* 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
void
options_routers(void)
{
-struct router_info * ri;
uschar buf[64];
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++)
{
spf(buf, sizeof(buf), US"_DRIVER_ROUTER_%T", ri->driver_name);
builtin_macro_create(buf);
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);
TRUE; otherwise its default is FALSE. */
if (r->retry_use_local_part == TRUE_UNSET)
- r->retry_use_local_part = r->check_local_user;
+ r->retry_use_local_part =
+ r->check_local_user || r->local_parts || r->condition || r->prefix || r->suffix || r->senders || r->require_files;
/* Build a host list if fallback hosts is set. */
/* 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;
{
exim_setugid(uid, gid, TRUE,
string_sprintf("require_files check, file=%s", ss));
- if (route_check_access(ss, uid, gid, 4)) _exit(0);
+ if (route_check_access(ss, uid, gid, 4))
+ exim_underbar_exit(0);
DEBUG(D_route) debug_printf("route_check_access() failed\n");
- _exit(1);
+ exim_underbar_exit(1);
}
/* In the parent, wait for the child to finish */
while (waitpid(pid, &status, 0) < 0)
- {
if (errno != EINTR) /* unexpected error, interpret as failure */
{
status = 1;
break;
}
- }
signal(SIGCHLD, oldsignal); /* restore */
if ((status == 0) == invert) return SKIP;
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);
login of a local user. Note: the third argument to route_finduser() must be
NULL here, to prevent a numeric string being taken as a numeric uid. If the
user is found, set deliver_home to the home directory, and also set
-local_user_{uid,gid}. */
+local_user_{uid,gid} and local_part_verified. */
if (r->check_local_user)
{
r->name, addr->local_part);
return SKIP;
}
+ deliver_localpart_verified = string_copy(US (*pw)->pw_name);
deliver_home = string_copy(US (*pw)->pw_dir);
local_user_gid = (*pw)->pw_gid;
local_user_uid = (*pw)->pw_uid;
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,
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);
BOOL cache_set = (Ustrcmp(lastname, s) == 0);
DEBUG(D_uid) debug_printf("seeking password data for user \"%s\": %s\n", s,
- cache_set? "using cached result" : "cache not available");
+ cache_set ? "using cached result" : "cache not available");
if (!cache_set)
{
return TRUE;
}
- (void)string_format(lastname, sizeof(lastname), "%s", s);
+ string_format_nt(lastname, sizeof(lastname), "%s", s);
/* Force failure if string length is greater than given maximum */
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 = ';';
+
+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])
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "bad router variable name '%s' in router '%s'\n", name, r->name);
+ 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)))
+ { /* name should never be tainted */
+ node = store_get(sizeof(tree_node) + Ustrlen(name), FALSE);
+ Ustrcpy(node->name, name);
+ (void)tree_insertnode(root, node);
+ }
+ node->data.ptr = US val;
+ DEBUG(D_route) debug_printf("set r_%s%s = '%s'%s\n",
+ name, is_tainted(name)?" (tainted)":"",
+ val, is_tainted(val)?" (tainted)":"");
+
+ /* 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. */
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)
{
the local part sorted. */
router_name = r->name;
+ deliver_localpart_verified = NULL;
deliver_set_expansions(addr);
/* For convenience, the pre-router checks are in a separate function, which
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. */
+
+ switch (set_router_vars(addr, r))
+ {
+ case OK: break;
+ case PASS: continue; /* with next router */
+ default: goto ROUTE_EXIT;
+ }
+
/* 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,
/* If succeeded while verifying but fail_verify is set, convert into
a failure, and take it off the local or remote delivery list. */
- if (((verify == v_sender && r->fail_verify_sender) ||
- (verify == v_recipient && r->fail_verify_recipient)) &&
- (yield == OK || yield == PASS))
+ if ( ( verify == v_sender && r->fail_verify_sender
+ || verify == v_recipient && r->fail_verify_recipient
+ )
+ && (yield == OK || yield == PASS))
{
addr->message = string_sprintf("%s router forced verify failure", r->name);
if (*paddr_remote == addr) *paddr_remote = addr->next;
HDEBUG(D_route)
{
debug_printf("%s router %s for %s\n", r->name,
- (yield == PASS)? "passed" : "declined", addr->address);
+ yield == PASS ? "passed" : "declined", addr->address);
if (Ustrcmp(old_domain, addr->domain) != 0)
debug_printf("domain %s rewritten\n", old_domain);
}
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);
if (yield == DEFER)
{
- HDEBUG(D_route)
- {
- debug_printf("%s router: defer for %s\n", r->name, addr->address);
- debug_printf(" message: %s\n", (addr->message == NULL)?
- US"<none>" : addr->message);
- }
+ HDEBUG(D_route) debug_printf("%s router: defer for %s\n message: %s\n",
+ r->name, addr->address, addr->message ? addr->message : US"<none>");
goto ROUTE_EXIT;
}
{
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;
}
git://git.exim.org / users / jgh / exim.git / blobdiff