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|
#!/bin/bash
hosts=(
'router 192.168.0.13'
'rpi3 192.168.1.3'
)
tmp_dir=$(mktemp -d)
trap 'rm -rf --one-file-system "${tmp_dir:?}"' EXIT
if [ -f "infos" ]; then
cp "infos" "${tmp_dir}/infos"
else
for host in "${hosts[@]}"; do
name="${host% *}"
addr="${host##* }"
ssh "${addr}" '
ip -o addr | sed "s/^/ip /"
sudo iptables-save | sed "s/^/ip4tables /"
sudo ip6tables-save | sed "s/^/ip6tables /"
sed "s/^[^#]/tayga \0/;t;d" /etc/tayga.conf
' 2>/dev/null \
| sed '
s/^\S\+ /\0'"${name}"' /
' \
>> "${tmp_dir}/infos"
done
fi
cp "${tmp_dir}/infos" "infos"
sed '
s/^ip //
t ip
s/^ip\([64]\)tables /\1 /
t iptables
s/^tayga //
t tayga
s/^/>> unknown: >>/
w /dev/stderr
d
:iptables
w '"${tmp_dir}"'/iptables
d
:ip
s/\s*\\.*$//
s/\s\+/ /g
/ scope link/d
s/^\(\S\+ \)[0-9]\+: /\1/
/^\S\+ lo /d
h
s/^\(\S\+ \S\+\) .*$/\1/
w '"${tmp_dir}"'/interfaces
s/^\(\S\+\) \(\S\+\)$/"\0" [label = "\2", fontcolor="#00ff00"];/
w '"${tmp_dir}/print-content"'
g
s/^\(\S\+\)\( \S\+\) .*$/"\1" -> "\1\2";/
w '"${tmp_dir}/print-content"'
g
s/^\(\S\+ \S\+\) \S\+ \(\S\+\) .*$/"\1" -> "\2";/
w '"${tmp_dir}/print-content"'
g
s/^\S\+ \S\+ \(\S\+\) \(\S\+\) .*$/\1 \2/
w '"${tmp_dir}"'/ips
d
:tayga
w '"${tmp_dir}"'/tayga
d
' "${tmp_dir}/infos"
printf '%s\n' "${hosts[@]}" \
| sed '
s/^\(.*\) \S\+$/"\1" [fontcolor="#800000"];/
' \
>> "${tmp_dir}/print-content"
sort "${tmp_dir}/tayga" |
sed '
:a
N
s/^\(\S\+ \)\(.*\S\)\s*\n\1\([^\n]*\S\)\s*$/\1\2\\\3/
ta
P
D
' | tee /dev/stderr \
| sed '
h
s/^\(\S\+ \)\(.*\\\)\?dynamic-pool \([^\\[:space:]]\+\)\\\(.*\\\)\?prefix \([^\\[:space:]]\+\)\(\\.*\)\?$/"\3" -> "\5" [dir=both, weight=0, color="#0000ff"];/
w '"${tmp_dir}/tayga-print-content"'
g
s/^\(\S\+\) \(.*\\\)\?dynamic-pool \([^\\[:space:]]\+\)\\\(.*\\\)\?tun-device \([^\\[:space:]]\+\)\(\\.*\)\?$/"\1 \5" -> "\3" [color="#808080"];/
w '"${tmp_dir}/tayga-print-content"'
g
s/^\(\S\+\) \(.*\\\)\?prefix \([^\\[:space:]]\+\)\\\(.*\\\)\?tun-device \([^\\[:space:]]\+\)\(\\.*\)\?$/"\1 \5" -> "\3" [color="#000000"];/
w '"${tmp_dir}/tayga-print-content"'
g
s/^\S\+ \(.*\\\)\?prefix \([^\\[:space:]]\+\)\(\\.*\)\?$/"\2" [fontcolor="#a0a000"];/
w '"${tmp_dir}/tayga-print-content"'
g
s/^\S\+ \(.*\\\)\?dynamic-pool \([^\\[:space:]]\+\)\(\\.*\)\?$/"\2" [fontcolor="#808000"];/
w '"${tmp_dir}/tayga-print-content"'
g
p
d
'
for name in ips print-content; do
cat "${tmp_dir}/tayga-${name}" >> "${tmp_dir}/${name}"
rm "${tmp_dir}/tayga-${name}"
done
while read -r version address; do
case ${version} in
inet)
printf '"%s" [fontcolor="#000080"];\n' "${address}" >> "${tmp_dir}/print-content"
;;
inet6)
printf '"%s" [fontcolor="#0000ff"];\n' "${address}" >> "${tmp_dir}/print-content"
;;
esac
subnet_mask=${address##*/}
if [ -z "${subnet_mask}" ] || [ "${subnet_mask}" = "${address}" ]; then
continue;
fi
case ${version} in
inet)
printf '"%s" [fontcolor="#000080"];\n' "${address}" >> "${tmp_dir}/print-content"
if [ "${subnet_mask}" = 32 ]; then
