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|
#!/bin/bash
graph=$(
tinc --net=$1 dump digraph
)
pre=$(
printf '%s\n' "${graph}" \
| sed '
/ -> /,$ d
'
)
post=$(
printf '%s\n' "${graph}" \
| sed '
1,/ -> /d
/ -> /d
'
)
inter=$(
printf '%s\n' "${graph}" \
| sed -n '
/ -> /p
' \
| while read -r a b c d; do
mapfile -t e < <(
printf '%s\n' "$a" "$c" \
| sort
)
b4=$(
printf '%s\n' "$d" \
| base64 -w0
)
printf '%s %s %s %s %s\n' \
"${a}" "${c}" "${b4}" "${e[0]}" "${e[1]}"
done \
| sort -k4,4 -k5,5 -k3,3 \
| uniq -cf2 \
| while read -r c a b b4 _ _; do
printf '%s -> %s ' "${a}" "${b}"
printf '%s\n' "${b4}" \
| base64 -d \
| if [ "${c}" = '1' ]; then
cat
else
sed 's@];$@, dir=both\0@'
fi
done
)
if printf '%s\n' "${graph}" \
| grep -qwF backup \
&& printf '%s\n' "${graph}" \
| greo -qwF backup_lo; then
extra='
"backup" -> "backup_lo" [style=dashed, constraint=false, dir=none];'
else
extra=''
fi
{
printf '%s\n' "${pre}" "${inter}" "${extra}" "${post}"
} \
| if [ $# -eq 0 ]; then
/usr/bin/dot -Tpng
else
cat
fi
|
