external/uhub
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Merge branch 'plugin_work'

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This commit is contained in:
Jan Vidar Krey 2010-06-30 19:24:03 +02:00
commit 490f7dd835
11 changed files with 265 additions and 29 deletions
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6
GNUmakefile
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@ -146,6 +146,7 @@ libuhub_SOURCES := \
src/core/route.c \
src/core/user.c \
src/core/usermanager.c \
src/core/plugininvoke.c \
src/core/pluginloader.c \
src/network/backend.c \
src/network/connection.c \
@ -195,6 +196,9 @@ autotest_OBJECTS = autotest.o
plugin_example_SOURCES := src/plugins/mod_example.c
plugin_example_TARGET := $(plugin_example_SOURCES:.c=.so)
plugin_logging_SOURCES := src/plugins/mod_logging.c
plugin_logging_TARGET := $(plugin_example_SOURCES:.c=.so)
# Source to objects
libuhub_OBJECTS := $(libuhub_SOURCES:.c=.o)
@ -206,7 +210,7 @@ adcrush_OBJECTS := $(adcrush_SOURCES:.c=.o)
admin_OBJECTS := $(admin_SOURCES:.c=.o)
all_OBJECTS := $(libuhub_OBJECTS) $(uhub_OBJECTS) $(adcrush_OBJECTS) $(autotest_OBJECTS) $(admin_OBJECTS) $(libadc_common_OBJECTS) $(libadc_client_OBJECTS)
all_plugins := $(plugin_example_TARGET)
all_plugins := $(plugin_example_TARGET) $(plugin_logging_TARGET)
uhub_BINARY=uhub$(BIN_EXT)
adcrush_BINARY=adcrush$(BIN_EXT)

5
src/core/hub.c
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@ -826,6 +826,11 @@ void hub_plugins_load(struct hub_info* hub)
void hub_plugins_unload(struct hub_info* hub)
{
if (!hub->plugins || !hub->plugins->loaded)
{
return;
}
struct uhub_plugin_handle* plugin = (struct uhub_plugin_handle*) list_get_first(hub->plugins->loaded);
while (plugin)
{

10
src/core/hubevent.c
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@ -18,6 +18,7 @@
*/
#include "uhub.h"
#include "plugin_api/handle.h"
static void log_user_login(struct hub_user* u)
{
@ -67,6 +68,10 @@ void on_login_success(struct hub_info* hub, struct hub_user* u)
/* Print log message */
log_user_login(u);
#ifdef PLUGIN_SUPPORT
plugin_log_user_login_success(hub, u);
#endif
/* Announce new user to all connected users */
if (user_is_logged_in(u))
route_info_message(hub, u);
@ -109,6 +114,11 @@ void on_logout_user(struct hub_info* hub, struct hub_user* user)
{
const char* reason = user_get_quit_reason_string(user->quit_reason);
log_user_logout(user, reason);
#ifdef PLUGIN_SUPPORT
plugin_log_user_logout(hub, user);
#endif
hub_logout_log(hub, user);
}

19
src/core/netevent.c
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@ -175,8 +175,10 @@ void net_on_accept(struct net_connection* con, int event, void *arg)
struct hub_info* hub = (struct hub_info*) arg;
struct hub_probe* probe = 0;
struct ip_addr_encap ipaddr;
const char* addr;
int server_fd = net_con_get_sd(con);
#ifdef PLUGIN_SUPPORT
plugin_st status;
#endif
for (;;)
{
@ -194,19 +196,18 @@ void net_on_accept(struct net_connection* con, int event, void *arg)
}
}
addr = ip_convert_to_string(&ipaddr);
/* FIXME: Should have a plugin log this */
LOG_TRACE("Got connection from %s", addr);
/* FIXME: A plugin should perform this check: is IP banned? */
if (acl_is_ip_banned(hub->acl, addr))
#ifdef PLUGIN_SUPPORT
status = plugin_check_ip_early(hub, &ipaddr);
if (status == st_deny)
{
LOG_INFO("Denied [%s] (IP banned)", addr);
plugin_log_connection_denied(hub, &ipaddr);
net_close(fd);
continue;
}
plugin_log_connection_accepted(hub, &ipaddr);
#endif
probe = probe_create(hub, fd, &ipaddr);
if (!probe)
{

