-/* "socket.c" internet socket support for client/server in SCM
- * Copyright (C) 1995,1996 Free Software Foundation, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT 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
- * along with this software; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
- *
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice.
- */
-
-/* Written in 1994 by Aubrey Jaffer.
- * Thanks to Hallvard.Tretteberg@si.sintef.no for inspiration and discussion.
- * Rewritten by Gary Houston to be a closer interface to the C socket library.
- */
-\f
-
-#include <stdio.h>
-#include "_scm.h"
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <arpa/inet.h>
-
-\f
-
-#ifndef STDC_HEADERS
-int close P ((int fd));
-#endif /* STDC_HEADERS */
-
-#ifdef __STDC__
-extern int inet_aton (const char *, struct in_addr *);
-#else
-extern int inet_aton ();
-#endif
-
-SCM_PROC (s_sys_inet_aton, "inet-aton", 1, 0, 0, scm_sys_inet_aton);
-#ifdef __STDC__
-SCM
-scm_sys_inet_aton (SCM address)
-#else
-SCM
-scm_sys_inet_aton (address)
- SCM address;
-#endif
-{
- struct in_addr soka;
-
- SCM_ASSERT (SCM_NIMP (address) && SCM_ROSTRINGP (address), address, SCM_ARG1, s_sys_inet_aton);
- if (SCM_SUBSTRP (address))
- address = scm_makfromstr (SCM_ROCHARS (address), SCM_ROLENGTH (address), 0);
- if (inet_aton (SCM_ROCHARS (address), &soka) == 0)
- SCM_SYSERROR (s_sys_inet_aton);
- return scm_ulong2num (ntohl (soka.s_addr));
-}
-
-
-SCM_PROC (s_inet_ntoa, "inet-ntoa", 1, 0, 0, scm_inet_ntoa);
-#ifdef __STDC__
-SCM
-scm_inet_ntoa (SCM inetid)
-#else
-SCM
-scm_inet_ntoa (inetid)
- SCM inetid;
-#endif
-{
- struct in_addr addr;
- char *s;
- SCM answer;
- addr.s_addr = htonl (scm_num2ulong (inetid, (char *) SCM_ARG1, s_inet_ntoa));
- SCM_DEFER_INTS;
- s = inet_ntoa (addr);
- answer = scm_makfromstr (s, strlen (s), 0);
- SCM_ALLOW_INTS;
- return answer;
-}
-
-SCM_PROC (s_inet_netof, "inet-netof", 1, 0, 0, scm_inet_netof);
-#ifdef __STDC__
-SCM
-scm_inet_netof (SCM address)
-#else
-SCM
-scm_inet_netof (address)
- SCM address;
-#endif
-{
- struct in_addr addr;
- addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_inet_netof));
- return scm_ulong2num ((unsigned long) inet_netof (addr));
-}
-
-SCM_PROC (s_lnaof, "lnaof", 1, 0, 0, scm_lnaof);
-#ifdef __STDC__
-SCM
-scm_lnaof (SCM address)
-#else
-SCM
-scm_lnaof (address)
- SCM address;
-#endif
-{
- struct in_addr addr;
- addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_lnaof));
- return scm_ulong2num ((unsigned long) inet_lnaof (addr));
-}
-
-
-SCM_PROC (s_inet_makeaddr, "inet-makeaddr", 2, 0, 0, scm_inet_makeaddr);
-#ifdef __STDC__
-SCM
-scm_inet_makeaddr (SCM net, SCM lna)
-#else
-SCM
-scm_inet_makeaddr (net, lna)
- SCM net;
- SCM lna;
-#endif
-{
- struct in_addr addr;
- unsigned long netnum;
- unsigned long lnanum;
-
- netnum = scm_num2ulong (net, (char *) SCM_ARG1, s_inet_makeaddr);
- lnanum = scm_num2ulong (lna, (char *) SCM_ARG2, s_inet_makeaddr);
- addr = inet_makeaddr (netnum, lnanum);
- return scm_ulong2num (ntohl (addr.s_addr));
-}
-
-
-/* !!! Doesn't take address format.
- * Assumes hostent stream isn't reused.
- */
-
-SCM_PROC (s_sys_gethost, "gethost", 0, 1, 0, scm_sys_gethost);
-#ifdef __STDC__
-SCM
-scm_sys_gethost (SCM name)
-#else
-SCM
-scm_sys_gethost (name)
- SCM name;
-#endif
-{
- SCM ans = scm_make_vector (SCM_MAKINUM (5), SCM_UNSPECIFIED, SCM_BOOL_F);
- SCM *ve = SCM_VELTS (ans);
- SCM lst = SCM_EOL;
- struct hostent *entry;
- struct in_addr inad;
- char **argv;
- int i = 0;
-#ifdef HAVE_GETHOSTENT
- if (SCM_UNBNDP (name))
- {
- SCM_DEFER_INTS;
- entry = gethostent ();
- }
- else
-#endif
- if (SCM_NIMP (name) && SCM_STRINGP (name))
- {
- SCM_DEFER_INTS;
- entry = gethostbyname (SCM_CHARS (name));
- }
- else
- {
- inad.s_addr = htonl (scm_num2ulong (name, (char *) SCM_ARG1, s_sys_gethost));
- SCM_DEFER_INTS;
- entry = gethostbyaddr ((char *) &inad, sizeof (inad), AF_INET);
- }
- SCM_ALLOW_INTS;
- if (!entry)
- SCM_SYSERROR (s_sys_gethost);
- ve[0] = scm_makfromstr (entry->h_name, (scm_sizet) strlen (entry->h_name), 0);
- ve[1] = scm_makfromstrs (-1, entry->h_aliases);
- ve[2] = SCM_MAKINUM (entry->h_addrtype + 0L);
- ve[3] = SCM_MAKINUM (entry->h_length + 0L);
- if (sizeof (struct in_addr) != entry->h_length)
- {
- ve[4] = SCM_BOOL_F;
- return ans;
- }
- for (argv = entry->h_addr_list; argv[i]; i++);
- while (i--)
- {
- inad = *(struct in_addr *) argv[i];
- lst = scm_cons (scm_ulong2num (ntohl (inad.s_addr)), lst);
- }
- ve[4] = lst;
- return ans;
-}
-
-
-SCM_PROC (s_sys_getnet, "getnet", 0, 1, 0, scm_sys_getnet);
-#ifdef __STDC__
-SCM
-scm_sys_getnet (SCM name)
-#else
-SCM
-scm_sys_getnet (name)
- SCM name;
-#endif
-{
- SCM ans;
- SCM *ve;
- struct netent *entry;
-
- ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F);
- ve = SCM_VELTS (ans);
- if (SCM_UNBNDP (name))
- {
- SCM_DEFER_INTS;
- entry = getnetent ();
- }
- else if (SCM_NIMP (name) && SCM_STRINGP (name))
- {
- SCM_DEFER_INTS;
- entry = getnetbyname (SCM_CHARS (name));
- }
- else
- {
- unsigned long netnum;
- netnum = scm_num2ulong (name, (char *) SCM_ARG1, s_sys_getnet);
