[perl5.git] / ext / Socket / Socket.xs

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#ifndef VMS
# ifdef I_SYS_TYPES
#  include <sys/types.h>
# endif
# include <sys/socket.h>
# if defined(USE_SOCKS) && defined(I_SOCKS)
#   include <socks.h>
# endif
# ifdef MPE
#  define PF_INET AF_INET
#  define PF_UNIX AF_UNIX
#  define SOCK_RAW 3
# endif
# ifdef I_SYS_UN
#  include <sys/un.h>
# endif
/* XXX Configure test for <netinet/in_systm.h needed XXX */
# if defined(NeXT) || defined(__NeXT__)
#  include <netinet/in_systm.h>
# endif
# ifdef I_NETINET_IN
#  include <netinet/in.h>
# endif
# ifdef I_NETDB
#  include <netdb.h>
# endif
# ifdef I_ARPA_INET
#  include <arpa/inet.h>
# endif
# ifdef I_NETINET_TCP
#  include <netinet/tcp.h>
# endif
#else
# include "sockadapt.h"
#endif

#ifdef NETWARE
NETDB_DEFINE_CONTEXT
NETINET_DEFINE_CONTEXT
#endif

#ifdef I_SYSUIO
# include <sys/uio.h>
#endif

#ifndef AF_NBS
# undef PF_NBS
#endif

#ifndef AF_X25
# undef PF_X25
#endif

#ifndef INADDR_NONE
# define INADDR_NONE	0xffffffff
#endif /* INADDR_NONE */
#ifndef INADDR_BROADCAST
# define INADDR_BROADCAST	0xffffffff
#endif /* INADDR_BROADCAST */
#ifndef INADDR_LOOPBACK
# define INADDR_LOOPBACK         0x7F000001
#endif /* INADDR_LOOPBACK */

#ifndef HAS_INET_ATON

/*
 * Check whether "cp" is a valid ascii representation
 * of an Internet address and convert to a binary address.
 * Returns 1 if the address is valid, 0 if not.
 * This replaces inet_addr, the return value from which
 * cannot distinguish between failure and a local broadcast address.
 */
static int
my_inet_aton(register const char *cp, struct in_addr *addr)
{
	dTHX;
	register U32 val;
	register int base;
	register char c;
	int nparts;
	const char *s;
	unsigned int parts[4];
	register unsigned int *pp = parts;

	if (!cp)
		return 0;
	for (;;) {
		/*
		 * Collect number up to ``.''.
		 * Values are specified as for C:
		 * 0x=hex, 0=octal, other=decimal.
		 */
		val = 0; base = 10;
		if (*cp == '0') {
			if (*++cp == 'x' || *cp == 'X')
				base = 16, cp++;
			else
				base = 8;
		}
		while ((c = *cp) != '\0') {
			if (isDIGIT(c)) {
				val = (val * base) + (c - '0');
				cp++;
				continue;
			}
			if (base == 16 && (s=strchr(PL_hexdigit,c))) {
				val = (val << 4) +
					((s - PL_hexdigit) & 15);
				cp++;
				continue;
			}
			break;
		}
		if (*cp == '.') {
			/*
			 * Internet format:
			 *	a.b.c.d
			 *	a.b.c	(with c treated as 16-bits)
			 *	a.b	(with b treated as 24 bits)
			 */
			if (pp >= parts + 3 || val > 0xff)
				return 0;
			*pp++ = val, cp++;
		} else
			break;
	}
	/*
	 * Check for trailing characters.
	 */
	if (*cp && !isSPACE(*cp))
		return 0;
	/*
	 * Concoct the address according to
	 * the number of parts specified.
	 */
	nparts = pp - parts + 1;	/* force to an int for switch() */
	switch (nparts) {

	case 1:				/* a -- 32 bits */
		break;

	case 2:				/* a.b -- 8.24 bits */
		if (val > 0xffffff)
			return 0;
		val |= parts[0] << 24;
		break;

	case 3:				/* a.b.c -- 8.8.16 bits */
		if (val > 0xffff)
			return 0;
		val |= (parts[0] << 24) | (parts[1] << 16);
		break;

	case 4:				/* a.b.c.d -- 8.8.8.8 bits */
		if (val > 0xff)
			return 0;
		val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
		break;
	}
	addr->s_addr = htonl(val);
	return 1;
}

#undef inet_aton
#define inet_aton my_inet_aton

#endif /* ! HAS_INET_ATON */


static int
not_here(char *s)
{
    croak("Socket::%s not implemented on this architecture", s);
    return -1;
}

