/* inc.c - incorporate messages from a maildrop into a folder */

#include "../h/mh.h"
#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>

/*  */

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",
	-7,
#define	NDECRSW	5
    "nodecrypt",
	-9,

#define	MSW	6
    "file name", 0,

#define	FORMSW	7
    "form formatfile", 0,
#define	FMTSW	8
    "format string", 5,

#define	HOSTSW	9
    "host host",
	-4,
#define	USERSW	10
    "user user",
	-4,
#define	PACKSW	11
    "pack file",
	-4,
#define	NPACKSW	12
    "nopack",
	-6,
#define	RPOPSW	13
    "rpop",
#ifndef	RPOP
	-4,
#else	RPOP
	0,
#endif	RPOP
#define	NRPOPSW	14
    "norpop",
#ifndef	RPOP
	-6,
#else	RPOP
	0,
#endif	RPOP

#define	SILSW	15
    "silent", 0,
#define	NSILSW	16
    "nosilent", 0,

#define	TRNCSW	17
    "truncate", 0,
#define	NTRNCSW	18
    "notruncate", 0,

#define	UUCPSW	19
    "uucp",
#ifndef	MF
	-4,
#else	MF
	0,
#endif	MF
#define	NUUCPSW	20
    "nouucp",
#ifndef	MF
	-6,
#else	MF
	0,
#endif	MF

#define	WIDSW	21
    "width columns", 0,

#define	HELPSW	22
    "help", 4,

    NULL, NULL
};

/*  */

extern int  errno;
extern struct msgs *fmt_current_folder;


/*  * /

/* ARGSUSED */

main(argc, argv)
	int argc;
	char *argv[];
{
    int     chgflag = 1,
	    trnflag = 1,
	    decflag = 1,
            noisy = 1,
	    width = 0,
	    uucp = 1,
	    locked = 0,
	    rpop = 1,
            i,
	    hghnum,
            msgnum;
    char   *cp,
           *maildir,
           *folder = NULL,
	   *form = NULL,
	   *format = NULL,
           *audfile = NULL,
           *from = NULL,
	   *host = NULL,
	   *user = NULL,
           *newmail,
            buf[100],
          **ap,
          **argp,
           *nfs,
           *arguments[MAXARGS];
    struct msgs *mp;
    struct stat st,
                s1;
    FILE *in, *aud = NULL;
#ifdef	MHE
    FILE *mhe = NULL;
#endif	MHE

    invo_name = r1bindex (argv[0], '/');
    mts_init (invo_name);
    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:
		    uucp++;
		    continue;
		case NUUCPSW:
		    uucp = 0;
		    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:
		    if (!(cp = *argp++) || *cp == '-')
			adios (NULLCP, "missing argument to %s", argp[-2]);
		    continue;
		case NPACKSW:
		    continue;
		case RPOPSW:
		    rpop++;
		    continue;
		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);
    }

/*  */

    if (from) {
	newmail = from;
	if (stat (newmail, &s1) == NOTOK || s1.st_size == 0)
	    adios (NULLCP, "no mail to incorporate");
    }
    else {
	if (((newmail = getenv ("MAILDROP")) && *newmail)
		|| ((newmail = m_find ("maildrop")) && *newmail))
	    newmail = m_mailpath (newmail);
	else {
	    newmail = concat (MAILDIR, "/", MAILFIL, NULLCP);
	}
	if (stat (newmail, &s1) == NOTOK || s1.st_size == 0)
	    adios (NULLCP, "no mail to incorporate");
    }

    if (!m_find ("path"))
	free (path ("./", TFOLDER));
    if (!folder)
	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);

    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);
	}
	if ((in = lkfopen (newmail, "r")) == NULL)
	    adios (NULLCP, "unable to lock and fopen %s", newmail);
	(void) fstat (fileno(in), &s1);
    }

    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 ());
	fprintf (aud, from ? "<<inc>> %s  -ms %s\n" : "<<inc>> %s\n",
		dtimenow (), from);
    }

#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);
    }

/*  */

    fmt_current_folder = mp;
    m_unknown (in);		/* the MAGIC invocation... */
    hghnum = msgnum = mp -> hghmsg;
    for (;;) {
	if (msgnum >= mp -> hghoff) {
	    if ((mp = m_remsg (mp, 0, mp -> hghoff + MAXFOLDER)) == NULL)
		adios (NULLCP, "unable to allocate folder storage");
            fmt_current_folder = mp;
	}
	mp->msgstats[msgnum+1] = 0;
	switch (i = scan(in, msgnum + 1, msgnum + 1, nfs, width,
	    msgnum == hghnum && chgflag, 0, 0L, noisy, aud)) {
	    case SCNEOF:
		break;

	    case SCNERR:
		if (aud)
		    fputs ("inc aborted!\n", aud);
		adios (NULLCP, "aborted!");

	    case SCNNUM:
		adios (NULLCP, "more than %d messages in folder %s, %s not zero'd",
			MAXFOLDER, folder, newmail);

	    default:
		adios (NULLCP, "scan() botch (%d)", i);

	    case SCNMSG:
	    case SCNENC:
#ifdef	MHE
		if (mhe)
		    fputs (scanl, mhe);
#endif	MHE
		if (noisy)
		    (void) fflush (stdout);

		++msgnum; ++mp->hghmsg;
		mp -> msgstats[msgnum] |= (EXISTS|UNSEEN);
		mp -> msgflags |= SEQMOD;
		continue;
	}
	break;
    }

    if (aud)
	(void) fclose (aud);
#ifdef	MHE
    if (mhe)
	(void) fclose (mhe);
#endif	MHE
    if (noisy)
	(void) fflush (stdout);

    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);
    }

    if (locked)
	(void) lkfclose (in, newmail);
    else
	(void) fclose (in);

    m_setvis (mp, 0);
    m_sync (mp);
    m_update ();
    done (0);
}