Add script to generate fingerprints for existing keys in api-db

helpers/577-api-db-generate-ssh-key-fingerprints.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+# disable globbing
+set -f;
+# set field separator to NL (only)
+IFS=$'\n';
+# get all ssh keys from api-db into a bash array
+SSHKEY_RECORDS=( $(mysql -u$MARIADB_USER -p$MARIADB_PASSWORD -h$HOSTNAME $MARIADB_DATABASE --batch -sse "select id, key_type, key_value from ssh_key") );
+
+for SSHKEY_RECORD in "${SSHKEY_RECORDS[@]}";
+do
+  RECORD_ID=$(awk '{print $1}' <<< "$SSHKEY_RECORD");
+  SSHKEY=$(awk '{print $2, $3}' <<< "$SSHKEY_RECORD");
+  FINGERPRINT=$(ssh-keygen -lE sha256 -f - <<< "$SSHKEY" | awk '{print $2}');
+  mysql -u$MARIADB_USER -p$MARIADB_PASSWORD -h$HOSTNAME $MARIADB_DATABASE -e "UPDATE ssh_key SET key_fingerprint = '$FINGERPRINT' WHERE id = $RECORD_ID";
+done;