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Text File | 1988-08-16 | 43.5 KB | 1,240 lines |
- * KERMIT FOR U-MAN 1000 UNDER CP/M-68k
- * ====================================
- *
- *
- * This is a concatenation of the source files for U-MAN Kermit. Each file
- * begins with a line of the form
- *
- * **** <name> ******.....
- *
- * where <name> is the name the file should have on the U-MAN discs. End of
- * file is marked by a line
- *
- * **** END OF FILE *****.......
- *
- **** FILE UMBDOS.S *************************************************************
- .globl _bdos
-
- _bdos: move.w 4(sp),d0
- move.l 6(sp),d1
- trap #2
- rts
-
- .globl _bios
- _bios: move.w 4(sp),d0
- move.l 6(sp),d1
- move.l 10(sp),d2
- trap #3
- rts
- .end
- **** FILE UMTERM.C *************************************************************
- /* This is a very simple terminal program for the UMAN */
-
- main()
- {
- register long iobyte;
- iobyte=bios(19) & ~3; /* Get iobyte */
- while (1)
- {
- iobyte |=1;
- bios(20,iobyte); /* Set console device to keyboard */
- if (bios(2)) bios(6,(long)readcon()); /* Check for input */
- iobyte &= ~3; /* Set console device to serial */
- bios(20,iobyte);
- if (bios(2)) /* There is a character at serial */
- {
- iobyte |=1;
- bios(20,iobyte);
- bios(4,(long)(bios(7)& 0x7f));
- }
- }
- }
-
- readcon()
- {
- /* This reads the console */
- register int c;
- c=bios(3); /* Read the keyboard */
- if (c!=0x1d) return(c); /* If not CTRL ] */
- exit(0);
- }
- **** FILE UMKERM.C *************************************************************
- /*
- * K e r m i t File Transfer Utility
- *
- */
-
- #include <stdio.h>
-
- /* Symbol Definitions */
-
- #define MAXPACKSIZ 94 /* Maximum packet size */
- #define MYPACKSIZ 94 /* My packet size */
- #define SOH 1 /* Start of header */
- #define CR 13 /* ASCII Carriage Return */
- #define SP 32 /* ASCII space */
- #define DEL 127 /* Delete (rubout) */
- #define ESCCHR '^' /* Default escape character for CONNECT */
- #define DEFPAR '\0' /* Default no parity */
-
- #define MAXTRY 10 /* Times to retry a packet */
- #define MYQUOTE '#' /* Quote character I will use */
- #define MYPAD 0 /* Number of padding characters I will need */
- #define MYPCHAR 0 /* Padding character I need (0) */
- #define DEFMAXL 80 /* Default packer size */
- #define DEFTIME 5 /* Default timeout */
- #define DEFPAD 0 /* Default pad characters */
- #define DEFPADC 0 /* Default pad character */
- #define DEFEOL '\r' /* Default EOL character */
- #define DEFQUOTE '#' /* Default QUOTE character */
- #define DEFQBIN 'N' /* Default QBIN character */
-
- #define QBIN '&' /* Character for binary quoting */
-
- #define MYEOL '\n' /* End-Of-Line character I need */
-
- #define MYTIME 10 /* Seconds after which I should be timed out */
- #define MAXTIM 60 /* Maximum timeout interval */
- #define MINTIM 2 /* Minumum timeout interval */
-
- #define TRUE -1 /* Boolean constants */
- #define FALSE 0
-
-
- /* Macro Definitions */
-
- /*
- * tochar: converts a control character to a printable one by adding a space.
- *
- * unchar: undoes tochar.
- *
- * ctl: converts between control characters and printable characters by
- * toggling the control bit (ie. ^A becomes A and A becomes ^A).
- */
- #define tochar(ch) ((ch) + ' ')
- #define unchar(ch) ((ch) - ' ')
- #define ctl(ch) ((ch) ^ 64 )
-
-
- /* Global Variables */
-
- char version[]="Uman Kermit. Version 0.02\n";
-
- int size, /* Size of present data */
- spsiz, /* Maximum send packet size */
- pad, /* How much padding to send */
- timint, /* Timeout for foreign host on sends */
- n, /* Packet number */
- numtry, /* Times this packet retried */
- oldtry, /* Times previous packet retried */
- parity, /* o,e,s,m or 0 */
- debug, /* indicates level of debugging output (0=none) */
- qflag, /* -1 if doing 8 bit quoting */
- filecount; /* Number of files left to send */
-
- char state, /* Present state of the automaton */
- padchar, /* Padding character to send */
- eol, /* End-Of-Line character to send */
- escchr, /* Connect command escape character */
- quote, /* Quote character in incoming data */
- qbin, /* character for binary quoting */
- **filelist, /* List of files to be sent */
- *filnam, /* Current file name */
- recpkt[MAXPACKSIZ], /* Receive packet buffer */
- packet[MAXPACKSIZ]; /* Packet buffer */
-
- FILE *fp,*fopen(); /* File pointer for current disk file */
- FILE *fopenb(),*(*kfopen)(); /* jgc dec 25th 1985 */
- /*
- * m a i n
- *
- * Main routine - parse command and options, set up the
- * tty lines, and dispatch to the appropriate routine.
