From 7ff4e1085fe37e8c1d1bfd12a6d8c828ad0d435e Mon Sep 17 00:00:00 2001
From: "Christos.K" <freedomrfox@gmail.com>
Date: Tue, 22 Aug 2017 13:48:26 +0300
Subject: Preliminary functions

---
 config.d/controller/modules/functions/ct_prelim.sh | 165 +++++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 config.d/controller/modules/functions/ct_prelim.sh

diff --git a/config.d/controller/modules/functions/ct_prelim.sh b/config.d/controller/modules/functions/ct_prelim.sh
new file mode 100644
index 0000000..2a9cf6b
--- /dev/null
+++ b/config.d/controller/modules/functions/ct_prelim.sh
@@ -0,0 +1,165 @@
+#!/bin/bash
+
+# Exit and print to stderr
+die() {
+	echo "$@" 1>&2 ; exit 1
+}
+
+_call_backup_switch() {
+	_ctflag_switch=0
+	export _ctflag_switch
+}
+
+# CHECK IF LABELS EXIST
+_a_priori_devices() {
+	if [[ -e "/dev/disk/by-label/SYSFS" ]]; then
+		_SYSLABEL=0
+	else
+		_SYSLABEL=1
+	fi
+
+	export _SYSLABEL
+
+	if [[ -e "/dev/disk/by-label/BOOTFS" ]]; then
+		_BOOTLABEL=0
+	else
+		_BOOTLABEL=1
+	fi
+
+	export _BOOTLABEL
+
+	if [[ -e "/dev/disk/by-label/BACKUPFS" ]]; then
+		_BACKUPLABEL=0
+	else
+		_BACKUPLABEL=1
+	fi
+
+	export _BACKUPLABEL
+
+	if [[ -e "/dev/disk/by-label/USERDATAFS" ]]; then
+		_USERDATALABEL=0
+		_NOUSERDATA=0
+	else
+		_USERDATALABEL=1
+		_NOUSERDATA=1
+	fi
+
+	export _NOUSERDATA
+	export _USERDATALABEL
+}
+
+# INTERACTIVE FUNCTION
+# DISABLED BY DEFAULT, PROBABLY WILL BE REMOVED
+_question() {
+	for i in "$@"; do
+		[[ "$i" ]] && echo "$i"
+	done
+
+	while true; do
+		echo "Answer: Y/N "
+		read -rp "Input :: <= " ANS
+		case "${ANS}" in
+			[yY])
+				return 0
+				break;;
+			[nN]])
+				return 1
+				break;;
+		esac
+	done
+
+	unset ANS
+	unset _question_yes_action
+	unset _question_no_action
+}
+
+_shell() {
+	echo -e "\e[33mCalling bash subshell\e[0m"
+	sleep 2
+	echo 'echo -e "\e[33mInside Subshell\e[0m"' >> /root/.bashrc
+	echo 'echo -e "\e[33mExit to return back to parent\e[0m"' >> /root/.bashrc
+	(clear; exec /bin/bash;)
+	sed -i "/Inside Subshell/d" "/root/.bashrc"
+	sed -i "/Exit to return back to parent/d" "/root/.bashrc"
+	echo -e "\e[33mYou are back to parent\e[0m"
+}
+
+# CALL SHELL
+_rescue_shell() {
+	while true; do
+		echo "$*"
+		echo
+		echo "Do you wish to call shell function and fix the issues manually?"
+		echo "Answer Y/N "
+		read -rp "Input :: <= " YN
+		case "$YN" in
+			[yY])
+				chroot_master_loop "SHELL"
+				break;;
+			[nN])
+				break;;
+		esac
+	done
+}
+
+# SUBSHELL LOOP FUNCTION, IT OFFERS
+subshell_loop() {
+	while true; do
+		_shell
+		echo "If you fixed the issue, say CONTINUE proceed"
+		echo "You can answer SHELL to open shell again"
+		echo "Answer? CONTINUE/SHELL: "
+		read -rp "Input :: <= " AANS
+		case "${AANS}" in
+			CONTINUE	)
+				LOOPVAR="EXITSHELL"
+				break;;
+			SHELL 		)
+				LOOPVAR="SHELL"
+				;;
+			*			)
+				;;
+		esac
+	done
+}
+
+# CONTROLLER LOOP FUNCTION
+controller_master_loop() {
+	LOOPVAR="$1"
+	while true; do
+		case "${LOOPVAR}" in
+			SHELL)
+				subshell_loop;;
+			EXITSHELL)
+				break;;
+				
+		esac
+	done
+}
+
+# UNMOUNT TARGET
+_unmount() {
+	k=0
+	if [[ -n "$(grep "$1" "/proc/mounts" | awk -F ' ' '{ print $2 }')" ]]; then
+		while true; do
+			while read -r i; do
+				eval umount -l "$i"/* >/dev/null 2>&1
+				eval umount -l "$i" >/dev/null 2>&1
+			done < <(grep "$1" "/proc/mounts")
+			
+			if [[ -z $(grep "$1" "/proc/mounts") ]]; then
+				break
+			fi
+	
+			if [[ "$k" -ge 20 ]]; then
+				echo "Could not unmount target $1"
+				return 1
+			fi
+
+			((++k))
+		done
+
+	return 0
+
+	fi
+}
\ No newline at end of file
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