4.4BSD/usr/src/contrib/mh-6.8/uip/inc.c
/* inc.c - incorporate messages from a maildrop into a folder */
#ifndef lint
static char ident[] = "@(#)$Id: inc.c,v 1.20 1992/12/15 00:20:22 jromine Exp $";
#endif /* lint */
#ifdef MAILGROUP
/* Revised: Sat Apr 14 17:08:17 PDT 1990 (marvit@hplabs)
* Added hpux hacks to set and reset gid to be "mail" as needed. The reset
* is necessary so inc'ed mail is the group of the inc'er, rather than
* "mail". We setgid to egid only when [un]locking the mail file. This
* is also a major security precaution which will not be explained here.
*
* Fri Feb 7 16:04:57 PST 1992 John Romine <bug-mh@ics.uci.edu>
* NB: I'm not 100% sure that this setgid stuff is secure even now.
*/
#endif
#include "../h/mh.h"
#ifdef POP
#include "../h/dropsbr.h"
#endif
#ifdef KPOP
#include <krb.h>
#endif
#ifdef HESIOD
#include <hesiod.h>
#endif
#include "../h/formatsbr.h"
#include "../h/scansbr.h"
#include "../zotnet/tws.h"
#include <stdio.h>
#include "../zotnet/mts.h"
#include <errno.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef LOCALE
#include <locale.h>
#endif
/* */
#ifndef MF
#define MFminc(a) (a)
#else /* MF */
#define MFminc(a) 0
#endif /* MF */
#ifndef POP
#define POPminc(a) (a)
#else /* POP */
#define POPminc(a) 0
#endif /* POP */
#ifndef RPOP
#define RPOPminc(a) (a)
#else /* RPOP */
#define RPOPminc(a) 0
#endif /* RPOP */
#ifndef APOP
#define APOPminc(a) (a)
#else
#define APOPminc(a) 0
#endif /* APOP */
#ifndef TMA
#define TMAminc(a) (a)
#else /* TMA */
#define TMAminc(a) 0
#endif /* TMA */
static struct swit switches[] = {
#define AUDSW 0
"audit audit-file", 0,
#define NAUDSW 1
"noaudit", 0,
#define CHGSW 2
"changecur", 0,
#define NCHGSW 3
"nochangecur", 0,
#define DECRSW 4
"decrypt", TMAminc (-7),
#define NDECRSW 5
"nodecrypt", TMAminc (-9),
#define MSW 6
"file name", 0,
#define FORMSW 7
"form formatfile", 0,
#define FMTSW 8
"format string", 5,
#define HOSTSW 9
"host host", POPminc (-4),
#define USERSW 10
"user user", POPminc (-4),
#define PACKSW 11
"pack file", POPminc (-4),
#define NPACKSW 12
"nopack", POPminc (-6),
#define APOPSW 13
"apop", APOPminc (-4),
#define NAPOPSW 14
"noapop", APOPminc (-6),
#define RPOPSW 15
"rpop", RPOPminc (-4),
#define NRPOPSW 16
"norpop", RPOPminc (-6),
#define SILSW 17
"silent", 0,
#define NSILSW 18
"nosilent", 0,
#define TRNCSW 19
"truncate", 0,
#define NTRNCSW 20
"notruncate", 0,
#define UUCPSW 21
"uucp", MFminc (-4),
#define NUUCPSW 22
"nouucp", MFminc (-6),
#define WIDSW 23
"width columns", 0,
#define HELPSW 24
"help", 4,
NULL, 0
};
/* */
extern int errno;
#ifdef POP
int snoop = 0;
extern char response[];
static char *file = NULL;
static int size;
static long pos;
static long start;
static long stop;
static int pd = NOTOK;
static FILE *pf = NULL;
static int pop_action (), pop_pack ();
static int map_count();
#endif /* POP */
/* * /
/* ARGSUSED */
#ifdef MAILGROUP /* For setting and returning to "mail" gid */
static int return_gid;
#endif /* MAILGROUP */
main (argc, argv)
int argc;
char *argv[];
{
int chgflag = 1,
trnflag = 1,
decflag = 1,
noisy = 1,
width = 0,
#ifdef MF
uucp = 1,
#endif /* MF */
locked = 0,
#ifdef POP
nmsgs,
