148 lines
5.6 KiB
Objective-C
148 lines
5.6 KiB
Objective-C
/*
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* Copyright 2019 Google
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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 "FIRInstanceIDTokenStore.h"
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#import "FIRInstanceIDAuthKeyChain.h"
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#import "FIRInstanceIDConstants.h"
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#import "FIRInstanceIDLogger.h"
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#import "FIRInstanceIDTokenInfo.h"
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#import "FIRInstanceIDUtilities.h"
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static NSString *const kFIRInstanceIDTokenKeychainId = @"com.google.iid-tokens";
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@interface FIRInstanceIDTokenStore ()
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@property(nonatomic, readwrite, strong) FIRInstanceIDAuthKeychain *keychain;
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@end
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@implementation FIRInstanceIDTokenStore
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+ (instancetype)defaultStore {
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FIRInstanceIDAuthKeychain *tokenKeychain =
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[[FIRInstanceIDAuthKeychain alloc] initWithIdentifier:kFIRInstanceIDTokenKeychainId];
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return [[FIRInstanceIDTokenStore alloc] initWithKeychain:tokenKeychain];
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}
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- (instancetype)initWithKeychain:(FIRInstanceIDAuthKeychain *)keychain {
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self = [super init];
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if (self) {
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_keychain = keychain;
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}
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return self;
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}
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#pragma mark - Get
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+ (NSString *)serviceKeyForAuthorizedEntity:(NSString *)authorizedEntity scope:(NSString *)scope {
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return [NSString stringWithFormat:@"%@:%@", authorizedEntity, scope];
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}
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- (nullable FIRInstanceIDTokenInfo *)tokenInfoWithAuthorizedEntity:(NSString *)authorizedEntity
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scope:(NSString *)scope {
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NSString *account = FIRInstanceIDAppIdentifier();
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NSString *service = [[self class] serviceKeyForAuthorizedEntity:authorizedEntity scope:scope];
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NSData *item = [self.keychain dataForService:service account:account];
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if (!item) {
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return nil;
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}
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// Token infos created from legacy storage don't have appVersion, firebaseAppID, or APNSInfo.
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FIRInstanceIDTokenInfo *tokenInfo = [[self class] tokenInfoFromKeychainItem:item];
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return tokenInfo;
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}
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- (NSArray<FIRInstanceIDTokenInfo *> *)cachedTokenInfos {
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NSString *account = FIRInstanceIDAppIdentifier();
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NSArray<NSData *> *items =
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[self.keychain itemsMatchingService:kFIRInstanceIDKeychainWildcardIdentifier account:account];
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NSMutableArray<FIRInstanceIDTokenInfo *> *tokenInfos =
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[NSMutableArray arrayWithCapacity:items.count];
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for (NSData *item in items) {
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FIRInstanceIDTokenInfo *tokenInfo = [[self class] tokenInfoFromKeychainItem:item];
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if (tokenInfo) {
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[tokenInfos addObject:tokenInfo];
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}
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}
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return tokenInfos;
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}
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+ (nullable FIRInstanceIDTokenInfo *)tokenInfoFromKeychainItem:(NSData *)item {
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// Check if it is saved as an archived FIRInstanceIDTokenInfo, otherwise return nil.
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FIRInstanceIDTokenInfo *tokenInfo = nil;
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// NOTE: Passing in nil to unarchiveObjectWithData will result in an iOS error logged
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// in the console on iOS 10 and below. Avoid by checking item.data's existence.
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if (item) {
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// TODO(chliangGoogle: Use the new API and secureCoding protocol.
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@try {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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tokenInfo = [NSKeyedUnarchiver unarchiveObjectWithData:item];
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#pragma clang diagnostic pop
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} @catch (NSException *exception) {
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FIRInstanceIDLoggerDebug(kFIRInstanceIDMessageCodeTokenStoreExceptionUnarchivingTokenInfo,
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@"Unable to parse token info from Keychain item; item was in an "
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@"invalid format");
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tokenInfo = nil;
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} @finally {
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}
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}
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return tokenInfo;
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}
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#pragma mark - Save
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// Token Infos will be saved under these Keychain keys:
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// Account: <Main App Bundle ID> (e.g. com.mycompany.myapp)
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// Service: <Sender ID>:<Scope> (e.g. 1234567890:*)
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- (void)saveTokenInfo:(FIRInstanceIDTokenInfo *)tokenInfo
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handler:(void (^)(NSError *))handler { // Keep the cachetime up-to-date.
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tokenInfo.cacheTime = [NSDate date];
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// Always write to the Keychain, so that the cacheTime is up-to-date.
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NSData *tokenInfoData;
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// TODO(chliangGoogle: Use the new API and secureCoding protocol.
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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tokenInfoData = [NSKeyedArchiver archivedDataWithRootObject:tokenInfo];
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#pragma clang diagnostic pop
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NSString *account = FIRInstanceIDAppIdentifier();
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NSString *service = [[self class] serviceKeyForAuthorizedEntity:tokenInfo.authorizedEntity
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scope:tokenInfo.scope];
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[self.keychain setData:tokenInfoData
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forService:service
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accessibility:NULL
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account:account
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handler:handler];
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}
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#pragma mark - Delete
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- (void)removeTokenWithAuthorizedEntity:(nonnull NSString *)authorizedEntity
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scope:(nonnull NSString *)scope {
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NSString *account = FIRInstanceIDAppIdentifier();
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NSString *service = [[self class] serviceKeyForAuthorizedEntity:authorizedEntity scope:scope];
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[self.keychain removeItemsMatchingService:service account:account handler:nil];
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}
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- (void)removeAllTokensWithHandler:(void (^)(NSError *error))handler {
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NSString *account = FIRInstanceIDAppIdentifier();
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[self.keychain removeItemsMatchingService:kFIRInstanceIDKeychainWildcardIdentifier
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account:account
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handler:handler];
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}
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@end
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