void probe_destroy(struct hub_probe* probe)
{
LOG_TRACE("probe_destroy(): %p (connection=%p)", probe, probe->connection);
if (probe->connection)
{
net_con_close(probe->connection);
probe->connection = 0;
}
hub_free(probe);
}
static int command_showtopic_handler(struct plugin_handle* plugin, struct plugin_user* user, struct plugin_command* cmd)
{
struct cbuffer* buf = cbuf_create(128);
char* topic = plugin->hub.get_description(plugin);
cbuf_append_format(buf, "*** %s: Current topic is: \"%s\"", cmd->prefix, topic);
plugin->hub.send_message(plugin, user, cbuf_get(buf));
cbuf_destroy(buf);
hub_free(topic);
return 0;
}
static int apply_string(const char* key, const char* data, char** target, char* regexp)
{
(void) regexp;
// FIXME: Add regexp checks for correct data
if (*target)
hub_free(*target);
*target = hub_strdup(data);
return 1;
}
struct auth_info* acl_get_access_info(struct hub_info* hub, const char* name)
{
struct auth_info* info = 0;
info = (struct auth_info*) hub_malloc(sizeof(struct auth_info));
if (plugin_auth_get_user(hub, name, info) != st_allow)
{
hub_free(info);
return NULL;
}
return info;
}
struct net_connect_handle* net_con_connect(const char* address, uint16_t port, net_connect_cb callback, void* ptr)
{
struct net_connect_handle* handle = hub_malloc_zero(sizeof(struct net_connect_handle));
handle->address = hub_strdup(address);
handle->port = port;
handle->ptr = ptr;
handle->callback = callback;
// FIXME: Check if DNS resolving is necessary ?
handle->dns = net_dns_gethostbyname(address, AF_UNSPEC, net_con_connect_dns_callback, handle);
if (!handle->dns)
{
LOG_TRACE("net_con_connect(): Unable to create DNS lookup job.");
hub_free((char*) handle->address);
hub_free(handle);
return NULL;
}
return handle;
}
static void hub_command_args_free(struct hub_command* cmd)
{
struct hub_command_arg_data* data = NULL;
if (!cmd->args)
return;
LIST_FOREACH(struct hub_command_arg_data*, data, cmd->args,
{
switch (data->type)
{
case type_string:
hub_free(data->data.string);
break;
case type_range:
hub_free(data->data.range);
break;
default:
break;
}
});
void net_notify_destroy(struct uhub_notify_handle* handle)
{
LOG_TRACE("net_notify_destroy()");
#ifndef WIN32
net_con_destroy(handle->con);
close(handle->pipe_fd[0]);
close(handle->pipe_fd[1]);
handle->pipe_fd[0] = -1;
handle->pipe_fd[0] = -1;
#endif
hub_free(handle);
}
void ADC_client_destroy(struct ADC_client* client)
{
ADC_TRACE;
ADC_client_disconnect(client);
ioq_send_destroy(client->send_queue);
ioq_recv_destroy(client->recv_queue);
hub_free(client->timer);
adc_msg_free(client->info);
hub_free(client->nick);
hub_free(client->desc);
hub_free(client->address.hostname);
hub_free(client);
if (g_adc_client && g_adc_client->references > 0)
{
g_adc_client->references--;
if (!g_adc_client->references)
{
#ifdef SSL_SUPPORT
net_ssl_context_destroy(g_adc_client->ctx);
g_adc_client->ctx = NULL;
#endif
hub_free(g_adc_client);
g_adc_client = NULL;
}
}
}
static void log_change_nick(struct plugin_handle* plugin, struct plugin_user* user, const char* new_nick)
{
struct log_data* ldata = (struct log_data*) plugin->ptr;
const char* addr = ip_convert_to_string(&user->addr);
char* nick = strdup(sql_escape_string(user->nick));
int rc = sql_execute(ldata, null_callback, NULL, "INSERT INTO userlog VALUES('', '%s', '%s', '', '', '%s (%s -> %s)', DATETIME('NOW', 'localtime', '%d hours'));", user->cid, addr, "NickChange", nick, new_nick, ldata->srvtdiff);
if (rc < 0)
fprintf(stderr, "[SQLITE LOG] Unable to log: NickChange %s/%s %s \"%s\" -> \"%s\"\n", sid_to_string(user->sid), user->cid, addr, user->nick, new_nick);
hub_free(nick);
}
/*
* Set the expected credentials, and returns 1 if authentication is needed,
* or 0 if not.
