From 58e7bfc41f02118e5d8b6f5b08a021d9bc351e00 Mon Sep 17 00:00:00 2001 From: Paul Donald Date: Sun, 11 Feb 2024 18:41:23 +0100 Subject: [PATCH] p910nd: hotplug shellcheck fixes Signed-off-by: Paul Donald --- net/p910nd/files/p910nd.hotplug | 140 ++++++++++++++++---------------- 1 file changed, 72 insertions(+), 68 deletions(-) diff --git a/net/p910nd/files/p910nd.hotplug b/net/p910nd/files/p910nd.hotplug index a1bf4cab9e..1c37a9f4c5 100644 --- a/net/p910nd/files/p910nd.hotplug +++ b/net/p910nd/files/p910nd.hotplug @@ -1,4 +1,5 @@ #!/bin/sh +# shellcheck disable=SC3043 # aka 'local VAR' # c 2024 systemcrash (GitHub) #hotplug.d triggers this script on the plug {in|out} of USB printers @@ -8,7 +9,7 @@ DAEMON=p910nd DAEMON_HOTPLUG="$DAEMON hotplug" DAEMON_ERR="daemon.err" DAEMON_INFO="daemon.info" -DRIVER_HOME_DEFAULT="/opt/"$DAEMON"_drivers" +DRIVER_HOME_DEFAULT=/opt/"$DAEMON"_drivers SYSUPGRADE_CONF="/etc/sysupgrade.conf" # Assumptions: @@ -95,7 +96,7 @@ fi ACTUAL_DEVPATH=${DEVPATH%/usbmisc/lp*} # Prepend /sys/ to get actual device path, ACTUAL_DEVPATH="/sys$ACTUAL_DEVPATH" -[ $DEBUG ] && echo ACTUAL_DEVPATH is $ACTUAL_DEVPATH +[ "$DEBUG" ] && echo ACTUAL_DEVPATH is "$ACTUAL_DEVPATH" PARENT_DEVPATH=$( dirname "${ACTUAL_DEVPATH}" ) # We might need to do this if symlinks are problematic. Might not: # devpath="$(readlink -f $ACTUAL_DEVPATH)" @@ -103,14 +104,14 @@ PARENT_DEVPATH=$( dirname "${ACTUAL_DEVPATH}" ) # https://www.usb.org/sites/default/files/usbprint11a021811.pdf # Check whether connected device is a "Printer" -[ "$(cat "$ACTUAL_DEVPATH/bInterfaceClass")" == "07" ] && [ "$(cat "$ACTUAL_DEVPATH/bInterfaceSubClass")" == "01" ] && iAmAPrinter=true +[ "$(cat "$ACTUAL_DEVPATH/bInterfaceClass")" = "07" ] && [ "$(cat "$ACTUAL_DEVPATH/bInterfaceSubClass")" = "01" ] && iAmAPrinter=true # Not a printer? Bail. -[ ! $iAmAPrinter ] && exit 0 +[ ! "$iAmAPrinter" ] && exit 0 # Port directionality BIP=$( cat "$ACTUAL_DEVPATH/bInterfaceProtocol" ) -[ $DEBUG ] && echo BIP: $BIP +[ "$DEBUG" ] && echo BIP: "$BIP" case $BIP in 01 ) BIDIR=0 @@ -136,51 +137,51 @@ fi # printer driver blobs account for different hw versions anyway, so ignore it. # THIS_USB_VIDPID="3f0/4117" -idVendor=$( cat ""$PARENT_DEVPATH"/idVendor" ) -idProduct=$( cat ""$PARENT_DEVPATH"/idProduct" ) -[ $DEBUG ] && echo idVendor+idProduct: $idVendor + $idProduct +idVendor=$( cat "$PARENT_DEVPATH/idVendor" ) +idProduct=$( cat "$PARENT_DEVPATH/idProduct" ) +[ "$DEBUG" ] && echo idVendor+idProduct: "$idVendor" + "$idProduct" THIS_USB_VIDPID="$idVendor/$idProduct" # Driver blob e.g.: Hewlett-Packard_HP_LaserJet_1018_03f0_4117.bin # Not always available: iSerialNumber=$( cat "$PARENT_DEVPATH/iSerialNumber" 2>/dev/null ) || iSerialNumber=$( cat "$PARENT_DEVPATH/serial" 2>/dev/null ) -[ $DEBUG ] && echo iSerialNumber is $iSerialNumber +[ "$DEBUG" ] && echo iSerialNumber is "$iSerialNumber" # Get the special IEEE1284 Device ID string (apparently limited to 127 chars) -ieee1284info=$(cat ""$ACTUAL_DEVPATH"/ieee1284_id" ) -[ $DEBUG ] && echo ieee1284info is $ieee1284info +ieee1284info=$(cat "$ACTUAL_DEVPATH/ieee1284_id" ) +[ "$DEBUG" ] && echo ieee1284info is "$ieee1284info" # Absent the uci daemon hotplug config group, set it to a default -[ -z $(uci -q get $DAEMON.