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OS/2 Shareware BBS: 2 BBS
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BTMTSRC3.ZIP
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RECVBARK.C
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1990-07-11
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10KB
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/*--------------------------------------------------------------------------*/
/* */
/* */
/* ------------ Bit-Bucket Software, Co. */
/* \ 10001101 / Writers and Distributors of */
/* \ 011110 / Freely Available<tm> Software. */
/* \ 1011 / */
/* ------ */
/* */
/* (C) Copyright 1987-90, Bit Bucket Software Co., a Delaware Corporation. */
/* */
/* */
/* This module was written by Bob Hartman */
/* */
/* */
/* BinkleyTerm "BARK" File request state machine */
/* */
/* */
/* For complete details of the licensing restrictions, please refer */
/* to the License agreement, which is published in its entirety in */
/* the MAKEFILE and BT.C, and also contained in the file LICENSE.240. */
/* */
/* USE OF THIS FILE IS SUBJECT TO THE RESTRICTIONS CONTAINED IN THE */
/* BINKLEYTERM LICENSING AGREEMENT. IF YOU DO NOT FIND THE TEXT OF */
/* THIS AGREEMENT IN ANY OF THE AFOREMENTIONED FILES, OR IF YOU DO */
/* NOT HAVE THESE FILES, YOU SHOULD IMMEDIATELY CONTACT BIT BUCKET */
/* SOFTWARE CO. AT ONE OF THE ADDRESSES LISTED BELOW. IN NO EVENT */
/* SHOULD YOU PROCEED TO USE THIS FILE WITHOUT HAVING ACCEPTED THE */
/* TERMS OF THE BINKLEYTERM LICENSING AGREEMENT, OR SUCH OTHER */
/* AGREEMENT AS YOU ARE ABLE TO REACH WITH BIT BUCKET SOFTWARE, CO. */
/* */
/* */
/* You can contact Bit Bucket Software Co. at any one of the following */
/* addresses: */
/* */
/* Bit Bucket Software Co. FidoNet 1:104/501, 1:132/491, 1:141/491 */
/* P.O. Box 460398 AlterNet 7:491/0 */
/* Aurora, CO 80046 BBS-Net 86:2030/1 */
/* Internet f491.n132.z1.fidonet.org */
/* */
/* Please feel free to contact us at any time to share your comments about */
/* our software and/or licensing policies. */
/* */
/*--------------------------------------------------------------------------*/
/* System include files */
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#ifdef __TURBOC__
#include <mem.h>
#include <alloc.h>
#else
#include <memory.h>
#include <malloc.h>
#endif
/* Local include files */
#include "defines.h"
#include "com.h"
#include "xfer.h"
#include "zmodem.h"
#include "keybd.h"
#include "sbuf.h"
#include "sched.h"
#include "externs.h"
#include "prototyp.h"
static int get_req_str (char *);
static void gen_req_name (char *);
static int cdog_callback(char *);
int RBInit (BARKARGSP, int);
int RBEnd (BARKARGSP, int);
int RBHonorReq (BARKARGSP);
int RBWaitBark (BARKARGSP);
int RBAckBark (BARKARGSP);
int RBWaitStrt (BARKARGSP);
int RBSendFile (BARKARGSP);
STATES Bark_Receiver[] = {
{ "RBInit", RBInit },
{ "RBEnd", RBEnd },
{ "RB0", RBHonorReq },
{ "RB1", RBWaitBark },
{ "RB2", RBAckBark },
{ "RB3", RBWaitStrt },
{ "RB4", RBSendFile }
};
int Receive_Bark_Packet (args)
BARKARGSP args;
{
if (get_req_str (args->barkpacket))
{
gen_req_name (args->barkpacket);
args->barkok = 1;
return (0);
}
return (1);
}
int RBInit (args, start_state)
BARKARGSP args;
int start_state;
{
XON_DISABLE ();
args->barkok = 0;
return (start_state);
}
int RBEnd (args, cur_state)
BARKARGSP args;
int cur_state;
{
if (!no_requests)
{
status_line (":%s %s %s", msgtxt[M_END_OF], msgtxt[M_INBOUND], msgtxt[M_FILE_REQUESTS]);
}
return (cur_state);
args;
}
int RBHonorReq (args)
BARKARGSP args;
{
args->nfiles = 0;
if (!no_requests)
{
