From 3b3ad99602dbb7e03186c33c045774147b06da8b Mon Sep 17 00:00:00 2001
From: makefu <github@syntax-fehler.de>
Date: Wed, 29 May 2013 20:36:46 +0200
Subject: add timeout for wpa_supplicant

---
 usr/lib/autowifi/lib/wps | 50 ++++++++++++++++++++++++++++++++----------------
 1 file changed, 33 insertions(+), 17 deletions(-)

(limited to 'usr/lib/autowifi')

diff --git a/usr/lib/autowifi/lib/wps b/usr/lib/autowifi/lib/wps
index 8afd5b05..668bbbff 100644
--- a/usr/lib/autowifi/lib/wps
+++ b/usr/lib/autowifi/lib/wps
@@ -17,47 +17,63 @@ try_wps_pin(){
     WPA_LOG=/tmp/wpa.log
     rm $WPA_LOG
     #mkfifo $WPA_LOG
-    killall wpa_supplicant && sleep 1
+    killall wpa_supplicant 2>/dev/null && sleep 1
 	
     cat > $WPA_CONF <<EOF 
 ctrl_interface=/var/run/wpa_supplicant
 ctrl_interface_group=0
 update_config=1
 EOF
-    wpa_supplicant -Dwext -iwlan0 -c $WPA_CONF -f $WPA_LOG &
+    wpa_supplicant -Dwext -iwlan0 -c $WPA_CONF -f $WPA_LOG 2>&1 &
+    WPA_PID=$!
     sleep 2
     if !(sudo wpa_cli wps_reg $MAC $PIN  | grep -q OK) ;then
         echo "wpa_cli wps_reg failed, bailing out!"
         return 1
     fi
 
-    WPA_PID=$!
-	    #*"WPA: Key negotiation completed"*)
             # association failed
             #    exit 1 ;;
+    # TODO probably not posix compatible...
+    timeout(){
+      ( timeout=10;
+        while [ $timeout -gt 0 ]; do 
+            sleep 1;
+            kill -0 $$ 2> /dev/null || exit 0; 
+            : $((timeout--));
+        done ;
+        echo "TIMEOUT REACHED" ; 
+        kill $$)&
+       exec $@
+    }
 
-    if ( tail -f $WPA_LOG & echo "TAILPID: $!" )| while read line ; do
+    if (  timeout tail -f $WPA_LOG & echo "TAILPID: $!") | while read line ; do
         bye(){
+            printf "%s:" "$2" >&2
+            kill $WPA_PID
             kill -HUP $TAILPID
             exit $1
         }
-        echo $line
+        # DEBUG
+        #echo $line >&2
         case "$line" in
             TAILPID:*)IFS=" " set -- $line; TAILPID=$2;;
-            *"WPS-FAIL msg=10 config_error=18"*) bye 1 ;; # wrong pin
-            *"CTRL-EVENT-EAP-FAILURE EAP authentication failed"*) bye 1;; # rate limiting
-            *CTRL-EVENT-DISCONNECTED*):;;
-            *CTRL-EVENT-CONNECTED*) bye 0;; #yay connected
-
+            *"WPS-FAIL msg=10 config_error=18"*) bye 1 "wrong pin";; 
+            *"CTRL-EVENT-EAP-FAILURE EAP authentication failed"*) bye 1 "rate limiting";; 
+            #*"Association request to the driver failed") bye 1 "wps not available";;       
+            #*CTRL-EVENT-DISCONNECTED*):;;
+            *"CTRL-EVENT-DISCONNECTED bssid="*"reason=3 locally_generated=1"*)bye 1 "authentication failed, wps deactivated?";;
+            "TIMEOUT REACHED")bye 1 "timeout reached";;
+            *CTRL-EVENT-TERMINATING*) bye 1 "wpa_supplicant died";;
+            *CTRL-EVENT-CONNECTED*) bye 0 "yay connected";; 
         esac
     done ; then
-	#echo "Connected!"
-	sed -n 's/[ \t]*psk="\(.*\)"$/\1/p' $WPA_CONF
-	return 0
+        #echo "Connected!"
+        sed -n 's/[ \t]*psk="\(.*\)"$/\1/p' "$WPA_CONF"
+        return 0
     else
-	echo "failed!"
-	return 1
+        #echo "failed!"
+        return 1
     fi
-    kill $WPA_PID
 
 }
-- 
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