Fix sudo run as another user

EasyOS does not have 'sudo', instead has a light-weight replacement named 'sudo-sh':

https://bkhome.org/news/202510/sudo-sh-reverted-to-simpler-design.html

There is a script /usr/bin/sudo, that is a wrapper for sudo-sh. It is far from implementing everything that sudo is capable of. The guys found when install Zoneminder, that it tries to use sudo to launch an app as user 'www-data':

https://forum.puppylinux.com/viewtopic.php?p=173863#p173863

I have modified 'sudo' script:

#!/bin/ash
C=''
while [ -n "$1" ];do
 case "$1" in
  -*)
   case "$1" in
    --user=*)
     #ref: https://forum.puppylinux.com/viewtopic.php?p=173863#p173863
     USERx="${1/*=/}"
     shift
     exec /usr/sbin/run-as-user ${USERx} ${@}
    ;;
    -u)
     shift
     exec /usr/sbin/run-as-user ${@}
    ;;
    -g|-p|-U|-C|-r|-t)
     shift
    ;;
   esac
  ;;
  *)
   C="$@"
   break
  ;;
 esac
 shift
done

if [ -n "$C" ];then
 #exec sudo-sh ${PPID} ${0} ${C}
 exec sudo-sh ${PPID} ${C}
fi
###end###

The 'run-as-user' script was introduced here:

https://bkhome.org/news/202602/enhanced-script-to-run-app-as-any-user.html

If you try and run it, like this for example: run-as-user www-data myapp

It will fail, as folder "/home/www-data" does not exist. I have modified the 'run-as-user' script to call /usr/local/clients/create-client-environment if www-data not in /etc/passwd, or if it is, to not require existence of /home/www-data.  

Tags: easy