new tools

2 files changed, 49 insertions, 0 deletions

diff --git a/src/list-global-interfaces-json b/src/list-global-interfaces-json
new file mode 100755
index 0000000..bc23fab
--- /dev/null
+++ b/src/list-global-interfaces-json
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+addr_select ()
+{
+    jq -r \
+'
+    .[] | {
+            ifname,
+            addr_info: .addr_info | .[] | select(.scope == "global")
+                                        | {
+                                            local,
+                                            prefixlen
+                                          }
+          }
+'
+}
+
+ADDR_FAMILY=
+while [ $# -gt 0 ]
+do
+    case "$1" in
+        -4 | -6 ) ADDR_FAMILY=$1 ;;
+        * ) exit 1 ;;
+    esac
+    shift
+done
+
+/sbin/ip ${ADDR_FAMILY} -j addr | addr_select
diff --git a/src/local-keyscan b/src/local-keyscan
new file mode 100755
index 0000000..8fcb69f
--- /dev/null
+++ b/src/local-keyscan
@@ -0,0 +1,21 @@
+#!/bin/bash
+set -e
+set -o pipefail
+
+extract_local_ip ()
+{
+    sed -n -E -e 's/^[0-9]+ bytes from (fe80::[a-f:0-9]+(%[^ ]*)?): .*/\1/ip'
+}
+
+local_ips ()
+{
+    ping -n -w1 ff02::1${INTERFACE:+%$INTERFACE} 2>/dev/null | extract_local_ip
+}
+
+local_known_hosts ()
+{
+    ssh-keyscan -t ed25519 -f <(local_ips) 2>/dev/null
+}
+
+INTERFACE=$1
+local_known_hosts