- */
-
- main(argc,argv)
- int argc; /* Character pointers to and count of */
- char **argv; /* command line arguments */
- {
- char *cp; /* char pointer */
- int cflg, rflg, sflg; /* flags for CONNECT, RECEIVE, SEND */
-
- printf("%s",version); /* Print out the version number */
- if (argc < 2) usage(); /* Make sure there's a command line */
-
- cp = *++argv;
- argv++;
- argc -= 2; /* Set up pointers to args */
-
- /* Initialize these values */
- /* Hope the first packet will get across OK */
-
- eol = CR; /* EOL for outgoing packets */
- quote = '#'; /* Standard control-quote char "#" */
- pad = 0; /* No padding */
- padchar = '\0'; /* Use null if any padding wanted */
- timint = DEFTIME ; /* Default timeout */
-
- cflg = sflg = rflg = 0; /* Turn off all parse flags */
- /* qflag = FALSE; */ en8quote(FALSE); /* jgc dec 25th. 1985 */
- /* and not 8 bit quoting */
-
- escchr = ESCCHR; /* Default escape character */
- parity = DEFPAR; /* Default to no parity */
-
- while ((*cp) != NULLPTR) /* Parse characters in first arg. */
- switch (*cp++)
- {
- case 'c': /* C = Connect command */
- cflg++;
- break;
- case 's': /* S = Send command */
- sflg++;
- break;
- case 'r': /* R = Receive command */
- rflg++;
- break;
-
- case 'd': /* D = Increment debug mode count */
- debug++;
- break;
-
- case 'p': /* P = Set parity */
- parity = *cp++;
- if ((parity=='n')||(parity=='N')) parity='\0';
- if (!parity) break; /* jgc dec 25th. 1985 */
-
- case 'q': /* q = Do 8 bit quoting */
- /* qflag = TRUE; */ en8quote(TRUE); /* jgc dec 25th. 1985 */
- break;
-
- }
-
- /* Done parsing */
-
- if ((cflg+sflg+rflg) != 1) usage(); /* Only one command allowed */
-
- /* All set up, now execute the command that was given. */
-
- if (debug)
- {
- printf("Debugging level = %d\n\n",debug);
- if (cflg) printf("Connect command\n\n");
- if (sflg) printf("Send command\n\n");
- if (rflg) printf("Receive command\n\n");
- }
-
- if (cflg) connect(); /* Connect command */
-
- if (sflg) /* Send command */
- {
- if (argc--) filnam = *argv++; /* Get file to send */
- else
- {
- usage();
- }
- fp = NULLPTR; /* Indicate no file open yet */
- filelist = argv; /* Set up the rest of the file list */
- filecount = argc; /* Number of files left to send */
- if (sendsw() == FALSE) /* Send the file(s) */
- printmsg("Send failed."); /* Report failure */
- else /* or */
- printmsg("done."); /* success */
- }
-
- if (rflg) /* Receive command */
- {
- if (recsw() == FALSE) /* Receive the file(s) */
- printmsg("Receive failed.");
- else /* Report failure */
- printmsg("done."); /* or success */
- }
- /* Restore controlling tty's modes */
- }
-
-
- /*
- * s e n d s w
- *
- * Sendsw is the state table switcher for sending files. It loops until
- * either it finishes, or an error is encountered. The routines called
- * by sendsw are responsible for changing the state.
- *
- */
-
- sendsw()
- {
- char sinit(), sfile(), sdata(), seof(), sbreak();
-
- state = 'S'; /* Send initiate is the start state */
- n = 0; /* Initialize message number */
- numtry = 0; /* Say no tries yet */
- while(TRUE) /* Do this as long as necessary */
- {
- if (debug) printf("sendsw state: %c\n",state);
- switch(state)
- {
- case 'S':
- state = sinit();
- break; /* Send-Init */
- case 'F':
- state = sfile();
- break; /* Send-File */
- case 'D':
- state = sdata();
- break; /* Send-Data */
- case 'Z':
- state = seof();
- break; /* Send-End-of-File */
- case 'B':
- state = sbreak();
- break; /* Send-Break */
- case 'C':
- return (TRUE); /* Complete */
- case 'A':
- return (FALSE); /* "Abort" */
- default:
- return (FALSE); /* Unknown, fail */
- }
- }
- }
-
-
- /*
- * s i n i t
- *
- * Send Initiate: send this host's parameters and get other side's back.
