[bpt/guile.git] / libguile / net_db.c

/* "net_db.c" network database support
 *	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.
 * Split into net_db.c and socket.c.
 */
\f

#include <stdio.h>
#include "_scm.h"
#include "feature.h"

#include "net_db.h"

#ifdef HAVE_STRING_H
#include <string.h>
#endif

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>

/* Some systems do not declare this.  It seems unlikely to produce a
   conflict.  */
extern int h_errno;

\f

#ifndef STDC_HEADERS
int close ();
#endif /* STDC_HEADERS */

extern int inet_aton ();

SCM_PROC (s_inet_aton, "inet-aton", 1, 0, 0, scm_inet_aton);

SCM 
scm_inet_aton (address)
     SCM address;
{
  struct in_addr soka;

  SCM_ASSERT (SCM_NIMP (address) && SCM_ROSTRINGP (address), address, SCM_ARG1, s_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_inet_aton);
  return scm_ulong2num (ntohl (soka.s_addr));
}


SCM_PROC (s_inet_ntoa, "inet-ntoa", 1, 0, 0, scm_inet_ntoa);

SCM 
scm_inet_ntoa (inetid)
     SCM inetid;
{
  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);

SCM 
scm_inet_netof (address)
     SCM address;
{
  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, "inet-lnaof", 1, 0, 0, scm_lnaof);

SCM 
scm_lnaof (address)
     SCM address;
{
  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);

SCM 
scm_inet_makeaddr (net, lna)
     SCM net;
     SCM lna;
{
  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_gethost, "gethost", 0, 1, 0, scm_gethost);

SCM 
scm_gethost (name)
     SCM name;
{
  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;
  if (SCM_UNBNDP (name))
    {
      SCM_DEFER_INTS;
#ifdef HAVE_GETHOSTENT
      entry = gethostent ();
#else
      entry = NULL;
#endif
    }
  else if (SCM_NIMP (name) && SCM_ROSTRINGP (name))
    {
      SCM_COERCE_SUBSTR (name);
      SCM_DEFER_INTS;
      entry = gethostbyname (SCM_ROCHARS (name));
    }
  else
    {
      inad.s_addr = htonl (scm_num2ulong (name, (char *) SCM_ARG1, s_gethost));
      SCM_DEFER_INTS;
      entry = gethostbyaddr ((char *) &inad, sizeof (inad), AF_INET);
    }
  SCM_ALLOW_INTS;
  if (!entry)
    {
      char *errmsg;
      SCM args;
      if (SCM_UNBNDP (name))
	args = SCM_BOOL_F;
      else
	args = scm_listify (name, SCM_UNDEFINED);
      switch (h_errno)
	{
	case HOST_NOT_FOUND: errmsg = "host %s not found"; break;
	case TRY_AGAIN:	     errmsg = "nameserver failure (try later)"; break;
	case NO_RECOVERY:    errmsg = "non-recoverable error"; break;
	case NO_DATA:        errmsg = "no address associated with %s"; break;
	default:	     errmsg = "undefined error"; break;
	}
      scm_syserror_msg (s_gethost, errmsg, args, h_errno);
    }
  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_getnet, "getnet", 0, 1, 0, scm_getnet);

SCM 
scm_getnet (name)
     SCM name;
{
  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_ROSTRINGP (name))
    {
      SCM_COERCE_SUBSTR (name);
      SCM_DEFER_INTS;
      entry = getnetbyname (SCM_ROCHARS (name));
    }
  else
    {
      unsigned long netnum;
      netnum = scm_num2ulong (name, (char *) SCM_ARG1, s_getnet);
      SCM_DEFER_INTS;
      entry = getnetbyaddr (netnum, AF_INET);
    }
  SCM_ALLOW_INTS;
  if (!entry)
    {
      if (SCM_UNBNDP (name))
	scm_syserror (s_getnet);
      else
	scm_syserror_msg (s_getnet, "no such network %s",
			  scm_listify (name, SCM_UNDEFINED), errno);
    }
  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_getproto, "getproto", 0, 1, 0, scm_getproto);

