📄 zmodem.c
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/*****************************************************************
Filename: zmodem.c
Description:
****************************************************************/
#include <vxWorks.h>
#include <ioLib.h>
#include <tyLib.h>
#include <stdio.h>
#include <tickLib.h>
#include "zmodem.h"
/*--------------------------------------------------------------------------*/
/* Contro Text define */
/*--------------------------------------------------------------------------*/
static const int ZPAD = '*'; /* 052 Pad character begins frames */
static const int ZDLE = 030; /* ^X Zmodem escape- `ala BISYNC DLE */
static const int ZDLEE = ZDLE^0100 ; /* Escaped ZDLE as transmitted */
static const int ZBIN = 'A'; /* Binary frame indicator */
static const int ZHEX = 'B'; /* HEX frame indicator */
static const int ZBIN32 = 'C'; /* Binary frame with 32 bit FCS */
/*--------------------------------------------------------------------------*/
/* Frame types (see array "frametypes" in zmodem.c) */
/*--------------------------------------------------------------------------*/
static const int ZRQINIT = 0; /* Request receive init */
static const int ZRINIT = 1; /* Receive init */
static const int ZSINIT = 2; /* Send init sequence (optional) */
static const int ZACK = 3; /* ACK to above */
static const int ZFILE = 4; /* File name from sender */
static const int ZSKIP = 5; /* To sender: skip this file */
static const int ZNAK = 6; /* Last packet was garbled */
static const int ZABORT = 7; /* Abort batch transfers */
static const int ZFIN = 8; /* Finish session */
static const int ZRPOS = 9; /* Resume transmit at this position */
static const int ZDATA = 10; /* Data packet(s) follow */
static const int ZEOF = 11; /* End of file */
static const int ZFERR = 12; /* Fatal Read/Write error Detected *//*not use*/
static const int ZCRC = 13; /* Request for file CRC and response */
static const int ZCHALLENGE = 14; /* Receiver's Challenge */
static const int ZCOMPL = 15; /* Request is complete */
static const int ZCAN = 16; /* Other end canned with CAN*5 */
static const int ZFREECNT = 17; /* Request for free bytes on disk */
static const int ZCOMMAND = 18; /* Command from sending program */
static const int ZSTDERR = 19; /* Send following to stderr */
/*--------------------------------------------------------------------------*/
/* ZDLE sequences frameend type in subpacket */
/*--------------------------------------------------------------------------*/
static const int ZCRCE = 'h'; /* CRC next/frame ends/hdr follows */
static const int ZCRCG = 'i'; /* CRC next/frame continues nonstop */
static const int ZCRCQ = 'j'; /* CRC next/frame continues/want ZACK*/
static const int ZCRCW = 'k'; /* CRC next/ZACK expected/end of frame*/
static const int ZRUB0 = 'l'; /* Translate to rubout 0177 */
static const int ZRUB1 = 'm'; /* Translate to rubout 0377 */
/*--------------------------------------------------------------------------*/
/* zGetZDL return values (internal) */
/* -1 is general error, -2 is timeout */
/*--------------------------------------------------------------------------*/
static const int GOTOR = 0400; /* Octal alert! Octal alert! */
static const int GOTCRCE = (ZCRCE|GOTOR); /* ZDLE-ZCRCE received */
static const int GOTCRCG = (ZCRCG|GOTOR); /* ZDLE-ZCRCG received */
static const int GOTCRCQ = (ZCRCQ|GOTOR); /* ZDLE-ZCRCQ received */
static const int GOTCRCW = (ZCRCW|GOTOR); /* ZDLE-ZCRCW received */
static const int GOTCAN = (GOTOR|030) ; /* CAN*5 seen */
/*--------------------------------------------------------------------------*/
/* Byte positions within header array */
/*--------------------------------------------------------------------------*/
