util_set.c   [plain text]

/* -*- mode: c; indent-tabs-mode: nil -*- */
/*
 * Copyright 1995 by OpenVision Technologies, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appears in all copies and
 * that both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of OpenVision not be used
 * in advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission. OpenVision makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, 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.
 */

/*
 * $Id: util_set.c 20876 2008-10-15 21:58:43Z tlyu $
 */

#include "gssapiP_generic.h"

struct _g_set_elt {
    void *key;
    void *value;
    struct _g_set_elt *next;
};

int g_set_init(g_set_elt *s)
{
    *s = NULL;

    return(0);
}

#if 0
int g_set_destroy(g_set_elt *s)
{
    g_set next;

    while (*s) {
        next = (*s)->next;
        free(*s);
        *s = next;
    }

    return(0);
}
#endif

int g_set_entry_add(g_set_elt *s, void *key, void *value)
{
    g_set_elt first;

    if ((first = (struct _g_set_elt *) malloc(sizeof(struct _g_set_elt))) == NULL)
        return(ENOMEM);

    first->key = key;
    first->value = value;
    first->next = *s;

    *s = first;

    return(0);
}

int g_set_entry_delete(g_set_elt *s, void *key)
{
    g_set_elt *p;

    for (p=s; *p; p = &((*p)->next)) {
        if ((*p)->key == key) {
            g_set_elt next = (*p)->next;
            free(*p);
            *p = next;

            return(0);
        }
    }

    return(-1);
}

int g_set_entry_get(g_set_elt *s, void *key, void **value)
{
    g_set_elt p;

    for (p = *s; p; p = p->next) {
        if (p->key == key) {
            *value = p->value;

            return(0);
        }
    }

    *value = NULL;

    return(-1);
}