ios扫描公共区域内的全部wifi信息

转自:http://wangjun.easymorse.com/?p=1264

#import <CoreFoundation/CoreFoundation.h> #import <Foundation/NSTimer.h> #import <Foundation/Foundation.h> #include <dlfcn.h> #include <ifaddrs.h> #include <arpa/inet.h> @interface MSNetworksManager : NSObject {    NSMutableDictionary *networks;     NSArray *types;     int autoScanInterval;     bool scanning;     bool autoScanning;     void *libHandle;     void *airportHandle;         int (*open)(void *);     int (*bind)(void *, NSString *);     int (*close)(void *);     int (*associate)(void *, NSDictionary*, NSString*);     int (*scan)(void *, NSArray **, void *);         //int (*open)(void *);     //int (*bind)(void *, NSString *);     //int (*close)(void *);     //int (*scan)(void *, NSArray **, void *);     //int (*associate)(void*, NSDictionary *, NSString *);     int (*getpower)(void *, char *);     int (*setpower)(void*, char*); } + (MSNetworksManager *)sharedNetworksManager; + (NSNumber *)numberFromBSSID:(NSString *) bssid; - (NSMutableDictionary *)networks; - (NSDictionary *)networks:(int) type; - (NSDictionary *)network:(NSString *) aNetwork; - (id)init; - (void)dealloc; - (int)numberOfNetworks; - (int)numberOfNetworks:(int) type; - (int)autoScanInterval; - (void)scan; - (void)removeNetwork:(NSString *)aNetwork; - (void)removeAllNetworks; - (void)removeAllNetworks:(int) type; - (void)autoScan:(bool)scan; - (bool)autoScan; - (void)scanSelector:(id)param; - (void)setAutoScanInterval:(int) scanInterval; - (int)associateNetwork: (NSDictionary *)bss: (NSString *)password; - (int)getPower: (char *)power; - (int)setPower: (char *)power; - (NSString *) localIPAddress;@end  .m文件：#import "MSNetworksManager.h" static MSNetworksManager *NetworksManager;@implementation MSNetworksManager + (MSNetworksManager *)sharedNetworksManager {     if (!NetworksManager)         NetworksManager = [[MSNetworksManager alloc] init];     return NetworksManager; }+ (NSNumber *)numberFromBSSID:(NSString *) bssid {     int x = 0;     uint64_t longmac;     int MAC_LEN = 6;     short unsigned int *bs_in = malloc(sizeof(short unsigned int) * MAC_LEN);     if (sscanf([bssid cStringUsingEncoding: [NSString defaultCStringEncoding]],"%hX:%hX:%hX:%hX:%hX:%hX",&bs_in[0], &bs_in[1], &bs_in[2], &bs_in[3], &bs_in[4], &bs_in[5]) == MAC_LEN)     {         for (x = 0; x < MAC_LEN; x++)             longmac |= (uint64_t) bs_in[x] << ((MAC_LEN – x – 1) * 8);     } else {         NSLog(@"WARN: invalid mac address! %@",self);     }     free(bs_in);     return [NSNumber numberWithUnsignedLongLong:longmac]; }- (NSDictionary *)networks {     // TODO: Implement joining of network types     return networks; } - (NSDictionary *)networks:(int) type {     // TODO: Implement selecting of network types     if(type != 0)         NSLog(@"WARN: Non 80211 networks are not supported. %@",self);     return networks; }- (NSDictionary *)network:(NSString *) aNetwork {     return [networks objectForKey: aNetwork]; }- (id)init {     self = [super init];     NetworksManager = self;     networks = [[NSMutableDictionary alloc] init];     types = [NSArray arrayWithObjects:@"80211", @"Bluetooth", @"GSM", nil];     [types retain];     autoScanInterval = 5; //seconds     // For iPhone 2.0     // libHandle = dlopen("/System/Library/PrivateFrameworks/Apple80211.framework/Apple80211", RTLD_LAZY);     // For iPhone 3.0    libHandle = dlopen("/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager", RTLD_LAZY);     open = dlsym(libHandle, "Apple80211Open");     bind = dlsym(libHandle, "Apple80211BindToInterface");     close = dlsym(libHandle, "Apple80211Close");     scan = dlsym(libHandle, "Apple80211Scan");     associate = dlsym(libHandle, "Apple80211Associate");     