From ce5d1b27b3cfb106408a504c26bf75aac879c3d6 Mon Sep 17 00:00:00 2001
From: Calin Crisan <ccrisan@gmail.com>
Date: Sun, 28 Aug 2016 16:10:12 +0300
Subject: [PATCH] added proper networkless support

---
 board/common/overlay/etc/init.d/S01mountall   | 36 +++-------
 board/common/overlay/etc/init.d/S35wifi       | 14 ++--
 board/common/overlay/etc/init.d/S36ppp        |  6 +-
 board/common/overlay/etc/init.d/S40network    | 68 +++++++++++--------
 board/common/overlay/etc/init.d/S41netwatch   |  3 +
 board/common/overlay/etc/init.d/S50date       |  3 +
 board/common/overlay/etc/init.d/S60sshd       |  3 +
 board/common/overlay/etc/init.d/S61proftpd    |  3 +
 board/common/overlay/etc/init.d/S62smb        |  3 +
 board/common/overlay/etc/init.d/S99showinfo   |  7 +-
 board/common/overlay/etc/init.d/conf          | 29 ++++++++
 board/common/overlay/etc/os.conf              |  4 ++
 .../usr/share/post-upgrade/20160828.sh        |  9 +++
 13 files changed, 123 insertions(+), 65 deletions(-)
 create mode 100644 board/common/overlay/etc/init.d/conf
 create mode 100755 board/common/overlay/usr/share/post-upgrade/20160828.sh

diff --git a/board/common/overlay/etc/init.d/S01mountall b/board/common/overlay/etc/init.d/S01mountall
index 481c65f5433..71ce7bb0182 100755
--- a/board/common/overlay/etc/init.d/S01mountall
+++ b/board/common/overlay/etc/init.d/S01mountall
@@ -1,37 +1,21 @@
 #!/bin/bash
 
-sys_conf="/etc/os.conf"
-boot_conf="/boot/os.conf"
-conf="/data/etc/os.conf"
-
 test -n "$os_version" || source /etc/init.d/base
 
 mount_fs() {
     msg_begin "Mounting filesystems"
     /bin/mount -a
     test $? == 0 && msg_done || msg_fail
+}
 
-    if ! [ -f $conf ]; then
-        if [ -f $boot_conf ]; then
-            cp $boot_conf $conf
-        elif [ -f $sys_conf ]; then
-            cp $sys_conf $conf
-        fi
-    fi
-
-    if [ -f $conf ]; then
-        source $conf
-    fi
-
-    if [ "$os_debug" == "true" ]; then
-        msg_begin "Remounting boot partition read-write"
-        mount -o remount,rw /boot
-        test $? == 0 && msg_done || msg_fail
-
-        msg_begin "Remounting root partition read-write"
-        mount -o remount,rw /
-        test $? == 0 && msg_done || msg_fail
-    fi
+remount_rw() {
+    msg_begin "Remounting boot partition read-write"
+    mount -o remount,rw /boot
+    test $? == 0 && msg_done || msg_fail
+
+    msg_begin "Remounting root partition read-write"
+    mount -o remount,rw /
+    test $? == 0 && msg_done || msg_fail
 }
 
 mk_tty_login() {
@@ -42,6 +26,8 @@ mk_tty_login() {
 case "$1" in
     start)
         mount_fs
+        test -n "$os_debug" || source /etc/init.d/conf
+        test "$os_debug" == "true" && remount_rw
         mk_tty_login
         ;;
 
diff --git a/board/common/overlay/etc/init.d/S35wifi b/board/common/overlay/etc/init.d/S35wifi
index 0332ba5b918..259be279628 100755
--- a/board/common/overlay/etc/init.d/S35wifi
+++ b/board/common/overlay/etc/init.d/S35wifi
@@ -6,7 +6,6 @@ conf="/data/etc/wpa_supplicant.conf"
 
 log="/var/log/wpa_supplicant.log"
 prog="/usr/sbin/wpa_supplicant"
-iface=wlan0
 driver=wext
 
 sys_watch_conf="/etc/watch.conf"
@@ -40,9 +39,12 @@ ssid=$(cat $conf | grep ssid | grep -v scan_ssid | cut -d '"' -f 2)
 test -n "$ssid" || exit 0
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
+
+test "$os_networkless" == "true" && exit 0
 
 connected() {
-    ip link show dev $iface 2>&1 | grep LOWER_UP &> /dev/null && return 0 || return 1
+    ip link show dev $os_wlan 2>&1 | grep LOWER_UP &> /dev/null && return 0 || return 1
 }
 
 watch() {
@@ -68,7 +70,7 @@ start() {
 
     # wait up to 5 seconds for interface
     count=0
-    while ! ifconfig $iface >/dev/null 2>&1; do
+    while ! ifconfig $os_wlan >/dev/null 2>&1; do
         sleep 1
         count=$(($count + 1))
         if [ $count -ge 5 ]; then
@@ -77,10 +79,10 @@ start() {
         fi
     done
     
