Revert "remove 32-bit workarounds"

This reverts commit dd8774389e.

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

lib/private/Files/Storage/Local.php

@@ -171,6 +171,11 @@ class Local extends \OC\Files\Storage\Common {
 			return false;
 		}
 		$statResult = @stat($fullPath);
+		if (PHP_INT_SIZE === 4 && $statResult && !$this->is_dir($path)) {
+			$filesize = $this->filesize($path);
+			$statResult['size'] = $filesize;
+			$statResult[7] = $filesize;
+		}
 		if (is_array($statResult)) {
 			$statResult['full_path'] = $fullPath;
 		}
@@ -242,6 +247,10 @@ class Local extends \OC\Files\Storage\Common {
 			return 0;
 		}
 		$fullPath = $this->getSourcePath($path);
+		if (PHP_INT_SIZE === 4) {
+			$helper = new \OC\LargeFileHelper;
+			return $helper->getFileSize($fullPath);
+		}
 		return filesize($fullPath);
 	}
 
@@ -263,6 +272,10 @@ class Local extends \OC\Files\Storage\Common {
 		if (!$this->file_exists($path)) {
 			return false;
 		}
+		if (PHP_INT_SIZE === 4) {
+			$helper = new \OC\LargeFileHelper();
+			return $helper->getFileMtime($fullPath);
+		}
 		return filemtime($fullPath);
 	}
 

lib/private/Setup.php

@@ -247,13 +247,14 @@ class Setup {
 			];
 		}
 
-		if (PHP_INT_SIZE < 8) {
+		if ($this->iniWrapper->getString('open_basedir') !== '' && PHP_INT_SIZE === 4) {
 			$errors[] = [
 				'error' => $this->l10n->t(
-					'It seems that this %s instance is running on a 32-bit PHP environment. 64-bit is required for 26 and higher.',
+					'It seems that this %s instance is running on a 32-bit PHP environment and the open_basedir has been configured in php.ini. ' .
+					'This will lead to problems with files over 4 GB and is highly discouraged.',
 					[$this->defaults->getProductName()]
 				),
-				'hint' => $this->l10n->t('Please switch to 64-bit PHP.'),
+				'hint' => $this->l10n->t('Please remove the open_basedir setting within your php.ini or switch to 64-bit PHP.'),
 			];
 		}
 

lib/private/Streamer.php

@@ -85,7 +85,7 @@ class Streamer {
 		} elseif ($request->isUserAgent($this->preferTarFor)) {
 			$this->streamerInstance = new TarStreamer();
 		} else {
-			$this->streamerInstance = new ZipStreamer(['zip64' => true]);
+			$this->streamerInstance = new ZipStreamer(['zip64' => PHP_INT_SIZE !== 4]);
 		}
 	}
 

lib/private/legacy/OC_Response.php

@@ -52,6 +52,19 @@ class OC_Response {
 	 * @param string|int|float $length Length to be sent
 	 */
 	public static function setContentLengthHeader($length) {
+		if (PHP_INT_SIZE === 4) {
+			if ($length > PHP_INT_MAX && stripos(PHP_SAPI, 'apache') === 0) {
+				// Apache PHP SAPI casts Content-Length headers to PHP integers.
+				// This enforces a limit of PHP_INT_MAX (2147483647 on 32-bit
+				// platforms). So, if the length is greater than PHP_INT_MAX,
+				// we just do not send a Content-Length header to prevent
+				// bodies from being received incompletely.
+				return;
+			}
+			// Convert signed integer or float to unsigned base-10 string.
+			$lfh = new \OC\LargeFileHelper;
+			$length = $lfh->formatUnsignedInteger($length);
+		}
 		header('Content-Length: '.$length);
 	}