From 82fd33f85381ed6c74528e4110d97a39da41327e Mon Sep 17 00:00:00 2001
From: "B. Stack" <bgstack15@gmail.com>
Date: Fri, 11 Jun 2021 16:58:25 -0400
Subject: initial commit

---
 systemctl | 528 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 528 insertions(+)
 create mode 100755 systemctl

(limited to 'systemctl')

diff --git a/systemctl b/systemctl
new file mode 100755
index 0000000..a4d8d54
--- /dev/null
+++ b/systemctl
@@ -0,0 +1,528 @@
+#!/bin/sh
+# Filename: systemctl
+# Location: /usr/sbin/systemctl
+#    /usr/bin/hostnamectl
+#    /usr/bin/systemd-detect-virt
+# Author: bgstack15@gmail.com
+# Startdate: 2020-01-10 13:02:14
+# SPDX-License-Identifier: CC-BY-SA-4.0
+# Title: 
+# Purpose: 
+# Package: systemctl-service-shim
+# History: 
+#    2020-05-14 place framework.sh contents inline so as not to depend on it.
+#    2021-01-10 adapted for inclusion in devuan-sanity
+# Usage: 
+#    Should be mostly like systemctl from systemd.
+# Reference: ftemplate.sh 2019-05-02a ; framework.sh 2018-05-02a
+#    man 1 systemctl
+# Improve:
+#    add preset command
+#    Return 1 if status output is failed
+# Dependencies:
+#    req-devuan: moreutils
+# Documentation:
+#    Be aware that real systemd systemctl is file /bin/systemctl but
+#    this systemdtl is file /usr/sbin/systemctl to prevent a recursive loop
+#    in some service scripts that look for /bin/systemctl
+# vim: set sw=3 sts=3 ts=3 et:
+fiversion="2019-05-02a"
+systemctlversion="2021-06-11a"
+
+usage() {
+   ${PAGER:-/usr/bin/less -F} >&2 <<ENDUSAGE
+usage: systemctl [-duV] [-c conffile]
+Provides a systemctl-like interface to sysvinit. Simulates various
+actions on services: start, stop, restart, enable, disable, status,
+mask, unmask, is-enabled, is-active, condrestart.
+version ${systemctlversion}
+ -d debug   Show debugging info, including parsed variables.
+ -u usage   Show this usage block.
+ -V version Show script version number.
+ -c conf    Read in this config file.
+Return values:
+ 0 Normal
+ 1 Queried service is disabled/inactive
+ 2 Count or type of flaglessvals is incorrect
+ 3 Incorrect OS type
+ 4 Unable to find dependency
+ 5 Not run as root or sudo
+ENDUSAGE
+}
+
+# DEFINE FUNCTIONS
+log_to_file() {
+   flecho "${@}" >> "${logfile}"
+}
+
+parseFlag() {
+   flag="$1"
+   hasval=0
+   case ${flag} in
+      # INSERT FLAGS HERE
+      "d" | "debug" | "DEBUG" | "dd" ) setdebug ; ferror "debug level ${debug}" ; __debug_set_by_param=1 ;;
+      "u" | "usage" | "help" | "h" ) usage ; exit 0 ;;
+      "V" | "fcheck" | "version" ) ferror "${scriptfile} version ${systemctlversion}" ; exit 0 ;;
+      "c" | "conf" | "conffile" | "config" ) getval ; conffile="${tempval}" ;;
+      "now" ) export SYSTEMCTL_NOW=1 ;;
+      "full") export SYSTEMCTL_FULL=1 ;;
+      "system") export SYSTEMCTL_SYSTEM=1 ;;
+   esac
+
+   debuglev 10 && { test ${hasval} -eq 1 && ferror "flag: ${flag} = ${tempval}" || ferror "flag: ${flag}" ; }
+}
+
+# INITIALIZE VARIABLES
+# variables set in framework:
+# server scriptdir scriptfile scripttrim
+
+### BEGIN IMPORT OF FRAMEWORK.SH
+fversion="2020-04-24x"
+
+# DEFINE FUNCTIONS
+
+isflag() {
+   # input: $1=word to parse
+   case "$1" in
+      --*) retval=2 ;;
+      -*) retval=1 ;;
+      *) retval=0 ;;
+   esac
+   echo $retval
+}
+
+parseParam() {
+   # determines if --longname or -shortflagS that need individual parsing
+   trimParam=$( printf '%s' "${param}" | sed -n 's/--//p' )
+   _rest=
+   if test -n "$trimParam" ;
+   then
+      parseFlag $trimParam
+   else
+      #splitShortStrings
+      _i=2
+      while test ${_i} -le ${#param} ;
+      do
+         _j=$( expr ${_i} + 1)
+         #_char=$(expr substr "$param" $_i 1)
+         #_rest=$(expr substr "$param" $_j 255)
+         _char=$( printf '%s' "${param}" | cut -c ${_i})
+         _rest=$( printf '%s' "${param}" | cut -c ${_j}-255)
+         parseFlag $_char
+         _i=$( expr ${_i} + 1)
+      done
+   fi
+}
+
+getval() {
+   tempval=
+   if test -n "${_rest}" ;
+   then
+      tempval="${_rest}"
+      hasval=1
+      _i=255   # skip rest of splitShortStrings because found the value!
