some crazy web view manipulation

webViewManipulation

+ (void)presentCustomizedCalgaryParkingSiteFromViewController:(UIViewController *)viewController {
    
    NSString *registerURL = @"https://www.calgaryparking.com/web/guest/cpa_secure/parkplus?p_p_id=2&p_p_lifecycle=1&p_p_state=maximized&p_p_mode=view&p_p_col_id=column-3&p_p_col_count=3&_2_struts_action=%2Fmy_account%2Fcreate_account";
    
    WebViewController *webViewController = [[WebViewController alloc] initWithURLString:registerURL];
    
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:webViewController];
    
    
    NSString *registerRecognitionSnippet = @"_2_struts_action=%2Fmy_account%2Fcreate_account";
    NSString *registerSuccessRecognitionSnippet = @"p_l_id=";
    NSString *registerSuccessUsernameSnippet = @"login=";    
    NSString *loginPageSnippet = @"https://www.calgaryparking.com/c/portal/change_password";
    
    // give this web view some blocks for handling when the form is submitted and when a url is loaded...
    webViewController.formSubmittedHandler = ^(UIWebView *webView, NSURLRequest *request){
        
        // look for action _2_struts_action
        
        NSString *absoluteString = request.URL.absoluteString;
        //NSString *parameterString = request.URL.parameterString;
        NSString *query = request.URL.query;
        //NSString *data = [[NSString alloc] initWithData:[request HTTPBody] encoding:NSUTF8StringEncoding];
        
        // NSLog(absoluteString);
        // NSLog(parameterString);  
        // NSLog(query);
        // NSLog(data);
        
        // basic registration is being submitted
        if (query && [query rangeOfString:registerRecognitionSnippet].location != NSNotFound) {
            NSString *username = [webView stringByEvaluatingJavaScriptFromString:@"document._2_fm._2_screenName.value"];
            NSLog(@"Registering username: %@", username);
            
            // could also get this from the post data?
        } 
        
        // succeeded in registering - have a temporary password, need to enter it to change to the real password
        
        else if (query && [query rangeOfString:registerSuccessRecognitionSnippet].location != NSNotFound &&
                 [query rangeOfString:registerSuccessUsernameSnippet].location != NSNotFound) {
            
            NSRange loginSnippetRange = [query rangeOfString:registerSuccessUsernameSnippet];
            
            NSString *username = [query substringFromIndex:(loginSnippetRange.location + loginSnippetRange.length)];
            NSLog(@"Registered username: %@", username);
            
            // now that we've registered we need to wait for this page to load and then get our temporary password
            webViewController.finishLoadHandler = ^(UIWebView *webView, NSURLRequest *request) {
                NSString *password = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('tabs1already-registeredTabsSection').getElementsByClassName('portlet-msg-success')[0].getElementsByTagName('b')[0].innerHTML;"]; // this is the temporary password
                
                // NSLog(@"temporary password: %@", password);
                
                // insert the temporary password into the password field
                [webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.getElementById('password').value = '%@';", password]];                
                
                webViewController.finishLoadHandler = nil;
            };
            
            
        } 
        // posting our real password
        else if ([absoluteString isEqualToString:loginPageSnippet] && [request.HTTPMethod isEqualToString:@"POST"]) {
            // check if this wants us to change our password
            
            NSString *passwordSubmissionParameters = [[NSString alloc] initWithData:[request HTTPBody] encoding:NSUTF8StringEncoding];
            
            NSRange password1Range = [passwordSubmissionParameters rangeOfString:@"&password1="];
            NSRange password2Range = [passwordSubmissionParameters rangeOfString:@"&password2="];
            
            if (password1Range.location != NSNotFound && password2Range.location != NSNotFound) {
                NSString *password1 = [passwordSubmissionParameters substringWithRange:NSMakeRange(password1Range.location + password1Range.length, password2Range.location - (password1Range.location + password1Range.length))];
                NSString *password2 = [passwordSubmissionParameters substringFromIndex:password2Range.location + password2Range.length];
                
                if ([password1 isEqualToString:password2]) {
                    NSLog(@"Real password: %@", password1);
                }
            }
        }
//        else {
//            NSLog(@"Unhandled form url: %@", request.URL.absoluteString);
//        }
    };
    
    [viewController presentModalViewController:navController animated:YES];

}