* *
* C Implementation File *
* *
- * Copyright (C) 2003-2005 Free Software Foundation, Inc. *
+ * Copyright (C) 2003-2009, Free Software Foundation, Inc. *
* *
* GNAT is free software; you can redistribute it and/or modify it under *
* terms of the GNU General Public License as published by the Free Soft- *
- * ware Foundation; either version 2, or (at your option) any later ver- *
+ * ware Foundation; either version 3, or (at your option) any later ver- *
* sion. GNAT is distributed in the hope that it will be useful, but WITH- *
* OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
- * for more details. You should have received a copy of the GNU General *
- * Public License distributed with GNAT; see file COPYING. If not, write *
- * to the Free Software Foundation, 51 Franklin Street, Fifth Floor, *
- * Boston, MA 02110-1301, USA. *
+ * or FITNESS FOR A PARTICULAR PURPOSE. *
* *
- * As a special exception, if you link this file with other files to *
- * produce an executable, this file does not by itself cause the resulting *
- * executable to be covered by the GNU General Public License. This except- *
- * ion does not however invalidate any other reasons why the executable *
- * file might be covered by the GNU Public License. *
+ * As a special exception under Section 7 of GPL version 3, you are granted *
+ * additional permissions described in the GCC Runtime Library Exception, *
+ * version 3.1, as published by the Free Software Foundation. *
+ * *
+ * You should have received a copy of the GNU General Public License and *
+ * a copy of the GCC Runtime Library Exception along with this program; *
+ * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
+ * <http://www.gnu.org/licenses/>. *
* *
* GNAT was originally developed by the GNAT team at New York University. *
* Extensive contributions were provided by Ada Core Technologies Inc. *
/* This file provides a portable binding to the sockets API */
#include "gsocket.h"
+#ifdef VMS
+/*
+ * For VMS, gsocket.h can't include sockets-related DEC C header files
+ * when building the runtime (because these files are in DEC C archives,
+ * not accessable to GCC). So, we generate a separate header file along
+ * with s-oscons.ads and include it here.
+ */
+# include "s-oscons.h"
+#endif
+
+#if defined(HAVE_SOCKETS)
+
/* Include all the necessary system-specific headers and define the
- necessary macros (shared with gen-soccon). */
+ * necessary macros (shared with gen-oscons).
+ */
+
+#if !defined(SO_NOSIGPIPE) && !defined (MSG_NOSIGNAL)
+#include <signal.h>
+#endif
+/* Required if we will be calling signal() in __gnat_disable_all_sigpipes() */
#include "raise.h"
/* Required for __gnat_malloc() */
/* Required for memcpy() */
extern void __gnat_disable_sigpipe (int fd);
-extern void __gnat_free_socket_set (fd_set *);
+extern void __gnat_disable_all_sigpipes (void);
+extern int __gnat_create_signalling_fds (int *fds);
+extern int __gnat_read_signalling_fd (int rsig);
+extern int __gnat_write_signalling_fd (int wsig);
+extern void __gnat_close_signalling_fd (int sig);
extern void __gnat_last_socket_in_set (fd_set *, int *);
extern void __gnat_get_socket_from_set (fd_set *, int *, int *);
extern void __gnat_insert_socket_in_set (fd_set *, int);
extern int __gnat_is_socket_in_set (fd_set *, int);
extern fd_set *__gnat_new_socket_set (fd_set *);
extern void __gnat_remove_socket_from_set (fd_set *, int);
-extern int __gnat_get_h_errno (void);
+extern void __gnat_reset_socket_set (fd_set *);
+extern int __gnat_get_h_errno (void);
+extern int __gnat_socket_ioctl (int, int, int *);
+#if defined (__vxworks) || defined (_WIN32)
+extern int __gnat_inet_pton (int, const char *, void *);
+#endif
\f
/* Disable the sending of SIGPIPE for writes on a broken stream */
#endif
}
-/* Free socket set. */
-
void
-__gnat_free_socket_set (fd_set *set)
+__gnat_disable_all_sigpipes (void)
+{
+#if !defined(SO_NOSIGPIPE) && !defined(MSG_NOSIGNAL) && defined(SIGPIPE)
+ (void) signal (SIGPIPE, SIG_IGN);
+#endif
+}
+\f
+#if defined (_WIN32) || defined (__vxworks) || defined (VMS)
+/*
+ * Signalling FDs operations are implemented in Ada for these platforms
+ * (see subunit GNAT.Sockets.Thin.Signalling_Fds).
+ */
+#else
+/*
+ * Create a pair of connected file descriptors fds[0] and fds[1] used for
+ * signalling by a Selector object. fds[0] is the read end, and fds[1] the
+ * write end.
+ */
+int
+__gnat_create_signalling_fds (int *fds) {
+ return pipe (fds);
+}
+\f
+/*
+ * Read one byte of data from rsig, the read end of a pair of signalling fds
+ * created by __gnat_create_signalling_fds.
+ */
+int
+__gnat_read_signalling_fd (int rsig) {
+ char c;
+ return read (rsig, &c, 1);
+}
+\f
+/*
+ * Write one byte of data to wsig, the write end of a pair of signalling fds
+ * created by __gnat_create_signalling_fds.
