* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2016 */
+/* Copyright (c) University of Cambridge 1995 - 2017 */
/* See the file NOTICE for conditions of use and distribution. */
/* Functions concerned with running Exim as a daemon */
} smtp_slot;
/* An empty slot for initializing (Standard C does not allow constructor
-expressions in assigments except as initializers in declarations). */
+expressions in assignments except as initializers in declarations). */
static smtp_slot empty_smtp_slot = { 0, NULL };
int other_host_count = 0; /* keep a count of non matches to optimise */
for (i = 0; i < smtp_accept_max; ++i)
- if (smtp_slots[i].host_address != NULL)
+ if (smtp_slots[i].host_address)
{
if (Ustrcmp(sender_host_address, smtp_slots[i].host_address) == 0)
host_accept_count++;
search_tidyup(); /* Close cached databases */
if (!ok) /* Connection was dropped */
{
+ cancel_cutthrough_connection(TRUE, US"receive dropped");
mac_smtp_fflush();
smtp_log_no_mail(); /* Log no mail if configured */
_exit(EXIT_SUCCESS);
{
if (smtp_out)
{
- int i;
+ int i, fd = fileno(smtp_in);
uschar buf[128];
mac_smtp_fflush();
/* drain socket, for clean TCP FINs */
- for(i = 16; read(fileno(smtp_in), buf, sizeof(buf)) > 0 && i > 0; ) i--;
+ if (fcntl(fd, F_SETFL, O_NONBLOCK) == 0)
+ for(i = 16; read(fd, buf, sizeof(buf)) > 0 && i > 0; ) i--;
}
+ cancel_cutthrough_connection(TRUE, US"message setup dropped");
search_tidyup();
smtp_log_no_mail(); /* Log no mail if configured */
DEBUG(D_receive)
{
int i;
- if (sender_address != NULL)
+ if (sender_address)
debug_printf("Sender: %s\n", sender_address);
- if (recipients_list != NULL)
+ if (recipients_list)
{
debug_printf("Recipients:\n");
for (i = 0; i < recipients_count; i++)
/* Reclaim up the store used in accepting this message */
+ return_path = sender_address = NULL;
+ authenticated_sender = NULL;
+ sending_ip_address = NULL;
+ deliver_host_address = deliver_host =
+ deliver_domain_orig = deliver_localpart_orig = NULL;
+ dnslist_domain = dnslist_matched = NULL;
+ callout_address = NULL;
+#ifndef DISABLE_DKIM
+ dkim_cur_signer = NULL;
+#endif
+ acl_var_m = NULL;
store_reset(reset_point);
/* If queue_only is set or if there are too many incoming connections in
/* Don't ever molest the parent's SSL connection, but do clean up
the data structures if necessary. */
- #ifdef SUPPORT_TLS
+#ifdef SUPPORT_TLS
tls_close(TRUE, FALSE);
- #endif
+#endif
/* Reset SIGHUP and SIGCHLD in the child in both cases. */
if (geteuid() != root_uid && !deliver_drop_privilege)
{
signal(SIGALRM, SIG_DFL);
- (void)child_exec_exim(CEE_EXEC_PANIC, FALSE, NULL, FALSE,
- 2, US"-Mc", message_id);
+ delivery_re_exec(CEE_EXEC_PANIC);
/* Control does not return here. */
}
/* No need to re-exec; SIGALRM remains set to the default handler */
- (void)deliver_message(message_id, FALSE, FALSE);
+ (void) deliver_message(message_id, FALSE, FALSE);
search_tidyup();
_exit(EXIT_SUCCESS);
}
if (dpid > 0)
{
+ release_cutthrough_connection(US"passed for delivery");
DEBUG(D_any) debug_printf("forked delivery process %d\n", (int)dpid);
}
else
+ {
+ cancel_cutthrough_connection(TRUE, US"delivery fork failed");
log_write(0, LOG_MAIN|LOG_PANIC, "daemon: delivery process fork "
"failed: %s", strerror(errno));
+ }
}
}
}
the incoming host address and an expanded active_hostname. */
log_close_all();
+interface_address =
+sender_host_address = NULL;
store_reset(reset_point);
sender_host_address = NULL;
}
/* If it's a listening daemon for which we are keeping track of individual
subprocesses, deal with an accepting process that has terminated. */
- if (smtp_slots != NULL)
+ if (smtp_slots)
{
for (i = 0; i < smtp_accept_max; i++)
- {
if (smtp_slots[i].pid == pid)
{
- if (smtp_slots[i].host_address != NULL)
+ if (smtp_slots[i].host_address)
store_free(smtp_slots[i].host_address);
smtp_slots[i] = empty_smtp_slot;
if (--smtp_accept_count < 0) smtp_accept_count = 0;
smtp_accept_count, (smtp_accept_count == 1)? "" : "es");
break;
}
- }
if (i < smtp_accept_max) continue; /* Found an accepting process */
}
}
/* Create a list of default SMTP ports, to be used if local_interfaces
- contains entries without explict ports. First count the number of ports, then
+ contains entries without explicit ports. First count the number of ports, then
build a translated list in a vector. */
list = daemon_smtp_port;
necessary for (some release of) USAGI Linux; other IP stacks fail at the
listen() stage instead. */
+#ifdef TCP_FASTOPEN
+ tcp_fastopen_ok = TRUE;
+#endif
for(;;)
{
uschar *msg, *addr;
#ifdef TCP_FASTOPEN
if (setsockopt(listen_sockets[sk], IPPROTO_TCP, TCP_FASTOPEN,
&smtp_connect_backlog, sizeof(smtp_connect_backlog)))
- DEBUG(D_any) debug_printf("setsockopt FASTOPEN: %s", strerror(errno));
+ {
+ DEBUG(D_any) debug_printf("setsockopt FASTOPEN: %s\n", strerror(errno));
+ tcp_fastopen_ok = FALSE;
+ }
#endif
/* Start listening on the bound socket, establishing the maximum backlog of
}
else if (ipa->address[0] == 0)
(void)sprintf(CS p, " port %d (IPv4)", ipa->port);
+ else if ( i > 0
+ && host_is_tls_on_connect_port(ipa[-1].port) == (j > 0)
+ && Ustrcmp(ipa->address, ipa[-1].address) == 0
+ )
+ {
+ if (p[-1] == '}') p--;
+ while (isdigit(*--p)) ;
+ (void)sprintf(CS p+1, "%s%d,%d}", *p == ',' ? "" : "{",
+ ipa[-1].port, ipa->port);
+ }
else
(void)sprintf(CS p, " [%s]:%d", ipa->address, ipa->port);
while (*p != 0) p++;
errno = EINTR;
}
else
- {
lcount = select(max_socket + 1, (SELECT_ARG2_TYPE *)&select_listen,
NULL, NULL, NULL);
- }
if (lcount < 0)
{
while (lcount-- > 0)
{
int accept_socket = -1;
+
if (!select_failed)
- {
for (sk = 0; sk < listen_socket_count; sk++)
- {
if (FD_ISSET(listen_sockets[sk], &select_listen))
{
len = sizeof(accepted);
FD_CLR(listen_sockets[sk], &select_listen);
break;
}
- }
- }
/* If select or accept has failed and this was not caused by an
interruption, log the incident and try again. With asymmetric TCP/IP
git://git.exim.org / users / jgh / exim.git / blobdiff