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[BUG] Bolean received and not supported on IncomingMailAttachment.php line 140 #734

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@Dani-0113

Description

@Dani-0113

Environment (please complete the following information):

  • PHP IMAP version: 4.2
  • PHP Version: 7.4.33
  • Type of execution: CLI

Describe the bug
When failing to read Exif Starndar TIFF image data it does return 0 and it crashes because de function getFileInfo expect a string

To Reproduce
Send a attachment like an image that exceeds the name use count.

The used code to fix it:

public function getFileInfo(int $fileinfo_const = FILEINFO_NONE):  string
    {
        if ((FILEINFO_MIME == $fileinfo_const) && (false != $this->mimeType)) {
            return $this->mimeType;
        }

        $finfo = new finfo($fileinfo_const);

        $bufferedData = $finfo->buffer($this->getContents());

        if (is_bool($bufferedData)){ return ''; } //ADDED LINE SO IT DOES NOT CRASH

        return $bufferedData;
    }

Expected behavior
When not readed properly just continue.

Screenshots / Outputs
/*
* PHP Warning: finfo::buffer(): Failed identify data 0:JPEG image data, JFIF standard 1.01, aspect ratio, density 72x72, segment length 16, Exif Standard: [TIFF image data, big-endian, direntries=5, orientation=upper-left, xresolution=74, yresolution=82, resolutionunit=2]name use count (30) exceeded in /var/www/html/proyect/vendor/php-imap/php-imap/src/PhpImap/IncomingMailAttachment.php on line 140
* PHP Fatal error: Uncaught TypeError: Return value of PhpImap\IncomingMailAttachment::getFileInfo() must be of the type string, bool returned in /var/www/html/proyect/vendor/php-imap/php-imap/src/PhpImap/IncomingMailAttachment.php:140
*/

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