- */
-
- char sinit()
- {
- int num, len; /* Packet number, length */
- /* If too many tries, give up */
- if (numtry++ > MAXTRY) return('A');
- len = spar(packet); /* Fill up init info packet */
-
- flushinput(); /* Flush pending input */
-
- spack('S',n,len,packet); /* Send an S packet */
- switch(rpack(&len,&num,recpkt)) /* What was the reply? */
- {
- case 'N':
- return(state); /* NAK, try it again */
-
- case 'Y': /* ACK */
- if (n != num) /* If wrong ACK, stay in S state */
- return(state); /* and try again */
- rpar(recpkt,len); /* Get other side's init info */
-
- numtry = 0; /* Reset try counter */
- n = (n+1)%64; /* Bump packet count */
- return('F'); /* OK, switch state to F */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE:
- return(state); /* Receive failure, try again */
-
- default:
- return('A'); /* Anything else, just "abort" */
- }
- }
-
-
- /*
- * s f i l e
- *
- * Send File Header.
- */
-
- char sfile()
- {
- int num, len; /* Packet number, length */
- char filnam1[50], /* Converted file name */
- *newfilnam, /* Pointer to file name to send */
- *cp; /* char pointer */
- /* If too many tries, give up */
- if (numtry++ > MAXTRY) return('A');
-
- if (fp == NULLPTR) /* If not already open, */
- {
- if (debug) printf("\tOpening %s for sending.\n",filnam);
- fp = (*kfopen)(filnam,"r"); /* open the file to be sent */
- if (fp == NULLPTR) /* If bad file pointer, give up */
- {
- error("Cannot open file %s",filnam);
- return('A');
- }
- }
-
- strcpy(filnam1, filnam); /* Copy file name */
- newfilnam = cp = filnam1;
- while (*cp != '\0') /* Strip off all leading directory */
- if (*cp++ == '/') /* names (ie. up to the last /). */
- newfilnam = cp;
-
- for (cp = newfilnam; *cp != '\0'; cp++)
- if (*cp >= 'a' && *cp <= 'z')
- *cp ^= 040;
-
- len = (int)(cp - newfilnam); /* Compute length of new filename */
-
- printmsg("Sending %s as %s",filnam,newfilnam);
-
- spack('F',n,len,newfilnam); /* Send an F packet */
- switch(rpack(&len,&num,recpkt)) /* What was the reply? */
- {
- case 'N': /* NAK, just stay in this state, */
- /* unless it's NAK for next packet */
- num = (--num<0 ? 63:num);
- if (n != num) /* which is just like an ACK for */
- return(state); /* this packet so fall thru to... */
-
- case 'Y': /* ACK */
- if (n != num) return(state); /* If wrong ACK, stay in F state */
- numtry = 0; /* Reset try counter */
- n = (n+1)%64; /* Bump packet count */
- size = bufill(packet); /* Get first data from file */
- return('D'); /* Switch state to D */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE:
- return(state); /* Receive failure, stay in F state */
-
- default:
- return('A'); /* Something else, just "abort" */
- }
- }
-
-
- /*
- * s d a t a
- *
- * Send File Data
- */
-
- char sdata()
- {
- int num, len; /* Packet number, length */
-
- if (numtry++ > MAXTRY) return('A'); /* If too many tries, give up */
-
- spack('D',n,size,packet); /* Send a D packet */
- switch(rpack(&len,&num,recpkt)) /* What was the reply? */
- {
- case 'N': /* NAK, just stay in this state, */
- /* unless it's NAK for next packet */
- num = (--num<0 ? 63:num);
- if (n != num) /* which is just like an ACK for */
- return(state); /* this packet so fall thru to... */
-
- case 'Y': /* ACK */
- if (n != num) return(state); /* If wrong ACK, fail */
- numtry = 0; /* Reset try counter */
- n = (n+1)%64; /* Bump packet count */
- if ((size = bufill(packet)) == EOF) /* Get data from file */
- return('Z'); /* If EOF set state to that */
- return('D'); /* Got data, stay in state D */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE:
- return(state); /* Receive failure, stay in D */
-
- default:
- return('A'); /* Anything else, "abort" */
- }
- }
-
-
- /*
- * s e o f
- *
- * Send End-Of-File.
