mirror of
https://github.com/systemd/systemd.git
synced 2024-12-23 21:35:11 +03:00
a0460dfed6
When [Link] MTU= is specified in a .network file, we have no idea about that what kind of interface will be configured with the .network file. The maximum and minimum MTU size depend on the kind of interface. So, we should not filter MTU eagerly in the parser. Closes #30140.
312 lines
11 KiB
Bash
Executable File
312 lines
11 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# SPDX-License-Identifier: LGPL-2.1-or-later
|
|
# shellcheck disable=SC2235
|
|
set -eux
|
|
set -o pipefail
|
|
|
|
# TODO/FIXME:
|
|
# - we should probably have something like "udevadm verify" but for .network files
|
|
# (networkctl verify?) so we can check that all directives are in correct sections
|
|
# - according to dracut.cmdline(7) <peer> address can also be followed by /CIDR,
|
|
# but this doesn't seem to work with sd-network-generator
|
|
|
|
if [[ -n "${1:-}" ]]; then
|
|
GENERATOR_BIN=$1
|
|
elif [[ -x /usr/lib/systemd/systemd-network-generator ]]; then
|
|
GENERATOR_BIN=/usr/lib/systemd/systemd-network-generator
|
|
elif [[ -x /lib/systemd/systemd-network-generator ]]; then
|
|
GENERATOR_BIN=/lib/systemd/systemd-network-generator
|
|
else
|
|
exit 1
|
|
fi
|
|
|
|
# See: https://github.com/systemd/systemd/pull/29888#issuecomment-1796187440
|
|
unset NOTIFY_SOCKET
|
|
|
|
WORK_DIR="$(mktemp --directory --tmpdir "test-network-generator-conversion.XXXXXX")"
|
|
# shellcheck disable=SC2064
|
|
trap "rm -rf '$WORK_DIR'" EXIT
|
|
|
|
# Convert octal netmask to CIDR notation (e.g. 255.255.255.0 => 24)
|
|
netmask_to_cidr() (
|
|
set +x
|
|
|
|
local netmask="${1:?}"
|
|
local x bits=0
|
|
|
|
# shellcheck disable=SC2086
|
|
x="0$(printf "%o" ${netmask//./ })"
|
|
while [[ "$x" -gt 0 ]]; do
|
|
((bits += x % 2))
|
|
((x >>= 1))
|
|
done
|
|
|
|
echo "$bits"
|
|
)
|
|
|
|
run_network_generator() {
|
|
local stderr
|
|
|
|
rm -rf "${WORK_DIR:?}"/*
|
|
stderr="$WORK_DIR/stderr"
|
|
if ! "$GENERATOR_BIN" --root "$WORK_DIR" 2>"$stderr"; then
|
|
echo >&2 "Generator failed when parsing $SYSTEMD_PROC_CMDLINE"
|
|
cat "$stderr"
|
|
return 1
|
|
fi
|
|
|
|
if [[ -s "$stderr" ]]; then
|
|
echo >&2 "Generator generated unexpected messages on stderr"
|
|
cat "$stderr"
|
|
return 1
|
|
fi
|
|
|
|
ls -l "$WORK_DIR/run/systemd/network/"
|
|
|
|
rm -f "$stderr"
|
|
return 0
|
|
}
|
|
|
|
check_dhcp() {
|
|
local dhcp="${1:?}"
|
|
local network_file="${2:?}"
|
|
|
|
case "$dhcp" in
|
|
dhcp)
|
|
grep -q "^DHCP=ipv4$" "$network_file"
|
|
;;
|
|
dhcp6)
|
|
grep -q "^DHCP=ipv6$" "$network_file"
|
|
;;
|
|
on|any)
|
|
grep -q "^DHCP=yes$" "$network_file"
|
|
;;
|
|
none|off)
|
|
grep -q "^DHCP=no$" "$network_file"
|
|
