Struct TKSmartCardToken

Source

pub struct TKSmartCardToken { /* private fields */ }

Available on crate features TKSmartCardToken and TKToken only.

Expand description

TKSmartCardToken base class for implementing SmartCard based token.

When implementing SmartCard token extension, subclass TKSmartCardToken and implement TKTokenDelegate on it.

Implementations§

Source §

impl TKSmartCardToken

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pub unsafe fn initWithSmartCard_AID_instanceID_tokenDriver( this: Allocated<Self>, smart_card: &TKSmartCard, aid: Option<&NSData>, instance_id: &NSString, token_driver: &TKSmartCardTokenDriver, ) -> Retained<Self>

Available on crate feature TKSmartCard only.

Initializes token instance with specified attributes.

Parameter smartCard: TKSmartCard instance representing connection to SmartCard on which the intance should operate.

Parameter AID: ISO7816-4 application ID which is preselected on the card.

Parameter instanceID: Unique, persistent identifier of this token. This is typically implemented by some kind of SmartCard serial number.

Parameter tokenDriver: associated driver which initiated creation of this token.

Source

pub unsafe fn AID(&self) -> Option<Retained<NSData>>

This is AID which is specified in extension’s plist NSExtensionAttributes as com.apple.ctk.aidattribute. If the attribute specifies array of multiple AIDs, this parameter represents AID which was found on the card and is already preselected. If com.apple.ctk.aidis not present, no application is automatically preselected and value of this property is nil.

Source

pub unsafe fn initWithTokenDriver_instanceID( this: Allocated<Self>, token_driver: &TKTokenDriver, instance_id: &NSString, ) -> Retained<Self>

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impl TKSmartCardToken

Methods declared on superclass TKToken.

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pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>

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impl TKSmartCardToken

Methods declared on superclass NSObject.

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pub unsafe fn new() -> Retained<Self>

Methods from Deref<Target = TKToken>§

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pub unsafe fn tokenDriver(&self) -> Retained<TKTokenDriver>

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pub unsafe fn delegate( &self, ) -> Option<Retained<ProtocolObject<dyn TKTokenDelegate>>>

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pub unsafe fn setDelegate( &self, delegate: Option<&ProtocolObject<dyn TKTokenDelegate>>, )

Setter for delegate.

This is a weak property.

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pub unsafe fn configuration(&self) -> Retained<TKTokenConfiguration>

Available on crate feature TKTokenConfiguration only.

Token configuration associated with this token instance.

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pub unsafe fn keychainContents( &self, ) -> Option<Retained<TKTokenKeychainContents>>

Available on crate feature TKTokenKeychainItem only.

Keychain contents (certificate and key items) representing this token.

Methods from Deref<Target = NSObject>§

Source

pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>§

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pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

§Panics

May panic if the object is invalid (which may be the case for objects returned from unavailable init/new methods).

§Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

Source

pub unsafe fn get_ivar<T>(&self, name: &str) -> &T
where T: Encode,

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

§Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

Source

pub fn downcast_ref<T>(&self) -> Option<&T>
where T: DowncastTarget,

Attempt to downcast the object to a class of type T.

This is the reference-variant. Use Retained::downcast if you want to convert a retained object to another type.

§Mutable classes

Some classes have immutable and mutable variants, such as NSString and NSMutableString.

When some Objective-C API signature says it gives you an immutable class, it generally expects you to not mutate that, even though it may technically be mutable “under the hood”.

So using this method to convert a NSString to a NSMutableString, while not unsound, is generally frowned upon unless you created the string yourself, or the API explicitly documents the string to be mutable.

See Apple’s documentation on mutability and on isKindOfClass: for more details.

§Generic classes

Objective-C generics are called “lightweight generics”, and that’s because they aren’t exposed in the runtime. This makes it impossible to safely downcast to generic collections, so this is disallowed by this method.

You can, however, safely downcast to generic collections where all the type-parameters are AnyObject.

§Panics

This works internally by calling isKindOfClass:. That means that the object must have the instance method of that name, and an exception will be thrown (if CoreFoundation is linked) or the process will abort if that is not the case. In the vast majority of cases, you don’t need to worry about this, since both root objects NSObject and NSProxy implement this method.

§Examples

Cast an NSString back and forth from NSObject.

use objc2::rc::Retained;
use objc2_foundation::{NSObject, NSString};

let obj: Retained<NSObject> = NSString::new().into_super();
let string = obj.downcast_ref::<NSString>().unwrap();
// Or with `downcast`, if we do not need the object afterwards
let string = obj.downcast::<NSString>().unwrap();

Try (and fail) to cast an NSObject to an NSString.

use objc2_foundation::{NSObject, NSString};

let obj = NSObject::new();
assert!(obj.downcast_ref::<NSString>().is_none());

Try to cast to an array of strings.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);
// This is invalid and doesn't type check.
let arr = arr.downcast_ref::<NSArray<NSString>>();

This fails to compile, since it would require enumerating over the array to ensure that each element is of the desired type, which is a performance pitfall.

Downcast when processing each element instead.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);

for elem in arr {
    if let Some(data) = elem.downcast_ref::<NSString>() {
        // handle `data`
    }
}