Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\Validator\Constraints;
Chris@0: 
Chris@0: use Symfony\Component\Validator\Constraint;
Chris@0: use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
Chris@0: use Symfony\Component\Validator\Exception\RuntimeException;
Chris@0: use Symfony\Component\Validator\Exception\UnexpectedTypeException;
Chris@0: 
Chris@0: /**
Chris@0:  * Validates whether a value is a valid image file and is valid
Chris@0:  * against minWidth, maxWidth, minHeight and maxHeight constraints.
Chris@0:  *
Chris@0:  * @author Benjamin Dulau <benjamin.dulau@gmail.com>
Chris@0:  * @author Bernhard Schussek <bschussek@gmail.com>
Chris@0:  */
Chris@0: class ImageValidator extends FileValidator
Chris@0: {
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function validate($value, Constraint $constraint)
Chris@0:     {
Chris@0:         if (!$constraint instanceof Image) {
Chris@0:             throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Image');
Chris@0:         }
Chris@0: 
Chris@17:         $violations = \count($this->context->getViolations());
Chris@0: 
Chris@0:         parent::validate($value, $constraint);
Chris@0: 
Chris@17:         $failed = \count($this->context->getViolations()) !== $violations;
Chris@0: 
Chris@0:         if ($failed || null === $value || '' === $value) {
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@0:         if (null === $constraint->minWidth && null === $constraint->maxWidth
Chris@0:             && null === $constraint->minHeight && null === $constraint->maxHeight
Chris@14:             && null === $constraint->minPixels && null === $constraint->maxPixels
Chris@0:             && null === $constraint->minRatio && null === $constraint->maxRatio
Chris@0:             && $constraint->allowSquare && $constraint->allowLandscape && $constraint->allowPortrait
Chris@0:             && !$constraint->detectCorrupted) {
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@0:         $size = @getimagesize($value);
Chris@0: 
Chris@14:         if (empty($size) || (0 === $size[0]) || (0 === $size[1])) {
Chris@0:             $this->context->buildViolation($constraint->sizeNotDetectedMessage)
Chris@0:                 ->setCode(Image::SIZE_NOT_DETECTED_ERROR)
Chris@0:                 ->addViolation();
Chris@0: 
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@0:         $width = $size[0];
Chris@0:         $height = $size[1];
Chris@0: 
Chris@0:         if ($constraint->minWidth) {
Chris@0:             if (!ctype_digit((string) $constraint->minWidth)) {
Chris@14:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid minimum width.', $constraint->minWidth));
Chris@0:             }
Chris@0: 
Chris@0:             if ($width < $constraint->minWidth) {
Chris@0:                 $this->context->buildViolation($constraint->minWidthMessage)
Chris@0:                     ->setParameter('{{ width }}', $width)
Chris@0:                     ->setParameter('{{ min_width }}', $constraint->minWidth)
Chris@0:                     ->setCode(Image::TOO_NARROW_ERROR)
Chris@0:                     ->addViolation();
Chris@0: 
Chris@0:                 return;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if ($constraint->maxWidth) {
Chris@0:             if (!ctype_digit((string) $constraint->maxWidth)) {
Chris@14:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid maximum width.', $constraint->maxWidth));
Chris@0:             }
Chris@0: 
Chris@0:             if ($width > $constraint->maxWidth) {
Chris@0:                 $this->context->buildViolation($constraint->maxWidthMessage)
Chris@0:                     ->setParameter('{{ width }}', $width)
Chris@0:                     ->setParameter('{{ max_width }}', $constraint->maxWidth)
Chris@0:                     ->setCode(Image::TOO_WIDE_ERROR)
Chris@0:                     ->addViolation();
Chris@0: 
Chris@0:                 return;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if ($constraint->minHeight) {
Chris@0:             if (!ctype_digit((string) $constraint->minHeight)) {
Chris@0:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid minimum height', $constraint->minHeight));
Chris@0:             }
Chris@0: 
Chris@0:             if ($height < $constraint->minHeight) {
Chris@0:                 $this->context->buildViolation($constraint->minHeightMessage)
Chris@0:                     ->setParameter('{{ height }}', $height)
Chris@0:                     ->setParameter('{{ min_height }}', $constraint->minHeight)
Chris@0:                     ->setCode(Image::TOO_LOW_ERROR)
Chris@0:                     ->addViolation();
Chris@0: 
Chris@0:                 return;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if ($constraint->maxHeight) {
Chris@0:             if (!ctype_digit((string) $constraint->maxHeight)) {
Chris@0:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid maximum height', $constraint->maxHeight));
Chris@0:             }
Chris@0: 
Chris@0:             if ($height > $constraint->maxHeight) {
Chris@0:                 $this->context->buildViolation($constraint->maxHeightMessage)
Chris@0:                     ->setParameter('{{ height }}', $height)
Chris@0:                     ->setParameter('{{ max_height }}', $constraint->maxHeight)
Chris@0:                     ->setCode(Image::TOO_HIGH_ERROR)
Chris@0:                     ->addViolation();
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@14:         $pixels = $width * $height;
