/*
* Copyright (c) 1998-2003, 2006 Proofpoint, Inc. and its suppliers.
* All rights reserved.
* Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*
*/
#include <sendmail.h>
SM_RCSID("@(#)$Id: envelope.c,v 8.313 2013-11-22 20:51:55 ca Exp $")
/*
** CLRSESSENVELOPE -- clear session oriented data in an envelope
**
** Parameters:
** e -- the envelope to clear.
**
** Returns:
** none.
*/
void
clrsessenvelope(e)
ENVELOPE *e;
{
#if SASL
macdefine(&e->e_macro, A_PERM, macid("{auth_type}"), "");
macdefine(&e->e_macro, A_PERM, macid("{auth_authen}"), "");
macdefine(&e->e_macro, A_PERM, macid("{auth_author}"), "");
macdefine(&e->e_macro, A_PERM, macid("{auth_ssf}"), "");
#endif /* SASL */
#if STARTTLS
macdefine(&e->e_macro, A_PERM, macid("{cert_issuer}"), "");
macdefine(&e->e_macro, A_PERM, macid("{cert_subject}"), "");
macdefine(&e->e_macro, A_PERM, macid("{cipher_bits}"), "");
macdefine(&e->e_macro, A_PERM, macid("{cipher}"), "");
macdefine(&e->e_macro, A_PERM, macid("{tls_version}"), "");
macdefine(&e->e_macro, A_PERM, macid("{verify}"), "");
macdefine(&e->e_macro, A_PERM, macid("{alg_bits}"), "");
macdefine(&e->e_macro, A_PERM, macid("{cn_issuer}"), "");
macdefine(&e->e_macro, A_PERM, macid("{cn_subject}"), "");
#endif /* STARTTLS */
}
/*
** NEWENVELOPE -- fill in a new envelope
**
** Supports inheritance.
**
** Parameters:
** e -- the new envelope to fill in.
** parent -- the envelope to be the parent of e.
** rpool -- either NULL, or a pointer to a resource pool
** from which envelope memory is allocated, and
** to which envelope resources are attached.
**
** Returns:
** e.
**
** Side Effects:
** none.
*/
ENVELOPE *
newenvelope(e, parent, rpool)
register ENVELOPE *e;
register ENVELOPE *parent;
SM_RPOOL_T *rpool;
{
int sendmode;
/*
** This code used to read:
** if (e == parent && e->e_parent != NULL)
** parent = e->e_parent;
** So if e == parent && e->e_parent == NULL then we would
** set e->e_parent = e, which creates a loop in the e_parent chain.
** This meant macvalue() could go into an infinite loop.
*/
if (parent != NULL)
sendmode = parent->e_sendmode;
else
sendmode = DM_NOTSET;
if (e == parent)
parent = e->e_parent;
clearenvelope(e, true, rpool);
if (e == CurEnv)
memmove((char *) &e->e_from,
(char *) &NullAddress,
sizeof(e->e_from));
else
memmove((char *) &e->e_from,
(char *) &CurEnv->e_from,
sizeof(e->e_from));
e->e_parent = parent;
assign_queueid(e);
e->e_ctime = curtime();
#if _FFR_SESSID
e->e_sessid = e->e_id;
#endif
if (parent != NULL)
{
e->e_msgpriority = parent->e_msgsize;
#if _FFR_SESSID
if (parent->e_sessid != NULL)
e->e_sessid = sm_rpool_strdup_x(rpool,
parent->e_sessid);
#endif
if (parent->e_quarmsg == NULL)
{
e->e_quarmsg = NULL;
macdefine(&e->e_macro, A_PERM,
macid("{quarantine}"), "");
}
else
{
e->e_quarmsg = sm_rpool_strdup_x(rpool,
parent->e_quarmsg);
macdefine(&e->e_macro, A_PERM,
macid("{quarantine}"), e->e_quarmsg);
}
}
e->e_puthdr = putheader;
e->e_putbody = putbody;
if (CurEnv->e_xfp != NULL)
(void) sm_io_flush(CurEnv->e_xfp, SM_TIME_DEFAULT);
if (sendmode != DM_NOTSET)
set_delivery_mode(sendmode, e);
return e;
}
/* values for msg_timeout, see also IS_* below for usage (bit layout) */
#define MSG_T_O 0x01 /* normal timeout */
#define MSG_T_O_NOW 0x02 /* NOW timeout */
#define MSG_NOT_BY 0x04 /* Deliver-By time exceeded, mode R */
#define MSG_WARN 0x10 /* normal queue warning */
#define MSG_WARN_BY 0x20 /* Deliver-By time exceeded, mode N */
#define IS_MSG_ERR(x) (((x) & 0x0f) != 0) /* return an error */
/* immediate return */
#define IS_IMM_RET(x) (((x) & (MSG_T_O_NOW|MSG_NOT_BY)) != 0)
