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/*

 * QEMU VNC display driver: SASL auth protocol

 *

 * Copyright (C) 2009 Red Hat, Inc

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#ifndef __QEMU_VNC_AUTH_SASL_H__

#define __QEMU_VNC_AUTH_SASL_H__

#include <sasl/sasl.h>

typedef struct VncStateSASL VncStateSASL;

typedef struct VncDisplaySASL VncDisplaySASL;

#include "acl.h"

struct VncStateSASL {

    sasl_conn_t *conn;

    /* If we want to negotiate an SSF layer with client */

    int wantSSF :1;

    /* If we are now running the SSF layer */

    int runSSF :1;

    /*

     * If this is non-zero, then wait for that many bytes

     * to be written plain, before switching to SSF encoding

     * This allows the VNC auth result to finish being

     * written in plain.

     */

    unsigned int waitWriteSSF;

    /*

     * Buffering encoded data to allow more clear data

     * to be stuffed onto the output buffer

     */

    const uint8_t *encoded;

    unsigned int encodedLength;

    unsigned int encodedOffset;

    char *username;

    char *mechlist;

};

struct VncDisplaySASL {

    qemu_acl *acl;

};

void vnc_sasl_client_cleanup(VncState *vs);

long vnc_client_read_sasl(VncState *vs);

long vnc_client_write_sasl(VncState *vs);

void start_auth_sasl(VncState *vs);

#endif /* __QEMU_VNC_AUTH_SASL_H__ */