#include "constants.c"

MODULE = Socket		PACKAGE = Socket

INCLUDE: constants.xs

void
inet_aton(host)
	char *	host
	CODE:
	{
	struct in_addr ip_address;
	struct hostent * phe;
	int ok = inet_aton(host, &ip_address);

	if (!ok && (phe = gethostbyname(host))) {
		Copy( phe->h_addr, &ip_address, phe->h_length, char );
		ok = 1;
	}

	ST(0) = sv_newmortal();
	if (ok) {
		sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
	}
	}

void
inet_ntoa(ip_address_sv)
	SV *	ip_address_sv
	CODE:
	{
	STRLEN addrlen;
	struct in_addr addr;
	char * addr_str;
	char * ip_address;
	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
	     croak("Wide character in Socket::inet_ntoa");
	ip_address = SvPV(ip_address_sv, addrlen);
	/*
	 * Bad assumptions possible here.
	 *
	 * Bad Assumption 1: struct in_addr has no other fields
	 * than the s_addr (which is the field we care about
	 * in here, really). However, we can be fed either 4-byte
	 * addresses (from pack("N", ...), or va.b.c.d, or ...),
	 * or full struct in_addrs (from e.g. pack_sockaddr_in()),
	 * which may or may not be 4 bytes in size.
	 *
	 * Bad Assumption 2: the s_addr field is a simple type
	 * (such as an int, u_int32_t).  It can be a bit field,
	 * in which case using & (address-of) on it or taking sizeof()
	 * wouldn't go over too well.  (Those are not attempted
	 * now but in case someone thinks to change the below code
	 * to use addr.s_addr instead of addr, you have warned.)
	 *
	 * Bad Assumption 3: the s_addr is the first field in
	 * an in_addr, or that its bytes are the first bytes in
	 * an in_addr.
	 *
	 * These bad assumptions are wrong in UNICOS which has
	 * struct in_addr { struct { u_long  st_addr:32; } s_da };
	 * #define s_addr s_da.st_addr
	 * and u_long is 64 bits.
	 *
	 * --jhi */
#define PERL_IN_ADDR_S_ADDR_SIZE 4
#if INTSIZE == PERL_IN_ADDR_S_ADDR_SIZE
	if (addrlen == PERL_IN_ADDR_S_ADDR_SIZE)
	     addr.s_addr = ntohl(*(int*)ip_address);
	else
#endif
	{
	     /* The following could be optimized away if we knew
	      * during compile time what size is struct in_addr. */
	     if (addrlen == sizeof(addr))
		  Copy( ip_address, &addr, sizeof addr, char );
	     else {
		  if (PERL_IN_ADDR_S_ADDR_SIZE == sizeof(addr))
		       croak("Bad arg length for %s, length is %d, should be %d",
			     "Socket::inet_ntoa",
			     addrlen, PERL_IN_ADDR_S_ADDR_SIZE);
		  else
		       croak("Bad arg length for %s, length is %d, should be %d or %d",
			     "Socket::inet_ntoa",
			     addrlen, PERL_IN_ADDR_S_ADDR_SIZE, sizeof(addr));
	     }
	}
	/* We could use inet_ntoa() but that is broken
	 * in HP-UX + GCC + 64bitint (returns "0.0.0.0"),
	 * so let's use this sprintf() workaround everywhere. */
	New(1138, addr_str, 4 * 3 + 3 + 1, char);
	sprintf(addr_str, "%d.%d.%d.%d",
		((addr.s_addr >> 24) & 0xFF),
		((addr.s_addr >> 16) & 0xFF),
		((addr.s_addr >>  8) & 0xFF),
		( addr.s_addr        & 0xFF));
	ST(0) = sv_2mortal(newSVpvn(addr_str, strlen(addr_str)));
	Safefree(addr_str);
	}

void
pack_sockaddr_un(pathname)
	char *	pathname
	CODE:
	{
#ifdef I_SYS_UN
	struct sockaddr_un sun_ad; /* fear using sun */
	STRLEN len;

