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Added support for dynamic commands.

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Dynamic commands are user commands that can be added dynamically to
the hub by a plugin.

The example plugin (mod_example.c) adds a !example command that when
invoked send a message to the user who invoked it.
This commit is contained in:
Jan Vidar Krey
2011-12-09 10:29:50 +01:00
parent 78ed83840b
commit 318163c066
23 changed files with 907 additions and 461 deletions
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147
src/core/plugincallback.c Normal file
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/*
* uhub - A tiny ADC p2p connection hub
* Copyright (C) 2007-2011, Jan Vidar Krey
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "uhub.h"
#include "plugin_api/command_api.h"
struct plugin_callback_data
{
struct linked_list* commands;
};
static struct plugin_callback_data* get_callback_data(struct plugin_handle* plugin)
{
struct plugin_callback_data* data;
uhub_assert(plugin && plugin->handle && plugin->handle->internals);
data = (struct plugin_callback_data*) plugin->handle->internals;
return data;
}
static int plugin_command_dispatch(struct command_base* cbase, struct hub_user* user, struct command_handle* handle, struct hub_command* cmd)
{
struct plugin_handle* plugin = (struct plugin_handle*) handle->ptr;
struct plugin_callback_data* data = get_callback_data(plugin);
struct plugin_command_handle* cmdh;
struct plugin_user* puser = (struct plugin_user*) user; // FIXME: Use a proper conversion function instead.
struct plugin_command* pcommand = (struct plugin_command*) cmd; // FIXME: Use a proper conversion function instead.
LOG_INFO("plugin_command_dispatch: cmd=%s", cmd->prefix);
cmdh = (struct plugin_command_handle*) list_get_first(data->commands);
while (cmdh)
{
if (cmdh->length != cmd->prefix_len)
continue;
if (strcmp(cmdh->prefix, cmd->prefix) == 0)
return cmdh->handler(plugin, puser, pcommand);
cmdh = (struct plugin_command_handle*) list_get_next(data->commands);
}
return 0;
}
struct plugin_callback_data* plugin_callback_data_create()
{
struct plugin_callback_data* data = (struct plugin_callback_data*) hub_malloc_zero(sizeof(struct plugin_callback_data));
data->commands = list_create();
return data;
}
void plugin_callback_data_destroy(struct plugin_callback_data* data)
{
if (data->commands)
{
uhub_assert(list_size(data->commands) == 0);
list_destroy(data->commands);
}
hub_free(data);
}
static struct hub_user* convert_user_type(struct plugin_user* user)
{
struct hub_user* huser = (struct hub_user*) user;
return huser;
}
static int cbfunc_send_message(struct plugin_handle* plugin, struct plugin_user* user, const char* message)
{
// struct plugin_callback_data* data = get_callback_data(plugin);
char* buffer = adc_msg_escape(message);
struct adc_message* command = adc_msg_construct(ADC_CMD_IMSG, strlen(buffer) + 6);
adc_msg_add_argument(command, buffer);
route_to_user(plugin_get_hub(plugin), convert_user_type(user), command);
adc_msg_free(command);
hub_free(buffer);
return 1;
}
static int cbfunc_user_disconnect(struct plugin_handle* plugin, struct plugin_user* user)
{
// struct plugin_callback_data* data = get_callback_data(plugin);
hub_disconnect_user(plugin_get_hub(plugin), convert_user_type(user), quit_kicked);
return 0;
}
static int cbfunc_command_add(struct plugin_handle* plugin, struct plugin_command_handle* cmdh)
{
struct plugin_callback_data* data = get_callback_data(plugin);
struct command_handle* command = (struct command_handle*) hub_malloc_zero(sizeof(struct command_handle));
command->prefix = cmdh->prefix;
command->length = cmdh->length;
command->args = cmdh->args;
command->cred = cmdh->cred;
command->description = cmdh->description;
command->origin = cmdh->origin;
command->handler = plugin_command_dispatch;
cmdh->internal_handle = data;
list_append(data->commands, cmdh);
command_add(plugin_get_hub(plugin)->commands, command, (void*) plugin);
return 0;
}
static int cbfunc_command_del(struct plugin_handle* plugin, struct plugin_command_handle* cmdh)
{
struct plugin_callback_data* data = get_callback_data(plugin);
struct command_handle* command = (struct command_handle*) cmdh->internal_handle;
list_remove(data->commands, cmdh);
cmdh->internal_handle = 0;
command_del(plugin_get_hub(plugin)->commands, (void*) command);
return 0;
}
void plugin_register_callback_functions(struct plugin_handle* handle)
{
handle->hub.send_message = cbfunc_send_message;
handle->hub.user_disconnect = cbfunc_user_disconnect;
handle->hub.command_add = cbfunc_command_add;
handle->hub.command_del = cbfunc_command_del;
}
void plugin_unregister_callback_functions(struct plugin_handle* handle)
{
}