249 lines
10 KiB
C
249 lines
10 KiB
C
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/* $Id: hydra.h,v 1.4 2003/10/22 21:11:40 mbroek Exp $ */
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/*
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* As this file has been derived from the HydraCom source, here is the
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* original copyright information:
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*
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* Note that you can find the file LICENSE.DOC from HydraCom in
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* misc/HYDRACOM-LICENSE
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*
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* Some changes are made in this file to customize for use with MBSE BBS.
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* There are also some extensions not in the original Hydra code for zlib
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* packet compression of data packets.
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*/
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/*=============================================================================
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HydraCom Version 1.00
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A sample implementation of the
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HYDRA Bi-Directional File Transfer Protocol
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HydraCom was written by
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Arjen G. Lentz, LENTZ SOFTWARE-DEVELOPMENT
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COPYRIGHT (C) 1991-1993; ALL RIGHTS RESERVED
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The HYDRA protocol was designed by
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Arjen G. Lentz, LENTZ SOFTWARE-DEVELOPMENT and
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Joaquim H. Homrighausen
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COPYRIGHT (C) 1991-1993; ALL RIGHTS RESERVED
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Revision history:
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06 Sep 1991 - (AGL) First tryout
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.. ... .... - Internal development
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11 Jan 1993 - HydraCom version 1.00, Hydra revision 001 (01 Dec 1992)
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For complete details of the Hydra and HydraCom licensing restrictions,
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please refer to the license agreements which are published in their entirety
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in HYDRACOM.C and LICENSE.DOC, and also contained in the documentation file
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HYDRACOM.DOC
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Use of this file is subject to the restrictions contained in the Hydra and
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HydraCom licensing agreements. If you do not find the text of this agreement
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in any of the aforementioned files, or if you do not have these files, you
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should immediately contact LENTZ SOFTWARE-DEVELOPMENT and/or Joaquim
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Homrighausen at one of the addresses listed below. In no event should you
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proceed to use this file without having accepted the terms of the Hydra and
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HydraCom licensing agreements, or such other agreement as you are able to
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reach with LENTZ SOFTWARE-DEVELOMENT and Joaquim Homrighausen.
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Hydra protocol design and HydraCom driver: Hydra protocol design:
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Arjen G. Lentz Joaquim H. Homrighausen
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LENTZ SOFTWARE-DEVELOPMENT 389, route d'Arlon
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Langegracht 7B L-8011 Strassen
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3811 BT Amersfoort Luxembourg
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The Netherlands
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FidoNet 2:283/512, AINEX-BBS +31-33-633916 FidoNet 2:270/17
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arjen_lentz@f512.n283.z2.fidonet.org joho@ae.lu
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Please feel free to contact us at any time to share your comments about our
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software and/or licensing policies.
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=============================================================================*/
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#ifndef _HYDRA_H
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#define _HYDRA_H
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/* HYDRA Specification Revision/Timestamp ---------Revision------Date------- */
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#define H_REVSTAMP 0x2b1aab00L /* 001 01 Dec 1992 */
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#define H_REVISION 1
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/* HYDRA Basic Values ------------------------------------------------------ */
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#ifndef XON
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#define XON ('Q' - '@') /* Ctrl-Q (^Q) xmit-on character */
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#define XOFF ('S' - '@') /* Ctrl-S (^S) xmit-off character */
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#endif
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#define H_DLE ('X' - '@') /* Ctrl-X (^X) HYDRA DataLinkEscape */
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#define H_UNCBLKLEN 2048 /* Max. uncompressed blocklen */
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#define H_MINBLKLEN 64 /* Min. length of a HYDRA data block */
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#define H_MAXBLKLEN 8192 /* Max. length of a HYDRA data block */
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/* NB: official is 2048, here we use */
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/* this to prepare for receive large */
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/* compressed blocks. Uncompressed */
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/* we still use 2048 maximum. */
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#define H_OVERHEAD 8 /* Max. no. control bytes in a pkt */
