📄 zm.c
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#include "zmodem.h"
#include "rbsb.h"
#include "zm.h"
#include "zport.h"
#include "basetype.h"
#include "memmap.h"
#include "regio.h"
#include "uart.h"
#include "uart_reg.h"
#include "Gextern.h"
#include "v2cfg.h"
#if defined(RZ_MODULE)
/* crctab calculated by Mark G. Mendel, Network Systems Corporation */
const static unsigned short crctab[256] = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};
#define updcrc(cp, crc) ( crctab[(((crc) >> 8) & 255)] ^ ((crc) << 8) ^ (cp))
const static unsigned long cr3tab[] = { /* CRC polynomial 0xedb88320 */
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
unsigned long UPDC32(int b, unsigned long c)
{
return (cr3tab[((int)c ^ b) & 0xff] ^ ((c >> 8) & 0x00FFFFFF));
}
int gfUseVHdrs; // use variable length headers
int gfCrc32; // Indicates/controls 32 bit CRC being received
// 0 == CRC16, 1 == CRC32, 2 == CRC32 + RLE
char gszAttn[ZATTNLEN+1];// Attention string rx sends to tx on err
int gzCtlEsc; // temporary declared here.
extern unsigned long UPDC32(int b, unsigned long c);
static int fTtyMode = 0;
void TtyMode(int m)
{
fTtyMode = (m) ? 1 : 0;
}
void Putc(char ch)
{
MS_DELAY(1);
Uart_RTS_Control(FALSE);
MS_DELAY(1);
while(!(IO32_GET(UART_STATUS0_REG_ADDR) & 0x2));
IO8_SET(UART_TX_BUF0_REG_ADDR, ch);
MS_DELAY(1);
Uart_RTS_Control(TRUE);
MS_DELAY(1);
}
int zGetch(int nTime)
{
int nData = -1, cur = 0;
/* poll until input is entered */
while(!(IO32_GET(UART_STATUS0_REG_ADDR) & 0x1))
{
MS_DELAY(1);
cur++;
if(nTime && (cur > nTime))
{
return -1;
}
}
if(!(IO32_GET(UART_STATUS0_REG_ADDR) & 0x1))
return -1;
else
nData = IO32_GET(UART_RX_BUF0_REG_ADDR);
return nData;
}
int Putch(char ch)
{
if(fTtyMode) return 1;
if(ch == '\n') Putc('\r');
Putc (ch);
return 1;
}
void zPutch(char ch)
{
if(!fTtyMode) return;
Putc (ch);
}
int Puts(const char *str)
{
int count = 0;
if(fTtyMode)
return 1;
while (*str){
count++;
Putch (*str++);
if (*str == '\n')
Putch ('\r');
}
return count;
}
///////////////////////////////////////////////////////////////////////////////
// void zSndHexHdr(int nLen, int nType, char *pHdrFlag)
// Send ZMODEM HEX header of type specified.
// argument nLen = length of header flags.
// nType = Z header type
// pHdrFlag = header flags/position.
void zSndHexHdr(int nLen, int nType, char *pHdrFlag)
{
int n;
unsigned short usCrc;
SendLine(ZPAD);
SendLine(ZPAD);
SendLine(ZDLE);
if(gfUseVHdrs)
{
SendLine(ZVHEX);
zPutHex(nLen);
}
else
SendLine(ZHEX);
zPutHex(nType);
usCrc = updcrc((char)nType, 0);
for(n = nLen; --n >= 0; ++pHdrFlag)
{
zPutHex(*pHdrFlag);
usCrc = updcrc((0377 & *pHdrFlag), usCrc);
}
usCrc = updcrc(0, updcrc(0, usCrc));
zPutHex(((int)(usCrc>>8)));
zPutHex(usCrc);
// make it printable on remote machine
SendLine(015); // 0x0d(CR)
SendLine(0212); // 0x8A
// Uncork the remote in case a fake XOFF has stopped data flow
if(nType != ZFIN && nType != ZACK)
SendLine(021); // 0x11
// if I/O is file operation
// fflush(Stream);
// PrintFile("\n");
}
///////////////////////////////////////////////////////////////////////////////
// int zRcvData(char *pBuf, int nLen, int *nRxCnt)
// Receive array of pBuf of maximum nLen with ending ZDLE sequence and CRC.