+   elif test -n "$nextparam" && test $(isflag "$nextparam") -eq 0 ;
+   then
+      tempval="$nextparam"
+      hasval=1 #DNE ; is affected by ftemplate!
+      paramnum=$nextparamnum
+   fi
+}
+
+debuglev() {
+   # call: debuglev 5 && ferror "debug level is at least a five!"
+   # added 2015-11-17
+   localdebug=0 ; localcheck=0 ;
+   fisnum ${debug} && localdebug=${debug}
+   fisnum ${1} && localcheck=${1}
+   test $localdebug -ge $localcheck && return 0 || return 1
+}
+
+debuglevoutput() {
+   # call: commandthatgeneratesstdout | debuglevoutput 8
+   # output: output to standard error prepended with "debug8: " the contents of the pipe
+   ___dlo_threshold="${1}"
+   ___dlo_silent="${2}"
+   if debuglev "${___dlo_threshold}" ;
+   then
+      if test -n "${___dlo_silent}" ;
+      then
+         cat 1>&2
+      else
+         sed -r -e "s/^/debug${___dlo_threshold}: /;" 1>&2
+      fi
+   else
+      cat 1>/dev/null 2>&1
+   fi
+}
+
+fisnum() {
+   # call: fisnum $1 && debug=$1 || debug=10
+   fisnum= ;
+   case $1 in
+      ''|*[!0-9]*) fisnum=1 ;; # invalid
+      *) fisnum=0 ;; # valid number
+   esac
+   return ${fisnum}
+}
+
+fistruthy() {
+   # call: if fistruthy "$val" ; then
+   local _return=
+   case "$( echo "${1}" | tr '[:upper:]' '[:lower:]' )" in
+      yes|1|y|true|always) _return=true ;;
+   esac
+   test -n "${_return}" ; return $?
+}
+
+setval() {
+   # call: setval 0 value1 value2 value3 ... <<EOFOPTIONS
+   # /bin/foo1 --optforfoo1
+   # /usr/bin/foo2 --optforfoo2
+   # EOFOPTIONS
+   #              ^ 0 = soft fail, 1 = critical-fail
+   quitonfail="${1}" ; shift
+   _vars="${@}"
+   #echo "_vars=${_vars}"
+   _varcount=0
+   for _word in ${_vars} ; do _varcount=$( expr $_varcount + 1 ) ; eval "_var${_varcount}=${_word}" ; done
+   _usethis=0
+   while read line ;
+   do
+      _varcount=0
+      if test ! "${_usethis}x" = "0x" ; then break ; fi
+      #echo "line=${line}" ;
+      for _word in ${line} ;
+      do
+         _varcount=$( expr $_varcount + 1 )
+         #echo "word ${_varcount}=${_word}" ;
+         case "${_varcount}" in
+            1)
+               #echo "Testing for existence of file ${_word}"
+               if test -f "${_word}" ;
+               then
+                  _usethis=1
+                  #echo "${_var1}=${_word}"
+                  eval "${_var1}=${_word}"
+               fi
+               ;;
+            *)
+               #echo "just an option: ${_word}"
+               if test "${_usethis}x" = "1x" ;
+               then
+                  #eval echo "\${_var${_varcount}}=${_word}"
+                  eval eval "\${_var${_varcount}}=${_word}"
+               fi
+               ;;
+         esac
+      done
+   done
+   #eval echo "testfile=\$${_var1}"
+   eval _testfile=\$${_var1}
+   if test ! -f "${_testfile}" ;
+   then
+      case "${quitonfail}" in 1) _failval="critical-fail" ;; *) _failval="fail" ;; esac
+      eval "${_var1}=${_failval}"
+      setvalout=${_failval}
+   else
+      eval setvalout="valid-${_var1}"
+   fi
+}
+
+flecho() {
+   # requires moreutils
+   if echo "${@}" | grep -qiE '.' ;
+   then
+      printf "%s\n" "${@}" | TZ=UTC ts "[%FT%TZ]${USER}@${server}:"
+   else
+      printf '' | TZ=UTC ts "[%FT%TZ]${USER}@${server}"
+   fi
+}
+
+ferror() {
+   # call: ferror "$scriptfile: 2. Something bad happened-- error message 2."
