How we manage to overcome some iOS SDK limitations

1. Breaking the wall
Taras Kalapun

2. DON’T PANIC

3. Google it :)

4. iccoss

5. Certificates switching

6. Certificates switching
H ello!
evice cert
d
ed u sers
allow

7. Certificates switching
H ello!
evice cert
d
ed u sers
allow
Login!
pass for user cert
Hello!
user cert

8. we tried...
• NSURLConnection
• GTMHTTPFetcher
- (BOOL)connection:(NSURLConnection *)connection
canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:
(NSURLAuthenticationChallenge *)challenge
• ASIHTTPRequest
// Will send the certificate attached to the identity (SecIdentityRef)
[request setClientCertificateIdentity:identity];
• Wireshark...
we failed!

9. Hacks that worked

10. • Using IP for first certificate
#include <netdb.h>
#include <arpa/inet.h>
+ (NSString *)hostIPFromHostName:(NSString *)hostName {
struct hostent *host = gethostbyname([hostName UTF8String]);
if (host == NULL) return nil;
struct in_addr **list = (struct in_addr **)host->h_addr_list;
NSString *addressString = [NSString stringWithUTF8String:inet_ntoa(*list[0])];
return addressString;
}
- (NSURL *)URLByUsingIP {
NSString *oldHost = [NSString stringWithFormat:@"%@://%@", [self scheme], [self host]];
NSString *newHost = [NSString stringWithFormat:@"%@://%@", [self scheme], [NSURL
hostIPFromHostName:[self host]]];
NSString *newUrl = [[self absoluteString] stringByReplacingOccurrencesOfString:oldHost
withString:newHost];
return [NSURL URLWithString:newUrl];
}

11. • Adding “.” to the hostname )
http://developer.apple.com/library/ios/#qa/qa1727/
NSString *oldHost = [NSString stringWithFormat:@"%@://%@", [self scheme], [self host]];
NSString *newHost = [NSString stringWithFormat:@"%@://%@.", [self scheme], [self host]];
NSString *newUrl = [[self absoluteString] stringByReplacingOccurrencesOfString:oldHost withString:newHost];
return [NSURL URLWithString:newUrl];

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t;
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13. Testing compatibility
Server/Client
JSON
iOS
JAVA

14. Continuous Integration
+
Unit Testing
• On commit, build Server
• Server generates JSON to text files
• Build Client, test with JSON files

15. #import <OCMock/OCMock.h>
- (void)setUp {
self.dataController = [DataController sharedDataController];
id mock = [OCMockObject partialMockForObject:self.dataController.dataAdapter];
[[[mock stub] andCall:@selector(fakeLoadUsersWithCompletionHandler:)
onObject:self] loadUsersWithCompletionHandler:[OCMArg any]];
}
- (void)testLoadUsers {
[self.dataController loadUsers];
}
#pragma mark - DataControllerDelegate
- (void)dataController:(DataController *)adapter receivedUserList:(NSArray *)userList {
STAssertTrue(([userList count] > 0), @"There should be some user logins");
NSLog(@"receivedUserList: %@", userList);
}
#pragma mark - Fakes
- (void)fakeLoadUsersWithCompletionHandler:(void (^)(NSArray *items, NSError *error))handler {
NSString *filePath = [[NSBundle bundleForClass:[self class]] pathForResource:@"getAllUsersOnDevice"
ofType:@"txt"];
NSString *dataString = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding
error:NULL];
STAssertNotNil(dataString, @"There should be some user list dump");
NSArray *users = [[dataString JSONValue] objectForKey:@"response"];
STAssertTrue(([users count] > 0), @"There should be some users in dump");
handler(users, NULL);
}

16. iTunes
mobileDeviceManager

17. iTunes
mobileDeviceManager

18. • git://github.com/xslim/mobileDeviceManager.git
• http://habrahabr.ru/blogs/macosxdev/113074/
1. Поиск приложения по его идентификатору (необходим
приложению для определения местоположения приложения
и его директорий).
2. Отображение списка всех установленных приложений.
3. Просмотр списка директорий.
4. Просмотр содержания директорий.
5. Копирование файлов с/на устройство.
6. Определение подключено/отключено устройство.
7. Просмотр папки Media и все вложенных в нее папок и
фалов, и некоторые другие.