continue
fi
base_address=$(
sipcalc "${address}" | \
sed '
s/^Network address\s\+- \+\(\S\+\)\s*$/\1/
t
s/^Network mask (bits)\s\+- \+\([0-9]\+\)\s*$/\1/
t
d
' | \
sed '
N
s,\n,/,
'
)
;;
inet6)
if [ "${subnet_mask}" = 128 ]; then
continue
fi
base_address=$(
sipcalc "${address}" | \
sed -n '
s/^Subnet\s\+prefix\s\+(masked)\s\+-\s\+\(\S\+\)\s*$/\1/
T
s,0\(:0\)*/,:/,
p
'
)
;;
*)
continue
;;
esac
printf '%s %s\n' \
"${address}" \
"${base_address}"
done \
< "${tmp_dir}/ips" \
| sort -u \
| sort -k2,2 -k1,1 \
| uniq -Df1 \
| sed '
s/^\(\S\+\) \(\S\+\)$/"\1" -> "\2";\n/
' \
| tee -a "${tmp_dir}/print-content" \
| sed -n '
s/^".*" -> "\(\S\+\)";$/\1/
T
/:/ {
s/.*/"\0" [fontcolor="#a0a000"];/
p
}
/\./ {
s/.*/"\0" [fontcolor="#808000"];/
p
}
' \
>> "${tmp_dir}/print-content"
grep '[46] \S\+ :FORWARD ACCEPT ' "${tmp_dir}/iptables" | \
while read -r ipver host _; do
grep "^${host} " "${tmp_dir}/interfaces"
done | \
sort -u > \
"${tmp_dir}/ifs-routed"
join -j1 "${tmp_dir}/ifs-routed" "${tmp_dir}/ifs-routed" \
| grep -v ' \(\S\+\) \1$' \
| sed '
s/^.*$/4 \0\n6 \0/
' \
> "${tmp_dir}/routes"
grep -vwF "$(
grep -vwF -- '-m conntrack' "${tmp_dir}/iptables" | \
grep -v '^4 .*/32 ' | \
grep -v '^6 .*/128 ' | \
sed -n '
s/^\([46]\) \(\S\+\) \(.* \)\?-A FORWARD \(.* \)\?-i \(\S\+\) \(.* \)\?-j DROP/\1 \2 \5/
T
p
'
)" "${tmp_dir}/routes" \
> "${tmp_dir}/routes.new"
mv "${tmp_dir}/routes.new" "${tmp_dir}/routes"
grep -vwF -- '-m conntrack' "${tmp_dir}/iptables" | \
grep -v '^4 \S\+ .*/32 ' | \
grep -v '^6 \S\+ .*/128 ' | \
sed '
s/^\([46]\) \(\S\+\) \(.* \)\?-A FORWARD \(.* \)\?-i \(\S\+\) \(.* \)\?-o \(\S\+\) \(.* \)\?-j ACCEPT/\1 \2 \5 \7/
t
s/^\([46]\) \(\S\+\) \(.* \)\?-A FORWARD \(.* \)\?-o \(\S\+\) \(.* \)\?-i \(\S\+\) \(.* \)\?-j ACCEPT/\1 \2 \7 \5/
t
d
' \
>> "${tmp_dir}/routes"
sed '
s/^\(\S\+ \S\+\) \(\S\+\) \(\S\+\)$/f \1 \2 \3\nr \1 \3 \2/
' "${tmp_dir}/routes" \
| while read -r dir ip host from to; do
printf '%s %s %s %s %s %s\n' \
"${dir}" \
"${from}" \
"${to}" \
"${host}" \
"${ip}" \
"$(
printf '%s\n' "${from}" "${to}" | \
sort | \
tr -d '\n'
)"
done \
| sort -k2,6 -k1,1 \
> "${tmp_dir}/routes.new"
uniq -uf1 "${tmp_dir}/routes.new" \
| grep '^f ' \
> "${tmp_dir}/routes"
uniq -df1 "${tmp_dir}/routes.new" \
| sed 's/^[fr] /b /' \
| sort -k4,6 -k1,3 \
| uniq -f3 \
>> "${tmp_dir}/routes"
rm "${tmp_dir}/routes.new"
sed '
s/^f \(\S\+\) \(\S\+\) \(\S\+\) 4 \S\+$/"\3 \1" -> "\3 \2" [weight=0, color="#808080"];\n/
t
s/^f \(\S\+\) \(\S\+\) \(\S\+\) 6 \S\+$/"\3 \1" -> "\3 \2" [weight=0, color="#000000"];\n/
t
s/^b \(\S\+\) \(\S\+\) \(\S\+\) 4 \S\+$/"\3 \1" -> "\3 \2" [dir=both, weight=0, color="#808080"];\n/
t
s/^b \(\S\+\) \(\S\+\) \(\S\+\) 6 \S\+$/"\3 \1" -> "\3 \2" [dir=both, weight=0, color="#000000"];\n/
t
d
' "${tmp_dir}/routes" \
>> "${tmp_dir}/print-content"
sort -u "${tmp_dir}/print-content" | cat -n
{
echo 'digraph network {'
echo 'rankdir=LR;'
sort -u "${tmp_dir}/print-content"
echo '}'
} | \
dot -Tpng -onetwork.png
|
