/
main.c
2572 lines (2270 loc) · 55 KB
/
main.c
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/*
* Copyright (c) 1983, 1995-1997 Eric P. Allman
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1988, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)main.c 8.258 (Berkeley) 10/20/97";
#endif /* not lint */
#define _DEFINE
#include "sendmail.h"
#include <arpa/inet.h>
#if NAMED_BIND
#include <resolv.h>
#endif
/*
** 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/sendmail.cf
** (read by readcf.c).
**
** Usage:
** /usr/lib/sendmail [flags] addr ...
**
** See the associated documentation for details.
**
** Author:
** 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).
** The support of the my employers is gratefully acknowledged.
** Few of them (Britton-Lee in particular) have had
** anything to gain from my involvement in this project.
*/
int NextMailer; /* "free" index into Mailer struct */
char *FullName; /* sender's full name */
ENVELOPE BlankEnvelope; /* a "blank" envelope */
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 */
char **SaveArgv; /* argument vector for re-execing */
int MissingFds = 0; /* bit map of fds missing on startup */
#ifdef NGROUPS_MAX
GIDSET_T InitialGidSet[NGROUPS_MAX];
#endif
static void obsolete();
extern void printmailer __P((MAILER *));
extern void tTflag __P((char *));
#if DAEMON && !SMTP
ERROR %%%% Cannot have DAEMON mode without SMTP %%%% ERROR
#endif /* DAEMON && !SMTP */
#if SMTP && !QUEUE
ERROR %%%% Cannot have SMTP mode without QUEUE %%%% ERROR
#endif /* DAEMON && !SMTP */
#define MAXCONFIGLEVEL 7 /* highest config version level known */
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;
bool queuemode = FALSE; /* process queue requests */
bool safecf = TRUE;
bool warn_C_flag = FALSE;
char warn_f_flag = '\0';
bool run_in_foreground = FALSE; /* -bD mode */
static bool reenter = FALSE;
struct passwd *pw;
struct hostent *hp;
bool nullserver = FALSE;
char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */
static char rnamebuf[MAXNAME]; /* holds RealUserName */
char *emptyenviron[1];
extern int DtableSize;
extern int optind;
extern int opterr;
extern char *optarg;
extern char **environ;
extern time_t convtime();
extern SIGFUNC_DECL intsig __P((int));
extern struct hostent *myhostname();
extern char *getauthinfo();
extern char *getcfname();
extern SIGFUNC_DECL sigusr1 __P((int));
extern SIGFUNC_DECL sighup __P((int));
extern void initmacros __P((ENVELOPE *));
extern void init_md __P((int, char **));
extern int getdtsize __P((void));
extern void tTsetup __P((u_char *, int, char *));
extern void setdefaults __P((ENVELOPE *));
extern void initsetproctitle __P((int, char **, char **));
extern void init_vendor_macros __P((ENVELOPE *));
extern void load_if_names __P((void));
extern void vendor_pre_defaults __P((ENVELOPE *));
extern void vendor_post_defaults __P((ENVELOPE *));
extern void readcf __P((char *, bool, ENVELOPE *));
extern void printqueue __P((void));
extern void sendtoargv __P((char **, ENVELOPE *));
extern void resetlimits __P((void));
/*
** Check to see if we reentered.
** This would normally happen if e_putheader or e_putbody
** were NULL when invoked.
*/
if (reenter)
{
syserr("main: reentered!");
abort();
}
reenter = TRUE;
/* avoid null pointer dereferences */
TermEscape.te_rv_on = TermEscape.te_rv_off = "";
/* do machine-dependent initializations */
init_md(argc, argv);
/* 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.
