* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
/* Functions concerned with routing, and the list of generic router options. */
(void *)(offsetof(router_instance, self)) },
{ "senders", opt_stringptr|opt_public,
(void *)offsetof(router_instance, senders) },
+ { "set", opt_stringptr|opt_public|opt_rep_str,
+ (void *)offsetof(router_instance, set) },
#ifdef SUPPORT_TRANSLATE_IP_ADDRESS
{ "translate_ip_address", opt_stringptr|opt_public,
(void *)offsetof(router_instance, translate_ip_address) },
(void *)offsetof(router_instance, verify_sender) }
};
-int optionlist_routers_size = sizeof(optionlist_routers)/sizeof(optionlist);
+int optionlist_routers_size = nelem(optionlist_routers);
+#ifdef MACRO_PREDEF
+
+# include "macro_predef.h"
+
void
-readconf_options_routers(void)
+options_routers(void)
{
-struct router_info * ri;
+uschar buf[64];
-readconf_options_from_list(optionlist_routers, nelem(optionlist_routers), US"ROUTERS", NULL);
+options_from_list(optionlist_routers, nelem(optionlist_routers), US"ROUTERS", NULL);
-for (ri = routers_available; ri->driver_name[0]; ri++)
+for (router_info * ri = routers_available; ri->driver_name[0]; ri++)
{
- macro_create(string_sprintf("_DRIVER_ROUTER_%T", ri->driver_name), US"y", FALSE, TRUE);
- readconf_options_from_list(ri->options, (unsigned)*ri->options_count, US"ROUTER", ri->driver_name);
+ spf(buf, sizeof(buf), US"_DRIVER_ROUTER_%T", ri->driver_name);
+ builtin_macro_create(buf);
+ options_from_list(ri->options, (unsigned)*ri->options_count, US"ROUTER", ri->driver_name);
}
}
+#else /*!MACRO_PREDEF*/
+
/*************************************************
* Set router pointer from name *
*************************************************/
void
route_init(void)
{
-router_instance *r;
-
readconf_driver_init(US"router",
(driver_instance **)(&routers), /* chain anchor */
(driver_info *)routers_available, /* available drivers */
optionlist_routers, /* generic options */
optionlist_routers_size);
-for (r = routers; r; r = r->next)
+for (router_instance * r = routers; r; r = r->next)
{
uschar *s = r->self;
/* Check for transport or no transport on certain routers */
- if ((r->info->ri_flags & ri_yestransport) != 0 &&
- r->transport_name == NULL &&
- !r->verify_only)
+ if ( (r->info->ri_flags & ri_yestransport)
+ && !r->transport_name && !r->verify_only)
log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "%s router:\n "
"a transport is required for this router", r->name);
- if ((r->info->ri_flags & ri_notransport) != 0 &&
- r->transport_name != NULL)
+ if ((r->info->ri_flags & ri_notransport) && r->transport_name)
log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "%s router:\n "
"a transport must not be defined for this router", r->name);
/* Check redirect_router and pass_router are valid */
- if (r->redirect_router_name != NULL)
+ if (r->redirect_router_name)
set_router(r, r->redirect_router_name, &(r->redirect_router), FALSE);
- if (r->pass_router_name != NULL)
+ if (r->pass_router_name)
set_router(r, r->pass_router_name, &(r->pass_router), TRUE);
+#ifdef notdef
DEBUG(D_route) debug_printf("DSN: %s %s\n", r->name,
r->dsn_lasthop ? "lasthop set" : "propagating DSN");
