* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2017 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
#include "../exim.h"
#include "smtp.h"
+#if defined(SUPPORT_DANE) && defined(DISABLE_TLS)
+# error TLS is required for DANE
+#endif
+
/* Options specific to the smtp transport. This transport also supports LMTP
over TCP/IP. The options must be in alphabetic order (note that "_" comes
(void *)offsetof(smtp_transport_options_block, address_retry_include_sender) },
{ "allow_localhost", opt_bool,
(void *)offsetof(smtp_transport_options_block, allow_localhost) },
+#ifdef EXPERIMENTAL_ARC
+ { "arc_sign", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, arc_sign) },
+#endif
{ "authenticated_sender", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, authenticated_sender) },
{ "authenticated_sender_force", opt_bool,
(void *)offsetof(smtp_transport_options_block, connect_timeout) },
{ "connection_max_messages", opt_int | opt_public,
(void *)offsetof(transport_instance, connection_max_messages) },
+# ifdef SUPPORT_DANE
+ { "dane_require_tls_ciphers", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dane_require_tls_ciphers) },
+# endif
{ "data_timeout", opt_time,
(void *)offsetof(smtp_transport_options_block, data_timeout) },
{ "delay_after_cutoff", opt_bool,
(void *)offsetof(smtp_transport_options_block, dkim.dkim_sign_headers) },
{ "dkim_strict", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, dkim.dkim_strict) },
+ { "dkim_timestamps", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dkim.dkim_timestamps) },
#endif
{ "dns_qualify_single", opt_bool,
(void *)offsetof(smtp_transport_options_block, dns_qualify_single) },
(void *)offsetof(smtp_transport_options_block, hosts_avoid_esmtp) },
{ "hosts_avoid_pipelining", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_avoid_pipelining) },
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
{ "hosts_avoid_tls", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_avoid_tls) },
#endif
(void *)offsetof(smtp_transport_options_block, hosts_max_try) },
{ "hosts_max_try_hardlimit", opt_int,
(void *)offsetof(smtp_transport_options_block, hosts_max_try_hardlimit) },
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
{ "hosts_nopass_tls", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_nopass_tls) },
{ "hosts_noproxy_tls", opt_stringptr,
#endif
{ "hosts_override", opt_bool,
(void *)offsetof(smtp_transport_options_block, hosts_override) },
+#ifndef DISABLE_PIPE_CONNECT
+ { "hosts_pipe_connect", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_pipe_connect) },
+#endif
{ "hosts_randomize", opt_bool,
(void *)offsetof(smtp_transport_options_block, hosts_randomize) },
-#if defined(SUPPORT_TLS) && !defined(DISABLE_OCSP)
+#if !defined(DISABLE_TLS) && !defined(DISABLE_OCSP)
{ "hosts_request_ocsp", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_request_ocsp) },
#endif
{ "hosts_require_auth", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_require_auth) },
-#ifdef SUPPORT_TLS
-# ifdef EXPERIMENTAL_DANE
+#ifndef DISABLE_TLS
+# ifdef SUPPORT_DANE
{ "hosts_require_dane", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_require_dane) },
# endif
(void *)offsetof(smtp_transport_options_block, hosts_try_auth) },
{ "hosts_try_chunking", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_try_chunking) },
-#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
+#ifdef SUPPORT_DANE
{ "hosts_try_dane", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_try_dane) },
#endif
{ "hosts_try_prdr", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_try_prdr) },
#endif
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
{ "hosts_verify_avoid_tls", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_verify_avoid_tls) },
#endif
{ "serialize_hosts", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, serialize_hosts) },
{ "size_addition", opt_int,
- (void *)offsetof(smtp_transport_options_block, size_addition) }
+ (void *)offsetof(smtp_transport_options_block, size_addition) },
#ifdef SUPPORT_SOCKS
- ,{ "socks_proxy", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, socks_proxy) }
+ { "socks_proxy", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, socks_proxy) },
#endif
-#ifdef SUPPORT_TLS
- ,{ "tls_certificate", opt_stringptr,
+#ifndef DISABLE_TLS
+ { "tls_certificate", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_certificate) },
{ "tls_crl", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_crl) },
(void *)offsetof(smtp_transport_options_block, tls_privatekey) },
{ "tls_require_ciphers", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_require_ciphers) },
+# ifdef EXPERIMENTAL_TLS_RESUME
+ { "tls_resumption_hosts", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, tls_resumption_hosts) },
+# endif
{ "tls_sni", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_sni) },
{ "tls_tempfail_tryclear", opt_bool,
{ "tls_verify_certificates", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_verify_certificates) },
{ "tls_verify_hosts", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, tls_verify_hosts) }
+ (void *)offsetof(smtp_transport_options_block, tls_verify_hosts) },
+#endif
+#ifdef SUPPORT_I18N
+ { "utf8_downconvert", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, utf8_downconvert) },
#endif
};
/* Size of the options list. An extern variable has to be used so that its
address can appear in the tables drtables.c. */
-int smtp_transport_options_count =
- sizeof(smtp_transport_options)/sizeof(optionlist);
+int smtp_transport_options_count = nelem(smtp_transport_options);
#ifdef MACRO_PREDEF
.fallback_hosts = NULL,
.hostlist = NULL,
.fallback_hostlist = NULL,
- .authenticated_sender = NULL,
.helo_data = US"$primary_hostname",
.interface = NULL,
.port = NULL,
.hosts_try_auth = NULL,
.hosts_require_auth = NULL,
.hosts_try_chunking = US"*",
-#ifdef EXPERIMENTAL_DANE
- .hosts_try_dane = NULL,
+#ifdef SUPPORT_DANE
+ .hosts_try_dane = US"*",
.hosts_require_dane = NULL,
+ .dane_require_tls_ciphers = NULL,
#endif
- .hosts_try_fastopen = NULL,
+ .hosts_try_fastopen = US"*",
#ifndef DISABLE_PRDR
.hosts_try_prdr = US"*",
#endif
.hosts_avoid_tls = NULL,
.hosts_verify_avoid_tls = NULL,
.hosts_avoid_pipelining = NULL,
+#ifndef DISABLE_PIPE_CONNECT
+ .hosts_pipe_connect = NULL,
+#endif
.hosts_avoid_esmtp = NULL,
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
.hosts_nopass_tls = NULL,
- .hosts_noproxy_tls = US"*",
+ .hosts_noproxy_tls = NULL,
#endif
.command_timeout = 5*60,
.connect_timeout = 5*60,
#ifdef SUPPORT_SOCKS
.socks_proxy = NULL,
#endif
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
.tls_certificate = NULL,
.tls_crl = NULL,
.tls_privatekey = NULL,
.tls_verify_certificates = US"system",
.tls_dh_min_bits = EXIM_CLIENT_DH_DEFAULT_MIN_BITS,
.tls_tempfail_tryclear = TRUE,
+# ifdef EXPERIMENTAL_TLS_RESUME
+ .tls_resumption_hosts = NULL,
+# endif
.tls_verify_hosts = NULL,
.tls_try_verify_hosts = US"*",
.tls_verify_cert_hostnames = US"*",
#endif
+#ifdef SUPPORT_I18N
+ .utf8_downconvert = NULL,
+#endif
#ifndef DISABLE_DKIM
.dkim =
{.dkim_domain = NULL,
.dkim_sign_headers = NULL,
.dkim_strict = NULL,
.dkim_hash = US"sha256",
- .dot_stuffed = FALSE},
+ .dkim_timestamps = NULL,
+ .dot_stuffed = FALSE,
+ .force_bodyhash = FALSE,
+# ifdef EXPERIMENTAL_ARC
+ .arc_signspec = NULL,
+# endif
+ },
+# ifdef EXPERIMENTAL_ARC
+ .arc_sign = NULL,
+# endif
#endif
};
static BOOL pipelining_active; /* current transaction is in pipe mode */
+static unsigned ehlo_response(uschar * buf, unsigned checks);
+
+
+/******************************************************************************/
+
+void
+smtp_deliver_init(void)
+{
+if (!regex_PIPELINING) regex_PIPELINING =
+ regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE);
+
+if (!regex_SIZE) regex_SIZE =
+ regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE);
+
+if (!regex_AUTH) regex_AUTH =
+ regex_must_compile(AUTHS_REGEX, FALSE, TRUE);
+
+#ifndef DISABLE_TLS
+if (!regex_STARTTLS) regex_STARTTLS =
+ regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE);
+#endif
+
+if (!regex_CHUNKING) regex_CHUNKING =
+ regex_must_compile(US"\\n250[\\s\\-]CHUNKING(\\s|\\n|$)", FALSE, TRUE);
+
+#ifndef DISABLE_PRDR
+if (!regex_PRDR) regex_PRDR =
+ regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE);
+#endif
+
+#ifdef SUPPORT_I18N
+if (!regex_UTF8) regex_UTF8 =
+ regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE);
+#endif
+
+if (!regex_DSN) regex_DSN =
+ regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE);
+
+if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA =
+ regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
+
+#ifndef DISABLE_PIPE_CONNECT
+if (!regex_EARLY_PIPE) regex_EARLY_PIPE =
+ regex_must_compile(US"\\n250[\\s\\-]" EARLY_PIPE_FEATURE_NAME "(\\s|\\n|$)", FALSE, TRUE);
+#endif
+}
+
+
/*************************************************
* Setup entry point *
*************************************************/
smtp_transport_setup(transport_instance *tblock, address_item *addrlist,
transport_feedback *tf, uid_t uid, gid_t gid, uschar **errmsg)
{
-smtp_transport_options_block *ob =
- (smtp_transport_options_block *)(tblock->options_block);
+smtp_transport_options_block *ob = SOB tblock->options_block;
errmsg = errmsg; /* Keep picky compilers happy */
uid = uid;
void
smtp_transport_init(transport_instance *tblock)
{
-smtp_transport_options_block *ob =
- (smtp_transport_options_block *)(tblock->options_block);
+smtp_transport_options_block *ob = SOB tblock->options_block;
/* Retry_use_local_part defaults FALSE if unset */
/* Set the default port according to the protocol */
-if (ob->port == NULL)
- ob->port = (strcmpic(ob->protocol, US"lmtp") == 0)? US"lmtp" :
- (strcmpic(ob->protocol, US"smtps") == 0)? US"smtps" : US"smtp";
+if (!ob->port)
+ ob->port = strcmpic(ob->protocol, US"lmtp") == 0
+ ? US"lmtp"
+ : strcmpic(ob->protocol, US"smtps") == 0
+ ? US"smtps" : US"smtp";
/* Set up the setup entry point, to be called before subprocesses for this
transport. */
#endif
)
{
-address_item *addr;
int orvalue = 0;
if (errno_value == ERRNO_CONNECTTIMEOUT)
{
errno_value = ETIMEDOUT;
orvalue = RTEF_CTOUT;
}
-for (addr = addrlist; addr; addr = addr->next)
+for (address_item * addr = addrlist; addr; addr = addr->next)
if (addr->transport_return >= PENDING)
{
addr->basic_errno = errno_value;
pl, smtp_command, s);
return FALSE;
+ case ERRNO_TLSFAILURE: /* Handle bad first read; can happen with
+ GnuTLS and TLS1.3 */
+ *message = US"bad first read from TLS conn";
+ return TRUE;
+
case ERRNO_FILTER_FAIL: /* Handle a failed filter process error;
can't send QUIT as we mustn't end the DATA. */
*message = string_sprintf("transport filter process failed (%d)%s",
return FALSE;
case ERRNO_WRITEINCOMPLETE: /* failure to write a complete data block */
- *message = string_sprintf("failed to write a data block");
+ *message = US"failed to write a data block";
return FALSE;
#ifdef SUPPORT_I18N
static void
write_logs(const host_item *host, const uschar *suffix, int basic_errno)
{
-
-
-uschar *message = LOGGING(outgoing_port)
- ? string_sprintf("H=%s [%s]:%d", host->name, host->address,
+gstring * message = LOGGING(outgoing_port)
+ ? string_fmt_append(NULL, "H=%s [%s]:%d", host->name, host->address,
host->port == PORT_NONE ? 25 : host->port)
- : string_sprintf("H=%s [%s]", host->name, host->address);
+ : string_fmt_append(NULL, "H=%s [%s]", host->name, host->address);
if (suffix)
{
- message = string_sprintf("%s: %s", message, suffix);
+ message = string_fmt_append(message, ": %s", suffix);
if (basic_errno > 0)
- message = string_sprintf("%s: %s", message, strerror(basic_errno));
+ message = string_fmt_append(message, ": %s", strerror(basic_errno));
}
else
- message = string_sprintf("%s %s", message, exim_errstr(basic_errno));
+ message = string_fmt_append(message, " %s", exim_errstr(basic_errno));
-log_write(0, LOG_MAIN, "%s", message);
-deliver_msglog("%s %s\n", tod_stamp(tod_log), message);
+log_write(0, LOG_MAIN, "%s", string_from_gstring(message));
+deliver_msglog("%s %s\n", tod_stamp(tod_log), message->s);
}
static void
}
#endif
+/*************************************************
+* Reap SMTP specific responses *
+*************************************************/
+static int
+smtp_discard_responses(smtp_context * sx, smtp_transport_options_block * ob,
+ int count)
+{
+uschar flushbuffer[4096];
+
+while (count-- > 0)
+ {
+ if (!smtp_read_response(sx, flushbuffer, sizeof(flushbuffer),
+ '2', ob->command_timeout)
+ && (errno != 0 || flushbuffer[0] == 0))
+ break;
+ }
+return count;
+}
+
+
+/* Return boolean success */
+
+static BOOL
+smtp_reap_banner(smtp_context * sx)
+{
+BOOL good_response = smtp_read_response(sx, sx->buffer, sizeof(sx->buffer),
+ '2', (SOB sx->conn_args.ob)->command_timeout);
+#ifdef EXPERIMENTAL_DSN_INFO
+sx->smtp_greeting = string_copy(sx->buffer);
+#endif
+return good_response;
+}
+
+static BOOL
+smtp_reap_ehlo(smtp_context * sx)
+{
+if (!smtp_read_response(sx, sx->buffer, sizeof(sx->buffer), '2',
+ (SOB sx->conn_args.ob)->command_timeout))
+ {
+ if (errno != 0 || sx->buffer[0] == 0 || sx->lmtp)
+ {
+#ifdef EXPERIMENTAL_DSN_INFO
+ sx->helo_response = string_copy(sx->buffer);
+#endif
+ return FALSE;
+ }
+ sx->esmtp = FALSE;
+ }
+#ifdef EXPERIMENTAL_DSN_INFO
+sx->helo_response = string_copy(sx->buffer);
+#endif
+#ifndef DISABLE_EVENT
+(void) event_raise(sx->conn_args.tblock->event_action,
+ US"smtp:ehlo", sx->buffer);
+#endif
+return TRUE;
+}
+
+
+
+#ifndef DISABLE_PIPE_CONNECT
+static uschar *
+ehlo_cache_key(const smtp_context * sx)
+{
+host_item * host = sx->conn_args.host;
+return Ustrchr(host->address, ':')
+ ? string_sprintf("[%s]:%d.EHLO", host->address,
+ host->port == PORT_NONE ? sx->port : host->port)
+ : string_sprintf("%s:%d.EHLO", host->address,
+ host->port == PORT_NONE ? sx->port : host->port);
+}
+
+static void
+write_ehlo_cache_entry(const smtp_context * sx)
+{
+open_db dbblock, * dbm_file;
+
+if ((dbm_file = dbfn_open(US"misc", O_RDWR, &dbblock, TRUE, TRUE)))
+ {
+ uschar * ehlo_resp_key = ehlo_cache_key(sx);
+ dbdata_ehlo_resp er = { .data = sx->ehlo_resp };
+
+ HDEBUG(D_transport) debug_printf("writing clr %04x/%04x cry %04x/%04x\n",
+ sx->ehlo_resp.cleartext_features, sx->ehlo_resp.cleartext_auths,
+ sx->ehlo_resp.crypted_features, sx->ehlo_resp.crypted_auths);
+
+ dbfn_write(dbm_file, ehlo_resp_key, &er, (int)sizeof(er));
+ dbfn_close(dbm_file);
+ }
+}
+
+static void
+invalidate_ehlo_cache_entry(smtp_context * sx)
+{
+open_db dbblock, * dbm_file;
+
+if ( sx->early_pipe_active
+ && (dbm_file = dbfn_open(US"misc", O_RDWR, &dbblock, TRUE, TRUE)))
+ {
+ uschar * ehlo_resp_key = ehlo_cache_key(sx);
+ dbfn_delete(dbm_file, ehlo_resp_key);
+ dbfn_close(dbm_file);
+ }
+}
+
+static BOOL
+read_ehlo_cache_entry(smtp_context * sx)
+{
+open_db dbblock;
+open_db * dbm_file;
+
+if (!(dbm_file = dbfn_open(US"misc", O_RDONLY, &dbblock, FALSE, TRUE)))
+ { DEBUG(D_transport) debug_printf("ehlo-cache: no misc DB\n"); }
+else
+ {
+ uschar * ehlo_resp_key = ehlo_cache_key(sx);
+ dbdata_ehlo_resp * er;
+
+ if (!(er = dbfn_read(dbm_file, ehlo_resp_key)))
+ { DEBUG(D_transport) debug_printf("no ehlo-resp record\n"); }
+ else if (time(NULL) - er->time_stamp > retry_data_expire)
+ {
+ DEBUG(D_transport) debug_printf("ehlo-resp record too old\n");
+ dbfn_close(dbm_file);
+ if ((dbm_file = dbfn_open(US"misc", O_RDWR, &dbblock, TRUE, TRUE)))
+ dbfn_delete(dbm_file, ehlo_resp_key);
+ }
+ else
+ {
+ sx->ehlo_resp = er->data;
+ dbfn_close(dbm_file);
+ DEBUG(D_transport) debug_printf(
+ "EHLO response bits from cache: cleartext 0x%04x crypted 0x%04x\n",
+ er->data.cleartext_features, er->data.crypted_features);
+ return TRUE;
+ }
+ dbfn_close(dbm_file);
+ }
+return FALSE;
+}
+
+
+
+/* Return an auths bitmap for the set of AUTH methods offered by the server
+which match our authenticators. */
+
+static unsigned short
+study_ehlo_auths(smtp_context * sx)
+{
+uschar * names;
+auth_instance * au;
+uschar authnum;
+unsigned short authbits = 0;
+
+if (!sx->esmtp) return 0;
+if (!regex_AUTH) regex_AUTH = regex_must_compile(AUTHS_REGEX, FALSE, TRUE);
+if (!regex_match_and_setup(regex_AUTH, sx->buffer, 0, -1)) return 0;
+expand_nmax = -1; /* reset */
+names = string_copyn(expand_nstring[1], expand_nlength[1]);
+
+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)
+ { authbits |= BIT(authnum); break; }
+ }
+
+DEBUG(D_transport)
+ debug_printf("server offers %s AUTH, methods '%s', bitmap 0x%04x\n",
+ tls_out.active.sock >= 0 ? "crypted" : "plaintext", names, authbits);
+
+if (tls_out.active.sock >= 0)
+ sx->ehlo_resp.crypted_auths = authbits;
+else
+ sx->ehlo_resp.cleartext_auths = authbits;
+return authbits;
+}
+
+
+
+
+/* Wait for and check responses for early-pipelining.