*/
fill_fd(STDIN_FILENO, NULL);
fill_fd(STDOUT_FILENO, NULL);
fill_fd(STDERR_FILENO, NULL);
i = DtableSize;
while (--i > 0)
{
if (i != STDIN_FILENO && i != STDOUT_FILENO && i != STDERR_FILENO)
(void) close(i);
}
errno = 0;
#if LOG
# ifdef LOG_MAIL
openlog("sendmail", LOG_PID, LOG_MAIL);
# else
openlog("sendmail", LOG_PID);
# endif
#endif
if (MissingFds != 0)
{
char mbuf[MAXLINE];
mbuf[0] = '\0';
if (bitset(1 << STDIN_FILENO, MissingFds))
strcat(mbuf, ", stdin");
if (bitset(1 << STDOUT_FILENO, MissingFds))
strcat(mbuf, ", stdout");
if (bitset(1 << STDERR_FILENO, MissingFds))
strcat(mbuf, ", stderr");
syserr("File descriptors missing on startup: %s", &mbuf[2]);
}
/* reset status from syserr() calls for missing file descriptors */
Errors = 0;
ExitStat = EX_OK;
#if XDEBUG
checkfd012("after openlog");
#endif
tTsetup(tTdvect, sizeof tTdvect, "0-99.1");
#ifdef NGROUPS_MAX
/* save initial group set for future checks */
i = getgroups(NGROUPS_MAX, InitialGidSet);
if (i == 0)
InitialGidSet[0] = (GID_T) -1;
while (i < NGROUPS_MAX)
InitialGidSet[i++] = InitialGidSet[0];
#endif
/* drop group id privileges (RunAsUser not yet set) */
(void) drop_privileges(FALSE);
#ifdef SIGUSR1
/* arrange to dump state on user-1 signal */
setsignal(SIGUSR1, sigusr1);
#endif
/* Handle any non-getoptable constructions. */
obsolete(argv);
/*
** Do a quick prescan of the argument list.
*/
#if defined(__osf__) || defined(_AIX3)
# define OPTIONS "B:b:C:cd:e:F:f:h:IiM:mN:nO:o:p:q:R:r:sTtUV:vX:x"
#endif
#if defined(sony_news)
# define OPTIONS "B:b:C:cd:E:e:F:f:h:IiJ:M:mN:nO:o:p:q:R:r:sTtUV:vX:"
#endif
#ifndef OPTIONS
# define OPTIONS "B:b:C:cd:e:F:f:h:IiM:mN:nO:o:p:q:R:r:sTtUV:vX:"
#endif
opterr = 0;
while ((j = getopt(argc, argv, OPTIONS)) != -1)
{
switch (j)
{
case 'd':
/* hack attack -- see if should use ANSI mode */
if (strcmp(optarg, "ANSI") == 0)
{
TermEscape.te_rv_on = "\033[7m";
TermEscape.te_rv_off = "\033[0m";
break;
}
tTflag(optarg);
setbuf(stdout, (char *) NULL);
break;
}
}
opterr = 1;
/* 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);
RealUid = getuid();
RealGid = getgid();
pw = sm_getpwuid(RealUid);
if (pw != NULL)
(void) snprintf(rnamebuf, sizeof rnamebuf, "%s", pw->pw_name);
else
(void) snprintf(rnamebuf, sizeof rnamebuf, "Unknown UID %d", RealUid);
RealUserName = rnamebuf;
/* if running non-setuid binary, pretend we are the RunAsUid */
if (geteuid() == RealUid)
{
if (tTd(47, 1))
printf("Non-setuid binary: RunAsUid = RealUid = %d\n",
RealUid);
RunAsUid = RealUid;
}
if (getegid() == RealGid)
RunAsGid = RealGid;
/* save command line arguments */
i = 0;
for (av = argv; *av != NULL; )
i += strlen(*av++) + 1;
SaveArgv = (char **) xalloc(sizeof (char *) * (argc + 1));
CommandLineArgs = xalloc(i);
p = CommandLineArgs;
for (av = argv, i = 0; *av != NULL; )
{
SaveArgv[i++] = newstr(*av);
if (av != argv)
*p++ = ' ';
strcpy(p, *av++);
p += strlen(p);
}
SaveArgv[i] = NULL;
if (tTd(0, 1))
{
int ll;
extern char *CompileOptions[];
printf("Version %s\n Compiled with:", Version);
av = CompileOptions;
ll = 7;
while (*av != NULL)
{
if (ll + strlen(*av) > 63)
{
putchar('\n');
ll = 0;
}
if (ll == 0)
{
putchar('\t');
putchar('\t');
}
else
putchar(' ');
printf("%s", *av);
ll += strlen(*av++) + 1;
}
putchar('\n');
}
if (tTd(0, 10))
{
int ll;
extern char *OsCompileOptions[];
printf(" OS Defines:");
av = OsCompileOptions;
ll = 7;
while (*av != NULL)
{
if (ll + strlen(*av) > 63)
{
putchar('\n');
ll = 0;
}
if (ll == 0)
{
putchar('\t');
putchar('\t');
}
else
putchar(' ');
printf("%s", *av);
ll += strlen(*av++) + 1;
}
putchar('\n');
#ifdef _PATH_UNIX
printf("Kernel symbols:\t%s\n", _PATH_UNIX);
#endif
printf(" Def Conf file:\t%s\n", getcfname());
printf(" Pid file:\t%s\n", PidFile);
}
InChannel = stdin;
OutChannel = stdout;
/* initialize for setproctitle */
initsetproctitle(argc, argv, envp);
/* clear sendmail's environment */
ExternalEnviron = environ;
emptyenviron[0] = NULL;
environ = emptyenviron;
/* prime the child environment */
setuserenv("AGENT", "sendmail");
if (setsignal(SIGINT, SIG_IGN) != SIG_IGN)
(void) setsignal(SIGINT, intsig);
(void) setsignal(SIGTERM, intsig);
(void) setsignal(SIGPIPE, SIG_IGN);
OldUmask = umask(022);
OpMode = MD_DELIVER;
FullName = getextenv("NAME");
