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opnsense-src/contrib/sendmail/src/main.c
Gregory Neil Shapiro da7d7b9c86 Merge sendmail 8.15.2 to HEAD 
MFC after:	3 days
2015-07-07 02:59:02 +00:00

4644 lines
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/*
* Copyright (c) 1998-2006, 2008, 2009, 2011 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.
*
*/
#define _DEFINE
#include <sendmail.h>
#include <sm/sendmail.h>
#include <sm/xtrap.h>
#include <sm/signal.h>
#ifndef lint
SM_UNUSED(static char copyright[]) =
"@(#) Copyright (c) 1998-2013 Proofpoint, Inc. and its suppliers.\n\
All rights reserved.\n\
Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.\n\
Copyright (c) 1988, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* ! lint */
SM_RCSID("@(#)$Id: main.c,v 8.988 2013-11-23 02:52:37 gshapiro Exp $")
#if NETINET || NETINET6
# include <arpa/inet.h>
#endif /* NETINET || NETINET6 */
/* for getcfname() */
#include <sendmail/pathnames.h>
static SM_DEBUG_T
DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart",
"@(#)$Debug: no_persistent_restart - don't restart, log only $");
static void dump_class __P((STAB *, int));
static void obsolete __P((char **));
static void testmodeline __P((char *, ENVELOPE *));
static char *getextenv __P((const char *));
static void sm_printoptions __P((char **));
static SIGFUNC_DECL intindebug __P((int));
static SIGFUNC_DECL sighup __P((int));
static SIGFUNC_DECL sigpipe __P((int));
static SIGFUNC_DECL sigterm __P((int));
#ifdef SIGUSR1
static SIGFUNC_DECL sigusr1 __P((int));
#endif /* SIGUSR1 */
/*
** SENDMAIL -- Post mail to a set of destinations.
**
** This is the basic mail router. All user mail programs should
** call this routine to actually deliver mail. Sendmail in
** turn calls a bunch of mail servers that do the real work of
** delivering the mail.
**
** Sendmail is driven by settings read in from /etc/mail/sendmail.cf
** (read by readcf.c).
**
** Usage:
** /usr/lib/sendmail [flags] addr ...
**
** See the associated documentation for details.
**
** Authors:
** Eric Allman, UCB/INGRES (until 10/81).
** Britton-Lee, Inc., purveyors of fine
** database computers (11/81 - 10/88).
** International Computer Science Institute
** (11/88 - 9/89).
** UCB/Mammoth Project (10/89 - 7/95).
** InReference, Inc. (8/95 - 1/97).
** Sendmail, Inc. (1/98 - 9/13).
** The support of my employers is gratefully acknowledged.
** Few of them (Britton-Lee in particular) have had
** anything to gain from my involvement in this project.
**
** Gregory Neil Shapiro,
** Worcester Polytechnic Institute (until 3/98).
** Sendmail, Inc. (3/98 - 10/13).
** Proofpoint, Inc. (10/13 - present).
**
** Claus Assmann,
** Sendmail, Inc. (12/98 - 10/13).
** Proofpoint, Inc. (10/13 - present).
*/
char *FullName; /* sender's full name */
ENVELOPE BlankEnvelope; /* a "blank" envelope */
static ENVELOPE MainEnvelope; /* the envelope around the basic letter */
ADDRESS NullAddress = /* a null address */
{ "", "", NULL, "" };
char *CommandLineArgs; /* command line args for pid file */
bool Warn_Q_option = false; /* warn about Q option use */
static int MissingFds = 0; /* bit map of fds missing on startup */
char *Mbdb = "pw"; /* mailbox database defaults to /etc/passwd */
#ifdef NGROUPS_MAX
GIDSET_T InitialGidSet[NGROUPS_MAX];
#endif /* NGROUPS_MAX */
#define MAXCONFIGLEVEL 10 /* highest config version level known */
#if SASL
static sasl_callback_t srvcallbacks[] =
{
{ SASL_CB_VERIFYFILE, (sasl_callback_ft)&safesaslfile, NULL },
{ SASL_CB_PROXY_POLICY, (sasl_callback_ft)&proxy_policy, NULL },
{ SASL_CB_LIST_END, NULL, NULL }
};
#endif /* SASL */
unsigned int SubmitMode;
int SyslogPrefixLen; /* estimated length of syslog prefix */
#define PIDLEN 6 /* pid length for computing SyslogPrefixLen */
#ifndef SL_FUDGE
# define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */
#endif /* ! SL_FUDGE */
#define SLDLL 8 /* est. length of default syslog label */
/* Some options are dangerous to allow users to use in non-submit mode */
#define CHECK_AGAINST_OPMODE(cmd) \
{ \
if (extraprivs && \
OpMode != MD_DELIVER && OpMode != MD_SMTP && \
OpMode != MD_ARPAFTP && OpMode != MD_CHECKCONFIG && \
OpMode != MD_VERIFY && OpMode != MD_TEST) \
{ \
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \
"WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \
(cmd)); \
break; \
} \
if (extraprivs && queuerun) \
{ \
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \
"WARNING: Ignoring submission mode -%c option with -q\n", \
(cmd)); \
break; \
} \
}
int
main(argc, argv, envp)
int argc;
char **argv;
char **envp;
{
register char *p;
char **av;
extern char Version[];
char *ep, *from;
STAB *st;
register int i;
int j;
int dp;
int fill_errno;
int qgrp = NOQGRP; /* queue group to process */
bool safecf = true;
BITMAP256 *p_flags = NULL; /* daemon flags */
bool warn_C_flag = false;
bool auth = true; /* whether to set e_auth_param */
char warn_f_flag = '\0';
bool run_in_foreground = false; /* -bD mode */
bool queuerun = false, debug = false;
struct passwd *pw;
struct hostent *hp;
char *nullserver = NULL;
char *authinfo = NULL;
char *sysloglabel = NULL; /* label for syslog */
char *conffile = NULL; /* name of .cf file */
char *queuegroup = NULL; /* queue group to process */
char *quarantining = NULL; /* quarantine queue items? */
bool extraprivs;
bool forged, negate;
bool queuepersistent = false; /* queue runner process runs forever */
bool foregroundqueue = false; /* queue run in foreground */
bool save_val; /* to save some bool var. */
int cftype; /* which cf file to use? */
SM_FILE_T *smdebug;
static time_t starttime = 0; /* when was process started */
struct stat traf_st; /* for TrafficLog FIFO check */
char buf[MAXLINE];
char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */
static char rnamebuf[MAXNAME]; /* holds RealUserName */
char *emptyenviron[1];
#if STARTTLS
bool tls_ok;
#endif /* STARTTLS */
QUEUE_CHAR *new;
ENVELOPE *e;
extern int DtableSize;
extern int optind;
extern int opterr;
extern char *optarg;
extern char **environ;
#if SASL
extern void sm_sasl_init __P((void));
#endif /* SASL */
#if USE_ENVIRON
envp = environ;
#endif /* USE_ENVIRON */
/* turn off profiling */
SM_PROF(0);
/* install default exception handler */
sm_exc_newthread(fatal_error);
/* set the default in/out channel so errors reported to screen */
InChannel = smioin;
OutChannel = smioout;
/*
** Check to see if we reentered.
** This would normally happen if e_putheader or e_putbody
** were NULL when invoked.
*/
if (starttime != 0)
{
syserr("main: reentered!");
abort();
}
starttime = curtime();
/* avoid null pointer dereferences */
TermEscape.te_rv_on = TermEscape.te_under_on = TermEscape.te_normal = "";
RealUid = getuid();
RealGid = getgid();
/* Check if sendmail is running with extra privs */
extraprivs = (RealUid != 0 &&
(geteuid() != getuid() || getegid() != getgid()));
CurrentPid = getpid();
/* get whatever .cf file is right for the opmode */
cftype = SM_GET_RIGHT_CF;
/* in 4.4BSD, the table can be huge; impose a reasonable limit */
DtableSize = getdtsize();
if (DtableSize > 256)
DtableSize = 256;
/*
** Be sure we have enough file descriptors.
** But also be sure that 0, 1, & 2 are open.
*/
/* reset errno and fill_errno; the latter is used way down below */
errno = fill_errno = 0;
fill_fd(STDIN_FILENO, NULL);
if (errno != 0)
fill_errno = errno;
fill_fd(STDOUT_FILENO, NULL);
if (errno != 0)
fill_errno = errno;
fill_fd(STDERR_FILENO, NULL);
if (errno != 0)
fill_errno = errno;
sm_closefrom(STDERR_FILENO + 1, DtableSize);
errno = 0;
smdebug = NULL;
#if LOG
# ifndef SM_LOG_STR
# define SM_LOG_STR "sendmail"
# endif /* ! SM_LOG_STR */
# ifdef LOG_MAIL
openlog(SM_LOG_STR, LOG_PID, LOG_MAIL);
# else /* LOG_MAIL */
openlog(SM_LOG_STR, LOG_PID);
# endif /* LOG_MAIL */
#endif /* LOG */
/*
** Seed the random number generator.
** Used for queue file names, picking a queue directory, and
** MX randomization.
*/
seed_random();
/* do machine-dependent initializations */
init_md(argc, argv);
SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL;
/* reset status from syserr() calls for missing file descriptors */
Errors = 0;
ExitStat = EX_OK;
SubmitMode = SUBMIT_UNKNOWN;
#if _FFR_LOCAL_DAEMON
LocalDaemon = false;
# if NETINET6
V6LoopbackAddrFound = false;
# endif /* NETINET6 */
#endif /* _FFR_LOCAL_DAEMON */
#if XDEBUG
checkfd012("after openlog");
#endif /* XDEBUG */
tTsetup(tTdvect, sizeof(tTdvect), "0-99.1,*_trace_*.1");
#ifdef NGROUPS_MAX
/* save initial group set for future checks */
i = getgroups(NGROUPS_MAX, InitialGidSet);
if (i <= 0)
{
InitialGidSet[0] = (GID_T) -1;
i = 0;
}
while (i < NGROUPS_MAX)
InitialGidSet[i++] = InitialGidSet[0];
#endif /* NGROUPS_MAX */
/* drop group id privileges (RunAsUser not yet set) */
dp = drop_privileges(false);
setstat(dp);
#ifdef SIGUSR1
/* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */
if (!extraprivs)
{
/* arrange to dump state on user-1 signal */
(void) sm_signal(SIGUSR1, sigusr1);
}
else
{
/* ignore user-1 signal */
(void) sm_signal(SIGUSR1, SIG_IGN);
}
#endif /* SIGUSR1 */
/* initialize for setproctitle */
initsetproctitle(argc, argv, envp);
/* Handle any non-getoptable constructions. */
obsolete(argv);
/*
** Do a quick prescan of the argument list.
*/
/* find initial opMode */
OpMode = MD_DELIVER;
av = argv;
p = strrchr(*av, '/');
if (p++ == NULL)
p = *av;
if (strcmp(p, "newaliases") == 0)
OpMode = MD_INITALIAS;
else if (strcmp(p, "mailq") == 0)
OpMode = MD_PRINT;
else if (strcmp(p, "smtpd") == 0)
OpMode = MD_DAEMON;
else if (strcmp(p, "hoststat") == 0)
OpMode = MD_HOSTSTAT;
else if (strcmp(p, "purgestat") == 0)
OpMode = MD_PURGESTAT;
#if defined(__osf__) || defined(_AIX3)
# define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:x"
#endif /* defined(__osf__) || defined(_AIX3) */
#if defined(sony_news)
# define OPTIONS "A:B:b:C:cD:d:E:e:F:f:Gh:IiJ:L:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:"
#endif /* defined(sony_news) */
#ifndef OPTIONS
# define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:"
#endif /* ! OPTIONS */
/* Set to 0 to allow -b; need to check optarg before using it! */
opterr = 0;
while ((j = getopt(argc, argv, OPTIONS)) != -1)
{
switch (j)
{
case 'b': /* operations mode */
j = (optarg == NULL) ? ' ' : *optarg;
switch (j)
{
case MD_DAEMON:
case MD_FGDAEMON:
case MD_SMTP:
case MD_INITALIAS:
case MD_DELIVER:
case MD_VERIFY:
case MD_TEST:
case MD_PRINT:
case MD_PRINTNQE:
case MD_HOSTSTAT:
case MD_PURGESTAT:
case MD_ARPAFTP:
case MD_CHECKCONFIG:
OpMode = j;
break;
#if _FFR_LOCAL_DAEMON
case MD_LOCAL:
OpMode = MD_DAEMON;
LocalDaemon = true;
break;
#endif /* _FFR_LOCAL_DAEMON */
case MD_FREEZE:
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Frozen configurations unsupported\n");
return EX_USAGE;
default:
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Invalid operation mode %c\n",
j);
return EX_USAGE;
}
break;
case 'D':
if (debug)
{
errno = 0;
syserr("-D file must be before -d");
ExitStat = EX_USAGE;
break;
}
dp = drop_privileges(true);
setstat(dp);
smdebug = sm_io_open(SmFtStdio, SM_TIME_DEFAULT,
optarg, SM_IO_APPEND, NULL);
if (smdebug == NULL)
{
syserr("cannot open %s", optarg);
ExitStat = EX_CANTCREAT;
break;
}
sm_debug_setfile(smdebug);
break;
case 'd':
debug = true;
tTflag(optarg);
(void) sm_io_setvbuf(sm_debug_file(), SM_TIME_DEFAULT,
(char *) NULL, SM_IO_NBF,
SM_IO_BUFSIZ);
break;
case 'G': /* relay (gateway) submission */
SubmitMode = SUBMIT_MTA;
break;
case 'L':
if (optarg == NULL)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"option requires an argument -- '%c'",
(char) j);
return EX_USAGE;
}
j = SM_MIN(strlen(optarg), 32) + 1;
sysloglabel = xalloc(j);
(void) sm_strlcpy(sysloglabel, optarg, j);
SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) +
SL_FUDGE + j;
break;
case 'Q':
case 'q':
/* just check if it is there */
queuerun = true;
break;
}
}
opterr = 1;
/* Don't leak queue information via debug flags */
if (extraprivs && queuerun && debug)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"WARNING: Can not use -d with -q. Disabling debugging.\n");
sm_debug_close();
sm_debug_setfile(NULL);
(void) memset(tTdvect, '\0', sizeof(tTdvect));
}
#if LOG
if (sysloglabel != NULL)
{
/* Sanitize the string */
for (p = sysloglabel; *p != '\0'; p++)
{
if (!isascii(*p) || !isprint(*p) || *p == '%')
*p = '*';
}
closelog();
# ifdef LOG_MAIL
openlog(sysloglabel, LOG_PID, LOG_MAIL);
# else /* LOG_MAIL */
openlog(sysloglabel, LOG_PID);
# endif /* LOG_MAIL */
}
#endif /* LOG */
/* set up the blank envelope */
BlankEnvelope.e_puthdr = putheader;
BlankEnvelope.e_putbody = putbody;
BlankEnvelope.e_xfp = NULL;
STRUCTCOPY(NullAddress, BlankEnvelope.e_from);
CurEnv = &BlankEnvelope;
STRUCTCOPY(NullAddress, MainEnvelope.e_from);
