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