/* -------------------------------------------------------------------------
- * Project: GSocket (Generic Socket)
- * Name: gsocket.h
- * Purpose: GSocket include file (system independent)
- * CVSID: $Id$
+ * Project: GSocket (Generic Socket)
+ * Name: gsocket.h
+ * Author: Guilhem Lavaux
+ * Guillermo Rodriguez Garcia <guille@iies.es>
+ * Copyright: (c) Guilhem Lavaux
+ * (c) 2007,2008 Vadim Zeitlin <vadim@wxwidgets.org>
+ * Licence: wxWindows Licence
+ * Purpose: GSocket include file (system independent)
+ * CVSID: $Id$
* -------------------------------------------------------------------------
*/
-#ifndef __GSOCKET_H
-#define __GSOCKET_H
-#include <sys/types.h>
+#ifndef _WX_GSOCKET_H_
+#define _WX_GSOCKET_H_
-#if !defined(__cplusplus)
+#include "wx/defs.h"
-typedef int bool;
+#if wxUSE_SOCKETS
-#endif
+#include "wx/dlimpexp.h" /* for WXDLLIMPEXP_NET */
-#ifndef TRUE
-#define TRUE 1
-#endif
+#include <stddef.h>
-#ifndef FALSE
-#define FALSE 0
+/*
+ Including sys/types.h under Cygwin results in the warnings about "fd_set
+ having been defined in sys/types.h" when winsock.h is included later and
+ doesn't seem to be necessary anyhow. It's not needed under Mac neither.
+ */
+#if !defined(__WXMAC__) && !defined(__CYGWIN__) && !defined(__WXWINCE__)
+#include <sys/types.h>
#endif
-typedef struct _GSocket GSocket;
-typedef struct _GAddress GAddress;
+#ifdef __WXWINCE__
+#include <stdlib.h>
+#endif
-typedef enum {
+enum GAddressType
+{
GSOCK_NOFAMILY = 0,
GSOCK_INET,
GSOCK_INET6,
GSOCK_UNIX
-} GAddressType;
+};
-typedef enum {
+enum GSocketStream
+{
GSOCK_STREAMED,
GSOCK_UNSTREAMED
-} GSocketStream;
+};
-typedef enum {
+enum GSocketError
+{
GSOCK_NOERROR = 0,
GSOCK_INVOP,
GSOCK_IOERR,
GSOCK_INVADDR,
GSOCK_INVSOCK,
GSOCK_NOHOST,
- GSOCK_INVPORT
-} GSocketError;
+ GSOCK_INVPORT,
+ GSOCK_WOULDBLOCK,
+ GSOCK_TIMEDOUT,
+ GSOCK_MEMERR,
+ GSOCK_OPTERR
+};
-typedef enum {
+/* See below for an explanation on how events work.
+ */
+enum GSocketEvent
+{
GSOCK_INPUT = 0,
GSOCK_OUTPUT = 1,
GSOCK_CONNECTION = 2,
GSOCK_LOST = 3,
GSOCK_MAX_EVENT = 4
-} GSocketEvent;
+};
-enum {
+enum
+{
GSOCK_INPUT_FLAG = 1 << GSOCK_INPUT,
GSOCK_OUTPUT_FLAG = 1 << GSOCK_OUTPUT,
GSOCK_CONNECTION_FLAG = 1 << GSOCK_CONNECTION,
- GSOCK_LOST_FLAG = 1 << GSOCK_LOST,
+ GSOCK_LOST_FLAG = 1 << GSOCK_LOST
};
typedef int GSocketEventFlags;
-typedef void (*GSocketFallback)(GSocket *socket, GSocketEvent event,
- char *cdata);
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Constructors / Destructors */
+struct GAddress;
+class GSocket;
-GSocket *GSocket_new();
-void GSocket_destroy(GSocket *socket);
+typedef void (*GSocketCallback)(GSocket *socket, GSocketEvent event,
+ char *cdata);
-/* This will disable all IO calls to this socket but errors are still available */
-void GSocket_Shutdown(GSocket *socket);
+/*
+ Class providing hooks abstracting the differences between console and GUI
+ applications for socket code.
