[package] base-files: save the connect time of interfaces in uci state
[openwrt.git] / package / base-files / files / etc / hotplug.d / iface / 40-rdate
index cf56c02..c5abaf0 100644 (file)
@@ -1,46 +1,63 @@
-uci_get_one()
+IFACE_GLOBAL=$(uci_get "system.@rdate[0].interface")
+SERVERS=
+MAX=0
+SYNCED=
+
+do_rdate()
 {
-       for var in "$@"; do
-               uci -P /var/state get "$var" 2>/dev/null && break
-       done
+       local server="$1"
+
+       rdate -s "$server" >/dev/null 2>/dev/null && {
+               logger -t rdate "Synced with $server"
+               SYNCED="$server"
+       } || {
+               logger -t rdate "Failed to sync with $server"
+       }
 }
 
-rand()
+add_server()
 {
-       random=$(awk 'BEGIN { srand(); print int(rand() * 10 + 1); }')
+       local section="$1"
+
+       local server
+       config_get server "$section" hostname
+       [ -z "$server" ] && return
+
+       local iface
+       config_get iface "$section" interface
+       [ -z "$iface" ] && iface=$IFACE_GLOBAL
+       [ -n "$iface" ] && {
+               [ "$iface" = "$INTERFACE" ] || return
+       }
+
+       SERVERS="${SERVERS} $server"; : $((MAX++))
 }
 
-sync_rdate()
+sync_time()
 {
-       local servers=$(uci_get_one "network.$INTERFACE.lease_timesrv" \
-               "system.@rdate[0].server")
-
-       if [ -n "$servers" ]; then
-               match=0
-               tries=3
-               rand
-
-               while [ $match = 0 ] && [ $tries != 0 ]; do
-                       for server in $servers; do
-                               if [ $((--random)) = 0 ]; then
-                                       rdate -s $server >/dev/null 2>/dev/null && {
-                                               logger -t rdate "Synced with $server"
-                                               match=1
-                                       } || {
-                                               logger -t rdate "Failed to sync with $server"
-                                               let tries="$tries - 1"
-                                               rand
-                                       }
-
-                                       break
-                               fi
-                       done
+       local server
+       server=$(uci_get_state "network.$INTERFACE.lease_timesrv")
+       [ -n "$server" ] && do_rdate "$server"
+       [ -n "$SYNCED" ] && return
+
+       config_load timeserver
+       config_foreach add_server timeserver
+
+       local servers
+       while [ $MAX -gt 0 ] && [ -z "$SYNCED" ]; do
+               unset servers; random=$(awk "BEGIN { srand(); print int(rand() * $MAX + 1); }")
+               for server in $SERVERS; do
+                       [ $((--random)) -eq 0 ] && { do_rdate "$server"; continue; }
+                       servers="${servers} $server"
                done
-       else
-               logger -t rdate "No usable time server found"
-       fi
+               SERVERS="${servers}"; : $((MAX--))
+       done
+
+       [ -z "$SYNCED" ] && logger -t rdate "No usable time server for $INTERFACE found"
 }
 
-case "$ACTION" in
-       ifup) route -n | grep -q ^0.0.0.0 && sync_rdate;;
+case "${ACTION:-ifup}" in
+       ifup)
+               sync_time
+       ;;
 esac
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