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nextcloud/tests/lib/ImageTest.php
Joachim Bauch d3d65e5c88
Prevent loading images that would require too much memory. 
For most image formats, the header specifies the width/height.
PHP allocates an image object from that size, even if the actual
image data is much smaller. This image object size is not limited
by the limit configured in PHP.

The memory limit can be configured through "config.php" setting
"preview_max_memory" and defaults to 128 MBytes which should be
enough for most images without filling up all memory.

Signed-off-by: Joachim Bauch <bauch@struktur.de>
2022-01-11 11:44:38 +01:00

383 lines
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<?php
/**
* Copyright (c) 2013 Christopher Schäpers <christopher@schaepers.it>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace Test;
use OC;
use OCP\IConfig;
class ImageTest extends \Test\TestCase {
public static function tearDownAfterClass(): void {
@unlink(OC::$SERVERROOT.'/tests/data/testimage2.png');
@unlink(OC::$SERVERROOT.'/tests/data/testimage2.jpg');
parent::tearDownAfterClass();
}
public function testConstructDestruct() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertInstanceOf('\OC_Image', $img);
$this->assertInstanceOf('\OCP\IImage', $img);
unset($img);
$imgcreate = imagecreatefromjpeg(OC::$SERVERROOT.'/tests/data/testimage.jpg');
$img = new \OC_Image();
$img->setResource($imgcreate);
$this->assertInstanceOf('\OC_Image', $img);
$this->assertInstanceOf('\OCP\IImage', $img);
unset($img);
$base64 = base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif'));
$img = new \OC_Image();
$img->loadFromBase64($base64);
$this->assertInstanceOf('\OC_Image', $img);
$this->assertInstanceOf('\OCP\IImage', $img);
unset($img);
$img = new \OC_Image();
$this->assertInstanceOf('\OC_Image', $img);
$this->assertInstanceOf('\OCP\IImage', $img);
unset($img);
}
public function testValid() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertTrue($img->valid());
$text = base64_encode("Lorem ipsum dolor sir amet …");
$img = new \OC_Image();
$img->loadFromBase64($text);
$this->assertFalse($img->valid());
$img = new \OC_Image();
$this->assertFalse($img->valid());
}
public function testMimeType() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertEquals('image/png', $img->mimeType());
$img = new \OC_Image();
$this->assertEquals('', $img->mimeType());
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$this->assertEquals('image/jpeg', $img->mimeType());
$img = new \OC_Image();
$img->loadFromBase64(base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif')));
$this->assertEquals('image/gif', $img->mimeType());
}
public function testWidth() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertEquals(128, $img->width());
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$this->assertEquals(1680, $img->width());
$img = new \OC_Image();
$img->loadFromBase64(base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif')));
$this->assertEquals(64, $img->width());
$img = new \OC_Image();
$this->assertEquals(-1, $img->width());
}
public function testHeight() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertEquals(128, $img->height());
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$this->assertEquals(1050, $img->height());
$img = new \OC_Image();
$img->loadFromBase64(base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif')));
$this->assertEquals(64, $img->height());
$img = new \OC_Image();
$this->assertEquals(-1, $img->height());
}
public function testSave() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$img->resize(16);
$img->save(OC::$SERVERROOT.'/tests/data/testimage2.png');
$this->assertEquals(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage2.png'), $img->data());
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.jpg');
$img->resize(128);
$img->save(OC::$SERVERROOT.'/tests/data/testimage2.jpg');
$this->assertEquals(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage2.jpg'), $img->data());
}
public function testData() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$raw = imagecreatefromstring(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.png'));
// Preserve transparency
imagealphablending($raw, true);
imagesavealpha($raw, true);
ob_start();
imagepng($raw);
$expected = ob_get_clean();
$this->assertEquals($expected, $img->data());
$config = $this->createMock(IConfig::class);
$config->expects($this->once())
->method('getAppValue')
->with('preview', 'jpeg_quality', 90)
->willReturn(null);
$config->expects($this->once())
->method('getSystemValueInt')
->with('preview_max_memory', 128)
->willReturn(128);
$img = new \OC_Image(null, null, $config);
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.jpg');
$raw = imagecreatefromstring(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
ob_start();
imagejpeg($raw);
$expected = ob_get_clean();
$this->assertEquals($expected, $img->data());
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.gif');
$raw = imagecreatefromstring(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif'));
ob_start();
imagegif($raw);
$expected = ob_get_clean();
$this->assertEquals($expected, $img->data());
}
public function testDataNoResource() {
$img = new \OC_Image();
$this->assertNull($img->data());
}
/**
* @depends testData
*/
public function testToString() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$expected = base64_encode($img->data());
$this->assertEquals($expected, (string)$img);
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$expected = base64_encode($img->data());
$this->assertEquals($expected, (string)$img);
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.gif');