grep -q "^LinkLocalAddressing=no$" "$network_file"
|
|
grep -q "^IPv6AcceptRA=no$" "$network_file"
|
|
;;
|
|
auto6|ibft)
|
|
grep -q "^DHCP=no$" "$network_file"
|
|
;;
|
|
either6)
|
|
grep -q "^DHCP=ipv6$" "$network_file"
|
|
;;
|
|
link6)
|
|
grep -q "^DHCP=no$" "$network_file"
|
|
grep -q "^LinkLocalAddressing=ipv6$" "$network_file"
|
|
grep -q "^IPv6AcceptRA=no$" "$network_file"
|
|
;;
|
|
link-local)
|
|
grep -q "^DHCP=no$" "$network_file"
|
|
grep -q "^LinkLocalAddressing=yes$" "$network_file"
|
|
grep -q "^IPv6AcceptRA=no$" "$network_file"
|
|
;;
|
|
*)
|
|
echo >&2 "Invalid assignment $cmdline"
|
|
return 1
|
|
esac
|
|
|
|
return 0
|
|
}
|
|
|
|
# Check the shortest ip= variant, i.e.:
|
|
# ip={dhcp|on|any|dhcp6|auto6|either6|link6|link-local}
|
|
#
|
|
# Note:
|
|
# - dracut also supports single-dhcp
|
|
# - link-local is supported only by systemd-network-generator
|
|
check_one_dhcp() {
|
|
local cmdline="${1:?}"
|
|
local dhcp="${cmdline#ip=}"
|
|
local network_file
|
|
|
|
SYSTEMD_LOG_LEVEL=debug SYSTEMD_PROC_CMDLINE="$cmdline" run_network_generator
|
|
network_file="${WORK_DIR:?}/run/systemd/network/71-default.network"
|
|
cat "$network_file"
|
|
|
|
check_dhcp "$dhcp" "$network_file"
|
|
|
|
return 0
|
|
}
|
|
|
|
# Similar to the previous one, but with slightly more fields:
|
|
# ip=<interface>:{dhcp|on|any|dhcp6|auto6|link6|link-local}[:[<mtu>][:<macaddr>]]
|
|
#
|
|
# Same notes apply as well.
|
|
check_one_interface_dhcp() {
|
|
local cmdline="${1:?}"
|
|
local ifname dhcp mtu mac network_file
|
|
|
|
IFS=":" read -r ifname dhcp mtu mac <<< "${cmdline#ip=}"
|
|
|
|
SYSTEMD_LOG_LEVEL=debug SYSTEMD_PROC_CMDLINE="$cmdline" run_network_generator
|
|
network_file="${WORK_DIR:?}/run/systemd/network/70-$ifname.network"
|
|
cat "$network_file"
|
|
|
|
grep -q "^Name=$ifname$" "$network_file"
|
|
check_dhcp "$dhcp" "$network_file"
|
|
[[ -n "$mtu" ]] && grep -q "^MTUBytes=$mtu$" "$network_file"
|
|
[[ -n "$mac" ]] && grep -q "^MACAddress=$mac$" "$network_file"
|
|
|
|
return 0
|
|
}
|
|
|
|
# Check the "long" ip= formats, i.e:
|
|
# ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft}[:[<mtu>][:<macaddr>]
|
|
# ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft}[:[<dns1>][:<dns2>]]
|
|
check_one_long() {
|
|
local cmdline="${1:?}"
|
|
local ip peer gateway netmask hostname ifname dhcp arg1 arg2 network_file cidr stderr tmp
|
|
|
|
# To make parsing a bit easier when IPv6 is involved, replace all colons between [] with #, ...
|
|
tmp="$(echo "${cmdline#ip=}" | sed -re ':l; s/(\[[^]:]*):/\1#/; tl')"
|
|
# ... drop the now unnecessary [] and split the string into colon separated fields as usual, ...
|
|
IFS=":" read -r ip peer gateway netmask hostname ifname dhcp arg1 arg2 <<<"${tmp//[\[\]]}"
