From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 18 Oct 2023 12:44:45 +0000 (+0200)
Subject: cache: make record/hostname lookup case-insensitive
X-Git-Url: http://git.openwrt.org/?a=commitdiff_plain;h=479c7f8676d9cb6543ef516dc82cc53ed11b1142;p=project%2Fmdnsd.git

cache: make record/hostname lookup case-insensitive

Fixes lookup issues on hosts that announce themselves with uppercase
in their hostname

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/cache.c b/cache.c
index 046e8b9..8c851a3 100644
--- a/cache.c
+++ b/cache.c
@@ -42,7 +42,13 @@
 
 static struct uloop_timeout cache_gc;
 struct avl_tree services;
-AVL_TREE(records, avl_strcmp, true, NULL);
+
+static int avl_strcasecmp(const void *k1, const void *k2, void *ptr)
+{
+	return strcasecmp(k1, k2);
+}
+
+AVL_TREE(records, avl_strcasecmp, true, NULL);
 
 static void
 cache_record_free(struct cache_record *r)
@@ -111,7 +117,7 @@ cache_gc_timer(struct uloop_timeout *timeout)
 int
 cache_init(void)
 {
-	avl_init(&services, avl_strcmp, true, NULL);
+	avl_init(&services, avl_strcasecmp, true, NULL);
 
 	cache_gc.cb = cache_gc_timer;
 	uloop_timeout_set(&cache_gc, 10000);