# Function for sshfs front end menu

function f-sshfs ()
{

explain ()
{
clear ; fig-col
figlet sshfs
info-col ; echo
cat << EOSSHFS

Briefly, "ssh" is a protocol that allows secure encrypted access to other machines
that have an "ssh daemon" (server) installed. To use ssh you must have an account
on the remote "host" (server machine). You need your user name on that machine, and
usually a password, unless ssh has been configured to allow "keypairs" for login.

"Sshfs" is a clever system that allows you to access filesystems remotely via ssh, yet 
have the contents appear in a "mountpoint" directory on your local machine. 

INX uses $HOME/sshfs as the directory to contain mountpoints, and creates directories 
in it according to the IP number or hostname of the "remote host".

You can choose which program to use for browsing the "share" (for example, the music 
player MOC, the file manager Midnight Commander, and so on).

You can connect/mount or disconnect/unmount shares. On "unmounting", the mountpoint 
directory is removed by the INX "menu method" until you reconnect, to avoid confusion. 

Be aware that unmounting will fail if the directory is in use!

EOSSHFS
echo ; echo ; fig-col
echo "Hit any key to continue..."

read -s -n 1

clear ; fig-col ; echo
echo "If you prefer, you can do this from the command line, of course."
echo ; head-col
echo "The commands for do-it-yourself are on these lines:"
echo ; info-col
echo "Make a directory (preferably in $HOME) to act as a mountpoint:"
echo ; yellow ; bold
echo "mkdir -p /path/to/mountpoint"
echo ; info-col
echo "To mount:"
bold ; yellow ; echo
echo "sshfs username@remote.host:/optional/path /path/to/mountpoint"
echo ; info-col
echo "To unmount:"
echo ; bold ; yellow
echo "fusermount -u /path/to/mountpoint"
echo ; info-col
echo 
echo "\"mountpoint\" can of course be any directory you create that is readable and writable."
echo
echo "You can, obviously, also use ssh in the usual manner for shell access, but sshfs
gives you local access to files as if you had them on your machine - with some lag,
naturally, if accessing over slow links. On a local network, the lag is rarely noticeable."
echo
echo "For shell access only, as opposed to sshfs, the stock command is:"
echo ; yellow ; bold
echo "ssh remote-username@IP-or-host"
echo ; echo ; fig-col
echo "Hit any key to return to the sshfs access menu."
read -s -n 1
f-sshfs
}

options ()
{
# Just opens a few possibilities at the selected mount point
clear
fig-col
figlet options 
echo ; head-col
echo "Choose an access method for $SSHOST:"
info-col
echo
echo "1: Midnight Commander (mc)."
echo "2: Vifm. "
echo "3: The MOC music player."
echo "4: Give me a command prompt at the mount point."
echo
head-col
echo "x: Just give me a prompt."
echo ; fig-col
echo "Any other key to return to the access menu."
f-ttynum
read -s -n 1 ACCESS
case $ACCESS in
	1)
	echo
	f-sup
	echo
	mc $HOME/sshfs/$SSHOST
	options
	;;
	2)
	echo
	f-sup
	echo
	vifm $HOME/sshfs/$SSHOST
	options
	;;
	3)
	echo
	f-sup
	echo
	mocp $HOME/sshfs/$SSHOST
	options
	;;
	4)
	cd $HOME/sshfs/$SSHOST
	clear
	echo
	echo "This is a subshell - exit when you have finished, and you will return to the options menu."
	unbold ; white ; echo
	/bin/bash && cd
	options
	;;
	x)
	clear
	f-prompt
	;;
	*)
	f-sshfs
	;;

esac
}

connect ()
{
clear
fig-col
figlet mount share
echo
head-col
echo "Please enter the address or IP number of the server. (e.g. bleep.org , 10.1.1.2 )"
echo ; white
read SSHOST
echo ; head-col
echo "Enter your user name on the remote server (e.g. bill, linus)"
echo ; white
read SSHNAME
echo ; head-col
echo "Enter the remote directory path to access ( leave blank for your remote home directory)"
echo ; white
read DIRPATH
echo ; head-col

echo "Your $DIRPATH directory on $SSHNAME@$SSHOST will be mounted at $HOME/sshfs/$SSHOST"
white
	
