rsalz@bbn.com (Rich Salz) (03/04/88)
Submitted-by: Steve Grandi <grandi@noao.arizona.edu> Posting-number: Volume 13, Issue 94 Archive-name: xmodem3.4/part02 : 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/* 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/* 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, recvsectcnt, checksum, bufctr) X Xint bufsize, /* number of chars to be read */ Xseconds, /* timeout period for each read */ Xtmode, /* transmission mode: TRUE if text, FALSE if binary */ 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 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 if (c == CTRLZ) /* CP/M EOF char */ X { X recfin = TRUE; X continue; X } X if (!recfin) /* dont 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/* 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 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, recvsectcnt, checksum, bufctr) X Xint bufsize, /* number of chars to be read */ Xseconds, /* timeout period for each read */ Xtmode, /* transmission mode: TRUE if text, FALSE if binary */ 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 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 if (c == CTRLZ) /* CP/M EOF char */ X { X recfin = TRUE; X continue; X } X if (!recfin) /* dont 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 [V7] */ 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! echo x - send.c sed -e 's/^X//' > send.c << '!Funky!Stuff!' X/** send a file **/ X X/* X * Operation of this routine depends on on MDM7BAT and YMDMBAT flags. X * X * If "name" is NULL; close out the BATCH send. X */ X X#include "xmodem.h" X Xsfile(name) Xchar *name; X { X X char *sectdisp(); X time_t time(); X char *strcpy(); X char *unix_cpm(); X X extern unsigned short crctab[1<<B]; /* CRC-16 constant values, see getput.c */ X X register int bufctr, /* array index for data buffer */ X sectnum; /* packet number for packet header */ X X register unsigned short checksum; /* checksum/crc */ X X char blockbuf[BBUFSIZ+6]; /* holds packet as it is constructed */ X X struct stat filestatbuf; /* file status info */ X X int fd, /* file descriptor for file being transmitted */ X attempts, /* number of attempts made to transmit a packet */ X nlflag, /* flag that we have to send a LF in next packet */ X sendfin, /* flag that we are sending the last packet */ X closeout, /* flag that we are closing out batch send */ X startup, /* flag that we are starting batch send */ X tmode, /* TRUE for text mode; FALSE for binary mode */ X bbufcnt, /* array index for packet */ X firstchar, /* first character in protocol transaction */ X bufsize, /* packet size (128 or 1024) */ X sendresp, /* response char to sent block received from remote*/ X extrachar; /* count of extra LF characters added */ X long sentsect; /* count of 128 byte sectors actually sent */ X long expsect; /* count of 128 byte sectors expected to be sent */ X time_t start; /* starting time of transfer */ X char c; X X nbchr = 0; /* clear buffered read char count */ X X CRCMODE = FALSE; /* Receiver determines use of crc or checksum */ X X closeout = FALSE; startup = TRUE; /* indicate state of batch transfer */ X X /* Check on NULL file name */ X if (strcmp(name,"") == 0) X { X if (BATCH) X closeout = TRUE; X else X { X sendbyte(CAN); sendbyte(CAN); sendbyte(CAN); X error("NULL file name in send", TRUE); X } X } X X if (!closeout) /* Are we closing down batch? */ X { /* no; let's send