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nixos/networkd: allow RoutingPolicyRule port ranges

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Linux and Systemd allow port ranges to be used in routing policy rules.

https://www.freedesktop.org/software/systemd/man/latest/systemd.network.html#SourcePort=
This commit is contained in:
Fabian Möller 2024-03-06 09:11:54 +01:00
parent 4f8234318e
commit f753e58e6e
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2 changed files with 16 additions and 3 deletions
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15
nixos/lib/systemd-lib.nix
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@ -73,13 +73,26 @@ in rec {
optional (attr ? ${name} && (! isMacAddress attr.${name} && attr.${name} != "none"))
"Systemd ${group} field `${name}` must be a valid MAC address or the special value `none`.";
isNumberOrRangeOf = check: v:
if isInt v
then check v
else let
parts = splitString "-" v;
lower = toIntBase10 (head parts);
upper = if tail parts != [] then toIntBase10 (head (tail parts)) else lower;
in
length parts <= 2 && lower <= upper && check lower && check upper;
isPort = i: i >= 0 && i <= 65535;
isPortOrPortRange = isNumberOrRangeOf isPort;
assertPort = name: group: attr:
optional (attr ? ${name} && ! isPort attr.${name})
"Error on the systemd ${group} field `${name}': ${attr.name} is not a valid port number.";
assertPortOrPortRange = name: group: attr:
optional (attr ? ${name} && ! isPortOrPortRange attr.${name})
"Error on the systemd ${group} field `${name}': ${attr.name} is not a valid port number or range of port numbers.";
assertValueOneOf = name: values: group: attr:
optional (attr ? ${name} && !elem attr.${name} values)
"Systemd ${group} field `${name}' cannot have value `${toString attr.${name}}'.";