SCM 
scm_getproto (name)
     SCM name;
{
  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_ROSTRINGP (name))
    {
      SCM_COERCE_SUBSTR (name);
      SCM_DEFER_INTS;
      entry = getprotobyname (SCM_ROCHARS (name));
    }
  else
    {
      unsigned long protonum;
      protonum = scm_num2ulong (name, (char *) SCM_ARG1, s_getproto);
      SCM_DEFER_INTS;
      entry = getprotobynumber (protonum);
    }
  SCM_ALLOW_INTS;
  if (!entry)
    {
      if (SCM_UNBNDP (name))
	scm_syserror (s_getproto);
      else
	scm_syserror_msg (s_getproto, "no such protocol %s",
			  scm_listify (name, SCM_UNDEFINED), errno);
    }
  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;
}


static SCM scm_return_entry SCM_P ((struct servent *entry));

static SCM
scm_return_entry (entry)
     struct servent *entry;
{
  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_getserv, "getserv", 0, 2, 0, scm_getserv);

SCM 
scm_getserv (name, proto)
     SCM name;
     SCM proto;
{
  struct servent *entry;
  if (SCM_UNBNDP (name))
    {
      SCM_DEFER_INTS;
      entry = getservent ();
      if (!entry)
	scm_syserror (s_getserv);
      SCM_ALLOW_INTS;
      return scm_return_entry (entry);
    }
  SCM_ASSERT (SCM_NIMP (proto) && SCM_ROSTRINGP (proto), proto, SCM_ARG2, s_getserv);
  SCM_COERCE_SUBSTR (proto);
  if (SCM_NIMP (name) && SCM_ROSTRINGP (name))
    {
      SCM_COERCE_SUBSTR (name);
      SCM_DEFER_INTS;
      entry = getservbyname (SCM_ROCHARS (name), SCM_ROCHARS (proto));
    }
  else
    {
      SCM_ASSERT (SCM_INUMP (name), name, SCM_ARG1, s_getserv);
      SCM_DEFER_INTS;
      entry = getservbyport (htons (SCM_INUM (name)), SCM_ROCHARS (proto));
    }
  if (!entry)
    scm_syserror_msg (s_getserv, "no such service %s",
		      scm_listify (name, SCM_UNDEFINED), errno);
  SCM_ALLOW_INTS;
  return scm_return_entry (entry);
}

SCM_PROC (s_sethost, "sethost", 0, 1, 0, scm_sethost);

SCM 
scm_sethost (arg)
     SCM arg;
{
  if (SCM_UNBNDP (arg))
    endhostent ();
  else
    sethostent (SCM_NFALSEP (arg));
  return SCM_UNSPECIFIED;
}

SCM_PROC (s_setnet, "setnet", 0, 1, 0, scm_setnet);

SCM 
scm_setnet (arg)
     SCM arg;
{
  if (SCM_UNBNDP (arg))
    endnetent ();
  else
    setnetent (SCM_NFALSEP (arg));
  return SCM_UNSPECIFIED;
}

SCM_PROC (s_setproto, "setproto", 0, 1, 0, scm_setproto);

SCM 
scm_setproto (arg)
     SCM arg;
{
  if (SCM_UNBNDP (arg))
    endprotoent ();
  else
    setprotoent (SCM_NFALSEP (arg));
  return SCM_UNSPECIFIED;
}

SCM_PROC (s_setserv, "setserv", 0, 1, 0, scm_setserv);

SCM 
scm_setserv (arg)
     SCM arg;
{
  if (SCM_UNBNDP (arg))
    endservent ();
  else
    setservent (SCM_NFALSEP (arg));
  return SCM_UNSPECIFIED;
}


void 
scm_init_net_db ()
{
#ifdef INADDR_ANY
  scm_sysintern ("INADDR_ANY", scm_ulong2num (INADDR_ANY));
#endif
#ifdef INADDR_BROADCAST
  scm_sysintern ("INADDR_BROADCAST", scm_ulong2num (INADDR_BROADCAST));
#endif
#ifdef INADDR_NONE
  scm_sysintern ("INADDR_NONE", scm_ulong2num (INADDR_NONE));
#endif
#ifdef INADDR_LOOPBACK
  scm_sysintern ("INADDR_LOOPBACK", scm_ulong2num (INADDR_LOOPBACK));
#endif

