Obtain the IP address source code of the iPhone.

Source: Internet
Author: User

 

Several methods are defined to obtain the IP address of the iPhone.

Ipadress. h

01.#define MAXADDRS    32   02.extern char *if_names[MAXADDRS];  03.extern char *ip_names[MAXADDRS];  04.extern char *hw_addrs[MAXADDRS];  05.extern unsigned long ip_addrs[MAXADDRS];  06.// Function prototypes   07.void InitAddresses();  08.void FreeAddresses();  09.void GetIPAddresses();  10.void GetHWAddresses();  

IPaddress. c

01.#include <stdio.h>   02.#include <stdlib.h>   03.#include <string.h>   04.#include <unistd.h>   05.#include <sys/ioctl.h>   06.#include <sys/types.h>   07.#include <sys/socket.h>   08.#include <netinet/in.h>   09.#include <netdb.h>   10.#include <arpa/inet.h>   11.#include <sys/sockio.h>   12.#include <net/if.h>   13.#include <errno.h>   14.#include <net/if_dl.h>   15.#include "GetAddresses.h"   16.#define min(a,b)    ((a) < (b) ? (a) : (b))   17.#define max(a,b)    ((a) > (b) ? (a) : (b))   18.#define BUFFERSIZE  4000   19.char *if_names[MAXADDRS];  20.char *ip_names[MAXADDRS];  21.char *hw_addrs[MAXADDRS];  22.unsigned long ip_addrs[MAXADDRS];  23.static int   nextAddr = 0;  24.void InitAddresses()  25.{  26.    int i;  27.    for (i=0; i<MAXADDRS; ++i)  28.    {  29.        if_names[i] = ip_names[i] = hw_addrs[i] = NULL;  30.        ip_addrs[i] = 0;  31.    }  32.}  33.void FreeAddresses()  34.{  35.    int i;  36.    for (i=0; i<MAXADDRS; ++i)  37.    {  38.        if (if_names[i] != 0) free(if_names[i]);  39.        if (ip_names[i] != 0) free(ip_names[i]);  40.        if (hw_addrs[i] != 0) free(hw_addrs[i]);  41.        ip_addrs[i] = 0;  42.    }  43.    InitAddresses();  44.}  45.void GetIPAddresses()  46.{  47.    int                 i, len, flags;  48.    char                buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;  49.    struct ifconf       ifc;  50.    struct ifreq        *ifr, ifrcopy;  51.    struct sockaddr_in  *sin;  52.    char temp[80];  53.    int sockfd;  54.    for (i=0; i<MAXADDRS; ++i)  55.    {  56.        if_names[i] = ip_names[i] = NULL;  57.        ip_addrs[i] = 0;  58.    }  59.    sockfd = socket(AF_INET, SOCK_DGRAM, 0);  60.    if (sockfd < 0)  61.    {  62.        perror("socket failed");  63.        return;  64.    }  65.      66.    ifc.ifc_len = BUFFERSIZE;  67.    ifc.ifc_buf = buffer;  68.      69.    if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0)  70.    {  71.        perror("ioctl error");  72.        return;  73.    }  74.      75.    lastname[0] = 0;  76.      77.    for (ptr = buffer; ptr < buffer + ifc.ifc_len; )  78.    {  79.        ifr = (struct ifreq *)ptr;  80.        len = max(sizeof(struct sockaddr), ifr->ifr_addr.sa_len);  81.        ptr += sizeof(ifr->ifr_name) + len;  // for next one in buffer   82.      83.        if (ifr->ifr_addr.sa_family != AF_INET)  84.        {  85.            continue;   // ignore if not desired address family   86.        }  87.      88.        if ((cptr = (char *)strchr(ifr->ifr_name, ':')) != NULL)  89.        {  90.            *cptr = 0;      // replace colon will null   91.        }  92.      93.        if (strncmp(lastname, ifr->ifr_name, IFNAMSIZ) == 0)  94.        {  95.            continue;   /* already processed this interface */  96.        }  97.      98.        memcpy(lastname, ifr->ifr_name, IFNAMSIZ);  99.      100.        ifrcopy = *ifr;  101.        ioctl(sockfd, SIOCGIFFLAGS, &ifrcopy);  102.        flags = ifrcopy.ifr_flags;  103.        if ((flags & IFF_UP) == 0)  104.        {  105.            continue;   // ignore if interface not up   106.        }  107.      108.        if_names[nextAddr] = (char *)malloc(strlen(ifr->ifr_name)+1);  109.        if (if_names[nextAddr] == NULL)  110.        {  111.            return;  112.        }  113.        strcpy(if_names[nextAddr], ifr->ifr_name);  114.      115.        sin = (struct sockaddr_in *)&ifr->ifr_addr;  116.        strcpy(temp, inet_ntoa(sin->sin_addr));  117.      118.        ip_names[nextAddr] = (char *)malloc(strlen(temp)+1);  119.        if (ip_names[nextAddr] == NULL)  120.        {  121.            return;  122.        }  123.        strcpy(ip_names[nextAddr], temp);  124.        ip_addrs[nextAddr] = sin->sin_addr.s_addr;  125.        ++nextAddr;  126.    }  127.      128.    close(sockfd);  129.}  130.void GetHWAddresses()  131.{  132.   struct ifconf ifc;  133.   struct ifreq *ifr;  134.   int i, sockfd;  135.   char buffer[BUFFERSIZE], *cp, *cplim;  136.   char temp[80];  137.   for (i=0; i<MAXADDRS; ++i)  138.   {  139.      hw_addrs[i] = NULL;  140.   }  141.   sockfd = socket(AF_INET, SOCK_DGRAM, 0);  142.   if (sockfd < 0)  143.   {  144.      perror("socket failed");  145.      return;  146.   }  147.   ifc.ifc_len = BUFFERSIZE;  148.   ifc.ifc_buf = buffer;  149.   if (ioctl(sockfd, SIOCGIFCONF, (char *)&ifc) < 0)  150.   {  151.      perror("ioctl error");  152.      close(sockfd);  153.      return;  154.   }  155.   ifr = ifc.ifc_req;  156.   cplim = buffer + ifc.ifc_len;  157.   for (cp=buffer; cp < cplim; )  158.   {  159.      ifr = (struct ifreq *)cp;  160.      if (ifr->ifr_addr.sa_family == AF_LINK)  161.      {  162.         struct sockaddr_dl *sdl = (struct sockaddr_dl *)&ifr->ifr_addr;  163.         int a,b,c,d,e,f;  164.         int i;  165.         strcpy(temp, (char *)ether_ntoa(LLADDR(sdl)));  166.         sscanf(temp, "%x:%x:%x:%x:%x:%x", &a, &b, &c, &d, &e, &f);  167.         sprintf(temp, "%02X:%02X:%02X:%02X:%02X:%02X",a,b,c,d,e,f);  168.         for (i=0; i<MAXADDRS; ++i)  169.         {  170.            if ((if_names[i] != NULL) && (strcmp(ifr->ifr_name, if_names[i]) == 0))  171.            {  172.               if (hw_addrs[i] == NULL)  173.               {  174.                  hw_addrs[i] = (char *)malloc(strlen(temp)+1);  175.                  strcpy(hw_addrs[i], temp);  176.                  break;  177.               }  178.            }  179.        }  180.      }  181.      cp += sizeof(ifr->ifr_name) + max(sizeof(ifr->ifr_addr), ifr->ifr_addr.sa_len);  182.   }  183.   close(sockfd);  184.}  

