http_file: allow zero size files (bug fix)

diff --git a/src/filter_http_file.cpp b/src/filter_http_file.cpp
index d036433..25ad1b9 100644 (file)
--- a/src/filter_http_file.cpp
+++ b/src/filter_http_file.cpp
@@ -158,15 +158,17 @@ void yf::HttpFile::Rep::fetch_file(mp::Session &session,
 
     Z_HTTP_Response *hres = gdu->u.HTTP_Response;
     hres->content_len = sz;
-    hres->content_buf = (char*) odr_malloc(o, hres->content_len);
-    if (fread(hres->content_buf, hres->content_len, 1, f) != 1)
+    if (hres->content_len > 0)
     {
-        fclose(f);
-        Z_GDU *gdu = o.create_HTTP_Response(session, req, 500);
-        package.response() = gdu;
-        return;
+        hres->content_buf = (char*) odr_malloc(o, hres->content_len);
+        if (fread(hres->content_buf, hres->content_len, 1, f) != 1)
+        {
+            fclose(f);
+            Z_GDU *gdu = o.create_HTTP_Response(session, req, 500);
+            package.response() = gdu;
+            return;
+        }
     }
-
     fclose(f);
     
     std::string content_type = get_mime_type(fname);