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88 lines
2.1 KiB
Objective-C
88 lines
2.1 KiB
Objective-C
//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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#import "OWSCensorshipConfiguration.h"
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#import "TSStorageManager.h"
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NS_ASSUME_NONNULL_BEGIN
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NSString *const OWSCensorshipConfigurationReflectorHost = @"signal-reflector-meek.appspot.com";
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@implementation OWSCensorshipConfiguration
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- (NSString *)frontingHost:(NSString *)e164PhonNumber
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{
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OWSAssert(e164PhonNumber.length > 0);
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NSString *domain = nil;
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for (NSString *countryCode in self.censoredCountryCodes) {
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if ([e164PhonNumber hasPrefix:countryCode]) {
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domain = self.censoredCountryCodes[countryCode];
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}
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}
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// Fronting should only be auto-activated for countries specified in censoredCountryCodes,
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// all of which have a domain specified. However users can also manually enable
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// censorship circumvention.
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if (!domain) {
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domain = @"google.com";
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}
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return [@"https://" stringByAppendingString:domain];
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}
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- (NSString *)reflectorHost
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{
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return OWSCensorshipConfigurationReflectorHost;
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}
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- (NSDictionary<NSString *, NSString *> *)censoredCountryCodes
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{
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// The set of countries for which domain fronting should be used.
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//
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// For each country, we should add the appropriate google domain,
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// per: https://en.wikipedia.org/wiki/List_of_Google_domains
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//
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// If we ever use any non-google domains for domain fronting,
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// remember to:
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//
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// a) Add the appropriate pinning certificate(s) in
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// SignalServiceKit.podspec.
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// b) Update reflectorHost accordingly.
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return @{
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// Egypt
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@"+20": @"google.com.eg",
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// Oman
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@"+968": @"google.com.om",
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// UAE
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@"+971": @"google.ae",
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};
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}
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- (BOOL)isCensoredPhoneNumber:(NSString *)e164PhonNumber
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{
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for (NSString *countryCode in self.censoredCountryCodes) {
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if ([e164PhonNumber hasPrefix:countryCode]) {
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return YES;
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}
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}
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return NO;
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}
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#pragma mark - Logging
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+ (NSString *)tag
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{
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return [NSString stringWithFormat:@"[%@]", self.class];
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}
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- (NSString *)tag
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{
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return self.class.tag;
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}
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@end
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NS_ASSUME_NONNULL_END
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