status_line (":%s %s", msgtxt[M_INBOUND], msgtxt[M_FILE_REQUESTS]);
SENDBYTE (ENQ);
args->T1 = timerset (200);
return (RB1);
}
else
{
SENDBYTE (CAN);
status_line (msgtxt[M_REFUSING_IN_FREQ]);
return (SUCCESS);
}
}
int RBWaitBark (args)
BARKARGSP args;
{
int c, done;
long RB1Timer;
done = 0;
RB1Timer = timerset (2000);
while (!done)
{
while ((c = PEEKBYTE ()) < 0)
{
if (!CARRIER)
return (CARRIER_ERR);
time_release ();
if (timeup (args->T1))
{
break;
}
}
if (timeup (RB1Timer))
{
/* Report error */
return (SENDBLOCK_ERR);
}
if ((c == 0xffff) && timeup (args->T1))
{
CLEAR_INBOUND ();
SENDBYTE (ENQ);
args->T1 = timerset (200);
continue;
}
c = TIMED_READ (0);
switch (c)
{
case ACK:
if (Receive_Bark_Packet (args) == 0)
return (RB2);
else
return (RB0);
case ETB:
/* Report done */
return (SUCCESS);
case ENQ:
SENDBYTE (ETB);
break;
}
}
}
int RBAckBark (args)
BARKARGSP args;
{
if (args->barkok)
{
SENDBYTE (ACK);
return (RB3);
}
else
{
SENDBYTE (NAK);
return (RB1);
}
}
int RBWaitStrt (args)
BARKARGSP args;
{
int c;
long RB3Timer;
long RB3Timer1;
RB3Timer = timerset (1500);
while (CARRIER && (!timeup (RB3Timer)))
{
RB3Timer1 = timerset (300);
while (!timeup (RB3Timer1))
{
if ((c = PEEKBYTE ()) >= 0)
break;
time_release ();
}
if (c == 0xffff)
SENDBYTE (ACK);
else if ((c == 'C') || (c == NAK))
return (RB4);
}
/* Return error */
return (SENDBLOCK_ERR);
args;
}
int RBSendFile (args)
BARKARGSP args;
{
int nfiles1;
int n_frproc (char *, int, int (*)(char *));
nfiles1 = args->nfiles;
if (((args->nfiles = n_frproc (args->barkpacket, args->nfiles, cdog_callback)) < 0)
|| nfiles1 == args->nfiles)
{
(void) Batch_Send (NULL);
}
else
{
(void) Batch_Send (NULL);
status_line (msgtxt[M_MATCHING_FILES], args->nfiles - nfiles1);
}
return (RB0);
}
int SEA_recvreq ()
{
BARKARGS bark;
Netmail_Session = 2;
CLEAR_INBOUND ();
return (state_machine (Bark_Receiver, &bark, RB0));
}
static int get_req_str (req)
char *req;
{
unsigned int crc, crc1, crc2, crc3;
int i, j;
crc = i = 0;
while (CARRIER)
{
j = TIMED_READ (2);
if (j < 0)
return (0);
if ((j == ACK) && (i == 0))
{
/* Just skip the extra ACK */
continue;
}
if (i >= 100)
{
/* Too long of a string */
status_line (msgtxt[M_BAD_BARK]);
CLEAR_INBOUND ();
return (0);
}
if (j == ETX)
{
crc1 = (unsigned) TIMED_READ (2);
crc2 = (unsigned) TIMED_READ (2);
crc3 = (crc2 << 8) + crc1;
if (crc3 != crc)
{
status_line (msgtxt[M_BAD_CRC]);
return (0);
}
req[i] = '\0';
return (1);
}
else if (j == SUB)
{
return (0);
}
else
{
req[i++] = (char) (j & 0xff);
crc = xcrc (crc, (j & 0xff));
}
}
return (0);
}
/*
* gen_req_name -- take the name [time] [password] fields from
* the BARK file request format and reformat to
* name [!password] [+time] WaZOO format for use
* by the WaZOO file request routines.
*
* Input: *req = pointer to character array with Bark string
* Output: *req array contents reformatted
*
*/
static void gen_req_name (req)
char *req;
{
char *q, *q1;
char buf[48];
char *fsecs = NULL;
q = req;
q1 = buf;
/* Get the filename */
while ((*q) && (!isspace (*q)))
{
*q1++ = *q++;
}
*q1 = '\0';
/* If we have more characters, go on */
if (*q)
{
/* Skip the space */
fsecs = q++;
*fsecs = '+';
/* Skip the digits */
while ((*q) && (!isspace (*q)))
q++;
/* If we have more, get the password */
if (*q)
{
*q++ = '\0'; /* Skip space, terminate the time */
*q1++ = ' ';
*q1++ = '!';
while (*q)
{
*q1++ = *q++;
}
*q1 = '\0';
}
/* If we got an update time */
if (fsecs != NULL)
{
*q1++ = ' ';
while (*fsecs)
{
*q1++ = *fsecs++;
}
*q1 = '\0';
}
}
(void) strcpy (req, buf);
return;
}
static int cdog_callback(reqs)
char *reqs;
{
return (!Batch_Send (reqs));
}