iOS 获取WIFI,IP地址,

男娘i 2022-06-09 02:26 300阅读 0赞

## \[转载\]iOS 获取WIFI,IP地址, ##

(2014-07-21 15:49:46)

![sg_trans.gif][]转载▼

\#include <sys/socket.h> // Per msqr

\#include <sys/sysctl.h>

\#include <net/if.h>

\#include <net/if\_dl.h>

\- (NSString \*) macaddress

int                 mib\[6\];

size\_t              len;

char \*buf;

unsigned char       \*ptr;

struct if\_msghdr    \*ifm;

struct sockaddr\_dl  \*sdl;

mib\[0\] = CTL\_NET;

mib\[1\] = AF\_ROUTE;

mib\[2\] = 0;

mib\[3\] = AF\_LINK;

mib\[4\] = NET\_RT\_IFLIST;

if ((mib\[5\] = if\_nametoindex("en0")) == 0) \{

printf("Error: if\_nametoindex error/n");

return NULL;

if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) \{

printf("Error: sysctl, take 1/n");

return NULL;

if ((buf = malloc(len)) == NULL) \{

printf("Could not allocate memory. error!/n");

return NULL;

if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) \{

printf("Error: sysctl, take 2");

return NULL;

ifm = (struct if\_msghdr \*)buf;

sdl = (struct sockaddr\_dl \*)(ifm + 1);

ptr = (unsigned char \*)LLADDR(sdl);

NSString \*outstring = \[NSString stringWithFormat:@"x:x:x:x:x:x", \*ptr, \*(ptr+1), \*(ptr+2), \*(ptr+3), \*(ptr+4), \*(ptr+5)\];

//NSString \*outstring = \[NSString stringWithFormat:@"xxxxxx", \*ptr, \*(ptr+1), \*(ptr+2), \*(ptr+3), \*(ptr+4), \*(ptr+5)\];

free(buf);

return \[outstring uppercaseString\];

一下代码是获取ip地址等信息

这写头文件是用于获取ip等系列功能的  
\#include <arpa/inet.h>  
\#include <netdb.h>

\#include <net/if.h>

\#include <ifaddrs.h>  
\#import <dlfcn.h>  
\#import "wwanconnect.h//frome apple 你可能没有哦

\#import <SystemConfiguration/SystemConfiguration.h>

获取ip地址的代码有很多

这是外网可见的ip地址，如果你在小区的局域网中，那就是小区的，不是局域网的内网地址。

\- (NSString \*) whatismyipdotcom  
\{  
    NSError \*error;  
    NSURL \*ipURL = \[NSURL URLWithString:@"http://www.whatismyip.com/automation/n09230945.asp"\];  
    NSString \*ip = \[NSString stringWithContentsOfURL:ipURL encoding:1 error:&error\];  
    return ip ? ip : \[error localizedDescription\];  
\}

这是获取本地wifi的ip地址

// Matt Brown's get WiFi IP addy solution  
// Author gave permission to use in Cookbook under cookbook license  
// http://mattbsoftware.blogspot.com/2009/04/how-to-get-ip-address-of-iphone-os-v221.html  
\- (NSString \*) localWiFiIPAddress  
\{  
    BOOL success;  
    struct ifaddrs \* addrs;  
    const struct ifaddrs \* cursor;  
      
    success = getifaddrs(&addrs) == 0;  
    if (success) \{  
        cursor = addrs;  
        while (cursor != NULL) \{  
            // the second test keeps from picking up the loopback address  
            if (cursor->ifa\_addr->sa\_family == AF\_INET && (cursor->ifa\_flags & IFF\_LOOPBACK) == 0)   
            \{  
                NSString \*name = \[NSString stringWithUTF8String:cursor->ifa\_name\];  
                if (\[name isEqualToString:@"en0"\])  // Wi-Fi adapter  
                    return \[NSString stringWithUTF8String:inet\_ntoa(((struct sockaddr\_in \*)cursor->ifa\_addr)->sin\_addr)\];  
            \}  
            cursor = cursor->ifa\_next;  
        \}  
        freeifaddrs(addrs);  
    \}  
    return nil;  
\}

NSString和Address的转换

\+ (NSString \*) stringFromAddress: (const struct sockaddr \*) address  
\{  
    if(address && address->sa\_family == AF\_INET) \{  
        const struct sockaddr\_in\* sin = (struct sockaddr\_in\*) address;  
        return \[NSString stringWithFormat:@"%@:%d", \[NSString stringWithUTF8String:inet\_ntoa(sin->sin\_addr)\], ntohs(sin->sin\_port)\];  
    \}  
      
    return nil;  
\}  
  
\+ (BOOL)addressFromString:(NSString \*)IPAddress address:(struct sockaddr\_in \*)address  
\{  
    if (!IPAddress || !\[IPAddress length\]) \{  
        return NO;  
    \}  
      
    memset((char \*) address, sizeof(struct sockaddr\_in), 0);  
    address->sin\_family = AF\_INET;  
    address->sin\_len = sizeof(struct sockaddr\_in);  
      
    int conversionResult = inet\_aton(\[IPAddress UTF8String\], &address->sin\_addr);  
    if (conversionResult == 0) \{  
        NSAssert1(conversionResult != 1, @"Failed to convert the IP address string into a sockaddr\_in: %@", IPAddress);  
        return NO;  
    \}  
      
    return YES;  
\}  
获取host的名称  
\- (NSString \*) hostname  
\{  
    char baseHostName\[256\]; // Thanks, Gunnar Larisch  
    int success = gethostname(baseHostName, 255);  
    if (success != 0) return nil;  
    baseHostName\[255\] = '/0';  
      
\#if TARGET\_IPHONE\_SIMULATOR  
     return \[NSString stringWithFormat:@"%s", baseHostName\];  
\#else  
    return \[NSString stringWithFormat:@"%s.local", baseHostName\];  
\#endif  
\}  
从host获取地址  
\- (NSString \*) getIPAddressForHost: (NSString \*) theHost  
\{  
    struct hostent \*host = gethostbyname(\[theHost UTF8String\]);  
    if (!host) \{herror("resolv"); return NULL; \}  
    struct in\_addr \*\*list = (struct in\_addr \*\*)host->h\_addr\_list;  
    NSString \*addressString = \[NSString stringWithCString:inet\_ntoa(\*list\[0\]) encoding:NSUTF8StringEncoding\];  
    return addressString;  
\}

这是本地host的IP地址  
\- (NSString \*) localIPAddress  
\{  
    struct hostent \*host = gethostbyname(\[\[self hostname\] UTF8String\]);  
    if (!host) \{herror("resolv"); return nil;\}  
    struct in\_addr \*\*list = (struct in\_addr \*\*)host->h\_addr\_list;  
    return \[NSString stringWithCString:inet\_ntoa(\*list\[0\]) encoding:NSUTF8StringEncoding\];  
\}

http://blog.csdn.net/doubleuto/article/details/6599516

http://blog.csdn.net/ArthurChenJS/article/details/6358489

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