  scm_add_feature ("net-db");
#include "net_db.x"
}
Commit	Line	Data
370312ae GH	1	/* "net_db.c" network database support
	2	* Copyright (C) 1995,1996 Free Software Foundation, Inc.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2, or (at your option)
	7	* any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this software; see the file COPYING. If not, write to
	16	* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
	17	*
	18	* As a special exception, the Free Software Foundation gives permission
	19	* for additional uses of the text contained in its release of GUILE.
	20	*
	21	* The exception is that, if you link the GUILE library with other files
	22	* to produce an executable, this does not by itself cause the
	23	* resulting executable to be covered by the GNU General Public License.
	24	* Your use of that executable is in no way restricted on account of
	25	* linking the GUILE library code into it.
	26	*
	27	* This exception does not however invalidate any other reasons why
	28	* the executable file might be covered by the GNU General Public License.
	29	*
	30	* This exception applies only to the code released by the
	31	* Free Software Foundation under the name GUILE. If you copy
	32	* code from other Free Software Foundation releases into a copy of
	33	* GUILE, as the General Public License permits, the exception does
	34	* not apply to the code that you add in this way. To avoid misleading
	35	* anyone as to the status of such modified files, you must delete
	36	* this exception notice from them.
	37	*
	38	* If you write modifications of your own for GUILE, it is your choice
	39	* whether to permit this exception to apply to your modifications.
	40	* If you do not wish that, delete this exception notice.
	41	*/
	42
	43	/* Written in 1994 by Aubrey Jaffer.
	44	* Thanks to Hallvard.Tretteberg@si.sintef.no for inspiration and discussion.
	45	* Rewritten by Gary Houston to be a closer interface to the C socket library.
	46	* Split into net_db.c and socket.c.
	47	*/
	48	\f
	49
	50	#include <stdio.h>
	51	#include "_scm.h"
	52	#include "feature.h"
	53
	54	#include "net_db.h"
	55
	56	#ifdef HAVE_STRING_H
	57	#include <string.h>
	58	#endif
	59
	60	#include <sys/types.h>
cae76441	61	#include <sys/socket.h>
370312ae GH	62	#include <netdb.h>
	63	#include <netinet/in.h>
	64	#include <arpa/inet.h>
	65
7a98cdb9 JB	66	/* Some systems do not declare this. It seems unlikely to produce a
	67	conflict. */
	68	extern int h_errno;
	69
370312ae GH	70	\f
	71
	72	#ifndef STDC_HEADERS
	73	int close ();
	74	#endif /* STDC_HEADERS */
	75
	76	extern int inet_aton ();
	77
	78	SCM_PROC (s_inet_aton, "inet-aton", 1, 0, 0, scm_inet_aton);
	79
	80	SCM
	81	scm_inet_aton (address)
	82	SCM address;
	83	{
	84	struct in_addr soka;
	85
	86	SCM_ASSERT (SCM_NIMP (address) && SCM_ROSTRINGP (address), address, SCM_ARG1, s_inet_aton);
	87	if (SCM_SUBSTRP (address))
	88	address = scm_makfromstr (SCM_ROCHARS (address), SCM_ROLENGTH (address), 0);
	89	if (inet_aton (SCM_ROCHARS (address), &soka) == 0)
	90	scm_syserror (s_inet_aton);
	91	return scm_ulong2num (ntohl (soka.s_addr));
	92	}
	93
	94
	95	SCM_PROC (s_inet_ntoa, "inet-ntoa", 1, 0, 0, scm_inet_ntoa);
	96
	97	SCM