+
+Called from the lower-level smtp_read_response() function
+used for general code that assume synchronisation, if context
+flags indicate outstanding early-pipelining commands. Also
+called fom sync_responses() which handles pipelined commands.
+
+Arguments:
+ sx smtp connection context
+ countp number of outstanding responses, adjusted on return
+
+Return:
+ OK all well
+ DEFER error on first read of TLS'd conn
+ FAIL SMTP error in response
+*/
+int
+smtp_reap_early_pipe(smtp_context * sx, int * countp)
+{
+BOOL pending_BANNER = sx->pending_BANNER;
+BOOL pending_EHLO = sx->pending_EHLO;
+int rc = FAIL;
+
+sx->pending_BANNER = FALSE; /* clear early to avoid recursion */
+sx->pending_EHLO = FALSE;
+
+if (pending_BANNER)
+ {
+ DEBUG(D_transport) debug_printf("%s expect banner\n", __FUNCTION__);
+ (*countp)--;
+ if (!smtp_reap_banner(sx))
+ {
+ DEBUG(D_transport) debug_printf("bad banner\n");
+ if (tls_out.active.sock >= 0) rc = DEFER;
+ goto fail;
+ }
+ }
+
+if (pending_EHLO)
+ {
+ unsigned peer_offered;
+ unsigned short authbits = 0, * ap;
+
+ DEBUG(D_transport) debug_printf("%s expect ehlo\n", __FUNCTION__);
+ (*countp)--;
+ if (!smtp_reap_ehlo(sx))
+ {
+ DEBUG(D_transport) debug_printf("bad response for EHLO\n");
+ if (tls_out.active.sock >= 0) rc = DEFER;
+ goto fail;
+ }
+
+ /* Compare the actual EHLO response to the cached value we assumed;
+ on difference, dump or rewrite the cache and arrange for a retry. */
+
+ ap = tls_out.active.sock < 0
+ ? &sx->ehlo_resp.cleartext_auths : &sx->ehlo_resp.crypted_auths;
+
+ peer_offered = ehlo_response(sx->buffer,
+ (tls_out.active.sock < 0 ? OPTION_TLS : 0)
+ | OPTION_CHUNKING | OPTION_PRDR | OPTION_DSN | OPTION_PIPE | OPTION_SIZE
+ | OPTION_UTF8 | OPTION_EARLY_PIPE
+ );
+ if ( peer_offered != sx->peer_offered
+ || (authbits = study_ehlo_auths(sx)) != *ap)
+ {
+ HDEBUG(D_transport)
+ debug_printf("EHLO %s extensions changed, 0x%04x/0x%04x -> 0x%04x/0x%04x\n",
+ tls_out.active.sock < 0 ? "cleartext" : "crypted",
+ sx->peer_offered, *ap, peer_offered, authbits);
+ *(tls_out.active.sock < 0
+ ? &sx->ehlo_resp.cleartext_features : &sx->ehlo_resp.crypted_features) = peer_offered;
+ *ap = authbits;
+ if (peer_offered & OPTION_EARLY_PIPE)
+ write_ehlo_cache_entry(sx);
+ else
+ invalidate_ehlo_cache_entry(sx);
+
+ return OK; /* just carry on */
+ }
+ }
+return OK;
+
+fail:
+ invalidate_ehlo_cache_entry(sx);
+ (void) smtp_discard_responses(sx, sx->conn_args.ob, *countp);
+ return rc;
+}
+#endif
+
+
/*************************************************
* Synchronize SMTP responses *
*************************************************/
-1 timeout while reading RCPT response
-2 I/O or other non-response error for RCPT
-3 DATA or MAIL failed - errno and buffer set
+ -4 banner or EHLO failed (early-pipelining)
+ -5 banner or EHLO failed (early-pipelining, TLS)
*/
static int
sync_responses(smtp_context * sx, int count, int pending_DATA)
{
-address_item *addr = sx->sync_addr;
-smtp_transport_options_block *ob =
- (smtp_transport_options_block *)sx->tblock->options_block;
+address_item * addr = sx->sync_addr;
+smtp_transport_options_block * ob = sx->conn_args.ob;
int yield = 0;
+#ifndef DISABLE_PIPE_CONNECT
+int rc;
+if ((rc = smtp_reap_early_pipe(sx, &count)) != OK)
+ return rc == FAIL ? -4 : -5;
+#endif
+
/* Handle the response for a MAIL command. On error, reinstate the original
command in big_buffer for error message use, and flush any further pending
responses before returning, except after I/O errors and timeouts. */
if (sx->pending_MAIL)
{
+ DEBUG(D_transport) debug_printf("%s expect mail\n", __FUNCTION__);
count--;
- if (!smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer),
+ if (!smtp_read_response(sx, sx->buffer, sizeof(sx->buffer),
'2', ob->command_timeout))
{
DEBUG(D_transport) debug_printf("bad response for MAIL\n");
Ustrcpy(big_buffer, mail_command); /* Fits, because it came from there! */
+ if (errno == ERRNO_TLSFAILURE)
+ return -5;
if (errno == 0 && sx->buffer[0] != 0)
{
- uschar flushbuffer[4096];
int save_errno = 0;
if (sx->buffer[0] == '4')
{
save_errno = ERRNO_MAIL4XX;
addr->more_errno |= ((sx->buffer[1] - '0')*10 + sx->buffer[2] - '0') << 8;
}
- while (count-- > 0)
- {
- if (!smtp_read_response(&sx->inblock, flushbuffer, sizeof(flushbuffer),
- '2', ob->command_timeout)
- && (errno != 0 || flushbuffer[0] == 0))
- break;
- }
+ count = smtp_discard_responses(sx, ob, count);
errno = save_errno;
}
while (count-- > 0) /* Mark any pending addrs with the host used */
{
while (addr->transport_return != PENDING_DEFER) addr = addr->next;
- addr->host_used = sx->host;
+ addr->host_used = sx->conn_args.host;
addr = addr->next;
}
return -3;
return -2;
/* The address was accepted */
- addr->host_used = sx->host;
+ addr->host_used = sx->conn_args.host;
- if (smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer),
+ DEBUG(D_transport) debug_printf("%s expect rcpt\n", __FUNCTION__);
+ if (smtp_read_response(sx, sx->buffer, sizeof(sx->buffer),
'2', ob->command_timeout))
{
yield |= 1;
}
}
+ /* Error on first TLS read */
+
+ else if (errno == ERRNO_TLSFAILURE)
+ return -5;
+
/* Timeout while reading the response */
else if (errno == ETIMEDOUT)
{
uschar *message = string_sprintf("SMTP timeout after RCPT TO:<%s>",
- transport_rcpt_address(addr, sx->tblock->rcpt_include_affixes));
+ transport_rcpt_address(addr, sx->conn_args.tblock->rcpt_include_affixes));
set_errno_nohost(sx->first_addr, ETIMEDOUT, message, DEFER, FALSE);
retry_add_item(addr, addr->address_retry_key, 0);
update_waiting = FALSE;
else if (errno != 0 || sx->buffer[0] == 0)
{
- string_format(big_buffer, big_buffer_size, "RCPT TO:<%s>",
- transport_rcpt_address(addr, sx->tblock->rcpt_include_affixes));
+ gstring gs = { .size = big_buffer_size, .ptr = 0, .s = big_buffer }, * g = &gs;
+
+ /* Use taint-unchecked routines for writing into big_buffer, trusting
+ that we'll never expand it. */
+
+ g = string_fmt_append_f(g, SVFMT_TAINT_NOCHK, "RCPT TO:<%s>",
+ transport_rcpt_address(addr, sx->conn_args.tblock->rcpt_include_affixes));
+ string_from_gstring(g);
return -2;
}
{
addr->message =
string_sprintf("SMTP error from remote mail server after RCPT TO:<%s>: "
- "%s", transport_rcpt_address(addr, sx->tblock->rcpt_include_affixes),
+ "%s", transport_rcpt_address(addr, sx->conn_args.tblock->rcpt_include_affixes),
string_printing(sx->buffer));
setflag(addr, af_pass_message);
if (!sx->verify)
- msglog_line(sx->host, addr->message);
+ msglog_line(sx->conn_args.host, addr->message);
/* The response was 5xx */
/* Log temporary errors if there are more hosts to be tried.
If not, log this last one in the == line. */
- if (sx->host->next)
- log_write(0, LOG_MAIN, "H=%s [%s]: %s",
- sx->host->name, sx->host->address, addr->message);
+ if (sx->conn_args.host->next)
+ if (LOGGING(outgoing_port))
+ log_write(0, LOG_MAIN, "H=%s [%s]:%d %s", sx->conn_args.host->name,
+ sx->conn_args.host->address,
+ sx->port == PORT_NONE ? 25 : sx->port, addr->message);
+ else
+ log_write(0, LOG_MAIN, "H=%s [%s]: %s", sx->conn_args.host->name,
+ sx->conn_args.host->address, addr->message);
#ifndef DISABLE_EVENT
else
/* Handle a response to DATA. If we have not had any good recipients, either
previously or in this block, the response is ignored. */
-if (pending_DATA != 0 &&
- !smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer),
- '3', ob->command_timeout))
+if (pending_DATA != 0)
{
- int code;
- uschar *msg;
- BOOL pass_message;
- if (pending_DATA > 0 || (yield & 1) != 0)
+ DEBUG(D_transport) debug_printf("%s expect data\n", __FUNCTION__);
+ if (!smtp_read_response(sx, sx->buffer, sizeof(sx->buffer),
+ '3', ob->command_timeout))
{
- if (errno == 0 && sx->buffer[0] == '4')
+ int code;
+ uschar *msg;
+ BOOL pass_message;
+
+ if (errno == ERRNO_TLSFAILURE) /* Error on first TLS read */
+ return -5;
+
+ if (pending_DATA > 0 || (yield & 1) != 0)
{
- errno = ERRNO_DATA4XX;
- sx->first_addr->more_errno |= ((sx->buffer[1] - '0')*10 + sx->buffer[2] - '0') << 8;
+ if (errno == 0 && sx->buffer[0] == '4')
+ {
+ errno = ERRNO_DATA4XX;
+ sx->first_addr->more_errno |= ((sx->buffer[1] - '0')*10 + sx->buffer[2] - '0') << 8;
+ }
+ return -3;
}
- return -3;
+ (void)check_response(sx->conn_args.host, &errno, 0, sx->buffer, &code, &msg, &pass_message);
+ DEBUG(D_transport) debug_printf("%s\nerror for DATA ignored: pipelining "
+ "is in use and there were no good recipients\n", msg);
}
- (void)check_response(sx->host, &errno, 0, sx->buffer, &code, &msg, &pass_message);
- DEBUG(D_transport) debug_printf("%s\nerror for DATA ignored: pipelining "
- "is in use and there were no good recipients\n", msg);
}
/* All responses read and handled; MAIL (if present) received 2xx and DATA (if
-/* Do the client side of smtp-level authentication */
-/*
+
+
+/* Try an authenticator's client entry */
+
+static int
+try_authenticator(smtp_context * sx, auth_instance * au)
+{
+smtp_transport_options_block * ob = sx->conn_args.ob; /* transport options */
+host_item * host = sx->conn_args.host; /* host to deliver to */
+int rc;
+
+sx->outblock.authenticating = TRUE;
+rc = (au->info->clientcode)(au, sx, ob->command_timeout,
+ sx->buffer, sizeof(sx->buffer));
+sx->outblock.authenticating = FALSE;
+DEBUG(D_transport) debug_printf("%s authenticator yielded %d\n", au->name, rc);
+
+/* A temporary authentication failure must hold up delivery to
+this host. After a permanent authentication failure, we carry on
+to try other authentication methods. If all fail hard, try to
+deliver the message unauthenticated unless require_auth was set. */
+
+switch(rc)
+ {
+ case OK:
+ f.smtp_authenticated = TRUE; /* stops the outer loop */
+ client_authenticator = au->name;
+ if (au->set_client_id)
+ client_authenticated_id = expand_string(au->set_client_id);
+ break;
+
+ /* Failure after writing a command */
+
+ case FAIL_SEND:
+ return FAIL_SEND;
+
+ /* Failure after reading a response */
+
+ case FAIL:
+ if (errno != 0 || sx->buffer[0] != '5') return FAIL;
+ log_write(0, LOG_MAIN, "%s authenticator failed H=%s [%s] %s",
+ au->name, host->name, host->address, sx->buffer);
+ break;
+
+ /* Failure by some other means. In effect, the authenticator
+ decided it wasn't prepared to handle this case. Typically this
+ is the result of "fail" in an expansion string. Do we need to
+ log anything here? Feb 2006: a message is now put in the buffer
+ if logging is required. */
+
+ case CANCELLED:
+ if (*sx->buffer != 0)
+ log_write(0, LOG_MAIN, "%s authenticator cancelled "
+ "authentication H=%s [%s] %s", au->name, host->name,
+ host->address, sx->buffer);
+ break;
+
+ /* Internal problem, message in buffer. */
+
+ case ERROR:
+ set_errno_nohost(sx->addrlist, ERRNO_AUTHPROB, string_copy(sx->buffer),
+ DEFER, FALSE);
+ return ERROR;
+ }
+return OK;
+}
+
+
+
+
+/* Do the client side of smtp-level authentication.
