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@@ -1,474 +0,0 @@
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-/*
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- Copyright (c) 2011, Tony Million.
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- All rights reserved.
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-
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- Redistribution and use in source and binary forms, with or without
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- modification, are permitted provided that the following conditions are met:
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-
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- 1. Redistributions of source code must retain the above copyright notice, this
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- list of conditions and the following disclaimer.
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-
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- 2. Redistributions in binary form must reproduce the above copyright notice,
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- this list of conditions and the following disclaimer in the documentation
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- and/or other materials provided with the distribution.
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-
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- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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- POSSIBILITY OF SUCH DAMAGE.
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- */
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-
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-#import "Reachability.h"
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-
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-#import <sys/socket.h>
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-#import <netinet/in.h>
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-#import <netinet6/in6.h>
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-#import <arpa/inet.h>
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-#import <ifaddrs.h>
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-#import <netdb.h>
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-
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-
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-NSString *const kReachabilityChangedNotification = @"kReachabilityChangedNotification";
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-
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-
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-@interface Reachability ()
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-
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-@property (nonatomic, assign) SCNetworkReachabilityRef reachabilityRef;
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-@property (nonatomic, strong) dispatch_queue_t reachabilitySerialQueue;
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-@property (nonatomic, strong) id reachabilityObject;
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-
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--(void)reachabilityChanged:(SCNetworkReachabilityFlags)flags;
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--(BOOL)isReachableWithFlags:(SCNetworkReachabilityFlags)flags;
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-
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-@end
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-
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-
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-static NSString *reachabilityFlags(SCNetworkReachabilityFlags flags)
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-{
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- return [NSString stringWithFormat:@"%c%c %c%c%c%c%c%c%c",
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-#if TARGET_OS_IPHONE
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- (flags & kSCNetworkReachabilityFlagsIsWWAN) ? 'W' : '-',
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-#else
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- 'X',
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-#endif
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- (flags & kSCNetworkReachabilityFlagsReachable) ? 'R' : '-',
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- (flags & kSCNetworkReachabilityFlagsConnectionRequired) ? 'c' : '-',
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- (flags & kSCNetworkReachabilityFlagsTransientConnection) ? 't' : '-',
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- (flags & kSCNetworkReachabilityFlagsInterventionRequired) ? 'i' : '-',
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- (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) ? 'C' : '-',
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- (flags & kSCNetworkReachabilityFlagsConnectionOnDemand) ? 'D' : '-',
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- (flags & kSCNetworkReachabilityFlagsIsLocalAddress) ? 'l' : '-',
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- (flags & kSCNetworkReachabilityFlagsIsDirect) ? 'd' : '-'];
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-}
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-
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-// Start listening for reachability notifications on the current run loop
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-static void TMReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void* info)
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-{
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-#pragma unused (target)
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-
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- Reachability *reachability = ((__bridge Reachability*)info);
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-
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- // We probably don't need an autoreleasepool here, as GCD docs state each queue has its own autorelease pool,
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- // but what the heck eh?
