Merge branch 'develop' of github.com:saltstack/salt into develop

salt/modules/debconf.py

@@ -0,0 +1,100 @@
+'''
+Support for Debconf
+'''
+
+import os
+import re
+import tempfile
+
+
+def _unpack_lines(out):
+    rexp = ('(?ms)'
+            '^(?P<package>[^#]\S+)[\t ]+'
+            '(?P<question>\S+)[\t ]+'
+            '(?P<type>\S+)[\t ]+'
+            '(?P<value>[^\n]*)$')
+    lines = re.findall(rexp, out)
+    return lines
+
+
+def __virtual__():
+    '''
+    Confirm this module is on a Debian based system
+    '''
+
+    return 'debconf' if __grains__['os'] in ['Debian', 'Ubuntu'] else False
+
+
+def get_selections(fetchempty=True):
+    '''
+    Answers to debconf questions for all packages in the following format::
+
+        {'package': [['question', 'type', 'value'], ...]}
+
+    CLI Example::
+
+        salt '*' debconf.get_selections
+    '''
+    selections = {}
+    cmd = 'debconf-get-selections'
+
+    out = __salt__['cmd.run_stdout'](cmd)
+
+    lines = _unpack_lines(out)
+
+    for line in lines:
+        package, question, type, value = line
+        if fetchempty or value:
+            (selections
+                .setdefault(package, [])
+                .append([question, type, value]))
+
+    return selections
+
+
+def show(name):
+    '''
+    Answers to debconf questions for a package in the following format::
+
+        [['question', 'type', 'value'], ...]
+
+    If debconf doesn't know about a package, we return None.
+
+    CLI Example::
+
+        salt '*' debconf.show <package name>
+    '''
+
+    result = None
+
+    selections = get_selections()
+
+    result = selections.get(name)
+    return result
+
+
+def set(package, question, type, value, *extra):
+    '''
+    Set answers to debconf questions for a package.
+
+    CLI Example::
+
+        salt '*' debconf.set <package> <question> <type> <value> [<value> ...]
+    '''
+
+    if extra:
+        value = ' '.join((value,) + tuple(extra))
+
+    fd, fname = tempfile.mkstemp(prefix="salt-")
+
+    line = "{0} {1} {2} {3}".format(package, question, type, value)
+    os.write(fd, line)
+    os.close(fd)
+
+    cmd = 'debconf-set-selections {0}'.format(fname)
+
+    out = __salt__['cmd.run_stdout'](cmd)
+
+    os.unlink(fname)
+
+    return True