- SCM_DEFER_INTS;
- entry = getnetbyaddr (netnum, AF_INET);
- }
- SCM_ALLOW_INTS;
- if (!entry)
- SCM_SYSERROR (s_sys_getnet);
- ve[0] = scm_makfromstr (entry->n_name, (scm_sizet) strlen (entry->n_name), 0);
- ve[1] = scm_makfromstrs (-1, entry->n_aliases);
- ve[2] = SCM_MAKINUM (entry->n_addrtype + 0L);
- ve[3] = scm_ulong2num (entry->n_net + 0L);
- return ans;
-}
-
-SCM_PROC (s_sys_getproto, "getproto", 0, 1, 0, scm_sys_getproto);
-#ifdef __STDC__
-SCM
-scm_sys_getproto (SCM name)
-#else
-SCM
-scm_sys_getproto (name)
- SCM name;
-#endif
-{
- SCM ans;
- SCM *ve;
- struct protoent *entry;
-
- ans = scm_make_vector (SCM_MAKINUM (3), SCM_UNSPECIFIED, SCM_BOOL_F);
- ve = SCM_VELTS (ans);
- if (SCM_UNBNDP (name))
- {
- SCM_DEFER_INTS;
- entry = getprotoent ();
- }
- else if (SCM_NIMP (name) && SCM_STRINGP (name))
- {
- SCM_DEFER_INTS;
- entry = getprotobyname (SCM_CHARS (name));
- }
- else
- {
- unsigned long protonum;
- protonum = scm_num2ulong (name, (char *) SCM_ARG1, s_sys_getproto);
- SCM_DEFER_INTS;
- entry = getprotobynumber (protonum);
- }
- SCM_ALLOW_INTS;
- if (!entry)
- SCM_SYSERROR (s_sys_getproto);
- ve[0] = scm_makfromstr (entry->p_name, (scm_sizet) strlen (entry->p_name), 0);
- ve[1] = scm_makfromstrs (-1, entry->p_aliases);
- ve[2] = SCM_MAKINUM (entry->p_proto + 0L);
- return ans;
-}
-
-#ifdef __STDC__
-static SCM
-scm_return_entry (struct servent *entry)
-#else
-static SCM
-scm_return_entry (entry)
- struct servent *entry;
-#endif
-{
- SCM ans;
- SCM *ve;
-
- ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F);
- ve = SCM_VELTS (ans);
- ve[0] = scm_makfromstr (entry->s_name, (scm_sizet) strlen (entry->s_name), 0);
- ve[1] = scm_makfromstrs (-1, entry->s_aliases);
- ve[2] = SCM_MAKINUM (ntohs (entry->s_port) + 0L);
- ve[3] = scm_makfromstr (entry->s_proto, (scm_sizet) strlen (entry->s_proto), 0);
- SCM_ALLOW_INTS;
- return ans;
-}
-
-SCM_PROC (s_sys_getserv, "getserv", 0, 2, 0, scm_sys_getserv);
-#ifdef __STDC__
-SCM
-scm_sys_getserv (SCM name, SCM proto)
-#else
-SCM
-scm_sys_getserv (name, proto)
- SCM name;
- SCM proto;
-#endif
-{
- struct servent *entry;
- if (SCM_UNBNDP (name))
- {
- SCM_DEFER_INTS;
- entry = getservent ();
- if (!entry)
- SCM_SYSERROR (s_sys_getserv);
- return scm_return_entry (entry);
- }
- SCM_ASSERT (SCM_NIMP (proto) && SCM_STRINGP (proto), proto, SCM_ARG2, s_sys_getserv);
- if (SCM_NIMP (name) && SCM_STRINGP (name))
- {
- SCM_DEFER_INTS;
- entry = getservbyname (SCM_CHARS (name), SCM_CHARS (proto));
- }
- else
- {
- SCM_ASSERT (SCM_INUMP (name), name, SCM_ARG1, s_sys_getserv);
- SCM_DEFER_INTS;
- entry = getservbyport (SCM_INUM (name), SCM_CHARS (proto));
- }
- if (!entry)
- SCM_SYSERROR (s_sys_getserv);
- return scm_return_entry (entry);
-}
-
-SCM_PROC (s_sethost, "sethost", 0, 1, 0, scm_sethost);
-#ifdef __STDC__
-SCM
-scm_sethost (SCM arg)
-#else
-SCM
-scm_sethost (arg)
- SCM arg;
-#endif
-{
- if (SCM_UNBNDP (arg))
- endhostent ();
- else
- sethostent (SCM_NFALSEP (arg));
- return SCM_UNSPECIFIED;
-}
-
-SCM_PROC (s_setnet, "setnet", 0, 1, 0, scm_setnet);
-#ifdef __STDC__
-SCM
-scm_setnet (SCM arg)
-#else
-SCM
-scm_setnet (arg)
- SCM arg;
-#endif
-{
- if (SCM_UNBNDP (arg))
- endnetent ();
- else
- setnetent (SCM_NFALSEP (arg));
- return SCM_UNSPECIFIED;
-}
-
-SCM_PROC (s_setproto, "setproto", 0, 1, 0, scm_setproto);
-#ifdef __STDC__
-SCM
-scm_setproto (SCM arg)
-#else
-SCM
-scm_setproto (arg)
- SCM arg;
-#endif
-{
- if (SCM_UNBNDP (arg))
- endprotoent ();
- else
- setprotoent (SCM_NFALSEP (arg));
- return SCM_UNSPECIFIED;
-}
-
-SCM_PROC (s_setserv, "setserv", 0, 1, 0, scm_setserv);
-#ifdef __STDC__
-SCM
-scm_setserv (SCM arg)
-#else
-SCM
-scm_setserv (arg)
- SCM arg;
-#endif
-{
- if (SCM_UNBNDP (arg))
- endservent ();
- else
- setservent (SCM_NFALSEP (arg));
- return SCM_UNSPECIFIED;
-}
-
-#ifdef __STDC__
-void
-scm_init_socket (void)
-#else
-void
-scm_init_socket ()
-#endif
-{
- scm_add_feature ("socket");
-#include "socket.x"
-}
-
-
+/* Copyright (C) 1996,1997,1998 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT 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
+ * along with this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307 USA
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE. If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way. To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice. */
+
+/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
+ gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
+
+\f
+
+#include <stdio.h>
+
+#include "_scm.h"
+#include "unif.h"
+#include "feature.h"
+#include "fports.h"
+
+#include "validate.h"
+#include "socket.h"
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <sys/types.h>
+#include <sys/socket.h>
+#ifdef HAVE_UNIX_DOMAIN_SOCKETS
+#include <sys/un.h>
+#endif
+#include <netinet/in.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+
+\f
+
+SCM_DEFINE (scm_htons, "htons", 1, 0, 0,
+ (SCM in),
+ "Returns a new integer from @var{value} by converting from host to\n"
+ "network order. @var{value} must be within the range of a C unsigned\n"
+ "short integer.")