/*
** Set default values for variables.
** These cannot be in initialized data space.
*/
setdefaults(&BlankEnvelope);
initmacros(&BlankEnvelope);
/* reset macro */
set_op_mode(OpMode);
if (OpMode == MD_DAEMON)
DaemonPid = CurrentPid; /* needed for finis() to work */
pw = sm_getpwuid(RealUid);
if (pw != NULL)
(void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof(rnamebuf));
else
(void) sm_snprintf(rnamebuf, sizeof(rnamebuf), "Unknown UID %d",
(int) RealUid);
RealUserName = rnamebuf;
if (tTd(0, 101))
{
sm_dprintf("Version %s\n", Version);
finis(false, true, EX_OK);
/* NOTREACHED */
}
/*
** if running non-set-user-ID binary as non-root, pretend
** we are the RunAsUid
*/
if (RealUid != 0 && geteuid() == RealUid)
{
if (tTd(47, 1))
sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n",
(int) RealUid);
RunAsUid = RealUid;
}
else if (geteuid() != 0)
RunAsUid = geteuid();
EffGid = getegid();
if (RealUid != 0 && EffGid == RealGid)
RunAsGid = RealGid;
if (tTd(47, 5))
{
sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n",
(int) geteuid(), (int) getuid(),
(int) getegid(), (int) getgid());
sm_dprintf("main: RunAsUser = %d:%d\n",
(int) RunAsUid, (int) RunAsGid);
}
/* save command line arguments */
j = 0;
for (av = argv; *av != NULL; )
j += strlen(*av++) + 1;
SaveArgv = (char **) xalloc(sizeof(char *) * (argc + 1));
CommandLineArgs = xalloc(j);
p = CommandLineArgs;
for (av = argv, i = 0; *av != NULL; )
{
int h;
SaveArgv[i++] = newstr(*av);
if (av != argv)
*p++ = ' ';
(void) sm_strlcpy(p, *av++, j);
h = strlen(p);
p += h;
j -= h + 1;
}
SaveArgv[i] = NULL;
if (tTd(0, 1))
{
extern char *CompileOptions[];
sm_dprintf("Version %s\n Compiled with:", Version);
sm_printoptions(CompileOptions);
}
if (tTd(0, 10))
{
extern char *OsCompileOptions[];
sm_dprintf(" OS Defines:");
sm_printoptions(OsCompileOptions);
#ifdef _PATH_UNIX
sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX);
#endif /* _PATH_UNIX */
sm_dprintf(" Conf file:\t%s (default for MSP)\n",
getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF,
conffile));
sm_dprintf(" Conf file:\t%s (default for MTA)\n",
getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF,
conffile));
sm_dprintf(" Pid file:\t%s (default)\n", PidFile);
}
if (tTd(0, 12))
{
extern char *SmCompileOptions[];
sm_dprintf(" libsm Defines:");
sm_printoptions(SmCompileOptions);
}
if (tTd(0, 13))
{
extern char *FFRCompileOptions[];
sm_dprintf(" FFR Defines:");
sm_printoptions(FFRCompileOptions);
}
#if STARTTLS
if (tTd(0, 14))
{
/* exit(EX_CONFIG) if different? */
sm_dprintf(" OpenSSL: compiled 0x%08x\n",
(uint) OPENSSL_VERSION_NUMBER);
sm_dprintf(" OpenSSL: linked 0x%08x\n",
(uint) SSLeay());
}
#endif /* STARTTLS */
/* clear sendmail's environment */
ExternalEnviron = environ;
emptyenviron[0] = NULL;
environ = emptyenviron;
/*
** restore any original TZ setting until TimeZoneSpec has been
** determined - or early log messages may get bogus time stamps
*/
if ((p = getextenv("TZ")) != NULL)
{
char *tz;
int tzlen;
/* XXX check for reasonable length? */
tzlen = strlen(p) + 4;
tz = xalloc(tzlen);
(void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p);
/* XXX check return code? */
(void) putenv(tz);
}
/* prime the child environment */
sm_setuserenv("AGENT", "sendmail");
(void) sm_signal(SIGPIPE, SIG_IGN);
OldUmask = umask(022);
FullName = getextenv("NAME");
if (FullName != NULL)
FullName = newstr(FullName);
/*
** Initialize name server if it is going to be used.
*/
#if NAMED_BIND
if (!bitset(RES_INIT, _res.options))
(void) res_init();
if (tTd(8, 8))
_res.options |= RES_DEBUG;
else
_res.options &= ~RES_DEBUG;
# ifdef RES_NOALIASES
_res.options |= RES_NOALIASES;
# endif /* RES_NOALIASES */
TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry;
TimeOuts.res_retry[RES_TO_FIRST] = _res.retry;
TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry;
TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans;
TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans;
TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans;
#endif /* NAMED_BIND */
errno = 0;
from = NULL;
/* initialize some macros, etc. */
init_vendor_macros(&BlankEnvelope);
/* version */
macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version);
/* hostname */
hp = myhostname(jbuf, sizeof(jbuf));
if (jbuf[0] != '\0')
{
struct utsname utsname;
if (tTd(0, 4))
sm_dprintf("Canonical name: %s\n", jbuf);
macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf);
macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf);
setclass('w', jbuf);
p = strchr(jbuf, '.');
if (p != NULL && p[1] != '\0')
macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]);
if (uname(&utsname) >= 0)
p = utsname.nodename;
else
{
if (tTd(0, 22))
sm_dprintf("uname failed (%s)\n",
sm_errstring(errno));
makelower(jbuf);
p = jbuf;
}
if (tTd(0, 4))
sm_dprintf(" UUCP nodename: %s\n", p);
macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p);
setclass('k', p);
setclass('w', p);
}
if (hp != NULL)
{
for (av = hp->h_aliases; av != NULL && *av != NULL; av++)
{
if (tTd(0, 4))
sm_dprintf("\ta.k.a.: %s\n", *av);
setclass('w', *av);
}
#if NETINET || NETINET6
for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++)
{
# if NETINET6
char *addr;
char buf6[INET6_ADDRSTRLEN];
struct in6_addr ia6;
# endif /* NETINET6 */
# if NETINET
struct in_addr ia;
# endif /* NETINET */
char ipbuf[103];
ipbuf[0] = '\0';
switch (hp->h_addrtype)
{
# if NETINET
case AF_INET:
if (hp->h_length != INADDRSZ)
break;
memmove(&ia, hp->h_addr_list[i], INADDRSZ);
(void) sm_snprintf(ipbuf, sizeof(ipbuf),
"[%.100s]", inet_ntoa(ia));
break;
# endif /* NETINET */
# if NETINET6
case AF_INET6:
if (hp->h_length != IN6ADDRSZ)
break;
memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ);
addr = anynet_ntop(&ia6, buf6, sizeof(buf6));
if (addr != NULL)
(void) sm_snprintf(ipbuf, sizeof(ipbuf),
"[%.100s]", addr);
break;
# endif /* NETINET6 */
}
if (ipbuf[0] == '\0')
break;
if (tTd(0, 4))
sm_dprintf("\ta.k.a.: %s\n", ipbuf);
setclass('w', ipbuf);
}
#endif /* NETINET || NETINET6 */
#if NETINET6
freehostent(hp);
hp = NULL;
#endif /* NETINET6 */
}
/* current time */
macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL));
/* current load average */
sm_getla();
QueueLimitRecipient = (QUEUE_CHAR *) NULL;
QueueLimitSender = (QUEUE_CHAR *) NULL;
QueueLimitId = (QUEUE_CHAR *) NULL;
QueueLimitQuarantine = (QUEUE_CHAR *) NULL;
/*
** Crack argv.
*/
optind = 1;
while ((j = getopt(argc, argv, OPTIONS)) != -1)
{
switch (j)
{
case 'b': /* operations mode */
/* already done */
break;
case 'A': /* use Alternate sendmail/submit.cf */
cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF
: SM_GET_SENDMAIL_CF;
break;
case 'B': /* body type */
CHECK_AGAINST_OPMODE(j);
BlankEnvelope.e_bodytype = newstr(optarg);
break;
case 'C': /* select configuration file (already done) */
if (RealUid != 0)
warn_C_flag = true;
conffile = newstr(optarg);
dp = drop_privileges(true);
setstat(dp);
safecf = false;
break;
case 'D':
case 'd': /* debugging */
/* already done */
break;
case 'f': /* from address */
case 'r': /* obsolete -f flag */
CHECK_AGAINST_OPMODE(j);
if (from != NULL)
{
usrerr("More than one \"from\" person");
ExitStat = EX_USAGE;
break;
}
if (optarg[0] == '\0')
from = newstr("<>");
else
from = newstr(denlstring(optarg, true, true));
if (strcmp(RealUserName, from) != 0)
warn_f_flag = j;
break;
case 'F': /* set full name */
CHECK_AGAINST_OPMODE(j);
FullName = newstr(optarg);
break;
case 'G': /* relay (gateway) submission */
/* already set */
CHECK_AGAINST_OPMODE(j);
break;
case 'h': /* hop count */
CHECK_AGAINST_OPMODE(j);
BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep,
10);
(void) sm_snprintf(buf, sizeof(buf), "%d",
BlankEnvelope.e_hopcount);
macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf);
if (*ep)
{
usrerr("Bad hop count (%s)", optarg);
ExitStat = EX_USAGE;
}
break;
case 'L': /* program label */
/* already set */
break;
case 'n': /* don't alias */
CHECK_AGAINST_OPMODE(j);
NoAlias = true;
break;
case 'N': /* delivery status notifications */
CHECK_AGAINST_OPMODE(j);
DefaultNotify |= QHASNOTIFY;
macdefine(&BlankEnvelope.e_macro, A_TEMP,
macid("{dsn_notify}"), optarg);
if (sm_strcasecmp(optarg, "never") == 0)
break;
for (p = optarg; p != NULL; optarg = p)
{
p = strchr(p, ',');
if (p != NULL)
*p++ = '\0';
if (sm_strcasecmp(optarg, "success") == 0)
DefaultNotify |= QPINGONSUCCESS;
else if (sm_strcasecmp(optarg, "failure") == 0)
DefaultNotify |= QPINGONFAILURE;
else if (sm_strcasecmp(optarg, "delay") == 0)
DefaultNotify |= QPINGONDELAY;
else
{
usrerr("Invalid -N argument");
ExitStat = EX_USAGE;
}
}
break;
case 'o': /* set option */
setoption(*optarg, optarg + 1, false, true,
&BlankEnvelope);
break;
case 'O': /* set option (long form) */
setoption(' ', optarg, false, true, &BlankEnvelope);
break;
case 'p': /* set protocol */
CHECK_AGAINST_OPMODE(j);
p = strchr(optarg, ':');
if (p != NULL)
{
*p++ = '\0';
if (*p != '\0')
{
i = strlen(p) + 1;
ep = sm_malloc_x(i);
cleanstrcpy(ep, p, i);
macdefine(&BlankEnvelope.e_macro,
A_HEAP, 's', ep);
}
}
if (*optarg != '\0')
{
i = strlen(optarg) + 1;
ep = sm_malloc_x(i);
cleanstrcpy(ep, optarg, i);
macdefine(&BlankEnvelope.e_macro, A_HEAP,
'r', ep);
}
break;
case 'Q': /* change quarantining on queued items */
/* sanity check */
if (OpMode != MD_DELIVER &&
OpMode != MD_QUEUERUN)
{
usrerr("Can not use -Q with -b%c", OpMode);
ExitStat = EX_USAGE;
break;
}
if (OpMode == MD_DELIVER)
set_op_mode(MD_QUEUERUN);
FullName = NULL;
quarantining = newstr(optarg);
break;
case 'q': /* run queue files at intervals */
/* sanity check */
if (OpMode != MD_DELIVER &&
OpMode != MD_DAEMON &&
OpMode != MD_FGDAEMON &&
OpMode != MD_PRINT &&
OpMode != MD_PRINTNQE &&
OpMode != MD_QUEUERUN)
{
usrerr("Can not use -q with -b%c", OpMode);
ExitStat = EX_USAGE;
break;
}
/* don't override -bd, -bD or -bp */
if (OpMode == MD_DELIVER)
set_op_mode(MD_QUEUERUN);
FullName = NULL;
negate = optarg[0] == '!';
if (negate)
{
/* negate meaning of pattern match */
optarg++; /* skip '!' for next switch */
}
switch (optarg[0])
{
case 'G': /* Limit by queue group name */
if (negate)
{
usrerr("Can not use -q!G");
ExitStat = EX_USAGE;
break;
}
if (queuegroup != NULL)
{
usrerr("Can not use multiple -qG options");
ExitStat = EX_USAGE;
break;
}
queuegroup = newstr(&optarg[1]);
break;
case 'I': /* Limit by ID */
new = (QUEUE_CHAR *) xalloc(sizeof(*new));
new->queue_match = newstr(&optarg[1]);
new->queue_negate = negate;
new->queue_next = QueueLimitId;
QueueLimitId = new;
break;
case 'R': /* Limit by recipient */
new = (QUEUE_CHAR *) xalloc(sizeof(*new));
new->queue_match = newstr(&optarg[1]);
new->queue_negate = negate;
new->queue_next = QueueLimitRecipient;
QueueLimitRecipient = new;
break;
case 'S': /* Limit by sender */
new = (QUEUE_CHAR *) xalloc(sizeof(*new));
new->queue_match = newstr(&optarg[1]);
new->queue_negate = negate;
new->queue_next = QueueLimitSender;
QueueLimitSender = new;
break;
case 'f': /* foreground queue run */
foregroundqueue = true;
break;
case 'Q': /* Limit by quarantine message */
if (optarg[1] != '\0')
{
new = (QUEUE_CHAR *) xalloc(sizeof(*new));
new->queue_match = newstr(&optarg[1]);
new->queue_negate = negate;
new->queue_next = QueueLimitQuarantine;
QueueLimitQuarantine = new;
}
QueueMode = QM_QUARANTINE;
break;
case 'L': /* act on lost items */
QueueMode = QM_LOST;
break;
case 'p': /* Persistent queue */
queuepersistent = true;
if (QueueIntvl == 0)
QueueIntvl = 1;
if (optarg[1] == '\0')
break;
++optarg;
/* FALLTHROUGH */
default:
i = Errors;
QueueIntvl = convtime(optarg, 'm');
if (QueueIntvl < 0)
{
usrerr("Invalid -q value");
ExitStat = EX_USAGE;
}
/* check for bad conversion */
if (i < Errors)
ExitStat = EX_USAGE;
break;
}
break;
case 'R': /* DSN RET: what to return */
CHECK_AGAINST_OPMODE(j);
if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags))
{
usrerr("Duplicate -R flag");
ExitStat = EX_USAGE;
break;
}
BlankEnvelope.e_flags |= EF_RET_PARAM;
if (sm_strcasecmp(optarg, "hdrs") == 0)
BlankEnvelope.e_flags |= EF_NO_BODY_RETN;
else if (sm_strcasecmp(optarg, "full") != 0)
{
usrerr("Invalid -R value");
ExitStat = EX_USAGE;
}
macdefine(&BlankEnvelope.e_macro, A_TEMP,
macid("{dsn_ret}"), optarg);
break;
case 't': /* read recipients from message */
CHECK_AGAINST_OPMODE(j);
GrabTo = true;
break;
case 'V': /* DSN ENVID: set "original" envelope id */
CHECK_AGAINST_OPMODE(j);
if (!xtextok(optarg))
{
usrerr("Invalid syntax in -V flag");
ExitStat = EX_USAGE;
}
else
{
BlankEnvelope.e_envid = newstr(optarg);
macdefine(&BlankEnvelope.e_macro, A_TEMP,
macid("{dsn_envid}"), optarg);
}
break;
case 'X': /* traffic log file */
dp = drop_privileges(true);
setstat(dp);
if (stat(optarg, &traf_st) == 0 &&
S_ISFIFO(traf_st.st_mode))
TrafficLogFile = sm_io_open(SmFtStdio,
SM_TIME_DEFAULT,
optarg,
SM_IO_WRONLY, NULL);
else
TrafficLogFile = sm_io_open(SmFtStdio,
SM_TIME_DEFAULT,
optarg,
SM_IO_APPEND, NULL);
if (TrafficLogFile == NULL)
{
syserr("cannot open %s", optarg);
ExitStat = EX_CANTCREAT;
break;
}
(void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT,
NULL, SM_IO_LBF, 0);
break;
/* compatibility flags */
case 'c': /* connect to non-local mailers */