+   echo "$@" 1>&2
+}
+
+setdebug() {
+   # call: setdebug
+   debug=10
+   getval
+   if test $hasval -eq 1 ;
+   then
+      if fisnum ${tempval} ;
+      then
+         debug=${tempval}
+      else
+         #test paramnum -le paramcount && paramnum=$( expr ${paramnum} - 1 )
+         hasval=0
+      fi
+   elif fisnum ${_rest} ;
+   then
+      debug=${_rest}
+      _i=255
+   else
+      test $paramnum -le $paramcount && test -z ${nextparam} && paramnum=$( expr ${paramnum} - 1 )
+   fi
+}
+
+define_if_new() {
+   # call: define_if_new IFW_IN_LOG_FILE "/var/log/messages"
+   eval thisval="\${${1}}"
+   test -z "${thisval}" && eval "$1"=\"$2\"
+}
+
+# INITIALIZE VARIABLES
+server=$( hostname -s )
+thisos="$( uname -s )"
+# get thisflavor and thisflavorversion. Examples: centos, ubuntu, redhat
+if test -f /etc/os-release ;
+then
+   eval thisflavor=$( grep -iE "^\s*ID=" /etc/os-release 2>/dev/null | sed 's/^.*=//;' | tr 'A-Z' 'a-z' )
+   eval thisflavorversion=$( grep -iE "^\s*PRETTY_NAME=" /etc/os-release 2>/dev/null | sed -e 's/^.*=//;' | tr -dc '0-9.' )
+elif test -f /etc/system-release && test $( wc -l < /etc/system-release 2>/dev/null ) -eq 1 ;
+then
+   eval thisflavor=$( awk '{print $1}' < /etc/system-release 2>/dev/null | tr 'A-Z' 'a-z' )
+   eval thisflavorversion=$( </etc/system-release sed -e 's/^.*=//;' 2>/dev/null | tr -dc '0-9.' )
+else
+   if test "${thisos}" = "FreeBSD" ; then
+      thisflavor="$( uname -i )" ; thisflavorversion="$( uname -r )" ;
+   else
+      thisflavor="other"
+      thisflavorversion="unknown"
+   fi
+fi
+case "${thisos}" in FreeBSD) sed=gsed ;; *) sed=sed ;; esac
+
+# if framework is dot sourced then $0 will be "-bash" and screw things up
+case ${0} in
+   "-bash")
+      scriptdir="$( pwd )"
+      scriptfile="dot-sourced" ;;
+   *)
+      scriptdir="$( cd $( dirname ${0} ) ; pwd )"
+      scriptfile="$( basename ${0} | sed 's!/./!/!g;s!\./!!g' )"
+      scripttrim="${scriptfile%%.sh}"
+      ;;
+esac
+
+# SPECIAL RUNTIME-RELATED VARIABLES
+{ test "$USER" = "root" || test "$( stat -c '%u' /proc/$$/exe 2>/dev/null )" = 0 ; } && is_root=1
+test -n "$SUDO_USER" && is_root="sudo"
+
+nullflagcount=0
+validateparams() {
+   # VALIDATE PARAMETERS
+   # scroll through all parameters and check for isflag.
