src/src/routers/rf_change_domain.c

   1 /* $Cambridge: exim/src/src/routers/rf_change_domain.c,v 1.4 2007/01/08 10:50:20 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2007 */
   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 /*************************************************
  17 *          Change domain in an address           *
  18 *************************************************/
  19
  20 /* When a router wants to change the address that is being routed, it is like a
  21 redirection. We insert a new parent of the current address to hold the original
  22 information, and change the data in the original address, which is now the
  23 child. The child address is put onto the addr_new chain. Pick up the local part
  24 from the "address" field so as to get it in external form - caseful, and with
  25 any quoting retained.
  26
  27 Arguments:
  28   addr        the address block
  29   domain      the new domain
  30   rewrite     TRUE if headers lines are to be rewritten
  31   addr_new    the new address chain
  32
  33 Returns:      nothing
  34 */
  35
  36 void
  37 rf_change_domain(address_item *addr, uschar *domain, BOOL rewrite,
  38   address_item **addr_new)
  39 {
  40 address_item *parent = store_get(sizeof(address_item));
  41 uschar *at = Ustrrchr(addr->address, '@');
  42 uschar *address = string_sprintf("%.*s@%s", at - addr->address, addr->address,
  43   domain);
  44
  45 DEBUG(D_route) debug_printf("domain changed to %s\n", domain);
  46
  47 /* The current address item is made into the parent, and a new address is set
  48 up in the old space. */
  49
  50 *parent = *addr;
  51
  52 /* First copy in initializing values, to wipe out stuff such as the named
  53 domain cache. Then copy over the propagating fields from the parent. Then set
  54 up the new fields. */
  55
  56 *addr = address_defaults;
  57 addr->p = parent->p;
  58
  59 addr->address = address;
  60 addr->unique = string_copy(address);
  61 addr->parent = parent;
  62
  63 addr->next = *addr_new;
  64 *addr_new = addr;
  65
  66 /* Rewrite header lines if requested */
  67
  68 if (rewrite)
  69   {
  70   header_line *h;
  71   DEBUG(D_route|D_rewrite) debug_printf("rewriting header lines\n");
  72   for (h = header_list; h != NULL; h = h->next)
  73     {
  74     header_line *newh =
  75       rewrite_header(h, parent->domain, domain,
  76         global_rewrite_rules, rewrite_existflags, TRUE);
  77     if (newh != NULL)
  78       {
  79       h = newh;
  80       header_rewritten = TRUE;
  81       }
  82     }
  83   }
  84 }
  85
  86 /* End of rf_change_domain.c */