src/DownloadQueue.cpp

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2003-2008 aMule Team ( admin@amule.org / http://www.amule.org )
   5 // Copyright (c) 2002-2008 Merkur ( devs@emule-project.net / http://www.emule-project.net )
   6 //
   7 // Any parts of this program derived from the xMule, lMule or eMule project,
   8 // or contributed by third-party developers are copyrighted by their
   9 // respective authors.
  10 //
  11 // This program is free software; you can redistribute it and/or modify
  12 // it under the terms of the GNU General Public License as published by
  13 // the Free Software Foundation; either version 2 of the License, or
  14 // (at your option) any later version.
  15 //
  16 // This program is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20 //
  21 // You should have received a copy of the GNU General Public License
  22 // along with this program; if not, write to the Free Software
  23 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  24 //
  25
  26 #include "DownloadQueue.h"      // Interface declarations
  27
  28 #include <protocol/Protocols.h>
  29 #include <protocol/kad/Constants.h>
  30 #include <common/Macros.h>
  31 #include <common/MenuIDs.h>
  32 #include <common/Constants.h>
  33
  34 #include <wx/textfile.h>        // Needed for wxTextFile
  35 #include <wx/utils.h>
  36
  37 #include "Server.h"             // Needed for CServer
  38 #include "Packet.h"             // Needed for CPacket
  39 #include "MemFile.h"            // Needed for CMemFile
  40 #include "ClientList.h"         // Needed for CClientList
  41 #include "updownclient.h"       // Needed for CUpDownClient
  42 #include "ServerList.h"         // Needed for CServerList
  43 #include "ServerConnect.h"      // Needed for CServerConnect
  44 #include "ED2KLink.h"           // Needed for CED2KFileLink
  45 #include "SearchList.h"         // Needed for CSearchFile
  46 #include "SharedFileList.h"     // Needed for CSharedFileList
  47 #include "PartFile.h"           // Needed for CPartFile
  48 #include "Preferences.h"        // Needed for thePrefs
  49 #include "amule.h"              // Needed for theApp
  50 #include "AsyncDNS.h"           // Needed for CAsyncDNS
  51 #include "Statistics.h"         // Needed for theStats
  52 #include "Logger.h"
  53 #include <common/Format.h>      // Needed for CFormat
  54 #include "IPFilter.h"
  55 #include <common/FileFunctions.h>       // Needed for CDirIterator
  56 #include "FileLock.h"           // Needed for CFileLock
  57 #include "GuiEvents.h"          // Needed for Notify_*
  58 #include "UserEvents.h"
  59 #include "MagnetURI.h"          // Needed for CMagnetED2KConverter
  60 #include "ScopedPtr.h"          // Needed for CScopedPtr
  61 #include "PlatformSpecific.h"   // Needed for CanFSHandleLargeFiles
  62
  63 #include "kademlia/kademlia/Kademlia.h"
  64
  65 #include <string>                       // Do_not_auto_remove (mingw-gcc-3.4.5)
  66
  67
  68 // Max. file IDs per UDP packet
  69 // ----------------------------
  70 // 576 - 30 bytes of header (28 for UDP, 2 for "E3 9A" edonkey proto) = 546 bytes
  71 // 546 / 16 = 34
  72
  73
  74 #define MAX_FILES_PER_UDP_PACKET        31      // 2+16*31 = 498 ... is still less than 512 bytes!!
  75 #define MAX_REQUESTS_PER_SERVER         35
  76
  77
  78 CDownloadQueue::CDownloadQueue()
  79 // Needs to be recursive that that is can own an observer assigned to itself
  80         : m_mutex( wxMUTEX_RECURSIVE )
  81 {
  82         m_datarate = 0;
  83         m_udpserver = 0;
  84         m_lastsorttime = 0;
  85         m_lastudpsearchtime = 0;
  86         m_lastudpstattime = 0;
  87         m_udcounter = 0;
  88         m_nLastED2KLinkCheck = 0;
  89         m_dwNextTCPSrcReq = 0;
  90         m_cRequestsSentToServer = 0;
  91         m_lastDiskCheck = 0;
  92         SetLastKademliaFileRequest();
  93 }
  94
  95
  96 CDownloadQueue::~CDownloadQueue()
  97 {
  98         if ( !m_filelist.empty() ) {
  99                 for ( unsigned int i = 0; i < m_filelist.size(); i++ ) {
 100                         AddLogLineNS(CFormat(_("Saving PartFile %u of %u")) % (i + 1) % m_filelist.size());
 101                         delete m_filelist[i];
 102                 }
 103                 AddLogLineNS(_("All PartFiles Saved."));
 104         }
 105 }
 106
 107
 108 void CDownloadQueue::LoadMetFiles(const CPath& path)
 109 {
 110         AddLogLineNS(CFormat(_("Loading temp files from %s.")) % path.GetPrintable());
 111
 112         std::vector<CPath> files;
 113
 114         // Locate part-files to be loaded
 115         CDirIterator TempDir(path);
 116         CPath fileName = TempDir.GetFirstFile(CDirIterator::File, wxT("*.part.met"));
 117         while (fileName.IsOk()) {
 118                 files.push_back(path.JoinPaths(fileName));
 119
 120                 fileName = TempDir.GetNextFile();
 121         }
 122
 123         // Loading in order makes it easier to figure which
 124         // file is broken in case of crashes, or the like.
 125         std::sort(files.begin(), files.end());
 126
 127         // Load part-files
 128         for ( size_t i = 0; i < files.size(); i++ ) {
 129                 AddLogLineNS(CFormat(_("Loading PartFile %u of %u")) % (i + 1) % files.size());
 130                 fileName = files[i].GetFullName();
 131                 CPartFile *toadd = new CPartFile();
 132                 bool result = toadd->LoadPartFile(path, fileName) != 0;
 133                 if (!result) {
 134                         // Try from backup
 135                         result = toadd->LoadPartFile(path, fileName, true) != 0;
 136                 }
 137                 if (result && !IsFileExisting(toadd->GetFileHash())) {
 138                         {
 139                                 wxMutexLocker lock(m_mutex);
 140                                 m_filelist.push_back(toadd);
 141                         }
 142                         NotifyObservers(EventType(EventType::INSERTED, toadd));
 143                         Notify_DownloadCtrlAddFile(toadd);
 144                 } else {
 145                         wxString msg;
 146                         if (result) {
 147                                 msg << CFormat(wxT("WARNING: Duplicate partfile with hash '%s' found, skipping: %s"))
 148                                         % toadd->GetFileHash().Encode() % fileName;
 149                         } else {
 150                                 // If result is false, then reading of both the primary and the backup .met failed
 151                                 AddLogLineM(false,
 152                                         _("ERROR: Failed to load backup file. Search http://forum.amule.org for .part.met recovery solutions."));
 153                                 msg << CFormat(wxT("ERROR: Failed to load PartFile '%s'")) % fileName;
 154                         }
 155                         AddLogLineCS(msg);
 156
 157                         // Delete the partfile object in the end.
