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Several zmodem code changes

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This commit is contained in:
Michiel Broek 2006-03-04 12:40:49 +00:00
parent 9293010a0b
commit d2ebff86f1
4 changed files with 76 additions and 71 deletions
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107
mbsebbs/zmmisc.c
View File

@ -77,7 +77,7 @@ int Rxtimeout = 10; /* Seconds to wait for something, receiver */
char *txbuf=NULL;
static int lastsent; /* Last char we sent */
static int Not8bit; /* Seven bits seen on header */
static char zsendline_tab[256];
extern unsigned Baudrate;
extern int zmodem_requested;
@ -171,7 +171,8 @@ void zsbhdr(int type, char *shdr)
register int n;
register unsigned short crc;
Syslog('z', "zsbhdr: %s %lx", frametypes[type+FTOFFSET], rclhdr(shdr));
Crc32t = Txfcs32;
Syslog('z', "zsbh%s: %s %lx", Crc32t ? "32":"dr", frametypes[type+FTOFFSET], rclhdr(shdr));
BUFFER_CLEAR();
@ -182,7 +183,7 @@ void zsbhdr(int type, char *shdr)
BUFFER_BYTE(ZPAD);
BUFFER_BYTE(ZDLE);
if ((Crc32t = Txfcs32))
if (Crc32t)
zsbh32(shdr, type);
else {
BUFFER_BYTE(ZBIN);
@ -321,7 +322,10 @@ void zsda32(register char *buf, int length, int frameend)
crc = 0xFFFFFFFFL;
for (;--length >= 0; ++buf) {
c = *buf & 0377;
zsendline(*buf);
if (c & 0140)
BUFFER_BYTE(lastsent = c);
else
zsendline(c);
crc = updcrc32(c, crc);
}
BUFFER_BYTE(ZDLE);
@ -332,11 +336,6 @@ void zsda32(register char *buf, int length, int frameend)
for (c=4; --c >= 0;) {
zsendline((int)crc); crc >>= 8;
}
// if (frameend == ZCRCW) {
// BUFFER_BYTE(XON);
// fflush(stdout);
// }
}
@ -477,7 +476,6 @@ void garbitch(void)
int zgethdr(char *shdr)
{
register int c, n, cancount, tmcount;
// int Zrwindow = 1400;
int Zrwindow = 1024;
n = Zrwindow + Baudrate;
@ -737,42 +735,65 @@ void zputhex(int c)
/*
* Send character c with ZMODEM escape sequence encoding.
* Escape XON, XOFF. Escape CR following @ (Telenet net escape)
* Escape XON, XOFF. Escape CR following @ (Telenet net escape)
*/
void zsendline(int c)
{
/* Quick check for non control characters */
if (c & 0140)
BUFFER_BYTE(lastsent = c);
else {
switch (c &= 0377) {
case ZDLE:
BUFFER_BYTE(ZDLE);
BUFFER_BYTE (lastsent = (c ^= 0100));
break;
case 015:
case 0215:
if (!Zctlesc && (lastsent & 0177) != '@')
goto sendit;
/* **** FALL THRU TO **** */
case 020:
case 021:
case 023:
case 0220:
case 0221:
case 0223:
BUFFER_BYTE(ZDLE);
c ^= 0100;
sendit:
BUFFER_BYTE(lastsent = c);
break;
default:
if (Zctlesc && ! (c & 0140)) {
BUFFER_BYTE(ZDLE);
c ^= 0100;
}
BUFFER_BYTE(lastsent = c);
switch(zsendline_tab[(unsigned) (c&=0377)]) {
case 0: BUFFER_BYTE(lastsent = c);
break;
case 1: BUFFER_BYTE(ZDLE);
c ^= 0100;
BUFFER_BYTE(lastsent = c);
break;
case 2: if ((lastsent & 0177) != '@') {
BUFFER_BYTE(lastsent = c);
} else {
BUFFER_BYTE(ZDLE);
c ^= 0100;
BUFFER_BYTE(lastsent = c);
}
break;
}
}
void zsendline_init(void)
{
int i;
Syslog('z', "zendline_init() Zctlesc=%d", Zctlesc);
for (i = 0; i < 256; i++) {
if (i & 0140)
zsendline_tab[i] = 0;
else {
switch(i) {
case ZDLE:
case XOFF: /* ^Q */
case XON: /* ^S */
case (XOFF | 0200):
case (XON | 0200):
zsendline_tab[i]=1;
break;
case 020: /* ^P */
case 0220:
zsendline_tab[i]=1;
break;
case 015:
case 0215:
if (Zctlesc)
zsendline_tab[i]=1;
else
zsendline_tab[i]=2;
break;
default:
if (Zctlesc)
zsendline_tab[i]=1;
else
zsendline_tab[i]=0;
}
}
}
}

