Properly handle missing Content-Length for partial HTTP fetches.

[wget] / src / http.c

diff --git a/src/http.c b/src/http.c
index 717bb46ee4377b28054644e7ae07b4864e4deb1e..da4b32e38e093476096c93491b137ea3b6f76521 100644 (file)
--- a/src/http.c
+++ b/src/http.c
@@ -1,6 +1,6 @@
 /* HTTP support.
    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-   2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+   2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 This file is part of GNU Wget.
 
@@ -864,8 +864,11 @@ parse_content_range (const char *hdr, wgint *first_byte_ptr,
     return false;
   *last_byte_ptr = num;
   ++hdr;
-  for (num = 0; c_isdigit (*hdr); hdr++)
-    num = 10 * num + (*hdr - '0');
+  if (*hdr == '*')
+    num = -1;
+  else
+    for (num = 0; c_isdigit (*hdr); hdr++)
+      num = 10 * num + (*hdr - '0');
   *entity_length_ptr = num;
   return true;
 }
@@ -2052,7 +2055,10 @@ File `%s' already there; not retrieving.\n\n"), hs->local_file);
       wgint first_byte_pos, last_byte_pos, entity_length;
       if (parse_content_range (hdrval, &first_byte_pos, &last_byte_pos,
                                &entity_length))
-        contrange = first_byte_pos;
+        {
+          contrange = first_byte_pos;
+          contlen = last_byte_pos - first_byte_pos + 1;
+        }
     }
   resp_free (resp);
 
@@ -2152,7 +2158,10 @@ File `%s' already there; not retrieving.\n\n"), hs->local_file);
       CLOSE_INVALIDATE (sock);
       return RANGEERR;
     }
-  hs->contlen = contlen + contrange;
+  if (contlen == -1)
+    hs->contlen = -1;
+  else
+    hs->contlen = contlen + contrange;
 
   if (opt.verbose)
     {