cmd/refer/glue3.c

	glue3.c revision 11a8fa6cb17403e630122ac19b39a323c6e64142
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved. The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"


#include "refer..c"
#include <string.h>
#define move(x, y) close(y); dup(x); close(x);

extern void err();
extern long findline();
extern void huntmain();
extern void restodir();

static int callhunt(char *, char *, char *, int);
static int dodeliv(char *, char *, char *, int);

int
corout(char *in, char *out, char *rprog, char *arg, int outlen)
{
    int pipev[2], fr1, fr2, fw1, fw2, n;

#if D1
    fprintf(stderr, "in corout, rprog /%s/ in /%s/\n",
        rprog ? rprog : "", strlen(in) ? in : "");
#endif

    if (strcmp(rprog, "hunt") == 0)
        return (callhunt(in, out, arg, outlen));
    if (strcmp(rprog, "deliv") == 0)
        return (dodeliv(in, out, arg, outlen));
    pipe(pipev);
    fr1 = pipev[0];
    fw1 = pipev[1];
    pipe(pipev);
    fr2 = pipev[0];
    fw2 = pipev[1];
    if (fork() == 0) {
        close(fw1);
        close(fr2);
        move(fr1, 0);
        move(fw2, 1);
        if (rprog[0] != '/')
            chdir("/usr/lib/refer");
        execl(rprog, "deliv", arg, 0);
        err(gettext("Can't run %s"), rprog);
    }
    close(fw2);
    close(fr1);
    if (strlen(in) > 0)
        write(fw1, in, strlen(in));
    close(fw1);
    wait(0);
    n = read(fr2, out, outlen);
    out[n] = 0;
    close(fr2);
    return (0);
}

#define ALEN 50

static int
callhunt(char *in, char *out, char *arg, int outlen)
{
    char *argv[20], abuff[ALEN];
    extern int typeindex;
    int argc;
    extern char one[];
    extern int onelen;
    argv[0] = "hunt";
    argv[1] = "-i";
    argv[2] = in;
    argv[3] = "-t";
    argv[4] = out;
    argv[5] = (char *)outlen;
    argv[6] = "-T";
    argv[7] = "-F1";
    argv[8] = "-o";
    argv[9] = one;
    argv[10] = (char *)onelen;
    argv[11] = abuff;
    strcpy(abuff, arg);
    if (strlen(abuff) > ALEN)
        err("abuff not big enough %d", strlen(abuff));
    argc = 6;
    huntmain(argc, argv);
    return (0);
}

static int
dodeliv(char *in, char *out, char *arg, int outlen)
{
    char *mout;
    int mlen;
#if D1
    fprintf(stderr, "in dodeliv, arg /%s/\n", arg?arg:"");
#endif
    if (arg && arg[0])
        chdir(arg);

    mlen = findline(in, &mout, outlen, 0L);

    if (mlen > 0) {
        strncpy(out, mout, outlen);
        free(mout);
    }
    restodir();
    return (0);
}