auth: Added passdb/userdb { auth_verbose } setting.

If this is explicitly set to yes or no, it overrides the global auth_verbose
setting. However, auth_debug=yes overrides all of the auth_verbose settings.

src/auth/auth-request.c

@@ -2185,8 +2185,25 @@ void auth_request_log_info(struct auth_request *auth_request,
 {
 	va_list va;
 
-	if (!auth_request->set->verbose)
-		return;
+	if (auth_request->set->debug) {
+		/* auth_debug=yes overrides auth_verbose settings */
+	} else {
+		const char *db_auth_verbose = auth_request->userdb_lookup ?
+			auth_request->userdb->set->auth_verbose :
+			auth_request->passdb->set->auth_verbose;
+		switch (db_auth_verbose[0]) {
+		case 'y':
+			break;
+		case 'n':
+			return;
+		case 'd':
+			if (!auth_request->set->verbose)
+				return;
+			break;
+		default:
+			i_unreached();
+		}
+	}
 
 	va_start(va, format);
 	T_BEGIN {

src/auth/auth-settings.c

@@ -121,6 +121,7 @@ static const struct setting_define auth_passdb_setting_defines[] = {
 	DEF(SET_BOOL, deny),
 	DEF(SET_BOOL, pass),
 	DEF(SET_BOOL, master),
+	DEF(SET_ENUM, auth_verbose),
 
 	SETTING_DEFINE_LIST_END
 };
@@ -139,7 +140,8 @@ static const struct auth_passdb_settings auth_passdb_default_settings = {
 
 	.deny = FALSE,
 	.pass = FALSE,
-	.master = FALSE
+	.master = FALSE,
+	.auth_verbose = "default:yes:no"
 };
 
 const struct setting_parser_info auth_passdb_setting_parser_info = {
@@ -171,6 +173,8 @@ static const struct setting_define auth_userdb_setting_defines[] = {
 	DEF(SET_ENUM, result_failure),
 	DEF(SET_ENUM, result_internalfail),
 
+	DEF(SET_ENUM, auth_verbose),
+
 	SETTING_DEFINE_LIST_END
 };
 
@@ -185,7 +189,9 @@ static const struct auth_userdb_settings auth_userdb_default_settings = {
 	.skip = "never:found:notfound",
 	.result_success = "return-ok:return:return-fail:continue:continue-ok:continue-fail",
 	.result_failure = "continue:return:return-ok:return-fail:continue-ok:continue-fail",
-	.result_internalfail = "continue:return:return-ok:return-fail:continue-ok:continue-fail"
+	.result_internalfail = "continue:return:return-ok:return-fail:continue-ok:continue-fail",
+
+	.auth_verbose = "default:yes:no"
 };
 
 const struct setting_parser_info auth_userdb_setting_parser_info = {

src/auth/auth-settings.h

@@ -18,6 +18,7 @@ struct auth_passdb_settings {
 	bool deny;
 	bool pass; /* deprecated, use result_success=continue instead */
 	bool master;
+	const char *auth_verbose;
 };
 
 struct auth_userdb_settings {
@@ -31,6 +32,7 @@ struct auth_userdb_settings {
 	const char *result_success;
 	const char *result_failure;
 	const char *result_internalfail;
+	const char *auth_verbose;
 };
 
 struct auth_settings {