diff --git a/core/io/net_socket.h b/core/io/net_socket.h index bc094776933..a632ad2ea79 100644 --- a/core/io/net_socket.h +++ b/core/io/net_socket.h @@ -67,6 +67,7 @@ public: virtual bool is_open() const = 0; virtual int get_available_bytes() const = 0; + virtual Error get_socket_address(IP_Address *r_ip, uint16_t *r_port) const = 0; virtual Error set_broadcasting_enabled(bool p_enabled) = 0; // Returns OK if the socket option has been set successfully. virtual void set_blocking_enabled(bool p_enabled) = 0; diff --git a/core/io/packet_peer_udp.cpp b/core/io/packet_peer_udp.cpp index 3f46f2706e3..9ff895657f9 100644 --- a/core/io/packet_peer_udp.cpp +++ b/core/io/packet_peer_udp.cpp @@ -163,6 +163,7 @@ Error PacketPeerUDP::listen(int p_port, const IP_Address &p_bind_address, int p_ ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE); ERR_FAIL_COND_V(_sock->is_open(), ERR_ALREADY_IN_USE); ERR_FAIL_COND_V(!p_bind_address.is_valid() && !p_bind_address.is_wildcard(), ERR_INVALID_PARAMETER); + ERR_FAIL_COND_V_MSG(p_port < 0 || p_port > 65535, ERR_INVALID_PARAMETER, "The local port number must be between 0 and 65535 (inclusive)."); Error err; IP::Type ip_type = IP::TYPE_ANY; @@ -210,6 +211,7 @@ Error PacketPeerUDP::connect_to_host(const IP_Address &p_host, int p_port) { ERR_FAIL_COND_V(udp_server, ERR_LOCKED); ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE); ERR_FAIL_COND_V(!p_host.is_valid(), ERR_INVALID_PARAMETER); + ERR_FAIL_COND_V_MSG(p_port < 1 || p_port > 65535, ERR_INVALID_PARAMETER, "The remote port number must be between 1 and 65535 (inclusive)."); Error err; @@ -328,6 +330,12 @@ int PacketPeerUDP::get_packet_port() const { return packet_port; } +int PacketPeerUDP::get_local_port() const { + uint16_t local_port; + _sock->get_socket_address(nullptr, &local_port); + return local_port; +} + void PacketPeerUDP::set_dest_address(const IP_Address &p_address, int p_port) { ERR_FAIL_COND_MSG(connected, "Destination address cannot be set for connected sockets"); peer_addr = p_address; @@ -343,6 +351,7 @@ void PacketPeerUDP::_bind_methods() { ClassDB::bind_method(D_METHOD("is_connected_to_host"), &PacketPeerUDP::is_connected_to_host); ClassDB::bind_method(D_METHOD("get_packet_ip"), &PacketPeerUDP::_get_packet_ip); ClassDB::bind_method(D_METHOD("get_packet_port"), &PacketPeerUDP::get_packet_port); + ClassDB::bind_method(D_METHOD("get_local_port"), &PacketPeerUDP::get_local_port); ClassDB::bind_method(D_METHOD("set_dest_address", "host", "port"), &PacketPeerUDP::_set_dest_address); ClassDB::bind_method(D_METHOD("set_broadcast_enabled", "enabled"), &PacketPeerUDP::set_broadcast_enabled); ClassDB::bind_method(D_METHOD("join_multicast_group", "multicast_address", "interface_name"), &PacketPeerUDP::join_multicast_group); diff --git a/core/io/packet_peer_udp.h b/core/io/packet_peer_udp.h index 4bac6994fcc..877ee0c90b5 100644 --- a/core/io/packet_peer_udp.h +++ b/core/io/packet_peer_udp.h @@ -83,6 +83,7 @@ public: IP_Address get_packet_address() const; int get_packet_port() const; + int get_local_port() const; void set_dest_address(const IP_Address &p_address, int