 158                         delete toadd;
 159                 }
 160         }
 161         AddLogLineNS(_("All PartFiles Loaded."));
 162
 163         if ( GetFileCount() == 0 ) {
 164                 AddLogLineM(false, _("No part files found"));
 165         } else {
 166                 AddLogLineM(false, wxString::Format(wxPLURAL("Found %u part file", "Found %u part files", GetFileCount()), GetFileCount()) );
 167
 168                 DoSortByPriority();
 169                 CheckDiskspace( path );
 170         }
 171 }
 172
 173
 174 uint16 CDownloadQueue::GetFileCount() const
 175 {
 176         wxMutexLocker lock( m_mutex );
 177
 178         return m_filelist.size();
 179 }
 180
 181
 182 CServer* CDownloadQueue::GetUDPServer() const
 183 {
 184         wxMutexLocker lock( m_mutex );
 185
 186         return m_udpserver;
 187 }
 188
 189
 190 void CDownloadQueue::SetUDPServer( CServer* server )
 191 {
 192         wxMutexLocker lock( m_mutex );
 193
 194         m_udpserver = server;
 195 }
 196
 197
 198 void CDownloadQueue::SaveSourceSeeds()
 199 {
 200         for ( uint16 i = 0; i < GetFileCount(); i++ ) {
 201                 GetFileByIndex( i )->SaveSourceSeeds();
 202         }
 203 }
 204
 205
 206 void CDownloadQueue::LoadSourceSeeds()
 207 {
 208         for ( uint16 i = 0; i < GetFileCount(); i++ ) {
 209                 GetFileByIndex( i )->LoadSourceSeeds();
 210         }
 211 }
 212
 213
 214 void CDownloadQueue::AddSearchToDownload(CSearchFile* toadd, uint8 category)
 215 {
 216         if ( IsFileExisting(toadd->GetFileHash()) ) {
 217                 return;
 218         }
 219
 220         if (toadd->GetFileSize() > OLD_MAX_FILE_SIZE) {
 221                 if (!PlatformSpecific::CanFSHandleLargeFiles(thePrefs::GetTempDir())) {
 222                         AddLogLineM(true, _("Filesystem for Temp directory cannot handle large files."));
 223                         return;
 224                 } else if (!PlatformSpecific::CanFSHandleLargeFiles(theApp->glob_prefs->GetCatPath(category))) {
 225                         AddLogLineM(true, _("Filesystem for Incoming directory cannot handle large files."));
 226                         return;
 227                 }
 228         }
 229
 230         CPartFile* newfile = NULL;
 231         try {
 232                 newfile = new CPartFile(toadd);
 233         } catch (const CInvalidPacket& WXUNUSED(e)) {
 234                 AddDebugLogLineM(true, logDownloadQueue, wxT("Search-result contained invalid tags, could not add"));
 235         }
 236
 237         if ( newfile && newfile->GetStatus() != PS_ERROR ) {
 238                 AddDownload( newfile, thePrefs::AddNewFilesPaused(), category );
 239                 // Add any possible sources
 240                 if (toadd->GetClientID() && toadd->GetClientPort()) {
 241                         CMemFile sources(1+4+2);
 242                         sources.WriteUInt8(1);
 243                         sources.WriteUInt32(toadd->GetClientID());
 244                         sources.WriteUInt16(toadd->GetClientPort());
 245                         sources.Reset();
 246                         newfile->AddSources(sources, toadd->GetClientServerIP(), toadd->GetClientServerPort(), SF_SEARCH_RESULT, false);
 247                 }
 248                 for (std::list<CSearchFile::ClientStruct>::const_iterator it = toadd->GetClients().begin(); it != toadd->GetClients().end(); ++it) {
 249                         CMemFile sources(1+4+2);
 250                         sources.WriteUInt8(1);
 251                         sources.WriteUInt32(it->m_ip);
 252                         sources.WriteUInt16(it->m_port);
 253                         sources.Reset();
 254                         newfile->AddSources(sources, it->m_serverIP, it->m_serverPort, SF_SEARCH_RESULT, false);
 255                 }
 256         } else {
 257                 delete newfile;
 258         }
 259 }
 260
 261
 262 struct SFindBestPF
 263 {
 264         void operator()(CPartFile* file) {
 265                 // Check if we should filter out other categories
 266                 if ((m_category != -1) && (file->GetCategory() != m_category)) {
 267                         return;
 268                 } else if (file->GetStatus() != PS_PAUSED) {
 269                         return;
 270                 }
 271
 272                 if (!m_result || (file->GetDownPriority() > m_result->GetDownPriority())) {
 273                         m_result = file;
 274                 }
 275         }
 276
 277         //! The category to look for, or -1 if any category is good
 278         int m_category;
 279         //! If any acceptable files are found, this variable store their pointer
 280         CPartFile* m_result;
 281 };
 282
 283
 284 void CDownloadQueue::StartNextFile(CPartFile* oldfile)
 285 {
 286         if ( thePrefs::StartNextFile() ) {
 287                 SFindBestPF visitor = { -1, NULL };
 288
 289                 {
 290                         wxMutexLocker lock(m_mutex);
 291
 292                         if (thePrefs::StartNextFileSame()) {
 293                                 // Get a download in the same category
 294                                 visitor.m_category = oldfile->GetCategory();
 295
 296                                 visitor = std::for_each(m_filelist.begin(), m_filelist.end(), visitor);
 297                         }
 298
 299                         if (visitor.m_result == NULL) {
 300                                 // Get a download, regardless of category
 301                                 visitor.m_category = -1;
 302
 303                                 visitor = std::for_each(m_filelist.begin(), m_filelist.end(), visitor);
 304                         }
 305                 }
 306
 307                 if (visitor.m_result) {
 308                         visitor.m_result->ResumeFile();
 309                 }
 310         }
 311 }
 312
 313
 314 void CDownloadQueue::AddDownload(CPartFile* file, bool paused, uint8 category)
 315 {
 316         wxCHECK_RET(!IsFileExisting(file->GetFileHash()), wxT("Adding duplicate part-file"));
 317
 318         if (file->GetStatus(true) == PS_ALLOCATING) {
 319                 file->PauseFile();
 320         } else if (paused && GetFileCount()) {
 321                 file->StopFile();
 322         }
 323
 324         {
 325                 wxMutexLocker lock(m_mutex);
 326                 m_filelist.push_back( file );
 327                 DoSortByPriority();
 328         }
 329
 330         NotifyObservers( EventType( EventType::INSERTED, file ) );
 331
 332         file->SetCategory(category);
 333         Notify_DownloadCtrlAddFile( file );
 334         AddLogLineM(true, CFormat(_("Downloading %s")) % file->GetFileName() );
 335 }
 336
 337
 338 bool CDownloadQueue::IsFileExisting( const CMD4Hash& fileid ) const
 339 {
 340         if (CKnownFile* file = theApp->sharedfiles->GetFileByID(fileid)) {
 341                 if (file->IsPartFile()) {
 342                         AddLogLineM(true, CFormat( _("You are already trying to download the file '%s'") ) % file->GetFileName());
 343                 } else {
 344                         // Check if the file exists, since otherwise the user is forced to
 345                         // manually reload the shares to download a file again.
 346                         CPath fullpath = file->GetFilePath().JoinPaths(file->GetFileName());
 347                         if (!fullpath.FileExists()) {
 348                                 // The file is no longer available, unshare it
 349                                 theApp->sharedfiles->RemoveFile(file);
 350
 351                                 return false;
 352                         }
 353
 354                         AddLogLineM(true, CFormat( _("You already have the file '%s'") ) % file->GetFileName());
 355                 }
 356
 357                 return true;
 358         } else if ((file = GetFileByID(fileid))) {
 359                 AddLogLineM(true, CFormat( _("You are already trying to download the file %s") ) % file->GetFileName());
 360                 return true;
 361         }
 362
 363         return false;
 364 }
 365
 366
 367 void CDownloadQueue::Process()
 368 {
 369         // send src requests to local server
 370         ProcessLocalRequests();
 371
 372         {
 373                 wxMutexLocker lock(m_mutex);
 374
 375                 uint32 downspeed = 0;
 376                 if (thePrefs::GetMaxDownload() != UNLIMITED && m_datarate > 1500) {
 377                         downspeed = (((uint32)thePrefs::GetMaxDownload())*1024*100)/(m_datarate+1);
 378                         if (downspeed < 50) {
 379                                 downspeed = 50;
 380                         } else if (downspeed > 200) {
 381                                 downspeed = 200;
 382                         }
 383                 }
 384
 385                 m_datarate = 0;
 386                 m_udcounter++;
 387                 uint32 cur_datarate = 0;
 388                 uint32 cur_udcounter = m_udcounter;
 389
 390                 for ( uint16 i = 0; i < m_filelist.size(); i++ ) {
 391                         CPartFile* file = m_filelist[i];
 392
 393                         CMutexUnlocker unlocker(m_mutex);
 394
 395                         if ( file->GetStatus() == PS_READY || file->GetStatus() == PS_EMPTY ){
 396                                 cur_datarate += file->Process( downspeed, cur_udcounter );
 397                         } else {
 398                                 //This will make sure we don't keep old sources to paused and stoped files..
