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/*
* xmodem.hh -- Include file for ZMODEM private stuff * * Copyright 1989 by Hilgraeve Inc. -- Monroe, MI * All rights reserved * * $Revision: 6 $ * $Date: 7/12/02 8:20a $ */
// These constants are used to turn on various types of debug display
// #define DEBUG_DUMPPACKET // Log bad packet contents to a file
#if defined(ERROR)
#undef ERROR
#endif
#if defined(CAN)
#undef CAN
#endif
#define OK 0
#define FALSE 0
#define TRUE 1
#if defined(ERROR)
#undef ERROR
#endif
#define ERROR (-1)
#define FILE_DONE 1
#define TRANSFER_DONE 2
/*
* Max value for HOWMANY is 255. * A larger value reduces system overhead but may evoke kernel bugs. * 133 corresponds to an XMODEM/CRC sector */#ifndef HOWMANY
#define HOWMANY 133
#endif
/* Ward Christensen / CP/M parameters - Don't change these! */#define ENQ 005
#define CAN ('X'&037)
#define XOFF ('s'&037)
#define XON ('q'&037)
#define SOH 1
#define STX 2
#define EOT 4
#define ACK 6
#define NAK 025
#define CPMEOF 032
#define WANTCRC 0103 /* send C not NAK to get crc not checksum */
#define TIMEOUT (-2)
#define RCDO (-3) /* Not too sure about this one */
#define ZCARRIER_LOST (-4)
#define ZFULLDISK (-5)
#define ERROFFSET 5
#define ERRORMAX 5
#define RETRYMAX 5
#define WCEOT (-10)
//#define PATHLEN 257 /* ready for 4.2 bsd ? */
#define PATHLEN MAX_PATH
#define UNIXFILE 0xF000 /* The S_IFMT file mask bit for stat */
/* Parameters for ZSINIT frame */
#define ZATTNLEN 32 /* Max length of attention string */
/* Control structure, allocated during transfers to hold control variables */struct z_mdm_cntrl { HSESSION hSession; /* in case we actually need this */ HCOM hCom; /* derived from above */
int nMethod; /* Zmodem, or Zmodem wiht crash recovery? */ int fSavePartial; /* Save partially received files? */ unsigned long ulOverride; /* Override "file exists" overwrite options? */
long real_bytes; /* real number of bytes, not virtual number */ long file_bytes; /* number of bytes processed in current file */ long total_bytes; /* number of bytes total in previous files */ long actual_bytes; /* previous value includes skipped files */ int nSkip; /* true if skipping a file */ void *flagkey; /* used for detecting the user abort key */ jmp_buf flagkey_buf; /* used for long jump after user abort */ jmp_buf intrjmp; ST_IOBUF *fh; /* handle for the current file */ long basesize; /* used when appending to a file */ long xfertimer; /* used for timing the transfers */ long xfertime; /* ditto */ int nfiles; /* total number of files to transfer */ int filen; /* number of the current file */ long filesize; /* size of the current file */ long nbytes; /* total number of bytes to transfer */ long Rxtimeout; /* Tenths of a second to wait for something */ const long *z_cr3tab; /* pointer to 32 bit checksum table */ const unsigned short *z_crctab; /* pointer to 16 bit checksum table */ int Rxframeind; /* ZBIN ZBIN32, or ZHEX type of frame received */ int Rxtype; /* Type of header received */ int Rxcount; /* Count of data bytes received */ char Rxhdr[4]; /* Received header */ char Txhdr[4]; /* Transmitted header */ long Rxpos; /* Received file position */ long Txpos; /* Transmitted file position */ int Txfcs32; /* TRUE means send binary frames with 32 bit FCS */ int Crc32t; /* Display flag indicating 32 bit CRC being sent */ int Crc32; /* Display flag indicating 32 bit CRC being received */ char Attn[ZATTNLEN+1]; /* Attention string rx sends to tx on err */ int lastsent; /* Last char we sent */ int Not8bit; /* Seven bits seen on header */ long displayed_time;
