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