rsalz@uunet.uu.net (Rich Salz) (06/15/88)
Submitted-by: Steve Grandi <grandi@noao.arizona.edu> Posting-number: Volume 15, Issue 72 Archive-name: xmodem3.6/part03 : This is a shar archive. Extract with sh, not csh. echo x - getput.c sed -e 's/^X//' > getput.c << '!Funky!Stuff!' X/* X * Contains system routines to get and put bytes, change tty modes, etc X * Most of the routines are VERY 4.2BSD Specific!!! X */ X X#include "xmodem.h" X X/* X * X * Get a byte from the specified file. Buffer the read so we don't X * have to use a system call for each character. X * X */ Xgetbyte(fildes, ch) /* Buffered disk read */ Xint fildes; Xchar *ch; X X { X static char buf[BUFSIZ]; /* Remember buffer */ X static char *bufp = buf; /* Remember where we are in buffer */ X X if (nbchr == 0) /* Buffer exausted; read some more */ X { X if ((nbchr = read(fildes, buf, BUFSIZ)) < 0) X error("File Read Error", TRUE); X bufp = buf; /* Set pointer to start of array */ X } X if (--nbchr >= 0) X { X *ch = *bufp++; X return(0); X } X else X { X return(EOF); X } X } X X/* Count the number of newlines in a file so we know the REAL file size */ X Xlong Xcountnl(fd) Xint fd; X{ X char buf[BUFSIZ]; X char *bufp; X long nltot = 0; X int numchar; X long lseek(); X X while (numchar = read(fd, buf, BUFSIZ)) /* cycle through file */ X for (bufp=buf; numchar--; bufp++) X if (*bufp == '\n') X nltot++; X X (void) lseek (fd, 0l, 0); /* rewind file */ X if (DEBUG) X fprintf(LOGFP, "DEBUG: countnl--%ld newlines counted\n", nltot); X return (nltot); X} X X/* CRC-16 constant array... X from Usenet contribution by Mark G. Mendel, Network Systems Corp. X (ihnp4!umn-cs!hyper!mark) X*/ X X/* crctab as calculated by initcrctab() */ Xunsigned short crctab[1<<B] = { X 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, X 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, X 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, X 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, X 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, X 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, X 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, X 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, X 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, X 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, X 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, X 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, X 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, X 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, X 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, X 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, X 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, X 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, X 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, X 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, X 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, X 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, X 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, X 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, X 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, X 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, X 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, X 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, X 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, X 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, X 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, X 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 X }; X X/* get a byte from data stream -- timeout if "seconds" elapses */ X/* This routine is VERY 4.2 specific */ X Xint Xreadbyte(seconds) Xint