nbytes,
p = 0,
#endif /* POP */
rpop = 1,
i,
hghnum,
msgnum;
char *cp,
*maildir,
*folder = NULL,
*form = NULL,
*format = NULL,
*audfile = NULL,
*from = NULL,
*host = NULL,
#ifdef POP
*pass = NULL,
#endif /* POP */
*newmail,
buf[100],
**ap,
**argp,
*nfs,
*arguments[MAXARGS];
char *user = NULL;
struct msgs *mp;
struct stat st,
s1;
FILE *in, *aud = NULL;
#ifdef MHE
FILE *mhe = NULL;
#endif /* MHE */
#ifdef HESIOD
struct hes_postoffice *po;
char *tmphost;
#endif
#ifdef LOCALE
setlocale(LC_ALL, "");
#endif
invo_name = r1bindex (argv[0], '/');
mts_init (invo_name);
#ifdef POP
if ((cp = getenv ("MHPOPDEBUG")) && *cp)
snoop++;
#endif
if ((cp = m_find (invo_name)) != NULL) {
ap = brkstring (cp = getcpy (cp), " ", "\n");
ap = copyip (ap, arguments);
}
else
ap = arguments;
(void) copyip (argv + 1, ap);
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 [+folder] [switches]", invo_name);
help (buf, switches);
done (1);
case AUDSW:
if (!(cp = *argp++) || *cp == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
audfile = getcpy (m_maildir (cp));
continue;
case NAUDSW:
audfile = NULL;
continue;
case CHGSW:
chgflag++;
continue;
case NCHGSW:
chgflag = 0;
continue;
case TRNCSW:
trnflag++;
continue;
case MSW:
if (!(cp = *argp++) || *cp == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
from = path (cp, TFILE);/* fall */
case NTRNCSW:
trnflag = 0;
continue;
case SILSW:
noisy = 0;
continue;
case NSILSW:
noisy++;
continue;
case FORMSW:
if (!(form = *argp++) || *form == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
format = NULL;
continue;
case FMTSW:
if (!(format = *argp++) || *format == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
form = NULL;
continue;
case WIDSW:
if (!(cp = *argp++) || *cp == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
width = atoi (cp);
continue;
case DECRSW:
decflag++;
continue;
case NDECRSW:
decflag = 0;
continue;
case UUCPSW:
#ifdef MF
uucp++;
#endif /* MF */
continue;
case NUUCPSW:
#ifdef MF
uucp = 0;
#endif /* MF */
continue;
case HOSTSW:
if (!(host = *argp++) || *host == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
continue;
case USERSW:
if (!(user = *argp++) || *user == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
continue;
case PACKSW:
#ifndef POP
if (!(cp = *argp++) || *cp == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
#else /* POP */
if (!(file = *argp++) || *file == '-')
adios (NULLCP, "missing argument to %s", argp[-2]);
#endif /* POP */
continue;
case NPACKSW:
#ifdef POP
file = NULLCP;
#endif /* POP */
continue;
case APOPSW:
rpop = -1;
continue;
case RPOPSW:
rpop = 1;
continue;
case NAPOPSW:
case NRPOPSW:
rpop = 0;
continue;
}
if (*cp == '+' || *cp == '@') {
if (folder)
adios (NULLCP, "only one folder at a time!");
else
folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
}
else
adios (NULLCP, "usage: %s [+folder] [switches]", invo_name);
}
/* */
#ifdef MAILGROUP
return_gid = getegid(); /* Save effective gid, assuming we'll use it */
setgid(getgid()); /* Turn off extraordinary privileges */
#endif /* MAILGROUP */
#ifdef POP
#ifdef HESIOD
/*
* Scheme is:
* use MAILHOST environment variable if present,
* else try Hesiod.
