#define TRUE 1
#endif
-static Socket s = NULL;
-
-static void *frontend;
-static int telnet_term_width, telnet_term_height;
-
#define IAC 255 /* interpret as command: */
#define DONT 254 /* you are not to use option */
#define DO 253 /* please, you use option */
return "<unknown>";
}
-static void telnet_size(int width, int height);
+static void telnet_size(void *handle, int width, int height);
struct Opt {
int send; /* what we initially send */
int nsend; /* -ve send if requested to stop it */
int ack, nak; /* +ve and -ve acknowledgements */
int option; /* the option code */
+ int index; /* index into telnet->opt_states[] */
enum {
REQUESTED, ACTIVE, INACTIVE, REALLY_INACTIVE
- } state;
+ } initial_state;
+};
+
+enum {
+ OPTINDEX_NAWS,
+ OPTINDEX_TSPEED,
+ OPTINDEX_TTYPE,
+ OPTINDEX_OENV,
+ OPTINDEX_NENV,
+ OPTINDEX_ECHO,
+ OPTINDEX_WE_SGA,
+ OPTINDEX_THEY_SGA,
+ NUM_OPTS
};
-static struct Opt o_naws =
- { WILL, WONT, DO, DONT, TELOPT_NAWS, REQUESTED };
-static struct Opt o_tspeed =
- { WILL, WONT, DO, DONT, TELOPT_TSPEED, REQUESTED };
-static struct Opt o_ttype =
- { WILL, WONT, DO, DONT, TELOPT_TTYPE, REQUESTED };
-static struct Opt o_oenv = { WILL, WONT, DO, DONT, TELOPT_OLD_ENVIRON,
- INACTIVE
+static const struct Opt o_naws =
+ { WILL, WONT, DO, DONT, TELOPT_NAWS, OPTINDEX_NAWS, REQUESTED };
+static const struct Opt o_tspeed =
+ { WILL, WONT, DO, DONT, TELOPT_TSPEED, OPTINDEX_TSPEED, REQUESTED };
+static const struct Opt o_ttype =
+ { WILL, WONT, DO, DONT, TELOPT_TTYPE, OPTINDEX_TTYPE, REQUESTED };
+static const struct Opt o_oenv = { WILL, WONT, DO, DONT, TELOPT_OLD_ENVIRON,
+ OPTINDEX_OENV, INACTIVE
};
-static struct Opt o_nenv = { WILL, WONT, DO, DONT, TELOPT_NEW_ENVIRON,
- REQUESTED
+static const struct Opt o_nenv = { WILL, WONT, DO, DONT, TELOPT_NEW_ENVIRON,
+ OPTINDEX_NENV, REQUESTED
};
-static struct Opt o_echo =
- { DO, DONT, WILL, WONT, TELOPT_ECHO, REQUESTED };
-static struct Opt o_we_sga =
- { WILL, WONT, DO, DONT, TELOPT_SGA, REQUESTED };
-static struct Opt o_they_sga =
- { DO, DONT, WILL, WONT, TELOPT_SGA, REQUESTED };
-
-static struct Opt *opts[] = {
+static const struct Opt o_echo =
+ { DO, DONT, WILL, WONT, TELOPT_ECHO, OPTINDEX_ECHO, REQUESTED };
+static const struct Opt o_we_sga =
+ { WILL, WONT, DO, DONT, TELOPT_SGA, OPTINDEX_WE_SGA, REQUESTED };
+static const struct Opt o_they_sga =
+ { DO, DONT, WILL, WONT, TELOPT_SGA, OPTINDEX_THEY_SGA, REQUESTED };
+
+static const struct Opt *const opts[] = {
&o_naws, &o_tspeed, &o_ttype, &o_oenv, &o_nenv, &o_echo,
&o_we_sga, &o_they_sga, NULL
};
+typedef struct telnet_tag {
+ const struct plug_function_table *fn;
+ /* the above field _must_ be first in the structure */
+
+ Socket s;
+
+ void *frontend;
+ int term_width, term_height;
+
+ int opt_states[NUM_OPTS];
+
+ int echoing, editing;
+ int activated;
+ int bufsize;
+ int in_synch;
+ int sb_opt, sb_len;
+ char *sb_buf;
+ int sb_size;
+
+ enum {
+ TOP_LEVEL, SEENIAC, SEENWILL, SEENWONT, SEENDO, SEENDONT,
+ SEENSB, SUBNEGOT, SUBNEG_IAC, SEENCR
+ } state;
+
+} *Telnet;
+
#define TELNET_MAX_BACKLOG 4096
-static int echoing = TRUE, editing = TRUE;