89
src/core/plugininvoke.c Normal file
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@ -0,0 +1,89 @@
/*
* uhub - A tiny ADC p2p connection hub
* Copyright (C) 2007-2010, 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/handle.h"
#define PLUGIN_INVOKE(HUB, FUNCNAME, CODE) \
if (HUB->plugins && HUB->plugins->loaded) \
{ \
struct uhub_plugin_handle* plugin = (struct uhub_plugin_handle*) list_get_first(HUB->plugins->loaded); \
while (plugin) \
{ \
if (plugin->funcs.FUNCNAME) \
CODE \
plugin = (struct uhub_plugin_handle*) list_get_next(HUB->plugins->loaded); \
} \
}
plugin_st plugin_check_ip_early(struct hub_info* hub, struct ip_addr_encap* addr)
{
plugin_st status = st_default;
PLUGIN_INVOKE(hub, login_check_ip_early, {
status = plugin->funcs.login_check_ip_early(addr);
if (status != st_default)
break;
});
return status;
}
plugin_st plugin_check_ip_late(struct hub_info* hub, struct ip_addr_encap* addr)
{
plugin_st status = st_default;
PLUGIN_INVOKE(hub, login_check_ip_late, {
status = plugin->funcs.login_check_ip_late(addr);
if (status != st_default)
break;
});
return status;
}
void plugin_log_connection_accepted(struct hub_info* hub, struct ip_addr_encap* ipaddr)
{
const char* addr = ip_convert_to_string(ipaddr);
LOG_TRACE("Got connection from %s", addr);
}
void plugin_log_connection_denied(struct hub_info* hub, struct ip_addr_encap* ipaddr)
{
const char* addr = ip_convert_to_string(ipaddr);
LOG_INFO("Denied connection from %s", addr);
}
void plugin_log_user_login_success(struct hub_info* hub, struct hub_user* user)
{
}
void plugin_log_user_login_error(struct hub_info* hub, struct hub_user* user)
{
}
void plugin_log_user_logout(struct hub_info* hub, struct hub_user* user)
{
}
void convert_user_to_plugin_user(struct plugin_user* puser, struct hub_user* user)
{
puser->sid = user->id.sid;
puser->nick = user->id.nick;
puser->cid = user->id.cid;
puser->addr = user->id.addr;
}

46
src/core/plugininvoke.h Normal file
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@ -0,0 +1,46 @@
/*
* uhub - A tiny ADC p2p connection hub
* Copyright (C) 2007-2010, 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/>.
*
*/
#ifndef HAVE_UHUB_PLUGIN_INVOKE_H
#define HAVE_UHUB_PLUGIN_INVOKE_H
#include "uhub.h"
#include "plugin_api/handle.h"
#ifdef PLUGIN_SUPPORT
struct hub_info;
struct ip_addr_encap;
void plugin_log_connection_accepted(struct hub_info* hub, struct ip_addr_encap* addr);
void plugin_log_connection_denied(struct hub_info* hub, struct ip_addr_encap* addr);
void plugin_log_user_login_success(struct hub_info* hub, struct hub_user* user);
void plugin_log_user_login_error(struct hub_info* hub, struct hub_user* user);
void plugin_log_user_logout(struct hub_info* hub, struct hub_user* user);
plugin_st plugin_check_ip_early(struct hub_info* hub, struct ip_addr_encap* addr);
plugin_st plugin_check_ip_late(struct hub_info* hub, struct ip_addr_encap* addr);
plugin_st plugin_check_nickname_valid(struct hub_info* hub, const char* nick);
plugin_st plugin_check_nickname_reserved(struct hub_info* hub, const char* nick);
#endif
#endif // HAVE_UHUB_PLUGIN_INVOKE_H

