fix: quickemu shellcheck

quickemu

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+#shellcheck disable=SC2054,SC2140
 export LC_ALL=C
 
 if ((BASH_VERSINFO[0] < 4)); then
@@ -962,7 +963,7 @@ function vm_boot() {
 
     # Only enable SPICE is using SPICE display
     if [ "${OUTPUT}" == "none" ] || [ "${OUTPUT}" == "spice" ] || [ "${OUTPUT}" == "spice-app" ]; then
-        args+=(-spice ${SPICE}
+        args+=(-spice "${SPICE}"
             -device virtio-serial-pci
             -chardev socket,id=agent0,path="${VMDIR}/${VMNAME}-agent.sock",server=on,wait=off
             -device virtserialport,chardev=agent0,name=org.qemu.guest_agent.0
@@ -974,7 +975,7 @@ function vm_boot() {
 
     args+=(-device virtio-rng-pci,rng=rng0
         -object rng-random,id=rng0,filename=/dev/urandom
-        -device ${USB_HOST_PASSTHROUGH_CONTROLLER},id=spicepass
+        -device "${USB_HOST_PASSTHROUGH_CONTROLLER}",id=spicepass
         -chardev spicevmc,id=usbredirchardev1,name=usbredir
         -device usb-redir,chardev=usbredirchardev1,id=usbredirdev1
         -chardev spicevmc,id=usbredirchardev2,name=usbredir
@@ -1023,7 +1024,7 @@ function vm_boot() {
     # @INFO: When using the VNC display, you must use the -k parameter to set the keyboard layout if you are not using en-us.
     [ -z "${KEYBOARD_LAYOUT}" ] && KEYBOARD_LAYOUT="$keyboard_layout"
     if [ -n "${KEYBOARD_LAYOUT}" ]; then
-        args+=(-k ${KEYBOARD_LAYOUT})
+        args+=(-k "${KEYBOARD_LAYOUT}")
     fi
 
     # FIXME: Check for device availability. qemu will fail to start otherwise
@@ -1159,8 +1160,7 @@ function vm_boot() {
         args+=(-drive if=ide,index=0,media=disk,file="${disk_img}")
 
     elif [ "${guest_os}" == "windows-server" ]; then
-        args+=(-device ide-hd,drive=SystemDisk
-            -drive id=SystemDisk,if=none,format=qcow2,file="${disk_img}" ${STATUS_QUO})
+        mapfile -t args < <(echo "-device ide-hd,drive=SystemDisk" "-drive id=SystemDisk,if=none,format=qcow2,file=${disk_img}" ${STATUS_QUO})
 