static const int ZF0 = 3; /* First flags byte */
static const int ZF1 = 2;
static const int ZF2 = 1;
static const int ZF3 = 0;
static const int ZP0 = 0; /* Low order 8 bits of position */
static const int ZP1 = 1;
static const int ZP2 = 2;
static const int ZP3 = 3; /* High order 8 bits of file pos */
/*--------------------------------------------------------------------------*/
/* Bit Masks for ZRINIT flags byte ZF0 */
/*--------------------------------------------------------------------------*/
static const int CANFDX = 01; /* Can send and receive true FDX */
static const int CANOVIO = 02; /* Can receive data during disk I/O */
static const int CANBRK = 04; /* Can send a break signal *//* not use */
static const int CANCRY = 010; /* Can decrypt *//* not use */
static const int CANLZW = 020; /* Can uncompress *//* not use */
static const int CANFC32 = 040; /* Can use 32 bit Frame Check *//* not use */
/*--------------------------------------------------------------------------*/
/* PARAMETERS FOR ZFILE FRAME... */
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* Conversion options one of these in ZF0 */
/*--------------------------------------------------------------------------*/
static const int ZCBIN = 1; /* Binary transfer - no conversion */
static const int ZCNL = 2; /* Convert NL to local EOLN *//* not use */
static const int ZCRESUM = 3; /* Resume interrupted file transfer *//* not use */
/*--------------------------------------------------------------------------*/
/* Management options, one of these in ZF1 */
/*--------------------------------------------------------------------------*/
static const int ZMNEW = 1; /* Transfer iff source newer/longer *//* not use */
static const int ZMCRC = 2; /* Transfer if different CRC/length *//* not use */
static const int ZMAPND = 3; /* Append contents to existing file *//* not use */
static const int ZMCLOB = 4; /* Replace existing file *//* not use */
static const int ZMSPARS = 5; /* Encoding for sparse file *//* not use */
static const int ZMDIFF = 6; /* Transfer if dates/lengths differ *//* not use */
static const int ZMPROT = 7; /* Protect destination file *//* not use */
/*--------------------------------------------------------------------------*/
/* Transport options, one of these in ZF2 */
/*--------------------------------------------------------------------------*/
static const int ZTLZW = 1; /* Lempel-Ziv compression *//* not use */
static const int ZTCRYPT = 2; /* Encryption *//* not use */
static const int ZTRLE = 3; /* Run Length encoding *//* not use */
/*--------------------------------------------------------------------------*/
/* Parameters for ZCOMMAND frame ZF0 (otherwise 0) */
/*--------------------------------------------------------------------------*/
static const int ZCACK1 = 1 ; /* Acknowledge, then do command *//* not use */
/*--------------------------------------------------------------------------*/
/* Miscellaneous definitions */
/*--------------------------------------------------------------------------*/
static const int ZZOK = 0;
static const int ZZERROR = -1;
static const int ZZTIMEOUT = -2;
static const int ZZRCDO = -3;
static const int ZZFUBAR = -4;
static const int XON = 'Q'&037;
static const int XOFF = 'S'&037;
static const int CPMEOF = 'Z'&037; /* not used */ /* not use */
static const int RXBINARY = false; /* Force binary mode uploads? *//* not use */
static const int RXASCII = false; /* Force ASCII mode uploads? *//* not use */
static const int LZCONV = 0; /* Default ZMODEM conversion mode */
static const int LZMANAG = 0; /* Default ZMODEM file mode */
static const int LZTRANS = 0; /* Default ZMODEM transport mode */
static const int PATHLEN = 128; /* Max legal MS-DOS path size? *//* not use */