 399                                 file->StopPausedFile();
 400                         }
 401                 }
 402
 403                 m_datarate += cur_datarate;
 404
 405
 406                 if (m_udcounter == 5) {
 407                         if (theApp->serverconnect->IsUDPSocketAvailable()) {
 408                                 if( (::GetTickCount() - m_lastudpstattime) > UDPSERVERSTATTIME) {
 409                                         m_lastudpstattime = ::GetTickCount();
 410
 411                                         CMutexUnlocker unlocker(m_mutex);
 412                                         theApp->serverlist->ServerStats();
 413                                 }
 414                         }
 415                 }
 416
 417                 if (m_udcounter == 10) {
 418                         m_udcounter = 0;
 419                         if (theApp->serverconnect->IsUDPSocketAvailable()) {
 420                                 if ( (::GetTickCount() - m_lastudpsearchtime) > UDPSERVERREASKTIME) {
 421                                         SendNextUDPPacket();
 422                                 }
 423                         }
 424                 }
 425
 426                 if ( (::GetTickCount() - m_lastsorttime) > 10000 ) {
 427
 428
 429                         DoSortByPriority();
 430                 }
 431                 // Check if any paused files can be resumed
 432
 433                 CheckDiskspace(thePrefs::GetTempDir());
 434         }
 435
 436
 437         // Check for new links once per second.
 438         if ((::GetTickCount() - m_nLastED2KLinkCheck) >= 1000) {
 439                 AddLinksFromFile();
 440                 m_nLastED2KLinkCheck = ::GetTickCount();
 441         }
 442 }
 443
 444
 445 CPartFile* CDownloadQueue::GetFileByID(const CMD4Hash& filehash) const
 446 {
 447         wxMutexLocker lock( m_mutex );
 448
 449         for ( uint16 i = 0; i < m_filelist.size(); ++i ) {
 450                 if ( filehash == m_filelist[i]->GetFileHash()) {
 451                         return m_filelist[ i ];
 452                 }
 453         }
 454
 455         return NULL;
 456 }
 457
 458
 459 CPartFile* CDownloadQueue::GetFileByIndex(unsigned int index)  const
 460 {
 461         wxMutexLocker lock( m_mutex );
 462
 463         if ( index < m_filelist.size() ) {
 464                 return m_filelist[ index ];
 465         }
 466
 467         wxASSERT( false );
 468         return NULL;
 469 }
 470
 471
 472 bool CDownloadQueue::IsPartFile(const CKnownFile* file) const
 473 {
 474         wxMutexLocker lock(m_mutex);
 475
 476         for (uint16 i = 0; i < m_filelist.size(); ++i) {
 477                 if (file == m_filelist[i]) {
 478                         return true;
 479                 }
 480         }
 481
 482         return false;
 483 }
 484
 485
 486 void CDownloadQueue::OnConnectionState(bool bConnected)
 487 {
 488         wxMutexLocker lock(m_mutex);
 489
 490         for (uint16 i = 0; i < m_filelist.size(); ++i) {
 491                 if (    m_filelist[i]->GetStatus() == PS_READY ||
 492                         m_filelist[i]->GetStatus() == PS_EMPTY) {
 493                         m_filelist[i]->SetActive(bConnected);
 494                 }
 495         }
 496 }
 497
 498
 499 void CDownloadQueue::CheckAndAddSource(CPartFile* sender, CUpDownClient* source)
 500 {
 501         // if we block loopbacks at this point it should prevent us from connecting to ourself
 502         if ( source->HasValidHash() ) {
 503                 if ( source->GetUserHash() == thePrefs::GetUserHash() ) {
 504                         AddDebugLogLineM( false, logDownloadQueue, wxT("Tried to add source with matching hash to your own.") );
 505                         source->Safe_Delete();
 506                         return;
 507                 }
 508         }
 509
 510         if (sender->IsStopped()) {
 511                 source->Safe_Delete();
 512                 return;
 513         }
 514
 515         // Filter sources which are known to be dead/useless
 516         if ( theApp->clientlist->IsDeadSource( source ) || sender->IsDeadSource(source) ) {
 517                 source->Safe_Delete();
 518                 return;
 519         }
 520
 521         // Filter sources which are incompatible with our encryption setting (one requires it, and the other one doesn't supports it)
 522         if ( (source->RequiresCryptLayer() && (!thePrefs::IsClientCryptLayerSupported() || !source->HasValidHash())) || (thePrefs::IsClientCryptLayerRequired() && (!source->SupportsCryptLayer() || !source->HasValidHash()))) {
 523                 source->Safe_Delete();
 524                 return;
 525         }
 526
 527         // Find all clients with the same hash
 528         if ( source->HasValidHash() ) {
 529                 CClientList::SourceList found = theApp->clientlist->GetClientsByHash( source->GetUserHash() );
 530
 531                 CClientList::SourceList::iterator it = found.begin();
 532                 for ( ; it != found.end(); it++ ) {
 533                         CKnownFile* file = (*it)->GetRequestFile();
 534
 535                         // Only check files on the download-queue
 536                         if ( file ) {
 537                                 // Is the found source queued for something else?
 538                                 if (  file != sender ) {
 539                                         // Try to add a request for the other file
 540                                         if ( (*it)->AddRequestForAnotherFile(sender)) {
 541                                                 // Add it to downloadlistctrl
 542                                                 Notify_DownloadCtrlAddSource(sender, *it, A4AF_SOURCE);
 543                                         }
 544                                 }
 545
 546                                 source->Safe_Delete();
 547                                 return;
 548                         }
 549                 }
 550         }
 551
 552
 553
 554         // Our new source is real new but maybe it is already uploading to us?
 555         // If yes the known client will be attached to the var "source" and the old
 556         // source-client will be deleted. However, if the request file of the known
 557         // source is NULL, then we have to treat it almost like a new source and if
 558         // it isn't NULL and not "sender", then we shouldn't move it, but rather add
 559         // a request for the new file.
 560         ESourceFrom nSourceFrom = source->GetSourceFrom();
 561         if ( theApp->clientlist->AttachToAlreadyKnown(&source, 0) ) {
 562                 // Already queued for another file?
 563                 if ( source->GetRequestFile() ) {
 564                         // If we're already queued for the right file, then there's nothing to do
 565                         if ( sender != source->GetRequestFile() ) {
 566                                 // Add the new file to the request list
 567                                 source->AddRequestForAnotherFile( sender );
 568                         }
 569                 } else {
 570                         // Source was known, but reqfile NULL.
 571                         source->SetRequestFile( sender );
 572                         if (source->GetSourceFrom() != nSourceFrom) {
 573                                 if (source->GetSourceFrom() != SF_NONE) {
 574                                         theStats::RemoveSourceOrigin(source->GetSourceFrom());
 575                                         theStats::RemoveFoundSource();
 576                                 }
 577                                 source->SetSourceFrom(nSourceFrom);
 578                         }
 579                         sender->AddSource( source );
 580                         if ( source->GetFileRating() || !source->GetFileComment().IsEmpty() ) {
 581                                 sender->UpdateFileRatingCommentAvail();
 582                         }
 583
 584                         Notify_DownloadCtrlAddSource(sender, source, UNAVAILABLE_SOURCE);
 585                 }
 586         } else {
 587                 // Unknown client, add it to the clients list
 588                 source->SetRequestFile( sender );
 589
 590                 theApp->clientlist->AddClient(source);
 591
 592                 sender->AddSource( source );
 593                 if ( source->GetFileRating() || !source->GetFileComment().IsEmpty() ) {
 594                         sender->UpdateFileRatingCommentAvail();
 595                 }
 596
 597                 Notify_DownloadCtrlAddSource(sender, source, UNAVAILABLE_SOURCE);
 598         }
 599 }
 600
 601
 602 void CDownloadQueue::CheckAndAddKnownSource(CPartFile* sender,CUpDownClient* source)
 603 {
 604         // Kad reviewed
 605
 606         if (sender->IsStopped()) {
 607                 return;
 608         }
 609
 610         // Filter sources which are known to be dead/useless
 611         if ( sender->IsDeadSource(source) ) {
 612                 return;
 613         }
 614
 615         // "Filter LAN IPs" -- this may be needed here in case we are connected to the internet and are also connected
 616         // to a LAN and some client from within the LAN connected to us. Though this situation may be supported in future
 617         // by adding that client to the source list and filtering that client's LAN IP when sending sources to
 618         // a client within the internet.