#define IS_MSG_WARN(x) (((x) & 0xf0) != 0) /* return a warning */
/*
** DROPENVELOPE -- deallocate an envelope.
**
** Parameters:
** e -- the envelope to deallocate.
** fulldrop -- if set, do return receipts.
** split -- if true, split by recipient if message is queued up
**
** Returns:
** EX_* status (currently: 0: success, EX_IOERR on panic)
**
** Side Effects:
** housekeeping necessary to dispose of an envelope.
** Unlocks this queue file.
*/
int
dropenvelope(e, fulldrop, split)
register ENVELOPE *e;
bool fulldrop;
bool split;
{
bool panic = false;
bool queueit = false;
int msg_timeout = 0;
bool failure_return = false;
bool delay_return = false;
bool success_return = false;
bool pmnotify = bitset(EF_PM_NOTIFY, e->e_flags);
bool done = false;
register ADDRESS *q;
char *id = e->e_id;
time_t now;
char buf[MAXLINE];
if (tTd(50, 1))
{
sm_dprintf("dropenvelope %p: id=", (void *)e);
xputs(sm_debug_file(), e->e_id);
sm_dprintf(", flags=");
printenvflags(e);
if (tTd(50, 10))
{
sm_dprintf("sendq=");
printaddr(sm_debug_file(), e->e_sendqueue, true);
}
}
if (LogLevel > 84)
sm_syslog(LOG_DEBUG, id,
"dropenvelope, e_flags=0x%lx, OpMode=%c, pid=%d",
e->e_flags, OpMode, (int) CurrentPid);
/* we must have an id to remove disk files */
if (id == NULL)
return EX_OK;
/* if verify-only mode, we can skip most of this */
if (OpMode == MD_VERIFY)
goto simpledrop;
if (tTd(92, 2))
sm_dprintf("dropenvelope: e_id=%s, EF_LOGSENDER=%d, LogLevel=%d\n",
e->e_id, bitset(EF_LOGSENDER, e->e_flags), LogLevel);
if (LogLevel > 4 && bitset(EF_LOGSENDER, e->e_flags))
logsender(e, NULL);
e->e_flags &= ~EF_LOGSENDER;
/* post statistics */
poststats(StatFile);
/*
** Extract state information from dregs of send list.
*/
now = curtime();
if (now >= e->e_ctime + TimeOuts.to_q_return[e->e_timeoutclass])
msg_timeout = MSG_T_O;
if (IS_DLVR_RETURN(e) && e->e_deliver_by > 0 &&
now >= e->e_ctime + e->e_deliver_by &&
!bitset(EF_RESPONSE, e->e_flags))
{
msg_timeout = MSG_NOT_BY;
e->e_flags |= EF_FATALERRS|EF_CLRQUEUE;
}
else if (TimeOuts.to_q_return[e->e_timeoutclass] == NOW &&
!bitset(EF_RESPONSE, e->e_flags))
{
msg_timeout = MSG_T_O_NOW;
e->e_flags |= EF_FATALERRS|EF_CLRQUEUE;
}
#if _FFR_PROXY
if (tTd(87, 2))
{
q = e->e_sendqueue;
sm_dprintf("dropenvelope: mode=%c, e=%p, sibling=%p, nrcpts=%d, sendqueue=%p, next=%p, state=%d\n",
e->e_sendmode, e, e->e_sibling, e->e_nrcpts, q,
(q == NULL) ? (void *)0 : q->q_next,
(q == NULL) ? -1 : q->q_state);
}
#endif /* _FFR_PROXY */
e->e_flags &= ~EF_QUEUERUN;
for (q = e->e_sendqueue; q != NULL; q = q->q_next)
{
if (QS_IS_UNDELIVERED(q->q_state))
queueit = true;
#if _FFR_PROXY
if (queueit && e->e_sendmode == SM_PROXY)
queueit = false;
#endif
/* see if a notification is needed */
if (bitset(QPINGONFAILURE, q->q_flags) &&
((IS_MSG_ERR(msg_timeout) &&
QS_IS_UNDELIVERED(q->q_state)) ||
QS_IS_BADADDR(q->q_state) ||
IS_IMM_RET(msg_timeout)))
{
failure_return = true;
if (!done && q->q_owner == NULL &&
!emptyaddr(&e->e_from))
{
(void) sendtolist(e->e_from.q_paddr, NULLADDR,
&e->e_errorqueue, 0, e);
done = true;
}
}
else if ((bitset(QPINGONSUCCESS, q->q_flags) &&
((QS_IS_SENT(q->q_state) &&
bitnset(M_LOCALMAILER, q->q_mailer->m_flags)) ||
bitset(QRELAYED|QEXPANDED|QDELIVERED, q->q_flags))) ||
bitset(QBYTRACE, q->q_flags) ||
bitset(QBYNRELAY, q->q_flags))
{
success_return = true;
}
}
if (e->e_class < 0)
e->e_flags |= EF_NO_BODY_RETN;
