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base-files: ipcalc.sh: Add tests for unroutable, etc

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See RFC-1918, RFC-3927, and RFC-1122.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
This commit is contained in:
Philip Prindeville 2023-12-10 23:35:57 -07:00
parent dd256099c3
commit e906ccfc8c
1 changed files with 70 additions and 0 deletions
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70
package/base-files/files/lib/functions/ipv4.sh
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@ -1,5 +1,23 @@
uint_max=4294967295
d_10_0_0_0=167772160
d_10_255_255_255=184549375
d_172_16_0_0=2886729728
d_172_31_255_255=2887778303
d_192_168_0_0=3232235520
d_192_168_255_255=3232301055
d_169_254_0_0=2851995648
d_169_254_255_255=2852061183
d_127_0_0_0=2130706432
d_127_255_255_255=2147483647
d_224_0_0_0=3758096384
d_239_255_255_255=4026531839
# check that $1 is only base 10 digits, and that it doesn't
# exceed 2^32-1
assert_uint32() {
@ -196,3 +214,55 @@ netmask2prefix() {
export -- "$__var=$__bits"
}
# check the argument as being an rfc-1918 address
is_rfc1918() {
local __var="$1" __x="$2" __val=0
assert_uint32 "$__x" || return 1
if [ $d_10_0_0_0 -le $__x ] && [ $__x -le $d_10_255_255_255 ]; then
__val=1
elif [ $d_172_16_0_0 -le $__x ] && [ $__x -le $d_172_31_255_255 ]; then
__val=1
elif [ $d_192_168_0_0 -le $__x ] && [ $__x -le $d_192_168_255_255 ]; then
__val=1
fi
export -- "$__var=$__val"
}
# check the argument as being an rfc-3927 address
is_rfc3927() {
local __var="$1" __x="$2" __val=0
assert_uint32 "$__x" || return 1
if [ $d_169_254_0_0 -le $__x ] && [ $__x -le $d_169_254_255_255 ]; then
__val=1
fi
export -- "$__var=$__val"
}
# check the argument as being an rfc-1122 loopback address
is_loopback() {
local __var="$1" __x="$2" __val=0
assert_uint32 "$__x" || return 1
if [ $d_127_0_0_0 -le $__x ] && [ $__x -le $d_127_255_255_255 ]; then
__val=1
fi
export -- "$__var=$__val"
}
# check the argument as being a multicast address
is_multicast() {
local __var="$1" __x="$2" __val=0
assert_uint32 "$__x" || return 1
if [ $d_224_0_0_0 -le $__x ] && [ $__x -le $d_239_255_255_255 ]; then
__val=1
fi
export -- "$__var=$__val"
}