-/* $Cambridge: exim/src/src/routers/manualroute.c,v 1.4 2006/02/07 11:19:02 ph10 Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2006 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
/* Options specific to the manualroute router. */
optionlist manualroute_router_options[] = {
+ { "host_all_ignored", opt_stringptr,
+ OPT_OFF(manualroute_router_options_block, host_all_ignored) },
{ "host_find_failed", opt_stringptr,
- (void *)(offsetof(manualroute_router_options_block, host_find_failed)) },
+ OPT_OFF(manualroute_router_options_block, host_find_failed) },
{ "hosts_randomize", opt_bool,
- (void *)(offsetof(manualroute_router_options_block, hosts_randomize)) },
+ OPT_OFF(manualroute_router_options_block, hosts_randomize) },
{ "route_data", opt_stringptr,
- (void *)(offsetof(manualroute_router_options_block, route_data)) },
+ OPT_OFF(manualroute_router_options_block, route_data) },
{ "route_list", opt_stringptr,
- (void *)(offsetof(manualroute_router_options_block, route_list)) },
+ OPT_OFF(manualroute_router_options_block, route_list) },
{ "same_domain_copy_routing", opt_bool|opt_public,
- (void *)(offsetof(router_instance, same_domain_copy_routing)) }
+ OPT_OFF(router_instance, same_domain_copy_routing) }
};
/* Size of the options list. An extern variable has to be used so that its
int manualroute_router_options_count =
sizeof(manualroute_router_options)/sizeof(optionlist);
+
+#ifdef MACRO_PREDEF
+
+/* Dummy entries */
+manualroute_router_options_block manualroute_router_option_defaults = {0};
+void manualroute_router_init(router_instance *rblock) {}
+int manualroute_router_entry(router_instance *rblock, address_item *addr,
+ struct passwd *pw, int verify, address_item **addr_local,
+ address_item **addr_remote, address_item **addr_new,
+ address_item **addr_succeed) {return 0;}
+
+#else /*!MACRO_PREDEF*/
+
+
+
/* Default private options block for the manualroute router. */
manualroute_router_options_block manualroute_router_option_defaults = {
- hff_freeze, /* host_find_failed code */
+ -1, /* host_all_ignored code (unset) */
+ -1, /* host_find_failed code (unset) */
FALSE, /* hosts_randomize */
+ US"defer", /* host_all_ignored */
US"freeze", /* host_find_failed */
NULL, /* route_data */
NULL /* route_list */
};
+/* Names and values for host_find_failed and host_all_ignored. */
+
+static uschar *hff_names[] = {
+ US"ignore", /* MUST be first - not valid for host_all_ignored */
+ US"decline",
+ US"defer",
+ US"fail",
+ US"freeze",
+ US"pass" };
+
+static int hff_codes[] = { hff_ignore, hff_decline, hff_defer, hff_fail,
+ hff_freeze, hff_pass };
+
+static int hff_count= sizeof(hff_codes)/sizeof(int);
/* Host_find_failed must be a recognized word */
-if (Ustrcmp(ob->host_find_failed, "freeze") == 0)
- ob->hff_code = hff_freeze;
-else if (Ustrcmp(ob->host_find_failed, "decline") == 0)
- ob->hff_code = hff_decline;
-else if (Ustrcmp(ob->host_find_failed, "defer") == 0)
- ob->hff_code = hff_defer;
-else if (Ustrcmp(ob->host_find_failed, "pass") == 0)
- ob->hff_code = hff_pass;
-else if (Ustrcmp(ob->host_find_failed, "fail") == 0)
- ob->hff_code = hff_fail;
-else
+for (int i = 0; i < hff_count; i++)
+ if (Ustrcmp(ob->host_find_failed, hff_names[i]) == 0)
+ {
+ ob->hff_code = hff_codes[i];
+ break;
+ }
+if (ob->hff_code < 0)
log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
"unrecognized setting for host_find_failed option", rblock->name);
+for (int i = 1; i < hff_count; i++) /* NB starts at 1 to skip "ignore" */
+ if (Ustrcmp(ob->host_all_ignored, hff_names[i]) == 0)
+ {
+ ob->hai_code = hff_codes[i];
+ break;
+ }
+if (ob->hai_code < 0)
+ log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
+ "unrecognized setting for host_all_ignored option", rblock->name);
+
/* One of route_list or route_data must be specified */
if ((ob->route_list == NULL && ob->route_data == NULL) ||
*/
static BOOL