 619         //
 620         // "IPfilter" is not needed here, because that "known" client was already IPfiltered when receiving OP_HELLO.
 621         if (!source->HasLowID()) {
 622                 uint32 nClientIP = wxUINT32_SWAP_ALWAYS(source->GetUserIDHybrid());
 623                 if (!IsGoodIP(nClientIP, thePrefs::FilterLanIPs())) { // check for 0-IP, localhost and LAN addresses
 624                         AddDebugLogLineM(false, logIPFilter, wxT("Ignored already known source with IP=%s") + Uint32toStringIP(nClientIP));
 625                         return;
 626                 }
 627         }
 628
 629         // Filter sources which are incompatible with our encryption setting (one requires it, and the other one doesn't supports it)
 630         if ( (source->RequiresCryptLayer() && (!thePrefs::IsClientCryptLayerSupported() || !source->HasValidHash())) || (thePrefs::IsClientCryptLayerRequired() && (!source->SupportsCryptLayer() || !source->HasValidHash())))
 631         {
 632                 source->Safe_Delete();
 633                 return;
 634         }
 635
 636         CPartFile* file = source->GetRequestFile();
 637
 638         // Check if the file is already queued for something else
 639         if ( file ) {
 640                 if ( file != sender ) {
 641                         if ( source->AddRequestForAnotherFile( sender ) ) {
 642                                 Notify_DownloadCtrlAddSource( sender, source, A4AF_SOURCE );
 643                         }
 644                 }
 645         } else {
 646                 source->SetRequestFile( sender );
 647
 648                 if ( source->GetFileRating() || !source->GetFileComment().IsEmpty() ) {
 649                         sender->UpdateFileRatingCommentAvail();
 650                 }
 651
 652                 source->SetSourceFrom(SF_PASSIVE);
 653                 sender->AddSource( source );
 654                 Notify_DownloadCtrlAddSource( sender, source, UNAVAILABLE_SOURCE);
 655         }
 656 }
 657
 658
 659 bool CDownloadQueue::RemoveSource(CUpDownClient* toremove, bool WXUNUSED(updatewindow), bool bDoStatsUpdate)
 660 {
 661         bool removed = false;
 662         toremove->DeleteAllFileRequests();
 663
 664         for ( uint16 i = 0; i < GetFileCount(); i++ ) {
 665                 CPartFile* cur_file = GetFileByIndex( i );
 666
 667                 // Remove from source-list
 668                 if ( cur_file->DelSource( toremove ) ) {
 669                         cur_file->RemoveDownloadingSource(toremove);
 670                         removed = true;
 671                         if ( bDoStatsUpdate ) {
 672                                 cur_file->UpdatePartsInfo();
 673                         }
 674                 }
 675
 676                 // Remove from A4AF-list
 677                 cur_file->RemoveA4AFSource( toremove );
 678         }
 679
 680
 681         if ( !toremove->GetFileComment().IsEmpty() || toremove->GetFileRating()>0) {
 682                 toremove->GetRequestFile()->UpdateFileRatingCommentAvail();
 683         }
 684
 685         toremove->SetRequestFile( NULL );
 686         toremove->SetDownloadState(DS_NONE);
 687
 688         // Remove from downloadlist widget
 689         Notify_DownloadCtrlRemoveSource(toremove, (CPartFile*)NULL);
 690         toremove->ResetFileStatusInfo();
 691
 692         return removed;
 693 }
 694
 695
 696 void CDownloadQueue::RemoveFile(CPartFile* file)
 697 {
 698         RemoveLocalServerRequest( file );
 699
 700         NotifyObservers( EventType( EventType::REMOVED, file ) );
 701
 702         wxMutexLocker lock( m_mutex );
 703
 704         EraseValue( m_filelist, file );
 705 }
 706
 707
 708 CUpDownClient* CDownloadQueue::GetDownloadClientByIP_UDP(uint32 dwIP, uint16 nUDPPort) const
 709 {
 710         wxMutexLocker lock( m_mutex );
 711
 712         for ( unsigned int i = 0; i < m_filelist.size(); i++ ) {
 713                 const CPartFile::SourceSet& set = m_filelist[i]->GetSourceList();
 714
 715                 for ( CPartFile::SourceSet::const_iterator it = set.begin(); it != set.end(); it++ ) {
 716                         if ( (*it)->GetIP() == dwIP && (*it)->GetUDPPort() == nUDPPort ) {
 717                                 return *it;
 718                         }
 719                 }
 720         }
 721         return NULL;
 722 }
 723
 724
 725 /**
 726  * Checks if the specified server is the one we are connected to.
 727  */
 728 bool IsConnectedServer(const CServer* server)
 729 {
 730         if (server && theApp->serverconnect->GetCurrentServer()) {
 731                 wxString srvAddr = theApp->serverconnect->GetCurrentServer()->GetAddress();
 732                 uint16 srvPort = theApp->serverconnect->GetCurrentServer()->GetPort();
 733
 734                 return server->GetAddress() == srvAddr && server->GetPort() == srvPort;
 735         }
 736
 737         return false;
 738 }
 739
 740
 741 bool CDownloadQueue::SendNextUDPPacket()
 742 {
 743         if ( m_filelist.empty() || !theApp->serverconnect->IsUDPSocketAvailable() || !theApp->IsConnectedED2K()) {
 744                 return false;
 745         }
 746
 747         // Start monitoring the server and the files list
 748         if ( !m_queueServers.IsActive() ) {
 749                 AddObserver( &m_queueFiles );
 750
 751                 theApp->serverlist->AddObserver( &m_queueServers );
 752         }
 753
 754
 755         bool packetSent = false;
 756         while ( !packetSent ) {
 757                 // Get max files ids per packet for current server
 758                 int filesAllowed = GetMaxFilesPerUDPServerPacket();
 759
 760                 if (filesAllowed < 1 || !m_udpserver || IsConnectedServer(m_udpserver)) {
 761                         // Select the next server to ask, must not be the connected server
 762                         do {
 763                                 m_udpserver = m_queueServers.GetNext();
 764                         } while (IsConnectedServer(m_udpserver));
 765
 766                         m_cRequestsSentToServer = 0;
 767                         filesAllowed = GetMaxFilesPerUDPServerPacket();
 768                 }
 769
 770
 771                 // Check if we have asked all servers, in which case we are done
 772                 if (m_udpserver == NULL) {
 773                         DoStopUDPRequests();
 774
 775                         return false;
 776                 }
 777
 778                 // Memoryfile containing the hash of every file to request
 779                 // 28bytes allocation because 16b + 4b + 8b is the worse case scenario.