+#define FUNC_NAME s_scm_htons
+{
+ unsigned short c_in;
+
+ SCM_VALIDATE_INUM_COPY (1,in,c_in);
+ if (c_in != SCM_INUM (in))
+ SCM_OUT_OF_RANGE (1,in);
+
+ return SCM_MAKINUM (htons (c_in));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_ntohs, "ntohs", 1, 0, 0,
+ (SCM in),
+ "Returns a new integer from @var{value} by converting from network to\n"
+ "host order. @var{value} must be within the range of a C unsigned short\n"
+ "integer.")
+#define FUNC_NAME s_scm_ntohs
+{
+ unsigned short c_in;
+
+ SCM_VALIDATE_INUM_COPY (1,in,c_in);
+ if (c_in != SCM_INUM (in))
+ SCM_OUT_OF_RANGE (1,in);
+
+ return SCM_MAKINUM (ntohs (c_in));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_htonl, "htonl", 1, 0, 0,
+ (SCM in),
+ "Returns a new integer from @var{value} by converting from host to\n"
+ "network order. @var{value} must be within the range of a C unsigned\n"
+ "long integer.")
+#define FUNC_NAME s_scm_htonl
+{
+ unsigned long c_in = SCM_NUM2ULONG (1,in);
+ return scm_ulong2num (htonl (c_in));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_ntohl, "ntohl", 1, 0, 0,
+ (SCM in),
+ "Returns a new integer from @var{value} by converting from network to\n"
+ "host order. @var{value} must be within the range of a C unsigned\n"
+ "long integer.")
+#define FUNC_NAME s_scm_ntohl
+{
+ unsigned long c_in = SCM_NUM2ULONG (1,in);
+ return scm_ulong2num (ntohl (c_in));
+}
+#undef FUNC_NAME
+
+SCM_SYMBOL (sym_socket, "socket");
+
+static SCM
+scm_sock_fd_to_port (int fd, const char *proc)
+{
+ SCM result;
+ if (fd == -1)
+ scm_syserror (proc);
+ result = scm_fdes_to_port (fd, "r+0", sym_socket);
+ return result;
+}
+
+
+#define SCM_SOCK_FD_TO_PORT(fd) (scm_sock_fd_to_port((fd),FUNC_NAME))
+
+SCM_DEFINE (scm_socket, "socket", 3, 0, 0,
+ (SCM family, SCM style, SCM proto),
+ "Returns a new socket port of the type specified by @var{family}, @var{style}\n"
+ "and @var{protocol}. All three parameters are integers. Typical values\n"
+ "for @var{family} are the values of @code{AF_UNIX}\n"
+ "and @code{AF_INET}. Typical values for @var{style} are\n"
+ "the values of @code{SOCK_STREAM}, @code{SOCK_DGRAM} and @code{SOCK_RAW}.\n\n"
+ "@var{protocol} can be obtained from a protocol name using\n"
+ "@code{getprotobyname}. A value of\n"
+ "zero specifies the default protocol, which is usually right.\n\n"
+ "A single socket port cannot by used for communication until\n"
+ "it has been connected to another socket.")
+#define FUNC_NAME s_scm_socket
+{
+ int fd;
+ SCM result;
+
+ SCM_VALIDATE_INUM (1,family);
+ SCM_VALIDATE_INUM (2,style);
+ SCM_VALIDATE_INUM (3,proto);
+ fd = socket (SCM_INUM (family), SCM_INUM (style), SCM_INUM (proto));
+ result = SCM_SOCK_FD_TO_PORT (fd);
+ return result;
+}
+#undef FUNC_NAME
+
+
+
+#ifdef HAVE_SOCKETPAIR
+SCM_DEFINE (scm_socketpair, "socketpair", 3, 0, 0,
+ (SCM family, SCM style, SCM proto),
+ "Returns a pair of connected (but unnamed) socket ports of the type specified\n"
+ "by @var{family}, @var{style} and @var{protocol}.\n"
+ "Many systems support only\n"
+ "socket pairs of the @code{AF_UNIX} family. Zero is likely to be\n"
+ "the only meaningful value for @var{protocol}.")
