* Copyright (c) Huawei Technologies Co., Ltd. 2026. All rights reserved.
*/
#ifndef HOST_SERVER_IP_H
#define HOST_SERVER_IP_H
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/socket.h>
#include <netdb.h>
#include <ifaddrs.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <unistd.h>
#include <errno.h>
#ifdef __cplusplus
extern "C" {
#endif
* @brief Retrieve the first nonloopback IPv4 address.
* @return On success, a dynamically allocated string containing the address;
* on failure, NULL.
* @note The caller is responsible for freeing the returned string.
*/
char* get_local_ipv4(void);
* @brief Get the IP address associated with a specific network interface.
* @param ifname Interface name (e.g., "eth0").
* @return On success, a dynamically allocated string containing the address;
* on failure, NULL.
* @note The caller is responsible for freeing the returned string.
*/
char* get_interface_ip(const char* ifname);
* @brief Read the IP address from a configuration file.
* @param ifname Interface name.
* @return On success, a dynamically allocated string containing the address;
* on failure, NULL.
*/
char* get_ip_from_config(const char* ifname);
* @brief Obtain the IP address using ioctl.
* @param ifname Interface name.
* @return On success, a dynamically allocated string containing the address;
* on failure, NULL.
*/
char* get_ip_by_ioctl(const char* ifname);
#ifdef __cplusplus
}
#endif
#endif
