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Text File | 1984-03-02 | 30.5 KB | 1,025 lines |
- #
-
- /*
- * UMODEM -- Implements the "CP/M User's Group XMODEM" protocol and
- * the TERM II File Transfer Protocol (FTP) Number 1 for
- * packetized file up/downloading.
- *
- * Note: UNIX System-Dependent values are indicated by the string [SD]
- * in a comment field one the same line as the values.
- *
- * -- Lauren Weinstein, 6/81
- * -- (Version 2.0) Modified for JHU/UNIX by Richard Conn, 8/1/81
- * -- Version 2.1 Mods by Richard Conn, 8/2/81
- * . File Size Included on Send Option
- * -- Version 2.2 Mods by Richard Conn, 8/2/81
- * . Log File Generation and Option Incorporated
- * -- Version 2.3 Mods by Richard Conn, 8/3/81
- * . TERM II FTP 1 Supported
- * . Error Log Reports Enhanced
- * . CAN Function Added to FTP 3
- * . 'd' Option Added to Delete umodem.log File before starting
- * -- Version 2.4 Mods by Richard Conn, 8/4/81
- * . 16K-extent sector number check error corrected
- * . Count of number of received sectors added
- * -- Version 2.5 Mods by Richard Conn, 8/5/81
- * . ARPA Net Flag added
- * . ARPA Net parameter ('a') added to command line
- * . ARPA Net BIS, BIE, BOS, BOE added
- * . ARPA Net FFH escape added
- * -- Version 2.6 Mods by Bennett Marks, 8/21/81 (Bucky @ CCA-UNIX)
- * . mods for UNIX V7 (Note: for JHU compilation define
- * the variable JHU during 'cc'
- * . added 'mungmode' flag to protect from inadvertant
- * overwrite on file receive
- * . changed timeout handling prior to issuing checksum
- * -- Version 2.7 Mods by Richard Conn, 8/25/81 (rconn @ BRL)
- * . correct minor "ifndef" error in which ifndef had no arg
- * . restructured "ifdef" references so that other versions
- * of UNIX than Version 7 and JHU can be easily incorporated;
- * previous ifdef references were for JHU/not JHU;
- * to compile under Version 7 or JHU UNIX, the following
- * command lines are recommended:
- * "cc -7 umodem.c -o umodem -DVER7" for Version 7
- * "cc -7 umodem.c -o umodem -DJHU" for JHU
- * . added 'y' file status display option; this option gives
- * the user an estimate of the size of the target file to
- * send from the UNIX system in terms of CP/M records (128
- * bytes) and Kbytes (1024 byte units)
- * . added '7' option which modifies the transmission protocols
- * for 7 significant bits rather than 8; modifies both FTP 1
- * and FTP 3
- *
- */
-
- #include <stdio.h>
- #include <sys/types.h>
- #include <sys/stat.h>
-
- /* JHU UNIX tty parameter file */
- #ifdef JHU
- #include <stty.h>
- #endif
-
- /* Version 7 UNIX tty parameter file */
- #ifdef VER7
- #include <sgtty.h>
- #endif
-
- #include <signal.h>
-
- #define VERSION 27 /* Version Number */
- #define TRUE 1
- #define FALSE 0
- #define SOH 001
- #define STX 002
- #define ETX 003
- #define EOT 004
- #define ENQ 005
- #define ACK 006
- #define LF 012 /* Unix LF/NL */
- #define CR 015
- #define NAK 025
- #define SYN 026
- #define CAN 030
- #define ESC 033
- #define CTRLZ 032 /* CP/M EOF for text (usually!) */
- #define TIMEOUT -1
- #define ERRORMAX 10 /* maximum errors tolerated */
- #define RETRYMAX 10 /* maximum retries to be made */
- #define BBUFSIZ 128 /* buffer size -- do not change! */
- #define CREATMODE 0644 /* mode for created files */
-
- /* ARPA Net Constants */
- #define IAC 0377
- #define DO 0375
- #define DONT 0376
- #define WILL 0373
- #define WONT 0374
- #define TRBIN 0
-
- /* JHU UNIX structures */
- #ifdef JHU
- struct sttybuf ttys, ttysnew, ttystemp; /* for stty terminal mode calls */
- #endif
-
- /* Version 7 UNIX structures */
- #ifdef VER7
