyId == null) {
1321                                 break;
1322                         }
1323                         synchronized (newReplies) {
1324                                 knownReplies.add(knownReplyId);
1325                         }
1326                 }
1327
1328         }
1329
1330         /**
1331          * Saves the current options.
1332          */
1333         private void saveConfiguration() {
1334                 /* store the options first. */
1335                 try {
1336                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1337                         configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
1338                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
1339                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
1340
1341                         /* save known Sones. */
1342                         int soneCounter = 0;
1343                         synchronized (newSones) {
1344                                 for (String knownSoneId : knownSones) {
1345                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1346                                 }
1347                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1348                         }
1349
1350                         /* save known posts. */
1351                         int postCounter = 0;
1352                         synchronized (newPosts) {
1353                                 for (String knownPostId : knownPosts) {
1354                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
1355                                 }
1356                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
1357                         }
1358
1359                         /* save known replies. */
1360                         int replyCounter = 0;
1361                         synchronized (newReplies) {
1362                                 for (String knownReplyId : knownReplies) {
1363                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
1364                                 }
1365                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
1366                         }
1367
1368                 } catch (ConfigurationException ce1) {
1369                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1370                 }
1371         }
1372
1373         /**
1374          * Generate a Sone URI from the given URI and latest edition.
1375          *
1376          * @param uriString
1377          *            The URI to derive the Sone URI from
1378          * @return The derived URI
1379          */
1380         private FreenetURI getSoneUri(String uriString) {
1381                 try {
1382                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
1383                         return uri;
1384                 } catch (MalformedURLException mue1) {
1385                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
1386                         return null;
1387                 }
1388         }
1389
1390         //
1391         // INTERFACE IdentityListener
1392         //
1393
1394         /**
1395          * {@inheritDoc}
1396          */
1397         @Override
1398         public void ownIdentityAdded(OwnIdentity ownIdentity) {
1399                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
1400                 if (ownIdentity.hasContext("Sone")) {
1401                         addLocalSone(ownIdentity);
1402                 }
1403         }
1404
1405         /**
1406          * {@inheritDoc}
1407          */
1408         @Override
1409         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
1410                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
1411         }
1412
1413         /**
1414          * {@inheritDoc}
1415          */
1416         @Override
1417         public void identityAdded(Identity identity) {
1418                 logger.log(Level.FINEST, "Adding Identity: " + identity);
1419                 addRemoteSone(identity);
1420         }
1421
1422         /**
1423          * {@inheritDoc}
1424          */
1425         @Override
1426         public void identityUpdated(final Identity identity) {
1427                 new Thread(new Runnable() {
1428
1429                         @Override
1430                         @SuppressWarnings("synthetic-access")
1431                         public void run() {
1432                                 Sone sone = getRemoteSone(identity.getId());
1433                                 soneDownloader.fetchSone(sone);
1434                         }
1435                 }).start();
1436         }
1437
1438         /**
1439          * {@inheritDoc}
1440          */
1441         @Override
1442         public void identityRemoved(Identity identity) {
1443                 /* TODO */
1444         }
1445
1446 }