src/src/routers/rf_expand_data.c

   1 /* $Cambridge: exim/src/src/routers/rf_expand_data.c,v 1.1 2004/10/07 13:10:02 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2004 */
   8 /* See the file NOTICE for conditions of use and distribution. */
   9
  10
  11 #include "../exim.h"
  12 #include "rf_functions.h"
  13
  14
  15 /*************************************************
  16 *       Expand data string and handle errors     *
  17 *************************************************/
  18
  19 /* This little function is used by a couple of routers for expanding things. It
  20 just saves repeating this code too many times. It does an expansion, and
  21 chooses a suitable return code on error.
  22
  23 Arguments:
  24   addr       the address that's being routed
  25   s          the string to be expanded
  26   prc        pointer to where to put the return code on failure
  27
  28 Returns:     the expanded string, or NULL (with prc set) on failure
  29 */
  30
  31 uschar *
  32 rf_expand_data(address_item *addr, uschar *s, int *prc)
  33 {
  34 uschar *yield = expand_string(s);
  35 if (yield != NULL) return yield;
  36 if (expand_string_forcedfail)
  37   {
  38   DEBUG(D_route) debug_printf("forced failure for expansion of \"%s\"\n", s);
  39   *prc = DECLINE;
  40   }
  41 else
  42   {
  43   addr->message = string_sprintf("failed to expand \"%s\": %s", s,
  44     expand_string_message);
  45   *prc = DEFER;
  46   }
  47 return NULL;
  48 }
  49
  50 /* End of routers/rf_expand_data.c */