Chris@14: 
Chris@14:         if (null !== $constraint->minPixels) {
Chris@14:             if (!ctype_digit((string) $constraint->minPixels)) {
Chris@14:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid minimum amount of pixels', $constraint->minPixels));
Chris@14:             }
Chris@14: 
Chris@14:             if ($pixels < $constraint->minPixels) {
Chris@14:                 $this->context->buildViolation($constraint->minPixelsMessage)
Chris@14:                     ->setParameter('{{ pixels }}', $pixels)
Chris@14:                     ->setParameter('{{ min_pixels }}', $constraint->minPixels)
Chris@14:                     ->setParameter('{{ height }}', $height)
Chris@14:                     ->setParameter('{{ width }}', $width)
Chris@14:                     ->setCode(Image::TOO_FEW_PIXEL_ERROR)
Chris@14:                     ->addViolation();
Chris@14:             }
Chris@14:         }
Chris@14: 
Chris@14:         if (null !== $constraint->maxPixels) {
Chris@14:             if (!ctype_digit((string) $constraint->maxPixels)) {
Chris@14:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid maximum amount of pixels', $constraint->maxPixels));
Chris@14:             }
Chris@14: 
Chris@14:             if ($pixels > $constraint->maxPixels) {
Chris@14:                 $this->context->buildViolation($constraint->maxPixelsMessage)
Chris@14:                     ->setParameter('{{ pixels }}', $pixels)
Chris@14:                     ->setParameter('{{ max_pixels }}', $constraint->maxPixels)
Chris@14:                     ->setParameter('{{ height }}', $height)
Chris@14:                     ->setParameter('{{ width }}', $width)
Chris@14:                     ->setCode(Image::TOO_MANY_PIXEL_ERROR)
Chris@14:                     ->addViolation();
Chris@14:             }
Chris@14:         }
Chris@14: 
Chris@0:         $ratio = round($width / $height, 2);
Chris@0: 
Chris@0:         if (null !== $constraint->minRatio) {
Chris@0:             if (!is_numeric((string) $constraint->minRatio)) {
Chris@0:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid minimum ratio', $constraint->minRatio));
Chris@0:             }
Chris@0: 
Chris@0:             if ($ratio < $constraint->minRatio) {
Chris@0:                 $this->context->buildViolation($constraint->minRatioMessage)
Chris@0:                     ->setParameter('{{ ratio }}', $ratio)
Chris@0:                     ->setParameter('{{ min_ratio }}', $constraint->minRatio)
Chris@0:                     ->setCode(Image::RATIO_TOO_SMALL_ERROR)
Chris@0:                     ->addViolation();
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if (null !== $constraint->maxRatio) {
Chris@0:             if (!is_numeric((string) $constraint->maxRatio)) {
Chris@0:                 throw new ConstraintDefinitionException(sprintf('"%s" is not a valid maximum ratio', $constraint->maxRatio));
Chris@0:             }
Chris@0: 
Chris@0:             if ($ratio > $constraint->maxRatio) {
Chris@0:                 $this->context->buildViolation($constraint->maxRatioMessage)
Chris@0:                     ->setParameter('{{ ratio }}', $ratio)
Chris@0:                     ->setParameter('{{ max_ratio }}', $constraint->maxRatio)
Chris@0:                     ->setCode(Image::RATIO_TOO_BIG_ERROR)
Chris@0:                     ->addViolation();
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if (!$constraint->allowSquare && $width == $height) {
Chris@0:             $this->context->buildViolation($constraint->allowSquareMessage)
Chris@0:                 ->setParameter('{{ width }}', $width)
Chris@0:                 ->setParameter('{{ height }}', $height)
Chris@0:                 ->setCode(Image::SQUARE_NOT_ALLOWED_ERROR)
Chris@0:                 ->addViolation();
Chris@0:         }
Chris@0: 
Chris@0:         if (!$constraint->allowLandscape && $width > $height) {
Chris@0:             $this->context->buildViolation($constraint->allowLandscapeMessage)
Chris@0:                 ->setParameter('{{ width }}', $width)
Chris@0:                 ->setParameter('{{ height }}', $height)
Chris@0:                 ->setCode(Image::LANDSCAPE_NOT_ALLOWED_ERROR)
Chris@0:                 ->addViolation();
Chris@0:         }
Chris@0: 
Chris@0:         if (!$constraint->allowPortrait && $width < $height) {
Chris@0:             $this->context->buildViolation($constraint->allowPortraitMessage)
Chris@0:                 ->setParameter('{{ width }}', $width)
Chris@0:                 ->setParameter('{{ height }}', $height)
Chris@0:                 ->setCode(Image::PORTRAIT_NOT_ALLOWED_ERROR)
Chris@0:                 ->addViolation();
Chris@0:         }
Chris@0: 
Chris@0:         if ($constraint->detectCorrupted) {
Chris@17:             if (!\function_exists('imagecreatefromstring')) {
Chris@0:                 throw new RuntimeException('Corrupted images detection requires installed and enabled GD extension');
Chris@0:             }
Chris@0: 
Chris@0:             $resource = @imagecreatefromstring(file_get_contents($value));
Chris@0: 
Chris@0:             if (false === $resource) {
Chris@0:                 $this->context->buildViolation($constraint->corruptedMessage)
Chris@0:                     ->setCode(Image::CORRUPTED_IMAGE_ERROR)
Chris@0:                     ->addViolation();
Chris@0: 
Chris@0:                 return;
Chris@0:             }
Chris@0: 
Chris@0:             imagedestroy($resource);
Chris@0:         }
Chris@0:     }
Chris@0: }