+
Arguments:
- buffer EHLO response from server (gets overwritten)
- addrlist chain of potential addresses to deliver
- host host to deliver to
- ob transport options
- ibp, obp comms channel control blocks
+ sx smtp connection context
+
+sx->buffer should have the EHLO response from server (gets overwritten)
Returns:
OK Success, or failed (but not required): global "smtp_authenticated" set
FAIL - response
*/
-int
-smtp_auth(uschar *buffer, unsigned bufsize, address_item *addrlist, host_item *host,
- smtp_transport_options_block *ob, BOOL is_esmtp,
- smtp_inblock *ibp, smtp_outblock *obp)
+static int
+smtp_auth(smtp_context * sx)
{
-int require_auth;
-uschar *fail_reason = US"server did not advertise AUTH support";
+host_item * host = sx->conn_args.host; /* host to deliver to */
+smtp_transport_options_block * ob = sx->conn_args.ob; /* transport options */
+int require_auth = verify_check_given_host(CUSS &ob->hosts_require_auth, host);
+#ifndef DISABLE_PIPE_CONNECT
+unsigned short authbits = tls_out.active.sock >= 0
+ ? sx->ehlo_resp.crypted_auths : sx->ehlo_resp.cleartext_auths;
+#endif
+uschar * fail_reason = US"server did not advertise AUTH support";
-smtp_authenticated = FALSE;
+f.smtp_authenticated = FALSE;
client_authenticator = client_authenticated_id = client_authenticated_sender = NULL;
-require_auth = verify_check_given_host(&ob->hosts_require_auth, host);
-if (is_esmtp && !regex_AUTH) regex_AUTH =
- regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)",
- FALSE, TRUE);
+if (!regex_AUTH)
+ regex_AUTH = regex_must_compile(AUTHS_REGEX, FALSE, TRUE);
+
+/* Is the server offering AUTH? */
-if (is_esmtp && regex_match_and_setup(regex_AUTH, buffer, 0, -1))
+if ( sx->esmtp
+ &&
+#ifndef DISABLE_PIPE_CONNECT
+ sx->early_pipe_active ? authbits
+ :
+#endif
+ regex_match_and_setup(regex_AUTH, sx->buffer, 0, -1)
+ )
{
- uschar *names = string_copyn(expand_nstring[1], expand_nlength[1]);
+ uschar * names = NULL;
expand_nmax = -1; /* reset */
+#ifndef DISABLE_PIPE_CONNECT
+ if (!sx->early_pipe_active)
+#endif
+ names = string_copyn(expand_nstring[1], expand_nlength[1]);
+
/* Must not do this check until after we have saved the result of the
- regex match above. */
+ regex match above as the check could be another RE. */
- if (require_auth == OK ||
- verify_check_given_host(&ob->hosts_try_auth, host) == OK)
+ if ( require_auth == OK
+ || verify_check_given_host(CUSS &ob->hosts_try_auth, host) == OK)
{
- auth_instance *au;
+ DEBUG(D_transport) debug_printf("scanning authentication mechanisms\n");
fail_reason = US"no common mechanisms were found";
- DEBUG(D_transport) debug_printf("scanning authentication mechanisms\n");
+#ifndef DISABLE_PIPE_CONNECT
+ if (sx->early_pipe_active)
+ {
+ /* Scan our authenticators (which support use by a client and were offered
+ by the server (checked at cache-write time)), not suppressed by
+ client_condition. If one is found, attempt to authenticate by calling its
+ client function. We are limited to supporting up to 16 authenticator
+ public-names by the number of bits in a short. */
+
+ auth_instance * au;
+ uschar bitnum;
+ int rc;
+
+ for (bitnum = 0, au = auths;
+ !f.smtp_authenticated && au && bitnum < 16;
+ bitnum++, au = au->next) if (authbits & BIT(bitnum))
+ {
+ if ( au->client_condition
+ && !expand_check_condition(au->client_condition, au->name,
+ US"client authenticator"))
+ {
+ DEBUG(D_transport) debug_printf("skipping %s authenticator: %s\n",
+ au->name, "client_condition is false");
+ continue;
+ }
+
+ /* Found data for a listed mechanism. Call its client entry. Set
+ a flag in the outblock so that data is overwritten after sending so
+ that reflections don't show it. */
+
+ fail_reason = US"authentication attempt(s) failed";
+
+ if ((rc = try_authenticator(sx, au)) != OK)
+ return rc;
+ }
+ }
+ else
+#endif
/* Scan the configured authenticators looking for one which is configured
for use as a client, which is not suppressed by client_condition, and
If one is found, attempt to authenticate by calling its client function.
*/
- for (au = auths; !smtp_authenticated && au; au = au->next)
+ for (auth_instance * au = auths; !f.smtp_authenticated && au; au = au->next)
{
uschar *p = names;
- if (!au->client ||
- (au->client_condition != NULL &&
- !expand_check_condition(au->client_condition, au->name,
- US"client authenticator")))
+
+ if ( !au->client
+ || ( au->client_condition
+ && !expand_check_condition(au->client_condition, au->name,
+ US"client authenticator")))
{
DEBUG(D_transport) debug_printf("skipping %s authenticator: %s\n",
au->name,
while (*p)
{
- int rc;
int len = Ustrlen(au->public_name);
+ int rc;
+
while (isspace(*p)) p++;
if (strncmpic(au->public_name, p, len) != 0 ||
that reflections don't show it. */
fail_reason = US"authentication attempt(s) failed";
- obp->authenticating = TRUE;
- rc = (au->info->clientcode)(au, ibp, obp,
- ob->command_timeout, buffer, bufsize);
- obp->authenticating = FALSE;
- DEBUG(D_transport) debug_printf("%s authenticator yielded %d\n",
- au->name, rc);
-
- /* A temporary authentication failure must hold up delivery to
- this host. After a permanent authentication failure, we carry on
- to try other authentication methods. If all fail hard, try to
- deliver the message unauthenticated unless require_auth was set. */
-
- switch(rc)
- {
- case OK:
- smtp_authenticated = TRUE; /* stops the outer loop */
- client_authenticator = au->name;
- if (au->set_client_id != NULL)
- client_authenticated_id = expand_string(au->set_client_id);
- break;
-
- /* Failure after writing a command */
-
- case FAIL_SEND:
- return FAIL_SEND;
-
- /* Failure after reading a response */
-
- case FAIL:
- if (errno != 0 || buffer[0] != '5') return FAIL;
- log_write(0, LOG_MAIN, "%s authenticator failed H=%s [%s] %s",
- au->name, host->name, host->address, buffer);
- break;
-
- /* Failure by some other means. In effect, the authenticator
- decided it wasn't prepared to handle this case. Typically this
- is the result of "fail" in an expansion string. Do we need to
- log anything here? Feb 2006: a message is now put in the buffer
- if logging is required. */
-
- case CANCELLED:
- if (*buffer != 0)
- log_write(0, LOG_MAIN, "%s authenticator cancelled "
- "authentication H=%s [%s] %s", au->name, host->name,
- host->address, buffer);
- break;
- /* Internal problem, message in buffer. */
-
- case ERROR:
- set_errno_nohost(addrlist, ERRNO_AUTHPROB, string_copy(buffer),
- DEFER, FALSE);
- return ERROR;
- }
+ if ((rc = try_authenticator(sx, au)) != OK)
+ return rc;
break; /* If not authenticated, try next authenticator */
} /* Loop for scanning supported server mechanisms */
/* If we haven't authenticated, but are required to, give up. */
-if (require_auth == OK && !smtp_authenticated)
+if (require_auth == OK && !f.smtp_authenticated)
{
- set_errno_nohost(addrlist, ERRNO_AUTHFAIL,
+ set_errno_nohost(sx->addrlist, ERRNO_AUTHFAIL,
string_sprintf("authentication required but %s", fail_reason), DEFER,
FALSE);
return DEFER;
addrlist chain of potential addresses to deliver
ob transport options
-Globals smtp_authenticated
+Globals f.smtp_authenticated
client_authenticated_sender
Return True on error, otherwise buffer has (possibly empty) terminated string
*/
-BOOL
+static BOOL
smtp_mail_auth_str(uschar *buffer, unsigned bufsize, address_item *addrlist,
smtp_transport_options_block *ob)
{
-uschar *local_authenticated_sender = authenticated_sender;
+uschar * local_authenticated_sender = authenticated_sender;
#ifdef notdef
- debug_printf("smtp_mail_auth_str: as<%s> os<%s> SA<%s>\n", authenticated_sender, ob->authenticated_sender, smtp_authenticated?"Y":"N");
+ debug_printf("smtp_mail_auth_str: as<%s> os<%s> SA<%s>\n", authenticated_sender, ob->authenticated_sender, f.smtp_authenticated?"Y":"N");
#endif
-if (ob->authenticated_sender != NULL)
+if (ob->authenticated_sender)
{
uschar *new = expand_string(ob->authenticated_sender);
- if (new == NULL)
+ if (!new)
{
- if (!expand_string_forcedfail)
+ if (!f.expand_string_forcedfail)
{
uschar *message = string_sprintf("failed to expand "
"authenticated_sender: %s", expand_string_message);
return TRUE;
}
}
- else if (new[0] != 0) local_authenticated_sender = new;
+ else if (*new) local_authenticated_sender = new;
}
/* Add the authenticated sender address if present */
-if ((smtp_authenticated || ob->authenticated_sender_force) &&
- local_authenticated_sender != NULL)
+if ( (f.smtp_authenticated || ob->authenticated_sender_force)
+ && local_authenticated_sender)
{
- string_format(buffer, bufsize, " AUTH=%s",
+ string_format_nt(buffer, bufsize, " AUTH=%s",
auth_xtextencode(local_authenticated_sender,
- Ustrlen(local_authenticated_sender)));
+ Ustrlen(local_authenticated_sender)));
client_authenticated_sender = string_copy(local_authenticated_sender);
}
else
-#ifdef EXPERIMENTAL_DANE
+#ifdef SUPPORT_DANE
/* Lookup TLSA record for host/port.
Return: OK success with dnssec; DANE mode
DEFER Do not use this host now, may retry later
return DEFER; /* just defer this TLS'd conn */
case DNS_SUCCEED:
- if (sec) return OK;
+ if (sec)
+ {
+ DEBUG(D_transport)
+ {
+ dns_scan dnss;
+ for (dns_record * rr = dns_next_rr(dnsa, &dnss, RESET_ANSWERS); rr;
+ rr = dns_next_rr(dnsa, &dnss, RESET_NEXT))
+ if (rr->type == T_TLSA && rr->size > 3)
+ {
+ uint16_t payload_length = rr->size - 3;
+ uschar s[MAX_TLSA_EXPANDED_SIZE], * sp = s, * p = US rr->data;
+
+ sp += sprintf(CS sp, "%d ", *p++); /* usage */
+ sp += sprintf(CS sp, "%d ", *p++); /* selector */
+ sp += sprintf(CS sp, "%d ", *p++); /* matchtype */
+ while (payload_length-- > 0 && sp-s < (MAX_TLSA_EXPANDED_SIZE - 4))
+ sp += sprintf(CS sp, "%02x", *p++);
+
+ debug_printf(" %s\n", s);
+ }
+ }
+ return OK;
+ }
log_write(0, LOG_MAIN,
"DANE error: TLSA lookup for %s not DNSSEC", host->name);
/*FALLTRHOUGH*/
address_item * addr1;
uschar * if1 = US"";
uschar * helo1 = US"";
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
uschar * tlsc1 = US"";
#endif
uschar * save_sender_address = sender_address;
uschar * local_identity = NULL;
-smtp_transport_options_block * ob =
- (smtp_transport_options_block *)tblock->options_block;
+smtp_transport_options_block * ob = SOB tblock->options_block;
sender_address = sender;
if (ob->helo_data)
helo1 = expand_string(ob->helo_data);
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if (ob->tls_certificate)
tlsc1 = expand_string(ob->tls_certificate);
local_identity = string_sprintf ("%s^%s^%s", if1, helo1, tlsc1);
-static uschar
-ehlo_response(uschar * buf, uschar checks)
+static unsigned
+ehlo_response(uschar * buf, unsigned checks)
{
size_t bsize = Ustrlen(buf);
-#ifdef SUPPORT_TLS
+/* debug_printf("%s: check for 0x%04x\n", __FUNCTION__, checks); */
+
+#ifndef DISABLE_TLS
if ( checks & OPTION_TLS
&& pcre_exec(regex_STARTTLS, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
- checks &= ~OPTION_TLS;
#endif
+ checks &= ~OPTION_TLS;
if ( checks & OPTION_IGNQ
&& pcre_exec(regex_IGNOREQUOTA, NULL, CS buf, bsize, 0,
#ifndef DISABLE_PRDR
if ( checks & OPTION_PRDR
&& pcre_exec(regex_PRDR, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
- checks &= ~OPTION_PRDR;
#endif
+ checks &= ~OPTION_PRDR;
#ifdef SUPPORT_I18N
if ( checks & OPTION_UTF8
&& pcre_exec(regex_UTF8, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
- checks &= ~OPTION_UTF8;
#endif
+ checks &= ~OPTION_UTF8;
if ( checks & OPTION_DSN
&& pcre_exec(regex_DSN, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
&& pcre_exec(regex_SIZE, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
checks &= ~OPTION_SIZE;
+#ifndef DISABLE_PIPE_CONNECT
+if ( checks & OPTION_EARLY_PIPE
+ && pcre_exec(regex_EARLY_PIPE, NULL, CS buf, bsize, 0,
+ PCRE_EOPT, NULL, 0) < 0)
+#endif
+ checks &= ~OPTION_EARLY_PIPE;
+
+/* debug_printf("%s: found 0x%04x\n", __FUNCTION__, checks); */
return checks;
}
tc_chunk_last add LAST option to SMTP BDAT command
tc_reap_prev reap response to previous SMTP commands
-Returns: OK or ERROR
+Returns:
+ OK or ERROR
+ DEFER TLS error on first read (EHLO-resp); errno set
*/
static int
smtp_chunk_cmd_callback(transport_ctx * tctx, unsigned chunk_size,
unsigned flags)
{
-smtp_transport_options_block * ob =
- (smtp_transport_options_block *)(tctx->tblock->options_block);
+smtp_transport_options_block * ob = SOB tctx->tblock->options_block;
smtp_context * sx = tctx->smtp_context;
int cmd_count = 0;
int prev_cmd_count;
if (chunk_size > 0)
{
- if((cmd_count = smtp_write_command(&sx->outblock,
+#ifndef DISABLE_PIPE_CONNECT
+ BOOL new_conn = !!(sx->outblock.conn_args);
+#endif
+ if((cmd_count = smtp_write_command(sx,
flags & tc_reap_prev ? SCMD_FLUSH : SCMD_MORE,
"BDAT %u%s\r\n", chunk_size, flags & tc_chunk_last ? " LAST" : "")
) < 0) return ERROR;
if (flags & tc_chunk_last)
data_command = string_copy(big_buffer); /* Save for later error message */
+#ifndef DISABLE_PIPE_CONNECT
+ /* That command write could have been the one that made the connection.