* If the hub is configured to allow only registered users and the user
* is not recognized this will return 1.
*/
static int set_credentials(struct hub_info* hub, struct hub_user* user, struct adc_message* cmd)
{
int ret = 0;
struct auth_info* info = acl_get_access_info(hub, user->id.nick);
if (info)
{
user->credentials = info->credentials;
ret = 1;
}
else
{
user->credentials = auth_cred_guest;
}
hub_free(info);
switch (user->credentials)
{
case auth_cred_none:
break;
case auth_cred_bot:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_BOT);
break;
case auth_cred_guest:
/* Nothing to be added to the info message */
break;
case auth_cred_user:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_REGISTERED_USER);
break;
case auth_cred_operator:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_OPERATOR);
break;
case auth_cred_super:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_SUPER_USER);
break;
case auth_cred_admin:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_ADMIN);
break;
case auth_cred_link:
break;
}
return ret;
}
int uman_shutdown(struct hub_info* hub)
{
if (!hub || !hub->users)
return -1;
if (net_backend_get_timeout_queue())
{
timeout_queue_remove(net_backend_get_timeout_queue(), hub->users->timeout);
hub_free(hub->users->timeout);
}
if (hub->users->list)
{
list_clear(hub->users->list, &clear_user_list_callback);
list_destroy(hub->users->list);
}
sid_pool_destroy(hub->users->sids);
hub_free(hub->users);
hub->users = 0;
return 0;
}
void hub_shutdown_service(struct hub_info* hub)
{
LOG_DEBUG("hub_shutdown_service()");
#ifdef SSL_SUPPORT
unload_ssl_certificates(hub);
#endif
event_queue_shutdown(hub->queue);
net_con_close(hub->server);
hub_free(hub->server);
server_alt_port_stop(hub);
uman_shutdown(hub);
hub->status = hub_status_stopped;
hub_free(hub->sendbuf);
hub_free(hub->recvbuf);
hub_chat_history_clear(hub);
list_destroy(hub->chat_history);
list_clear(hub->logout_info, &hub_free);
list_destroy(hub->logout_info);
hub_free(hub);
hub = 0;
g_hub = 0;
}
static int command_releaseadd(struct plugin_handle* plugin, struct plugin_user* user, struct plugin_command* cmd)
{
struct extras_data* extrasdata = (struct extras_data*) plugin->ptr;
struct cbuffer* buf = cbuf_create(128);
struct plugin_command_arg_data* arg1 = (struct plugin_command_arg_data*) list_get_first(cmd->args);
struct plugin_command_arg_data* arg2 = (struct plugin_command_arg_data*) list_get_next(cmd->args);
char* tth = strdup(sql_escape_string(arg1->data.string));
char* title = strdup(sql_escape_string(arg2->data.string));
int rc = sql_execute(extrasdata, null_callback, NULL, "INSERT INTO releases (id, title, tth) VALUES(NULL, '%s', '%s');", title, tth);
if (rc > 0)
cbuf_append_format(buf, "*** %s: Added \"%s\" to releases.", cmd->prefix, title);
else
cbuf_append_format(buf, "*** %s: Unable to add \"%s\" to releases.", cmd->prefix, title);
plugin->hub.send_message(plugin, user, cbuf_get(buf));
cbuf_destroy(buf);
hub_free(tth);
hub_free(title);
return 0;
}
/**
* Create a new SSL context.
*/
struct ssl_context_handle* net_ssl_context_create(const char* tls_version, const char* tls_ciphersuite)
{
struct net_context_openssl* ctx = (struct net_context_openssl*) hub_malloc_zero(sizeof(struct net_context_openssl));
const SSL_METHOD* ssl_method = get_ssl_method(tls_version);
if (!ssl_method)
{
hub_free(ctx);
return 0;
}
ctx->ssl = SSL_CTX_new(ssl_method);
/* Disable SSLv2 */
SSL_CTX_set_options(ctx->ssl, SSL_OP_NO_SSLv2);
// FIXME: Why did we need this again?
