* -------------------------------------------------------------------------
*/
+#include "wx/setup.h"
+
+#if wxUSE_SOCKETS
+
#include <assert.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
+#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
+#include <stddef.h>
+#include <ctype.h>
#ifdef sun
- #include <sys/filio.h>
+# include <sys/filio.h>
#endif
#ifdef sgi
- #include <bstring.h>
+# include <bstring.h>
#endif
#include <signal.h>
-#include "wx/setup.h"
#include "wx/gsocket.h"
#include "gsockunx.h"
socket = (GSocket *)malloc(sizeof(GSocket));
+ if (socket == NULL)
+ return NULL;
+
socket->m_fd = -1;
for (i=0;i<GSOCK_MAX_EVENT;i++) {
socket->m_fbacks[i] = NULL;
socket->m_stream = TRUE;
socket->m_gui_dependent = NULL;
socket->m_blocking = FALSE;
+ socket->m_timeout = 10*60*1000;
+ // 10 minutes * 60 sec * 1000 millisec
/* We initialize the GUI specific entries here */
_GSocket_GUI_Init(socket);
/* We also disable GUI callbacks */
for (evt=0;evt<GSOCK_MAX_EVENT;evt++)
- _GSocket_Uninstall_Fallback(socket, evt);
+ _GSocket_Uninstall_Callback(socket, evt);
}
/* Address handling */
}
address = GAddress_new();
- _GAddress_translate_from(address, &addr, size);
+ if (address == NULL) {
+ socket->m_error = GSOCK_MEMERR;
+ return NULL;
+ }
+ if (!_GAddress_translate_from(address, &addr, size)) {
+ socket->m_error = GSOCK_MEMERR;
+ GAddress_destroy(address);
+ return NULL;
+ }
return address;
}
return GSOCK_INVADDR;
}
- if (sck->m_stream)
- type = SOCK_STREAM;
- else
- type = SOCK_DGRAM;
+ /* We always have a stream here */
+ sck->m_stream = TRUE;
- sck->m_fd = socket(sck->m_local->m_realfamily, type, 0);
+ /* Create the socket */
+ sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0);
if (sck->m_fd == -1) {
sck->m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
+ /* Bind the socket to the LOCAL address */
if (bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) < 0) {
close(sck->m_fd);
sck->m_fd = -1;
return GSOCK_IOERR;
}
+ /* Enable listening up to 5 connections */
if (listen(sck->m_fd, 5) < 0) {
close(sck->m_fd);
sck->m_fd = -1;
return GSOCK_IOERR;
}
- sck->m_server = TRUE;
+ GSocket_SetNonBlocking(sck, sck->m_blocking);
+ GSocket_SetTimeout(sck, sck->m_timeout);
return GSOCK_NOERROR;
-
}
/*
assert(socket != NULL);
+ /* If the socket has already been created, we exit immediately */
if (socket->m_fd == -1 || !socket->m_server) {
socket->m_error = GSOCK_INVSOCK;
return NULL;
}
+ /* Reenable GSOCK_CONNECTION event */
_GSocket_Enable(socket, GSOCK_CONNECTION);
+ /* Create a GSocket object for the new connection */
connection = GSocket_new();
+ /* Accept the incoming connection */
connection->m_fd = accept(socket->m_fd, NULL, NULL);
if (connection->m_fd == -1) {
GSocket_destroy(connection);
return NULL;
}
+ /* Initialize all fields */
connection->m_stream = TRUE;
connection->m_server = FALSE;
connection->m_oriented = TRUE;
sck->m_server = FALSE;
sck->m_oriented = FALSE;
+ /* Create the socket */
sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0);
+ /* Bind it to the LOCAL address */
if (bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) < 0) {
close(sck->m_fd);
sck->m_fd = -1;
return GSOCK_IOERR;
}
+ GSocket_SetNonBlocking(sck, sck->m_blocking);
+ GSocket_SetTimeout(sck, sck->m_timeout);
+
return GSOCK_NOERROR;
}
return GSOCK_INVADDR;