In myappappdelegate. H

01.#import <UIKit/UIKit.h>   02.@interface MyAppAppDelegate : NSObject <UIApplicationDelegate> {  03.    NSString *localIP;  04.}  05.@property (nonatomic, retain) NSString *localIP;  06.- (NSString *)deviceIPAdress;  07.@end  

Myappdelegate. m

01.- (void)applicationDidFinishLaunching:(UIApplication *)application {  02.    self.localIP = [self deviceIPAdress];  03.        ...  04.}  05.- (NSString *)deviceIPAdress {  06.    InitAddresses();  07.    GetIPAddresses();  08.    GetHWAddresses();  09.      10.        /*  11.    int i; 12.    NSString *deviceIP; 13.    for (i=0; i<MAXADDRS; ++i) 14.    { 15.        static unsigned long localHost = 0x7F000001;        // 127.0.0.1 16.        unsigned long theAddr; 17.         18.        theAddr = ip_addrs[i]; 19.         20.        if (theAddr == 0) break; 21.        if (theAddr == localHost) continue; 22.         23.        NSLog(@"%s %s %s/n", if_names[i], hw_addrs[i], ip_names[i]); 24.    } 25.    deviceIP = [NSString stringWithFormat:@"%s", ip_names[i]]; 26.    */  27.      28.        //this will get you the right IP from your device in format like 198.111.222.444. If you use the for loop above you will se that ip_names array will also contain localhost IP 127.0.0.1 that's why I don't use it. Eventualy this was code from mac that's why it uses arrays for ip_names as macs can have multiple IPs   29.    return [NSString stringWithFormat:@"%s", ip_names[1]];  30.}  

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.