From b3b9c8adf8307223000986f0ad83452d993708aa Mon Sep 17 00:00:00 2001
From: B Stack <bgstack15@gmail.com>
Date: Sun, 28 May 2017 21:37:53 -0400
Subject: starting to add dhcpd-control

---
 etc/sysconfig/dhcpd-control               |   5 +
 etc/updatezone/dhcpd-control.conf         |   1 +
 usr/share/updatezone/dhcpd-control.sh     | 300 ++++++++++++++++++++++++++++++
 usr/share/updatezone/docs/updatezone.spec |   2 +-
 4 files changed, 307 insertions(+), 1 deletion(-)
 create mode 100644 etc/sysconfig/dhcpd-control
 create mode 100644 etc/updatezone/dhcpd-control.conf
 create mode 100755 usr/share/updatezone/dhcpd-control.sh

diff --git a/etc/sysconfig/dhcpd-control b/etc/sysconfig/dhcpd-control
new file mode 100644
index 0000000..3073169
--- /dev/null
+++ b/etc/sysconfig/dhcpd-control
@@ -0,0 +1,5 @@
+DHCPD_CONTROL_COMBINED_FILE=/etc/dhcp/dhcpd.combined.conf
+DHCPD_CONTROL_DHCPD_FILE=/etc/dhcp/dhcpd.conf
+DHCPD_CONTROL_LEASES_FILE=/var/lib/dhcpd/dhcpd.leases
+DHCPD_CONTROL_LEASES_TEMP_FILE=/var/lib/dhcpd/dhcpd.leases~
+DHCPD_CONTROL_SERVICE=dhcpd
diff --git a/etc/updatezone/dhcpd-control.conf b/etc/updatezone/dhcpd-control.conf
new file mode 100644
index 0000000..ef8bc52
--- /dev/null
+++ b/etc/updatezone/dhcpd-control.conf
@@ -0,0 +1 @@
+[dhcpd-control]
diff --git a/usr/share/updatezone/dhcpd-control.sh b/usr/share/updatezone/dhcpd-control.sh
new file mode 100755
index 0000000..a334a93
--- /dev/null
+++ b/usr/share/updatezone/dhcpd-control.sh
@@ -0,0 +1,300 @@
+#!/bin/sh
+# Filename: dhcpd-control.sh
+# Location: 
+# Author: bgstack15@gmail.com
+# Startdate: 2017-05-28 18:18:46
+# Title: Script that Facilitates the Configuration of DHCPD
+# Purpose: 
+# Package: 
+# History: 
+# Usage: 
+# Reference: ftemplate.sh 2017-05-24a; framework.sh 2017-05-24a
+# Improve:
+fiversion="2017-05-24a"
+dhcpdcontrolversion="2017-05-28a"
+
+usage() {
+   less -F >&2 <<ENDUSAGE
+usage: dhcpd-control.sh [-duV] [ --flush | --edit | --edit-local | --remove-mac <mac> ] [ --force ]
+version ${dhcpdcontrolversion}
+ -d debug   Show debugging info, including parsed variables.
+ -u usage   Show this usage block.
+ -V version Show script version number.
+ --flush    Clears all current leases
+ --edit     Edit the combined file-- the one shared by both servers.
+ --edit-local Edit the local file.
+ --remove-mac <MAC> Clears the leases for this MAC address.
