static void
server_input_window_size(int type, u_int32_t seq, void *ctxt)
{
u_int row = packet_get_int();
u_int col = packet_get_int();
u_int xpixel = packet_get_int();
u_int ypixel = packet_get_int();
debug("Window change received.");
packet_check_eom();
if (fdin != -1)
pty_change_window_size(fdin, row, col, xpixel, ypixel);
}
void PTYPars::read_from_packet (CoreConnection* con)
{
u_int len;
int n_bytes;
#if 0 // FIXME
if (s->ttyfd != -1) {
packet_disconnect("Protocol error: you already have a pty.");
return 0;
}
#endif
const char* term2 = con-> packet_get_string(&len);
term = term2;
xfree ((void*) term2);
col = con-> packet_get_int();
row = con-> packet_get_int();
xpixel = con-> packet_get_int();
ypixel = con-> packet_get_int();
#if 0
/* Allocate a pty and open it. */
debug("Allocating pty.");
if (!PRIVSEP(pty_allocate(&s->ptyfd, &s->ttyfd, s->tty,
sizeof(s->tty)))) {
if (s->term)
xfree(s->term);
s->term = NULL;
s->ptyfd = -1;
s->ttyfd = -1;
error("session_pty_req: session %d alloc failed", s->self);
return 0;
}
debug("session_pty_req: session %d alloc %s", s->self, s->tty);
#endif
PTY::tty_parse_modes(con, &n_bytes);
#if 0
/* Set window size from the packet. */
pty_change_window_size(s->ptyfd, s->row, s->col, s->xpixel, s->ypixel);
#endif
packet_check_eom (con);
}
/* Let the process know that the window size has changed, as notified from the
* client. Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
static int sessionwinchange(struct ChanSess *chansess) {
if (chansess->master < 0) {
/* haven't got a pty yet */
return DROPBEAR_FAILURE;
}
chansess->termc = buf_getint(ses.payload);
chansess->termr = buf_getint(ses.payload);
chansess->termw = buf_getint(ses.payload);
chansess->termh = buf_getint(ses.payload);
pty_change_window_size(chansess->master, chansess->termr, chansess->termc,
chansess->termw, chansess->termh);
return DROPBEAR_FAILURE;
}
static int
server_input_window_size(int type, u_int32_t seq, struct ssh *ssh)
{
u_int row, col, xpixel, ypixel;
int r;
if ((r = sshpkt_get_u32(ssh, &row)) != 0 ||
(r = sshpkt_get_u32(ssh, &col)) != 0 ||
(r = sshpkt_get_u32(ssh, &xpixel)) != 0 ||
(r = sshpkt_get_u32(ssh, &ypixel)) != 0 ||
(r = sshpkt_get_end(ssh)))
return r;
debug("Window change received.");
if (fdin != -1)
pty_change_window_size(fdin, row, col, xpixel, ypixel);
return 0;
}
/* Set up a session pty which will be used to execute the shell or program.
* The pty is allocated now, and kept for when the shell/program executes.
* Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
static int sessionpty(struct ChanSess * chansess) {
unsigned int termlen;
unsigned char namebuf[65];
struct termios termio;
TRACE(("enter sessionpty"));
chansess->term = buf_getstring(ses.payload, &termlen);
if (termlen > MAX_TERM_LEN) {
/* TODO send disconnect ? */
TRACE(("leave sessionpty: term len too long"));
return DROPBEAR_FAILURE;
}
chansess->termc = buf_getint(ses.payload);
chansess->termr = buf_getint(ses.payload);
chansess->termw = buf_getint(ses.payload);
chansess->termh = buf_getint(ses.payload);
/* allocate the pty */
assert(chansess->master == -1); /* haven't already got one */
if (pty_allocate(&chansess->master, &chansess->slave, namebuf, 64) == 0) {
TRACE(("leave sessionpty: failed to allocate pty"));
return DROPBEAR_FAILURE;
}
chansess->tty = (char*)strdup(namebuf);
if (!chansess->tty) {
dropbear_exit("out of memory"); /* TODO disconnect */
}
pty_setowner(ses.authstate.pw, chansess->tty);
pty_change_window_size(chansess->master, chansess->termr, chansess->termc,
chansess->termw, chansess->termh);
/* Term modes */
/* We'll ignore errors and continue if we can't set modes.
* We're ignoring baud rates since they seem evil */
if (tcgetattr(chansess->master, &termio) == 0) {
unsigned char opcode;
unsigned int value;
const struct TermCode * termcode;
while (((opcode = buf_getbyte(ses.payload)) != 0x00) &&
opcode <= 159) {
/* handle types of code */
if (opcode > MAX_TERMCODE) {
continue;
}
termcode = &termcodes[(unsigned int)opcode];
value = buf_getint(ses.payload);
switch (termcode->type) {
case TERMCODE_NONE:
break;
case TERMCODE_CONTROLCHAR:
termio.c_cc[termcode->mapcode] = value;
break;
case TERMCODE_INPUT:
if (value) {
termio.c_iflag |= termcode->mapcode;
} else {
termio.c_iflag &= ~(termcode->mapcode);
}
break;
case TERMCODE_OUTPUT:
if (value) {
termio.c_oflag |= termcode->mapcode;
} else {
termio.c_oflag &= ~(termcode->mapcode);
}
break;
case TERMCODE_LOCAL:
if (value) {
termio.c_lflag |= termcode->mapcode;
} else {
termio.c_lflag &= ~(termcode->mapcode);
}
break;
case TERMCODE_CONTROL:
if (value) {
termio.c_cflag |= termcode->mapcode;
} else {
termio.c_cflag &= ~(termcode->mapcode);
}
break;
}
}
if (tcsetattr(chansess->master, TCSANOW, &termio) < 0) {
dropbear_log(LOG_INFO, "error setting terminal attributes");
}
}
TRACE(("leave sessionpty"));
return DROPBEAR_SUCCESS;
}