+
+ We also have different implementations of this class for different platforms
+ allowing us to keep more things in the common code but the main reason for
+ its existence is that we want the same socket code work differently
+ depending on whether it's used from a console or a GUI program. This is
+ achieved by implementing the virtual methods of this class differently in
+ the objects returned by wxConsoleAppTraits::GetSocketFunctionsTable() and
+ the same method in wxGUIAppTraits.
+ */
+class GSocketManager
+{
+public:
+ // set the manager to use, we don't take ownership of it
+ //
+ // this should be called before GSocket_Init(), i.e. before the first
+ // wxSocket object is created, otherwise the manager returned by
+ // wxAppTraits::GetSocketManager() will be used
+ static void Set(GSocketManager *manager);
+
+ // return the manager to use
+ //
+ // this initializes the manager at first use
+ static GSocketManager *Get()
+ {
+ if ( !ms_manager )
+ Init();
+
+ return ms_manager;
+ }
+
+ // called before the first wxSocket is created and should do the
+ // initializations needed in order to use the network
+ //
+ // return true if initialized successfully
+ virtual bool OnInit() = 0;
+
+ // undo the initializations of OnInit()
+ virtual void OnExit() = 0;
+
+
+ // do manager-specific socket initializations (and undo it): this is called
+ // in the beginning/end of the socket initialization/destruction
+ virtual bool Init_Socket(GSocket *socket) = 0;
+ virtual void Destroy_Socket(GSocket *socket) = 0;
+
+ virtual void Install_Callback(GSocket *socket, GSocketEvent event) = 0;
+ virtual void Uninstall_Callback(GSocket *socket, GSocketEvent event) = 0;
+
+ virtual void Enable_Events(GSocket *socket) = 0;
+ virtual void Disable_Events(GSocket *socket) = 0;
+
+ virtual ~GSocketManager() { }
+
+private:
+ // get the manager to use if we don't have it yet
+ static void Init();
+
+ static GSocketManager *ms_manager;
+};
-/* Address handling */
+#if defined(__WINDOWS__)
+ #include "wx/msw/gsockmsw.h"
+#else
+ #include "wx/unix/gsockunx.h"
+#endif
-GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address);
-GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address);
-GAddress *GSocket_GetLocal(GSocket *socket);
-GAddress *GSocket_GetPeer(GSocket *socket);
-/* Non-oriented connections handlers */
+/* Global initializers */
-GSocketError GSocket_SetNonOriented(GSocket *socket);
+/* GSocket_Init() must be called at the beginning (but after calling
+ * GSocketManager::Set() if a custom manager should be used) */
+bool GSocket_Init();
-/* Server specific parts */
+/* GSocket_Cleanup() must be called at the end */
+void GSocket_Cleanup();
-/*
- GSocket_SetServer() setup the socket as a server. It uses the "Local" field
- of GSocket. "Local" must be set by GSocket_SetLocal() before
- GSocket_SetServer() is called. In the other case, it returns GSOCK_INVADDR.
-*/
-GSocketError GSocket_SetServer(GSocket *socket);
-/*
- GSocket_WaitConnection() waits for an incoming client connection.
-*/
-GSocket *GSocket_WaitConnection(GSocket *socket);
+/* Constructors / Destructors */
-/* Client specific parts */
+GSocket *GSocket_new();
-/*
- GSocket_Connect() establishes a client connection to a server using the "Peer"
- field of GSocket. "Peer" must be set by GSocket_SetPeer() before
- GSocket_Connect() is called. In the other case, it returns GSOCK_INVADDR.
-*/
-GSocketError GSocket_Connect(GSocket *socket, GSocketStream stream);
-
-/* Generic IO */
-
-/* Like recv(), send(), ... */
-/*
- NOTE: In case we read from a non-oriented connection, the incoming (outgoing)
- connection address is stored in the "Local" ("Peer") field.
-*/
-int GSocket_Read(GSocket *socket, char *buffer, int size);
-int GSocket_Write(GSocket *socket, const char *buffer,
- int size);
-bool GSocket_DataAvailable(GSocket *socket);
-
-/* Flags */
-/*
- GSocket_SetBlocking() puts the socket in non-blocking mode. This is useful
- if we don't want to wait.
-*/
-void GSocket_SetBlocking(GSocket *socket, bool block);
+/* GAddress */
-/*
- GSocket_GetError() returns the last error occured on the socket stream.