- */
-
- char seof()
- {
- int num, len; /* Packet number, length */
- if (numtry++ > MAXTRY) return('A'); /* If too many tries, "abort" */
-
- spack('Z',n,0,packet); /* Send a 'Z' packet */
- switch(rpack(&len,&num,recpkt)) /* What was the reply? */
- {
- case 'N': /* NAK, just stay in this state, */
- /* unless it's NAK for next packet, */
- num = (--num<0 ? 63:num);
- if (n != num) /* which is just like an ACK for */
- return(state); /* this packet so fall thru to... */
-
- case 'Y': /* ACK */
- if (n != num) return(state); /* If wrong ACK, hold out */
- numtry = 0; /* Reset try counter */
- n = (n+1)%64; /* and bump packet count */
- if (debug) printf("\tClosing input file %s, ",filnam);
- fclose(fp); /* Close the input file */
- fp = NULLPTR; /* Set flag indicating no file open */
-
- if (debug) printf("looking for next file...\n");
- if (gnxtfl() == FALSE) /* No more files go? */
- return('B'); /* if not, break, EOT, all done */
- if (debug) printf("\tNew file is %s\n",filnam);
- return('F'); /* More files, switch state to F */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE:
- return(state); /* Receive failure, stay in Z */
-
- default:
- return('A'); /* Something else, "abort" */
- }
- }
-
-
- /*
- * s b r e a k
- *
- * Send Break (EOT)
- */
-
- char sbreak()
- {
- int num, len; /* Packet number, length */
- if (numtry++ > MAXTRY) return('A'); /* If too many tries "abort" */
-
- spack('B',n,0,packet); /* Send a B packet */
- switch (rpack(&len,&num,recpkt)) /* What was the reply? */
- {
- case 'N': /* NAK, just stay in this state, */
- /* unless NAK for previous packet, */
- num = (--num<0 ? 63:num);
- if (n != num) /* which is just like an ACK for */
- return(state); /* this packet so fall thru to... */
-
- case 'Y': /* ACK */
- if (n != num) return(state); /* If wrong ACK, fail */
- numtry = 0; /* Reset try counter */
- n = (n+1)%64; /* and bump packet count */
- return('C'); /* Switch state to Complete */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE:
- return(state); /* Receive failure, stay in B */
-
- default:
- return ('A'); /* Other, "abort" */
- }
- }
-
-
- /*
- * r e c s w
- *
- * This is the state table switcher for receiving files.
- */
-
- recsw()
- {
- char rinit(), rfile(), rdata(); /* Use these procedures */
-
- state = 'R'; /* Receive-Init is the start state */
- n = 0; /* Initialize message number */
- numtry = 0; /* Say no tries yet */
-
- while(TRUE)
- {
- if (debug) printf("\trecsw state: %c\n",state);
- switch(state) /* Do until done */
- {
- case 'R':
- state = rinit();
- break; /* Receive-Init */
- case 'F':
- state = rfile();
- break; /* Receive-File */
- case 'D':
- state = rdata();
- break; /* Receive-Data */
- case 'C':
- return(TRUE); /* Complete state */
- case 'A':
- return(FALSE); /* "Abort" state */
- }
- }
- }
-
-
- /*
- * r i n i t
- *
- * Receive Initialization
- */
-
- char rinit()
- {
- int len, num; /* Packet length, number */
-
- if (numtry++ > MAXTRY) return('A'); /* If too many tries, "abort" */
-
- switch(rpack(&len,&num,packet)) /* Get a packet */
- {
- case 'S': /* Send-Init */
- rpar(packet,len); /* Get the other side's init data */
- len = spar(packet); /* Fill up packet with my init info */
- spack('Y',n,len,packet); /* ACK with my parameters */
- oldtry = numtry; /* Save old try count */
- numtry = 0; /* Start a new counter */
- n = (n+1)%64; /* Bump packet number, mod 64 */
- return('F'); /* Enter File-Receive state */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE: /* Didn't get packet */
- spack('N',n,0,NULLPTR); /* Return a NAK */
- return(state); /* Keep trying */
-
- default:
- return('A'); /* Some other packet type, "abort" */
- }
- }
-
-
- /*
- * r f i l e
- *
- * Receive File Header
- */
-
- char rfile()
- {
- int num, len; /* Packet number, length */
- char filnam1[50]; /* Holds the converted file name */
-
- if (numtry++ > MAXTRY) return('A'); /* "abort" if too many tries */
-
- switch(rpack(&len,&num,packet)) /* Get a packet */
- {
- case 'S': /* Send-Init, maybe our ACK lost */
- /* If too many tries "abort" */
- if (oldtry++ > MAXTRY) return('A');
- if (num == ((n==0) ? 63:n-1)) /* Previous packet, mod 64? */
- { /* Yes, ACK it again with */
- len = spar(packet); /* our Send-Init parameters */
- spack('Y',num,len,packet);
- numtry = 0; /* Reset try counter */
- return(state); /* Stay in this state */
- }