6
src/core/pluginloader.c
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@ -24,6 +24,7 @@
struct uhub_plugin* plugin_open(const char* filename)
{
LOG_TRACE("plugin_open: \"%s\"", filename);
#ifdef HAVE_DLOPEN
struct uhub_plugin* plugin = (struct uhub_plugin*) hub_malloc_zero(sizeof(struct uhub_plugin));
if (!plugin)
@ -92,7 +93,9 @@ struct uhub_plugin_handle* plugin_load(const char* filename, const char* config)
{
if (handle->plugin_api_version == PLUGIN_API_VERSION && handle->plugin_funcs_size == sizeof(struct plugin_funcs))
{
LOG_INFO("Loaded plugin: %s: \"%s\", version %s.", filename, handle->name, handle->version);
LOG_INFO("Loaded plugin: %s: %s, version %s.", filename, handle->name, handle->version);
LOG_TRACE("Plugin API version: %d (func table size: " PRINTF_SIZE_T ")", handle->plugin_api_version, handle->plugin_funcs_size);
plugin->unregister = unregister_f;
return handle;
}
else
@ -113,6 +116,7 @@ struct uhub_plugin_handle* plugin_load(const char* filename, const char* config)
void plugin_unload(struct uhub_plugin_handle* plugin)
{
plugin->handle->unregister(plugin);
plugin_close(plugin->handle);
}

3
src/core/pluginloader.h
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@ -20,6 +20,8 @@
#ifndef HAVE_UHUB_PLUGIN_LOADER_H
#define HAVE_UHUB_PLUGIN_LOADER_H
#include "plugin_api/handle.h"
#ifdef PLUGIN_SUPPORT
struct hub_config;
@ -31,6 +33,7 @@ struct uhub_plugin
#ifdef HAVE_DLOPEN
void* handle;
#endif
plugin_unregister_f unregister;
};
struct uhub_plugins

52
src/plugin_api/handle.h
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@ -17,6 +17,9 @@
*
*/
#ifndef HAVE_UHUB_PLUGIN_HANDLE_H
#define HAVE_UHUB_PLUGIN_HANDLE_H
#include "system.h"
#include "util/ipcalc.h"
@ -45,7 +48,6 @@ enum plugin_status
st_default = 0, /* Use default */
st_allow = 1, /* Allow action */
st_deny = -1, /* Deny action */
st_restrict = -2, /* Further action required */
};
typedef enum plugin_status plugin_st;
@ -69,17 +71,24 @@ struct auth_info
enum auth_credentials credentials;
};
typedef plugin_st (*on_connect_t)(struct ip_addr_encap*);
typedef plugin_st (*on_chat_msg_t)(struct plugin_user* from, const char* message);
typedef plugin_st (*on_private_msg_t)(struct plugin_user* from, struct plugin_user* to, const char* message);
typedef plugin_st (*on_search_t)(struct plugin_user* from, const char* data);
typedef plugin_st (*on_p2p_connect_t)(struct plugin_user* from, struct plugin_user* to);
typedef plugin_st (*on_p2p_revconnect_t)(struct plugin_user* from, struct plugin_user* to);
typedef void (*on_user_connect_t)(struct ip_addr_encap*);
typedef void (*on_user_login_t)(struct plugin_user*);
typedef void (*on_user_logout_t)(struct plugin_user*);
typedef void (*on_user_nick_change_t)(struct plugin_user*, const char* new_nick);
typedef plugin_st (*on_change_nick_t)(struct plugin_user*, const char* new_nick);
typedef plugin_st (*on_check_ip_early_t)(struct ip_addr_encap*);
typedef plugin_st (*on_check_ip_late_t)(struct ip_addr_encap*);
typedef plugin_st (*on_validate_nick_t)(const char* nick);
typedef plugin_st (*on_validate_cid_t)(const char* cid);
typedef plugin_st (*on_change_nick_t)(struct plugin_user*, const char* new_nick);
typedef int (*auth_get_user_t)(const char* nickname, struct auth_info* info);
typedef plugin_st (*auth_register_user_t)(struct auth_info* user);
typedef plugin_st (*auth_update_user_t)(struct auth_info* user);
@ -88,23 +97,28 @@ typedef plugin_st (*auth_delete_user_t)(struct auth_info* user);
struct plugin_funcs
{
// Users logging in and out
on_connect_t on_connect;
on_user_login_t on_user_login;
on_user_logout_t on_user_logout;
on_change_nick_t on_user_change_nick;
on_user_connect_t on_user_connect; /* A user has connected to the hub */
on_user_login_t on_user_login; /* A user has successfully logged in to the hub */
on_user_logout_t on_user_logout; /* A user has logged out of the hub (was previously logged in) */
on_user_nick_change_t on_user_nick_change; /* A user has changed nickname */
// Activity events
on_chat_msg_t on_chat_msg;
on_private_msg_t on_private_msg;
on_search_t on_search;
on_p2p_connect_t on_p2p_connect;
on_p2p_revconnect_t on_p2p_revconnect;
// Activity events (can be intercepted and refused by a plugin)
on_chat_msg_t on_chat_msg; /* A public chat message is about to be sent (can be intercepted) */
on_private_msg_t on_private_msg; /* A public chat message is about to be sent (can be intercepted) */
on_search_t on_search; /* A search is about to be sent (can be intercepted) */
on_p2p_connect_t on_p2p_connect; /* A user is about to connect to another user (can be intercepted) */
on_p2p_revconnect_t on_p2p_revconnect; /* A user is about to connect to another user (can be intercepted) */
// Authentication actions.
auth_get_user_t auth_get_user; /* Get authentication info from plugin */
auth_register_user_t auth_register_user; /* Register user */
auth_update_user_t auth_update_user; /* Update a registered user */
auth_delete_user_t auth_delete_user; /* Delete a registered user */
// Login check functions
on_check_ip_early_t login_check_ip_early;
on_check_ip_late_t login_check_ip_late;
// Authentication
auth_get_user_t auth_get_user;
auth_register_user_t auth_register_user;
auth_update_user_t auth_update_user;
auth_delete_user_t auth_delete_user;
};
struct uhub_plugin_handle
@ -135,3 +149,5 @@ extern int plugin_unregister(struct uhub_plugin_handle*);
typedef int (*plugin_register_f)(struct uhub_plugin_handle* handle, const char* config);
typedef int (*plugin_unregister_f)(struct uhub_plugin_handle*);
#endif /* HAVE_UHUB_PLUGIN_HANDLE_H */

