快速修改SCDynamicStore.h的头文件

Question

我试图在iOS中检测到热点状态。为此，我需要使用SystemConfiguration的API如下

let sc = SCDynamicStoreCreate(nil, "com.apple.wirelessmodemsettings.MISManager" as CFString, nil, nil) 
let info = SCDynamicStoreCopyValue(sc, "com.apple.MobileInternetSharing" as CFString) 

但SCDynamicStoreCreate和SCDynamicStoreCopyValue不支持iOS。我需要修改SCDynamicStore.h文件并使这些功能可用于iOS（它们目前仅标记为仅适用于Mac）。

此链接提到了创建重复标题的方法.. SCDynamicStoreCreate is unavailable: not available on iOS。但是这种方法并不适合我。

这是如何在swift中实现的？

谢谢

Answer 1

有几种方法可以做到这一点。

这是一种全部是Swift并且不涉及修改头文件的方法。

import SystemConfiguration 

    // Define types for each of the calls of interest 
    typealias TSCDynamicStoreCreate = @convention (c) (_ allocator: CFAllocator?, _ name: CFString, _ callout: SystemConfiguration.SCDynamicStoreCallBack?, _ context: UnsafeMutablePointer<SCDynamicStoreContext>?) -> SCDynamicStore? 
    typealias TSCDynamicStoreCopyValue = @convention (c) (_ store: SCDynamicStore?, _ key: CFString) -> CoreFoundation.CFPropertyList? 

    // Get a handle to the library, the flag `RT_NOLOAD` will limit this 
    // to already loaded libraries 
    let hLibrary = dlopen("/System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration", RTLD_NOLOAD); 

    // Load addresses of the functions from the library 
    let MySCDynamicStoreCreate = unsafeBitCast(dlsym(hLibrary, "SCDynamicStoreCreate"), to: TSCDynamicStoreCreate.self) 
    let MySCDynamicStoreCopyValue = unsafeBitCast(dlsym(hLibrary, "SCDynamicStoreCopyValue"), to: TSCDynamicStoreCopyValue.self) 

    // Setup constants 
    let name = "com.apple.wirelessmodemsettings.MISManager" as CFString 
    let key = "com.apple.MobileInternetSharing" as CFString 

    // Call the functions through the looked up addresses 
    let dynamicStore = MySCDynamicStoreCreate(nil, name, nil, nil) 
    let plist = MySCDynamicStoreCopyValue(dynamicStore, key) 
    dump(plist)