1 /* $Cambridge: exim/src/src/routers/ipliteral.c,v 1.9 2007/01/08 10:50:20 ph10 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2007 */
8 /* See the file NOTICE for conditions of use and distribution. */
12 #include "rf_functions.h"
13 #include "ipliteral.h"
16 /* Options specific to the ipliteral router. Because some compilers do not like
17 empty declarations ("undefined" in the Standard) we put in a dummy value. */
19 optionlist ipliteral_router_options[] = {
20 { "", opt_hidden, NULL }
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. */
26 int ipliteral_router_options_count =
27 sizeof(ipliteral_router_options)/sizeof(optionlist);
29 /* Default private options block for the ipliteral router. Again, a dummy
30 value is present to keep some compilers happy. */
32 ipliteral_router_options_block ipliteral_router_option_defaults = { 0 };
36 /*************************************************
37 * Initialization entry point *
38 *************************************************/
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. */
44 ipliteral_router_init(router_instance *rblock)
47 ipliteral_router_options_block *ob =
48 (ipliteral_router_options_block *)(rblock->options_block);
55 /*************************************************
57 *************************************************/
59 /* See local README for interface details. This router returns:
62 . the domain is not in the form of an IP literal
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 . self = "freeze", self = "defer"
84 added address to addr_local or addr_remote, as appropriate for the
85 type of transport; this includes the self="send" case.
89 ipliteral_router_entry(
90 router_instance *rblock, /* data for this instantiation */
91 address_item *addr, /* address we are working on */
92 struct passwd *pw, /* passwd entry after check_local_user */
93 int verify, /* v_none/v_recipient/v_sender/v_expn */
94 address_item **addr_local, /* add it to this if it's local */
95 address_item **addr_remote, /* add it to this if it's remote */
96 address_item **addr_new, /* put new addresses on here */
97 address_item **addr_succeed) /* put old address here on success */
100 ipliteral_router_options_block *ob =
101 (ipliteral_router_options_block *)(rblock->options_block);
104 uschar *domain = addr->domain;
106 int len = Ustrlen(domain);
109 addr_new = addr_new; /* Keep picky compilers happy */
110 addr_succeed = addr_succeed;
112 DEBUG(D_route) debug_printf("%s router called for %s: domain = %s\n",
113 rblock->name, addr->address, addr->domain);
115 /* Check that the domain is an IP address enclosed in square brackets. Remember
116 to allow for the "official" form of IPv6 addresses. If not, the router
117 declines. Otherwise route to the single IP address, setting the host name to
120 if (domain[0] != '[' || domain[len-1] != ']') return DECLINE;
121 domain[len-1] = 0; /* temporarily */
124 if (strncmpic(ip, US"IPV6:", 5) == 0 || strncmpic(ip, US"IPV4:", 5) == 0)
127 ipv = string_is_ip_address(ip, NULL);
128 if (ipv == 0 || (disable_ipv6 && ipv == 6))
134 /* It seems unlikely that ignore_target_hosts will be used with this router,
135 but if it is set, it should probably work. */
137 if (verify_check_this_host(&(rblock->ignore_target_hosts), NULL, domain,
141 debug_printf("%s is in ignore_target_hosts\n", ip);
142 addr->message = US"IP literal host explicitly ignored";
147 /* Set up a host item */
149 h = store_get(sizeof(host_item));
152 h->address = string_copy(ip);
154 domain[len-1] = ']'; /* restore */
155 h->name = string_copy(domain);
157 h->status = hstatus_unknown;
158 h->why = hwhy_unknown;
161 /* Determine whether the host is the local host, and if so, take action
162 according to the configuration. */
164 if (host_scan_for_local_hosts(h, &h, NULL) == HOST_FOUND_LOCAL)
166 int rc = rf_self_action(addr, h, rblock->self_code, rblock->self_rewrite,
167 rblock->self, addr_new);
168 if (rc != OK) return rc;
171 /* Address is routed to this host */
175 /* Set up the errors address, if any. */
177 rc = rf_get_errors_address(addr, rblock, verify, &(addr->p.errors_address));
178 if (rc != OK) return rc;
180 /* Set up the additional and removeable headers for this address. */
182 rc = rf_get_munge_headers(addr, rblock, &(addr->p.extra_headers),
183 &(addr->p.remove_headers));
184 if (rc != OK) return rc;
186 /* Fill in the transport, queue the address for local or remote delivery, and
187 yield success. For local delivery, of course, the IP address won't be used. If
188 just verifying, there need not be a transport, in which case it doesn't matter
189 which queue we put the address on. This is all now handled by the route_queue()
192 if (!rf_get_transport(rblock->transport_name, &(rblock->transport),
193 addr, rblock->name, NULL))
196 addr->transport = rblock->transport;
198 return rf_queue_add(addr, addr_local, addr_remote, rblock, pw)?
202 /* End of routers/ipliteral.c */