SSL_CTX_set_quiet_shutdown(ctx->ssl, 1);
#ifdef SSL_OP_NO_COMPRESSION
/* Disable compression */
LOG_TRACE("Disabling SSL compression."); /* "CRIME" attack */
SSL_CTX_set_options(ctx->ssl, SSL_OP_NO_COMPRESSION);
#endif
/* Set preferred cipher suite */
if (SSL_CTX_set_cipher_list(ctx->ssl, tls_ciphersuite) != 1)
{
LOG_ERROR("Unable to set cipher suite.");
SSL_CTX_free(ctx->ssl);
hub_free(ctx);
return 0;
}
return (struct ssl_context_handle*) ctx;
}
static struct acl_data* parse_config(const char* line)
{
struct acl_data* data = (struct acl_data*) hub_malloc_zero(sizeof(struct acl_data));
struct cfg_tokens* tokens = cfg_tokenize(line);
char* token = cfg_token_get_first(tokens);
if (!data)
return 0;
// set defaults
data->readonly = 1;
data->exclusive = 0;
data->users = list_create();
while (token)
{
char* split = strchr(token, '=');
size_t len = strlen(token);
size_t key = split ? (split - token) : len;
if (key == 4 && strncmp(token, "file", 4) == 0)
{
if (data->file)
hub_free(data->file);
data->file = strdup(split + 1);
}
else if (key == 8 && strncmp(token, "readonly", 8) == 0)
{
if (!string_to_boolean(split + 1, &data->readonly))
data->readonly = 1;
}
else if (key == 9 && strncmp(token, "exclusive", 9) == 0)
{
if (!string_to_boolean(split + 1, &data->exclusive))
data->exclusive = 1;
}
else
{
cfg_tokens_free(tokens);
free_acl(data);
return 0;
}
token = cfg_token_get_next(tokens);
}
cfg_tokens_free(tokens);
return data;
}
struct plugin_handle* plugin_load(const char* filename, const char* config)
{
plugin_register_f register_f;
plugin_unregister_f unregister_f;
int ret;
struct plugin_handle* handle = hub_malloc_zero(sizeof(struct plugin_handle));
struct uhub_plugin* plugin = plugin_open(filename);
if (!plugin)
return NULL;
if (!handle)
{
plugin_close(plugin);
return NULL;
}
handle->handle = plugin;
register_f = plugin_lookup_symbol(plugin, "plugin_register");
unregister_f = plugin_lookup_symbol(plugin, "plugin_unregister");
if (register_f && unregister_f)
{
ret = register_f(handle, config);
if (ret == 0)
{
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_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
{
LOG_ERROR("Unable to load plugin: %s - API version mistmatch", filename);
}
}
else
{
LOG_ERROR("Unable to load plugin: %s - Failed to initialize: %s", filename, handle->error_msg);
}
}
plugin_close(plugin);
hub_free(handle);
return NULL;
}
/**
* Add a chat message to history.
*/
static void history_add(struct plugin_handle* plugin, struct plugin_user* from, const char* message, int flags)
{
size_t loglen = strlen(message) + strlen(from->nick) + 13;
struct chat_history_data* data = (struct chat_history_data*) plugin->ptr;
char* log = hub_malloc(loglen + 1);
snprintf(log, loglen, "%s <%s> %s\n", get_timestamp(time(NULL)), from->nick, message);
log[loglen] = '\0';
list_append(data->chat_history, log);
while (list_size(data->chat_history) > data->history_max)
{
char* msg = list_get_first(data->chat_history);
list_remove(data->chat_history, msg);
hub_free(msg);
}
}
void hub_plugins_load(struct hub_info* hub)
{
if (!hub->config->file_plugins || !*hub->config->file_plugins)
return;
hub->plugins = hub_malloc_zero(sizeof(struct uhub_plugins));
if (!hub->plugins)
return;
if (plugin_initialize(hub->config, hub->plugins) < 0)
{
hub_free(hub->plugins);
hub->plugins = 0;
return;
}
}
void user_destroy(struct hub_user* user)
{
LOG_TRACE("user_destroy(), user=%p", user);
ioq_recv_destroy(user->recv_queue);
ioq_send_destroy(user->send_queue);
if (user->connection)
{
LOG_TRACE("user_destory() -> net_con_close(%p)", user->connection);
net_con_close(user->connection);
}
adc_msg_free(user->info);
user_clear_feature_cast_support(user);
hub_free(user);
}
void hub_logout_log(struct hub_info* hub, struct hub_user* user)
{
struct hub_logout_info* loginfo = hub_malloc_zero(sizeof(struct hub_logout_info));
if (!loginfo) return;
loginfo->time = time(NULL);
strcpy(loginfo->cid, user->id.cid);
strcpy(loginfo->nick, user->id.nick);
memcpy(&loginfo->addr, &user->id.addr, sizeof(struct ip_addr_encap));
loginfo->reason = user->quit_reason;
list_append(hub->logout_info, loginfo);
while (list_size(hub->logout_info) > (size_t) hub->config->max_logout_log)
{
struct hub_logout_info* entry = list_get_first(hub->logout_info);
list_remove(hub->logout_info, entry);
hub_free(entry);
}
}
/**
* The callback function for handling the !history command.