-static int activated = FALSE;
-static int telnet_bufsize;
-static int in_synch;
-static int sb_opt, sb_len;
-static char *sb_buf = NULL;
-static int sb_size = 0;
#define SB_DELTA 1024
-static void c_write1(int c)
+static void c_write1(Telnet telnet, int c)
{
int backlog;
char cc = (char) c;
- backlog = from_backend(frontend, 0, &cc, 1);
- sk_set_frozen(s, backlog > TELNET_MAX_BACKLOG);
+ backlog = from_backend(telnet->frontend, 0, &cc, 1);
+ sk_set_frozen(telnet->s, backlog > TELNET_MAX_BACKLOG);
}
static void log_option(char *sender, int cmd, int option)
logevent(buf);
}
-static void send_opt(int cmd, int option)
+static void send_opt(Telnet telnet, int cmd, int option)
{
unsigned char b[3];
b[0] = IAC;
b[1] = cmd;
b[2] = option;
- telnet_bufsize = sk_write(s, b, 3);
+ telnet->bufsize = sk_write(telnet->s, b, 3);
log_option("client", cmd, option);
}
-static void deactivate_option(struct Opt *o)
+static void deactivate_option(Telnet telnet, const struct Opt *o)
{
- if (o->state == REQUESTED || o->state == ACTIVE)
- send_opt(o->nsend, o->option);
- o->state = REALLY_INACTIVE;
+ if (telnet->opt_states[o->index] == REQUESTED ||
+ telnet->opt_states[o->index] == ACTIVE)
+ send_opt(telnet, o->nsend, o->option);
+ telnet->opt_states[o->index] = REALLY_INACTIVE;
}
/*
* Generate side effects of enabling or disabling an option.
*/
-static void option_side_effects(struct Opt *o, int enabled)
+static void option_side_effects(Telnet telnet, const struct Opt *o, int enabled)
{
if (o->option == TELOPT_ECHO && o->send == DO)
- echoing = !enabled;
+ telnet->echoing = !enabled;
else if (o->option == TELOPT_SGA && o->send == DO)
- editing = !enabled;
+ telnet->editing = !enabled;
ldisc_send(NULL, 0, 0); /* cause ldisc to notice the change */
/* Ensure we get the minimum options */
- if (!activated) {
- if (o_echo.state == INACTIVE) {
- o_echo.state = REQUESTED;
- send_opt(o_echo.send, o_echo.option);
+ if (!telnet->activated) {
+ if (telnet->opt_states[o_echo.index] == INACTIVE) {
+ telnet->opt_states[o_echo.index] = REQUESTED;
+ send_opt(telnet, o_echo.send, o_echo.option);
}
- if (o_we_sga.state == INACTIVE) {
- o_we_sga.state = REQUESTED;
- send_opt(o_we_sga.send, o_we_sga.option);
+ if (telnet->opt_states[o_we_sga.index] == INACTIVE) {
+ telnet->opt_states[o_we_sga.index] = REQUESTED;
+ send_opt(telnet, o_we_sga.send, o_we_sga.option);
}
- if (o_they_sga.state == INACTIVE) {
- o_they_sga.state = REQUESTED;
- send_opt(o_they_sga.send, o_they_sga.option);
+ if (telnet->opt_states[o_they_sga.index] == INACTIVE) {
+ telnet->opt_states[o_they_sga.index] = REQUESTED;
+ send_opt(telnet, o_they_sga.send, o_they_sga.option);
}
- activated = TRUE;
+ telnet->activated = TRUE;
}
}
-static void activate_option(struct Opt *o)
+static void activate_option(Telnet telnet, const struct Opt *o)
{
if (o->send == WILL && o->option == TELOPT_NAWS)
- telnet_size(telnet_term_width, telnet_term_height);
+ telnet_size(telnet, telnet->term_width, telnet->term_height);
if (o->send == WILL &&
(o->option == TELOPT_NEW_ENVIRON ||
o->option == TELOPT_OLD_ENVIRON)) {
* We may only have one kind of ENVIRON going at a time.