seconds; X { X int readfd; X char c; X struct timeval tmout; X X tmout.tv_sec = seconds; X tmout.tv_usec = 0; X X readfd = 1<<0; X X if ((select(1, &readfd, (int *)0, (int *)0, &tmout)) == 0) X return(TIMEOUT); X X read(0, &c, 1); X X if (DEBUG) X fprintf(LOGFP, "DEBUG: readbyte %02xh\n", c & 0xff); X X return(c & 0xff); /* return the char */ X } X X/* flush input stream by reading pending characters */ X Xflushin() X { X int readfd; X char inbuf[BBUFSIZ]; X struct timeval tmout; X X /* set up a usec timeout on stdin */ X tmout.tv_sec = 0; X tmout.tv_usec = 1; X readfd = 1<<0; X X /* any characters pending?; return if none */ X if ((select(1, &readfd, (int *)0, (int *)0, &tmout)) == 0) X return; X X /* read the characters to flush them (assume there are fewer than BBUFSIZ */ X (void) read(0, inbuf, BBUFSIZ); X } X X/* X get a buffer (length bufsize) from data stream -- timeout if "seconds" elapses. X Read bunches of characters to save system overhead; X Further process data while kernel is reading stream (calculating "checksum"). X Try to nap long enough so kernel collects 100 characters or so until we wake up X unless TOOBUSY is set. X*/ X X/* This routine is VERY 4.2 specific */ X Xint Xreadbuf(bufsize, seconds, tmode, amode, recvsectcnt, checksum, bufctr) X Xint bufsize, /* number of chars to be read */ Xseconds, /* timeout period for each read */ Xtmode, /* transmission mode: TRUE if text */ Xamode, /* transmission mode: TRUE if apple macintosh */ X*checksum, /* pointer to checksum value */ X*bufctr; /* length of actual data string in buffer */ Xlong recvsectcnt; /* running sector count (128 byte sectors) */ X X{ X int readfd; /* mask for select call */ X struct timeval tmout; /* timeout structure for select */ X int numread; /* number of chars read */ X int left; /* number of chars left to read */ X int recfin = FALSE; /* flag that EOF read */ X char inbuf[BBUFSIZ]; /* buffer for incoming packet */ X register unsigned char c; /* character being processed */ X register unsigned short chksm; /* working copy of checksum */ X register int bfctr; /* working copy of bufctr */ X int j; /* loop index */ X char *sectdisp(); X X tmout.tv_sec = seconds; X tmout.tv_usec = 0; X readfd = 1<<0; X chksm = 0; X bfctr = 0; X X for (left = bufsize; left > 0;) { X X /* read however many chars are waiting */ X X if ((select(1, &readfd, (int *)0, (int *)0, &tmout)) == 0) X return(TIMEOUT); X X numread = read(0, inbuf, left); X left -= numread; X X if (DEBUG) X fprintf(LOGFP, "DEBUG: readbuf--read %d characters\n", numread); X X /* now process part of packet we just read */ X X for (j = 0; j < numread; j++) X { X buff[bfctr] = c = inbuf[j] & 0xff; X fileread++; X X if (CRCMODE) /* CRC */ X chksm = (chksm<<B) ^ crctab[(chksm>>(W-B)) ^ c]; X X else /* checksum */ X chksm = ((chksm+c) & 0xff); X X if (CHECKLENGTH && fileread > filelength) /* past EOF ? */ X continue; X X if (tmode) /* text mode processing */ X { X buff[bfctr] &= 0x7f; /* nuke bit 8 */ X if (c == CR || c == 0) /* skip CRs and nulls */ X continue; X else if (c == CTRLZ) /* CP/M EOF char */ X { X recfin = TRUE; X continue; X } X else if (!recfin) /* don't increment if past EOF */ X bfctr++; X } X else if (amode) /* Apple macintosh text mode processing */ X { X buff[bfctr] &= 0x7f; /* nuke bit 8 */ X if (c == 0) /* skip nulls */ X continue; X else if (c == CR) /* translate CR to LF */ X buff[bfctr] = LF; X else if (c == CTRLZ) /* CP/M EOF char */ X { X recfin = TRUE; X continue; X } X if (!recfin) /* don't increment if past EOF */ X bfctr++; X } X else /* binary */ X bfctr++; X X } X X /* go to sleep to save uneeded system calls while kernel X is reading data from serial line; X