www.pudn.com > ZMODEM code.zip > ZMODEM.H

/* 
 *   Z M O D E M . H     Manifest constants for ZMODEM 
 *    application to application file transfer protocol 
 *    9-06-86  Chuck Forsberg Omen Technology Inc 
 */ 
#define ZPAD '*'	/* 052 Padding character begins frames */ 
#define ZDLE 030	/* Ctrl-X Zmodem escape - `ala BISYNC DLE */ 
#define ZDLEE (ZDLE^0100)	/* Escaped ZDLE as transmitted */ 
#define ZBIN 'A'	/* Binary frame indicator */ 
#define ZHEX 'B'	/* HEX frame indicator */ 
 
/* Frame types (see array "frametypes" in zm.c) */ 
#define ZRQINIT	0	/* Request receive init */ 
#define ZRINIT	1	/* Receive init */ 
#define ZSINIT 2	/* Send init sequence (optional) */ 
#define ZACK 3		/* ACK to above */ 
#define ZFILE 4		/* File name from sender */ 
#define ZSKIP 5		/* To sender: skip this file */ 
#define ZNAK 6		/* Last packet was garbled */ 
#define ZABORT 7	/* Abort batch transfers */ 
#define ZFIN 8		/* Finish session */ 
#define ZRPOS 9		/* Resume data trans at this position */ 
#define ZDATA 10	/* Data packet(s) follow */ 
#define ZEOF 11		/* End of file */ 
#define ZFERR 12	/* Fatal Read or Write error Detected */ 
#define ZCRC 13		/* Request for file CRC and response */ 
#define ZCHALLENGE 14	/* Receiver's Challenge */ 
#define ZCOMPL 15	/* Request is complete */ 
#define ZCAN 16		/* Other end canned session with CAN*5 */ 
#define ZFREECNT 17	/* Request for free bytes on filesystem */ 
#define ZCOMMAND 18	/* Command from sending program */ 
#define ZSTDERR 19	/* Output to standard error, data follows */ 
 
/* ZDLE sequences */ 
#define ZCRCE 'h'	/* CRC next, frame ends, header packet follows */ 
#define ZCRCG 'i'	/* CRC next, frame continues nonstop */ 
#define ZCRCQ 'j'	/* CRC next, frame continues, ZACK expected */ 
#define ZCRCW 'k'	/* CRC next, ZACK expected, end of frame */ 
#define ZRUB0 'l'	/* Translate to rubout 0177 */ 
#define ZRUB1 'm'	/* Translate to rubout 0377 */ 
 
/* zdlread return values (internal) */ 
/* -1 is general error, -2 is timeout */ 
#define GOTOR 0400 
#define GOTCRCE (ZCRCE|GOTOR)	/* ZDLE-ZCRCE received */ 
#define GOTCRCG (ZCRCG|GOTOR)	/* ZDLE-ZCRCG received */ 
#define GOTCRCQ (ZCRCQ|GOTOR)	/* ZDLE-ZCRCQ received */ 
#define GOTCRCW (ZCRCW|GOTOR)	/* ZDLE-ZCRCW received */ 
#define GOTCAN	(GOTOR|030)	/* CAN*5 seen */ 
 
/* Byte positions within header array */ 
#define ZF0	3	/* First flags byte */ 
#define ZF1	2 
#define ZF2	1 
#define ZF3	0 
#define ZP0	0	/* Low order 8 bits of position */ 
#define ZP1	1 
#define ZP2	2 
#define ZP3	3	/* High order 8 bits of file position */ 
 
/* Bit Masks for ZRINIT flags byte ZF0 */ 
#define CANFDX	01	/* Rx can send and receive true FDX */ 
#define CANOVIO	02	/* Rx can receive data during disk I/O */ 
#define CANBRK	04	/* Rx can send a break signal */ 
#define CANCRY	010	/* Receiver can decrypt */ 
#define CANLZW	020	/* Receiver can uncompress */ 
 
/* Parameters for ZSINIT frame */ 
#define ZATTNLEN 32	/* Max length of attention string */ 
 
/* Parameters for ZFILE frame */ 
/* Conversion options one of these in ZF0 */ 
#define ZCBIN	1	/* Binary transfer - inhibit conversion */ 
#define ZCNL	2	/* Convert NL to local end of line convention */ 
#define ZCRESUM	3	/* Resume interrupted file transfer */ 
/* Management options, one of these in ZF1 */ 
#define ZMNEW	1	/* Transfer if source newer or longer */ 
#define ZMCRC	2	/* Transfer if different file CRC or length */ 
#define ZMAPND	3	/* Append contents to existing file (if any) */ 
#define ZMCLOB	4	/* Replace existing file */ 
#define ZMSPARS	5	/* Encoding for sparse file */ 
#define ZMDIFF	6	/* Transfer if dates or lengths different */ 
#define ZMPROT	7	/* Protect destination file */ 
/* Transport options, one of these in ZF2 */ 
#define ZTLZW	1	/* Lempel-Ziv compression */ 
#define ZTCRYPT	2	/* Encryption */ 
#define ZTRLE	3	/* Run Length encoding */ 
 
/* Parameters for ZCOMMAND frame ZF0 (otherwise 0) */ 
#define ZCACK1	1	/* Acknowledge, then do command */ 
 
long rclhdr(); 
 
/* Globals used by ZMODEM functions */ 
int Rxframeind;		/* ZBIN or ZHEX indicates type of frame received */ 
int Rxtype;		/* Type of header received */ 
int Rxcount;		/* Count of data bytes received */ 
extern Rxtimeout;	/* Tenths of seconds to wait for something */ 
char Rxhdr[4];		/* Received header */ 
char Txhdr[4];		/* Transmitted header */ 
long Rxpos;		/* Received file position */ 
long Txpos;		/* Transmitted file position */ 
int Znulls;		/* Number of nulls to send at beginning of ZDATA hdr */ 
char Attn[ZATTNLEN+1];	/* Attention string rx sends to tx on err */