a file */ X if ((fd = open(name, 0)) < 0) X { X sendbyte(CAN); sendbyte(CAN); sendbyte(CAN); X error("Can't open file for send", TRUE); X } X X stat(name, &filestatbuf); /* get file status bytes */ X expsect = (filestatbuf.st_size/128) + 1; X X if (LOGFLAG) X { X fprintf(LOGFP, "----\nXMODEM Send Function\n"); X fprintf(LOGFP, "File Name: %s\n", name); X fprintf(LOGFP,"Estimated File Size %ldK, %ld Records, %ld Bytes\n", X (filestatbuf.st_size/1024)+1, expsect, filestatbuf.st_size); X projtime(expsect, LOGFP); X } X } X else X { X logit("----\nXMODEM Send Function\n"); X logit("Closing down Batch Transmission\n"); X } X X X tmode = (XMITTYPE == 't') ? TRUE : FALSE; /* set text mode */ X X bufsize = LONGPACK ? 1024 : 128; /* set sector size */ X if (LONGPACK && !closeout) X logit("1K packet mode chosen\n"); X X sendfin = nlflag = FALSE; X attempts = 0; X X /* wait for and read startup character */ Xrestart: X do X { X while (((firstchar=readbyte(1)) != NAK) && (firstchar != CRCCHR) && (firstchar != CAN)) X if (++attempts > NAKMAX) X { X if (MDM7BAT && startup) X { X sendbyte(ACK); sendbyte(EOT); X } X error("Remote System Not Responding", TRUE); X } X X if ((firstchar & 0x7f) == CAN) X if (readbyte(3) == CAN) X error("Send cancelled at user's request",TRUE); X X if (firstchar == CRCCHR) X { X CRCMODE = TRUE; X if (!closeout) X logit("CRC mode requested\n"); X if (readbyte(1) == KCHR) X { X LONGPACK = TRUE; X logit("Receiver invoked 1K packet mode\n"); X } X } X } X while (firstchar != NAK && firstchar != CRCCHR); X X if (MDM7BAT && closeout) /* close out MODEM7 batch */ X { X sendbyte(ACK); sendbyte (EOT); X readbyte(2); /* flush junk */ X return; X } X X if (MDM7BAT && startup) /* send MODEM7 file name */ X { X if (send_name(unix_cpm(name)) == -1) X { X attempts = 0; X goto restart; X } X startup = FALSE; X attempts = 0; X goto restart; X } X X sectnum = 1; X X if (YMDMBAT) /* Fudge for YMODEM transfer (to send name packet) */ X { X sectnum = 0; X bufsize = 128; X } X X attempts = sentsect = extrachar = 0; X start = time((time_t *) 0); X X do /* outer packet building/sending loop; loop till whole file is sent */ X { X X if (closeout && YMDMBAT && sectnum == 1) /* close out YMODEM */ X return; X X if (YMDMBAT && sectnum == 1) /* get set to send YMODEM data packets */ X { X bufsize = LONGPACK ? 1024 : 128; X do X { X while (((firstchar=readbyte(3)) != CRCCHR) && (firstchar != CAN)) X if (++attempts > STERRORMAX) X error("YMODEM protocol botch, C expected", TRUE); X if ((firstchar&0x7f) == CAN) X if (readbyte(3) == CAN) X error("Send cancelled at User's request", TRUE); X } X while (firstchar != CRCCHR); X attempts = 0; X } X X if (extrachar >= 128) /* update expected sector count */ X { X extrachar = 0; X expsect++; X } X X if ((bufsize == 1024) && (attempts > KSWMAX)) X { X logit("Reducing packet size to 128 due to excessive errors\n"); X bufsize = 128; X } X X if ((bufsize == 1024) && ((expsect - sentsect) < 8)) X { X logit("Reducing packet size to 128 for tail end of file\n"); X bufsize = 128; X } X X if (sectnum > 0) /* data packet */ X { X for (bufctr=0; bufctr < bufsize;) X { X if (nlflag) X { X buff[bufctr++] = LF; /* leftover newline */ X nlflag = FALSE; X } X if (getbyte(fd, &c) == EOF) X { X sendfin = TRUE; /* this is the last sector */ X if (!bufctr) /* if EOF on sector boundary */ X break; /* avoid sending extra sector */ X buff[bufctr++] = CTRLZ; /* pad with Ctrl-Z for CP/M