* This is a hack, but who cares.
*/
- deactivate_option(o->option ==
+ deactivate_option(telnet, o->option ==
TELOPT_NEW_ENVIRON ? &o_oenv : &o_nenv);
}
- option_side_effects(o, 1);
+ option_side_effects(telnet, o, 1);
}
-static void refused_option(struct Opt *o)
+static void refused_option(Telnet telnet, const struct Opt *o)
{
if (o->send == WILL && o->option == TELOPT_NEW_ENVIRON &&
- o_oenv.state == INACTIVE) {
- send_opt(WILL, TELOPT_OLD_ENVIRON);
- o_oenv.state = REQUESTED;
+ telnet->opt_states[o_oenv.index] == INACTIVE) {
+ send_opt(telnet, WILL, TELOPT_OLD_ENVIRON);
+ telnet->opt_states[o_oenv.index] = REQUESTED;
}
- option_side_effects(o, 0);
+ option_side_effects(telnet, o, 0);
}
-static void proc_rec_opt(int cmd, int option)
+static void proc_rec_opt(Telnet telnet, int cmd, int option)
{
- struct Opt **o;
+ const struct Opt *const *o;
log_option("server", cmd, option);
for (o = opts; *o; o++) {
if ((*o)->option == option && (*o)->ack == cmd) {
- switch ((*o)->state) {
+ switch (telnet->opt_states[(*o)->index]) {
case REQUESTED:
- (*o)->state = ACTIVE;
- activate_option(*o);
+ telnet->opt_states[(*o)->index] = ACTIVE;
+ activate_option(telnet, *o);
break;
case ACTIVE:
break;
case INACTIVE:
- (*o)->state = ACTIVE;
- send_opt((*o)->send, option);
- activate_option(*o);
+ telnet->opt_states[(*o)->index] = ACTIVE;
+ send_opt(telnet, (*o)->send, option);
+ activate_option(telnet, *o);
break;
case REALLY_INACTIVE:
- send_opt((*o)->nsend, option);
+ send_opt(telnet, (*o)->nsend, option);
break;
}
return;
} else if ((*o)->option == option && (*o)->nak == cmd) {
- switch ((*o)->state) {
+ switch (telnet->opt_states[(*o)->index]) {
case REQUESTED:
- (*o)->state = INACTIVE;
- refused_option(*o);
+ telnet->opt_states[(*o)->index] = INACTIVE;
+ refused_option(telnet, *o);
break;
case ACTIVE:
- (*o)->state = INACTIVE;
- send_opt((*o)->nsend, option);
- option_side_effects(*o, 0);
+ telnet->opt_states[(*o)->index] = INACTIVE;
+ send_opt(telnet, (*o)->nsend, option);
+ option_side_effects(telnet, *o, 0);
break;
case INACTIVE:
case REALLY_INACTIVE:
* If we reach here, the option was one we weren't prepared to
* cope with. So send a negative ack.
*/
- send_opt((cmd == WILL ? DONT : WONT), option);
+ send_opt(telnet, (cmd == WILL ? DONT : WONT), option);
}
-static void process_subneg(void)
+static void process_subneg(Telnet telnet)
{
unsigned char b[2048], *p, *q;
int var, value, n;
char *e;
- switch (sb_opt) {
+ switch (telnet->sb_opt) {
case TELOPT_TSPEED:
- if (sb_len == 1 && sb_buf[0] == TELQUAL_SEND) {