- else return('A'); /* Not previous packet, "abort" */
-
- case 'Z': /* End-Of-File */
- if (oldtry++ > MAXTRY) return('A');
- if (num == ((n==0) ? 63:n-1)) /* Previous packet, mod 64? */
- { /* Yes, ACK it again. */
- spack('Y',num,0,NULLPTR);
- numtry = 0;
- return(state); /* Stay in this state */
- }
- else return('A'); /* Not previous packet, "abort" */
-
- case 'F': /* File Header (just what we want) */
- /* The packet number must be right */
- if (num != n) return('A');
- strcpy(filnam1, packet); /* Copy the file name */
-
- if ((fp=(*kfopen)(filnam1,"w"))==NULLPTR) /* Try to open a new file */
- { /* Give up if can't */
- error("Cannot create %s",filnam1);
- return('A');
- }
- else /* OK, give message */
- printmsg("Receiving %s as %s",packet,filnam1);
-
- spack('Y',n,0,NULLPTR); /* Acknowledge the file header */
- oldtry = numtry; /* Reset try counters */
- numtry = 0;
- n = (n+1)%64; /* Bump packet number, mod 64 */
- return('D'); /* Switch to Data state */
-
- case 'B': /* Break transmission (EOT) */
- if (num != n) return ('A'); /* Need right packet number here */
- spack('Y',n,0,NULLPTR); /* Say OK */
- return('C'); /* Go to complete state */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE: /* Didn't get packet */
- spack('N',n,0,NULLPTR); /* Return a NAK */
- return(state); /* Keep trying */
-
- default:
- return ('A'); /* Some other packet, "abort" */
- }
- }
-
-
- /*
- * r d a t a
- *
- * Receive Data
- */
-
- char rdata()
- {
- int num, len; /* Packet number, length */
- if (numtry++ > MAXTRY) return('A'); /* "abort" if too many tries */
-
- switch(rpack(&len,&num,packet)) /* Get packet */
- {
- case 'D': /* Got Data packet */
- if (num != n) /* Right packet? */
- { /* No */
- if (oldtry++ > MAXTRY)
- return('A'); /* If too many tries, abort */
- if (num == ((n==0) ? 63:n-1))
- { /* Else check previous packet again? */
- spack('Y',num,0,NULLPTR); /* Yes, re-ACK it */
- numtry = 0; /* Reset try counter */
- return(state); /* Don't write out data! */
- }
- else return('A'); /* sorry, wrong number */
- }
- /* Got data with right packet number */
- bufemp(packet,len); /* Write the data to the file */
- spack('Y',n,0,NULLPTR); /* Acknowledge the packet */
- oldtry = numtry; /* Reset the try counters */
- numtry = 0; /* ... */
- n = (n+1)%64; /* Bump packet number, mod 64 */
- return('D'); /* Remain in data state */
-
- case 'F': /* Got a File Header */
- if (oldtry++ > MAXTRY)
- return('A'); /* If too many tries, "abort" */
- if (num == ((n==0) ? 63:n-1)) /* Else check packet number */
- { /* It was the previous one */
- spack('Y',num,0,NULLPTR); /* ACK it again */
- numtry = 0; /* Reset try counter */
- return(state); /* Stay in Data state */
- }
- else return('A'); /* Not previous packet, "abort" */
-
- case 'Z': /* End-Of-File */
- /* Must have right packet number */
- if (num != n) return('A');
- spack('Y',n,0,NULLPTR); /* OK, ACK it. */
- fclose(fp); /* Close the file */
- n = (n+1)%64; /* Bump packet number */
- return('F'); /* Go back to Receive File state */
-
- case 'E': /* Error packet received */
- prerrpkt(recpkt); /* Print it out and */
- return('A'); /* abort */
-
- case FALSE: /* Didn't get packet */
- spack('N',n,0,NULLPTR); /* Return a NAK */
- return(state); /* Keep trying */
-
- default:
- return('A'); /* Some other packet, "abort" */
- }
- }
-
- /*
- * c o n n e c t
- *
- * Establish a virtual terminal connection with the remote host, over an
- * assigned tty line.
- */
-
- connect()
- {
- /* This routine assumes that iobyte has been fully implemented */
- /* so that the program can check for input at the serial port. */
- /* It assumes that the normal keyboard is the CRT: device. */
- /* and the serial port is the TTY: device */
- /* This routine is the one most likely to need changing for other machines */
- register long iobyte;
- iobyte=bios(19) & ~3;
- printf("Connected\n");
- while (1)
- {
- iobyte |=1;
- bios(20,iobyte); /* Set console device to keyboard */
- /* Check for console input */
- if (bios(2)) readcon();
- iobyte &= ~3; /* Set console device to serial */
- bios(20,iobyte);
- if (bios(2))
- {
- iobyte |=1;
- bios(20,iobyte);
- bios(4,(long)(bios(7)& 0x7f));
- }
- }
- }
-
- readcon()
- {
- /* This reads the console */
- register int c;
- c=bios(3); /* Read the keyboard */
- if (c!=0x1d) sendaux(c); /* If not CTRL ] */
- else exit(0);
- }
-
- /*
- * KERMIT utilities.