case 'i': /* don't let dot stop me */
case 'm': /* send to me too */
case 'T': /* set timeout interval */
case 'v': /* give blow-by-blow description */
setoption(j, "T", false, true, &BlankEnvelope);
break;
case 'e': /* error message disposition */
case 'M': /* define macro */
setoption(j, optarg, false, true, &BlankEnvelope);
break;
case 's': /* save From lines in headers */
setoption('f', "T", false, true, &BlankEnvelope);
break;
#ifdef DBM
case 'I': /* initialize alias DBM file */
set_op_mode(MD_INITALIAS);
break;
#endif /* DBM */
#if defined(__osf__) || defined(_AIX3)
case 'x': /* random flag that OSF/1 & AIX mailx passes */
break;
#endif /* defined(__osf__) || defined(_AIX3) */
#if defined(sony_news)
case 'E':
case 'J': /* ignore flags for Japanese code conversion
implemented on Sony NEWS */
break;
#endif /* defined(sony_news) */
default:
finis(true, true, EX_USAGE);
/* NOTREACHED */
break;
}
}
/* if we've had errors so far, exit now */
if ((ExitStat != EX_OK && OpMode != MD_TEST && OpMode != MD_CHECKCONFIG) ||
ExitStat == EX_OSERR)
{
finis(false, true, ExitStat);
/* NOTREACHED */
}
if (bitset(SUBMIT_MTA, SubmitMode))
{
/* If set daemon_flags on command line, don't reset it */
if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL)
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{daemon_flags}"), "CC f");
}
else if (OpMode == MD_DELIVER || OpMode == MD_SMTP)
{
SubmitMode = SUBMIT_MSA;
/* If set daemon_flags on command line, don't reset it */
if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL)
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{daemon_flags}"), "c u");
}
/*
** Do basic initialization.
** Read system control file.
** Extract special fields for local use.
*/
#if XDEBUG
checkfd012("before readcf");
#endif /* XDEBUG */
vendor_pre_defaults(&BlankEnvelope);
readcf(getcfname(OpMode, SubmitMode, cftype, conffile),
safecf, &BlankEnvelope);
#if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_)
ConfigFileRead = true;
#endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */
vendor_post_defaults(&BlankEnvelope);
/* now we can complain about missing fds */
if (MissingFds != 0 && LogLevel > 8)
{
char mbuf[MAXLINE];
mbuf[0] = '\0';
if (bitset(1 << STDIN_FILENO, MissingFds))
(void) sm_strlcat(mbuf, ", stdin", sizeof(mbuf));
if (bitset(1 << STDOUT_FILENO, MissingFds))
(void) sm_strlcat(mbuf, ", stdout", sizeof(mbuf));
if (bitset(1 << STDERR_FILENO, MissingFds))
(void) sm_strlcat(mbuf, ", stderr", sizeof(mbuf));
/* Notice: fill_errno is from high above: fill_fd() */
sm_syslog(LOG_WARNING, NOQID,
"File descriptors missing on startup: %s; %s",
&mbuf[2], sm_errstring(fill_errno));
}
/* Remove the ability for a normal user to send signals */
if (RealUid != 0 && RealUid != geteuid())
{
uid_t new_uid = geteuid();
#if HASSETREUID
/*
** Since we can differentiate between uid and euid,
** make the uid a different user so the real user
** can't send signals. However, it doesn't need to be
** root (euid has root).
*/
if (new_uid == 0)
new_uid = DefUid;
if (tTd(47, 5))
sm_dprintf("Changing real uid to %d\n", (int) new_uid);
if (setreuid(new_uid, geteuid()) < 0)
{
syserr("main: setreuid(%d, %d) failed",
(int) new_uid, (int) geteuid());
finis(false, true, EX_OSERR);
/* NOTREACHED */
}
if (tTd(47, 10))
sm_dprintf("Now running as e/ruid %d:%d\n",
(int) geteuid(), (int) getuid());
#else /* HASSETREUID */
/*
** Have to change both effective and real so need to
** change them both to effective to keep privs.
*/
if (tTd(47, 5))
sm_dprintf("Changing uid to %d\n", (int) new_uid);
if (setuid(new_uid) < 0)
{
syserr("main: setuid(%d) failed", (int) new_uid);
finis(false, true, EX_OSERR);
/* NOTREACHED */
}
if (tTd(47, 10))
sm_dprintf("Now running as e/ruid %d:%d\n",
(int) geteuid(), (int) getuid());
#endif /* HASSETREUID */
}
#if NAMED_BIND
if (FallbackMX != NULL)
(void) getfallbackmxrr(FallbackMX);
#endif /* NAMED_BIND */
if (SuperSafe == SAFE_INTERACTIVE && !SM_IS_INTERACTIVE(CurEnv->e_sendmode))
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n");
}
if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON))
{
usrerr("Mail submission program cannot be used as daemon");
finis(false, true, EX_USAGE);
}
if (OpMode == MD_DELIVER || OpMode == MD_SMTP ||
OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP ||
OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)
makeworkgroups();
/* set up the basic signal handlers */
if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN)
(void) sm_signal(SIGINT, intsig);
(void) sm_signal(SIGTERM, intsig);
/* Enforce use of local time (null string overrides this) */
if (TimeZoneSpec == NULL)
unsetenv("TZ");
else if (TimeZoneSpec[0] != '\0')
sm_setuserenv("TZ", TimeZoneSpec);
else
sm_setuserenv("TZ", NULL);
tzset();
/* initialize mailbox database */
i = sm_mbdb_initialize(Mbdb);
if (i != EX_OK)
{
usrerr("Can't initialize mailbox database \"%s\": %s",
Mbdb, sm_strexit(i));
ExitStat = i;
}
/* avoid denial-of-service attacks */
resetlimits();
if (OpMode == MD_TEST)
{
/* can't be done after readcf if RunAs* is used */
dp = drop_privileges(true);
if (dp != EX_OK)
{
finis(false, true, dp);
/* NOTREACHED */
}
}
else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON)
{
/* drop privileges -- daemon mode done after socket/bind */
dp = drop_privileges(false);
setstat(dp);
if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0))
{
usrerr("Mail submission program must have RunAsUser set to non root user");
finis(false, true, EX_CONFIG);
/* NOTREACHED */
}
}
#if NAMED_BIND
_res.retry = TimeOuts.res_retry[RES_TO_DEFAULT];
_res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT];
#endif /* NAMED_BIND */
/*
** Find our real host name for future logging.
*/
authinfo = getauthinfo(STDIN_FILENO, &forged);
macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo);
/* suppress error printing if errors mailed back or whatever */
if (BlankEnvelope.e_errormode != EM_PRINT)
HoldErrs = true;
/* set up the $=m class now, after .cf has a chance to redefine $m */
expand("\201m", jbuf, sizeof(jbuf), &BlankEnvelope);
if (jbuf[0] != '\0')
setclass('m', jbuf);
/* probe interfaces and locate any additional names */
if (DontProbeInterfaces != DPI_PROBENONE)
load_if_names();
if (tTd(0, 10))
{
char pidpath[MAXPATHLEN];
/* Now we know which .cf file we use */
sm_dprintf(" Conf file:\t%s (selected)\n",
getcfname(OpMode, SubmitMode, cftype, conffile));
expand(PidFile, pidpath, sizeof(pidpath), &BlankEnvelope);
sm_dprintf(" Pid file:\t%s (selected)\n", pidpath);
}
if (tTd(0, 1))
{
sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============");
sm_dprintf("\n (short domain name) $w = ");
xputs(sm_debug_file(), macvalue('w', &BlankEnvelope));
sm_dprintf("\n (canonical domain name) $j = ");
xputs(sm_debug_file(), macvalue('j', &BlankEnvelope));
sm_dprintf("\n (subdomain name) $m = ");
xputs(sm_debug_file(), macvalue('m', &BlankEnvelope));
sm_dprintf("\n (node name) $k = ");
xputs(sm_debug_file(), macvalue('k', &BlankEnvelope));
sm_dprintf("\n========================================================\n\n");
}
/*
** Do more command line checking -- these are things that
** have to modify the results of reading the config file.
*/
/* process authorization warnings from command line */
if (warn_C_flag)
auth_warning(&BlankEnvelope, "Processed by %s with -C %s",
RealUserName, conffile);
if (Warn_Q_option && !wordinclass(RealUserName, 't'))
auth_warning(&BlankEnvelope, "Processed from queue %s",
QueueDir);
if (sysloglabel != NULL && !wordinclass(RealUserName, 't') &&
RealUid != 0 && RealUid != TrustedUid && LogLevel > 1)
sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label",
(int) RealUid);
/* check body type for legality */
i = check_bodytype(BlankEnvelope.e_bodytype);
if (i == BODYTYPE_ILLEGAL)
{
usrerr("Illegal body type %s", BlankEnvelope.e_bodytype);
BlankEnvelope.e_bodytype = NULL;
}
else if (i != BODYTYPE_NONE)
SevenBitInput = (i == BODYTYPE_7BIT);
/* tweak default DSN notifications */
if (DefaultNotify == 0)
DefaultNotify = QPINGONFAILURE|QPINGONDELAY;
/* check for sane configuration level */
if (ConfigLevel > MAXCONFIGLEVEL)
{
syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)",
ConfigLevel, Version, MAXCONFIGLEVEL);
}
/* need MCI cache to have persistence */
if (HostStatDir != NULL && MaxMciCache == 0)
{
HostStatDir = NULL;
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n");
}
/* need HostStatusDir in order to have SingleThreadDelivery */
if (SingleThreadDelivery && HostStatDir == NULL)
{
SingleThreadDelivery = false;
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Warning: HostStatusDirectory required for SingleThreadDelivery\n");
}
#if _FFR_MEMSTAT
j = sm_memstat_open();
if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4)
{
sm_syslog(LOG_WARNING, NOQID,
"cannot get memory statistics, settings ignored, error=%d"
, j);
}
#endif /* _FFR_MEMSTAT */
/* check for permissions */
if (RealUid != 0 &&
RealUid != TrustedUid)
{
char *action = NULL;
switch (OpMode)
{
case MD_QUEUERUN:
if (quarantining != NULL)
action = "quarantine jobs";
else
{
/* Normal users can do a single queue run */
if (QueueIntvl == 0)
break;
}
/* but not persistent queue runners */
if (action == NULL)
action = "start a queue runner daemon";
/* FALLTHROUGH */
case MD_PURGESTAT:
if (action == NULL)
action = "purge host status";
/* FALLTHROUGH */
case MD_DAEMON:
case MD_FGDAEMON:
if (action == NULL)
action = "run daemon";
if (tTd(65, 1))
sm_dprintf("Deny user %d attempt to %s\n",
(int) RealUid, action);
if (LogLevel > 1)
sm_syslog(LOG_ALERT, NOQID,
"user %d attempted to %s",
(int) RealUid, action);
HoldErrs = false;
usrerr("Permission denied (real uid not trusted)");
finis(false, true, EX_USAGE);
/* NOTREACHED */
break;
case MD_VERIFY:
if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags))
{
/*
** If -bv and RestrictExpand,
** drop privs to prevent normal
** users from reading private
** aliases/forwards/:include:s
*/
if (tTd(65, 1))
sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n",
(int) RealUid);
dp = drop_privileges(true);
/* Fake address safety */
if (tTd(65, 1))
sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n");
setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail);
if (dp != EX_OK)
{
if (tTd(65, 1))
sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n",
(int) RealUid);
CurEnv->e_id = NULL;
finis(true, true, dp);
/* NOTREACHED */
}
}
break;
case MD_TEST:
case MD_CHECKCONFIG:
case MD_PRINT:
case MD_PRINTNQE:
case MD_FREEZE:
case MD_HOSTSTAT:
/* Nothing special to check */
break;
case MD_INITALIAS:
if (!wordinclass(RealUserName, 't'))
{
if (tTd(65, 1))
sm_dprintf("Deny user %d attempt to rebuild the alias map\n",
(int) RealUid);
if (LogLevel > 1)
sm_syslog(LOG_ALERT, NOQID,
"user %d attempted to rebuild the alias map",
(int) RealUid);
HoldErrs = false;
usrerr("Permission denied (real uid not trusted)");
finis(false, true, EX_USAGE);
/* NOTREACHED */
}
if (UseMSP)
{
HoldErrs = false;
usrerr("User %d cannot rebuild aliases in mail submission program",
(int) RealUid);
finis(false, true, EX_USAGE);
/* NOTREACHED */
}
/* FALLTHROUGH */
default:
if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) &&
Verbose != 0)
{
/*
** If -v and RestrictExpand, reset
** Verbose to prevent normal users
** from seeing the expansion of
** aliases/forwards/:include:s
*/
if (tTd(65, 1))
sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n",
(int) RealUid);
Verbose = 0;
}
break;
}
}
if (MeToo)
BlankEnvelope.e_flags |= EF_METOO;
switch (OpMode)
{
case MD_TEST:
/* don't have persistent host status in test mode */
HostStatDir = NULL;
/* FALLTHROUGH */
case MD_CHECKCONFIG:
if (Verbose == 0)
Verbose = 2;
BlankEnvelope.e_errormode = EM_PRINT;
HoldErrs = false;
break;
case MD_VERIFY:
BlankEnvelope.e_errormode = EM_PRINT;
HoldErrs = false;
/* arrange to exit cleanly on hangup signal */
if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL)
(void) sm_signal(SIGHUP, intsig);
if (geteuid() != 0)
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Notice: -bv may give misleading output for non-privileged user\n");
break;
case MD_FGDAEMON:
run_in_foreground = true;
set_op_mode(MD_DAEMON);
/* FALLTHROUGH */
case MD_DAEMON:
vendor_daemon_setup(&BlankEnvelope);
/* remove things that don't make sense in daemon mode */
FullName = NULL;
GrabTo = false;
/* arrange to restart on hangup signal */
if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/')
sm_syslog(LOG_WARNING, NOQID,
"daemon invoked without full pathname; kill -1 won't work");
break;
case MD_INITALIAS:
Verbose = 2;
BlankEnvelope.e_errormode = EM_PRINT;
HoldErrs = false;
/* FALLTHROUGH */
default:
/* arrange to exit cleanly on hangup signal */
if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL)
(void) sm_signal(SIGHUP, intsig);
break;
}
/* special considerations for FullName */
if (FullName != NULL)
{
char *full = NULL;
/* full names can't have newlines */
if (strchr(FullName, '\n') != NULL)
{
full = newstr(denlstring(FullName, true, true));
FullName = full;
}
/* check for characters that may have to be quoted */
if (!rfc822_string(FullName))