-*/
-
-GSocketError GSocket_GetError(GSocket *socket);
-
-/* Callbacks */
-
-/*
- Only one fallback is possible for each event (INPUT, OUTPUT, CONNECTION, LOST)
- INPUT: The function is called when there is at least a byte in the
- input buffer
- OUTPUT: The function is called when the system is sure the next write call
- will not block
- CONNECTION: Two cases is possible:
- Client socket -> the connection is established
- Server socket -> a client request a connection
- LOST: the connection is lost
-
- SetFallback accepts a combination of these flags so a same callback can
- receive different events.
-
- An event is generated only once and its state is reseted when the relative
- IO call is requested.
- For example: INPUT -> GSocket_Read()
- CONNECTION -> GSocket_Accept()
-*/
-void GSocket_SetFallback(GSocket *socket, GSocketEventFlags event,
- GSocketFallback fallback, char *cdata);
+// Represents a socket endpoint, i.e. -- in spite of its name -- not an address
+// but an (address, port) pair
+struct GAddress
+{
+ struct sockaddr *m_addr;
+ size_t m_len;
-/*
- UnsetFallback will disables all fallbacks specified by "event".
- NOTE: event may be a combination of flags
-*/
-void GSocket_UnsetFallback(GSocket *socket, GSocketEventFlags event);
+ GAddressType m_family;
+ int m_realfamily;
-/* GAddress */
+ GSocketError m_error;
+};
GAddress *GAddress_new();
GAddress *GAddress_copy(GAddress *address);
void GAddress_SetFamily(GAddress *address, GAddressType type);
GAddressType GAddress_GetFamily(GAddress *address);
-/*
- The use of any of the next functions will set the address family to the adapted
- one. For example if you use GAddress_INET_SetHostName, address family will be AF_INET
- implicitely
-*/
+/* The use of any of the next functions will set the address family to
+ * the specific one. For example if you use GAddress_INET_SetHostName,
+ * address family will be implicitly set to AF_INET.
+ */
GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname);
+GSocketError GAddress_INET_SetBroadcastAddress(GAddress *address);
+GSocketError GAddress_INET_SetAnyAddress(GAddress *address);
GSocketError GAddress_INET_SetHostAddress(GAddress *address,
unsigned long hostaddr);
-GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port);
+GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
+ const char *protocol);
GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port);
GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname,
unsigned long GAddress_INET_GetHostAddress(GAddress *address);
unsigned short GAddress_INET_GetPort(GAddress *address);
-/* TODO: Define specific parts (INET6, UNIX) */
+GSocketError _GAddress_translate_from(GAddress *address,
+ struct sockaddr *addr, int len);
+GSocketError _GAddress_translate_to (GAddress *address,
+ struct sockaddr **addr, int *len);
+GSocketError _GAddress_Init_INET(GAddress *address);
-GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path);
-GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf);
+#if wxUSE_IPV6
-/*
- * System specific functions
- */
+GSocketError GAddress_INET6_SetHostName(GAddress *address, const char *hostname);
+GSocketError GAddress_INET6_SetAnyAddress(GAddress *address);
+GSocketError GAddress_INET6_SetHostAddress(GAddress *address,
+ struct in6_addr hostaddr);
+GSocketError GAddress_INET6_SetPortName(GAddress *address, const char *port,
+ const char *protocol);
+GSocketError GAddress_INET6_SetPort(GAddress *address, unsigned short port);
-/* On systems needing an event id */
-void GSocket_SetEventID(GSocket *socket, unsigned long evt_id);
+GSocketError GAddress_INET6_GetHostName(GAddress *address, char *hostname,
+ size_t sbuf);
+GSocketError GAddress_INET6_GetHostAddress(GAddress *address,struct in6_addr *hostaddr);
+unsigned short GAddress_INET6_GetPort(GAddress *address);
-/* On systems which don't have background refresh */
-void GSocket_DoEvent(unsigned long evt_id);
+#endif // wxUSE_IPV6
-#ifdef __cplusplus
-};
-#endif
+// these functions are available under all platforms but only implemented under
+// Unix ones, elsewhere they just return GSOCK_INVADDR
+GSocketError _GAddress_Init_UNIX(GAddress *address);
+GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path);
+GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf);
-#endif
- /* __GSOCKET_H */
+#endif /* wxUSE_SOCKETS */
+
+#endif /* _WX_GSOCKET_H_ */
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