- struct sgttyb ttys, ttysnew, ttystemp; /* for stty terminal mode calls */
- #endif
-
- struct stat statbuf; /* for terminal message on/off control */
- FILE *LOGFP, *fopen();
- char buff[BBUFSIZ];
-
- #ifdef JHU
- int wason;
- #endif
-
- #ifdef VER7
- int pagelen;
- #endif
-
- char *tty;
- char XMITTYPE;
- int ARPA, RECVFLAG, SENDFLAG, FTP1, PMSG, DELFLAG, LOGFLAG, MUNGMODE;
- int STATDISP, BIT7, BITMASK;
- int delay;
-
- alarmfunc();
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- char *logfile;
- int index;
- char flag;
-
- logfile = "umodem.log"; /* Name of LOG File */
-
- printf("\nUMODEM Version %d.%d", VERSION/10, VERSION%10);
- printf(" -- UNIX-Based Remote File Transfer Facility\n");
-
- if (argc < 3 || *argv[1] != '-')
- { printf("\nUsage: \n\tumodem ");
- printf("-[rb!rt!sb!st][p][l][1][a][m][d][y][7]");
- printf(" filename\n");
- printf("\n");
- printf("\n\trb <-- Receive Binary");
- printf("\n\trt <-- Receive Text");
- printf("\n\tsb <-- Send Binary");
- printf("\n\tst <-- Send Text");
- printf("\n\tp <-- Turn ON Parameter Display");
- printf("\n\tl <-- (ell) Turn OFF LOG File Entries");
- printf("\n\t1 <-- (one) Employ TERM II FTP 1");
- printf("\n\ta <-- Turn ON ARPA Net Flag");
- printf("\n\tm <-- Allow file overwiting on receive");
- printf("\n\td <-- Delete umodem.log File before starting");
- printf("\n\ty <-- Display file status (size) information only");
- printf("\n\t7 <-- Enable 7-bit transfer mask");
- printf("\n");
- exit(-1);
- }
-
- index = 1; /* set index for loop */
- delay = 3; /* assume FTP 3 delay */
- PMSG = FALSE; /* turn off flags */
- FTP1 = FALSE; /* assume FTP 3 (CP/M UG XMODEM2) */
- RECVFLAG = FALSE; /* not receive */
- SENDFLAG = FALSE; /* not send either */
- XMITTYPE = 't'; /* assume text */
- DELFLAG = FALSE; /* do NOT delete log file before starting */
- LOGFLAG = TRUE; /* assume log messages */
- ARPA = FALSE; /* assume not on ARPA Net */
- MUNGMODE = FALSE; /* protect files from overwriting */
- STATDISP = FALSE; /* assume not a status display */
- BIT7 = FALSE; /* assume 8-bit communication */
- while ((flag = argv[1][index++]) != '\0')
- switch (flag) {
- case 'a' : ARPA = TRUE; /* set ARPA Net */
- break;
- case 'p' : PMSG = TRUE; /* print all messages */
- break;
- case '1' : FTP1 = TRUE; /* select FTP 1 */
- delay = 5; /* FTP 1 delay constant */
- printf("\nUMODEM: TERM II FTP 1 Selected\n");
- break;
- case 'd' : DELFLAG = TRUE; /* delete log file first */
- break;
- case 'l' : LOGFLAG = FALSE; /* turn off log report */
- break;
- case 'r' : RECVFLAG = TRUE; /* receive file */
- XMITTYPE = gettype(argv[1][index++]); /* get t/b */
- break;
- case 's' : SENDFLAG = TRUE; /* send file */
- XMITTYPE = gettype(argv[1][index++]);
- break;
- case 'm' : MUNGMODE = TRUE; /* allow overwriting of files */
- break;
- case 'y' : STATDISP = TRUE; /* display file status */
- break;
- case '7' : BIT7 = TRUE; /* transfer only 7 bits */
- break;
- default : error("Invalid Flag", FALSE);
- }
-
- if (BIT7 && (XMITTYPE == 'b'))
- { printf("\nUMODEM: Fatal Error -- Both 7-Bit Transfer and ");
- printf("Binary Transfer Selected");
- exit(-1); /* error exit to UNIX */
- }
-
- if (BIT7) /* set MASK value */
- BITMASK = 0177; /* 7 significant bits */
- else
- BITMASK = 0377; /* 8 significant bits */
-
- if (PMSG)
- { printf("\nSupported File Transfer Protocols:");
- printf("\n\tTERM II FTP 1");
- printf("\n\tCP/M UG XMODEM2 (TERM II FTP 3)");
- printf("\n\n");
- }
-
- if (LOGFLAG)
- { if (!DELFLAG)
- LOGFP = fopen(logfile, "a"); /* append to LOG file */
- else
- LOGFP = fopen(logfile, "w"); /* new LOG file */
