13ad91c30004e8b4f2b56d7d2900852280cbc886
[exim.git] / src / src / routers / accept.c
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
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 #ifdef MACRO_PREDEF
36
37 /* Dummy entries */
38 void accept_router_init(router_instance *rblock) {}
39 int accept_router_entry(router_instance *rblock, address_item *addr,
40 struct passwd *pw, int verify, address_item **addr_local,
41 address_item **addr_remote, address_item **addr_new,
42 address_item **addr_succeed) {return 0;}
43
44 #else /*!MACRO_PREDEF*/
45
46
47
48 /*************************************************
49 * Initialization entry point *
50 *************************************************/
51
52 /* Called for each instance, after its options have been read, to enable
53 consistency checks to be done, or anything else that needs to be set up. */
54
55 void accept_router_init(router_instance *rblock)
56 {
57 /*
58 accept_router_options_block *ob =
59 (accept_router_options_block *)(rblock->options_block);
60 */
61
62 /* By default, log deliveries via this router as local deliveries. We can't
63 just leave it as TRUE_UNSET, because the global default is FALSE. */
64
65 if (rblock->log_as_local == TRUE_UNSET) rblock->log_as_local = TRUE;
66 }
67
68
69
70 /*************************************************
71 * Main entry point *
72 *************************************************/
73
74 /* See local README for interface description. This router returns:
75
76 DEFER
77 . verifying the errors address caused a deferment or a big disaster such
78 as an expansion failure (rf_get_errors_address)
79 . expanding a headers_{add,remove} string caused a deferment or another
80 expansion error (rf_get_munge_headers)
81 . a problem in rf_get_transport: no transport when one is needed;
82 failed to expand dynamic transport; failed to find dynamic transport
83 . failure to expand or find a uid/gid (rf_get_ugid via rf_queue_add)
84
85 OK
86 added address to addr_local or addr_remote, as appropriate for the
87 type of transport
88 */
89
90 int accept_router_entry(
91 router_instance *rblock, /* data for this instantiation */
92 address_item *addr, /* address we are working on */
93 struct passwd *pw, /* passwd entry after check_local_user */
94 int verify, /* v_none/v_recipient/v_sender/v_expn */
95 address_item **addr_local, /* add it to this if it's local */
96 address_item **addr_remote, /* add it to this if it's remote */
97 address_item **addr_new, /* put new addresses on here */
98 address_item **addr_succeed) /* put old address here on success */
99 {
100 /*
101 accept_router_options_block *ob =
102 (accept_router_options_block *)(rblock->options_block);
103 */
104 int rc;
105 uschar *errors_to;
106 uschar *remove_headers;
107 header_line *extra_headers;
108
109 addr_new = addr_new; /* Keep picky compilers happy */
110 addr_succeed = addr_succeed;
111
112 DEBUG(D_route) debug_printf("%s router called for %s\n domain = %s\n",
113 rblock->name, addr->address, addr->domain);
114
115 /* Set up the errors address, if any. */
116
117 rc = rf_get_errors_address(addr, rblock, verify, &errors_to);
118 if (rc != OK) return rc;
119
120 /* Set up the additional and removable headers for the address. */
121
122 rc = rf_get_munge_headers(addr, rblock, &extra_headers, &remove_headers);
123 if (rc != OK) return rc;
124
125 /* Set the transport and accept the address; update its errors address and
126 header munging. Initialization ensures that there is a transport except when
127 verifying. */
128
129 if (!rf_get_transport(rblock->transport_name, &(rblock->transport),
130 addr, rblock->name, NULL)) return DEFER;
131
132 addr->transport = rblock->transport;
133 addr->prop.errors_address = errors_to;
134 addr->prop.extra_headers = extra_headers;
135 addr->prop.remove_headers = remove_headers;
136
137 return rf_queue_add(addr, addr_local, addr_remote, rblock, pw)? OK : DEFER;
138 }
139
140 #endif /*!MACRO_PREDEF*/
141 /* End of routers/accept.c */