1 /* zmodem.h - ZMODEM protocol constants 2 3 Copyright (C) until 1998 Chuck Forsberg (OMEN Technology Inc) 4 Copyright (C) 1996, 1997 Uwe Ohse 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 19 02111-1307, USA. 20 21 * 05-23-87 Chuck Forsberg Omen Technology Inc 22 */ 23 #define ZPAD '*' /* 052 Padding character begins frames */ 24 #define ZDLE 030 /* Ctrl-X Zmodem escape - `ala BISYNC DLE */ 25 #define ZDLEE (ZDLE^0100) /* Escaped ZDLE as transmitted */ 26 #define ZBIN 'A' /* Binary frame indicator */ 27 #define ZHEX 'B' /* HEX frame indicator */ 28 #define ZBIN32 'C' /* Binary frame with 32 bit FCS */ 29 30 /* Frame types (see array "frametypes" in zm.c) */ 31 #define ZRQINIT 0 /* Request receive init */ 32 #define ZRINIT 1 /* Receive init */ 33 #define ZSINIT 2 /* Send init sequence (optional) */ 34 #define ZACK 3 /* ACK to above */ 35 #define ZFILE 4 /* File name from sender */ 36 #define ZSKIP 5 /* To sender: skip this file */ 37 #define ZNAK 6 /* Last packet was garbled */ 38 #define ZABORT 7 /* Abort batch transfers */ 39 #define ZFIN 8 /* Finish session */ 40 #define ZRPOS 9 /* Resume data trans at this position */ 41 #define ZDATA 10 /* Data packet(s) follow */ 42 #define ZEOF 11 /* End of file */ 43 #define ZFERR 12 /* Fatal Read or Write error Detected */ 44 #define ZCRC 13 /* Request for file CRC and response */ 45 #define ZCHALLENGE 14 /* Receiver's Challenge */ 46 #define ZCOMPL 15 /* Request is complete */ 47 #define ZCAN 16 /* Other end canned session with CAN*5 */ 48 #define ZFREECNT 17 /* Request for free bytes on filesystem */ 49 #define ZCOMMAND 18 /* Command from sending program */ 50 #define ZSTDERR 19 /* Output to standard error, data follows */ 51 52 /* ZDLE sequences */ 53 #define ZCRCE 'h' /* CRC next, frame ends, header packet follows */ 54 #define ZCRCG 'i' /* CRC next, frame continues nonstop */ 55 #define ZCRCQ 'j' /* CRC next, frame continues, ZACK expected */ 56 #define ZCRCW 'k' /* CRC next, ZACK expected, end of frame */ 57 #define ZRUB0 'l' /* Translate to rubout 0177 */ 58 #define ZRUB1 'm' /* Translate to rubout 0377 */ 59 60 /* zdlread return values (internal) */ 61 /* -1 is general error, -2 is timeout */ 62 #define GOTOR 0400 63 #define GOTCRCE (ZCRCE|GOTOR) /* ZDLE-ZCRCE received */ 64 #define GOTCRCG (ZCRCG|GOTOR) /* ZDLE-ZCRCG received */ 65 #define GOTCRCQ (ZCRCQ|GOTOR) /* ZDLE-ZCRCQ received */ 66 #define GOTCRCW (ZCRCW|GOTOR) /* ZDLE-ZCRCW received */ 67 #define GOTCAN (GOTOR|030) /* CAN*5 seen */ 68 69 /* Byte positions within header array */ 70 #define ZF0 3 /* First flags byte */ 71 #define ZF1 2 72 #define ZF2 1 73 #define ZF3 0 74 #define ZP0 0 /* Low order 8 bits of position */ 75 #define ZP1 1 76 #define ZP2 2 77 #define ZP3 3 /* High order 8 bits of file position */ 78 79 /* Bit Masks for ZRINIT flags byte ZF0 */ 80 #define CANFDX 0x01 /* Rx can send and receive true FDX */ 81 #define CANOVIO 0x02 /* Rx can receive data during disk I/O */ 82 #define CANBRK 0x04 /* Rx can send a break signal */ 83 #define CANCRY 0x08 /* Receiver can decrypt */ 84 #define CANLZW 0x10 /* Receiver can uncompress */ 85 #define CANFC32 0x20 /* Receiver can use 32 bit Frame Check */ 86 #define ESCCTL 0x40 /* Receiver expects ctl chars to be escaped */ 87 #define ESC8 0x80 /* Receiver expects 8th bit to be escaped */ 88 /* Bit Masks for ZRINIT flags byze ZF1 */ 89 #define ZF1_CANVHDR 0x01 /* Variable headers OK, unused in lrzsz */ 90 #define ZF1_TIMESYNC 0x02 /* nonstandard, Receiver request timesync */ 91 92 /* Parameters for ZSINIT frame */ 93 #define ZATTNLEN 32 /* Max length of attention string */ 94 /* Bit Masks for ZSINIT flags byte ZF0 */ 95 #define TESCCTL 0100 /* Transmitter expects ctl chars to be escaped */ 96 #define TESC8 0200 /* Transmitter expects 8th bit to be escaped */ 97 98 /* Parameters for ZFILE frame */ 99 /* Conversion options one of these in ZF0 */ 100 #define ZCBIN 1 /* Binary transfer - inhibit conversion */ 101 #define ZCNL 2 /* Convert NL to local end of line convention */ 102 #define ZCRESUM 3 /* Resume interrupted file transfer */ 103 /* Management include options, one of these ored in ZF1 */ 104 #define ZF1_ZMSKNOLOC 0x80 /* Skip file if not present at rx */ 105 /* Management options, one of these ored in ZF1 */ 106 #define ZF1_ZMMASK 0x1f /* Mask for the choices below */ 107 #define ZF1_ZMNEWL 1 /* Transfer if source newer or longer */ 108 #define ZF1_ZMCRC 2 /* Transfer if different file CRC or length */ 109 #define ZF1_ZMAPND 3 /* Append contents to existing file (if any) */ 110 #define ZF1_ZMCLOB 4 /* Replace existing file */ 111 #define ZF1_ZMNEW 5 /* Transfer if source newer */ 112 /* Number 5 is alive ... */ 113 #define ZF1_ZMDIFF 6 /* Transfer if dates or lengths different */ 114 #define ZF1_ZMPROT 7 /* Protect destination file */ 115 #define ZF1_ZMCHNG 8 /* Change filename if destination exists */ 116 117 /* Transport options, one of these in ZF2 */ 118 #define ZTLZW 1 /* Lempel-Ziv compression */ 119 #define ZTCRYPT 2 /* Encryption */ 120 #define ZTRLE 3 /* Run Length encoding */ 121 /* Extended options for ZF3, bit encoded */ 122 #define ZXSPARS 64 /* Encoding for sparse file operations */ 123 124 /* Parameters for ZCOMMAND frame ZF0 (otherwise 0) */ 125 #define ZCACK1 1 /* Acknowledge, then do command */ 126 127 /* Globals used by ZMODEM functions */ 128 #if 0 129 extern int Rxframeind; /* ZBIN ZBIN32, or ZHEX type of frame received */ 130 extern int Rxtype; /* Type of header received */ 131 extern int Zrwindow; /* RX window size (controls garbage count) */ 132 extern char Rxhdr[4]; /* Received header */ 133 extern char Txhdr[4]; /* Transmitted header */ 134 extern long Txpos; /* Transmitted file position */ 135 extern int Txfcs32; /* TURE means send binary frames with 32 bit FCS */ 136 extern int Crc32t; /* Display flag indicating 32 bit CRC being sent */ 137 extern int Crc32; /* Display flag indicating 32 bit CRC being received */ 138 extern int Znulls; /* Number of nulls to send at beginning of ZDATA hdr */ 139 extern char Attn[ZATTNLEN+1]; /* Attention string rx sends to tx on err */ 140 #endif 141 142 /* End of ZMODEM.H */ 143