comgt-ncm: Fix NCM protocol

This patch fixes the NCM protocol by adding the missing ifname
to the netifd script and changing one unintended "send" statement to
"print" in runcommand.gcom. It also cleans up logging and makes the
manufacturer names case-insensitive. Furthermore, comgt-ncm should
not depend on the USB-serial-related kernel modules, as the cdc-wdm
control device works without them. There is also no need to depend on
kmod-huawei-cdc-ncm, since other manufacturers (like Sony-Ericsson
and Samsung) which use other kernel modules should also be supported.

I'd appreciate if someone with Samsung or Sony-Ericsson modems could
test this, I was only able to test it with Huawei E3276, E3372 and
E353.

Signed-off-by: Matti Laakso <malaakso@elisanet.fi>

SVN-Revision: 44182

package/network/utils/comgt/Makefile

@@ -44,7 +44,7 @@ endef
 define Package/comgt-ncm
 $(call Package/comgt/Default)
   TITLE+=NCM 3G/4G Support
-  DEPENDS:=+comgt +kmod-usb-serial +kmod-usb-serial-option +kmod-usb-net +kmod-usb-net-cdc-ncm +kmod-usb-net-huawei-cdc-ncm
+  DEPENDS:=+comgt
 endef
 
 define Package/comgt/description

package/network/utils/comgt/files/ncm.json

@@ -19,7 +19,7 @@
 		"connect": "AT^NDISDUP=1,1,\\\"${apn}\\\"${username:+,\\\"$username\\\"}${password:+,\\\"$password\\\"}${auth:+,$auth}",
 		"disconnect": "AT^NDISDUP=1,0"
 	},
-	"SAMSUNG": {
+	"samsung": {
 		"initialize": [
 			"AT",
 			"AT+CGREG=2",
@@ -33,7 +33,7 @@
 		"connect": "AT+CGATT=1",
 		"disconnect": "AT+CGATT=0"
 	},
-	"Sony": {
+	"sony": {
 		"initialize": [
 			"AT+CFUN=1",
 			"AT+CGDCONT=1,\\\"IP\\\",\\\"${apn}\\\"",

package/network/utils/comgt/files/ncm.sh

@@ -1,8 +1,10 @@
 #!/bin/sh
 
+[ -n "$INCLUDE_ONLY" ] || {
 	. /lib/functions.sh
 	. ../netifd-proto.sh
 	init_proto "$@"
+}
 
 proto_ncm_init_config() {
 	no_device=1
@@ -20,34 +22,52 @@ proto_ncm_init_config() {
 proto_ncm_setup() {
 	local interface="$1"
 
-	local manufacturer initialize setmode connect
+	local manufacturer initialize setmode connect ifname devname devpath
 
 	local device apn auth username password pincode delay mode
 	json_get_vars device apn auth username password pincode delay mode
 
 	[ -n "$device" ] || {
-		echo "ncm[$$]" "No control device specified"
+		echo "No control device specified"
 		proto_notify_error "$interface" NO_DEVICE
 		proto_set_available "$interface" 0
 		return 1
 	}
 	[ -e "$device" ] || {
-		echo "ncm[$$]" "Control device not valid"
+		echo "Control device not valid"
 		proto_set_available "$interface" 0
 		return 1
 	}
 	[ -n "$apn" ] || {
-		echo "ncm[$$]" "No APN specified"
+		echo "No APN specified"
 		proto_notify_error "$interface" NO_APN
 		proto_set_available "$interface" 0
 		return 1
 	}
 
+	devname="$(basename "$device")"
+	case "$devname" in
+	'tty'*)
+		devpath="$(readlink -f /sys/class/tty/$devname/device)"
+		ifname="$( ls "$devpath"/../../*/net )"
+		;;
+	*)
+		devpath="$(readlink -f /sys/class/usbmisc/$devname/device/)"
+		ifname="$( ls "$devpath"/net )"
+		;;
+	esac
+	[ -n "$ifname" ] || {
+		echo "The interface could not be found."
+		proto_notify_error "$interface" NO_IFACE
+		proto_set_available "$interface" 0
+		return 1
+	}
+
 	[ -n "$delay" ] && sleep "$delay"
 
-	manufacturer=`gcom -d "$device" -s /etc/gcom/getcardinfo.gcom | awk '/Manufacturer/ { print $2 }'`
+	manufacturer=`gcom -d "$device" -s /etc/gcom/getcardinfo.gcom | awk '/Manufacturer/ { print tolower($2) }'`
 	[ $? -ne 0 ] && {
-		echo "ncm[$$]" "Failed to get modem information"
+		echo "Failed to get modem information"
 		proto_notify_error "$interface" GETINFO_FAILED
 		proto_set_available "$interface" 0
 		return 1
@@ -56,7 +76,7 @@ proto_ncm_setup() {
 	json_load "$(cat /etc/gcom/ncm.json)"
 	json_select "$manufacturer"
 	[ $? -ne 0 ] && {
-		echo "ncm[$$]" "Unsupported modem"
+		echo "Unsupported modem"
 		proto_notify_error "$interface" UNSUPPORTED_MODEM
 		proto_set_available "$interface" 0
 		return 1
@@ -64,7 +84,7 @@ proto_ncm_setup() {
 	json_get_values initialize initialize
 	for i in $initialize; do
 		eval COMMAND="$i" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
-			echo "ncm[$$]" "Failed to initialize modem"
+			echo "Failed to initialize modem"
 			proto_notify_error "$interface" INITIALIZE_FAILED
 			proto_set_available "$interface" 0
 			return 1
@@ -73,7 +93,7 @@ proto_ncm_setup() {
 