+ if (telnet->sb_len == 1 && telnet->sb_buf[0] == TELQUAL_SEND) {
char logbuf[sizeof(cfg.termspeed) + 80];
b[0] = IAC;
b[1] = SB;
n = 4 + strlen(cfg.termspeed);
b[n] = IAC;
b[n + 1] = SE;
- telnet_bufsize = sk_write(s, b, n + 2);
+ telnet->bufsize = sk_write(telnet->s, b, n + 2);
logevent("server:\tSB TSPEED SEND");
sprintf(logbuf, "client:\tSB TSPEED IS %s", cfg.termspeed);
logevent(logbuf);
logevent("server:\tSB TSPEED <something weird>");
break;
case TELOPT_TTYPE:
- if (sb_len == 1 && sb_buf[0] == TELQUAL_SEND) {
+ if (telnet->sb_len == 1 && telnet->sb_buf[0] == TELQUAL_SEND) {
char logbuf[sizeof(cfg.termtype) + 80];
b[0] = IAC;
b[1] = SB;
'a' : cfg.termtype[n]);
b[n + 4] = IAC;
b[n + 5] = SE;
- telnet_bufsize = sk_write(s, b, n + 6);
+ telnet->bufsize = sk_write(telnet->s, b, n + 6);
b[n + 4] = 0;
logevent("server:\tSB TTYPE SEND");
sprintf(logbuf, "client:\tSB TTYPE IS %s", b + 4);
break;
case TELOPT_OLD_ENVIRON:
case TELOPT_NEW_ENVIRON:
- p = sb_buf;
- q = p + sb_len;
+ p = telnet->sb_buf;
+ q = p + telnet->sb_len;
if (p < q && *p == TELQUAL_SEND) {
char logbuf[50];
p++;
- sprintf(logbuf, "server:\tSB %s SEND", telopt(sb_opt));
+ sprintf(logbuf, "server:\tSB %s SEND", telopt(telnet->sb_opt));
logevent(logbuf);
- if (sb_opt == TELOPT_OLD_ENVIRON) {
+ if (telnet->sb_opt == TELOPT_OLD_ENVIRON) {
if (cfg.rfc_environ) {
value = RFC_VALUE;
var = RFC_VAR;
}
b[0] = IAC;
b[1] = SB;
- b[2] = sb_opt;
+ b[2] = telnet->sb_opt;
b[3] = TELQUAL_IS;
n = 4;
e = cfg.environmt;
}
b[n++] = IAC;
b[n++] = SE;
- telnet_bufsize = sk_write(s, b, n);
- sprintf(logbuf, "client:\tSB %s IS %s", telopt(sb_opt),
+ telnet->bufsize = sk_write(telnet->s, b, n);
+ sprintf(logbuf, "client:\tSB %s IS %s", telopt(telnet->sb_opt),
n == 6 ? "<nothing>" : "<stuff>");
logevent(logbuf);
}
}
}
-static enum {
- TOP_LEVEL, SEENIAC, SEENWILL, SEENWONT, SEENDO, SEENDONT,
- SEENSB, SUBNEGOT, SUBNEG_IAC, SEENCR
-} telnet_state = TOP_LEVEL;
-
-static void do_telnet_read(char *buf, int len)
+static void do_telnet_read(Telnet telnet, char *buf, int len)
{
while (len--) {
int c = (unsigned char) *buf++;
- switch (telnet_state) {
+ switch (telnet->state) {
case TOP_LEVEL:
case SEENCR:
- if (c == NUL && telnet_state == SEENCR)
- telnet_state = TOP_LEVEL;
+ if (c == NUL && telnet->state == SEENCR)
+ telnet->state = TOP_LEVEL;
else if (c == IAC)
- telnet_state = SEENIAC;
+ telnet->state = SEENIAC;
else {
- if (!in_synch)
- c_write1(c);
+ if (!telnet->in_synch)
+ c_write1(telnet, c);
#if 1
/* I can't get the F***ing winsock to insert the urgent IAC
* just stop hiding on the next 0xf2 and hope for the best.
