bashrc/.bashrc.d/cnssh.bash

cnssh() {	# Helper for sshing into Crestron devices
		# 
		# USAGE
		#
		#	cnssh <ip address> [command]
		#
		#
		# OPTIONS
		#
		#	-u <username>		Specify the username to use with ssh
		#				  Default: "Crestron"
		#
		# CONFIG ARRAY: cnssh_conf
		#
		#
		#	| Option	| Valid Args	| Default	| Description					|
		#	| ------------- | ------------- | ------------- | --------------------------------------------- |
		#	| uname		| <string>	| "Crestron"	| The username for use with ssh			|
		#	| pass		| <string>	| ""		| The password for use with ssh (via sshpass)	|
		#	| addr		| <string>	| <ip address>	| The address of the remote device		|
		#	| cmd		| <string>	| [command]	| The command to execute on the remote device	|


	####
	# Config init

	# Initialize runtime config array
	declare -A conf

	# Initialize config array if it doesn't already exist
	if [[ ! -v cnssh_conf[@] ]]; then
		declare -A cnssh_conf
	else
		for opt in "${!cnssh_conf[@]}"; do
			conf[$opt]=${cnssh_conf[$opt]}
		done
	fi

	# Initialize and populate default config array
	declare -A dconf
	dconf=(
		[method]="ssh"
		[uname]="Crestron"
		[pass]=""
	)

	# Apply defaults to running config
	for opt in "${!dconf[@]}"; do
		# Don't apply the default if it's already set
		if [[ ! -v conf[$opt] ]]; then
			conf[$opt]=${dconf[$opt]}
		fi
	done

	declare -A sshopts
	sshopts=(
		[StrictHostKeyChecking]="no"
		[GlobalKnownHostsFile]="/dev/null"
		[UserKnownHostsFile]="/dev/null"
		[LogLevel]="ERROR"
	)

	# Config init
	####


	####
	# Option Parsing

	while getopts ":u:" opt; do
		case $opt in
			u)
				conf[uname]="$OPTARG"
				;;
			\?)
				echo "Unknown option -$OPTARG"
				return 1
				;;
			:)
				echo "Option requires argument: -$OPTARG"
				return 1
				;;
		esac
	done

	# Remove parsed options from $@
	shift $((OPTIND -1))

	# Set the address based on the first 
	#  arg if not already set in config array
	if [[ ! -v conf[addr] ]]; then
		conf[addr]="$1"
		shift 1
	fi

	# Set the command as the rest of argv
	#  if not already set in config array
	if [[ ! -v conf[cmd] ]]; then
		conf[cmd]="$*"
	fi

	# Set ssh user name
	sshopts[User]="${conf[uname]}"

	# Set ssh host if not using sftp mode
	case ${conf[method]} in
		ssh)
			:
			;;
		sftp)
			unset "conf[cmd]"
			;;
		*)
			echo "Unknown method: ${conf[method]}"
			;;
	esac

	# Option Parsing
	####


	####
	# Main

	sshpass -p "${conf[pass]}" \
		"${conf[method]}" \
		$(	# Format sshopts as a string that an ssh program understands
			for opt in "${!sshopts[@]}"; do
				printf '%s %s=%s ' "-o" "$opt" "${sshopts[$opt]}"
			done
		) \
		"${conf[addr]}" \
		"${conf[cmd]}"

	# Main
	####
}


cnsftp() {
	# Initialize config array if it doesn't already exist
	if [[ ! -v cnssh_conf[@] ]]; then
		declare -A cnssh_conf
	fi

	# Set sftp mode instead of ssh
	cnssh_conf[method]="sftp"
	cnssh_conf[addr]="$*"

	cnssh

	unset "cnssh_conf[method]"
	unset "cnssh_conf[addr]"
}