+#define FUNC_NAME s_scm_socketpair
+{
+ int fam;
+ int fd[2];
+ SCM a;
+ SCM b;
+
+ SCM_VALIDATE_INUM (1,family);
+ SCM_VALIDATE_INUM (2,style);
+ SCM_VALIDATE_INUM (3,proto);
+
+ fam = SCM_INUM (family);
+
+ if (socketpair (fam, SCM_INUM (style), SCM_INUM (proto), fd) == -1)
+ SCM_SYSERROR;
+
+ a = SCM_SOCK_FD_TO_PORT(fd[0]);
+ b = SCM_SOCK_FD_TO_PORT(fd[1]);
+ return scm_cons (a, b);
+}
+#undef FUNC_NAME
+#endif
+
+SCM_DEFINE (scm_getsockopt, "getsockopt", 3, 0, 0,
+ (SCM sock, SCM level, SCM optname),
+ "Returns the value of a particular socket option for the socket\n"
+ "port @var{socket}. @var{level} is an integer code for type of option\n"
+ "being requested, e.g., @code{SOL_SOCKET} for socket-level options.\n"
+ "@var{optname} is an\n"
+ "integer code for the option required and should be specified using one of\n"
+ "the symbols @code{SO_DEBUG}, @code{SO_REUSEADDR} etc.\n\n"
+ "The returned value is typically an integer but @code{SO_LINGER} returns a\n"
+ "pair of integers.")
+#define FUNC_NAME s_scm_getsockopt
+{
+ int fd;
+ int optlen;
+#ifdef HAVE_STRUCT_LINGER
+ char optval[sizeof (struct linger)];
+#else
+ char optval[sizeof (scm_sizet)];
+#endif
+ int ilevel;
+ int ioptname;
+
+#ifdef HAVE_STRUCT_LINGER
+ optlen = (int) sizeof (struct linger);
+#else
+ optlen = (int) sizeof (scm_sizet);
+#endif
+
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_INUM_COPY (2,level,ilevel);
+ SCM_VALIDATE_INUM_COPY (3,optname,ioptname);
+
+ fd = SCM_FPORT_FDES (sock);
+ if (getsockopt (fd, ilevel, ioptname, (void *) optval, &optlen) == -1)
+ SCM_SYSERROR;
+
+#ifdef SO_LINGER
+ if (ilevel == SOL_SOCKET && ioptname == SO_LINGER)
+ {
+#ifdef HAVE_STRUCT_LINGER
+ struct linger *ling = (struct linger *) optval;
+ return scm_cons (SCM_MAKINUM (ling->l_onoff),
+ SCM_MAKINUM (ling->l_linger));
+#else
+ scm_sizet *ling = (scm_sizet *) optval;
+ return scm_cons (SCM_MAKINUM (*ling),
+ SCM_MAKINUM (0));
+#endif
+ }
+#endif
+#ifdef SO_SNDBUF
+ if (ilevel == SOL_SOCKET && ioptname == SO_SNDBUF)
+ {
+ scm_sizet *bufsize = (scm_sizet *) optval;
+ return SCM_MAKINUM (*bufsize);
+ }
+#endif
+#ifdef SO_RCVBUF
+ if (ilevel == SOL_SOCKET && ioptname == SO_RCVBUF)
+ {
+ scm_sizet *bufsize = (scm_sizet *) optval;
+ return SCM_MAKINUM (*bufsize);
+ }
+#endif
+ return SCM_MAKINUM (*(int *) optval);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_setsockopt, "setsockopt", 4, 0, 0,
+ (SCM sock, SCM level, SCM optname, SCM value),
+ "Sets the value of a particular socket option for the socket\n"
+ "port @var{socket}. @var{level} is an integer code for type of option\n"
+ "being set, e.g., @code{SOL_SOCKET} for socket-level options.\n"
+ "@var{optname} is an\n"
+ "integer code for the option to set and should be specified using one of\n"
+ "the symbols @code{SO_DEBUG}, @code{SO_REUSEADDR} etc.\n"
+ "@var{value} is the value to which the option should be set. For\n"
+ "most options this must be an integer, but for @code{SO_LINGER} it must\n"
+ "be a pair.\n\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_setsockopt
+{
+ int fd;
+ int optlen;
+#ifdef HAVE_STRUCT_LINGER
+ char optval[sizeof (struct linger)]; /* Biggest option :-( */
+#else
+ char optval[sizeof (scm_sizet)];
+#endif
+ int ilevel, ioptname;
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_INUM_COPY (2,level,ilevel);
+ SCM_VALIDATE_INUM_COPY (3,optname,ioptname);
+ fd = SCM_FPORT_FDES (sock);
+ if (0);
+#ifdef SO_LINGER
+ else if (ilevel == SOL_SOCKET && ioptname == SO_LINGER)
+ {
+#ifdef HAVE_STRUCT_LINGER
+ struct linger ling;
+ SCM_ASSERT (SCM_CONSP (value)
+ && SCM_INUMP (SCM_CAR (value))
+ && SCM_INUMP (SCM_CDR (value)),
+ value, SCM_ARG4, FUNC_NAME);
+ ling.l_onoff = SCM_INUM (SCM_CAR (value));
+ ling.l_linger = SCM_INUM (SCM_CDR (value));
+ optlen = (int) sizeof (struct linger);
+ memcpy (optval, (void *) &ling, optlen);
+#else
+ scm_sizet ling;
+ SCM_ASSERT (SCM_CONSP (value)
+ && SCM_INUMP (SCM_CAR (value))
+ && SCM_INUMP (SCM_CDR (value)),
+ value, SCM_ARG4, FUNC_NAME);
+ ling = SCM_INUM (SCM_CAR (value));
+ optlen = (int) sizeof (scm_sizet);
+ (*(scm_sizet *) optval) = (scm_sizet) SCM_INUM (value);
+#endif
+ }
+#endif
+#ifdef SO_SNDBUF
+ else if (ilevel == SOL_SOCKET && ioptname == SO_SNDBUF)
+ {
+ SCM_VALIDATE_INUM (4,value);
+ optlen = (int) sizeof (scm_sizet);
+ (*(scm_sizet *) optval) = (scm_sizet) SCM_INUM (value);
+ }
+#endif
+#ifdef SO_RCVBUF
+ else if (ilevel == SOL_SOCKET && ioptname == SO_RCVBUF)
+ {
+ SCM_VALIDATE_INUM (4,value);
+ optlen = (int) sizeof (scm_sizet);
+ (*(scm_sizet *) optval) = (scm_sizet) SCM_INUM (value);
+ }
+#endif
+ else
+ {
+ /* Most options just take an int. */
+ SCM_VALIDATE_INUM (4,value);
+ optlen = (int) sizeof (int);
+ (*(int *) optval) = (int) SCM_INUM (value);
+ }
+ if (setsockopt (fd, ilevel, ioptname, (void *) optval, optlen) == -1)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_shutdown, "shutdown", 2, 0, 0,
+ (SCM sock, SCM how),
+ "Sockets can be closed simply by using @code{close-port}. The\n"
+ "@code{shutdown} procedure allows reception or tranmission on a\n"
+ "connection to be shut down individually, according to the parameter\n"
+ "@var{how}:\n\n"
+ "@table @asis\n"
+ "@item 0\n"
+ "Stop receiving data for this socket. If further data arrives, reject it.\n"
+ "@item 1\n"
+ "Stop trying to transmit data from this socket. Discard any\n"
+ "data waiting to be sent. Stop looking for acknowledgement of\n"
+ "data already sent; don't retransmit it if it is lost.\n"
+ "@item 2\n"
+ "Stop both reception and transmission.\n"
+ "@end table\n\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_shutdown
+{
+ int fd;
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_INUM (2,how);
+ SCM_ASSERT_RANGE(2,how,0 <= SCM_INUM (how) && 2 >= SCM_INUM (how));
+ fd = SCM_FPORT_FDES (sock);
+ if (shutdown (fd, SCM_INUM (how)) == -1)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+/* convert fam/address/args into a sockaddr of the appropriate type.