-    module=$(basename $(readlink /sys/class/net/$iface/device/driver/module 2>/dev/null) 2>/dev/null)
+    module=$(basename $(readlink /sys/class/net/$os_wlan/device/driver/module 2>/dev/null) 2>/dev/null)
 
-    iwconfig $iface power off &> /dev/null
-    $prog -i$iface -c$conf -D$driver -B &> $log
+    iwconfig $os_wlan power off &> /dev/null
+    $prog -i$os_wlan -c$conf -D$driver -B &> $log
     count=0
     while true; do
         sleep 1
diff --git a/board/common/overlay/etc/init.d/S36ppp b/board/common/overlay/etc/init.d/S36ppp
index 041b042b83a..52971f3afc9 100755
--- a/board/common/overlay/etc/init.d/S36ppp
+++ b/board/common/overlay/etc/init.d/S36ppp
@@ -5,7 +5,6 @@ boot_conf="/boot/ppp"
 conf="/data/etc/ppp"
 
 prog="/usr/sbin/pppd"
-dev="ppp0"
 provider="mobile"
 
 watch_conf="/data/etc/watch.conf"
@@ -24,9 +23,12 @@ test -e $conf/modem || exit 0
 test -e $conf/apn || exit 0
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
+
+test "$os_networkless" == "true" && exit 0
 
 connected() {
-    ifconfig | grep $dev &>/dev/null 2>&1 && return 0 || return 1
+    ifconfig | grep $os_ppp &>/dev/null 2>&1 && return 0 || return 1
 }
 
 watch() {
diff --git a/board/common/overlay/etc/init.d/S40network b/board/common/overlay/etc/init.d/S40network
index b19a0df6369..88b9b6dbd39 100755
--- a/board/common/overlay/etc/init.d/S40network
+++ b/board/common/overlay/etc/init.d/S40network
@@ -11,10 +11,7 @@ link_watch=yes
 link_watch_timeout=20
 ip_watch=yes
 ip_watch_timeout=40
-
 link_nego_timeout=10
-eth=eth0
-wlan=wlan0
 
 test -r $watch_conf && source $watch_conf
 
@@ -29,12 +26,13 @@ fi
 test -r $static_conf && source $static_conf
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
 
 watch_eth() {
     count=0
     while true; do
         sleep 5
-        if [ "$(cat /sys/class/net/$eth/operstate 2>/dev/null)" == "up" ]; then
+        if [ "$(cat /sys/class/net/$os_eth/operstate 2>/dev/null)" == "up" ]; then
             count=0
         else
             if [ $count -lt $link_watch_timeout ]; then
@@ -73,65 +71,70 @@ start_lo() {
 
 start_wlan() {
     msg_begin "Configuring wireless network"
-    if ! ifconfig $wlan &>/dev/null; then
+    if ! ifconfig $os_wlan &>/dev/null; then
         msg_fail "no device"
         return 1
     fi
 
-    if [ "$(cat /sys/class/net/$wlan/carrier 2>/dev/null)" != "1" ]; then
+    if [ "$(cat /sys/class/net/$os_wlan/carrier 2>/dev/null)" != "1" ]; then
         msg_fail "no link"
         return 1
     fi
 
     if [ -n "$mtu" ]; then
-        ip link set mtu $mtu dev $wlan
+        ip link set mtu $mtu dev $os_wlan
     fi
 
     if [ -n "$static_ip" ]; then
         msg_done $static_ip
-        ifconfig $wlan $static_ip up
+        ifconfig $os_wlan $static_ip up
         static_ip="" # won't be used again
     else
         msg_done dhcp
-        dhclient -cf "$dh_conf" $wlan
+        dhclient -cf "$dh_conf" $os_wlan
     fi
 
-    if [ "$ip_watch" == "yes" ] && ip addr show dev $wlan | grep inet &>/dev/null; then
-        watch_ip $wlan &
+    if [ "$ip_watch" == "yes" ] && ip addr show dev $os_wlan | grep inet &>/dev/null; then
+        watch_ip $os_wlan &
     fi
 }
 
 start_eth() {
     msg_begin "Configuring wired network"
 
-    # wait up to 3 seconds for driver
+    # wait for driver
+    w=3
+    test "$link_watch" == "yes" || w=1
     count=0
-    while ! ifconfig $eth >/dev/null 2>&1; do
+    while ! ifconfig $os_eth >/dev/null 2>&1; do
         sleep 1
         count=$(($count + 1))
-        if [ $count -ge 3 ]; then
+        if [ $count -ge $w ]; then
             msg_done "no device"
             return 1
         fi
     done
 
