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#ifndef lint
static char sccsid[] = "@(#)spost.c 1.6 (Berkeley) 11/2/85";
#endif
#ifndef lint
static char ident[] = "@(#)$Id: spost.c,v 1.8 1992/12/15 00:20:22 jromine Exp $";
#endif /* lint */
/* spost.c - feed messages to sendmail */
/*
* (This is a simpler, faster, replacement for "post" for use when "sendmail"
* is the transport system)
*/
#include <ctype.h>
#include <stdio.h>
#include <signal.h>
#include "../h/mh.h"
#include "../h/addrsbr.h"
#include "../h/aliasbr.h"
#include "../h/dropsbr.h"
#include "../zotnet/tws.h"
#ifdef LOCALE
#include <locale.h>
#endif
extern char *getfullname (), *getusr ();
extern char *sendmail;
#define uptolow(c) ((isalpha(c) && isupper (c)) ? tolower (c) : c)
#define MAX_SM_FIELD 1476 /* < largest hdr field sendmail will accept */
#define FCCS 10 /* max number of fccs allowed */
/* */
struct swit switches[] = {
#define FILTSW 0
"filter filterfile", 0,
#define NFILTSW 1
"nofilter", 0,
#define FRMTSW 2
"format", 0,
#define NFRMTSW 3
"noformat", 0,
#define REMVSW 4
"remove", 0,
#define NREMVSW 5
"noremove", 0,
#define VERBSW 6
"verbose", 0,
#define NVERBSW 7
"noverbose", 0,
#define WATCSW 8
"watch", 0,
#define NWATCSW 9
"nowatch", 0,
#define HELPSW 10
"help", 4,
#define DEBUGSW 11
"debug", -5,
#define DISTSW 12
"dist", -4, /* interface from dist */
#define BACKSW 13
"backup", 0,
#define NBACKSW 14
"nobackup", 0,
#define CHKSW 15
"check", -5, /* interface from whom */
#define NCHKSW 16
"nocheck", -7, /* interface from whom */
#define WHOMSW 17
"whom", -4, /* interface from whom */
#define PUSHSW 18 /* fork to sendmail then exit */
"push", -4,
#define NPUSHSW 19 /* exec sendmail */
"nopush", -6,
#define ALIASW 20
"alias aliasfile", 0,
#define NALIASW 21
"noalias", 0,
#define WIDTHSW 22
"width columns", 0,
#define LIBSW 23
"library directory", -7,
#define ANNOSW 24
"idanno number", -6,
NULL, 0
};
/* */
struct headers {
char *value;
unsigned int flags;
#define HNOP 0x0000 /* just used to keep .set around */
#define HBAD 0x0001 /* bad header - don't let it through */
#define HADR 0x0002 /* header has an address field */
#define HSUB 0x0004 /* Subject: header */
#define HTRY 0x0008 /* try to send to addrs on header */
#define HBCC 0x0010 /* don't output this header */
#define HMNG 0x0020 /* mung this header */
#define HNGR 0x0040 /* no groups allowed in this header */
#define HFCC 0x0080 /* FCC: type header */
#define HNIL 0x0100 /* okay for this header not to have addrs */
#define HIGN 0x0200 /* ignore this header */
unsigned int set;
#define MFRM 0x0001 /* we've seen a From: */
#define MDAT 0x0002 /* we've seen a Date: */
#define MRFM 0x0004 /* we've seen a Resent-From: */
#define MVIS 0x0008 /* we've seen sighted addrs */
#define MINV 0x0010 /* we've seen blind addrs */
#define MRDT 0x0020 /* we've seen a Resent-Date: */
};
/* */
static struct headers NHeaders[] = {
"Return-Path", HBAD, 0,
"Received", HBAD, 0,
"Reply-To", HADR | HNGR, 0,
"From", HADR | HNGR, MFRM,
"Sender", HADR | HBAD, 0,
"Date", HNOP, MDAT,
"Subject", HSUB, 0,
"To", HADR | HTRY, MVIS,
"cc", HADR | HTRY, MVIS,
"Bcc", HADR | HTRY | HBCC | HNIL, MINV,
"Message-Id", HBAD, 0,
"Fcc", HFCC, 0,
NULL
};
static struct headers RHeaders[] = {
"Resent-Reply-To", HADR | HNGR, 0,
"Resent-From", HADR | HNGR, MRFM,
"Resent-Sender", HADR | HBAD, 0,
"Resent-Date", HNOP, MRDT,
"Resent-Subject", HSUB, 0,
"Resent-To", HADR | HTRY, MVIS,