{
/*
** Quote a full name with special characters
** as a comment so crackaddr() doesn't destroy
** the name portion of the address.
*/
FullName = addquotes(FullName, NULL);
if (full != NULL)
sm_free(full); /* XXX */
}
}
/* do heuristic mode adjustment */
if (Verbose)
{
/* turn off noconnect option */
setoption('c', "F", true, false, &BlankEnvelope);
/* turn on interactive delivery */
setoption('d', "", true, false, &BlankEnvelope);
}
#ifdef VENDOR_CODE
/* check for vendor mismatch */
if (VendorCode != VENDOR_CODE)
{
message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s",
getvendor(VENDOR_CODE), getvendor(VendorCode));
}
#endif /* VENDOR_CODE */
/* check for out of date configuration level */
if (ConfigLevel < MAXCONFIGLEVEL)
{
message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d",
Version, MAXCONFIGLEVEL, ConfigLevel);
}
if (ConfigLevel < 3)
UseErrorsTo = true;
/* set options that were previous macros */
if (SmtpGreeting == NULL)
{
if (ConfigLevel < 7 &&
(p = macvalue('e', &BlankEnvelope)) != NULL)
SmtpGreeting = newstr(p);
else
SmtpGreeting = "\201j Sendmail \201v ready at \201b";
}
if (UnixFromLine == NULL)
{
if (ConfigLevel < 7 &&
(p = macvalue('l', &BlankEnvelope)) != NULL)
UnixFromLine = newstr(p);
else
UnixFromLine = "From \201g \201d";
}
SmtpError[0] = '\0';
/* our name for SMTP codes */
expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope);
if (jbuf[0] == '\0')
PSTRSET(MyHostName, "localhost");
else
PSTRSET(MyHostName, jbuf);
if (strchr(MyHostName, '.') == NULL)
message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?",
MyHostName);
/* make certain that this name is part of the $=w class */
setclass('w', MyHostName);
/* fill in the structure of the *default* queue */
st = stab("mqueue", ST_QUEUE, ST_FIND);
if (st == NULL)
syserr("No default queue (mqueue) defined");
else
set_def_queueval(st->s_quegrp, true);
/* the indices of built-in mailers */
st = stab("local", ST_MAILER, ST_FIND);
if (st != NULL)
LocalMailer = st->s_mailer;
else if (OpMode != MD_TEST || !warn_C_flag)
syserr("No local mailer defined");
st = stab("prog", ST_MAILER, ST_FIND);
if (st == NULL)
syserr("No prog mailer defined");
else
{
ProgMailer = st->s_mailer;
clrbitn(M_MUSER, ProgMailer->m_flags);
}
st = stab("*file*", ST_MAILER, ST_FIND);
if (st == NULL)
syserr("No *file* mailer defined");
else
{
FileMailer = st->s_mailer;
clrbitn(M_MUSER, FileMailer->m_flags);
}
st = stab("*include*", ST_MAILER, ST_FIND);
if (st == NULL)
syserr("No *include* mailer defined");
else
InclMailer = st->s_mailer;
if (ConfigLevel < 6)
{
/* heuristic tweaking of local mailer for back compat */
if (LocalMailer != NULL)
{
setbitn(M_ALIASABLE, LocalMailer->m_flags);
setbitn(M_HASPWENT, LocalMailer->m_flags);
setbitn(M_TRYRULESET5, LocalMailer->m_flags);
setbitn(M_CHECKINCLUDE, LocalMailer->m_flags);
setbitn(M_CHECKPROG, LocalMailer->m_flags);
setbitn(M_CHECKFILE, LocalMailer->m_flags);
setbitn(M_CHECKUDB, LocalMailer->m_flags);
}
if (ProgMailer != NULL)
setbitn(M_RUNASRCPT, ProgMailer->m_flags);
if (FileMailer != NULL)
setbitn(M_RUNASRCPT, FileMailer->m_flags);
}
if (ConfigLevel < 7)
{
if (LocalMailer != NULL)
setbitn(M_VRFY250, LocalMailer->m_flags);
if (ProgMailer != NULL)
setbitn(M_VRFY250, ProgMailer->m_flags);
if (FileMailer != NULL)
setbitn(M_VRFY250, FileMailer->m_flags);
}
/* MIME Content-Types that cannot be transfer encoded */
setclass('n', "multipart/signed");
/* MIME message/xxx subtypes that can be treated as messages */
setclass('s', "rfc822");
/* MIME Content-Transfer-Encodings that can be encoded */
setclass('e', "7bit");
setclass('e', "8bit");
setclass('e', "binary");
#ifdef USE_B_CLASS
/* MIME Content-Types that should be treated as binary */
setclass('b', "image");
setclass('b', "audio");
setclass('b', "video");
setclass('b', "application/octet-stream");
#endif /* USE_B_CLASS */
/* MIME headers which have fields to check for overflow */
setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition");
setclass(macid("{checkMIMEFieldHeaders}"), "content-type");
/* MIME headers to check for length overflow */
setclass(macid("{checkMIMETextHeaders}"), "content-description");
/* MIME headers to check for overflow and rebalance */
setclass(macid("{checkMIMEHeaders}"), "content-disposition");
setclass(macid("{checkMIMEHeaders}"), "content-id");
setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding");
setclass(macid("{checkMIMEHeaders}"), "content-type");
setclass(macid("{checkMIMEHeaders}"), "mime-version");
/* Macros to save in the queue file -- don't remove any */
setclass(macid("{persistentMacros}"), "r");
setclass(macid("{persistentMacros}"), "s");
setclass(macid("{persistentMacros}"), "_");
setclass(macid("{persistentMacros}"), "{if_addr}");
setclass(macid("{persistentMacros}"), "{daemon_flags}");
/* operate in queue directory */
if (QueueDir == NULL || *QueueDir == '\0')
{
if (OpMode != MD_TEST)
{
syserr("QueueDirectory (Q) option must be set");
ExitStat = EX_CONFIG;
}
}
else
{
if (OpMode != MD_TEST)
setup_queues(OpMode == MD_DAEMON);
}
/* check host status directory for validity */
if (HostStatDir != NULL && !path_is_dir(HostStatDir, false))
{
/* cannot use this value */
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Warning: Cannot use HostStatusDirectory = %s: %s\n",
HostStatDir, sm_errstring(errno));
HostStatDir = NULL;
}
if (OpMode == MD_QUEUERUN &&
RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags))
{
struct stat stbuf;
/* check to see if we own the queue directory */
if (stat(".", &stbuf) < 0)
syserr("main: cannot stat %s", QueueDir);
if (stbuf.st_uid != RealUid)
{
/* nope, really a botch */
HoldErrs = false;
usrerr("You do not have permission to process the queue");
finis(false, true, EX_NOPERM);
/* NOTREACHED */
}
}
#if MILTER
/* sanity checks on milter filters */
if (OpMode == MD_DAEMON || OpMode == MD_SMTP)
{
milter_config(InputFilterList, InputFilters, MAXFILTERS);
setup_daemon_milters();
}
#endif /* MILTER */
/* Convert queuegroup string to qgrp number */
if (queuegroup != NULL)
{
qgrp = name2qid(queuegroup);
if (qgrp == NOQGRP)
{
HoldErrs = false;
usrerr("Queue group %s unknown", queuegroup);
finis(false, true, ExitStat);
/* NOTREACHED */
}
}
/* if checking config or have had errors so far, exit now */
if (OpMode == MD_CHECKCONFIG || (ExitStat != EX_OK && OpMode != MD_TEST))
{
finis(false, true, ExitStat);
/* NOTREACHED */
}
#if SASL
/* sendmail specific SASL initialization */
sm_sasl_init();
#endif /* SASL */
#if XDEBUG
checkfd012("before main() initmaps");
#endif /* XDEBUG */
/*
** Do operation-mode-dependent initialization.
*/
switch (OpMode)
{
case MD_PRINT:
/* print the queue */
HoldErrs = false;
(void) dropenvelope(&BlankEnvelope, true, false);
(void) sm_signal(SIGPIPE, sigpipe);
if (qgrp != NOQGRP)
{
int j;
/* Selecting a particular queue group to run */
for (j = 0; j < Queue[qgrp]->qg_numqueues; j++)
{
if (StopRequest)
stop_sendmail();
(void) print_single_queue(qgrp, j);
}
finis(false, true, EX_OK);
/* NOTREACHED */
}
printqueue();
finis(false, true, EX_OK);
/* NOTREACHED */
break;
case MD_PRINTNQE:
/* print number of entries in queue */
(void) dropenvelope(&BlankEnvelope, true, false);
(void) sm_signal(SIGPIPE, sigpipe);
printnqe(smioout, NULL);
finis(false, true, EX_OK);
/* NOTREACHED */
break;
case MD_QUEUERUN:
/* only handle quarantining here */
if (quarantining == NULL)
break;
if (QueueMode != QM_QUARANTINE &&
QueueMode != QM_NORMAL)
{
HoldErrs = false;
usrerr("Can not use -Q with -q%c", QueueMode);
ExitStat = EX_USAGE;
finis(false, true, ExitStat);
/* NOTREACHED */
}
quarantine_queue(quarantining, qgrp);
finis(false, true, EX_OK);
break;
case MD_HOSTSTAT:
(void) sm_signal(SIGPIPE, sigpipe);
(void) mci_traverse_persistent(mci_print_persistent, NULL);
finis(false, true, EX_OK);
/* NOTREACHED */
break;
case MD_PURGESTAT:
(void) mci_traverse_persistent(mci_purge_persistent, NULL);
finis(false, true, EX_OK);
/* NOTREACHED */
break;
case MD_INITALIAS:
/* initialize maps */
initmaps();
finis(false, true, ExitStat);
/* NOTREACHED */
break;
case MD_SMTP:
case MD_DAEMON:
/* reset DSN parameters */
DefaultNotify = QPINGONFAILURE|QPINGONDELAY;
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{dsn_notify}"), NULL);
BlankEnvelope.e_envid = NULL;
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{dsn_envid}"), NULL);
BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN);
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{dsn_ret}"), NULL);
/* don't open maps for daemon -- done below in child */
break;
}
if (tTd(0, 15))
{
/* print configuration table (or at least part of it) */
if (tTd(0, 90))
printrules();
for (i = 0; i < MAXMAILERS; i++)
{
if (Mailer[i] != NULL)
printmailer(sm_debug_file(), Mailer[i]);
}
}
/*
** Switch to the main envelope.
*/
CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope,
sm_rpool_new_x(NULL));
MainEnvelope.e_flags = BlankEnvelope.e_flags;
/*
** If test mode, read addresses from stdin and process.
*/
if (OpMode == MD_TEST)
{
if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL)))
Verbose = 2;
if (Verbose)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n");
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Enter <ruleset> <address>\n");
}
macdefine(&(MainEnvelope.e_macro), A_PERM,
macid("{addr_type}"), "e r");
for (;;)
{
SM_TRY
{
(void) sm_signal(SIGINT, intindebug);
(void) sm_releasesignal(SIGINT);
if (Verbose == 2)
(void) sm_io_fprintf(smioout,
SM_TIME_DEFAULT,
"> ");
(void) sm_io_flush(smioout, SM_TIME_DEFAULT);
if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf,
sizeof(buf)) < 0)
testmodeline("/quit", &MainEnvelope);
p = strchr(buf, '\n');
if (p != NULL)
*p = '\0';
if (Verbose < 2)
(void) sm_io_fprintf(smioout,
SM_TIME_DEFAULT,
"> %s\n", buf);
testmodeline(buf, &MainEnvelope);
}
SM_EXCEPT(exc, "[!F]*")
