/* * xprzmodem.h: Definitions for xprzmodem.library; * Version 2.0, 28 October 1989, by Rick Huebner. * Released to the Public Domain; do as you like with this code. */ /* #define DEBUGLOG 1 */ #define mysprintf sprintf #include #include /* Return codes */ #define OK 0 #define ERROR (-1) #define TIMEOUT (-2) #define RCDO (-3) /* Relevant control characters */ #define CR ('M' & 0x1F) /* ^M */ #define DLE ('P' & 0x1F) /* ^P */ #define XON ('Q' & 0x1F) /* ^Q */ #define XOFF ('S' & 0x1F) /* ^S */ #define CAN ('X' & 0x1F) /* ^X */ #define CPMEOF ('Z' & 0x1F) /* ^Z */ /* Misc. program constants */ #define LZMANAG 0 /* Default ZMODEM file management mode */ #define LZTRANS 0 /* Default ZMODEM file transport mode */ #define PATHLEN 256 /* What's the max legal path size? */ #define CONFIGLEN 32 /* Max length of transfer options string */ #define KSIZE 8192 /* Max allowable packet size */ #define MINBLOCK 64 /* Min allowable packet size */ #define MAXGOODNEEDED 8192 /* Max # good bytes req'd to bump packet size */ /* Provision for future 7-bit ZMODEM; for now, there's no difference */ #define sendline xsendline /* * Replacement for global variables normally used, in order to make code * fully reentrant; each invocation allocs their own Vars, and passes the * struct pointer down through the entire program so they're always available. * Pointer to this struct is usually able to be a register variable, so access * is no worse than any stack variable (all register-relative). Kinda * kludgey, but the original ZModem code design depended on lots of globals, * and I didn't want to redesign the whole damn thing. Besides, it's more * efficient than constantly pushing & popping args all over the place. */ struct Vars { struct XPR_IO io; /* Copy of XProto IO struct passed by term prog. */ struct XPR_UPDATE __aligned xpru; /* Scratchpad xpr_update() control struct */ struct timeval __aligned Starttime; /* Time transfer started */ UBYTE __aligned Rxhdr [4]; /* Received header */ UBYTE Txhdr [4]; /* Transmitted header */ UBYTE Msgbuf [128]; /* Scratchpad buffer for printing messages */ UBYTE Filename [PATHLEN]; /* Name of the file being up/downloaded */ UBYTE Pktbuf [KSIZE]; /* File data packet buffer */ UBYTE Modembuf [256]; /* Input buffer for data from modem */ UBYTE Outbuf [KSIZE * 2 + 256]; /* Output buffer for data to modem */ UBYTE *Modemchar; /* Next char to get from Modembuf */ long File; /* Handle of file being transferred */ long Baud; /* BPS setting of modem */ long Strtpos; /* Starting byte position of transfer */ long Fsize; /* Size of file being transferred */ long Rxbytes; /* Number of bytes received so far */ long Rxpos; /* Received file position */ long Txpos; /* Transmitted file position */ short Filcnt; /* Number of files opened for transmission */ short Errcnt; /* Number of files unreadable */ short Noroom; /* Flags 'insufficient disk space' errors */ short Rxbuflen; /* Largest frame they're willing to xfer */ short Tframlen; /* Largest frame we're willing to xfer */ short Rxtimeout; /* Tenths of seconds to wait for something */ short Tryzhdrtype; /* Header type to send corresp to Last rx close */ short Modemcount; /* Number of bytes available in Modembuf */ short Outbuflen; /* Number of bytes currently stored in Outbuf */ short Rxframeind; /* ZBIN or ZHEX; type of frame received */ short Txfcs32; /* TRUE means send binary frame with 32 bit FCS */ short Rxflags; /* Temp register */ short Wantfcs32; /* want to send 32 bit FCS */ short Crc32t; /* Display flag indicates 32 bit CRC being sent */ short Crc32; /* Display flag indicates 32 bit CRC being recd */ short Rxtype; /* Type of header received */ short Rxcount; /* Count of data bytes received */ short Znulls; /* Number of nulls to send at begin of ZDATA hdr */ short ErrorLimit; /* How many sequential errors before abort */ char Rxbinary; /* Force binary mode download? */ char Rxascii; /* Force text mode download? */ char Thisbinary; /* Receive this file in binary mode? */ char Lzconv; /* Suggested binary/text mode for uploads */ char Eofseen; /* Text-mode EOF marker (^Z) rec'd on download? */ UBYTE Zconv; /* ZMODEM file conversion request */ UBYTE Zmanag; /* ZMODEM file management request */ UBYTE Ztrans; /* ZMODEM file transport request */ UBYTE Lastsent; /* Last text char written by putsec() */ UBYTE Lastzsent; /* Last char sent by zsendline() */ UBYTE Fileflush; /* Flush file I/O buffer before closing? */ UBYTE Attn[ZATTNLEN + 1]; /* Attention string rx sends to tx on err */ }; /* * Option settings and other variables needed outside of XProtocolSend/Receive; * separated from rest of Vars so that huge Vars struct doesn't have to be * allocated except during transfers. Pointer to this struct kept in xpr_data. */ struct SetupVars { UBYTE *matchptr, *bufpos; short buflen; UBYTE option_t[2], option_o[2], option_b[8], option_f[8], option_e[8], option_s[4]; UBYTE option_r[4], option_a[4], option_d[4], option_k[4], option_p[256]; }; /* Function prototypes */ long XProtocolSend(struct XPR_IO *xio); long XProtocolReceive(struct XPR_IO *xio); long XProtocolCleanup(struct XPR_IO *xio); struct Vars *setup(struct XPR_IO *io); UBYTE *find_option(UBYTE *buf, UBYTE option); void set_textmode(struct Vars *v); void canit(struct Vars *v); void zmputs(struct Vars *v, UBYTE *s); void xsendline(struct Vars *v, UBYTE c); void sendbuf(struct Vars *v); short readock(struct Vars *v, short tenths); char char_avail(struct Vars *v); void update_rate(struct Vars *v); long bfopen(struct Vars *v, UBYTE *mode); void bfclose(struct Vars *v); void bfseek(struct Vars *v, long pos); long bfread(struct Vars *v, UBYTE *buf, long length); long bfwrite(struct Vars *v, UBYTE *buf, long length); void ioerr(struct XPR_IO *io, char *msg); void upderr(struct Vars *v, char *msg); void updmsg(struct Vars *v, char *msg); #define getfree() (0x7fffffff) char exist(struct Vars *v); #ifdef DEBUGLOG void dlog(struct Vars *v, UBYTE *s); #endif void zsbhdr(struct Vars *v, USHORT type); void zshhdr(struct Vars *v, USHORT type); void zsdata(struct Vars *v, short length, USHORT frameend); int zrdata(struct Vars *v, UBYTE *buf, short length); int zrdat32(struct Vars *v, UBYTE *buf, short length); int zgethdr(struct Vars *v); int zrbhdr(struct Vars *v); int zrbhdr32(struct Vars *v); int zrhhdr(struct Vars *v); void zputhex(struct Vars *v, UBYTE c); void zsendline(struct Vars *v, UBYTE c); int zgethex(struct Vars *v); int zdlread(struct Vars *v); int noxrd7(struct Vars *v); void stohdr(struct Vars *v, long pos); long rclhdr(struct Vars *v); extern ULONG UnixTimeOffset; ULONG getsystime(struct timeval *tv); /* End of XprZmodem.h source */