+ args is modified by removing the arguments actually used.
+ which_arg and proc are used when reporting errors:
+ which_arg is the position of address in the original argument list.
+ proc is the name of the original procedure.
+ size returns the size of the structure allocated. */
+
+
+static struct sockaddr *
+scm_fill_sockaddr (int fam,SCM address,SCM *args,int which_arg,const char *proc,scm_sizet *size)
+{
+ switch (fam)
+ {
+ case AF_INET:
+ {
+ SCM isport;
+ struct sockaddr_in *soka;
+
+ soka = (struct sockaddr_in *)
+ scm_must_malloc (sizeof (struct sockaddr_in), proc);
+ /* e.g., for BSDs which don't like invalid sin_len. */
+ memset (soka, 0, sizeof (struct sockaddr_in));
+ soka->sin_family = AF_INET;
+ soka->sin_addr.s_addr =
+ htonl (scm_num2ulong (address, (char *) which_arg, proc));
+ SCM_ASSERT (SCM_CONSP (*args), *args,
+ which_arg + 1, proc);
+ isport = SCM_CAR (*args);
+ *args = SCM_CDR (*args);
+ SCM_ASSERT (SCM_INUMP (isport), isport, which_arg + 1, proc);
+ soka->sin_port = htons (SCM_INUM (isport));
+ *size = sizeof (struct sockaddr_in);
+ return (struct sockaddr *) soka;
+ }
+#ifdef HAVE_UNIX_DOMAIN_SOCKETS
+ case AF_UNIX:
+ {
+ struct sockaddr_un *soka;
+
+ soka = (struct sockaddr_un *)
+ scm_must_malloc (sizeof (struct sockaddr_un), proc);
+ memset (soka, 0, sizeof (struct sockaddr_un));
+ soka->sun_family = AF_UNIX;
+ SCM_ASSERT (SCM_ROSTRINGP (address), address,
+ which_arg, proc);
+ memcpy (soka->sun_path, SCM_ROCHARS (address),
+ 1 + SCM_ROLENGTH (address));
+ *size = sizeof (struct sockaddr_un);
+ return (struct sockaddr *) soka;
+ }
+#endif
+ default:
+ scm_out_of_range (proc, SCM_MAKINUM (fam));
+ }
+}
+
+SCM_DEFINE (scm_connect, "connect", 3, 0, 1,
+ (SCM sock, SCM fam, SCM address, SCM args),
+ "Initiates a connection from @var{socket} to the address\n"
+ "specified by @var{address} and possibly @var{arg @dots{}}. The format\n"
+ "required for @var{address}\n"
+ "and @var{arg} @dots{} depends on the family of the socket.\n\n"
+ "For a socket of family @code{AF_UNIX},\n"
+ "only @code{address} is specified and must be a string with the\n"
+ "filename where the socket is to be created.\n\n"
+ "For a socket of family @code{AF_INET},\n"
+ "@code{address} must be an integer Internet host address and @var{arg} @dots{}\n"
+ "must be a single integer port number.\n\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_connect
+{
+ int fd;
+ struct sockaddr *soka;
+ scm_sizet size;
+
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_INUM (2,fam);
+ fd = SCM_FPORT_FDES (sock);
+ soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args, 3, FUNC_NAME, &size);
+ if (connect (fd, soka, size) == -1)
+ SCM_SYSERROR;
+ scm_must_free ((char *) soka);
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_bind, "bind", 3, 0, 1,
+ (SCM sock, SCM fam, SCM address, SCM args),
+ "Assigns an address to the socket port @var{socket}.\n"
+ "Generally this only needs to be done for server sockets,\n"
+ "so they know where to look for incoming connections. A socket\n"
+ "without an address will be assigned one automatically when it\n"
+ "starts communicating.\n\n"
+ "The format of @var{address} and @var{ARG} @dots{} depends on the family\n"
+ "of the socket.\n\n"
+ "For a socket of family @code{AF_UNIX}, only @var{address}\n"
+ "is specified and must \n"
+ "be a string with the filename where the socket is to be created.\n\n"
+ "For a socket of family @code{AF_INET}, @var{address} must be an integer\n"
+ "Internet host address and @var{arg} @dots{} must be a single integer\n"
+ "port number.\n\n"
+ "The values of the following variables can also be used for @var{address}:\n\n"
+ "@defvar INADDR_ANY\n"
+ "Allow connections from any address.\n"
+ "@end defvar\n\n"
+ "@defvar INADDR_LOOPBACK\n"
+ "The address of the local host using the loopback device.\n"
+ "@end defvar\n\n"
+ "@defvar INADDR_BROADCAST\n"
+ "The broadcast address on the local network.\n"
+ "@end defvar\n\n"
+ "@defvar INADDR_NONE\n"
+ "No address.\n"
+ "@end defvar\n\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_bind
+{
+ int rv;
+ struct sockaddr *soka;
+ scm_sizet size;
+ int fd;
+
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_INUM (2,fam);
+ soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args, 3, FUNC_NAME, &size);
+ fd = SCM_FPORT_FDES (sock);
+ rv = bind (fd, soka, size);
+ if (rv == -1)
+ SCM_SYSERROR;
+ scm_must_free ((char *) soka);
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_listen, "listen", 2, 0, 0,
+ (SCM sock, SCM backlog),
+ "This procedure enables @var{socket} to accept connection\n"
+ "requests. @var{backlog} is an integer specifying\n"
+ "the maximum length of the queue for pending connections.\n"
+ "If the queue fills, new clients will fail to connect until the\n"
+ "server calls @code{accept} to accept a connection from the queue.\n\n"
+ "The return value is unspecified.")