- fprintf(LOGFP,"\n\n++++++++\n");
- fprintf(LOGFP,"\nUMODEM Version %d.%d\n", VERSION/10, VERSION%10);
- printf("\nUMODEM: LOG File '%s' is Open\n", logfile);
- }
-
- if (STATDISP) yfile(argv[2]); /* status of a file */
-
- if (RECVFLAG && SENDFLAG)
- error("Both Send and Receive Functions Specified", FALSE);
- if (!RECVFLAG && !SENDFLAG)
- error("Neither Send nor Receive Functions Specified", FALSE);
-
- if (RECVFLAG)
- { if(open(argv[2], 0) != -1) /* possible abort if file exists */
- { printf("\nUMODEM: Warning -- Target File Exists\n");
- if( MUNGMODE == FALSE )
- error("Fatal - Can't overwrite file\n",FALSE);
- printf("UMODEM: Overwriting Target File\n");
- }
- rfile(argv[2]); /* receive file */
- }
- else
- sfile(argv[2]); /* send file */
-
- }
-
- gettype(ichar)
- char ichar;
- {
- if (ichar == 't') return(ichar);
- if (ichar == 'b') return(ichar);
- error("Invalid Send/Receive Parameter - not t or b", FALSE);
- return;
- }
-
- /* set tty modes for UMODEM transfers */
- setmodes()
- {
-
- /* Device characteristics for JHU UNIX */
- #ifdef JHU
- if (gtty(0, &ttys) < 0) /* get current tty params */
- error("Can't get TTY Parameters", TRUE);
-
- tty = ttyname(0); /* identify current tty */
-
- /* duplicate current modes in ttysnew structure */
- ttysnew.ispeed = ttys.ispeed; /* copy input speed */
- ttysnew.ospeed = ttys.ospeed; /* copy output speed */
- ttysnew.xflags = ttys.xflags; /* copy JHU/UNIX extended flags */
- ttysnew.mode = ttys.mode; /* copy standard terminal flags */
-
- ttysnew.mode |= RAW; /* set for RAW Mode */
- /* This ORs in the RAW mode value, thereby
- setting RAW mode and leaving the other
- mode settings unchanged */
- ttysnew.mode &= ~ECHO; /* set for no echoing */
- /* This ANDs in the complement of the ECHO
- setting (for NO echo), thereby leaving all
- current parameters unchanged and turning
- OFF ECHO only */
- ttysnew.mode &= ~XTABS; /* set for no tab expansion */
- ttysnew.mode &= ~LCASE; /* set for no upper-to-lower case xlate */
- ttysnew.mode |= ANYP; /* set for ANY Parity */
- ttysnew.mode &= ~NL3; /* turn off ALL delays - new line */
- ttysnew.mode &= ~TAB3; /* turn off tab delays */
- ttysnew.mode &= ~CR3; /* turn off CR delays */
- ttysnew.mode &= ~FF1; /* turn off FF delays */
- ttysnew.mode &= ~BS1; /* turn off BS delays */
- /* the following are JHU/UNIX xflags settings; they are [SD] */
- ttysnew.xflags &= ~PAGE; /* turn off paging */
- ttysnew.xflags &= ~STALL; /* turn off ^S/^Q recognition */
- ttysnew.xflags &= ~TAPE; /* turn off ^S/^Q input control */
- ttysnew.xflags &= ~FOLD; /* turn off CR/LF folding at col 72 */
- ttysnew.xflags |= NB8; /* turn on 8-bit input/output */
-
- if (stty(0, &ttysnew) < 0) /* set new params */
- error("Can't set new TTY Parameters", TRUE);
-
- if (stat(tty, &statbuf) < 0) /* get tty status */
- error("Can't get your TTY Status", TRUE);
-
- if (statbuf.st_mode&011) /* messages are on [SD] */
- { wason = TRUE;
- if (chmod(tty, 020600) < 0) /* turn off tty messages [SD] */
- error("Can't change TTY Mode", TRUE);
- }
- else
- wason = FALSE; /* messages are already off */
- #endif
-
- /* Device characteristics for Version 7 UNIX */
- #ifdef VER7
- if (ioctl(0,TIOCGETP,&ttys)<0) /* get tty params [V7] */
- error("Can't get TTY Parameters", TRUE);
- tty = ttyname(0); /* identify current tty */
-
- /* transfer current modes to new structure */
- ttysnew.sg_ispeed = ttys.sg_ispeed; /* copy input speed */
- ttysnew.sg_ospeed = ttys.sg_ospeed; /* copy output speed */
- ttysnew.sg_erase = ttys.sg_erase; /* copy erase flags */
- ttysnew.sg_flags = ttys.sg_flags; /* copy flags */
