static int
server_input_channel_open(int type, u_int32_t seq, struct ssh *ssh)
{
Channel *c = NULL;
char *ctype = 0;
int r;
u_int rchan, rmaxpack, rwindow;
size_t len;
if ((r = sshpkt_get_cstring(ssh, &ctype, &len)) != 0 ||
(r = sshpkt_get_u32(ssh, &rchan)) != 0 ||
(r = sshpkt_get_u32(ssh, &rwindow)) != 0 ||
(r = sshpkt_get_u32(ssh, &rmaxpack)) != 0)
goto out;
debug("server_input_channel_open: ctype %s rchan %d win %d max %d",
ctype, rchan, rwindow, rmaxpack);
if (strcmp(ctype, "session") == 0) {
c = server_request_session(ssh);
} else if (strcmp(ctype, "direct-tcpip") == 0) {
c = server_request_direct_tcpip(ssh);
} else if (strcmp(ctype, "*****@*****.**") == 0) {
c = server_request_direct_streamlocal(ssh);
} else if (strcmp(ctype, "*****@*****.**") == 0) {
c = server_request_tun(ssh);
}
if (c != NULL) {
debug("server_input_channel_open: confirm %s", ctype);
c->remote_id = rchan;
c->remote_window = rwindow;
c->remote_maxpacket = rmaxpack;
if (c->type != SSH_CHANNEL_CONNECTING) {
if ((r = sshpkt_start(ssh,
SSH2_MSG_CHANNEL_OPEN_CONFIRMATION)) != 0 ||
(r = sshpkt_put_u32(ssh, c->remote_id)) != 0 ||
(r = sshpkt_put_u32(ssh, c->self)) != 0 ||
(r = sshpkt_put_u32(ssh, c->local_window)) != 0 ||
(r = sshpkt_put_u32(ssh, c->local_maxpacket)) != 0||
(r = sshpkt_send(ssh)) != 0)
goto out;
}
} else {
debug("server_input_channel_open: failure %s", ctype);
if ((r = sshpkt_start(ssh, SSH2_MSG_CHANNEL_OPEN_FAILURE)) != 0 ||
(r = sshpkt_put_u32(ssh, rchan)) != 0 ||
(r = sshpkt_put_u32(ssh,
SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED)) != 0 ||
(!(ssh->compat & SSH_BUG_OPENFAILURE) &&
(r = sshpkt_put_cstring(ssh, "open failed")) != 0) ||
(!(ssh->compat & SSH_BUG_OPENFAILURE) &&
(r = sshpkt_put_cstring(ssh, "")) != 0) ||
(r = sshpkt_send(ssh)) != 0)
goto out;
}
r = 0;
out:
free(ctype);
return r;
}
static int
server_input_channel_open(int type, u_int32_t seq, void *ctxt)
{
Channel *c = NULL;
char *ctype;
int rchan;
u_int rmaxpack, rwindow, len;
ctype = packet_get_string(&len);
rchan = packet_get_int();
rwindow = packet_get_int();
rmaxpack = packet_get_int();
debug("server_input_channel_open: ctype %s rchan %d win %d max %d",
ctype, rchan, rwindow, rmaxpack);
if (strcmp(ctype, "session") == 0) {
c = server_request_session();
} else if (strcmp(ctype, "direct-tcpip") == 0) {
c = server_request_direct_tcpip();
} else if (strcmp(ctype, "*****@*****.**") == 0) {
c = server_request_direct_streamlocal();
} else if (strcmp(ctype, "*****@*****.**") == 0) {
c = server_request_tun();
}
if (c != NULL) {
debug("server_input_channel_open: confirm %s", ctype);
c->remote_id = rchan;
c->remote_window = rwindow;
c->remote_maxpacket = rmaxpack;
if (c->type != SSH_CHANNEL_CONNECTING) {
packet_start(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION);
packet_put_int(c->remote_id);
packet_put_int(c->self);
packet_put_int(c->local_window);
packet_put_int(c->local_maxpacket);
packet_send();
}
} else {
debug("server_input_channel_open: failure %s", ctype);
packet_start(SSH2_MSG_CHANNEL_OPEN_FAILURE);
packet_put_int(rchan);
packet_put_int(SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED);
if (!(datafellows & SSH_BUG_OPENFAILURE)) {
packet_put_cstring("open failed");
packet_put_cstring("");
}
packet_send();
}
free(ctype);
return 0;
}