# HG changeset patch
# User Maxim Dounin <mdounin@mdounin.ru>
# Date 1353459097 0
# Node ID e7467ae416267b1cf470d1aa63c88ce88b147316
# Parent  484aec758d2c34fce25c55f7a7b1b991fd5a0f5e
Dav: fixed segfault on PUT if body was already read (ticket #238).

If request body reading happens with different options it's possible
that there will be no r->request_body->temp_file available (or even
no r->request_body available if body was discarded).  Return internal
server error in this case instead of committing suicide by dereferencing
a null pointer.

diff -r 484aec758d2c -r e7467ae41626 src/http/modules/ngx_http_dav_module.c
--- a/src/http/modules/ngx_http_dav_module.c	Tue Nov 20 13:37:55 2012 +0000
+++ b/src/http/modules/ngx_http_dav_module.c	Wed Nov 21 00:51:37 2012 +0000
@@ -209,6 +209,11 @@
     ngx_ext_rename_file_t     ext;
     ngx_http_dav_loc_conf_t  *dlcf;
 
+    if (r->request_body == NULL || r->request_body->temp_file == NULL) {
+        ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+        return;
+    }
+
     ngx_http_map_uri_to_path(r, &path, &root, 0);
 
     path.len--;