publish-ip.sh

1 files changed, 38 insertions, 0 deletions

diff --git a/src/publish-ip.sh b/src/publish-ip.sh
new file mode 100644
index 0000000..7da41b9
--- /dev/null
+++ b/src/publish-ip.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+
+determine_lan_ip()
+{
+  ip -4 -oneline addr show |
+    while read n dev _ ip rest; do
+      case "$rest" in
+        *'scope global'*) ;;
+        *) continue ;;
+      esac
+      case "$ip" in
+        192.168.10.1/24) continue ;;
+      esac
+      echo ${ip%/*}
+      break
+    done
+}
+
+ssh_cryptonomic_net__known_hosts()
+{
+cat <<'END'
+|1|ORqVRkqd0LO25vHCB0LezHAgwRE=|ih7EYLpvg9jpU86/0Od0N8Ur36c= ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBHkIETz7wmKd7TZgb3NPeUElZDjZqw2VPd8yDOBTj5UzUBmcgCyE1oCS3Oe1iO9zJWpPtG0QyYa29lKi+vN6pN4=
+END
+}
+
+tmpfile=$(mktemp) || exit 1
+trap 'rm -f "$tmpfile"' EXIT
+ssh_cryptonomic_net__known_hosts > "$tmpfile"
+
+lan_ip=$(determine_lan_ip)
+
+if [ "$lan_ip" ]; then
+  set -- lan "$lan_ip"
+else
+  set --
+fi
+
+ssh -o GlobalKnownHostsFile="$tmpfile" -i /var/cache/kiki/config/ssh_host_rsa_key dyndns@ssh.cryptonomic.net "$@"