src/SearchList.h

   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 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 #ifndef SEARCHLIST_H
  27 #define SEARCHLIST_H
  28
  29 #include "Timer.h"                              // Needed for CTimer
  30 #include "ObservableQueue.h"    // Needed for CQueueObserver
  31 #include "SearchFile.h"                 // Needed for CSearchFile
  32 #include <memory>               // Do_not_auto_remove (lionel's Mac, 10.3)
  33
  34
  35 class CMemFile;
  36 class CMD4Hash;
  37 class CPacket;
  38 class CServer;
  39 class CSearchFile;
  40
  41 namespace Kademlia {
  42         class CUInt128;
  43 }
  44
  45
  46 enum SearchType {
  47         LocalSearch,
  48         GlobalSearch,
  49         KadSearch
  50 };
  51
  52
  53 typedef std::vector<CSearchFile*> CSearchResultList;
  54
  55
  56 class CSearchList : public wxEvtHandler
  57 {
  58 public:
  59         //! Structure used to pass search-parameters.
  60         struct CSearchParams
  61         {
  62                 /** Prevents accidential use of uninitialized variables. */
  63                 CSearchParams() { minSize = maxSize = availability = 0; }
  64
  65                 //! The actual string to search for.
  66                 wxString searchString;
  67                 //! The type of files to search for (may be empty), one of ED2KFTSTR_*
  68                 wxString typeText;
  69                 //! The filename extension. May be empty.
  70                 wxString extension;
  71                 //! The smallest filesize in bytes to accept, zero for any.
  72                 uint32 minSize;
  73                 //! The largest filesize in bytes to accept, zero for any.
  74                 uint32 maxSize;
  75                 //! The minumum available (source-count), zero for any.
  76                 uint32 availability;
  77         };
  78
  79         /** Constructor. */
  80         CSearchList();
  81
  82         /** Frees any remaining search-results. */
  83         ~CSearchList();
  84
  85         /**
  86          * Starts a new search.
  87          *
  88          * @param searchID The ID of the search, which may be modified.
  89          * @param type The type of search, see SearchType.
  90          * @param params The search parameters, see CSearchParams.
  91          * @return An empty string on success, otherwise an error-message.
  92          */
  93         wxString StartNewSearch(uint32* searchID, SearchType type, const CSearchParams& params);
  94
  95         /** Stops the current search, if any is in progress. */
  96         void StopGlobalSearch();
  97
  98         /** Returns the completion percentage of the current search. */
  99         uint32 GetSearchProgress() const;
 100
 101         /** This function is called once the local (ed2k) search has ended. */
 102         void    LocalSearchEnd();
 103
 104
 105         /**
 106          * Returns the list of results for the specified search.
 107          *
 108          * If the search is not valid, an empty list is returned.
 109          */
 110         const   CSearchResultList& GetSearchResults(long searchID) const;
 111
 112         /** Removes all results for the specified search. */
 113         void    RemoveResults(long searchID);
 114
 115
 116         /** Finds the search-result (by hash) and downloads it in the given category. */
 117         void    AddFileToDownloadByHash(const CMD4Hash& hash, uint8 category = 0);
 118
 119
 120         /**
 121          * Processes a list of shared files from a client.
 122          *
 123          * @param packet The raw packet received from the client.
 124          * @param size the length of the packet.
 125          * @param sender The sender of the packet.
 126          * @param moreResultsAvailable Set to a value specifying if more results are available.
 127          * @param directory The directory containing the shared files.
 128          */
 129         void    ProcessSharedFileList(const byte* packet, uint32 size, CUpDownClient* sender, bool* moreResultsAvailable, const wxString& directory);
 130
 131         /**
 132          * Processes a search-result sent via TCP from the local server. All results are added.
 133          *
 134          * @param packet The packet containing one or more search-results.
 135          * @param size the length of the packet.
 136          * @param optUTF8 Specifies if the server supports UTF8.
 137          * @param serverIP The IP of the server sending the results.
 138          * @param serverPort The Port of the server sending the results.
 139          */
 140         void    ProcessSearchAnswer(const byte* packet, uint32 size, bool optUTF8, uint32 serverIP, uint16 serverPort);
 141
 142         /**
 143          * Processes a search-result sent via UDP. Only one result is read from the packet.
 144          *
 145          * @param packet The packet containing one or more search-results.
 146          * @param optUTF8 Specifies if the server supports UTF8.
 147          * @param serverIP The IP of the server sending the results.
 148          * @param serverPort The Port of the server sending the results.
 149          */
 150         void    ProcessUDPSearchAnswer(const CMemFile& packet, bool optUTF8, uint32 serverIP, uint16 serverPort);
 151
 152
 153         /**
 154          * Adds a result in the form of a kad search-keyword to the specified result-list.
 155          *
 156          * @param searchID The search to which this result belongs.
 157          * @param pfileID The hash of the result-file.
 158          * @param name The filename of the result.
 159          * @param size The filesize of the result.
 160          * @param type The filetype of the result (TODO: Not used?)
 161          * @param taglist List of additional tags assosiated with the search-result.
 162          */
 163         void    KademliaSearchKeyword(uint32 searchID, const Kademlia::CUInt128* pfileID, const wxString& name, uint64 size, const wxString& type, const TagPtrList& taglist);
 164
 165
 166 private:
 167         /** Event-handler for global searches. */
 168         void OnGlobalSearchTimer(CTimerEvent& evt);
 169
 170         /**
 171          * Adds the specified file to the current search's results.
 172          *
 173          * @param toadd The result to add.
 174          * @param clientResponse Is the result sent by a client (shared-files list).
 175          * @return True if the results were added, false otherwise.
 176          *
 177          * Note that this function takes ownership of the CSearchFile object,
 178          * regardless of whenever or not it was actually added to the results list.
 179          */
 180         bool AddToList(CSearchFile* toadd, bool clientResponse = false);
 181
 182         //! This auto-pointer is used to safely prevent leaks.
 183         typedef std::auto_ptr<CMemFile> CMemFilePtr;
 184
 185         /** Create a basic search-packet for the given search-type. */
 186         CMemFilePtr CreateSearchData(const CSearchParams& params, SearchType type);
 187
 188
 189         //! Timer used for global search intervals.
 190         CTimer  m_searchTimer;
 191
 192         //! The current search-type, regarding the last/current search.
 193         SearchType      m_searchType;
 194
 195         //! Specifies if a search is being performed.
 196         bool            m_searchInProgress;
 197
 198         //! The ID of the current search.
 199         long            m_currentSearch;
 200
 201         //! The current packet used for searches.
 202         CPacket*        m_searchPacket;
 203
 204         //! Queue of servers to ask when doing global searches.
 205         //! TODO: Replace with 'cookie' system.
 206         CQueueObserver<CServer*> m_serverQueue;
 207
 208         //! Shorthand for the map of results (key is a SearchID).
 209         typedef std::map<long, CSearchResultList> ResultMap;
 210
 211         //! Map of all search-results added.
 212         ResultMap       m_results;
 213
 214         //! Contains the results type desired in the current search.
 215         //! If not empty, results of different types are filtered.
 216         wxString        m_resultType;
 217
 218
 219         DECLARE_EVENT_TABLE()
 220 };
 221
 222
 223 #endif // SEARCHLIST_H
 224 // File_checked_for_headers