Password popup, preshared key and dns option, some bug fixes

[luksus42]

Hi, I implemented some missing features and also fixed some bugs.

Sudo password popup - fixes https://github.com/DavidVentura/Wireguard_qml/issues/4

• 6dd567f7b63ea1c3759bed1b43cf1e065c8e7134
• e5cda82472a04e755879b797eb205124b1e7d03a I implemented a potential insecure way, of doing it, because the password get's saved in a qml property and could be leaked by logs for example. Also the password gets echoed to the subprocess commands and would be visible in the shell itself. Nevertheless it works and it is the best I could come up with.

Preshared key and DNS - fixes https://github.com/DavidVentura/Wireguard_qml/issues/5

• 73c3457601a3f35af116544920fae5be1bc9e90d
• 95ba6e7af34bf6ebd0d1790a0fd36ce1baf7af71 The preshared key is straight forward, nothing special. The DNS thing is more complicated and I am not sure, if this is the right way of doing it. Actually I thought this would be handled by the extra routes somehow, but that seems not to be the case. I also looked at the debian manpage of wg-quick, how it is doing such things (https://manpages.debian.org/unstable/wireguard-tools/wg-quick.8.en.html), but the interface specific resolvconf command provided there, does not work out on UT.

Bug: the userspace implementation was always used, even if the kernelmodule was recognized

• d2e0159f845314f881fae7b5fd18b17b26dfcd9a
• 8bbc34b6c49ea4569f12f24a9275c116f758ca28 Or at least, the daemon was always started. Then I saw in the code, that the daemon should not be used, if the kernel module is available. The useUserspace QML setting, was at first never set in the PickProfilePage and second not updated, when switching back to the PickProfilePage. This is fixed now.

InterfaceName was not set

• 0b3e15003257a7d86fdde450026857b7840e1f66 Somehow the interfacename was not set correctly. I am not sure, if this issue was a result of my changes or only happaning with the kernelmodule way... however, I reworked the way, how the name is set. It depends now on the count and index of the interface-item in the listmodel. -> wg0, wg1, wg2, etc.

Other

• added action to delete interfaces from the list f806e190fdc981edd24e96bc74ccd16b533aa562
• fixed that the log got spammed, trying to get the inteface-status, if there was no interface yet 06a1c55f24e3c6dbf2d5cd9bf5c69b8d95303cfd
• fixed text color for the traffic-text, if a dark theme was used a60dde988dd224654be5f2d0b1951a2f84878e3a
• on saving a profile, qml tried to log an error, which did not occur a655d9f577db45a8d1664fa689feee18b3a44c8f

[DavidVentura]

Looks very nice, I've been out of the ubuntu-phone circle for a while, I'll need to flash my PinePhone to test this.

For general routing: I am now convinced that this should use fwmark for routing decisions, otherwise it's likely to end up with a routing loop or stale routing

[DavidVentura]

Sorry for the long delay ( Thanks!