/* send a NEW-ENVIRON value */
void telnet_newenviron_value(telnet_t *telnet, unsigned char type,
const char *string) {
telnet_send(telnet, (const char*)&type, 1);
if (string != 0) {
telnet_send(telnet, string, strlen(string));
}
}
/* send NAWS update */
static void send_naws (void) {
unsigned short w = htons(COLS), h = htons(LINES);
/* send NAWS if enabled */
if (terminal.flags & TERM_FLAG_NAWS) {
telnet_begin_sb(telnet, TELOPT_NAWS);
telnet_send(telnet, (char*)&w, 2);
telnet_send(telnet, (char*)&h, 2);
telnet_finish_sb(telnet);
}
}
/* send formatted data through telnet_send */
int telnet_raw_vprintf(telnet_t *telnet, const char *fmt, va_list va) {
char buffer[1024];
char *output = buffer;
int rs;
/* format; allocate more space if necessary */
va_list va2;
va_copy(va2, va);
rs = vsnprintf(buffer, sizeof(buffer), fmt, va);
if (rs >= sizeof(buffer)) {
output = (char*)malloc(rs + 1);
if (output == 0) {
_error(telnet, __LINE__, __func__, TELNET_ENOMEM, 0,
"malloc() failed: %s", strerror(errno));
return -1;
}
rs = vsnprintf(output, rs + 1, fmt, va2);
}
va_end(va2);
va_end(va);
/* send out the formatted data */
telnet_send(telnet, output, rs);
/* release allocated memory, if any */
if (output != buffer) {
free(output);
}
return rs;
}
/* send complete subnegotiation */
void telnet_subnegotiation(telnet_t *telnet, unsigned char telopt,
const char *buffer, size_t size) {
unsigned char bytes[5];
bytes[0] = TELNET_IAC;
bytes[1] = TELNET_SB;
bytes[2] = telopt;
bytes[3] = TELNET_IAC;
bytes[4] = TELNET_SE;
_sendu(telnet, bytes, 3);
telnet_send(telnet, buffer, size);
_sendu(telnet, bytes + 3, 2);
#if defined(HAVE_ZLIB)
/* if we're a proxy and we just sent the COMPRESS2 marker, we must
* make sure all further data is compressed if not already.
*/
if (telnet->flags & TELNET_FLAG_PROXY &&
telopt == TELNET_TELOPT_COMPRESS2) {
telnet_event_t ev;
if (_init_zlib(telnet, 1, 1) != TELNET_EOK)
return;
/* notify app that compression was enabled */
ev.type = TELNET_EV_COMPRESS;
ev.compress.state = 1;
telnet->eh(telnet, &ev, telnet->ud);
}
#endif /* defined(HAVE_ZLIB) */
}
/**
* A callback function to be invoked when a line has been entered on the telnet client.
* Here we want to pass that line to the JS parser for processing.
*/
static void telnetLineCB(char *line) {
jsiConsolePrintf("LineCB: %s", line);
// Pass the line to the interactive module ...
jshPushIOCharEvents(jsiGetConsoleDevice(), line, strlen(line));
//jspEvaluate(line);
//jsiDumpState();
telnet_send("JS> ");
} // End of lineCB
/*---------------------------------------------------------------------------*/
static void
send_line(struct telnet_state *s, char *data, int len)
{
if(!sending) {
strncpy(outputline, data, MIN(sizeof(outputline), len));
telnet_send(s, data, len);
sending = 1;
} else {
shell_output_str(&tcpsend_command, "Cannot send data, still sending previous data", "");
}
}
static void _input(char *buffer, int size) {
static char crlf[] = { '\r', '\n' };
int i;
for (i = 0; i != size; ++i) {
/* if we got a CR or LF, replace with CRLF
* NOTE that usually you'd get a CR in UNIX, but in raw
* mode we get LF instead (not sure why)
*/
if (buffer[i] == '\r' || buffer[i] == '\n') {
if (do_echo)
printf("\r\n");
telnet_send(telnet, crlf, 2);
} else {
if (do_echo)
putchar(buffer[i]);
telnet_send(telnet, buffer + i, 1);
}
}
fflush(stdout);
}
void TelnetConnection::writeMessage() {
std::string *msg;
if (mSendQueue.pop(msg)) {
{boost::lock_guard<boost::mutex> guard(mTelnetMutex);
telnet_send(mTelnet, msg->c_str(), msg->size());
}
delete msg;
}
else {
mCurrentlySending.clear();
}
}
/* Telnet server loop, used to send buffered output in the RB */
static void telnet_run(void)
{
while (true) {
k_sem_take(&send_lock, K_FOREVER);
if (!telnet_send()) {
telnet_end_client_connection();
}
telnet_reply_command();
}
}
static void _draw(int width, int height, telnet_t *telnet)
{
int i;
int tl,hl,tr,vl,bl,br;
int buffer_size;
char *buffer;
tl = 218;
hl = 196;
tr = 191;
vl = 179;
bl = 192;