EOF (even do for binary files) */ X continue; X } X X if (tmode && c == LF) /* text mode & Unix newline? */ X { X extrachar++; X buff[bufctr++] = CR; /* insert carriage return */ X if (bufctr < bufsize) X buff[bufctr++] = LF; /* insert LF */ X else X nlflag = TRUE; /* insert on next sector */ X } X else X buff[bufctr++] = c; /* copy the char without change */ X } X X if (!bufctr) /* if EOF on sector boundary */ X break; /* avoid sending empty sector */ X } X X else /* YMODEM filename packet */ X { X for (bufctr=0; bufctr<bufsize; bufctr++) /* zero packet */ X buff[bufctr]=0; X if (!closeout) X { X cpmify(name); X strcpy((char *)buff, name); X if (!tmode) /* put in file length etc. only if binary transfer */ X { X register char *p; X p = (char *)buff + strlen(name) + 1; X sprintf(p, "%lu %lo %o", filestatbuf.st_size, X filestatbuf.st_mtime, filestatbuf.st_mode); X logitarg("YMODEM header information: %s\n", p); X } X buff[bufsize-2] = (expsect & 0xff); /* put in KMD kludge information */ X buff[bufsize-1] = ((expsect >> 8) & 0xff); X } X } X X bbufcnt = 0; /* start building block to be sent */ X blockbuf[bbufcnt++] = (bufsize == 1024) ? STX : SOH; /* start of packet char */ X blockbuf[bbufcnt++] = sectnum; /* current sector # */ X blockbuf[bbufcnt++] = ~sectnum; /* and its complement */ X X checksum = 0; /* initialize checksum */ X for (bufctr=0; bufctr < bufsize; bufctr++) X { X blockbuf[bbufcnt++] = buff[bufctr]; X X if (CRCMODE) X checksum = (checksum<<B) ^ crctab[(checksum>>(W-B)) ^ buff[bufctr]]; X X else X checksum = ((checksum+buff[bufctr]) & 0xff); X } X X if (CRCMODE) /* put in CRC */ X { X checksum &= 0xffff; X blockbuf[bbufcnt++] = ((checksum >> 8) & 0xff); X blockbuf[bbufcnt++] = (checksum & 0xff); X } X else /* put in checksum */ X blockbuf[bbufcnt++] = checksum; X X attempts = 0; X X do /* inner packet loop */ X { X X writebuf(blockbuf, bbufcnt); /* write the block */ X X if (DEBUG) X fprintf (LOGFP, "DEBUG: %d byte Packet %02xh (%02xh) sent, checksum %02xh %02xh\n", X bbufcnt, blockbuf[1]&0xff, blockbuf[2]&0xff, blockbuf[bufsize+3]&0xff, blockbuf[bufsize+4]&0xff); X X attempts++; X sendresp = readbyte(10); /* get response from remote */ X X if (sendresp != ACK) X { X if (sendresp == TIMEOUT) X { X logitarg("Timeout on sector %s\n",sectdisp(sentsect,bufsize,1)); X } X else if (sendresp == NAK) X { X logitarg("NAK on sector %s\n",sectdisp(sentsect,bufsize,1)); X } X else X { X logitarg("Non-ACK on sector %s\n",sectdisp(sentsect,bufsize,1)); X } X } X } X while((sendresp != ACK) && (attempts < ERRORMAX)); /* close of inner loop */ X X sectnum++; /* increment to next sector number */ X sentsect += (bufsize == 128) ? 1 : 8; X } X while (!sendfin && ( attempts < ERRORMAX)); /* end of outer loop */ X X if (attempts > ERRORMAX) X { X sendbyte(CAN); sendbyte(CAN); sendbyte(CAN); sendbyte(CAN); sendbyte(CAN); X error ("Too many errors in transmission", TRUE); X } X X attempts = 0; X sendbyte(EOT); /* send 1st EOT to close down transfer */ X X while ((readbyte(15) != ACK) && (attempts++ < EOTMAX)) /* wait for ACK of EOT */ X { X if (attempts > 1) X logitarg("EOT not ACKed, try %d\n", attempts); X sendbyte(EOT); X } X X if (attempts >= RETRYMAX) X error("Remote System Not Responding on Completion", TRUE); X X close(fd); X X logit("Send Complete\n"); X prtime(sentsect, time((time_t *) 0) - start); X } !Funky!Stuff! exit -- Please send comp.sources.unix-related mail to rsalz@uunet.uu.net.