}
+ /* Test whether we want the socket to be a stream (e.g. TCP) */
sck->m_stream = (stream == GSOCK_STREAMED);
sck->m_oriented = TRUE;
else
type = SOCK_DGRAM;
+ /* Create the socket */
sck->m_fd = socket(sck->m_peer->m_realfamily, type, 0);
if (sck->m_fd == -1) {
return GSOCK_IOERR;
}
+ /* Connect it to the PEER address */
if (connect(sck->m_fd, sck->m_peer->m_addr,
sck->m_peer->m_len) != 0) {
close(sck->m_fd);
return GSOCK_IOERR;
}
+ /* It is not a server */
sck->m_server = FALSE;
+ GSocket_SetNonBlocking(sck, sck->m_blocking);
+ GSocket_SetTimeout(sck, sck->m_timeout);
+
return GSOCK_NOERROR;
}
return -1;
}
+ /* Reenable GSOCK_INPUT event */
_GSocket_Enable(socket, GSOCK_INPUT);
- if (socket->m_oriented)
+ if (socket->m_stream)
return _GSocket_Recv_Stream(socket, buffer, size);
else
return _GSocket_Recv_Dgram(socket, buffer, size);
_GSocket_Enable(socket, GSOCK_OUTPUT);
- if (socket->m_oriented)
+ if (socket->m_stream)
return _GSocket_Send_Stream(socket, buffer, size);
else
return _GSocket_Send_Dgram(socket, buffer, size);
/* Flags */
/*
- GSocket_SetBlocking() puts the socket in non-blocking mode. This is useful
+ GSocket_SetNonBlocking() puts the socket in non-blocking mode. This is useful
if we don't want to wait.
*/
-void GSocket_SetBlocking(GSocket *socket, bool block)
+void GSocket_SetNonBlocking(GSocket *socket, bool non_block)
{
assert(socket != NULL);
ioctl(socket->m_fd, FIONBIO, &block);
}
+/*
+ * GSocket_SetTimeout()
+ */
+
+#ifndef LINUX
+# define CAN_USE_TIMEOUT
+#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__)
+# if (__GLIBC__ == 2) && (__GLIBC_MINOR__ == 1)
+# define CAN_USE_TIMEOUT
+# endif
+#endif
+
+void GSocket_SetTimeout(GSocket *socket, unsigned long millisec)
+{
+ assert(socket != NULL);
+
+ /* Neither GLIBC 2.0 nor the kernel 2.0.36 define SO_SNDTIMEO or
+ SO_RCVTIMEO. The man pages, that these flags should exist but
+ are read only. RR. */
+ /* OK, restrict this to GLIBC 2.1. GL. */
+#ifdef CAN_USE_TIMEOUT
+ socket->m_timeout = millisec;
+ if (socket->m_fd != -1) {
+ struct timeval tval;
+
+ tval.tv_sec = millisec / 1000;
+ tval.tv_usec = (millisec % 1000) * 1000;
+ setsockopt(socket->m_fd, SOL_SOCKET, SO_SNDTIMEO, &tval, sizeof(tval));
+ setsockopt(socket->m_fd, SOL_SOCKET, SO_RCVTIMEO, &tval, sizeof(tval));
+ }
+#endif
+}
+
/*
GSocket_GetError() returns the last error occured on the socket stream.
*/
Server socket -> a client request a connection
LOST: the connection is lost
- SetFallback accepts a combination of these flags so a same callback can
+ SetCallback 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
For example: INPUT -> GSocket_Read()
CONNECTION -> GSocket_Accept()
*/
-void GSocket_SetFallback(GSocket *socket, GSocketEventFlags event,
- GSocketFallback fallback, char *cdata)
+void GSocket_SetCallback(GSocket *socket, GSocketEventFlags event,
+ GSocketCallback fallback, char *cdata)
{
int count;
assert (socket != NULL);
for (count=0;count<GSOCK_MAX_EVENT;count++) {
+ /* We test each flag and, if it is enabled, we enable the corresponding
+ event */
if ((event & (1 << count)) != 0) {
socket->m_fbacks[count] = fallback;
socket->m_data[count] = cdata;
-
- _GSocket_Install_Fallback(socket, count);
_GSocket_Enable(socket, count);
}
}
}
/*
- UnsetFallback will disables all fallbacks specified by "event".
