cnssh: refactor so cnsftp can reuse cnssh for sftp mode

.bashrc.d/cnssh.bash

@@ -32,10 +32,19 @@ cnssh() {	# Helper for sshing into Crestron devices
 	# Initialize and populate default config array
 	declare -A dconf
 	dconf=(
+		[method]="ssh"
 		[uname]="Crestron"
 		[pass]=""
 	)
 
+	declare -A sshopts
+	sshopts=(
+		[StrictHostKeyChecking]="no"
+		[GlobalKnownHostsFile]="/dev/null"
+		[UserKnownHostsFile]="/dev/null"
+		[LogLevel]="ERROR"
+	)
+
 	# Config init
 	####
 
@@ -83,6 +92,26 @@ cnssh() {	# Helper for sshing into Crestron devices
 		fi
 	done
 
+	# Set ssh user name
+	sshopts[User]="${cnssh_conf[uname]}"
+
+	# Set ssh host if not using sftp mode
+	case ${cnssh_conf[method]} in
+		ssh)
+			sshopts[Host]="${cnssh_conf[addr]}"
+			;;
+		sftp)
+			:
+			;;
+		*)
+			echo "Unknown method: ${cnssh_conf[method]}"
+			;;
+	esac
+
+	for opt in "${!sshopts[@]}"; do
+		sshoptstring="$sshoptstring -o $opt=${sshopts[$opt]}"
+	done
+
 	# Option Parsing
 	####
 
@@ -90,13 +119,10 @@ cnssh() {	# Helper for sshing into Crestron devices
 	####
 	# Main
 
-	sshpass -p "${cnssh_conf[pass]}" ssh \
-		-o StrictHostKeyChecking=no\
-		-o GlobalKnownHostsFile=/dev/null\
-		-o UserKnownHostsFile=/dev/null\
-		-o LogLevel=ERROR\
-		-o User="${cnssh_conf[uname]}"\
-		"${cnssh_conf[addr]}" "${cnssh_conf[cmd]}"
+	sshpass -p "${cnssh_conf[pass]}" \
+		"${cnssh_conf[method]}" \
+		$sshoptstring \
+		"${cnssh_conf[cmd]}"
 
 	# Main
 	####
@@ -104,15 +130,14 @@ cnssh() {	# Helper for sshing into Crestron devices
 
 
 cnsftp() {
-	local uname="Crestron"
-	local pass=""
-	local cmd="$@"
+	# Initialize config array if it doesn't already exist
+	if [[ ! -v cnssh_conf[@] ]]; then
+		declare -A cnssh_conf
+	fi
 
-	sshpass -p "$pass" sftp \
-		-o StrictHostKeyChecking=no\
-		-o GlobalKnownHostsFile=/dev/null\
-		-o UserKnownHostsFile=/dev/null\
-		-o LogLevel=ERROR\
-		-o User="$uname" \
-		"$cmd"
+	# Set sftp mode instead of ssh
+	cnssh_conf[method]="sftp"
+	cnssh_conf[cmd]="$*"
+
+	cnssh
 }