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https://github.com/NixOS/nixpkgs.git
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d559eed93a
Add a library function to parse and validate an IPv6 address from a string. It can parse the first two versions of an IPv6 address according to https://datatracker.ietf.org/doc/html/rfc4291#section-2.2. The third form "x❌x❌x:x.d.d.d.d" is not yet implemented. Optionally parser can accept prefix length (128 is default). Add shell script network.sh to test IPv6 parser functionality.
118 lines
5.0 KiB
Bash
Executable File
118 lines
5.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Tests lib/network.nix
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# Run:
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# [nixpkgs]$ lib/tests/network.sh
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# or:
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# [nixpkgs]$ nix-build lib/tests/release.nix
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set -euo pipefail
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shopt -s inherit_errexit
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if [[ -n "${TEST_LIB:-}" ]]; then
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NIX_PATH=nixpkgs="$(dirname "$TEST_LIB")"
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else
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NIX_PATH=nixpkgs="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.."; pwd)"
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fi
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export NIX_PATH
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die() {
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echo >&2 "test case failed: " "$@"
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exit 1
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}
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tmp="$(mktemp -d)"
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clean_up() {
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rm -rf "$tmp"
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}
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trap clean_up EXIT SIGINT SIGTERM
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work="$tmp/work"
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mkdir "$work"
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cd "$work"
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prefixExpression='
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let
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lib = import <nixpkgs/lib>;
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internal = import <nixpkgs/lib/network/internal.nix> {
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inherit lib;
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};
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in
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with lib;
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with lib.network;
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'
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expectSuccess() {
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local expr=$1
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local expectedResult=$2
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if ! result=$(nix-instantiate --eval --strict --json --show-trace \
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--expr "$prefixExpression ($expr)"); then
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die "$expr failed to evaluate, but it was expected to succeed"
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fi
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if [[ ! "$result" == "$expectedResult" ]]; then
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die "$expr == $result, but $expectedResult was expected"
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fi
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}
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expectSuccessRegex() {
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local expr=$1
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local expectedResultRegex=$2
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if ! result=$(nix-instantiate --eval --strict --json --show-trace \
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--expr "$prefixExpression ($expr)"); then
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die "$expr failed to evaluate, but it was expected to succeed"
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fi
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if [[ ! "$result" =~ $expectedResultRegex ]]; then
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die "$expr == $result, but $expectedResultRegex was expected"
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fi
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}
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expectFailure() {
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local expr=$1
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local expectedErrorRegex=$2
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if result=$(nix-instantiate --eval --strict --json --show-trace 2>"$work/stderr" \
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--expr "$prefixExpression ($expr)"); then
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die "$expr evaluated successfully to $result, but it was expected to fail"
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fi
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if [[ ! "$(<"$work/stderr")" =~ $expectedErrorRegex ]]; then
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die "Error was $(<"$work/stderr"), but $expectedErrorRegex was expected"
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fi
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}
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# Internal functions
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expectSuccess '(internal._ipv6.split "0:0:0:0:0:0:0:0").address' '[0,0,0,0,0,0,0,0]'
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expectSuccess '(internal._ipv6.split "000a:000b:000c:000d:000e:000f:ffff:aaaa").address' '[10,11,12,13,14,15,65535,43690]'
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expectSuccess '(internal._ipv6.split "::").address' '[0,0,0,0,0,0,0,0]'
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expectSuccess '(internal._ipv6.split "::0000").address' '[0,0,0,0,0,0,0,0]'
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expectSuccess '(internal._ipv6.split "::1").address' '[0,0,0,0,0,0,0,1]'
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expectSuccess '(internal._ipv6.split "::ffff").address' '[0,0,0,0,0,0,0,65535]'
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expectSuccess '(internal._ipv6.split "::000f").address' '[0,0,0,0,0,0,0,15]'
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expectSuccess '(internal._ipv6.split "::1:1:1:1:1:1:1").address' '[0,1,1,1,1,1,1,1]'
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expectSuccess '(internal._ipv6.split "1::").address' '[1,0,0,0,0,0,0,0]'
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expectSuccess '(internal._ipv6.split "1:1:1:1:1:1:1::").address' '[1,1,1,1,1,1,1,0]'
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expectSuccess '(internal._ipv6.split "1:1:1:1::1:1:1").address' '[1,1,1,1,0,1,1,1]'
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expectSuccess '(internal._ipv6.split "1::1").address' '[1,0,0,0,0,0,0,1]'
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expectFailure 'internal._ipv6.split "0:0:0:0:0:0:0:-1"' "contains malformed characters for IPv6 address"
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expectFailure 'internal._ipv6.split "::0:"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split ":0::"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split "0::0:"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split "0:0:"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split "0:0:0:0:0:0:0:0:0"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split "0:0:0:0:0:0:0:0:"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split "::0:0:0:0:0:0:0:0"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split "0::0:0:0:0:0:0:0"' "is not a valid IPv6 address"
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expectFailure 'internal._ipv6.split "::10000"' "0x10000 is not a valid u16 integer"
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expectSuccess '(internal._ipv6.split "::").prefixLength' '128'
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expectSuccess '(internal._ipv6.split "::/1").prefixLength' '1'
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expectSuccess '(internal._ipv6.split "::/128").prefixLength' '128'
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expectFailure '(internal._ipv6.split "::/0").prefixLength' "IPv6 subnet should be in range \[1;128\], got 0"
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expectFailure '(internal._ipv6.split "::/129").prefixLength' "IPv6 subnet should be in range \[1;128\], got 129"
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expectFailure '(internal._ipv6.split "/::/").prefixLength' "is not a valid IPv6 address in CIDR notation"
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# Library API
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expectSuccess 'lib.network.ipv6.fromString "2001:DB8::ffff/64"' '{"address":"2001:db8:0:0:0:0:0:ffff","prefixLength":64}'
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expectSuccess 'lib.network.ipv6.fromString "1234:5678:90ab:cdef:fedc:ba09:8765:4321/44"' '{"address":"1234:5678:90ab:cdef:fedc:ba09:8765:4321","prefixLength":44}'
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echo >&2 tests ok
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