+ UnsetCallback will disables all fallbacks specified by "event".
NOTE: event may be a combination of flags
*/
-void GSocket_UnsetFallback(GSocket *socket, GSocketEventFlags event)
+void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags event)
{
int count = 0;
if ((event & (1 << count)) != 0) {
_GSocket_Disable(socket, count);
socket->m_fbacks[count] = NULL;
- _GSocket_Uninstall_Fallback(socket, count);
}
}
}
{
socket->m_iocalls[event] = TRUE;
if (socket->m_fbacks[event])
- _GSocket_Install_Fallback(socket, event);
+ _GSocket_Install_Callback(socket, event);
}
void _GSocket_Disable(GSocket *socket, GSocketEvent event)
{
socket->m_iocalls[event] = FALSE;
if (socket->m_fbacks[event])
- _GSocket_Uninstall_Fallback(socket, event);
+ _GSocket_Uninstall_Callback(socket, event);
}
int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size)
MASK_SIGNAL();
ret = recv(socket->m_fd, buffer, size, 0);
UNMASK_SIGNAL();
- if (ret == -1) {
+ if (ret == -1 && errno != EAGAIN) {
socket->m_error = GSOCK_IOERR;
return -1;
}
+ if (errno == EAGAIN) {
+ socket->m_error = GSOCK_TRYAGAIN;
+ return -1;
+ }
return ret;
}
MASK_SIGNAL();
ret = recvfrom(socket->m_fd, buffer, size, 0, &from, &fromlen);
UNMASK_SIGNAL();
- if (ret == -1) {
+ if (ret == -1 && errno != EAGAIN) {
socket->m_error = GSOCK_IOERR;
return -1;
}
+ if (errno == EAGAIN) {
+ socket->m_error = GSOCK_TRYAGAIN;
+ return -1;
+ }
- if (!socket->m_peer)
+ /* Translate a system address into a GSocket address */
+ if (!socket->m_peer) {
socket->m_peer = GAddress_new();
- _GAddress_translate_from(socket->m_peer, &from, fromlen);
+ if (!socket->m_peer) {
+ socket->m_error = GSOCK_MEMERR;
+ return -1;
+ }
+ }
+ if (!_GAddress_translate_from(socket->m_peer, &from, fromlen)) {
+ socket->m_error = GSOCK_MEMERR;
+ return -1;
+ }
return ret;
}
MASK_SIGNAL();
ret = send(socket->m_fd, buffer, size, 0);
UNMASK_SIGNAL();
- if (ret == -1) {
+ if (ret == -1 && errno != EAGAIN) {
socket->m_error = GSOCK_IOERR;
return -1;
}
+ if (errno == EAGAIN) {
+ socket->m_error = GSOCK_TRYAGAIN;
+ return -1;
+ }
return ret;
}
return -1;
}
- _GAddress_translate_to(socket->m_peer, &addr, &len);
+ if (!_GAddress_translate_to(socket->m_peer, &addr, &len)) {
+ socket->m_error = GSOCK_MEMERR;
+ return -1;
+ }
MASK_SIGNAL();
ret = sendto(socket->m_fd, buffer, size, 0, addr, len);
UNMASK_SIGNAL();
- if (ret == -1) {
+
+ /* Frees memory allocated from _GAddress_translate_to */
+ free(addr);
+
+ if (ret == -1 && errno != EAGAIN) {
socket->m_error = GSOCK_IOERR;
return -1;
}
-
- free(addr);
+ if (errno == EAGAIN) {
+ socket->m_error = GSOCK_TRYAGAIN;
+ return -1;
+ }
return ret;
}
* -------------------------------------------------------------------------
*/
+/* CHECK_ADDRESS verifies that the current family is either GSOCK_NOFAMILY or
+ * GSOCK_*family*. In case it is GSOCK_NOFAMILY, it initializes address to be
+ * a GSOCK_*family*. In other cases, it returns GSOCK_INVADDR.