*/
else if (c == DM)
- in_synch = 0;
+ telnet->in_synch = 0;
#endif
if (c == CR)
- telnet_state = SEENCR;
+ telnet->state = SEENCR;
else
- telnet_state = TOP_LEVEL;
+ telnet->state = TOP_LEVEL;
}
break;
case SEENIAC:
if (c == DO)
- telnet_state = SEENDO;
+ telnet->state = SEENDO;
else if (c == DONT)
- telnet_state = SEENDONT;
+ telnet->state = SEENDONT;
else if (c == WILL)
- telnet_state = SEENWILL;
+ telnet->state = SEENWILL;
else if (c == WONT)
- telnet_state = SEENWONT;
+ telnet->state = SEENWONT;
else if (c == SB)
- telnet_state = SEENSB;
+ telnet->state = SEENSB;
else if (c == DM) {
- in_synch = 0;
- telnet_state = TOP_LEVEL;
+ telnet->in_synch = 0;
+ telnet->state = TOP_LEVEL;
} else {
/* ignore everything else; print it if it's IAC */
if (c == IAC) {
- c_write1(c);
+ c_write1(telnet, c);
}
- telnet_state = TOP_LEVEL;
+ telnet->state = TOP_LEVEL;
}
break;
case SEENWILL:
- proc_rec_opt(WILL, c);
- telnet_state = TOP_LEVEL;
+ proc_rec_opt(telnet, WILL, c);
+ telnet->state = TOP_LEVEL;
break;
case SEENWONT:
- proc_rec_opt(WONT, c);
- telnet_state = TOP_LEVEL;
+ proc_rec_opt(telnet, WONT, c);
+ telnet->state = TOP_LEVEL;
break;
case SEENDO:
- proc_rec_opt(DO, c);
- telnet_state = TOP_LEVEL;
+ proc_rec_opt(telnet, DO, c);
+ telnet->state = TOP_LEVEL;
break;
case SEENDONT:
- proc_rec_opt(DONT, c);
- telnet_state = TOP_LEVEL;
+ proc_rec_opt(telnet, DONT, c);
+ telnet->state = TOP_LEVEL;
break;
case SEENSB:
- sb_opt = c;
- sb_len = 0;
- telnet_state = SUBNEGOT;
+ telnet->sb_opt = c;
+ telnet->sb_len = 0;
+ telnet->state = SUBNEGOT;
break;
case SUBNEGOT:
if (c == IAC)
- telnet_state = SUBNEG_IAC;
+ telnet->state = SUBNEG_IAC;
else {
subneg_addchar:
- if (sb_len >= sb_size) {
+ if (telnet->sb_len >= telnet->sb_size) {
char *newbuf;
- sb_size += SB_DELTA;
- newbuf = (sb_buf ?
- srealloc(sb_buf, sb_size) :
- smalloc(sb_size));
+ telnet->sb_size += SB_DELTA;
+ newbuf = (telnet->sb_buf ?
+ srealloc(telnet->sb_buf, telnet->sb_size) :
+ smalloc(telnet->sb_size));
if (newbuf)
- sb_buf = newbuf;
+ telnet->sb_buf = newbuf;
else
- sb_size -= SB_DELTA;
+ telnet->sb_size -= SB_DELTA;
}
- if (sb_len < sb_size)
- sb_buf[sb_len++] = c;
- telnet_state = SUBNEGOT; /* in case we came here by goto */
+ if (telnet->sb_len < telnet->sb_size)
+ telnet->sb_buf[telnet->sb_len++] = c;
+ telnet->state = SUBNEGOT; /* in case we came here by goto */
}
break;
case SUBNEG_IAC:
if (c != SE)
goto subneg_addchar; /* yes, it's a hack, I know, but... */
else {
- process_subneg();
- telnet_state = TOP_LEVEL;
+ process_subneg(telnet);
+ telnet->state = TOP_LEVEL;
}
break;
}
static int telnet_closing(Plug plug, char *error_msg, int error_code,
int calling_back)
{
- if (s) {
- sk_close(s);
- s = NULL;
+ Telnet telnet = (Telnet) plug;
+
+ if (telnet->s) {
+ sk_close(telnet->s);
+ telnet->s = NULL;
}
if (error_msg) {
/* A socket error has occurred. */
static int telnet_receive(Plug plug, int urgent, char *data, int len)
{
+ Telnet telnet = (Telnet) plug;
if (urgent)
- in_synch = TRUE;
- do_telnet_read(data, len);
+ telnet->in_synch = TRUE;
+ do_telnet_read(telnet, data, len);
return 1;
}
static void telnet_sent(Plug plug, int bufsize)
{
- telnet_bufsize = bufsize;
+ Telnet telnet = (Telnet) plug;
+ telnet->bufsize = bufsize;
}
/*
* Also places the canonical host name into `realhost'. It must be
* freed by the caller.