/*
** See if the message timed out.
*/
if (!queueit)
/* EMPTY */
/* nothing to do */ ;
else if (IS_MSG_ERR(msg_timeout))
{
if (failure_return)
{
if (msg_timeout == MSG_NOT_BY)
{
(void) sm_snprintf(buf, sizeof(buf),
"delivery time expired %lds",
e->e_deliver_by);
}
else
{
(void) sm_snprintf(buf, sizeof(buf),
"Cannot send message for %s",
pintvl(TimeOuts.to_q_return[e->e_timeoutclass],
false));
}
/* don't free, allocated from e_rpool */
e->e_message = sm_rpool_strdup_x(e->e_rpool, buf);
message("%s", buf);
e->e_flags |= EF_CLRQUEUE;
}
if (msg_timeout == MSG_NOT_BY)
{
(void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT,
"Delivery time (%lds) expired\n",
e->e_deliver_by);
}
else
(void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT,
"Message could not be delivered for %s\n",
pintvl(TimeOuts.to_q_return[e->e_timeoutclass],
false));
(void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT,
"Message will be deleted from queue\n");
for (q = e->e_sendqueue; q != NULL; q = q->q_next)
{
if (QS_IS_UNDELIVERED(q->q_state))
{
q->q_state = QS_BADADDR;
if (msg_timeout == MSG_NOT_BY)
q->q_status = "5.4.7";
else
q->q_status = "4.4.7";
}
}
}
else
{
if (TimeOuts.to_q_warning[e->e_timeoutclass] > 0 &&
now >= e->e_ctime +
TimeOuts.to_q_warning[e->e_timeoutclass])
msg_timeout = MSG_WARN;
else if (IS_DLVR_NOTIFY(e) &&
e->e_deliver_by > 0 &&
now >= e->e_ctime + e->e_deliver_by)
msg_timeout = MSG_WARN_BY;
if (IS_MSG_WARN(msg_timeout))
{
if (!bitset(EF_WARNING|EF_RESPONSE, e->e_flags) &&
e->e_class >= 0 &&
e->e_from.q_paddr != NULL &&
strcmp(e->e_from.q_paddr, "<>") != 0 &&
sm_strncasecmp(e->e_from.q_paddr, "owner-", 6) != 0 &&
(strlen(e->e_from.q_paddr) <= 8 ||
sm_strcasecmp(&e->e_from.q_paddr[strlen(e->e_from.q_paddr) - 8],
"-request") != 0))
{
for (q = e->e_sendqueue; q != NULL;
q = q->q_next)
{
if (QS_IS_UNDELIVERED(q->q_state)
#if _FFR_NODELAYDSN_ON_HOLD
&& !bitnset(M_HOLD,
q->q_mailer->m_flags)
#endif
)
{
if (msg_timeout ==
MSG_WARN_BY &&
(bitset(QPINGONDELAY,
q->q_flags) ||
!bitset(QHASNOTIFY,
q->q_flags))
)
{
q->q_flags |= QBYNDELAY;
delay_return = true;
}
if (bitset(QPINGONDELAY,
q->q_flags))
{
q->q_flags |= QDELAYED;
delay_return = true;
}
}
}
}
if (delay_return)
{
if (msg_timeout == MSG_WARN_BY)
{
(void) sm_snprintf(buf, sizeof(buf),
"Warning: Delivery time (%lds) exceeded",
e->e_deliver_by);
}
else
(void) sm_snprintf(buf, sizeof(buf),
"Warning: could not send message for past %s",
pintvl(TimeOuts.to_q_warning[e->e_timeoutclass],
false));
/* don't free, allocated from e_rpool */
e->e_message = sm_rpool_strdup_x(e->e_rpool,
buf);
message("%s", buf);
e->e_flags |= EF_WARNING;
}
if (msg_timeout == MSG_WARN_BY)
{
(void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT,
"Warning: Delivery time (%lds) exceeded\n",
e->e_deliver_by);
}
else
(void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT,
"Warning: message still undelivered after %s\n",
pintvl(TimeOuts.to_q_warning[e->e_timeoutclass],
false));
(void) sm_io_fprintf(e->e_xfp, SM_TIME_DEFAULT,
"Will keep trying until message is %s old\n",
pintvl(TimeOuts.to_q_return[e->e_timeoutclass],
false));
}
}
if (tTd(50, 2))
sm_dprintf("failure_return=%d delay_return=%d success_return=%d queueit=%d\n",
failure_return, delay_return, success_return, queueit);
/*
** If we had some fatal error, but no addresses are marked as bad,
** mark all OK/VERIFIED addresses as bad (if QPINGONFAILURE).
*/
if (bitset(EF_FATALERRS, e->e_flags) && !failure_return)
{
for (q = e->e_sendqueue; q != NULL; q = q->q_next)
{
if ((QS_IS_OK(q->q_state) ||
QS_IS_VERIFIED(q->q_state))
&& bitset(QPINGONFAILURE, q->q_flags)
/*
** do not mark an address as bad if
** - the address itself is stored in the queue
** - the DeliveryMode requires queueing
** - the envelope is queued
*/
&& !(bitset(QQUEUED, q->q_flags)
&& WILL_BE_QUEUED(e->e_sendmode)
&& bitset(EF_INQUEUE, e->e_flags)
)
)
{
failure_return = true;
q->q_state = QS_BADADDR;