+ */
+int
+__gnat_write_signalling_fd (int wsig) {
+ char c = 0;
+ return write (wsig, &c, 1);
+}
+\f
+/*
+ * Close one end of a pair of signalling fds
+ */
+void
+__gnat_close_signalling_fd (int sig) {
+ (void) close (sig);
+}
+#endif
+\f
+/*
+ * GetXXXbyYYY wrappers
+ * These functions are used by the default implementation of g-socthi,
+ * and also by the Windows version.
+ *
+ * They can be used for any platform that either provides an intrinsically
+ * task safe implementation of getXXXbyYYY, or a reentrant variant
+ * getXXXbyYYY_r. Otherwise, a task safe wrapper, including proper mutual
+ * exclusion if appropriate, must be implemented in the target specific
+ * version of g-socthi.
+ */
+
+#ifdef HAVE_THREAD_SAFE_GETxxxBYyyy
+int
+__gnat_safe_gethostbyname (const char *name,
+ struct hostent *ret, char *buf, size_t buflen,
+ int *h_errnop)
{
- __gnat_free (set);
+ struct hostent *rh;
+ rh = gethostbyname (name);
+ if (rh == NULL) {
+ *h_errnop = h_errno;
+ return -1;
+ }
+ *ret = *rh;
+ *h_errnop = 0;
+ return 0;
+}
+
+int
+__gnat_safe_gethostbyaddr (const char *addr, int len, int type,
+ struct hostent *ret, char *buf, size_t buflen,
+ int *h_errnop)
+{
+ struct hostent *rh;
+ rh = gethostbyaddr (addr, len, type);
+ if (rh == NULL) {
+ *h_errnop = h_errno;
+ return -1;
+ }
+ *ret = *rh;
+ *h_errnop = 0;
+ return 0;
+}
+
+int
+__gnat_safe_getservbyname (const char *name, const char *proto,
+ struct servent *ret, char *buf, size_t buflen)
+{
+ struct servent *rh;
+ rh = getservbyname (name, proto);
+ if (rh == NULL)
+ return -1;
+ *ret = *rh;
+ return 0;
+}
+
+int
+__gnat_safe_getservbyport (int port, const char *proto,
+ struct servent *ret, char *buf, size_t buflen)
+{
+ struct servent *rh;
+ rh = getservbyport (port, proto);
+ if (rh == NULL)
+ return -1;
+ *ret = *rh;
+ return 0;
+}
+#elif HAVE_GETxxxBYyyy_R
+int
+__gnat_safe_gethostbyname (const char *name,
+ struct hostent *ret, char *buf, size_t buflen,
+ int *h_errnop)
+{
+ struct hostent *rh;
+ int ri;
+
+#if defined(__linux__) || defined(__GLIBC__)
+ (void) gethostbyname_r (name, ret, buf, buflen, &rh, h_errnop);
+#else
+ rh = gethostbyname_r (name, ret, buf, buflen, h_errnop);
+#endif
+ ri = (rh == NULL) ? -1 : 0;
+ return ri;
+}
+
+int
+__gnat_safe_gethostbyaddr (const char *addr, int len, int type,
+ struct hostent *ret, char *buf, size_t buflen,
+ int *h_errnop)
+{
+ struct hostent *rh;
+ int ri;
+
+#if defined(__linux__) || defined(__GLIBC__)
+ (void) gethostbyaddr_r (addr, len, type, ret, buf, buflen, &rh, h_errnop);
+#else
+ rh = gethostbyaddr_r (addr, len, type, ret, buf, buflen, h_errnop);
+#endif
+ ri = (rh == NULL) ? -1 : 0;
+ return ri;
+}
+
+int
+__gnat_safe_getservbyname (const char *name, const char *proto,
+ struct servent *ret, char *buf, size_t buflen)
+{
+ struct servent *rh;
+ int ri;
+
+#if defined(__linux__) || defined(__GLIBC__) || defined(__rtems__)
+ (void) getservbyname_r (name, proto, ret, buf, buflen, &rh);
+#else
+ rh = getservbyname_r (name, proto, ret, buf, buflen);
+#endif
+ ri = (rh == NULL) ? -1 : 0;
+ return ri;
}
+int
+__gnat_safe_getservbyport (int port, const char *proto,
+ struct servent *ret, char *buf, size_t buflen)
+{
+ struct servent *rh;
+ int ri;
+
+#if defined(__linux__) || defined(__GLIBC__) || defined(__rtems__)
+ (void) getservbyport_r (port, proto, ret, buf, buflen, &rh);
+#else
+ rh = getservbyport_r (port, proto, ret, buf, buflen);
+#endif
+ ri = (rh == NULL) ? -1 : 0;
+ return ri;
+}
+#endif
+\f
/* Find the largest socket in the socket set SET. This is needed for
`select'. LAST is the maximum value for the largest socket. This hint is
used to avoid scanning very large socket sets. On return, LAST is the
int l;
l = -1;
-#ifdef WINNT
+#ifdef _WIN32