getpower = dlsym(libHandle, "Apple80211GetPower");     setpower = dlsym(libHandle, "Apple80211SetPower");         open(&airportHandle);     bind(airportHandle, @"en0");         return self; }- (void)dealloc {     close(&airportHandle);     [super dealloc]; }- (int)numberOfNetworks {     return [networks count]; } - (int)numberOfNetworks:(int) type {     // TODO: Implement selecting of network types     if(type != 0)         NSLog(@"WARN: Non 80211 networks are not supported. %@",self);     return [networks count]; }- (int)autoScanInterval {     return autoScanInterval; }- (void)scan { //    NSLog(@"Scanning…");     scanning = true;     [[NSNotificationCenter defaultCenter] postNotificationName:@"startedScanning" object:self];     NSArray *scan_networks;     NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];     [parameters setObject:@"YES" forKey:@"SCAN_MERGE"];     scan(airportHandle, &scan_networks, parameters);     int i;     //bool changed;     [networks removeAllObjects];     for (i = 0; i < [scan_networks count]; i++) {                 [networks setObject:[[scan_networks objectAtIndex: i] objectForKey:@"BSSID"] forKey:[[scan_networks objectAtIndex: i] objectForKey:@"RSSI"]];         }    NSLog(@"Scan Finished…"); }- (void)removeNetwork:(NSString *)aNetwork {     [networks removeObjectForKey:aNetwork]; }- (void)removeAllNetworks {     [networks removeAllObjects]; }- (void)removeAllNetworks:(int) type {     if(type != 0)         NSLog(@"WARN: Non 80211 networks are not supported. %@",self);     [networks removeAllObjects]; }- (void)autoScan:(bool) bScan {     autoScanning = bScan;     if(bScan) {         [self scan];         [NSTimer scheduledTimerWithTimeInterval:autoScanInterval target:self selector:@selector (scanSelector:) userInfo:nil repeats:NO];     }     NSLog(@"WARN: Automatic scanning not fully supported yet. %@",self); }- (bool)autoScan {     return autoScanning; }- (void)scanSelector:(id)param {     if(autoScanning) {         [self scan];         [NSTimer scheduledTimerWithTimeInterval:autoScanInterval target:self selector:@selector (scanSelector:) userInfo:nil repeats:NO];     } }- (void)setAutoScanInterval:(int) scanInterval {     autoScanInterval = scanInterval; }- (int)associateNetwork:(NSDictionary *)bss: (NSString *)password {     if(bss!=nil) {         NSLog(@"associateNetwork");         int ret = associate(airportHandle, bss, password);         return ret;     }else         return -1; }- (int)getPower: (char *)power {     return getpower(airportHandle, power); }- (int)setPower: (char *)power {     return setpower(airportHandle, power); }- (NSString *) localIPAddress {     NSString *address = @"error";     struct ifaddrs *interfaces = NULL;     struct ifaddrs *temp_addr = NULL;     int success = 0;         // retrieve the current interfaces – returns 0 on success     success = getifaddrs(&interfaces);     if (success == 0)     {         // Loop through linked list of interfaces         temp_addr = interfaces;         while(temp_addr != NULL)         {             if(temp_addr->ifa_addr->sa_family == AF_INET)             {                 // Check if interface is en0 which is the wifi connection on the iPhone                 if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"])                 {                     // Get NSString from C String                     address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];                 }             }                         temp_addr = temp_addr->ifa_next;         }     }         // Free memory     freeifaddrs(interfaces);     return address; }@end 添加到项目中即可。

在ios扫描公共区域内wifi信息中，写了实现wifi扫描的一种方法，但是那种方法扫描出来的wifi信息不全，下面是扫描全部wifi信息的实现方法：