+Return values:
+0 Normal
+1 Help or version info displayed
+2 Count or type of flaglessvals is incorrect
+3 Incorrect OS type
+4 Unable to find dependency
+5 Not run as root or sudo
+ENDUSAGE
+}
+
+# DEFINE FUNCTIONS
+
+# DEFINE TRAPS
+
+clean_dhcpdcontrol() {
+   #rm -f ${logfile} > /dev/null 2>&1
+   [ ] #use at end of entire script if you need to clean up tmpfiles
+}
+
+CTRLC() {
+   #trap "CTRLC" 2
+   [ ] #useful for controlling the ctrl+c keystroke
+}
+
+CTRLZ() {
+   #trap "CTRLZ" 18
+   [ ] #useful for controlling the ctrl+z keystroke
+}
+
+parseFlag() {
+   flag="$1"
+   hasval=0
+   case ${flag} in
+      # INSERT FLAGS HERE
+      "d" | "debug" | "DEBUG" | "dd" ) setdebug; ferror "debug level ${debug}";;
+      "u" | "usage" | "help" | "h" ) usage; exit 1;;
+      "V" | "fcheck" | "version" ) ferror "${scriptfile} version ${dhcpdcontrolversion}"; exit 1;;
+      #"i" | "infile" | "inputfile" ) getval;infile1=${tempval};;
+      "f" | "force" ) DHCPD_CONTROL_FORCE=1;;
+      "flush" ) action="flush";;
+      "edit-local" ) action="edit-local";;
+      "edit" ) action="edit";;
+      "remove-mac" ) getval; DHCPD_CONTROL_MAC_TO_REMOVE="${tempval}";;
+   esac
+   
+   debuglev 10 && { test ${hasval} -eq 1 && ferror "flag: ${flag} = ${tempval}" || ferror "flag: ${flag}"; }
+}
+
+# DETERMINE LOCATION OF FRAMEWORK
+while read flocation; do if test -x ${flocation} && test "$( ${flocation} --fcheck )" -ge 20170524; then frameworkscript="${flocation}"; break; fi; done <<EOFLOCATIONS
+./framework.sh
+${scriptdir}/framework.sh
+~/bin/bgscripts/framework.sh
+~/bin/framework.sh
+~/bgscripts/framework.sh
+~/framework.sh
+/usr/local/bin/bgscripts/framework.sh
+/usr/local/bin/framework.sh
+/usr/bin/bgscripts/framework.sh
+/usr/bin/framework.sh
+/bin/bgscripts/framework.sh
+/usr/share/bgscripts/framework.sh
+EOFLOCATIONS
+test -z "${frameworkscript}" && echo "$0: framework not found. Aborted." 1>&2 && exit 4
+
+# INITIALIZE VARIABLES
+# variables set in framework:
+# today server thistty scriptdir scriptfile scripttrim
+# is_cronjob stdin_piped stdout_piped stderr_piped sendsh sendopts
+. ${frameworkscript} || echo "$0: framework did not run properly. Continuing..." 1>&2
+infile1=
+outfile1=
+logfile=${scriptdir}/${scripttrim}.${today}.out
+action=""
+define_if_new interestedparties "bgstack15@gmail.com"
+# SIMPLECONF
+#define_if_new default_conffile "/etc/sysconfig/dhcpd-control"
+define_if_new default_conffile "/home/bgirton/rpmbuild/SOURCES/updatezone-0.0-2/etc/sysconfig/dhcpd-control"
+#define_if_new defuser_conffile ~/.config/dhcpdcontrol/dhcpdcontrol.conf
+define_if_new EDITOR vi
+
+# REACT TO OPERATING SYSTEM TYPE
+case $( uname -s ) in
+   Linux) [ ];;
+   FreeBSD) [ ];;
+   *) echo "${scriptfile}: 3. Indeterminate OS: $( uname -s )" 1>&2 && exit 3;;
+esac
+
+## REACT TO ROOT STATUS
+#case ${is_root} in
+#   1) # proper root
+#      [ ] ;;
+#   sudo) # sudo to root
+#      [ ] ;;
+#   "") # not root at all
+#      #ferror "${scriptfile}: 5. Please run as root or sudo. Aborted."