     # bring it up
-    ifconfig $eth up
+    ifconfig $os_eth up
 
-    # wait up to 3 seconds for operstate
+    # wait for operstate
+    w=3
+    test "$link_watch" == "yes" || w=1
     count=0
-    while [ "$(cat /sys/class/net/$eth/operstate 2>&1)" == "unknown" ]; do
+    while [ "$(cat /sys/class/net/$os_eth/operstate 2>&1)" == "unknown" ]; do
         sleep 1
         count=$(($count + 1))
-        if [ $count -ge 3 ]; then
+        if [ $count -ge $w ]; then
             msg_done "no link"
             return 1
         fi
     done
 
-    # wait up to $link_nego_timeout seconds for link
+    # wait for link
+    test "$link_watch" == "yes" || link_nego_timeout=3
     count=0
-    while [ "$(cat /sys/class/net/$eth/carrier 2>&1)" != "1" ]; do
+    while [ "$(cat /sys/class/net/$os_eth/carrier 2>&1)" != "1" ]; do
         sleep 1
         count=$(($count + 1))
         if [ $count -ge $link_nego_timeout ]; then
@@ -141,24 +144,24 @@ start_eth() {
     done
     
     if [ -n "$mtu" ]; then
-        ip link set mtu $mtu dev $eth
+        ip link set mtu $mtu dev $os_eth
     fi
 
     if [ -n "$static_ip" ]; then
         msg_done $static_ip
-        ifconfig $eth $static_ip up
+        ifconfig $os_eth $static_ip up
         static_ip="" # won't be used again
     else
         msg_done dhcp
-        dhclient -cf "$dh_conf" $eth
+        dhclient -cf "$dh_conf" $os_eth
     fi
 
     if [ "$link_watch" == "yes" ]; then
         watch_eth &
     fi
 
-    if [ "$ip_watch" == "yes" ] && ip addr show dev $eth | grep inet &>/dev/null; then
-        watch_ip $eth &
+    if [ "$ip_watch" == "yes" ] && ip addr show dev $os_eth | grep inet &>/dev/null; then
+        watch_ip $os_eth &
     fi
 }
 
@@ -166,10 +169,11 @@ start() {
     hostname=$(hostname)
     echo "send host-name = \"$hostname\";" > /var/cache/dhclient.conf
 
-    ssid=$(cat /data/etc/wpa_supplicant.conf 2>&1 | grep ssid | grep -v scan_ssid | cut -d '"' -f 2)
-
     start_lo
 
+    test "$os_networkless" == "true" && return 0
+
+    ssid=$(cat /data/etc/wpa_supplicant.conf 2>&1 | grep ssid | grep -v scan_ssid | cut -d '"' -f 2)
     test -n "$ssid" && start_wlan && wlan_ok="ok"
     
     test -r /data/etc/ppp/modem && ppp_ok="ok" # TODO actually test the ppp link
@@ -182,8 +186,14 @@ start() {
     fi
     
     if [ "$eth_ok" != "ok" ] && [ "$wlan_ok" != "ok" ] && [ "$ppp_ok" != "ok" ]; then
-        logger -t ethernet -s "no network connection available"
-        test "$watch_link" == "yes" && return 1 || return 0
+        if [ "$link_watch" == "yes" ]; then
+            logger -t ethernet -s "no network connection available, rebooting"
+            reboot
+            return 1
+        else
+            logger -t ethernet -s "no network connection available"
+            return 0
+        fi
     fi
 
     if [ -n "$static_gw" ]; then
diff --git a/board/common/overlay/etc/init.d/S41netwatch b/board/common/overlay/etc/init.d/S41netwatch
index 925681a7822..940d5150837 100755
--- a/board/common/overlay/etc/init.d/S41netwatch
+++ b/board/common/overlay/etc/init.d/S41netwatch
@@ -10,6 +10,9 @@ test -f $watch_conf && source $watch_conf || exit 0
 test -z "$netwatch_host" || -z "$netwatch_port" && exit 0
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
+
+test "$os_networkless" == "true" && exit 0
 
 watch() {
     count=0
diff --git a/board/common/overlay/etc/init.d/S50date b/board/common/overlay/etc/init.d/S50date
index 10e90483c5b..d8231be6a28 100755
--- a/board/common/overlay/etc/init.d/S50date
+++ b/board/common/overlay/etc/init.d/S50date
@@ -27,7 +27,10 @@ fi
 test -f $conf || exit 0
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
 