+#define FUNC_NAME s_scm_listen
+{
+ int fd;
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_INUM (2,backlog);
+ fd = SCM_FPORT_FDES (sock);
+ if (listen (fd, SCM_INUM (backlog)) == -1)
+ SCM_SYSERROR;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+/* Put the components of a sockaddr into a new SCM vector. */
+
+static SCM
+scm_addr_vector (struct sockaddr *address,const char *proc)
+{
+ short int fam = address->sa_family;
+ SCM result;
+ SCM *ve;
+#ifdef HAVE_UNIX_DOMAIN_SOCKETS
+ if (fam == AF_UNIX)
+ {
+ struct sockaddr_un *nad = (struct sockaddr_un *) address;
+ result = scm_make_vector (SCM_MAKINUM (2), SCM_UNSPECIFIED);
+ ve = SCM_VELTS (result);
+ ve[0] = scm_ulong2num ((unsigned long) fam);
+ ve[1] = scm_makfromstr (nad->sun_path,
+ (scm_sizet) strlen (nad->sun_path), 0);
+ }
+ else
+#endif
+ if (fam == AF_INET)
+ {
+ struct sockaddr_in *nad = (struct sockaddr_in *) address;
+ result = scm_make_vector (SCM_MAKINUM (3), SCM_UNSPECIFIED);
+ ve = SCM_VELTS (result);
+ ve[0] = scm_ulong2num ((unsigned long) fam);
+ ve[1] = scm_ulong2num (ntohl (nad->sin_addr.s_addr));
+ ve[2] = scm_ulong2num ((unsigned long) ntohs (nad->sin_port));
+ }
+ else
+ scm_misc_error (proc, "Unrecognised address family: ~A",
+ scm_listify (SCM_MAKINUM (fam), SCM_UNDEFINED));
+
+ return result;
+}
+
+/* Allocate a buffer large enough to hold any sockaddr type. */
+static char *scm_addr_buffer;
+static int scm_addr_buffer_size;
+
+static void
+scm_init_addr_buffer (void)
+{
+ scm_addr_buffer_size =
+#ifdef HAVE_UNIX_DOMAIN_SOCKETS
+ (int) sizeof (struct sockaddr_un)
+#else
+ 0
+#endif
+ ;
+ if (sizeof (struct sockaddr_in) > scm_addr_buffer_size)
+ scm_addr_buffer_size = (int) sizeof (struct sockaddr_in);
+ scm_addr_buffer = scm_must_malloc (scm_addr_buffer_size, "address buffer");
+}
+
+SCM_DEFINE (scm_accept, "accept", 1, 0, 0,
+ (SCM sock),
+ "Accepts a connection on a bound, listening socket @var{socket}. If there\n"
+ "are no pending connections in the queue, it waits until\n"
+ "one is available unless the non-blocking option has been set on the\n"
+ "socket.\n\n"
+ "The return value is a\n"
+ "pair in which the CAR is a new socket port for the connection and\n"
+ "the CDR is an object with address information about the client which\n"
+ "initiated the connection.\n\n"
+ "If the address is not available then the CDR will be an empty vector.\n\n"
+ "@var{socket} does not become part of the\n"
+ "connection and will continue to accept new requests.")
+#define FUNC_NAME s_scm_accept
+{
+ int fd;
+ int newfd;
+ SCM address;
+ SCM newsock;
+
+ int tmp_size;
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ fd = SCM_FPORT_FDES (sock);
+ tmp_size = scm_addr_buffer_size;
+ newfd = accept (fd, (struct sockaddr *) scm_addr_buffer, &tmp_size);
+ newsock = scm_sock_fd_to_port (newfd, FUNC_NAME);
+ if (tmp_size > 0)
+ address = scm_addr_vector ((struct sockaddr *) scm_addr_buffer, FUNC_NAME);
+ else
+ address = SCM_BOOL_F;
+
+ return scm_cons (newsock, address);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_getsockname, "getsockname", 1, 0, 0,
+ (SCM sock),
+ "Returns the address of @var{socket}, in the same form as the object\n"
+ "returned by @code{accept}. On many systems the address of a socket\n"
+ "in the @code{AF_FILE} namespace cannot be read.")
+#define FUNC_NAME s_scm_getsockname
+{
+ int tmp_size;
+ int fd;
+ SCM result;
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ fd = SCM_FPORT_FDES (sock);
+ tmp_size = scm_addr_buffer_size;
+ if (getsockname (fd, (struct sockaddr *) scm_addr_buffer, &tmp_size) == -1)
+ SCM_SYSERROR;
+ if (tmp_size > 0)
+ result = scm_addr_vector ((struct sockaddr *) scm_addr_buffer, FUNC_NAME);
+ else
+ result = SCM_BOOL_F;
+ return result;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_getpeername, "getpeername", 1, 0, 0,
+ (SCM sock),
+ "Returns the address of the socket that the socket @var{socket} is connected to,\n"
+ "in the same form as the object\n"
+ "returned by @code{accept}. On many systems the address of a socket\n"
+ "in the @code{AF_FILE} namespace cannot be read.")