* If that fails, use the default (if any)
* provided by mtstailor in mts_init()
*/
if (pophost == NULL || pophost[0] == '\0')
{
if ((tmphost = getenv("MAILHOST")) != NULL)
pophost = tmphost;
else if ((po = hes_getmailhost(getusr())) != NULL &&
strcmp(po->po_type, "POP") == 0)
pophost = po->po_host;
}
#endif /* HESIOD */
if (pophost && *pophost)
host = pophost;
if (host && !*host)
host = NULL;
if (from || !host || rpop <= 0)
(void) setuid (getuid ());
#endif /* POP */
if (from) {
newmail = from;
#ifdef POP
host = NULL;
#endif /* POP */
if (stat (newmail, &s1) == NOTOK || s1.st_size == 0)
adios (NULLCP, "no mail to incorporate");
}
#ifdef POP
else if (host) {
if (rpop) {
if (user == NULL)
user = getusr ();
pass = getusr ();
}
else
ruserpass (host, &user, &pass);
if (pop_init (host, user, pass, snoop, rpop) == NOTOK
|| pop_stat (&nmsgs, &nbytes) == NOTOK)
adios (NULLCP, "%s", response);
if (rpop)
(void) setuid (getuid ());
if (nmsgs == 0) {
(void) pop_quit ();
adios (NULLCP, "no mail to incorporate");
}
}
#endif /* POP */
else {
if (((newmail = getenv ("MAILDROP")) && *newmail)
|| ((newmail = m_find ("maildrop")) && *newmail))
newmail = m_mailpath (newmail);
else {
#ifdef MF
if (uucp && umincproc && *umincproc)
get_uucp_mail ();
#endif /* MF */
newmail = concat (MAILDIR, "/", MAILFIL, NULLCP);
}
if (stat (newmail, &s1) == NOTOK || s1.st_size == 0)
adios (NULLCP, "no mail to incorporate");
}
#ifdef POP
if (host && file)
goto go_to_it;
#endif /* POP */
if (!m_find ("path"))
free (path ("./", TFOLDER));
if (!folder && !(folder = m_find (inbox)))
folder = defalt;
maildir = m_maildir (folder);
if (stat (maildir, &st) == NOTOK) {
if (errno != ENOENT)
adios (maildir, "error on folder");
cp = concat ("Create folder \"", maildir, "\"? ", NULLCP);
if (noisy && !getanswer (cp))
done (1);
free (cp);
if (!makedir (maildir))
adios (NULLCP, "unable to create folder %s", maildir);
}
if (chdir (maildir) == NOTOK)
adios (maildir, "unable to change directory to");
if (!(mp = m_gmsg (folder)))
adios (NULLCP, "unable to read folder %s", folder);
/* */
#ifdef POP
go_to_it: ;
if (host == NULL)
#endif /* POP */
if (access (newmail, 02) == NOTOK) {
trnflag = 0;
if ((in = fopen (newmail, "r")) == NULL)
adios (newmail, "unable to read");
}
else {
locked++;
if (trnflag) {
(void) signal (SIGHUP, SIG_IGN);
(void) signal (SIGINT, SIG_IGN);
(void) signal (SIGQUIT, SIG_IGN);
(void) signal (SIGTERM, SIG_IGN);
}
#ifdef MAILGROUP
setgid(return_gid); /* Reset gid to lock mail file */
#endif /* MAILGROUP */
if ((in = lkfopen (newmail, "r")) == NULL)
adios (NULLCP, "unable to lock and fopen %s", newmail);
#ifdef MAILGROUP
setgid(getgid()); /* Return us to normal privileges */
#endif /* MAILGROUP */
(void) fstat (fileno(in), &s1);
}
#ifdef MAILGROUP
setgid(getgid()); /* Return us to normal privileges */
#endif /* MAILGROUP */
if (audfile) {
if ((i = stat (audfile, &st)) == NOTOK)