fudge constant from 10000 to 9000 to avoid sleeping too long. X */ X if (left && !TOOBUSY) X napms( (left<SLEEPNUM ? left:SLEEPNUM) * 9000/ttyspeed); X X } X X if (CHECKLENGTH && fileread >= filelength) X logitarg("File end from YMODEM length found in sector %s\n", X sectdisp(recvsectcnt,bufsize,1)); X *checksum = chksm; X *bufctr = bfctr; X return(0); X} X X/* send a byte to data stream */ X Xsendbyte(data) Xchar data; X { X if (DEBUG) X fprintf(LOGFP, "DEBUG: sendbyte %02xh\n", data & 0xff); X X if (write(1, &data, 1) != 1) /* write the byte (assume it goes NOW; no flushing needed) */ X error ("Write error on stream", TRUE); X return; X } X X/* send a buffer to data stream */ X Xwritebuf(buffer, nbytes) Xchar *buffer; Xint nbytes; X { X if (DEBUG) X fprintf(LOGFP, "DEBUG: writebuf (%d bytes)\n", nbytes); X X if (write(1, buffer, nbytes) != nbytes) /* write the buffer (assume no TIOCFLUSH needed) */ X error ("Write error on stream", TRUE); X return; X } X X/* X * "nap" for specified time -- VERY 4.2BSD specific X */ X Xnapms (milliseconds) Xint milliseconds; X{ X struct timeval timeout; X int readfd; X X if (milliseconds == 0) X return; X if (DEBUG) X fprintf (LOGFP, "DEBUG: napping for %d ms\n", milliseconds); X timeout.tv_sec = 0; X timeout.tv_usec = milliseconds * 1000; X readfd = 0; X X (void) select(1, &readfd, (int *)0, (int *)0, &timeout); X} X X X/* set and restore tty modes for XMODEM transfers */ X/* These routines are 4.2/v7(?) specific */ X Xstruct sgttyb ttys, ttysnew; /* for stty terminal mode calls */ Xstruct stat statbuf; /* for terminal message on/off control */ X Xint wason; /* holds status of tty read write/modes */ Xchar *tty; /* current tty name */ X X Xsetmodes() X { X char *ttyname(); X X int n; X X extern onintr(); X X sleep(2); /* let the output appear */ X if (ioctl(0,TIOCGETP,&ttys)<0) /* get tty params [V7] */ X error("Can't get TTY Parameters", TRUE); X X tty = ttyname(0); /* identify current tty */ X X ttysnew.sg_ispeed = ttys.sg_ispeed; /* copy input speed */ X ttysnew.sg_ospeed = ttys.sg_ospeed; /* copy input speed */ X ttysnew.sg_flags |= RAW; /* set for RAW Mode */ X ttysnew.sg_flags &= ~ECHO; /* set for no echoing */ X ttysnew.sg_flags &= ~TANDEM; /* turn off flow control */ X X /* set new paramters */ X if (ioctl(0,TIOCSETP,&ttysnew) < 0) X error("Can't set new TTY Parameters", TRUE); X X /* Flush characters waiting for read or write */ X n = 0; X if (ioctl(0,TIOCFLUSH,&n) < 0) X error("Can't flush terminal queue", TRUE); X X /* get tty status */ X if (stat(tty, &statbuf) < 0) X error("Can't get your TTY Status", TRUE); X X if (statbuf.st_mode & 022) /* Need to turn messages off */ X if (chmod(tty, (int)statbuf.st_mode & ~022) < 0) X error("Can't change TTY mode", TRUE); X else X wason = TRUE; X else X wason = FALSE; X X /* set up signal catcher to restore tty state if we are KILLed */ X X if (signal(SIGTERM, SIG_IGN) != SIG_IGN) X signal(SIGTERM, onintr); X } X X/* restore normal tty modes */ X Xrestoremodes(errcall) Xint errcall; X { X if (wason) X if (chmod(tty, (int)statbuf.st_mode | 022) < 0) X error("Can't change TTY mode", FALSE); X if (ioctl(0,TIOCSETP,&ttys) < 0) X { if (!errcall) X error("RESET - Can't restore normal TTY Params", FALSE); X else X printf("RESET - Can't restore normal TTY Params\n"); X } X if (signal(SIGTERM, SIG_IGN) != SIG_IGN) X signal(SIGTERM, SIG_DFL); X return; X } X X X X X/* signal catcher */ Xonintr() X { X error("Kill signal; bailing out", TRUE); X } X X/* create string with a timestamp for log file */ X Xchar *stamptime() X{ X char *asctime(); /* stuff to get timestamp */ X struct tm *localtime(), *tp; X struct timeval tv; X struct timezone tz; X X gettimeofday (&tv, &tz); /* fill in timestamp */ X tp = localtime ((time_t *)&tv.tv_sec); X return(asctime(tp)); X} X X X X/* get tty speed for time estimates */ X Xgetspeed() X { X static int speedtbl[] = {0, 50, 75, 110, 134, 150, 200, 300, 600, X 1200, 1800, 2400, 4800, 9600, 19200, 0}; X if (ioctl(0,TIOCGETP,&ttys) < 0) /* get tty structure */ X error("Can't get TTY parameters", FALSE); X X if (ttys.sg_ispeed >= 0 && ttys.sg_ispeed <= 14) X { X ttyspeed = speedtbl[ttys.sg_ispeed]; X logitarg ("Line speed = %d bits per second\n", ttyspeed); X } X else X { X ttyspeed = 1200; X logit ("Can't determine line speed; assuming 1200 bps\n"); X } X } !Funky!Stuff! echo x - getput.sysv.c sed -e 's/^X//' > getput.sysv.c << '!Funky!Stuff!' X/* X * Contains system routines to get and put bytes, change tty modes, etc X * Sys V version. UNTESTED!!!!!! X */ X X#include "xmodem.h" X X/* X * X * Get a byte from the specified file. Buffer the read so we don't X * have to use a system call for each character. X * X */ Xgetbyte(fildes, ch) /* Buffered disk read */ Xint fildes; Xchar *ch; X X { X static char buf[BUFSIZ]; /* Remember buffer */ X static char *bufp = buf; /* Remember where we are in buffer */ X X if (nbchr == 0) /* Buffer exausted; read some more */ X { X if ((nbchr = read(fildes, buf, BUFSIZ)) < 0) X error("File Read Error", TRUE); X bufp = buf; /* Set pointer to start of array */ X } X if (--nbchr >= 0) X { X *ch = *bufp++; X return(0); X } X else X { X return(EOF); X } X } X X/* Count the number of newlines in a file so we know the REAL file size */ X Xlong Xcountnl(fd) Xint fd; X{ X char buf[BUFSIZ]; X char *bufp; X long nltot = 0; X int numchar; X long lseek(); X X while (numchar = read(fd, buf, BUFSIZ)) /* cycle through file */ X for (bufp=buf; numchar--; bufp++) X if (*bufp == '\n') X nltot++; X X (void) lseek (fd, 0l, 0); /* rewind file */ X if (DEBUG) X fprintf(LOGFP, "DEBUG: countnl--%ld newlines counted\n", nltot); X return (nltot); X} X X/* CRC-16 constant array... X from Usenet contribution by Mark G. Mendel, Network Systems Corp. X (ihnp4!umn-cs!hyper!mark) X*/ X X/* crctab as calculated by initcrctab() */ Xunsigned short crctab[1<<B] = { X 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, X 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, X 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, X 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, X 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, X 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, X 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, X 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, X 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, X 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, X 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, X 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, X 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, X 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, X 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, X 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, X 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, X 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, X 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, X 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, X 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, X 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, X 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, X 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, X 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, X 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, X 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, X 