{
int fd, rc;
fd_set fds;
-struct timeval tzero;
+struct timeval tzero = {.tv_sec = 0, .tv_usec = 0};
#ifndef DISABLE_TLS
if (tls_in.active.sock >= 0)
fd = fileno(smtp_in);
FD_ZERO(&fds);
FD_SET(fd, &fds);
-tzero.tv_sec = 0;
-tzero.tv_usec = 0;
rc = select(fd + 1, (SELECT_ARG2_TYPE *)&fds, NULL, NULL, &tzero);
if (rc <= 0) return TRUE; /* Not ready to read */
{
#ifndef DISABLE_DKIM
int n = smtp_inend - smtp_inptr;
+if (chunking_state == CHUNKING_LAST && chunking_data_left < n)
+ n = chunking_data_left;
if (n > 0)
dkim_exim_verify_feed(smtp_inptr, n);
#endif
acl_warn_logged = acl_warn_logged->next;
store_free(this);
}
+
+message_tidyup();
store_reset(reset_point);
+
+message_start();
return store_mark();
}
case MAIL_CMD:
smtp_mailcmd_count++; /* Count for no-mail log */
- if (sender_address != NULL)
+ if (sender_address)
/* The function moan_smtp_batch() does not return. */
moan_smtp_batch(smtp_cmd_buffer, "503 Sender already given");
if (smtp_batched_input) return TRUE;
/* If valid Proxy Protocol source is connecting, set up session.
- * Failure will not allow any SMTP function other than QUIT. */
+Failure will not allow any SMTP function other than QUIT. */
#ifdef SUPPORT_PROXY
proxy_session = FALSE;
setup_proxy_protocol_host();
#endif
- /* Start up TLS if tls_on_connect is set. This is for supporting the legacy
- smtps port for use with older style SSL MTAs. */
+/* Start up TLS if tls_on_connect is set. This is for supporting the legacy
+smtps port for use with older style SSL MTAs. */
#ifndef DISABLE_TLS
- if (tls_in.on_connect)
- {
- if (tls_server_start(&user_msg) != OK)
- return smtp_log_tls_fail(user_msg);
- cmd_list[CMD_LIST_TLS_AUTH].is_mail_cmd = TRUE;
- }
+if (tls_in.on_connect)
+ {
+ if (tls_server_start(&user_msg) != OK)
+ return smtp_log_tls_fail(user_msg);
+ cmd_list[CMD_LIST_TLS_AUTH].is_mail_cmd = TRUE;
+ }
#endif
/* Run the connect ACL if it exists */
uschar *smtp_code;
uschar *lognl;
uschar *sender_info = US"";
-uschar *what =
-#ifdef WITH_CONTENT_SCAN
- where == ACL_WHERE_MIME ? US"during MIME ACL checks" :
-#endif
- where == ACL_WHERE_PREDATA ? US"DATA" :
- where == ACL_WHERE_DATA ? US"after DATA" :
-#ifndef DISABLE_PRDR
- where == ACL_WHERE_PRDR ? US"after DATA PRDR" :
-#endif
- smtp_cmd_data ?
- string_sprintf("%s %s", acl_wherenames[where], smtp_cmd_data) :
- string_sprintf("%s in \"connect\" ACL", acl_wherenames[where]);
+uschar *what;
if (drop) rc = FAIL;
this is what should be logged, so I've changed to logging the unrewritten
address to retain backward compatibility. */
-#ifndef WITH_CONTENT_SCAN
-if (where == ACL_WHERE_RCPT || where == ACL_WHERE_DATA)
-#else
-if (where == ACL_WHERE_RCPT || where == ACL_WHERE_DATA || where == ACL_WHERE_MIME)
+switch (where)
+ {
+#ifdef WITH_CONTENT_SCAN
+ case ACL_WHERE_MIME: what = US"during MIME ACL checks"; break;
+#endif
+ case ACL_WHERE_PREDATA: what = US"DATA"; break;
+ case ACL_WHERE_DATA: what = US"after DATA"; break;
+#ifndef DISABLE_PRDR
+ case ACL_WHERE_PRDR: what = US"after DATA PRDR"; break;
#endif
+ default:
+ {
+ uschar * place = smtp_cmd_data ? smtp_cmd_data : US"in \"connect\" ACL";
+ int lim = 100;
+
+ if (where == ACL_WHERE_AUTH) /* avoid logging auth creds */
+ {
+ uschar * s;
+ for (s = smtp_cmd_data; *s && !isspace(*s); ) s++;
+ lim = s - smtp_cmd_data; /* atop after method */
+ }
+ what = string_sprintf("%s %.*s", acl_wherenames[where], lim, place);
+ }
+ }
+switch (where)
{
- sender_info = string_sprintf("F=<%s>%s%s%s%s ",
- sender_address_unrewritten ? sender_address_unrewritten : sender_address,
- sender_host_authenticated ? US" A=" : US"",
- sender_host_authenticated ? sender_host_authenticated : US"",
- sender_host_authenticated && authenticated_id ? US":" : US"",
- sender_host_authenticated && authenticated_id ? authenticated_id : US""
- );
+ case ACL_WHERE_RCPT:
+ case ACL_WHERE_DATA:
+#ifdef WITH_CONTENT_SCAN
+ case ACL_WHERE_MIME:
+#endif
+ sender_info = string_sprintf("F=<%s>%s%s%s%s ",
+ sender_address_unrewritten ? sender_address_unrewritten : sender_address,
+ sender_host_authenticated ? US" A=" : US"",
+ sender_host_authenticated ? sender_host_authenticated : US"",
+ sender_host_authenticated && authenticated_id ? US":" : US"",
+ sender_host_authenticated && authenticated_id ? authenticated_id : US""
+ );
+ break;
}
/* If there's been a sender verification failure with a specific message, and
smtp_printf("221 %s closing connection\r\n", FALSE, smtp_active_hostname);
#ifndef DISABLE_TLS
-tls_close(NULL, TLS_SHUTDOWN_NOWAIT);
+tls_close(NULL, TLS_SHUTDOWN_WAIT);
#endif
log_write(L_smtp_connection, LOG_MAIN, "%s closed by QUIT",
smtp_get_connection_info());
+
+/* Pause, hoping client will FIN first so that they get the TIME_WAIT.