	98	scm_inet_ntoa (inetid)
	99	SCM inetid;
	100	{
	101	struct in_addr addr;
	102	char *s;
	103	SCM answer;
	104	addr.s_addr = htonl (scm_num2ulong (inetid, (char *) SCM_ARG1, s_inet_ntoa));
	105	SCM_DEFER_INTS;
	106	s = inet_ntoa (addr);
	107	answer = scm_makfromstr (s, strlen (s), 0);
	108	SCM_ALLOW_INTS;
	109	return answer;
	110	}
	111
	112	SCM_PROC (s_inet_netof, "inet-netof", 1, 0, 0, scm_inet_netof);
	113
	114	SCM
	115	scm_inet_netof (address)
	116	SCM address;
	117	{
	118	struct in_addr addr;
	119	addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_inet_netof));
	120	return scm_ulong2num ((unsigned long) inet_netof (addr));
	121	}
	122
03bc4386	123	SCM_PROC (s_lnaof, "inet-lnaof", 1, 0, 0, scm_lnaof);
370312ae GH	124
	125	SCM
	126	scm_lnaof (address)
	127	SCM address;
	128	{
	129	struct in_addr addr;
	130	addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_lnaof));
	131	return scm_ulong2num ((unsigned long) inet_lnaof (addr));
	132	}
	133
	134
	135	SCM_PROC (s_inet_makeaddr, "inet-makeaddr", 2, 0, 0, scm_inet_makeaddr);
	136
	137	SCM
	138	scm_inet_makeaddr (net, lna)
	139	SCM net;
	140	SCM lna;
	141	{
	142	struct in_addr addr;
	143	unsigned long netnum;
	144	unsigned long lnanum;
	145
	146	netnum = scm_num2ulong (net, (char *) SCM_ARG1, s_inet_makeaddr);
	147	lnanum = scm_num2ulong (lna, (char *) SCM_ARG2, s_inet_makeaddr);
	148	addr = inet_makeaddr (netnum, lnanum);
	149	return scm_ulong2num (ntohl (addr.s_addr));
	150	}
	151
	152
	153	/* !!! Doesn't take address format.
	154	* Assumes hostent stream isn't reused.
	155	*/
	156
	157	SCM_PROC (s_gethost, "gethost", 0, 1, 0, scm_gethost);
	158
	159	SCM
	160	scm_gethost (name)
	161	SCM name;
	162	{
	163	SCM ans = scm_make_vector (SCM_MAKINUM (5), SCM_UNSPECIFIED, SCM_BOOL_F);
	164	SCM *ve = SCM_VELTS (ans);
	165	SCM lst = SCM_EOL;
	166	struct hostent *entry;
	167	struct in_addr inad;
	168	char **argv;
	169	int i = 0;
370312ae GH	170	if (SCM_UNBNDP (name))
	171	{
	172	SCM_DEFER_INTS;
cd34a384	173	#ifdef HAVE_GETHOSTENT
370312ae	174	entry = gethostent ();
cd34a384 JB	175	#else
	176	entry = NULL;
	177	#endif
370312ae	178	}
ef12d978	179	else if (SCM_NIMP (name) && SCM_ROSTRINGP (name))
370312ae	180	{
89958ad0	181	SCM_COERCE_SUBSTR (name);
370312ae	182	SCM_DEFER_INTS;
ae2fa5bc	183	entry = gethostbyname (SCM_ROCHARS (name));
370312ae GH	184	}
	185	else
	186	{
	187	inad.s_addr = htonl (scm_num2ulong (name, (char *) SCM_ARG1, s_gethost));
	188	SCM_DEFER_INTS;
	189	entry = gethostbyaddr ((char *) &inad, sizeof (inad), AF_INET);
	190	}
	191	SCM_ALLOW_INTS;
	192	if (!entry)
45db98d0 JB	193	{
	194	char *errmsg;
	195	SCM args;
	196	if (SCM_UNBNDP (name))
	197	args = SCM_BOOL_F;
	198	else
	199	args = scm_listify (name, SCM_UNDEFINED);
	200	switch (h_errno)
	201	{
	202	case HOST_NOT_FOUND: errmsg = "host %s not found"; break;
	203	case TRY_AGAIN: errmsg = "nameserver failure (try later)"; break;
	204	case NO_RECOVERY: errmsg = "non-recoverable error"; break;
	205	case NO_DATA: errmsg = "no address associated with %s"; break;
	206	default: errmsg = "undefined error"; break;
	207	}
	208	scm_syserror_msg (s_gethost, errmsg, args, h_errno);
	209	}
370312ae GH	210	ve[0] = scm_makfromstr (entry->h_name, (scm_sizet) strlen (entry->h_name), 0);