+#      #exit 5
+#      [ ]
+#      ;;
+#esac
+
+# SET CUSTOM SCRIPT AND VALUES
+#setval 1 sendsh sendopts<<EOFSENDSH      # if $1="1" then setvalout="critical-fail" on failure
+#/usr/share/bgscripts/send.sh -hs     #                setvalout maybe be "fail" otherwise
+#/usr/local/bin/send.sh -hs               # on success, setvalout="valid-sendsh"
+#/usr/bin/mail -s
+#EOFSENDSH
+#test "${setvalout}" = "critical-fail" && ferror "${scriptfile}: 4. mailer not found. Aborted." && exit 4
+
+# VALIDATE PARAMETERS
+# objects before the dash are options, which get filled with the optvals
+# to debug flags, use option DEBUG. Variables set in framework: fallopts
+validateparams - "$@"
+
+# CONFIRM TOTAL NUMBER OF FLAGLESSVALS IS CORRECT
+#if test ${thiscount} -lt 2;
+#then
+#   ferror "${scriptfile}: 2. Fewer than 2 flaglessvals. Aborted."
+#   exit 2
+#fi
+
+# CONFIGURE VARIABLES AFTER PARAMETERS
+
+## LOAD CONFIG FROM SIMPLECONF
+## This section follows a simple hierarchy of precedence, with first being used:
+##    1. parameters and flags
+##    2. environment
+##    3. config file
+##    4. default user config: ~/.config/script/script.conf
+##    5. default config: /etc/script/script.conf
+#if test -f "${conffile}";
+#then
+#   get_conf "${conffile}"
+#else
+#   if test "${conffile}" = "${default_conffile}" || test "${conffile}" = "${defuser_conffile}"; then :; else ferror "${scriptfile}: Ignoring conf file which is not found: ${conffile}."; fi
+#fi
+#test -f "${defuser_conffile}" && get_conf "${defuser_conffile}"
+test -f "${default_conffile}" && get_conf "${default_conffile}"
+
+## START READ CONFIG FILE TEMPLATE
+#oIFS="${IFS}"; IFS="$( printf '\n' )"
+#infiledata=$( ${sed} ':loop;/^\/\*/{s/.//;:ccom;s,^.[^*]*,,;/^$/n;/^\*\//{s/..//;bloop;};bccom;}' "${infile1}") #the crazy sed removes c style multiline comments
+#IFS="${oIFS}"; infilelines=$( echo "${infiledata}" | wc -l )
+#{ echo "${infiledata}"; echo "ENDOFFILE"; } | {
+#   while read line; do
+#   # the crazy sed removes leading and trailing whitespace, blank lines, and comments
+#   if test ! "${line}" = "ENDOFFILE";
+#   then
+#      line=$( echo "${line}" | sed -e 's/^\s*//;s/\s*$//;/^[#$]/d;s/\s*[^\]#.*$//;' )
+#      if test -n "${line}";
+#      then
+#         debuglev 8 && ferror "line=\"${line}\""
+#         if echo "${line}" | grep -qiE "\[.*\]";
+#         then
+#            # new zone
+#            zone=$( echo "${line}" | tr -d '[]' )
+#            debuglev 7 && ferror "zone=${zone}"
+#         else
+#            # directive
+#            varname=$( echo "${line}" | awk -F= '{print $1}' )
+#            varval=$( echo "${line}" | awk -F= '{$1=""; printf "%s", $0}' | sed 's/^ //;' )
+#            debuglev 7 && ferror "${zone}${varname}=\"${varval}\""
+#            # simple define variable
+#            eval "${zone}${varname}=\${varval}"
+#         fi
+#         ## this part is untested
+#         #read -p "Please type something here:" response < ${thistty}
+#         #echo "${response}"
+#      fi
+#   else
+
+## REACT TO BEING A CRONJOB
+#if test ${is_cronjob} -eq 1;
+#then
+#   [ ]
+#else
+#   [ ]
+#fi
+
+# SET TRAPS
+#trap "CTRLC" 2
+#trap "CTRLZ" 18
+#trap "clean_dhcpdcontrol" 0
+
+# MAIN LOOP
+#{
+
+   # use DHCPD_CONTROL_COMBINED_FILE and DHCPD_CONTROL_DHCPD_FILE
+
+   # derive if primary or secondary server
+   is_primary="$( sed -n -r -e '/failover.*\{/,/\}/p' ${DHCPD_CONTROL_DHCPD_FILE} | grep -iE "^\s*primary" )"
+   if ! test -n "${is_primary}";
+   then
+      if ! fistruthy "${DHCPD_CONTROL_FORCE}";
+      then
+         ferror "${scriptfile}: 4. Canot determine that this is the primary server. Try --force option. Aborted."