- */
-
- /*
- * s p a c k
- *
- * Send a Packet
- */
-
- spack(type,num,len,data)
- char type, *data;
- int num, len;
- {
- int i; /* Character loop counter */
- char chksum, buffer[100]; /* Checksum, packet buffer */
- register char *bufp; /* Buffer pointer */
-
- if (debug>1) /* Display outgoing packet */
- { /* Null-terminate data to print it */
- if (data != NULLPTR) data[len] = '\0';
- printf("\tspack type: %c\n",type);
- printf("\t\tnum: %d\n",num);
- printf("\t\tlen: %d\n",len);
- if (data != NULLPTR)
- printf("\tdata: \"%s\"\n",data);
- }
-
- bufp = buffer; /* Set up buffer pointer */
- for (i=1; i<=pad; i++) sendaux(padchar); /* Issue any padding */
-
- *bufp++ = SOH; /* Packet marker, ASCII 1 (SOH) */
- *bufp++ = tochar(len+3); /* Send the character count */
- chksum = tochar(len+3); /* Initialize the checksum */
- *bufp++ = tochar(num); /* Packet number */
- chksum += tochar(num); /* Update checksum */
- *bufp++ = type; /* Packet type */
- chksum += type; /* Update checksum */
-
- for (i=0; i<len; i++) /* Loop for all data characters */
- {
- *bufp++ = data[i]; /* Get a character */
- chksum += data[i]; /* Update checksum */
- }
- chksum = (((chksum&0300) >> 6)+chksum)&077; /* Compute final checksum */
- *bufp++ = tochar(chksum); /* Put it in the packet */
- *bufp = eol; /* Extra-packet line terminator */
- sauxstr( buffer,(int)(bufp-buffer+1)); /* Send the packet */
- }
-
- /*
- * r p a c k
- *
- * Read a Packet
- */
-
- rpack(len,num,data)
- int *len, *num; /* Packet length, number */
- char *data; /* Packet data */
- {
- int i, done; /* Data character number, loop exit */
- char t, /* Current input character */
- type, /* Packet type */
- cchksum, /* Our (computed) checksum */
- rchksum; /* Checksum received from other host */
-
- do
- {
- t=readaux()& 0x7f;
- }while (t != SOH); /* Wait for packet header */
-
- done = FALSE; /* Got SOH, init loop */
- while (!done) /* Loop to get a packet */
- {
- t=readaux(); /* Get character */
- if (t == SOH) continue; /* Resynchronize if SOH */
- cchksum = t; /* Start the checksum */
- *len = unchar(t)-3; /* Character count */
-
- t=readaux(); /* Get character */
- if (t == SOH) continue; /* Resynchronize if SOH */
- cchksum += t; /* Update checksum */
- *num = unchar(t); /* Packet number */
-
- t=readaux(); /* Get character */
- if (t == SOH) continue; /* Resynchronize if SOH */
- cchksum += t; /* Update checksum */
- type = t; /* Packet type */
-
- for (i=0; i<*len; i++) /* The data itself, if any */
- { /* Loop for character count */
- t=readaux(); /* Get character */
- if (t == SOH) continue; /* Resynch if SOH */
- cchksum += t; /* Update checksum */
- data[i] = t; /* Put it in the data buffer */
- }
- data[*len] = 0; /* Mark the end of the data */
-
- t=readaux(); /* Get last character (checksum) */
- rchksum = unchar(t); /* Convert to numeric */
- t=readaux(); /* get EOL character and toss it */
- if (t == SOH) continue; /* Resynchronize if SOH */
- done = TRUE; /* Got checksum, done */
- }
- if (debug>1) /* Display incoming packet */
- {
- data[*len] = '\0'; /* Null-terminate data to print it */
- printf("\trpack type: %c\n",type);
- printf("\t\tnum: %d\n",*num);
- printf("\t\tlen: %d\n",*len);
- printf("\tdata: \"%s\"\n",data);
- }
- /* Fold in bits 7,8 to compute */
- cchksum = (((cchksum&0300) >> 6)+cchksum)&077; /* final checksum */
-
- if (cchksum != rchksum) return(FALSE);
- return(type); /* All OK, return packet type */
- }
-
-
- /*
- * b u f i l l
- *
- * Get a bufferful of data from the file that's being sent.
- * Only control-quoting and 8-bit quoting is done;
- * repeat count prefixes are not handled.