57
src/plugins/mod_logging.c Normal file
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@ -0,0 +1,57 @@
/**
* This is a minimal example plugin for uhub.
*/
// #include "uhub.h"
#include "plugin_api/handle.h"
struct ip_addr_encap;
plugin_st log_connect(struct ip_addr_encap* addr)
{
return st_default;
}
void log_user_login(struct plugin_user* user)
{
printf("login: \"%s\"\n", user->nick);
}
void log_user_logout(struct plugin_user* user)
{
printf("logout: \"%s\"\n", user->nick);
}
plugin_st log_change_nick(struct plugin_user* user, const char* new_nick)
{
printf("\"%s\" -> \"%s\"\n", user->nick, new_nick);
return st_default;
}
int plugin_register(struct uhub_plugin_handle* plugin, const char* config)
{
plugin->name = "Logging plugin";
plugin->version = "1.0";
plugin->description = "Logs users entering and leaving the hub.";
plugin->ptr = NULL;
plugin->plugin_api_version = PLUGIN_API_VERSION;
plugin->plugin_funcs_size = sizeof(struct plugin_funcs);
memset(&plugin->funcs, 0, sizeof(struct plugin_funcs));
plugin->funcs.on_connect = log_connect;
plugin->funcs.on_user_login = log_user_login;
plugin->funcs.on_user_logout = log_user_logout;
plugin->funcs.on_user_change_nick = log_change_nick;
puts("* plugin register");
return 0;
}
int plugin_unregister(struct uhub_plugin_handle* plugin)
{
/* No need to do anything! */
puts("* plugin unregister");
return 0;
}

1
src/uhub.h
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@ -86,6 +86,7 @@ extern "C" {
#include "core/commands.h"
#include "core/inf.h"
#include "core/hubevent.h"
#include "core/plugininvoke.h"
#include "core/pluginloader.h"
#ifdef __cplusplus