iphone中扫描wifi热点

最近项目中需要扫描环境周围中的wifi信息，查了一些资料，扫描wifi信息的api是苹果公司的私有api，使用这些api可能导致应用不能上app store或者ios版本升级过程中，可能对私有api不兼容。

关于扫描wifi信息的参考资料：http://code.google.com/p/uwecaugmentedrealityproject/和http://code.google.com/p/iphone-wireless/

下面是我在3gs ios 4.0上测试的结果：

2010-12-26 12:32:58.819 iphone.wifiii[538:307] Scanning WiFi Channels…
2010-12-26 12:32:59.695 iphone.wifiii[538:307] ===–======
( { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "0:21:29:9d:79:d6"; CAPABILITIES = 1041; CHANNEL = 6; "CHANNEL_FLAGS" = 8; IE = <30140100 000fac04 0100000f ac040100 000fac02 0000>; NOISE = 0; RATES =         ( 1, 2, 5, 11, 18, 24, 36, 54, 6, 9, 12, 48 ); "RSN_IE" =         { "IE_KEY_RSN_AUTHSELS" =             ( 2 ); "IE_KEY_RSN_MCIPHER" = 4; "IE_KEY_RSN_UCIPHERS" =             ( 4 ); "IE_KEY_RSN_VERSION" = 1; }; RSSI = "-91"; SSID = <6c696e6b 737973>; "SSID_STR" = linksys; }, { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "0:23:cd:2f:90:fa"; CAPABILITIES = 1073; CHANNEL = 6; "CHANNEL_FLAGS" = 8; NOISE = 0; RATES =         ( 1, 2, 5, 11, 6, 12, 24, 36, 9, 18, 48, 54 ); RSSI = "-88"; SSID = <62656964 6f756172 74>; "SSID_STR" = beidouart; WEP = 1; }, { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "1c:bd:b9:d0:8b:f"; CAPABILITIES = 1041; CHANNEL = 1; "CHANNEL_FLAGS" = 8; IE = <dd180050 f2010100 0050f202 01000050 f2020100 0050f202 0c00>; NOISE = 0; RATES =         ( 1, 2, 5, 11, 18, 24, 36, 54, 6, 9, 12, 48 ); RSSI = "-88"; SSID = <4368696e 614e6574 2d526d66 5a>; "SSID_STR" = "ChinaNet-RmfZ"; "WPA_IE" =         { "IE_KEY_WPA_AUTHSELS" =             ( 2 ); "IE_KEY_WPA_MCIPHER" = 2; "IE_KEY_WPA_UCIPHERS" =             ( 2 ); "IE_KEY_WPA_VERSION" = 1; }; }, { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "94:c:6d:66:8:84"; CAPABILITIES = 1073; CHANNEL = 7; "CHANNEL_FLAGS" = 8; IE = <30140100 000fac04 0100000f ac040100 000fac02 0100dd16 0050f201 01000050 f2040100 0050f204 01000050 f202>; NOISE = 0; RATES =         ( 1, 2, 5, 11, 6, 12, 24, 36, 9, 18, 48, 54 ); "RSN_IE" =         { "IE_KEY_RSN_AUTHSELS" =             ( 2 ); "IE_KEY_RSN_CAPS" =             { "GTKSA_REPLAY_COUNTERS" = 1; "NO_PAIRWISE" = 0; "PRE_AUTH" = 1; "PTKSA_REPLAY_COUNTERS" = 1; }; "IE_KEY_RSN_MCIPHER" = 4; "IE_KEY_RSN_UCIPHERS" =             ( 4 ); "IE_KEY_RSN_VERSION" = 1; }; RSSI = "-73"; SSID = <4850542d 54502d4c 494e4b5f 36363038 3834>; "SSID_STR" = "HPT-TP-LINK_660884"; "WPA_IE" =         { "IE_KEY_WPA_AUTHSELS" =             ( 2 ); "IE_KEY_WPA_MCIPHER" = 4; "IE_KEY_WPA_UCIPHERS" =             ( 4 ); "IE_KEY_WPA_VERSION" = 1; }; }, { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "0:22:b0:b:a4:8f"; CAPABILITIES = 1041; CHANNEL = 11; "CHANNEL_FLAGS" = 8; IE = <dd180050 f2010100 0050f202 01000050 f2020100 0050f202 0000>; NOISE = 0; RATES =         ( 1, 2, 5, 11, 18, 24, 36, 54, 6, 9, 12, 48 ); RSSI = "-73"; SSID = <4368696e 614e6574 2d565350 57454233>; "SSID_STR" = "ChinaNet-VSPWEB3"; "WPA_IE" =         { "IE_KEY_WPA_AUTHSELS" =             ( 2 ); "IE_KEY_WPA_MCIPHER" = 2; "IE_KEY_WPA_UCIPHERS" =             ( 2 ); "IE_KEY_WPA_VERSION" = 1; }; }, { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "8:10:74:62:7f:4"; CAPABILITIES = 1041; CHANNEL = 3; "CHANNEL_FLAGS" = 8; NOISE = 0; RATES =         ( 1, 2, 5, 11, 6, 9, 12, 18, 24, 36, 48, 54 ); RSSI = "-63"; SSID = <56535020 57454220 33>; "SSID_STR" = "VSP WEB 3"; WEP = 1; }, { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "0:24:1:d0:23:f2"; CAPABILITIES = 1073; CHANNEL = 1; "CHANNEL_FLAGS" = 8; NOISE = 0; RATES =         ( 1, 2, 5, 11, 6, 9, 12, 18, 24, 36, 48, 54 ); RSSI = "-60"; SSID = <56535020 57454220 32>; "SSID_STR" = "VSP WEB 2"; WEP = 1; }, { AGE = 0; "AP_MODE" = 2; "BEACON_INT" = 10; BSSID = "0:19:e0:ae:2b:80"; CAPABILITIES = 1073; CHANNEL = 6; "CHANNEL_FLAGS" = 8; NOISE = 0; RATES =         ( 1, 2, 5, 11, 6, 12, 24, 36, 9, 18, 48, 54 ); RSSI = "-57"; SSID = <56535020 574542>; "SSID_STR" = "VSP WEB"; WEP = 1; }
)
2010-12-26 12:32:59.724 iphone.wifiii[538:307] Scanning WiFi Channels Finished.
2010-12-26 12:32:59.729 iphone.wifiii[538:307] —–wifi description———-
Networks State:
VSP WEB 3 (MAC: 8:10:74:62:7f:4), RSSI: -63, Channel: 3
VSP WEB 2 (MAC: 0:24:1:d0:23:f2), RSSI: -60, Channel: 1
ChinaNet-RmfZ (MAC: 1c:bd:b9:d0:8b:f), RSSI: -88, Channel: 1
beidouart (MAC: 0:23:cd:2f:90:fa), RSSI: -88, Channel: 6
ChinaNet-VSPWEB3 (MAC: 0:22:b0:b:a4:8f), RSSI: -73, Channel: 11
linksys (MAC: 0:21:29:9d:79:d6), RSSI: -91, Channel: 6
HPT-TP-LINK_660884 (MAC: 94:c:6d:66:8:84), RSSI: -73, Channel: 7
VSP WEB (MAC: 0:19:e0:ae:2b:80), RSSI: -57, Channel: 6
2010-12-26 12:32:59.735 iphone.wifiii[538:307] —-wifi size ——
8
2010-12-26 12:32:59.739 iphone.wifiii[538:307] ====