 780                 CMemFile hashlist( 28 );
 781
 782                 CPartFile* file = m_queueFiles.GetNext();
 783
 784                 while ( file && filesAllowed ) {
 785                         uint8 status = file->GetStatus();
 786
 787                         if ( ( status == PS_READY || status == PS_EMPTY ) && file->GetSourceCount() < thePrefs::GetMaxSourcePerFileUDP() ) {
 788                                 if (file->IsLargeFile() && !m_udpserver->SupportsLargeFilesUDP()) {
 789                                         AddDebugLogLineM(false, logDownloadQueue, wxT("UDP Request for sources on a large file ignored: server doesn't support it"));
 790                                 } else {
 791                                         ++m_cRequestsSentToServer;
 792                                         hashlist.WriteHash( file->GetFileHash() );
 793                                         // See the notes on TCP packet
 794                                         if ( m_udpserver->GetUDPFlags() & SRV_UDPFLG_EXT_GETSOURCES2 ) {
 795                                                 if (file->IsLargeFile()) {
 796                                                         wxASSERT(m_udpserver->SupportsLargeFilesUDP());
 797                                                         hashlist.WriteUInt32( 0 );
 798                                                         hashlist.WriteUInt64( file->GetFileSize() );
 799                                                 } else {
 800                                                         hashlist.WriteUInt32( file->GetFileSize() );
 801                                                 }
 802                                         }
 803                                         --filesAllowed;
 804                                 }
 805                         }
 806
 807                         // Avoid skipping a file if we can't send any more currently
 808                         if ( filesAllowed ) {
 809                                 file = m_queueFiles.GetNext();
 810                         }
 811                 }
 812
 813                 // See if we have anything to send
 814                 if ( hashlist.GetLength() ) {
 815                         packetSent = SendGlobGetSourcesUDPPacket(hashlist);
 816                 }
 817
 818                 // Check if we've covered every file
 819                 if ( file == NULL ) {
 820                         // Reset the list of asked files so that the loop will start over
 821                         m_queueFiles.Reset();
 822
 823                         // Unset the server so that the next server will be used
 824                         m_udpserver = NULL;
 825                 }
 826         }
 827
 828         return true;
 829 }
 830
 831
 832 void CDownloadQueue::StopUDPRequests()
 833 {
 834         wxMutexLocker lock( m_mutex );
 835
 836         DoStopUDPRequests();
 837 }
 838
 839
 840 void CDownloadQueue::DoStopUDPRequests()
 841 {
 842         // No need to observe when we wont be using the results
 843         theApp->serverlist->RemoveObserver( &m_queueServers );
 844         RemoveObserver( &m_queueFiles );
 845
 846         m_udpserver = 0;
 847         m_lastudpsearchtime = ::GetTickCount();
 848 }
 849
 850
 851 // Comparison function needed by sort. Returns true if file1 preceeds file2
 852 bool ComparePartFiles(const CPartFile* file1, const CPartFile* file2) {
 853         if (file1->GetDownPriority() != file2->GetDownPriority()) {
 854                 // To place high-priority files before low priority files we have to
 855                 // invert this test, since PR_LOW is lower than PR_HIGH, and since
 856                 // placing a PR_LOW file before a PR_HIGH file would mean that
 857                 // the PR_LOW file gets sources before the PR_HIGH file ...
 858                 return (file1->GetDownPriority() > file2->GetDownPriority());
 859         } else {
 860                 int sourcesA = file1->GetSourceCount();
 861                 int sourcesB = file2->GetSourceCount();
 862
 863                 int notSourcesA = file1->GetNotCurrentSourcesCount();
 864                 int notSourcesB = file2->GetNotCurrentSourcesCount();
 865
 866                 int cmp = CmpAny( sourcesA - notSourcesA, sourcesB - notSourcesB );
 867
 868                 if ( cmp == 0 ) {
 869                         cmp = CmpAny( notSourcesA, notSourcesB );
 870                 }
 871
 872                 return cmp < 0;
 873         }
 874 }
 875
 876
 877 void CDownloadQueue::DoSortByPriority()
 878 {
 879         m_lastsorttime = ::GetTickCount();
 880         sort( m_filelist.begin(), m_filelist.end(), ComparePartFiles );
 881 }
 882
 883
 884 void CDownloadQueue::ResetLocalServerRequests()
 885 {
 886         wxMutexLocker lock( m_mutex );
 887
 888         m_dwNextTCPSrcReq = 0;
 889         m_localServerReqQueue.clear();
 890
 891         for ( uint16 i = 0; i < m_filelist.size(); i++ ) {
 892                 m_filelist[i]->SetLocalSrcRequestQueued(false);
 893         }
 894 }
 895
 896
 897 void CDownloadQueue::RemoveLocalServerRequest( CPartFile* file )
 898 {
 899         wxMutexLocker lock( m_mutex );
 900
 901         EraseValue( m_localServerReqQueue, file );
 902
 903         file->SetLocalSrcRequestQueued(false);
 904 }
 905
 906
 907 void CDownloadQueue::ProcessLocalRequests()
 908 {
 909         wxMutexLocker lock( m_mutex );
 910
 911         bool bServerSupportsLargeFiles = theApp->serverconnect
 912                                                                         && theApp->serverconnect->GetCurrentServer()
 913                                                                         && theApp->serverconnect->GetCurrentServer()->SupportsLargeFilesTCP();
 914
 915         if ( (!m_localServerReqQueue.empty()) && (m_dwNextTCPSrcReq < ::GetTickCount()) ) {
 916                 CMemFile dataTcpFrame(22);
 917                 const int iMaxFilesPerTcpFrame = 15;
 918                 int iFiles = 0;
 919                 while (!m_localServerReqQueue.empty() && iFiles < iMaxFilesPerTcpFrame) {
 920                         // find the file with the longest waitingtime
 921                         uint32 dwBestWaitTime = 0xFFFFFFFF;
 922
 923                         std::list<CPartFile*>::iterator posNextRequest = m_localServerReqQueue.end();
 924                         std::list<CPartFile*>::iterator it = m_localServerReqQueue.begin();
 925                         while( it != m_localServerReqQueue.end() ) {
 926                                 CPartFile* cur_file = (*it);
 927                                 if (cur_file->GetStatus() == PS_READY || cur_file->GetStatus() == PS_EMPTY) {
 928                                         uint8 nPriority = cur_file->GetDownPriority();
 929                                         if (nPriority > PR_HIGH) {
 930                                                 wxASSERT(0);
 931                                                 nPriority = PR_HIGH;
 932                                         }
 933
 934                                         if (cur_file->GetLastSearchTime() + (PR_HIGH-nPriority) < dwBestWaitTime ){
 935                                                 dwBestWaitTime = cur_file->GetLastSearchTime() + (PR_HIGH - nPriority);
 936                                                 posNextRequest = it;
 937                                         }
 938
 939                                         it++;
 940                                 } else {
 941                                         it = m_localServerReqQueue.erase(it);
 942                                         cur_file->SetLocalSrcRequestQueued(false);
 943                                         AddDebugLogLineM( false, logDownloadQueue,
 944                                                 CFormat(wxT("Local server source request for file '%s' not sent because of status '%s'"))
 945                                                         % cur_file->GetFileName() % cur_file->getPartfileStatus());
 946                                 }
 947                         }
 948
 949                         if (posNextRequest != m_localServerReqQueue.end()) {
 950                                 CPartFile* cur_file = (*posNextRequest);
 951                                 cur_file->SetLocalSrcRequestQueued(false);
 952                                 cur_file->SetLastSearchTime(::GetTickCount());
 953                                 m_localServerReqQueue.erase(posNextRequest);
 954                                 iFiles++;
 955
 956                                 if (!bServerSupportsLargeFiles && cur_file->IsLargeFile()) {
 957                                         AddDebugLogLineM(false, logDownloadQueue, wxT("TCP Request for sources on a large file ignored: server doesn't support it"));
 958                                 } else {
 959                                         AddDebugLogLineM(false, logDownloadQueue,
 960                                                 CFormat(wxT("Creating local sources request packet for '%s'")) % cur_file->GetFileName());
 961                                         // create request packet
 962                                         CMemFile data(16 + (cur_file->IsLargeFile() ? 8 : 4));
 963                                         data.WriteHash(cur_file->GetFileHash());
 964                                         // Kry - lugdunum extended protocol on 17.3 to handle filesize properly.
 965                                         // There is no need to check anything, old server ignore the extra 4 bytes.
 966                                         // As of 17.9, servers accept a 0 32-bits size and then a 64bits size
 967                                         if (cur_file->IsLargeFile()) {
 968                                                 wxASSERT(bServerSupportsLargeFiles);
 969                                                 data.WriteUInt32(0);
 970                                                 data.WriteUInt64(cur_file->GetFileSize());
 971                                         } else {
 972                                                 data.WriteUInt32(cur_file->GetFileSize());
 973                                         }
 974                                         uint8 byOpcode = 0;
 975                                         if (thePrefs::IsClientCryptLayerSupported() && theApp->serverconnect->GetCurrentServer() != NULL && theApp->serverconnect->GetCurrentServer()->SupportsGetSourcesObfuscation()) {
 976                                                 byOpcode = OP_GETSOURCES_OBFU;
 977                                         } else {
 978                                                 byOpcode = OP_GETSOURCES;
 979                                         }
 980                                         CPacket packet(data, OP_EDONKEYPROT, byOpcode);
 981                                         dataTcpFrame.Write(packet.GetPacket(), packet.GetRealPacketSize());
 982                                 }
 983                         }
 984                 }
 985
 986                 int iSize = dataTcpFrame.GetLength();
 987                 if (iSize > 0) {
 988                         // create one 'packet' which contains all buffered OP_GETSOURCES ED2K packets to be sent with one TCP frame
 989                         // server credits: (16+4)*regularfiles + (16+4+8)*largefiles +1
 990                         CScopedPtr<CPacket> packet(new CPacket(new byte[iSize], dataTcpFrame.GetLength(), true, false));
 991                         dataTcpFrame.Seek(0, wxFromStart);
 992                         dataTcpFrame.Read(packet->GetPacket(), iSize);
 993                         uint32 size = packet->GetPacketSize();
 994                         theApp->serverconnect->SendPacket(packet.release(), true);      // Deletes `packet'.
