From 893890ae2b0e04b68362e1b3976bc1c263d2115a Mon Sep 17 00:00:00 2001
From: Moritz Warning <moritzwarning@web.de>
Date: Tue, 1 Nov 2016 02:13:49 +0100
Subject: [PATCH] nodogsplash: wait for interface to appear

---
 nodogsplash/Makefile               |  2 +-
 nodogsplash/files/nodogsplash.init | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/nodogsplash/Makefile b/nodogsplash/Makefile
index 2b8efd2..971fbac 100644
--- a/nodogsplash/Makefile
+++ b/nodogsplash/Makefile
@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=nodogsplash
 PKG_FIXUP:=autoreconf
 PKG_VERSION:=1.0.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)/
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
diff --git a/nodogsplash/files/nodogsplash.init b/nodogsplash/files/nodogsplash.init
index f3df6a1..85bcfcc 100755
--- a/nodogsplash/files/nodogsplash.init
+++ b/nodogsplash/files/nodogsplash.init
@@ -119,6 +119,22 @@ setup_firewall() {
   done
 }
 
+wait_for_interface()
+{
+  local ifname="$1"
+  local timeout=10
+  for i in $(seq $timeout); do
+    if [ $(ip -4 addr show dev $ifname 2> /dev/null | grep -c inet) -ne 0 ]; then
+      break
+    fi
+    sleep 1
+    if [ $i == $timeout ] ; then
+      nolog error "$ifname not detected, NoDogSplash not starting."
+      exit 1
+    fi
+  done
+}
+
 generate_uci_config() {
   local cfg="$1"
   local val
@@ -161,6 +177,8 @@ generate_uci_config() {
       return 1
   fi
 
+  wait_for_interface "$ifname"
+
   echo "GatewayInterface $ifname" >> $CONFIGFILE
 
   append_config_option "$CONFIGFILE" "$cfg" gatewayname
-- 
2.30.2