| 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_COMMAND_SERVER |
| 23 | #define __LIBT2N_COMMAND_SERVER |
| 24 | |
| 25 | #include "command.hxx" |
| 26 | #include "server.hxx" |
| 27 | |
| 28 | namespace libt2n |
| 29 | { |
| 30 | |
| 31 | /// a server handling incoming commands |
| 32 | class command_server |
| 33 | { |
| 34 | private: |
| 35 | server& s; |
| 36 | |
| 37 | void handle_packet(const std::string& packet, server_connection* conn); |
| 38 | |
| 39 | int guard_handle; |
| 40 | |
| 41 | protected: |
| 42 | virtual command* cast_command(command* input) |
| 43 | { return input; } |
| 44 | |
| 45 | public: |
| 46 | command_server(server& _s); |
| 47 | ~command_server(); |
| 48 | |
| 49 | void handle(long long usec_timeout=-1, long long* usec_timeout_remaining=NULL); |
| 50 | |
| 51 | void send_hello(unsigned int conn_id); |
| 52 | |
| 53 | std::ostream* get_logstream(log_level_values level) |
| 54 | { return s.get_logstream(level); } |
| 55 | }; |
| 56 | |
| 57 | template<class T, class B> struct Derived_from { |
| 58 | static void constraints(T* p) { B* pb = p; } |
| 59 | Derived_from() { void(*p)(T*) = constraints; } |
| 60 | }; |
| 61 | |
| 62 | /** @brief server handling group of incoming commands |
| 63 | |
| 64 | the template must be derived from libt2n::command. |
| 65 | */ |
| 66 | template<class COMMAND_GROUP> |
| 67 | class group_command_server : public command_server |
| 68 | { |
| 69 | private: |
| 70 | virtual command* cast_command(command* input) |
| 71 | { return dynamic_cast<COMMAND_GROUP*>(input); } |
| 72 | |
| 73 | public: |
| 74 | group_command_server(server& _s) |
| 75 | : command_server(_s) |
| 76 | { Derived_from<COMMAND_GROUP,command>(); } |
| 77 | }; |
| 78 | |
| 79 | } |
| 80 | #endif |
| 81 | |