src/src/routers/accept.c

   1 /* $Cambridge: exim/src/src/routers/accept.c,v 1.6 2009/11/16 19:50:38 nm4 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2009 */
   8 /* See the file NOTICE for conditions of use and distribution. */
   9
  10
  11 #include "../exim.h"
  12 #include "rf_functions.h"
  13 #include "accept.h"
  14
  15
  16 /* Options specific to the accept router. Because some compilers do not like
  17 empty declarations ("undefined" in the Standard) we put in a dummy value. */
  18
  19 optionlist accept_router_options[] = {
  20   { "", opt_hidden, NULL }
  21 };
  22
  23 /* Size of the options list. An extern variable has to be used so that its
  24 address can appear in the tables drtables.c. */
  25
  26 int accept_router_options_count =
  27   sizeof(accept_router_options)/sizeof(optionlist);
  28
  29 /* Default private options block for the accept router. Again, a dummy
  30 value is used. */
  31
  32 accept_router_options_block accept_router_option_defaults = {
  33   NULL        /* dummy */
  34 };
  35
  36
  37
  38 /*************************************************
  39 *          Initialization entry point            *
  40 *************************************************/
  41
  42 /* Called for each instance, after its options have been read, to enable
  43 consistency checks to be done, or anything else that needs to be set up. */
  44
  45 void accept_router_init(router_instance *rblock)
  46 {
  47 /*
  48 accept_router_options_block *ob =
  49   (accept_router_options_block *)(rblock->options_block);
  50 */
  51
  52 /* By default, log deliveries via this router as local deliveries. We can't
  53 just leave it as TRUE_UNSET, because the global default is FALSE. */
  54
  55 if (rblock->log_as_local == TRUE_UNSET) rblock->log_as_local = TRUE;
  56 }
  57
  58
  59
  60 /*************************************************
  61 *              Main entry point                  *
  62 *************************************************/
  63
  64 /* See local README for interface description. This router returns:
  65
  66 DEFER
  67   . verifying the errors address caused a deferment or a big disaster such
  68       as an expansion failure (rf_get_errors_address)
  69   . expanding a headers_{add,remove} string caused a deferment or another
  70       expansion error (rf_get_munge_headers)
  71   . a problem in rf_get_transport: no transport when one is needed;
  72     failed to expand dynamic transport; failed to find dynamic transport
  73   . failure to expand or find a uid/gid (rf_get_ugid via rf_queue_add)
  74
  75 OK
  76   added address to addr_local or addr_remote, as appropriate for the
  77   type of transport
  78 */
  79
  80 int accept_router_entry(
  81   router_instance *rblock,        /* data for this instantiation */
  82   address_item *addr,             /* address we are working on */
  83   struct passwd *pw,              /* passwd entry after check_local_user */
  84   int verify,                     /* v_none/v_recipient/v_sender/v_expn */
  85   address_item **addr_local,      /* add it to this if it's local */
  86   address_item **addr_remote,     /* add it to this if it's remote */
  87   address_item **addr_new,        /* put new addresses on here */
  88   address_item **addr_succeed)    /* put old address here on success */
  89 {
  90 /*
  91 accept_router_options_block *ob =
  92   (accept_router_options_block *)(rblock->options_block);
  93 */
  94 int rc;
  95 uschar *errors_to;
  96 uschar *remove_headers;
  97 header_line *extra_headers;
  98
  99 addr_new = addr_new;  /* Keep picky compilers happy */
 100 addr_succeed = addr_succeed;
 101
 102 DEBUG(D_route) debug_printf("%s router called for %s\n  domain = %s\n",
 103   rblock->name, addr->address, addr->domain);
 104
 105 /* Set up the errors address, if any. */
 106
 107 rc = rf_get_errors_address(addr, rblock, verify, &errors_to);
 108 if (rc != OK) return rc;
 109
 110 /* Set up the additional and removeable headers for the address. */
 111
 112 rc = rf_get_munge_headers(addr, rblock, &extra_headers, &remove_headers);
 113 if (rc != OK) return rc;
 114
 115 /* Set the transport and accept the address; update its errors address and
 116 header munging. Initialization ensures that there is a transport except when
 117 verifying. */
 118
 119 if (!rf_get_transport(rblock->transport_name, &(rblock->transport),
 120   addr, rblock->name, NULL)) return DEFER;
 121
 122 addr->transport = rblock->transport;
 123 addr->p.errors_address = errors_to;
 124 addr->p.extra_headers = extra_headers;
 125 addr->p.remove_headers = remove_headers;
 126
 127 return rf_queue_add(addr, addr_local, addr_remote, rblock, pw)? OK : DEFER;
 128 }
 129
 130 /* End of routers/accept.c */