*/
-static char *telnet_init(void *frontend_handle,
+static char *telnet_init(void *frontend_handle, void **backend_handle,
char *host, int port, char **realhost, int nodelay)
{
- static struct plug_function_table fn_table = {
+ static const struct plug_function_table fn_table = {
telnet_closing,
telnet_receive,
telnet_sent
- }, *fn_table_ptr = &fn_table;
-
+ };
SockAddr addr;
char *err;
-
- frontend = frontend_handle;
- telnet_term_width = cfg.width;
- telnet_term_height = cfg.height;
+ Telnet telnet;
+
+ telnet = smalloc(sizeof(*telnet));
+ telnet->fn = &fn_table;
+ telnet->s = NULL;
+ telnet->echoing = TRUE;
+ telnet->editing = TRUE;
+ telnet->activated = FALSE;
+ telnet->sb_buf = NULL;
+ telnet->sb_size = 0;
+ telnet->frontend = frontend_handle;
+ telnet->term_width = cfg.width;
+ telnet->term_height = cfg.height;
+ telnet->state = TOP_LEVEL;
+ *backend_handle = telnet;
/*
* Try to find host.
sprintf(buf, "Connecting to %.100s port %d", addrbuf, port);
logevent(buf);
}
- s = new_connection(addr, *realhost, port, 0, 1, nodelay, &fn_table_ptr);
- if ((err = sk_socket_error(s)))
+ telnet->s = new_connection(addr, *realhost, port, 0, 1,
+ nodelay, (Plug) telnet);
+ if ((err = sk_socket_error(telnet->s)))
return err;
sk_addr_free(addr);
* Initialise option states.
*/
if (cfg.passive_telnet) {
- struct Opt **o;
+ const struct Opt *const *o;
for (o = opts; *o; o++)
- if ((*o)->state == REQUESTED)
- (*o)->state = INACTIVE;
+ telnet->opt_states[(*o)->index] = INACTIVE;
} else {
- struct Opt **o;
+ const struct Opt *const *o;
- for (o = opts; *o; o++)
- if ((*o)->state == REQUESTED)
- send_opt((*o)->send, (*o)->option);
- activated = TRUE;
+ for (o = opts; *o; o++) {
+ telnet->opt_states[(*o)->index] = (*o)->initial_state;
+ if (telnet->opt_states[(*o)->index] == REQUESTED)
+ send_opt(telnet, (*o)->send, (*o)->option);
+ }
+ telnet->activated = TRUE;
}
/*
* Set up SYNCH state.
*/
- in_synch = FALSE;
+ telnet->in_synch = FALSE;
return NULL;
}
/*
* Called to send data down the Telnet connection.
*/
-static int telnet_send(char *buf, int len)
+static int telnet_send(void *handle, char *buf, int len)
{
+ Telnet telnet = (Telnet) handle;
char *p;
static unsigned char iac[2] = { IAC, IAC };
static unsigned char cr[2] = { CR, NUL };
static unsigned char nl[2] = { CR, LF };
#endif
- if (s == NULL)
+ if (telnet->s == NULL)
return 0;
p = buf;
while (iswritable((unsigned char) *p) && p < buf + len)
p++;
- telnet_bufsize = sk_write(s, q, p - q);
+ telnet->bufsize = sk_write(telnet->s, q, p - q);
while (p < buf + len && !iswritable((unsigned char) *p)) {
- telnet_bufsize =
- sk_write(s, (unsigned char) *p == IAC ? iac : cr, 2);
+ telnet->bufsize =
+ sk_write(telnet->s, (unsigned char) *p == IAC ? iac : cr, 2);
p++;
}
}
- return telnet_bufsize;
+ return telnet->bufsize;
}
/*
* Called to query the current socket sendability status.
*/
-static int telnet_sendbuffer(void)
+static int telnet_sendbuffer(void *handle)
{
- return telnet_bufsize;
+ Telnet telnet = (Telnet) handle;
+ return telnet->bufsize;
}
/*
* Called to set the size of the window from Telnet's POV.
*/
-static void telnet_size(int width, int height)
+static void telnet_size(void *handle, int width, int height)
{
+ Telnet telnet = (Telnet) handle;
unsigned char b[16];
char logbuf[50];
- telnet_term_width = width;
- telnet_term_height = height;
+ telnet->term_width = width;
+ telnet->term_height = height;
- if (s == NULL || o_naws.state != ACTIVE)
+ if (telnet->s == NULL || telnet->opt_states[o_naws.index] != ACTIVE)
return;
b[0] = IAC;
b[1] = SB;
b[2] = TELOPT_NAWS;
- b[3] = telnet_term_width >> 8;
- b[4] = telnet_term_width & 0xFF;
- b[5] = telnet_term_height >> 8;
- b[6] = telnet_term_height & 0xFF;
+ b[3] = telnet->term_width >> 8;
+ b[4] = telnet->term_width & 0xFF;
+ b[5] = telnet->term_height >> 8;
+ b[6] = telnet->term_height & 0xFF;
b[7] = IAC;
b[8] = SE;
- telnet_bufsize = sk_write(s, b, 9);
+ telnet->bufsize = sk_write(telnet->s, b, 9);
sprintf(logbuf, "client:\tSB NAWS %d,%d",
((unsigned char) b[3] << 8) + (unsigned char) b[4],
((unsigned char) b[5] << 8) + (unsigned char) b[6]);
/*
* Send Telnet special codes.
