Martin Pitt
1d0120f568
Check for overflow when parsing LISTEN_PID and LISTEN_FDS environment variables, as documented in strtol(3). However, don't explicitly check for `ULONG_MAX` and friends, as that is both brittle and also slightly incorrect (as ULONG_MAX may actually be a valid fd). So explicitly zero errno and then check for any error (which can really just be ERANGE, unless the string is really broken and specifies a base). systemd controls these environment variables, so this isn't practically relevant, just defense in depth and helping security scanners.
Cockpit
A sysadmin login session in a web browser
Cockpit is an interactive server admin interface. It is easy to use and very lightweight. Cockpit interacts directly with the operating system from a real Linux session in a browser.
Using Cockpit
You can install Cockpit on many Linux operating systems including Debian, Fedora and RHEL.
Cockpit makes Linux discoverable, allowing sysadmins to easily perform tasks such as starting containers, storage administration, network configuration, inspecting logs and so on.
Jumping between the terminal and the web tool is no problem. A service started via Cockpit can be stopped via the terminal. Likewise, if an error occurs in the terminal, it can be seen in the Cockpit journal interface.
You can also easily add other machines that have Cockpit installed and are accessible via SSH and jump between these hosts.