}
}
}
/*
** Send back return receipts as requested.
*/
if (success_return && !failure_return && !delay_return && fulldrop &&
!bitset(PRIV_NORECEIPTS, PrivacyFlags) &&
strcmp(e->e_from.q_paddr, "<>") != 0)
{
auto ADDRESS *rlist = NULL;
if (tTd(50, 8))
sm_dprintf("dropenvelope(%s): sending return receipt\n",
id);
e->e_flags |= EF_SENDRECEIPT;
(void) sendtolist(e->e_from.q_paddr, NULLADDR, &rlist, 0, e);
(void) returntosender("Return receipt", rlist, RTSF_NO_BODY, e);
}
e->e_flags &= ~EF_SENDRECEIPT;
/*
** Arrange to send error messages if there are fatal errors.
*/
if ((failure_return || delay_return) && e->e_errormode != EM_QUIET)
{
if (tTd(50, 8))
sm_dprintf("dropenvelope(%s): saving mail\n", id);
panic = savemail(e, !bitset(EF_NO_BODY_RETN, e->e_flags));
}
/*
** Arrange to send warning messages to postmaster as requested.
*/
if ((failure_return || pmnotify) &&
PostMasterCopy != NULL &&
!bitset(EF_RESPONSE, e->e_flags) &&
e->e_class >= 0)
{
auto ADDRESS *rlist = NULL;
char pcopy[MAXNAME];
if (failure_return)
{
expand(PostMasterCopy, pcopy, sizeof(pcopy), e);
if (tTd(50, 8))
sm_dprintf("dropenvelope(%s): sending postmaster copy to %s\n",
id, pcopy);
(void) sendtolist(pcopy, NULLADDR, &rlist, 0, e);
}
if (pmnotify)
(void) sendtolist("postmaster", NULLADDR,
&rlist, 0, e);
(void) returntosender(e->e_message, rlist,
RTSF_PM_BOUNCE|RTSF_NO_BODY, e);
}
/*
** Instantiate or deinstantiate the queue.
*/
simpledrop:
if (tTd(50, 8))
sm_dprintf("dropenvelope(%s): at simpledrop, queueit=%d\n",
id, queueit);
if (!queueit || bitset(EF_CLRQUEUE, e->e_flags))
{
if (tTd(50, 1))
{
sm_dprintf("\n===== Dropping queue files for %s... queueit=%d, e_flags=",
e->e_id, queueit);
printenvflags(e);
}
if (!panic)
{
if (e->e_dfp != NULL)
{
(void) sm_io_close(e->e_dfp, SM_TIME_DEFAULT);
e->e_dfp = NULL;
}
(void) xunlink(queuename(e, DATAFL_LETTER));
}
if (panic && QueueMode == QM_LOST)
{
/*
** leave the Qf file behind as
** the delivery attempt failed.
*/
/* EMPTY */
}
else
if (xunlink(queuename(e, ANYQFL_LETTER)) == 0)
{
/* add to available space in filesystem */
updfs(e, -1, panic ? 0 : -1, "dropenvelope");
}
if (e->e_ntries > 0 && LogLevel > 9)
sm_syslog(LOG_INFO, id, "done; delay=%s, ntries=%d",
pintvl(curtime() - e->e_ctime, true),
e->e_ntries);
}
else if (queueit || !bitset(EF_INQUEUE, e->e_flags))
{
if (!split)
queueup(e, false, true);
else
{
ENVELOPE *oldsib;
ENVELOPE *ee;
/*
** Save old sibling and set it to NULL to avoid
** queueing up the same envelopes again.
** This requires that envelopes in that list have
** been take care of before (or at some other place).
*/
oldsib = e->e_sibling;
e->e_sibling = NULL;
if (!split_by_recipient(e) &&
bitset(EF_FATALERRS, e->e_flags))
{
syserr("!dropenvelope(%s): cannot commit data file %s, uid=%ld",
e->e_id, queuename(e, DATAFL_LETTER),
(long) geteuid());
}
for (ee = e->e_sibling; ee != NULL; ee = ee->e_sibling)
queueup(ee, false, true);
queueup(e, false, true);
/* clean up */
for (ee = e->e_sibling; ee != NULL; ee = ee->e_sibling)
{
/* now unlock the job */
if (tTd(50, 8))
sm_dprintf("dropenvelope(%s): unlocking job\n",
ee->e_id);
closexscript(ee);
unlockqueue(ee);
/* this envelope is marked unused */
if (ee->e_dfp != NULL)
{
(void) sm_io_close(ee->e_dfp,
SM_TIME_DEFAULT);
ee->e_dfp = NULL;
}
ee->e_id = NULL;
ee->e_flags &= ~EF_HAS_DF;
}
e->e_sibling = oldsib;
}
}
/* now unlock the job */
if (tTd(50, 8))
sm_dprintf("dropenvelope(%s): unlocking job\n", id);
closexscript(e);
unlockqueue(e);
/* make sure that this envelope is marked unused */
if (e->e_dfp != NULL)
{
(void) sm_io_close(e->e_dfp, SM_TIME_DEFAULT);
e->e_dfp = NULL;
}
e->e_id = NULL;
e->e_flags &= ~EF_HAS_DF;
if (panic)
return EX_IOERR;
return EX_OK;
