Unlock KPXC databases on login

[lofidevops]

User story: I have configured my GNU/Linux desktop to unlock my system keyring on login. I want to open KPXC files without being prompted for a passphrase, so I don't have to worry about passphrases unnecessarily.

This is a specific scenario to be tested after implementing #1404

Expected Behavior

Manually opening a file

• Configure desktop to unlock system keyring on login
• Store unlock passphrase in system keyring (see Allow unlocking KPXC database using passphrase stored in system keyring #1404)
• Log in (keyring unlocked)
• Double-click passphrase-protected KPXC file
• KPXC file opens

Programmatic access

• Configure desktop to unlock system keyring on login
• Store unlock passphrase in system keyring (see Allow unlocking KPXC database using passphrase stored in system keyring #1404)
• Log in (keyring unlocked)
• Start KPXC plugin (for example, browser integration)
• KPXC data immediately accessible via plugin (no passphrase required)

[Generator]

That can be done with pw-stdin.
Example of database password stored on libsecret
secret-tool lookup name keepass | keepassxc --pw-stdin --keyfile /path/to/keyfile /path/to/database.kdbx
No passphrase or keyfile prompted.

[sojusnik]

@Generator A step-by-step approach is described here.

[droidmonkey]

As mentioned this is already possible using existing features.

[gozzilli]

If it's useful this seems to work for me on macos:
security find-generic-password -s pw-keepassxc -w | /Applications/KeePassXC.app/Contents/MacOS/KeePassXC --pw-stdin /Users/davide/Personal/SynologyDrive/DZHome2.kdbx
after having added a new password called pw-keepassxc to the login Keychain.