[nginx] Fixed config parsing of the last try_files parameter.

[Sergey Kandaurov]

details:   http://hg.nginx.org/nginx/rev/790ba7484bb6
branches:  
changeset: 5715:790ba7484bb6
user:      Sergey Kandaurov <pluknet at nginx.com>
date:      Wed May 28 20:18:05 2014 +0400
description:
Fixed config parsing of the last try_files parameter.

Do not taste the last parameter against directory, as otherwise it would
result in the trailing slash being cut from the parameter value.

Notably, this prevents an internal redirect to an empty URI
if the parameter is set to the literal slash:

    location / { try_files $uri /; }

diffstat:

 src/http/ngx_http_core_module.c |  3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diffs (13 lines):

diff -r 80bd391c90d1 -r 790ba7484bb6 src/http/ngx_http_core_module.c
--- a/src/http/ngx_http_core_module.c	Wed May 28 17:41:44 2014 +0400
+++ b/src/http/ngx_http_core_module.c	Wed May 28 20:18:05 2014 +0400
@@ -4789,7 +4789,8 @@ ngx_http_core_try_files(ngx_conf_t *cf, 
         tf[i].name = value[i + 1];
 
         if (tf[i].name.len > 0
-            && tf[i].name.data[tf[i].name.len - 1] == '/')
+            && tf[i].name.data[tf[i].name.len - 1] == '/'
+            && i + 2 < cf->args->nelts)
         {
             tf[i].test_dir = 1;
             tf[i].name.len--;