// nRxCnt is the output variable to store receving bytes actually.
// returns the ending character or error code.
// NB : On errors may store nLen+1 bytes
int zRcvData(char *pBuf, int nLen, int *nRxCnt)
{
int c;
unsigned short usCrc;
char *pEnd;
int d;
// int bZDLEesc = 0;
switch(gfCrc32)
{
case 1 :
return zRcvData32(pBuf, nLen, nRxCnt);
// case 2 :
// return zRcvDataRLE32(pBuf, nLen);
}
usCrc = 0;
*nRxCnt = 0; /* initialize */
pEnd = pBuf + nLen;
// bZDLEesc = 0;
while(pBuf <= pEnd)
{
if((c = zDLERead()) & ~0377)
{
/* ZDLE encoded */
while(1)
{
switch(c)
{
case GOTCRCE :
case GOTCRCG :
case GOTCRCQ :
case GOTCRCW :
/* frame end + next CRC-1, CRC-2 */
usCrc = updcrc((d=c)&0377, usCrc);
if((c = zDLERead()) & ~0377)
{
continue;
}
// zFPrintf_T("zRD : CRC : 0x%x ", c);
usCrc = updcrc(c, usCrc);
if((c = zDLERead()) & ~0377)
{
continue;
}
// zFPrintf_T("0x%x\n", c);
usCrc = updcrc(c, usCrc);
if(usCrc & 0xFFFF)
{
return ERROR;
}
/* nRxCnt is increased only if CRC is success */
*nRxCnt = nLen - (pEnd - pBuf);
return d;
case GOTCAN :
return ZCAN;
case TIMEOUT :
return c;
default :
return c;
} /* switch(c) */
} /* while(zDLEesc) */
}
/* not ZDLE encoded */
// zFPrintf_T("zRD : '%c'\n", c);
*pBuf++ = c;
usCrc = updcrc(c, usCrc);
} /* while(pBuf <= pEnd) */
return ERROR;
}
///////////////////////////////////////////////////////////////////////////////
// int zRcvData32(char *pBuf, int nLen, int *nRxCnt)
// Receive array of pBuf of maximum nLen with ending ZDLE sequence and 32-CRC.
// nRxCnt is the output variable to store receving bytes actually.
// returns the ending character or error code.
// NB : On errors may store nLen+1 bytes
int zRcvData32(char *pBuf, int nLen, int *nRxCnt)
{
int c;
unsigned long ulCrc;
char *pEnd;
int d;
int bZDLEesc;
ulCrc = 0xFFFFFFFFl;
*nRxCnt = 0; /* initialize */
pEnd = pBuf + nLen;
bZDLEesc = 0;
while(pBuf <= pEnd)
{
if((c = zDLERead()) & ~0377)
{
/* ZDLE encoded */
while(!bZDLEesc)
{
switch(c)
{
case GOTCRCE :
case GOTCRCG :
case GOTCRCQ :
case GOTCRCW :
d = c; // save temporary
c &= 0377;
ulCrc = UPDC32(c, ulCrc);
if((c = zDLERead()) & ~0377)
break;
ulCrc = UPDC32(c, ulCrc);
if((c = zDLERead()) & ~0377)
break;
ulCrc = UPDC32(c, ulCrc);
if((c = zDLERead()) & ~0377)
break;
ulCrc = UPDC32(c, ulCrc);
if((c = zDLERead()) & ~0377)
break;
ulCrc = UPDC32(c, ulCrc);
if(ulCrc != 0xDEBB20E3)
{
return ERROR;
}
*nRxCnt = nLen - (pEnd - pBuf);
return d;
case GOTCAN :
return ZCAN;
case TIMEOUT :
return c;
default :
return c;
} /* switch(c) */
} /* while(zDLEesc) */
}
/* not ZDLE encoded */
*pBuf++ = c;
ulCrc = UPDC32(c, ulCrc);
} /* while(pBuf <= pEnd) */
return ERROR;
}
///////////////////////////////////////////////////////////////////////////////
// int zGetHeader(char *pHdrFlag)
// Read a ZMODEM header to hdr, either binary or hex.
