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<?php |
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namespace JeroenDesloovere\VCard\Property\Value; |
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use JeroenDesloovere\VCard\Exception\PropertyException; |
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class ImageValue |
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{ |
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/** @var string - The raw image value or the external URL */ |
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private $value; |
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private const BASE_64_DECODED = 'base_64_decoded'; |
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private const BASE_64_ENCODED = 'base_64_encoded'; |
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private const LOCAL_IMAGE_PATH = 'local_image_path'; |
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private const URL = 'url'; |
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public function __construct(string $value) |
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{ |
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$this->setValue($value); |
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} |
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public function __toString(): string |
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{ |
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return $this->value; |
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} |
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public function getValue(): string |
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{ |
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return $this->value; |
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} |
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private function getValueType(string $value): string |
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{ |
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if ($this->isBase64Encoded($value)) { |
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return self::BASE_64_ENCODED; |
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} |
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if ($this->isURL($value)) { |
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return self::URL; |
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} |
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if ($this->isLocalImagePath($value)) { |
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return self::LOCAL_IMAGE_PATH; |
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} |
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return self::BASE_64_DECODED; |
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} |
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private function isBase64Encoded(string $content): bool |
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{ |
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return strpos($content, 'data') === 0; |
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} |
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private function isLocalImagePath(string $localImagePath): bool |
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{ |
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try { |
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if (is_file($localImagePath)) { |
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return true; |
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} |
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} catch (\Exception $e) { |
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return false; |
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} |
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return false; |
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} |
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private function isURL(string $value): bool |
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{ |
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return filter_var($value, FILTER_VALIDATE_URL) !== false; |
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} |
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private function isValidLocalImage(string $imagePath): bool |
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{ |
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$mimeType = mime_content_type($imagePath); |
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$this->sanitizeMimeType($mimeType); |
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return $this->isValidMimeType($mimeType); |
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} |
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private function isValidImageURL(string $URL): bool |
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{ |
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$headers = get_headers($URL, 1); |
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if (array_key_exists('Content-Type', $headers)) { |
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$mimeType = $headers['Content-Type']; |
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if (is_array($mimeType)) { |
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$mimeType = end($mimeType); |
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} |
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} |
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$this->sanitizeMimeType($mimeType); |
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return $this->isValidMimeType($mimeType); |
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} |
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private function isValidImageContent(string $value): bool |
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{ |
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$finfo = new \finfo(); |
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$mimeType = $finfo->buffer($value, FILEINFO_MIME_TYPE); |
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$this->sanitizeMimeType($mimeType); |
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return $this->isValidMimeType($mimeType); |
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} |
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private function isValidMimeType(string $mimeType): bool |
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{ |
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if (!is_string($mimeType) || substr($mimeType, 0, 6) !== 'image/') { |
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return false; |
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} |
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; |
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return true; |
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} |
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private function sanitizeMimeType(string &$mimeType) |
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{ |
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if (strpos($mimeType, ';') !== false) { |
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$mimeType = strstr($mimeType, ';', true); |
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} |
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} |
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private function setValue(string $value): void |
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{ |
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$valueType = $this->getValueType($value); |
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switch ($valueType) { |
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case self::LOCAL_IMAGE_PATH: |
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if (!$this->isValidLocalImage($value)) { |
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throw PropertyException::forInvalidImage(); |
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} |
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try { |
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$value = file_get_contents(realpath($value)); |
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} catch (\Exception $e) { |
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throw PropertyException::forInvalidImage(); |
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} |
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break; |
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case self::BASE_64_DECODED: |
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if (!$this->isValidImageContent($value)) { |
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throw PropertyException::forInvalidImage(); |
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} |
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$value = base64_encode($value); |
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break; |
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case self::URL: |
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if (!$this->isValidImageURL($value)) { |
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throw PropertyException::forInvalidImage(); |
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} |
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break; |
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default: |
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break; |
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} |
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$this->value = $value; |
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} |
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} |
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jeroendesloovere /
vcard
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