/*
 * Copyright (C) 2014 Glyptodon LLC
 *
 * 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 __GUAC_VNC_SETTINGS_H
#define __GUAC_VNC_SETTINGS_H

#include "config.h"

#include <stdbool.h>

/**
 * VNC-specific client data.
 */
typedef struct guac_vnc_settings {

    /**
     * The hostname of the VNC server (or repeater) to connect to.
     */
    char* hostname;

    /**
     * The port of the VNC server (or repeater) to connect to.
     */
    int port;

    /**
     * The password given in the arguments.
     */
    char* password;

    /**
     * Space-separated list of encodings to use within the VNC session.
     */
    char* encodings;

    /**
     * Whether the red and blue components of each color should be swapped.
     * This is mainly used for VNC servers that do not properly handle
     * colors.
     */
    bool swap_red_blue;

    /**
     * The color depth to request, in bits.
     */
    int color_depth;

    /**
     * Whether this connection is read-only, and user input should be dropped.
     */
    bool read_only;

#ifdef ENABLE_VNC_REPEATER
    /**
     * The VNC host to connect to, if using a repeater.
     */
    char* dest_host;

    /**
     * The VNC port to connect to, if using a repeater.
     */
    int dest_port;
#endif

#ifdef ENABLE_VNC_LISTEN
    /**
     * Whether not actually connecting to a VNC server, but rather listening
     * for a connection from the VNC server (reverse connection).
     */
    bool reverse_connect;

    /**
     * The maximum amount of time to wait when listening for connections, in
     * milliseconds.
     */
    int listen_timeout;
#endif

    /**
     * Whether the cursor should be rendered on the server (remote) or on the
     * client (local).
     */
    bool remote_cursor;
   
#ifdef ENABLE_PULSE
    /**
     * Whether audio is enabled.
     */
    bool audio_enabled;
 
    /**
     * The name of the PulseAudio server to connect to.
     */
    char* pa_servername;
#endif

    /**
     * The number of connection attempts to make before giving up.
     */
    int retries;

    /**
     * The encoding to use for clipboard data sent to the VNC server, or NULL
     * to use the encoding required by the VNC standard.
     */
    char* clipboard_encoding;

#ifdef ENABLE_COMMON_SSH
    /**
     * Whether SFTP should be enabled for the VNC connection.
     */
    bool enable_sftp;

    /**
     * The hostname of the SSH server to connect to for SFTP.
     */
    char* sftp_hostname;

    /**
     * The port of the SSH server to connect to for SFTP.
     */
    char* sftp_port;

    /**
     * The username to provide when authenticating with the SSH server for
     * SFTP.
     */
    char* sftp_username;

    /**
     * The password to provide when authenticating with the SSH server for
     * SFTP (if not using a private key).
     */
    char* sftp_password;

    /**
     * The base64-encoded private key to use when authenticating with the SSH
     * server for SFTP (if not using a password).
     */
    char* sftp_private_key;

    /**
     * The passphrase to use to decrypt the provided base64-encoded private
     * key.
     */
    char* sftp_passphrase;

    /**
     * The default location for file uploads within the SSH server. This will
     * apply only to uploads which do not use the filesystem guac_object (where
     * the destination directory is otherwise ambiguous).
     */
    char* sftp_directory;
#endif

} guac_vnc_settings;

/**
 * Parses all given args, storing them in a newly-allocated settings object. If
 * the args fail to parse, NULL is returned.
 *
 * @param user
 *     The user who submitted the given arguments while joining the
 *     connection.
 *
 * @param argc
 *     The number of arguments within the argv array.
 *
 * @param argv
 *     The values of all arguments provided by the user.
 *
 * @return
 *     A newly-allocated settings object which must be freed with
 *     guac_vnc_settings_free() when no longer needed. If the arguments fail
 *     to parse, NULL is returned.
 */
guac_vnc_settings* guac_vnc_parse_args(guac_user* user,
        int argc, const char** argv);

/**
 * Frees the given guac_vnc_settings object, having been previously allocated
 * via guac_vnc_parse_args().
 *
 * @param settings
 *     The settings object to free.
 */
void guac_vnc_settings_free(guac_vnc_settings* settings);

/**
 * NULL-terminated array of accepted client args.
 */
extern const char* GUAC_VNC_CLIENT_ARGS[];

#endif