 995                         AddDebugLogLineM(false, logDownloadQueue, wxT("Sent local sources request packet."));
 996                         theStats::AddUpOverheadServer(size);
 997                 }
 998
 999                 // next TCP frame with up to 15 source requests is allowed to be sent in..
1000                 m_dwNextTCPSrcReq = ::GetTickCount() + SEC2MS(iMaxFilesPerTcpFrame*(16+4));
1001         }
1002
1003 }
1004
1005
1006 void CDownloadQueue::SendLocalSrcRequest(CPartFile* sender)
1007 {
1008         wxMutexLocker lock( m_mutex );
1009
1010         m_localServerReqQueue.push_back(sender);
1011 }
1012
1013
1014 void CDownloadQueue::AddLinksFromFile()
1015 {
1016         const wxString fullPath = theApp->ConfigDir + wxT("ED2KLinks");
1017         if (!wxFile::Exists(fullPath)) {
1018                 return;
1019         }
1020
1021         // Attempt to lock the ED2KLinks file.
1022         CFileLock lock((const char*)unicode2char(fullPath));
1023
1024         wxTextFile file(fullPath);
1025         if ( file.Open() ) {
1026                 for ( unsigned int i = 0; i < file.GetLineCount(); i++ ) {
1027                         wxString line = file.GetLine( i ).Strip( wxString::both );
1028
1029                         if ( !line.IsEmpty() ) {
1030                                 // Special case! used by a secondary running mule to raise this one.
1031                                 if ( line == wxT("RAISE_DIALOG")  ) {
1032                                         Notify_ShowGUI();
1033                                         continue;
1034                                 }
1035
1036                                 AddLink( line );
1037                         }
1038                 }
1039
1040                 file.Close();
1041         } else {
1042                 AddLogLineNS(_("Failed to open ED2KLinks file."));
1043         }
1044
1045         // Delete the file.
1046         wxRemoveFile(theApp->ConfigDir +  wxT("ED2KLinks"));
1047 }
1048
1049
1050 void CDownloadQueue::ResetCatParts(uint8 cat)
1051 {
1052         for ( uint16 i = 0; i < GetFileCount(); i++ ) {
1053                 CPartFile* file = GetFileByIndex( i );
1054
1055                 if ( file->GetCategory() == cat ) {
1056                         // Reset the category
1057                         file->SetCategory( 0 );
1058                 } else if ( file->GetCategory() > cat ) {
1059                         // Set to the new position of the original category
1060                         file->SetCategory( file->GetCategory() - 1 );
1061                 }
1062         }
1063 }
1064
1065
1066 void CDownloadQueue::SetCatPrio(uint8 cat, uint8 newprio)
1067 {
1068         for ( uint16 i = 0; i < GetFileCount(); i++ ) {
1069                 CPartFile* file = GetFileByIndex( i );
1070
1071                 if ( !cat || file->GetCategory() == cat ) {
1072                         if ( newprio == PR_AUTO ) {
1073                                 file->SetAutoDownPriority(true);
1074                         } else {
1075                                 file->SetAutoDownPriority(false);
1076                                 file->SetDownPriority(newprio);
1077                         }
1078                 }
1079         }
1080 }
1081
1082
1083 void CDownloadQueue::SetCatStatus(uint8 cat, int newstatus)
1084 {
1085         std::list<CPartFile*> files;
1086
1087         {
1088                 wxMutexLocker lock(m_mutex);
1089
1090                 for ( uint16 i = 0; i < m_filelist.size(); i++ ) {
1091                         if ( m_filelist[i]->CheckShowItemInGivenCat(cat) ) {
1092                                 files.push_back( m_filelist[i] );
1093                         }
1094                 }
1095         }
1096
1097         std::list<CPartFile*>::iterator it = files.begin();
1098
1099         for ( ; it != files.end(); it++ ) {
1100                 switch ( newstatus ) {
1101                         case MP_CANCEL: (*it)->Delete();        break;
1102                         case MP_PAUSE:  (*it)->PauseFile();     break;
1103                         case MP_STOP:   (*it)->StopFile();      break;
1104                         case MP_RESUME: (*it)->ResumeFile();    break;
1105                 }
1106         }
1107 }
1108
1109
1110 uint16 CDownloadQueue::GetDownloadingFileCount() const
1111 {
1112         wxMutexLocker lock( m_mutex );
1113
1114         uint16 count = 0;
1115         for ( uint16 i = 0; i < m_filelist.size(); i++ ) {
1116                 uint8 status = m_filelist[i]->GetStatus();
1117                 if ( status == PS_READY || status == PS_EMPTY ) {
1118                         count++;
1119                 }
1120         }
1121
1122         return count;
1123 }
1124
1125
1126 uint16 CDownloadQueue::GetPausedFileCount() const
1127 {
1128         wxMutexLocker lock( m_mutex );
1129
1130         uint16 count = 0;
1131         for ( uint16 i = 0; i < m_filelist.size(); i++ ) {
1132                 if ( m_filelist[i]->GetStatus() == PS_PAUSED ) {
1133                         count++;
1134                 }
1135         }
1136
1137         return count;
1138 }
1139
1140
1141 void CDownloadQueue::CheckDiskspace( const CPath& path )
1142 {
1143         if ( ::GetTickCount() - m_lastDiskCheck < DISKSPACERECHECKTIME ) {
1144                 return;
1145         }
1146
1147         m_lastDiskCheck = ::GetTickCount();
1148
1149         uint64 min = 0;
1150         // Check if the user has set an explicit limit
1151         if ( thePrefs::IsCheckDiskspaceEnabled() ) {
1152                 min = thePrefs::GetMinFreeDiskSpace();
1153         }
1154
1155         // The very least acceptable diskspace is a single PART
1156         if ( min < PARTSIZE ) {
1157                 min = PARTSIZE;
1158         }
1159
1160         uint64 free = CPath::GetFreeSpaceAt(path);
1161         if (free == static_cast<uint64>(wxInvalidOffset)) {
1162                 return;
1163         } else if (free < min) {
1164                 CUserEvents::ProcessEvent(
1165                         CUserEvents::OutOfDiskSpace,
1166                         wxT("Temporary partition"));
1167         }
1168
1169         for (unsigned int i = 0; i < m_filelist.size(); ++i) {
1170                 CPartFile* file = m_filelist[i];
1171
1172                 switch ( file->GetStatus() ) {
1173                         case PS_ERROR:
1174                         case PS_COMPLETING:
1175                         case PS_COMPLETE:
1176                                 continue;
1177                 }
1178
1179                 if ( free >= min && file->GetInsufficient() ) {
1180                         // We'll try to resume files if there is enough free space
1181                         if ( free - file->GetNeededSpace() > min ) {
1182                                 file->ResumeFile();
1183                         }
1184                 } else if ( free < min && !file->IsPaused() ) {
1185                         // No space left, stop the files.
