沙盒coreWLAN？

Question

我正在编写一个OS X应用程序,它取决于确定无线信号强度的能力,但我无法弄清楚用于沙箱的权利.

每当我使用

NSMutableArray *scanResults;
CWInterface *currentInterface = [CWInterface interface];
NSLog(@"currInterface: %@\n", currentInterface);
NSMutableDictionary *signalsDict = [[NSMutableDictionary alloc] init];
    NSError *err = nil;
    scanResults = [NSMutableSet setWithSet:[currentInterface scanForNetworksWithSSID:nil error:&err]];

The operation couldn't be completed. (com.apple.coreWLAN.error error 1.)尽管在XCode中检查了所有权利,但我收到了错误.我遗失了哪些权利？

CoreWLANWirelessManager示例项目具有相同的问题.

Answer 1

您可能想通过 dlfcn.h 库来使用 Apple80211 私有框架。可以在此处找到 iPhone 示例：

http://www.csse.uwa.edu.au/~chris/iphone/APlogger/

下载源文件并研究扫描仪模块。

总之，你会想出这样的东西：

#define IF_NAME "en0"
#include <dlfcn.h>

- (void)performScan
{
    int (*open)(void *);
    int (*bind)(void *, NSString *);
    int (*close)(void *);
    int (*scan)(void *, NSArray **, void *);
    void *libHandle;
    void *airportHandle;

    libHandle = dlopen("/System/Library/Frameworks/Preferences.framework/Preferences", RTLD_LAZY);
    open = dlsym(libHandle, "Apple80211Open");
    bind = dlsym(libHandle, "Apple80211BindToInterface");
    scan = dlsym(libHandle, "Apple80211Scan");
    close = dlsym(libHandle, "Apple80211Close");

    open(&airportHandle);
    bind(airportHandle, @IF_NAME);
    NSArray     *found;
    NSDictionary    *params = [[NSDictionary alloc] init];
    scan(airportHandle, &found, params);

    int nnw = [found count];
    for(int i=0 ; i < nnw ; i++) {
        NSDictionary *nw = [found objectAtIndex:i];
        NSString *ssid = [self fixSSID:nw];
        // RSSI indicates signal strength
        int rssi = [[nw objectForKey:@"RSSI"] intValue];
    }
    // Cleanup
    close(airportHandle);
    dlclose(libHandle);
}

-(NSString *)fixSSID:(NSDictionary *)nw
{
    if ([[nw objectForKey:@"HIDDEN_NETWORK"] boolValue])
    return @"<hidden>";
    else
    return [nw objectForKey:@"SSID_STR"];
}

请注意，如果您在 iOS 应用程序中使用私有框架，您将无法在 App Store 上发布它们（Apple 将拒绝您的应用程序，因为没有 Apple80211 框架的公共文档）。但由于您的问题是关于 OSX 开发，因此这不适用于您的情况。

希望能帮助到你。