|
|
# ... and then replace # back to colons for fields that might contain an IPv6 address.
|
|
ip="${ip//#/:}"
|
|
peer="${peer//#/:}"
|
|
gateway="${gateway//#/:}"
|
|
arg1="${arg1//#/:}"
|
|
arg2="${arg2//#/:}"
|
|
|
|
SYSTEMD_LOG_LEVEL=debug SYSTEMD_PROC_CMDLINE="$cmdline" run_network_generator
|
|
|
|
if [[ -n "$ifname" ]]; then
|
|
network_file="${WORK_DIR:?}/run/systemd/network/70-$ifname.network"
|
|
grep -q "^Name=$ifname$" "$network_file"
|
|
else
|
|
network_file="${WORK_DIR:?}/run/systemd/network/71-default.network"
|
|
grep -q "^Kind=!\*$" "$network_file"
|
|
fi
|
|
|
|
cat "$network_file"
|
|
|
|
if [[ -n "$ip" && -n "$netmask" ]]; then
|
|
# The "ip" and "netmask" fields are merged together into an IP/CIDR value
|
|
if [[ "$netmask" =~ ^[0-9]+$ ]]; then
|
|
cidr="$netmask"
|
|
else
|
|
cidr="$(netmask_to_cidr "$netmask")"
|
|
fi
|
|
|
|
grep -q "^Address=$ip/$cidr$" "$network_file"
|
|
else
|
|
(! grep -q "^Address=" "$network_file")
|
|
fi
|
|
# If the "dhcp" field is empty, it defaults to "off"
|
|
[[ -z "$dhcp" ]] && dhcp="off"
|
|
[[ -n "$peer" ]] && grep -q "^Peer=$peer$" "$network_file"
|
|
[[ -n "$gateway" ]] && grep -q "^Gateway=$gateway$" "$network_file"
|
|
[[ -n "$hostname" ]] && grep -q "^Hostname=$hostname$" "$network_file"
|
|
check_dhcp "$dhcp" "$network_file"
|
|
|
|
# If the first optional argument is empty, assume the first variant
|
|
# See: https://github.com/dracutdevs/dracut/blob/4d594210d6ef4f04a9dbadacea73e9461ded352d/modules.d/40network/net-lib.sh#L533
|
|
if [[ -z "$arg1" || "$arg1" =~ ^[0-9]+$ ]]; then
|
|
# => [:[<mtu>][:<macaddr>]
|
|
[[ -n "$arg1" ]] && grep -q "^MTUBytes=$arg1$" "$network_file"
|
|
[[ -n "$arg2" ]] && grep -q "^MACAddress=$arg2$" "$network_file"
|
|
else
|
|
# => [:[<dns1>][:<dns2>]]
|
|
grep -q "^DNS=$arg1$" "$network_file"
|
|
[[ -n "$arg2" ]] && grep -q "^DNS=$arg2$" "$network_file"
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
# Check if the generated .network files match the expected stored ones
|
|
TEST_DATA="$(dirname "$0")/testdata/test-network-generator-conversion"
|
|
for f in "$TEST_DATA"/test-*.input; do
|
|
fname="${f##*/}"
|
|
out="$(mktemp --directory "${WORK_DIR:?}/${fname%%.input}.XXX")"
|
|
|
|
# shellcheck disable=SC2046
|
|
"$GENERATOR_BIN" --root "$out" -- $(cat "$f")
|
|
|
|
if ! diff -u "$out/run/systemd/network" "${f%.input}.expected"; then
|
|
echo "**** Unexpected output for $f"
|
|
exit 1
|
|
fi
|
|
|
|
rm -rf "${out:?}"
|
|
done
|
|
|
|
# Now generate bunch of .network units on the fly and check if they contain expected
|
|
# directives & values
|
|
|
|
# ip={dhcp|on|any|dhcp6|auto6|either6|link6|link-local}
|
|
for dhcp in dhcp on any dhcp6 auto6 either6 link6 link-local off none ibft; do
|
|
check_one_dhcp "ip=$dhcp"
|
|
done
|
|
|
|
# ip=<interface>:{dhcp|on|any|dhcp6|auto6|link6|link-local}[:[<mtu>][:<macaddr>]]
|
|
COMMAND_LINES=(
|
|
"ip=foo:dhcp"
|
|
"ip=bar:dhcp6"
|
|
"ip=linklocal99:link-local"
|
|
"ip=baz1:any:666"
|
|
"ip=baz1:any:128:52:54:00:a7:8f:ac"
|
|
)
|
|
for cmdline in "${COMMAND_LINES[@]}"; do
|
|
check_one_interface_dhcp "$cmdline"
|
|
done
|
|
|
|
# ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft}[:[<mtu>][:<macaddr>]
|