+   # if isflag, get all flags listed. Also grab param#.
+   paramcount=$#
+   thiscount=0 ;thisopt=0 ;freeopt=0 ;
+   varsyet=0
+   paramnum=0
+   debug=0
+   fallopts=
+   while test $paramnum -lt $paramcount ;
+   do
+      paramnum=$( expr ${paramnum} + 1 )
+      eval param=\${$paramnum}
+      nextparamnum=$( expr ${paramnum} + 1 )
+      eval nextparam=\${$nextparamnum}
+      case $param in
+         "-")
+            if test "$varsyet" = "0" ;
+            then
+               # first instance marks beginning of flags and parameters.
+               #Until then it was the names of variables to fill.
+               varsyet=1
+            else
+               nullflagcount=$( expr ${nullflagcount} + 1 ) #useful for separating flags from something else?
+               debuglev 10 && ferror "null flag!" # second instance is null flag.
+            fi
+            ;;
+      esac
+      if test -n "$param" ;
+      then
+         # parameter $param exists.
+         if test $(isflag $param) -gt 0 ;
+         then
+            # IS FLAG
+            parseParam
+         else
+            # IS VALUE
+            if test "$varsyet" = "0" ;
+            then
+               thisopt=$( expr ${thisopt} + 1 )
+               test "${param}" = "DEBUG" && debug=10 && thisopt=$( expr ${thisopt} - 1 ) || \
+                  eval "varname${thisopt}=${param}"
+                  #varname[${thisopt}]="${param}"
+               debuglev 10 && ferror "var \"${param}\" named"
+            else
+               thiscount=$( expr ${thiscount} + 1 )
+               test $thiscount -gt $thisopt && freeopt=$( expr ${freeopt} + 1 )
+               #eval ${varname[${thiscount}]:-opt${freeopt}}="\"${param}\""
+               eval "thisvarname=\${varname${thiscount}}"
+                  test -z "${thisvarname}" && eval "thisvarname=opt${freeopt}"
+               eval "${thisvarname}=\"${param}\""
+               eval fallopts=\"${fallopts} ${param}\"
+               debuglev 10 && ferror "${thisvarname} value: ${param}"
+            fi
+         fi
+      fi
+   done
+   fallopts="${fallopts# }"
+   if debuglev 10 ;
+   then
+      ferror "thiscount=$thiscount"
+      ferror "fallopts=$fallopts"
+      ferror "Framework $fversion"
+      ferror "Finput $fiversion"
+   fi
+}
+### END IMPORT OF FRAMEWORK.SH
+
+define_if_new logfile "/var/log/systemctl.log"
+
+# VALIDATE PARAMETERS
+# objects before the dash are options, which get filled with the optvals
+# to debug flags, use option DEBUG. Variables set in framework: fallopts
+validateparams action - "$@"
+
+# LEARN EX_DEBUG
+test -z "${__debug_set_by_param}" && fisnum "${SYSTEMCTL_DEBUG}" && debug="${SYSTEMCTL_DEBUG}"
+debug=10
+
+# CONFIGURE VARIABLES AFTER PARAMETERS
+
+_trimmed="$( echo "${@}" | tr -d '\r\n' )"
+log_to_file "${0} ${_trimmed}"
+case "${0}" in
+   *hostnamectl|*systemd-detect-virt) exit 0 ;; # always just short-circuit
+esac
+
+# MAIN LOOP
+
+# actions
+actionlist=""
+case "${action}" in
+
+   restart|start|stop|status|reload|condrestart|try-restart|reload-or-try-restart)
+      # re-map a few actions
+      case "${action}" in
+         "reload-or-try-restart") action=restart ;;
+      esac
+      x=1
+      while test ${x:-${thiscount}} -le $(( thiscount - 1 )) && test ${thiscount} -gt 1 ;
+      do
+         eval thisopt="\${opt${x}}"
+         thisopt="$( echo "${thisopt}" | sed -r -e 's/\.service$//;' )"
+         actionstatement="$( printf "%s" "service ${thisopt} ${action};" )"
+         actionlist="${actionlist:+${actionlist} }${actionstatement}"
