/*
 * Internal remctl protocol constants.
 *
 * Various constants and values used throughout the remctl source.  This
 * should eventually move into a public header file.
 *
 * Written by Russ Allbery <rra@stanford.edu>
 * Based on prior work by Anton Ushakov
 * Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
 *     Board of Trustees, Leland Stanford Jr. University
 *
 * See LICENSE for licensing terms.
 */

#ifndef UTIL_PROTOCOL_H
#define UTIL_PROTOCOL_H 1

/* Maximum lengths from the protocol specification of tokens and data. */
#define TOKEN_MAX_LENGTH        (1024 * 1024)
#define TOKEN_MAX_DATA          (64 * 1024)

/* Message types. */
enum message_types {
    MESSAGE_COMMAND = 1,
    MESSAGE_QUIT    = 2,
    MESSAGE_OUTPUT  = 3,
    MESSAGE_STATUS  = 4,
    MESSAGE_ERROR   = 5,
    MESSAGE_VERSION = 6
};

/* Windows uses this for something else. */
#ifdef _WIN32
# undef ERROR_BAD_COMMAND
#endif

/* Error codes. */
enum error_codes {
    ERROR_INTERNAL        = 1,  /* Internal server failure. */
    ERROR_BAD_TOKEN       = 2,  /* Invalid format in token. */
    ERROR_UNKNOWN_MESSAGE = 3,  /* Unknown message type. */
    ERROR_BAD_COMMAND     = 4,  /* Invalid command format in token. */
    ERROR_UNKNOWN_COMMAND = 5,  /* Unknown command. */
    ERROR_ACCESS          = 6,  /* Access denied. */
    ERROR_TOOMANY_ARGS    = 7,  /* Argument count exceeds server limit. */
    ERROR_TOOMUCH_DATA    = 8   /* Argument size exceeds server limit. */
};

#endif /* UTIL_PROTOCOL_H */