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/* "socket.c" internet socket support for client/server in SCM
Copyright (C) 1994 Aubrey Jaffer.
Thanks to Hallvard.Tretteberg@si.sintef.no
who credits NCSA httpd software by Rob McCool 3/21/93.
Rewritten by Gary Houston to be a closer interface to the C
socket library.
*/
#include <stdio.h>
#include <string.h>
#include "_scm.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#ifndef STDC_HEADERS
int close P ((int fd));
#endif /* STDC_HEADERS */
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;
int rv;
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);
rv = inet_aton (SCM_ROCHARS (address), &soka);
return rv ? scm_ulong2num (ntohl (soka.s_addr)) : SCM_BOOL_F;
}
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)
return SCM_BOOL_F;
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)
return SCM_BOOL_F;
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)
return SCM_BOOL_F;
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);
if (!entry)
{
SCM_ALLOW_INTS;
return SCM_BOOL_F;
}
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 ();
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));
}
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"
}
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