From: Alan T. DeKok <aland@freeradius.org>
Date: Fri, 27 Oct 2023 22:28:47 +0000 (-0400)
Subject: add "find last by da" API
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=51e58f62139ba5da5f70df82c1b735f9f6ec2406;p=thirdparty%2Ffreeradius-server.git

add "find last by da" API
---

diff --git a/src/lib/util/pair.c b/src/lib/util/pair.c
index fa723e295c1..1b2a54462a3 100644
--- a/src/lib/util/pair.c
+++ b/src/lib/util/pair.c
@@ -699,6 +699,30 @@ fr_pair_t *fr_pair_find_by_da(fr_pair_list_t const *list, fr_pair_t const *prev,
 	return NULL;
 }
 
+/** Find the last pair with a matching da
+ *
+ * @param[in] list	to search in.
+ * @param[in] prev	the previous attribute in the list.
+ * @param[in] da	the previous da to find.
+ * @return
+ *	- first matching fr_pair_t.
+ *	- NULL if no fr_pair_ts match.
+ *
+ * @hidecallergraph
+ */
+fr_pair_t *fr_pair_find_last_by_da(fr_pair_list_t const *list, fr_pair_t const *prev, fr_dict_attr_t const *da)
+{
+	fr_pair_t *vp = UNCONST(fr_pair_t *, prev);
+
+	if (fr_pair_list_empty(list)) return NULL;
+
+	PAIR_LIST_VERIFY(list);
+
+	while ((vp = fr_pair_list_prev(list, vp))) if (da == vp->da) return vp;
+
+	return NULL;
+}
+
 /** Find a pair with a matching da at a given index
  *
  * @param[in] list	to search in.
diff --git a/src/lib/util/pair.h b/src/lib/util/pair.h
index 1d91edc4879..5e7fc7b66c3 100644
--- a/src/lib/util/pair.h
+++ b/src/lib/util/pair.h
@@ -483,6 +483,9 @@ fr_pair_t	*fr_pair_find_by_da_idx(fr_pair_list_t const *list,
 fr_pair_t	*fr_pair_find_by_da_nested(fr_pair_list_t const *list, fr_pair_t const *prev,
 					   fr_dict_attr_t const *da) CC_HINT(nonnull(1,3));
 
+fr_pair_t	*fr_pair_find_last_by_da(fr_pair_list_t const *list,
+					 fr_pair_t const *prev, fr_dict_attr_t const *da) CC_HINT(nonnull(1,3));
+
 fr_pair_t	*fr_pair_find_by_child_num(fr_pair_list_t const *list, fr_pair_t const *prev,
 					   fr_dict_attr_t const *parent, unsigned int attr) CC_HINT(nonnull(1,3));