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, X 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, X 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, X 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, X 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 X }; X X/* get a byte from data stream -- timeout if "seconds" elapses */ X Xint timedout; X Xint Xreadbyte(seconds) Xint seconds; X{ X int force_it(); X char c; X signal(SIGALRM, force_it); X X timedout = 0; X alarm(seconds); X read(0, &c, 1); X alarm(0); X if (timedout) X return(TIMEOUT); X if (DEBUG) X fprintf(LOGFP, "DEBUG: readbyte %02xh\n", c & 0xff); X return(c & 0xff); X} X Xint Xforce_it() X{ X timedout++; X return; X} X X X/* flush input stream */ X Xflushin() X { X/* No good way to do this without select */ X/* Perhaps....but we waste 1 second with every call! X while (readbyte(1) != TIMEOUT) X ; X*/ X } X X/* X get a buffer (length bufsize) from data stream -- timeout if "seconds" elapses. X Read bunches of characters to save system overhead; X Further process data while kernel is reading stream (calculating "checksum"). X Try to nap long enough so kernel collects 100 characters or so until we wake up X unless TOOBUSY is set. X*/ X X Xint Xreadbuf(bufsize, seconds, tmode, amode, recvsectcnt, checksum, bufctr) X Xint bufsize, /* number of chars to be read */ Xseconds, /* timeout period for each read */ Xtmode, /* transmission mode: TRUE if text */ Xamode, /* transmission mode: TRUE if apple macintosh */ X*checksum, /* pointer to checksum value */ X*bufctr; /* length of actual data string in buffer */ Xlong recvsectcnt; /* running sector count (128 byte sectors) */ X X{ X int force_it(); X int numread; /* number of chars read */ X int left; /* number of chars left to read */ X int recfin = 0; /* flag that EOF read */ X char inbuf[BBUFSIZ]; /* buffer for incoming packet */ X register unsigned char c; /* character being processed */ X register unsigned short chksm; /* working copy of checksum */ X register int bfctr; /* working copy of bufctr */ X int j; /* loop index */ X char *sectdisp(); X X signal(SIGALRM, force_it); X chksm = 0; X bfctr = 0; X X for (left = bufsize; left > 0;) { X X /* read however many chars are waiting */ X timedout = 0; X alarm(seconds); X numread = read(0, inbuf, left); X alarm(0); X if (timedout) X return(TIMEOUT); X left -= numread; X X if (DEBUG) X fprintf(LOGFP, "DEBUG: readbuf--read %d characters\n", numread); X X /* now process part of packet we just read */ X X for (j = 0; j < numread; j++) X { X buff[bfctr] = c = inbuf[j] & 0xff; X fileread++; X X if (CRCMODE) /* CRC */ X chksm = (chksm<<B) ^ crctab[(chksm>>(W-B)) ^ c]; X X else /* checksum */ X chksm = ((chksm+c) & 0xff); X X if (CHECKLENGTH && fileread > filelength) /* past EOF ? */ X continue; X X if (tmode) /* text mode processing */ X { X buff[bfctr] &= 0x7f; /* nuke bit 8 */ X if (c == CR || c == 0) /* skip CRs and nulls */ X continue; X else if (c == CTRLZ) /* CP/M EOF char */ X { X recfin = TRUE; X continue; X } X else if (!recfin) /* don't increment if past EOF */ X bfctr++; X } X else if (amode) /* Apple macintosh text mode processing */ X { X buff[bfctr] &= 0x7f; /* nuke bit 8 */ X if (c == 0) /* skip nulls */ X continue; X else if (c == CR) /* translate CR to LF */ X buff[bfctr] = LF; X else if (c == CTRLZ) /* CP/M EOF char */ X { X recfin = TRUE; X continue; X } X if (!recfin) /* don't increment if past EOF */ X bfctr++; X } X else /* binary */ X bfctr++; X X } X X /* go to sleep to save uneeded system calls while kernel X is reading data from serial line, fudge constant from 10 to X 9 to avoid sleeping too long X */ X if (left && !TOOBUSY) X