p_port); Error put_packet(const uint8_t *p_buffer, int p_buffer_size) override; diff --git a/core/io/stream_peer_tcp.cpp b/core/io/stream_peer_tcp.cpp index 760710a9eb1..9906b9e4c35 100644 --- a/core/io/stream_peer_tcp.cpp +++ b/core/io/stream_peer_tcp.cpp @@ -67,21 +67,40 @@ void StreamPeerTCP::accept_socket(Ref p_sock, IP_Address p_host, uint peer_port = p_port; } -Error StreamPeerTCP::connect_to_host(const IP_Address &p_host, uint16_t p_port) { +Error StreamPeerTCP::bind(int p_port, const IP_Address &p_host) { ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE); ERR_FAIL_COND_V(_sock->is_open(), ERR_ALREADY_IN_USE); - ERR_FAIL_COND_V(!p_host.is_valid(), ERR_INVALID_PARAMETER); + ERR_FAIL_COND_V_MSG(p_port < 0 || p_port > 65535, ERR_INVALID_PARAMETER, "The local port number must be between 0 and 65535 (inclusive)."); - Error err; IP::Type ip_type = p_host.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6; - - err = _sock->open(NetSocket::TYPE_TCP, ip_type); - ERR_FAIL_COND_V(err != OK, FAILED); - + if (p_host.is_wildcard()) { + ip_type = IP::TYPE_ANY; + } + Error err = _sock->open(NetSocket::TYPE_TCP, ip_type); + if (err != OK) { + return err; + } _sock->set_blocking_enabled(false); + return _sock->bind(p_host, p_port); +} + +Error StreamPeerTCP::connect_to_host(const IP_Address &p_host, int p_port) { + ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE); + ERR_FAIL_COND_V(status != STATUS_NONE, ERR_ALREADY_IN_USE); + ERR_FAIL_COND_V(!p_host.is_valid(), ERR_INVALID_PARAMETER); + ERR_FAIL_COND_V_MSG(p_port < 1 || p_port > 65535, ERR_INVALID_PARAMETER, "The remote port number must be between 1 and 65535 (inclusive)."); + + if (!_sock->is_open()) { + IP::Type ip_type = p_host.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6; + Error err = _sock->open(NetSocket::TYPE_TCP, ip_type); + if (err != OK) { + return err; + } + _sock->set_blocking_enabled(false); + } timeout = OS::get_singleton()->get_ticks_msec() + (((uint64_t)GLOBAL_GET("network/limits/tcp/connect_timeout_seconds")) * 1000); - err = _sock->connect_to_host(p_host, p_port); + Error err = _sock->connect_to_host(p_host, p_port); if (err == OK) { status = STATUS_CONNECTED; @@ -300,10 +319,16 @@ IP_Address StreamPeerTCP::get_connected_host() const { return peer_host; } -uint16_t StreamPeerTCP::get_connected_port() const { +int StreamPeerTCP::get_connected_port() const { return peer_port; } +int StreamPeerTCP::get_local_port() const { + uint16_t local_port; + _sock->get_socket_address(nullptr, &local_port); + return local_port; +} + Error StreamPeerTCP::_connect(const String &p_address, int p_port) { IP_Address ip; if (p_address.is_valid_ip_address()) { @@ -319,11 +344,13 @@ Error StreamPeerTCP::_connect(const String &p_address, int p_port) { } void