/*
** Initialize name server if it is going to be used.
*/
#if NAMED_BIND
if (!bitset(RES_INIT, _res.options))
res_init();
if (tTd(8, 8))
_res.options |= RES_DEBUG;
else
_res.options &= ~RES_DEBUG;
# ifdef RES_NOALIASES
_res.options |= RES_NOALIASES;
# endif
#endif
errno = 0;
from = NULL;
/* initialize some macros, etc. */
initmacros(CurEnv);
init_vendor_macros(CurEnv);
/* version */
define('v', Version, CurEnv);
/* hostname */
hp = myhostname(jbuf, sizeof jbuf);
if (jbuf[0] != '\0')
{
struct utsname utsname;
if (tTd(0, 4))
printf("canonical name: %s\n", jbuf);
define('w', newstr(jbuf), CurEnv); /* must be new string */
define('j', newstr(jbuf), CurEnv);
setclass('w', jbuf);
p = strchr(jbuf, '.');
if (p != NULL)
{
if (p[1] != '\0')
{
define('m', newstr(&p[1]), CurEnv);
}
while (p != NULL && strchr(&p[1], '.') != NULL)
{
*p = '\0';
if (tTd(0, 4))
printf("\ta.k.a.: %s\n", jbuf);
setclass('w', jbuf);
*p++ = '.';
p = strchr(p, '.');
}
}
if (uname(&utsname) >= 0)
p = utsname.nodename;
else
{
if (tTd(0, 22))
printf("uname failed (%s)\n", errstring(errno));
makelower(jbuf);
p = jbuf;
}
if (tTd(0, 4))
printf(" UUCP nodename: %s\n", p);
p = newstr(p);
define('k', p, CurEnv);
setclass('k', p);
setclass('w', p);
}
if (hp != NULL)
{
for (av = hp->h_aliases; av != NULL && *av != NULL; av++)
{
if (tTd(0, 4))
printf("\ta.k.a.: %s\n", *av);
setclass('w', *av);
}
#if NETINET
if (hp->h_addrtype == AF_INET && hp->h_length == INADDRSZ)
{
register int i;
for (i = 0; hp->h_addr_list[i] != NULL; i++)
{
char ipbuf[103];
snprintf(ipbuf, sizeof ipbuf, "[%.100s]",
inet_ntoa(*((struct in_addr *) hp->h_addr_list[i])));
if (tTd(0, 4))
printf("\ta.k.a.: %s\n", ipbuf);
setclass('w', ipbuf);
}
}
#endif
}
/* current time */
define('b', arpadate((char *) NULL), CurEnv);
/*
** Crack argv.
*/
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;
optind = 1;
while ((j = getopt(argc, argv, OPTIONS)) != -1)
{
switch (j)
{
case 'b': /* operations mode */
switch (j = *optarg)
{
case MD_DAEMON:
case MD_FGDAEMON:
# if !DAEMON
usrerr("Daemon mode not implemented");
ExitStat = EX_USAGE;
break;
# endif /* DAEMON */
case MD_SMTP:
# if !SMTP
usrerr("I don't speak SMTP");
ExitStat = EX_USAGE;
break;
# endif /* SMTP */
case MD_INITALIAS:
case MD_DELIVER:
case MD_VERIFY:
case MD_TEST:
case MD_PRINT:
case MD_HOSTSTAT:
case MD_PURGESTAT:
case MD_ARPAFTP:
OpMode = j;
break;
case MD_FREEZE:
usrerr("Frozen configurations unsupported");
ExitStat = EX_USAGE;
break;
default:
usrerr("Invalid operation mode %c", j);
ExitStat = EX_USAGE;
break;
}
break;
case 'B': /* body type */
CurEnv->e_bodytype = optarg;
break;
case 'C': /* select configuration file (already done) */
if (RealUid != 0)
warn_C_flag = TRUE;
ConfFile = optarg;
(void) drop_privileges(TRUE);
safecf = FALSE;
break;
case 'd': /* debugging -- already done */
break;
case 'f': /* from address */
case 'r': /* obsolete -f flag */
if (from != NULL)
{
usrerr("More than one \"from\" person");
ExitStat = EX_USAGE;
break;
}
from = newstr(denlstring(optarg, TRUE, TRUE));
if (strcmp(RealUserName, from) != 0)
warn_f_flag = j;
break;
case 'F': /* set full name */
FullName = newstr(optarg);
break;