+ Copy the fd from the client conn ctx (smtp transport specific) to the
+ generic transport ctx. */
+
+ if (new_conn)
+ tctx->u.fd = sx->outblock.cctx->sock;
+#endif
}
prev_cmd_count = cmd_count += sx->cmd_count;
case 2: sx->completed_addr = TRUE; /* 5xx (only) => progress made */
case 0: break; /* No 2xx or 5xx, but no probs */
+ case -5: errno = ERRNO_TLSFAILURE;
+ return DEFER;
+#ifndef DISABLE_PIPE_CONNECT
+ case -4: /* non-2xx for pipelined banner or EHLO */
+#endif
case -1: /* Timeout on RCPT */
default: return ERROR; /* I/O error, or any MAIL/DATA error */
}
{
DEBUG(D_transport) debug_printf("look for one response for BDAT\n");
- if (!smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer), '2',
+ if (!smtp_read_response(sx, sx->buffer, sizeof(sx->buffer), '2',
ob->command_timeout))
{
if (errno == 0 && sx->buffer[0] == '4')
+
+
/*************************************************
* Make connection for given message *
*************************************************/
int
smtp_setup_conn(smtp_context * sx, BOOL suppress_tls)
{
-#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
-dns_answer tlsa_dnsa;
-#endif
+smtp_transport_options_block * ob = sx->conn_args.tblock->options_block;
BOOL pass_message = FALSE;
uschar * message = NULL;
int yield = OK;
-int rc;
+#ifndef DISABLE_TLS
+uschar * tls_errstr;
+#endif
-sx->ob = (smtp_transport_options_block *) sx->tblock->options_block;
+sx->conn_args.ob = ob;
-sx->lmtp = strcmpic(sx->ob->protocol, US"lmtp") == 0;
-sx->smtps = strcmpic(sx->ob->protocol, US"smtps") == 0;
+sx->lmtp = strcmpic(ob->protocol, US"lmtp") == 0;
+sx->smtps = strcmpic(ob->protocol, US"smtps") == 0;
sx->ok = FALSE;
sx->send_rset = TRUE;
sx->send_quit = TRUE;
sx->utf8_needed = FALSE;
#endif
sx->dsn_all_lasthop = TRUE;
-#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
-sx->dane = FALSE;
-sx->dane_required = verify_check_given_host(&sx->ob->hosts_require_dane, sx->host) == OK;
+#ifdef SUPPORT_DANE
+sx->conn_args.dane = FALSE;
+sx->dane_required =
+ verify_check_given_host(CUSS &ob->hosts_require_dane, sx->conn_args.host) == OK;
+#endif
+#ifndef DISABLE_PIPE_CONNECT
+sx->early_pipe_active = sx->early_pipe_ok = FALSE;
+sx->ehlo_resp.cleartext_features = sx->ehlo_resp.crypted_features = 0;
+sx->pending_BANNER = sx->pending_EHLO = FALSE;
#endif
-if ((sx->max_rcpt = sx->tblock->max_addresses) == 0) sx->max_rcpt = 999999;
+if ((sx->max_rcpt = sx->conn_args.tblock->max_addresses) == 0) sx->max_rcpt = 999999;
sx->peer_offered = 0;
sx->avoid_option = 0;
sx->igquotstr = US"";
-if (!sx->helo_data) sx->helo_data = sx->ob->helo_data;
+if (!sx->helo_data) sx->helo_data = ob->helo_data;
#ifdef EXPERIMENTAL_DSN_INFO
sx->smtp_greeting = NULL;
sx->helo_response = NULL;
sx->outblock.ptr = sx->outbuffer;
sx->outblock.cmd_count = 0;
sx->outblock.authenticating = FALSE;
+sx->outblock.conn_args = NULL;
/* Reset the parameters of a TLS session. */
tls_out.ourcert = NULL;
tls_out.peercert = NULL;
tls_out.peerdn = NULL;
-#if defined(SUPPORT_TLS) && !defined(USE_GNUTLS)
+#ifdef USE_OPENSSL
tls_out.sni = NULL;
#endif
tls_out.ocsp = OCSP_NOT_REQ;
+#ifdef EXPERIMENTAL_TLS_RESUME
+tls_out.resumption = 0;
+#endif
+tls_out.ver = NULL;
/* Flip the legacy TLS-related variables over to the outbound set in case
they're used in the context of the transport. Don't bother resetting
tls_modify_variables(&tls_out);
-#ifndef SUPPORT_TLS
+#ifdef DISABLE_TLS
if (sx->smtps)
{
set_errno_nohost(sx->addrlist, ERRNO_TLSFAILURE, US"TLS support not available",
if (!continue_hostname)
{
if (sx->verify)
- HDEBUG(D_verify) debug_printf("interface=%s port=%d\n", sx->interface, sx->port);
+ HDEBUG(D_verify) debug_printf("interface=%s port=%d\n", sx->conn_args.interface, sx->port);
- /* Get the actual port the connection will use, into sx->host */
+ /* Get the actual port the connection will use, into sx->conn_args.host */
- smtp_port_for_connect(sx->host, sx->port);
+ smtp_port_for_connect(sx->conn_args.host, sx->port);
-#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
+#ifdef SUPPORT_DANE
/* Do TLSA lookup for DANE */
{
tls_out.dane_verified = FALSE;
tls_out.tlsa_usage = 0;
- if (sx->host->dnssec == DS_YES)
+ if (sx->conn_args.host->dnssec == DS_YES)
{
+ int rc;
if( sx->dane_required
- || verify_check_given_host(&sx->ob->hosts_try_dane, sx->host) == OK
+ || verify_check_given_host(CUSS &ob->hosts_try_dane, sx->conn_args.host) == OK
)
- switch (rc = tlsa_lookup(sx->host, &tlsa_dnsa, sx->dane_required))
+ switch (rc = tlsa_lookup(sx->conn_args.host, &sx->conn_args.tlsa_dnsa, sx->dane_required))
{
- case OK: sx->dane = TRUE;
- sx->ob->tls_tempfail_tryclear = FALSE;
+ case OK: sx->conn_args.dane = TRUE;
+ ob->tls_tempfail_tryclear = FALSE;
break;
case FAIL_FORCED: break;
default: set_errno_nohost(sx->addrlist, ERRNO_DNSDEFER,
string_sprintf("DANE error: tlsa lookup %s",
- rc == DEFER ? "DEFER" : "FAIL"),
+ rc_to_string(rc)),
rc, FALSE);
+# ifndef DISABLE_EVENT
+ (void) event_raise(sx->conn_args.tblock->event_action,
+ US"dane:fail", sx->dane_required
+ ? US"dane-required" : US"dnssec-invalid");
+# endif
return rc;
}
}
else if (sx->dane_required)
{
set_errno_nohost(sx->addrlist, ERRNO_DNSDEFER,
- string_sprintf("DANE error: %s lookup not DNSSEC", sx->host->name),
+ string_sprintf("DANE error: %s lookup not DNSSEC", sx->conn_args.host->name),
FAIL, FALSE);
+# ifndef DISABLE_EVENT
+ (void) event_raise(sx->conn_args.tblock->event_action,
+ US"dane:fail", US"dane-required");
+# endif
return FAIL;
}
}
/* Make the TCP connection */
- sx->inblock.sock = sx->outblock.sock =
- smtp_connect(sx->host, sx->host_af, sx->interface,
- sx->ob->connect_timeout, sx->tblock);
+ sx->cctx.tls_ctx = NULL;
+ sx->inblock.cctx = sx->outblock.cctx = &sx->cctx;
+ sx->avoid_option = sx->peer_offered = smtp_peer_options = 0;
+
+#ifndef DISABLE_PIPE_CONNECT
+ if ( verify_check_given_host(CUSS &ob->hosts_pipe_connect,
+ sx->conn_args.host) == OK)
+
+ /* We don't find out the local ip address until the connect, so if
+ the helo string might use it avoid doing early-pipelining. */
+
+ if ( !sx->helo_data
+ || !Ustrstr(sx->helo_data, "$sending_ip_address")
+ || Ustrstr(sx->helo_data, "def:sending_ip_address")
+ )
+ {
+ sx->early_pipe_ok = TRUE;
+ if ( read_ehlo_cache_entry(sx)
+ && sx->ehlo_resp.cleartext_features & OPTION_EARLY_PIPE)
+ {
+ DEBUG(D_transport)
+ debug_printf("Using cached cleartext PIPE_CONNECT\n");
+ sx->early_pipe_active = TRUE;
+ sx->peer_offered = sx->ehlo_resp.cleartext_features;
+ }
+ }
+ else DEBUG(D_transport)
+ debug_printf("helo needs $sending_ip_address\n");
- if (sx->inblock.sock < 0)
+ if (sx->early_pipe_active)
+ sx->outblock.conn_args = &sx->conn_args;
+ else
+#endif
{
- uschar * msg = NULL;
- if (sx->verify)
+ if ((sx->cctx.sock = smtp_connect(&sx->conn_args, NULL)) < 0)
{
- msg = US strerror(errno);
- HDEBUG(D_verify) debug_printf("connect: %s\n", msg);
+ set_errno_nohost(sx->addrlist,
+ errno == ETIMEDOUT ? ERRNO_CONNECTTIMEOUT : errno,
+ sx->verify ? US strerror(errno) : NULL,
+ DEFER, FALSE);
+ sx->send_quit = FALSE;
+ return DEFER;
}
- set_errno_nohost(sx->addrlist,
- errno == ETIMEDOUT ? ERRNO_CONNECTTIMEOUT : errno,
- sx->verify ? string_sprintf("could not connect: %s", msg)
- : NULL,
- DEFER, FALSE);
- sx->send_quit = FALSE;
- return DEFER;
}
-
/* Expand the greeting message while waiting for the initial response. (Makes
sense if helo_data contains ${lookup dnsdb ...} stuff). The expansion is
delayed till here so that $sending_interface and $sending_port are set. */
+/*XXX early-pipe: they still will not be. Is there any way to find out what they
+will be? Somehow I doubt it. */
if (sx->helo_data)
if (!(sx->helo_data = expand_string(sx->helo_data)))
if (!sx->smtps)
{
- BOOL good_response;
-
-#ifdef TCP_QUICKACK
- (void) setsockopt(sx->inblock.sock, IPPROTO_TCP, TCP_QUICKACK, US &off, sizeof(off));
+#ifndef DISABLE_PIPE_CONNECT
+ if (sx->early_pipe_active)
+ {
+ sx->pending_BANNER = TRUE; /* sync_responses() must eventually handle */
+ sx->outblock.cmd_count = 1;
+ }
+ else
#endif
- good_response = smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer),
- '2', sx->ob->command_timeout);
-#ifdef EXPERIMENTAL_DSN_INFO
- sx->smtp_greeting = string_copy(sx->buffer);
+ {
+#ifdef TCP_QUICKACK
+ (void) setsockopt(sx->cctx.sock, IPPROTO_TCP, TCP_QUICKACK, US &off,
+ sizeof(off));
#endif
- if (!good_response) goto RESPONSE_FAILED;
+ if (!smtp_reap_banner(sx))
+ goto RESPONSE_FAILED;
+ }
#ifndef DISABLE_EVENT
{
uschar * s;
- lookup_dnssec_authenticated = sx->host->dnssec==DS_YES ? US"yes"
- : sx->host->dnssec==DS_NO ? US"no" : NULL;
- s = event_raise(sx->tblock->event_action, US"smtp:connect", sx->buffer);
+ lookup_dnssec_authenticated = sx->conn_args.host->dnssec==DS_YES ? US"yes"
+ : sx->conn_args.host->dnssec==DS_NO ? US"no" : NULL;
+ s = event_raise(sx->conn_args.tblock->event_action, US"smtp:connect", sx->buffer);
if (s)
{
set_errno_nohost(sx->addrlist, ERRNO_EXPANDFAIL,
mailers use upper case for some reason (the RFC is quite clear about case
independence) so, for peace of mind, I gave in. */
- sx->esmtp = verify_check_given_host(&sx->ob->hosts_avoid_esmtp, sx->host) != OK;
+ sx->esmtp = verify_check_given_host(CUSS &ob->hosts_avoid_esmtp, sx->conn_args.host) != OK;
/* Alas; be careful, since this goto is not an error-out, so conceivably
we might set data between here and the target which we assume to exist
and be usable. I can see this coming back to bite us. */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if (sx->smtps)
{
smtp_peer_options |= OPTION_TLS;
suppress_tls = FALSE;
- sx->ob->tls_tempfail_tryclear = FALSE;
+ ob->tls_tempfail_tryclear = FALSE;
smtp_command = US"SSL-on-connect";
goto TLS_NEGOTIATE;
}
if (sx->esmtp)
{
- if (smtp_write_command(&sx->outblock, SCMD_FLUSH, "%s %s\r\n",
- sx->lmtp ? "LHLO" : "EHLO", sx->helo_data) < 0)
+ if (smtp_write_command(sx,
+#ifndef DISABLE_PIPE_CONNECT
+ sx->early_pipe_active ? SCMD_BUFFER :
+#endif
+ SCMD_FLUSH,
+ "%s %s\r\n", sx->lmtp ? "LHLO" : "EHLO", sx->helo_data) < 0)
goto SEND_FAILED;
sx->esmtp_sent = TRUE;
- if (!smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer), '2',
- sx->ob->command_timeout))
+
+#ifndef DISABLE_PIPE_CONNECT
+ if (sx->early_pipe_active)
{
- if (errno != 0 || sx->buffer[0] == 0 || sx->lmtp)
+ sx->pending_EHLO = TRUE;
+
+ /* If we have too many authenticators to handle and might need to AUTH
+ for this transport, pipeline no further as we will need the
+ list of auth methods offered. Reap the banner and EHLO. */
+
+ if ( (ob->hosts_require_auth || ob->hosts_try_auth)
+ && f.smtp_in_early_pipe_no_auth)
{
-#ifdef EXPERIMENTAL_DSN_INFO
- sx->helo_response = string_copy(sx->buffer);
-#endif
- goto RESPONSE_FAILED;
+ DEBUG(D_transport) debug_printf("may need to auth, so pipeline no further\n");
+ if (smtp_write_command(sx, SCMD_FLUSH, NULL) < 0)
+ goto SEND_FAILED;
+ if (sync_responses(sx, 2, 0) != 0)
+ {
+ HDEBUG(D_transport)
+ debug_printf("failed reaping pipelined cmd responses\n");
+ goto RESPONSE_FAILED;
+ }
+ sx->early_pipe_active = FALSE;
}
- sx->esmtp = FALSE;
}
-#ifdef EXPERIMENTAL_DSN_INFO
- sx->helo_response = string_copy(sx->buffer);
+ else
#endif
+ if (!smtp_reap_ehlo(sx))
+ goto RESPONSE_FAILED;
}
else
DEBUG(D_transport)
debug_printf("not sending EHLO (host matches hosts_avoid_esmtp)\n");
- if (!sx->esmtp)
- {
- BOOL good_response;
- int n = sizeof(sx->buffer);
- uschar * rsp = sx->buffer;
+#ifndef DISABLE_PIPE_CONNECT
+ if (!sx->early_pipe_active)
+#endif
+ if (!sx->esmtp)
+ {
+ BOOL good_response;
+ int n = sizeof(sx->buffer);
+ uschar * rsp = sx->buffer;
- if (sx->esmtp_sent && (n = Ustrlen(sx->buffer)) < sizeof(sx->buffer)/2)
- { rsp = sx->buffer + n + 1; n = sizeof(sx->buffer) - n; }
+ if (sx->esmtp_sent && (n = Ustrlen(sx->buffer)) < sizeof(sx->buffer)/2)
+ { rsp = sx->buffer + n + 1; n = sizeof(sx->buffer) - n; }
- if (smtp_write_command(&sx->outblock, SCMD_FLUSH, "HELO %s\r\n", sx->helo_data) < 0)
- goto SEND_FAILED;
- good_response = smtp_read_response(&sx->inblock, rsp, n,
- '2', sx->ob->command_timeout);
+ if (smtp_write_command(sx, SCMD_FLUSH, "HELO %s\r\n", sx->helo_data) < 0)
+ goto SEND_FAILED;
+ good_response = smtp_read_response(sx, rsp, n, '2', ob->command_timeout);
#ifdef EXPERIMENTAL_DSN_INFO
- sx->helo_response = string_copy(rsp);
+ sx->helo_response = string_copy(rsp);
#endif
- if (!good_response)
- {
- /* Handle special logging for a closed connection after HELO
- when had previously sent EHLO */
-
- if (rsp != sx->buffer && rsp[0] == 0 && (errno == 0 || errno == ECONNRESET))
+ if (!good_response)
{
- errno = ERRNO_SMTPCLOSED;
- goto EHLOHELO_FAILED;
+ /* Handle special logging for a closed connection after HELO
+ when had previously sent EHLO */
+
+ if (rsp != sx->buffer && rsp[0] == 0 && (errno == 0 || errno == ECONNRESET))
+ {
+ errno = ERRNO_SMTPCLOSED;
+ goto EHLOHELO_FAILED;
+ }
+ memmove(sx->buffer, rsp, Ustrlen(rsp));
+ goto RESPONSE_FAILED;
}
- memmove(sx->buffer, rsp, Ustrlen(rsp));
- goto RESPONSE_FAILED;
}
- }
-
- sx->avoid_option = sx->peer_offered = smtp_peer_options = 0;
if (sx->esmtp || sx->lmtp)
{
- sx->peer_offered = ehlo_response(sx->buffer,
- OPTION_TLS /* others checked later */
- );
+#ifndef DISABLE_PIPE_CONNECT