- ttysnew.sg_kill = ttys.sg_kill; /* copy std terminal flags */
-
-
- ttysnew.sg_flags |= RAW; /* set for RAW Mode */
- /* This ORs in the RAW mode value, thereby
- setting RAW mode and leaving the other
- mode settings unchanged */
- ttysnew.sg_flags &= ~ECHO; /* set for no echoing */
- /* This ANDs in the complement of the ECHO
- setting (for NO echo), thereby leaving all
- current parameters unchanged and turning
- OFF ECHO only */
- ttysnew.sg_flags &= ~XTABS; /* set for no tab expansion */
- ttysnew.sg_flags &= ~LCASE; /* set for no upper-to-lower case xlate */
- ttysnew.sg_flags |= ANYP; /* set for ANY Parity */
- ttysnew.sg_flags &= ~NL3; /* turn off ALL delays - new line */
- ttysnew.sg_flags &= ~TAB2; /* turn off tab delays */
- ttysnew.sg_flags &= ~CR3; /* turn off CR delays */
- ttysnew.sg_flags &= ~FF1; /* turn off FF delays */
- ttysnew.sg_flags &= ~BS1; /* turn off BS delays */
- ttysnew.sg_flags &= ~TANDEM; /* turn off flow control */
-
- /* make sure page mode is off */
- ioctl(0,TIOCSSCR,&pagelen);
-
- /* set new paramters */
- if (ioctl(0,TIOCSETP,&ttysnew) < 0)
- error("Can't set new TTY Parameters", TRUE);
-
- if (stat(tty, &statbuf) < 0) /* get tty status */
- error("Can't get your TTY Status", TRUE);
- #endif
-
- if (PMSG)
- { printf("\nUMODEM: TTY Device Parameters Altered");
- ttyparams(); /* print tty params */
- }
-
- if (ARPA) /* set 8-bit on ARPA Net */
- setarpa();
-
- return;
- }
-
- /* set ARPA Net for 8-bit transfers */
- setarpa()
- {
- sendbyte(IAC); /* set B O S (Binary Output Start) */
- sendbyte(WILL);
- sendbyte(TRBIN);
-
- sendbyte(IAC); /* set B I S (Binary Input Start) */
- sendbyte(DO);
- sendbyte(TRBIN);
-
- sleep(3); /* wait for TIP to configure */
-
- return;
- }
-
- /* restore normal tty modes */
- restoremodes(errcall)
- int errcall;
- {
- if (ARPA) /* if ARPA Net, reconfigure */
- resetarpa();
-
- /* Device characteristic restoration for JHU UNIX */
- #ifdef JHU
- if (wason) /* if messages were on originally */
- if (chmod(tty, 020611) < 0) /* [SD] */
- error("Can't change TTY Mode", FALSE);
-
- if (stty(0, &ttys) < 0) /* restore original tty modes */
- { if (!errcall)
- error("RESET - Can't restore normal TTY Params", FALSE);
- else
- { printf("UMODEM: ");
- printf("RESET - Can't restore normal TTY Params\n");
- }
- }
- #endif
-
- /* Device characteristic restoration for Version 7 UNIX */
- #ifdef VER7
- if (ioctl(0,TIOCSETP,&ttys) < 0)
- { if (!errcall)
- error("RESET - Can't restore normal TTY Params", FALSE);
- else
- { printf("UMODEM: ");
- printf("RESET - Can't restore normal TTY Params\n");
- }
- }
- #endif
-
- if (PMSG)
- { printf("\nUMODEM: TTY Device Parameters Restored");
- ttyparams(); /* print tty params */
- }
-
- return;
- }
-
- /* reset the ARPA Net */
- resetarpa()
- {
- sendbyte(IAC); /* send B O E (Binary Output End) */
- sendbyte(WONT);
- sendbyte(TRBIN);
-
- sendbyte(IAC); /* send B I E (Binary Input End) */
- sendbyte(DONT);
- sendbyte(TRBIN);
-
- return;
- }
-
- /* print error message and exit; if mode == TRUE, restore normal tty modes */
- error(msg, mode)
- char *msg;
- int mode;
- {
- if (mode)
- restoremodes(TRUE); /* put back normal tty modes */
- printf("UMODEM: %s\n", msg);
- if (LOGFLAG)
- { fprintf(LOGFP, "UMODEM Fatal Error: %s\n", msg);
- fclose(LOGFP);
- }
- exit(-1);
- }
-
- /** print status (size) of a file **/
- yfile(name)
- char *name;
- {
- printf("UMODEM File Status Display for %s\n", name);
- if (LOGFLAG) fprintf(LOGFP,"UMODEM File Status Display for %s\n",
- name);
-
- if (open(name,0) < 0)
- { printf("File %s does not exist\n", name);