/* More efficient method for NT. */
for (s = 0; s < set->fd_count; s++)
if ((int) set->fd_array[s] > l)
return FD_ISSET (socket, set);
}
-/* Allocate a new socket set and set it as empty. */
-
-fd_set *
-__gnat_new_socket_set (fd_set *set)
-{
- fd_set *new;
-
- new = (fd_set *) __gnat_malloc (sizeof (fd_set));
-
- if (set)
- memcpy (new, set, sizeof (fd_set));
- else
- FD_ZERO (new);
-
- return new;
-}
-
/* Remove SOCKET from the socket set SET. */
void
FD_CLR (socket, set);
}
+/* Reset SET */
+void
+__gnat_reset_socket_set (fd_set *set)
+{
+ FD_ZERO (set);
+}
+
/* Get the value of the last host error */
int
case 0:
return 0;
- case S_resolvLib_HOST_NOT_FOUND:
+#ifdef S_hostLib_HOST_NOT_FOUND
+ case S_hostLib_HOST_NOT_FOUND:
+#endif
case S_hostLib_UNKNOWN_HOST:
return HOST_NOT_FOUND;
- case S_resolvLib_TRY_AGAIN:
+#ifdef S_hostLib_TRY_AGAIN
+ case S_hostLib_TRY_AGAIN:
return TRY_AGAIN;
+#endif
- case S_resolvLib_NO_RECOVERY:
- case S_resolvLib_BUFFER_2_SMALL:
- case S_resolvLib_INVALID_PARAMETER:
- case S_resolvLib_INVALID_ADDRESS:
+#ifdef S_hostLib_NO_RECOVERY
+ case S_hostLib_NO_RECOVERY:
+#endif
+#ifdef S_hostLib_NETDB_INTERNAL
+ case S_hostLib_NETDB_INTERNAL:
+#endif
case S_hostLib_INVALID_PARAMETER:
return NO_RECOVERY;
- case S_resolvLib_NO_DATA:
- return NO_DATA;
-
default:
return -1;
}
-#elif defined(VMS)
- return errno;
-#elif defined(__rtems__)
+
+#elif defined (VMS)
+ /* h_errno is defined as follows in OpenVMS' version of <netdb.h>.
+ * However this header file is not available when building the GNAT
+ * runtime library using GCC, so we are hardcoding the definition
+ * directly. Note that the returned address is thread-specific.
+ */
+ extern int *decc$h_errno_get_addr ();
+ return *decc$h_errno_get_addr ();
+
+#elif defined (__rtems__)
/* At this stage in the tool build, no networking .h files are available.
- Newlib does not provide networking .h files and RTEMS is not built yet.
- So we need to explicitly extern h_errno to access it.
+ * Newlib does not provide networking .h files and RTEMS is not built yet.
+ * So we need to explicitly extern h_errno to access it.
*/
extern int h_errno;
return h_errno;
+
#else
return h_errno;
#endif
}
+
+/* Wrapper for ioctl(2), which is a variadic function */
+
+int
+__gnat_socket_ioctl (int fd, int req, int *arg) {
+#if defined (_WIN32)
+ return ioctlsocket (fd, req, arg);
+#else
+ return ioctl (fd, req, arg);
+#endif
+}
+
+#ifndef HAVE_INET_PTON
+
+#ifdef VMS
+# define in_addr_t int
+# define inet_addr decc$inet_addr
+#endif
+
+int
+__gnat_inet_pton (int af, const char *src, void *dst) {
+ switch (af) {
+#if defined (_WIN32) && defined (AF_INET6)
+ case AF_INET6:
+#endif
+ case AF_INET:
+ break;
+ default:
+ errno = EAFNOSUPPORT;
+ return -1;
+ }
+
+#if defined (__vxworks)
+ return (inet_aton (src, dst) == OK);
+
+#elif defined (_WIN32)
+ struct sockaddr_storage ss;
+ int sslen = sizeof ss;
+ int rc;
+
+ ss.ss_family = af;
+ rc = WSAStringToAddressA (src, af, NULL, (struct sockaddr *)&ss, &sslen);
+ if (rc == 0) {
+ switch (af) {
+ case AF_INET:
+ *(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr;
+ break;
+#ifdef AF_INET6
+ case AF_INET6:
+ *(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr;
+ break;
+#endif
+ }
+ }
+ return (rc == 0);
+
+#elif defined (__hpux__) || defined (VMS)
+ in_addr_t addr;
+ int rc = -1;
+
+ if (src == NULL || dst == NULL) {
+ errno = EINVAL;
+
+ } else if (!strcmp (src, "255.255.255.255")) {
+ addr = 0xffffffff;
+ rc = 1;
+
+ } else {
+ addr = inet_addr (src);
+ rc = (addr != 0xffffffff);
+ }
+ if (rc == 1) {
+ *(in_addr_t *)dst = addr;
+ }
+ return rc;
+#endif
+}
+#endif
+
+#else
+# warning Sockets are not supported on this platform
+#endif /* defined(HAVE_SOCKETS) */