New configuration option "NoZeroConf" to disable ZeroConf registration

If ngIRCd is compiled to register its services using ZeroConf (e.g. using
Howl, Avahi or on Mac OS X) this parameter can be used to disable service
registration at runtime.

ChangeLog

@@ -12,6 +12,9 @@
 
 ngIRCd Release 17
 
+  - New configuration option "NoZeroConf" to disable service registration at
+    runtime even if ngIRCd is compiled with support for ZeroConf (e.g. using
+    Howl, Avahi or on Mac OS X).
   - New configuration option "SyslogFacility" to define the syslog "facility"
     (the "target"), to which ngIRCd should send its log messages.
     Possible values are system dependant, but most probably "auth", "daemon",

NEWS

@@ -12,6 +12,9 @@
 
 ngIRCd Release 17
 
+  - New configuration option "NoZeroConf" to disable service registration at
+    runtime even if ngIRCd is compiled with support for ZeroConf (e.g. using
+    Howl, Avahi or on Mac OS X).
   - New configuration option "SyslogFacility" to define the syslog "facility"
     (the "target"), to which ngIRCd should send its log messages.
     Possible values are system dependant, but most probably "auth", "daemon",

doc/sample-ngircd.conf

@@ -144,6 +144,10 @@
 	# Don't use PAM, even if ngIRCd has been compiled with support for it.
 	;NoPAM = no
 
+	# Don't use ZeroConf service registration, even if ngIRCd has been
+	# compiled with support for it (e.g. Howl, Avahi, Mac OS X).
+	;NoZeroConf = no
+
 	# try to connect to other irc servers using ipv4 and ipv6, if possible
 	;ConnectIPv6 = yes
 	;ConnectIPv4 = yes

man/ngircd.conf.5.tmpl

@@ -222,6 +222,12 @@ to the PAM library at runtime; all users connecting without password are
 allowed to connect, all passwords given will fail.
 Default: no.
 .TP
+\fBNoZeroConf\fR
+If ngIRCd is compiled to register its services using ZeroConf (e.g. using
+Howl, Avahi or on Mac OS X) this parameter can be used to disable service
+registration at runtime.
+Default: no.
+.TP
 \fBConnectIPv4\fR
 Set this to no if you do not want ngIRCd to connect to other IRC servers using
 IPv4. This allows usage of ngIRCd in IPv6-only setups.

src/ngircd/conf.c

@@ -338,6 +338,7 @@ Conf_Test( void )
 	printf("  NoDNS = %s\n", yesno_to_str(Conf_NoDNS));
 	printf("  NoIdent = %s\n", yesno_to_str(Conf_NoIdent));
 	printf("  NoPAM = %s\n", yesno_to_str(Conf_NoPAM));
+	printf("  NoZeroConf = %s\n", yesno_to_str(Conf_NoZeroConf));
 
 #ifdef WANT_IPV6
 	printf("  ConnectIPv4 = %s\n", yesno_to_str(Conf_ConnectIPv6));
@@ -587,6 +588,7 @@ Set_Defaults(bool InitServers)
 	Conf_NoDNS = false;
 	Conf_NoIdent = false;
 	Conf_NoPAM = false;
+	Conf_NoZeroConf = false;
 
 	Conf_Oper_Count = 0;
 	Conf_Channel_Count = 0;
@@ -1048,6 +1050,11 @@ Handle_GLOBAL( int Line, char *Var, char *Arg )
 		Conf_NoPAM = Check_ArgIsTrue(Arg);
 		return;
 	}
+	if(strcasecmp(Var, "NoZeroConf") == 0) {
+		/* don't register services using ZeroConf */
+		Conf_NoZeroConf = Check_ArgIsTrue(Arg);
+		return;
+	}
 #ifdef WANT_IPV6
 	/* the default setting for all the WANT_IPV6 special options is 'true' */
 	if( strcasecmp( Var, "ConnectIPv6" ) == 0 ) {

src/ngircd/conf.h

@@ -152,6 +152,9 @@ GLOBAL bool Conf_NoIdent;
 /* Disable all usage of PAM, even when compiled with support for it */
 GLOBAL bool Conf_NoPAM;
 
+/* Disable service registration using "ZeroConf" */
+GLOBAL bool Conf_NoZeroConf;
+
 /*
  * try to connect to remote systems using the ipv6 protocol,
  * if they have an ipv6 address? (default yes)

src/ngircd/rendezvous.c

@@ -144,12 +144,16 @@ GLOBAL void Rendezvous_Exit( void )
 } /* Rendezvous_Exit */
 
 
+/**
+ * Register ZeroConf service
+ */
 GLOBAL bool Rendezvous_Register( char *Name, char *Type, UINT16 Port )
 {
-	/* Register new service */
-
 	int i;
 
+	if (Conf_NoZeroConf)
+		return;
+
 	/* Search free port structure */
 	for( i = 0; i < MAX_RENDEZVOUS; i++ ) if( ! My_Rendezvous[i].Desc[0] ) break;
 	if( i >= MAX_RENDEZVOUS )