| 1 | /// ----------------------------------------*- mode: C++; -*--
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| 2 | /// @file connectionmap.h
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| 3 | /// maintains connection mapping of application addresses to sockets and vice versa
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| 4 | /// ----------------------------------------------------------
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| 5 | /// $Id: connectionmap.h 2549 2007-04-02 22:17:37Z bless $
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| 6 | /// $HeadURL: https://svn.ipv6.tm.uka.de/nsis/protlib/trunk/include/connectionmap.h $
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| 7 | // ===========================================================
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| 8 | //
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| 9 | // Copyright (C) 2005-2007, all rights reserved by
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| 10 | // - Institute of Telematics, Universitaet Karlsruhe (TH)
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| 11 | //
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| 12 | // More information and contact:
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| 13 | // https://projekte.tm.uka.de/trac/NSIS
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| 14 | //
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| 15 | // This program is free software; you can redistribute it and/or modify
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| 16 | // it under the terms of the GNU General Public License as published by
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| 17 | // the Free Software Foundation; version 2 of the License
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| 18 | //
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| 19 | // This program is distributed in the hope that it will be useful,
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| 20 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 22 | // GNU General Public License for more details.
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| 23 | //
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| 24 | // You should have received a copy of the GNU General Public License along
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| 25 | // with this program; if not, write to the Free Software Foundation, Inc.,
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| 26 | // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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| 27 | //
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| 28 | // ===========================================================
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| 29 | #ifndef CONNECTION_MAP_H
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| 30 | #define CONNECTION_MAP_H
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| 31 |
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| 32 | #include "assocdata.h"
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| 33 | #include <ext/hash_map>
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| 34 |
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| 35 | namespace protlib {
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| 36 |
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| 37 | /* @class ConnectionMap
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| 38 | * maintains connection mapping of application addresses to sockets and vice versa
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| 39 | * @ingroup network
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| 40 | * @{
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| 41 | */
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| 42 | class ConnectionMap {
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| 43 | public:
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| 44 | // a constructor may be needed here in this class
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| 45 | /// Insert a new AssocData element into the ConnectionMap
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| 46 | bool insert(AssocData* assoc);
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| 47 | /// Search for existing connections to this specific socket
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| 48 | AssocData* lookup(socketfd_t socketfd) const;
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| 49 | /// Search for existing connections to this specific assoc id
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| 50 | AssocData* lookup(associd_t associd) const;
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| 51 | ///Search for existing connections to this address
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| 52 | AssocData* lookup(const appladdress& addr) const;
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| 53 | /// Erase the AssocData-element associated with this socket
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| 54 | bool erase(socketfd_t socketfd);
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| 55 | /// Erase the AssocData-element associated with this socket
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| 56 | bool erase(associd_t associd);
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| 57 | /// Erase the AssocData-element
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| 58 | bool erase(AssocData* assoc);
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| 59 | /// clear all
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| 60 | void clear();
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| 61 | /// get number of records
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| 62 | size_t get_size() const;
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| 63 | private:
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| 64 | // this hash_map uses the standard hashfunction on the first entry, int
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| 65 |
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| 66 | // only typedefs
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| 67 | typedef hash_map<socketfd_t ,AssocData*> ass2data_t;
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| 68 | typedef ass2data_t::const_iterator const_ass2data_it_t;
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| 69 | typedef hash_map<appladdress,AssocData*> addr2data_t;
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| 70 | typedef addr2data_t::const_iterator const_addr2data_it_t;
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| 71 |
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| 72 | // internal hashmaps
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| 73 | ass2data_t ass2data; ///< map: socket fd to association data
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| 74 | addr2data_t addr2data; ///< map: (application) address to association data
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| 75 | public:
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| 76 | /// connection map iterator
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| 77 | typedef const_ass2data_it_t const_it_t;
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| 78 | const_it_t begin() const;
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| 79 | const_it_t end() const;
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| 80 | }; // end class ConnectionMap
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| 81 |
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| 82 | inline
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| 83 | size_t
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| 84 | ConnectionMap::get_size() const { return ass2data.size(); }
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| 85 |
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| 86 | inline
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| 87 | ConnectionMap::const_it_t ConnectionMap::begin() const {
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| 88 | return ass2data.begin();
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| 89 | } // end begin
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| 90 |
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| 91 | inline
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| 92 | ConnectionMap::const_it_t ConnectionMap::end() const {
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| 93 | return ass2data.end();
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| 94 | } // end end
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| 95 |
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| 96 | inline
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| 97 | bool
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| 98 | ConnectionMap::erase(AssocData* assoc) {
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| 99 | return assoc ? erase(assoc->socketfd) : false;
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| 100 | } // end erase
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| 101 |
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| 102 | //@}
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| 103 |
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| 104 | } // end namespace protlib
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| 105 | #endif
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