fix: improve file type detection and Redis connection handling

.gitignore

@@ -3,6 +3,7 @@ notice.txt
 .phpunit.result.cache
 docs/
 .claude
+.antigravity*
 logs
 data
-tmp
+tmp

src/api/info.php

@@ -41,10 +41,28 @@ function getInfoAboutHash($hash)
         return array('status'=>'err','reason'=>'File not found');
     $size = filesize($file);
     $size_hr = renderSize($size);
-    $content_type = exec("file -bi " . escapeshellarg($file));
+
+    $content_type = false;
+    try {
+        if (class_exists('finfo')) {
+            $finfo = new finfo(FILEINFO_MIME);
+            $content_type = $finfo->file($file);
+        }
+    } catch (\Throwable $t) {
+        // ignore
+    }
+
+    if (!$content_type && function_exists('mime_content_type')) {
+        $content_type = @mime_content_type($file);
+    }
+
+    if (!$content_type && strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN') {
+        $content_type = @exec("file -bi " . escapeshellarg($file));
+    }
+
+    $type = $content_type;
     if($content_type && strpos($content_type,'/')!==false && strpos($content_type,';')!==false)
     {
-        $type = $content_type;
         $c = explode(';',$type);
         $type = $c[0];
     }

src/content-controllers/image/image.controller.php

@@ -314,7 +314,7 @@ function gifToMP4($gifpath,$target)
 
     function saveObjOfImage($im,$path,$type)
     {
-        $tmppath = '/tmp/'.getNewHash($type,12);
+        $tmppath = sys_get_temp_dir() . DIRECTORY_SEPARATOR . getNewHash($type,12);
         switch($type)
         {
             case 'jpeg':

src/inc/core.php

@@ -371,10 +371,15 @@ function storageControllerUpload($hash)
 
 function stringInFile($string,$file)
 {
-    $handle = fopen($file, 'r');
+    if (!file_exists($file)) return false;
+    $handle = @fopen($file, 'r');
+    if (!$handle) return false;
     while (($line = fgets($handle)) !== false) {
         $line=trim($line);
-        if($line==$string) return true;  
+        if($line==$string) {
+            fclose($handle);
+            return true;  
+        }
     }
     fclose($handle);
     return false;
@@ -484,18 +489,24 @@ function renderSize($byte)
 
 function getTypeOfFile($url)
 {
-    // on linux use the "file" command or it will handle everything as octet-stream
-	if(strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN')
-	{
-		$content_type = exec("file -bi " . escapeshellarg($url));
-		if($content_type && strpos($content_type,'/')!==false && strpos($content_type,';')!==false)
-			$type = $content_type;
+    $type = false;
+    try {
+        if (class_exists('finfo')) {
+            $finfo = new finfo(FILEINFO_MIME);
+            $type = $finfo->file($url);
+        }
+    } catch (\Throwable $t) {
+        // ignore
     }
-    else
-    {
-        //for windows we'll use mime_content_type. Make sure you have enabled the "exif" extension in php.ini
-        $type = mime_content_type($url);
+
+    if (!$type && function_exists('mime_content_type')) {
+        $type = @mime_content_type($url);
     }
+
+    if (!$type && strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN') {
+        $type = @exec("file -bi " . escapeshellarg($url));
+    }
+
     if(!$type) return false;
     if(startsWith($type,'text')) return 'text';
 	$arr = explode(';', trim($type));
@@ -1387,13 +1398,22 @@ function rebuildMeta(){
 function getFileMimeType($file)
 {
     try {
-        $finfo = new finfo(FILEINFO_MIME_TYPE);
-        return $finfo->file($file);
-    } catch (Exception $e) {
-        //fallback to shell command if finfo is not available
-        $mimeType = shell_exec('file --mime-type -b ' . escapeshellarg($file));
-        return trim($mimeType);
+        if (class_exists('finfo')) {
+            $finfo = new finfo(FILEINFO_MIME_TYPE);
+            return $finfo->file($file);
+        }
+    } catch (\Throwable $e) {
+        // ignore
     }
+
+    if (function_exists('mime_content_type')) {
+        $mime = @mime_content_type($file);
+        if ($mime) return $mime;
+    }
+
+    //fallback to shell command if finfo and mime_content_type are not available
+    $mimeType = shell_exec('file --mime-type -b ' . escapeshellarg($file));
+    return trim($mimeType);
 }
 
 function getRelativeToDataPath(string $path): string

web/index.php

@@ -22,13 +22,21 @@
 // redis
 if(!defined('REDIS_CACHING') || REDIS_CACHING == true)
 {
-	$GLOBALS['redis'] = new Redis();
-	$GLOBALS['redis']->connect((!defined('REDIS_SERVER'))?'localhost':REDIS_SERVER, (!defined('REDIS_PORT'))?6379:REDIS_PORT);
+	try {
+		$GLOBALS['redis'] = new Redis();
+		$redis_host = (!defined('REDIS_SERVER')) ? 'localhost' : REDIS_SERVER;
+		$redis_port = (!defined('REDIS_PORT')) ? 6379 : REDIS_PORT;
+		// connect with 1.0 second timeout to prevent locking up PHP workers if Redis is down
+		@$GLOBALS['redis']->connect($redis_host, $redis_port, 1.0);
+	} catch (\Throwable $e) {
+		$GLOBALS['redis'] = null;
+		error_log("Failed to connect to Redis: " . $e->getMessage());
+	}
 }
 
 
-//parse the URL to an array and filter it
-$url = array_filter(explode('/',ltrim(parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH) ?? '','/')));
+//parse the URL to an array and filter it, keeping '0' values
+$url = array_filter(explode('/',ltrim(parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH) ?? '','/')), 'strlen');
 
 if($url[0] == 'api')
 {