     else
         # shellcheck disable=SC2054,SC2206
@@ -1209,17 +1209,18 @@ function vm_boot() {
         echo " - Monitor:  (off)"
     elif [ "${MONITOR}" == "telnet" ]; then
         # Find a free port to expose monitor-telnet to the guest
-        local temp_port="$(get_port ${MONITOR_TELNET_PORT} 9)"
+        local temp_port=""
+        temp_port="$(get_port "${MONITOR_TELNET_PORT}" 9)"
         if [ -z "${temp_port}" ]; then
             echo " - Monitor:  All Monitor-Telnet ports have been exhausted."
         else
             MONITOR_TELNET_PORT="${temp_port}"
-            args+=(-monitor telnet:${MONITOR_TELNET_HOST}:${MONITOR_TELNET_PORT},server,nowait)
+            args+=(-monitor telnet:"${MONITOR_TELNET_HOST}":"${MONITOR_TELNET_PORT}",server,nowait)
             echo " - Monitor:  On host:  telnet ${MONITOR_TELNET_HOST} ${MONITOR_TELNET_PORT}"
             echo "monitor-telnet,${MONITOR_TELNET_PORT},${MONITOR_TELNET_HOST}" >> "${VMDIR}/${VMNAME}.ports"
         fi
     elif [ "${MONITOR}" == "socket" ]; then
-        args+=(-monitor unix:${VM_MONITOR_SOCKETPATH},server,nowait)
+        args+=(-monitor unix:"${VM_MONITOR_SOCKETPATH}",server,nowait)
         echo " - Monitor:  On host:  nc -U \"${VM_MONITOR_SOCKETPATH}\""
         echo "             or     :  socat -,echo=0,icanon=0 unix-connect:${VM_MONITOR_SOCKETPATH}"
     else
@@ -1246,17 +1247,18 @@ function vm_boot() {
         args+=(-serial none)
     elif [ "${SERIAL}" == "telnet" ]; then
         # Find a free port to expose serial-telnet to the guest
-        local temp_port="$(get_port ${SERIAL_TELNET_PORT} 9)"
+        local temp_port=""
+        temp_port="$(get_port "${SERIAL_TELNET_PORT}" 9)"
         if [ -z "${temp_port}" ]; then
             echo " - Serial:   All Serial-Telnet ports have been exhausted."
         else
             SERIAL_TELNET_PORT="${temp_port}"
-            args+=(-serial telnet:${SERIAL_TELNET_HOST}:${SERIAL_TELNET_PORT},server,nowait)
+            args+=(-serial telnet:"${SERIAL_TELNET_HOST}":"${SERIAL_TELNET_PORT}",server,nowait)
             echo " - Serial:   On host:  telnet ${SERIAL_TELNET_HOST} ${SERIAL_TELNET_PORT}"
             echo "serial-telnet,${SERIAL_TELNET_PORT},${SERIAL_TELNET_HOST}" >> "${VMDIR}/${VMNAME}.ports"
         fi
     elif [ "${SERIAL}" == "socket" ]; then
-        args+=(-serial unix:${VM_SERIAL_SOCKETPATH},server,nowait)
+        args+=(-serial unix:"${VM_SERIAL_SOCKETPATH}",server,nowait)
         echo " - Serial:   On host:  nc -U \"${VM_SERIAL_SOCKETPATH}\""
         echo "             or     :  socat -,echo=0,icanon=0 unix-connect:${VM_SERIAL_SOCKETPATH}"
     else
@@ -1267,8 +1269,12 @@ function vm_boot() {
     if [ -z "${EXTRA_ARGS}" ]; then
         EXTRA_ARGS="${extra_args}"
     fi
+    #if [ -n "${EXTRA_ARGS}" ]; then
+    #    args+=(${EXTRA_ARGS})
+    #fi
     if [ -n "${EXTRA_ARGS}" ]; then
-        args+=(${EXTRA_ARGS})
+        mapfile -t extra_args_array < <(echo "${EXTRA_ARGS}")
+        args+=("${extra_args_array[@]}")
     fi
 
     # The OSK parameter contains parenthesis, they need to be escaped in the shell
@@ -1428,9 +1434,9 @@ function parse_ports_from_file {
     local FILE="${VMDIR}/${VMNAME}.ports"
 
     # parse ports
-    local port_name=( $(cat "$FILE" | cut -d, -f1) )
-    local port_number=( $(cat "$FILE" | cut -d, -f2) )
-    local host_name=( $(cat "$FILE" | gawk 'FS="," {print $3,"."}') )
+    local port_name=( "$(cat "$FILE" | cut -d, -f1)" )
+    local port_number=( "$(cat "$FILE" | cut -d, -f2)" )
+    local host_name=( "$(cat "$FILE" | gawk 'FS="," {print $3,"."}')" )
 
     for ((i=0; i<${#port_name[@]}; i++)); do
         if [ "${port_name[$i]}" == "ssh" ]; then
@@ -1784,7 +1790,7 @@ if [ -n "${VM}" ] && [ -e "${VM}" ]; then
     VM_MONITOR_SOCKETPATH="${VMDIR}/${VMNAME}-monitor.socket"
     VM_SERIAL_SOCKETPATH="${VMDIR}/${VMNAME}-serial.socket"
     if [ ! -f "${disk_img}" ]; then
-        cd "${VMPATH}"
+        cd "${VMPATH}" || echo "ERROR: VM path not exist!"
     fi
 
     # Backwards compatibility for ${driver_iso}