about-me: Add detection of UDP ports

CHANGELOG.md

@@ -49,6 +49,7 @@ Monitoring Plugins:
 
 * \*-version: Add new parameters `--insecure` `--no-proxy` `--timeout`
 * about-me: Add detection of PHP Composer
+* about-me: Add detection of UDP ports
 * about-me: Add new parameters `--insecure` `--no-proxy` `--timeout`
 * about-me: Pipes ("|") within the plugin output lead to broken perfdata ([#741](https://github.com/Linuxfabrik/monitoring-plugins/issues/741))
 * apache-httpd-status: Add new parameters `--no-proxy` `--timeout`

check-plugins/about-me/README.rst

@@ -9,7 +9,7 @@ Reports an overview about the host dimensions, its network interfaces, deployed
 * System information (OS, CPUs, disks, ram, UEFI y/n etc.)
 * Python modules: Reports version of installed Python modules some of our checks depend on
 * Interfaces: All IPv4 network interfaces with their IP address
-* Listening TCP ports
+* Listening TCP and UDP ports
 * Software installed: Lists well-known packages installed by your package manager
 * Software found/guessed: Manually installed software that resides in ``/home``, ``/opt`` and ``/var/www/html``
 * Tools: Admin-preferred tools like dig, vim, wget etc. - normally not installed on a minimal server system
@@ -78,18 +78,24 @@ Full output example:
 
     myhostname: Fedora Linux 36 (Thirty Six) Kernel 6.2.10-100.fc36.x86_64 virtualized on kvm, OpenStack Foundation OpenStack Nova, Firmware: n/a, SerNo: 8259353c-789d-4c63-be49-e246ae23b31c, Proc: pc-i440fx-5.2, #Cores: 2, #Threads: 2, Current Speed: 2000 MHz, 4.0GiB RAM, Disk vda 20G, BIOS boot, born 2022-05-25. Features: iptables, lvm, nftables, selinux. Missing: firewalld. About-me v2023042301
 
-    Listening TCP Ports:
-    * 0.0.0.0:22/tcp4
+    Listening TCP/UDP Ports:
     * [::]:22/tcp6
+    * 0.0.0.0:22/tcp4
     * 127.0.0.1:25/tcp4
-    * 127.0.0.54:53/tcp4
-    * 127.0.0.53:53/tcp4
-    * 0.0.0.0:80/tcp4
-    * 0.0.0.0:443/tcp4
+    * [::]:80/tcp6
+    * [::]:111/tcp6
+    * 0.0.0.0:111/tcp4
+    * 0.0.0.0:111/udp4
+    * [::]:111/udp6
+    * 127.0.0.1:323/udp4
+    * [::1]:323/udp6
+    * [::]:443/tcp6
+    * 0.0.0.0:3306/tcp4
     * [::]:3306/tcp6
-    * [::]:5355/tcp6
-    * 0.0.0.0:5355/tcp4
     * [::]:5665/tcp6
+    * 127.0.0.1:6379/tcp4
+    * [::1]:6379/tcp6
+    * [::]:9980/tcp6
 
     SW installed:
     * Apache httpd 2.4.56

check-plugins/about-me/about-me

@@ -40,7 +40,7 @@ except ImportError:
 
 
 __author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
-__version__ = '2024032502'
+__version__ = '2024040901'
 
 DESCRIPTION = 'Reports a quick overview about the host dimensions and installed software.'
 
@@ -1843,11 +1843,10 @@ def get_listening_ports():
         nc = psutil.net_connections('inet')
         for c in nc:
             ip, port = c.laddr
-            if c.type == socket.SOCK_DGRAM:
-                # ignore udp
-                continue
             if c.type == socket.SOCK_STREAM and c.status == psutil.CONN_LISTEN:
                 proto = 'tcp'
+            elif c.type == socket.SOCK_DGRAM and c.status == psutil.CONN_NONE:
+                proto = 'udp'
             else:
                 continue
             if c.family == socket.AF_INET:
@@ -1856,7 +1855,7 @@ def get_listening_ports():
                 proto += '6'
             result.append({
                 'proto': proto,
-                'ip': ip if ip != '::' else '[::]',
+                'ip': '[{}]'.format(ip) if ':' in ip and not ip.startswith('[') and not ip.endswith(']') else ip, # pylint: disable=C0301
                 'port': port,
             })
         return sorted(result, key=lambda d: d['port'])
@@ -2245,7 +2244,7 @@ def main():
         msg += 'Interfaces (IPv4):\n{}\n'.format(interfaces)
 
     if ports:
-        msg += 'Listening TCP Ports:\n'
+        msg += 'Listening TCP/UDP Ports (sorted by port):\n'
         for p in ports:
             msg += '* {}:{}/{}\n'.format(p['ip'], p['port'], p['proto'])
         msg += '\n'