+#endif
}
}
void
route_tidyup(void)
{
-router_instance *r;
-for (r = routers; r; r = r->next)
+for (router_instance * r = routers; r; r = r->next)
if (r->info->tidyup) (r->info->tidyup)(r);
}
int plen = Ustrlen(prefix);
if (prefix[0] == '*')
{
- const uschar *p;
prefix++;
- for (p = local_part + Ustrlen(local_part) - (--plen);
+ for (const uschar * p = local_part + Ustrlen(local_part) - (--plen);
p >= local_part; p--)
if (strncmpic(prefix, p, plen) == 0) return plen + p - local_part;
}
int slen = Ustrlen(suffix);
if (suffix[slen-1] == '*')
{
- const uschar *p, *pend;
- pend = local_part + alen - (--slen) + 1;
- for (p = local_part; p < pend; p++)
+ const uschar *pend = local_part + alen - (--slen) + 1;
+ for (const uschar * p = local_part; p < pend; p++)
if (strncmpic(suffix, p, slen) == 0) return alen - (p - local_part);
}
else
if (!ss)
{
- if (expand_string_forcedfail) continue;
+ if (f.expand_string_forcedfail) continue;
*perror = string_sprintf("failed to expand \"%s\" for require_files: %s",
check, expand_string_message);
goto RETURN_DEFER;
pid = fork();
/* If fork() fails, reinstate the original error and behave as if
- this block of code were not present. This is the same behavious as happens
+ this block of code were not present. This is the same behaviour as happens
when Exim is not running as root at this point. */
if (pid < 0)
rc = -1;
}
- /* Handle error returns from stat() or route_check_access(). The EACESS error
+ /* Handle error returns from stat() or route_check_access(). The EACCES error
is handled specially. At present, we can force it to be treated as
non-existence. Write the code so that it will be easy to add forcing for
existence if required later. */
sender_data = NULL;
local_user_gid = (gid_t)(-1);
local_user_uid = (uid_t)(-1);
-search_find_defer = FALSE;
+f.search_find_defer = FALSE;
/* Skip this router if not verifying and it has verify_only set */
/* Skip this router if testing an address (-bt) and address_test is not set */
-if (address_test_mode && !r->address_test)
+if (f.address_test_mode && !r->address_test)
{
DEBUG(D_route) debug_printf("%s router skipped: address_test is unset\n",
r->name);
uschar *router_home = expand_string(r->router_home_directory);
if (!router_home)
{
- if (!expand_string_forcedfail)
+ if (!f.expand_string_forcedfail)
{
*perror = string_sprintf("failed to expand \"%s\" for "
"router_home_directory: %s", r->router_home_directory,
}
/* Skip if the sender condition is not met. We leave this one till after the
-local user check so that $home is set - enabling the possiblity of letting
+local user check so that $home is set - enabling the possibility of letting
individual recipients specify lists of acceptable/unacceptable senders. */
if ((rc = route_check_dls(r->name, US"senders", r->senders, NULL,
DEBUG(D_route) debug_printf("checking \"condition\" \"%.80s\"...\n", r->condition);
if (!expand_check_condition(r->condition, r->name, US"router"))
{
- if (search_find_defer)
+ if (f.search_find_defer)
{
*perror = US"condition check lookup defer";
DEBUG(D_route) debug_printf("%s\n", *perror);
doesn't have some kind of indication as to why it has failed.