	211	ve[1] = scm_makfromstrs (-1, entry->h_aliases);
	212	ve[2] = SCM_MAKINUM (entry->h_addrtype + 0L);
	213	ve[3] = SCM_MAKINUM (entry->h_length + 0L);
	214	if (sizeof (struct in_addr) != entry->h_length)
	215	{
	216	ve[4] = SCM_BOOL_F;
	217	return ans;
	218	}
	219	for (argv = entry->h_addr_list; argv[i]; i++);
	220	while (i--)
	221	{
	222	inad = (struct in_addr ) argv[i];
	223	lst = scm_cons (scm_ulong2num (ntohl (inad.s_addr)), lst);
	224	}
	225	ve[4] = lst;
	226	return ans;
	227	}
	228
	229
	230	SCM_PROC (s_getnet, "getnet", 0, 1, 0, scm_getnet);
	231
	232	SCM
	233	scm_getnet (name)
	234	SCM name;
	235	{
	236	SCM ans;
	237	SCM *ve;
	238	struct netent *entry;
	239
	240	ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F);
	241	ve = SCM_VELTS (ans);
	242	if (SCM_UNBNDP (name))
	243	{
	244	SCM_DEFER_INTS;
	245	entry = getnetent ();
	246	}
ae2fa5bc	247	else if (SCM_NIMP (name) && SCM_ROSTRINGP (name))
370312ae	248	{
89958ad0	249	SCM_COERCE_SUBSTR (name);
370312ae	250	SCM_DEFER_INTS;
ae2fa5bc	251	entry = getnetbyname (SCM_ROCHARS (name));
370312ae GH	252	}
	253	else
	254	{
	255	unsigned long netnum;
	256	netnum = scm_num2ulong (name, (char *) SCM_ARG1, s_getnet);
	257	SCM_DEFER_INTS;
	258	entry = getnetbyaddr (netnum, AF_INET);
	259	}
	260	SCM_ALLOW_INTS;
	261	if (!entry)
45db98d0 JB	262	{
	263	if (SCM_UNBNDP (name))
	264	scm_syserror (s_getnet);
	265	else
	266	scm_syserror_msg (s_getnet, "no such network %s",
	267	scm_listify (name, SCM_UNDEFINED), errno);
	268	}
370312ae GH	269	ve[0] = scm_makfromstr (entry->n_name, (scm_sizet) strlen (entry->n_name), 0);
	270	ve[1] = scm_makfromstrs (-1, entry->n_aliases);
	271	ve[2] = SCM_MAKINUM (entry->n_addrtype + 0L);
	272	ve[3] = scm_ulong2num (entry->n_net + 0L);
	273	return ans;
	274	}
	275
	276	SCM_PROC (s_getproto, "getproto", 0, 1, 0, scm_getproto);
	277
	278	SCM
	279	scm_getproto (name)
	280	SCM name;
	281	{
	282	SCM ans;
	283	SCM *ve;
	284	struct protoent *entry;
	285
	286	ans = scm_make_vector (SCM_MAKINUM (3), SCM_UNSPECIFIED, SCM_BOOL_F);
	287	ve = SCM_VELTS (ans);
	288	if (SCM_UNBNDP (name))
	289	{
	290	SCM_DEFER_INTS;
	291	entry = getprotoent ();
	292	}
ae2fa5bc	293	else if (SCM_NIMP (name) && SCM_ROSTRINGP (name))
370312ae	294	{
89958ad0	295	SCM_COERCE_SUBSTR (name);
370312ae	296	SCM_DEFER_INTS;
ae2fa5bc	297	entry = getprotobyname (SCM_ROCHARS (name));
370312ae GH	298	}
	299	else
	300	{
	301	unsigned long protonum;
	302	protonum = scm_num2ulong (name, (char *) SCM_ARG1, s_getproto);
	303	SCM_DEFER_INTS;
	304	entry = getprotobynumber (protonum);
	305	}
	306	SCM_ALLOW_INTS;
	307	if (!entry)
45db98d0 JB	308	{
	309	if (SCM_UNBNDP (name))
	310	scm_syserror (s_getproto);
	311	else
	312	scm_syserror_msg (s_getproto, "no such protocol %s",
	313	scm_listify (name, SCM_UNDEFINED), errno);
	314	}
370312ae GH	315	ve[0] = scm_makfromstr (entry->p_name, (scm_sizet) strlen (entry->p_name), 0);
	316	ve[1] = scm_makfromstrs (-1, entry->p_aliases);
	317	ve[2] = SCM_MAKINUM (entry->p_proto + 0L);
	318	return ans;
	319	}
	320
	321
	322	static SCM scm_return_entry SCM_P ((struct servent *entry));
	323
	324	static SCM
	325	scm_return_entry (entry)
	326	struct servent *entry;
	327	{
	328	SCM ans;