*/
static int command_history(struct plugin_handle* plugin, struct plugin_user* user, struct plugin_command* cmd)
{
struct chat_history_data* data = (struct chat_history_data*) plugin->ptr;
struct cbuffer* buf = cbuf_create(MAX_HISTORY_SIZE);
struct linked_list* found = (struct linked_list*) list_create();
struct plugin_command_arg_data* arg = plugin->hub.command_arg_next(plugin, cmd, plugin_cmd_arg_type_integer);
int maxlines;
if (arg)
maxlines = arg->data.integer;
else
maxlines = data->history_default;
sql_execute(data, get_messages_callback, found, "SELECT from_nick,message, datetime(time, 'localtime') as time FROM chat_history ORDER BY time DESC LIMIT 0,%d;", maxlines);
size_t linecount = list_size(found);
if (linecount > 0)
{
cbuf_append_format(buf, "*** %s: Chat History:\n\n", cmd->prefix);
struct chat_history_line* history_line;
history_line = (struct chat_history_line*) list_get_last(found);
while (history_line)
{
cbuf_append_format(buf, "[%s] <%s> %s\n", history_line->time, history_line->from, history_line->message);
list_remove(found, history_line);
hub_free(history_line);
history_line = (struct chat_history_line*) list_get_last(found);
}
}
else
{
cbuf_append_format(buf, "*** %s: No messages found.", cmd->prefix);
}
plugin->hub.send_message(plugin, user, cbuf_get(buf));
cbuf_destroy(buf);
list_clear(found, &hub_free);
list_destroy(found);
return 0;
}
struct uhub_notify_handle* net_notify_create(net_notify_callback cb, void* ptr)
{
LOG_TRACE("net_notify_create()");
struct uhub_notify_handle* handle = (struct uhub_notify_handle*) hub_malloc(sizeof(struct uhub_notify_handle));
handle->callback = cb;
handle->ptr = ptr;
#ifndef WIN32
int ret = pipe(handle->pipe_fd);
if (ret == -1)
{
LOG_ERROR("Unable to setup notification pipes.");
hub_free(handle);
return 0;
}
handle->con = net_con_create();
net_con_initialize(handle->con, handle->pipe_fd[0], notify_callback, handle, NET_EVENT_READ);
#endif
return handle;
}
void hub_send_flood_warning(struct hub_info* hub, struct hub_user* u, const char* message)
{
struct adc_message* msg;
char* tmp;
if (user_flag_get(u, flag_flood))
return;
msg = adc_msg_construct(ADC_CMD_ISTA, 128);
if (msg)
{
tmp = adc_msg_escape(message);
adc_msg_add_argument(msg, "110");
adc_msg_add_argument(msg, tmp);
hub_free(tmp);
route_to_user(hub, u, msg);
user_flag_set(u, flag_flood);
adc_msg_free(msg);
}
}
int hub_handle_password(struct hub_info* hub, struct hub_user* u, struct adc_message* cmd)
{
char* password = adc_msg_get_argument(cmd, 0);
int ret = 0;
if (u->state == state_verify)
{
if (acl_password_verify(hub, u, password))
{
on_login_success(hub, u);
}
else
{
on_login_failure(hub, u, status_msg_auth_invalid_password);
ret = -1;
}
}
hub_free(password);
return ret;
}
int acl_password_verify(struct hub_info* hub, struct hub_user* user, const char* password)
{
char buf[1024];
struct auth_info* access;
const char* challenge;
char raw_challenge[64];
char password_calc[64];
uint64_t tiger_res[3];
size_t password_len;
if (!password || !user || strlen(password) != MAX_CID_LEN)
return 0;
access = acl_get_access_info(hub, user->id.nick);
if (!access)
return 0;
challenge = acl_password_generate_challenge(hub, user);
base32_decode(challenge, (unsigned char*) raw_challenge, MAX_CID_LEN);
password_len = strlen(access->password);
memcpy(&buf[0], access->password, password_len);
