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changeset 4267:768212ca0745

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Fixed compression pointer processing in DNS response greater than 255 bytes. Thanks to Ben Hawkes.
author Igor Sysoev <igor@sysoev.ru>
date Wed, 09 Nov 2011 13:54:07 +0000
parents 4c45306936bb
children 25ddf6afc0ff
files src/core/ngx_resolver.c
diffstat 1 files changed, 7 insertions(+), 7 deletions(-) [+]
line wrap: on
line diff
--- a/src/core/ngx_resolver.c
+++ b/src/core/ngx_resolver.c
@@ -1952,7 +1952,13 @@ done:
     n = *src++;
 
     for ( ;; ) {
-        if (n != 0xc0) {
+        if (n & 0xc0) {
+            n = ((n & 0x3f) << 8) + *src;
+            src = &buf[n];
+
+            n = *src++;
+
+        } else {
             ngx_memcpy(dst, src, n);
             dst += n;
             src += n;
@@ -1962,12 +1968,6 @@ done:
             if (n != 0) {
                 *dst++ = '.';
             }
-
-        } else {
-            n = ((n & 0x3f) << 8) + *src;
-            src = &buf[n];
-
-            n = *src++;
         }
 
         if (n == 0) {