Dav: return 501 on PUT with ranges (ticket #948).

src/http/modules/ngx_http_dav_module.c

diff --git a/src/http/modules/ngx_http_dav_module.c b/src/http/modules/ngx_http_dav_module.c
index 3600265..012a0fb 100644
--- a/src/http/modules/ngx_http_dav_module.c
+++ b/src/http/modules/ngx_http_dav_module.c
@@ -161,6 +161,12 @@
             return NGX_HTTP_CONFLICT;
         }
 
+        if (r->headers_in.content_range) {
+            ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                          "PUT with range is unsupported");
+            return NGX_HTTP_NOT_IMPLEMENTED;
+        }
+
         r->request_body_in_file_only = 1;
         r->request_body_in_persistent_file = 1;
         r->request_body_in_clean_file = 1;

src/http/ngx_http_request.c

diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index aa3c398..8665e5b 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -110,6 +110,10 @@
                  offsetof(ngx_http_headers_in_t, content_length),
                  ngx_http_process_unique_header_line },
 
+    { ngx_string("Content-Range"),
+                 offsetof(ngx_http_headers_in_t, content_range),
+                 ngx_http_process_unique_header_line },
+
     { ngx_string("Content-Type"),
                  offsetof(ngx_http_headers_in_t, content_type),
                  ngx_http_process_header_line },

src/http/ngx_http_request.h

diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index cfde7dc..fcd50de 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -182,6 +182,7 @@
     ngx_table_elt_t                  *user_agent;
     ngx_table_elt_t                  *referer;
     ngx_table_elt_t                  *content_length;
+    ngx_table_elt_t                  *content_range;
     ngx_table_elt_t                  *content_type;
 
     ngx_table_elt_t                  *range;