source: trunk/third/nmh/uip/whom.c @ 12455

/*
 * whom.c -- report to whom a message would be sent
 *
 * $Id: whom.c,v 1.1.1.1 1999-02-07 18:14:17 danw Exp $
 */

#include <h/mh.h>
#include <h/signals.h>
#include <signal.h>

static struct swit switches[] = {
#define ALIASW              0
    { "alias aliasfile", 0 },
#define CHKSW               1
    { "check", 0 },
#define NOCHKSW             2
    { "nocheck", 0 },
#define DRAFTSW             3
    { "draft", 0 },
#define DFOLDSW             4
    { "draftfolder +folder", 6 },
#define DMSGSW              5
    { "draftmessage msg", 6 },
#define NDFLDSW             6
    { "nodraftfolder", 0 },
#define VERSIONSW           7
    { "version", 0 },
#define HELPSW              8
    { "help", 4 },
#define CLIESW              9
    { "client host", -6 },
#define SERVSW             10
    { "server host", -6 },
#define SNOOPSW            11
    { "snoop", -5 },
    { NULL, 0 }
};


int
main (int argc, char **argv)
{
    pid_t child_id;
    int i, status, isdf = 0;
    int distsw = 0, vecp = 0;
    char *cp, *dfolder = NULL, *dmsg = NULL;
    char *msg = NULL, **ap, **argp, backup[BUFSIZ];
    char buf[BUFSIZ], **arguments, *vec[MAXARGS];

#ifdef LOCALE
    setlocale(LC_ALL, "");
#endif
    invo_name = r1bindex (argv[0], '/');

    /* read user profile/context */
    context_read();

    arguments = getarguments (invo_name, argc, argv, 1);
    argp = arguments;

    vec[vecp++] = invo_name;
    vec[vecp++] = "-whom";
    vec[vecp++] = "-library";
    vec[vecp++] = getcpy (m_maildir (""));

    while ((cp = *argp++)) {
        if (*cp == '-') {
            switch (smatch (++cp, switches)) {
                case AMBIGSW: 
                    ambigsw (cp, switches);
                    done (1);
                case UNKWNSW: 
                    adios (NULL, "-%s unknown", cp);

                case HELPSW: 
                    snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
                    print_help (buf, switches, 1);
                    done (1);
                case VERSIONSW:
                    print_version(invo_name);
                    done (1);

                case CHKSW: 
                case NOCHKSW: 
                case SNOOPSW:
                    vec[vecp++] = --cp;
                    continue;

                case DRAFTSW:
                    msg = draft;
                    continue;

                case DFOLDSW: 
                    if (dfolder)
                        adios (NULL, "only one draft folder at a time!");
                    if (!(cp = *argp++) || *cp == '-')
                        adios (NULL, "missing argument to %s", argp[-2]);
                    dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
                            *cp != '@' ? TFOLDER : TSUBCWF);
                    continue;
                case DMSGSW: 
                    if (dmsg)
                        adios (NULL, "only one draft message at a time!");
                    if (!(dmsg = *argp++) || *dmsg == '-')
                        adios (NULL, "missing argument to %s", argp[-2]);
                    continue;
                case NDFLDSW: 
                    dfolder = NULL;
                    isdf = NOTOK;
                    continue;

                case ALIASW: 
                case CLIESW: 
                case SERVSW: 
                    vec[vecp++] = --cp;
                    if (!(cp = *argp++) || *cp == '-')
                        adios (NULL, "missing argument to %s", argp[-2]);
                    vec[vecp++] = cp;
                    continue;
            }
        }
        if (msg)
            adios (NULL, "only one draft at a time!");
        else
            vec[vecp++] = msg = cp;
    }

    /* allow Aliasfile: profile entry */
    if ((cp = context_find ("Aliasfile"))) {
        char *dp = NULL;

        for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
            vec[vecp++] = "-alias";
            vec[vecp++] = *ap;
        }
    }

    if (msg == NULL) {
#ifdef  WHATNOW
        if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
#endif  /* WHATNOW */
            cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
        msg = vec[vecp++] = cp;
    }
    if ((cp = getenv ("mhdist"))
            && *cp
            && (distsw = atoi (cp))
            && (cp = getenv ("mhaltmsg"))
            && *cp) {
        if (distout (msg, cp, backup) == NOTOK)
            done (1);
        vec[vecp++] = "-dist";
        distsw++;
    }
    vec[vecp] = NULL;

    closefds (3);

    if (distsw) {
        for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
            sleep (5);
    }

    switch (distsw ? child_id : OK) {
        case NOTOK:
            advise (NULL, "unable to fork, so checking directly...");
        case OK:
            execvp (postproc, vec);
            fprintf (stderr, "unable to exec ");
            perror (postproc);
            _exit (-1);

        default:
            SIGNAL (SIGHUP, SIG_IGN);
            SIGNAL (SIGINT, SIG_IGN);
            SIGNAL (SIGQUIT, SIG_IGN);
            SIGNAL (SIGTERM, SIG_IGN);

            status = pidwait(child_id, OK);

            unlink (msg);
            if (rename (backup, msg) == NOTOK)
                adios (msg, "unable to rename %s to", backup);
            done (status);
    }

    exit (-1);  /* NOT REACHED */
}