advise (NULLCP, "Creating Receive-Audit: %s", audfile);
if ((aud = fopen (audfile, "a")) == NULL)
adios (audfile, "unable to append to");
else
if (i == NOTOK)
(void) chmod (audfile, m_gmprot ());
#ifndef POP
fprintf (aud, from ? "<<inc>> %s -ms %s\n" : "<<inc>> %s\n",
dtimenow (), from);
#else /* POP */
fprintf (aud, from ? "<<inc>> %s -ms %s\n"
: host ? "<<inc>> %s -host %s -user %s%s\n"
: "<<inc>> %s\n",
dtimenow (), from ? from : host, user,
rpop < 0 ? " -apop" : rpop > 0 ? " -rpop" : "");
#endif /* POP */
}
#ifdef MHE
if (m_find ("mhe")) {
cp = concat (maildir, "/++", NULLCP);
i = stat (cp, &st);
if ((mhe = fopen (cp, "a")) == NULL)
admonish (cp, "unable to append to");
else
if (i == NOTOK)
(void) chmod (cp, m_gmprot ());
free (cp);
}
#endif /* MHE */
nfs = new_fs (form, format, FORMAT);
if (noisy) {
printf ("Incorporating new mail into %s...\n\n", folder);
(void) fflush (stdout);
}
/* */
#ifdef POP
if (host) {
if (file) {
file = path (file, TFILE);
if (stat (file, &st) == NOTOK) {
if (errno != ENOENT)
adios (file, "error on file");
cp = concat ("Create file \"", file, "\"? ", NULLCP);
if (noisy && !getanswer (cp))
done (1);
free (cp);
}
msgnum = map_count ();
if ((pd = mbx_open (file, getuid (), getgid (), m_gmprot ()))
== NOTOK)
adios (file, "unable to open");
if ((pf = fdopen (pd, "w+")) == NULL)
adios (NULLCP, "unable to fdopen %s", file);
}
else {
hghnum = msgnum = mp -> hghmsg;
if ((mp = m_remsg (mp, 0, mp -> hghmsg + nmsgs)) == NULL)
adios (NULLCP, "unable to allocate folder storage");
}
for (i = 1; i <= nmsgs; i++) {
msgnum++;
if (file) {
(void) fseek (pf, 0L, 1);
pos = ftell (pf);
size = 0;
(void) fwrite (mmdlm1, 1, strlen (mmdlm1), pf);
start = ftell (pf);
if (pop_retr (i, pop_pack) == NOTOK)
adios (NULLCP, "%s", response);
(void) fseek (pf, 0L, 1);
stop = ftell (pf);
if (fflush (pf))
adios (file, "write error on");
(void) fseek (pf, start, 0);
}
else {
cp = getcpy (m_name (msgnum));
if ((pf = fopen (cp, "w+")) == NULL)
adios (cp, "unable to write");
(void) chmod (cp, m_gmprot ());
start = stop = 0L;
if (pop_retr (i, pop_action) == NOTOK)
adios (NULLCP, "%s", response);
if (fflush (pf))
adios (cp, "write error on");
(void) fseek (pf, 0L, 0);
}
switch (p = scan (pf, msgnum, 0, nfs, width,
file ? 0 : msgnum == mp -> hghmsg + 1 && chgflag,
1, /* check UNSEEN? */
0, stop - start, noisy)) {
case SCNEOF:
printf ("%*d empty\n", DMAXFOLDER, msgnum);
break;
case SCNFAT:
trnflag = 0;
noisy++;
/* advise (cp, "unable to read"); already advised */
/* fall thru */
case SCNERR:
case SCNNUM:
break;
case SCNMSG:
case SCNENC:
default:
if (aud)
fputs (scanl, aud);
#ifdef MHE
if (mhe)
fputs (scanl, mhe);
#endif /* MHE */
if (noisy)
(void) fflush (stdout);
if (!file) {
mp -> msgstats[msgnum] = EXISTS;
#ifdef TMA
if (p == SCNENC) {
if (mp -> lowsel == 0 || msgnum < mp -> lowsel)
mp -> lowsel = msgnum;
if (mp -> hghsel == 0 || msgnum > mp -> hghsel)
