comparison vendor/symfony/validator/Constraints/ImageValidator.php @ 0:c75dbcec494b

Initial commit from drush-created site

+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * 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\RuntimeException;
+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 <[e-mail]>
+ * @author Bernhard Schussek <[e-mail]>
+ */
+class ImageValidator extends FileValidator
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function validate($value, Constraint $constraint)
+    {
+        if (!$constraint instanceof Image) {
+            throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Image');
+        }
+
+        $violations = count($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 RuntimeException('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);
+        }
+    }
+}