1 files changed, 52 insertions, 0 deletions
diff --git a/cloudinit/config/cc_keys_to_console.py b/cloudinit/config/cc_keys_to_console.py
new file mode 100644
index 00000000..40758198
--- /dev/null
+++ b/cloudinit/config/cc_keys_to_console.py
@@ -0,0 +1,52 @@
+# vi: ts=4 expandtab
+#
+#    Copyright (C) 2011 Canonical Ltd.
+#    Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
+#
+#    Author: Scott Moser <scott.moser@canonical.com>
+#    Author: Juerg Haefliger <juerg.haefliger@hp.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 3, as
+#    published by the Free Software Foundation.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+
+from cloudinit.settings import PER_INSTANCE
+from cloudinit import util
+
+frequency = PER_INSTANCE
+
+# This is a tool that cloud init provides
+helper_tool = '/usr/lib/cloud-init/write-ssh-key-fingerprints'
+
+
+def handle(name, cfg, cloud, log, _args):
+    if not os.path.exists(helper_tool):
+        log.warn(("Unable to activate transform %s,"
+                  " helper tool not found at %s"), name, helper_tool)
+        return
+
+    fp_blacklist = util.get_cfg_option_list(cfg,
+                                            "ssh_fp_console_blacklist", [])
+    key_blacklist = util.get_cfg_option_list(cfg,
+                                             "ssh_key_console_blacklist",
+                                              ["ssh-dss"])
+
+    try:
+        cmd = [helper_tool]
+        cmd.append(','.join(fp_blacklist))
+        cmd.append(','.join(key_blacklist))
+        (stdout, _stderr) = util.subp(cmd)
+        util.write_file(cloud.paths.join(False, '/dev/console'), stdout)
+    except:
+        log.warn("Writing keys to /dev/console failed!")
+        raise