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*** ../../ek16/kermit.c 2011-03-30 12:40:09.705176000 -0400
--- kermit.c 2011-06-06 16:24:13.034202000 -0400
***************
*** 1,8 ****
#define KERMIT_C
/*
Embedded Kermit protocol module
! Version: 1.6
! Most Recent Update: Wed Mar 30 12:39:11 2011
No stdio or other runtime library calls, no system calls, no system
includes, no static data, and no global variables in this module.
--- 1,8 ----
#define KERMIT_C
/*
Embedded Kermit protocol module
! Version: 1.7
! Most Recent Update: Mon Jun 6 15:36:26 2011
No stdio or other runtime library calls, no system calls, no system
includes, no static data, and no global variables in this module.
***************
*** 98,104 ****
int i, j, rc; /* Workers */
int datalen; /* Length of packet data field */
- int bctu; /* Block check type for this packet */
UCHAR *p; /* Pointer to packet data field */
UCHAR *q; /* Pointer to data to be checked */
UCHAR *s; /* Worker string pointer */
--- 98,103 ----
***************
*** 313,319 ****
}
debug(DB_MSG,"HDR CHKSUM OK",0,0);
p[2] = c; /* Put checksum back */
! datalen = xunchar(p[0])*95 + xunchar(p[1]) - k->bct; /* Data length */
p += 3; /* Fix data pointer */
k->ipktinfo[r_slot].dat = p; /* Permanent record of data pointer */
} else { /* Regular packet */
--- 312,319 ----
}
debug(DB_MSG,"HDR CHKSUM OK",0,0);
p[2] = c; /* Put checksum back */
! /* Data length */
! datalen = xunchar(p[0])*95 + xunchar(p[1]) - ((k->bctf) ? 3 : k->bct);
p += 3; /* Fix data pointer */
k->ipktinfo[r_slot].dat = p; /* Permanent record of data pointer */
} else { /* Regular packet */
***************
*** 323,334 ****
--- 323,342 ----
}
#endif /* F_LP */
#ifdef F_CRC
+ if (k->bctf) { /* FORCE 3 */
+ chklen = 3;
+ } else {
if (t == 'S' || k->state == S_INIT) { /* S-packet was retransmitted? */
+ if (q[10] == '5') { /* Block check type requested is 5 */
+ k->bctf = 1; /* FORCE 3 */
+ chklen = 3;
+ }
chklen = 1; /* Block check is always type 1 */
datalen = k->ipktinfo[r_slot].len - 3; /* Data length */
} else {
chklen = k->bct;
}
+ }
#else
chklen = 1; /* Block check is always type 1 */
datalen = k->ipktinfo[r_slot].len - 3; /* Data length */
***************
*** 1031,1036 ****
--- 1039,1045 ----
if ((k->bct < 1) || (k->bct > 3))
#endif /* F_CRC */
k->bct = 1;
+ if (k->bctf) k->bct = 3;
}
if (datalen >= 9) { /* Repeat counts */
if ((s[9] > 32 && s[9] < 63) || (s[9] > 95 && s[9] < 127)) {
***************
*** 1120,1126 ****
d[ 6] = k->ebq = '&'; /* I need to request it */
else /* else just agree with other Kermit */
d[ 6] = k->ebq;
! d[ 7] = k->bct + '0'; /* Block check type */
d[ 8] = k->rptq; /* Repeat prefix */
d[ 9] = tochar(k->capas); /* Capability bits */
d[10] = tochar(k->window); /* Window size */
--- 1129,1138 ----
d[ 6] = k->ebq = '&'; /* I need to request it */
else /* else just agree with other Kermit */
d[ 6] = k->ebq;
! if (k->bctf) /* Block check type */
! d[7] = '5'; /* FORCE 3 */
! else
! d[7] = k->bct + '0'; /* Normal */
d[ 8] = k->rptq; /* Repeat prefix */
d[ 9] = tochar(k->capas); /* Capability bits */
d[10] = tochar(k->window); /* Window size */
***************
*** 1136,1143 ****
--- 1148,1157 ----
#endif /* F_LP */
#ifdef F_CRC
+ if (!(k->bctf)) { /* Unless FORCE 3 */
b = k->bct;
k->bct = 1; /* Always use block check type 1 */
+ }
#endif /* F_CRC */
switch (type) {
case 'Y': /* This is an ACK for packet 0 */
***************
*** 1150,1156 ****
--- 1164,1172 ----
rc = -1;
}
#ifdef F_CRC
+ if (!(k->bctf)) { /* Unless FORCE 3 */
k->bct = b;
+ }
#endif /* F_CRC */
return(rc); /* Pass along return code. */
}
***************
*** 1510,1516 ****
--- 1526,1534 ----
STATIC void
epkt(char * msg, struct k_data * k) {
+ if (!(k->bctf)) { /* Unless FORCE 3 */
k->bct = 1;
+ }
(void) spkt('E', 0, -1, (UCHAR *) msg, k);
}
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