sleep ((left<SLEEPNUM ? left:SLEEPNUM) * 9/ttyspeed); X } X X if (CHECKLENGTH && fileread >= filelength) X logitarg("File end from YMODEM length found in sector %s\n", X sectdisp(recvsectcnt,bufsize,1)); X *checksum = chksm; X *bufctr = bfctr; X return(0); X} X X/* send a byte to data stream */ X Xsendbyte(data) Xchar data; X { X if (DEBUG) X fprintf(LOGFP, "DEBUG: sendbyte %02xh\n", data & 0xff); X X if (write(1, &data, 1) != 1) /* write the byte (assume it goes NOW; no flushing needed) */ X error ("Write error on stream", TRUE); X return; X } X X/* send a buffer to data stream */ X Xwritebuf(buffer, nbytes) Xchar *buffer; Xint nbytes; X { X if (DEBUG) X fprintf(LOGFP, "DEBUG: writebuf (%d bytes)\n", nbytes); X X if (write(1, buffer, nbytes) != nbytes) /* write the buffer (assume no TIOCFLUSH needed) */ X error ("Write error on stream", TRUE); X return; X } X X/* set and restore tty modes for XMODEM transfers */ X Xstruct termio ttys; Xstruct stat statbuf; /* for terminal message on/off control */ X Xint wason; /* holds status of tty read write/modes */ Xchar *tty; /* current tty name */ X X Xsetmodes() X { X char *ttyname(); X struct termio ttysnew; X X extern onintr(); X X sleep(2); /* let the output appear */ X if (ioctl(0,TCGETA,&ttys)<0) /* get tty params */ X error("Can't get TTY Parameters", TRUE); X X tty = ttyname(0); /* identify current tty */ X X if (ioctl(0,TCGETA,&ttysnew)<0) /* get tty params */ X error("Can't get TTY Parameters", TRUE); X ttysnew.c_cc[4] = 1; /* VMIN */ X ttysnew.c_cc[5] = 0; /* VTIME */ X ttysnew.c_iflag = 0; X ttysnew.c_oflag = 0; X ttysnew.c_lflag = 0; X ttysnew.c_cflag &= ~CSIZE; X ttysnew.c_cflag |= CS8; X ttysnew.c_cflag &= ~PARENB; X if (ioctl(0,TCSETA,&ttysnew)<0) /* set new paramters */ X error("Can't set new TTY Parameters", TRUE); X X if (stat(tty, &statbuf) < 0) /* get tty status */ X error("Can't get your TTY Status", TRUE); X X if (statbuf.st_mode & 022) /* Need to turn messages off */ X if (chmod(tty, (int)statbuf.st_mode & ~022) < 0) X error("Can't change TTY mode", TRUE); X else X wason = TRUE; X else X wason = FALSE; X X /* set up signal catcher to restore tty state if we are KILLed */ X X if (signal(SIGTERM, SIG_IGN) != SIG_IGN) X signal(SIGTERM, onintr); X } X X/* restore normal tty modes */ X Xrestoremodes(errcall) Xint errcall; X { X if (wason) X if (chmod(tty, (int)statbuf.st_mode | 022) < 0) X error("Can't change TTY mode", FALSE); X if (ioctl(0,TCSETA,&ttys) < 0) X { if (!errcall) X error("RESET - Can't restore normal TTY Params", FALSE); X else X printf("RESET - Can't restore normal TTY Params\n"); X } X if (signal(SIGTERM, SIG_IGN) != SIG_IGN) X signal(SIGTERM, SIG_DFL); X return; X } X X X X X/* signal catcher */ Xonintr() X { X error("Kill signal; bailing out", TRUE); X } X X/* create string with a timestamp for log file */ X Xchar *stamptime() X{ X char *asctime(); /* stuff to get timestamp */ X struct tm *localtime(), *tp; X long now; X X time(&now); X tp = localtime(&now); X return(asctime(tp)); X} X X X X/* get tty speed for time estimates */ X Xgetspeed() X { X static int speedtbl[] = {0, 50, 75, 110, 134, 150, 200, 300, 600, X 1200, 1800, 2400, 4800, 9600, 19200, 0}; X struct termio ttystemp; X X if (ioctl(0,TCGETA,&ttystemp) < 0) /* get tty structure */ X error("Can't get TTY parameters", FALSE); X if ((ttystemp.c_cflag & 017) >= 0 && (ttystemp.c_cflag & 017) <= 14) X { X ttyspeed = speedtbl[ttystemp.c_cflag & 017]; X logitarg ("Line speed = %d bits per second\n", ttyspeed); X } X else X { X ttyspeed = 1200; X logit ("Can't determine line speed; assuming 1200 bps\n"); X } X } !Funky!Stuff! exit -- Please send comp.sources.unix-related mail to rsalz@uunet.uu.net.