travelmate: update 0.7.2

backend:
* remove redundant 'iwinfo' support & add 'iw' package dependency
* refine stop action & json runtime housekeeping
* various small fixes
* documentation update

frontend (see LuCI repo):
* simplify uplink interface setup (just one Click! ;-),
  now part of the overview tab
* cosmetics

Signed-off-by: Dirk Brenken <dev@brenken.org>

net/travelmate/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=travelmate
-PKG_VERSION:=0.7.1
+PKG_VERSION:=0.7.2
 PKG_RELEASE:=1
 PKG_LICENSE:=GPL-3.0+
 PKG_MAINTAINER:=Dirk Brenken <dev@brenken.org>
@@ -17,6 +17,7 @@ define Package/travelmate
 	SECTION:=net
 	CATEGORY:=Network
 	TITLE:=A wlan connection manager for travel router
+	DEPENDS:=+iw
 	PKGARCH:=all
 endef
 

net/travelmate/files/README.md

@@ -8,6 +8,7 @@ To avoid these kind of deadlocks, travelmate set all station interfaces in an "a
 ## Main Features
 * STA interfaces operating in an "always off" mode, to make sure that the AP is always accessible
 * easy setup within normal OpenWrt/LEDE environment
+* strong LuCI-Support to simplify the interface setup
 * fast uplink connections
 * manual / automatic mode support, the latter one checks the existing uplink connection regardless of ifdown event trigger every n seconds
 * support of devices with multiple radios
@@ -17,14 +18,14 @@ To avoid these kind of deadlocks, travelmate set all station interfaces in an "a
 
 ## Prerequisites
 * [LEDE](https://www.lede-project.org) 17.01 or latest snapshot
-* iw (default) or iwinfo for wlan scanning
+* iw for wlan scanning
 
 ## LEDE trunk Installation & Usage
 * download the package [here](https://downloads.lede-project.org/snapshots/packages/x86_64/packages)
 * install 'travelmate' (_opkg install travelmate_)
-* configure your network to support (multiple) wlan uplinks and set travelmate config options (see below)
-* set 'trm\_enabled' option in travelmate config to '1'
-* travelmate starts automatically during boot and will be triggered by procd interface triggers
+* configure your network:
+    * automatic: use the LuCI frontend with automatic interface setup, that's the recommended way
+    * manual: see detailed configure steps below
 
 ## LuCI travelmate companion package
 * download the package [here](https://downloads.lede-project.org/snapshots/packages/x86_64/luci)
@@ -39,31 +40,30 @@ To avoid these kind of deadlocks, travelmate set all station interfaces in an "a
     * trm\_maxwait => how long (in seconds) should travelmate wait for a successful wlan interface reload action (default: '30')
     * trm\_maxretry => how many times should travelmate try to find an uplink after a trigger event (default: '3')
     * trm\_timeout => timeout in seconds for "automatic mode" (default: '60')
-    * trm\_iw => set this option to '0' to use iwinfo for wlan scanning (default: '1', use iw)
     * trm\_radio => limit travelmate to a dedicated radio, e.g. 'radio0' (default: not set, use all radios)
-    * trm\_iface => restrict the procd interface trigger to a (list of) certain wan interface(s) or disable it at all (default: wwan)
-    * trm\_triggerdelay => additional trigger delay in seconds before travelmate processing starts (default: '2')
+    * trm\_iface => restrict the procd interface trigger to a (list of) certain wan interface(s) or disable it at all (default: trm_wwan)
+    * trm\_triggerdelay => additional trigger delay in seconds before travelmate processing starts (default: '1')
 
 ## Runtime information
 
 **receive travelmate runtime information:**
 <pre><code>
-root@adb2go:/tmp# /etc/init.d/travelmate status
+root@adb2go:~# /etc/init.d/travelmate status
 ::: travelmate runtime information
- travelmate_version : 0.7.0
+ travelmate_version : 0.7.2
  station_connection : true
  station_ssid       : blackhole
- station_interface  : wwan
+ station_interface  : trm_wwan
  station_radio      : radio1
- last_rundate       : 20.04.2017 08:54:48
- system             : LEDE Reboot SNAPSHOT r3974-56457dbcb7
+ last_rundate       : 06.05.2017 06:58:22
+ system             : LEDE Reboot SNAPSHOT r4051-3ddc1914ba
 </code></pre>
 
 ## Setup
-**1. configure a wwan interface in /etc/config/network:**
+**1. configure the travelmate wwan interface in /etc/config/network:**
 <pre><code>
 [...]
-config interface 'wwan'
+config interface 'trm_wwan'
         option proto 'dhcp'
 [...]
 </code></pre>
@@ -73,7 +73,7 @@ config interface 'wwan'
 [...]
 config zone
         option name 'wan'
-        option network 'wan wan6 wwan'
+        option network 'wan wan6 trm_wwan'
 [...]
 </code></pre>
 