"Resent-cc", HADR | HTRY, MVIS,
"Resent-Bcc", HADR | HTRY | HBCC, MINV,
"Resent-Message-Id", HBAD, 0,
"Resent-Fcc", HFCC, 0,
"Reply-To", HADR, 0,
"Fcc", HIGN, 0,
NULL
};
/* */
static short fccind = 0; /* index into fccfold[] */
static int badmsg = 0; /* message has bad semantics */
static int verbose = 0; /* spell it out */
static int debug = 0; /* debugging post */
static int rmflg = 1; /* remove temporary file when done */
static int watch = 0; /* watch the delivery process */
static int backflg = 0; /* rename input file as *.bak when done */
static int whomflg = 0; /* if just checking addresses */
static int pushflg = 0; /* if going to fork to sendmail */
static int aliasflg = -1; /* if going to process aliases */
static int outputlinelen=72;
static unsigned msgflags = 0; /* what we've seen */
static enum {
normal, resent
} msgstate = normal;
static char tmpfil[] = "/tmp/pstXXXXXX";
static char from[BUFSIZ]; /* my network address */
static char signature[BUFSIZ]; /* my signature */
static char *filter = NULL; /* the filter for BCC'ing */
static char *subject = NULL; /* the subject field for BCC'ing */
static char *fccfold[FCCS]; /* foldernames for FCC'ing */
static struct headers *hdrtab; /* table for the message we're doing */
static FILE *out; /* output (temp) file */
static putfmt(), start_headers(), finish_headers(), putadr(),
insert_fcc();
static file(), fcc();
static int get_header(), putone();
/* MAIN */
/* ARGSUSED */
main (argc, argv)
int argc;
char *argv[];
{
int state,
i,
pid,
compnum;
char *cp,
*msg = NULL,
**argp = argv + 1,
*sargv[16],
buf[BUFSIZ],
name[NAMESZ],
*arguments[MAXARGS];
FILE * in;
#ifdef LOCALE
setlocale(LC_ALL, "");
#endif
invo_name = r1bindex (argv[0], '/');
mts_init (invo_name);
if ((cp = m_find (invo_name)) != NULL) {
argp = copyip (brkstring (cp, " ", "\n"), arguments);
(void) copyip (argv+1, argp);
argp = arguments;
}
/* */
while (cp = *argp++) {
if (*cp == '-')
switch (smatch (++cp, switches)) {
case AMBIGSW:
ambigsw (cp, switches);
done (1);
case UNKWNSW:
adios (NULLCP, "-%s unknown", cp);
case HELPSW:
(void)sprintf (buf, "%s [switches] file", invo_name);
help (buf, switches);
done (1);
case DEBUGSW:
debug++;
continue;
case DISTSW:
msgstate = resent;
continue;
case WHOMSW:
whomflg++;
continue;
case FILTSW:
if (!(filter = *argp++) || *filter == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
continue;
case NFILTSW:
filter = NULL;
continue;
case REMVSW:
rmflg++;
continue;
case NREMVSW:
rmflg = 0;
continue;
case BACKSW:
backflg++;
continue;
case NBACKSW:
backflg = 0;
continue;
case VERBSW:
verbose++;
continue;
case NVERBSW:
verbose = 0;
continue;
case WATCSW:
watch++;
continue;
case NWATCSW:
watch = 0;
continue;
case PUSHSW:
pushflg++;
continue;
case NPUSHSW:
pushflg = 0;
continue;
case ALIASW:
if (!(cp = *argp++) || *cp == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
if (aliasflg < 0)
(void) alias (AliasFile);/* load default aka's */
aliasflg = 1;
if ((state = alias(cp)) != AK_OK)
adios (NULLCP, "aliasing error in file %s - %s",
cp, akerror(state) );
continue;
case NALIASW:
aliasflg = 0;
continue;
case WIDTHSW:
if (!(cp = *argp++) || *cp == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
outputlinelen = atoi (cp);
if (outputlinelen <= 10)
outputlinelen = 72;
continue;
case LIBSW:
case ANNOSW:
/* -library & -idanno switch ignored */
if (!(cp = *argp++) || *cp == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
continue;
}
if (msg)