- if (LOGFLAG) fprintf(LOGFP,"File %s does not exist\n", name);
- exit(-1); /* error exit to UNIX */
- }
-
- prfilestat(name); /* print status */
- printf("\n");
- if (LOGFLAG)
- { fprintf(LOGFP,"\n");
- fclose(LOGFP);
- }
-
- exit(0); /* exit to UNIX -- no error */
- }
-
- /** receive a file **/
- rfile(name)
- char *name;
- {
- char mode;
- int fd, j, firstchar, sectnum, sectcurr, tmode;
- int sectcomp, errors, errorflag, recfin;
- register int bufctr, checksum;
- register int c;
- int errorchar, fatalerror, startstx, inchecksum, endetx, endenq;
- long recvsectcnt;
-
- mode = XMITTYPE; /* set t/b mode */
- if ((fd = creat(name, CREATMODE)) < 0)
- error("Can't create file for receive", FALSE);
- setmodes(); /* setup tty modes for xfer */
- printf("\r\nUMODEM: File Name: %s", name);
- if (LOGFLAG)
- { fprintf(LOGFP, "\n----\nUMODEM Receive Function\n");
- fprintf(LOGFP, "File Name: %s\n", name);
- if (FTP1)
- fprintf(LOGFP, "TERM II File Transfer Protocol 1 Selected\n");
- else
- fprintf(LOGFP,
- "TERM II File Transfer Protocol 3 (CP/M UG) Selected\n");
- if (BIT7)
- fprintf(LOGFP, "7-Bit Transmission Enabled\n");
- else
- fprintf(LOGFP, "8-Bit Transmission Enabled\n");
- }
- printf("\r\nUMODEM: ");
- if (BIT7)
- printf("7-Bit");
- else
- printf("8-Bit");
- printf(" Transmission Enabled");
- printf("\r\nUMODEM: Ready to RECEIVE File\r\n");
-
- recfin = FALSE;
- sectnum = errors = 0;
- fatalerror = FALSE; /* NO fatal errors */
- recvsectcnt = 0; /* number of received sectors */
-
- if (mode == 't')
- tmode = TRUE;
- else
- tmode = FALSE;
-
- if (FTP1)
- {
- while (readbyte(4) != SYN);
- sendbyte(ACK); /* FTP 1 Sync */
- }
- else sendbyte(NAK); /* FTP 3 Sync */
-
- do
- { errorflag = FALSE;
- do {
- firstchar = readbyte(6);
- } while ((firstchar != SOH) && (firstchar != EOT) && (firstchar
- != TIMEOUT));
- if (firstchar == TIMEOUT)
- { if (LOGFLAG)
- fprintf(LOGFP, "Timeout on Sector %d\n", sectnum);
- errorflag = TRUE;
- }
-
- if (firstchar == SOH)
- { if (FTP1) readbyte(5); /* discard leading zero */
- sectcurr = readbyte(delay);
- sectcomp = readbyte(delay);
- if (FTP1) startstx = readbyte(delay); /* get leading STX */
- if ((sectcurr + sectcomp) == BITMASK)
- { if (sectcurr == (sectnum+1)&BITMASK)
- { checksum = 0;
- for (j = bufctr = 0; j < BBUFSIZ; j++)
- { buff[bufctr] = c = readbyte(delay);
- checksum = (checksum+c)&BITMASK;
- if (!tmode) /* binary mode */
- { bufctr++;
- continue;
- }
- if (c == CR)
- continue; /* skip CR's */
- if (c == CTRLZ) /* skip CP/M EOF char */
- { recfin = TRUE; /* flag EOF */
- continue;
- }
- if (!recfin)
- bufctr++;
- }
- if (FTP1) endetx = readbyte(delay); /* get ending ETX */
- inchecksum = readbyte(delay); /* get checksum */
- if (FTP1) endenq = readbyte(delay); /* get ENQ */
- if (checksum == inchecksum) /* good checksum */
- { errors = 0;
- recvsectcnt++;
- sectnum = sectcurr; /* update sector counter */
- if (write(fd, buff, bufctr) < 0)
- error("File Write Error", TRUE);
- else
- { if (FTP1) sendbyte(ESC); /* FTP 1 requires <ESC> */
- sendbyte(ACK);
- }
- }
- else
- { if (LOGFLAG)
- fprintf(LOGFP, "Checksum Error on Sector %d\n",
- sectnum);
- errorflag = TRUE;
- }
- }
- else
- { if (sectcurr == sectnum)
- { while(readbyte(3) != TIMEOUT);
- if (FTP1) sendbyte(ESC); /* FTP 1 requires <ESC> */
- sendbyte(ACK);
- }
- else
- { if (LOGFLAG)
- { fprintf(LOGFP, "Phase Error - Received Sector is ");
- fprintf(LOGFP, "%d while Expected Sector is %d\n",
- sectcurr, (sectnum+1)&BITMASK);
- }
- errorflag = TRUE;
- fatalerror = TRUE;
- if (FTP1) sendbyte(ESC); /* FTP 1 requires <ESC> */
- sendbyte(CAN);
- }
- }
- }
- else
- { if (LOGFLAG)
