static Channel *
server_request_session(void)
{
Channel *c;
debug("input_session_request");
packet_check_eom();
if (no_more_sessions) {
packet_disconnect("Possible attack: attempt to open a session "
"after additional sessions disabled");
}
/*
* A server session has no fd to read or write until a
* CHANNEL_REQUEST for a shell is made, so we set the type to
* SSH_CHANNEL_LARVAL. Additionally, a callback for handling all
* CHANNEL_REQUEST messages is registered.
*/
c = channel_new("session", SSH_CHANNEL_LARVAL,
-1, -1, -1, /*window size*/0, CHAN_SES_PACKET_DEFAULT,
0, "server-session", 1);
if (session_open(the_authctxt, c->self) != 1) {
debug("session open failed, free channel %d", c->self);
channel_free(c);
return NULL;
}
channel_register_cleanup(c->self, session_close_by_channel, 0);
return c;
}
static Channel *
server_request_session(struct ssh *ssh)
{
Channel *c;
int r;
debug("input_session_request");
if ((r = sshpkt_get_end(ssh)) != 0)
fatal("%s: %s", __func__, ssh_err(r));
if (no_more_sessions) {
ssh_packet_disconnect(ssh,
"Possible attack: attempt to open a session "
"after additional sessions disabled");
}
/*
* A server session has no fd to read or write until a
* CHANNEL_REQUEST for a shell is made, so we set the type to
* SSH_CHANNEL_LARVAL. Additionally, a callback for handling all
* CHANNEL_REQUEST messages is registered.
*/
c = channel_new(ssh, "session", SSH_CHANNEL_LARVAL,
-1, -1, -1, /*window size*/0, CHAN_SES_PACKET_DEFAULT,
0, "server-session", 1);
if (session_open(ssh, c->self) != 1) {
debug("session open failed, free channel %d", c->self);
channel_free(c);
return NULL;
}
channel_register_cleanup(c->self, session_close_by_channel, 0);
return c;
}
static int
client_setup_stdio_fwd(const char *host_to_connect, u_short port_to_connect)
{
Channel *c;
int in, out;
debug3("client_setup_stdio_fwd %s:%d", host_to_connect,
port_to_connect);
in = dup(STDIN_FILENO);
out = dup(STDOUT_FILENO);
if (in < 0 || out < 0)
fatal("channel_connect_stdio_fwd: dup() in/out failed");
if ((c = channel_connect_stdio_fwd(host_to_connect, port_to_connect,
in, out)) == NULL)
return 0;
channel_register_cleanup(c->self, client_cleanup_stdio_fwd, 0);
return 1;
}
static void
ssh_init_stdio_forwarding(void)
{
Channel *c;
int in, out;
if (stdio_forward_host == NULL)
return;
if (!compat20)
fatal("stdio forwarding require Protocol 2");
debug3("%s: %s:%d", __func__, stdio_forward_host, stdio_forward_port);
if ((in = dup(STDIN_FILENO)) < 0 ||
(out = dup(STDOUT_FILENO)) < 0)
fatal("channel_connect_stdio_fwd: dup() in/out failed");
if ((c = channel_connect_stdio_fwd(stdio_forward_host,
stdio_forward_port, in, out)) == NULL)
fatal("%s: channel_connect_stdio_fwd failed", __func__);
channel_register_cleanup(c->self, client_cleanup_stdio_fwd, 0);
}
static Channel *
server_request_session(char *ctype)
{
Channel *c;
debug("input_session_request");
packet_check_eom();
/*
* A server session has no fd to read or write until a
* CHANNEL_REQUEST for a shell is made, so we set the type to
* SSH_CHANNEL_LARVAL. Additionally, a callback for handling all
* CHANNEL_REQUEST messages is registered.
*/
c = channel_new(ctype, SSH_CHANNEL_LARVAL,
-1, -1, -1, /*window size*/0, CHAN_SES_PACKET_DEFAULT,
0, "server-session", 1);
if (session_open(xxx_authctxt, c->self) != 1) {
debug("session open failed, free channel %d", c->self);
channel_free(c);
return NULL;
}
channel_register_cleanup(c->self, session_close_by_channel);
return c;
}