br = 217;
buffer_size = width*height + 1;
buffer = (char *)malloc(buffer_size);
memset(buffer, 0, buffer_size);
buffer = "┌─";
/* for(i=0; i < buffer_size; i++)
{
if(i==0)
{
buffer[i] = 14;
break;
}
else if(i==1)
{
buffer[i] = tl;
break;
}
else if(i<width)
{
buffer[i] = hl;
break;
}
else if(i==width)
{
buffer[i] = tr;
break;
}
}*/
telnet_send(telnet, buffer, sizeof(buffer));
free(buffer);
return;
}
/* send complete subnegotiation */
void telnet_subnegotiation(telnet_t *telnet, unsigned char telopt,
const char *buffer, size_t size)
{
unsigned char bytes[5];
bytes[0] = TELNET_IAC;
bytes[1] = TELNET_SB;
bytes[2] = telopt;
bytes[3] = TELNET_IAC;
bytes[4] = TELNET_SE;
_sendu(telnet, bytes, 3);
telnet_send(telnet, buffer, size);
_sendu(telnet, bytes + 3, 2);
}
/* send formatted data through telnet_send */
int telnet_raw_printf(telnet_t *telnet, const char *fmt, ...) {
char buffer[4096];
va_list va;
int rs;
/* format */
va_start(va, fmt);
rs = vsnprintf(buffer, sizeof(buffer), fmt, va);
va_end(va);
/* send */
telnet_send(telnet, buffer, rs);
return rs;
}
void *telnet_write_loop(void *args) {
connection_t *con = ((struct loop_args *)args)->con;
char *out_buf = (char *)calloc(1, MAX_LINE), c;
size_t i;
while (1) {
i = 0;
printf("> ");
while ((c = getchar()) != '\n') {
out_buf[i++] = c;
}
out_buf[i] = '\0';
if (!strcmp(out_buf, "exit")) break;
telnet_send(con, out_buf);
}
printf("Connection closed by client\n");
free(out_buf);
return NULL;
}
/* send a ZMP argument */
void telnet_zmp_arg(telnet_t *telnet, const char* arg) {
telnet_send(telnet, arg, strlen(arg) + 1);
}
/* begin NEW-ENVIRON subnegotation */
void telnet_begin_newenviron(telnet_t *telnet, unsigned char cmd) {
telnet_begin_sb(telnet, TELNET_TELOPT_NEW_ENVIRON);
telnet_send(telnet, (const char *)&cmd, 1);
}
/*-----------------------------------------------------------------------------------*/
PROCESS_THREAD(simpletelnet_process, ev, data)
{
struct ctk_widget *w;
int sendlen;
PROCESS_BEGIN();
ctk_window_new(&telnetwindow, TELNET_WINDOW_WIDTH, TELNET_WINDOW_HEIGHT, "Simple telnet");
strcpy(telnetport, "23");
CTK_WIDGET_ADD(&telnetwindow, &telnethostlabel);
CTK_WIDGET_ADD(&telnetwindow, &telnetportlabel);
CTK_WIDGET_ADD(&telnetwindow, &telnethosttextentry);
CTK_WIDGET_ADD(&telnetwindow, &telnetporttextentry);
CTK_WIDGET_ADD(&telnetwindow, &telnetconnectbutton);
CTK_WIDGET_ADD(&telnetwindow, &telnetdisconnectbutton);
CTK_WIDGET_ADD(&telnetwindow, &telnetlinetextentry);
CTK_WIDGET_ADD(&telnetwindow, &telnetsendbutton);
CTK_WIDGET_ADD(&telnetwindow, &telnetsep1);
CTK_WIDGET_ADD(&telnetwindow, &telnettextarea);
CTK_WIDGET_ADD(&telnetwindow, &telnetsep2);
CTK_WIDGET_ADD(&telnetwindow, &telnetstatus);
CTK_WIDGET_FOCUS(&telnetwindow, &telnethosttextentry);
ctk_window_open(&telnetwindow);
while(1) {
PROCESS_WAIT_EVENT();
if(ev == ctk_signal_button_activate) {
w = (struct ctk_widget *)data;
if(w == (struct ctk_widget *)&telnetsendbutton) {
strcpy(sendline, telnetline);
sendlen = (int)strlen(sendline);
petsciiconv_toascii(sendline, sendlen);
sendline[sendlen++] = ISO_CR;
sendline[sendlen++] = ISO_NL;
if(telnet_send(&ts_appstate, sendline, sendlen)) {
/* Could not send. */
ctk_label_set_text(&telnetstatus, "Could not send");
ctk_window_redraw(&telnetwindow);
/* } else {*/
/* Could send */
}
} else if(w == (struct ctk_widget *)&telnetdisconnectbutton) {
telnet_close(&ts_appstate);
show("Closing...");
} else if(w == (struct ctk_widget *)&telnetconnectbutton) {
connect();
ctk_window_redraw(&telnetwindow);
}
#if UIP_UDP
} else if(ev == resolv_event_found) {
if(strcmp(data, telnethost) == 0) {
if(resolv_lookup(telnethost) != NULL) {
connect();
} else {
show("Host not found");
}
}
#endif /* UIP_UDP */
} else if(
#if CTK_CONF_WINDOWCLOSE
ev == ctk_signal_window_close ||
#endif /* CTK_CONF_WINDOWCLOSE */
ev == PROCESS_EVENT_EXIT) {
process_exit(&simpletelnet_process);
ctk_window_close(&telnetwindow);
LOADER_UNLOAD();
} else if(ev == tcpip_event) {
telnet_app(data);
}
}
PROCESS_END();
}