@@ -91,7 +91,7 @@ config wifi-iface
 [...]
 config wifi-iface
         option device 'radio0'
-        option network 'wwan'
+        option network 'trm_wwan'
         option mode 'sta'
         option ssid 'example_01'
         option encryption 'psk2+ccmp'
@@ -99,7 +99,7 @@ config wifi-iface
         option disabled '1'
 config wifi-iface
         option device 'radio0'
-        option network 'wwan'
+        option network 'trm_wwan'
         option mode 'sta'
         option ssid 'example_02'
         option encryption 'psk2+ccmp'
@@ -107,7 +107,7 @@ config wifi-iface
         option disabled '1'
 config wifi-iface
         option device 'radio0'
-        option network 'wwan'
+        option network 'trm_wwan'
         option mode 'sta'
         option ssid 'example_03'
         option encryption 'none'

net/travelmate/files/travelmate.conf

@@ -4,11 +4,10 @@
 config travelmate 'global'
 	option trm_enabled '0'
 	option trm_debug '0'
-	option trm_iface 'wwan'
-	option trm_triggerdelay '2'
+	option trm_triggerdelay '1'
 	option trm_automatic '1'
 	option trm_maxwait '30'
 	option trm_maxretry '3'
 	option trm_timeout '60'
-	option trm_iw '1'
+	option trm_iface 'trm_wwan'
 	option trm_rtfile '/tmp/trm_runtime.json'

net/travelmate/files/travelmate.init

@@ -17,7 +17,7 @@ boot()
 
 start_service()
 {
-    if [ $("${trm_init}" enabled; printf ${?}) -eq 0 ]
+    if [ $("${trm_init}" enabled; printf "%u" ${?}) -eq 0 ]
     then
         procd_open_instance "travelmate"
         procd_set_param command "${trm_script}" "${@}"
@@ -27,6 +27,18 @@ start_service()
     fi
 }
 
+stop_service()
+{
+    local rtfile="$(uci -q get travelmate.global.trm_rtfile)"
+
+    rtfile="${rtfile:="/tmp/trm_runtime.json"}"
+    if [ -s "${rtfile}" ]
+    then
+        > "${rtfile}"
+    fi
+    rc_procd start_service
+}
+
 status()
 {
     rc_procd "${trm_script}" status

net/travelmate/files/travelmate.sh

@@ -10,7 +10,7 @@
 #
 LC_ALL=C
 PATH="/usr/sbin:/usr/bin:/sbin:/bin"
-trm_ver="0.7.1"
+trm_ver="0.7.2"
 trm_sysver="$(ubus -S call system board | jsonfilter -e '@.release.description')"
 trm_enabled=0
 trm_debug=0
@@ -18,7 +18,7 @@ trm_automatic=1
 trm_maxretry=3
 trm_maxwait=30
 trm_timeout=60
-trm_iw=1
+trm_iw="$(command -v iw)"
 trm_rtfile="/tmp/trm_runtime.json"
 
 # source required system library
@@ -57,17 +57,11 @@ f_envload()
         exit 0
     fi
 
-    # check for preferred wireless tool
+    # check for wireless tool
     #
-    if [ ${trm_iw} -eq 1 ]
+    if [ -z "${trm_iw}" ]
     then
-        trm_scanner="$(which iw)"
-    else
-        trm_scanner="$(which iwinfo)"
-    fi
-    if [ -z "${trm_scanner}" ]
-    then
-        f_log "error" "no wireless tool for wlan scanning found, please install 'iw' or 'iwinfo'"
+        f_log "error" "no wireless tool found, please install package 'iw'"
     fi
 }
 
@@ -169,7 +163,7 @@ f_status()
         json_get_keys keylist
         for key in ${keylist}
         do
-            json_get_var value ${key}
+            json_get_var value "${key}"
             printf " %-18s : %s\n" "${key}" "${value}"
         done
     fi
@@ -220,21 +214,15 @@ f_main()
             cnt=1
             ap_radio="${ap##*_}"
             ap="${ap%%_*}"
-            if [ -z "$(printf "${trm_stalist}" | grep -Fo "_${ap_radio}")" ]
+            if [ -z "$(printf "%s" "${trm_stalist}" | grep -Fo "_${ap_radio}")" ]
             then
                 continue
             fi
             while [ ${cnt} -le ${trm_maxretry} ]
             do
-                if [ ${trm_iw} -eq 1 ]
-                then
-                    ssid_list="$(${trm_scanner} dev "${ap}" scan 2>/dev/null | \
-                        awk '/SSID: /{if(!seen[$0]++){printf "\"";for(i=2; i<=NF; i++)if(i==2)printf $i;else printf " "$i;printf "\" "}}')"
-                else
-                    ssid_list="$(${trm_scanner} "${ap}" scan | \
-                        awk '/ESSID: ".*"/{ORS=" ";if (!seen[$0]++) for(i=2; i<=NF; i++) print $i}')"
-                fi
-                f_log "debug" "scanner: ${trm_scanner}, ap: ${ap}, ssids: ${ssid_list}"
+                ssid_list="$(${trm_iw} dev "${ap}" scan 2>/dev/null | \
+                    awk '/SSID: /{if(!seen[$0]++){printf "\"";for(i=2; i<=NF; i++)if(i==2)printf $i;else printf " "$i;printf "\" "}}')"
+                f_log "debug" "iw: ${trm_iw}, ap: ${ap}, ssids: ${ssid_list}"
                 if [ -n "${ssid_list}" ]
                 then
                     for sta in ${trm_stalist}
@@ -243,7 +231,7 @@ f_main()
                         sta_radio="${sta##*_}"
                         sta_ssid="$(uci -q get wireless."${config}".ssid)"
                         sta_iface="$(uci -q get wireless."${config}".network)"
-                        if [ -n "$(printf "${ssid_list}" | grep -Fo "\"${sta_ssid}\"")" ] && [ "${ap_radio}" = "${sta_radio}" ]
+                        if [ -n "$(printf "%s" "${ssid_list}" | grep -Fo "\"${sta_ssid}\"")" ] && [ "${ap_radio}" = "${sta_radio}" ]
                         then
                             uci -q set wireless."${config}".disabled=0
                             ubus call network reload