@hotplug[0]) ] && uci -q add $DAEMON hotplug +[ -z "$(uci -q get $DAEMON.@hotplug[0])" ] && uci -q add $DAEMON hotplug # # Absent the driver_home path config, set it to a default -[ -z $(uci -q get $DAEMON.@hotplug[0].driver_home) ] && uci -q set $DAEMON.@hotplug[-1].driver_home=$DRIVER_HOME_DEFAULT && uci -q commit $DAEMON +[ -z "$(uci -q get $DAEMON.@hotplug[0].driver_home)" ] && uci -q set $DAEMON.@hotplug[-1].driver_home=$DRIVER_HOME_DEFAULT && uci -q commit $DAEMON # Make the driver folder hierarchy -if ! $(mkdir -p $DRIVER_HOME_DEFAULT); then - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_ERR "Error running 'mkdir -p "$DRIVER_HOME_DEFAULT"'." +if ! mkdir -p "$DRIVER_HOME_DEFAULT"; then + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_ERR" Error running 'mkdir -p' "$DRIVER_HOME_DEFAULT". fi # Help the folder survive a sysupgrade: -if ! $( grep -q "^$DRIVER_HOME_DEFAULT$" "$SYSUPGRADE_CONF" ); then +if ! grep -q "^$DRIVER_HOME_DEFAULT$" "$SYSUPGRADE_CONF" ; then # TODO: remove old non-existent p910nd paths from $SYSUPGRADE_CONF? # Absent the path, try to add it to $SYSUPGRADE_CONF if ! echo $DRIVER_HOME_DEFAULT >> $SYSUPGRADE_CONF; then - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_ERR "Problem adding "$DRIVER_HOME_DEFAULT" path to $SYSUPGRADE_CONF." + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_ERR" Problem adding "$DRIVER_HOME_DEFAULT" path to "$SYSUPGRADE_CONF." else - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_INFO "Added "$DRIVER_HOME_DEFAULT" path to $SYSUPGRADE_CONF." + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_INFO" Added "$DRIVER_HOME_DEFAULT" path to "$SYSUPGRADE_CONF". fi fi DRIVER_HOME=$(uci -q get $DAEMON.@hotplug[-1].driver_home) -[ $DEBUG ] && echo DRIVER_HOME is $DRIVER_HOME +[ "$DEBUG" ] && echo DRIVER_HOME is "$DRIVER_HOME" # Trim trailing forward slash if it crept in somehow. DRIVER_HOME=${DRIVER_HOME%/} -DRIVER_BLOBNAME_TAIL=""$idVendor"_"$idProduct".bin" -[ $DEBUG ] && echo DRIVER_BLOBNAME_TAIL is $DRIVER_BLOBNAME_TAIL +DRIVER_BLOBNAME_TAIL="$idVendor"_"$idProduct".bin +[ "$DEBUG" ] && echo DRIVER_BLOBNAME_TAIL is "$DRIVER_BLOBNAME_TAIL" # Global device config number variable @@ -190,28 +191,30 @@ UCI_DEV_CFG_NUMBER=-1 # find which daemon configs have the matching lpX interface match_current_device() { # Build array of /dev/usb/lpX character devices already configured - set -- $(IFS="\n" && uci -q batch <<- EOI - get $DAEMON.@$DAEMON[0].device - get $DAEMON.@$DAEMON[1].device - get $DAEMON.@$DAEMON[2].device - get $DAEMON.@$DAEMON[3].device - get $DAEMON.@$DAEMON[4].device - get $DAEMON.@$DAEMON[5].device - get $DAEMON.@$DAEMON[6].device - get $DAEMON.@$DAEMON[7].device - get $DAEMON.@$DAEMON[8].device - get $DAEMON.@$DAEMON[9].device + + set -- "$(IFS=$(printf '\n') && uci -q batch <<- EOI + get "$DAEMON".@"$DAEMON"[0].device + get "$DAEMON".@"$DAEMON"[1].device + get "$DAEMON".@"$DAEMON"[2].device + get "$DAEMON".@"$DAEMON"[3].device + get "$DAEMON".@"$DAEMON"[4].device + get "$DAEMON".@"$DAEMON"[5].device + get "$DAEMON".@"$DAEMON"[6].device + get "$DAEMON".@"$DAEMON"[7].device + get "$DAEMON".@"$DAEMON"[8].device + get "$DAEMON".