mirror of
https://github.com/google/app-check
synced 2026-11-10 22:05:53 +05:45
92 lines
2.7 KiB
Objective-C
92 lines
2.7 KiB
Objective-C
/*
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* Copyright 2021 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "AppCheckCore/Sources/Core/TokenRefresh/GACAppCheckTimer.h"
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NS_ASSUME_NONNULL_BEGIN
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@interface GACAppCheckTimer ()
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@property(nonatomic, readonly) dispatch_queue_t dispatchQueue;
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@property(atomic, readonly) dispatch_source_t timer;
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@end
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@implementation GACAppCheckTimer
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+ (GACTimerProvider)timerProvider {
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return ^id<GACAppCheckTimerProtocol> _Nullable(NSDate *fireDate, dispatch_queue_t queue,
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dispatch_block_t handler) {
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return [[GACAppCheckTimer alloc] initWithFireDate:fireDate dispatchQueue:queue block:handler];
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};
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}
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+ (nullable instancetype)timerFireDate:(NSDate *)fireDate
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dispatchQueue:(dispatch_queue_t)dispatchQueue
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block:(dispatch_block_t)block {
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return [[GACAppCheckTimer alloc] initWithFireDate:fireDate
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dispatchQueue:dispatchQueue
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block:block];
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}
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- (nullable instancetype)initWithFireDate:(NSDate *)date
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dispatchQueue:(dispatch_queue_t)dispatchQueue
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block:(dispatch_block_t)block {
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self = [super init];
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if (self == nil) {
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return nil;
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}
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if (block == nil) {
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return nil;
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}
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NSTimeInterval scheduleInSec = [date timeIntervalSinceNow];
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if (scheduleInSec <= 0) {
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return nil;
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}
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dispatch_time_t startTime = dispatch_time(DISPATCH_TIME_NOW, scheduleInSec * NSEC_PER_SEC);
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_timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, self.dispatchQueue);
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dispatch_source_set_timer(_timer, startTime, UINT64_MAX * NSEC_PER_SEC, 0);
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__auto_type __weak weakSelf = self;
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dispatch_source_set_event_handler(_timer, ^{
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__auto_type strongSelf = weakSelf;
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// The initializer returns a one-off timer, so we need to invalidate the dispatch timer to
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// prevent firing again.
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[strongSelf invalidate];
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block();
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});
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dispatch_resume(_timer);
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return self;
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}
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- (void)dealloc {
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[self invalidate];
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}
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- (void)invalidate {
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if (self.timer != nil) {
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dispatch_source_cancel(self.timer);
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}
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}
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@end
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NS_ASSUME_NONNULL_END
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