-parse_route_item(uschar *s, uschar **domain, uschar **hostlist,
- uschar **options)
+parse_route_item(const uschar *s, const uschar **domain, const uschar **hostlist,
+ const uschar **options)
{
while (*s != 0 && isspace(*s)) s++;
-if (domain != NULL)
+if (domain)
{
- if (*s == 0) return FALSE; /* missing data */
+ if (!*s) return FALSE; /* missing data */
*domain = string_dequote(&s);
- while (*s != 0 && isspace(*s)) s++;
+ while (*s && isspace(*s)) s++;
}
*hostlist = string_dequote(&s);
-while (*s != 0 && isspace(*s)) s++;
+while (*s && isspace(*s)) s++;
*options = s;
return TRUE;
}
{
int rc, lookup_type;
uschar *route_item = NULL;
-uschar *options = NULL;
-uschar *hostlist = NULL;
-uschar *domain, *newhostlist, *listptr;
+const uschar *options = NULL;
+const uschar *hostlist = NULL;
+const uschar *domain;
+uschar *newhostlist;
+const uschar *listptr;
manualroute_router_options_block *ob =
(manualroute_router_options_block *)(rblock->options_block);
transport_instance *transport = NULL;
/* The initialization check ensures that either route_list or route_data is
set. */
-if (ob->route_list != NULL)
+if (ob->route_list)
{
int sep = -(';'); /* Default is semicolon */
listptr = ob->route_list;
/* Check the current domain; if it matches, break the loop */
if ((rc = match_isinlist(addr->domain, &domain, UCHAR_MAX+1,
- &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, &lookup_value)) == OK)
+ &domainlist_anchor, NULL, MCL_DOMAIN, TRUE, CUSS &lookup_value)) == OK)
break;
/* If there was a problem doing the check, defer */
}
}
- if (route_item == NULL) return DECLINE; /* No pattern in the list matched */
+ if (!route_item) return DECLINE; /* No pattern in the list matched */
}
/* Handle a single routing item in route_data. If it expands to an empty
else
{
- route_item = rf_expand_data(addr, ob->route_data, &rc);
- if (route_item == NULL) return rc;
+ if (!(route_item = rf_expand_data(addr, ob->route_data, &rc)))
+ return rc;
(void) parse_route_item(route_item, NULL, &hostlist, &options);
- if (hostlist[0] == 0) return DECLINE;
+ if (!hostlist[0]) return DECLINE;
}
/* Expand the hostlist item. It may then pointing to an empty string, or to a
single host or a list of hosts; options is pointing to the rest of the
routelist item, which is either empty or contains various option words. */
-DEBUG(D_route) debug_printf("original list of hosts = \"%s\" options = %s\n",
+DEBUG(D_route) debug_printf("original list of hosts = '%s' options = '%s'\n",
hostlist, options);
newhostlist = expand_string_copy(hostlist);
/* If the expansion was forced to fail, just decline. Otherwise there is a
configuration problem. */
-if (newhostlist == NULL)
+if (!newhostlist)
{
- if (expand_string_forcedfail) return DECLINE;
+ if (f.expand_string_forcedfail) return DECLINE;
addr->message = string_sprintf("%s router: failed to expand \"%s\": %s",
rblock->name, hostlist, expand_string_message);
return DEFER;
}
else hostlist = newhostlist;
-DEBUG(D_route) debug_printf("expanded list of hosts = \"%s\" options = %s\n",
+DEBUG(D_route) debug_printf("expanded list of hosts = '%s' options = '%s'\n",
hostlist, options);
/* Set default lookup type and scan the options */
-lookup_type = lk_default;
+lookup_type = LK_DEFAULT;
-while (*options != 0)
+while (*options)
{
- int term;
- uschar *s = options;
+ unsigned n;
+ const uschar *s = options;
while (*options != 0 && !isspace(*options)) options++;
- term = *options;
- *options = 0;
-
- if (Ustrcmp(s, "randomize") == 0) randomize = TRUE;
- else if (Ustrcmp(s, "no_randomize") == 0) randomize = FALSE;
- else if (Ustrcmp(s, "byname") == 0) lookup_type = lk_byname;
- else if (Ustrcmp(s, "bydns") == 0) lookup_type = lk_bydns;
+ n = options-s;
+
+ if (Ustrncmp(s, "randomize", n) == 0) randomize = TRUE;
+ else if (Ustrncmp(s, "no_randomize", n) == 0) randomize = FALSE;
+ else if (Ustrncmp(s, "byname", n) == 0)
+ lookup_type = lookup_type & ~(LK_DEFAULT | LK_BYDNS) | LK_BYNAME;