+ */
#define CHECK_ADDRESS(address, family, retval) \
{ \
if (address->m_family == GSOCK_NOFAMILY) \
- _GAddress_Init_##family(address); \
+ if (!_GAddress_Init_##family(address)) {\
+ address->m_error = GSOCK_MEMERR; \
+ return retval; \
+ }\
if (address->m_family != GSOCK_##family) {\
address->m_error = GSOCK_INVADDR; \
return retval; \
address = (GAddress *)malloc(sizeof(GAddress));
+ if (address == NULL)
+ return NULL;
+
address->m_family = GSOCK_NOFAMILY;
address->m_addr = NULL;
address->m_len = 0;
assert(address != NULL);
addr2 = (GAddress *)malloc(sizeof(GAddress));
+
+ if (addr2 == NULL)
+ return NULL;
+
memcpy(addr2, address, sizeof(GAddress));
if (address->m_addr) {
addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
+ if (addr2->m_addr == NULL) {
+ free(addr2);
+ return NULL;
+ }
memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
}
return address->m_family;
}
-void _GAddress_translate_from(GAddress *address, struct sockaddr *addr, int len){
+bool _GAddress_translate_from(GAddress *address, struct sockaddr *addr, int len){
address->m_realfamily = addr->sa_family;
switch (addr->sa_family) {
case AF_INET:
address->m_len = len;
address->m_addr = (struct sockaddr *)malloc(len);
+ if (address->m_addr == NULL)
+ return FALSE;
memcpy(address->m_addr, addr, len);
+
+ return TRUE;
}
-void _GAddress_translate_to(GAddress *address,
+bool _GAddress_translate_to(GAddress *address,
struct sockaddr **addr, int *len)
{
if (!address->m_addr) {
*len = address->m_len;
*addr = (struct sockaddr *)malloc(address->m_len);
+ if (*addr == NULL)
+ return FALSE;
+
memcpy(*addr, address->m_addr, address->m_len);
+ return TRUE;
}
/*
* -------------------------------------------------------------------------
*/
-void _GAddress_Init_INET(GAddress *address)
+bool _GAddress_Init_INET(GAddress *address)
{
+ address->m_addr = (struct sockaddr *)malloc(sizeof(struct sockaddr_in));
+ if (address->m_addr == NULL)
+ return FALSE;
+
address->m_len = sizeof(struct sockaddr_in);
- address->m_addr = (struct sockaddr *)malloc(address->m_len);
+
address->m_family = GSOCK_INET;
address->m_realfamily = PF_INET;
((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
+
+ return TRUE;
}
GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
- /* only name for the moment */
+ /* If it is a numeric host name, convert it now */
if (inet_aton(hostname, addr) == 0) {
struct in_addr *array_addr;
+ /* It is a real name, we solve it */
if ((he = gethostbyname(hostname)) == NULL) {
address->m_error = GSOCK_NOHOST;
return GSOCK_NOHOST;
return GSOCK_INVOP;
}
- /* TODO: TCP or UDP */
se = getservbyname(port, protocol);
if (!se) {
if (isdigit(port[0])) {
* -------------------------------------------------------------------------
*/
-void _GAddress_Init_UNIX(GAddress *address)
+bool _GAddress_Init_UNIX(GAddress *address)
{
- address->m_len = sizeof(struct sockaddr_un);
address->m_addr = (struct sockaddr *)malloc(address->m_len);
+ if (address->m_addr == NULL)
+ return FALSE;
+
+ address->m_len = sizeof(struct sockaddr_un);
address->m_family = GSOCK_UNIX;
address->m_realfamily = PF_UNIX;
((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
+
+ return TRUE;
}
GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
return GSOCK_NOERROR;
}
+
+#endif // wxUSE_SOCKETS
projects / wxWidgets.git / blobdiff