*************************************************/
/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
#include "../exim.h"
{ "lmtp_ignore_quota", opt_bool, LOFF(lmtp_ignore_quota) },
{ "max_rcpt", opt_int | opt_public,
OPT_OFF(transport_instance, max_addresses) },
+ { "message_linelength_limit", opt_int, LOFF(message_linelength_limit) },
{ "multi_domain", opt_expand_bool | opt_public,
OPT_OFF(transport_instance, multi_domain) },
{ "port", opt_stringptr, LOFF(port) },
{ "tls_dh_min_bits", opt_int, LOFF(tls_dh_min_bits) },
{ "tls_privatekey", opt_stringptr, LOFF(tls_privatekey) },
{ "tls_require_ciphers", opt_stringptr, LOFF(tls_require_ciphers) },
-# ifdef EXPERIMENTAL_TLS_RESUME
+# ifndef DISABLE_TLS_RESUME
{ "tls_resumption_hosts", opt_stringptr, LOFF(tls_resumption_hosts) },
# endif
{ "tls_sni", opt_stringptr, LOFF(tls_sni) },
.size_addition = 1024,
.hosts_max_try = 5,
.hosts_max_try_hardlimit = 50,
+ .message_linelength_limit = 998,
.address_retry_include_sender = TRUE,
.allow_localhost = FALSE,
.authenticated_sender_force = FALSE,
.tls_verify_certificates = US"system",
.tls_dh_min_bits = EXIM_CLIENT_DH_DEFAULT_MIN_BITS,
.tls_tempfail_tryclear = TRUE,
-# ifdef EXPERIMENTAL_TLS_RESUME
+# ifndef DISABLE_TLS_RESUME
.tls_resumption_hosts = NULL,
# endif
.tls_verify_hosts = NULL,
.tls_verify_cert_hostnames = US"*",
#endif
#ifdef SUPPORT_I18N
- .utf8_downconvert = NULL,
+ .utf8_downconvert = US"-1",
#endif
#ifndef DISABLE_DKIM
.dkim =
{
smtp_transport_options_block *ob = SOB tblock->options_block;
-errmsg = errmsg; /* Keep picky compilers happy */
-uid = uid;
-gid = gid;
-
/* Pass back options if required. This interface is getting very messy. */
if (tf)
for (au = auths, authnum = 0; au; au = au->next, authnum++) if (au->client)
{
const uschar * list = names;
- int sep = ' ';
- uschar name[32];
-
- while (string_nextinlist(&list, &sep, name, sizeof(name)))
- if (strcmpic(au->public_name, name) == 0)
+ uschar * s;
+ for (int sep = ' '; s = string_nextinlist(&list, &sep, NULL, 0); )
+ if (strcmpic(au->public_name, s) == 0)
{ authbits |= BIT(authnum); break; }
}
if (require_auth == OK && !f.smtp_authenticated)
{
+ invalidate_ehlo_cache_entry(sx);
set_errno_nohost(sx->addrlist, ERRNO_AUTHFAIL,
string_sprintf("authentication required but %s", fail_reason), DEFER,
FALSE, &sx->delivery_start);
smtp_local_identity(s_compare->current_sender_address, s_compare->tblock);
if (!(new_sender_address = deliver_get_sender_address(message_id)))
- return 0;
+ return FALSE;
message_local_identity =
smtp_local_identity(new_sender_address, s_compare->tblock);
tls_out.sni = NULL;
#endif
tls_out.ocsp = OCSP_NOT_REQ;
-#ifdef EXPERIMENTAL_TLS_RESUME
+#ifndef DISABLE_TLS_RESUME
tls_out.resumption = 0;
#endif
tls_out.ver = NULL;
else DEBUG(D_transport)
debug_printf("helo needs $sending_ip_address\n");
+PIPE_CONNECT_RETRY:
if (sx->early_pipe_active)
sx->outblock.conn_args = &sx->conn_args;
else
{
HDEBUG(D_transport)
debug_printf("failed reaping pipelined cmd responses\n");
- goto RESPONSE_FAILED;
+ close(sx->cctx.sock);
+ sx->cctx.sock = -1;
+ sx->early_pipe_active = FALSE;
+ goto PIPE_CONNECT_RETRY;
}
#endif
/* TLS negotiation failed; give an error. From outside, this function may
be called again to try in clear on a new connection, if the options permit
it for this host. */
-#ifdef USE_GNUTLS
- GNUTLS_CONN_FAILED:
-#endif
+ TLS_CONN_FAILED:
DEBUG(D_tls) debug_printf("TLS session fail: %s\n", tls_errstr);
# ifdef SUPPORT_DANE
goto TLS_FAILED;
}
- /* TLS session is set up */