- fprintf(LOGFP, "Header Sector Number Error on Sector %d\n",
- sectnum);
- errorflag = TRUE;
- }
- }
- if (FTP1 && !errorflag)
- { if (startstx != STX)
- { errorflag = TRUE; /* FTP 1 STX missing */
- errorchar = STX;
- }
- if (endetx != ETX)
- { errorflag = TRUE; /* FTP 1 ETX missing */
- errorchar = ETX;
- }
- if (endenq != ENQ)
- { errorflag = TRUE; /* FTP 1 ENQ missing */
- errorchar = ENQ;
- }
- if (errorflag && LOGFLAG)
- { fprintf(LOGFP, "Invalid Packet-Control Character: ");
- switch (errorchar) {
- case STX : fprintf(LOGFP, "STX"); break;
- case ETX : fprintf(LOGFP, "ETX"); break;
- case ENQ : fprintf(LOGFP, "ENQ"); break;
- default : fprintf(LOGFP, "Error"); break;
- }
- fprintf(LOGFP, "\n");
- }
- }
- if (errorflag == TRUE)
- { errors++;
- while (readbyte(3) != TIMEOUT);
- sendbyte(NAK);
- }
- }
- while ((firstchar != EOT) && (errors != ERRORMAX) && !fatalerror);
- if ((firstchar == EOT) && (errors < ERRORMAX))
- { if (!FTP1) sendbyte(ACK);
- close(fd);
- restoremodes(FALSE); /* restore normal tty modes */
- if (FTP1)
- while (readbyte(3) != TIMEOUT); /* flush EOT's */
- sleep(3); /* give other side time to return to terminal mode */
- if (LOGFLAG)
- { fprintf(LOGFP, "\nReceive Complete\n");
- fprintf(LOGFP,"Number of Received CP/M Records is %ld\n", recvsectcnt);
- fclose(LOGFP);
- }
- printf("\n");
- exit(0);
- }
- else
- { if (LOGFLAG && FTP1 && fatalerror) fprintf(LOGFP,
- "Synchronization Error");
- error("TIMEOUT -- Too Many Errors", TRUE);
- }
- }
-
- /** send a file **/
- sfile(name)
- char *name;
- {
- char mode;
- int fd, charval, attempts;
- int nlflag, sendfin, tmode;
- register int bufctr, checksum, sectnum;
- char c;
- int sendresp; /* response char to sent block */
-
- mode = XMITTYPE; /* set t/b mode */
- if ((fd = open(name, 0)) < 0)
- { if (LOGFLAG) fprintf(LOGFP, "Can't Open File\n");
- error("Can't open file for send", FALSE);
- }
- setmodes(); /* setup tty modes for xfer */
- printf("\r\nUMODEM: File Name: %s", name);
- if (LOGFLAG)
- { fprintf(LOGFP, "\n----\nUMODEM Send Function\n");
- fprintf(LOGFP, "File Name: %s\n", name);
- }
- prfilestat(name); /* print file size statistics */
- if (LOGFLAG)
- { if (FTP1)
- fprintf(LOGFP, "TERM II File Transfer Protocol 1 Selected\n");
- else
- fprintf(LOGFP,
- "TERM II File Transfer Protocol 3 (CP/M UG) Selected\n");
- if (BIT7)
- fprintf(LOGFP, "7-Bit Transmission Enabled\n");
- else
- fprintf(LOGFP, "8-Bit Transmission Enabled\n");
- }
- printf("\r\nUMODEM: ");
- if (BIT7)
- printf("7-Bit");
- else
- printf("8-Bit");
- printf(" Transmission Enabled");
- printf("\r\nUMODEM: Ready to SEND File\r\n");
-
- if (mode == 't')
- tmode = TRUE;
- else
- tmode = FALSE;
-
- sendfin = nlflag = FALSE;
- attempts = 0;
-
- if (FTP1)
- { sendbyte(SYN); /* FTP 1 Synchronize with Receiver */
- while (readbyte(5) != ACK)
- { if(++attempts > RETRYMAX*6) error("Remote System Not Responding",
- TRUE);
- sendbyte(SYN);
- }
- }
- else
- { while (readbyte(30) != NAK) /* FTP 3 Synchronize with Receiver */
- if (++attempts > RETRYMAX) error("Remote System Not Responding",
- TRUE);
- }
-
- sectnum = 1; /* first sector number */
- attempts = 0;
-
- do
- { for (bufctr=0; bufctr < BBUFSIZ;)
- { if (nlflag)
- { buff[bufctr++] = LF; /* leftover newline */
- nlflag = FALSE;
- }
- if ((charval = read(fd, &c, 1)) < 0)
- error("File Read Error", TRUE);
- if (charval == 0) /* EOF for read */
- { sendfin = TRUE; /* this is the last sector */
- if (tmode)
- buff[bufctr++] = CTRLZ; /* Control-Z for CP/M EOF */
- else
- bufctr++;
- continue;
- }
- if (tmode && c == LF) /* text mode & Unix newline? */
- { if (c == LF) /* Unix newline? */