+         x=$(( x + 1 ))
+      done
+      ;;
+
+   enable|disable|mask|unmask)
+      case "${action}" in
+         mask) action=disable ;;
+         unmask) action=enable ;;
+      esac
+      x=1
+      while test ${x:-${thiscount}} -le $(( thiscount - 1 )) && test ${thiscount} -gt 1 ;
+      do
+         eval thisopt="\${opt${x}}"
+         thisopt="$( echo "${thisopt}" | sed -r -e 's/\.service$//;' )"
+         actionstatement="$( printf "%s" "update-rc.d ${thisopt} ${action};" )"
+         actionlist="${actionlist:+${actionlist} }${actionstatement}"
+         test "${SYSTEMCTL_NOW}" = "1" && {
+            case "${action}" in
+               enable)
+                  nowaction=start
+                  ;;
+               disable)
+                  nowaction=stop
+                  ;;
+            esac
+            actionstatement="$( printf "%s" "service ${thisopt} ${nowaction:-stop};" )"
+            actionlist="${actionlist:+${actionlist} }${actionstatement}"
+         }
+         x=$(( x + 1 ))
+      done
+      ;;
+
+   daemon-reload)
+      debuglev 1 && echo "${action} is a NOP."
+      ;;
+
+   list-unit-files)
+      # Future improvement: can consume --full, but I do not care enough to deal with it now.
+      ls -Al /etc/init.d
+      ;;
+
+   is-enabled)
+      currentrunlevel="$( who -r | grep -oE 'run-level\s+[[:digit:]]+' | awk '{print $NF}' )"
+      responsenumber=1
+
+      # loop through each service on the command line
+      x=1
+      while test ${x:-${thiscount}} -le $(( thiscount - 1 )) && test ${thiscount} -gt 1 ;
+      do
+         eval thisopt="\${opt${x}}"
+         thisopt="$( echo "${thisopt}" | sed -r -e 's/\.service$//;' )"
+         #actionstatement="$( printf "%s" "service ${thisopt} ${action};" )"
+         scriptfile="$( find "/etc/rc${currentrunlevel}.d" -mindepth 1 -maxdepth 1 -name "S??${thisopt}" 2>/dev/null )"
+         responsetext="disabled"
+         # if file exists, let us return 0.
+         if test -n "${scriptfile}" ;
+         then
+            debuglev 2 && echo "${scriptfile}"
+            responsenumber=0 # any "enabled" response makes systemctl return 0
+            responsetext="enabled"
+         fi
+         echo "${responsetext:-UNKNOWN}"
+         x=$(( x + 1 ))
+      done
+      exit "${responsenumber}"
+      ;;
+
+   is-active)
+      responsenumber=3
+      x=1
+      while test ${x:-${thiscount}} -le $(( thiscount - 1 )) && test ${thiscount} -gt 1 ;
+      do
+         eval thisopt="\${opt${x}}"
+         thisopt="$( echo "${thisopt}" | sed -r -e 's/\.service$//;' )"
+         #actionstatement="$( printf "%s" "service ${thisopt} ${action};" )"
+         servicestatus="$( service "${thisopt}" status 1>/dev/null 2>&1 ; echo "${?}" )"
+         responsetext="stopped"
+         # if file exists, let us return 0.
+         if test ${servicestatus:-1} -eq 0 ;
+         then
+            responsenumber=0
+            responsetext="active"
+         fi
+         echo "${responsetext:-unknown}"
+         x=$(( x + 1 ))
+      done
+      exit "${responsenumber}"
+      ;;
+
+   *)
+      ferror "Fatal! 2. Unable to understand action ${action}. Aborted."
+      exit 2
+      ;;
+esac
+
+# list of actions
+if test -n "${actionlist}" ;
+then
+   #debuglev 1 && ferror "Full list: ${actionlist}"
+   printf "%s" "${actionlist}" | tr ';' '\n' | while read thisaction ;
+   do
+      log_to_file "ACTION: ${thisaction}"
+      debuglev 5 && ferror "${thisaction}"
+      eval "${thisaction}"
+   done
+fi
+
+# exit cleanly
+:
-- 
cgit