正好和我当时的环境的wifi信息一致。

下面是代码实现：

#import <Foundation/Foundation.h>
#import <CoreFoundation/CoreFoundation.h>
#include <dlfcn.h>
@interface SOLStumbler : NSObject { NSMutableDictionary *networks; //Key: MAC Address (BSSID) void *libHandle; void *airportHandle;    int (*apple80211Open)(void *); int (*apple80211Bind)(void *, NSString *); int (*apple80211Close)(void *); int (*associate)(void *, NSDictionary*, NSString*); int (*apple80211Scan)(void *, NSArray **, void *);
}
- (NSDictionary *)networks;                                                             //returns all 802.11 scanned network(s)
- (NSDictionary *)network:(NSString *) BSSID;                   //return specific 802.11 network by BSSID (MAC Address)
- (void)scanNetworks;
- (int)numberOfNetworks;
@end

方法具体实现：

#import "SOLStumbler.h"
@implementation SOLStumbler
- (id)init
{ self = [super init]; networks = [[NSMutableDictionary alloc] init]; libHandle = dlopen("/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager", RTLD_LAZY); char *error; if (libHandle == NULL && (error = dlerror()) != NULL)  { NSLog(@"%c",error); exit(1); } apple80211Open = dlsym(libHandle, "Apple80211Open"); apple80211Bind = dlsym(libHandle, "Apple80211BindToInterface"); apple80211Close = dlsym(libHandle, "Apple80211Close"); apple80211Scan = dlsym(libHandle, "Apple80211Scan"); apple80211Open(&airportHandle); apple80211Bind(airportHandle, @"en0"); return self;
}
- (NSDictionary *)network:(NSString *) BSSID
{ return [networks objectForKey:@"BSSID"];
}
- (NSDictionary *)networks
{ return networks;
}
- (void)scanNetworks
{ NSLog(@"Scanning WiFi Channels…"); NSDictionary *parameters = [[NSDictionary alloc] init]; NSArray *scan_networks; //is a CFArrayRef of CFDictionaryRef(s) containing key/value data on each discovered network apple80211Scan(airportHandle, &scan_networks, parameters); NSLog(@"===–======\n%@",scan_networks); for (int i = 0; i < [scan_networks count]; i++) { [networks setObject:[scan_networks objectAtIndex: i] forKey:[[scan_networks objectAtIndex: i] objectForKey:@"BSSID"]]; } NSLog(@"Scanning WiFi Channels Finished.");
}
- (int)numberOfNetworks
{ return [networks count];
}
- ( NSString * ) description { NSMutableString *result = [[NSMutableString alloc] initWithString:@"Networks State: \n"]; for (id key in networks){ [result appendString:[NSString stringWithFormat:@"%@ (MAC: %@), RSSI: %@, Channel: %@ \n", [[networks objectForKey: key] objectForKey:@"SSID_STR"], //Station Name key, //Station BBSID (MAC Address) [[networks objectForKey: key] objectForKey:@"RSSI"], //Signal Strength[[networks objectForKey: key] objectForKey:@"CHANNEL"]  //Operating Channel
                              ]]; } return [NSString stringWithString:result];
}
- (void) dealloc { apple80211Close(airportHandle); [super dealloc];
}
@end

类的调用：

NSLog(@"——–");
SOLStumbler *networksManager = [[SOLStumbler alloc] init];
[networksManager scanNetworks];
NSLog(@"—–wifi description———-\n%@",[networksManager description]);
NSLog(@"—-wifi size ——\n%d",[networksManager numberOfNetworks]);
NSLog(@"====");

源代码：http://easymorse-iphone.googlecode.com/svn/trunk/iphone.wifiii/

转载于:https://www.cnblogs.com/ligun123/archive/2013/03/05/2944189.html

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