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fix: lib.net.cidr.host performs type-appropriate bounds check

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Sophie Taylor 2025-04-19 11:05:39 +10:00 • committed by Sophie Taylor (spacekitteh)
parent 5cc4cb34fb
commit 12b9f46b00
1 changed files with 6 additions and 2 deletions
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8
lib/net.nix
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@ -67,9 +67,13 @@ in
i: n:
let
cap = libNet.net.cidr.capacity n;
intCheck = builtins.isInt i -> (i >= (-cap) && i < cap);
ipCheck = libNet.net.types.ip.check i -> ((libNet.net.types.ip-in n).check result);
result = libNet.net.cidr.host i n;
in
assert assertMsg (i >= (-cap) && i < cap) "The host ${toString i} lies outside of ${n}";
libNet.net.cidr.host i n;
assert assertMsg (ipCheck && intCheck) "The host ${toString i} lies outside of ${n}";
result;
# hostCidr :: (ip | mac | integer) -> cidr -> cidr
#
# Returns the nth host in the given cidr range (like cidr.host)