allow zeroconf to be disabled.

doc/mpd.conf.5

@@ -71,6 +71,9 @@ reports from what address a connection is opened, and when it is closed, and
 "verbose" records excessive amounts of information for debugging purposes.  The
 default is "default".
 .TP
+.B zeroconf_enabled <yes or no>
+Specifies if zeroconf should be enabled or not.
+.TP
 .B zeroconf_name <name>
 If Zerconf is compiled into MPD, this is the service name to publish.  This
 should be unique to your local network, but name collisions will be properly

doc/mpdconf.example

@@ -45,6 +45,10 @@ error_file                      "~/.mpd/mpd.error"
 #
 #log_level                       "default"
 #
+# If Zeroconf support should be enabled.
+#
+#zeroconf_enabled                "yes"
+#
 # If Zeroconf is configured, the service name to publish.  This
 # should be unique on your local network, but name collisions
 # will be taken care of for you.

src/conf.c

@@ -145,6 +145,7 @@ void initConf(void)
 	registerConfigParam(CONF_PORT,                          0,     0);
 	registerConfigParam(CONF_LOG_LEVEL,                     0,     0);
 	registerConfigParam(CONF_ZEROCONF_NAME,                 0,     0);
+	registerConfigParam(CONF_ZEROCONF_ENABLED,              0,     0);
 	registerConfigParam(CONF_PASSWORD,                      1,     0);
 	registerConfigParam(CONF_DEFAULT_PERMS,                 0,     0);
 	registerConfigParam(CONF_AUDIO_OUTPUT,                  1,     1);

src/conf.h

@@ -33,6 +33,7 @@
 #define CONF_PORT                       "port"
 #define CONF_LOG_LEVEL                  "log_level"
 #define CONF_ZEROCONF_NAME              "zeroconf_name"
+#define CONF_ZEROCONF_ENABLED			"zeroconf_enabled"
 #define CONF_PASSWORD                   "password"
 #define CONF_DEFAULT_PERMS              "default_permissions"
 #define CONF_AUDIO_OUTPUT               "audio_output"

src/zeroconf.c

@@ -549,6 +549,10 @@ void initZeroconf(void)
 {
 	const char* serviceName = SERVICE_NAME;
 	ConfigParam *param;
+	int enabled = getBoolConfigParam(CONF_ZEROCONF_ENABLED);
+
+	if (enabled != -1 && enabled != 1)
+		return;
 
 	param = getConfigParam(CONF_ZEROCONF_NAME);
 
@@ -566,6 +570,11 @@ void initZeroconf(void)
 
 void finishZeroconf(void)
 {
+	int enabled = getBoolConfigParam(CONF_ZEROCONF_ENABLED);
+
+	if (enabled != -1 && enabled != 1)
+		return;
+
 #ifdef HAVE_AVAHI
 	DEBUG( "Avahi: Shutting down interface\n" );
 	deregisterIO( &zeroConfIo );