+ if (!sx->early_pipe_active)
+#endif
+ {
+ sx->peer_offered = ehlo_response(sx->buffer,
+ OPTION_TLS /* others checked later */
+#ifndef DISABLE_PIPE_CONNECT
+ | (sx->early_pipe_ok
+ ? OPTION_IGNQ
+ | OPTION_CHUNKING | OPTION_PRDR | OPTION_DSN | OPTION_PIPE | OPTION_SIZE
+#ifdef SUPPORT_I18N
+ | OPTION_UTF8
+#endif
+ | OPTION_EARLY_PIPE
+ : 0
+ )
+#endif
+ );
+#ifndef DISABLE_PIPE_CONNECT
+ if (sx->early_pipe_ok)
+ {
+ sx->ehlo_resp.cleartext_features = sx->peer_offered;
+
+ if ( (sx->peer_offered & (OPTION_PIPE | OPTION_EARLY_PIPE))
+ == (OPTION_PIPE | OPTION_EARLY_PIPE))
+ {
+ DEBUG(D_transport) debug_printf("PIPE_CONNECT usable in future for this IP\n");
+ sx->ehlo_resp.cleartext_auths = study_ehlo_auths(sx);
+ write_ehlo_cache_entry(sx);
+ }
+ }
+#endif
+ }
/* Set tls_offered if the response to EHLO specifies support for STARTTLS. */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
smtp_peer_options |= sx->peer_offered & OPTION_TLS;
#endif
}
else
{
- if (cutthrough.fd >= 0 && cutthrough.callout_hold_only)
+ if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only)
{
- sx->inblock.sock = sx->outblock.sock = cutthrough.fd;
- sx->host->port = sx->port = cutthrough.host.port;
+ sx->cctx = cutthrough.cctx;
+ sx->conn_args.host->port = sx->port = cutthrough.host.port;
}
else
{
- sx->inblock.sock = sx->outblock.sock = 0; /* stdin */
- smtp_port_for_connect(sx->host, sx->port); /* Record the port that was used */
+ sx->cctx.sock = 0; /* stdin */
+ sx->cctx.tls_ctx = NULL;
+ smtp_port_for_connect(sx->conn_args.host, sx->port); /* Record the port that was used */
}
+ sx->inblock.cctx = sx->outblock.cctx = &sx->cctx;
smtp_command = big_buffer;
sx->helo_data = NULL; /* ensure we re-expand ob->helo_data */
held-open verify connection with TLS, nothing more to do. */
if ( continue_proxy_cipher
- || (cutthrough.fd >= 0 && cutthrough.callout_hold_only && cutthrough.is_tls)
+ || (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only
+ && cutthrough.is_tls)
)
{
sx->peer_offered = smtp_peer_options;
- pipelining_active = !!(smtp_peer_options & OPTION_PIPE);
+ sx->pipelining_used = pipelining_active = !!(smtp_peer_options & OPTION_PIPE);
HDEBUG(D_transport) debug_printf("continued connection, %s TLS\n",
continue_proxy_cipher ? "proxied" : "verify conn with");
return OK;
the client not be required to use TLS. If the response is bad, copy the buffer
for error analysis. */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if ( smtp_peer_options & OPTION_TLS
&& !suppress_tls
- && verify_check_given_host(&sx->ob->hosts_avoid_tls, sx->host) != OK
+ && verify_check_given_host(CUSS &ob->hosts_avoid_tls, sx->conn_args.host) != OK
&& ( !sx->verify
- || verify_check_given_host(&sx->ob->hosts_verify_avoid_tls, sx->host) != OK
+ || verify_check_given_host(CUSS &ob->hosts_verify_avoid_tls, sx->conn_args.host) != OK
) )
{
uschar buffer2[4096];
- if (smtp_write_command(&sx->outblock, SCMD_FLUSH, "STARTTLS\r\n") < 0)
+
+ if (smtp_write_command(sx, SCMD_FLUSH, "STARTTLS\r\n") < 0)
goto SEND_FAILED;
+#ifndef DISABLE_PIPE_CONNECT
+ /* If doing early-pipelining reap the banner and EHLO-response but leave
+ the response for the STARTTLS we just sent alone. */
+
+ if (sx->early_pipe_active && sync_responses(sx, 2, 0) != 0)
+ {
+ HDEBUG(D_transport)
+ debug_printf("failed reaping pipelined cmd responses\n");
+ goto RESPONSE_FAILED;
+ }
+#endif
+
/* If there is an I/O error, transmission of this message is deferred. If
there is a temporary rejection of STARRTLS and tls_tempfail_tryclear is
false, we also defer. However, if there is a temporary rejection of STARTTLS
STARTTLS, we carry on. This means we will try to send the message in clear,
unless the host is in hosts_require_tls (tested below). */
- if (!smtp_read_response(&sx->inblock, buffer2, sizeof(buffer2), '2',
- sx->ob->command_timeout))
+ if (!smtp_read_response(sx, buffer2, sizeof(buffer2), '2', ob->command_timeout))
{
if ( errno != 0
|| buffer2[0] == 0
- || (buffer2[0] == '4' && !sx->ob->tls_tempfail_tryclear)
+ || (buffer2[0] == '4' && !ob->tls_tempfail_tryclear)
)
{
Ustrncpy(sx->buffer, buffer2, sizeof(sx->buffer));
else
TLS_NEGOTIATE:
{
- address_item * addr;
- uschar * errstr;
- int rc = tls_client_start(sx->inblock.sock, sx->host, sx->addrlist, sx->tblock,
-# ifdef EXPERIMENTAL_DANE
- sx->dane ? &tlsa_dnsa : NULL,
-# endif
- &errstr);
-
- /* 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. */
-
- if (rc != OK)
+ if (!tls_client_start(&sx->cctx, &sx->conn_args, sx->addrlist, &tls_out, &tls_errstr))
{
-# ifdef EXPERIMENTAL_DANE
- if (sx->dane) log_write(0, LOG_MAIN,
+ /* 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
+ DEBUG(D_tls) debug_printf("TLS session fail: %s\n", tls_errstr);
+
+# ifdef SUPPORT_DANE
+ if (sx->conn_args.dane)
+ {
+ log_write(0, LOG_MAIN,
"DANE attempt failed; TLS connection to %s [%s]: %s",
- sx->host->name, sx->host->address, errstr);
+ sx->conn_args.host->name, sx->conn_args.host->address, tls_errstr);
+# ifndef DISABLE_EVENT
+ (void) event_raise(sx->conn_args.tblock->event_action,
+ US"dane:fail", US"validation-failure"); /* could do with better detail */
+# endif
+ }
# endif
errno = ERRNO_TLSFAILURE;
- message = string_sprintf("TLS session: %s", errstr);
+ message = string_sprintf("TLS session: %s", tls_errstr);
sx->send_quit = FALSE;
goto TLS_FAILED;
}
/* TLS session is set up */
smtp_peer_options_wrap = smtp_peer_options;
- for (addr = sx->addrlist; addr; addr = addr->next)
+ for (address_item * addr = sx->addrlist; addr; addr = addr->next)
if (addr->transport_return == PENDING_DEFER)
{
addr->cipher = tls_out.cipher;
addr->peercert = tls_out.peercert;
addr->peerdn = tls_out.peerdn;
addr->ocsp = tls_out.ocsp;
+ addr->tlsver = tls_out.ver;
}
}
}
expand it here. $sending_ip_address and $sending_port are set up right at the
start of the Exim process (in exim.c). */
-if (tls_out.active >= 0)
+if (tls_out.active.sock >= 0)
{
- char *greeting_cmd;
- BOOL good_response;
+ uschar * greeting_cmd;
- if (!sx->helo_data && !(sx->helo_data = expand_string(sx->ob->helo_data)))
+ if (!sx->helo_data && !(sx->helo_data = expand_string(ob->helo_data)))
{
uschar *message = string_sprintf("failed to expand helo_data: %s",
expand_string_message);
goto SEND_QUIT;
}
+#ifndef DISABLE_PIPE_CONNECT
+ /* For SMTPS there is no cleartext early-pipe; use the crypted permission bit.
+ We're unlikely to get the group sent and delivered before the server sends its
+ banner, but it's still worth sending as a group.
+ For STARTTLS allow for cleartext early-pipe but no crypted early-pipe, but not
+ the reverse. */
+
+ if (sx->smtps ? sx->early_pipe_ok : sx->early_pipe_active)
+ {
+ sx->peer_offered = sx->ehlo_resp.crypted_features;
+ if ((sx->early_pipe_active =
+ !!(sx->ehlo_resp.crypted_features & OPTION_EARLY_PIPE)))
+ DEBUG(D_transport) debug_printf("Using cached crypted PIPE_CONNECT\n");
+ }
+#endif
+
/* For SMTPS we need to wait for the initial OK response. */
if (sx->smtps)
- {
- good_response = smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer),
- '2', sx->ob->command_timeout);
-#ifdef EXPERIMENTAL_DSN_INFO
- sx->smtp_greeting = string_copy(sx->buffer);
+#ifndef DISABLE_PIPE_CONNECT
+ if (sx->early_pipe_active)
+ {
+ sx->pending_BANNER = TRUE;
+ sx->outblock.cmd_count = 1;
+ }
+ else
#endif
- if (!good_response) goto RESPONSE_FAILED;
- }
+ if (!smtp_reap_banner(sx))
+ goto RESPONSE_FAILED;
- if (sx->esmtp)
- greeting_cmd = "EHLO";
+ if (sx->lmtp)
+ greeting_cmd = US"LHLO";
+ else if (sx->esmtp)
+ greeting_cmd = US"EHLO";
else
{
- greeting_cmd = "HELO";
+ greeting_cmd = US"HELO";
DEBUG(D_transport)
debug_printf("not sending EHLO (host matches hosts_avoid_esmtp)\n");
}
- if (smtp_write_command(&sx->outblock, SCMD_FLUSH, "%s %s\r\n",
- sx->lmtp ? "LHLO" : greeting_cmd, sx->helo_data) < 0)
+ if (smtp_write_command(sx,
+#ifndef DISABLE_PIPE_CONNECT
+ sx->early_pipe_active ? SCMD_BUFFER :
+#endif
+ SCMD_FLUSH,
+ "%s %s\r\n", greeting_cmd, sx->helo_data) < 0)
goto SEND_FAILED;
- good_response = smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer),
- '2', sx->ob->command_timeout);
-#ifdef EXPERIMENTAL_DSN_INFO
- sx->helo_response = string_copy(sx->buffer);
+
+#ifndef DISABLE_PIPE_CONNECT
+ if (sx->early_pipe_active)
+ sx->pending_EHLO = TRUE;
+ else
#endif
- if (!good_response) goto RESPONSE_FAILED;
- smtp_peer_options = 0;
+ {
+ if (!smtp_reap_ehlo(sx))
+#ifdef USE_GNUTLS
+ {
+ /* The GnuTLS layer in Exim only spots a server-rejection of a client
+ cert late, under TLS1.3 - which means here; the first time we try to
+ receive crypted data. Treat it as if it was a connect-time failure.
+ See also the early-pipe equivalent... which will be hard; every call
+ to sync_responses will need to check the result.
+ It would be nicer to have GnuTLS check the cert during the handshake.
+ Can it do that, with all the flexibility we need? */
+
+ tls_errstr = US"error on first read";
+ goto GNUTLS_CONN_FAILED;
+ }
+#else
+ goto RESPONSE_FAILED;
+#endif
+ smtp_peer_options = 0;
+ }
}
/* If the host is required to use a secure channel, ensure that we
have one. */
else if ( sx->smtps
-# ifdef EXPERIMENTAL_DANE
- || sx->dane
+# ifdef SUPPORT_DANE
+ || sx->conn_args.dane
# endif
- || verify_check_given_host(&sx->ob->hosts_require_tls, sx->host) == OK
+ || verify_check_given_host(CUSS &ob->hosts_require_tls, sx->conn_args.host) == OK
)
{
errno = ERRNO_TLSREQUIRED;
message = string_sprintf("a TLS session is required, but %s",
smtp_peer_options & OPTION_TLS
? "an attempt to start TLS failed" : "the server did not offer TLS support");
+# if defined(SUPPORT_DANE) && !defined(DISABLE_EVENT)
+ if (sx->conn_args.dane)
+ (void) event_raise(sx->conn_args.tblock->event_action, US"dane:fail",
+ smtp_peer_options & OPTION_TLS
+ ? US"validation-failure" /* could do with better detail */
+ : US"starttls-not-supported");
+# endif
goto TLS_FAILED;
}
-#endif /*SUPPORT_TLS*/
+#endif /*DISABLE_TLS*/
/* If TLS is active, we have just started it up and re-done the EHLO command,
so its response needs to be analyzed. If TLS is not active and this is a
we skip this. */
if (continue_hostname == NULL
-#ifdef SUPPORT_TLS
- || tls_out.active >= 0
+#ifndef DISABLE_TLS
+ || tls_out.active.sock >= 0
#endif
)
{
if (sx->esmtp || sx->lmtp)
{
+#ifndef DISABLE_PIPE_CONNECT
+ if (!sx->early_pipe_active)
+#endif
+ {
sx->peer_offered = ehlo_response(sx->buffer,
0 /* no TLS */
- | (sx->lmtp && sx->ob->lmtp_ignore_quota ? OPTION_IGNQ : 0)
+#ifndef DISABLE_PIPE_CONNECT
+ | (sx->lmtp && ob->lmtp_ignore_quota ? OPTION_IGNQ : 0)
+ | OPTION_DSN | OPTION_PIPE | OPTION_SIZE
+ | OPTION_CHUNKING | OPTION_PRDR | OPTION_UTF8
+ | (tls_out.active.sock >= 0 ? OPTION_EARLY_PIPE : 0) /* not for lmtp */
+
+#else
+
+ | (sx->lmtp && ob->lmtp_ignore_quota ? OPTION_IGNQ : 0)
| OPTION_CHUNKING
| OPTION_PRDR
-#ifdef SUPPORT_I18N
+# ifdef SUPPORT_I18N
| (sx->addrlist->prop.utf8_msg ? OPTION_UTF8 : 0)
/*XXX if we hand peercaps on to continued-conn processes,
must not depend on this addr */
-#endif
+# endif
| OPTION_DSN
| OPTION_PIPE
- | (sx->ob->size_addition >= 0 ? OPTION_SIZE : 0)
+ | (ob->size_addition >= 0 ? OPTION_SIZE : 0)
+#endif
);
+#ifndef DISABLE_PIPE_CONNECT
+ if (tls_out.active.sock >= 0)
+ sx->ehlo_resp.crypted_features = sx->peer_offered;
+#endif
+ }
/* Set for IGNOREQUOTA if the response to LHLO specifies support and the
lmtp_ignore_quota option was set. */
the current host matches hosts_avoid_pipelining, don't do it. */
if ( sx->peer_offered & OPTION_PIPE
- && verify_check_given_host(&sx->ob->hosts_avoid_pipelining, sx->host) != OK)
+ && verify_check_given_host(CUSS &ob->hosts_avoid_pipelining, sx->conn_args.host) != OK)
smtp_peer_options |= OPTION_PIPE;
DEBUG(D_transport) debug_printf("%susing PIPELINING\n",
smtp_peer_options & OPTION_PIPE ? "" : "not ");
if ( sx->peer_offered & OPTION_CHUNKING
- && verify_check_given_host(&sx->ob->hosts_try_chunking, sx->host) != OK)
+ && verify_check_given_host(CUSS &ob->hosts_try_chunking, sx->conn_args.host) != OK)
sx->peer_offered &= ~OPTION_CHUNKING;
if (sx->peer_offered & OPTION_CHUNKING)
- {DEBUG(D_transport) debug_printf("CHUNKING usable\n");}
+ DEBUG(D_transport) debug_printf("CHUNKING usable\n");
#ifndef DISABLE_PRDR
if ( sx->peer_offered & OPTION_PRDR
- && verify_check_given_host(&sx->ob->hosts_try_prdr, sx->host) != OK)
+ && verify_check_given_host(CUSS &ob->hosts_try_prdr, sx->conn_args.host) != OK)
sx->peer_offered &= ~OPTION_PRDR;
if (sx->peer_offered & OPTION_PRDR)
- {DEBUG(D_transport) debug_printf("PRDR usable\n");}
+ DEBUG(D_transport) debug_printf("PRDR usable\n");
#endif
/* Note if the server supports DSN */
DEBUG(D_transport) debug_printf("%susing DSN\n",
sx->peer_offered & OPTION_DSN ? "" : "not ");
+#ifndef DISABLE_PIPE_CONNECT
+ if ( sx->early_pipe_ok
+ && !sx->early_pipe_active
+ && tls_out.active.sock >= 0
+ && smtp_peer_options & OPTION_PIPE
+ && ( sx->ehlo_resp.cleartext_features | sx->ehlo_resp.crypted_features)
+ & OPTION_EARLY_PIPE)
+ {
+ DEBUG(D_transport) debug_printf("PIPE_CONNECT usable in future for this IP\n");
+ sx->ehlo_resp.crypted_auths = study_ehlo_auths(sx);
+ write_ehlo_cache_entry(sx);
+ }
+#endif
+
/* Note if the response to EHLO specifies support for the AUTH extension.
