+static void
+process_cmdline(void)
+{
+ void (*handler)(int);
+ char *s, *cmd;
+ u_short fwd_port, fwd_host_port;
+ char buf[1024], sfwd_port[6], sfwd_host_port[6];
+ int delete = 0;
+ int local = 0;
+
+ leave_raw_mode();
+ handler = signal(SIGINT, SIG_IGN);
+ cmd = s = read_passphrase("\r\nssh> ", RP_ECHO);
+ if (s == NULL)
+ goto out;
+ while (*s && isspace(*s))
+ s++;
+ if (*s == '-')
+ s++; /* Skip cmdline '-', if any */
+ if (*s == '\0')
+ goto out;
+
+ if (*s == 'h' || *s == 'H' || *s == '?') {
+ logit("Commands:");
+ logit(" -Lport:host:hostport Request local forward");
+ logit(" -Rport:host:hostport Request remote forward");
+ logit(" -KRhostport Cancel remote forward");
+ goto out;
+ }
+
+ if (*s == 'K') {
+ delete = 1;
+ s++;
+ }
+ if (*s != 'L' && *s != 'R') {
+ logit("Invalid command.");
+ goto out;
+ }
+ if (*s == 'L')
+ local = 1;
+ if (local && delete) {
+ logit("Not supported.");
+ goto out;
+ }
+ if ((!local || delete) && !compat20) {
+ logit("Not supported for SSH protocol version 1.");
+ goto out;
+ }
+
+ s++;
+ while (*s && isspace(*s))
+ s++;
+
+ if (delete) {
+ if (sscanf(s, "%5[0-9]", sfwd_host_port) != 1) {
+ logit("Bad forwarding specification.");
+ goto out;
+ }
+ if ((fwd_host_port = a2port(sfwd_host_port)) == 0) {
+ logit("Bad forwarding port(s).");
+ goto out;
+ }
+ channel_request_rforward_cancel(fwd_host_port);
+ } else {
+ if (sscanf(s, "%5[0-9]:%255[^:]:%5[0-9]",
+ sfwd_port, buf, sfwd_host_port) != 3 &&
+ sscanf(s, "%5[0-9]/%255[^/]/%5[0-9]",
+ sfwd_port, buf, sfwd_host_port) != 3) {
+ logit("Bad forwarding specification.");
+ goto out;
+ }
+ if ((fwd_port = a2port(sfwd_port)) == 0 ||
+ (fwd_host_port = a2port(sfwd_host_port)) == 0) {
+ logit("Bad forwarding port(s).");
+ goto out;
+ }
+ if (local) {
+ if (channel_setup_local_fwd_listener(fwd_port, buf,
+ fwd_host_port, options.gateway_ports) < 0) {
+ logit("Port forwarding failed.");
+ goto out;
+ }
+ } else
+ channel_request_remote_forwarding(fwd_port, buf,
+ fwd_host_port);
+ logit("Forwarding port.");
+ }
+
+out:
+ signal(SIGINT, handler);
+ enter_raw_mode();
+ if (cmd)
+ xfree(cmd);
+}
+