mp -> hghsel = msgnum;
mp -> numsel++;
mp -> msgstats[msgnum] |= SELECTED;
}
#endif /* TMA */
mp -> msgstats[msgnum] |= UNSEEN;
mp -> msgflags |= SEQMOD;
}
break;
}
if (file) {
(void) fseek (pf, stop, 0);
(void) fwrite (mmdlm2, 1, strlen (mmdlm2), pf);
if (fflush (pf) || ferror (pf)) {
int e = errno;
(void) pop_quit ();
errno = e;
adios (file, "write error on");
}
(void) map_write (file, pd, 0, 0L, start, stop, pos, size,
noisy);
}
else {
if (ferror(pf) || fclose (pf)) {
int e = errno;
(void) unlink (cp);
(void) pop_quit ();
errno = e;
adios (cp, "write error on");
}
free (cp);
}
if (trnflag && pop_dele (i) == NOTOK)
adios (NULLCP, "%s", response);
}
if (pop_quit () == NOTOK)
adios (NULLCP, "%s", response);
if (file) {
(void) mbx_close (file, pd);
pd = NOTOK;
}
}
else {
#endif /* POP */
/* */
m_unknown (in); /* the MAGIC invocation... */
hghnum = msgnum = mp -> hghmsg;
for (i = 0;;) {
if (msgnum >= mp -> hghoff)
if ((mp = m_remsg (mp, 0, mp -> hghoff + MAXFOLDER)) == NULL) {
advise (NULLCP, "unable to allocate folder storage");
i = NOTOK;
break;
}
switch (i = scan (in, msgnum + 1, msgnum + 1, nfs, width,
msgnum == hghnum && chgflag,
1, /* check UNSEEN? */
0,
0L,
noisy)) {
case SCNFAT:
case SCNEOF:
break;
case SCNERR:
if (aud)
fputs ("inc aborted!\n", aud);
advise (NULLCP, "aborted!"); /* doesn't clean up locks! */
break;
case SCNNUM:
advise (NULLCP,
"more than %d messages in folder %s, %s not zero'd",
MAXFOLDER, folder, newmail);
break;
default:
advise (NULLCP, "scan() botch (%d)", i);
break;
case SCNMSG:
case SCNENC:
if (aud)
fputs (scanl, aud);
#ifdef MHE
if (mhe)
fputs (scanl, mhe);
#endif /* MHE */
if (noisy)
(void) fflush (stdout);
msgnum++, mp -> hghmsg++;
mp -> msgstats[msgnum] = EXISTS;
#ifdef TMA
if (i == SCNENC) {
if (mp -> lowsel == 0 || mp -> lowsel > msgnum)
mp -> lowsel = msgnum;
if (mp -> hghsel == 0 || mp -> hghsel < msgnum)
mp -> hghsel = msgnum;
mp -> numsel++;
mp -> msgstats[msgnum] |= SELECTED;
}
#endif /* TMA */
mp -> msgstats[msgnum] |= UNSEEN;
mp -> msgflags |= SEQMOD;
continue;
}
break;
}
#ifdef POP
}
#endif /* POP */
#ifndef POP
if (i < 0) { /* error } */
#else
if (p < 0) { /* error */
#endif
if (locked)
#ifdef MAILGROUP
{
setgid(return_gid); /* Be sure we can unlock mail file */
#endif /* MAILGROUP */
(void) lkfclose (in, newmail);
#ifdef MAILGROUP
setgid(getgid()); /* And then return us to normal privileges */
}
#endif /* MAILGROUP */
else
(void) fclose (in);
adios (NULLCP, "failed");
}
if (aud)
(void) fclose (aud);
#ifdef MHE
if (mhe)
(void) fclose (mhe);
#endif /* MHE */
if (noisy)
(void) fflush (stdout);
#ifdef POP
if (host && file)
done (0);
#endif /* POP */
/* */
#ifdef POP
if (host == NULL)
#endif /* POP */
if (trnflag) {
if (stat (newmail, &st) != NOTOK && s1.st_mtime != st.st_mtime)
advise (NULLCP, "new messages have arrived!\007");
else {
if ((i = creat (newmail, 0600)) != NOTOK)
(void) close (i);
else