// Set gRxHdrLen to size of header (default 4, valid iff good hdr)
// On Success, set gRxPos and flags to pHdrFlag return type of header.
// Otherwise return negative on error.
// return ERROR instantly if ZCRCW sequence, for fast error recovery.
int zGetHeader(char *pHdrFlag)
{
int c, n;
int nGarbageCnt = RX_GARBAGE;
int nCanCount; /* count of successive CAN */
int bRxZPAD = 0; /* receive ZPAD */
int bRxZDLE = 0; /* receive ZDLE */
int bRxZHdr = 0;
int bIgnoreZPAD = 1; /* ignore ZPAD */
int nRxFrameInd; /* ZBIN ZBIN32, or ZHEX type of frame */
// int nRxHdrType; /* type of header received */
int nRxHdrLen; /* length of header recieved */
long lRxPos; /* received file position */
/* set start environment */
bRxZPAD = 0; /* not receive start ZPAD yet */
bRxZDLE = 0; /* not receive start ZDLE yet */
bRxZHdr = 0; /* not receive valid hdrLen + hdrType yet */
nCanCount = 5; /* successive zCanCount 5 is escape condition */
/* receive until '*' + 030 sequence */
// zFPrintf_T("zGH i\n");
while(!bRxZHdr)
{
// until valid header sequence "* 030 hdrLength hdrType" meets */
while(!bRxZPAD || !bRxZDLE)
{
switch(c = ReadLine(RX_TIMEOUT))
{
case 021 :
case 0221 :
/* ignore and just again */
break;
case RCD0 :
case TIMEOUT :
/* finish up */
return zRcvFin(c);
case CAN :
gotcan :
if(--nCanCount <= 0)
{
c = ZCAN;
return zRcvFin(c);
}
switch(c = ReadLine(RX_TIMEOUT))
{
case TIMEOUT :
/* just again */
break;
case ZCRCW :
switch(c = ReadLine(RX_TIMEOUT))
{
case TIMEOUT :
c = ERROR;
return zRcvFin(c);
case RCD0 :
return zRcvFin(c);
default :
if(--nGarbageCnt == 0)
{
c = GCOUNT;
return zRcvFin(c);
}
/* start over */
bRxZPAD = bRxZDLE = bRxZHdr = 0;
nCanCount = 5;
break;
}
break;
case RCD0 :
return zRcvFin(c);
case CAN :
if(--nCanCount <= 0)
{
c = ZCAN;
return zRcvFin(c);
}
break;
default :
if(--nGarbageCnt == 0)
{
c = GCOUNT;
return zRcvFin(c);
}
/* start over */
bRxZPAD = bRxZDLE = bRxZHdr = 0;
nCanCount = 5;
break;
}
break;
case ZPAD :
bRxZPAD = 1; /* we got ZPAD */
bIgnoreZPAD = 1; /* ignore successive zpad */
nCanCount = 5;
while(bIgnoreZPAD)
{
switch(c = zReadChar())
{
case ZPAD :
break;
case RCD0 :
case TIMEOUT :
return zRcvFin(c);
case ZDLE :
bIgnoreZPAD = 0; /* escape from while */
bRxZDLE = 1;
break;
default :
bIgnoreZPAD = 0; /* escape from while */
bRxZPAD = 0; /* and start again from ZPAD */
if(--nGarbageCnt == 0)
{
c = GCOUNT;
return zRcvFin(c);
}
/* start over */
bRxZPAD = bRxZDLE = bRxZHdr = 0;
nCanCount = 5;
break;
}
}
break;
default :
if(--nGarbageCnt == 0)
{
c = GCOUNT;
return zRcvFin(c);
}
/* start over */
bRxZPAD = bRxZDLE = bRxZHdr = 0;
nCanCount = 5;
}
} /* while(!bRxZPAD && !bRxZDLE ) */
nRxHdrLen = 4; /* set default length */
nRxFrameInd = c = zReadChar();
/* receive each header type, respectively */
switch(c)
{
case ZVBIN32 :
if((nRxHdrLen = c = zDLERead()) < 0)
return zRcvFin(c);
if(c > ZMAXHLEN)
{ /* invalid header length */
if(--nGarbageCnt == 0)
{
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