	
	echo ; info-col
	echo "If this is your first connection to $SSHOST, you will be asked to confirm."
	head-col ; echo
	echo "Hit < n > to abort: <enter> or any other key to connect."
	read -s -n 1 CONNECT
	case $CONNECT in
		n)
		white
		f-sshfs		
		;;
		*)	
		echo
		f-sup
		# Make the mountpoint
		if ! [ -d $HOME/sshfs/$SSHOST ] ; then
			mkdir -p $HOME/sshfs/$SSHOST
		fi
		# If we can't connect port 22, forget it... 'nc -w 2 -z $SSHOST 22' checks...
		# Adding port options just means asking more questions... 
		if ! nc -w 2 -z $SSHOST 22 ; then
		echo
		echo "\"$SSHOST\" doesn't seem to be listening (at least on the standard ssh port [22])"
		echo "Either try again later, or use command-line sshfs to specify the port."
		echo "Hit any key to return to the sshfs menu."
			read -s -n 1
			rm -rf $HOME/sshfs/"$SSHOST"
			f-sshfs
		fi
		echo
		if ! sshfs "$SSHNAME"@"$SSHOST":"$DIRPATH" "$HOME"/sshfs/"$SSHOST" 
			then
			echo
			echo "There seems to be a problem... try again."
			sleep 3
			#Could be in use
			if grep $SSHOST /etc/mtab > /dev/null 2>&1 ; then
				echo
				echo "$SSHOST appears to be mounted already."
				sleep 3
				f-sshfs
			else
				rm -rf $HOME/sshfs/"$SSHOST"
				f-sshfs
			fi
		else
			options
		fi		
		
		;;
	esac	
	

}		

browse ()
{
clear
bold ; fig-col ; echo
figlet browse remote files
echo
head-col
echo "Browse your remote file systems (sshfs)"
mountcheck
head-col ; echo
echo "Choose by number - any non-number key to return to the access menu."

info-col ; echo
COUNT=1
for dir in $(ls -d $HOME/sshfs/*)
do printf $COUNT ; printf ': ' ; printf "$(basename $dir)" ; echo
echo $(basename $dir) > /tmp/access"$COUNT"
COUNT=$((( $COUNT + 1 )))
done 
echo
f-ttynum
read -s -n 1 SERVER
case $SERVER in
	[1-9])
	SSHOST=$(cat /tmp/access"$SERVER")
	rm -f /tmp/access*
	options
	;;
	*)
	f-sshfs
	;;
esac
	
}

mountcheck ()
{
if grep sshfs /etc/mtab > /dev/null 2>&1 ; then
	echo ; fig-col
        echo "According to /etc/mtab, you have the following mounted with sshfs."
        echo ; bold ; green ; bred ; grep sshfs /etc/mtab | cut -d' ' -f1
        bblack
else
	echo ; head-col
        echo "You don't have any mounted remote filesystems now, according to /etc/mtab."
        echo
        echo "Hit any key to return to the access menu."
        white
        read -s -n 1
        f-sshfs
fi
}

                                                        
unmount ()
{
white ; clear
bold ; fig-col ; echo
figlet unmount shares
mountcheck
echo ; head-col
echo "Choose the remote filesystem to unmount and disconnect."
echo ; info-col

COUNT=1
for dir in $(ls -d $HOME/sshfs/*)
do printf $COUNT ; printf ': ' ; printf "$(basename $dir)" ; echo
echo $(basename $dir) > /tmp/access"$COUNT"
COUNT=$((( $COUNT + 1 )))
done

echo ; head-col
echo "Choose by number - any non-number key to return to the access menu."
echo
f-ttynum
read -s -n 1 UNMOUNT
case $UNMOUNT in
	[1-9])
	echo ; head-col
	echo "Unmounting $(cat /tmp/access"$UNMOUNT")"
	fusermount -u $HOME/sshfs/$(cat /tmp/access"$UNMOUNT") 
	echo
	sleep 2
	rmdir $HOME/sshfs/$(cat /tmp/access"$UNMOUNT")
	rm -f /tmp/access*
	unmount
	;;
	*)
	f-sshfs
	;;
esac
}

clear
bold ; fig-col ; echo
figlet Secure Access
echo
head-col
echo "This menu enables access via the ssh file system."
echo ; info-col
echo "1: Connect to an ssh server filesystem	(sshfs)"
echo "2: Browse connected remote filesystems"
echo "3: Disconnect/Unmount remote filesystems"
echo "4: Explain ssh and sshfs."
echo
head-col
echo "m: INX main menu"
echo "w: Net and Web menu"
echo "f: Flip colours"
echo "x: Give me a command prompt"

if grep sshfs /etc/mtab > /dev/null 2>&1 ; then
	info-col ; echo 
	echo "Currently mounted sshfs directories:"
	bold ; echo ; fig-col
	grep sshfs /etc/mtab | cut -d" " -f2
	white
fi

f-ttynum
read -s -n 1 SSHFS
case $SSHFS in
	1)
	connect	
	;;
	2)
	browse
	;;
	3)
	unmount	
	;;
	4)
	explain
	;;
	m)
	f-menu
	;;
	w)
	f-net
	;;
	f)
	export CALL=sharinx
	f-switch
	;;
	x)
	clear
	f-prompt
	;;
	*)
	echo 
	echo "I didn't understand that request - please try again."
	sleep 2
	f-sshfs
	;;
esac

}