diff -up yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.conf.orig yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.conf

--- yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.conf.orig	2017-10-27 17:30:16.579550073 +0200

+++ yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.conf	2017-10-27 17:30:16.579550073 +0200

@@ -0,0 +1,3 @@

+[main]

+enabled = 1

+actiondir = /etc/yum/pre-actions/

diff -up yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.py.orig yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.py

--- yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.py.orig	2017-10-27 17:30:16.579550073 +0200

+++ yum-utils-1.1.31/plugins/pre-transaction-actions/pre-transaction-actions.py	2017-10-27 17:30:16.579550073 +0200

@@ -0,0 +1,164 @@

+# This program is free software; you can redistribute it and/or modify

+# it under the terms of the GNU General Public License as published by

+# the Free Software Foundation; either version 2 of the License, or

+# (at your option) any later version.

+#

+# 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 Library General Public License for more details.

+#

+# You should have received a copy of the GNU General Public License

+# along with this program; if not, write to the Free Software

+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

+

+# Copyright 2008 Red Hat, Inc

+# written by Seth Vidal <skvidal@fedoraproject.org>

+

+"""

+This plugin runs actions prior to the transaction based on the content of the

+transaction.

+"""

+

+

+from yum.plugins import TYPE_CORE

+from yum.constants import *

+import yum.misc

+from yum.parser import varReplace

+from yum.packages import parsePackages

+import fnmatch

+import re

+import os

+import glob

+import shlex

+

+requires_api_version = '2.4'

+plugin_type = (TYPE_CORE,)

+

+def parse_actions(ddir, conduit):

+    """read in .action files from ddir path. 

+       store content in a list of tuples"""

+    action_tuples = [] # (action key, action_state, shell command)

+    action_file_list = []

+    if os.access(ddir, os.R_OK): 

+        action_file_list.extend(glob.glob(ddir + "*.action"))

+

+    if action_file_list:

+        for f in action_file_list:

+            for line in open(f).readlines():

+                line = line.strip()

+                if line and line[0] != "#":

+                    try:

+                        (a_key, a_state, a_command) = line.split(':', 2)

+                    except ValueError,e:

+                        conduit.error(2,'Bad Action Line: %s' % line)

+                        continue

+                    else:

+                        action_tuples.append((a_key, a_state, a_command))

+

+    return action_tuples

+

+def _convert_vars(txmbr, command):

+    """converts %options on the command to their values from the package it

+       is running it for: takes $name, $arch, $ver, $rel, $epoch, 

+       $state, $repoid"""

+    state_dict = { TS_INSTALL: 'install',

+                   TS_TRUEINSTALL: 'install',

+                   TS_OBSOLETING: 'obsoleting',

+                   TS_UPDATE: 'updating',

+                   TS_ERASE: 'remove',

+                   TS_OBSOLETED: 'obsoleted',

+                   TS_UPDATED: 'updated'}

+    try:

+        state = state_dict[txmbr.output_state]

+    except KeyError:

+        state = 'unknown - %s' % txmbr.output_state

+

+    vardict = {'name': txmbr.name,

+               'arch': txmbr.arch,

+               'ver': txmbr.version,

+               'rel': txmbr.release,

+               'epoch': txmbr.epoch,

+               'repoid': txmbr.repoid,

+               'state':  state }

+

+    result = varReplace(command, vardict)

+    return result

+            

+

+def pretrans_hook(conduit):

+    # we have provides/requires for everything

+    # we do not have filelists for erasures

+    # we have to fetch filelists for the package object for installs/updates

+    action_dir = conduit.confString('main','actiondir','/etc/yum/pre-actions/')

+    action_tuples = parse_actions(action_dir, conduit)

+    commands_to_run = {}

+    ts = conduit.getTsInfo()

+    all = ts.getMembers()

+    removes = ts.getMembersWithState(output_states=TS_REMOVE_STATES)

+    installs = ts.getMembersWithState(output_states=TS_INSTALL_STATES)

+    updates = ts.getMembersWithState(output_states=[TS_UPDATE, TS_OBSOLETING])

+

+    for (a_k, a_s, a_c) in action_tuples:

+        #print 'if %s in state %s the run %s' %( a_k, a_s, a_c)

+        if a_s  == 'update':

+            pkgset = updates

+        elif a_s == 'install':

+            pkgset = installs

+        elif a_s == 'remove':

+            pkgset = removes

+        elif a_s == 'any':

+            pkgset = all

+        else:

+            # no idea what this is skip it

+            conduit.error(2,'whaa? %s' % a_s)

+            continue

+

+        if a_k.startswith('/'):

+            if yum.misc.re_glob(a_k):

+                restring = fnmatch.translate(a_k)

+                c_string = re.compile(restring)

+

+            for txmbr in pkgset:

+                matched = False

+                thispo = txmbr.po

+        

+                if not yum.misc.re_glob(a_k):

+                    if a_k in thispo.filelist + thispo.dirlist + thispo.ghostlist:

+                        thiscommand = _convert_vars(txmbr, a_c)

+                        commands_to_run[thiscommand] = 1

+                        matched = True

+                else:

+                    for name in thispo.filelist + thispo.dirlist + thispo.ghostlist:

+                        if c_string.match(name):

+                            thiscommand = _convert_vars(txmbr, a_c)

+                            commands_to_run[thiscommand] = 1

+                            matched = True

+                            break

+                

+                if matched:

+                    break

+            continue

+        

+        if a_k.find('/') == -1: # pkgspec

+            pkgs = [ txmbr.po for txmbr in pkgset ]

+            e,m,u = parsePackages(pkgs, [a_k])

+            if not u:

+                for pkg in e+m:

+                    for txmbr in ts.getMembers(pkgtup=pkg.pkgtup):

+                        thiscommand = _convert_vars(txmbr, a_c)

+                        commands_to_run[thiscommand] = 1

+            continue

+

+    for comm in commands_to_run.keys():

+        try:

+            args = shlex.split(comm)

+        except ValueError, e:

+            conduit.error(2,"command was not parseable: %s" % comm)

+            continue

+        #try

+        conduit.info(2,'Running pre transaction command: %s' % comm)

+        p = os.system(comm)

+        #except?

+

+

diff -up yum-utils-1.1.31/plugins/pre-transaction-actions/sample.action.orig yum-utils-1.1.31/plugins/pre-transaction-actions/sample.action

--- yum-utils-1.1.31/plugins/pre-transaction-actions/sample.action.orig	2017-10-27 17:30:16.579550073 +0200

+++ yum-utils-1.1.31/plugins/pre-transaction-actions/sample.action	2017-10-27 17:30:16.579550073 +0200

@@ -0,0 +1,21 @@

+#action_key:transaction_state:command

+# action_key can be: pkgglob, /path/to/file (wildcards allowed)

+# transaction_state can be: install,update,remove,any

+# command can be: any shell command

+#  the following variables are allowed to be passed to any command:

+#   $name - package name

+#   $arch - package arch

+#   $ver - package version

+#   $rel - package release

+#   $epoch - package epoch

+#   $repoid - package repository id

+#   $state - text string of state of the package in the transaction set

+#

+# file matches cannot be used with removes b/c we don't have the info available

+

+*:install:touch /tmp/$name-installed

+zsh:remove:touch /tmp/zsh-removed

+zsh:install:touch /tmp/zsh-installed-also

+/bin/z*h:install:touch /tmp/bin-zsh-installed

+z*h:any:touch /tmp/bin-zsh-any

+