StreamPeerTCP::_bind_methods() { + ClassDB::bind_method(D_METHOD("bind", "port", "host"), &StreamPeerTCP::bind, DEFVAL("*")); ClassDB::bind_method(D_METHOD("connect_to_host", "host", "port"), &StreamPeerTCP::_connect); ClassDB::bind_method(D_METHOD("is_connected_to_host"), &StreamPeerTCP::is_connected_to_host); ClassDB::bind_method(D_METHOD("get_status"), &StreamPeerTCP::get_status); ClassDB::bind_method(D_METHOD("get_connected_host"), &StreamPeerTCP::get_connected_host); ClassDB::bind_method(D_METHOD("get_connected_port"), &StreamPeerTCP::get_connected_port); + ClassDB::bind_method(D_METHOD("get_local_port"), &StreamPeerTCP::get_local_port); ClassDB::bind_method(D_METHOD("disconnect_from_host"), &StreamPeerTCP::disconnect_from_host); ClassDB::bind_method(D_METHOD("set_no_delay", "enabled"), &StreamPeerTCP::set_no_delay); diff --git a/core/io/stream_peer_tcp.h b/core/io/stream_peer_tcp.h index 10b90908d43..3bc7b252dcf 100644 --- a/core/io/stream_peer_tcp.h +++ b/core/io/stream_peer_tcp.h @@ -65,10 +65,12 @@ protected: public: void accept_socket(Ref p_sock, IP_Address p_host, uint16_t p_port); - Error connect_to_host(const IP_Address &p_host, uint16_t p_port); + Error bind(int p_port, const IP_Address &p_host); + Error connect_to_host(const IP_Address &p_host, int p_port); bool is_connected_to_host() const; IP_Address get_connected_host() const; - uint16_t get_connected_port() const; + int get_connected_port() const; + int get_local_port() const; void disconnect_from_host(); int get_available_bytes() const override; diff --git a/core/io/tcp_server.cpp b/core/io/tcp_server.cpp index 323d2bbd7fc..348be66ba4c 100644 --- a/core/io/tcp_server.cpp +++ b/core/io/tcp_server.cpp @@ -34,6 +34,7 @@ void TCP_Server::_bind_methods() { ClassDB::bind_method(D_METHOD("listen", "port", "bind_address"), &TCP_Server::listen, DEFVAL("*")); ClassDB::bind_method(D_METHOD("is_connection_available"), &TCP_Server::is_connection_available); ClassDB::bind_method(D_METHOD("is_listening"), &TCP_Server::is_listening); + ClassDB::bind_method(D_METHOD("get_local_port"), &TCP_Server::get_local_port); ClassDB::bind_method(D_METHOD("take_connection"), &TCP_Server::take_connection); ClassDB::bind_method(D_METHOD("stop"), &TCP_Server::stop); } @@ -42,6 +43,7 @@ Error TCP_Server::listen(uint16_t p_port, const IP_Address &p_bind_address) { ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE); ERR_FAIL_COND_V(_sock->is_open(), ERR_ALREADY_IN_USE); ERR_FAIL_COND_V(!p_bind_address.is_valid() && !p_bind_address.is_wildcard(), ERR_INVALID_PARAMETER); + ERR_FAIL_COND_V_MSG(p_port < 0 || p_port > 65535, ERR_INVALID_PARAMETER, "The local port number must be between 0 and 65535 (inclusive)."); Error err; IP::Type ip_type = IP::TYPE_ANY; @@ -74,6 +76,12 @@ Error TCP_Server::listen(uint16_t p_port, const IP_Address &p_bind_address) { return OK; } +int TCP_Server::get_local_port() const { + uint16_t local_port; + _sock->get_socket_address(nullptr, &local_port); + return local_port; +} + bool TCP_Server::is_listening() const { ERR_FAIL_COND_V(!