whatnowsbr.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

{
    register int    child_id,
                    i,
                    vecp;
    char *cp,
	 *sp,
	 *vec[MAXARGS];

    if (strcmp (sp = r1bindex (sendproc, '/'), "send") == 0) {
	cp = invo_name;
	sendit (invo_name = sp, arg, file, pushsw);
	invo_name = cp;
	return;
    }

    m_update ();
    (void) fflush (stdout);

    for (i = 0; (child_id = vfork ()) == NOTOK && i < 5; i++)
	sleep (5);
    switch (child_id) {
	case NOTOK: 
	    advise (NULLCP, "unable to fork, so sending directly...");
	case OK: 
	    vecp = 0;
	    vec[vecp++] = invo_name;
	    if (pushsw)
		vec[vecp++] = "-push";
	    if (arg)
		while (*arg)
		    vec[vecp++] = *arg++;
	    vec[vecp++] = file;
	    vec[vecp] = NULL;

	    execvp (sendproc, vec);
	    fprintf (stderr, "unable to exec ");
	    perror (sendproc);
	    _exit (-1);

	default: 
	    if (pidwait (child_id, OK) == 0)
		done (0);
	    return;
    }
}

/*  */

static struct swit  sendswitches[] = {
#define	ALIASW	0
    "alias aliasfile", 0,

#define	DEBUGSW	1
    "debug", -5,

#define	ENCRSW	2
    "encrypt",
#ifndef	TMA
    -7,
#else	TMA
    0,
#endif	TMA
#define	NENCRSW	3
    "noencrypt",
#ifndef	TMA
    -9,
#else	TMA
    0,
#endif	TMA

#define	FILTSW	4
    "filter filterfile", 0,
#define	NFILTSW	5
    "nofilter", 0,

#define	FRMTSW	6
    "format", 0,
#define	NFRMTSW	7
    "noformat", 0,

#define	FORWSW	8
    "forward", 0,
#define	NFORWSW	9
    "noforward", 0,

#define	MSGDSW	10
    "msgid", 0,
#define	NMSGDSW	11
    "nomsgid", 0,

#define	SPSHSW	12
    "push", 0,
#define	NSPSHSW	13
    "nopush", 0,

#define	UNIQSW	14
    "unique", -6,
#define	NUNIQSW	15
    "nounique", -8,

#define	VERBSW	16
    "verbose", 0,
#define	NVERBSW	17
    "noverbose", 0,

#define	WATCSW	18
    "watch", 0,
#define	NWATCSW	19
    "nowatch", 0,

#define	WIDTHSW	20
    "width columns", 0,

#define	SHELPSW	21
    "help", 4,

#define	MAILSW	22
    "mail", -4,
#define	SAMLSW	23
    "saml", -4,
#define	SSNDSW	24
    "send", -4,
#define	SOMLSW	25
    "soml", -4,

#define	CLIESW	26
    "client host", -6,
#define	SERVSW	27
    "server host", -6,
#define	SNOOPSW	28
    "snoop", -5,

#define SDRFSW 29
    "draftfolder +folder", -6,
#define SDRMSW 30
    "draftmessage msg", -6,
#define SNDRFSW 31
    "nodraftfolder", -3,

#ifdef X400
#define MTSSW   32
    "mts smtp/x400", 0,

#define NOTESW  33
    "note", 0,
#endif X400

    NULL, NULL
};

/*  */

extern int debugsw;		/* from sendsbr.c */
extern int forwsw;
extern int inplace;
extern int pushsw;
extern int unique;

extern char *altmsg;		/*  .. */
extern char *annotext;
extern char *distfile;

/*  */

static  sendit (sp, arg, file, pushed)
register char  *sp,
	      **arg,
               *file;
int     pushed;
{
#ifndef	lint
    int	    distsw = 0;
#endif	not lint
    int	    vecp = 1;
    char   *cp,
            buf[100],
          **ap,
          **argp,
           *arguments[MAXARGS],
           *vec[MAXARGS];
    struct stat st;
#ifdef	UCI
    FILE   *fp;
#endif	UCI

    if (arg)
	(void) copyip (arg, vec);
    if ((cp = m_find (sp)) != NULL) {
	ap = brkstring (cp = getcpy (cp), " ", "\n");
	ap = copyip (ap, arguments);
    }
    else
	ap = arguments;
    if (arg)
	(void) copyip (vec, ap);
    argp = arguments;

    debugsw = 0, forwsw = 1, inplace = 0, unique = 0;
    altmsg = annotext = distfile = NULL;
    vec[vecp++] = "-library";
    vec[vecp++] = getcpy (m_maildir (""));

/*  */

    while (cp = *argp++) {
	if (*cp == '-')
	    switch (smatch (++cp, sendswitches)) {
		case AMBIGSW: 
		    ambigsw (cp, sendswitches);
		    return;
		case UNKWNSW: 
		    advise (NULLCP, "-%s unknown\n", cp);
		    return;
		case SHELPSW: 
		    (void) sprintf (buf, "%s [switches]", sp);
		    help (buf, sendswitches);
		    return;

		case SPSHSW: 
		    pushed++;
		    continue;
		case NSPSHSW: 
		    pushed = 0;
		    continue;

		case UNIQSW: 
		    unique++;
		    continue;
		case NUNIQSW: 
		    unique = 0;
		    continue;
		case FORWSW: 
		    forwsw++;
		    continue;
		case NFORWSW: 
		    forwsw = 0;
		    continue;