admonish (newmail, "error zero'ing");
(void) unlink (map_name (newmail));
}
}
else
if (noisy)
printf ("%s not zero'd\n", newmail);
if (msgnum == hghnum)
admonish (NULLCP, "no messages incorporated");
else {
m_replace (pfolder, folder);
if (chgflag)
mp -> curmsg = hghnum + 1;
mp -> hghmsg = msgnum;
if (mp -> lowmsg == 0)
mp -> lowmsg = 1;
if (chgflag) /* sigh... */
m_setcur (mp, mp -> curmsg);
}
#ifdef POP
if (host == NULL)
#endif /* POP */
if (locked)
#ifdef MAILGROUP
{
setgid(return_gid); /* Be sure we can unlock mail file */
#endif /* MAILGROUP */
(void) lkfclose (in, newmail);
#ifdef MAILGROUP
setgid(getgid()); /* And then return us to normal privileges */
}
#endif /* MAILGROUP */
else
(void) fclose (in);
m_setvis (mp, 0);
m_sync (mp);
m_update ();
#ifdef TMA
if (decflag && mp -> numsel > 0) {
if (noisy) {
printf ("\nIncorporating encrypted mail into %s...\n\n", folder);
(void) fflush (stdout);
}
tmastart (0);
for (msgnum = mp -> lowsel; msgnum <= mp -> hghsel; msgnum++)
if (mp -> msgstats[msgnum] & SELECTED && decipher (msgnum) == OK) {
if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
admonish (cp, "unable to open message");
free (cp);
continue;
}
switch (scan (in, msgnum, 0, nfs, width,
msgnum == mp -> curmsg,
1, /* check UNSEEN? */
0,
fstat (fileno (in), &st) != NOTOK ? (long) st.st_size
: 0L,
noisy)) {
case SCNEOF:
printf ("%*d empty\n", DMAXFOLDER, msgnum);
break;
default:
break;
}
(void) fclose (in);
free (cp);
}
tmastop ();
if (noisy)
(void) fflush (stdout);
}
#endif /* TMA */
done (0);
}
/* */
#ifdef POP
void done (status)
int status;
{
if (file && pd != NOTOK)
(void) mbx_close (file, pd);
exit (status);
}
#endif /* POP */
/* */
#ifdef MF
get_uucp_mail () {
int child_id;
char buffer[BUFSIZ];
struct stat st;
(void) sprintf (buffer, "%s/%s", UUCPDIR, UUCPFIL);
if (stat (buffer, &st) == NOTOK || st.st_size == 0)
return;
switch (child_id = vfork ()) {
case NOTOK:
admonish ("fork", "unable to");
break;
case OK:
execlp (umincproc, r1bindex (umincproc, '/'), NULLCP);
fprintf (stderr, "unable to exec ");
perror (umincproc);
_exit (-1);
default:
(void) pidXwait (child_id, umincproc);
break;
}
}
#endif /* MF */
/* */
#ifdef POP
static int pop_action (s)
register char *s;
{
fprintf (pf, "%s\n", s);
stop += strlen (s) + 1;
}
static int pop_pack (s)
register char *s;
{
register int j;
char buffer[BUFSIZ];
(void) sprintf (buffer, "%s\n", s);
for (j = 0; (j = stringdex (mmdlm1, buffer)) >= 0; buffer[j]++)
continue;
for (j = 0; (j = stringdex (mmdlm2, buffer)) >= 0; buffer[j]++)
continue;
fputs (buffer, pf);
size += strlen (buffer) + 1;
}
static int map_count () {
int md;
char *cp;
struct drop d;
struct stat st;
if (stat (file, &st) == NOTOK)
return 0;
if ((md = open (cp = map_name (file), 0)) == NOTOK
|| map_chk (cp, md, &d, (long) st.st_size, 1)) {
if (md != NOTOK)
(void) close (md);
return 0;
}
(void) close (md);
return (d.d_id);
}
#endif /* POP */