checkmpd: add socket support

checkmpd

 #!/bin/bash
 ROOT_DIRECTORY=/home/icecastradio/radio_mpd/
 URL=http://radio.azbyka.ru/json.xsl
+cd $ROOT_DIRECTORY || exit
 STREAMS=`ls -l $ROOT_DIRECTORY | grep "^d" | awk '{print $9}'`
 CONTENT=$(curl $URL 2>/dev/null)
 ACTIVE_STREAMS=`grep -oP '(?<=/).*?(?=")' <<< $CONTENT`
@@ -25,25 +26,35 @@ OFFLINE_STREAMS=()
 # 2) Compare "$ACTIVE_STREAMS" and variable "STREAMS".
 # If "$ELEM" not in "$ACTIVE_STREAMS" , add "$ELEM" in $OFFLINE_STREAMS.
 
+elem_control()
+{
+    local bind
+    bind=`cat $ROOT_DIRECTORY/$1.mpd.conf | grep "^bind_to_address" | awk '{ print $2 ; exit; }'  | tr -d \"`
+    [ -e "$bind" ] && echo "--host $bind" && return
+
+    bind=`cat $ROOT_DIRECTORY/$1.mpd.conf | grep "^port" | awk '{ print $2 ; exit; }'  | tr -d \"`
+    echo "-p $bind"
+}
+
 echo "MPD Status:"
 for ELEM in $STREAMS; do
     # Решаем  ситуацию , когда поток просто на паузе.
-    ELEM_PORT=`cat $ROOT_DIRECTORY/$ELEM.mpd.conf | grep port | awk '{ print $2 ; exit; }'  | tr -d \"`
-    ELEM_STATUS=`mpc -p $ELEM_PORT | awk '{print $1}' | sed -n 2p`
+    ELEM_CONTROL="$(elem_control $ELEM)"
+    ELEM_STATUS=$(mpc $ELEM_CONTROL | awk '{print $1}' | sed -n 2p)
     
     if [[ "$ELEM_STATUS" =~ "[paused]" ]]; then
     	echo "$ELEM was paused. Started playing again"
-        mpc -p $ELEM_PORT play
+        mpc $ELEM_CONTROL play
     elif [[ "$ELEM_STATUS" = "" ]]; then
     	echo "$ELEM is empty. Started playing again"
-        mpc -p $ELEM_PORT play
+        mpc $ELEM_CONTROL play
     else
         echo -e "$ELEM\tStatus: '$ELEM_STATUS'"
     fi 
     
-    if [[ $ELEM_STATUS =~ "error" ]]; then
+    if [[ $ELEM_STATUS =~ "ERROR:" ]]; then
         echo "$ELEM was paused with error. See logs in /home/icecastradio/radio_mpd/$ELEM/mpd.log"
-        mpc -p $ELEM_PORT play
+        mpc $ELEM_CONTROL play
     fi
     
     if [[ ! $ACTIVE_STREAMS =~ $ELEM ]]; then
@@ -55,9 +66,9 @@ done
 # Ниже ситуация с отмонтированным потоком:
 echo -e "\nRestarting unmounted MPD-STREAMS:"
 for ELEM in ${OFFLINE_STREAMS[@]}; do
-    ELEM_PORT=`cat $ROOT_DIRECTORY/$ELEM.mpd.conf | grep port | awk '{ print $2 ; exit; }'  | tr -d \"`
+    ELEM_CONTROL="$(elem_control $ELEM)"
     # Стартуем поток
-    mpc -p $ELEM_PORT play
+    mpc $ELEM_CONTROL play
     echo $ELEM
 done