case 'h': /* hop count */
CurEnv->e_hopcount = strtol(optarg, &ep, 10);
if (*ep)
{
usrerr("Bad hop count (%s)", optarg);
ExitStat = EX_USAGE;
}
break;
case 'n': /* don't alias */
NoAlias = TRUE;
break;
case 'N': /* delivery status notifications */
DefaultNotify |= QHASNOTIFY;
if (strcasecmp(optarg, "never") == 0)
break;
for (p = optarg; p != NULL; optarg = p)
{
p = strchr(p, ',');
if (p != NULL)
*p++ = '\0';
if (strcasecmp(optarg, "success") == 0)
DefaultNotify |= QPINGONSUCCESS;
else if (strcasecmp(optarg, "failure") == 0)
DefaultNotify |= QPINGONFAILURE;
else if (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, CurEnv);
break;
case 'O': /* set option (long form) */
setoption(' ', optarg, FALSE, TRUE, CurEnv);
break;
case 'p': /* set protocol */
p = strchr(optarg, ':');
if (p != NULL)
{
*p++ = '\0';
if (*p != '\0')
{
ep = xalloc(strlen(p) + 1);
cleanstrcpy(ep, p, MAXNAME);
define('s', ep, CurEnv);
}
}
if (*optarg != '\0')
{
ep = xalloc(strlen(optarg) + 1);
cleanstrcpy(ep, optarg, MAXNAME);
define('r', ep, CurEnv);
}
break;
case 'q': /* run queue files at intervals */
# if QUEUE
FullName = NULL;
queuemode = TRUE;
switch (optarg[0])
{
case 'I':
QueueLimitId = newstr(&optarg[1]);
break;
case 'R':
QueueLimitRecipient = newstr(&optarg[1]);
break;
case 'S':
QueueLimitSender = newstr(&optarg[1]);
break;
default:
QueueIntvl = convtime(optarg, 'm');
break;
}
# else /* QUEUE */
usrerr("I don't know about queues");
ExitStat = EX_USAGE;
# endif /* QUEUE */
break;
case 'R': /* DSN RET: what to return */
if (bitset(EF_RET_PARAM, CurEnv->e_flags))
{
usrerr("Duplicate -R flag");
ExitStat = EX_USAGE;
break;
}
CurEnv->e_flags |= EF_RET_PARAM;
if (strcasecmp(optarg, "hdrs") == 0)
CurEnv->e_flags |= EF_NO_BODY_RETN;
else if (strcasecmp(optarg, "full") != 0)
{
usrerr("Invalid -R value");
ExitStat = EX_USAGE;
}
break;
case 't': /* read recipients from message */
GrabTo = TRUE;
break;
case 'U': /* initial (user) submission */
UserSubmission = TRUE;
break;
case 'V': /* DSN ENVID: set "original" envelope id */
if (!xtextok(optarg))
{
usrerr("Invalid syntax in -V flag");
ExitStat = EX_USAGE;
}
else
CurEnv->e_envid = newstr(optarg);
break;
case 'X': /* traffic log file */
(void) drop_privileges(TRUE);
TrafficLogFile = fopen(optarg, "a");
if (TrafficLogFile == NULL)
{
syserr("cannot open %s", optarg);
ExitStat = EX_CANTCREAT;
break;
}
#ifdef HASSETVBUF
setvbuf(TrafficLogFile, NULL, _IOLBF, 0);
#else
setlinebuf(TrafficLogFile);
#endif
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, CurEnv);
break;
case 'e': /* error message disposition */
case 'M': /* define macro */
setoption(j, optarg, FALSE, TRUE, CurEnv);
break;
case 's': /* save From lines in headers */
setoption('f', "T", FALSE, TRUE, CurEnv);
break;
# ifdef DBM
case 'I': /* initialize alias DBM file */
OpMode = MD_INITALIAS;
break;
# endif /* DBM */
# if defined(__osf__) || defined(_AIX3)
case 'x': /* random flag that OSF/1 & AIX mailx passes */
break;
# endif
# if defined(sony_news)
case 'E':
case 'J': /* ignore flags for Japanese code conversion
impremented on Sony NEWS */
break;
# endif
default:
ExitStat = EX_USAGE;
finis();
break;
}
}
av += optind;
