#  Copyright (C) Cfengine AS

#  This file is part of Cfengine 3 - written and maintained by Cfengine AS.

#  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; version 3.

#  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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA

# To the extent this program is licensed as part of the Enterprise
# versions of Cfengine, the applicable Commerical Open Source License
# (COSL) may apply to this file if you as a licensee so wish it. See
# included file COSL.txt.

#######################################################
#
# Site specific promises
#
#######################################################

bundle common g
{
vars:

  SuSE::

   "crontab" string => "/var/spool/cron/tabs/root";

 !SuSE::

   "crontab" string => "/var/spool/cron/crontabs/root";
}

#######################################################
# Start with cfengine itself
#######################################################

bundle agent cfengine

{
classes:

  "integrate_cfengine2" 

      and => { 
             fileexists("$(sys.workdir)/inputs/cfagent.conf"), 
             fileexists("$(sys.workdir)/bin/cfagent")
             };

vars:

   "cf2bits" slist => { "cfenvd", "cfservd", "cfexecd" };

commands:

 integrate_cfengine2:: 

   "$(sys.workdir)/bin/cfagent"

        action => longjob;

files:

  # Warn about rules relating to cfengine 2 in inputs - could conflict

  "$(sys.workdir)/inputs/.*"

       comment     => "Check if there are still promises about cfengine 2 that need removing",
       edit_line   => DeleteLinesMatching(".*$(cf2bits).*"),
       file_select => OldCf2Files,
       action      => WarnOnly;

  # Check cf-execd and schedule is in crontab

  "$(g.crontab)"
       comment => "Add cfengine as a cron job, or check for cfengine 2 jobs to replace",
       edit_line => upgrade_cfexecd;

processes:

  exec_fix::

    "cron" signals => { "hup" };


}

#######################################################
# General site issues can be in bundles like this one
#######################################################

bundle agent main

{
vars:

  "component" slist => { "cf-monitord", "cf-serverd" };

 # - - - - - - - - - - - - - - - - - - - - - - - -

files:

  "$(sys.resolv)"  # test on "/tmp/resolv.conf" #

     comment       => "Edit the resolver file",
     create        => "true",
     edit_line     => resolver,
     edit_defaults => def;

 # Uncomment this to perform a change-detection scan

 #  "/usr"         
 #     changes      => lay_trip_wire,
 #     depth_search => recurse("inf"),
 #     action       => measure;

processes:

  "cfenvd"             signals => { "term" };

 # Uncomment this if/when you are ready to upgrade a cf2 server
 #
 #  "cfservd"             signals => { "term" };
 #

 # Now make sure the new parts are running, cf-serverd will fail if
 # the old server is still running 

  "$(component)" restart_class => canonify("start_$(component)");

 # - - - - - - - - - - - - - - - - - - - - - - - -

commands:

   "$(sys.workdir)/bin/$(component)"

       ifvarclass => canonify("start_$(component)");

}

#######################################################
# Garbage collection issues
#######################################################

bundle agent garbage_collection
{
files:

  "$(sys.workdir)/outputs" 

    delete => tidy,
    file_select => days_old("3"),
    depth_search => recurse("inf");


}

#######################################################

bundle edit_line resolver

{
vars:

 "search" slist => { "search cfengine.com" };

delete_lines:

  "search.*";

insert_lines:

  "$(search)" location => start;
}

###########################################################

body file_select OldCf2Files
{
leaf_name => { 
             "promises.cf", 
             "site.cf", 
             "library.cf", 
             "failsafe.cf", 
             ".*.txt", 
             ".*.html", 
             ".*~",
             "#.*" 
             };

file_result => "!leaf_name";
}

###########################################################

body action measure
{
measurement_class => "Detect Changes in /usr";
ifelapsed => "240";
expireafter => "240";
}

#######################################################
# Anomaly monitoring
#######################################################

bundle agent anomalies
{
reports:

rootprocs_high_dev2::

   "RootProc anomaly high 2 dev on $(mon.host) at $(mon.env_time) 
    measured value $(mon.value_rootprocs) av $(mon.av_rootprocs) pm $(mon.dev_rootprocs)"

      showstate => { "rootprocs" };

entropy_www_in_high&anomaly_hosts.www_in_high_anomaly::

   "HIGH ENTROPY Incoming www anomaly high anomaly dev!! on $(mon.host) at $(mon.env_time) 
    - measured value $(mon.value_www_in) av $(mon.av_www_in) pm $(mon.dev_www_in)"
   
      showstate => { "incoming.www" };

 entropy_www_in_low.anomaly_hosts.www_in_high_anomaly::

   "LOW ENTROPY Incoming www anomaly high anomaly dev!! on $(mon.host) at $(mon.env_time)
     - measured value $(svalue_www_in) av $(av_www_in) pm $(dev_www_in)"

     showstate => { "incoming.www" };

entropy_tcpsyn_in_low.anomaly_hosts.tcpsyn_in_high_dev2::

   "Anomalous number of new TCP connections on $(mon.host) at $(mon.env_time) 
    - measured value $(mon.value_tcpsyn_in) av $(mon.av_tcpsyn_in) pm $(mon.dev_tcpsyn_in)"

     showstate => { "incoming.tcpsyn" };

 entropy_dns_in_low.anomaly_hosts.dns_in_high_anomaly::

   "Anomalous (3dev) incoming DNS packets on $(mon.host) at $(mon.env_time) 
    - measured value $(mon.value_dns_in) av $(av_dns_in) pm $(mon.dev_dns_in)"
   
     showstate => { "incoming.dns" };

 entropy_dns_in_low.anomaly_hosts.udp_in_high_dev2::

   "Anomalous (2dev) incoming (non-DNS) UDP traffic on $(mon.host) at $(mon.env_time) 
    - measured value $(mon.value_udp_in) av $(mon.av_udp_in) pm $(mon.dev_udp_in)"

     showstate => { "incoming.udp" };

 anomaly_hosts.icmp_in_high_anomaly.!entropy_icmp_in_high::

   "Anomalous low entropy (3dev) incoming ICMP traffic on $(mon.host) at $(mon.env_time) 
    - measured value $(mon.value_icmp_in) av $(mon.av_icmp_in) pm $(mon.dev_icmp_in)"
   
     showstate => { "incoming.icmp" };
}

#######################################################
# Server configuration
#######################################################

bundle server access_rules()
{
access:

  "/home/mark/LapTop"

    admit   => { "127.0.0.1" };

  "/home/mark/.cfagent/bin/cf-agent"

    admit   => { "127.0.0.1" };

roles:

  ".*"  authorize => { "mark" };
}