@"$DAEMON"[9].device EOI - ) + )" # $1-$10 are now set x=0 + # shellcheck disable=SC2068 for i in $@; do # $DEVNAME is passed by hotplug - [ $DEBUG ] && echo UCI_DEV_CFG_NUMBER is $UCI_DEV_CFG_NUMBER and CHAR_DEV is $CHAR_DEV - [ $DEVNAME == ${i#/dev/} ] && UCI_DEV_CFG_NUMBER=$x && CHAR_DEV=$i + [ "$DEBUG" ] && echo UCI_DEV_CFG_NUMBER is $UCI_DEV_CFG_NUMBER and CHAR_DEV is "$CHAR_DEV" + [ "$DEVNAME" = "${i#/dev/}" ] && UCI_DEV_CFG_NUMBER=$x && CHAR_DEV=$i # TODO: multiple configured devices could have same CHAR_DEV if not connected concurrently - x=$(( $x+1 )) + x=$(( x+1 )) done } @@ -238,17 +241,18 @@ get_and_store_printer_info() { # Build array of /dev/usb/lpX character devices already configured match_current_device - uqgddu_cmd="uci -q get $DAEMON.@$DAEMON[$UCI_DEV_CFG_NUMBER]" - uqsddu_cmd="uci -q set $DAEMON.@$DAEMON[$UCI_DEV_CFG_NUMBER]" + uqgddu_cmd='uci -q get '"$DAEMON".@"$DAEMON"[$UCI_DEV_CFG_NUMBER] + uqsddu_cmd='uci -q set '"$DAEMON".@"$DAEMON"[$UCI_DEV_CFG_NUMBER] # set Internal Field Separator to semicolon found in ieee1284_id files IFS=";" # Got 1284 Device ID string - set -- $ieee1284info - [ $DEBUG ] && echo ieee1284info: $ieee1284info + set -- "$ieee1284info" + [ "$DEBUG" ] && echo ieee1284info: "$ieee1284info" - for i in "$@"; do - [ $DEBUG ] && echo i:"$i" + # shellcheck disable=SC2068 + for i in $@; do + [ "$DEBUG" ] && echo i:"$i" case $i in MFG:* | MANUFACTURER:* | MFR:* ) @@ -273,10 +277,10 @@ get_and_store_printer_info() { VER=${i##*:};; esac - [ -n "$SN" ] || SN=$iSerialNumber - [ $DEBUG ] && echo ${MFG:+MFG=$MFG} ${MDL:+MDL=$MDL} ${CMD:+CMD=$CMD} ${CLS:+CLS=$CLS} ${DES:+DES=$DES} ${SN:+SN=$SN} + [ -n "$SN" ] || SN="$iSerialNumber" + [ "$DEBUG" ] && echo ${MFG:+MFG=$MFG} ${MDL:+MDL=$MDL} ${CMD:+CMD=$CMD} ${CLS:+CLS=$CLS} ${DES:+DES=$DES} ${SN:+SN=$SN} - [ $DEBUG ] && echo 'uci set' for UCI_DEV_CFG_NUMBER: $UCI_DEV_CFG_NUMBER + [ "$DEBUG" ] && echo 'uci set' for UCI_DEV_CFG_NUMBER: $UCI_DEV_CFG_NUMBER # Take the USB info as fact: set bidir regardless. It seems to be a source of confusion. eval "$uqsddu_cmd.bidirectional='$BIDIR'" [ -z "$(eval "$uqgddu_cmd".port)" ] && eval "$uqsddu_cmd.port='0'" @@ -301,12 +305,12 @@ get_and_store_printer_info() { # No previously configured device? Configure this instance. Set CHAR_DEV so we can send driver. [ $UCI_DEV_CFG_NUMBER -eq -1 ] && eval "$uqsddu_cmd.device=/dev/'$DEVNAME'" && CHAR_DEV=/dev/"$DEVNAME" - if [ -n "$MFG" ] && [ -n "$MDL" ] && [ -n "$DRIVER_BLOBNAME_TAIL" ] && [ -z "$($uqgddu_cmd.driver_file)" ]; then + if [ -n "$MFG" ] && [ -n "$MDL" ] && [ -n "$DRIVER_BLOBNAME_TAIL" ] && [ -z "$(eval "$uqgddu_cmd".driver_file)" ]; then DRIVER_FILE="$MFG"_"$MDL"_"$DRIVER_BLOBNAME_TAIL" # Make blob filename more friendly: change space to underscore - DRIVER_FILE="$DRIVER_HOME"/"${DRIVER_FILE// /_}" - [ $DEBUG ] && echo DRIVER_FILE: $DRIVER_FILE - uci set $DAEMON.@$DAEMON[$UCI_DEV_CFG_NUMBER].driver_file="$DRIVER_FILE" + DRIVER_FILE="$DRIVER_HOME"/"$(echo "$DRIVER_FILE" | sed 's/ /_/g')" + [ "$DEBUG" ] && echo DRIVER_FILE: "$DRIVER_FILE" + uci set "$DAEMON".