3
mbsebbs/zmmisc.h
View File

@ -134,7 +134,7 @@ char Rxhdr[ZMAXHLEN]; /* Received header */
char Txhdr[ZMAXHLEN]; /* Transmitted header */
char Attn[ZATTNLEN+1]; /* Attention string rx sends to tx on err */
char *Altcan; /* Alternate canit string */
char Zsendmask[33]; /* Additional control characters to mask */
//char Zsendmask[33]; /* Additional control characters to mask */
int Zctlesc;
enum zm_type_enum {
@ -159,6 +159,7 @@ int zdlread(void);
void stohdr(int);
int rclhdr(register char *);
char *protname(void);
void zsendline_init(void);
void purgeline(int);
void canit(int);

1
mbsebbs/zmrecv.c
View File

@ -88,6 +88,7 @@ int zmrcvfiles(int want1k, int wantg)
Syslog('+', "%s: start receive", protname());
get_frame_buffer();
zsendline_init();
Rxtimeout = 10;
if (secbuf == NULL)

36
mbsebbs/zmsend.c
View File

@ -47,7 +47,6 @@ static int zfilbuf(void);
static int zsendfile(char*,int);
static int zsendfdata(void);
static int getinsync(int);
void initzsendmsk(char *);
static FILE *in;
static int Eofseen; /* EOF seen on input set by zfilbuf */
@ -90,6 +89,7 @@ int zmsndfiles(down_list *lst, int try8)
Syslog('+', "Zmodem: start Zmodem%s send", try8 ? "-8K":"");
get_frame_buffer();
zsendline_init();
use8k = try8;
protocol = ZM_ZMODEM;
@ -263,13 +263,13 @@ int getzrxinit(void)
case ZRINIT:
Rxflags = 0377 & Rxhdr[ZF0];
Txfcs32 = (Wantfcs32 && (Rxflags & CANFC32));
// {
// int old = Zctlesc;
{
int old = Zctlesc;
Zctlesc |= Rxflags & TESCCTL;
// /* update table - was initialised to not escape */
// if (Zctlesc && !old)
// zsendline_init();
// }
/* update table - was initialised to not escape */
if (Zctlesc && !old)
zsendline_init();
}
Rxbuflen = (0377 & Rxhdr[ZP0])+((0377 & Rxhdr[ZP1])<<8);
if ( !(Rxflags & CANFDX))
@ -333,7 +333,6 @@ int sendzsinit(void)
Txhdr[ZF0] |= TESCCTL; zshhdr(ZSINIT, Txhdr);
} else
zsbhdr(ZSINIT, Txhdr);
// zsdata(Myattn, ZATTNLEN, ZCRCW);
zsdata(Myattn, 1 + strlen(Myattn), ZCRCW);
c = zgethdr(Rxhdr);
switch (c) {
@ -504,7 +503,7 @@ gotack:
*/
if (TCHECK()) {
c = GETCHAR(1);
Syslog('z', "zsendfdata(): check getchar(1)=%d", c);
Syslog('z', "zsendfdata(): 1 check getchar(1)=%d %c", c, c);
if (c < 0) {
return c;
} else switch (c) {
@ -557,6 +556,7 @@ to:
*/
if (TCHECK()) {
c = GETCHAR(1);
Syslog('z', "zsendfdata(): 2 check getchar(1)=%d %c", c, c);
if (c < 0) {
return c;
} else switch (c) {
@ -669,21 +669,3 @@ int getinsync(int flag)
}
/*
* Set additional control chars to mask in Zsendmask
* according to bit array stored in char array at p
*/
void initzsendmsk(register char *p)
{
int c;
for (c = 0; c < 33; ++c) {
if (p[c>>3] & (1 << (c & 7))) {
Zsendmask[c] = 1;
Syslog('z', "Zmodem: Escaping %02o", c);
}
}
}