_sock.is_valid(), false); diff --git a/core/io/tcp_server.h b/core/io/tcp_server.h index f06ddd2d993..58c04d87ec7 100644 --- a/core/io/tcp_server.h +++ b/core/io/tcp_server.h @@ -49,6 +49,7 @@ protected: public: Error listen(uint16_t p_port, const IP_Address &p_bind_address = IP_Address("*")); + int get_local_port() const; bool is_listening() const; bool is_connection_available() const; Ref take_connection(); diff --git a/core/io/udp_server.cpp b/core/io/udp_server.cpp index f56fb431ef1..99642f4af45 100644 --- a/core/io/udp_server.cpp +++ b/core/io/udp_server.cpp @@ -34,6 +34,7 @@ void UDPServer::_bind_methods() { ClassDB::bind_method(D_METHOD("listen", "port", "bind_address"), &UDPServer::listen, DEFVAL("*")); ClassDB::bind_method(D_METHOD("poll"), &UDPServer::poll); ClassDB::bind_method(D_METHOD("is_connection_available"), &UDPServer::is_connection_available); + ClassDB::bind_method(D_METHOD("get_local_port"), &UDPServer::get_local_port); ClassDB::bind_method(D_METHOD("is_listening"), &UDPServer::is_listening); ClassDB::bind_method(D_METHOD("take_connection"), &UDPServer::take_connection); ClassDB::bind_method(D_METHOD("stop"), &UDPServer::stop); @@ -90,6 +91,7 @@ Error UDPServer::listen(uint16_t p_port, const IP_Address &p_bind_address) { ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE); ERR_FAIL_COND_V(_sock->is_open(), ERR_ALREADY_IN_USE); ERR_FAIL_COND_V(!p_bind_address.is_valid() && !p_bind_address.is_wildcard(), ERR_INVALID_PARAMETER); + ERR_FAIL_COND_V_MSG(p_port < 0 || p_port > 65535, ERR_INVALID_PARAMETER, "The local port number must be between 0 and 65535 (inclusive)."); Error err; IP::Type ip_type = IP::TYPE_ANY; @@ -112,11 +114,15 @@ Error UDPServer::listen(uint16_t p_port, const IP_Address &p_bind_address) { stop(); return err; } - bind_address = p_bind_address; - bind_port = p_port; return OK; } +int UDPServer::get_local_port() const { + uint16_t local_port; + _sock->get_socket_address(nullptr, &local_port); + return local_port; +} + bool UDPServer::is_listening() const { ERR_FAIL_COND_V(!_sock.is_valid(), false); @@ -176,8 +182,6 @@ void UDPServer::stop() { if (_sock.is_valid()) { _sock->close(); } - bind_port = 0; - bind_address = IP_Address(); List::Element *E = peers.front(); while (E) { E->get().peer->disconnect_shared_socket(); diff --git a/core/io/udp_server.h b/core/io/udp_server.h index bbd2f951c9f..298d4d4b63b 100644 --- a/core/io/udp_server.h +++ b/core/io/udp_server.h @@ -53,21 +53,18 @@ protected: }; uint8_t recv_buffer[PACKET_BUFFER_SIZE]; - int bind_port = 0; - IP_Address bind_address; - List peers; List pending; int max_pending_connections = 16; Ref _sock; - static void _bind_methods(); public: void remove_peer(IP_Address p_ip, int p_port); Error listen(uint16_t p_port, const IP_Address &p_bind_address = IP_Address("*")); Error poll(); + int get_local_port() const; bool is_listening() const; bool is_connection_available() const; void set_max_pending_connections(int p_max); diff --git a/doc/classes/PacketPeerUDP.xml b/doc/classes/PacketPeerUDP.xml index d7cf6cc8c6c..2ea5c8a0a45 100644 --- a/doc/classes/PacketPeerUDP.xml +++ b/doc/classes/PacketPeerUDP.xml @@ -28,6 +28,13 @@ [b]Note:[/b] Connecting to the remote peer does not help to protect from malicious attacks like IP spoofing, etc. Think about using an encryption technique like SSL or DTLS if you feel like your application is transferring sensitive information. + + + + + Returns the local port to which this peer is bound. + + diff --git a/doc/classes/StreamPeerTCP.xml b/doc/classes/StreamPeerTCP.xml