From 26de82e40c38cb1f09fb1e232a12b09c131a7573 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Tue, 3 May 2016 13:03:33 +0200
Subject: publish-ip.sh

---
 Makefile          |  2 +-
 src/publish-ip.sh | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 src/publish-ip.sh

diff --git a/Makefile b/Makefile
index 101e521..7e3fde1 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ samizdat-pinentry: src/samizdat-pinentry.c
 wait_for_files: src/wait_for_files.c
 	$(CC) $(CFLAGS)  $< -o $@
 
-bin_programs=$(addprefix src/, xorriso-usb.sh btrfs-functions.sh btrfs-receive-root.sh btrfs-send-root.sh var.sh grub-efi.sh keygen.sh initrd.sh qemu.sh btarfs dnsmasq-dhcp-script.sh samizdat-password-agent samizdat-gpg-agent) samizdat-paths.sh ${cc_files}
+bin_programs=$(addprefix src/, xorriso-usb.sh btrfs-functions.sh btrfs-receive-root.sh btrfs-send-root.sh var.sh grub-efi.sh keygen.sh initrd.sh qemu.sh btarfs dnsmasq-dhcp-script.sh samizdat-password-agent samizdat-gpg-agent publish-ip.sh) samizdat-paths.sh ${cc_files}
 
 initrd_files:=$(wildcard src/initrd/*) dynmenu samizdat-pinentry wait_for_files
 initramfs_conf_files:=$(wildcard initramfs-tools/*)
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 "$@"
-- 
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