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- @autoreleasepool
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- {
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- [reachability reachabilityChanged:flags];
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- }
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-}
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-
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-
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-@implementation Reachability
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-
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-#pragma mark - Class Constructor Methods
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-
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-+(instancetype)reachabilityWithHostName:(NSString*)hostname
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-{
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- return [Reachability reachabilityWithHostname:hostname];
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-}
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-
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-+(instancetype)reachabilityWithHostname:(NSString*)hostname
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-{
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- SCNetworkReachabilityRef ref = SCNetworkReachabilityCreateWithName(NULL, [hostname UTF8String]);
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- if (ref)
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- {
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- id reachability = [[self alloc] initWithReachabilityRef:ref];
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-
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- return reachability;
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- }
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-
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- return nil;
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-}
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-
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-+(instancetype)reachabilityWithAddress:(void *)hostAddress
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-{
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- SCNetworkReachabilityRef ref = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, (const struct sockaddr*)hostAddress);
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- if (ref)
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- {
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- id reachability = [[self alloc] initWithReachabilityRef:ref];
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-
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- return reachability;
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- }
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-
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- return nil;
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-}
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-
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-+(instancetype)reachabilityForInternetConnection
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-{
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- struct sockaddr_in zeroAddress;
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- bzero(&zeroAddress, sizeof(zeroAddress));
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- zeroAddress.sin_len = sizeof(zeroAddress);
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- zeroAddress.sin_family = AF_INET;
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-
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- return [self reachabilityWithAddress:&zeroAddress];
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-}
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-
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-+(instancetype)reachabilityForLocalWiFi
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-{
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- struct sockaddr_in localWifiAddress;
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- bzero(&localWifiAddress, sizeof(localWifiAddress));
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- localWifiAddress.sin_len = sizeof(localWifiAddress);
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- localWifiAddress.sin_family = AF_INET;
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- // IN_LINKLOCALNETNUM is defined in <netinet/in.h> as 169.254.0.0
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- localWifiAddress.sin_addr.s_addr = htonl(IN_LINKLOCALNETNUM);
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-
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- return [self reachabilityWithAddress:&localWifiAddress];
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-}
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-
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-
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-// Initialization methods
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-
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--(instancetype)initWithReachabilityRef:(SCNetworkReachabilityRef)ref
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-{
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- self = [super init];
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- if (self != nil)
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- {
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- self.reachableOnWWAN = YES;
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- self.reachabilityRef = ref;
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-
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- // We need to create a serial queue.
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- // We allocate this once for the lifetime of the notifier.
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-
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- self.reachabilitySerialQueue = dispatch_queue_create("com.tonymillion.reachability", NULL);
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- }
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-
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- return self;
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-}
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-
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--(void)dealloc
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-{
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- [self stopNotifier];
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-
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- if(self.reachabilityRef)
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- {
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- CFRelease(self.reachabilityRef);
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- self.reachabilityRef = nil;
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- }
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-
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- self.reachableBlock = nil;
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- self.unreachableBlock = nil;
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- self.reachabilityBlock = nil;
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- self.reachabilitySerialQueue = nil;
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-}
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-
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-#pragma mark - Notifier Methods
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-
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-// Notifier
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-// NOTE: This uses GCD to trigger the blocks - they *WILL NOT* be called on THE MAIN THREAD
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-// - In other words DO NOT DO ANY UI UPDATES IN THE BLOCKS.
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-// INSTEAD USE dispatch_async(dispatch_get_main_queue(), ^{UISTUFF}) (or dispatch_sync if you want)
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-
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--(BOOL)startNotifier
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-{
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- // allow start notifier to be called multiple times
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- if(self.reachabilityObject && (self.reachabilityObject == self))
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- {
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- return YES;
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- }
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-
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-
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- SCNetworkReachabilityContext context = { 0, NULL, NULL, NULL, NULL };
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- context.info = (__bridge void *)self;
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-
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- if(SCNetworkReachabilitySetCallback(self.reachabilityRef, TMReachabilityCallback, &context))
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- {
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- // Set it as our reachability queue, which will retain the queue
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- if(SCNetworkReachabilitySetDispatchQueue(self.reachabilityRef, self.reachabilitySerialQueue))
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- {
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- // this should do a retain on ourself, so as long as we're in notifier mode we shouldn't disappear out from under ourselves
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- // woah
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- self.reachabilityObject = self;
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- return YES;
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- }
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- else
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- {
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-#ifdef DEBUG
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- NSLog(@"SCNetworkReachabilitySetDispatchQueue() failed: %s", SCErrorString(SCError()));
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-#endif
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-
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- // UH OH - FAILURE - stop any callbacks!
