1/*
2 * Copyright (c) 1998-2006 Sendmail, Inc. and its suppliers.
3 * All rights reserved.
4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
5 * Copyright (c) 1988, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * By using this file, you agree to the terms and conditions set
9 * forth in the LICENSE file which can be found at the top level of
10 * the sendmail distribution.
11 *
12 */
13
14#include <sendmail.h>
15
16SM_RCSID("@(#)$Id: usersmtp.c,v 8.467 2006/03/19 06:07:56 ca Exp $")
17
18#include <sysexits.h>
19
20
21static void esmtp_check __P((char *, bool, MAILER *, MCI *, ENVELOPE *));
22static void helo_options __P((char *, bool, MAILER *, MCI *, ENVELOPE *));
23static int smtprcptstat __P((ADDRESS *, MAILER *, MCI *, ENVELOPE *));
24
25#if SASL
26extern void *sm_sasl_malloc __P((unsigned long));
27extern void sm_sasl_free __P((void *));
28#endif /* SASL */
29
30/*
31** USERSMTP -- run SMTP protocol from the user end.
32**
33** This protocol is described in RFC821.
34*/
35
36#define REPLYCLASS(r) (((r) / 10) % 10) /* second digit of reply code */
37#define SMTPCLOSING 421 /* "Service Shutting Down" */
38
39#define ENHSCN(e, d) ((e) == NULL ? (d) : (e))
40
41#define ENHSCN_RPOOL(e, d, rpool) \
42 ((e) == NULL ? (d) : sm_rpool_strdup_x(rpool, e))
43

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2484** m -- mailer being sent to.
2485** mci -- the mailer connection information.
2486** e -- the envelope for this message.
2487**
2488** Returns:
2489** exit status corresponding to DATA command.
2490*/
2491
2492int
2493smtpdata(m, mci, e, ctladdr, xstart)
2494 MAILER *m;
2495 register MCI *mci;
2496 register ENVELOPE *e;
2497 ADDRESS *ctladdr;
2498 time_t xstart;
2499{
2500 register int r;
2501 int rstat;
2502 int xstat;
2503 int timeout;
2504 char *enhsc;
2505
2506 /*
2507 ** Check if connection is gone, if so
2508 ** it's a tempfail and we use mci_errno
2509 ** for the reason.
2510 */
2511

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2619#endif /* PIPELINING */
2620
2621 /*
2622 ** Set timeout around data writes. Make it at least large
2623 ** enough for DNS timeouts on all recipients plus some fudge
2624 ** factor. The main thing is that it should not be infinite.
2625 */
2626
2627 if (tTd(18, 101))
2628 {
2629 /* simulate a DATA timeout */
2630 timeout = 10;
2631 }
2632 else
2633 timeout = DATA_PROGRESS_TIMEOUT * 1000;
2634 sm_io_setinfo(mci->mci_out, SM_IO_WHAT_TIMEOUT, &timeout);
2635
2636
2637 /*
2638 ** Output the actual message.
2639 */
2640
2641 if (!(*e->e_puthdr)(mci, e->e_header, e, M87F_OUTER))
2642 goto writeerr;
2643
2644 if (tTd(18, 101))
2645 {
2646 /* simulate a DATA timeout */
2647 (void) sleep(2);
2648 }
2649
2650 if (!(*e->e_putbody)(mci, e, NULL))
2651 goto writeerr;
2652
2653 /*
2654 ** Cleanup after sending message.
2655 */
2656
2657
2658#if PIPELINING
2659 }
2660#endif /* PIPELINING */
2661
2662#if _FFR_CATCH_BROKEN_MTAS
2663 if (sm_io_getinfo(mci->mci_in, SM_IO_IS_READABLE, NULL) > 0)
2664 {

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2688 mci->mci_errno = EIO;
2689 mci->mci_state = MCIS_ERROR;
2690 mci_setstat(mci, EX_IOERR, "4.4.2", NULL);
2691 smtpquit(m, mci, e);
2692 return EX_IOERR;
2693 }
2694
2695 /* terminate the message */
2696 if (sm_io_fprintf(mci->mci_out, SM_TIME_DEFAULT, ".%s", m->m_eol) ==
2697 SM_IO_EOF)
2698 goto writeerr;
2699 if (TrafficLogFile != NULL)
2700 (void) sm_io_fprintf(TrafficLogFile, SM_TIME_DEFAULT,
2701 "%05d >>> .\n", (int) CurrentPid);
2702 if (Verbose)
2703 nmessage(">>> .");
2704
2705 /* check for the results of the transaction */
2706 SmtpPhase = mci->mci_phase = "client DATA status";

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2741 if (LogLevel > 1)
2742 {
2743 sm_syslog(LOG_CRIT, e->e_id,
2744 "%.100s: SMTP DATA-2 protocol error: %s",
2745 CurHostName,
2746 shortenstring(SmtpReplyBuffer, 403));
2747 }
2748 return rstat;
2749
2750 writeerr:
2751 mci->mci_errno = errno;
2752 mci->mci_state = MCIS_ERROR;
2753 mci_setstat(mci, EX_TEMPFAIL, "4.4.2", NULL);
2754
2755 /*
2756 ** If putbody() couldn't finish due to a timeout,
2757 ** rewind it here in the timeout handler. See
2758 ** comments at the end of putbody() for reasoning.
2759 */
2760
2761 if (e->e_dfp != NULL)
2762 (void) bfrewind(e->e_dfp);
2763
2764 errno = mci->mci_errno;
2765 syserr("451 4.4.1 timeout writing message to %s", CurHostName);
2766 smtpquit(m, mci, e);
2767 return EX_TEMPFAIL;
2768}
2769
2770/*
2771** SMTPGETSTAT -- get status code from DATA in LMTP
2772**
2773** Parameters:
2774** m -- the mailer to which we are sending the message.
2775** mci -- the mailer connection structure.
2776** e -- the current envelope.
2777**

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2967 ** However, if 421 is returned for the RSET, leave
2968 ** mci_state alone (MCIS_SSD can be set in reply()
2969 ** and MCIS_CLOSED can be set in smtpquit() if
2970 ** reply() gets a 421 and calls smtpquit()).
2971 */
2972
2973 if (mci->mci_state != MCIS_SSD && mci->mci_state != MCIS_CLOSED)
2974 mci->mci_state = MCIS_OPEN;
2975 else if (mci->mci_exitstat == EX_OK)
2976 mci_setstat(mci, EX_TEMPFAIL, "4.5.0", NULL);
2977}
2978/*
2979** SMTPPROBE -- check the connection state
2980**
2981** Parameters:
2982** mci -- the mailer connection information.
2983**
2984** Returns:

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