- */
-
- bufill(buffer)
- char buffer[]; /* Buffer */
- {
- register int t; /* Char read from file */
- register char t7; /* 7-bit version of above */
- register char *buffend; /* End of buffer pointer */
- register char *buffp; /* Pointer into buffer */
- register int unprintable; /* Is a character printable ?*/
-
- buffend = &buffer[spsiz-9]; /* set up end of buffer pointer */
- buffp=buffer; /* and the current position */
-
- while((t = getc(fp)) != EOF) /* Get the next character */
- {
- t7 = t & 0177; /* Get low order 7 bits */
-
- /* If doing 8-bit quoting, then quote if needed */
- if ((t != t7) && qflag) *buffp++ = qbin;
- unprintable = ((t7<SP)||(t7==DEL));
- /* Does this char require special handling? */
- if ((unprintable) || t7==quote ||(qflag && (t7==qbin)))
- {
- *buffp++ = quote; /* Quote the character */
- if (unprintable)
- { /* will be printable if a quote char */
- t = ctl(t); /* and uncontrolify */
- t7 = ctl(t7);
- }
- }
- *buffp++ = t;
- /* Check length */
- if (buffp >=buffend) return((int)(buffp-buffer));
- }
- if (buffp == buffer) return(EOF); /* Wind up here only on EOF */
- return((int)(buffp - buffer)); /* Handle partial buffer */
- }
-
-
- /*
- * b u f e m p
- *
- * Put data from an incoming packet into a file.
- */
-
- bufemp(buffer,len)
- char buffer[]; /* Buffer */
- int len; /* Length */
- {
- register int i; /* Counter */
- register char t; /* Character holder */
- register int highbit; /* place to hold quoted highbit */
-
- highbit = 0;
- for (i=0; i<len; i++) /* Loop thru the data field */
- {
- t = buffer[i]; /* Get a character */
- /* If doing 8-bit quoting and this is such a quote
- then note it */
- if (qflag && (t==qbin)) {
- highbit = 0x80;
- t=buffer[++i];
- }
- if (t == MYQUOTE) /* Control quote? */
- { /* Yes */
- t = buffer[++i]; /* Get the quoted character */
- /* Low order bits match quote char? */
- if (((t & 0177) != MYQUOTE) &&
- (!qflag || ((t & 0x7F)!=qbin)))
- t = ctl(t); /* No, uncontrollify it */
- }
- t |= highbit; /* set top bit if needed */
- highbit=0;
- putc(t,fp);
- }
- }
-
-
- /*
- * g n x t f l
- *
- * Get next file in a file group
- */
-
- gnxtfl()
- {
- filnam = *(filelist++);
- if (filecount-- == 0) return FALSE; /* If no more, fail */
- else return TRUE; /* else succeed */
- }
-
-
- /*
- * s p a r
- *
- * Fill the data array with my send-init parameters
- *
- */
-
- int
- spar(data)
- char data[];
- {
- data[0] = tochar(MYPACKSIZ); /* Biggest packet I can receive */
- data[1] = tochar(MYTIME); /* When I want to be timed out */
- data[2] = tochar(MYPAD); /* How much padding I need */
- data[3] = ctl(MYPCHAR); /* Padding character I want */
- data[4] = tochar(MYEOL); /* End-Of-Line character I want */
- data[5] = MYQUOTE; /* Control-Quote character I send */
- data[6] = qflag?QBIN:'Y'; /* Request 8 bit quoting */
- return (7); /* return number of parameters */
- }
-
-
- /* r p a r
- *
- * Get the other host's send-init parameters
- *
- */
-
- rpar(data,len)
- char data[];
- int len;
- {
- spsiz = DEFMAXL; /* default packet size */
- timint = DEFTIME;
- pad = DEFPAD;
- padchar = DEFPADC;
- eol = DEFEOL;
- quote = DEFQUOTE;
- qbin = DEFQBIN;
- switch (len){
- default:
- case 10: /* attributes */
- case 9: /* repeat count */
- case 8: /* Check type */
- case 7: /* 8 bit quoting */
- qbin = data[6];
- if (((qbin >='!') && (qbin <= '>'))
- || ((qbin >= '`')&&(qbin <= '~')))
- /* qflag = TRUE; */ en8quote(TRUE); /* jgc dec 25th. 1985 */
- case 6: /* Incoming data quote character */
- quote = data[5];
- case 5: /* EOL character I must send */
- eol = unchar(data[4]);