+The socket should become readble (though with no data) */
+
+ {
+ int fd = fileno(smtp_in);
+ fd_set fds;
+ struct timeval t_limit = {.tv_sec = 0, .tv_usec = 200*1000};
+
+ FD_ZERO(&fds);
+ FD_SET(fd, &fds);
+ (void) select(fd + 1, (SELECT_ARG2_TYPE *)&fds, NULL, NULL, &t_limit);
+ }
}
}
+static int
+expand_mailmax(const uschar * s)
+{
+if (!(s = expand_cstring(s)))
+ log_write(0, LOG_MAIN|LOG_PANIC, "failed to expand smtp_accept_max_per_connection");
+return *s ? Uatoi(s) : 0;
+}
/*************************************************
* Initialize for SMTP incoming message *
smtp_setup_msg(void)
{
int done = 0;
+int mailmax = -1;
BOOL toomany = FALSE;
BOOL discarded = FALSE;
BOOL last_was_rej_mail = FALSE;
if (smtp_batched_input) return smtp_setup_batch_msg();
+#ifdef TCP_QUICKACK
+if (smtp_in) /* Avoid pure-ACKs while in cmd pingpong phase */
+ (void) setsockopt(fileno(smtp_in), IPPROTO_TCP, TCP_QUICKACK,
+ US &off, sizeof(off));
+#endif
+
/* Deal with SMTP commands. This loop is exited by setting done to a POSITIVE
value. The values are 2 larger than the required yield of the function. */
}
#endif
-#ifdef TCP_QUICKACK
- if (smtp_in) /* Avoid pure-ACKs while in cmd pingpong phase */
- (void) setsockopt(fileno(smtp_in), IPPROTO_TCP, TCP_QUICKACK,
- US &off, sizeof(off));
-#endif
-
switch(smtp_read_command(
#ifndef DISABLE_PIPE_CONNECT
!fl.pipe_connect_acceptable,
/* Find the name of the requested authentication mechanism. */
s = smtp_cmd_data;
- while ((c = *smtp_cmd_data) != 0 && !isspace(c))
- {
+ for (; (c = *smtp_cmd_data) && !isspace(c); smtp_cmd_data++)
if (!isalnum(c) && c != '-' && c != '_')
{
done = synprot_error(L_smtp_syntax_error, 501, NULL,
US"invalid character in authentication mechanism name");
goto COMMAND_LOOP;
}
- smtp_cmd_data++;
- }
/* If not at the end of the line, we must be at white space. Terminate the
name and move the pointer on to any data that may be present. */
- if (*smtp_cmd_data != 0)
+ if (*smtp_cmd_data)
{
*smtp_cmd_data++ = 0;
while (isspace(*smtp_cmd_data)) smtp_cmd_data++;
fl.smtputf8_advertised = FALSE;
#endif
+ /* Expand the per-connection message count limit option */
+ mailmax = expand_mailmax(smtp_accept_max_per_connection);
+
smtp_code = US"250 "; /* Default response code plus space*/
if (!user_msg)
{
case MAIL_CMD:
HAD(SCH_MAIL);
smtp_mailcmd_count++; /* Count for limit and ratelimit */
+ message_start();
was_rej_mail = TRUE; /* Reset if accepted */
env_mail_type_t * mail_args; /* Sanity check & validate args */
- if (fl.helo_required && !fl.helo_seen)
- {
- smtp_printf("503 HELO or EHLO required\r\n", FALSE);
- log_write(0, LOG_MAIN|LOG_REJECT, "rejected MAIL from %s: no "
- "HELO/EHLO given", host_and_ident(FALSE));
- break;
- }
+ if (!fl.helo_seen)
+ if (fl.helo_required)
+ {
+ smtp_printf("503 HELO or EHLO required\r\n", FALSE);
+ log_write(0, LOG_MAIN|LOG_REJECT, "rejected MAIL from %s: no "
+ "HELO/EHLO given", host_and_ident(FALSE));
+ break;
+ }
+ else if (mailmax < 0)
+ mailmax = expand_mailmax(smtp_accept_max_per_connection);
if (sender_address)
{
/* Check to see if the limit for messages per connection would be
exceeded by accepting further messages. */
- if (smtp_accept_max_per_connection > 0 &&
- smtp_mailcmd_count > smtp_accept_max_per_connection)
+ if (mailmax > 0 && smtp_mailcmd_count > mailmax)
{
smtp_printf("421 too many messages in this connection\r\n", FALSE);
log_write(0, LOG_MAIN|LOG_REJECT, "rejected MAIL command %s: too many "
git://git.exim.org / exim.git / blobdiff