apps/silcd/command.h

   1 /*
   2
   3   servercommand.h
   4
   5   Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
   6
   7   Copyright (C) 1997 - 2000 Pekka Riikonen
   8
   9   This program is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU General Public License as published by
  11   the Free Software Foundation; either version 2 of the License, or
  12   (at your option) any later version.
  13
  14   This program is distributed in the hope that it will be useful,
  15   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17   GNU General Public License for more details.
  18
  19 */
  20
  21 #ifndef COMMAND_H
  22 #define COMMAND_H
  23
  24 /*
  25    Structure holding one command and pointer to its function.
  26
  27    SilcCommandCb cb
  28
  29        Callback function called when this command is executed.
  30
  31    SilcCommand cmd
  32
  33        The actual command. Defined in silccore/silccommand.h
  34
  35    SilcCommandFlag flags
  36
  37        Flags for the command. These set how command behaves on different
  38        situations.
  39
  40 */
  41 typedef struct {
  42   SilcCommandCb cb;
  43   SilcCommand cmd;
  44   SilcCommandFlag flags;
  45 } SilcServerCommand;
  46
  47 /* All server commands */
  48 extern SilcServerCommand silc_command_list[];
  49
  50 /* Context sent as argument to all commands */
  51 typedef struct {
  52   SilcServer server;
  53   SilcSocketConnection sock;
  54   SilcCommandPayload payload;
  55   SilcPacketContext *packet;
  56   int pending;
  57 } *SilcServerCommandContext;
  58
  59 /* Structure holding pending commands. If command is pending it will be
  60    executed after command reply has been received and executed.
  61    Pending commands are used in cases where the original command request
  62    had to be forwarded to router. After router replies the pending
  63    command is re-executed. */
  64 typedef struct SilcServerCommandPendingStruct {
  65   SilcCommand reply_cmd;
  66   void *context;
  67   SilcCommandCb callback;
  68
  69   struct SilcServerCommandPendingStruct *next;
  70 } SilcServerCommandPending;
  71
  72 /* List of pending commands */
  73 extern SilcServerCommandPending *silc_command_pending;
  74
  75 /* Macros */
  76
  77 /* Macro used for command declaration in command list structure */
  78 #define SILC_SERVER_CMD(func, cmd, flags) \
  79 { silc_server_command_##func, SILC_COMMAND_##cmd, flags }
  80
  81 /* Macro used to declare command functions */
  82 #define SILC_SERVER_CMD_FUNC(func) \
  83 void silc_server_command_##func(void *context)
  84
  85 /* Checks for pending commands */
  86 #define SILC_SERVER_COMMAND_CHECK_PENDING(ctx)          \
  87 do {                                                    \
  88   if (silc_command_pending) {                           \
  89     SilcServerCommandPending *r;                        \
  90     SilcCommand cmd;                                    \
  91                                                         \
  92     cmd = silc_command_get(payload);                    \
  93     for (r = silc_command_pending; r; r = r->next) {    \
  94       if (r->reply_cmd == cmd) {                        \
  95         ctx->context = r->context;                      \
  96         ctx->callback = r->callback;                    \
  97         break;                                          \
  98       }                                                 \
  99     }                                                   \
 100   }                                                     \
 101 } while(0)
 102
 103 /* Executed pending command */
 104 #define SILC_SERVER_COMMAND_EXEC_PENDING(ctx, cmd)      \
 105 do {                                                    \
 106   if (ctx->callback) {                                  \
 107     (*ctx->callback)(ctx->context);                     \
 108     silc_server_command_pending_del(cmd);               \
 109   }                                                     \
 110 } while(0)
 111
 112 /* Prototypes */
 113 void silc_server_command_process(SilcServer server,
 114                                  SilcSocketConnection sock,
 115                                  SilcPacketContext *packet);
 116 void silc_server_command_pending(SilcCommand reply_cmd,
 117                                  SilcCommandCb callback,
 118                                  void *context);
 119 void silc_server_command_pending_del(SilcCommand reply_cmd);
 120 SILC_SERVER_CMD_FUNC(whois);
 121 SILC_SERVER_CMD_FUNC(whowas);
 122 SILC_SERVER_CMD_FUNC(identify);
 123 SILC_SERVER_CMD_FUNC(newuser);
 124 SILC_SERVER_CMD_FUNC(nick);
 125 SILC_SERVER_CMD_FUNC(list);
 126 SILC_SERVER_CMD_FUNC(topic);
 127 SILC_SERVER_CMD_FUNC(invite);
 128 SILC_SERVER_CMD_FUNC(quit);
 129 SILC_SERVER_CMD_FUNC(kill);
 130 SILC_SERVER_CMD_FUNC(info);
 131 SILC_SERVER_CMD_FUNC(connect);
 132 SILC_SERVER_CMD_FUNC(ping);
 133 SILC_SERVER_CMD_FUNC(oper);
 134 SILC_SERVER_CMD_FUNC(pass);
 135 SILC_SERVER_CMD_FUNC(admin);
 136 SILC_SERVER_CMD_FUNC(join);
 137 SILC_SERVER_CMD_FUNC(motd);
 138 SILC_SERVER_CMD_FUNC(umode);
 139 SILC_SERVER_CMD_FUNC(cmode);
 140 SILC_SERVER_CMD_FUNC(kick);
 141 SILC_SERVER_CMD_FUNC(ignore);
 142 SILC_SERVER_CMD_FUNC(restart);
 143 SILC_SERVER_CMD_FUNC(close);
 144 SILC_SERVER_CMD_FUNC(die);
 145 SILC_SERVER_CMD_FUNC(silcoper);
 146 SILC_SERVER_CMD_FUNC(leave);
 147 SILC_SERVER_CMD_FUNC(names);
 148
 149 #endif