- { buff[bufctr++] = CR; /* insert carriage return */
- if (bufctr < BBUFSIZ)
- buff[bufctr++] = LF; /* insert Unix newline */
- else
- nlflag = TRUE; /* insert newline on next sector */
- }
- continue;
- }
- buff[bufctr++] = c; /* copy the char without change */
- }
- attempts = 0;
- do
- { sendbyte(SOH); /* send start of packet header */
- if (FTP1) sendbyte(0); /* FTP 1 Type 0 Packet */
- sendbyte(sectnum); /* send current sector number */
- sendbyte(-sectnum-1); /* and its complement */
- if (FTP1) sendbyte(STX); /* send STX */
- checksum = 0; /* init checksum */
- for (bufctr=0; bufctr < BBUFSIZ; bufctr++)
- { sendbyte(buff[bufctr]); /* send the byte */
- if (ARPA && (buff[bufctr]==0xff)) /* ARPA Net FFH esc */
- sendbyte(buff[bufctr]); /* send 2 FFH's for one */
- checksum = (checksum+buff[bufctr])&BITMASK;
- }
- /* while (readbyte(3) != TIMEOUT); flush chars from line */
- if (FTP1) sendbyte(ETX); /* send ETX */
- sendbyte(checksum); /* send the checksum */
- if (FTP1) sendbyte(ENQ); /* send ENQ */
- attempts++;
- if (FTP1)
- { sendresp = NAK; /* prepare for NAK */
- if (readbyte(10) == ESC) sendresp = readbyte(10);
- }
- else
- sendresp = readbyte(10); /* get response */
- if ((sendresp != ACK) && LOGFLAG)
- { fprintf(LOGFP, "Non-ACK Received on Sector %d\n",
- sectnum);
- if (sendresp == TIMEOUT)
- fprintf(LOGFP, "This Non-ACK was a TIMEOUT\n");
- }
- } while((sendresp != ACK) && (attempts != RETRYMAX));
- sectnum++; /* increment to next sector number */
- } while (!sendfin && (attempts != RETRYMAX));
-
- if (attempts == RETRYMAX)
- error("Remote System Not Responding", TRUE);
-
- attempts = 0;
- if (FTP1)
- while (attempts++ < 10) sendbyte(EOT);
- else
- { sendbyte(EOT); /* send 1st EOT */
- while ((readbyte(15) != ACK) && (attempts++ < RETRYMAX))
- sendbyte(EOT);
- if (attempts >= RETRYMAX)
- error("Remote System Not Responding on Completion", TRUE);
- }
-
- close(fd);
- restoremodes(FALSE);
- sleep(5); /* give other side time to return to terminal mode */
- if (LOGFLAG)
- { fprintf(LOGFP, "\nSend Complete\n");
- fclose(LOGFP);
- }
- printf("\n");
- exit(0);
-
- }
-
- /* print file size status information */
- prfilestat(name)
- char *name;
- {
- struct stat filestatbuf; /* file status info */
-
- stat(name, &filestatbuf); /* get file status bytes */
- printf("\r\nUMODEM: Estimated File Size %ldK, %ld Records, %ld Bytes",
- (filestatbuf.st_size/1024)+1, (filestatbuf.st_size/128)+1,
- filestatbuf.st_size);
- if (LOGFLAG)
- fprintf(LOGFP,"Estimated File Size %ldK, %ld Records, %ld Bytes\n",
- (filestatbuf.st_size/1024)+1, (filestatbuf.st_size/128)+1,
- filestatbuf.st_size);
- return;
- }
-
- /* get a byte from data stream -- timeout if "seconds" elapses */
- readbyte(seconds)
- unsigned seconds;
- {
- int c;
-
- signal(SIGALRM,alarmfunc); /* catch alarms */
- alarm(seconds); /* set the alarm clock */
- if (read(0, &c, 1) < 0) /* get a char; error means we timed out */
- {
- return(TIMEOUT);
- }
- alarm(0); /* turn off the alarm */
- return(c&BITMASK); /* return the char */
- }
-
- /* send a byte to data stream */
- sendbyte(data)
- char data;
- {
- char dataout;
- dataout = data&BITMASK; /* mask for 7 or 8 bits */
- write(1, &dataout, 1); /* write the byte */
- return;
- }
-
- /* function for alarm clock timeouts */
- alarmfunc()
- {
- return; /* this is basically a dummy function to force error */
- /* status return on the "read" call in "readbyte" */
- }
-
- /* print data on TTY setting */
- ttyparams()
- {
-
- /* Obtain TTY parameters for JHU UNIX */
- #ifdef JHU
- gtty(0, &ttystemp); /* get current tty params */
- #endif
