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- /*
- * os9sen.c send file routines of os9 kermit
- */
-
- #include "os9inc.h"
-
- /*
- * 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 */
- for (;;) { /* Do this as long as necessary */
- if (debug)
- printf("sendsw state: %c, Packet # %d\n",state,n);
- if ((!remot) && (!debug))
- if (n % 10 == 0)
- printmsg("Status: Sending Packet # %d",n);
-
- 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 (numtry++ > MAXTRY)
- return('A'); /* If too many tries, give up */
- spar(packet); /* Fill up init info packet */
-
- flushinput(); /* Flush pending input */
-
- spack('S', n, 6, 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); /* Get other side's init info */
-
- if (eol == 0) eol = '\n'; /* Check and set defaults */
- if (quote == 0) quote = '#';
-
- 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 (numtry++ > MAXTRY)
- return('A'); /* If too many tries, give up */
-
- if (gflg == 0) { /* If Get mode just send name */
- if (fp == NULL) { /* If not already open, */
- if (debug)
- printf(" Opening %s for sending.\n",filnam);
- /* open the file to be sent */
- fp = fopen(filnam,"r");
- if (fp == NULL) {
- /* bad file pointer, give up */
- error("Cannot open file %s",filnam);
- return('A');
- }
- }
- }
-
- strcpy(filnam1, filnam); /* Copy file name */
- newfilnam = cp = filnam1;
- if (!gflg) /* if not in get routine */
- while (*cp != '\0') /* Strip off all leading directory */
- if (*cp++ == '/') /* names (ie. up to the last /). */
- newfilnam = cp;
-
- if (filnamcnv) /* Convert lower case to upper */
- for (cp = newfilnam; *cp != '\0'; cp++)
- if (*cp >= 'a' && *cp <= 'z')
- *cp ^= 040;
-
- len = cp - newfilnam; /* Compute length of new filename */
-
- if (gflg == 0) { /* If not Get function */
- printmsg("Sending %s as %s", filnam, newfilnam);
- spack('F', n, len, newfilnam); /* Send an F packet */
- } else {
- spack('R', n, len, newfilnam); /* Send Get file packet */
- return('R');
- }
-
- switch(rpack(&len, &num, recpkt)) { /* What was the reply? */
- case 'N': /* NAK, just stay in this state, */
- num = (--num<0 ? 63:num); /* unless it's NAK for next packet */
- if (n != num) /* which is just like an ACK for */
- return(state); /* this packet so fall thru to... */
-
- case 'Y': /* ACK */
- if (gflg != 0) /* Test if get function */
- return('D'); /* If so no number check, Done */
- 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, */
- num = (--num<0 ? 63:num); /* unless it's next packet's NAK */
- 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, */
- num = (--num<0 ? 63:num); /* unless it's next packet's NAK, */
- 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(" Closing input file %s, ",filnam);
- fclose(fp); /* Close the input file */
- fp = NULL; /* 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(" New 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, */
- num = (--num<0 ? 63:num); /* unless previous packet's NAK, */
- 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" */
- }
- }
-