[nginx] Resolver: style.

[Ruslan Ermilov]

details:   http://hg.nginx.org/nginx/rev/a6a5bacf6b74
branches:  
changeset: 6372:a6a5bacf6b74
user:      Ruslan Ermilov <ru at nginx.com>
date:      Thu Dec 17 17:30:22 2015 +0300
description:
Resolver: style.

Use the original query name in error and debug messages when
processing PTR responses.

diffstat:

 src/core/ngx_resolver.c |  17 ++++++++---------
 1 files changed, 8 insertions(+), 9 deletions(-)

diffs (78 lines):

diff -r 33c4d319f08f -r a6a5bacf6b74 src/core/ngx_resolver.c
--- a/src/core/ngx_resolver.c	Thu Dec 17 17:21:16 2015 +0300
+++ b/src/core/ngx_resolver.c	Thu Dec 17 17:30:22 2015 +0300
@@ -2396,7 +2396,6 @@ ngx_resolver_process_ptr(ngx_resolver_t 
 {
     char                 *err;
     size_t                len;
-    u_char                text[NGX_SOCKADDR_STRLEN];
     in_addr_t             addr;
     int32_t               ttl;
     ngx_int_t             octet;
@@ -2413,13 +2412,15 @@ ngx_resolver_process_ptr(ngx_resolver_t 
     struct in6_addr       addr6;
 #endif
 
-    if (ngx_resolver_copy(r, NULL, buf,
+    if (ngx_resolver_copy(r, &name, buf,
                           buf + sizeof(ngx_resolver_hdr_t), buf + n)
         != NGX_OK)
     {
         return;
     }
 
+    ngx_log_debug1(NGX_LOG_DEBUG_CORE, r->log, 0, "resolver qs:%V", &name);
+
     /* AF_INET */
 
     addr = 0;
@@ -2447,10 +2448,6 @@ ngx_resolver_process_ptr(ngx_resolver_t 
         tree = &r->addr_rbtree;
         expire_queue = &r->addr_expire_queue;
 
-        addr = htonl(addr);
-        name.len = ngx_inet_ntop(AF_INET, &addr, text, NGX_SOCKADDR_STRLEN);
-        name.data = text;
-
         goto valid;
     }
 
@@ -2495,9 +2492,6 @@ invalid_in_addr_arpa:
         tree = &r->addr6_rbtree;
         expire_queue = &r->addr6_expire_queue;
 
-        name.len = ngx_inet6_ntop(addr6.s6_addr, text, NGX_SOCKADDR_STRLEN);
-        name.data = text;
-
         goto valid;
     }
 
@@ -2506,6 +2500,7 @@ invalid_ip6_arpa:
 
     ngx_log_error(r->log_level, r->log, 0,
                   "invalid in-addr.arpa or ip6.arpa name in DNS response");
+    ngx_resolver_free(r, name.data);
     return;
 
 valid:
@@ -2513,6 +2508,7 @@ valid:
     if (rn == NULL || rn->query == NULL) {
         ngx_log_error(r->log_level, r->log, 0,
                       "unexpected response for %V", &name);
+        ngx_resolver_free(r, name.data);
         goto failed;
     }
 
@@ -2522,9 +2518,12 @@ valid:
         ngx_log_error(r->log_level, r->log, 0,
                       "wrong ident %ui response for %V, expect %ui",
                       ident, &name, qident);
+        ngx_resolver_free(r, name.data);
         goto failed;
     }
 
+    ngx_resolver_free(r, name.data);
+
     if (code == 0 && nan == 0) {
         code = NGX_RESOLVE_NXDOMAIN;
     }