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Darcy Liu
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add CryptoExercise
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‎CryptoExercise.zip‎

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‎CryptoExercise/Classes/AppDelegate.h‎

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/*
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File: AppDelegate.h
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Abstract: Main controller that houses the operation queue and
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initializes the LocalBonjour Controller.
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Version: 1.2
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
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("Apple") in consideration of your agreement to the following terms, and your
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use, installation, modification or redistribution of this Apple software
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constitutes acceptance of these terms. If you do not agree with these terms,
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please do not use, install, modify or redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and subject
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to these terms, Apple grants you a personal, non-exclusive license, under
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Apple's copyrights in this original Apple software (the "Apple Software"), to
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use, reproduce, modify and redistribute the Apple Software, with or without
19+
modifications, in source and/or binary forms; provided that if you redistribute
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the Apple Software in its entirety and without modifications, you must retain
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this notice and the following text and disclaimers in all such redistributions
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of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may be used
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to endorse or promote products derived from the Apple Software without specific
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prior written permission from Apple. Except as expressly stated in this notice,
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no other rights or licenses, express or implied, are granted by Apple herein,
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including but not limited to any patent rights that may be infringed by your
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derivative works or by other works in which the Apple Software may be
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incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
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WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR
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DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF
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CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF
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APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2008-2009 Apple Inc. All Rights Reserved.
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*/
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#import <UIKit/UIKit.h>
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@interface AppDelegate : NSObject {
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IBOutlet UIWindow * window;
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IBOutlet UINavigationController * navController;
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NSOperationQueue * cryptoQueue;
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}
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@property (nonatomic, retain) UIWindow * window;
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@property (nonatomic, retain) UINavigationController * navController;
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@property (retain) NSOperationQueue * cryptoQueue;
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@end
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‎CryptoExercise/Classes/AppDelegate.m‎

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/*
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File: AppDelegate.m
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Abstract: Main controller that houses the operation queue and
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initializes the LocalBonjour Controller.
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Version: 1.2
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
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("Apple") in consideration of your agreement to the following terms, and your
11+
use, installation, modification or redistribution of this Apple software
12+
constitutes acceptance of these terms. If you do not agree with these terms,
13+
please do not use, install, modify or redistribute this Apple software.
14+
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In consideration of your agreement to abide by the following terms, and subject
16+
to these terms, Apple grants you a personal, non-exclusive license, under
17+
Apple's copyrights in this original Apple software (the "Apple Software"), to
18+
use, reproduce, modify and redistribute the Apple Software, with or without
19+
modifications, in source and/or binary forms; provided that if you redistribute
20+
the Apple Software in its entirety and without modifications, you must retain
21+
this notice and the following text and disclaimers in all such redistributions
22+
of the Apple Software.
23+
Neither the name, trademarks, service marks or logos of Apple Inc. may be used
24+
to endorse or promote products derived from the Apple Software without specific
25+
prior written permission from Apple. Except as expressly stated in this notice,
26+
no other rights or licenses, express or implied, are granted by Apple herein,
27+
including but not limited to any patent rights that may be infringed by your
28+
derivative works or by other works in which the Apple Software may be
29+
incorporated.
30+
31+
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
32+
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
33+
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
34+
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
35+
COMBINATION WITH YOUR PRODUCTS.
36+
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
38+
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
39+
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40+
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR
41+
DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF
42+
CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF
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APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2008-2009 Apple Inc. All Rights Reserved.
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*/
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#import "AppDelegate.h"
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#import <SystemConfiguration/SystemConfiguration.h>
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#import <netinet/in.h>
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@implementation AppDelegate
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@synthesize window, navController, cryptoQueue;
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- (BOOL)isNetworkAvailableFlags:(SCNetworkReachabilityFlags *)outFlags {
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SCNetworkReachabilityRef defaultRouteReachability;
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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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defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&zeroAddress);
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SCNetworkReachabilityFlags flags;
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BOOL gotFlags = SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags);
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if (!gotFlags) {
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return NO;
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}
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// kSCNetworkReachabilityFlagsReachable indicates that the specified nodename or address can
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// be reached using the current network configuration.
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BOOL isReachable = flags & kSCNetworkReachabilityFlagsReachable;
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// This flag indicates that the specified nodename or address can
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// be reached using the current network configuration, but a
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// connection must first be established.
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//
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// If the flag is false, we don't have a connection. But because CFNetwork
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// automatically attempts to bring up a WWAN connection, if the WWAN reachability
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// flag is present, a connection is not required.
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BOOL noConnectionRequired = !(flags & kSCNetworkReachabilityFlagsConnectionRequired);
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if ((flags & kSCNetworkReachabilityFlagsIsWWAN)) {
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noConnectionRequired = YES;
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}
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// Callers of this method might want to use the reachability flags, so if an 'out' parameter
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// was passed in, assign the reachability flags to it.
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if (outFlags) {
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*outFlags = flags;
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}
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return isReachable && noConnectionRequired;
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}
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- (void)applicationDidFinishLaunching:(UIApplication *)application {
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// Is WiFi network available? That's necessary to use Bonjour.
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if ([self isNetworkAvailableFlags:NULL] == NO) {
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// open an alert with just an OK button
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UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"No WiFi network available."
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message:@"Exit this app and enable WiFi using the Settings application."
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delegate:self
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cancelButtonTitle:@"OK"
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otherButtonTitles: nil];
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[alert show];
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[alert release];
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}
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else {
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// Add the controller's view as a subview of the window
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[self.window addSubview:navController.view];
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NSOperationQueue * theQueue = [[NSOperationQueue alloc] init];
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self.cryptoQueue = theQueue;
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[theQueue release];
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}
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}
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- (void)dealloc {
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[cryptoQueue release];
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[navController release];
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[window release];
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[super dealloc];
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}
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@end