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- SCNetworkReachabilitySetCallback(self.reachabilityRef, NULL, NULL);
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- }
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- }
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- else
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- {
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-#ifdef DEBUG
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- NSLog(@"SCNetworkReachabilitySetCallback() failed: %s", SCErrorString(SCError()));
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-#endif
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- }
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-
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- // if we get here we fail at the internet
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- self.reachabilityObject = nil;
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- return NO;
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-}
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-
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--(void)stopNotifier
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-{
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- // First stop, any callbacks!
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- SCNetworkReachabilitySetCallback(self.reachabilityRef, NULL, NULL);
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-
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- // Unregister target from the GCD serial dispatch queue.
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- SCNetworkReachabilitySetDispatchQueue(self.reachabilityRef, NULL);
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-
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- self.reachabilityObject = nil;
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-}
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-
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-#pragma mark - reachability tests
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-
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-// This is for the case where you flick the airplane mode;
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-// you end up getting something like this:
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-//Reachability: WR ct-----
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-//Reachability: -- -------
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-//Reachability: WR ct-----
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-//Reachability: -- -------
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-// We treat this as 4 UNREACHABLE triggers - really apple should do better than this
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-
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-#define testcase (kSCNetworkReachabilityFlagsConnectionRequired | kSCNetworkReachabilityFlagsTransientConnection)
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-
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--(BOOL)isReachableWithFlags:(SCNetworkReachabilityFlags)flags
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-{
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- BOOL connectionUP = YES;
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-
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- if(!(flags & kSCNetworkReachabilityFlagsReachable))
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- connectionUP = NO;
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-
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- if( (flags & testcase) == testcase )
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- connectionUP = NO;
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-
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-#if TARGET_OS_IPHONE
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- if(flags & kSCNetworkReachabilityFlagsIsWWAN)
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- {
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- // We're on 3G.
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- if(!self.reachableOnWWAN)
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- {
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- // We don't want to connect when on 3G.
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- connectionUP = NO;
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- }
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- }
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-#endif
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-
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- return connectionUP;
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-}
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-
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--(BOOL)isReachable
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-{
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- SCNetworkReachabilityFlags flags;
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-
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- if(!SCNetworkReachabilityGetFlags(self.reachabilityRef, &flags))
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- return NO;
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-
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- return [self isReachableWithFlags:flags];
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-}
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-
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--(BOOL)isReachableViaWWAN
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-{
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-#if TARGET_OS_IPHONE
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-
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- SCNetworkReachabilityFlags flags = 0;
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-
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- if(SCNetworkReachabilityGetFlags(self.reachabilityRef, &flags))
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- {
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- // Check we're REACHABLE
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- if(flags & kSCNetworkReachabilityFlagsReachable)
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- {
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- // Now, check we're on WWAN
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- if(flags & kSCNetworkReachabilityFlagsIsWWAN)
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- {
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- return YES;
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- }
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- }
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- }
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-#endif
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-
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- return NO;
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-}
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-
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--(BOOL)isReachableViaWiFi
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-{
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- SCNetworkReachabilityFlags flags = 0;
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-
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- if(SCNetworkReachabilityGetFlags(self.reachabilityRef, &flags))
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- {
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- // Check we're reachable
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- if((flags & kSCNetworkReachabilityFlagsReachable))
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- {
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-#if TARGET_OS_IPHONE
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- // Check we're NOT on WWAN
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- if((flags & kSCNetworkReachabilityFlagsIsWWAN))
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- {
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- return NO;
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- }
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-#endif
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- return YES;
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- }
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- }
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-
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- return NO;
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-}
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-
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-
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-// WWAN may be available, but not active until a connection has been established.
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-// WiFi may require a connection for VPN on Demand.
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--(BOOL)isConnectionRequired
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-{
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- return [self connectionRequired];
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-}
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-
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--(BOOL)connectionRequired
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-{
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- SCNetworkReachabilityFlags flags;
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-
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- if(SCNetworkReachabilityGetFlags(self.reachabilityRef, &flags))
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- {
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- return (flags & kSCNetworkReachabilityFlagsConnectionRequired);
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- }
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-
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- return NO;
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-}
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-
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-// Dynamic, on demand connection?