+#define FUNC_NAME s_scm_getpeername
+{
+ int tmp_size;
+ int fd;
+ SCM result;
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ fd = SCM_FPORT_FDES (sock);
+ tmp_size = scm_addr_buffer_size;
+ if (getpeername (fd, (struct sockaddr *) scm_addr_buffer, &tmp_size) == -1)
+ SCM_SYSERROR;
+ if (tmp_size > 0)
+ result = scm_addr_vector ((struct sockaddr *) scm_addr_buffer, FUNC_NAME);
+ else
+ result = SCM_BOOL_F;
+ return result;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_recv, "recv!", 2, 1, 0,
+ (SCM sock, SCM buf, SCM flags),
+ "Receives data from the socket port @var{socket}. @var{socket} must already\n"
+ "be bound to the address from which data is to be received.\n"
+ "@var{buf} is a string into which\n"
+ "the data will be written. The size of @var{buf} limits the amount of\n"
+ "data which can be received: in the case of packet\n"
+ "protocols, if a packet larger than this limit is encountered then some data\n"
+ "will be irrevocably lost.\n\n"
+ "The optional @var{flags} argument is a value or\n"
+ "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n"
+ "The value returned is the number of bytes read from the socket.\n\n"
+ "Note that the data is read directly from the socket file descriptor:any unread buffered port data is ignored.")
+#define FUNC_NAME s_scm_recv
+{
+ int rv;
+ int fd;
+ int flg;
+
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_STRING (2,buf);
+ SCM_VALIDATE_INUM_DEF_COPY (3,flags,0,flg);
+ fd = SCM_FPORT_FDES (sock);
+
+ SCM_SYSCALL (rv = recv (fd, SCM_CHARS (buf), SCM_LENGTH (buf), flg));
+ if (rv == -1)
+ SCM_SYSERROR;
+
+ return SCM_MAKINUM (rv);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_send, "send", 2, 1, 0,
+ (SCM sock, SCM message, SCM flags),
+ "Transmits the string @var{message} on the socket port @var{socket}. \n"
+ "@var{socket} must already be bound to a destination address. The\n"
+ "value returned is the number of bytes transmitted -- it's possible for\n"
+ "this to be less than the length of @var{message} if the socket is\n"
+ "set to be non-blocking. The optional @var{flags} argument is a value or\n"
+ "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n"
+ "Note that the data is written directly to the socket file descriptor:\n"
+ "any unflushed buffered port data is ignored.")
+#define FUNC_NAME s_scm_send
+{
+ int rv;
+ int fd;
+ int flg;
+
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_ROSTRING (2,message);
+ SCM_VALIDATE_INUM_DEF_COPY (3,flags,0,flg);
+ fd = SCM_FPORT_FDES (sock);
+
+ SCM_SYSCALL (rv = send (fd, SCM_ROCHARS (message), SCM_ROLENGTH (message), flg));
+ if (rv == -1)
+ SCM_SYSERROR;
+ return SCM_MAKINUM (rv);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_recvfrom, "recvfrom!", 2, 3, 0,
+ (SCM sock, SCM buf, SCM flags, SCM start, SCM end),
+ "Returns data from the socket port @var{socket} and also information about\n"
+ "where the data was received from. @var{socket} must already\n"
+ "be bound to the address from which data is to be received.\n"
+ "@code{buf}, is a string into which\n"
+ "the data will be written. The size of @var{buf} limits the amount of\n"
+ "data which can be received: in the case of packet\n"
+ "protocols, if a packet larger than this limit is encountered then some data\n"
+ "will be irrevocably lost.\n\n"
+ "The optional @var{flags} argument is a value or\n"
+ "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n"
+ "The value returned is a pair: the CAR is the number of bytes read from\n"
+ "the socket and the CDR an address object in the same form as returned by\n"
+ "@code{accept}.\n\n"
+ "The @var{start} and @var{end} arguments specify a substring of @var{buf}\n"
+ "to which the data should be written.\n\n"
+ "Note that the data is read directly from the socket file descriptor:\n"
+ "any unread buffered port data is ignored.")
+#define FUNC_NAME s_scm_recvfrom
+{
+ int rv;
+ int fd;
+ int flg;
+ int offset = 0;
+ int cend;
+ int tmp_size;
+ SCM address;
+
+ SCM_VALIDATE_OPFPORT (1,sock);
+ SCM_VALIDATE_STRING (2,buf);
+ cend = SCM_LENGTH (buf);
+
+ if (SCM_UNBNDP (flags))
+ flg = 0;
+ else
+ {
+ flg = SCM_NUM2ULONG (3,flags);
+
+ if (!SCM_UNBNDP (start))
+ {
+ offset = (int) SCM_NUM2LONG (4,start);
+
+ if (offset < 0 || offset >= cend)
+ SCM_OUT_OF_RANGE (4, start);
+
+ if (!SCM_UNBNDP (end))
+ {
+ int tend = (int) SCM_NUM2LONG (5,end);
+
+ if (tend <= offset || tend > cend)
+ SCM_OUT_OF_RANGE (5, end);
+
+ cend = tend;
+ }
+ }
+ }
+
+ fd = SCM_FPORT_FDES (sock);
+
+ tmp_size = scm_addr_buffer_size;
+ SCM_SYSCALL (rv = recvfrom (fd, SCM_CHARS (buf) + offset,
+ cend - offset, flg,
+ (struct sockaddr *) scm_addr_buffer,
+ &tmp_size));
+ if (rv == -1)
+ SCM_SYSERROR;
+ if (tmp_size > 0)
+ address = scm_addr_vector ((struct sockaddr *) scm_addr_buffer, FUNC_NAME);
+ else
+ address = SCM_BOOL_F;
+
+ return scm_cons (SCM_MAKINUM (rv), address);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_sendto, "sendto", 4, 0, 1,
+ (SCM sock, SCM message, SCM fam, SCM address, SCM args_and_flags),
+ "Transmits the string @var{message} on the socket port @var{socket}. The\n"
+ "destination address is specified using the @var{family}, @var{address} and\n"
+ "@var{arg} arguments, in a similar way to the @code{connect}\n"
+ "procedure. The\n"
+ "value returned is the number of bytes transmitted -- it's possible for\n"
+ "this to be less than the length of @var{message} if the socket is\n"
+ "set to be non-blocking. The optional @var{flags} argument is a value or\n"
+ "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n"
+ "Note that the data is written directly to the socket file descriptor:\n"
+ "any unflushed buffered port data is ignored.")