		case DEBUGSW: 
		    debugsw++;	/* fall */
		case NFILTSW: 
		case FRMTSW: 
		case NFRMTSW: 
		case MSGDSW: 
		case NMSGDSW: 
		case VERBSW: 
		case NVERBSW: 
		case WATCSW: 
		case NWATCSW: 
		case MAILSW: 
		case SAMLSW: 
		case SSNDSW: 
		case SOMLSW: 
		case ENCRSW: 
		case NENCRSW: 
		case SNOOPSW: 
#ifdef X400
                case NOTESW:
#endif X400
		    vec[vecp++] = --cp;
		    continue;

		case ALIASW: 
		case FILTSW: 
		case WIDTHSW: 
		case CLIESW: 
		case SERVSW: 
#ifdef X400
                case MTSSW:
#endif X400
		    vec[vecp++] = --cp;
		    if (!(cp = *argp++) || *cp == '-') {
			advise (NULLCP, "missing argument to %s", argp[-2]);
			return;
		    }
		    vec[vecp++] = cp;
		    continue;

		case SDRFSW: 
		case SDRMSW: 
		    if (!(cp = *argp++) || *cp == '-') {
			advise (NULLCP, "missing argument to %s", argp[-2]);
			return;
		    }
		case SNDRFSW: 
		    continue;
	    }
	advise (NULLCP, "usage: %s [switches]", sp);
	return;
    }
    if (cp = m_find ("Aliasfile")) {	/* allow Aliasfile: profile entry */
	vec[vecp++] = "-alias";
	vec[vecp++] = getcpy(cp);
    }

/*  */

#ifdef	TMA
    if ((cp = getenv ("KDS")) == NULL || *cp == NULL)
	if ((cp = m_find ("kdsproc")) && *cp)
	    (void) putenv ("KDS", cp);
    if ((cp = getenv ("TMADB")) == NULL || *cp == NULL)
	if ((cp = m_find ("tmadb")) && *cp)
	    (void) putenv ("TMADB", m_maildir (cp));
#endif	TMA

    if ((cp = getenv ("SIGNATURE")) == NULL || *cp == NULL)
	if ((cp = m_find ("signature")) && *cp)
	    (void) putenv ("SIGNATURE", cp);
#ifdef	UCI
	else {
	    (void) sprintf (buf, "%s/.signature", mypath);
	    if ((fp = fopen (buf, "r")) != NULL
		&& fgets (buf, sizeof buf, fp) != NULL) {
		    (void) fclose (fp);
		    if (cp = index (buf, '\n'))
			*cp = NULL;
		    (void) putenv ("SIGNATURE", buf);
	    }
	}
#endif	UCI

    if ((annotext = getenv ("mhannotate")) == NULL || *annotext == NULL)
	annotext = NULL;
    if ((altmsg = getenv ("mhaltmsg")) == NULL || *altmsg == NULL)
	altmsg = NULL;
    if (annotext && ((cp = getenv ("mhinplace")) != NULL && *cp != NULL))
	inplace = atoi (cp);

    if ((cp = getenv ("mhdist"))
	    && *cp
#ifndef	lint
	    && (distsw = atoi (cp))
#endif	not lint
	    && altmsg) {
	vec[vecp++] = "-dist";
	distfile = getcpy (m_scratch (altmsg, invo_name));
	if (link (altmsg, distfile) == NOTOK)
	    adios (distfile, "unable to link %s to", altmsg);
    }
    else
	distfile = NULL;

    if (altmsg == NULL || stat (altmsg, &st) == NOTOK)
	st.st_mtime = 0, st.st_dev = 0, st.st_ino = 0;
    if (pushsw = pushed)
	push ();

    vec[0] = r1bindex (postproc, '/');
    closefds (3);

    if (sendsbr (vec, vecp, file, &st) == OK)
	done (0);
}

/*    WHOM */

static	int whomfile (arg, file)
register char **arg,
               *file;
{
    int     pid;
    register int    vecp;
    char   *vec[MAXARGS];
#ifdef	WP
    char   *cp,
	    draft[BUFSIZ],
	    backup[BUFSIZ];
#endif

#ifdef	WP
    (void) strcpy (draft, m_scratch (file, invo_name));
#endif

    m_update ();
    (void) fflush (stdout);

    switch (pid = vfork ()) {
	case NOTOK: 
	    advise ("fork", "unable to");
	    return 1;

	case OK: 
	    vecp = 0;
	    vec[vecp++] = r1bindex (whomproc, '/');
	    vec[vecp++] = file;
	    if (arg)
		while (*arg)
		    vec[vecp++] = *arg++;
#ifdef	WP
	    vec[vecp++] = "-fill-in";
	    vec[vecp++] = draft;
#endif
	    vec[vecp] = NULL;

	    execvp (whomproc, vec);
	    fprintf (stderr, "unable to exec ");
	    perror (whomproc);
	    _exit (-1);		/* NOTREACHED */

	default: 
#ifndef	WP
	    return (pidwait (pid, NOTOK) & 0377 ? 1 : 0);
#else
	    if (pidwait (pid, NOTOK)) {
		(void) unlink (draft);
		return 1;
	    }
	    break;
#endif
    }

#ifdef	WP
    if (rename (file, cp = m_backup (file)) == NOTOK) {
	advise (cp, "unable to rename %s to", file);
	(void) unlink (draft);
	return 1;
    }
    if (rename (draft, file) == NOTOK) {
	advise (file, "unable to rename %s to ", draft);
	return 1;
    }

    return 0;
#endif
}