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--(BOOL)isConnectionOnDemand
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-{
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- SCNetworkReachabilityFlags flags;
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-
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- if (SCNetworkReachabilityGetFlags(self.reachabilityRef, &flags))
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- {
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- return ((flags & kSCNetworkReachabilityFlagsConnectionRequired) &&
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- (flags & (kSCNetworkReachabilityFlagsConnectionOnTraffic | kSCNetworkReachabilityFlagsConnectionOnDemand)));
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- }
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-
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- return NO;
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-}
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-
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-// Is user intervention required?
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--(BOOL)isInterventionRequired
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-{
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- SCNetworkReachabilityFlags flags;
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-
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- if (SCNetworkReachabilityGetFlags(self.reachabilityRef, &flags))
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- {
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- return ((flags & kSCNetworkReachabilityFlagsConnectionRequired) &&
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- (flags & kSCNetworkReachabilityFlagsInterventionRequired));
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- }
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-
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- return NO;
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-}
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-
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-
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-#pragma mark - reachability status stuff
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-
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--(NetworkStatus)currentReachabilityStatus
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-{
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- if([self isReachable])
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- {
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- if([self isReachableViaWiFi])
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- return ReachableViaWiFi;
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-
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-#if TARGET_OS_IPHONE
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- return ReachableViaWWAN;
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-#endif
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- }
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-
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- return NotReachable;
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-}
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-
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--(SCNetworkReachabilityFlags)reachabilityFlags
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-{
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- SCNetworkReachabilityFlags flags = 0;
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-
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- if(SCNetworkReachabilityGetFlags(self.reachabilityRef, &flags))
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- {
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- return flags;
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- }
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-
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- return 0;
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-}
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-
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--(NSString*)currentReachabilityString
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-{
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- NetworkStatus temp = [self currentReachabilityStatus];
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-
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- if(temp == ReachableViaWWAN)
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- {
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- // Updated for the fact that we have CDMA phones now!
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- return NSLocalizedString(@"Cellular", @"");
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- }
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- if (temp == ReachableViaWiFi)
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- {
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- return NSLocalizedString(@"WiFi", @"");
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- }
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-
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- return NSLocalizedString(@"No Connection", @"");
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-}
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-
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--(NSString*)currentReachabilityFlags
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-{
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- return reachabilityFlags([self reachabilityFlags]);
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-}
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-
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-#pragma mark - Callback function calls this method
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-
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--(void)reachabilityChanged:(SCNetworkReachabilityFlags)flags
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-{
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- if([self isReachableWithFlags:flags])
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- {
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- if(self.reachableBlock)
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- {
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- self.reachableBlock(self);
|
|
|
- }
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- if(self.unreachableBlock)
|
|
|
- {
|
|
|
- self.unreachableBlock(self);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if(self.reachabilityBlock)
|
|
|
- {
|
|
|
- self.reachabilityBlock(self, flags);
|
|
|
- }
|
|
|
-
|
|
|
- // this makes sure the change notification happens on the MAIN THREAD
|
|
|
- dispatch_async(dispatch_get_main_queue(), ^{
|
|
|
- [[NSNotificationCenter defaultCenter] postNotificationName:kReachabilityChangedNotification object:self];
|
|
|
- });
|
|
|
-}
|
|
|
-
|
|
|
-#pragma mark - Debug Description
|
|
|
-
|
|
|
-- (NSString *) description
|
|
|
-{
|
|
|
- NSString *description = [NSString stringWithFormat:@"<%@: %#x (%@)>",
|
|
|
- NSStringFromClass([self class]), (unsigned int) self, [self currentReachabilityFlags]];
|
|
|
- return description;
|
|
|
-}
|
|
|
-
|
|
|
-@end
|
marinofaggiana