*/
-static void telnet_special(Telnet_Special code)
+static void telnet_special(void *handle, Telnet_Special code)
{
+ Telnet telnet = (Telnet) handle;
unsigned char b[2];
- if (s == NULL)
+ if (telnet->s == NULL)
return;
b[0] = IAC;
switch (code) {
case TS_AYT:
b[1] = AYT;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_BRK:
b[1] = BREAK;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_EC:
b[1] = EC;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_EL:
b[1] = EL;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_GA:
b[1] = GA;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_NOP:
b[1] = NOP;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_ABORT:
b[1] = ABORT;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_AO:
b[1] = AO;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_IP:
b[1] = IP;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_SUSP:
b[1] = SUSP;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_EOR:
b[1] = EOR;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_EOF:
b[1] = xEOF;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
break;
case TS_EOL:
- telnet_bufsize = sk_write(s, "\r\n", 2);
+ telnet->bufsize = sk_write(telnet->s, "\r\n", 2);
break;
case TS_SYNCH:
b[1] = DM;
- telnet_bufsize = sk_write(s, b, 1);
- telnet_bufsize = sk_write_oob(s, b + 1, 1);
+ telnet->bufsize = sk_write(telnet->s, b, 1);
+ telnet->bufsize = sk_write_oob(telnet->s, b + 1, 1);
break;
case TS_RECHO:
- if (o_echo.state == INACTIVE || o_echo.state == REALLY_INACTIVE) {
- o_echo.state = REQUESTED;
- send_opt(o_echo.send, o_echo.option);
+ if (telnet->opt_states[o_echo.index] == INACTIVE ||
+ telnet->opt_states[o_echo.index] == REALLY_INACTIVE) {
+ telnet->opt_states[o_echo.index] = REQUESTED;
+ send_opt(telnet, o_echo.send, o_echo.option);
}
break;
case TS_LECHO:
- if (o_echo.state == ACTIVE) {
- o_echo.state = REQUESTED;
- send_opt(o_echo.nsend, o_echo.option);
+ if (telnet->opt_states[o_echo.index] == ACTIVE) {
+ telnet->opt_states[o_echo.index] = REQUESTED;
+ send_opt(telnet, o_echo.nsend, o_echo.option);
}
break;
case TS_PING:
- if (o_they_sga.state == ACTIVE) {
+ if (telnet->opt_states[o_they_sga.index] == ACTIVE) {
b[1] = NOP;
- telnet_bufsize = sk_write(s, b, 2);
+ telnet->bufsize = sk_write(telnet->s, b, 2);
}
break;
}
}
-static Socket telnet_socket(void)
+static Socket telnet_socket(void *handle)
{
- return s;
+ Telnet telnet = (Telnet) handle;
+ return telnet->s;
}
-static int telnet_sendok(void)
+static int telnet_sendok(void *handle)
{
+ Telnet telnet = (Telnet) handle;
return 1;
}
-static void telnet_unthrottle(int backlog)
+static void telnet_unthrottle(void *handle, int backlog)
{
- sk_set_frozen(s, backlog > TELNET_MAX_BACKLOG);
+ Telnet telnet = (Telnet) handle;
+ sk_set_frozen(telnet->s, backlog > TELNET_MAX_BACKLOG);
}
-static int telnet_ldisc(int option)
+static int telnet_ldisc(void *handle, int option)
{
+ Telnet telnet = (Telnet) handle;
if (option == LD_ECHO)
- return echoing;
+ return telnet->echoing;
if (option == LD_EDIT)
- return editing;
+ return telnet->editing;
return FALSE;
}
-static int telnet_exitcode(void)
+static int telnet_exitcode(void *handle)
{
+ Telnet telnet = (Telnet) handle;
/* Telnet doesn't transmit exit codes back to the client */
return 0;
}
projects / u / mdw / putty / blobdiff