	329	SCM *ve;
	330
	331	ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F);
	332	ve = SCM_VELTS (ans);
	333	ve[0] = scm_makfromstr (entry->s_name, (scm_sizet) strlen (entry->s_name), 0);
	334	ve[1] = scm_makfromstrs (-1, entry->s_aliases);
	335	ve[2] = SCM_MAKINUM (ntohs (entry->s_port) + 0L);
	336	ve[3] = scm_makfromstr (entry->s_proto, (scm_sizet) strlen (entry->s_proto), 0);
	337	SCM_ALLOW_INTS;
	338	return ans;
	339	}
	340
	341	SCM_PROC (s_getserv, "getserv", 0, 2, 0, scm_getserv);
	342
	343	SCM
	344	scm_getserv (name, proto)
	345	SCM name;
	346	SCM proto;
	347	{
	348	struct servent *entry;
	349	if (SCM_UNBNDP (name))
	350	{
	351	SCM_DEFER_INTS;
	352	entry = getservent ();
	353	if (!entry)
	354	scm_syserror (s_getserv);
65b376c7	355	SCM_ALLOW_INTS;
370312ae GH	356	return scm_return_entry (entry);
370312ae GH	357	}
ae2fa5bc	358	SCM_ASSERT (SCM_NIMP (proto) && SCM_ROSTRINGP (proto), proto, SCM_ARG2, s_getserv);
89958ad0	359	SCM_COERCE_SUBSTR (proto);
ae2fa5bc	360	if (SCM_NIMP (name) && SCM_ROSTRINGP (name))
370312ae	361	{
89958ad0	362	SCM_COERCE_SUBSTR (name);
370312ae	363	SCM_DEFER_INTS;
ae2fa5bc	364	entry = getservbyname (SCM_ROCHARS (name), SCM_ROCHARS (proto));
370312ae GH	365	}
	366	else
	367	{
	368	SCM_ASSERT (SCM_INUMP (name), name, SCM_ARG1, s_getserv);
	369	SCM_DEFER_INTS;
ae2fa5bc	370	entry = getservbyport (htons (SCM_INUM (name)), SCM_ROCHARS (proto));
370312ae GH	371	}
370312ae GH	372	if (!entry)
45db98d0 JB	373	scm_syserror_msg (s_getserv, "no such service %s",
45db98d0 JB	374	scm_listify (name, SCM_UNDEFINED), errno);
65b376c7	375	SCM_ALLOW_INTS;
370312ae GH	376	return scm_return_entry (entry);
	377	}
	378
	379	SCM_PROC (s_sethost, "sethost", 0, 1, 0, scm_sethost);
	380
	381	SCM
	382	scm_sethost (arg)
	383	SCM arg;
	384	{
	385	if (SCM_UNBNDP (arg))
	386	endhostent ();
	387	else
	388	sethostent (SCM_NFALSEP (arg));
	389	return SCM_UNSPECIFIED;
	390	}
	391
	392	SCM_PROC (s_setnet, "setnet", 0, 1, 0, scm_setnet);
	393
	394	SCM
	395	scm_setnet (arg)
	396	SCM arg;
	397	{
	398	if (SCM_UNBNDP (arg))
	399	endnetent ();
	400	else
	401	setnetent (SCM_NFALSEP (arg));
	402	return SCM_UNSPECIFIED;
	403	}
	404
	405	SCM_PROC (s_setproto, "setproto", 0, 1, 0, scm_setproto);
	406
	407	SCM
	408	scm_setproto (arg)
	409	SCM arg;
	410	{
	411	if (SCM_UNBNDP (arg))
	412	endprotoent ();
	413	else
	414	setprotoent (SCM_NFALSEP (arg));
	415	return SCM_UNSPECIFIED;
	416	}
	417
	418	SCM_PROC (s_setserv, "setserv", 0, 1, 0, scm_setserv);
	419
	420	SCM
	421	scm_setserv (arg)
	422	SCM arg;
	423	{
	424	if (SCM_UNBNDP (arg))
	425	endservent ();
	426	else
	427	setservent (SCM_NFALSEP (arg));
	428	return SCM_UNSPECIFIED;
	429	}
	430
	431
	432	void
	433	scm_init_net_db ()
	434	{
	435	#ifdef INADDR_ANY
	436	scm_sysintern ("INADDR_ANY", scm_ulong2num (INADDR_ANY));
	437	#endif
	438	#ifdef INADDR_BROADCAST
	439	scm_sysintern ("INADDR_BROADCAST", scm_ulong2num (INADDR_BROADCAST));
440	#endif
441	#ifdef INADDR_NONE
442	scm_sysintern ("INADDR_NONE", scm_ulong2num (INADDR_NONE));
443	#endif
444	#ifdef INADDR_LOOPBACK
445	scm_sysintern ("INADDR_LOOPBACK", scm_ulong2num (INADDR_LOOPBACK));
446	#endif
447
448	scm_add_feature ("net-db");
449	#include "net_db.x"
450	}
451
452