[packages] usb-modeswitch: add hotplug handler to invoke usb_modeswitch when a flip flop dongle is detected, the handler should be 100% compatible to Debian usb-modeswitch-data config collection

git-svn-id: svn://svn.openwrt.org/openwrt/packages@22062 3c298f89-4303-0410-b956-a3cf2f4a3e73

utils/usb-modeswitch/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=usb-modeswitch
 PKG_VERSION:=1.1.2
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=http://www.draisberghof.de/usb_modeswitch
@@ -40,6 +40,8 @@ endef
 define Package/usb-modeswitch/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/usb_modeswitch-OpenWrt $(1)/usr/bin/usb_modeswitch
+	$(INSTALL_DIR) $(1)/etc/hotplug.d/usb
+	$(INSTALL_DATA) ./files/modeswitch.hotplug $(1)/etc/hotplug.d/usb/20-modeswitch
 endef
 
 $(eval $(call BuildPackage,usb-modeswitch))

utils/usb-modeswitch/files/modeswitch.hotplug

@@ -0,0 +1,128 @@
+#!/bin/sh
+
+local uVid uPid uMa uPr uSe
+local sVe sMo sRe
+
+local modeswitch="/usr/bin/usb_modeswitch"
+
+
+log() {
+	logger -t "usb-modeswitch" "$@"
+}
+
+sanitize() {
+	sed -e 's/[[:space:]]\+$//; s/[[:space:]]\+/_/g' "$@"
+}
+
+find_scsi_attrs() {
+	[ -n "$DEVPATH" ] && [ -d /sys/$DEVPATH/host* ] && {
+		log "$DEVICENAME is a SCSI device, waiting for it to settle..."
+		local timeout=20
+		while [ $((--timeout)) -ge 0 ]; do
+			[ -d /sys/$DEVPATH/host*/target* ] && {
+				local scsi_dir
+				for scsi_dir in /sys/$DEVPATH/host*/target*/*; do
+					[ -d "$scsi_dir" ] || break
+					case "$scsi_dir" in
+						*/host*/target*/*:*:*:*)
+							sVe=$(sanitize "$scsi_dir/vendor")
+							sMo=$(sanitize "$scsi_dir/model")
+							sRe=$(sanitize "$scsi_dir/rev")
+
+							log "$DEVICENAME: Vendor=${sVe:-?} Model=${sMo:-?} Revision=${sRe:-?}"
+							return 0
+						;;
+					esac
+				done
+			} || {
+				sleep 1
+			}
+		done
+		log "$DEVICENAME: Failed to get SCSI attributes!"
+	}
+
+	return 1
+}
+
+find_usb_attrs() {
+	local usb_dir="/sys/$DEVPATH"
+	[ -f "$usb_dir/idVendor" ] || usb_dir="${usb_dir%/*}"
+
+	uVid=$(cat "$usb_dir/idVendor")
+	uPid=$(cat "$usb_dir/idProduct")
+	uMa=$(sanitize "$usb_dir/manufacturer")
+	uPr=$(sanitize "$usb_dir/product")
+	uSe=$(sanitize "$usb_dir/serial")
+
+	log "$DEVICENAME: Manufacturer=${uMa:-?} Product=${uPr:-?} Serial=${uSe:-?}"
+}
+
+match_config_tag() {
+	local conf="$1"
+	local tag="$2"
+
+	case "${conf##*/}" in
+		*:*$tag=*)
+			local cmp; eval "cmp=\$$tag"
+			local pat="${conf#*:$tag=}"; pat="${pat%%:*}"
+			case "$cmp" in
+				*$pat*) return 0 ;;
+				*) return 1 ;;
+			esac
+		;;
+	esac
+
+	return 0
+}
+
+match_config() {
+	local conf="$1"
+	local tag
+
+	for tag in uMa uPr uSe sVe sMo sRe; do
+		match_config_tag "$conf" "$tag" || return 1
+	done
+
+	return 0
+}
+
+
+
+if [ "$ACTION" = add ]; then
+	[ -d "/etc/usb_modeswitch.d" ] && [ -x "$modeswitch" ] && {
+		case "$DEVICENAME" in
+			*-*:*.*) : ;;
+			*) log "Not handling $DEVICENAME"; exit 0 ;;
+		esac
+
+		find_usb_attrs
+
+		local candidates=0
+		local conf configs
+		for conf in /etc/usb_modeswitch.d/$uVid:$uPid*; do
+			[ -f "$conf" ] || break
+			configs="${configs:+$configs }$conf"
+			$((candidates++))
+		done
+
+		# Found more than one candidate, read SCSI attributes and find the best match
+		[ $candidates -gt 1 ] && {
+			find_scsi_attrs
+			for conf in $configs; do
+				match_config "$conf" && {
+					configs="$conf"
+					candidates=1
+					break
+				}
+			done
+		}
+
+		# If a candidate is remaining, start usb-modeswitch
+		[ -n "$configs" ] && {
+			log "$DEVICENAME: Selecting ${configs%% *} for mode switching"
+			$modeswitch -c "${configs%% *}"
+		} || {
+			log "$DEVICENAME: Device does not seem to need mode switching"
+		}
+	}
+fi