}
/*
** CLEARENVELOPE -- clear an envelope without unlocking
**
** This is normally used by a child process to get a clean
** envelope without disturbing the parent.
**
** Parameters:
** e -- the envelope to clear.
** fullclear - if set, the current envelope is total
** garbage and should be ignored; otherwise,
** release any resources it may indicate.
** rpool -- either NULL, or a pointer to a resource pool
** from which envelope memory is allocated, and
** to which envelope resources are attached.
**
** Returns:
** none.
**
** Side Effects:
** Closes files associated with the envelope.
** Marks the envelope as unallocated.
*/
void
clearenvelope(e, fullclear, rpool)
register ENVELOPE *e;
bool fullclear;
SM_RPOOL_T *rpool;
{
register HDR *bh;
register HDR **nhp;
extern ENVELOPE BlankEnvelope;
char **p;
if (!fullclear)
{
/* clear out any file information */
if (e->e_xfp != NULL)
(void) sm_io_close(e->e_xfp, SM_TIME_DEFAULT);
if (e->e_dfp != NULL)
(void) sm_io_close(e->e_dfp, SM_TIME_DEFAULT);
e->e_xfp = e->e_dfp = NULL;
}
/*
** Copy BlankEnvelope into *e.
** It is not safe to simply copy pointers to strings;
** the strings themselves must be copied (or set to NULL).
** The problem is that when we assign a new string value to
** a member of BlankEnvelope, we free the old string.
** We did not need to do this copying in sendmail 8.11 :-(
** and it is a potential performance hit. Reference counted
** strings are one way out.
*/
*e = BlankEnvelope;
e->e_message = NULL;
e->e_qfletter = '\0';
e->e_quarmsg = NULL;
macdefine(&e->e_macro, A_PERM, macid("{quarantine}"), "");
/*
** Copy the macro table.
** We might be able to avoid this by zeroing the macro table
** and always searching BlankEnvelope.e_macro after e->e_macro
** in macvalue().
*/
for (p = &e->e_macro.mac_table[0];
p <= &e->e_macro.mac_table[MAXMACROID];
++p)
{
if (*p != NULL)
*p = sm_rpool_strdup_x(rpool, *p);
}
/*
** XXX There are many strings in the envelope structure
** XXX that we are not attempting to copy here.
** XXX Investigate this further.
*/
e->e_rpool = rpool;
e->e_macro.mac_rpool = rpool;
if (Verbose)
set_delivery_mode(SM_DELIVER, e);
bh = BlankEnvelope.e_header;
nhp = &e->e_header;
while (bh != NULL)
{
*nhp = (HDR *) sm_rpool_malloc_x(rpool, sizeof(*bh));
memmove((char *) *nhp, (char *) bh, sizeof(*bh));
bh = bh->h_link;
nhp = &(*nhp)->h_link;
}
#if _FFR_MILTER_ENHSC
e->e_enhsc[0] = '\0';
#endif
}
/*
** INITSYS -- initialize instantiation of system
**
** In Daemon mode, this is done in the child.
**
** Parameters:
** e -- the envelope to use.
**
** Returns:
** none.
**
** Side Effects:
** Initializes the system macros, some global variables,
** etc. In particular, the current time in various
** forms is set.
*/
void
initsys(e)
register ENVELOPE *e;
{
char buf[10];
#ifdef TTYNAME
static char ybuf[60]; /* holds tty id */
register char *p;
extern char *ttyname();
#endif /* TTYNAME */
/*
** Give this envelope a reality.
** I.e., an id, a transcript, and a creation time.
** We don't select the queue until all of the recipients are known.
*/
openxscript(e);
e->e_ctime = curtime();
e->e_qfletter = '\0';
/*
** Set OutChannel to something useful if stdout isn't it.
** This arranges that any extra stuff the mailer produces
** gets sent back to the user on error (because it is
** tucked away in the transcript).
*/
if (OpMode == MD_DAEMON && bitset(EF_QUEUERUN, e->e_flags) &&
e->e_xfp != NULL)
OutChannel = e->e_xfp;
/*
** Set up some basic system macros.
*/
/* process id */
(void) sm_snprintf(buf, sizeof(buf), "%d", (int) CurrentPid);
macdefine(&e->e_macro, A_TEMP, 'p', buf);
/* hop count */
(void) sm_snprintf(buf, sizeof(buf), "%d", e->e_hopcount);
macdefine(&e->e_macro, A_TEMP, 'c', buf);
/* time as integer, unix time, arpa time */
settime(e);
/* Load average */
sm_getla();
#ifdef TTYNAME
/* tty name */
if (macvalue('y', e) == NULL)
{
p = ttyname(2);
if (p != NULL)
{
if (strrchr(p, '/') != NULL)
p = strrchr(p, '/') + 1;
(void) sm_strlcpy(ybuf, sizeof(ybuf), p);
macdefine(&e->e_macro, A_PERM, 'y', ybuf);
