[转]取iphone本机ip地址方法(非调用私有api方法)

转自：http://hi.baidu.com/%B0%D9ii%D6%AAi%B5%C0/blog/item/5d4c0a2b284e5fea98250a41.html

手头一个iphone项目需要取iphone本机ip地址,在iphone os 2.0上可以用下面的方法获得:

-(NSString*)getAddress{
chariphone_ip[255];
strcpy(iphone_ip,"127.0.0.1"); // if everything fails
NSHost* myhost = [NSHostcurrentHost];
if(myhost)
{
   NSString *ad = [myhostaddress];
   if(ad)
   strcpy(iphone_ip,[adcStringUsingEncoding: NSISOLatin1StringEncoding]);
}
   return[NSStringstringWithFormat:@"%s",iphone_ip];
}

到3.0这个方法成了苹果私有api了,用了不对不说,error:

warning: no ‘+currentHost’ method found
warning: (Messages without a matching method signature)

,提交的app还被reject:

[NSHost currentHost] will also work, but it is deprecated and considered a “Private API” by Apple, so you won’t be able to submit your application to App Store.

google很久无果;

今天无意发现一个老外的blog贴了方法,试用了下完全OK,要FQ看,转载记录一下.

As far as I know there is only one hacky way to do that. You basically open a socket and get its address using POSIX functions. Here is the code I used for this:

/*
* IPAdress.h
*
*
*/

#defineMAXADDRS 32

externchar *if_names[MAXADDRS];
externchar *ip_names[MAXADDRS];
externchar *hw_addrs[MAXADDRS];
externunsignedlongip_addrs[MAXADDRS];

// Function prototypes

voidInitAddresses();
voidFreeAddresses();
voidGetIPAddresses();
voidGetHWAddresses();

/*
* 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))

#defineBUFFERSIZE 4000

char *if_names[MAXADDRS];
char *ip_names[MAXADDRS];
char *hw_addrs[MAXADDRS];
unsignedlongip_addrs[MAXADDRS];

staticint nextAddr = 0;

voidInitAddresses()
{
   inti;
   for(i=0; i<MAXADDRS; ++i)
   {
   if_names[i] = ip_names[i] = hw_addrs[i] = NULL;
   ip_addrs[i] = 0;
   }
}

voidFreeAddresses()
{
   inti;
   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();
}

voidGetIPAddresses()
{
   int i, len, flags;
   char buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;
   structifconf ifc;
   structifreq *ifr, ifrcopy;
   structsockaddr_in *sin;

   chartemp[80];

   intsockfd;

   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 = (structifreq *)ptr;
   len = max(sizeof(structsockaddr), 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 = (structsockaddr_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);
}

voidGetHWAddresses()
{
   structifconfifc;
   structifreq *ifr;
   inti, sockfd;
   charbuffer[BUFFERSIZE], *cp, *cplim;
   chartemp[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 = (structifreq *)cp;
   if(ifr->ifr_addr.sa_family == AF_LINK)
   {
   structsockaddr_dl *sdl = (structsockaddr_dl *)&ifr->ifr_addr;
   inta,b,c,d,e,f;
   inti;

   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);
}

test:

#import"IPAdress.h"
..........
- (NSString *)deviceIPAdress{
   InitAddresses();
   GetIPAddresses();
   GetHWAddresses();
   return[NSStringstringWithFormat:@"%s", ip_names[1]];
}

- (void)viewDidLoad{
   [superviewDidLoad];

   NSString* ip_iphone = [selfdeviceIPAdress];
   NSLog(@"ip:%@",ip_iphone);
}

原代码地址(需FQ):http://iphonesdksnippets.com/post/2009/09/07/Get-IP-address-of-iPhone.aspx

posted @ 2012-03-16 14:23 K' 阅读(888) 评论(0) 编辑收藏举报

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[转]取iphone本机ip地址方法(非调用私有api方法)

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