|
# ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft}[:[<dns1>][:<dns2>]]
|
|
COMMAND_LINES=(
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:255.255.255.0:hello-world.local:dummy99:off"
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:24:hello-world.local:dummy99:off"
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:255.255.255.0:hello-world.local:dummy99:off:123"
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:255.255.255.0:hello-world.local:dummy99:off:123:52:54:00:a7:8f:ac"
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:255.255.255.0:hello-world.local:dummy99:off::52:54:00:a7:8f:ac"
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:255.255.255.0:hello-world.local:dummy99:off::"
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:255.255.255.0:hello-world.local:dummy99:off:1.2.3.2"
|
|
"ip=1.2.3.4:2.3.4.5:1.2.3.1:255.255.255.0:hello-world.local:dummy99:off:1.2.3.2:1.2.3.3"
|
|
"ip=192.168.0.2::192.168.0.1:255.255.128.0::foo1:off"
|
|
"ip=192.168.0.2::192.168.0.1:17::foo1:off"
|
|
"ip=10.0.0.1:::255.255.255.0::foo99:off"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off"
|
|
"ip=[fdef:c400:bd01:1096::2]:[fdef:c400:bd01:1096::99]::64::ipv6:off"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off:666"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off:666:52:54:00:a7:8f:ac"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off::52:54:00:a7:8f:ac"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off::"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off:[fdef:c400:bd01:1096::aaaa]"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off:[fdef:c400:bd01:1096::aaaa]:[fdef:c400:bd01:1096::bbbb]"
|
|
"ip=:::::dhcp99:any"
|
|
"ip=:::::dhcp99:dhcp6:666"
|
|
"ip=:::::dhcp99:dhcp6:666:52:54:00:a7:8f:ac"
|
|
"ip=:::::dhcp99:dhcp6:10.0.0.128"
|
|
"ip=:::::dhcp99:dhcp6:10.0.0.128:10.0.0.129"
|
|
"ip=:::::dhcp99:dhcp6:10.0.0.128:[fdef:c400:bd01:1096::bbbb]"
|
|
"ip=::::::any"
|
|
"ip=::::::ibft"
|
|
)
|
|
for cmdline in "${COMMAND_LINES[@]}"; do
|
|
check_one_long "$cmdline"
|
|
done
|
|
|
|
INVALID_COMMAND_LINES=(
|
|
"ip=foo"
|
|
"ip=:::::::"
|
|
"ip=:::::::foo"
|
|
"ip=10.0.0:::255.255.255.0::foo99:off"
|
|
"ip=10.0.0.1:::255.255.255::foo99:off"
|
|
"ip=10.0.0.1:::255.255.255.0:invalid_hostname:foo99:off"
|
|
"ip=10.0.0.1:::255.255.255.0::verylonginterfacename:off"
|
|
"ip=:::::dhcp99:dhcp6:4294967296"
|
|
"ip=:::::dhcp99:dhcp6:-1"
|
|
"ip=:::::dhcp99:dhcp6:666:52:54:00"
|
|
"ip=fdef:c400:bd01:1096::2::[fdef:c400:bd01:1096::1]:64::ipv6:off:[fdef:c400:bd01:1096::aaaa]"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off:foo"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off:[fdef:c400:bd01:1096::aaaa]:foo"
|
|
"ip=[fdef:c400:bd01:1096::2]::[fdef:c400:bd01:1096::1]:64::ipv6:off:[fdef:c400:bd01:1096::aaaa]:[fdef:c400:bd01:1096::bbbb]:"
|
|
"ip=:::::dhcp99:dhcp6:10.0.0.128:10.0.0.129:"
|
|
"ip=:::::dhcp99:dhcp6:10.0.0.128:[fdef:c400:bd01:1096::bbbb]:"
|
|
)
|
|
for cmdline in "${INVALID_COMMAND_LINES[@]}"; do
|
|
(! SYSTEMD_LOG_LEVEL=debug SYSTEMD_PROC_CMDLINE="$cmdline" "$GENERATOR_BIN" --root "$WORK_DIR")
|
|
done
|