-
- /* Obtain TTY parameters for Version 7 UNIX */
- #ifdef VER7
- ioctl(0,TIOCGETP,&ttystemp);
- #endif
-
- tty = ttyname(0); /* get name of tty */
- stat(tty, &statbuf); /* get more tty params */
-
- printf("\r\n\nTTY Device Parameter Display");
- printf("\r\n\tTTY Device Name is %s\r\n\n", tty);
- printf("\tAny Parity Allowed "); pryn(ANYP);
- printf("\tEven Parity Allowed"); pryn(EVENP);
- printf("\tOdd Parity Allowed "); pryn(ODDP);
- printf("\tEcho Enabled "); pryn(ECHO);
- printf("\tLower Case Map "); pryn(LCASE);
- printf("\tTabs Expanded "); pryn(XTABS);
- printf("\tCR Mode Enabled "); pryn(CRMOD);
- printf("\tRAW Mode Enabled "); pryn(RAW);
-
- /* Print extended terminal characteristics for JHU UNIX */
- #ifdef JHU
- printf("\tBinary Mode Enabled"); pryn1(NB8);
- printf("\tCR/LF in Col 72 "); pryn1(FOLD);
- printf("\tRecognize ^S/^Q "); pryn1(STALL);
- printf("\tSend ^S/^Q "); pryn1(TAPE);
- printf("\tTerminal can BS "); pryn1(SCOPE);
- printf("\r\n"); /* New line to separate topics */
- printf("\tTerminal Paging is "); pryn1(PAGE);
- if (ttystemp.xflags&PAGE)
- printf("\t Lines/Page is %d\r\n", ttystemp.xflags&PAGE);
- printf("\r\n"); /* New line to separate topics */
- printf("\tTTY Input Rate : ");
- prbaud(ttystemp.ispeed); /* print baud rate */
- printf("\tTTY Output Rate : ");
- prbaud(ttystemp.ospeed); /* print output baud rate */
- printf("\r\n"); /* New line to separate topics */
- printf("\tMessages Enabled ");
- if (statbuf.st_mode&011)
- printf(": Yes\r\n");
- else
- printf(": No\r\n");
- #endif
-
- /* Print extended characteristics for Version 7 UNIX */
- #ifdef VER7
- printf("\tTTY Input Rate : ");
- prbaud(ttystemp.sg_ispeed);
- printf("\tTTY Output Rate : ");
- prbaud(ttystemp.sg_ospeed); /* print output baud rate */
- #endif
-
- }
-
- pryn(iflag)
- int iflag;
- {
-
- /* JHU UNIX flag test */
- #ifdef JHU
- if (ttystemp.mode&iflag)
- #endif
-
- /* Version 7 UNIX flag test */
- #ifdef VER7
- if (ttystemp.sg_flags&iflag)
- #endif
-
- printf(": Yes\r\n");
- else
- printf(": No\r\n");
- }
-
- /* Extended flag test for JHU UNIX only */
- #ifdef JHU
- pryn1(iflag)
- int iflag;
- {
- if (ttystemp.xflags&iflag)
- printf(": Yes\r\n");
- else
- printf(": No\r\n");
- }
- #endif
-
- prbaud(speed)
- char speed;
- {
- switch (speed) {
-
- /* JHU UNIX speed flag cases */
- #ifdef JHU
- case B0050 : printf("50"); break;
- case B0075 : printf("75"); break;
- case B0110 : printf("110"); break;
- case B0134 : printf("134.5"); break;
- case B0150 : printf("150"); break;
- case B0200 : printf("200"); break;
- case B0300 : printf("300"); break;
- case B0600 : printf("600"); break;
- case B1200 : printf("1200"); break;
- case B1800 : printf("1800"); break;
- case B2400 : printf("2400"); break;
- case B4800 : printf("4800"); break;
- case B9600 : printf("9600"); break;
- case EXT_A : printf("External A"); break;
- case EXT_B : printf("External B"); break;
- #endif
-
- /* Version 7 UNIX speed flag cases */
- #ifdef VER7
- case B50 : printf("50"); break;
- case B75 : printf("75"); break;
- case B110 : printf("110"); break;
- case B134 : printf("134.5"); break;
- case B150 : printf("150"); break;
- case B200 : printf("200"); break;
- case B300 : printf("300"); break;
- case B600 : printf("600"); break;
- case B1200 : printf("1200"); break;
- case B1800 : printf("1800"); break;
- case B2400 : printf("2400"); break;
- case B4800 : printf("4800"); break;
- case B9600 : printf("9600"); break;
- case EXTA : printf("External A"); break;
- case EXTB : printf("External B"); break;
- #endif
-
- default : printf("Error"); break;
- }
- printf(" Baud\r\n");
- }