+         exit 4
+      fi
+   fi
+
+   # Derive secondary server for later actions
+   define_if_new DHCPD_CONTROL_OTHER_SERVER "$( grep -oiE "peer address [0-9.]{7,15}\s*;" "${DHCPD_CONTROL_DHCPD_FILE}" | tr -dc '[0-9.]' )"
+   
+   # DEBUG SIMPLECONF
+   debuglev 5 && {
+      ferror "Using values"
+      # used values: EX_(OPT1|OPT2|VERBOSE)
+      set | grep -iE "^DHCPD_CONTROL_" 1>&2
+   }
+
+   please_update_other_server_conf=0
+   please_update_other_server_leases=0
+   please_update_other_server_service=0
+   # WORKHERE: add local service, other_server_service
+   case "${action}" in
+
+      "flush")
+         # Clear temorary leases file
+         debuglev 4 && ferror "Flushing all leases"
+         if test -z "${DHCPD_CONTROL_LEASES_TEMP_FILE}";
+         then
+            ferror "Skipping leases temp file. Variable not defined: DHCPD_CONTROL_LEASES_TEMP_FILE."
+         else
+            if test -f "${DHCPD_CONTROL_LEASES_TEMP_FILE}";
+            then
+               case "${DHCPD_CONTROL_LEASES_TEMP_FILE}" in
+                  /var/lib/dhcp*)
+                     rm -f "${DHCPD_CONTROL_LEASES_TEMP_FILE}"
+                     please_update_other_server_conf=1
+                     ;;
+                  *)
+                     ferror "Will not delete unsafe leases temp file ${DHCPD_CONTROL_LEASES_TEMP_FILE}."
+                     ;;
+               esac
+            fi
+         fi
+         # Clear leases file
+         if test -z "${DHCPD_CONTROL_LEASES_FILE}";
+         then
+            ferror "Skipping leases file. Variable not defined: DHCPD_CONTROL_LEASES_FILE."
+         else
+            if test -f "${DHCPD_CONTROL_LEASES_FILE}";
+            then
+               case "${DHCPD_CONTROL_LEASES_FILE}" in
+                  /var/lib/dhcp*)
+                     printf "" > "${DHCPD_CONTROL_LEASES_FILE}"
+                     please_update_other_server_conf=1
+                     ;;
+                  *)
+                     ferror "Will not clear unsafe leases file ${DHCPD_CONTROL_LEASES_FILE}."
+                     ;;
+               esac
+            fi
+         fi
+         ;;
+   esac
+
+   # Update other server if necessary
+   if fistruthy "${please_update_other_server}";
+   then
+      if test -n "${DHCPD_CONTROL_OTHER_SERVER}";
+      then
+         echo "please notify other server ${DHCPD_CONTROL_OTHER_SERVER}"
+      fi
+   fi
+
+#} | tee -a ${logfile}
+
+# EMAIL LOGFILE
+#${sendsh} ${sendopts} "${server} ${scriptfile} out" ${logfile} ${interestedparties}
+
+## STOP THE READ CONFIG FILE
+#exit 0
+#fi; done; }
diff --git a/usr/share/updatezone/docs/updatezone.spec b/usr/share/updatezone/docs/updatezone.spec
index bbab362..d08942e 100644
--- a/usr/share/updatezone/docs/updatezone.spec
+++ b/usr/share/updatezone/docs/updatezone.spec
@@ -2,7 +2,7 @@
 Summary:	update dns zone files easily
 Name:		updatezone
 Version:	0.0
-Release:	1
+Release:	2
 License:	CC BY-SA 4.0
 Group:		Applications/System
 Source:		updatezone.tgz
-- 
cgit