memcpy(&buf[password_len], raw_challenge, TIGERSIZE);
tiger((uint64_t*) buf, TIGERSIZE+password_len, (uint64_t*) tiger_res);
base32_encode((unsigned char*) tiger_res, TIGERSIZE, password_calc);
password_calc[MAX_CID_LEN] = 0;
#ifdef PLUGIN_SUPPORT
hub_free(access);
#endif
if (strcasecmp(password, password_calc) == 0)
{
return 1;
}
return 0;
}
struct sid_pool* sid_pool_create(sid_t max)
{
struct sid_pool* pool = hub_malloc(sizeof(struct sid_pool));
if (!pool)
return 0;
pool->min = 1;
pool->max = max + 1;
pool->count = 0;
pool->map = hub_malloc_zero(sizeof(struct hub_user*) * pool->max);
if (!pool->map)
{
hub_free(pool);
return 0;
}
pool->map[0] = (struct hub_user*) pool; /* hack to reserve the first sid. */
#ifdef DEBUG_SID
LOG_DUMP("SID_POOL: max=%d", (int) pool->max);
#endif
return pool;
}
struct net_backend* net_backend_init_epoll(struct net_backend_handler* handler, struct net_backend_common* common)
{
struct net_backend_epoll* backend;
if (getenv("EVENT_NOEPOLL"))
return 0;
backend = hub_malloc_zero(sizeof(struct net_backend_epoll));
backend->epfd = epoll_create(common->max);
if (backend->epfd == -1)
{
LOG_WARN("Unable to create epoll socket.");
hub_free(backend);
return 0;
}
backend->conns = hub_malloc_zero(sizeof(struct net_connection_epoll*) * common->max);
backend->common = common;
net_backend_set_handlers(handler);
return (struct net_backend*) backend;
}
struct auth_info* acl_get_access_info(struct hub_info* hub, const char* name)
{
struct auth_info* info = 0;
#ifdef PLUGIN_SUPPORT
info = (struct auth_info*) hub_malloc(sizeof(struct auth_info));
if (plugin_auth_get_user(hub, name, info) != st_allow)
{
hub_free(info);
return NULL;
}
return info;
#else
info = (struct auth_info*) list_get_first(hub->acl->users);
while (info)
{
if (strcasecmp((char*)info->nickname, name) == 0)
{
return info;
}
info = (struct auth_info*) list_get_next(hub->acl->users);
}
return NULL;
#endif
}
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)
{
return 0;
}
plugin->handle = dlopen(filename, RTLD_LAZY);
if (!plugin->handle)
{
LOG_ERROR("Unable to open plugin %s: %s", filename, dlerror());
hub_free(plugin);
return 0;
}
return plugin;
#else
return 0;
#endif
}
/*
* FIXME: Only works for tiger hash. If a client doesnt support tiger we cannot let it in!
*/
static int check_cid(struct hub_info* hub, struct hub_user* user, struct adc_message* cmd)
{
size_t pos;
char* cid = adc_msg_get_named_argument(cmd, ADC_INF_FLAG_CLIENT_ID);
char* pid = adc_msg_get_named_argument(cmd, ADC_INF_FLAG_PRIVATE_ID);
if (!cid || !pid)
{
hub_free(cid);
hub_free(pid);
return status_msg_error_no_memory;
}
if (strlen(cid) != MAX_CID_LEN)
{
hub_free(cid);
hub_free(pid);
return status_msg_inf_error_cid_invalid;
}
if (strlen(pid) != MAX_CID_LEN)
{
hub_free(cid);
hub_free(pid);
return status_msg_inf_error_pid_invalid;
}
for (pos = 0; pos < MAX_CID_LEN; pos++)
{
if (!is_valid_base32_char(cid[pos]))
{
hub_free(cid);
hub_free(pid);
return status_msg_inf_error_cid_invalid;
}
if (!is_valid_base32_char(pid[pos]))
{
hub_free(cid);
hub_free(pid);
return status_msg_inf_error_pid_invalid;
}
}
if (!check_hash_tiger(cid, pid))
{
hub_free(cid);
hub_free(pid);
return status_msg_inf_error_cid_invalid;
}
/* Set the cid in the user object */
memcpy(user->id.cid, cid, MAX_CID_LEN);
user->id.cid[MAX_CID_LEN] = 0;
hub_free(cid);
hub_free(pid);
return 0;
}