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#define H_MAXPKTLEN ((H_MAXBLKLEN + H_OVERHEAD + 5) * 3) /* Encoded pkt */
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#define H_BUFLEN (H_MAXPKTLEN + 16) /* Buffer sizes: max.enc.pkt + slack */
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#define H_ZIPBUFLEN (((H_BUFLEN * 11) / 10) + 12) /* Compressed data pkt */
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#define H_PKTPREFIX 31 /* Max length of pkt prefix string */
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#define H_FLAGLEN 3 /* Length of a flag field */
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#define H_RETRIES 10 /* No. retries in case of an error */
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#define H_MINTIMER 10 /* Minimum timeout period */
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#define H_MAXTIMER 60 /* Maximum timeout period */
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#define H_START 5 /* Timeout for re-sending startstuff */
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#define H_IDLE 20 /* Idle? tx IDLE pkt every 20 secs */
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#define H_BRAINDEAD 120 /* Braindead in 2 mins (120 secs) */
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/* HYDRA Return codes ------------------------------------------------------ */
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#define XFER_ABORT (-1) /* Failed on this file & abort xfer */
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#define XFER_SKIP 0 /* Skip this file but continue xfer */
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#define XFER_OK 1 /* File was sent, continue transfer */
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/* HYDRA Transmitter States ------------------------------------------------ */
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enum HyTxStates
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{
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HTX_DONE, /* All over and done */
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HTX_START, /* Send start autostr + START pkt */
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HTX_SWAIT, /* Wait for any pkt or timeout */
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HTX_INIT, /* Send INIT pkt */
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HTX_INITACK, /* Wait for INITACK pkt */
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HTX_RINIT, /* Wait for HRX_INIT -> HRX_FINFO */
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HTX_NextFile,
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HTX_ToFName,
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HTX_FINFO, /* Send FINFO pkt */
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HTX_FINFOACK, /* Wait for FINFOACK pkt */
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HTX_DATA, /* Send next packet with file data */
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HTX_SkipFile,
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HTX_DATAACK, /* Wait for DATAACK packet */
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HTX_XWAIT, /* Wait for HRX_END */
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HTX_EOF, /* Send EOF pkt */
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HTX_EOFACK, /* End of file, wait for EOFACK pkt */
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HTX_REND, /* Wait for HRX_END && HTD_DONE */
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HTX_END, /* Send END pkt (finish session) */
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HTX_ENDACK, /* Wait for END pkt from other side */
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HTX_Abort,
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};
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/* HYDRA Receiver States --------------------------------------------------- */
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enum HyRxStates
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{
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HRX_DONE, /* All over and done */
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HRX_INIT, /* Wait for INIT pkt */
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HRX_FINFO, /* Wait for FINFO pkt of next file */
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HRX_ToData,
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HRX_DATA, /* Wait for next DATA pkt */
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HRX_BadPos,
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HRX_Timer,
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HRX_HdxLink,
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HRX_Retries,
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HRX_RPos,
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HRX_OkEOF,
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};
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/* HYDRA Packet Types ------------------------------------------------------ */
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enum HyPktTypes
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{
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HPKT_START = 'A', /* Startup sequence */
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HPKT_INIT = 'B', /* Session initialisation */
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HPKT_INITACK = 'C', /* Response to INIT pkt */
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HPKT_FINFO = 'D', /* File info (name, size, time) */
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HPKT_FINFOACK = 'E', /* Response to FINFO pkt */
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HPKT_DATA = 'F', /* File data packet */
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HPKT_DATAACK = 'G', /* File data position ACK packet */
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HPKT_RPOS = 'H', /* Transmitter reposition packet */
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HPKT_EOF = 'I', /* End of file packet */
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HPKT_EOFACK = 'J', /* Response to EOF packet */
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HPKT_END = 'K', /* End of session */
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HPKT_IDLE = 'L', /* Idle - just saying I'm alive */
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HPKT_DEVDATA = 'M', /* Data to specified device */
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HPKT_DEVDACK = 'N', /* Response to DEVDATA pkt */
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#ifdef HAVE_ZLIB_H
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HPKT_ZIPDATA = 'O', /* Zlib compressed file data packet */
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HPKT_HIGHEST = 'O' /* Highest known pkttype in this imp */