adios (NULLCP, "only one message at a time!");
else
msg = cp;
}
/* */
if (aliasflg < 0)
(void) alias (AliasFile); /* load default aka's */
if (!msg)
adios (NULLCP, "usage: %s [switches] file", invo_name);
if ((in = fopen (msg, "r")) == NULL)
adios (msg, "unable to open");
start_headers ();
if (debug) {
verbose++;
out = stdout;
}
else {
(void)mktemp (tmpfil);
if ((out = fopen (tmpfil, "w")) == NULL)
adios (tmpfil, "unable to create");
(void)chmod (tmpfil, 0600);
}
hdrtab = (msgstate == normal) ? NHeaders : RHeaders;
for (compnum = 1, state = FLD;;) {
switch (state = m_getfld (state, name, buf, sizeof buf, in)) {
case FLD:
compnum++;
putfmt (name, buf, out);
continue;
case FLDPLUS:
compnum++;
cp = add (buf, cp);
while (state == FLDPLUS) {
state = m_getfld (state, name, buf, sizeof buf, in);
cp = add (buf, cp);
}
putfmt (name, cp, out);
free (cp);
continue;
case BODY:
finish_headers (out);
fprintf (out, "\n%s", buf);
if(whomflg == 0)
while (state == BODY) {
state = m_getfld (state, name, buf, sizeof buf, in);
fputs (buf, out);
}
break;
case FILEEOF:
finish_headers (out);
break;
case LENERR:
case FMTERR:
adios (NULLCP, "message format error in component #%d",
compnum);
default:
adios (NULLCP, "getfld() returned %d", state);
}
break;
}
/* */
(void)fclose (in);
if (backflg && !whomflg) {
(void) strcpy (buf, m_backup (msg));
if (rename (msg, buf) == NOTOK)
advise (buf, "unable to rename %s to", msg);
}
if (debug) {
done (0);
}
else
(void)fclose (out);
file (tmpfil);
/*
* re-open the temp file, unlink it and exec sendmail, giving it
* the msg temp file as std in.
*/
if ( freopen( tmpfil, "r", stdin) == NULL)
adios (tmpfil, "can't reopen for sendmail");
if (rmflg)
(void)unlink (tmpfil);
argp = sargv;
*argp++ = "send-mail";
*argp++ = "-m"; /* send to me too */
*argp++ = "-t"; /* read msg for recipients */
*argp++ = "-i"; /* don't stop on "." */
if (whomflg)
*argp++ = "-bv";
if (watch || verbose)
*argp++ = "-v";
*argp = NULL;
if (pushflg && !(watch || verbose)) {
/* fork to a child to run sendmail */
for (i=0; (pid = vfork()) == NOTOK && i < 5; i++)
sleep(5);
switch (pid) {
case NOTOK:
fprintf (verbose ? stdout : stderr, "%s: can't fork to %s\n",
invo_name, sendmail);
exit(-1);
case OK:
/* we're the child .. */
break;
default:
exit(0);
}
}
execv ( sendmail, sargv);
adios ( sendmail, "can't exec");
}
/* DRAFT GENERATION */
static putfmt (name, str, out)
char *name,
*str;
FILE * out;
{
int count,
grp,
i,
keep;
char *cp,
*pp,
*qp,
namep[BUFSIZ];
struct mailname *mp,
*np;
struct headers *hdr;
while (*str == ' ' || *str == '\t')
str++;
if ((i = get_header (name, hdrtab)) == NOTOK) {
fprintf (out, "%s: %s", name, str);
return;
}
hdr = &hdrtab[i];
if (hdr -> flags & HIGN)
return;
if (hdr -> flags & HBAD) {
advise (NULLCP, "illegal header line -- %s:", name);
badmsg++;
return;
}
msgflags |= hdr -> set;
if (hdr -> flags & HSUB)
subject = subject ? add (str, add ("\t", subject)) : getcpy (str);
if (hdr -> flags & HFCC) {
if (cp = rindex (str, '\n'))
*cp = 0;
for (cp = pp = str; cp = index (pp, ','); pp = cp) {
*cp++ = 0;
insert_fcc (hdr, pp);
}
insert_fcc (hdr, pp);
return;
}
#ifdef notdef
if (hdr -> flags & HBCC) {
insert_bcc(str);
return;
}
#endif /* notdef */
if (*str != '\n' && *str != '\0')
if (aliasflg && hdr->flags & HTRY) {
/* this header contains address(es) that we have to do
* alias expansion on. Because of the saved state in
* getname we have to put all the addresses into a list.