If it has, check that this host is one we want to authenticate to, and do
the business. The host name and address must be available when the
authenticator's client driver is running. */
- switch (yield = smtp_auth(sx->buffer, sizeof(sx->buffer), sx->addrlist, sx->host,
- sx->ob, sx->esmtp, &sx->inblock, &sx->outblock))
+ switch (yield = smtp_auth(sx))
{
default: goto SEND_QUIT;
case OK: break;
}
}
}
-pipelining_active = !!(smtp_peer_options & OPTION_PIPE);
+sx->pipelining_used = pipelining_active = !!(smtp_peer_options & OPTION_PIPE);
/* The setting up of the SMTP call is now complete. Any subsequent errors are
message-specific. */
#ifdef SUPPORT_I18N
if (sx->addrlist->prop.utf8_msg)
{
+ uschar * s;
+
+ /* If the transport sets a downconversion mode it overrides any set by ACL
+ for the message. */
+
+ if ((s = ob->utf8_downconvert))
+ {
+ if (!(s = expand_string(s)))
+ {
+ message = string_sprintf("failed to expand utf8_downconvert: %s",
+ expand_string_message);
+ set_errno_nohost(sx->addrlist, ERRNO_EXPANDFAIL, message, DEFER, FALSE);
+ yield = DEFER;
+ goto SEND_QUIT;
+ }
+ switch (*s)
+ {
+ case '1': sx->addrlist->prop.utf8_downcvt = TRUE;
+ sx->addrlist->prop.utf8_downcvt_maybe = FALSE;
+ break;
+ case '0': sx->addrlist->prop.utf8_downcvt = FALSE;
+ sx->addrlist->prop.utf8_downcvt_maybe = FALSE;
+ break;
+ case '-': if (s[1] == '1')
+ {
+ sx->addrlist->prop.utf8_downcvt = FALSE;
+ sx->addrlist->prop.utf8_downcvt_maybe = TRUE;
+ }
+ break;
+ }
+ }
+
sx->utf8_needed = !sx->addrlist->prop.utf8_downcvt
&& !sx->addrlist->prop.utf8_downcvt_maybe;
DEBUG(D_transport) if (!sx->utf8_needed)
errno = ERRNO_UTF8_FWD;
goto RESPONSE_FAILED;
}
-#endif
+#endif /*SUPPORT_I18N*/
return OK;
int code;
RESPONSE_FAILED:
+ if (errno == ECONNREFUSED) /* first-read error on a TFO conn */
+ {
+ /* There is a testing facility for simulating a connection timeout, as I
+ can't think of any other way of doing this. It converts a connection
+ refused into a timeout if the timeout is set to 999999. This is done for
+ a 3whs connection in ip_connect(), but a TFO connection does not error
+ there - instead it gets ECONNREFUSED on the first data read. Tracking
+ that a TFO really was done is too hard, or we would set a
+ sx->pending_conn_done bit and test that in smtp_reap_banner() and
+ smtp_reap_ehlo(). That would let us also add the conn-timeout to the
+ cmd-timeout. */
+
+ if (f.running_in_test_harness && ob->connect_timeout == 999999)
+ errno = ETIMEDOUT;
+ set_errno_nohost(sx->addrlist,
+ errno == ETIMEDOUT ? ERRNO_CONNECTTIMEOUT : errno,
+ sx->verify ? US strerror(errno) : NULL,
+ DEFER, FALSE);
+ sx->send_quit = FALSE;
+ return DEFER;
+ }
+
+ /* really an error on an SMTP read */
message = NULL;
- sx->send_quit = check_response(sx->host, &errno, sx->addrlist->more_errno,
+ sx->send_quit = check_response(sx->conn_args.host, &errno, sx->addrlist->more_errno,
sx->buffer, &code, &message, &pass_message);
+ yield = DEFER;
goto FAILED;
SEND_FAILED:
code = '4';
message = US string_sprintf("send() to %s [%s] failed: %s",
- sx->host->name, sx->host->address, strerror(errno));
+ sx->conn_args.host->name, sx->conn_args.host->address, strerror(errno));
sx->send_quit = FALSE;
+ yield = DEFER;
goto FAILED;
EHLOHELO_FAILED:
message = string_sprintf("Remote host closed connection in response to %s"
" (EHLO response was: %s)", smtp_command, sx->buffer);
sx->send_quit = FALSE;
+ yield = DEFER;
goto FAILED;
/* This label is jumped to directly when a TLS negotiation has failed,
in message and errno, and setting_up will always be true. Treat as
a temporary error. */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
TLS_FAILED:
- code = '4';
+ code = '4', yield = DEFER;
goto FAILED;
#endif
FAILED:
sx->ok = FALSE; /* For when reached by GOTO */
set_errno(sx->addrlist, errno, message,
- sx->host->next
+ sx->conn_args.host->next
? DEFER
: code == '5'
#ifdef SUPPORT_I18N
|| errno == ERRNO_UTF8_FWD
#endif
? FAIL : DEFER,
- pass_message, sx->host
+ pass_message,
+ errno == ECONNREFUSED ? NULL : sx->conn_args.host
#ifdef EXPERIMENTAL_DSN_INFO
, sx->smtp_greeting, sx->helo_response
#endif
);
- yield = DEFER;
}
SEND_QUIT:
if (sx->send_quit)
- (void)smtp_write_command(&sx->outblock, SCMD_FLUSH, "QUIT\r\n");
+ (void)smtp_write_command(sx, SCMD_FLUSH, "QUIT\r\n");
-#ifdef SUPPORT_TLS
-tls_close(FALSE, TRUE);
+#ifndef DISABLE_TLS
+if (sx->cctx.tls_ctx)
+ {
+ tls_close(sx->cctx.tls_ctx, TLS_SHUTDOWN_NOWAIT);
+ sx->cctx.tls_ctx = NULL;
+ }
#endif
/* Close the socket, and return the appropriate value, first setting
HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP(close)>>\n");
if (sx->send_quit)
{
- shutdown(sx->outblock.sock, SHUT_WR);
- if (fcntl(sx->inblock.sock, F_SETFL, O_NONBLOCK) == 0)
- for (rc = 16; read(sx->inblock.sock, sx->inbuffer, sizeof(sx->inbuffer)) > 0 && rc > 0;)
- rc--; /* drain socket */
+ shutdown(sx->cctx.sock, SHUT_WR);
+ if (fcntl(sx->cctx.sock, F_SETFL, O_NONBLOCK) == 0)
+ for (int i = 16; read(sx->cctx.sock, sx->inbuffer, sizeof(sx->inbuffer)) > 0 && i > 0;)
+ i--; /* drain socket */
sx->send_quit = FALSE;
}
-(void)close(sx->inblock.sock);
-sx->inblock.sock = sx->outblock.sock = -1;
+(void)close(sx->cctx.sock);
+sx->cctx.sock = -1;
#ifndef DISABLE_EVENT
-(void) event_raise(sx->tblock->event_action, US"tcp:close", NULL);
+(void) event_raise(sx->conn_args.tblock->event_action, US"tcp:close", NULL);
#endif
continue_transport = NULL;
/*XXX problem here under spool_files_wireformat?
Or just forget about lines? Or inflate by a fixed proportion? */
- sprintf(CS p, " SIZE=%d", message_size+message_linecount+sx->ob->size_addition);
+ sprintf(CS p, " SIZE=%d", message_size+message_linecount+(SOB sx->conn_args.ob)->size_addition);
while (*p) p++;
}
#ifndef DISABLE_PRDR
-/* If it supports Per-Recipient Data Reponses, and we have omre than one recipient,
+/* If it supports Per-Recipient Data Responses, and we have more than one recipient,
request that */
sx->prdr_active = FALSE;
if (sx->peer_offered & OPTION_PRDR)
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
if (addr->transport_return == PENDING_DEFER)
{
for (addr = addr->next; addr; addr = addr->next)
&& addrlist->prop.utf8_msg
&& !addrlist->prop.utf8_downcvt
)
- Ustrcpy(p, " SMTPUTF8"), p += 9;
+ Ustrcpy(p, US" SMTPUTF8"), p += 9;
#endif
/* check if all addresses have DSN-lasthop flag; do not send RET and ENVID if so */
if (sx->peer_offered & OPTION_DSN && !sx->dsn_all_lasthop)
{
if (dsn_ret == dsn_ret_hdrs)
- { Ustrcpy(p, " RET=HDRS"); p += 9; }
+ { Ustrcpy(p, US" RET=HDRS"); p += 9; }
else if (dsn_ret == dsn_ret_full)
- { Ustrcpy(p, " RET=FULL"); p += 9; }
+ { Ustrcpy(p, US" RET=FULL"); p += 9; }
if (dsn_envid)
{
otherwise no check - this feature is expected to be used with LMTP and other
cases where non-standard addresses (e.g. without domains) might be required. */
-if (smtp_mail_auth_str(p, sizeof(sx->buffer) - (p-sx->buffer), addrlist, sx->ob))
+if (smtp_mail_auth_str(p, sizeof(sx->buffer) - (p-sx->buffer), addrlist, sx->conn_args.ob))
return ERROR;
return OK;
{
if (addr->dsn_flags & rf_dsnflags)
{
- int i;
BOOL first = TRUE;
- Ustrcpy(p, " NOTIFY=");
+ Ustrcpy(p, US" NOTIFY=");
while (*p) p++;
- for (i = 0; i < nelem(rf_list); i++) if (addr->dsn_flags & rf_list[i])
+ for (int i = 0; i < nelem(rf_list); i++) if (addr->dsn_flags & rf_list[i])
{
if (!first) *p++ = ',';
first = FALSE;
}
#endif
- rc = smtp_write_command(&sx->outblock, pipelining_active ? SCMD_BUFFER : SCMD_FLUSH,
+ rc = smtp_write_command(sx, pipelining_active ? SCMD_BUFFER : SCMD_FLUSH,
"MAIL FROM:<%s>%s\r\n", s, sx->buffer);
}
return -5;
case +1: /* Cmd was sent */
- if (!smtp_read_response(&sx->inblock, sx->buffer, sizeof(sx->buffer), '2',
- sx->ob->command_timeout))
+ if (!smtp_read_response(sx, sx->buffer, sizeof(sx->buffer), '2',
+ (SOB sx->conn_args.ob)->command_timeout))
{
if (errno == 0 && sx->buffer[0] == '4')
{
BOOL no_flush;
uschar * rcpt_addr;
- if (tcp_out_fastopen && !tcp_out_fastopen_logged)
- {
- setflag(addr, af_tcp_fastopen_conn);
- if (tcp_out_fastopen > 1) setflag(addr, af_tcp_fastopen);
- }
-
addr->dsn_aware = sx->peer_offered & OPTION_DSN
? dsn_support_yes : dsn_support_no;
yield as OK, because this error can often mean that there is a problem with
just one address, so we don't want to delay the host. */
- rcpt_addr = transport_rcpt_address(addr, sx->tblock->rcpt_include_affixes);
+ rcpt_addr = transport_rcpt_address(addr, sx->conn_args.tblock->rcpt_include_affixes);
#ifdef SUPPORT_I18N
if ( testflag(sx->addrlist, af_utf8_downcvt)
}
#endif
- count = smtp_write_command(&sx->outblock, no_flush ? SCMD_BUFFER : SCMD_FLUSH,
+ count = smtp_write_command(sx, no_flush ? SCMD_BUFFER : SCMD_FLUSH,
"RCPT TO:<%s>%s%s\r\n", rcpt_addr, sx->igquotstr, sx->buffer);
if (count < 0) return -5;
case -1: return -3; /* Timeout on RCPT */
case -2: return -2; /* non-MAIL read i/o error */
default: return -1; /* any MAIL error */
+
+#ifndef DISABLE_PIPE_CONNECT
+ case -4: return -1; /* non-2xx for pipelined banner or EHLO */
+ case -5: return -1; /* TLS first-read error */
+#endif
}
sx->pending_MAIL = FALSE; /* Dealt with MAIL */
}
} /* Loop for next address */
-tcp_out_fastopen_logged = TRUE;
sx->next_addr = addr;
return 0;
}
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
/*****************************************************
* Proxy TLS connection for another transport process *
******************************************************/
channels are closed, exit the process.
Arguments:
+ ct_ctx tls context
buf space to use for buffering
bufsiz size of buffer
pfd pipe filedescriptor array; [0] is comms to proxied process
timeout per-read timeout, seconds
+
+Does not return.