+has_net_conn || exit 0
+    
 date_timeout=10
 date_method=http
 date_host="google.com"
diff --git a/board/common/overlay/etc/init.d/S60sshd b/board/common/overlay/etc/init.d/S60sshd
index bc48ccde0b7..f94b4639ce5 100755
--- a/board/common/overlay/etc/init.d/S60sshd
+++ b/board/common/overlay/etc/init.d/S60sshd
@@ -5,6 +5,9 @@ conf="/etc/sshd_config"
 test -f $conf || exit 0
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
+
+has_net_conn || exit 0
 
 start() {
     msg_begin "Starting sshd"
diff --git a/board/common/overlay/etc/init.d/S61proftpd b/board/common/overlay/etc/init.d/S61proftpd
index 550f05dcf84..ef358941b2c 100755
--- a/board/common/overlay/etc/init.d/S61proftpd
+++ b/board/common/overlay/etc/init.d/S61proftpd
@@ -3,6 +3,9 @@
 test -f /etc/proftpd.conf || exit 0
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
+
+has_net_conn || exit 0
 
 start() {
     msg_begin "Starting proftpd"
diff --git a/board/common/overlay/etc/init.d/S62smb b/board/common/overlay/etc/init.d/S62smb
index 379e34c2caf..dfd2ba03240 100755
--- a/board/common/overlay/etc/init.d/S62smb
+++ b/board/common/overlay/etc/init.d/S62smb
@@ -3,6 +3,9 @@
 test -f /etc/samba/smb.conf || exit 0
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
+
+has_net_conn || exit 0
 
 start() {
     msg_begin "Setting smb admin password"
diff --git a/board/common/overlay/etc/init.d/S99showinfo b/board/common/overlay/etc/init.d/S99showinfo
index 33642c072d8..1e0b7390d15 100755
--- a/board/common/overlay/etc/init.d/S99showinfo
+++ b/board/common/overlay/etc/init.d/S99showinfo
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 test -n "$os_version" || source /etc/init.d/base
+test -n "$os_debug" || source /etc/init.d/conf
 
 msg_info() {
     echo " # $1"
@@ -24,9 +25,9 @@ show_dns() {
 
 case "$1" in
     start)
-        show_iface_ip_addr eth0
-        show_iface_ip_addr wlan0
-        show_iface_ip_addr ppp0
+        show_iface_ip_addr $os_eth
+        show_iface_ip_addr $os_wlan
+        show_iface_ip_addr $os_ppp
         show_gateway
         show_dns
         ;;
diff --git a/board/common/overlay/etc/init.d/conf b/board/common/overlay/etc/init.d/conf
new file mode 100644
index 00000000000..fd1afc129c3
--- /dev/null
+++ b/board/common/overlay/etc/init.d/conf
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+_sys_conf="/etc/os.conf"
+_boot_conf="/boot/os.conf"
+_conf="/data/etc/os.conf"
+
+if ! [ -f $_conf ]; then
+    if [ -f $_boot_conf ]; then
+        cp $_boot_conf $_conf
+    elif [ -f $_sys_conf ]; then
+        cp $_sys_conf $_conf
+    fi
+fi
+
+source $_conf
+
+has_net_conn() {
+    test "$os_networkless" == "true" && return 1
+
+    addr_eth=$(ip addr show dev $os_eth 2>/dev/null | grep inet | tr -s ' ' | sed -r 's/^\s+//' | cut -d ' ' -f 2)
+    addr_wlan=$(ip addr show dev $os_wlan 2>/dev/null | grep inet | tr -s ' ' | sed -r 's/^\s+//' | cut -d ' ' -f 2)
+
+    if [ -n "$addr_eth" ] || [ -n "$addr_wlan" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
diff --git a/board/common/overlay/etc/os.conf b/board/common/overlay/etc/os.conf
index 2cc5d3e21b5..b4e03dce30a 100644
--- a/board/common/overlay/etc/os.conf
+++ b/board/common/overlay/etc/os.conf
@@ -1,4 +1,8 @@
 os_debug="false"
 os_prereleases="false"
 os_tty_login="tty1"
+os_eth="eth0"
+os_wlan="wlan0"
+os_ppp="ppp0"
+os_networkless="false"
 
diff --git a/board/common/overlay/usr/share/post-upgrade/20160828.sh b/board/common/overlay/usr/share/post-upgrade/20160828.sh
new file mode 100755
index 00000000000..d140a1a55d9
--- /dev/null
+++ b/board/common/overlay/usr/share/post-upgrade/20160828.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+# more settings have been added to [/data]/etc/os.conf
+
+echo 'os_networkless="false"' >> /data/etc/os.conf
+echo 'os_eth="eth0"' >> /data/etc/os.conf
+echo 'os_wlan="wlan0"' >> /data/etc/os.conf
+echo 'os_ppp="ppp0"' >> /data/etc/os.conf
+