[Cervantes]: wifi fix & misc improvements. (#4341)

* remove unused setting 'internal_storage_mount_point

use filemanagerutil.getDefaultDir() instead
https://github.com/koreader/koreader/blob/master/frontend/apps/filemanager/filemanagerutil.lua#L15

* more info about device frontlight/naturalLight capabilities

* make stock reader fonts available in KOReader

* remove restore-wifi-async leftovers

* wireless: fix wpa_supplicant configuration:

make it compatible w/ debian wheezy binaries
don't try to run enable-wifi.sh more than once

frontend/device/cervantes/device.lua

@@ -30,39 +30,40 @@ local Cervantes = Generic:new{
     touch_switch_xy = true,
     touch_mirrored_x = true,
     touch_probe_ev_epoch_time = true,
-    hasNaturalLight = no,
     hasOTAUpdates = yes,
     hasKeys = yes,
-    internal_storage_mount_point = "/mnt/public/",
+
+    -- all devices, except the original Cervantes Touch, have frontlight
+    hasFrontlight = yes,
+
+    -- currently only Cervantes 4 has coloured frontlight
+    hasNaturalLight = no,
 }
 -- Cervantes Touch
 local CervantesTouch = Cervantes:new{
     model = "CervantesTouch",
     display_dpi = 167,
+    hasFrontlight = no,
 }
 -- Cervantes TouchLight / Fnac Touch Plus
 local CervantesTouchLight = Cervantes:new{
     model = "CervantesTouchLight",
     display_dpi = 167,
-    hasFrontlight = yes,
 }
 -- Cervantes 2013 / Fnac Touch Light
 local Cervantes2013 = Cervantes:new{
     model = "Cervantes2013",
     display_dpi = 212,
-    hasFrontlight = yes,
 }
 -- Cervantes 3 / Fnac Touch Light 2
 local Cervantes3 = Cervantes:new{
     model = "Cervantes3",
     display_dpi = 300,
-    hasFrontlight = yes,
 }
 -- Cervantes 4
 local Cervantes4 = Cervantes:new{
     model = "Cervantes4",
     display_dpi = 300,
-    hasFrontlight = yes,
     hasNaturalLight = yes,
     frontlight_settings = {
         frontlight_white = "/sys/class/backlight/lm3630a_ledb",
@@ -169,7 +170,6 @@ function Cervantes:initNetworkManager(NetworkMgr)
         os.execute("./release-ip.sh")
     end
     function NetworkMgr:restoreWifiAsync()
-        os.execute("./restore-wifi-async.sh")
     end
     function NetworkMgr:isWifiOn()
         return 1 == isConnected()

platform/cervantes/disable-wifi.sh

@@ -1,9 +1,6 @@
 #!/bin/sh
 
 # disable wifi and remove all modules
-killall udhcpc default-script wpa_supplicant 2>/dev/null
-ifconfig eth0 down
-
-if lsmod | grep -q 8189fs; then
-    modprobe -r 8189fs
-fi
+killall udhcpc wpa_supplicant 2>/dev/null
+ifconfig eth0 down 2>/dev/null
+modprobe -r 8189fs 2>/dev/null

platform/cervantes/enable-wifi.sh

@@ -1,13 +1,12 @@
 #!/bin/sh
-WPA_SUPPLICANT_CONF="/mnt/private/koreader/wpa_supplicant.conf"
-CTRL_INTERFACE="/var/run/wpa_supplicant"
 
-# create a new configuration if neccesary.
-if [ ! -f "$WPA_SUPPLICANT_CONF" ]; then
-    echo "ctrl_interface=${CTRL_INTERFACE}" >"$WPA_SUPPLICANT_CONF"
-    echo "update_config=1" >>"$WPA_SUPPLICANT_CONF"
-    sync
-fi
+# Debian Wheezy ships an old wpa_supplicant binary (1.0.3). Please refer to
+# https://manpages.debian.org/wheezy/wpasupplicant/wpa_supplicant.8.en.html
+# to see which command line options are available.
+
+# Do not run this script twice (ie: when no wireless is available or wireless
+# association to ap failed.
+./disable-wifi.sh
 
 if ! lsmod | grep -q 8189fs; then
     modprobe 8189fs
@@ -17,5 +16,4 @@ fi
 ifconfig eth0 up
 sleep 1
 
-pidof wpa_supplicant >/dev/null \
-    || wpa_supplicant -i eth0 -s -O "$CTRL_INTERFACE" -c "$WPA_SUPPLICANT_CONF" -B -D wext 2>/dev/null
+wpa_supplicant -i eth0 -C /var/run/wpa_supplicant -B -D wext 2>/dev/null

platform/cervantes/koreader.sh

@@ -61,6 +61,9 @@ export TESSDATA_PREFIX="data"
 # export dict directory
 export STARDICT_DATA_DIR="data/dict"
 
+# export external font directory
+export EXT_FONT_DIR="/usr/lib/fonts"
+
 # we keep at most 500k worth of crash log
 if [ -e crash.log ]; then
     tail -c 500000 crash.log >crash.log.new