///////////////////////////////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 min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,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) free(if_names[i]);
if (ip_names[i] !=
0) free(ip_names[i]);
if (hw_addrs[i] !=
0) free(hw_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 = socket(AF_INET,
SOCK_DGRAM, 0);
if (sockfd < 0)
{
perror("socket failed");
return;
}
ifc.ifc_len = BUFFERSIZE;
ifc.ifc_buf = buffer;
if (ioctl(sockfd,
SIOCGIFCONF, &ifc) < 0)
{
perror("ioctl error");
return;
}
lastname[0] = 0;
for (ptr = buffer; ptr < buffer +
ifc.ifc_len; )
{
ifr = (struct ifreq
*)ptr;
len =
max(sizeof(struct sockaddr),
ifr->ifr_addr.sa_len);
ptr +=
sizeof(ifr->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
*)strchr(ifr->ifr_name, ‘:‘)) !=
NULL)
{
*cptr = 0;
// replace colon will null
}
if (strncmp(lastname,
ifr->ifr_name, IFNAMSIZ) == 0)
{
continue; /* already processed
this interface */
}
memcpy(lastname,
ifr->ifr_name, IFNAMSIZ);
ifrcopy = *ifr;
ioctl(sockfd,
SIOCGIFFLAGS, &ifrcopy);
flags = ifrcopy.ifr_flags;
if ((flags &
IFF_UP) == 0)
{
continue; // ignore if interface
not up
}
if_names[nextAddr] =
(char
*)malloc(strlen(ifr->ifr_name)+1);
if
(if_names[nextAddr] == NULL)
{
return;
}
strcpy(if_names[nextAddr],
ifr->ifr_name);
sin = (struct
sockaddr_in *)&ifr->ifr_addr;
strcpy(temp,
inet_ntoa(sin->sin_addr));
ip_names[nextAddr] =
(char
*)malloc(strlen(temp)+1);
if
(ip_names[nextAddr] == NULL)
{
return;
}
strcpy(ip_names[nextAddr], temp);
ip_addrs[nextAddr] =
sin->sin_addr.s_addr;
++nextAddr;
}
close(sockfd);
}
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 = socket(AF_INET,
SOCK_DGRAM, 0);
if (sockfd < 0)
{
perror("socket failed");
return;
}
ifc.ifc_len = BUFFERSIZE;
ifc.ifc_buf = buffer;
if (ioctl(sockfd,
SIOCGIFCONF, (char *)&ifc) <
0)
{
perror("ioctl error");
close(sockfd);
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;
strcpy(temp,
(char *)ether_ntoa(LLADDR(sdl)));
sscanf(temp,
"%x:%x:%x:%x:%x:%x", &a, &b, &c, &d, &e,
&f);
sprintf(temp,
"%02X:%02X:%02X:%02X:%02X:%02X",a,b,c,d,e,f);
for (i=0;
i<MAXADDRS; ++i)
{
if
((if_names[i] != NULL) &&
(strcmp(ifr->ifr_name,if_names[i]) ==
0))
{
if (hw_addrs[i] == NULL)
{
hw_addrs[i] = (char
*)malloc(strlen(temp)+1);
strcpy(hw_addrs[i], temp);
break;
}
}
}
}
cp +=
sizeof(ifr->ifr_name) +
max(sizeof(ifr->ifr_addr),
ifr->ifr_addr.sa_len);
}
close(sockfd);
}
////////////////////////////////////////////////////////////
- (NSString *)deviceIPAdress {
InitAddresses();
GetIPAddresses();
GetHWAddresses();
return
[NSStringstringWithFormat:@"%s",
ip_names[1]];
}
- (void)viewDidLoad
{
NSString *phoneIP = [self deviceIPAdress];
NSLog("ip = %@", phoneIP);
}
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