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Diffstat (limited to 'Firebase/Core/FIRReachabilityChecker.m')
| -rw-r--r-- | Firebase/Core/FIRReachabilityChecker.m | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/Firebase/Core/FIRReachabilityChecker.m b/Firebase/Core/FIRReachabilityChecker.m deleted file mode 100644 index cac87ff..0000000 --- a/Firebase/Core/FIRReachabilityChecker.m +++ /dev/null @@ -1,256 +0,0 @@ -// Copyright 2017 Google -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#import <Foundation/Foundation.h> - -#import "Private/FIRReachabilityChecker+Internal.h" -#import "Private/FIRReachabilityChecker.h" - -#import "Private/FIRLogger.h" -#import "Private/FIRNetwork.h" -#import "Private/FIRNetworkMessageCode.h" - -static void ReachabilityCallback(SCNetworkReachabilityRef reachability, - SCNetworkReachabilityFlags flags, - void *info); - -static const struct FIRReachabilityApi kFIRDefaultReachabilityApi = { - SCNetworkReachabilityCreateWithName, - SCNetworkReachabilitySetCallback, - SCNetworkReachabilityScheduleWithRunLoop, - SCNetworkReachabilityUnscheduleFromRunLoop, - CFRelease, -}; - -static NSString *const kFIRReachabilityUnknownStatus = @"Unknown"; -static NSString *const kFIRReachabilityConnectedStatus = @"Connected"; -static NSString *const kFIRReachabilityDisconnectedStatus = @"Disconnected"; - -@interface FIRReachabilityChecker () - -@property(nonatomic, assign) const struct FIRReachabilityApi *reachabilityApi; -@property(nonatomic, assign) FIRReachabilityStatus reachabilityStatus; -@property(nonatomic, copy) NSString *host; -@property(nonatomic, assign) SCNetworkReachabilityRef reachability; - -@end - -@implementation FIRReachabilityChecker - -@synthesize reachabilityApi = reachabilityApi_; -@synthesize reachability = reachability_; - -- (const struct FIRReachabilityApi *)reachabilityApi { - return reachabilityApi_; -} - -- (void)setReachabilityApi:(const struct FIRReachabilityApi *)reachabilityApi { - if (reachability_) { - NSString *message = - @"Cannot change reachability API while reachability is running. " - @"Call stop first."; - [loggerDelegate_ firNetwork_logWithLevel:kFIRNetworkLogLevelError - messageCode:kFIRNetworkMessageCodeReachabilityChecker000 - message:message]; - return; - } - reachabilityApi_ = reachabilityApi; -} - -@synthesize reachabilityStatus = reachabilityStatus_; -@synthesize host = host_; -@synthesize reachabilityDelegate = reachabilityDelegate_; -@synthesize loggerDelegate = loggerDelegate_; - -- (BOOL)isActive { - return reachability_ != nil; -} - -- (void)setReachabilityDelegate:(id<FIRReachabilityDelegate>)reachabilityDelegate { - if (reachabilityDelegate && - (![(NSObject *)reachabilityDelegate conformsToProtocol:@protocol(FIRReachabilityDelegate)])) { - FIRLogError(kFIRLoggerCore, - [NSString stringWithFormat:@"I-NET%06ld", - (long)kFIRNetworkMessageCodeReachabilityChecker005], - @"Reachability delegate doesn't conform to Reachability protocol."); - return; - } - reachabilityDelegate_ = reachabilityDelegate; -} - -- (void)setLoggerDelegate:(id<FIRNetworkLoggerDelegate>)loggerDelegate { - if (loggerDelegate && - (![(NSObject *)loggerDelegate conformsToProtocol:@protocol(FIRNetworkLoggerDelegate)])) { - FIRLogError(kFIRLoggerCore, - [NSString stringWithFormat:@"I-NET%06ld", - (long)kFIRNetworkMessageCodeReachabilityChecker006], - @"Reachability delegate doesn't conform to Logger protocol."); - return; - } - loggerDelegate_ = loggerDelegate; -} - -- (instancetype)initWithReachabilityDelegate:(id<FIRReachabilityDelegate>)reachabilityDelegate - loggerDelegate:(id<FIRNetworkLoggerDelegate>)loggerDelegate - withHost:(NSString *)host { - self = [super init]; - - [self setLoggerDelegate:loggerDelegate]; - - if (!host || !host.length) { - [loggerDelegate_ firNetwork_logWithLevel:kFIRNetworkLogLevelError - messageCode:kFIRNetworkMessageCodeReachabilityChecker001 - message:@"Invalid host specified"]; - return nil; - } - if (self) { - [self setReachabilityDelegate:reachabilityDelegate]; - reachabilityApi_ = &kFIRDefaultReachabilityApi; - reachabilityStatus_ = kFIRReachabilityUnknown; - host_ = [host copy]; - reachability_ = nil; - } - return self; -} - -- (void)dealloc { - reachabilityDelegate_ = nil; - loggerDelegate_ = nil; - [self stop]; -} - -- (BOOL)start { - if (!reachability_) { - reachability_ = reachabilityApi_->createWithNameFn(kCFAllocatorDefault, [host_ UTF8String]); - if (!reachability_) { - return NO; - } - SCNetworkReachabilityContext context = { - 0, /* version */ - (__bridge void *)(self), /* info (passed as last parameter to reachability callback) */ - NULL, /* retain */ - NULL, /* release */ - NULL /* copyDescription */ - }; - if (!reachabilityApi_->setCallbackFn(reachability_, ReachabilityCallback, &context) || - !reachabilityApi_->scheduleWithRunLoopFn(reachability_, CFRunLoopGetMain(), - kCFRunLoopCommonModes)) { - reachabilityApi_->releaseFn(reachability_); - reachability_ = nil; - [loggerDelegate_ firNetwork_logWithLevel:kFIRNetworkLogLevelError - messageCode:kFIRNetworkMessageCodeReachabilityChecker002 - message:@"Failed to start reachability handle"]; - return NO; - } - } - [loggerDelegate_ firNetwork_logWithLevel:kFIRNetworkLogLevelDebug - messageCode:kFIRNetworkMessageCodeReachabilityChecker003 - message:@"Monitoring the network status"]; - return YES; -} - -- (void)stop { - if (reachability_) { - reachabilityStatus_ = kFIRReachabilityUnknown; - reachabilityApi_->unscheduleFromRunLoopFn(reachability_, CFRunLoopGetMain(), - kCFRunLoopCommonModes); - reachabilityApi_->releaseFn(reachability_); - reachability_ = nil; - } -} - -- (FIRReachabilityStatus)statusForFlags:(SCNetworkReachabilityFlags)flags { - FIRReachabilityStatus status = kFIRReachabilityNotReachable; - // If the Reachable flag is not set, we definitely don't have connectivity. - if (flags & kSCNetworkReachabilityFlagsReachable) { - // Reachable flag is set. Check further flags. - if (!(flags & kSCNetworkReachabilityFlagsConnectionRequired)) { -// Connection required flag is not set, so we have connectivity. -#if TARGET_OS_IOS || TARGET_OS_TV - status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kFIRReachabilityViaCellular - : kFIRReachabilityViaWifi; -#elif TARGET_OS_OSX - status = kFIRReachabilityViaWifi; -#endif - } else if ((flags & (kSCNetworkReachabilityFlagsConnectionOnDemand | - kSCNetworkReachabilityFlagsConnectionOnTraffic)) && - !(flags & kSCNetworkReachabilityFlagsInterventionRequired)) { -// If the connection on demand or connection on traffic flag is set, and user intervention -// is not required, we have connectivity. -#if TARGET_OS_IOS || TARGET_OS_TV - status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kFIRReachabilityViaCellular - : kFIRReachabilityViaWifi; -#elif TARGET_OS_OSX - status = kFIRReachabilityViaWifi; -#endif - } - } - return status; -} - -- (void)reachabilityFlagsChanged:(SCNetworkReachabilityFlags)flags { - FIRReachabilityStatus status = [self statusForFlags:flags]; - if (reachabilityStatus_ != status) { - NSString *reachabilityStatusString; - if (status == kFIRReachabilityUnknown) { - reachabilityStatusString = kFIRReachabilityUnknownStatus; - } else { - reachabilityStatusString = (status == kFIRReachabilityNotReachable) - ? kFIRReachabilityDisconnectedStatus - : kFIRReachabilityConnectedStatus; - } - [loggerDelegate_ firNetwork_logWithLevel:kFIRNetworkLogLevelDebug - messageCode:kFIRNetworkMessageCodeReachabilityChecker004 - message:@"Network status has changed. Code, status" - contexts:@[ @(status), reachabilityStatusString ]]; - reachabilityStatus_ = status; - [reachabilityDelegate_ reachability:self statusChanged:reachabilityStatus_]; - } -} - -@end - -static void ReachabilityCallback(SCNetworkReachabilityRef reachability, - SCNetworkReachabilityFlags flags, - void *info) { - FIRReachabilityChecker *checker = (__bridge FIRReachabilityChecker *)info; - [checker reachabilityFlagsChanged:flags]; -} - -// This function used to be at the top of the file, but it was moved here -// as a workaround for a suspected compiler bug. When compiled in Release mode -// and run on an iOS device with WiFi disabled, the reachability code crashed -// when calling SCNetworkReachabilityScheduleWithRunLoop, or shortly thereafter. -// After unsuccessfully trying to diagnose the cause of the crash, it was -// discovered that moving this function to the end of the file magically fixed -// the crash. If you are going to edit this file, exercise caution and make sure -// to test thoroughly with an iOS device under various network conditions. -const NSString *FIRReachabilityStatusString(FIRReachabilityStatus status) { - switch (status) { - case kFIRReachabilityUnknown: - return @"Reachability Unknown"; - - case kFIRReachabilityNotReachable: - return @"Not reachable"; - - case kFIRReachabilityViaWifi: - return @"Reachable via Wifi"; - - case kFIRReachabilityViaCellular: - return @"Reachable via Cellular Data"; - - default: - return [NSString stringWithFormat:@"Invalid reachability status %d", (int)status]; - } -} |