+ else if (Ustrncmp(s, "bydns", n) == 0)
+ lookup_type = lookup_type & ~(LK_DEFAULT | LK_BYNAME) & LK_BYDNS;
+ else if (Ustrncmp(s, "ipv4_prefer", n) == 0) lookup_type |= LK_IPV4_PREFER;
+ else if (Ustrncmp(s, "ipv4_only", n) == 0) lookup_type |= LK_IPV4_ONLY;
else
{
transport_instance *t;
- for (t = transports; t != NULL; t = t->next)
- {
- if (Ustrcmp(t->name, s) == 0)
+ for (t = transports; t; t = t->next)
+ if (Ustrncmp(t->name, s, n) == 0)
{
transport = t;
individual_transport_set = TRUE;
break;
}
- }
- if (t == NULL)
+
+ if (!t)
{
s = string_sprintf("unknown routing option or transport name \"%s\"", s);
log_write(0, LOG_MAIN, "Error in %s router: %s", rblock->name, s);
}
}
- if (term != 0)
+ if (*options)
{
options++;
while (*options != 0 && isspace(*options)) options++;
/* Set up the errors address, if any. */
-rc = rf_get_errors_address(addr, rblock, verify, &(addr->p.errors_address));
+rc = rf_get_errors_address(addr, rblock, verify, &addr->prop.errors_address);
if (rc != OK) return rc;
-/* Set up the additional and removeable headers for this address. */
+/* Set up the additional and removable headers for this address. */
-rc = rf_get_munge_headers(addr, rblock, &(addr->p.extra_headers),
- &(addr->p.remove_headers));
+rc = rf_get_munge_headers(addr, rblock, &addr->prop.extra_headers,
+ &addr->prop.remove_headers);
if (rc != OK) return rc;
/* If an individual transport is not set, get the transport for this router, if
/* Deal with the case of a local transport. The host list is passed over as a
single text string that ends up in $host. */
-if (transport != NULL && transport->info->local)
+if (transport && transport->info->local)
{
- if (hostlist[0] != 0)
+ if (hostlist[0])
{
host_item *h;
- addr->host_list = h = store_get(sizeof(host_item));
+ addr->host_list = h = store_get(sizeof(host_item), FALSE);
h->name = string_copy(hostlist);
h->address = NULL;
h->port = PORT_NONE;
list is mandatory in either case, except when verifying, in which case the
address is just accepted. */
-if (hostlist[0] == 0)
+if (!hostlist[0])
{
if (verify != v_none) goto ROUTED;
addr->message = string_sprintf("error in %s router: no host(s) specified "
- "for domain %s", rblock->name, domain);
+ "for domain %s", rblock->name, addr->domain);
log_write(0, LOG_MAIN, "%s", addr->message);
return DEFER;
}
/* Otherwise we finish the routing here by building a chain of host items
for the list of configured hosts, and then finding their addresses. */
-host_build_hostlist(&(addr->host_list), hostlist, randomize);
+host_build_hostlist(&addr->host_list, hostlist, randomize);
rc = rf_lookup_hostlist(rblock, addr, rblock->ignore_target_hosts, lookup_type,
ob->hff_code, addr_new);
if (rc != OK) return rc;
+/* If host_find_failed is set to "ignore", it is possible for all the hosts to
+be ignored, in which case we will end up with an empty host list. What happens
+is controlled by host_all_ignored. */
+
+if (!addr->host_list)
+ {
+ int i;
+ DEBUG(D_route) debug_printf("host_find_failed ignored every host\n");
+ if (ob->hai_code == hff_decline) return DECLINE;
+ if (ob->hai_code == hff_pass) return PASS;
+
+ for (i = 0; i < hff_count; i++)
+ if (ob->hai_code == hff_codes[i]) break;
+
+ addr->message = string_sprintf("lookup failed for all hosts in %s router: "
+ "host_find_failed=ignore host_all_ignored=%s", rblock->name, hff_names[i]);
+
+ if (ob->hai_code == hff_defer) return DEFER;
+ if (ob->hai_code == hff_fail) return FAIL;
+
+ addr->special_action = SPECIAL_FREEZE;
+ return DEFER;
+ }
+
/* Finally, since we have done all the routing here, there must be a transport
defined for these hosts. It will be a remote one, as a local transport is
dealt with above. However, we don't need one if verifying only. */
return OK;
}
+#endif /*!MACRO_PREDEF*/
/* End of routers/manualroute.c */
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