loudmouth/lm-internals.h
author Frank Zschockelt <lm@freakysoft.de>
Sat, 11 May 2019 22:25:49 +0200
changeset 738 264fece7ff0d
parent 690 7ccf2113ec5f
permissions -rw-r--r--
Fix getaddrinfo() handling in blocking resolver If getaddrinfo() fails, the first call setting the result will already free the resolver. Trying to access it afterwards will lead to a warning to the console from glib. getaddrinfo() shouldn't return NULL for the result list if it returns successful.

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * Copyright (C) 2003 Imendio AB
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, see <https://www.gnu.org/licenses>
 */

/* Private functions that are internal to the library */

#ifndef __LM_INTERNALS_H__
#define __LM_INTERNALS_H__

#include <glib.h>

#include <sys/types.h>

#include "lm-connection.h"
#include "lm-message.h"
#include "lm-message-handler.h"
#include "lm-message-node.h"
#include "lm-sock.h"
#include "lm-old-socket.h"

#define LM_MIN_PORT 1
#define LM_MAX_PORT 65536

#ifndef G_OS_WIN32
typedef int LmOldSocketT;
#else  /* G_OS_WIN32 */
typedef SOCKET LmOldSocketT;
#endif /* G_OS_WIN32 */

typedef struct {
    gpointer       func;
    gpointer       user_data;
    GDestroyNotify notify;
} LmCallback;

typedef struct {
    LmConnection    *connection;
    LmOldSocket        *socket;

    /* struct to save resolved address */
    struct addrinfo *current_addr;
    LmOldSocketT         fd;
    GIOChannel      *io_channel;
} LmConnectData;

GMainContext *   _lm_connection_get_context       (LmConnection       *conn);
/* Need to free the return value */
gchar *          _lm_connection_get_server        (LmConnection       *conn);
gboolean         _lm_old_socket_failed_with_error (LmConnectData         *data,
                                                   int                    error);
gboolean         _lm_old_socket_failed            (LmConnectData         *data);
void             _lm_old_socket_succeeded         (LmConnectData         *data);

LmCallback *     _lm_utils_new_callback       (gpointer               func,
                                               gpointer               data,
                                               GDestroyNotify         notify);
void             _lm_utils_free_callback      (LmCallback            *cb);

gchar *          _lm_utils_generate_id        (void);
gchar *
_lm_utils_hostname_to_punycode                (const gchar           *hostname);
const gchar *    _lm_message_type_to_string   (LmMessageType          type);
const gchar *
_lm_message_sub_type_to_string                (LmMessageSubType       type);
LmMessage *      _lm_message_new_from_node    (LmMessageNode         *node);
void
_lm_message_node_add_child_node               (LmMessageNode         *node,
                                               LmMessageNode         *child);
LmMessageNode *  _lm_message_node_new         (const gchar           *name);
void             _lm_debug_init               (void);
gboolean         _lm_proxy_connect_cb         (GIOChannel            *source,
                                               GIOCondition           condition,
                                               gpointer               data);
LmHandlerResult
_lm_message_handler_handle_message            (LmMessageHandler      *handler,
                                               LmConnection          *conn,
                                               LmMessage             *messag);
gboolean         _lm_sock_library_init        (void);
void             _lm_sock_library_shutdown    (void);
void             _lm_sock_set_blocking        (LmOldSocketT              sock,
                                               gboolean               block);
void             _lm_sock_shutdown            (LmOldSocketT              sock);
void             _lm_sock_close               (LmOldSocketT              sock);
LmOldSocketT         _lm_sock_makesocket         (int                    af,
                                                  int                    type,
                                                  int                    protocol);
int              _lm_sock_connect             (LmOldSocketT              sock,
                                               const struct sockaddr *name,
                                               int                    namelen);
gboolean         _lm_sock_is_blocking_error   (int                    err);
gboolean         _lm_sock_is_blocking_success (int                    err);
int              _lm_sock_get_last_error      (void);
void             _lm_sock_get_error           (LmOldSocketT              sock,
                                               void                  *error,
                                               socklen_t             *len);
const gchar *    _lm_sock_get_error_str       (int                    err);
const gchar *
_lm_sock_addrinfo_get_error_str               (int                    err);
gchar       *    _lm_sock_get_local_host      (LmOldSocketT              sock);

gboolean         _lm_sock_set_keepalive       (LmOldSocketT              sock,
                                               int                    delay);
#endif /* __LM_INTERNALS_H__ */