| 1 | /* |
| 2 | Copyright (C) 2006 by Intra2net AG - Gerd v. Egidy |
| 3 | |
| 4 | The software in this package is distributed under the GNU General |
| 5 | Public License version 2 (with a special exception described below). |
| 6 | |
| 7 | A copy of GNU General Public License (GPL) is included in this distribution, |
| 8 | in the file COPYING.GPL. |
| 9 | |
| 10 | As a special exception, if other files instantiate templates or use macros |
| 11 | or inline functions from this file, or you compile this file and link it |
| 12 | with other works to produce a work based on this file, this file |
| 13 | does not by itself cause the resulting work to be covered |
| 14 | by the GNU General Public License. |
| 15 | |
| 16 | However the source code for this file must still be made available |
| 17 | in accordance with section (3) of the GNU General Public License. |
| 18 | |
| 19 | This exception does not invalidate any other reasons why a work based |
| 20 | on this file might be covered by the GNU General Public License. |
| 21 | */ |
| 22 | #ifndef __LIBT2N_SERVER |
| 23 | #define __LIBT2N_SERVER |
| 24 | |
| 25 | #include <iostream> |
| 26 | #include <string> |
| 27 | #include <map> |
| 28 | #include <vector> |
| 29 | #include <list> |
| 30 | |
| 31 | #include <boost/function.hpp> |
| 32 | |
| 33 | #include "connection.hxx" |
| 34 | #include "types.hxx" |
| 35 | |
| 36 | |
| 37 | namespace libt2n |
| 38 | { |
| 39 | |
| 40 | class server; |
| 41 | |
| 42 | /** |
| 43 | @brief connection on a server |
| 44 | |
| 45 | on a server every connection to a client is represented as server_connection. |
| 46 | a server_connection is abstract, derived classes like socket_server_connection are used. |
| 47 | */ |
| 48 | class server_connection : public connection |
| 49 | { |
| 50 | friend class server; |
| 51 | |
| 52 | private: |
| 53 | int timeout; |
| 54 | int last_action_time; |
| 55 | unsigned int connection_id; |
| 56 | |
| 57 | void set_server(server* _my_server) |
| 58 | { my_server=_my_server; } |
| 59 | |
| 60 | void set_id(unsigned int _connection_id) |
| 61 | { connection_id=_connection_id; } |
| 62 | |
| 63 | protected: |
| 64 | server *my_server; |
| 65 | |
| 66 | server_connection(int _timeout); |
| 67 | virtual ~server_connection(); |
| 68 | |
| 69 | std::ostream* get_logstream(log_level_values level); |
| 70 | |
| 71 | public: |
| 72 | void check_timeout(); |
| 73 | void reset_timeout(); |
| 74 | void set_timeout(int _timeout) |
| 75 | { timeout=_timeout; } |
| 76 | |
| 77 | /// get the id of this connection within the server object |
| 78 | unsigned int get_id() |
| 79 | { return connection_id; } |
| 80 | |
| 81 | void add_callback(callback_event_type event, const boost::function<void ()>& func); |
| 82 | }; |
| 83 | |
| 84 | /** |
| 85 | @brief server base class |
| 86 | |
| 87 | constitutes a server. is abstract, use derived classes like socket_server. |
| 88 | */ |
| 89 | class server |
| 90 | { |
| 91 | private: |
| 92 | int default_timeout; |
| 93 | log_level_values log_level; |
| 94 | std::ostream *logstream; |
| 95 | |
| 96 | /// vector initialized for all callback-types, all elements in each list will be called |
| 97 | std::vector<std::list<boost::function<void (unsigned int)> > > callbacks; |
| 98 | |
| 99 | unsigned int next_id; |
| 100 | |
| 101 | protected: |
| 102 | std::map<unsigned int, server_connection*> connections; |
| 103 | |
| 104 | server(); |
| 105 | |
| 106 | virtual bool fill_connection_buffers(void)=0; |
| 107 | |
| 108 | unsigned int add_connection(server_connection* newconn); |
| 109 | |
| 110 | void do_callbacks(callback_event_type event, unsigned int conn_id); |
| 111 | |
| 112 | public: |
| 113 | virtual ~server(); |
| 114 | |
| 115 | /// set the default timeout for new client connections |
| 116 | void set_default_timeout(int _default_timeout) |
| 117 | { default_timeout=_default_timeout; } |
| 118 | |
| 119 | /// get the current default timeout for client connections |
| 120 | int get_default_timeout(void) |
| 121 | { return default_timeout; } |
| 122 | |
| 123 | void set_logging(std::ostream *_logstream, log_level_values _log_level); |
| 124 | |
| 125 | server_connection* get_connection(unsigned int conn_id); |
| 126 | |
| 127 | void add_callback(callback_event_type event, const boost::function<void (unsigned int)>& func); |
| 128 | |
| 129 | /** @brief look for new data and store it in the local buffer |
| 130 | @param usec_timeout wait until new data is found, max timeout usecs. |
| 131 | -1: wait endless |
| 132 | 0: return instantly |
| 133 | @param usec_timeout_remaining if non-NULL the function will write the |
| 134 | not used time to the given target |
| 135 | @retval true if new data was found (does not mean that the received data |
| 136 | is a complete packet though) |
| 137 | */ |
| 138 | virtual bool fill_buffer(long long usec_timeout=-1, long long* usec_timeout_remaining=NULL)=0; |
| 139 | |
| 140 | void close(); |
| 141 | |
| 142 | void cleanup(); |
| 143 | |
| 144 | /** @brief get a complete data packet from any client. The packet is removed from the |
| 145 | connection buffer. |
| 146 | @param[out] data the data package |
| 147 | @retval true if packet found |
| 148 | */ |
| 149 | bool get_packet(std::string& data) |
| 150 | { unsigned int x; return get_packet(data,x); } |
| 151 | |
| 152 | bool get_packet(std::string& data, unsigned int& conn_id); |
| 153 | |
| 154 | std::ostream* get_logstream(log_level_values level); |
| 155 | }; |
| 156 | |
| 157 | } |
| 158 | |
| 159 | #endif |