1186                         file->PauseFile( true );
1187                 }
1188         }
1189 }
1190
1191
1192 int CDownloadQueue::GetMaxFilesPerUDPServerPacket() const
1193 {
1194         if ( m_udpserver ) {
1195                 if ( m_udpserver->GetUDPFlags() & SRV_UDPFLG_EXT_GETSOURCES ) {
1196                         // get max. file ids per packet
1197                         if ( m_cRequestsSentToServer < MAX_REQUESTS_PER_SERVER ) {
1198                                 return std::min(
1199                                         MAX_FILES_PER_UDP_PACKET,
1200                                         MAX_REQUESTS_PER_SERVER - m_cRequestsSentToServer
1201                                 );
1202                         }
1203                 } else if ( m_cRequestsSentToServer < MAX_REQUESTS_PER_SERVER ) {
1204                         return 1;
1205                 }
1206         }
1207
1208         return 0;
1209 }
1210
1211
1212 bool CDownloadQueue::SendGlobGetSourcesUDPPacket(CMemFile& data)
1213 {
1214         if (!m_udpserver) {
1215                 return false;
1216         }
1217
1218         CPacket packet(data, OP_EDONKEYPROT, ((m_udpserver->GetUDPFlags() & SRV_UDPFLG_EXT_GETSOURCES2) ? OP_GLOBGETSOURCES2 : OP_GLOBGETSOURCES));
1219
1220         theStats::AddUpOverheadServer(packet.GetPacketSize());
1221         theApp->serverconnect->SendUDPPacket(&packet,m_udpserver,false);
1222
1223         return true;
1224 }
1225
1226
1227 void CDownloadQueue::AddToResolve(const CMD4Hash& fileid, const wxString& pszHostname, uint16 port, const wxString& hash, uint8 cryptoptions)
1228 {
1229         // double checking
1230         if ( !GetFileByID(fileid) ) {
1231                 return;
1232         }
1233
1234         wxMutexLocker lock( m_mutex );
1235
1236         Hostname_Entry entry = { fileid, pszHostname, port, hash, cryptoptions };
1237         m_toresolve.push_front(entry);
1238
1239         // Check if there are other DNS lookups on queue
1240         if (m_toresolve.size() == 1) {
1241                 // Check if it is a simple dot address
1242                 uint32 ip = StringIPtoUint32(pszHostname);
1243
1244                 if (ip) {
1245                         OnHostnameResolved(ip);
1246                 } else {
1247                         CAsyncDNS* dns = new CAsyncDNS(pszHostname, DNS_SOURCE, theApp);
1248
1249                         if ((dns->Create() != wxTHREAD_NO_ERROR) || (dns->Run() != wxTHREAD_NO_ERROR)) {
1250                                 dns->Delete();
1251                                 m_toresolve.pop_front();
1252                         }
1253                 }
1254         }
1255 }
1256
1257
1258 void CDownloadQueue::OnHostnameResolved(uint32 ip)
1259 {
1260         wxMutexLocker lock( m_mutex );
1261
1262         wxASSERT( m_toresolve.size() );
1263
1264         Hostname_Entry resolved = m_toresolve.front();
1265         m_toresolve.pop_front();
1266
1267         if ( ip ) {
1268                 CPartFile* file = GetFileByID( resolved.fileid );
1269                 if ( file ) {
1270                         CMemFile sources(1+4+2);
1271                         sources.WriteUInt8(1); // No. Sources
1272                         sources.WriteUInt32(ip);
1273                         sources.WriteUInt16(resolved.port);
1274                         sources.WriteUInt8(resolved.cryptoptions);
1275                         if (resolved.cryptoptions & 0x80) {
1276                                 wxASSERT(!resolved.hash.IsEmpty());
1277                                 CMD4Hash sourcehash;
1278                                 sourcehash.Decode(resolved.hash);
1279                                 sources.WriteHash(sourcehash);
1280                         }
1281                         sources.Seek(0,wxFromStart);
1282
1283                         file->AddSources(sources, 0, 0, SF_LINK, true);
1284                 }
1285         }
1286
1287         while (m_toresolve.size()) {
1288                 Hostname_Entry entry = m_toresolve.front();
1289
1290                 // Check if it is a simple dot address
1291                 uint32 tmpIP = StringIPtoUint32(entry.strHostname);
1292
1293                 if (tmpIP) {
1294                         OnHostnameResolved(tmpIP);
1295                 } else {
1296                         CAsyncDNS* dns = new CAsyncDNS(entry.strHostname, DNS_SOURCE, theApp);
1297
1298                         if ((dns->Create() != wxTHREAD_NO_ERROR) || (dns->Run() != wxTHREAD_NO_ERROR)) {
1299                                 dns->Delete();
1300                                 m_toresolve.pop_front();
1301                         } else {
1302                                 break;
1303                         }
1304                 }
1305         }
1306 }
1307
1308
1309 bool CDownloadQueue::AddLink( const wxString& link, int category )
1310 {
1311         wxString uri(link);
1312
1313         if (link.compare(0, 7, wxT("magnet:")) == 0) {
1314                 uri = CMagnetED2KConverter(link);
1315                 if (uri.empty()) {
1316                         AddLogLineM(true, CFormat(_("Cannot convert magnet link to eD2k: %s")) % link);
1317                         return false;
1318                 }
1319         }
1320
1321         if (uri.compare(0, 7, wxT("ed2k://")) == 0) {
1322                 return AddED2KLink(uri, category);
1323         } else {
1324                 AddLogLineM(true, CFormat(_("Unknown protocol of link: %s")) % link);
1325                 return false;
1326         }
1327 }
1328
1329
1330 bool CDownloadQueue::AddED2KLink( const wxString& link, int category )
1331 {
1332         wxASSERT( !link.IsEmpty() );
1333         wxString URI = link;
1334
1335         // Need the links to end with /, otherwise CreateLinkFromUrl crashes us.
1336         if ( URI.Last() != wxT('/') ) {
1337                 URI += wxT("/");
1338         }
1339
1340         try {
1341                 CScopedPtr<CED2KLink> uri(CED2KLink::CreateLinkFromUrl(URI));
1342
1343                 return AddED2KLink( uri.get(), category );
1344         } catch ( const wxString& err ) {
1345                 AddLogLineM( true, CFormat( _("Invalid eD2k link! ERROR: %s")) % err);
1346         }
1347
1348         return false;
1349 }
1350
1351
1352 bool CDownloadQueue::AddED2KLink( const CED2KLink* link, int category )
1353 {
1354         switch ( link->GetKind() ) {
1355                 case CED2KLink::kFile:
1356                         return AddED2KLink( dynamic_cast<const CED2KFileLink*>( link ), category );
1357
1358                 case CED2KLink::kServer:
1359                         return AddED2KLink( dynamic_cast<const CED2KServerLink*>( link ) );
1360
1361                 case CED2KLink::kServerList:
1362                         return AddED2KLink( dynamic_cast<const CED2KServerListLink*>( link ) );
1363
1364                 default:
1365                         return false;
1366         }
1367 }
1368
1369
1370
1371 bool CDownloadQueue::AddED2KLink( const CED2KFileLink* link, int category )
1372 {
1373         CPartFile* file = NULL;
1374         if (IsFileExisting(link->GetHashKey())) {
1375                 // Must be a shared file if we are to add hashes or sources
1376                 if ((file = GetFileByID(link->GetHashKey())) == NULL) {
1377                         return false;
1378                 }
1379         } else {
1380                 if (link->GetSize() > OLD_MAX_FILE_SIZE) {
1381                         if (!PlatformSpecific::CanFSHandleLargeFiles(thePrefs::GetTempDir())) {
1382                                 AddLogLineM(true, _("Filesystem for Temp directory cannot handle large files."));
1383                                 return false;
1384                         } else if (!PlatformSpecific::CanFSHandleLargeFiles(theApp->glob_prefs->GetCatPath(category))) {
1385                                 AddLogLineM(true, _("Filesystem for Incoming directory cannot handle large files."));
1386                                 return false;
1387                         }
1388                 }
1389
1390                 file = new CPartFile(link);
1391
1392                 if (file->GetStatus() == PS_ERROR) {
1393                         delete file;
1394                         return false;
1395                 }
1396
1397                 AddDownload(file, thePrefs::AddNewFilesPaused(), category);
1398         }
1399
1400         if (link->HasValidAICHHash()) {
1401                 CAICHHashSet* hashset = file->GetAICHHashset();
1402
1403                 if (!hashset->HasValidMasterHash() || (hashset->GetMasterHash() != link->GetAICHHash())) {
1404                         hashset->SetMasterHash(link->GetAICHHash(), AICH_VERIFIED);
1405                         hashset->FreeHashSet();
1406                 }
1407         }
1408
1409         const CED2KFileLink::CED2KLinkSourceList& list = link->m_sources;
1410         CED2KFileLink::CED2KLinkSourceList::const_iterator it = list.begin();
1411         for (; it != list.end(); ++it) {
1412                 AddToResolve(link->GetHashKey(), it->addr, it->port, it->hash, it->cryptoptions);
1413         }
1414
1415         return true;
1416 }
1417
1418
1419 bool CDownloadQueue::AddED2KLink( const CED2KServerLink* link )
1420 {
1421         CServer *server = new CServer( link->GetPort(), Uint32toStringIP( link->GetIP() ) );
1422
1423         server->SetListName( Uint32toStringIP( link->GetIP() ) );
1424
1425         theApp->serverlist->AddServer(server);
1426
1427         Notify_ServerAdd(server);
1428
1429         return true;
1430 }
1431
1432
1433 bool CDownloadQueue::AddED2KLink( const CED2KServerListLink* link )
1434 {
1435         theApp->serverlist->UpdateServerMetFromURL( link->GetAddress() );
1436
1437         return true;
1438 }
1439
1440
1441 void CDownloadQueue::ObserverAdded( ObserverType* o )
1442 {
1443         CObservableQueue<CPartFile*>::ObserverAdded( o );
1444
1445         EventType::ValueList list;
1446
1447         {
1448                 wxMutexLocker lock(m_mutex);
1449                 list.reserve( m_filelist.size() );
1450                 list.insert( list.begin(), m_filelist.begin(), m_filelist.end() );
1451         }
1452
1453         NotifyObservers( EventType( EventType::INITIAL, &list ), o );
1454 }
1455
1456 void CDownloadQueue::KademliaSearchFile(uint32_t searchID, const Kademlia::CUInt128* pcontactID, const Kademlia::CUInt128* pbuddyID, uint8_t type, uint32_t ip, uint16_t tcp, uint16_t udp, uint32_t buddyip, uint16_t buddyport, uint8_t byCryptOptions)
1457 {
1458         AddDebugLogLineM(false, logKadSearch, wxString::Format(wxT("Search result sources (type %i)"),type));
1459
1460         //Safety measure to make sure we are looking for these sources
1461         CPartFile* temp = GetFileByKadFileSearchID(searchID);
1462         if( !temp ) {
1463                 AddDebugLogLineM(false, logKadSearch, wxT("This is not the file we're looking for..."));
1464                 return;
1465         }
1466
1467         //Do we need more sources?