$expected = base64_encode($img->data());
$this->assertEquals($expected, (string)$img);
}
public function testResize() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertTrue($img->resize(32));
$this->assertEquals(32, $img->width());
$this->assertEquals(32, $img->height());
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$this->assertTrue($img->resize(840));
$this->assertEquals(840, $img->width());
$this->assertEquals(525, $img->height());
$img = new \OC_Image();
$img->loadFromBase64(base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif')));
$this->assertTrue($img->resize(100));
$this->assertEquals(100, $img->width());
$this->assertEquals(100, $img->height());
}
public function testPreciseResize() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertTrue($img->preciseResize(128, 512));
$this->assertEquals(128, $img->width());
$this->assertEquals(512, $img->height());
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$this->assertTrue($img->preciseResize(64, 840));
$this->assertEquals(64, $img->width());
$this->assertEquals(840, $img->height());
$img = new \OC_Image();
$img->loadFromBase64(base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif')));
$this->assertTrue($img->preciseResize(1000, 1337));
$this->assertEquals(1000, $img->width());
$this->assertEquals(1337, $img->height());
}
public function testCenterCrop() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$img->centerCrop();
$this->assertEquals(128, $img->width());
$this->assertEquals(128, $img->height());
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$img->centerCrop();
$this->assertEquals(1050, $img->width());
$this->assertEquals(1050, $img->height());
$img = new \OC_Image();
$img->loadFromBase64(base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif')));
$img->centerCrop(512);
$this->assertEquals(512, $img->width());
$this->assertEquals(512, $img->height());
}
public function testCrop() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$this->assertTrue($img->crop(0, 0, 50, 20));
$this->assertEquals(50, $img->width());
$this->assertEquals(20, $img->height());
$img = new \OC_Image();
$img->loadFromData(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.jpg'));
$this->assertTrue($img->crop(500, 700, 550, 300));
$this->assertEquals(550, $img->width());
$this->assertEquals(300, $img->height());
$img = new \OC_Image();
$img->loadFromBase64(base64_encode(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.gif')));
$this->assertTrue($img->crop(10, 10, 15, 15));
$this->assertEquals(15, $img->width());
$this->assertEquals(15, $img->height());
}
public static function sampleProvider() {
return [
['testimage.png', [200, 100], [100, 100]],
['testimage.jpg', [840, 840], [840, 525]],
['testimage.gif', [200, 250], [200, 200]]
];
}
/**
* @dataProvider sampleProvider
*
* @param string $filename
* @param int[] $asked
* @param int[] $expected
*/
public function testFitIn($filename, $asked, $expected) {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT . '/tests/data/' . $filename);
$this->assertTrue($img->fitIn($asked[0], $asked[1]));
$this->assertEquals($expected[0], $img->width());
$this->assertEquals($expected[1], $img->height());
}
public static function sampleFilenamesProvider() {
return [
['testimage.png'],
['testimage.jpg'],
['testimage.gif']
];
}
/**
* Image should not be resized if it's already smaller than what is required
*
* @dataProvider sampleFilenamesProvider
*
* @param string $filename
*/
public function testScaleDownToFitWhenSmallerAlready($filename) {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/' . $filename);
$currentWidth = $img->width();
$currentHeight = $img->height();
// We pick something larger than the image we want to scale down
$this->assertFalse($img->scaleDownToFit(4000, 4000));
// The dimensions of the image should not have changed since it's smaller already
$resizedWidth = $img->width();
$resizedHeight = $img->height();
$this->assertEquals(
$currentWidth, $img->width(), "currentWidth $currentWidth resizedWidth $resizedWidth \n"
);
$this->assertEquals(
$currentHeight, $img->height(),
"currentHeight $currentHeight resizedHeight $resizedHeight \n"
);
}
public static function largeSampleProvider() {
return [
['testimage.png', [200, 100], [100, 100]],
['testimage.jpg', [840, 840], [840, 525]],
];
}
/**
* @dataProvider largeSampleProvider
*
* @param string $filename
* @param int[] $asked
* @param int[] $expected
*/
public function testScaleDownWhenBigger($filename, $asked, $expected) {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/' . $filename);
//$this->assertTrue($img->scaleDownToFit($asked[0], $asked[1]));
$img->scaleDownToFit($asked[0], $asked[1]);
$this->assertEquals($expected[0], $img->width());
$this->assertEquals($expected[1], $img->height());
}
public function convertDataProvider() {
return [
[ 'image/gif'],
[ 'image/jpeg'],
[ 'image/png'],
];
}
/**
* @dataProvider convertDataProvider
*/
public function testConvert($mimeType) {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
$tempFile = tempnam(sys_get_temp_dir(), 'img-test');
$img->save($tempFile, $mimeType);
$this->assertEquals($mimeType, image_type_to_mime_type(exif_imagetype($tempFile)));
}
public function testMemoryLimitFromFile() {
$img = new \OC_Image();
$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage-badheader.jpg');
$this->assertFalse($img->valid());
}
public function testMemoryLimitFromData() {
$data = file_get_contents(OC::$SERVERROOT.'/tests/data/testimage-badheader.jpg');
$img = new \OC_Image();
$img->loadFromData($data);
$this->assertFalse($img->valid());
}
}
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