{
/*
** 8.10 just prints \n on interrupt.
** I'm printing the exception here in case
** sendmail is extended to raise additional
** exceptions in this context.
*/
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"\n");
sm_exc_print(exc, smioout);
}
SM_END_TRY
}
}
#if STARTTLS
tls_ok = true;
if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER ||
OpMode == MD_ARPAFTP)
{
/* check whether STARTTLS is turned off for the client */
if (chkclientmodifiers(D_NOTLS))
tls_ok = false;
}
else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON ||
OpMode == MD_SMTP)
{
/* check whether STARTTLS is turned off */
if (chkdaemonmodifiers(D_NOTLS) && chkclientmodifiers(D_NOTLS))
tls_ok = false;
}
else /* other modes don't need STARTTLS */
tls_ok = false;
if (tls_ok)
{
/* basic TLS initialization */
tls_ok = init_tls_library(FipsMode);
if (!tls_ok && FipsMode)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"ERROR: FIPSMode failed to initialize\n");
exit(EX_USAGE);
}
}
if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER))
{
/* disable TLS for client */
setclttls(false);
}
#endif /* STARTTLS */
/*
** If collecting stuff from the queue, go start doing that.
*/
if (OpMode == MD_QUEUERUN && QueueIntvl == 0)
{
pid_t pid = -1;
#if STARTTLS
/* init TLS for client, ignore result for now */
(void) initclttls(tls_ok);
#endif /* STARTTLS */
/*
** The parent process of the caller of runqueue() needs
** to stay around for a possible SIGTERM. The SIGTERM will
** tell this process that all of the queue runners children
** need to be sent SIGTERM as well. At the same time, we
** want to return control to the command line. So we do an
** extra fork().
*/
if (Verbose || foregroundqueue || (pid = fork()) <= 0)
{
/*
** If the fork() failed we should still try to do
** the queue run. If it succeeded then the child
** is going to start the run and wait for all
** of the children to finish.
*/
if (pid == 0)
{
/* Reset global flags */
RestartRequest = NULL;
ShutdownRequest = NULL;
PendingSignal = 0;
/* disconnect from terminal */
disconnect(2, CurEnv);
}
CurrentPid = getpid();
if (qgrp != NOQGRP)
{
int rwgflags = RWG_NONE;
/*
** To run a specific queue group mark it to
** be run, select the work group it's in and
** increment the work counter.
*/
for (i = 0; i < NumQueue && Queue[i] != NULL;
i++)
Queue[i]->qg_nextrun = (time_t) -1;
Queue[qgrp]->qg_nextrun = 0;
if (Verbose)
rwgflags |= RWG_VERBOSE;
if (queuepersistent)
rwgflags |= RWG_PERSISTENT;
rwgflags |= RWG_FORCE;
(void) run_work_group(Queue[qgrp]->qg_wgrp,
rwgflags);
}
else
(void) runqueue(false, Verbose,
queuepersistent, true);
/* set the title to make it easier to find */
sm_setproctitle(true, CurEnv, "Queue control");
(void) sm_signal(SIGCHLD, SIG_DFL);
while (CurChildren > 0)
{
int status;
pid_t ret;
errno = 0;
while ((ret = sm_wait(&status)) <= 0)
{
if (errno == ECHILD)
{
/*
** Oops... something got messed
** up really bad. Waiting for
** non-existent children
** shouldn't happen. Let's get
** out of here.
*/
CurChildren = 0;
break;
}
continue;
}
/* something is really really wrong */
if (errno == ECHILD)
{
sm_syslog(LOG_ERR, NOQID,
"queue control process: lost all children: wait returned ECHILD");
break;
}
/* Only drop when a child gives status */
if (WIFSTOPPED(status))
continue;
proc_list_drop(ret, status, NULL);
}
}
finis(true, true, ExitStat);
/* NOTREACHED */
}
# if SASL
if (OpMode == MD_SMTP || OpMode == MD_DAEMON)
{
/* check whether AUTH is turned off for the server */
if (!chkdaemonmodifiers(D_NOAUTH) &&
(i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK)
syserr("!sasl_server_init failed! [%s]",
sasl_errstring(i, NULL, NULL));
}
# endif /* SASL */
if (OpMode == MD_SMTP)
{
proc_list_add(CurrentPid, "Sendmail SMTP Agent",
PROC_DAEMON, 0, -1, NULL);
/* clean up background delivery children */
(void) sm_signal(SIGCHLD, reapchild);
}
/*
** If a daemon, wait for a request.
** getrequests will always return in a child.
** If we should also be processing the queue, start
** doing it in background.
** We check for any errors that might have happened
** during startup.
*/
if (OpMode == MD_DAEMON || QueueIntvl > 0)
{
char dtype[200];
/* avoid cleanup in finis(), DaemonPid will be set below */
DaemonPid = 0;
if (!run_in_foreground && !tTd(99, 100))
{
/* put us in background */
i = fork();
if (i < 0)
syserr("daemon: cannot fork");
if (i != 0)
{
finis(false, true, EX_OK);
/* NOTREACHED */
}
/*
** Initialize exception stack and default exception
** handler for child process.
*/
/* Reset global flags */
RestartRequest = NULL;
RestartWorkGroup = false;
ShutdownRequest = NULL;
PendingSignal = 0;
CurrentPid = getpid();
sm_exc_newthread(fatal_error);
/* disconnect from our controlling tty */
disconnect(2, &MainEnvelope);
}
dtype[0] = '\0';
if (OpMode == MD_DAEMON)
{
(void) sm_strlcat(dtype, "+SMTP", sizeof(dtype));
DaemonPid = CurrentPid;
}
if (QueueIntvl > 0)
{
(void) sm_strlcat2(dtype,
queuepersistent
? "+persistent-queueing@"
: "+queueing@",
pintvl(QueueIntvl, true),
sizeof(dtype));
}
if (tTd(0, 1))
(void) sm_strlcat(dtype, "+debugging", sizeof(dtype));
sm_syslog(LOG_INFO, NOQID,
"starting daemon (%s): %s", Version, dtype + 1);
#if XLA
xla_create_file();
#endif /* XLA */
/* save daemon type in a macro for possible PidFile use */
macdefine(&BlankEnvelope.e_macro, A_TEMP,
macid("{daemon_info}"), dtype + 1);
/* save queue interval in a macro for possible PidFile use */
macdefine(&MainEnvelope.e_macro, A_TEMP,
macid("{queue_interval}"), pintvl(QueueIntvl, true));
/* workaround: can't seem to release the signal in the parent */
(void) sm_signal(SIGHUP, sighup);
(void) sm_releasesignal(SIGHUP);
(void) sm_signal(SIGTERM, sigterm);
if (QueueIntvl > 0)
{
#if _FFR_RUNPQG
if (qgrp != NOQGRP)
{
int rwgflags = RWG_NONE;
/*
** To run a specific queue group mark it to
** be run, select the work group it's in and
** increment the work counter.
*/
for (i = 0; i < NumQueue && Queue[i] != NULL;
i++)
Queue[i]->qg_nextrun = (time_t) -1;
Queue[qgrp]->qg_nextrun = 0;
if (Verbose)
rwgflags |= RWG_VERBOSE;
if (queuepersistent)
rwgflags |= RWG_PERSISTENT;
rwgflags |= RWG_FORCE;
(void) run_work_group(Queue[qgrp]->qg_wgrp,
rwgflags);
}
else
#endif /* _FFR_RUNPQG */
(void) runqueue(true, false, queuepersistent,
true);
/*
** If queuepersistent but not in daemon mode then
** we're going to do the queue runner monitoring here.
** If in daemon mode then the monitoring will happen
** elsewhere.
*/
if (OpMode != MD_DAEMON && queuepersistent)
{
/*
** Write the pid to file
** XXX Overwrites sendmail.pid
*/
log_sendmail_pid(&MainEnvelope);
/* set the title to make it easier to find */
sm_setproctitle(true, CurEnv, "Queue control");
(void) sm_signal(SIGCHLD, SIG_DFL);
while (CurChildren > 0)
{
int status;
pid_t ret;
int group;
CHECK_RESTART;
errno = 0;
while ((ret = sm_wait(&status)) <= 0)
{
/*
** Waiting for non-existent
** children shouldn't happen.
** Let's get out of here if
** it occurs.
*/
if (errno == ECHILD)
{
CurChildren = 0;
break;
}
continue;
}
/* something is really really wrong */
if (errno == ECHILD)
{
sm_syslog(LOG_ERR, NOQID,
"persistent queue runner control process: lost all children: wait returned ECHILD");
break;
}
if (WIFSTOPPED(status))
continue;
/* Probe only on a child status */
proc_list_drop(ret, status, &group);
if (WIFSIGNALED(status))
{
if (WCOREDUMP(status))
{
sm_syslog(LOG_ERR, NOQID,
"persistent queue runner=%d core dumped, signal=%d",
group, WTERMSIG(status));
/* don't restart this */
mark_work_group_restart(
group, -1);
continue;
}
sm_syslog(LOG_ERR, NOQID,
"persistent queue runner=%d died, pid=%ld, signal=%d",
group, (long) ret,
WTERMSIG(status));
}
/*
** When debugging active, don't
** restart the persistent queues.
** But do log this as info.
*/
if (sm_debug_active(&DebugNoPRestart,
1))
{
sm_syslog(LOG_DEBUG, NOQID,
"persistent queue runner=%d, exited",
group);
mark_work_group_restart(group,
-1);
}
CHECK_RESTART;
}
finis(true, true, ExitStat);
/* NOTREACHED */
}
if (OpMode != MD_DAEMON)
{
char qtype[200];
/*
** Write the pid to file
** XXX Overwrites sendmail.pid
*/
log_sendmail_pid(&MainEnvelope);
/* set the title to make it easier to find */
qtype[0] = '\0';
(void) sm_strlcpyn(qtype, sizeof(qtype), 4,
"Queue runner@",
pintvl(QueueIntvl, true),
" for ",
QueueDir);
sm_setproctitle(true, CurEnv, qtype);
for (;;)
{
(void) pause();
CHECK_RESTART;
if (doqueuerun())
(void) runqueue(true, false,
false, false);
}
}
}
(void) dropenvelope(&MainEnvelope, true, false);
#if STARTTLS
/* init TLS for server, ignore result for now */
(void) initsrvtls(tls_ok);
#endif /* STARTTLS */
nextreq:
p_flags = getrequests(&MainEnvelope);
/* drop privileges */
(void) drop_privileges(false);
/*
** Get authentication data
** Set _ macro in BlankEnvelope before calling newenvelope().
*/
#if _FFR_XCNCT
if (bitnset(D_XCNCT, *p_flags) || bitnset(D_XCNCT_M, *p_flags))
{
/* copied from getauthinfo() */
if (RealHostName == NULL)
{
RealHostName = newstr(hostnamebyanyaddr(&RealHostAddr));
if (strlen(RealHostName) > MAXNAME)
RealHostName[MAXNAME] = '\0'; /* XXX - 1 ? */
}
snprintf(buf, sizeof(buf), "%s [%s]",
RealHostName, anynet_ntoa(&RealHostAddr));
forged = bitnset(D_XCNCT_M, *p_flags);
if (forged)
{
(void) sm_strlcat(buf, " (may be forged)",
sizeof(buf));
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{client_resolve}"), "FORGED");
}
/* HACK! variable used only two times right below */
authinfo = buf;
if (tTd(75, 9))
sm_syslog(LOG_INFO, NOQID,
"main: where=not_calling_getauthinfo, RealHostAddr=%s",
anynet_ntoa(&RealHostAddr));
}
else
/* WARNING: "non-braced" else */
#endif /* _FFR_XCNCT */
authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD,
NULL), &forged);
macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo);
if (tTd(75, 9))
sm_syslog(LOG_INFO, NOQID,
"main: where=after_getauthinfo, RealHostAddr=%s",
anynet_ntoa(&RealHostAddr));
/* at this point we are in a child: reset state */
sm_rpool_free(MainEnvelope.e_rpool);
(void) newenvelope(&MainEnvelope, &MainEnvelope,
sm_rpool_new_x(NULL));
}
if (LogLevel > 9)
{
/* log connection information */
sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo);
}
/*
** If running SMTP protocol, start collecting and executing
** commands. This will never return.
*/
if (OpMode == MD_SMTP || OpMode == MD_DAEMON)
{
char pbuf[20];