}
}
#endif /* TTYNAME */
}
/*
** SETTIME -- set the current time.
**
** Parameters:
** e -- the envelope in which the macros should be set.
**
** Returns:
** none.
**
** Side Effects:
** Sets the various time macros -- $a, $b, $d, $t.
*/
void
settime(e)
register ENVELOPE *e;
{
register char *p;
auto time_t now;
char buf[30];
register struct tm *tm;
now = curtime();
(void) sm_snprintf(buf, sizeof(buf), "%ld", (long) now);
macdefine(&e->e_macro, A_TEMP, macid("{time}"), buf);
tm = gmtime(&now);
(void) sm_snprintf(buf, sizeof(buf), "%04d%02d%02d%02d%02d",
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min);
macdefine(&e->e_macro, A_TEMP, 't', buf);
(void) sm_strlcpy(buf, ctime(&now), sizeof(buf));
p = strchr(buf, '\n');
if (p != NULL)
*p = '\0';
macdefine(&e->e_macro, A_TEMP, 'd', buf);
macdefine(&e->e_macro, A_TEMP, 'b', arpadate(buf));
if (macvalue('a', e) == NULL)
macdefine(&e->e_macro, A_PERM, 'a', macvalue('b', e));
}
/*
** OPENXSCRIPT -- Open transcript file
**
** Creates a transcript file for possible eventual mailing or
** sending back.
**
** Parameters:
** e -- the envelope to create the transcript in/for.
**
** Returns:
** none
**
** Side Effects:
** Creates the transcript file.
*/
#ifndef O_APPEND
# define O_APPEND 0
#endif
void
openxscript(e)
register ENVELOPE *e;
{
register char *p;
if (e->e_xfp != NULL)
return;
#if 0
if (e->e_lockfp == NULL && bitset(EF_INQUEUE, e->e_flags))
syserr("openxscript: job not locked");
#endif
p = queuename(e, XSCRPT_LETTER);
e->e_xfp = bfopen(p, FileMode, XscriptFileBufferSize,
SFF_NOTEXCL|SFF_OPENASROOT);
if (e->e_xfp == NULL)
{
syserr("Can't create transcript file %s", p);
e->e_xfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT,
SM_PATH_DEVNULL, SM_IO_RDWR, NULL);
if (e->e_xfp == NULL)
syserr("!Can't open %s", SM_PATH_DEVNULL);
}
(void) sm_io_setvbuf(e->e_xfp, SM_TIME_DEFAULT, NULL, SM_IO_LBF, 0);
if (tTd(46, 9))
{
sm_dprintf("openxscript(%s):\n ", p);
dumpfd(sm_io_getinfo(e->e_xfp, SM_IO_WHAT_FD, NULL), true,
false);
}
}
/*
** CLOSEXSCRIPT -- close the transcript file.
**
** Parameters:
** e -- the envelope containing the transcript to close.
**
** Returns:
** none.
**
** Side Effects:
** none.
*/
void
closexscript(e)
register ENVELOPE *e;
{
if (e->e_xfp == NULL)
return;
#if 0
if (e->e_lockfp == NULL)
syserr("closexscript: job not locked");
#endif
(void) sm_io_close(e->e_xfp, SM_TIME_DEFAULT);
e->e_xfp = NULL;
}
/*
** SETSENDER -- set the person who this message is from
**
** Under certain circumstances allow the user to say who
** s/he is (using -f or -r). These are:
** 1. The user's uid is zero (root).
** 2. The user's login name is in an approved list (typically
** from a network server).
** 3. The address the user is trying to claim has a
** "!" character in it (since #2 doesn't do it for
** us if we are dialing out for UUCP).
** A better check to replace #3 would be if the
** effective uid is "UUCP" -- this would require me
** to rewrite getpwent to "grab" uucp as it went by,
** make getname more nasty, do another passwd file
** scan, or compile the UID of "UUCP" into the code,
** all of which are reprehensible.
**
** Assuming all of these fail, we figure out something
** ourselves.
**
** Parameters:
** from -- the person we would like to believe this message
** is from, as specified on the command line.
** e -- the envelope in which we would like the sender set.
** delimptr -- if non-NULL, set to the location of the
** trailing delimiter.
** delimchar -- the character that will delimit the sender
** address.
** internal -- set if this address is coming from an internal
** source such as an owner alias.
**
** Returns:
** none.
**
** Side Effects:
** sets sendmail's notion of who the from person is.
*/
void
setsender(from, e, delimptr, delimchar, internal)
char *from;
register ENVELOPE *e;
char **delimptr;
int delimchar;
bool internal;
{
register char **pvp;
char *realname = NULL;
char *bp;
char buf[MAXNAME + 2];
char pvpbuf[PSBUFSIZE];
extern char *FullName;
if (tTd(45, 1))
sm_dprintf("setsender(%s)\n", from == NULL ? "" : from);
/* may be set from earlier calls */
macdefine(&e->e_macro, A_PERM, 'x', "");