/*
** Do basic initialization.
** Read system control file.
** Extract special fields for local use.
*/
/* set up ${opMode} for use in config file */
{
char mbuf[2];
mbuf[0] = OpMode;
mbuf[1] = '\0';
define(MID_OPMODE, newstr(mbuf), CurEnv);
}
#if XDEBUG
checkfd012("before readcf");
#endif
vendor_pre_defaults(CurEnv);
readcf(getcfname(), safecf, CurEnv);
ConfigFileRead = TRUE;
vendor_post_defaults(CurEnv);
/* Enforce use of local time (null string overrides this) */
if (TimeZoneSpec == NULL)
unsetenv("TZ");
else if (TimeZoneSpec[0] != '\0')
setuserenv("TZ", TimeZoneSpec);
else
setuserenv("TZ", NULL);
tzset();
/* avoid denial-of-service attacks */
resetlimits();
if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON)
{
/* drop privileges -- daemon mode done after socket/bind */
(void) drop_privileges(FALSE);
}
/*
** Find our real host name for future logging.
*/
p = getauthinfo(STDIN_FILENO);
define('_', p, CurEnv);
/* suppress error printing if errors mailed back or whatever */
if (CurEnv->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, CurEnv);
setclass('m', jbuf);
/* probe interfaces and locate any additional names */
if (!DontProbeInterfaces)
load_if_names();
if (tTd(0, 1))
{
printf("\n============ SYSTEM IDENTITY (after readcf) ============");
printf("\n (short domain name) $w = ");
xputs(macvalue('w', CurEnv));
printf("\n (canonical domain name) $j = ");
xputs(macvalue('j', CurEnv));
printf("\n (subdomain name) $m = ");
xputs(macvalue('m', CurEnv));
printf("\n (node name) $k = ");
xputs(macvalue('k', CurEnv));
printf("\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(CurEnv, "Processed by %s with -C %s",
RealUserName, ConfFile);
if (Warn_Q_option)
auth_warning(CurEnv, "Processed from queue %s", QueueDir);
/* check body type for legality */
if (CurEnv->e_bodytype == NULL)
/* nothing */ ;
else if (strcasecmp(CurEnv->e_bodytype, "7BIT") == 0)
SevenBitInput = TRUE;
else if (strcasecmp(CurEnv->e_bodytype, "8BITMIME") == 0)
SevenBitInput = FALSE;
else
{
usrerr("Illegal body type %s", CurEnv->e_bodytype);
CurEnv->e_bodytype = NULL;
}
/* tweak default DSN notifications */
if (DefaultNotify == 0)
DefaultNotify = QPINGONFAILURE|QPINGONDELAY;
/* be sure we don't pick up bogus HOSTALIASES environment variable */
if (queuemode && RealUid != 0)
(void) unsetenv("HOSTALIASES");
/* 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;
printf("Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n");
}
/* need HostStatusDir in order to have SingleThreadDelivery */
if (SingleThreadDelivery && HostStatDir == NULL)
{
SingleThreadDelivery = FALSE;
printf("Warning: HostStatusDirectory required for SingleThreadDelivery\n");
}
/* check for permissions */
if ((OpMode == MD_DAEMON || OpMode == MD_PURGESTAT) && RealUid != 0)
{
if (LogLevel > 1)
sm_syslog(LOG_ALERT, NOQID,
"user %d attempted to %s",
RealUid,
OpMode == MD_DAEMON ? "run daemon"
: "purge host status");
usrerr("Permission denied");
exit(EX_USAGE);
}
if (MeToo)
BlankEnvelope.e_flags |= EF_METOO;
switch (OpMode)
{
case MD_TEST:
/* don't have persistent host status in test mode */
HostStatDir = NULL;
Verbose = 2;
CurEnv->e_errormode = EM_PRINT;
break;
case MD_FGDAEMON:
run_in_foreground = TRUE;
OpMode = MD_DAEMON;
/* fall through ... */
case MD_DAEMON:
vendor_daemon_setup(CurEnv);
/* 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");
setsignal(SIGHUP, sighup);
/* workaround: can't seem to release the signal in the parent */
releasesignal(SIGHUP);
break;
case MD_INITALIAS:
Verbose = 2;
CurEnv->e_errormode = EM_PRINT;
/* fall through... */
case MD_PRINT:
/* to handle sendmail -bp -qSfoobar properly */
queuemode = FALSE;
/* fall through... */
default:
/* arrange to exit cleanly on hangup signal */
if (setsignal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL)
setsignal(SIGHUP, intsig);
break;
}
/* full names can't have newlines */