sendmail-hprescan-dos.patch

   1 diff -Nur sendmail-8.12.0.orig/sendmail/collect.c sendmail-8.12.0/sendmail/collect.c
   2 --- sendmail-8.12.0.orig/sendmail/collect.c     Wed Sep  5 00:43:02 2001
   3 +++ sendmail-8.12.0/sendmail/collect.c  Mon Sep 24 10:25:42 2001
   4 @@ -15,6 +15,8 @@
   5
   6  SM_RCSID("@(#)$Id$")
   7
   8 +#define MAXHDRZ 512
   9 +
  10  static void    collecttimeout __P((time_t));
  11  static void    dferror __P((SM_FILE_T *volatile, char *, ENVELOPE *));
  12  static void    eatfrom __P((char *volatile, ENVELOPE *));
  13 @@ -292,6 +294,7 @@
  14         HDR **hdrp;
  15         register ENVELOPE *e;
  16  {
  17 +       int hdrz = 0;
  18         register SM_FILE_T *volatile df;
  19         volatile bool ignrdot;
  20         volatile time_t dbto;
  21 @@ -582,6 +585,16 @@
  22                                 mstate = MS_BODY;
  23                                 goto nextstate;
  24                         }
  25 +
  26 +            if (hdrz++>MAXHDRZ)
  27 +                        {
  28 +                                sm_syslog(LOG_NOTICE, e->e_id,
  29 +                                "excessive headers from %s during message collect",
  30 +                                CurHostName ? CurHostName : "<local machine>");
  31 +                                errno = 0;
  32 +                                usrerr("451 Stop this. You are lame.");
  33 +                                goto readerr;
  34 +                        }
  35
  36                         /* check for possible continuation line */
  37                         do