iPhone设备当前IP和SSID的获取

#import <Foundation/Foundation.h>

typedef void(^Complation)(NSString *res);

@interface WIFIManager : NSObject

＋ (WIFIManager* )shareSington ;

- (void)localWIFIName:(Complation) complation;

- (void)localWiFiIPAddress:(Complation) complation;

@end

// 实现

#import "WIFIManager.h"

#import <SystemConfiguration/CaptiveNetwork.h>

#include <arpa/inet.h>

#include <netdb.h>

#include <net/if.h>

#include <ifaddrs.h>

#import <dlfcn.h>

@implementation WIFIManager

+ (WIFIManager *)sharedInstance

{

static WIFIManager* manager = nil;

static dispatch_once_t once ;

dispatch_once(&once, ^{

manager = [[WIFIManager alloc] init];

});

return manager ;

}

- (void)localWIFIName:(Complation)complation

{

dispatch_queue_t queue=dispatch_queue_create("WIFI_NAME", NULL);

dispatch_async(queue, ^{

id obj = [self fetchSSIDInfo];

dispatch_async(dispatch_get_main_queue(), ^{

if ([obj isKindOfClass:[NSDictionary class]]) {

NSDictionary *dic = obj;

complation([dic objectForKey:@"SSID"]);

}else

{

complation(nil);

}

});

});

}

- (void)localWiFiIPAddress:(Complation)complation

{

dispatch_queue_t queue=dispatch_queue_create("WIFI_IP", NULL);

dispatch_async(queue, ^{

NSString *ip = [self localWiFiIPAddress];

dispatch_async(dispatch_get_main_queue(), ^{

complation(ip);

});

});

}

- (NSString *)localWiFiIPAddress

{

BOOL success;

struct ifaddrs * addrs;

const struct ifaddrs * cursor;

success = getifaddrs(&addrs) == 0;

if (success) {

cursor = addrs;

while (cursor != NULL) {

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;

}

- (id)fetchSSIDInfo {

NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();

id info = nil;

for (NSString *ifnam in ifs) {

info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);

if (info && [info count]) { break; }

}

return info;

}

@end