*/
void
-smtp_proxy_tls(uschar * buf, size_t bsize, int * pfd, int timeout)
+smtp_proxy_tls(void * ct_ctx, uschar * buf, size_t bsize, int * pfd,
+ int timeout)
{
fd_set rfds, efds;
-int max_fd = MAX(pfd[0], tls_out.active) + 1;
-int rc, i, fd_bits, nbytes;
+int max_fd = MAX(pfd[0], tls_out.active.sock) + 1;
+int rc, i;
close(pfd[1]);
if ((rc = fork()))
_exit(rc < 0 ? EXIT_FAILURE : EXIT_SUCCESS);
}
-if (running_in_test_harness) millisleep(100); /* let parent debug out */
+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, &rfds);
+FD_SET(tls_out.active.sock, &rfds);
FD_SET(pfd[0], &rfds);
-for (fd_bits = 3; fd_bits; )
+for (int fd_bits = 3; fd_bits; )
{
time_t time_left = timeout;
time_t time_start = time(NULL);
goto done;
}
- if (FD_ISSET(tls_out.active, &efds) || FD_ISSET(pfd[0], &efds))
+ if (FD_ISSET(tls_out.active.sock, &efds) || FD_ISSET(pfd[0], &efds))
{
DEBUG(D_transport) debug_printf("select: exceptional cond on %s fd\n",
FD_ISSET(pfd[0], &efds) ? "proxy" : "tls");
goto done;
}
}
- while (rc < 0 || !(FD_ISSET(tls_out.active, &rfds) || FD_ISSET(pfd[0], &rfds)));
+ while (rc < 0 || !(FD_ISSET(tls_out.active.sock, &rfds) || FD_ISSET(pfd[0], &rfds)));
/* handle inbound data */
- if (FD_ISSET(tls_out.active, &rfds))
- if ((rc = tls_read(FALSE, buf, bsize)) <= 0)
+ if (FD_ISSET(tls_out.active.sock, &rfds))
+ if ((rc = tls_read(ct_ctx, buf, bsize)) <= 0)
{
fd_bits &= ~1;
- FD_CLR(tls_out.active, &rfds);
+ FD_CLR(tls_out.active.sock, &rfds);
shutdown(pfd[0], SHUT_WR);
timeout = 5;
}
else
{
- for (nbytes = 0; rc - nbytes > 0; nbytes += i)
+ for (int nbytes = 0; rc - nbytes > 0; nbytes += i)
if ((i = write(pfd[0], buf + nbytes, rc - nbytes)) < 0) goto done;
}
else if (fd_bits & 1)
- FD_SET(tls_out.active, &rfds);
+ FD_SET(tls_out.active.sock, &rfds);
/* handle outbound data */
if (FD_ISSET(pfd[0], &rfds))
if ((rc = read(pfd[0], buf, bsize)) <= 0)
{
fd_bits = 0;
- tls_close(FALSE, TRUE);
+ tls_close(ct_ctx, TLS_SHUTDOWN_NOWAIT);
+ ct_ctx = NULL;
}
else
{
- for (nbytes = 0; rc - nbytes > 0; nbytes += i)
- if ((i = tls_write(FALSE, buf + nbytes, rc - nbytes, FALSE)) < 0)
+ for (int nbytes = 0; rc - nbytes > 0; nbytes += i)
+ if ((i = tls_write(ct_ctx, buf + nbytes, rc - nbytes, FALSE)) < 0)
goto done;
}
else if (fd_bits & 2)
}
done:
- if (running_in_test_harness) millisleep(100); /* let logging complete */
+ testharness_pause_ms(100); /* let logging complete */
exim_exit(0, US"TLS proxy");
}
#endif
uschar *interface, transport_instance *tblock,
BOOL *message_defer, BOOL suppress_tls)
{
-address_item *addr;
+smtp_transport_options_block * ob = SOB tblock->options_block;
int yield = OK;
int save_errno;
int rc;
*message_defer = FALSE;
sx.addrlist = addrlist;
-sx.host = host;
-sx.host_af = host_af,
+sx.conn_args.host = host;
+sx.conn_args.host_af = host_af,
sx.port = defport;
-sx.interface = interface;
+sx.conn_args.interface = interface;
sx.helo_data = NULL;
-sx.tblock = tblock;
+sx.conn_args.tblock = tblock;
sx.verify = FALSE;
+sx.sync_addr = sx.first_addr = addrlist;
/* Get the channel set up ready for a message (MAIL FROM being the next
SMTP command to send */
&& *transport_filter_argv
&& **transport_filter_argv
&& sx.peer_offered & OPTION_CHUNKING
+#ifndef DISABLE_DKIM
+ /* When dkim signing, chunking is handled even with a transport-filter */
+ && !(ob->dkim.dkim_private_key && ob->dkim.dkim_domain && ob->dkim.dkim_selector)
+ && !ob->dkim.force_bodyhash
+#endif
)
{
sx.peer_offered &= ~OPTION_CHUNKING;
}
}
-sx.first_addr = addrlist;
-
/* For messages that have more than the maximum number of envelope recipients,
we want to send several transactions down the same SMTP connection. (See
comments in deliver.c as to how this reconciles, heuristically, with
if (continue_hostname && continue_sequence == 1)
{
- address_item * addr;
-
sx.peer_offered = smtp_peer_options;
sx.pending_MAIL = FALSE;
sx.ok = TRUE;
sx.next_addr = NULL;
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
addr->transport_return = PENDING_OK;
}
else
if ( !(sx.peer_offered & OPTION_CHUNKING)
&& (sx.ok || (pipelining_active && !mua_wrapper)))
{
- int count = smtp_write_command(&sx.outblock, SCMD_FLUSH, "DATA\r\n");
+ int count = smtp_write_command(&sx, SCMD_FLUSH, "DATA\r\n");
if (count < 0) goto SEND_FAILED;
switch(sync_responses(&sx, count, sx.ok ? +1 : -1))
case 1: sx.ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
if (!sx.lmtp) sx.completed_addr = TRUE; /* can't tell about progress yet */
- case 0: break; /* No 2xx or 5xx, but no probs */
+ case 0: break; /* No 2xx or 5xx, but no probs */
+
+ case -1: goto END_OFF; /* Timeout on RCPT */
- case -1: goto END_OFF; /* Timeout on RCPT */
+#ifndef DISABLE_PIPE_CONNECT
+ case -5: /* TLS first-read error */
+ case -4: HDEBUG(D_transport)
+ debug_printf("failed reaping pipelined cmd responses\n");
+#endif
default: goto RESPONSE_FAILED; /* I/O error, or any MAIL/DATA error */
}
pipelining_active = FALSE;
else
{
transport_ctx tctx = {
- {sx.inblock.sock},
- tblock,
- addrlist,
- US".", US"..", /* Escaping strings */
- topt_use_crlf | topt_escape_headers
+ .u = {.fd = sx.cctx.sock}, /*XXX will this need TLS info? */
+ .tblock = tblock,
+ .addr = addrlist,
+ .check_string = US".",
+ .escape_string = US"..", /* Escaping strings */
+ .options =
+ topt_use_crlf | topt_escape_headers
| (tblock->body_only ? topt_no_headers : 0)
| (tblock->headers_only ? topt_no_body : 0)
| (tblock->return_path_add ? topt_add_return_path : 0)
sx.buffer[0] = 0;
sigalrm_seen = FALSE;
- transport_write_timeout = sx.ob->data_timeout;
+ transport_write_timeout = ob->data_timeout;
smtp_command = US"sending data block"; /* For error messages */
DEBUG(D_transport|D_v)
if (sx.peer_offered & OPTION_CHUNKING)
transport_count = 0;
#ifndef DISABLE_DKIM
- sx.ok = dkim_transport_write_message(&tctx, &sx.ob->dkim, CUSS &message);
+ {
+# ifdef MEASURE_TIMING
+ struct timeval t0;
+ gettimeofday(&t0, NULL);
+# endif
+ dkim_exim_sign_init();
+# ifdef EXPERIMENTAL_ARC
+ {
+ uschar * s = ob->arc_sign;
+ if (s)
+ {
+ if (!(ob->dkim.arc_signspec = s = expand_string(s)))
+ {
+ if (!f.expand_string_forcedfail)
+ {
+ message = US"failed to expand arc_sign";
+ sx.ok = FALSE;
+ goto SEND_FAILED;
+ }
+ }
+ else if (*s)
+ {
+ /* Ask dkim code to hash the body for ARC */
+ (void) arc_ams_setup_sign_bodyhash();
+ ob->dkim.force_bodyhash = TRUE;
+ }
+ }
+ }
+# endif
+# ifdef MEASURE_TIMING
+ report_time_since(&t0, US"dkim_exim_sign_init (delta)");
+# endif
+ }
+ sx.ok = dkim_transport_write_message(&tctx, &ob->dkim, CUSS &message);
#else
sx.ok = transport_write_message(&tctx, 0);
#endif
{
case 3: sx.ok = TRUE; /* 2xx & 5xx => OK & progress made */
case 2: sx.completed_addr = TRUE; /* 5xx (only) => progress made */
- break;
+ break;
- case 1: sx.ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
+ case 1: sx.ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
if (!sx.lmtp) sx.completed_addr = TRUE; /* can't tell about progress yet */
- case 0: break; /* No 2xx or 5xx, but no probs */
+ case 0: break; /* No 2xx or 5xx, but no probs */
- case -1: goto END_OFF; /* Timeout on RCPT */
- default: goto RESPONSE_FAILED; /* I/O error, or any MAIL/DATA error */
+ case -1: goto END_OFF; /* Timeout on RCPT */
+
+#ifndef DISABLE_PIPE_CONNECT
+ case -5: /* TLS first-read error */
+ case -4: HDEBUG(D_transport)
+ debug_printf("failed reaping pipelined cmd responses\n");
+#endif
+ default: goto RESPONSE_FAILED; /* I/O error, or any MAIL/DATA error */
}
}
#ifndef DISABLE_PRDR
- /* For PRDR we optionally get a partial-responses warning
- * followed by the individual responses, before going on with
- * the overall response. If we don't get the warning then deal
- * with per non-PRDR. */
+ /* For PRDR we optionally get a partial-responses warning followed by the
+ individual responses, before going on with the overall response. If we don't
+ get the warning then deal with per non-PRDR. */
+
if(sx.prdr_active)
{
- sx.ok = smtp_read_response(&sx.inblock, sx.buffer, sizeof(sx.buffer), '3',
- sx.ob->final_timeout);
+ sx.ok = smtp_read_response(&sx, sx.buffer, sizeof(sx.buffer), '3', ob->final_timeout);
if (!sx.ok && errno == 0) switch(sx.buffer[0])
{
case '2': sx.prdr_active = FALSE;
if (!sx.lmtp)
{
- sx.ok = smtp_read_response(&sx.inblock, sx.buffer, sizeof(sx.buffer), '2',
- sx.ob->final_timeout);
+ sx.ok = smtp_read_response(&sx, sx.buffer, sizeof(sx.buffer), '2',
+ ob->final_timeout);
if (!sx.ok && errno == 0 && sx.buffer[0] == '4')
{
errno = ERRNO_DATA4XX;
/* Process all transported addresses - for LMTP or PRDR, read a status for
each one. */
- for (addr = addrlist; addr != sx.first_addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr != sx.first_addr; addr = addr->next)
{
if (addr->transport_return != PENDING_OK) continue;
if (sx.lmtp)
#endif
{
- if (!smtp_read_response(&sx.inblock, sx.buffer, sizeof(sx.buffer), '2',
- sx.ob->final_timeout))
+ if (!smtp_read_response(&sx, sx.buffer, sizeof(sx.buffer), '2',
+ ob->final_timeout))
{
if (errno != 0 || sx.buffer[0] == 0) goto RESPONSE_FAILED;
addr->message = string_sprintf(
addr->host_used = host;
addr->special_action = flag;
addr->message = conf;
+
+ if (tcp_out_fastopen)
+ {
+ setflag(addr, af_tcp_fastopen_conn);
+ if (tcp_out_fastopen >= TFO_USED_NODATA) setflag(addr, af_tcp_fastopen);
+ if (tcp_out_fastopen >= TFO_USED_DATA) setflag(addr, af_tcp_fastopen_data);
+ }
+ if (sx.pipelining_used) setflag(addr, af_pipelining);
+#ifndef DISABLE_PIPE_CONNECT
+ if (sx.early_pipe_active) setflag(addr, af_early_pipe);
+#endif
#ifndef DISABLE_PRDR
if (sx.prdr_active) setflag(addr, af_prdr_used);
#endif
#ifndef DISABLE_PRDR
if (sx.prdr_active)
{
+ const uschar * overall_message;
+
/* PRDR - get the final, overall response. For any non-success
upgrade all the address statuses. */
- sx.ok = smtp_read_response(&sx.inblock, sx.buffer, sizeof(sx.buffer), '2',
- sx.ob->final_timeout);
+
+ sx.ok = smtp_read_response(&sx, sx.buffer, sizeof(sx.buffer), '2',
+ ob->final_timeout);
if (!sx.ok)
{
if(errno == 0 && sx.buffer[0] == '4')
errno = ERRNO_DATA4XX;
addrlist->more_errno |= ((sx.buffer[1] - '0')*10 + sx.buffer[2] - '0') << 8;
}
- for (addr = addrlist; addr != sx.first_addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr != sx.first_addr; addr = addr->next)
if (sx.buffer[0] == '5' || addr->transport_return == OK)
addr->transport_return = PENDING_OK; /* allow set_errno action */
goto RESPONSE_FAILED;
}
- /* Update the journal, or setup retry. */
- for (addr = addrlist; addr != sx.first_addr; addr = addr->next)
+ /* Append the overall response to the individual PRDR response for logging
+ and update the journal, or setup retry. */
+
+ overall_message = string_printing(sx.buffer);
+ for (address_item * addr = addrlist; addr != sx.first_addr; addr = addr->next)
+ if (addr->transport_return == OK)
+ addr->message = string_sprintf("%s\\n%s", addr->message, overall_message);
+
+ for (address_item * addr = addrlist; addr != sx.first_addr; addr = addr->next)
if (addr->transport_return == OK)
{
if (testflag(addr, af_homonym))
else
{
+#ifndef DISABLE_PIPE_CONNECT
+ /* If we were early-pipelinng and the actual EHLO response did not match
+ the cached value we assumed, we could have detected it and passed a
+ custom errno through to here. It would be nice to RSET and retry right
+ away, but to reliably do that we eould need an extra synch point before
+ we committed to data and that would discard half the gained roundrips.
+ Or we could summarily drop the TCP connection. but that is also ugly.
+ Instead, we ignore the possibility (having freshened the cache) and rely
+ on the server telling us with a nonmessage error if we have tried to
+ do something it no longer supports. */
+#endif
set_rc = DEFER;
yield = (save_errno == ERRNO_CHHEADER_FAIL ||
- save_errno == ERRNO_FILTER_FAIL)? ERROR : DEFER;
+ save_errno == ERRNO_FILTER_FAIL) ? ERROR : DEFER;
}
}
many as to hit the configured limit. The function transport_check_waiting looks
for a waiting message and returns its id. Then transport_pass_socket tries to
set up a continued delivery by passing the socket on to another process. The
-variable send_rset is FALSE if a message has just been successfully transfered.
+variable send_rset is FALSE if a message has just been successfully transferred.
If we are already sending down a continued channel, there may be further
addresses not yet delivered that are aimed at the same host, but which have not
DEBUG(D_transport)
debug_printf("ok=%d send_quit=%d send_rset=%d continue_more=%d "
"yield=%d first_address is %sNULL\n", sx.ok, sx.send_quit,
- sx.send_rset, continue_more, yield, sx.first_addr ? "not " : "");
+ sx.send_rset, f.continue_more, yield, sx.first_addr ? "not " : "");
if (sx.completed_addr && sx.ok && sx.send_quit)
{
t_compare.current_sender_address = sender_address;
if ( sx.first_addr != NULL
- || continue_more
+ || f.continue_more
|| (
-#ifdef SUPPORT_TLS
- ( tls_out.active < 0 && !continue_proxy_cipher
- || verify_check_given_host(&sx.ob->hosts_nopass_tls, host) != OK
+#ifndef DISABLE_TLS
+ ( tls_out.active.sock < 0 && !continue_proxy_cipher
+ || verify_check_given_host(CUSS &ob->hosts_nopass_tls, host) != OK
)
&&
#endif
BOOL pass_message;
if (sx.send_rset)
- if (! (sx.ok = smtp_write_command(&sx.outblock, SCMD_FLUSH, "RSET\r\n") >= 0))
+ if (! (sx.ok = smtp_write_command(&sx, SCMD_FLUSH, "RSET\r\n") >= 0))
{
msg = US string_sprintf("send() to %s [%s] failed: %s", host->name,
host->address, strerror(errno));
sx.send_quit = FALSE;
}
- else if (! (sx.ok = smtp_read_response(&sx.inblock, sx.buffer,
- sizeof(sx.buffer), '2', sx.ob->command_timeout)))
+ else if (! (sx.ok = smtp_read_response(&sx, sx.buffer, sizeof(sx.buffer),
+ '2', ob->command_timeout)))
{
int code;
sx.send_quit = check_response(host, &errno, 0, sx.buffer, &code, &msg,
if (sx.ok)
{
+#ifndef DISABLE_TLS
int pfd[2];
- int socket_fd = sx.inblock.sock;
+#endif
+ int socket_fd = sx.cctx.sock;
if (sx.first_addr != NULL) /* More addresses still to be sent */
transport_pass_socket). If the caller has more ready, just return with
the connection still open. */
-#ifdef SUPPORT_TLS
- if (tls_out.active >= 0)
- if ( continue_more
- || verify_check_given_host(&sx.ob->hosts_noproxy_tls, host) == OK)
+#ifndef DISABLE_TLS
+ if (tls_out.active.sock >= 0)
+ if ( f.continue_more
+ || verify_check_given_host(CUSS &ob->hosts_noproxy_tls, host) == OK)
{
/* Before passing the socket on, or returning to caller with it still
open, we must shut down TLS. Not all MTAs allow for the continuation
a new EHLO. If we don't get a good response, we don't attempt to pass
the socket on. */
- tls_close(FALSE, TRUE);
+ tls_close(sx.cctx.tls_ctx, TLS_SHUTDOWN_WAIT);
+ sx.cctx.tls_ctx = NULL;
smtp_peer_options = smtp_peer_options_wrap;
sx.ok = !sx.smtps
- && smtp_write_command(&sx.outblock, SCMD_FLUSH,
- "EHLO %s\r\n", sx.helo_data) >= 0
- && smtp_read_response(&sx.inblock, sx.buffer, sizeof(sx.buffer),
- '2', sx.ob->command_timeout);
+ && smtp_write_command(&sx, SCMD_FLUSH, "EHLO %s\r\n", sx.helo_data)
+ >= 0
+ && smtp_read_response(&sx, sx.buffer, sizeof(sx.buffer),
+ '2', ob->command_timeout);
- if (sx.ok && continue_more)
+ if (sx.ok && f.continue_more)
return yield; /* More addresses for another run */
}
else
/* Set up a pipe for proxying TLS for the new transport process */
smtp_peer_options |= OPTION_TLS;
- if (sx.ok = (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) == 0))
+ if ((sx.ok = socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) == 0))
socket_fd = pfd[1];
else
set_errno(sx.first_addr, errno, US"internal allocation problem",
}
else
#endif
