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