* We then let putadr munch on that list, possibly
* expanding aliases.
*/
register struct mailname *f = 0;
register struct mailname *mp = 0;
while (cp = getname( str ) ) {
mp = getm( cp, NULLCP, 0, AD_HOST, NULLCP);
if (f == 0) {
f = mp;
mp->m_next = mp;
} else {
mp->m_next = f->m_next;
f->m_next = mp;
f = mp;
}
}
f = mp->m_next; mp->m_next = 0;
putadr( name, f );
} else {
fprintf (out, "%s: %s", name, str );
}
}
/* */
static
start_headers ()
{
char *cp;
char sigbuf[BUFSIZ];
(void)strcpy( from, getusr() );
if ((cp = getfullname ()) && *cp) {
(void)strcpy (sigbuf, cp);
(void)sprintf (signature, "%s <%s>", sigbuf, from);
}
else
(void)sprintf (signature, "%s", from);
}
/* */
static
finish_headers (out)
FILE * out;
{
switch (msgstate) {
case normal:
if (!(msgflags & MDAT))
fprintf (out, "Date: %s\n", dtimenow ());
if (msgflags & MFRM)
fprintf (out, "Sender: %s\n", from);
else
fprintf (out, "From: %s\n", signature);
#ifdef notdef
if (!(msgflags & MVIS))
fprintf (out, "Bcc: Blind Distribution List: ;\n");
#endif /* notdef */
break;
case resent:
if (!(msgflags & MRDT))
fprintf (out, "Resent-Date: %s\n", dtimenow());
if (msgflags & MRFM)
fprintf (out, "Resent-Sender: %s\n", from);
else
fprintf (out, "Resent-From: %s\n", signature);
#ifdef notdef
if (!(msgflags & MVIS))
fprintf (out, "Resent-Bcc: Blind Re-Distribution List: ;\n");
#endif /* notdef */
break;
}
if (badmsg)
adios (NULLCP, "re-format message and try again");
}
/* */
static int
get_header (header, table)
char *header;
struct headers *table;
{
struct headers *h;
for (h = table; h -> value; h++)
if (uleq (header, h -> value))
return (h - table);
return NOTOK;
}
/* */
/* output the address list for header "name". The address list
* is a linked list of mailname structs. "nl" points to the head
* of the list. Alias substitution should be done on nl.
*/
static putadr (name, nl)
char *name;
struct mailname *nl;
{
register struct mailname *mp, *mp2;
register int linepos;
register char *cp;
int namelen;
fprintf (out, "%s: ", name);
namelen = strlen(name) + 2;
linepos = namelen;
for (mp = nl; mp; ) {
if (linepos > MAX_SM_FIELD) {
fprintf (out, "\n%s: ", name);
linepos = namelen;
}
if (mp->m_nohost) {
/* a local name - see if it's an alias */
cp = akvalue(mp->m_mbox);
if (cp == mp->m_mbox)
/* wasn't an alias - use what the user typed */
linepos = putone( mp->m_text, linepos, namelen );
else
/* an alias - expand it */
while (cp = getname(cp) ) {
if (linepos > MAX_SM_FIELD) {
fprintf (out, "\n%s: ", name);
linepos = namelen;
}
mp2 = getm( cp, NULLCP, 0, AD_HOST, NULLCP);
if (akvisible()) {
mp2->m_pers = getcpy(mp->m_mbox);
linepos = putone( adrformat(mp2), linepos, namelen );
} else {
linepos = putone( mp2->m_text, linepos, namelen );
}
mnfree( mp2 );
}
} else {
/* not a local name - use what the user typed */
linepos = putone( mp->m_text, linepos, namelen );
}
mp2 = mp;
mp = mp->m_next;
mnfree( mp2 );
}
putc( '\n', out );
}
static int putone ( adr, pos, indent )
register char *adr;
register int pos;
int indent;
{
register int len;
static int linepos;
len = strlen( adr );
