///////////////////////////////获取本机IP
#define MAXADDRS 32
extern char *if_names[MAXADDRS];
extern char *ip_names[MAXADDRS];
extern char *hw_addrs[MAXADDRS];
externunsignedlong ip_addrs[MAXADDRS];
// Function prototypes
void InitAddresses);
void FreeAddresses);
void GetIPAddresses);
void GetHWAddresses);
/*
* IPAddress.c
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <errno.h>
#include <net/if_dl.h>
#define mina,b) a) < b) ? a) : b))
#define maxa,b) a) > b) ? a) : b))
#define BUFFERSIZE 4000
char *if_names[MAXADDRS];
char *ip_names[MAXADDRS];
char *hw_addrs[MAXADDRS];
unsigned long ip_addrs[MAXADDRS];
static int nextAddr = 0;
void InitAddresses)
{
int i;
for i=0; i<MAXADDRS; ++i)
{
if_names[i] = ip_names[i] = hw_addrs[i] = NULL;
ip_addrs[i] = 0;
}
}
void FreeAddresses)
{
int i;
for i=0; i<MAXADDRS; ++i)
{
if if_names[i] != 0) freeif_names[i]);
if ip_names[i] != 0) freeip_names[i]);
if hw_addrs[i] != 0) freehw_addrs[i]);
ip_addrs[i] = 0;
}
InitAddresses);
}
void GetIPAddresses)
{
int i, len, flags;
char buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;
struct ifconf ifc;
struct ifreq *ifr, ifrcopy;
struct sockaddr_in *sin;
char temp[80];
int sockfd;
for i=0; i<MAXADDRS; ++i)
{
if_names[i] = ip_names[i] = NULL;
ip_addrs[i] = 0;
}
sockfd = socketAF_INET, SOCK_DGRAM, 0);
if sockfd < 0)
{
perror“socket failed”);
return;
}
ifc.ifc_len = BUFFERSIZE;
ifc.ifc_buf = buffer;
if ioctlsockfd, SIOCGIFCONF, &ifc) < 0)
{
perror“ioctl error”);
return;
}
lastname[0] = 0;
for ptr = buffer; ptr < buffer + ifc.ifc_len; )
{
ifr = struct ifreq *)ptr;
len = maxsizeofstruct sockaddr), ifr->ifr_addr.sa_len);
ptr += sizeofifr->ifr_name) + len; // for next one in buffer
if ifr->ifr_addr.sa_family != AF_INET)
{
continue; // ignore if not desired address family
}
if cptr = char *)strchrifr->ifr_name, ‘:’)) != NULL)
{
*cptr = 0; // replace colon will null
}
if strncmplastname, ifr->ifr_name, IFNAMSIZ) == 0)
{
continue; /* already processed this interface */
}
memcpylastname, ifr->ifr_name, IFNAMSIZ);
ifrcopy = *ifr;
ioctlsockfd, SIOCGIFFLAGS, &ifrcopy);
flags = ifrcopy.ifr_flags;
if flags & IFF_UP) == 0)
{
continue; // ignore if interface not up
}
if_names[nextAddr] = char *)mallocstrlenifr->ifr_name)+1);
if if_names[nextAddr] == NULL)
{
return;
}
strcpyif_names[nextAddr], ifr->ifr_name);
sin = struct sockaddr_in *)&ifr->ifr_addr;
strcpytemp, inet_ntoasin->sin_addr));
ip_names[nextAddr] = char *)mallocstrlentemp)+1);
if ip_names[nextAddr] == NULL)
{
return;
}
strcpyip_names[nextAddr], temp);
ip_addrs[nextAddr] = sin->sin_addr.s_addr;
++nextAddr;
}
closesockfd);
}
void GetHWAddresses)
{
struct ifconf ifc;
struct ifreq *ifr;
int i, sockfd;
char buffer[BUFFERSIZE], *cp, *cplim;
char temp[80];
for i=0; i<MAXADDRS; ++i)
{
hw_addrs[i] = NULL;
}
sockfd = socketAF_INET, SOCK_DGRAM, 0);
if sockfd < 0)
{
perror“socket failed”);
return;
}
ifc.ifc_len = BUFFERSIZE;
ifc.ifc_buf = buffer;
if ioctlsockfd, SIOCGIFCONF, char *)&ifc) < 0)
{
perror“ioctl error”);
closesockfd);
return;
}
ifr = ifc.ifc_req;
cplim = buffer + ifc.ifc_len;
for cp=buffer; cp < cplim; )
{
ifr = struct ifreq *)cp;
if ifr->ifr_addr.sa_family == AF_LINK)
{
struct sockaddr_dl *sdl = struct sockaddr_dl *)&ifr->ifr_addr;
int a,b,c,d,e,f;
int i;
strcpytemp, char *)ether_ntoaLLADDRsdl)));
sscanftemp, “%x:%x:%x:%x:%x:%x”, &a, &b, &c, &d, &e, &f);
sprintftemp, “%02X:%02X:%02X:%02X:%02X:%02X”,a,b,c,d,e,f);
for i=0; i<MAXADDRS; ++i)
{
if if_names[i] != NULL) && strcmpifr->ifr_name,if_names[i]) == 0))
{
if hw_addrs[i] == NULL)
{
hw_addrs[i] = char *)mallocstrlentemp)+1);
strcpyhw_addrs[i], temp);
break;
}
}
}
}
cp += sizeofifr->ifr_name) + maxsizeofifr->ifr_addr), ifr->ifr_addr.sa_len);
}
closesockfd);
}
////////////////////////////////////////////////////////////
– NSString *)deviceIPAdress {
InitAddresses);
GetIPAddresses);
GetHWAddresses);
return [NSStringstringWithFormat:@”%s”, ip_names[1]];
}
– void)viewDidLoad
{
NSString *phoneIP = [self deviceIPAdress];
NSLog”ip = %@”, phoneIP);
}