/* #pragma ident        "@(#)g_inquire_context.c        1.15    04/02/23 SMI" */

/*
 * Copyright 1996 by Sun Microsystems, 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 Sun Microsystems not be used
 * in advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission. Sun Microsystems makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL SUN MICROSYSTEMS 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.
 */

/*
 *  glue routine for gss_inquire_context
 */

#include "mglueP.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif

static OM_uint32
val_inq_ctx_args(
    OM_uint32 *minor_status,
    gss_ctx_id_t context_handle,
    gss_name_t *src_name,
    gss_name_t *targ_name,
    OM_uint32 *lifetime_rec,
    gss_OID *mech_type,
    OM_uint32 *ctx_flags,
    int *locally_initiated,
    int *opened)
{

    /* Initialize outputs. */

    if (minor_status != NULL)
        *minor_status = 0;

    if (src_name != NULL)
        *src_name = GSS_C_NO_NAME;

    if (targ_name != NULL)
        *targ_name = GSS_C_NO_NAME;

    if (mech_type != NULL)
        *mech_type = GSS_C_NO_OID;

    /* Validate arguments. */

    if (minor_status == NULL)
        return (GSS_S_CALL_INACCESSIBLE_WRITE);

    if (context_handle == GSS_C_NO_CONTEXT)
        return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);

    return (GSS_S_COMPLETE);
}


/* Last argument new for V2 */
OM_uint32 KRB5_CALLCONV
gss_inquire_context(
            OM_uint32 *minor_status,
            gss_ctx_id_t context_handle,
            gss_name_t *src_name,
            gss_name_t *targ_name,
            OM_uint32 *lifetime_rec,
            gss_OID *mech_type,
            OM_uint32 *ctx_flags,
            int *locally_initiated,
            int *opened)
{
    gss_union_ctx_id_t  ctx;
    gss_mechanism       mech;
    OM_uint32           status, temp_minor;
    gss_OID             actual_mech;
    gss_name_t localTargName = NULL, localSourceName = NULL;

    status = val_inq_ctx_args(minor_status,
                              context_handle,
                              src_name, targ_name,
                              lifetime_rec,
                              mech_type, ctx_flags,
                              locally_initiated, opened);
    if (status != GSS_S_COMPLETE)
        return (status);

    /*
     * select the approprate underlying mechanism routine and
     * call it.
     */

    ctx = (gss_union_ctx_id_t) context_handle;
    if (ctx->internal_ctx_id == GSS_C_NO_CONTEXT)
        return (GSS_S_NO_CONTEXT);
    mech = gssint_get_mechanism (ctx->mech_type);

    if (!mech || !mech->gss_inquire_context || !mech->gss_display_name ||
        !mech->gss_release_name) {
        return (GSS_S_UNAVAILABLE);
    }

    status = mech->gss_inquire_context(
                        minor_status,
                        ctx->internal_ctx_id,
                        (src_name ? &localSourceName : NULL),
                        (targ_name ? &localTargName : NULL),
                        lifetime_rec,
                        &actual_mech,
                        ctx_flags,
                        locally_initiated,
                        opened);

    if (status != GSS_S_COMPLETE) {
        map_error(minor_status, mech);
        return status;
    }

    /* need to convert names */

    if (src_name) {
        if (localSourceName) {
            status = gssint_convert_name_to_union_name(minor_status, mech,
                                                      localSourceName, src_name);

            if (status != GSS_S_COMPLETE) {
                if (localTargName)
                    mech->gss_release_name(&temp_minor, &localTargName);
                return (status);
            }
        } else {
            *src_name = GSS_C_NO_NAME;
        }
    }

    if (targ_name) {
        if (localTargName) {
            status = gssint_convert_name_to_union_name(minor_status, mech,
                                                      localTargName, targ_name);

            if (status != GSS_S_COMPLETE) {
                if (src_name)
                    (void) gss_release_name(&temp_minor, src_name);

                return (status);
            }
        }
        else {
            *targ_name = GSS_C_NO_NAME;
        }
    }

    if (mech_type)
        *mech_type = gssint_get_public_oid(actual_mech);

    return(GSS_S_COMPLETE);
}