ip.h

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#ifndef __IP_H
#define __IP_H
 
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
 
#define MAX_IP_ADDR_LEN 1024
 
void get_local_ip_address(char* ip_addr);
 
void get_remote_ip_address(char* ip_addr);
 
int lookup_address(const char* lookup_addr, char* ip_addr);
 
int is_in_private_network(const char* ip_addr);
 
int is_numeric_address(const char* ip_addr);
 
int is_valid_domain_address(const char* domain_addr);
 
 
 
 
struct addrinfo {
    int              ai_flags;
    int              ai_family;
    int              ai_socktype;
    int              ai_protocol;
    socklen_t        ai_addrlen;
    struct sockaddr* ai_addr;
    char* ai_canonname;
    struct addrinfo* ai_next;
};
 
int getaddrinfo(const char* restrict node,
    const char* restrict service,
    const struct addrinfo* restrict hints,
    struct addrinfo** restrict res);
 
void freeaddrinfo(struct addrinfo* res);
 
const char* gai_strerror(int errcode);
 
#endif // __IP_H