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- #ifndef ZMODEM_H
- #define ZMODEM_H
-
- #ifndef TRUE
- #define TRUE 1
- #endif
-
- #ifndef OK
- #define OK 0
- #endif
-
- #ifndef FALSE
- #define FALSE 0
- #endif
-
- #define RETRYMAX 10
- #define MAXBLOCK 8192
-
- /*
- * Z M O D E M . H Manifest constants for ZMODEM
- * application to application file transfer protocol
- * 04-17-89 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 (CRC-16) */
- #define ZHEX 'B' /* HEX frame indicator */
- #define ZBIN32 'C' /* Binary frame with 32 bit FCS */
- #define ZBINR32 'D' /* RLE packed Binary frame with 32 bit FCS */
- #define ZVBIN 'a' /* Binary frame indicator (CRC-16) */
- #define ZVHEX 'b' /* HEX frame indicator */
- #define ZVBIN32 'c' /* Binary frame with 32 bit FCS */
- #define ZVBINR32 'd' /* RLE packed Binary frame with 32 bit FCS */
- #define ZRESC 0176 /* RLE flag/escape character */
- #define ZMAXHLEN 16 /* Max header information length NEVER CHANGE */
- #define ZMAXSPLEN 1024 /* Max subpacket length NEVER CHANGE */
-
- /* 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 CANRLE 010 /* Receiver can decode RLE */
- #define CANLZW 020 /* Receiver can uncompress */
- #define CANFC32 040 /* Receiver can use 32 bit Frame Check */
- #define ESCCTL 0100 /* Receiver expects ctl chars to be escaped */
- #define ESC8 0200 /* Receiver expects 8th bit to be escaped */
-
- /* Bit Masks for ZRINIT flags byte ZF1 */
- #define CANVHDR 01 /* Variable headers OK */
-
- /* Parameters for ZSINIT frame */
- #define ZATTNLEN 32 /* Max length of attention string */
- #define ALTCOFF ZF1 /* Offset to alternate canit string, 0 if not used */
- /* Bit Masks for ZSINIT flags byte ZF0 */
- #define TESCCTL 0100 /* Transmitter expects ctl chars to be escaped */
- #define TESC8 0200 /* Transmitter expects 8th bit to be escaped */
-
- /* 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 include options, one of these ored in ZF1 */
- #define ZMSKNOLOC 0200 /* Skip file if not present at rx */
- /* Management options, one of these ored in ZF1 */
- #define ZMMASK 037 /* Mask for the choices below */
- #define ZMNEWL 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 ZMNEW 5 /* Transfer if source newer */
- /* Number 5 is alive ... */
- #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 ZTRLE 3 /* Run Length encoding */
- /* Extended options for ZF3, bit encoded */
- #define ZXSPARS 64 /* Encoding for sparse file operations */
- #define ZCANVHDR 01 /* Variable headers OK */
- /* Receiver window size override */
- #define ZRWOVR 4 /* byte position for receive window override/256 */
-
- /* Parameters for ZCOMMAND frame ZF0 (otherwise 0) */
- #define ZCACK1 1 /* Acknowledge, then do command */
-
- long rclhdr();
-
- /* Globals used by ZMODEM functions */
- extern int Rxframeind; /* ZBIN ZBIN32, or ZHEX type of frame */
- extern int Rxtype; /* Type of header received */
- extern int Rxcount; /* Count of data bytes received */
- extern int long Rxpos; /* Received file position */
- extern int long Txpos; /* Transmitted file position */
- extern int Txfcs32; /* TURE means send binary frames with 32 bit FCS */
- extern int Crc32t; /* Display flag indicating 32 bit CRC being sent */
- extern int Crc32r; /* Display flag indicating 32 bit CRC being received */
- extern int Crc32; /* Display flag indicating 32 bit CRC being received */
- extern int Znulls; /* Number of nulls to send at beginning of ZDATA hdr */
- extern char Rxhdr[];
- extern char Txhdr[];
- extern char Attn[ZATTNLEN+1]; /* Attention string rx sends to tx on err */
- extern char *Altcan; /* Alternate canit string */
- extern char *Zendnames[];
- extern char *txbuf;
- extern char *rxbuf;
-
- /* End of ZMODEM.H */
-
- extern int Zrwindow;
- extern int Effbaud;
- extern int Zmodem;
- extern int Zctlesc;
- extern int Filesleft;
- extern long Totalleft;
-
- extern char *frametypes[];
- #define FTOFFSET 16
-
- extern void zsbhdr(int,int,char*);
- extern void zshhdr(int,int,char*);
- extern int zgethdr(char*,int);
- extern void zsdata(char*,int,int);
- extern int zrdata(char*,int);
- extern void stohdr(long);
-
- extern void zsendline(int);
- extern void zsdar32(char*,int,int);
- extern int zrdatr32(char*,int);
- extern int zdlread(void);
-
- extern unsigned short crc16tab[];
- extern unsigned long crc32tab[];
- #define updcrc16(cp,crc) (crc16tab[(((int)crc >> 8) & 0xff)] ^ (crc << 8) ^ cp)
- #define updcrc32(cp,crc) (crc32tab[((int)crc ^ cp) & 0xff] ^ ((crc >> 8) & 0x00ffffff))
-
- #endif
-