不调用苹果似有API也能获取 iPhone 本机 IP 地址的

在 OS 2.0 时代，我们可以使用以下方法获得 iPhone 的 IP 地址 NSString *ad = [myhost address]; if (ad) strcpy(iphone_ip,[ad cStringUsingEncoding: NSISOLatin1StringEncoding]); } return [NSString stringWithFormat:@%s,iphone_ip

在 OS 2.0 时代，我们可以使用以下方法获得 iPhone 的 IP 地址

NSString *ad = [myhost address];

if (ad)

strcpy(iphone_ip,[ad cStringUsingEncoding: NSISOLatin1StringEncoding]);

}

return [NSString stringWithFormat:@"%s",iphone_ip];

}

但是到了 OS 3.0，苹果将 IP 查询 API 设成了私有的，你要是还用上述方法，会因为使用苹果私有 API 而审核被拒。

下面是不使用苹果私有 API 获得 iPhone IP 地址的代码

/*

* IPAdress.h

*

*

*/

#define MAXADDRS 32

extern char *if_names[MAXADDRS];

extern char *ip_names[MAXADDRS];

extern char *hw_addrs[MAXADDRS];

extern unsigned long ip_addrs[MAXADDRS];

// Function prototypes

void InitAddresses();

void FreeAddresses();

void GetIPAddresses();

void GetHWAddresses();

/*

* IPAddress.c

*

*/

#include "IPAddress.h"

#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)