/*
** Save some macros for check_* rulesets.
*/
if (forged)
{
char ipbuf[103];
(void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]",
anynet_ntoa(&RealHostAddr));
macdefine(&BlankEnvelope.e_macro, A_TEMP,
macid("{client_name}"), ipbuf);
}
else
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{client_name}"), RealHostName);
macdefine(&BlankEnvelope.e_macro, A_PERM,
macid("{client_ptr}"), RealHostName);
macdefine(&BlankEnvelope.e_macro, A_TEMP,
macid("{client_addr}"), anynet_ntoa(&RealHostAddr));
sm_getla();
switch (RealHostAddr.sa.sa_family)
{
#if NETINET
case AF_INET:
(void) sm_snprintf(pbuf, sizeof(pbuf), "%d",
ntohs(RealHostAddr.sin.sin_port));
break;
#endif /* NETINET */
#if NETINET6
case AF_INET6:
(void) sm_snprintf(pbuf, sizeof(pbuf), "%d",
ntohs(RealHostAddr.sin6.sin6_port));
break;
#endif /* NETINET6 */
default:
(void) sm_snprintf(pbuf, sizeof(pbuf), "0");
break;
}
macdefine(&BlankEnvelope.e_macro, A_TEMP,
macid("{client_port}"), pbuf);
if (OpMode == MD_DAEMON)
{
ENVELOPE *saved_env;
/* validate the connection */
HoldErrs = true;
saved_env = CurEnv;
CurEnv = &BlankEnvelope;
nullserver = validate_connection(&RealHostAddr,
macvalue(macid("{client_name}"),
&BlankEnvelope),
&BlankEnvelope);
if (bitset(EF_DISCARD, BlankEnvelope.e_flags))
MainEnvelope.e_flags |= EF_DISCARD;
CurEnv = saved_env;
HoldErrs = false;
}
else if (p_flags == NULL)
{
p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags));
clrbitmap(p_flags);
}
#if STARTTLS
if (OpMode == MD_SMTP)
(void) initsrvtls(tls_ok);
#endif /* STARTTLS */
/* turn off profiling */
SM_PROF(1);
smtp(nullserver, *p_flags, &MainEnvelope);
if (tTd(93, 100))
{
/* turn off profiling */
SM_PROF(0);
if (OpMode == MD_DAEMON)
goto nextreq;
}
}
sm_rpool_free(MainEnvelope.e_rpool);
clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL));
if (OpMode == MD_VERIFY)
{
set_delivery_mode(SM_VERIFY, &MainEnvelope);
PostMasterCopy = NULL;
}
else
{
/* interactive -- all errors are global */
MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER;
}
/*
** Do basic system initialization and set the sender
*/
initsys(&MainEnvelope);
macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0");
macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0");
setsender(from, &MainEnvelope, NULL, '\0', false);
if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') &&
(!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) ||
strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0))
{
auth_warning(&MainEnvelope, "%s set sender to %s using -%c",
RealUserName, from, warn_f_flag);
#if SASL
auth = false;
#endif /* SASL */
}
if (auth)
{
char *fv;
/* set the initial sender for AUTH= to $f@$j */
fv = macvalue('f', &MainEnvelope);
if (fv == NULL || *fv == '\0')
MainEnvelope.e_auth_param = NULL;
else
{
if (strchr(fv, '@') == NULL)
{
i = strlen(fv) + strlen(macvalue('j',
&MainEnvelope)) + 2;
p = sm_malloc_x(i);
(void) sm_strlcpyn(p, i, 3, fv, "@",
macvalue('j',
&MainEnvelope));
}
else
p = sm_strdup_x(fv);
MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool,
xtextify(p, "="));
sm_free(p); /* XXX */
}
}
if (macvalue('s', &MainEnvelope) == NULL)
macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName);
av = argv + optind;
if (*av == NULL && !GrabTo)
{
MainEnvelope.e_to = NULL;
MainEnvelope.e_flags |= EF_GLOBALERRS;
HoldErrs = false;
SuperSafe = SAFE_NO;
usrerr("Recipient names must be specified");
/* collect body for UUCP return */
if (OpMode != MD_VERIFY)
collect(InChannel, false, NULL, &MainEnvelope, true);
finis(true, true, EX_USAGE);
/* NOTREACHED */
}
/*
** Scan argv and deliver the message to everyone.
*/
save_val = LogUsrErrs;
LogUsrErrs = true;
sendtoargv(av, &MainEnvelope);
LogUsrErrs = save_val;
/* if we have had errors sofar, arrange a meaningful exit stat */
if (Errors > 0 && ExitStat == EX_OK)
ExitStat = EX_USAGE;
#if _FFR_FIX_DASHT
/*
** If using -t, force not sending to argv recipients, even
** if they are mentioned in the headers.
*/
if (GrabTo)
{
ADDRESS *q;
for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next)
q->q_state = QS_REMOVED;
}
#endif /* _FFR_FIX_DASHT */
/*
** Read the input mail.
*/
MainEnvelope.e_to = NULL;
if (OpMode != MD_VERIFY || GrabTo)
{
int savederrors;
unsigned long savedflags;
/*
** workaround for compiler warning on Irix:
** do not initialize variable in the definition, but
** later on:
** warning(1548): transfer of control bypasses
** initialization of:
** variable "savederrors" (declared at line 2570)
** variable "savedflags" (declared at line 2571)
** goto giveup;
*/
savederrors = Errors;
savedflags = MainEnvelope.e_flags & EF_FATALERRS;
MainEnvelope.e_flags |= EF_GLOBALERRS;
MainEnvelope.e_flags &= ~EF_FATALERRS;
Errors = 0;
buffer_errors();
collect(InChannel, false, NULL, &MainEnvelope, true);
/* header checks failed */
if (Errors > 0)
{
giveup:
if (!GrabTo)
{
/* Log who the mail would have gone to */
logundelrcpts(&MainEnvelope,
MainEnvelope.e_message,
8, false);
}
flush_errors(true);
finis(true, true, ExitStat);
/* NOTREACHED */
return -1;
}
/* bail out if message too large */
if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags))
{
finis(true, true, ExitStat != EX_OK ? ExitStat
: EX_DATAERR);
/* NOTREACHED */
return -1;
}
/* set message size */
(void) sm_snprintf(buf, sizeof(buf), "%ld",
PRT_NONNEGL(MainEnvelope.e_msgsize));
macdefine(&MainEnvelope.e_macro, A_TEMP,
macid("{msg_size}"), buf);
Errors = savederrors;
MainEnvelope.e_flags |= savedflags;
}
errno = 0;
if (tTd(1, 1))
sm_dprintf("From person = \"%s\"\n",
MainEnvelope.e_from.q_paddr);
/* Check if quarantining stats should be updated */
if (MainEnvelope.e_quarmsg != NULL)
markstats(&MainEnvelope, NULL, STATS_QUARANTINE);
/*
** Actually send everything.
** If verifying, just ack.
*/
if (Errors == 0)
{
if (!split_by_recipient(&MainEnvelope) &&
bitset(EF_FATALERRS, MainEnvelope.e_flags))
goto giveup;
}
/* make sure we deliver at least the first envelope */
i = FastSplit > 0 ? 0 : -1;
for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++)
{
ENVELOPE *next;
e->e_from.q_state = QS_SENDER;
if (tTd(1, 5))
{
sm_dprintf("main[%d]: QS_SENDER ", i);
printaddr(sm_debug_file(), &e->e_from, false);
}
e->e_to = NULL;
sm_getla();
GrabTo = false;
#if NAMED_BIND
_res.retry = TimeOuts.res_retry[RES_TO_FIRST];
_res.retrans = TimeOuts.res_retrans[RES_TO_FIRST];
#endif /* NAMED_BIND */
next = e->e_sibling;
e->e_sibling = NULL;
/* after FastSplit envelopes: queue up */
sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT);
e->e_sibling = next;
}
/*
** All done.
** Don't send return error message if in VERIFY mode.
*/
finis(true, true, ExitStat);
/* NOTREACHED */
return ExitStat;
}
/*
** STOP_SENDMAIL -- Stop the running program
**
** Parameters:
** none.
**
** Returns:
** none.
**
** Side Effects:
** exits.
*/
void
stop_sendmail()
{
/* reset uid for process accounting */
endpwent();
(void) setuid(RealUid);
exit(EX_OK);
}
/*
** FINIS -- Clean up and exit.
**
** Parameters:
** drop -- whether or not to drop CurEnv envelope
** cleanup -- call exit() or _exit()?
** exitstat -- exit status to use for exit() call
**
** Returns:
** never
**
** Side Effects:
** exits sendmail
*/
void
finis(drop, cleanup, exitstat)
bool drop;
bool cleanup;
volatile int exitstat;
{
char pidpath[MAXPATHLEN];
pid_t pid;
/* Still want to process new timeouts added below */
sm_clear_events();
(void) sm_releasesignal(SIGALRM);
if (tTd(2, 1))
{
sm_dprintf("\n====finis: stat %d e_id=%s e_flags=",
exitstat,
CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id);
printenvflags(CurEnv);
}
if (tTd(2, 9))
printopenfds(false);
SM_TRY
/*
** Clean up. This might raise E:mta.quickabort
*/
/* clean up temp files */
CurEnv->e_to = NULL;
if (drop)
{
if (CurEnv->e_id != NULL)
{
int r;
r = dropenvelope(CurEnv, true, false);
if (exitstat == EX_OK)
exitstat = r;
sm_rpool_free(CurEnv->e_rpool);
CurEnv->e_rpool = NULL;
/* these may have pointed to the rpool */
CurEnv->e_to = NULL;
CurEnv->e_message = NULL;
CurEnv->e_statmsg = NULL;
CurEnv->e_quarmsg = NULL;
CurEnv->e_bodytype = NULL;
CurEnv->e_id = NULL;
CurEnv->e_envid = NULL;
CurEnv->e_auth_param = NULL;
}
else
poststats(StatFile);
}
/* flush any cached connections */
mci_flush(true, NULL);
/* close maps belonging to this pid */
closemaps(false);
#if USERDB
/* close UserDatabase */
_udbx_close();
#endif /* USERDB */
#if SASL
stop_sasl_client();
#endif /* SASL */
#if XLA
/* clean up extended load average stuff */
xla_all_end();
#endif /* XLA */
SM_FINALLY
/*
** And exit.
*/
if (LogLevel > 78)
sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d",
(int) CurrentPid);
if (exitstat == EX_TEMPFAIL ||
CurEnv->e_errormode == EM_BERKNET)
exitstat = EX_OK;
/* XXX clean up queues and related data structures */
cleanup_queues();
pid = getpid();
#if SM_CONF_SHM
cleanup_shm(DaemonPid == pid);
#endif /* SM_CONF_SHM */
/* close locked pid file */
close_sendmail_pid();
if (DaemonPid == pid || PidFilePid == pid)
{
/* blow away the pid file */
expand(PidFile, pidpath, sizeof(pidpath), CurEnv);
(void) unlink(pidpath);
}
/* reset uid for process accounting */
endpwent();
sm_mbdb_terminate();
#if _FFR_MEMSTAT
(void) sm_memstat_close();
#endif /* _FFR_MEMSTAT */
(void) setuid(RealUid);
#if SM_HEAP_CHECK
/* dump the heap, if we are checking for memory leaks */
if (sm_debug_active(&SmHeapCheck, 2))
sm_heap_report(smioout,
sm_debug_level(&SmHeapCheck) - 1);
#endif /* SM_HEAP_CHECK */
if (sm_debug_active(&SmXtrapReport, 1))
sm_dprintf("xtrap count = %d\n", SmXtrapCount);
if (cleanup)
exit(exitstat);
else
_exit(exitstat);
SM_END_TRY
}
/*
** INTINDEBUG -- signal handler for SIGINT in -bt mode
**
** Parameters:
** sig -- incoming signal.
**
** Returns:
** none.
**
** Side Effects:
** longjmps back to test mode loop.
**
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
*/
/* Type of an exception generated on SIGINT during address test mode. */
static const SM_EXC_TYPE_T EtypeInterrupt =
{
SmExcTypeMagic,
"S:mta.interrupt",
"",
sm_etype_printf,
"interrupt",
};
/* ARGSUSED */
static SIGFUNC_DECL
intindebug(sig)
int sig;
{
int save_errno = errno;
FIX_SYSV_SIGNAL(sig, intindebug);
errno = save_errno;
CHECK_CRITICAL(sig);
errno = save_errno;
sm_exc_raisenew_x(&EtypeInterrupt);
errno = save_errno;
return SIGFUNC_RETURN;
}
/*
** SIGTERM -- SIGTERM handler for the daemon
**
** Parameters:
** sig -- signal number.
**
** Returns:
** none.
**
** Side Effects:
** Sets ShutdownRequest which will hopefully trigger
** the daemon to exit.
**
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
*/
/* ARGSUSED */
static SIGFUNC_DECL
sigterm(sig)
int sig;
{
int save_errno = errno;
FIX_SYSV_SIGNAL(sig, sigterm);
ShutdownRequest = "signal";
errno = save_errno;
return SIGFUNC_RETURN;
}
/*
** SIGHUP -- handle a SIGHUP signal
**
** Parameters:
** sig -- incoming signal.
**
** Returns:
** none.
**
** Side Effects:
** Sets RestartRequest which should cause the daemon
** to restart.
**
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
*/
/* ARGSUSED */
static SIGFUNC_DECL
sighup(sig)
int sig;
{
int save_errno = errno;
FIX_SYSV_SIGNAL(sig, sighup);
RestartRequest = "signal";
errno = save_errno;
return SIGFUNC_RETURN;
}
/*
** SIGPIPE -- signal handler for SIGPIPE
**
** Parameters:
** sig -- incoming signal.
**
** Returns:
** none.
**
** Side Effects:
** Sets StopRequest which should cause the mailq/hoststatus
** display to stop.
**
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
*/
/* ARGSUSED */
static SIGFUNC_DECL
sigpipe(sig)
int sig;
{
int save_errno = errno;
FIX_SYSV_SIGNAL(sig, sigpipe);
StopRequest = true;
errno = save_errno;
return SIGFUNC_RETURN;
}
/*
** INTSIG -- clean up on interrupt
**
** This just arranges to exit. It pessimizes in that it
** may resend a message.
**
** Parameters:
** sig -- incoming signal.
**
** Returns:
** none.
**
** Side Effects:
** Unlocks the current job.
**
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
*/
/* ARGSUSED */
SIGFUNC_DECL
intsig(sig)
int sig;
{
bool drop = false;
int save_errno = errno;
FIX_SYSV_SIGNAL(sig, intsig);
errno = save_errno;
CHECK_CRITICAL(sig);
sm_allsignals(true);
IntSig = true;
FileName = NULL;
/* Clean-up on aborted stdin message submission */
if (OpMode == MD_SMTP ||
OpMode == MD_DELIVER ||
OpMode == MD_ARPAFTP)
{
if (CurEnv->e_id != NULL)
{
char *fn;
fn = queuename(CurEnv, DATAFL_LETTER);
if (fn != NULL)
(void) unlink(fn);
fn = queuename(CurEnv, ANYQFL_LETTER);
if (fn != NULL)
(void) unlink(fn);
}
_exit(EX_OK);
/* NOTREACHED */
}
if (sig != 0 && LogLevel > 79)
sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt");
if (OpMode != MD_TEST)
unlockqueue(CurEnv);
finis(drop, false, EX_OK);