- case 4: /* Padding character I must send */
- padchar = ctl(data[3]);
- case 3: /* Number of pads to send */
- pad = unchar(data[2]);
- case 2: /* When I should time out */
- timint = unchar(data[1]);
- if ((timint > MAXTIM) || (timint < MINTIM)) timint = MYTIME;
- case 1: /* Maximum send packet size */
- spsiz = unchar(data[0]);
- case 0:
- break;
- }
- if (qflag) {
- if (qbin == 'N') error("Can't do 8 bit quoting\n");
- else if (qbin == 'Y') qbin = QBIN;
- }
- }
-
- int
- readaux()
- {
- int c;
- c=bios(7);
- if (parity) c &= 0x7f;
- return (c);
- }
-
- sauxstr(buf,len)
- char *buf;
- int len;
- {
- for(;len>0;len--)
- sendaux(*buf++);
- }
-
- sendaux(c)
- int c;
- {
- /* A table giving even parity, used also to get odd parity */
- static char partab[128]={
- 0x00,0x81,0x82,0x03,0x84,0x05,0x06,0x87,
- 0x88,0x09,0x0A,0x8B,0x0C,0x8D,0x8E,0x0F,
- 0x90,0x11,0x12,0x93,0x14,0x95,0x96,0x17,
- 0x18,0x99,0x9A,0x1B,0x9C,0x1D,0x1E,0x9F,
- 0xA0,0x21,0x22,0xA3,0x24,0xA5,0xA6,0x27,
- 0x28,0xA9,0xAA,0x2B,0xAC,0x2D,0x2E,0xAF,
- 0x30,0xB1,0xB2,0x33,0xB4,0x35,0x36,0xB7,
- 0xB8,0x39,0x3A,0xBB,0x3C,0xBD,0xBE,0x3F,
- 0xC0,0x41,0x42,0xC3,0x44,0xC5,0xC6,0x47,
- 0x48,0xC9,0xCA,0x4B,0xCC,0x4D,0x4E,0xCF,
- 0x50,0xD1,0xD2,0x53,0xD4,0x55,0x56,0xD7,
- 0xD8,0x59,0x5A,0xDB,0x5C,0xDD,0xDE,0x5F,
- 0x60,0xE1,0xE2,0x63,0xE4,0x65,0x66,0xE7,
- 0xE8,0x69,0x6A,0xEB,0x6C,0xED,0xEE,0x6F,
- 0xF0,0x71,0x72,0xF3,0x74,0xF5,0xF6,0x77,
- 0x78,0xF9,0xFA,0x7B,0xFC,0x7D,0x7E,0xFF
- };
-
- if (parity)
- {
- c &= 0x7f;
- switch(parity)
- {
- case 'o':
- case 'O':
- c=partab[c] ^ 0x80;
- break;
- case 'e':
- case 'E':
- c=partab[c];
- break;
- case 'm':
- case 'M':
- c |= 0x80;
- break;
- /* Otherwise assume space parity */
- }
- }
- bios(6,(long)c); /* Send character */
- }
-
- /*
- * f l u s h i n p u t
- *
- * Dump all pending input to clear stacked up NACK's.
- * (Implemented only for Berkeley Unix at this time).
- */
-
- flushinput() /* Null version for non-Berkeley Unix */
- {
- }
-
-
- /*
- * Kermit printing routines:
- *
- * usage - print command line options showing proper syntax
- * printmsg - like printf with "Kermit: " prepended
- * error - like printmsg
- * prerrpkt - print contents of error packet received from remote host
- */
-
- /*
- * u s a g e
- *
- * Print summary of usage info and quit
- */
-
- usage()
- {
- printf("Usage: kermit c[p[msoeN]]\t\t(connect mode)\n");
- printf("or:\tkermit s[dqp[msoeN]] file ...\t\t(send mode)\n");
- printf("or:\tkermit r[dqp[msoeN]]\t\t\t(receive mode)\n");
- exit(1);
- }
-
- /*
- * p r i n t m s g
- *
- * Print message on standard output if not remote.
- */
-
- /*VARARGS1*/
- printmsg(fmt, a1, a2, a3, a4, a5)
- char *fmt;
- {
- printf("Kermit: ");
- printf(fmt,a1,a2,a3,a4,a5);
- printf("\n");
- fflush(stdout); /* force output (UTS needs it) */
- }
-
- /*
- * e r r o r
- *
- * Print error message.
- *
- * If local, print error message with printmsg.
- * If remote, send an error packet with the message.
- */
-
- /*VARARGS1*/
- error(fmt, a1, a2, a3, a4, a5)
- char *fmt;
- {
- printmsg(fmt, a1, a2, a3, a4, a5);
- }
-
- /*
- * p r e r r p k t
- *
- * Print contents of error packet received from remote host.
- */
- prerrpkt(msg)
- char *msg;
- {
- printf("Kermit aborting with following error from remote host:\n%s\n",
- msg);
- return;
- }
-
- en8quote(t) int t; { /* jgc dec 25th. 1985 */
- if (qflag = t) kfopen = fopenb; /* jgc dec 25th. 1985 */
- else kfopen = fopen; /* jgc dec 25th. 1985 */
- } /* jgc dec 25th. 1985 */
- } /* jgc dec
- **** END OF FILE ***************************************************************
-