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FBSDKDomainHandler.m
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FBSDKDomainHandler.m
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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
* All rights reserved.
*
* This source code is licensed under the license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "FBSDKDomainHandler.h"
#import "FBSDKDomainConfigurationProviding.h"
#import "FBSDKDomainConfigurationManager.h"
#import "FBSDKAuthenticationToken.h"
#import "FBSDKDomainConfiguration+Internal.h"
#import "FBSDKGraphRequest+Internal.h"
@interface FBSDKDomainHandler ()
@property (nullable, nonatomic) id<FBSDKDomainConfigurationProviding> domainConfigurationProvider;
@end
// Domain configuration keys
static NSString *const kAttOptInDomainPrefixKey = @"att_opt_in_domain_prefix";
static NSString *const kAttOptOutDomainPrefixKey = @"att_opt_out_domain_prefix";
static NSString *const kDefaultDomainConfigKey = @"default_config";
static NSString *const kDefaultDomainPrefixKey = @"default_domain_prefix";
static NSString *const kDefaultAlternativeDomainPrefixKey = @"default_alternative_domain_prefix";
static NSString *const kEnableForEarlierVersionsKey = @"enable_for_early_versions";
// Domain prefixes
static NSString *const kEndpoint3URLPrefix = @"graph";
static NSString *const kVideoURLPrefix = @"graph-video";
@implementation FBSDKDomainHandler
- (instancetype)init
{
return [super init];
}
+ (instancetype)sharedInstance
{
static FBSDKDomainHandler *instance = nil;
static dispatch_once_t onceToken = 0;
dispatch_once(&onceToken, ^{
instance = [FBSDKDomainHandler new];
});
return instance;
}
- (void)configureWithGraphRequestFactory:(id<FBSDKDomainConfigurationProviding>)domainConfigurationProvider
settings:(id<FBSDKSettings>)settings
dataStore:(id<FBSDKDataPersisting>)dataStore
graphRequestFactory:(id<FBSDKGraphRequestFactory>)graphRequestFactory
graphRequestConnectionFactory:(id<FBSDKGraphRequestConnectionFactory>)graphRequestConnectionFactory
{
self.domainConfigurationProvider = domainConfigurationProvider;
[self.domainConfigurationProvider configureWithSettings:settings
dataStore:dataStore
graphRequestFactory:graphRequestFactory
graphRequestConnectionFactory:graphRequestConnectionFactory
];
}
- (void)loadDomainConfigurationWithCompletionBlock:(nullable FBSDKDomainConfigurationBlock)completionBlock
{
[self.domainConfigurationProvider loadDomainConfigurationWithCompletionBlock:completionBlock];
}
+ (BOOL)isAuthenticatedForGamingDomain
{
return [FBSDKAuthenticationToken.currentAuthenticationToken respondsToSelector:@selector(graphDomain)]
&& [FBSDKAuthenticationToken.currentAuthenticationToken.graphDomain isEqualToString:@"gaming"];
}
- (BOOL)isGraphVideoRequest:(id<FBSDKGraphRequest>)request
{
NSString *graphPath = [self.class getCleanedGraphPathFromRequest:request];
if ([request.HTTPMethod.uppercaseString isEqualToString:@"POST"] && [graphPath hasSuffix:@"/videos"]) {
NSArray<NSString *> *components = [graphPath componentsSeparatedByString:@"/"];
if (components.count == 2) {
return YES;
}
}
return NO;
}
- (NSString *)getDefaultDomainPrefix:(BOOL)useAlternativeDefaultDomainPrefix
{
NSDictionary *domainConfig = [self.domainConfigurationProvider cachedDomainConfiguration].domainInfo;
NSString *defaultKeyToUse = kDefaultDomainPrefixKey;
if (useAlternativeDefaultDomainPrefix) {
defaultKeyToUse = kDefaultAlternativeDomainPrefixKey;
}
NSString *prefix = [[domainConfig objectForKey:kDefaultDomainConfigKey] objectForKey:defaultKeyToUse];
if (prefix) {
return [NSString stringWithFormat:@"%@.", prefix];
}
return [NSString stringWithFormat:@"%@.", kEndpoint2URLPrefix];
}
- (NSString *)getAttOptInDomainPrefixForEndpoint:(NSString *)endpoint
useAlternativeDefaultDomainPrefix:(BOOL)useAlternativeDefaultDomainPrefix
{
NSDictionary *domainConfig = [self.domainConfigurationProvider cachedDomainConfiguration].domainInfo;
NSString *prefix = [[domainConfig objectForKey:endpoint] objectForKey:kAttOptInDomainPrefixKey];
if (prefix) {
return [NSString stringWithFormat:@"%@.", prefix];
}
return [self getDefaultDomainPrefix:useAlternativeDefaultDomainPrefix];
}
- (NSString *)getAttOptOutDomainPrefixForEndpoint:(NSString *)endpoint
useAlternativeDefaultDomainPrefix:(BOOL)useAlternativeDefaultDomainPrefix
{
NSDictionary *domainConfig = [self.domainConfigurationProvider cachedDomainConfiguration].domainInfo;
NSString *prefix = [[domainConfig objectForKey:endpoint] objectForKey:kAttOptOutDomainPrefixKey];
