101 lines
3.2 KiB
Bash
Executable File
101 lines
3.2 KiB
Bash
Executable File
#!/bin/sh
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# Step 1, decide if we should use systemd or init/upstart
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use_systemctl="True"
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systemd_version=0
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if ! command -V systemctl >/dev/null 2>&1; then
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use_systemctl="False"
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else
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systemd_version=$(systemctl --version | head -1 | sed 's/systemd //g' | sed 's/ .*//')
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fi
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cleanup() {
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# This is where you remove files that were not needed on this platform / system
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if [ "${use_systemctl}" = "False" ]; then
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rm -f /etc/systemd/system/unpoller.service
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else
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rm -f /etc/chkconfig/unpoller
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rm -f /etc/init.d/unpoller
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fi
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}
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OS="$(uname -s)"
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cleanInstall() {
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printf "\033[32m Post Install of an clean install\033[0m\n"
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# Step 3 (clean install), enable the service in the proper way for this platform
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if [ "${OS}" = "Linux" ]; then
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# Make a user and group for this app, but only if it does not already exist.
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id unpoller >/dev/null 2>&1 || \
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useradd --system --user-group --no-create-home --home-dir /tmp --shell /bin/false unpoller
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elif [ "${OS}" = "OpenBSD" ]; then
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id unpoller >/dev/null 2>&1 || \
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useradd -g =uid -d /tmp -s /bin/false unpoller
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elif [ "${OS}" = "FreeBSD" ]; then
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id unpoller >/dev/null 2>&1 || \
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pw useradd unpoller -d /tmp -w no -s /bin/false
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else
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echo "Unknown OS: ${OS}, please add system user unpoller manually."
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fi
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if [ "${use_systemctl}" = "False" ]; then
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if command -V chkconfig >/dev/null 2>&1; then
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chkconfig --add unpoller
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fi
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service unpoller restart ||:
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else
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# rhel/centos7 cannot use ExecStartPre=+ to specify the pre start should be run as root
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# even if you want your service to run as non root.
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if [ "${systemd_version}" -lt 231 ]; then
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printf "\033[31m systemd version %s is less then 231, fixing the service file \033[0m\n" "${systemd_version}"
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sed -i "s/=+/=/g" /etc/systemd/system/unpoller.service
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fi
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printf "\033[32m Reload the service unit from disk\033[0m\n"
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systemctl daemon-reload ||:
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printf "\033[32m Unmask the service\033[0m\n"
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systemctl unmask unpoller ||:
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printf "\033[32m Set the preset flag for the service unit\033[0m\n"
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systemctl preset unpoller ||:
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printf "\033[32m Set the enabled flag for the service unit\033[0m\n"
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systemctl enable unpoller ||:
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systemctl restart unpoller ||:
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fi
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}
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upgrade() {
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printf "\033[32m Post Install of an upgrade\033[0m\n"
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# Step 3(upgrade), do what you need
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}
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# Step 2, check if this is a clean install or an upgrade
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action="$1"
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if [ "$1" = "configure" ] && [ -z "$2" ]; then
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# Alpine linux does not pass args, and deb passes $1=configure
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action="install"
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elif [ "$1" = "configure" ] && [ -n "$2" ]; then
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# deb passes $1=configure $2=<current version>
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action="upgrade"
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fi
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case "$action" in
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"1" | "install")
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cleanInstall
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;;
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"2" | "upgrade")
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printf "\033[32m Post Install of an upgrade\033[0m\n"
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upgrade
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;;
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*)
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# $1 == version being installed
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printf "\033[32m Alpine\033[0m"
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cleanInstall
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;;
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esac
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# Step 4, clean up unused files, yes you get a warning when you remove the package, but that is ok.
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cleanup
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