#include <netdb.h>
#include <sys/ioctl.h>
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+
#ifdef __VMS__
#include <socket.h>
struct sockaddr_un
const struct hostent *he,
char *buffer, int size, int *err)
{
+ /* copy old structure */
memcpy(h, he, sizeof(struct hostent));
+
+ /* copy name */
int len = strlen(h->h_name);
if (len > size)
- len = size - 1;
+ {
+ *err = ENOMEM;
+ return NULL;
+ }
memcpy(buffer, h->h_name, len);
buffer[len] = '\0';
h->h_name = buffer;
- buffer += len + 1;
- size -= len + 1;
+
+ /* track position in the buffer */
+ int pos = len + 1;
+
+ /* reuse len to store address length */
len = h->h_length;
- for (char **p = h->h_addr_list; *p != 0; p++) {
- if (size < len){
+
+ /* ensure pointer alignment */
+ unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
+ if(misalign < sizeof(char *))
+ pos += misalign;
+
+ /* leave space for pointer list */
+ char **p = h->h_addr_list, **q;
+ char **h_addr_list = (char **)(buffer + pos);
+ while(*(p++) != 0)
+ pos += sizeof(char *);
+
+ /* copy addresses and fill new pointer list */
+ for (p = h->h_addr_list, q = h_addr_list; *p != 0; p++, q++)
+ {
+ if (size < pos + len)
+ {
+ *err = ENOMEM;
+ return NULL;
+ }
+ memcpy(buffer + pos, *p, len); /* copy content */
+ *q = buffer + pos; /* set copied pointer to copied content */
+ pos += len;
+ }
+ *++q = 0; /* null terminate the pointer list */
+ h->h_addr_list = h_addr_list; /* copy pointer to pointers */
+
+ /* ensure word alignment of pointers */
+ misalign = sizeof(char *) - pos%sizeof(char *);
+ if(misalign < sizeof(char *))
+ pos += misalign;
+
+ /* leave space for pointer list */
+ p = h->h_aliases;
+ char **h_aliases = (char **)(buffer + pos);
+ while(*(p++) != 0)
+ pos += sizeof(char *);
+
+ /* copy aliases and fill new pointer list */
+ for (p = h->h_aliases, q = h_aliases; *p != 0; p++, q++)
+ {
+ len = strlen(*p);
+ if (size <= pos + len)
+ {
*err = ENOMEM;
return NULL;
}
- memcpy(buffer, *p, len);
- *p = buffer;
- buffer += len;
- size -= len;
- }
- for (char **q = h->h_aliases; size > 0 && *q != 0; q++){
- len = strlen(*q);
- if (len > size)
- len = size - 1;
- memcpy(buffer, *q, len);
- buffer[len] = '\0';
- *q = buffer;
- buffer += len + 1;
- size -= len + 1;
+ memcpy(buffer + pos, *p, len); /* copy content */
+ buffer[pos + len] = '\0';
+ *q = buffer + pos; /* set copied pointer to copied content */
+ pos += len + 1;
}
+ *++q = 0; /* null terminate the pointer list */
+ h->h_aliases = h_aliases; /* copy pointer to pointers */
+
return h;
}
#endif
+#if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
+static wxMutex nameLock;
+#endif
struct hostent * wxGethostbyname_r(const char *hostname, struct hostent *h,
void *buffer, int size, int *err)
he = h;
#elif defined(HAVE_GETHOSTBYNAME)
#if wxUSE_THREADS
- static wxMutex nameLock;
wxMutexLocker locker(nameLock);
#endif
he = gethostbyname(hostname);
return he;
}
+#if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
+static wxMutex addrLock;
+#endif
struct hostent * wxGethostbyaddr_r(const char *addr_buf, int buf_size,
int proto, struct hostent *h,
void *buffer, int size, int *err)
he = h;
#elif defined(HAVE_GETHOSTBYNAME)
#if wxUSE_THREADS
- static wxMutex addrLock;
wxMutexLocker locker(addrLock);
#endif
he = gethostbyaddr(addr_buf, buf_size, proto);
const struct servent *se,
char *buffer, int size)
{
+ /* copy plain old structure */
memcpy(s, se, sizeof(struct servent));
+
+ /* copy name */
int len = strlen(s->s_name);
- if (len > size)
- len = size - 1;
+ if (len >= size)
+ {
+ return NULL;
+ }
memcpy(buffer, s->s_name, len);
buffer[len] = '\0';
s->s_name = buffer;
- buffer += len + 1;
- size -= len + 1;
+
+ /* track position in the buffer */
+ int pos = len + 1;
+
+ /* copy protocol */
len = strlen(s->s_proto);
- if (len > size)
- len = size - 1;
- memcpy(buffer, s->s_proto, len);
- buffer[len] = '\0';
- s->s_proto = buffer;
- buffer += len + 1;
- size -= len + 1;
- for (char **q = s->s_aliases; size > 0 && *q != 0; q++){
- len = strlen(*q);
- if (len > size)
- len = size - 1;
- memcpy(buffer, *q, len);
- buffer[len] = '\0';
- *q = buffer;
- buffer += len + 1;
- size -= len + 1;
+ if (pos + len >= size)