Arguments:
- s the group namd or textual form of the numerical gid
+ s the group name or textual form of the numerical gid
return_gid return the gid via this address
Returns: TRUE if the group was found; FALSE otherwise
/* Copy the propagated flags and address_data from the original. */
-copyflag(new, addr, af_propagate);
+new->prop.ignore_error = addr->prop.ignore_error;
new->prop.address_data = addr->prop.address_data;
+new->prop.variables = NULL;
+tree_dup((tree_node **)&new->prop.variables, addr->prop.variables);
new->dsn_flags = addr->dsn_flags;
new->dsn_orcpt = addr->dsn_orcpt;
+/************************************************/
+/* Add router-assigned variables
+Return OK/DEFER/FAIL/PASS */
+
+static int
+set_router_vars(address_item * addr, const router_instance * r)
+{
+const uschar * varlist = r->set;
+tree_node ** root = (tree_node **) &addr->prop.variables;
+int sep = 0;
+
+if (!varlist) return OK;
+
+/* Walk the varlist, creating variables */
+
+for (uschar * ele; (ele = string_nextinlist(&varlist, &sep, NULL, 0)); )
+ {
+ const uschar * assignment = ele;
+ int esep = '=';
+ uschar * name = string_nextinlist(&assignment, &esep, NULL, 0);
+ uschar * val;
+ tree_node * node;
+
+ /* Variable name must exist and start "r_". */
+
+ if (!name || name[0] != 'r' || name[1] != '_' || !name[2])
+ return FAIL;
+ name += 2;
+
+ while (isspace(*assignment)) assignment++;
+
+ if (!(val = expand_string(US assignment)))
+ if (f.expand_string_forcedfail)
+ {
+ int yield;
+ BOOL more;
+ DEBUG(D_route) debug_printf("forced failure in expansion of \"%s\" "
+ "(router variable): decline action taken\n", ele);
+
+ /* Expand "more" if necessary; DEFER => an expansion failed */
+
+ yield = exp_bool(addr, US"router", r->name, D_route,
+ US"more", r->more, r->expand_more, &more);
+ if (yield != OK) return yield;
+
+ if (!more)
+ {
+ DEBUG(D_route)
+ debug_printf("\"more\"=false: skipping remaining routers\n");
+ router_name = NULL;
+ r = NULL;
+ return FAIL;
+ }
+ return PASS;
+ }
+ else
+ {
+ addr->message = string_sprintf("expansion of \"%s\" failed "
+ "in %s router: %s", ele, r->name, expand_string_message);
+ return DEFER;
+ }
+
+ if (!(node = tree_search(*root, name)))
+ {
+ node = store_get(sizeof(tree_node) + Ustrlen(name));
+ Ustrcpy(node->name, name);
+ (void)tree_insertnode(root, node);
+ }
+ node->data.ptr = US val;
+ DEBUG(D_route) debug_printf("set r_%s = '%s'\n", name, val);
+
+ /* All expansions after this point need visibility of that variable */
+ router_var = *root;
+ }
+return OK;
+}
+
+
/*************************************************
* Route one address *
*************************************************/
uschar *error;
struct passwd *pw = NULL;
struct passwd pwcopy;
- address_item *parent;
BOOL loop_detected = FALSE;
BOOL more;
int loopcount = 0;
/* There are some weird cases where logging is disabled */
- disable_logging = r->disable_logging;
+ f.disable_logging = r->disable_logging;
/* Record the last router to handle the address, and set the default
next router. */
by this router, even if it was different to the current address.
Just in case someone does put it into a loop (possible with redirection
- continally adding to an address, for example), put a long stop counter on
+ continually adding to an address, for example), put a long stop counter on
the number of parents. */
- for (parent = addr->parent; parent; parent = parent->parent)
+ for (address_item * parent = addr->parent; parent; parent = parent->parent)
{
if (parent->router == r)
{
search_error_message = NULL;
+ /* Add any variable-settings that are on the router, to the set on the
+ addr. Expansion is done here and not later when the addr is used. There may
+ be multiple settings, gathered during readconf; this code gathers them during
+ router traversal. On the addr string they are held as a variable tree, so
+ as to maintain the post-expansion taints separate. */
+
+ if ((yield = set_router_vars(addr, r)) != OK)
+ if (yield == PASS)
+ continue; /* with next router */
+ else
+ goto ROUTE_EXIT;
+
+#ifdef notdef
+ if (r->set)
+ {
+ const uschar * list = r->set;
+ int sep = 0;
+ for (uschar * ele; (ele = string_nextinlist(&list, &sep, NULL, 0)); )
+ {
+ uschar * ee;
+ if (!(ee = expand_string(ele)))
+ if (f.expand_string_forcedfail)
+ {
+ DEBUG(D_route) debug_printf("forced failure in expansion of \"%s\" "
+ "(router variable): decline action taken\n", ele);
+
+ /* Expand "more" if necessary; DEFER => an expansion failed */
+
+ yield = exp_bool(addr, US"router", r->name, D_route,
+ US"more", r->more, r->expand_more, &more);
+ if (yield != OK) goto ROUTE_EXIT;
+
+ if (!more)
+ {
+ DEBUG(D_route)
+ debug_printf("\"more\"=false: skipping remaining routers\n");
+ router_name = NULL;
+ r = NULL;
+ break;
+ }
+ else continue; /* With next router */
+ }
+ else
+ {
+ addr->message = string_sprintf("expansion of \"%s\" failed "
+ "in %s router: %s", ele, r->name, expand_string_message);
+ yield = DEFER;
+ goto ROUTE_EXIT;
+ }
+
+ addr->prop.set = string_append_listele(addr->prop.set, ':', ee);
+ }
+ }
+#endif
+
/* Finally, expand the address_data field in the router. Forced failure
behaves as if the router declined. Any other failure is more serious. On
success, the string is attached to the address for all subsequent processing.