/*
** Figure out the real user executing us.
** Username can return errno != 0 on non-errors.
*/
if (bitset(EF_QUEUERUN, e->e_flags) || OpMode == MD_SMTP ||
OpMode == MD_ARPAFTP || OpMode == MD_DAEMON)
realname = from;
if (realname == NULL || realname[0] == '\0')
realname = username();
if (ConfigLevel < 2)
SuprErrs = true;
macdefine(&e->e_macro, A_PERM, macid("{addr_type}"), "e s");
/* preset state for then clause in case from == NULL */
e->e_from.q_state = QS_BADADDR;
e->e_from.q_flags = 0;
if (from == NULL ||
parseaddr(from, &e->e_from, RF_COPYALL|RF_SENDERADDR,
delimchar, delimptr, e, false) == NULL ||
QS_IS_BADADDR(e->e_from.q_state) ||
e->e_from.q_mailer == ProgMailer ||
e->e_from.q_mailer == FileMailer ||
e->e_from.q_mailer == InclMailer)
{
/* log garbage addresses for traceback */
if (from != NULL && LogLevel > 2)
{
char *p;
char ebuf[MAXNAME * 2 + 2];
p = macvalue('_', e);
if (p == NULL)
{
char *host = RealHostName;
if (host == NULL)
host = MyHostName;
(void) sm_snprintf(ebuf, sizeof(ebuf),
"%.*s@%.*s", MAXNAME,
realname, MAXNAME, host);
p = ebuf;
}
sm_syslog(LOG_NOTICE, e->e_id,
"setsender: %s: invalid or unparsable, received from %s",
shortenstring(from, 83), p);
}
if (from != NULL)
{
if (!QS_IS_BADADDR(e->e_from.q_state))
{
/* it was a bogus mailer in the from addr */
e->e_status = "5.1.7";
usrerrenh(e->e_status,
"553 Invalid sender address");
}
SuprErrs = true;
}
if (from == realname ||
parseaddr(from = realname,
&e->e_from, RF_COPYALL|RF_SENDERADDR, ' ',
NULL, e, false) == NULL)
{
char nbuf[100];
SuprErrs = true;
expand("\201n", nbuf, sizeof(nbuf), e);
from = sm_rpool_strdup_x(e->e_rpool, nbuf);
if (parseaddr(from, &e->e_from, RF_COPYALL, ' ',
NULL, e, false) == NULL &&
parseaddr(from = "postmaster", &e->e_from,
RF_COPYALL, ' ', NULL, e, false) == NULL)
syserr("553 5.3.0 setsender: can't even parse postmaster!");
}
}
else
FromFlag = true;
e->e_from.q_state = QS_SENDER;
if (tTd(45, 5))
{
sm_dprintf("setsender: QS_SENDER ");
printaddr(sm_debug_file(), &e->e_from, false);
}
SuprErrs = false;
#if USERDB
if (bitnset(M_CHECKUDB, e->e_from.q_mailer->m_flags))
{
register char *p;
p = udbsender(e->e_from.q_user, e->e_rpool);
if (p != NULL)
from = p;
}
#endif /* USERDB */
if (bitnset(M_HASPWENT, e->e_from.q_mailer->m_flags))
{
SM_MBDB_T user;
if (!internal)
{
/* if the user already given fullname don't redefine */
if (FullName == NULL)
FullName = macvalue('x', e);
if (FullName != NULL)
{
if (FullName[0] == '\0')
FullName = NULL;
else
FullName = newstr(FullName);
}
}
if (e->e_from.q_user[0] != '\0' &&
sm_mbdb_lookup(e->e_from.q_user, &user) == EX_OK)
{
/*
** Process passwd file entry.
*/
/* extract home directory */
if (*user.mbdb_homedir == '\0')
e->e_from.q_home = NULL;
else if (strcmp(user.mbdb_homedir, "/") == 0)
e->e_from.q_home = "";
else
e->e_from.q_home = sm_rpool_strdup_x(e->e_rpool,
user.mbdb_homedir);
macdefine(&e->e_macro, A_PERM, 'z', e->e_from.q_home);
/* extract user and group id */
if (user.mbdb_uid != SM_NO_UID)
{
e->e_from.q_uid = user.mbdb_uid;
e->e_from.q_gid = user.mbdb_gid;
e->e_from.q_flags |= QGOODUID;
}
/* extract full name from passwd file */
if (FullName == NULL && !internal &&
user.mbdb_fullname[0] != '\0' &&
strcmp(user.mbdb_name, e->e_from.q_user) == 0)
{
FullName = newstr(user.mbdb_fullname);
}
}
else
{
e->e_from.q_home = NULL;
}
if (FullName != NULL && !internal)
macdefine(&e->e_macro, A_TEMP, 'x', FullName);
}
else if (!internal && OpMode != MD_DAEMON && OpMode != MD_SMTP)
{
if (e->e_from.q_home == NULL)
{
e->e_from.q_home = getenv("HOME");
if (e->e_from.q_home != NULL)
{
if (*e->e_from.q_home == '\0')
e->e_from.q_home = NULL;
else if (strcmp(e->e_from.q_home, "/") == 0)
e->e_from.q_home++;
}
}
e->e_from.q_uid = RealUid;
e->e_from.q_gid = RealGid;
e->e_from.q_flags |= QGOODUID;