+ {
+ return NULL;
}
+ memcpy(buffer + pos, s->s_proto, len);
+ buffer[pos + len] = '\0';
+ s->s_proto = buffer + pos;
+
+ /* track position in the buffer */
+ pos += len + 1;
+
+ /* ensure pointer alignment */
+ unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
+ if(misalign < sizeof(char *))
+ pos += misalign;
+
+ /* leave space for pointer list */
+ char **p = s->s_aliases, **q;
+ char **s_aliases = (char **)(buffer + pos);
+ while(*(p++) != 0)
+ pos += sizeof(char *);
+
+ /* copy addresses and fill new pointer list */
+ for (p = s->s_aliases, q = s_aliases; *p != 0; p++, q++){
+ len = strlen(*p);
+ if (size <= pos + len)
+ {
+ return NULL;
+ }
+ memcpy(buffer + pos, *p, len); /* copy content */
+ buffer[pos + len] = '\0';
+ *q = buffer + pos; /* set copied pointer to copied content */
+ pos += len + 1;
+ }
+ *++q = 0; /* null terminate the pointer list */
+ s->s_aliases = s_aliases; /* copy pointer to pointers */
return s;
}
#endif
+#if defined(HAVE_GETSERVBYNAME) && wxUSE_THREADS
+static wxMutex servLock;
+#endif
struct servent *wxGetservbyname_r(const char *port, const char *protocol,
struct servent *serv, void *buffer, int size)
{
se = serv;
#elif defined(HAVE_GETSERVBYNAME)
#if wxUSE_THREADS
- static wxMutex servLock;
wxMutexLocker locker(servLock);
#endif
se = getservbyname(port, protocol);
state after being previously closed.
*/
if (m_reusable)
+ {
setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(u_long));
+#ifdef SO_REUSEPORT
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(u_long));
+#endif
+ }
/* Bind to the local address,
* retrieve the actual address bound,
ioctl(m_fd, FIONBIO, &arg);
#endif
+ // If the reuse flag is set, use the applicable socket reuse flags(s)
+ if (m_reusable)
+ {
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(u_long));
+#ifdef SO_REUSEPORT
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(u_long));
+#endif
+ }
+
+ // If a local address has been set, then we need to bind to it before calling connect
+ if (m_local && m_local->m_addr)
+ {
+ bind(m_fd, m_local->m_addr, m_local->m_len);
+ }
+
/* Connect it to the peer address, with a timeout (see below) */
ret = connect(m_fd, m_peer->m_addr, m_peer->m_len);
* socket only if errno does _not_ indicate that there may be more data to read.
*/
if (ret == 0)
+ {
m_error = GSOCK_IOERR;
+ m_detected = GSOCK_LOST_FLAG;
+ Close();
+ // Signal an error for return
+ return -1;
+ }
else if (ret == -1)
{
if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
return (result & flags);
}
+ /* Check for exceptions and errors */
+ if (wxFD_ISSET(m_fd, &exceptfds))
+ {
+ m_establishing = false;
+ m_detected = GSOCK_LOST_FLAG;
+
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+
/* Check for readability */
if (wxFD_ISSET(m_fd, &readfds))
{
- char c;
+ result |= GSOCK_INPUT_FLAG;
- int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
-
- if (num > 0)
- {
- result |= GSOCK_INPUT_FLAG;
- }
- else
+ if (m_server && m_stream)
{
- if (m_server && m_stream)
- {
- result |= GSOCK_CONNECTION_FLAG;
- m_detected |= GSOCK_CONNECTION_FLAG;
- }
- /* If recv returned zero, then the connection is lost, and errno is not set.
- * Otherwise, recv has returned an error (-1), in which case we have lost the
- * socket only if errno does _not_ indicate that there may be more data to read.
- */
- else if (num == 0 ||
- (errno != EWOULDBLOCK) && (errno != EAGAIN) && (errno != EINTR))
- {
- m_detected = GSOCK_LOST_FLAG;
- m_establishing = false;
-
- /* LOST event: Abort any further processing */
- return (GSOCK_LOST_FLAG & flags);
- }
+ /* This is a TCP server socket that detected a connection.
+ While the INPUT_FLAG is also set, it doesn't matter on
+ this kind of sockets, as we can only Accept() from them. */
+ result |= GSOCK_CONNECTION_FLAG;
+ m_detected |= GSOCK_CONNECTION_FLAG;
}
}
}
}
- /* Check for exceptions and errors (is this useful in Unices?) */
- if (wxFD_ISSET(m_fd, &exceptfds))
- {
- m_establishing = false;
- m_detected = GSOCK_LOST_FLAG;
-
- /* LOST event: Abort any further processing */
- return (GSOCK_LOST_FLAG & flags);
- }
-
return (result & flags);
}
projects / wxWidgets.git / blobdiff