//

// FreeOTP

//

// Authors: Nathaniel McCallum <npmccallum@redhat.com>

//

// Copyright (C) 2013 Nathaniel McCallum, Red Hat

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

//

#import "QRCodeScanViewController.h"

#include "TokenStore.h"

@interface QRCodeScanViewController ()

@end

@implementation QRCodeScanViewController

- (void)viewDidLoad

{

[super viewDidLoad];

self.session = [[AVCaptureSession alloc] init];

AVCaptureDevice* device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

NSError* error = nil;

AVCaptureDeviceInput* input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];

if (input == nil) {

[self.navigationController popViewControllerAnimated:TRUE];

return;

}

[self.session addInput:input];

AVCaptureVideoPreviewLayer* preview = [[AVCaptureVideoPreviewLayer alloc] initWithSession:self.session];

preview.frame = self.view.layer.bounds;

[self.view.layer addSublayer:preview];

[self.session startRunning];

}

- (void)viewDidAppear:(BOOL)animated

{

/* NOTE: We start output processing in viewDidAppear() to avoid a

* race condition when the QR code is scanned before the view appears. */

AVCaptureMetadataOutput* output = [[AVCaptureMetadataOutput alloc] init];

[self.session addOutput:output];

[output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];

[output setMetadataObjectTypes:@[AVMetadataObjectTypeQRCode]];

}

- (void)captureOutput:(AVCaptureOutput*)captureOutput didOutputMetadataObjects:(NSArray*)metadataObjects fromConnection:(AVCaptureConnection*) connection

{

for (AVMetadataObject *metadata in metadataObjects) {

if ([metadata.type isEqualToString:AVMetadataObjectTypeQRCode]) {

NSString* qrcode = [(AVMetadataMachineReadableCodeObject *)metadata stringValue];

if (qrcode == nil)

continue;

Token* token = [[Token alloc] initWithString:qrcode];

if (token != nil)

[[[TokenStore alloc] init] add:token];

[self.session stopRunning];

if (self.popover == nil)

[self.navigationController popViewControllerAnimated:YES];

else

[self.popover dismissPopoverAnimated:YES];

return;

}

}

}

@end