if (pos == indent)
linepos = pos;
else if ( linepos+len > outputlinelen ) {
fprintf ( out, ",\n%*s", indent, "");
linepos = indent;
pos += indent + 2;
}
else {
fputs( ", ", out );
linepos += 2;
pos += 2;
}
fputs( adr, out );
linepos += len;
return (pos+len);
}
/* */
static insert_fcc (hdr, pp)
struct headers *hdr;
char *pp;
{
char *cp;
for (cp = pp; isspace (*cp); cp++)
continue;
for (pp += strlen (pp) - 1; pp > cp && isspace (*pp); pp--)
continue;
if (pp >= cp)
*++pp = 0;
if (*cp == 0)
return;
if (fccind >= FCCS)
adios (NULLCP, "too many %ss", hdr -> value);
fccfold[fccind++] = getcpy (cp);
}
#ifdef notdef
/* BCC GENERATION */
static make_bcc_file () {
int fd,
i,
child_id,
status;
char *vec[6];
FILE * in, *out;
(void)mktemp (bccfil);
if ((out = fopen (bccfil, "w")) == NULL)
adios (bccfil, "unable to create");
(void)chmod (bccfil, 0600);
fprintf (out, "Date: %s\n", dtimenow ());
fprintf (out, "From: %s\n", signature);
if (subject)
fprintf (out, "Subject: %s", subject);
fprintf (out, "BCC:\n\n------- Blind-Carbon-Copy\n\n");
(void)fflush (out);
if (filter == NULL) {
if ((fd = open (tmpfil, 0)) == NOTOK)
adios (NULLCP, "unable to re-open");
cpydgst (fd, fileno (out), tmpfil, bccfil);
close (fd);
}
else {
vec[0] = r1bindex (mhlproc, '/');
for (i = 0; (child_id = vfork ()) == NOTOK && i < 5; i++)
sleep (5);
switch (child_id) {
case NOTOK:
adios ("vfork", "unable to");
case OK:
dup2 (fileno (out), 1);
i = 1;
vec[i++] = "-forward";
vec[i++] = "-form";
vec[i++] = filter;
vec[i++] = tmpfil;
vec[i] = NULL;
execvp (mhlproc, vec);
adios (mhlproc, "unable to exec");
default:
if (status = pidwait (child_id, OK))
admonish (NULL, "%s lost (status=0%o)", vec[0], status);
break;
}
}
fseek (out, 0L, 2);
fprintf (out, "\n------- End of Blind-Carbon-Copy\n");
(void)fclose (out);
}
#endif /* notdef */
/* FCC INTERACTION */
static file (path)
char *path;
{
int i;
if (fccind == 0)
return;
for (i = 0; i < fccind; i++)
if (whomflg)
printf ("Fcc: %s\n", fccfold[i]);
else
fcc (path, fccfold[i]);
}
static fcc (file, folder)
char *file,
*folder;
{
int i,
child_id,
status;
char fold[BUFSIZ];
if (verbose)
printf ("%sFcc: %s\n", msgstate == resent ? "Resent-" : "", folder);
(void)fflush (stdout);
for (i = 0; (child_id = vfork ()) == NOTOK && i < 5; i++)
sleep (5);
switch (child_id) {
case NOTOK:
if (!verbose)
fprintf (stderr, " %sFcc %s: ",
msgstate == resent ? "Resent-" : "", folder);
fprintf (verbose ? stdout : stderr, "no forks, so not ok\n");
break;
case OK:
(void)sprintf (fold, "%s%s",
*folder == '+' || *folder == '@' ? "" : "+", folder);
execlp (fileproc, r1bindex (fileproc, '/'),
"-link", "-file", file, fold, NULL);
_exit (-1);
default:
if (status = pidwait (child_id, OK)) {
if (!verbose)
fprintf (stderr, " %sFcc %s: ",
msgstate == resent ? "Resent-" : "", folder);
fprintf (verbose ? stdout : stderr,
" errored (0%o)\n", status);
}
}
(void)fflush (stdout);
}
/* TERMINATION */
/* VARARGS2 */
static die (what, fmt, a, b, c, d)
char *what,
*fmt,
*a,
*b,
*c,
*d;
{
adios (what, fmt, a, b, c, d);
}
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