sendmail-hprescan-dos.patch

   1 --- sendmail-8.13.3/sendmail/collect.c~ 2004-12-01 00:29:15.000000000 +0100
   2 +++ sendmail-8.13.3/sendmail/collect.c  2005-03-08 09:43:40.848804648 +0100
   3 @@ -15,6 +15,8 @@
   4
   5  SM_RCSID("@(#)$Id$")
   6
   7 +#define MAXHDRZ 512
   8 +
   9  static void    eatfrom __P((char *volatile, ENVELOPE *));
  10  static void    collect_doheader __P((ENVELOPE *));
  11  static SM_FILE_T *collect_dfopen __P((ENVELOPE *));
  12 @@ -283,6 +285,7 @@
  13         register ENVELOPE *e;
  14         bool rsetsize;
  15  {
  16 +       int hdrz = 0;
  17         register SM_FILE_T *df;
  18         bool ignrdot;
  19         int dbto;
  20 @@ -613,6 +616,16 @@
  21                                 mstate = MS_BODY;
  22                                 goto nextstate;
  23                         }
  24 +
  25 +            if (hdrz++>MAXHDRZ)
  26 +                        {
  27 +                                sm_syslog(LOG_NOTICE, e->e_id,
  28 +                                "excessive headers from %s during message collect",
  29 +                                CurHostName ? CurHostName : "<local machine>");
  30 +                                errno = 0;
  31 +                                usrerr("451 Stop this. You are lame.");
  32 +                                goto readerr;
  33 +                        }
  34
  35                         /* check for possible continuation line */
  36                         do