+#define FUNC_NAME s_scm_sendto
+{
+ int rv;
+ int fd;
+ int flg;
+ struct sockaddr *soka;
+ scm_sizet size;
+ int save_err;
+
+ sock = SCM_COERCE_OUTPORT (sock);
+ SCM_VALIDATE_FPORT (1,sock);
+ SCM_VALIDATE_ROSTRING (2,message);
+ SCM_VALIDATE_INUM (3,fam);
+ fd = SCM_FPORT_FDES (sock);
+ soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args_and_flags, 4,
+ FUNC_NAME, &size);
+ if (SCM_NULLP (args_and_flags))
+ flg = 0;
+ else
+ {
+ SCM_VALIDATE_CONS (5,args_and_flags);
+ flg = SCM_NUM2ULONG (5,SCM_CAR (args_and_flags));
+ }
+ SCM_SYSCALL (rv = sendto (fd, SCM_ROCHARS (message), SCM_ROLENGTH (message),
+ flg, soka, size));
+ save_err = errno;
+ scm_must_free ((char *) soka);
+ errno = save_err;
+ if (rv == -1)
+ SCM_SYSERROR;
+ return SCM_MAKINUM (rv);
+}
+#undef FUNC_NAME
+\f
+
+
+void
+scm_init_socket ()
+{
+ /* protocol families. */
+#ifdef AF_UNSPEC
+ scm_sysintern ("AF_UNSPEC", SCM_MAKINUM (AF_UNSPEC));
+#endif
+#ifdef AF_UNIX
+ scm_sysintern ("AF_UNIX", SCM_MAKINUM (AF_UNIX));
+#endif
+#ifdef AF_INET
+ scm_sysintern ("AF_INET", SCM_MAKINUM (AF_INET));
+#endif
+
+#ifdef PF_UNSPEC
+ scm_sysintern ("PF_UNSPEC", SCM_MAKINUM (PF_UNSPEC));
+#endif
+#ifdef PF_UNIX
+ scm_sysintern ("PF_UNIX", SCM_MAKINUM (PF_UNIX));
+#endif
+#ifdef PF_INET
+ scm_sysintern ("PF_INET", SCM_MAKINUM (PF_INET));
+#endif
+
+ /* socket types. */
+#ifdef SOCK_STREAM
+ scm_sysintern ("SOCK_STREAM", SCM_MAKINUM (SOCK_STREAM));
+#endif
+#ifdef SOCK_DGRAM
+ scm_sysintern ("SOCK_DGRAM", SCM_MAKINUM (SOCK_DGRAM));
+#endif
+#ifdef SOCK_RAW
+ scm_sysintern ("SOCK_RAW", SCM_MAKINUM (SOCK_RAW));
+#endif
+
+ /* setsockopt level. */
+#ifdef SOL_SOCKET
+ scm_sysintern ("SOL_SOCKET", SCM_MAKINUM (SOL_SOCKET));
+#endif
+#ifdef SOL_IP
+ scm_sysintern ("SOL_IP", SCM_MAKINUM (SOL_IP));
+#endif
+#ifdef SOL_TCP
+ scm_sysintern ("SOL_TCP", SCM_MAKINUM (SOL_TCP));
+#endif
+#ifdef SOL_UDP
+ scm_sysintern ("SOL_UDP", SCM_MAKINUM (SOL_UDP));
+#endif
+
+ /* setsockopt names. */
+#ifdef SO_DEBUG
+ scm_sysintern ("SO_DEBUG", SCM_MAKINUM (SO_DEBUG));
+#endif
+#ifdef SO_REUSEADDR
+ scm_sysintern ("SO_REUSEADDR", SCM_MAKINUM (SO_REUSEADDR));
+#endif
+#ifdef SO_STYLE
+ scm_sysintern ("SO_STYLE", SCM_MAKINUM (SO_STYLE));
+#endif
+#ifdef SO_TYPE
+ scm_sysintern ("SO_TYPE", SCM_MAKINUM (SO_TYPE));
+#endif
+#ifdef SO_ERROR
+ scm_sysintern ("SO_ERROR", SCM_MAKINUM (SO_ERROR));
+#endif
+#ifdef SO_DONTROUTE
+ scm_sysintern ("SO_DONTROUTE", SCM_MAKINUM (SO_DONTROUTE));
+#endif
+#ifdef SO_BROADCAST
+ scm_sysintern ("SO_BROADCAST", SCM_MAKINUM (SO_BROADCAST));
+#endif
+#ifdef SO_SNDBUF
+ scm_sysintern ("SO_SNDBUF", SCM_MAKINUM (SO_SNDBUF));
+#endif
+#ifdef SO_RCVBUF
+ scm_sysintern ("SO_RCVBUF", SCM_MAKINUM (SO_RCVBUF));
+#endif
+#ifdef SO_KEEPALIVE
+ scm_sysintern ("SO_KEEPALIVE", SCM_MAKINUM (SO_KEEPALIVE));
+#endif
+#ifdef SO_OOBINLINE
+ scm_sysintern ("SO_OOBINLINE", SCM_MAKINUM (SO_OOBINLINE));
+#endif
+#ifdef SO_NO_CHECK
+ scm_sysintern ("SO_NO_CHECK", SCM_MAKINUM (SO_NO_CHECK));
+#endif
+#ifdef SO_PRIORITY
+ scm_sysintern ("SO_PRIORITY", SCM_MAKINUM (SO_PRIORITY));
+#endif
+#ifdef SO_LINGER
+ scm_sysintern ("SO_LINGER", SCM_MAKINUM (SO_LINGER));
+#endif
+
+ /* recv/send options. */
+#ifdef MSG_OOB
+ scm_sysintern ("MSG_OOB", SCM_MAKINUM (MSG_OOB));
+#endif
+#ifdef MSG_PEEK
+ scm_sysintern ("MSG_PEEK", SCM_MAKINUM (MSG_PEEK));
+#endif
+#ifdef MSG_DONTROUTE
+ scm_sysintern ("MSG_DONTROUTE", SCM_MAKINUM (MSG_DONTROUTE));
+#endif
+
+ scm_add_feature ("socket");
+ scm_init_addr_buffer ();
+
+#include "socket.x"
+}
+
HCoop / bpt / guile.git / blobdiff