[nginx] svn commit: r4434 - in branches/stable-1.0: . src/http

[mdounin at mdounin.ru]

Author: mdounin
Date: 2012-02-05 12:37:48 +0000 (Sun, 05 Feb 2012)
New Revision: 4434

Log:
Merge of r4335:

Fixed: some of $sent_http_* variables might contain header entries
which actually wasn't sent to a client.

The ngx_http_variable_headers() and ngx_http_variable_unknown_header()
functions did not ignore response header entries with zero "hash"
field.

Thanks to Yichun Zhang (agentzh).


Modified:
   branches/stable-1.0/
   branches/stable-1.0/src/http/ngx_http_variables.c


Property changes on: branches/stable-1.0
___________________________________________________________________
Modified: svn:mergeinfo
   - /trunk:3960-3974,3977-3987,3991-3996,3998,4000-4018,4020,4023,4025-4027,4034-4065,4073,4077,4086-4090,4094-4102,4106-4108,4113-4114,4129-4137,4143-4144,4147-4158,4177,4179,4182-4184,4186-4187,4189-4205,4207,4209-4210,4212,4217-4223,4227-4232,4235-4237,4265-4268,4270,4274-4276,4278-4280,4282-4284,4294-4295,4298,4300-4309,4313,4315,4320-4321,4326-4327,4342-4343,4377
   + /trunk:3960-3974,3977-3987,3991-3996,3998,4000-4018,4020,4023,4025-4027,4034-4065,4073,4077,4086-4090,4094-4102,4106-4108,4113-4114,4129-4137,4143-4144,4147-4158,4177,4179,4182-4184,4186-4187,4189-4205,4207,4209-4210,4212,4217-4223,4227-4232,4235-4237,4265-4268,4270,4274-4276,4278-4280,4282-4284,4294-4295,4298,4300-4309,4313,4315,4320-4321,4326-4327,4335,4342-4343,4377

Modified: branches/stable-1.0/src/http/ngx_http_variables.c
===================================================================
--- branches/stable-1.0/src/http/ngx_http_variables.c	2012-02-05 12:28:35 UTC (rev 4433)
+++ branches/stable-1.0/src/http/ngx_http_variables.c	2012-02-05 12:37:48 UTC (rev 4434)
@@ -640,8 +640,8 @@
 ngx_http_variable_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v,
     uintptr_t data)
 {
-    ssize_t            len;
-    u_char            *p;
+    size_t             len;
+    u_char            *p, *end;
     ngx_uint_t         i, n;
     ngx_array_t       *a;
     ngx_table_elt_t  **h;
@@ -649,18 +649,30 @@
     a = (ngx_array_t *) ((char *) r + data);
 
     n = a->nelts;
+    h = a->elts;
 
-    if (n == 0) {
+    len = 0;
+
+    for (i = 0; i < n; i++) {
+
+        if (h[i]->hash == 0) {
+            continue;
+        }
+
+        len += h[i]->value.len + sizeof("; ") - 1;
+    }
+
+    if (len == 0) {
         v->not_found = 1;
         return NGX_OK;
     }
 
+    len -= sizeof("; ") - 1;
+
     v->valid = 1;
     v->no_cacheable = 0;
     v->not_found = 0;
 
-    h = a->elts;
-
     if (n == 1) {
         v->len = (*h)->value.len;
         v->data = (*h)->value.data;
@@ -668,12 +680,6 @@
         return NGX_OK;
     }
 
-    len = - (ssize_t) (sizeof("; ") - 1);
-
-    for (i = 0; i < n; i++) {
-        len += h[i]->value.len + sizeof("; ") - 1;
-    }
-
     p = ngx_pnalloc(r->pool, len);
     if (p == NULL) {
         return NGX_ERROR;
@@ -682,10 +688,17 @@
     v->len = len;
     v->data = p;
 
+    end = p + len;
+
     for (i = 0; /* void */ ; i++) {
+
+        if (h[i]->hash == 0) {
+            continue;
+        }
+
         p = ngx_copy(p, h[i]->value.data, h[i]->value.len);
 
-        if (i == n - 1) {
+        if (p == end) {
             break;
         }
 
@@ -738,6 +751,10 @@
             i = 0;
         }
 
+        if (header[i].hash == 0) {
+            continue;
+        }
+
         for (n = 0; n + prefix < var->len && n < header[i].key.len; n++) {
             ch = header[i].key.data[n];