int Zctlesc; int Zrwindow; BOOL Eofseen; int tryzhdrtype; BOOL Thisbinary; int Filemode; long Modtime; int do_init; TCHAR zconv; /* ZMODEM file conversion request */ TCHAR zmanag; /* ZMODEM file management request */ TCHAR ztrans; /* ZMODEM file transport request */ TCHAR *secbuf; TCHAR *fname; TCHAR *our_fname;
stFB stP; /* used in foo com functions */
TCHAR *txbuf; int Filesleft; long Totalleft; int blklen; int blkopt; /* do we override zmodem block length */ int Beenhereb4; BOOL Wantfcs32; /* Do we want 32 bit crc */ int Rxflags; unsigned Rxbuflen; /* receiver maximum buffer length */ unsigned Txwindow; unsigned Txwcnt; /* counter used to space ack requests */ unsigned Txwspac; /* space between ZCRCQ requests */ char Myattn[1]; int errors; int s_error; int pstatus; int last_event;
int Lskipnocor; long Lastsync; /* last offset to which we got a ZRPOS */ long Lrxpos; /* receivers last reported offset */ };
typedef struct z_mdm_cntrl ZC;
#define updcrc(x,cp,crc) (x->z_crctab[((crc >> 8) & 255)] ^ (crc << 8) ^ cp)
#define UPDC32(x,b,c) (x->z_cr3tab[((int)c ^ b) & 0xff] ^ ((c >> 8) & 0x00FFFFFF))
/* from zmdm.c */
void zsbhdr (ZC *zc, int type, BYTE *hdr);void zsbh32 (ZC *zc, BYTE *hdr, int type);void zshhdr (ZC *zc, int type, BYTE *hdr);void zsdata (ZC *zc, BYTE *buf, int length, int frameend);void zsda32 (ZC *zc, BYTE *buf, int length, int frameend);
int zrdata (ZC *zc, BYTE *buf, int length);int zrdat32 (ZC *zc, BYTE *buf, int length);int zgethdr (ZC *zc, BYTE *hdr, int eflag);int zrbhdr (ZC *zc, BYTE *hdr, int eflag);int zrbhdr32 (ZC *zc, BYTE *hdr, int eflag);int zrhhdr (ZC *zc, BYTE *hdr, int eflag);
void zputhex (ZC *zc, int c);void zsendline (ZC *zc, int c);int zgethex (ZC *zc);int zgeth1 (ZC *zc);int zdlread (ZC *zc);int noxrd7 (ZC *zc);void stohdr (ZC *zc, long pos);long rclhdr (BYTE *hdr);
int zmdm_rl (ZC *zc, int timeout);
/* Functions used to fiddle with the displays */
void zmdms_progress (ZC *zc, int status);void zmdms_newfile (ZC *zc, int filen, TCHAR *fname, long flength);void zmdms_update (ZC *zc, int state);
void zmdmr_progress (ZC *zc, int status);void zmdmr_update (ZC *zc, int status);void zmdmr_filecnt (ZC *zc, int cnt);void zmdmr_totalsize (ZC *zc, long bytes);void zmdmr_newfile (ZC *zc, int filen, BYTE *theirname, TCHAR *ourname);void zmdmr_filesize (ZC *zc, long fsize);
unsigned int zmdm_error (ZC *zc, int error); int zmdm_retval (ZC *zc, int flag, int error);
/* from zmdm_rcv.c */
int tryz (ZC *zc);int rzfiles (ZC *zc);int rzfile (ZC *zc);void zmputs (ZC *zc, char *s);int closeit (ZC *zc);void ackbibi (ZC *zc);/* void bttyout (char c); */
/* from zmdm_snd.c */
int wcs (ZC *zc, TCHAR FAR *oname);int wctxpn (ZC *zc, TCHAR FAR *name);int zfilbuf (ZC *zc);void canit (ZC *zc);int getzrxinit (ZC *zc);int sendzsinit (ZC *zc);int zsendfile (ZC *zc, char *buf, int blen);int zsendfdata (ZC *zc);int getinsync (ZC *zc, int flag);void saybibi (ZC *zc);
/* the following stuff is here as an attempt to match names into HA5 */
#define readline(h,x) zmdm_rl(h,x)
#define xsendline(h,p,c) fooComSendChar(h->hCom,p,c)
#define sendline(h,p,c) fooComSendChar(h->hCom,p,c)
#define flushmo(h,p) fooComSendPush(h->hCom,p)
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