‎CryptoExercise/Classes/CryptoClient.h‎

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/*
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File: CryptoClient.h
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Abstract: Contains the client networking and cryptographic operations. It
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gets invoked by the ServiceController class when the connect button is
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pressed.
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Version: 1.2
9+
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
11+
("Apple") in consideration of your agreement to the following terms, and your
12+
use, installation, modification or redistribution of this Apple software
13+
constitutes acceptance of these terms. If you do not agree with these terms,
14+
please do not use, install, modify or redistribute this Apple software.
15+
16+
In consideration of your agreement to abide by the following terms, and subject
17+
to these terms, Apple grants you a personal, non-exclusive license, under
18+
Apple's copyrights in this original Apple software (the "Apple Software"), to
19+
use, reproduce, modify and redistribute the Apple Software, with or without
20+
modifications, in source and/or binary forms; provided that if you redistribute
21+
the Apple Software in its entirety and without modifications, you must retain
22+
this notice and the following text and disclaimers in all such redistributions
23+
of the Apple Software.
24+
Neither the name, trademarks, service marks or logos of Apple Inc. may be used
25+
to endorse or promote products derived from the Apple Software without specific
26+
prior written permission from Apple. Except as expressly stated in this notice,
27+
no other rights or licenses, express or implied, are granted by Apple herein,
28+
including but not limited to any patent rights that may be infringed by your
29+
derivative works or by other works in which the Apple Software may be
30+
incorporated.
31+
32+
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
33+
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
34+
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
35+
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
36+
COMBINATION WITH YOUR PRODUCTS.
37+
38+
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
39+
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
40+
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41+
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR
42+
DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF
43+
CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF
44+
APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45+
46+
Copyright (C) 2008-2009 Apple Inc. All Rights Reserved.
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*/
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#import <UIKit/UIKit.h>
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@class CryptoClient;
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@protocol CryptoClientDelegate
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- (void)cryptoClientDidCompleteConnection:(CryptoClient *)cryptoClient;
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- (void)cryptoClientDidReceiveError:(CryptoClient *)cryptoClient;
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- (void)cryptoClientWillBeginReceivingData:(CryptoClient *)cryptClient;
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- (void)cryptoClientDidFinishReceivingData:(CryptoClient *)cryptClient;
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- (void)cryptoClientWillBeginVerifyingData:(CryptoClient *)cryptClient;
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- (void)cryptoClientDidFinishVerifyingData:(CryptoClient *)cryptClient verified:(BOOL)verified;
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@end
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@interface CryptoClient : NSObject {
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NSNetService * service;
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NSInputStream * istr;
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NSOutputStream * ostr;
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NSObject <CryptoClientDelegate, NSObject> * delegate;
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BOOL isConnected;
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}
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@property (nonatomic, retain) NSNetService * service;
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@property (nonatomic, assign) NSObject <CryptoClientDelegate, NSObject> * delegate;
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@property (nonatomic, retain) NSInputStream * istr;
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@property (nonatomic, retain) NSOutputStream * ostr;
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@property (nonatomic) BOOL isConnected;
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- (id)initWithService:(NSNetService *)serviceInstance delegate:(NSObject <CryptoClientDelegate, NSObject> *)anObject;
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- (NSData *)receiveData;
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- (NSUInteger)sendData:(NSData *)outData;
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- (void)runConnection;
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- (BOOL)verifyBlob:(NSData *)blob;
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- (void)forwardVerificationToDelegate:(NSNumber *)verified;
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@end

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