if (prefix) {
return [NSString stringWithFormat:@"%@.", prefix];
}
return [self getDefaultDomainPrefix:useAlternativeDefaultDomainPrefix];
}
- (nullable NSString *)getATTScopeEndpointForGraphPath:(NSString *)graphPath
{
NSDictionary *domainConfig = [self.domainConfigurationProvider cachedDomainConfiguration].domainInfo;
NSArray<NSString *> *keys = [domainConfig allKeys];
for (NSString *key in keys) {
if ([graphPath hasSuffix:key]) {
return key;
}
}
return nil;
}
- (BOOL)isDomainHandlingEnabled
{
if (@available(iOS 17.0, *)) {
return YES;
}
NSDictionary *domainConfig = [self.domainConfigurationProvider cachedDomainConfiguration].domainInfo;
id enableForEarlierVersions = [[domainConfig objectForKey:kDefaultDomainConfigKey] objectForKey:kEnableForEarlierVersionsKey];
BOOL shouldEnableForEarlierVersions = enableForEarlierVersions ? [enableForEarlierVersions boolValue] : NO;
BOOL isIOS145Available = NO;
if (@available(iOS 14.5, *)) {
isIOS145Available = YES;
}
return (isIOS145Available && shouldEnableForEarlierVersions);
}
+ (NSString *)getCleanedGraphPathFromRequest:(id<FBSDKGraphRequest>)request
{
NSString *graphPath = request.graphPath.lowercaseString;
return [graphPath stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"/"]];
}
- (NSString *)getURLPrefixForSingleRequest:(id<FBSDKGraphRequest>)request
isAdvertiserTrackingEnabled:(BOOL)isATTOptIn
{
// Special case: a graph request for fetching the domain config must use ep2. prefix
if (@available(iOS 14.5, *)) {
if ([FBSDKGraphRequest isForFetchingDomainConfiguration:request]) {
return [NSString stringWithFormat:@"%@.", kEndpoint2URLPrefix];
}
}
// Special case: a graph post to <id>/videos must use graph-video. prefix
if ([self isGraphVideoRequest:request]) {
return [NSString stringWithFormat:@"%@.", kVideoURLPrefix];
}
// Special case: a graph request for gaming domain will always use graph. prefix
if ([FBSDKDomainHandler isAuthenticatedForGamingDomain]) {
return [NSString stringWithFormat:@"%@.", kEndpoint3URLPrefix];
}
if ([self isDomainHandlingEnabled]) {
NSString *graphPath = [self.class getCleanedGraphPathFromRequest:request];
// Special case: a graph request to the /activities endpoint that is not for app events will always use default domain prefix
if ([graphPath hasSuffix:@"activities"] && !request.forAppEvents) {
return [self getDefaultDomainPrefix:request.useAlternativeDefaultDomainPrefix];
}
NSString *attScopeEndpoint = [self getATTScopeEndpointForGraphPath:graphPath];
if (attScopeEndpoint) {
if (isATTOptIn) {
return [self getAttOptInDomainPrefixForEndpoint:attScopeEndpoint
useAlternativeDefaultDomainPrefix:request.useAlternativeDefaultDomainPrefix];
} else {
return [self getAttOptOutDomainPrefixForEndpoint:attScopeEndpoint
useAlternativeDefaultDomainPrefix:request.useAlternativeDefaultDomainPrefix];
}
}
return [self getDefaultDomainPrefix:request.useAlternativeDefaultDomainPrefix];
} else {
// If domain handling is not enabled, we always use graph
return [NSString stringWithFormat:@"%@.", kEndpoint3URLPrefix];
}
}
- (NSString *)getURLPrefixForBatchRequest:(NSArray<FBSDKGraphRequestMetadata *> *)requestsMetaData
isAdvertiserTrackingEnabled:(BOOL)isATTOptIn
{
// Special case: a graph request for gaming domain will always use graph. prefix
if ([FBSDKDomainHandler isAuthenticatedForGamingDomain]) {
return [NSString stringWithFormat:@"%@.", kEndpoint3URLPrefix];
}
if ([self isDomainHandlingEnabled]) {
BOOL useAlternativeDefaultDomainPrefix = YES;
for (FBSDKGraphRequestMetadata *metadata in requestsMetaData) {
// If any request does not use the alternative, the batch does not use the alternative
if (!metadata.request.useAlternativeDefaultDomainPrefix) {
useAlternativeDefaultDomainPrefix = NO;
}
NSString *graphPath = [self.class getCleanedGraphPathFromRequest:metadata.request];
// Special case: a graph request to the /activities endpoint that is not for app events will always use default domain prefix
if ([graphPath hasSuffix:@"activities"] && !metadata.request.forAppEvents) {
continue;
}
NSString *attScopeEndpoint = [self getATTScopeEndpointForGraphPath:graphPath];
if (isATTOptIn && attScopeEndpoint) {
return [self getAttOptInDomainPrefixForEndpoint:attScopeEndpoint
useAlternativeDefaultDomainPrefix:metadata.request.useAlternativeDefaultDomainPrefix];
}
}
return [self getDefaultDomainPrefix:useAlternativeDefaultDomainPrefix];
} else {
// If domain handling is not enabled, we always use graph
return [NSString stringWithFormat:@"%@.", kEndpoint3URLPrefix];
}
}
@end