+ /* TLS session is set up. Check the inblock fill level. If there is
+ content then as we have not yet done a tls read it must have arrived before
+ the TLS handshake, in-clear. That violates the sync requirement of the
+ STARTTLS RFC, so fail. */
+
+ if (sx->inblock.ptr != sx->inblock.ptrend)
+ {
+ DEBUG(D_tls)
+ {
+ int i = sx->inblock.ptrend - sx->inblock.ptr;
+ debug_printf("unused data in input buffer after ack for STARTTLS:\n"
+ "'%.*s'%s\n",
+ i > 100 ? 100 : i, sx->inblock.ptr, i > 100 ? "..." : "");
+ }
+ tls_errstr = US"synch error before connect";
+ goto TLS_CONN_FAILED;
+ }
smtp_peer_options_wrap = smtp_peer_options;
for (address_item * addr = sx->addrlist; addr; addr = addr->next)
Can it do that, with all the flexibility we need? */
tls_errstr = US"error on first read";
- goto GNUTLS_CONN_FAILED;
+ goto TLS_CONN_FAILED;
}
#else
goto RESPONSE_FAILED;
int rc, i;
close(pfd[1]);
-if ((rc = fork()))
- {
- DEBUG(D_transport) debug_printf("proxy-proc final-pid %d\n", rc);
+if ((rc = exim_fork(US"tls-proxy")))
_exit(rc < 0 ? EXIT_FAILURE : EXIT_SUCCESS);
- }
-testharness_pause_ms(100); /* let parent debug out */
set_process_info("proxying TLS connection for continued transport");
FD_ZERO(&rfds);
FD_SET(tls_out.active.sock, &rfds);
done:
testharness_pause_ms(100); /* let logging complete */
- exim_exit(0, US"TLS proxy");
+ exim_exit(EXIT_SUCCESS);
}
#endif
uschar new_message_id[MESSAGE_ID_LENGTH + 1];
smtp_context * sx = store_get(sizeof(*sx), TRUE); /* tainted, for the data buffers */
-suppress_tls = suppress_tls; /* stop compiler warning when no TLS support */
*message_defer = FALSE;
memset(sx, 0, sizeof(*sx));
}
/* If there is a filter command specified for this transport, we can now
-set it up. This cannot be done until the identify of the host is known. */
+set it up. This cannot be done until the identity of the host is known. */
if (tblock->filter_command)
{
#ifndef DISABLE_TLS
if (tls_out.active.sock >= 0)
{
- int pid = fork();
+ int pid = exim_fork(US"tls-proxy-interproc");
if (pid == 0) /* child; fork again to disconnect totally */
{
- testharness_pause_ms(100); /* let parent debug out */
/* does not return */
smtp_proxy_tls(sx->cctx.tls_ctx, sx->buffer, sizeof(sx->buffer), pfd,
ob->command_timeout);
if (pid > 0) /* parent */
{
- DEBUG(D_transport) debug_printf("proxy-proc inter-pid %d\n", pid);
close(pfd[0]);
/* tidy the inter-proc to disconn the proxy proc */
waitpid(pid, NULL, 0);
cutthrough.cctx.sock >= 0 ? cutthrough.cctx.sock : 0);
}
+/* Check the restrictions on line length */
+
+if (max_received_linelength > ob->message_linelength_limit)
+ {
+ struct timeval now;
+ gettimeofday(&now, NULL);
+
+ for (address_item * addr = addrlist; addr; addr = addr->next)
+ if (addr->transport_return == DEFER)
+ addr->transport_return = PENDING_DEFER;
+
+ set_errno_nohost(addrlist, ERRNO_SMTPFORMAT,
+ US"message has lines too long for transport", FAIL, TRUE, &now);
+ goto END_TRANSPORT;
+ }
+
/* Set the flag requesting that these hosts be added to the waiting
database if the delivery fails temporarily or if we are running with
queue_smtp or a 2-stage queue run. This gets unset for certain
#ifndef DISABLE_EVENT
/* If the last host gave a defer raise a per-message event */
- if (!nexthost && (message_defer || rc == DEFER))
+ if ( !( nexthost
+ && unexpired_hosts_tried < ob->hosts_max_try
+ && total_hosts_tried < ob->hosts_max_try_hardlimit
+ )
+ && (message_defer || rc == DEFER)
+ )
deferred_event_raise(first_addr, host, US"msg:defer");
#endif
}
git://git.exim.org / exim.git / blobdiff