Division by Zero When Aria2 Cannot Calculate Content Length

[solonovamax]

Describe the bug
There is a division by zero which occurs when aria2 cannot fetch the content length (eg. no Content-Length header)

To Reproduce
Steps to reproduce the behavior:

1. Download a file from a url with no Content-Length header
2. Navigate to "Active Downloads"
3. Observe a 500 server error in the console

Expected behavior
No error occurs

Desktop (please complete the following information):

• OS: Arch Linux 6.12.3-zen1-1-zen x86_64
• Browser Firefox Developer Edition
• Version 134.0b7

Log Message

{
  "reqId": "Ghd94bYhnIJnZ22rgf4h",
  "level": 3,
  "time": "2024-12-15T02:29:25-05:00",
  "remoteAddr": "163.123.169.197",
  "user": "solonovamax",
  "app": "index",
  "method": "POST",
  "url": "/index.phpwnloader/status/active",
  "message": "Division by zero in file '/var/www/nextcloud/apps/ncdownloader/lib/Controller/Aria2Controller.php' line 210",
  "userAgent": "Mozilla/5.0 (X11; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0",
  "version": "29.0.10.1",
  "exception": {
    "Exception": "Exception",
    "Message": "Division by zero in file '/var/www/nextcloud/apps/ncdownloader/lib/Controller/Aria2Controller.php' line 210",
    "Code": 0,
    "Trace": [
      { "file": "/var/www/nextcloud/lib/private/AppFramework/App.php", "line": 184, "function": "dispatch", "class": "OC\\AppFramework\\Http\\Dispatcher", "type": "->" },
      { "file": "/var/www/nextcloud/lib/private/Route/Router.php", "line": 331, "function": "main", "class": "OC\\AppFramework\\App", "type": "::" },
      { "file": "/var/www/nextcloud/lib/base.php", "line": 1060, "function": "match", "class": "OC\\Route\\Router", "type": "->" },
      { "file": "/var/www/nextcloud/index.php", "line": 49, "function": "handleRequest","class": "OC", "type": "::" }
    ],
    "File": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
    "Line": 170,
    "Previous": {
      "Exception": "DivisionByZeroError",
      "Message": "Division by zero",
      "Code": 0,
      "Trace": [
        { "file": "/var/www/nextcloud/apps/ncdownloader/lib/Controller/Aria2Controller.php", "line": 161, "function": "transformResp", "class": "OCA\\NCDownloader\\Controller\\Aria2Controller", "type": "->" },
        { "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php", "line": 232, "function":"getStatus", "class": "OCA\\NCDownloader\\Controller\\Aria2Controller", "type": "->" },
        { "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php", "line": 138, "function": "executeController", "class": "OC\\AppFramework\\Http\\Dispatcher", "type": "->" },
        { "file": "/var/www/nextcloud/lib/private/AppFramework/App.php", "line": 184, "function": "dispatch", "class": "OC\\AppFramework\\Http\\Dispatcher", "type": "->" },
        { "file": "/var/www/nextcloud/lib/private/Route/Router.php", "line": 331, "function": "main", "class": "OC\\AppFramework\\App", "type": "::" },
        { "file": "/var/www/nextcloud/lib/base.php", "line": 1060, "function": "match", "class": "OC\\Route\\Router", "type": "->" },
        { "file": "/var/www/nextcloud/index.php", "line": 49, "function": "handleRequest", "class": "OC", "type": "::" },
      ],
      "File": "/var/www/nextcloud/apps/ncdownloader/lib/Controller/Aria2Controller.php",
      "Line": 210
    },
    "message": "Division by zero in file '/var/www/nextcloud/apps/ncdownloader/lib/Controller/Aria2Controller.php' line 210",
    "exception": [],
    "CustomMessage": "Division by zero in file '/var/www/nextcloud/apps/ncdownloader/lib/Controller/Aria2Controller.php' line 210"
  },
  "id": "675e889ac913f"
}