Mimetype detection for hidden files

Signed-off-by: Magnus Walbeck <mw@mwalbeck.org>

2 files changed, 10 insertions, 0 deletions

diff --git a/lib/private/Files/Type/Detection.php b/lib/private/Files/Type/Detection.php
index 84d727ebb0e..b4c2ec01a8a 100644
--- a/lib/private/Files/Type/Detection.php
+++ b/lib/private/Files/Type/Detection.php
@@ -167,6 +167,12 @@ class Detection implements IMimeTypeDetector {
 		$this->loadMappings();
 
 		$fileName = basename($path);
+
+		// remove leading dot on hidden files with a file extension
+		if (strpos($fileName, '.') === 0 && strpos($fileName, '.', 1)) {
+			$fileName = substr($fileName, 1);
+		}
+
 		// note: leading dot doesn't qualify as extension
 		if (strpos($fileName, '.') > 0) {
 			//try to guess the type by the file extension
diff --git a/tests/lib/Files/Type/DetectionTest.php b/tests/lib/Files/Type/DetectionTest.php
index 87e0f94e3e2..5c1f48a806e 100644
--- a/tests/lib/Files/Type/DetectionTest.php
+++ b/tests/lib/Files/Type/DetectionTest.php
@@ -74,9 +74,13 @@ class DetectionTest extends \Test\TestCase {
 		$this->assertEquals('text/plain', $this->detection->detectPath('foo.txt'));
 		$this->assertEquals('image/png', $this->detection->detectPath('foo.png'));
 		$this->assertEquals('image/png', $this->detection->detectPath('foo.bar.png'));
+		$this->assertEquals('image/png', $this->detection->detectPath('.hidden.png'));
+		$this->assertEquals('image/png', $this->detection->detectPath('.hidden.foo.png'));
 		$this->assertEquals('image/png', $this->detection->detectPath('.hidden/foo.png'));
+		$this->assertEquals('image/png', $this->detection->detectPath('.hidden/.hidden.png'));
 		$this->assertEquals('image/png', $this->detection->detectPath('test.jpg/foo.png'));
 		$this->assertEquals('application/octet-stream', $this->detection->detectPath('.png'));
+		$this->assertEquals('application/octet-stream', $this->detection->detectPath('..hidden'));
 		$this->assertEquals('application/octet-stream', $this->detection->detectPath('foo'));
 		$this->assertEquals('application/octet-stream', $this->detection->detectPath(''));
 	}