@"$DAEMON"[$UCI_DEV_CFG_NUMBER].driver_file="$DRIVER_FILE" fi done @@ -314,27 +318,27 @@ get_and_store_printer_info() { } daemon_restart() { - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_INFO "(Re)starting $DAEMON" + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_INFO" "(Re)starting $DAEMON" /etc/init.d/$DAEMON restart } daemon_stop() { - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_INFO "Stopping $DAEMON" + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_INFO" "Stopping $DAEMON" /etc/init.d/$DAEMON stop } send_driver() { - DRIVER_FILE=$( uci -q get $DAEMON.@$DAEMON[$UCI_DEV_CFG_NUMBER].driver_file ) + DRIVER_FILE=$( uci -q get "$DAEMON".@"$DAEMON"[$UCI_DEV_CFG_NUMBER].driver_file ) - if [ -e $DRIVER_FILE ]; then - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_INFO "Sending driver to $DAEMON printer $THIS_USB_VIDPID" + if [ -e "$DRIVER_FILE" ]; then + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_INFO" "Sending driver to $DAEMON printer $THIS_USB_VIDPID" - if ! cat $DRIVER_FILE > $CHAR_DEV; then - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_ERR "Sending driver to $CHAR_DEV [ $THIS_USB_VIDPID ] failed for some reason." + if ! cat "$DRIVER_FILE" > "$CHAR_DEV"; then + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_ERR" "Sending driver to $CHAR_DEV [ $THIS_USB_VIDPID ] failed for some reason." else - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_INFO "Sent $DRIVER_FILE to $CHAR_DEV [ $THIS_USB_VIDPID ]." + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_INFO" "Sent $DRIVER_FILE to $CHAR_DEV [ $THIS_USB_VIDPID ]." daemon_restart fi else - logger -t "$DAEMON_HOTPLUG" -p $DAEMON_ERR "Missing driver file: $DRIVER_FILE for $CHAR_DEV [ $THIS_USB_VIDPID ] (please upload it)." + logger -t "$DAEMON_HOTPLUG" -p "$DAEMON_ERR" "Missing driver file: $DRIVER_FILE for $CHAR_DEV [ $THIS_USB_VIDPID ] (please upload it)." fi } @@ -348,27 +352,27 @@ case "$ACTION" in get_and_store_printer_info - [ $DEBUG ] && echo THIS_USB_VIDPID: $THIS_USB_VIDPID - [ $DEBUG ] && echo CHAR_DEV: $CHAR_DEV + [ "$DEBUG" ] && echo THIS_USB_VIDPID: "$THIS_USB_VIDPID" + [ "$DEBUG" ] && echo CHAR_DEV: "$CHAR_DEV" # usb subsys only: - # [ $DEBUG ] && echo DEVTYPE: $DEVTYPE - # [ $DEBUG ] && echo DEV_TYPE_FILTER: $DEV_TYPE_FILTER - # [ $DEBUG ] && echo PRODUCT: $PRODUCT + # [ "$DEBUG" ] && echo DEVTYPE: $DEVTYPE + # [ "$DEBUG" ] && echo DEV_TYPE_FILTER: $DEV_TYPE_FILTER + # [ "$DEBUG" ] && echo PRODUCT: $PRODUCT # Extra checks available when run as hotplug usb script: # [ "$DEVTYPE" == "${DEV_TYPE_FILTER}" ] # [ -z "${PRODUCT##*$THIS_USB_VIDPID*}" ] # Ensure dev is character device - if [ -n "$THIS_USB_VIDPID" ] && [ -c $CHAR_DEV ]; then + if [ -n "$THIS_USB_VIDPID" ] && [ -c "$CHAR_DEV" ]; then # if zero string, i.e. usb_ID is a match for $PRODUCT supplied by hotplug - if [ $(uci -q get $DAEMON.@$DAEMON[$UCI_DEV_CFG_NUMBER].usbvidpid) == "$THIS_USB_VIDPID" ]; then - [ $DEBUG ] && echo "THIS_USB_VIDPID match for $DAEMON device $THIS_USB_VIDPID." + if [ "$(uci -q get "$DAEMON".@"$DAEMON"[$UCI_DEV_CFG_NUMBER].usbvidpid)" = "$THIS_USB_VIDPID" ]; then + [ "$DEBUG" ] && echo "THIS_USB_VIDPID match for $DAEMON device $THIS_USB_VIDPID." send_driver else - [ $DEBUG ] && echo "No THIS_USB_VIDPID match." + [ "$DEBUG" ] && echo "No THIS_USB_VIDPID match." fi fi @@ -386,4 +390,4 @@ case "$ACTION" in esac # Commit any changes -[ -n $( uci -q changes $DAEMON ) ] && uci commit $DAEMON +[ -n "$( uci -q changes $DAEMON )" ] && uci commit $DAEMON -- 2.30.2