common/irs/irp_ng.c

	irp_ng.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * Copyright 1999-2002 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Copyright (c) 1996, 1998 by Internet Software Consortium.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */

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

#if !defined(LINT) && !defined(CODECENTER)
static const char rcsid[] = "$Id: irp_ng.c,v 8.3 2001/05/29 05:49:00 marka Exp $";
#endif

/* Imports */

#include "port_before.h"

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <syslog.h>

#include <irs.h>
#include <irp.h>
#include <isc/memcluster.h>
#include <isc/irpmarshall.h>

#include "irs_p.h"
#include "irp_p.h"

#include "port_after.h"

/* Definitions */

struct pvt {
    struct irp_p           *girpdata;
    int         warned;
};


/* Forward */

static void     ng_rewind(struct irs_ng *, const char*);
static void     ng_close(struct irs_ng *);
static int      ng_next(struct irs_ng *, const char **, const char **,
                const char **);
static int      ng_test(struct irs_ng *, const char *,
                const char *, const char *,
                const char *);
static void     ng_minimize(struct irs_ng *);


/* Public */


/*
 * struct irs_ng * irs_irp_ng(struct irs_acc *this)
 *
 * Notes:
 *
 *  Intialize the irp netgroup module.
 *
 */

struct irs_ng *
irs_irp_ng(struct irs_acc *this) {
    struct irs_ng *ng;
    struct pvt *pvt;

    if (!(ng = memget(sizeof *ng))) {
        errno = ENOMEM;
        return (NULL);
    }
    memset(ng, 0x5e, sizeof *ng);

    if (!(pvt = memget(sizeof *pvt))) {
        memput(ng, sizeof *ng);
        errno = ENOMEM;
        return (NULL);
    }
    memset(pvt, 0, sizeof *pvt);
    pvt->girpdata = this->private;

    ng->private = pvt;
    ng->close = ng_close;
    ng->next = ng_next;
    ng->test = ng_test;
    ng->rewind = ng_rewind;
    ng->minimize = ng_minimize;
    return (ng);
}

/* Methods */


/*
 * void ng_close(struct irs_ng *this)
 *
 */

static void
ng_close(struct irs_ng *this) {
    struct pvt *pvt = (struct pvt *)this->private;

    ng_minimize(this);

    memput(pvt, sizeof *pvt);
    memput(this, sizeof *this);
}


/*
 * void ng_rewind(struct irs_ng *this, const char *group)
 *
 *
 */

static void
ng_rewind(struct irs_ng *this, const char *group) {
    struct pvt *pvt = (struct pvt *)this->private;
    char text[256];
    int code;

    if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
        return;
    }

    if (irs_irp_send_command(pvt->girpdata,
                 "setnetgrent %s", group) != 0) {
        return;
    }

    code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
    if (code != IRPD_GETNETGR_SETOK) {
        if (irp_log_errors) {
            syslog(LOG_WARNING, "setnetgrent(%s) failed: %s",
                   group, text);
        }
    }

    return;
}


/*
 * int ng_next(struct irs_ng *this, const char **host, const char **user,
 *         const char **domain)
 *
 * Notes:
 *
 *  Get the next netgroup item from the cache.
 *
 */

static int
ng_next(struct irs_ng *this, const char **host, const char **user,
        const char **domain)
{
    struct pvt *pvt = (struct pvt *)this->private;
    int code;
    char *body = NULL;
    size_t bodylen;
    int rval = 0;
    char text[256];

    if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
        return (0);
    }

    if (irs_irp_send_command(pvt->girpdata, "getnetgrent") != 0)
        return (0);

    if (irs_irp_get_full_response(pvt->girpdata, &code,
                      text, sizeof text,
                      &body, &bodylen) != 0) {
        return (0);
    }

    if (code == IRPD_GETNETGR_OK) {
        if (irp_unmarshall_ng(host, user, domain, body) == 0) {
            rval = 1;
        }
    }

    if (body != NULL) {
        memput(body, bodylen);
    }

    return (rval);
}


/*
 * int ng_test(struct irs_ng *this, const char *name, const char *host,
 *      const char *user, const char *domain)
 *
 * Notes:
 *
 *  Search for a match in a netgroup.
 *
 */

static int
ng_test(struct irs_ng *this, const char *name,
    const char *host, const char *user, const char *domain)
{
    struct pvt *pvt = (struct pvt *)this->private;
    char *body = NULL;
    size_t bodylen = 0;
    int code;
    char text[256];
    int rval = 0;

    UNUSED(name);

    if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
        return (0);
    }

    if (irp_marshall_ng(host, user, domain, &body, &bodylen) != 0) {
        return (0);
    }

    if (irs_irp_send_command(pvt->girpdata, "innetgr %s", body) == 0) {
        memput(body, bodylen);

        code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
        if (code == IRPD_GETNETGR_MATCHES) {
            rval = 1;
        }
    }

    return (rval);
}


/*
 * void ng_minimize(struct irs_ng *this)
 *
 */

static void
ng_minimize(struct irs_ng *this) {
    struct pvt *pvt = (struct pvt *)this->private;

    irs_irp_disconnect(pvt->girpdata);
}


/* Private */