LeOS-Genesis/external/badvpn/ncd/examples/router/network_control_server.ncdi

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include_guard "network_control_server"
template network_control_server {
alias("_arg0") socket_path;
alias("_arg1") template_list_port_forwardings;
alias("_arg2") template_add_port_forwarding;
alias("_arg3") template_remove_port_forwarding;
# Start request server.
sys.request_server({"unix", socket_path}, "network_control_server__request_handler", {});
}
template network_control_server__request_handler {
alias("_caller") server;
value(_request.data) data;
try("network_control_server__try", {});
_request->reply({"error", "Bad request."});
_request->finish();
}
template network_control_server__try {
alias("_caller._request") request;
alias("_caller.server") server;
alias("_caller.data") data;
val_equal(data.type, "list") a1;
_try->assert(a1);
num_greater_equal(data.length, "1") a2;
_try->assert(a2);
data->get("0") request_cmd;
val_equal(request_cmd, "list-port-forwardings") is_list_port_forwardings;
val_equal(request_cmd, "add-port-forwarding") is_add_port_forwarding;
val_equal(request_cmd, "remove-port-forwarding") is_remove_port_forwarding;
or(is_add_port_forwarding, is_remove_port_forwarding) is_add_remove_port_forwarding;
If (is_list_port_forwardings) {
num_equal(data.length, "1") a3;
_try->assert(a3);
call_with_caller_target(server.template_list_port_forwardings, {}, "server._caller") call;
request->reply({"ok", call.port_forwardings});
}
Elif (is_add_remove_port_forwarding) {
num_equal(data.length, "5") a4;
_try->assert(a4);
data->get("1") req_protocol;
data->get("2") req_port_start;
data->get("3") req_port_end;
data->get("4") req_dest_addr;
val_equal(req_protocol, "tcp") is_tcp;
val_equal(req_protocol, "udp") is_udp;
or(is_tcp, is_udp) a5;
_try->assert(a5);
parse_number(req_port_start) port_start;
_try->assert(port_start.succeeded);
parse_number(req_port_end) port_end;
_try->assert(port_end.succeeded);
num_lesser_equal(port_start, port_end) a6;
_try->assert(a6);
parse_ipv4_addr(req_dest_addr) dest_addr;
_try->assert(dest_addr.succeeded);
If (is_add_port_forwarding) {
call_with_caller_target(server.template_add_port_forwarding, {req_protocol, port_start, port_end, dest_addr}, "server._caller") call;
If (call.succeeded) {
request->reply({"ok", "Port forwarding added."});
} Else {
request->reply({"error", call.error_text});
};
} Else {
call_with_caller_target(server.template_remove_port_forwarding, {req_protocol, port_start, port_end, dest_addr}, "server._caller") call;
If (call.succeeded) {
request->reply({"ok", "Port forwarding removed."});
} Else {
request->reply({"error", call.error_text});
};
};
}
Else {
_try->assert("false");
};
request->finish();
}