dovecot-2.2: lib-storage: Allow MAIL_ATTRIBUTE_INTERNAL_RANK_DEF...

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.2/rev/04ed3c9c330f
changeset: 19104:04ed3c9c330f
user:      Timo Sirainen <tss at iki.fi>
date:      Mon Sep 07 16:23:40 2015 +0300
description:
lib-storage: Allow MAIL_ATTRIBUTE_INTERNAL_RANK_DEFAULT to use get=NULL
This is useful for registering internal attributes whose only purpose is to
be able to set/get them via dict. (Because normally the dict access would be
denied completely.)

diffstat:

 src/lib-storage/mailbox-attribute.c |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (18 lines):

diff -r 5d3c7d882bfb -r 04ed3c9c330f src/lib-storage/mailbox-attribute.c
--- a/src/lib-storage/mailbox-attribute.c	Mon Sep 07 16:22:11 2015 +0300
+++ b/src/lib-storage/mailbox-attribute.c	Mon Sep 07 16:23:40 2015 +0300
@@ -282,8 +282,12 @@
 	if (iattr != NULL) {
 		switch (iattr->rank) {
 		case MAIL_ATTRIBUTE_INTERNAL_RANK_DEFAULT:		
-			if ((ret = iattr->get(t, key, value_r)) < 0)
-				return ret;
+			if (iattr->get == NULL)
+				ret = 0;
+			else {
+				if ((ret = iattr->get(t, key, value_r)) < 0)
+					return ret;
+			}
 			if (ret > 0) {
 				value_r->flags |= MAIL_ATTRIBUTE_VALUE_FLAG_READONLY;
 				return 1;