if (r->address_data)
{
DEBUG(D_route) debug_printf("processing address_data\n");
- deliver_address_data = expand_string(r->address_data);
- if (!deliver_address_data)
+ if (!(deliver_address_data = expand_string(r->address_data)))
{
- if (expand_string_forcedfail)
+ if (f.expand_string_forcedfail)
{
DEBUG(D_route) debug_printf("forced failure in expansion of \"%s\" "
"(address_data): decline action taken\n", r->address_data);
pw = &pwcopy;
}
- /* Run the router, and handle the consequences. */
-
- /* ... but let us check on DSN before. If this should be the last hop for DSN
- set flag. */
+ /* If this should be the last hop for DSN flag the addr. */
if (r->dsn_lasthop && !(addr->dsn_flags & rf_dsnlasthop))
{
HDEBUG(D_route) debug_printf("DSN: last hop for %s\n", addr->address);
}
+ /* Run the router, and handle the consequences. */
+
HDEBUG(D_route) debug_printf("calling %s router\n", r->name);
yield = (r->info->code)(r, addr, pw, verify, paddr_local, paddr_remote,
uschar *expmessage = expand_string(addr->router->cannot_route_message);
if (!expmessage)
{
- if (!expand_string_forcedfail)
+ if (!f.expand_string_forcedfail)
log_write(0, LOG_MAIN|LOG_PANIC, "failed to expand "
"cannot_route_message in %s router: %s", addr->router->name,
expand_string_message);
{
int rc;
int old_pool = store_pool;
- host_item *h;
- for (h = addr->host_list; h; h = h->next)
+ for (host_item * h = addr->host_list; h; h = h->next)
{
uschar *newaddress;
uschar *oldaddress, *oldname;
if (!newaddress)
{
- if (expand_string_forcedfail) continue;
+ if (f.expand_string_forcedfail) continue;
addr->basic_errno = ERRNO_EXPANDFAIL;
addr->message = string_sprintf("translate_ip_address expansion "
"failed: %s", expand_string_message);
DEBUG(D_route)
{
- host_item *h;
-
debug_printf(" envelope to: %s\n", addr->address);
- debug_printf(" transport: %s\n", (addr->transport == NULL)?
- US"<none>" : addr->transport->name);
+ debug_printf(" transport: %s\n", addr->transport
+ ? addr->transport->name : US"<none>");
if (addr->prop.errors_address)
debug_printf(" errors to %s\n", addr->prop.errors_address);
- for (h = addr->host_list; h; h = h->next)
+ for (host_item * h = addr->host_list; h; h = h->next)
{
debug_printf(" host %s", h->name);
if (h->address) debug_printf(" [%s]", h->address);
deliver_set_expansions(NULL);
router_name = NULL;
-disable_logging = FALSE;
+f.disable_logging = FALSE;
return yield;
}
+#endif /*!MACRO_PREDEF*/
/* End of route.c */
projects / exim.git / blobdiff