Using CoreText and touches to create a clickable action

I have some code in a view which draws some attributed text using CoreText. In this, I'm searching for urls and making them blue. The idea is to not bring in all the overhead of a UIWebView just to get clickable links. Once a user taps on that link (not the whole table view cell), I want to fire off a delegate method which will then be used to present a modal view which contains a web view going to that url.

I'm saving the path and the string itself as instance variables of the view, and the drawing code happens in -drawRect: (I've left it out for brevity).

My touch handler however, while incomplete, is not printing what I'd expect it to. It is below:

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint point = [touch locationInView:self];
    CGContextRef context = UIGraphicsGetCurrentContext();

    NSLog(@"attribString = %@", self.attribString);
    CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((CFAttributedStringRef)self.attribString);
    CTFrameRef ctframe = CTFramesetterCreateFrame(framesetter, CFRangeMake(0, self.attribString.length), attribPath, NULL);

    CFArrayRef lines = CTFrameGetLines(ctframe);
    for(CFIndex i = 0; i < CFArrayGetCount(lines); i++)
    {
        CTLineRef line = CFArrayGetValueAtIndex(lines, i);
        CGRect lineBounds = CTLineGetImageBounds(line, context);

        // Check if tap was on our line
        if(CGRectContainsPoint(lineBounds, point))
        {
            NSLog(@"Tapped line");
            CFArrayRef runs = CTLineGetGlyphRuns(line);
            for(CFIndex j = 0; j < CFArrayGetCount(runs); j++)
            {
                CTRunRef run = CFArrayGetValueAtIndex(runs, j);
                CFRange urlStringRange = CTRunGetStringRange(run); 
                CGRect runBounds = CTRunGetImageBounds(run, context, urlStringRange);

                if(CGRectContainsPoin