- if (continue_more)
+ if (f.continue_more)
return yield; /* More addresses for another run */
/* If the socket is successfully passed, we mustn't send QUIT (or
just passed the baton to. Fork a child to to do it, and return to
get logging done asap. Which way to place the work makes assumptions
about post-fork prioritisation which may not hold on all platforms. */
-#ifdef SUPPORT_TLS
- if (tls_out.active >= 0)
+#ifndef DISABLE_TLS
+ if (tls_out.active.sock >= 0)
{
int pid = fork();
if (pid == 0) /* child; fork again to disconnect totally */
{
- if (running_in_test_harness) millisleep(100); /* let parent debug out */
+ testharness_pause_ms(100); /* let parent debug out */
/* does not return */
- smtp_proxy_tls(sx.buffer, sizeof(sx.buffer), pfd,
- sx.ob->command_timeout);
+ smtp_proxy_tls(sx.cctx.tls_ctx, sx.buffer, sizeof(sx.buffer), pfd,
+ ob->command_timeout);
}
if (pid > 0) /* parent */
close(pfd[0]);
/* tidy the inter-proc to disconn the proxy proc */
waitpid(pid, NULL, 0);
- tls_close(FALSE, FALSE);
- (void)close(sx.inblock.sock);
+ tls_close(sx.cctx.tls_ctx, TLS_NO_SHUTDOWN);
+ sx.cctx.tls_ctx = NULL;
+ (void)close(sx.cctx.sock);
+ sx.cctx.sock = -1;
continue_transport = NULL;
continue_hostname = NULL;
return yield;
operation, the old commented-out code was removed on 17-Sep-99. */
SEND_QUIT:
-if (sx.send_quit) (void)smtp_write_command(&sx.outblock, SCMD_FLUSH, "QUIT\r\n");
+#ifdef TCP_CORK
+(void) setsockopt(sx.cctx.sock, IPPROTO_TCP, TCP_CORK, US &on, sizeof(on));
+#endif
+if (sx.send_quit) (void)smtp_write_command(&sx, SCMD_FLUSH, "QUIT\r\n");
END_OFF:
-#ifdef SUPPORT_TLS
-tls_close(FALSE, TRUE);
+#ifndef DISABLE_TLS
+tls_close(sx.cctx.tls_ctx, TLS_SHUTDOWN_NOWAIT);
+sx.cctx.tls_ctx = NULL;
#endif
/* Close the socket, and return the appropriate value, first setting
HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP(close)>>\n");
if (sx.send_quit)
{
- shutdown(sx.outblock.sock, SHUT_WR);
- if (fcntl(sx.inblock.sock, F_SETFL, O_NONBLOCK) == 0)
- for (rc = 16; read(sx.inblock.sock, sx.inbuffer, sizeof(sx.inbuffer)) > 0 && rc > 0;)
- rc--; /* drain socket */
+ shutdown(sx.cctx.sock, SHUT_WR);
+ millisleep(20);
+ testharness_pause_ms(200);
+ if (fcntl(sx.cctx.sock, F_SETFL, O_NONBLOCK) == 0)
+ for (int i = 16; read(sx.cctx.sock, sx.inbuffer, sizeof(sx.inbuffer)) > 0 && i > 0;)
+ i--; /* drain socket */
}
-(void)close(sx.inblock.sock);
+(void)close(sx.cctx.sock);
#ifndef DISABLE_EVENT
(void) event_raise(tblock->event_action, US"tcp:close", NULL);
void
smtp_transport_closedown(transport_instance *tblock)
{
-smtp_transport_options_block *ob =
- (smtp_transport_options_block *)tblock->options_block;
-smtp_inblock inblock;
-smtp_outblock outblock;
+smtp_transport_options_block * ob = SOB tblock->options_block;
+client_conn_ctx cctx;
+smtp_context sx;
uschar buffer[256];
uschar inbuffer[4096];
uschar outbuffer[16];
-inblock.sock = fileno(stdin);
-inblock.buffer = inbuffer;
-inblock.buffersize = sizeof(inbuffer);
-inblock.ptr = inbuffer;
-inblock.ptrend = inbuffer;
-
-outblock.sock = inblock.sock;
-outblock.buffersize = sizeof(outbuffer);
-outblock.buffer = outbuffer;
-outblock.ptr = outbuffer;
-outblock.cmd_count = 0;
-outblock.authenticating = FALSE;
-
-(void)smtp_write_command(&outblock, SCMD_FLUSH, "QUIT\r\n");
-(void)smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
- ob->command_timeout);
-(void)close(inblock.sock);
+/*XXX really we need an active-smtp-client ctx, rather than assuming stdout */
+cctx.sock = fileno(stdin);
+cctx.tls_ctx = cctx.sock == tls_out.active.sock ? tls_out.active.tls_ctx : NULL;
+
+sx.inblock.cctx = &cctx;
+sx.inblock.buffer = inbuffer;
+sx.inblock.buffersize = sizeof(inbuffer);
+sx.inblock.ptr = inbuffer;
+sx.inblock.ptrend = inbuffer;
+
+sx.outblock.cctx = &cctx;
+sx.outblock.buffersize = sizeof(outbuffer);
+sx.outblock.buffer = outbuffer;
+sx.outblock.ptr = outbuffer;
+sx.outblock.cmd_count = 0;
+sx.outblock.authenticating = FALSE;
+
+(void)smtp_write_command(&sx, SCMD_FLUSH, "QUIT\r\n");
+(void)smtp_read_response(&sx, buffer, sizeof(buffer), '2', ob->command_timeout);
+(void)close(cctx.sock);
}
prepare_addresses(address_item *addrlist, host_item *host)
{
address_item *first_addr = NULL;
-address_item *addr;
-for (addr = addrlist; addr; addr = addr->next)
+for (address_item * addr = addrlist; addr; addr = addr->next)
if (addr->transport_return == DEFER)
{
if (!first_addr) first_addr = addr;
addr->basic_errno = 0;
addr->more_errno = (host->mx >= 0)? 'M' : 'A';
addr->message = NULL;
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
addr->cipher = NULL;
addr->ourcert = NULL;
addr->peercert = NULL;
addr->peerdn = NULL;
addr->ocsp = OCSP_NOT_REQ;
+ addr->tlsver = NULL;
#endif
#ifdef EXPERIMENTAL_DSN_INFO
addr->smtp_greeting = NULL;
transport_instance *tblock, /* data for this instantiation */
address_item *addrlist) /* addresses we are working on */
{
-int cutoff_retry;
int defport;
int hosts_defer = 0;
int hosts_fail = 0;
int hosts_serial = 0;
int hosts_total = 0;
int total_hosts_tried = 0;
-address_item *addr;
BOOL expired = TRUE;
uschar *expanded_hosts = NULL;
uschar *pistring;
uschar *tid = string_sprintf("%s transport", tblock->name);
-smtp_transport_options_block *ob =
- (smtp_transport_options_block *)(tblock->options_block);
+smtp_transport_options_block *ob = SOB tblock->options_block;
host_item *hostlist = addrlist->host_list;
-host_item *host;
+host_item *host = NULL;
DEBUG(D_transport)
{
debug_printf("%s transport entered\n", tblock->name);
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
debug_printf(" %s\n", addr->address);
if (hostlist)
{
debug_printf("hostlist:\n");
- for (host = hostlist; host; host = host->next)
+ for (host_item * host = hostlist; host; host = host->next)
debug_printf(" '%s' IP %s port %d\n", host->name, host->address, host->port);
}
if (continue_hostname)
debug_printf("already connected to %s [%s] (on fd %d)\n",
continue_hostname, continue_host_address,
- cutthrough.fd >= 0 ? cutthrough.fd : 0);
+ cutthrough.cctx.sock >= 0 ? cutthrough.cctx.sock : 0);
}
/* Set the flag requesting that these hosts be added to the waiting
{
addrlist->message = string_sprintf("failed to expand list of hosts "
"\"%s\" in %s transport: %s", s, tblock->name, expand_string_message);
- addrlist->transport_return = search_find_defer ? DEFER : PANIC;
+ addrlist->transport_return = f.search_find_defer ? DEFER : PANIC;
return FALSE; /* Only top address has status */
}
DEBUG(D_transport) debug_printf("expanded list of hosts \"%s\" to "
else
if (ob->hosts_randomize) s = expanded_hosts = string_copy(s);
+ if (is_tainted(s))
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "attempt to use tainted host list '%s' from '%s' in transport %s",
+ s, ob->hosts, tblock->name);
+ /* Avoid leaking info to an attacker */
+ addrlist->message = US"internal configuration error";
+ addrlist->transport_return = PANIC;
+ return FALSE;
+ }
+
host_build_hostlist(&hostlist, s, ob->hosts_randomize);
/* Check that the expansion yielded something useful. */
time. After that, set the status and error data for any addresses that haven't
had it set already. */
-for (cutoff_retry = 0;
+for (int cutoff_retry = 0;
expired && cutoff_retry < (ob->delay_after_cutoff ? 1 : 2);
cutoff_retry++)
{
{
int rc;
int host_af;
- uschar *rs;
BOOL host_is_expired = FALSE;
BOOL message_defer = FALSE;
BOOL some_deferred = FALSE;
if (!host->address)
{
int new_port, flags;
- host_item *hh;
if (host->status >= hstatus_unusable)
{
/* Update the host (and any additional blocks, resulting from
multihoming) with a host-specific port, if any. */
- for (hh = host; hh != nexthost; hh = hh->next) hh->port = new_port;
+ for (host_item * hh = host; hh != nexthost; hh = hh->next) hh->port = new_port;
/* Failure to find the host at this time (usually DNS temporary failure)
is really a kind of routing failure rather than a transport failure.
"HOST_FIND_AGAIN" : "HOST_FIND_FAILED", host->name);
host->status = hstatus_unusable;
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
{
if (addr->transport_return != DEFER) continue;
addr->basic_errno = ERRNO_UNKNOWNHOST;
if (rc == HOST_FOUND_LOCAL && !ob->allow_localhost)
{
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
{
addr->basic_errno = 0;
addr->message = string_sprintf("%s transport found host %s to be "
were not in it. We don't want to hold up all SMTP deliveries! Except when
doing a two-stage queue run, don't do this if forcing. */
- if ((!deliver_force || queue_2stage) && (queue_smtp ||
+ if ((!f.deliver_force || f.queue_2stage) && (f.queue_smtp ||
match_isinlist(addrlist->domain,
(const uschar **)&queue_smtp_domains, 0,
&domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK))
{
expired = FALSE;
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
if (addr->transport_return == DEFER)
addr->message = US"domain matches queue_smtp_domains, or -odqs set";
continue; /* With next host */
treated separately. */
host_af = Ustrchr(host->address, ':') == NULL ? AF_INET : AF_INET6;
- if ((rs = ob->interface) && *rs)
{
- if (!smtp_get_interface(rs, host_af, addrlist, &interface, tid))
- return FALSE;
- pistring = string_sprintf("%s/%s", pistring, interface);
+ uschar * s = ob->interface;
+ if (s && *s)
+ {
+ if (!smtp_get_interface(s, host_af, addrlist, &interface, tid))
+ return FALSE;
+ pistring = string_sprintf("%s/%s", pistring, interface);
+ }
}
/* The first time round the outer loop, check the status of the host by
incl_ip, &retry_host_key, &retry_message_key);
DEBUG(D_transport) debug_printf("%s [%s]%s retry-status = %s\n", host->name,
- (host->address == NULL)? US"" : host->address, pistring,
- (host->status == hstatus_usable)? "usable" :
- (host->status == hstatus_unusable)? "unusable" :
- (host->status == hstatus_unusable_expired)? "unusable (expired)" : "?");
+ host->address ? host->address : US"", pistring,
+ host->status == hstatus_usable ? "usable"
+ : host->status == hstatus_unusable ? "unusable"
+ : host->status == hstatus_unusable_expired ? "unusable (expired)" : "?");
/* Skip this address if not usable at this time, noting if it wasn't
actually expired, both locally and in the address. */
sending the message down a pre-existing connection. */
if ( !continue_hostname
- && verify_check_given_host(&ob->serialize_hosts, host) == OK)
+ && verify_check_given_host(CUSS &ob->serialize_hosts, host) == OK)
{
serialize_key = string_sprintf("host-serialize-%s", host->name);
if (!enq_start(serialize_key, 1))
message_id, host->name, host->address, addrlist->address,
addrlist->next ? ", ..." : "");
- set_process_info("delivering %s to %s [%s] (%s%s)",
- message_id, host->name, host->address, addrlist->address,
+ set_process_info("delivering %s to %s [%s]%s (%s%s)",
+ message_id, host->name, host->address, pistring, addrlist->address,
addrlist->next ? ", ..." : "");
/* This is not for real; don't do the delivery. If there are
any remaining hosts, list them. */
- if (dont_deliver)
+ if (f.dont_deliver)
{
- host_item *host2;
set_errno_nohost(addrlist, 0, NULL, OK, FALSE);
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
{
addr->host_used = host;
addr->special_action = '*';
{
debug_printf("*** delivery by %s transport bypassed by -N option\n"
"*** host and remaining hosts:\n", tblock->name);
- for (host2 = host; host2; host2 = host2->next)
+ for (host_item * host2 = host; host2; host2 = host2->next)
debug_printf(" %s [%s]\n", host2->name,
host2->address ? host2->address : US"unset");
}
if (expanded_hosts)
{
- thost = store_get(sizeof(host_item));
+ thost = store_get(sizeof(host_item), FALSE);
*thost = *host;
thost->name = string_copy(host->name);
thost->address = string_copy(host->address);
if (!host_is_expired && ++unexpired_hosts_tried >= ob->hosts_max_try)
{
- host_item *h;
DEBUG(D_transport)
debug_printf("hosts_max_try limit reached with this host\n");
- for (h = host; h; h = h->next) if (h->mx != host->mx)
+ for (host_item * h = host; h; h = h->next) if (h->mx != host->mx)
{
nexthost = h;
unexpired_hosts_tried--;
session, so the in-clear transmission after those errors, if permitted,
happens inside smtp_deliver().] */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if ( rc == DEFER
&& first_addr->basic_errno == ERRNO_TLSFAILURE
&& ob->tls_tempfail_tryclear
- && verify_check_given_host(&ob->hosts_require_tls, host) != OK
+ && verify_check_given_host(CUSS &ob->hosts_require_tls, host) != OK
)
{
log_write(0, LOG_MAIN,
deferred_event_raise(first_addr, host);
# endif
}
-#endif /*SUPPORT_TLS*/
+#endif /*DISABLE_TLS*/
}
/* Delivery attempt finished */
- rs = rc == OK ? US"OK"
- : rc == DEFER ? US"DEFER"
- : rc == ERROR ? US"ERROR"
- : US"?";
-
- set_process_info("delivering %s: just tried %s [%s] for %s%s: result %s",
- message_id, host->name, host->address, addrlist->address,
- addrlist->next ? " (& others)" : "", rs);
+ set_process_info("delivering %s: just tried %s [%s]%s for %s%s: result %s",
+ message_id, host->name, host->address, pistring, addrlist->address,
+ addrlist->next ? " (& others)" : "", rc_to_string(rc));
/* Release serialization if set up */
case, see if any of them are deferred. */
if (rc == OK)
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
if (addr->transport_return == DEFER)
{
some_deferred = TRUE;
"hosts_max_try (message older than host's retry time)\n");
}
}
+
+ DEBUG(D_transport)
+ {
+ if (unexpired_hosts_tried >= ob->hosts_max_try)
+ debug_printf("reached transport hosts_max_try limit %d\n",
+ ob->hosts_max_try);
+ if (total_hosts_tried >= ob->hosts_max_try_hardlimit)
+ debug_printf("reached transport hosts_max_try_hardlimit limit %d\n",
+ ob->hosts_max_try_hardlimit);
+ }
+
+ testharness_pause_ms(500); /* let server debug out */
} /* End of loop for trying multiple hosts. */
/* If we failed to find a matching host in the list, for an already-open
if (continue_hostname && !continue_host_tried)
{
- int fd = cutthrough.fd >= 0 ? cutthrough.fd : 0;
+ int fd = cutthrough.cctx.sock >= 0 ? cutthrough.cctx.sock : 0;
DEBUG(D_transport) debug_printf("no hosts match already-open connection\n");
-#ifdef SUPPORT_TLS
- if (tls_out.active == fd)
+#ifndef DISABLE_TLS
+ /* A TLS conn could be open for a cutthrough, but not for a plain continued-
+ transport */
+/*XXX doublecheck that! */
+
+ if (cutthrough.cctx.sock >= 0 && cutthrough.is_tls)
{
- (void) tls_write(FALSE, US"QUIT\r\n", 6, FALSE);
- tls_close(FALSE, TRUE);
+ (void) tls_write(cutthrough.cctx.tls_ctx, US"QUIT\r\n", 6, FALSE);
+ tls_close(cutthrough.cctx.tls_ctx, TLS_SHUTDOWN_NOWAIT);
+ cutthrough.cctx.tls_ctx = NULL;
+ cutthrough.is_tls = FALSE;
}
else
#else
(void) write(fd, US"QUIT\r\n", 6);
#endif
(void) close(fd);
- cutthrough.fd = -1;
+ cutthrough.cctx.sock = -1;
continue_hostname = NULL;
goto retry_non_continued;
}
if (mua_wrapper)
{
- for (addr = addrlist; addr; addr = addr->next)
+ for (address_item * addr = addrlist; addr; addr = addr->next)
addr->transport_return = FAIL;
goto END_TRANSPORT;
}
down an existing TCP/IP connection, and something caused the host not to be
found, we end up here, but can detect these cases and handle them specially. */
-for (addr = addrlist; addr; addr = addr->next)
+for (address_item * addr = addrlist; addr; addr = addr->next)
{
/* If host is not NULL, it means that we stopped processing the host list
because of hosts_max_try or hosts_max_try_hardlimit. In the former case, this
setflag(addr, af_retry_skipped);
}
- if (queue_smtp) /* no deliveries attempted */
+ if (f.queue_smtp) /* no deliveries attempted */
{
addr->transport_return = DEFER;
addr->basic_errno = 0;
git://git.exim.org / exim.git / blobdiff