-/*
- * INADDR_BROADCAST is identical to INADDR_NONE which is not defined
- * on all systems. INADDR_BROADCAST should be fine to indicate an error.
- */
-#ifndef INADDR_NONE
-#define INADDR_NONE INADDR_BROADCAST
-#endif
-
-#if defined(__VISAGECPP__) || defined(__WATCOMC__)
-
- #define MASK_SIGNAL() {
- #define UNMASK_SIGNAL() }
-
-#else
- extern "C" { typedef void (*wxSigHandler)(int); }
-
- #define MASK_SIGNAL() \
- { \
- wxSigHandler old_handler = signal(SIGPIPE, SIG_IGN);
-
- #define UNMASK_SIGNAL() \
- signal(SIGPIPE, old_handler); \
- }
-
-#endif
-
-/* If a SIGPIPE is issued by a socket call on a remotely closed socket,
- the program will "crash" unless it explicitly handles the SIGPIPE.
- By using MSG_NOSIGNAL, the SIGPIPE is suppressed. Later, we will
- use SO_NOSIGPIPE (if available), the BSD equivalent. */
-#ifdef MSG_NOSIGNAL
-# define GSOCKET_MSG_NOSIGNAL MSG_NOSIGNAL
-#else /* MSG_NOSIGNAL not available (FreeBSD including OS X) */
-# define GSOCKET_MSG_NOSIGNAL 0
-#endif /* MSG_NOSIGNAL */
-
-#if wxUSE_THREADS && (defined(HAVE_GETHOSTBYNAME) || defined(HAVE_GETSERVBYNAME))
-# include "wx/thread.h"
-#endif
-
-#if defined(HAVE_GETHOSTBYNAME)
-static struct hostent * deepCopyHostent(struct hostent *h,
- 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)
- {
- *err = ENOMEM;
- return NULL;
- }
- memcpy(buffer, h->h_name, len);
- buffer[len] = '\0';
- h->h_name = buffer;
-
- /* track position in the buffer */
- int pos = len + 1;
-
- /* reuse len to store address length */
- len = h->h_length;
-
- /* 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 + 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)
-
-{
- struct hostent *he = NULL;
- *err = 0;
-#if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
- if (gethostbyname_r(hostname, h, (char*)buffer, size, &he, err))
- he = NULL;
-#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
- he = gethostbyname_r(hostname, h, (char*)buffer, size, err);
-#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
- if (gethostbyname_r(hostname, h, (struct hostent_data*) buffer))
- {
- he = NULL;
- *err = h_errno;
- }
- else
- he = h;
-#elif defined(HAVE_GETHOSTBYNAME)
-#if wxUSE_THREADS
- wxMutexLocker locker(nameLock);
-#endif
- he = gethostbyname(hostname);
- if (!he)
- *err = h_errno;
- else
- he = deepCopyHostent(h, he, (char*)buffer, size, err);
-#endif
- 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)
-{
- struct hostent *he = NULL;
- *err = 0;
-#if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
- if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
- (char*)buffer, size, &he, err))
- he = NULL;
-#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
- he = gethostbyaddr_r(addr_buf, buf_size, proto, h, (char*)buffer, size, err);
-#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
- if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
- (struct hostent_data*) buffer))
- {
- he = NULL;
- *err = h_errno;
- }
- else
- he = h;
-#elif defined(HAVE_GETHOSTBYNAME)
-#if wxUSE_THREADS
- wxMutexLocker locker(addrLock);
-#endif
- he = gethostbyaddr(addr_buf, buf_size, proto);
- if (!he)
- *err = h_errno;
- else
- he = deepCopyHostent(h, he, (char*)buffer, size, err);
-#endif
- return he;
-}
-
-#if defined(HAVE_GETSERVBYNAME)
-static struct servent * deepCopyServent(struct servent *s,
- 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)
- {
- return NULL;
- }
- memcpy(buffer, s->s_name, len);
- buffer[len] = '\0';
- s->s_name = buffer;
-
- /* track position in the buffer */
- int pos = len + 1;
-
- /* copy protocol */
- len = strlen(s->s_proto);
- 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)
-{
- struct servent *se = NULL;
-#if defined(HAVE_FUNC_GETSERVBYNAME_R_6)
- if (getservbyname_r(port, protocol, serv, (char*)buffer, size, &se))
- se = NULL;
-#elif defined(HAVE_FUNC_GETSERVBYNAME_R_5)
- se = getservbyname_r(port, protocol, serv, (char*)buffer, size);
-#elif defined(HAVE_FUNC_GETSERVBYNAME_R_4)
- if (getservbyname_r(port, protocol, serv, (struct servent_data*) buffer))
- se = NULL;
- else
- se = serv;
-#elif defined(HAVE_GETSERVBYNAME)
-#if wxUSE_THREADS
- wxMutexLocker locker(servLock);
-#endif
- se = getservbyname(port, protocol);
- if (se)
- se = deepCopyServent(serv, se, (char*)buffer, size);
-#endif
- return se;
-}
-
-/* debugging helpers */
-#ifdef __GSOCKET_DEBUG__
-# define SOCKET_DEBUG(args) printf args
-#else
-# define SOCKET_DEBUG(args)
-#endif /* __GSOCKET_DEBUG__ */
projects / wxWidgets.git / blobdiff