static const int KSIZE = 1024; /* Max packet size (non-WaZOO) *//* not use */
static const int WAZOOMAX = 8192; /* Max packet bit size (WaZOO) 128bytes */
static const int SECSPERDAY = (24L*60L*60L); /* Number of seconds in one day *//* not use */
/*--------------------------------------------------------------------------*/
/* ASCII MNEMONICS */
/*--------------------------------------------------------------------------*/
static const int NUL = 0x00;
static const int SOH = 0x01;
static const int STX = 0x02;
static const int ETX = 0x03;
static const int EOT = 0x04;
static const int ENQ = 0x05;
static const int ACK = 0x06;
static const int BEL = 0x07;
static const int BS = 0x08;
static const int HT = 0x09;
static const int LF = 0x0a;
static const int VT = 0x0b;
static const int FF = 0x0c;
static const int CR = 0x0d;
static const int SO = 0x0e;
static const int SI = 0x0f;
static const int DLE = 0x10;
static const int DC1 = 0x11;
static const int DC2 = 0x12;
static const int DC3 = 0x13;
static const int DC4 = 0x14;
static const int NAK = 0x15;
static const int SYN = 0x16;
static const int ETB = 0x17;
static const int CAN = 0x18;
static const int EM = 0x19;
static const int SUB = 0x1a;
static const int ESC = 0x1b;
static const int FS = 0x1c;
static const int GS = 0x1d;
static const int RS = 0x1e;
static const int US = 0x1f;
static const int ZATTNLEN = 32 ; /* Max length of attention string */
static const int WAZOOMAX = 8192 ; /* Max packet size (WaZOO) */
static char gpcAttn[ZATTNLEN+1]; /* String rx sends to tx on err */
static char gcZconv; /* ZMODEM file conversion request */
static char gpcRecBuf[64]; /* Pointer to receive buffer */
static int giRxType; /* Type of header received */
static char gcRxframeType; /* ZBIN ZBIN32,ZHEX type of frame received */
static char gcTryZhdrType; /* Hdr type to send for Last rx close */
static int giRxCount; /* Count of data bytes received */
static char gpcRxhdr[4]; /* Received header */
static char gpcTxhdr[4]; /* Transmitted header */
static int giRxpos; /* Received file position */
static int giRecBytes; /* bytes of data received */
static int giFilesize;
static char gpcFilename[ 32 ];
static bool gbTimeOut = false;
static int giTaskIdZmodemRev = ERROR;
static int giComFd = ERROR;
staitc int giFdRevFile = ERROR;
int zmodemRcvInit( void )
{
if( giComFd == ERROR )
{
if( ( giComFd = open( "/tyCo/4", O_RDWR , 0 ) ) == ERROR )
{
printf("[ comRcvFileInit ] : Creat Com failure.\n" );
zmodemRcvDInit( );
return( 0 );
}
if( ioctl( giComFd, FIOBAUDRATE, 115200 ) == ERROR )
{
printf(" [ comRcvFileInit ]: set the BAUD ERROR.\n");
zmodemRcvDInit( );
return( 0 );
}
}
if( giTaskIdZmodemRev == ERROR )
{
giTaskIdZmodemRev = taskSpawn( "zmodemRcv", 120, 0x100, 0x20000,( FUNCPTR )zGetZmodem,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
if( giTaskIdZmodemRev == ERROR )
{
printf(" [ comRcvFileInit ]: Create task ERROR.\n");
zmodemRcvDInit( );
return( 0 );
}
}
return( 1 );
}
int zmodemRcvDInit( void )
{
if( giTaskIdZmodemRev != ERROR )
{
if( taskDelete( giTaskIdZmodemRev ) == ERROR )
{
printf("[ zmodemRcvDInit ]: Delete taskRev Error.\n");
}
giTaskIdZmodemRev = ERROR;
}
if( giComFd != ERROR )
{
if( close( giComFd ) == ERROR )
{
printf("[ zmodemRcvDInit ]: close Com Error.\n");
}
giComFd = ERROR;
}
if( fdList != ERROR )
{
close( fdList );
}
return( 1 );
}
static int zSendChar( unsigned char cData )
{
if( giComFd != ERROR )
{
if( write( giComFd, &cData, 1 ) == 1 )
{
return( 1 );
}
}
else
{
return ( 0 );
}
}
static int zTestOneByte( void )
{
return( ioctl( giComFd, FIONREAD, 0 ) );
}
static void zClearByte( void )
{
ioctl( giComFd, FIOFLUSH, 0 );
}
static int zGetOneByte( void )
{
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