src/src/routers/accept.c

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