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#else
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HPKT_HIGHEST = 'N' /* Highest known pkttype in this imp */
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#endif
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};
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/* HYDRA compression types ------------------------------------------------- */
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enum HyCompStates
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{
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HCMP_NONE, /* No compression, default */
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HCMP_GZ, /* Gzip compression */
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HCMP_BZ2, /* Bzip2 compression */
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};
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/* HYDRA Internal Pseudo Packet Types -------------------------------------- */
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#define H_NOPKT 0 /* No packet (yet) */
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#define H_CANCEL (-1) /* Received cancel sequence 5*Ctrl-X */
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#define H_CARRIER (-2) /* Lost carrier */
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#define H_SYSABORT (-3) /* Aborted by operator on this side */
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#define H_TXTIME (-4) /* Transmitter timeout */
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#define H_DEVTXTIME (-5) /* Device transmitter timeout */
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#define H_BRAINTIME (-6) /* Braindead timeout (quite fatal) */
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/* HYDRA Packet Format: START[<data>]<type><crc>END ------------------------ */
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enum HyPktFormats
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{
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HCHR_PKTEND = 'a', /* End of packet (any format) */
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HCHR_BINPKT = 'b', /* Start of binary packet */
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HCHR_HEXPKT = 'c', /* Start of hex encoded packet */
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HCHR_ASCPKT = 'd', /* Start of shifted 7bit encoded pkt */
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HCHR_UUEPKT = 'e', /* Start of uuencoded packet */
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};
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/* HYDRA Local Storage of INIT Options (Bitmapped) ------------------------- */
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#define HOPT_XONXOFF (0x00000001L) /* Escape XON/XOFF */
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#define HOPT_TELENET (0x00000002L) /* Escape CR-'@'-CR (Telenet escape) */
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#define HOPT_CTLCHRS (0x00000004L) /* Escape ASCII 0-31 and 127 */
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#define HOPT_HIGHCTL (0x00000008L) /* Escape above 3 with 8th bit too */
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#define HOPT_HIGHBIT (0x00000010L) /* Escape ASCII 128-255 + strip high */
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#define HOPT_CANBRK (0x00000020L) /* Can transmit a break signal */
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#define HOPT_CANASC (0x00000040L) /* Can transmit/handle ASC packets */
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#define HOPT_CANUUE (0x00000080L) /* Can transmit/handle UUE packets */
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#define HOPT_CRC32 (0x00000100L) /* Packets with CRC-32 allowed */
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#define HOPT_DEVICE (0x00000200L) /* DEVICE packets allowed */
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#define HOPT_FPT (0x00000400L) /* Can handle filenames with paths */
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#ifdef HAVE_ZLIB_H
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#define HOPT_CANPLZ (0x00000800L) /* Can handle zlib packet compress */
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#endif
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/* What we can do */
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#ifdef HAVE_ZLIB_H
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#define HCAN_OPTIONS (HOPT_XONXOFF | HOPT_TELENET | HOPT_CTLCHRS | HOPT_HIGHCTL | HOPT_HIGHBIT | HOPT_CRC32 | HOPT_CANPLZ)
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#else
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#define HCAN_OPTIONS (HOPT_XONXOFF | HOPT_TELENET | HOPT_CTLCHRS | HOPT_HIGHCTL | HOPT_HIGHBIT | HOPT_CRC32)
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#endif
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/* Vital options if we ask for any; abort if other side doesn't support them */
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#define HNEC_OPTIONS (HOPT_XONXOFF | HOPT_TELENET | HOPT_CTLCHRS | HOPT_HIGHCTL | HOPT_HIGHBIT | HOPT_CANBRK)
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/* Non-vital options; nice if other side supports them, but doesn't matter */
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#ifdef HAVE_ZLIB_H
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#define HUNN_OPTIONS (HOPT_CANASC | HOPT_CANUUE | HOPT_CRC32 | HOPT_CANPLZ)
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#else
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#define HUNN_OPTIONS (HOPT_CANASC | HOPT_CANUUE | HOPT_CRC32)
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#endif
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/* Default options */
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#define HDEF_OPTIONS (HOPT_CRC32)
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/* rxoptions during init (needs to handle ANY link yet unknown at that point */
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#define HRXI_OPTIONS (HOPT_XONXOFF | HOPT_TELENET | HOPT_CTLCHRS | HOPT_HIGHCTL | HOPT_HIGHBIT)
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/* ditto, but this time txoptions */
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#define HTXI_OPTIONS (HOPT_XONXOFF | HOPT_TELENET | HOPT_CTLCHRS | HOPT_HIGHCTL | HOPT_HIGHBIT)
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#define h_crc16test(crc) (((crc) == 0xf0b8 ) ? 1 : 0)
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#define h_crc32test(crc) (((crc) == 0xdebb20e3L) ? 1 : 0)
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int hydra(int);
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#endif
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