}
/*
** Rewrite the from person to dispose of possible implicit
** links in the net.
*/
pvp = prescan(from, delimchar, pvpbuf, sizeof(pvpbuf), NULL,
IntTokenTab, false);
if (pvp == NULL)
{
/* don't need to give error -- prescan did that already */
if (LogLevel > 2)
sm_syslog(LOG_NOTICE, e->e_id,
"cannot prescan from (%s)",
shortenstring(from, MAXSHORTSTR));
finis(true, true, ExitStat);
}
(void) REWRITE(pvp, 3, e);
(void) REWRITE(pvp, 1, e);
(void) REWRITE(pvp, 4, e);
macdefine(&e->e_macro, A_PERM, macid("{addr_type}"), NULL);
bp = buf + 1;
cataddr(pvp, NULL, bp, sizeof(buf) - 2, '\0', false);
if (*bp == '@' && !bitnset(M_NOBRACKET, e->e_from.q_mailer->m_flags))
{
/* heuristic: route-addr: add angle brackets */
(void) sm_strlcat(bp, ">", sizeof(buf) - 1);
*--bp = '<';
}
e->e_sender = sm_rpool_strdup_x(e->e_rpool, bp);
macdefine(&e->e_macro, A_PERM, 'f', e->e_sender);
/* save the domain spec if this mailer wants it */
if (e->e_from.q_mailer != NULL &&
bitnset(M_CANONICAL, e->e_from.q_mailer->m_flags))
{
char **lastat;
/* get rid of any pesky angle brackets */
macdefine(&e->e_macro, A_PERM, macid("{addr_type}"), "e s");
(void) REWRITE(pvp, 3, e);
(void) REWRITE(pvp, 1, e);
(void) REWRITE(pvp, 4, e);
macdefine(&e->e_macro, A_PERM, macid("{addr_type}"), NULL);
/* strip off to the last "@" sign */
for (lastat = NULL; *pvp != NULL; pvp++)
{
if (strcmp(*pvp, "@") == 0)
lastat = pvp;
}
if (lastat != NULL)
{
e->e_fromdomain = copyplist(lastat, true, e->e_rpool);
if (tTd(45, 3))
{
sm_dprintf("Saving from domain: ");
printav(sm_debug_file(), e->e_fromdomain);
}
}
}
}
/*
** PRINTENVFLAGS -- print envelope flags for debugging
**
** Parameters:
** e -- the envelope with the flags to be printed.
**
** Returns:
** none.
*/
struct eflags
{
char *ef_name;
unsigned long ef_bit;
};
static struct eflags EnvelopeFlags[] =
{
{ "OLDSTYLE", EF_OLDSTYLE },
{ "INQUEUE", EF_INQUEUE },
{ "NO_BODY_RETN", EF_NO_BODY_RETN },
{ "CLRQUEUE", EF_CLRQUEUE },
{ "SENDRECEIPT", EF_SENDRECEIPT },
{ "FATALERRS", EF_FATALERRS },
{ "DELETE_BCC", EF_DELETE_BCC },
{ "RESPONSE", EF_RESPONSE },
{ "RESENT", EF_RESENT },
{ "VRFYONLY", EF_VRFYONLY },
{ "WARNING", EF_WARNING },
{ "QUEUERUN", EF_QUEUERUN },
{ "GLOBALERRS", EF_GLOBALERRS },
{ "PM_NOTIFY", EF_PM_NOTIFY },
{ "METOO", EF_METOO },
{ "LOGSENDER", EF_LOGSENDER },
{ "NORECEIPT", EF_NORECEIPT },
{ "HAS8BIT", EF_HAS8BIT },
{ "RET_PARAM", EF_RET_PARAM },
{ "HAS_DF", EF_HAS_DF },
{ "IS_MIME", EF_IS_MIME },
{ "DONT_MIME", EF_DONT_MIME },
{ "DISCARD", EF_DISCARD },
{ "TOOBIG", EF_TOOBIG },
{ "SPLIT", EF_SPLIT },
{ "UNSAFE", EF_UNSAFE },
{ "TOODEEP", EF_TOODEEP },
{ "SECURE", EF_SECURE },
{ NULL, 0 }
};
void
printenvflags(e)
register ENVELOPE *e;
{
register struct eflags *ef;
bool first = true;
sm_dprintf("%lx", e->e_flags);
for (ef = EnvelopeFlags; ef->ef_name != NULL; ef++)
{
if (!bitset(ef->ef_bit, e->e_flags))
continue;
if (first)
sm_dprintf("<%s", ef->ef_name);
else
sm_dprintf(",%s", ef->ef_name);
first = false;
}
if (!first)
sm_dprintf(">\n");
}