/* $Id: faketoken.c 4022 2008-03-31 06:11:07Z rra $
 *
 * Fake token_send and token_recv functions for testing.
 *
 * Written by Russ Allbery <rra@stanford.edu>
 * Copyright 2006 Board of Trustees, Leland Stanford Jr. University
 *
 * See LICENSE for licensing terms.
 */

#include <config.h>
#include <portable/system.h>

#include <util/util.h>

enum token_status fake_token_send(int, int, gss_buffer_t);
enum token_status fake_token_recv(int, int *, gss_buffer_t, size_t);

/*
 * The token and flags are actually read from or written to these variables.
 */
char send_buffer[2048];
char recv_buffer[2048];
size_t send_length;
size_t recv_length;
int send_flags;
int recv_flags;


/*
 * Accept a token write request and store it into the buffer.
 */
enum token_status
fake_token_send(int fd UNUSED, int flags, gss_buffer_t tok)
{
    if (tok->length > sizeof(send_buffer))
        return TOKEN_FAIL_SYSTEM;
    send_flags = flags;
    send_length = tok->length;
    memcpy(send_buffer, tok->value, tok->length);
    return TOKEN_OK;
}


/*
 * Receive a token from the stored buffer and return it.
 */
enum token_status
fake_token_recv(int fd UNUSED, int *flags, gss_buffer_t tok, size_t max)
{
    if (recv_length > max)
        return TOKEN_FAIL_LARGE;
    tok->value = malloc(recv_length);
    if (tok->value == NULL)
        return TOKEN_FAIL_SYSTEM;
    memcpy(tok->value, recv_buffer, recv_length);
    tok->length = recv_length;
    *flags = recv_flags;
    return TOKEN_OK;
}