1 files changed, 28 insertions, 0 deletions
diff --git a/retiolum/bin/list-known-public-addresses b/retiolum/bin/list-known-public-addresses
new file mode 100755
index 00000000..d157cea4
--- /dev/null
+++ b/retiolum/bin/list-known-public-addresses
@@ -0,0 +1,28 @@
+#! /bin/sh
+#
+# printf '%s %s\n' hostname IP-address for each known public retiolum address
+#
+set -eu
+
+cd /etc/tinc/retiolum/hosts
+
+grep --with-filename '^Address' * |
+sed '
+  # filter "%s %s %s\n" hostname var val
+  s/: */ /
+  s/ *= */ /
+  # filter "%s %s\n" hostname address
+  s/ Address \([a-zA-Z0-9.:_]*\) \?.*/ \1/
+  T
+  # prepare hostname lookup
+  /:/!{/ [0-9.]*$/!{s/ / `dig +short /;s/$/` \&/}}
+  s/^/echo /
+  $s/$/\nwait/
+  # perform hostname lookup
+' | sh | sed '
+  # drop private IPv4 addresses
+  / 10\./d
+  / 172\.\(1[6-9]\|2[0-9]\|3[01]\)\./d
+  / 192\.168\./d
+  # TODO drop private IPv6 addresses
+'