/* NOTREACHED */
}
/*
** DISCONNECT -- remove our connection with any foreground process
**
** Parameters:
** droplev -- how "deeply" we should drop the line.
** 0 -- ignore signals, mail back errors, make sure
** output goes to stdout.
** 1 -- also, make stdout go to /dev/null.
** 2 -- also, disconnect from controlling terminal
** (only for daemon mode).
** e -- the current envelope.
**
** Returns:
** none
**
** Side Effects:
** Trys to insure that we are immune to vagaries of
** the controlling tty.
*/
void
disconnect(droplev, e)
int droplev;
register ENVELOPE *e;
{
int fd;
if (tTd(52, 1))
sm_dprintf("disconnect: In %d Out %d, e=%p\n",
sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL),
sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e);
if (tTd(52, 100))
{
sm_dprintf("don't\n");
return;
}
if (LogLevel > 93)
sm_syslog(LOG_DEBUG, e->e_id,
"disconnect level %d",
droplev);
/* be sure we don't get nasty signals */
(void) sm_signal(SIGINT, SIG_IGN);
(void) sm_signal(SIGQUIT, SIG_IGN);
/* we can't communicate with our caller, so.... */
HoldErrs = true;
CurEnv->e_errormode = EM_MAIL;
Verbose = 0;
DisConnected = true;
/* all input from /dev/null */
if (InChannel != smioin)
{
(void) sm_io_close(InChannel, SM_TIME_DEFAULT);
InChannel = smioin;
}
if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL,
SM_IO_RDONLY, NULL, smioin) == NULL)
sm_syslog(LOG_ERR, e->e_id,
"disconnect: sm_io_reopen(\"%s\") failed: %s",
SM_PATH_DEVNULL, sm_errstring(errno));
/*
** output to the transcript
** We also compare the fd numbers here since OutChannel
** might be a layer on top of smioout due to encryption
** (see sfsasl.c).
*/
if (OutChannel != smioout &&
sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) !=
sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL))
{
(void) sm_io_close(OutChannel, SM_TIME_DEFAULT);
OutChannel = smioout;
#if 0
/*
** Has smioout been closed? Reopen it.
** This shouldn't happen anymore, the code is here
** just as a reminder.
*/
if (smioout->sm_magic == NULL &&
sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL,
SM_IO_WRONLY, NULL, smioout) == NULL)
sm_syslog(LOG_ERR, e->e_id,
"disconnect: sm_io_reopen(\"%s\") failed: %s",
SM_PATH_DEVNULL, sm_errstring(errno));
#endif /* 0 */
}
if (droplev > 0)
{
fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666);
if (fd == -1)
{
sm_syslog(LOG_ERR, e->e_id,
"disconnect: open(\"%s\") failed: %s",
SM_PATH_DEVNULL, sm_errstring(errno));
}
(void) sm_io_flush(smioout, SM_TIME_DEFAULT);
if (fd >= 0)
{
(void) dup2(fd, STDOUT_FILENO);
(void) dup2(fd, STDERR_FILENO);
(void) close(fd);
}
}
/* drop our controlling TTY completely if possible */
if (droplev > 1)
{
(void) setsid();
errno = 0;
}
#if XDEBUG
checkfd012("disconnect");
#endif /* XDEBUG */
if (LogLevel > 71)
sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d",
(int) CurrentPid);
errno = 0;
}
static void
obsolete(argv)
char *argv[];
{
register char *ap;
register char *op;
while ((ap = *++argv) != NULL)
{
/* Return if "--" or not an option of any form. */
if (ap[0] != '-' || ap[1] == '-')
return;
/* Don't allow users to use "-Q." or "-Q ." */
if ((ap[1] == 'Q' && ap[2] == '.') ||
(ap[1] == 'Q' && argv[1] != NULL &&
argv[1][0] == '.' && argv[1][1] == '\0'))
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Can not use -Q.\n");
exit(EX_USAGE);
}
/* skip over options that do have a value */
op = strchr(OPTIONS, ap[1]);
if (op != NULL && *++op == ':' && ap[2] == '\0' &&
ap[1] != 'd' &&
#if defined(sony_news)
ap[1] != 'E' && ap[1] != 'J' &&
#endif /* defined(sony_news) */
argv[1] != NULL && argv[1][0] != '-')
{
argv++;
continue;
}
/* If -C doesn't have an argument, use sendmail.cf. */
#define __DEFPATH "sendmail.cf"
if (ap[1] == 'C' && ap[2] == '\0')
{
*argv = xalloc(sizeof(__DEFPATH) + 2);
(void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2,
"-C", __DEFPATH);
}
/* If -q doesn't have an argument, run it once. */
if (ap[1] == 'q' && ap[2] == '\0')
*argv = "-q0";
/* If -Q doesn't have an argument, disable quarantining */
if (ap[1] == 'Q' && ap[2] == '\0')
*argv = "-Q.";
/* if -d doesn't have an argument, use 0-99.1 */
if (ap[1] == 'd' && ap[2] == '\0')
*argv = "-d0-99.1";
#if defined(sony_news)
/* if -E doesn't have an argument, use -EC */
if (ap[1] == 'E' && ap[2] == '\0')
*argv = "-EC";
/* if -J doesn't have an argument, use -JJ */
if (ap[1] == 'J' && ap[2] == '\0')
*argv = "-JJ";
#endif /* defined(sony_news) */
}
}
/*
** AUTH_WARNING -- specify authorization warning
**
** Parameters:
** e -- the current envelope.
** msg -- the text of the message.
** args -- arguments to the message.
**
** Returns:
** none.
*/
void
#ifdef __STDC__
auth_warning(register ENVELOPE *e, const char *msg, ...)
#else /* __STDC__ */
auth_warning(e, msg, va_alist)
register ENVELOPE *e;
const char *msg;
va_dcl
#endif /* __STDC__ */
{
char buf[MAXLINE];
SM_VA_LOCAL_DECL
if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags))
{
register char *p;
static char hostbuf[48];
if (hostbuf[0] == '\0')
{
struct hostent *hp;
hp = myhostname(hostbuf, sizeof(hostbuf));
#if NETINET6
if (hp != NULL)
{
freehostent(hp);
hp = NULL;
}
#endif /* NETINET6 */
}
(void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": ");
p = &buf[strlen(buf)];
SM_VA_START(ap, msg);
(void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap);
SM_VA_END(ap);
addheader("X-Authentication-Warning", buf, 0, e, true);
if (LogLevel > 3)
sm_syslog(LOG_INFO, e->e_id,
"Authentication-Warning: %.400s",
buf);
}
}
/*
** GETEXTENV -- get from external environment
**
** Parameters:
** envar -- the name of the variable to retrieve
**
** Returns:
** The value, if any.
*/
static char *
getextenv(envar)
const char *envar;
{
char **envp;
int l;
l = strlen(envar);
for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++)
{
if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=')
return &(*envp)[l + 1];
}
return NULL;
}
/*
** SM_SETUSERENV -- set an environment variable in the propagated environment
**
** Parameters:
** envar -- the name of the environment variable.
** value -- the value to which it should be set. If
** null, this is extracted from the incoming
** environment. If that is not set, the call
** to sm_setuserenv is ignored.
**
** Returns:
** none.
*/
void
sm_setuserenv(envar, value)
const char *envar;
const char *value;
{
int i, l;
char **evp = UserEnviron;
char *p;
if (value == NULL)
{
value = getextenv(envar);
if (value == NULL)
return;
}
/* XXX enforce reasonable size? */
i = strlen(envar) + 1;
l = strlen(value) + i + 1;
p = (char *) xalloc(l);
(void) sm_strlcpyn(p, l, 3, envar, "=", value);
while (*evp != NULL && strncmp(*evp, p, i) != 0)
evp++;
if (*evp != NULL)
{
*evp++ = p;
}
else if (evp < &UserEnviron[MAXUSERENVIRON])
{
*evp++ = p;
*evp = NULL;
}
/* make sure it is in our environment as well */
if (putenv(p) < 0)
syserr("sm_setuserenv: putenv(%s) failed", p);
}
/*
** DUMPSTATE -- dump state
**
** For debugging.
*/
void
dumpstate(when)
char *when;
{
register char *j = macvalue('j', CurEnv);
int rs;
extern int NextMacroId;
sm_syslog(LOG_DEBUG, CurEnv->e_id,
"--- dumping state on %s: $j = %s ---",
when,
j == NULL ? "<NULL>" : j);
if (j != NULL)
{
if (!wordinclass(j, 'w'))
sm_syslog(LOG_DEBUG, CurEnv->e_id,
"*** $j not in $=w ***");
}
sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren);
sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)",
NextMacroId, MAXMACROID);
sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---");
printopenfds(true);
sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---");
mci_dump_all(smioout, true);
rs = strtorwset("debug_dumpstate", NULL, ST_FIND);
if (rs > 0)
{
int status;
register char **pvp;
char *pv[MAXATOM + 1];
pv[0] = NULL;
status = REWRITE(pv, rs, CurEnv);
sm_syslog(LOG_DEBUG, CurEnv->e_id,
"--- ruleset debug_dumpstate returns stat %d, pv: ---",
status);
for (pvp = pv; *pvp != NULL; pvp++)
sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp);
}
sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---");
}
#ifdef SIGUSR1
/*
** SIGUSR1 -- Signal a request to dump state.
**
** Parameters:
** sig -- calling signal.
**
** Returns:
** none.
**
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
**
** XXX: More work is needed for this signal handler.
*/
/* ARGSUSED */
static SIGFUNC_DECL
sigusr1(sig)
int sig;
{
int save_errno = errno;
FIX_SYSV_SIGNAL(sig, sigusr1);
errno = save_errno;
CHECK_CRITICAL(sig);
dumpstate("user signal");
# if SM_HEAP_CHECK
dumpstab();
# endif /* SM_HEAP_CHECK */
errno = save_errno;
return SIGFUNC_RETURN;
}
#endif /* SIGUSR1 */
/*
** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option
**
** Parameters:
** to_real_uid -- if set, drop to the real uid instead
** of the RunAsUser.
**
** Returns:
** EX_OSERR if the setuid failed.
** EX_OK otherwise.
*/
int
drop_privileges(to_real_uid)
bool to_real_uid;
{
int rval = EX_OK;
GIDSET_T emptygidset[1];
if (tTd(47, 1))
sm_dprintf("drop_privileges(%d): Real[UG]id=%ld:%ld, get[ug]id=%ld:%ld, gete[ug]id=%ld:%ld, RunAs[UG]id=%ld:%ld\n",
(int) to_real_uid,
(long) RealUid, (long) RealGid,
(long) getuid(), (long) getgid(),
(long) geteuid(), (long) getegid(),
(long) RunAsUid, (long) RunAsGid);
if (to_real_uid)
{
RunAsUserName = RealUserName;
RunAsUid = RealUid;
RunAsGid = RealGid;
EffGid = RunAsGid;
}
/* make sure no one can grab open descriptors for secret files */
endpwent();
sm_mbdb_terminate();
/* reset group permissions; these can be set later */
emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid();
/*
** Notice: on some OS (Linux...) the setgroups() call causes
** a logfile entry if sendmail is not run by root.
** However, it is unclear (no POSIX standard) whether
** setgroups() can only succeed if executed by root.
** So for now we keep it as it is; if you want to change it, use
** if (geteuid() == 0 && setgroups(1, emptygidset) == -1)
*/
if (setgroups(1, emptygidset) == -1 && geteuid() == 0)
{
syserr("drop_privileges: setgroups(1, %d) failed",
(int) emptygidset[0]);
rval = EX_OSERR;
}
/* reset primary group id */
if (to_real_uid)
{
/*
** Drop gid to real gid.
** On some OS we must reset the effective[/real[/saved]] gid,
** and then use setgid() to finally drop all group privileges.
** Later on we check whether we can get back the
** effective gid.
*/
#if HASSETEGID
if (setegid(RunAsGid) < 0)
{
syserr("drop_privileges: setegid(%d) failed",
(int) RunAsGid);
rval = EX_OSERR;
}
#else /* HASSETEGID */
# if HASSETREGID
if (setregid(RunAsGid, RunAsGid) < 0)
{
syserr("drop_privileges: setregid(%d, %d) failed",
(int) RunAsGid, (int) RunAsGid);
rval = EX_OSERR;
}
# else /* HASSETREGID */
# if HASSETRESGID
if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0)
{
syserr("drop_privileges: setresgid(%d, %d, %d) failed",
(int) RunAsGid, (int) RunAsGid, (int) RunAsGid);
rval = EX_OSERR;
}
# endif /* HASSETRESGID */
# endif /* HASSETREGID */
#endif /* HASSETEGID */
}
if (rval == EX_OK && (to_real_uid || RunAsGid != 0))
{
if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid))
{
syserr("drop_privileges: setgid(%ld) failed",
(long) RunAsGid);
rval = EX_OSERR;
}
errno = 0;
if (rval == EX_OK && getegid() != RunAsGid)
{
syserr("drop_privileges: Unable to set effective gid=%ld to RunAsGid=%ld",
(long) getegid(), (long) RunAsGid);
rval = EX_OSERR;
}
}
/* fiddle with uid */
if (to_real_uid || RunAsUid != 0)
{
uid_t euid;
/*
** Try to setuid(RunAsUid).
** euid must be RunAsUid,
** ruid must be RunAsUid unless (e|r)uid wasn't 0
** and we didn't have to drop privileges to the real uid.
*/
if (setuid(RunAsUid) < 0 ||
geteuid() != RunAsUid ||
(getuid() != RunAsUid &&
(to_real_uid || geteuid() == 0 || getuid() == 0)))
{
#if HASSETREUID
/*
** if ruid != RunAsUid, euid == RunAsUid, then
** try resetting just the real uid, then using
** setuid() to drop the saved-uid as well.
*/
if (geteuid() == RunAsUid)
{
if (setreuid(RunAsUid, -1) < 0)
{
syserr("drop_privileges: setreuid(%d, -1) failed",
(int) RunAsUid);
rval = EX_OSERR;
}
if (setuid(RunAsUid) < 0)
{
syserr("drop_privileges: second setuid(%d) attempt failed",
(int) RunAsUid);
rval = EX_OSERR;
}
}
else
#endif /* HASSETREUID */
{
syserr("drop_privileges: setuid(%d) failed",
(int) RunAsUid);
rval = EX_OSERR;
}
}
euid = geteuid();
if (RunAsUid != 0 && setuid(0) == 0)
{
/*
** Believe it or not, the Linux capability model
** allows a non-root process to override setuid()
** on a process running as root and prevent that
** process from dropping privileges.
*/
syserr("drop_privileges: setuid(0) succeeded (when it should not)");
rval = EX_OSERR;
}
else if (RunAsUid != euid && setuid(euid) == 0)
{
/*
** Some operating systems will keep the saved-uid
** if a non-root effective-uid calls setuid(real-uid)
** making it possible to set it back again later.
*/
syserr("drop_privileges: Unable to drop non-root set-user-ID privileges");
rval = EX_OSERR;
}
}
if ((to_real_uid || RunAsGid != 0) &&
rval == EX_OK && RunAsGid != EffGid &&
getuid() != 0 && geteuid() != 0)
{
errno = 0;
if (setgid(EffGid) == 0)
{
syserr("drop_privileges: setgid(%d) succeeded (when it should not)",
(int) EffGid);
rval = EX_OSERR;
}
}
if (tTd(47, 5))
{
sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n",
(int) geteuid(), (int) getuid(),
(int) getegid(), (int) getgid());
sm_dprintf("drop_privileges: RunAsUser = %d:%d\n",
(int) RunAsUid, (int) RunAsGid);
if (tTd(47, 10))
sm_dprintf("drop_privileges: rval = %d\n", rval);
}
return rval;
