Move blacklist hits to snomask +b (new) rather than notifying all ircops.

This snomask is set by default but this can be overridden via
set::snomask-on-oper or oper::snomask. Suggested by hayek (#4566).

doc/conf/help/help.conf

@@ -123,6 +123,7 @@ help Snomasks {
 	"-";
 	" Below is a list of possible snomasks:";
 	" ==-------------------------oOo-----------------------==";
+	" b = View blacklist hits";
 	" c = View connects/disconnects on local server";
 	" e = View 'Eyes' server messages (OperOverride, /CHG* and /SET* usage, ..)";
 	" f = View flood alerts";

include/struct.h

@@ -322,7 +322,7 @@ typedef OperPermission (*OperClassEntryEvalCallback)(OperClassACLEntryVar* varia
  * -DuffJ
  */
 
-#define SNO_DEFOPER "+kscfvGqo"
+#define SNO_DEFOPER "+kscfvGqob"
 #define SNO_DEFUSER "+ks"
 
 #define SEND_UMODES (SendUmodes)

src/modules/blacklist.c

@@ -20,6 +20,15 @@
 #include "unrealircd.h"
 #include "res.h"
 
+ModuleHeader MOD_HEADER(blacklist)
+= {
+	"blacklist",
+	"4.0",
+	"Check connecting users against DNS Blacklists",
+	"3.2-b8-1",
+	NULL
+};
+
 /* In this module and the config syntax I tried to 'abstract' things
  * a little, so things could later be extended if we ever want
  * to introduce another blacklist type (other than DNSBL).
@@ -70,16 +79,6 @@ struct _bluser {
 	int refcnt;
 };
 
-/* Module header */
-ModuleHeader MOD_HEADER(blacklist)
-= {
-	"blacklist",
-	"4.0",
-	"Check connecting users against DNS Blacklists",
-	"3.2-b8-1",
-	NULL 
-};
-
 /* Global variables */
 ModDataInfo *blacklist_md = NULL;
 Blacklist *conf_blacklist = NULL;
@@ -101,6 +100,8 @@ void blacklist_free_bluser_if_able(BLUser *bl);
 #define SetBLUser(x, y)	do { moddata_client(x, blacklist_md).ptr = y; } while(0)
 #define BLUSER(x)	((BLUser *)moddata_client(x, blacklist_md).ptr)
 
+long SNO_BLACKLIST = 0L;
+
 MOD_TEST(blacklist)
 {
 	HookAdd(modinfo->handle, HOOKTYPE_CONFIGTEST, 0, blacklist_config_test);
@@ -132,6 +133,8 @@ MOD_INIT(blacklist)
 	HookAdd(modinfo->handle, HOOKTYPE_UNKUSER_QUIT, 0, blacklist_quit);
 	HookAdd(modinfo->handle, HOOKTYPE_REHASH, 0, blacklist_rehash);
 
+	SnomaskAdd(modinfo->handle, 'b', 1, umode_allow_opers, &SNO_BLACKLIST);
+
 	return MOD_SUCCESS;
 }
 
@@ -635,7 +638,7 @@ void blacklist_hit(aClient *acptr, Blacklist *bl, int reply)
 		snprintf(buf, sizeof(buf), "[Blacklist] IP %s matches blacklist %s (%s/reply=%d)",
 			GetIP(acptr), bl->name, bl->backend->dns->name, reply);
 	
-	sendto_realops("%s", buf);
+	sendto_snomask(SNO_BLACKLIST, "%s", buf);
 	ircd_log(LOG_KILL, "%s", buf);
 
 	name[0] = "ip";