From 6be613d07ddc6d0b1e4b73f93c0fa1c0b1f7ba10 Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Sun, 24 Nov 2013 03:53:39 +0100
Subject: Postfix master (nullmailer) configuration
We use a dedicated instance for each role: MDA, MTA out, MX, etc.
---
lib/postmap | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 94 insertions(+)
create mode 100644 lib/postmap
(limited to 'lib/postmap')
diff --git a/lib/postmap b/lib/postmap
new file mode 100644
index 0000000..8c6c319
--- /dev/null
+++ b/lib/postmap
@@ -0,0 +1,94 @@
+#!/usr/bin/python
+#
+# Create or update postfix's alias and lookup tables through ansible
+# playbooks.
+#
+# Copyright 2013 Guilhem Moulin <guilhem@fripost.org>
+#
+# Licensed under the GNU GPL version 3 or higher.
+#
+
+try:
+ import selinux
+ HAVE_SELINUX=True
+except ImportError:
+ HAVE_SELINUX=False
+
+
+# Look up for the file suffix corresponding to 'db'. If 'db' is unset,
+# pick the default_detabase_type of the given instance instead.
+def file_suffix(instance, db):
+ if not db:
+ cmd = [ os.path.join(os.sep, 'usr', 'sbin', 'postconf') ]
+ if instance:
+ config = os.path.join(os.sep, 'etc', 'postfix-%s' % instance)
+ cmd.extend([ '-c', config ])
+ cmd.extend([ '-h', 'default_database_type' ])
+ null = open (os.devnull, 'wb')
+ db = subprocess.check_output(cmd, stderr=null).rstrip()
+ null.closed
+
+ # See postmap(1) and postalias(1)
+ suffixes = { 'btree': 'db', 'cdb': 'cdb', 'hash': 'db' }
+ return suffixes[db]
+
+
+# Compile the given (alias/lookup) table
+def compile(cmd, instance, db, src):
+ cmd = [ os.path.join(os.sep, 'usr', 'sbin', cmd) ]
+ if instance:
+ config = os.path.join(os.sep, 'etc', 'postfix-%s' % instance)
+ cmd.extend([ '-c', config ])
+
+ if db:
+ src = "%s:%s" % (db,src)
+
+ cmd.append(src)
+ subprocess.check_output(cmd, stderr=subprocess.STDOUT)
+
+
+def main():
+ module = AnsibleModule(
+ argument_spec = dict(
+ src = dict( required=True ),
+ db = dict( choices=['btree','cdb','hash'] ),
+ cmd = dict( choices=['postmap','postalias'], default='postmap' ),
+ instance = dict( required=False )
+ ),
+ add_file_common_args=True,
+ supports_check_mode=True
+ )
+
+ params = module.params
+ src = params['src']
+ cmd = params['cmd']
+
+ if os.path.isabs(src):
+ src = src
+ else:
+ module.fail_json(msg="absolute paths are required")
+
+ if not os.path.exists(src):
+ module.fail_json(src=src, msg="no such file")
+
+ try:
+ dst = "%s.%s" % (src, file_suffix(params['instance'], params['db']))
+ params['dest'] = dst
+ file_args = module.load_file_common_arguments(params)
+
+ changed = False
+ msg = None
+ if not os.path.exists(dst) or os.path.getmtime(dst) <= os.path.getmtime(src):
+ changed = True
+ if not module.check_mode:
+ msg = compile( params['cmd'], params['instance'], params['db'], src)
+ except subprocess.CalledProcessError, e:
+ module.fail_json(rv=e.returncode, msg=e.output.rstrip())
+
+ changed = module.set_file_attributes_if_different(file_args, changed)
+ module.exit_json(changed=changed, msg=msg)
+
+
+# this is magic, see lib/ansible/module_common.py
+#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
+main()
--
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