}
/*
** FILL_FD -- make sure a file descriptor has been properly allocated
**
** Used to make sure that stdin/out/err are allocated on startup
**
** Parameters:
** fd -- the file descriptor to be filled.
** where -- a string used for logging. If NULL, this is
** being called on startup, and logging should
** not be done.
**
** Returns:
** none
**
** Side Effects:
** possibly changes MissingFds
*/
void
fill_fd(fd, where)
int fd;
char *where;
{
int i;
struct stat stbuf;
if (fstat(fd, &stbuf) >= 0 || errno != EBADF)
return;
if (where != NULL)
syserr("fill_fd: %s: fd %d not open", where, fd);
else
MissingFds |= 1 << fd;
i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666);
if (i < 0)
{
syserr("!fill_fd: %s: cannot open %s",
where == NULL ? "startup" : where, SM_PATH_DEVNULL);
}
if (fd != i)
{
(void) dup2(i, fd);
(void) close(i);
}
}
/*
** SM_PRINTOPTIONS -- print options
**
** Parameters:
** options -- array of options.
**
** Returns:
** none.
*/
static void
sm_printoptions(options)
char **options;
{
int ll;
char **av;
av = options;
ll = 7;
while (*av != NULL)
{
if (ll + strlen(*av) > 63)
{
sm_dprintf("\n");
ll = 0;
}
if (ll == 0)
sm_dprintf("\t\t");
else
sm_dprintf(" ");
sm_dprintf("%s", *av);
ll += strlen(*av++) + 1;
}
sm_dprintf("\n");
}
/*
** TO8BIT -- convert \octal sequences in a test mode input line
**
** Parameters:
** str -- the input line.
**
** Returns:
** none.
**
** Side Effects:
** replaces \0octal in str with octal value.
*/
static bool to8bit __P((char *));
static bool
to8bit(str)
char *str;
{
int c, len;
char *out, *in;
bool changed;
if (str == NULL)
return false;
in = out = str;
changed = false;
len = 0;
while ((c = (*str++ & 0377)) != '\0')
{
int oct, nxtc;
++len;
if (c == '\\' &&
(nxtc = (*str & 0377)) == '0')
{
oct = 0;
while ((nxtc = (*str & 0377)) != '\0' &&
isascii(nxtc) && isdigit(nxtc))
{
oct <<= 3;
oct += nxtc - '0';
++str;
++len;
}
changed = true;
c = oct;
}
*out++ = c;
}
*out++ = c;
if (changed)
{
char *q;
q = quote_internal_chars(in, in, &len);
if (q != in)
sm_strlcpy(in, q, len);
}
return changed;
}
/*
** TESTMODELINE -- process a test mode input line
**
** Parameters:
** line -- the input line.
** e -- the current environment.
** Syntax:
** # a comment
** .X process X as a configuration line
** =X dump a configuration item (such as mailers)
** $X dump a macro or class
** /X try an activity
** X normal process through rule set X
*/
static void
testmodeline(line, e)
char *line;
ENVELOPE *e;
{
register char *p;
char *q;
auto char *delimptr;
int mid;
int i, rs;
STAB *map;
char **s;
struct rewrite *rw;
ADDRESS a;
char *lbp;
auto int lbs;
static int tryflags = RF_COPYNONE;
char exbuf[MAXLINE];
char lbuf[MAXLINE];
extern unsigned char TokTypeNoC[];
bool eightbit;
/* skip leading spaces */
while (*line == ' ')
line++;
lbp = NULL;
eightbit = false;
switch (line[0])
{
case '#':
case '\0':
return;
case '?':
help("-bt", e);
return;
case '.': /* config-style settings */
switch (line[1])
{
case 'D':
mid = macid_parse(&line[2], &delimptr);
if (mid == 0)
return;
lbs = sizeof(lbuf);
lbp = translate_dollars(delimptr, lbuf, &lbs);
macdefine(&e->e_macro, A_TEMP, mid, lbp);
if (lbp != lbuf)
SM_FREE(lbp);
break;
case 'C':
if (line[2] == '\0') /* not to call syserr() */
return;
mid = macid_parse(&line[2], &delimptr);
if (mid == 0)
return;
lbs = sizeof(lbuf);
lbp = translate_dollars(delimptr, lbuf, &lbs);
expand(lbp, exbuf, sizeof(exbuf), e);
if (lbp != lbuf)
SM_FREE(lbp);
p = exbuf;
while (*p != '\0')
{
register char *wd;
char delim;
while (*p != '\0' && isascii(*p) && isspace(*p))
p++;
wd = p;
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
delim = *p;
*p = '\0';
if (wd[0] != '\0')
setclass(mid, wd);
*p = delim;
}
break;
case '\0':
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: .[DC]macro value(s)\n");
break;
default:
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Unknown \".\" command %s\n", line);
break;
}
return;
case '=': /* config-style settings */
switch (line[1])
{
case 'S': /* dump rule set */
rs = strtorwset(&line[2], NULL, ST_FIND);
if (rs < 0)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Undefined ruleset %s\n", &line[2]);
return;
}
rw = RewriteRules[rs];
if (rw == NULL)
return;
do
{
(void) sm_io_putc(smioout, SM_TIME_DEFAULT,
'R');
s = rw->r_lhs;
while (*s != NULL)
{
xputs(smioout, *s++);
(void) sm_io_putc(smioout,
SM_TIME_DEFAULT, ' ');
}
(void) sm_io_putc(smioout, SM_TIME_DEFAULT,
'\t');
(void) sm_io_putc(smioout, SM_TIME_DEFAULT,
'\t');
s = rw->r_rhs;
while (*s != NULL)
{
xputs(smioout, *s++);
(void) sm_io_putc(smioout,
SM_TIME_DEFAULT, ' ');
}
(void) sm_io_putc(smioout, SM_TIME_DEFAULT,
'\n');
} while ((rw = rw->r_next) != NULL);
break;
case 'M':
for (i = 0; i < MAXMAILERS; i++)
{
if (Mailer[i] != NULL)
printmailer(smioout, Mailer[i]);
}
break;
case '\0':
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: =Sruleset or =M\n");
break;
default:
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Unknown \"=\" command %s\n", line);
break;
}
return;
case '-': /* set command-line-like opts */
switch (line[1])
{
case 'd':
tTflag(&line[2]);
break;
case '\0':
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: -d{debug arguments}\n");
break;
default:
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Unknown \"-\" command %s\n", line);
break;
}
return;
case '$':
if (line[1] == '=')
{
mid = macid(&line[2]);
if (mid != 0)
stabapply(dump_class, mid);
return;
}
mid = macid(&line[1]);
if (mid == 0)
return;
p = macvalue(mid, e);
if (p == NULL)
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Undefined\n");
else
{
xputs(smioout, p);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"\n");
}
return;
case '/': /* miscellaneous commands */
p = &line[strlen(line)];
while (--p >= line && isascii(*p) && isspace(*p))
*p = '\0';
p = strpbrk(line, " \t");
if (p != NULL)
{
while (isascii(*p) && isspace(*p))
*p++ = '\0';
}
else
p = "";
if (line[1] == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: /[canon|map|mx|parse|try|tryflags]\n");
return;
}
if (sm_strcasecmp(&line[1], "quit") == 0)
{
CurEnv->e_id = NULL;
finis(true, true, ExitStat);
/* NOTREACHED */
}
if (sm_strcasecmp(&line[1], "mx") == 0)
{
#if NAMED_BIND
/* look up MX records */
int nmx;
auto int rcode;
char *mxhosts[MAXMXHOSTS + 1];
if (*p == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: /mx address\n");
return;
}
nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true,
NULL);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"getmxrr(%s) returns %d value(s):\n",
p, nmx);
for (i = 0; i < nmx; i++)
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"\t%s\n", mxhosts[i]);
#else /* NAMED_BIND */
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"No MX code compiled in\n");
#endif /* NAMED_BIND */
}
else if (sm_strcasecmp(&line[1], "canon") == 0)
{
char host[MAXHOSTNAMELEN];
if (*p == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: /canon address\n");
return;
}
else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host))
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Name too long\n");
return;
}
(void) getcanonname(host, sizeof(host), !HasWildcardMX,
NULL);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"getcanonname(%s) returns %s\n",
p, host);
}
else if (sm_strcasecmp(&line[1], "map") == 0)
{
auto int rcode = EX_OK;
char *av[2];
if (*p == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: /map mapname key\n");
return;
}
for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++)
continue;
if (*q == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"No key specified\n");
return;
}
*q++ = '\0';
map = stab(p, ST_MAP, ST_FIND);
if (map == NULL)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Map named \"%s\" not found\n", p);
return;
}
if (!bitset(MF_OPEN, map->s_map.map_mflags) &&
!openmap(&(map->s_map)))
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Map named \"%s\" not open\n", p);
return;
}
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"map_lookup: %s (%s) ", p, q);
av[0] = q;
av[1] = NULL;
p = (*map->s_map.map_class->map_lookup)
(&map->s_map, q, av, &rcode);
if (p == NULL)
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"no match (%d)\n",
rcode);
else
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"returns %s (%d)\n", p,
rcode);
}
else if (sm_strcasecmp(&line[1], "try") == 0)
{
MAILER *m;
STAB *st;
auto int rcode = EX_OK;
q = strpbrk(p, " \t");
if (q != NULL)
{
while (isascii(*q) && isspace(*q))
*q++ = '\0';
}
if (q == NULL || *q == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: /try mailer address\n");
return;
}
st = stab(p, ST_MAILER, ST_FIND);
if (st == NULL)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Unknown mailer %s\n", p);
return;
}
m = st->s_mailer;
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Trying %s %s address %s for mailer %s\n",
bitset(RF_HEADERADDR, tryflags) ? "header"
: "envelope",
bitset(RF_SENDERADDR, tryflags) ? "sender"
: "recipient", q, p);
p = remotename(q, m, tryflags, &rcode, CurEnv);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Rcode = %d, addr = %s\n",
rcode, p == NULL ? "<NULL>" : p);
e->e_to = NULL;
}
else if (sm_strcasecmp(&line[1], "tryflags") == 0)
{
if (*p == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: /tryflags [Hh|Ee][Ss|Rr]\n");
return;
}
for (; *p != '\0'; p++)
{
switch (*p)
{
case 'H':
case 'h':
tryflags |= RF_HEADERADDR;
break;
case 'E':
case 'e':
tryflags &= ~RF_HEADERADDR;
break;
case 'S':
case 's':
tryflags |= RF_SENDERADDR;
break;
case 'R':
case 'r':
tryflags &= ~RF_SENDERADDR;
break;
}
}
exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e';
exbuf[1] = ' ';
exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r';
exbuf[3] = '\0';
macdefine(&e->e_macro, A_TEMP,
macid("{addr_type}"), exbuf);
}
else if (sm_strcasecmp(&line[1], "parse") == 0)
{
if (*p == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Usage: /parse address\n");
return;
}
q = crackaddr(p, e);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Cracked address = ");
xputs(smioout, q);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"\nParsing %s %s address\n",
bitset(RF_HEADERADDR, tryflags) ?
"header" : "envelope",
bitset(RF_SENDERADDR, tryflags) ?
"sender" : "recipient");
if (parseaddr(p, &a, tryflags, '\0', NULL, e, true)
== NULL)
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Cannot parse\n");
else if (a.q_host != NULL && a.q_host[0] != '\0')
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"mailer %s, host %s, user %s\n",
a.q_mailer->m_name,
a.q_host,
a.q_user);
else
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"mailer %s, user %s\n",
a.q_mailer->m_name,
a.q_user);
e->e_to = NULL;
}
else if (sm_strcasecmp(&line[1], "header") == 0)
{
unsigned long ul;
ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"ul = %lu\n", ul);
}
#if NETINET || NETINET6
else if (sm_strcasecmp(&line[1], "gethostbyname") == 0)
{
int family = AF_INET;
q = strpbrk(p, " \t");
if (q != NULL)
{
while (isascii(*q) && isspace(*q))
*q++ = '\0';
# if NETINET6
if (*q != '\0' && (strcmp(q, "inet6") == 0 ||
strcmp(q, "AAAA") == 0))
family = AF_INET6;
# endif /* NETINET6 */
}
(void) sm_gethostbyname(p, family);
}
#endif /* NETINET || NETINET6 */
else
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Unknown \"/\" command %s\n",
line);
}
(void) sm_io_flush(smioout, SM_TIME_DEFAULT);
return;
}
for (p = line; isascii(*p) && isspace(*p); p++)
continue;
q = p;
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
if (*p == '\0')
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"No address!\n");
return;
}
*p = '\0';
if (tTd(23, 101))
eightbit = to8bit(p + 1);
if (invalidaddr(p + 1, NULL, true))
return;
do
{
register char **pvp;
char pvpbuf[PSBUFSIZE];
pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr,
ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false);
if (pvp == NULL)
continue;
p = q;
while (*p != '\0')
{
int status;
rs = strtorwset(p, NULL, ST_FIND);
if (rs < 0)
{
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"Undefined ruleset %s\n",
p);
break;
}
status = REWRITE(pvp, rs, e);
if (status != EX_OK)
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"== Ruleset %s (%d) status %d\n",
p, rs, status);
else if (eightbit)
{
cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0',
true);
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"cataddr: %s\n",
str2prt(exbuf));
}
while (*p != '\0' && *p++ != ',')
continue;
}
} while (*(p = delimptr) != '\0');
(void) sm_io_flush(smioout, SM_TIME_DEFAULT);
}
static void
dump_class(s, id)
register STAB *s;
int id;
{
if (s->s_symtype != ST_CLASS)
return;
if (bitnset(bitidx(id), s->s_class))
(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
"%s\n", s->s_name);
}
/*
** An exception type used to create QuickAbort exceptions.
** This is my first cut at converting QuickAbort from longjmp to exceptions.
** These exceptions have a single integer argument, which is the argument
** to longjmp in the original code (either 1 or 2). I don't know the
** significance of 1 vs 2: the calls to setjmp don't care.
*/
const SM_EXC_TYPE_T EtypeQuickAbort =
{
SmExcTypeMagic,
"E:mta.quickabort",
"i",
sm_etype_printf,
"quick abort %0",
};
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