 	[ -n "$pincode" ] && {
 		PINCODE="$pincode" gcom -d "$device" -s /etc/gcom/setpin.gcom || {
-			echo "ncm[$$]" "Unable to verify PIN"
+			echo "Unable to verify PIN"
 			proto_notify_error "$interface" PIN_FAILED
 			proto_block_restart "$interface"
 			return 1
@@ -83,7 +103,7 @@ proto_ncm_setup() {
 		json_select modes
 		json_get_var setmode "$mode"
 		COMMAND="$setmode" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
-			echo "ncm[$$]" "Failed to set operating mode"
+			echo "Failed to set operating mode"
 			proto_notify_error "$interface" SETMODE_FAILED
 			proto_set_available "$interface" 0
 			return 1
@@ -91,66 +111,66 @@ proto_ncm_setup() {
 		json_select ..
 	}
 
-	json_get_var connect connect
+	json_get_vars connect
 	eval COMMAND="$connect" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
-		echo "ncm[$$]" "Failed to connect"
+		echo "Failed to connect"
 		proto_notify_error "$interface" CONNECT_FAILED
 		proto_set_available "$interface" 0
 		return 1
 	}
 
-	echo "ncm[$$]" "Connected, starting DHCP"
-	proto_init_update "*" 1
+	echo "Connected, starting DHCP"
+	
+	proto_init_update "$ifname" 1
 	proto_send_update "$interface"
 
 	json_init
 	json_add_string name "${interface}_dhcp"
 	json_add_string ifname "@$interface"
 	json_add_string proto "dhcp"
-	json_close_object
 	ubus call network add_dynamic "$(json_dump)"
 
 	json_init
 	json_add_string name "${interface}_dhcpv6"
 	json_add_string ifname "@$interface"
 	json_add_string proto "dhcpv6"
-	json_close_object
 	ubus call network add_dynamic "$(json_dump)"
 }
 
 proto_ncm_teardown() {
 	local interface="$1"
 
-	proto_init_update "*" 0
-	proto_send_update "$interface"
-
 	local manufacturer disconnect
 
 	local device
 	json_get_vars device
 
-	echo "ncm[$$]" "Stopping network"
+	echo "Stopping network"
 
-	manufacturer=`gcom -d "$device" -s /etc/gcom/getcardinfo.gcom | awk '/Manufacturer/ { print $2 }'`
+	manufacturer=`gcom -d "$device" -s /etc/gcom/getcardinfo.gcom | awk '/Manufacturer/ { print tolower($2) }'`
 	[ $? -ne 0 ] && {
-		echo "ncm[$$]" "Failed to get modem information"
+		echo "Failed to get modem information"
 		proto_notify_error "$interface" GETINFO_FAILED
 		return 1
 	}
 
 	json_load "$(cat /etc/gcom/ncm.json)"
 	json_select "$manufacturer" || {
-		echo "ncm[$$]" "Unsupported modem"
+		echo "Unsupported modem"
 		proto_notify_error "$interface" UNSUPPORTED_MODEM
 		return 1
 	}
 
-	json_get_var disconnect disconnect
+	json_get_vars disconnect
 	COMMAND="$disconnect" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
-		echo "ncm[$$]" "Failed to disconnect"
+		echo "Failed to disconnect"
 		proto_notify_error "$interface" DISCONNECT_FAILED
 		return 1
 	}
-}
 
+	proto_init_update "*" 0
+	proto_send_update "$interface"
+}
+[ -n "$INCLUDE_ONLY" ] || {
 	add_protocol ncm
+}

package/network/utils/comgt/files/runcommand.gcom

@@ -6,14 +6,15 @@ opengt
  flash 0.1
 
 :start
- send "sending -> "
+ print "sending -> ",$env("COMMAND"),"\n"
  send $env("COMMAND")
  send "^m"
 
- waitfor 15 "OK","ERR","ERROR"
+ waitfor 15 "OK","ERR","ERROR","COMMAND NOT SUPPORT"
  if % = 0 goto continue
  if % = 1 goto error
  if % = 2 goto error
+ if % = 3 goto notsupported
 
  print "Timeout running AT-command\n"
  exit 1
@@ -22,5 +23,9 @@ opengt
  print "Error running AT-command\n"
  exit 1
 
+:notsupported
+ print "AT-command not supported\n"
+ exit 1
+
 :continue
  exit 0