19. qCar

20. Gauges
&
Skins

22. - (void)layoutSubviews {
...
CGSize bgSize = CGSizeFromString([self.skin objectForKey:@"bgSize"]);
// Calculate aspect for other images
CGFloat aspect = bgSize.width / self.bounds.size.width;
// Background
imSize = bgSize;
imRect.origin = CGPointZero;
imRect.size = CGSizeMake(imSize.width / aspect, imSize.height / aspect);
self.bg.frame = imRect;
// Arrow
imSize = CGSizeFromString([self.skin objectForKey:@"arrowSize"]);
// Calculate arrow position
CGPoint bgAxis = CGPointFromString([self.skin objectForKey:@"bgAxis"]);
CGPoint arrowAxis = CGPointFromString([self.skin objectForKey:@"arrowAxis"]);
imRect.origin = CGPointMake((bgAxis.x - arrowAxis.x)/aspect, (bgAxis.y - arrowAxis.y)/aspect);
imRect.size = CGSizeMake(imSize.width / aspect, imSize.height / aspect);
self.arrow.layer.anchorPoint = CGPointMake(arrowAxis.x/imSize.width, arrowAxis.y/imSize.height);
self.arrow.frame = imRect;

23. - (void)setValue:(float)aValue
{
GaugeView *v = (id)self.view;
float k = (arrowAngleMax - arrowAngleMin) / (scaleMax - scaleMin);
float offset = (0 - scaleMin) / (scaleMax - scaleMin) * (arrowAngleMax - arrowAngleMin);
float deg = k * aValue + offset;
[UIView animateWithDuration:0.2f
delay:0
options:UIViewAnimationOptionAllowUserInteraction
animations:^{
v.arrow.transform = CGAffineTransformMakeRotation(DEGTORAD(deg));
}
completion:nil];
}

24. InfoSuit

25. Table realization

26. - (void)viewDidLoad
{
CGRect tableRect = CGRectMake(0.0f, 0.0f, 800.0f, 320.0f);
UITableView *table = [[UITableView alloc] initWithFrame:tableRect
style:UITableViewStylePlain];
table.backgroundColor = [UIColor scrollViewTexturedBackgroundColor];
table.delegate = self;
table.dataSource = self;
self.tableView = table;
[table release];
self.dataWidths = [self widthForData:self.data];
CGRect svRect = CGRectMake(0.0f, 0.0f, 480.0f, 320.0f);
UIScrollView *sv = [[UIScrollView alloc] initWithFrame:svRect];
sv.backgroundColor = self.tableView.backgroundColor;
//sv.bounces = NO;
sv.contentSize = self.tableView.frame.size;
[sv addSubview:self.tableView];
[self.view addSubview:sv];
[sv release];
}

27. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath
*)indexPath
{
static NSString *CellIdentifier = @"Cell";
ComplexTableViewCell *cell = (id)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[ComplexTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier] autorelease];
cell.dataWidth = self.dataWidths;
}
// Configure the cell...
cell.data = [self.data objectAtIndex:indexPath.row];
return cell;
}

28. - (void)drawRect:(CGRect)rect {
if ([self.dataWidth count] < 1) return;
CGContextRef ctx = UIGraphicsGetCurrentContext();
// Use the same color and width as the default cell separator for now
CGContextSetRGBStrokeColor(ctx, 0.5, 0.5, 0.5, 1.0);
CGContextSetLineWidth(ctx, 0.25);
CGRect sRect = CGRectMake(2.0f, 1.0f, 10.0f, self.bounds.size.height - 2.0f);
UIFont *font = [UIFont systemFontOfSize:14.0f];
int idx = 0;
for (NSString *s in self.data) {
CGFloat sWidth = [[self.dataWidth objectAtIndex:idx] floatValue];
//CGSize sSize = [s sizeWithFont:font];
sRect.size.width = sWidth;
[s drawInRect:sRect withFont:font lineBreakMode:UILineBreakModeTailTruncation];
CGFloat linePoint = sRect.origin.x - 2.0f;
CGContextMoveToPoint(ctx, linePoint, 0);
CGContextAddLineToPoint(ctx, linePoint, self.bounds.size.height);
sRect.origin.x += (sWidth + 4.0f);
idx++;
}
CGContextStrokePath(ctx);
[super drawRect:rect];
}

29. Navigation bar coloring

30. swizzling

31. https://github.com/xslim/tools/tree/master/
UINavigationBar
#include <objc/runtime.h>
#include <objc/message.h>
+ (void)load {
Class class;
Method method;
Method drawRectCustomBackground = class_getInstanceMethod([UINavigationBar class],
@selector(drawRectCustomBackground:));
Method drawRect = class_getInstanceMethod([UINavigationBar class], @selector(drawRect:));
method_exchangeImplementations(drawRect, drawRectCustomBackground);
}

32. thx.
Taras Kalapun
t.kalapun@gmail.com
@xslim

33. http://public.iwork.com/document/?
d=Breaking_the_wall.key&a=p162685331