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authorJohn Estabrook <jestabro@sentrium.io>2019-08-31 17:25:07 -0500
committerJohn Estabrook <jestabro@sentrium.io>2019-08-31 18:09:54 -0500
commit86d1291ec5323e921a0f995211e223bf1f7dcdff (patch)
tree05d26dfd75a8e0b618980838b229ca14223ed5a2 /src/helpers/vyos-boot-config-loader.py
parent0e032f5df4f567195abc7562e8cf6b1164eeec7b (diff)
downloadvyos-1x-86d1291ec5323e921a0f995211e223bf1f7dcdff.tar.gz
vyos-1x-86d1291ec5323e921a0f995211e223bf1f7dcdff.zip
[boot-config-loader] T1622: Add failsafe and back trace
Diffstat (limited to 'src/helpers/vyos-boot-config-loader.py')
-rwxr-xr-xsrc/helpers/vyos-boot-config-loader.py101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/helpers/vyos-boot-config-loader.py b/src/helpers/vyos-boot-config-loader.py
new file mode 100755
index 000000000..06c95765f
--- /dev/null
+++ b/src/helpers/vyos-boot-config-loader.py
@@ -0,0 +1,101 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2019 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later 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
+import sys
+import subprocess
+import traceback
+
+from vyos.configsession import ConfigSession, ConfigSessionError
+from vyos.configtree import ConfigTree
+
+STATUS_FILE = '/tmp/vyos-config-status'
+TRACE_FILE = '/tmp/boot-config-trace'
+
+session = ConfigSession(os.getpid(), 'vyos-boot-config-loader')
+env = session.get_session_env()
+
+default_file_name = env['vyatta_sysconfdir'] + '/config.boot.default'
+
+if len(sys.argv) < 1:
+ print("Must be called with argument.")
+ sys.exit(1)
+else:
+ file_name = sys.argv[1]
+
+def write_config_status(status):
+ with open(STATUS_FILE, 'w') as f:
+ f.write('{0}\n'.format(status))
+
+def trace_to_file(trace_file_name):
+ with open(trace_file_name, 'w') as trace_file:
+ traceback.print_exc(file=trace_file)
+
+def failsafe():
+ try:
+ with open(default_file_name, 'r') as f:
+ config_file = f.read()
+ except Exception as e:
+ print("Catastrophic: no default config file "
+ "'{0}'".format(default_file_name))
+ sys.exit(1)
+
+ config = ConfigTree(config_file)
+ if not config.exists(['system', 'login', 'user', 'vyos',
+ 'authentication', 'encrypted-password']):
+ print("No password entry in default config file;")
+ print("unable to recover password for user 'vyos'.")
+ sys.exit(1)
+ else:
+ passwd = config.return_value(['system', 'login', 'user', 'vyos',
+ 'authentication',
+ 'encrypted-password'])
+
+ cmd = ("useradd -s /bin/bash -G 'users,sudo' -m -N -p '{0}' "
+ "vyos".format(passwd))
+ try:
+ subprocess.check_call(cmd, shell=True)
+ except subprocess.CalledProcessError as e:
+ sys.exit("{0}".format(e))
+
+ with open('/etc/motd', 'a+') as f:
+ f.write('\n\n')
+ f.write('!!!!!\n')
+ f.write('There were errors loading the initial configuration;\n')
+ f.write('please examine the errors in {0} and correct.'
+ '\n'.format(TRACE_FILE))
+ f.write('!!!!!\n\n')
+
+try:
+ with open(file_name, 'r') as f:
+ config_file = f.read()
+except Exception as e:
+ write_config_status(1)
+ failsafe()
+ trace_to_file(TRACE_FILE)
+ sys.exit("{0}".format(e))
+
+try:
+ session.load_config(file_name)
+ session.commit()
+ write_config_status(0)
+except ConfigSessionError as e:
+ write_config_status(1)
+ failsafe()
+ trace_to_file(TRACE_FILE)
+ sys.exit(1)