1468         if(!(!temp->IsStopped() && thePrefs::GetMaxSourcePerFile() > temp->GetSourceCount())) {
1469                 AddDebugLogLineM(false, logKadSearch, wxT("No more sources needed for this file"));
1470                 return;
1471         }
1472
1473         uint32_t ED2KID = wxUINT32_SWAP_ALWAYS(ip);
1474
1475         if (theApp->ipfilter->IsFiltered(ED2KID)) {
1476                 AddDebugLogLineM(false, logKadSearch, wxT("Source ip got filtered"));
1477                 AddDebugLogLineM(false, logIPFilter, CFormat(wxT("IPfiltered source IP=%s received from Kademlia")) % Uint32toStringIP(ED2KID));
1478                 return;
1479         }
1480
1481         if( (ip == Kademlia::CKademlia::GetIPAddress() || ED2KID == theApp->GetED2KID()) && tcp == thePrefs::GetPort()) {
1482                 AddDebugLogLineM(false, logKadSearch, wxT("Trying to add myself as source, ignore"));
1483                 return;
1484         }
1485
1486         CUpDownClient* ctemp = NULL;
1487         switch (type) {
1488                 case 4:
1489                 case 1: {
1490                         // NonFirewalled users
1491                         if(!tcp) {
1492                                 AddDebugLogLineM(false, logKadSearch, CFormat(wxT("Ignored source (IP=%s) received from Kademlia, no tcp port received")) % Uint32toStringIP(ip));
1493                                 return;
1494                         }
1495                         if (!IsGoodIP(ED2KID,thePrefs::FilterLanIPs())) {
1496                                 AddDebugLogLineM(false, logKadSearch, CFormat(wxT("%s got filtered")) % Uint32toStringIP(ED2KID));
1497                                 AddDebugLogLineM(false, logIPFilter, CFormat(wxT("Ignored source (IP=%s) received from Kademlia, filtered")) % Uint32toStringIP(ED2KID));
1498                                 return;
1499                         }
1500                         ctemp = new CUpDownClient(tcp, ip, 0, 0, temp, false, true);
1501                         ctemp->SetSourceFrom(SF_KADEMLIA);
1502                         // not actually sent or needed for HighID sources
1503                         //ctemp->SetServerIP(serverip);
1504                         //ctemp->SetServerPort(serverport);
1505                         ctemp->SetKadPort(udp);
1506                         byte cID[16];
1507                         pcontactID->ToByteArray(cID);
1508                         ctemp->SetUserHash(CMD4Hash(cID));
1509                         break;
1510                 }
1511                 case 2: {
1512                         // Don't use this type... Some clients will process it wrong..
1513                         break;
1514                 }
1515                 case 5:
1516                 case 3: {
1517                         // This will be a firewalled client connected to Kad only.
1518                         // We set the clientID to 1 as a Kad user only has 1 buddy.
1519                         ctemp = new CUpDownClient(tcp, 1, 0, 0, temp, false, true);
1520                         // The only reason we set the real IP is for when we get a callback
1521                         // from this firewalled source, the compare method will match them.
1522                         ctemp->SetSourceFrom(SF_KADEMLIA);
1523                         ctemp->SetKadPort(udp);
1524                         byte cID[16];
1525                         pcontactID->ToByteArray(cID);
1526                         ctemp->SetUserHash(CMD4Hash(cID));
1527                         pbuddyID->ToByteArray(cID);
1528                         ctemp->SetBuddyID(cID);
1529                         ctemp->SetBuddyIP(buddyip);
1530                         ctemp->SetBuddyPort(buddyport);
1531                         break;
1532                 }
1533                 case 6: {
1534                         // firewalled source which supports direct UDP callback
1535                         // if we are firewalled ourself, the source is useless to us
1536                         if (theApp->IsFirewalled()) {
1537                                 break;
1538                         }
1539
1540                         if ((byCryptOptions & 0x08) == 0){
1541                                 AddDebugLogLineM(false, logKadSearch, CFormat(wxT("Received Kad source type 6 (direct callback) which has the direct callback flag not set (%s)")) % Uint32toStringIP(ED2KID));
1542                                 break;
1543                         }
1544
1545                         ctemp = new CUpDownClient(tcp, 1, 0, 0, temp, false, true);
1546                         ctemp->SetSourceFrom(SF_KADEMLIA);
1547                         ctemp->SetKadPort(udp);
1548                         ctemp->SetIP(ED2KID); // need to set the IP address, which cannot be used for TCP but for UDP
1549                         byte cID[16];
1550                         pcontactID->ToByteArray(cID);
1551                         ctemp->SetUserHash(CMD4Hash(cID));
1552                 }
1553         }
1554
1555         if (ctemp) {
1556                 // add encryption settings
1557                 ctemp->SetConnectOptions(byCryptOptions);
1558
1559                 AddDebugLogLineM(false, logKadSearch, CFormat(wxT("Happily adding a source (%s) type %d")) % Uint32_16toStringIP_Port(ED2KID, ctemp->GetUserPort()) % type);
1560                 CheckAndAddSource(temp, ctemp);
1561         }
1562 }
1563
1564 CPartFile* CDownloadQueue::GetFileByKadFileSearchID(uint32 id) const
1565 {
1566         wxMutexLocker lock( m_mutex );
1567
1568         for ( uint16 i = 0; i < m_filelist.size(); ++i ) {
1569                 if ( id == m_filelist[i]->GetKadFileSearchID()) {
1570                         return m_filelist[ i ];
1571                 }
1572         }
1573
1574         return NULL;
1575 }
1576
1577 bool CDownloadQueue::DoKademliaFileRequest()
1578 {
1579         return ((::GetTickCount() - lastkademliafilerequest) > KADEMLIAASKTIME);
1580 }
1581 // File_checked_for_headers