From 3fd727566a1cebb3acfb1888e142fe79c4e6e54f Mon Sep 17 00:00:00 2001
From: Ruslan Ermilov <ru@nginx.com>
Date: Fri, 13 Dec 2013 20:49:52 +0400
Subject: [PATCH] Resolver: lookups are case-insensitive.

---
 src/core/ngx_resolver.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/core/ngx_resolver.c b/src/core/ngx_resolver.c
index 57081034c..a446f98b6 100644
--- a/src/core/ngx_resolver.c
+++ b/src/core/ngx_resolver.c
@@ -467,6 +467,8 @@ ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx)
     ngx_resolver_ctx_t   *next;
     ngx_resolver_node_t  *rn;
 
+    ngx_strlow(ctx->name.data, ctx->name.data, ctx->name.len);
+
     hash = ngx_crc32_short(ctx->name.data, ctx->name.len);
 
     rn = ngx_resolver_lookup_name(r, &ctx->name, hash);
@@ -2011,7 +2013,7 @@ ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n,
         i += len;
     }
 
-    if (ngx_strcmp(&buf[i], "\7in-addr\4arpa") == 0) {
+    if (ngx_strcasecmp(&buf[i], (u_char *) "\7in-addr\4arpa") == 0) {
         i += sizeof("\7in-addr\4arpa");
 
         /* lock addr mutex */
@@ -2058,7 +2060,7 @@ invalid_in_addr_arpa:
         addr6.s6_addr[octet] += (u_char) (digit * 16);
     }
 
-    if (ngx_strcmp(&buf[i], "\3ip6\4arpa") == 0) {
+    if (ngx_strcasecmp(&buf[i], (u_char *) "\3ip6\4arpa") == 0) {
         i += sizeof("\3ip6\4arpa");
 
         /* lock addr mutex */
@@ -2737,7 +2739,7 @@ done:
             n = *src++;
 
         } else {
-            ngx_memcpy(dst, src, n);
+            ngx_strlow(dst, src, n);
             dst += n;
             src += n;