index b6d91715eed..7b7c1d74264 100644 --- a/doc/classes/StreamPeerTCP.xml +++ b/doc/classes/StreamPeerTCP.xml @@ -9,6 +9,18 @@ + + + + + + + + + Opens the TCP socket, and binds it to the specified local address. + This method is generally not needed, and only used to force the subsequent call to [method connect_to_host] to use the specified [code]host[/code] and [code]port[/code] as source address. This can be desired in some NAT punchthrough techniques, or when forcing the source network interface. + + @@ -17,7 +29,7 @@ - Connects to the specified [code]host:port[/code] pair. A hostname will be resolved if valid. Returns [constant OK] on success or [constant FAILED] on failure. + Connects to the specified [code]host:port[/code] pair. A hostname will be resolved if valid. Returns [constant OK] on success. @@ -41,6 +53,13 @@ Returns the port of this peer. + + + + + Returns the local port to which this peer is bound. + + diff --git a/doc/classes/TCP_Server.xml b/doc/classes/TCP_Server.xml index 72e9ca923da..ec91d75d470 100644 --- a/doc/classes/TCP_Server.xml +++ b/doc/classes/TCP_Server.xml @@ -9,6 +9,13 @@ + + + + + Returns the local port this server is listening to. + + diff --git a/doc/classes/UDPServer.xml b/doc/classes/UDPServer.xml index 0fc00f67f84..931aa71332c 100644 --- a/doc/classes/UDPServer.xml +++ b/doc/classes/UDPServer.xml @@ -123,6 +123,13 @@ + + + + + Returns the local port this server is listening to. + + diff --git a/drivers/unix/net_socket_posix.cpp b/drivers/unix/net_socket_posix.cpp index 19753943c8c..d3c741c93e5 100644 --- a/drivers/unix/net_socket_posix.cpp +++ b/drivers/unix/net_socket_posix.cpp @@ -130,18 +130,23 @@ size_t NetSocketPosix::_set_addr_storage(struct sockaddr_storage *p_addr, const } } -void NetSocketPosix::_set_ip_port(struct sockaddr_storage *p_addr, IP_Address &r_ip, uint16_t &r_port) { +void NetSocketPosix::_set_ip_port(struct sockaddr_storage *p_addr, IP_Address *r_ip, uint16_t *r_port) { if (p_addr->ss_family == AF_INET) { struct sockaddr_in *addr4 = (struct sockaddr_in *)p_addr; - r_ip.set_ipv4((uint8_t *)&(addr4->sin_addr.s_addr)); - - r_port = ntohs(addr4->sin_port); - + if (r_ip) { + r_ip->set_ipv4((uint8_t *)&(addr4->sin_addr.s_addr)); + } + if (r_port) { + *r_port = ntohs(addr4->sin_port); + } } else if (p_addr->ss_family == AF_INET6) { struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr; - r_ip.set_ipv6(addr6->sin6_addr.s6_addr); - - r_port = ntohs(addr6->sin6_port); + if (r_ip) { + r_ip->set_ipv6(addr6->sin6_addr.s6_addr); + } + if (r_port) { + *r_port = ntohs(addr6->sin6_port); + } }; } @@ -186,13 +191,21 @@ NetSocketPosix::~NetSocketPosix() { NetSocketPosix::NetError NetSocketPosix::_get_socket_error() const { #if defined(WINDOWS_ENABLED) int err = WSAGetLastError(); - - if (err == WSAEISCONN) + if (err == WSAEISCONN) { return ERR_NET_IS_CONNECTED; - if (err == WSAEINPROGRESS || err == WSAEALREADY) + } + if (err == WSAEINPROGRESS || err == WSAEALREADY) { return ERR_NET_IN_PROGRESS; - if (err == WSAEWOULDBLOCK) + } + if (err == WSAEWOULDBLOCK) { return ERR_NET_WOULD_BLOCK; + } + if (err == WSAEADDRINUSE || err == WSAEADDRNOTAVAIL) { + return ERR_NET_ADDRESS_INVALID_OR_UNAVAILABLE; + } + if (err == WSAEACCES) { + return ERR_NET_UNAUTHORIZED; + } print_verbose("Socket error: " + itos(err)); return ERR_NET_OTHER; #else @@ -205,6 +218,12 @@ NetSocketPosix::NetError NetSocketPosix::_get_socket_error() const { if (errno == EAGAIN || errno == EWOULDBLOCK) { return ERR_NET_WOULD_BLOCK; } + if (errno == EADDRINUSE || errno == EINVAL || errno == EADDRNOTAVAIL) { + return ERR_NET_ADDRESS_INVALID_OR_UNAVAILABLE; + } + if (errno == EACCES) { + return ERR_NET_UNAUTHORIZED; + } print_verbose("Socket error: " + itos(errno)); return ERR_NET_OTHER; #endif @@ -384,8 +403,8 @@ Error NetSocketPosix::bind(IP_Address p_addr, uint16_t p_port) { size_t addr_size = _set_addr_storage(&addr, p_addr, p_port, _ip_type); if (::bind(_sock, (struct sockaddr *)&addr, addr_size) != 0) { - _get_socket_error(); - print_verbose("Failed to bind socket."); + NetError err = _get_socket_error(); + print_verbose("Failed to bind socket. Error: " + itos(err)); close(); return ERR_UNAVAILABLE; } @@ -716,6 +735,20 @@ int NetSocketPosix::get_available_bytes() const { return len; } +Error NetSocketPosix::get_socket_address(IP_Address *r_ip, uint16_t *r_port) const { + ERR_FAIL_COND_V(!is_open(), FAILED); + + struct sockaddr_storage saddr; + socklen_t len = sizeof(saddr); + if (getsockname(_sock, (struct sockaddr *)&saddr, &len) != 0) { + _get_socket_error(); + print_verbose("Error when reading local socket address."); + return FAILED; + } + _set_ip_port(&saddr, r_ip, r_port); + return OK; +} + Ref NetSocketPosix::accept(IP_Address &r_ip, uint16_t &r_port) { Ref out; ERR_FAIL_COND_V(!is_open(), out); @@ -729,7 +762,7 @@ Ref NetSocketPosix::accept(IP_Address &r_ip, uint16_t &r_port) { return out; } - _set_ip_port(&their_addr, r_ip, r_port); + _set_ip_port(&their_addr, &r_ip, &r_port); NetSocketPosix *ns = memnew(NetSocketPosix); ns->_set_socket(fd, _ip_type, _is_stream); diff --git a/drivers/unix/net_socket_posix.h b/drivers/unix/net_socket_posix.h index cc6af661c8a..dbfe3a524e7 100644 --- a/drivers/unix/net_socket_posix.h +++ b/drivers/unix/net_socket_posix.h @@ -54,7 +54,9 @@ private: ERR_NET_WOULD_BLOCK, ERR_NET_IS_CONNECTED, ERR_NET_IN_PROGRESS, - ERR_NET_OTHER + ERR_NET_ADDRESS_INVALID_OR_UNAVAILABLE, + ERR_NET_UNAUTHORIZED, + ERR_NET_OTHER, }; NetError _get_socket_error() const; @@ -70,7 +72,7 @@ protected: public: static void make_default(); static void cleanup(); - static void _set_ip_port(struct sockaddr_storage *p_addr, IP_Address &r_ip, uint16_t &r_port); + static void _set_ip_port(struct sockaddr_storage *p_addr, IP_Address *r_ip, uint16_t *r_port); static size_t _set_addr_storage(struct sockaddr_storage *p_addr, const IP_Address &p_ip, uint16_t p_port, IP::Type p_ip_type); virtual Error open(Type p_sock_type, IP::Type &ip_type); @@ -87,6 +89,7 @@ public: virtual bool is_open() const; virtual int get_available_bytes() const; + virtual Error get_socket_address(IP_Address *r_ip, uint16_t *r_port) const; virtual Error set_broadcasting_enabled(bool p_enabled); virtual void set_blocking_enabled(bool p_enabled);