	Zero( &sun_ad, sizeof sun_ad, char );
	sun_ad.sun_family = AF_UNIX;
	len = strlen(pathname);
	if (len > sizeof(sun_ad.sun_path))
	    len = sizeof(sun_ad.sun_path);
#  ifdef OS2	/* Name should start with \socket\ and contain backslashes! */
	{
	    int off;
	    char *s, *e;

	    if (pathname[0] != '/' && pathname[0] != '\\')
		croak("Relative UNIX domain socket name '%s' unsupported", pathname);
	    else if (len < 8
		     || pathname[7] != '/' && pathname[7] != '\\'
		     || !strnicmp(pathname + 1, "socket", 6))
		off = 7;
	    else
		off = 0;		/* Preserve names starting with \socket\ */
	    Copy( "\\socket", sun_ad.sun_path, off, char);
	    Copy( pathname, sun_ad.sun_path + off, len, char );

	    s = sun_ad.sun_path + off - 1;
	    e = s + len + 1;
	    while (++s < e)
		if (*s = '/')
		    *s = '\\';
	}
#  else	/* !( defined OS2 ) */
	Copy( pathname, sun_ad.sun_path, len, char );
#  endif
	if (0) not_here("dummy");
	ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, sizeof sun_ad));
#else
	ST(0) = (SV *) not_here("pack_sockaddr_un");
#endif
	
	}

void
unpack_sockaddr_un(sun_sv)
	SV *	sun_sv
	CODE:
	{
#ifdef I_SYS_UN
	struct sockaddr_un addr;
	STRLEN sockaddrlen;
	char * sun_ad = SvPV(sun_sv,sockaddrlen);
	char * e;
#   ifndef __linux__
	/* On Linux sockaddrlen on sockets returned by accept, recvfrom,
	   getpeername and getsockname is not equal to sizeof(addr). */
	if (sockaddrlen != sizeof(addr)) {
	    croak("Bad arg length for %s, length is %d, should be %d",
			"Socket::unpack_sockaddr_un",
			sockaddrlen, sizeof(addr));
	}
#   endif

	Copy( sun_ad, &addr, sizeof addr, char );

	if ( addr.sun_family != AF_UNIX ) {
	    croak("Bad address family for %s, got %d, should be %d",
			"Socket::unpack_sockaddr_un",
			addr.sun_family,
			AF_UNIX);
	}
	e = addr.sun_path;
	while (*e && e < addr.sun_path + sizeof addr.sun_path)
	    ++e;
	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, e - addr.sun_path));
#else
	ST(0) = (SV *) not_here("unpack_sockaddr_un");
#endif
	}

void
pack_sockaddr_in(port,ip_address)
	unsigned short	port
	char *	ip_address
	CODE:
	{
	struct sockaddr_in sin;

	Zero( &sin, sizeof sin, char );
	sin.sin_family = AF_INET;
	sin.sin_port = htons(port);
	Copy( ip_address, &sin.sin_addr, sizeof sin.sin_addr, char );

	ST(0) = sv_2mortal(newSVpvn((char *)&sin, sizeof sin));
	}

void
unpack_sockaddr_in(sin_sv)
	SV *	sin_sv
	PPCODE:
	{
	STRLEN sockaddrlen;
	struct sockaddr_in addr;
	unsigned short	port;
	struct in_addr	ip_address;
	char *	sin = SvPV(sin_sv,sockaddrlen);
	if (sockaddrlen != sizeof(addr)) {
	    croak("Bad arg length for %s, length is %d, should be %d",
			"Socket::unpack_sockaddr_in",
			sockaddrlen, sizeof(addr));
	}
	Copy( sin, &addr,sizeof addr, char );
	if ( addr.sin_family != AF_INET ) {
	    croak("Bad address family for %s, got %d, should be %d",
			"Socket::unpack_sockaddr_in",
			addr.sin_family,
			AF_INET);
	}
	port = ntohs(addr.sin_port);
	ip_address = addr.sin_addr;

	EXTEND(SP, 2);
	PUSHs(sv_2mortal(newSViv((IV) port)));
	PUSHs(sv_2mortal(newSVpvn((char *)&ip_address,sizeof ip_address)));
	}
Commit	Line	Data
c5be433b	1	#define PERL_NO_GET_CONTEXT
a0d0e21e LW	2	#include "EXTERN.h"
	3	#include "perl.h"
	4	#include "XSUB.h"
	5
8e07c86e AD	6	#ifndef VMS
	7	# ifdef I_SYS_TYPES
	8	# include <sys/types.h>
	9	# endif
9cc6feab	10	# include <sys/socket.h>
29209bc5	11	# if defined(USE_SOCKS) && defined(I_SOCKS)
86959918	12	# include <socks.h>
a062834f	13	# endif
9cc6feab JH	14	# ifdef MPE
	15	# define PF_INET AF_INET
	16	# define PF_UNIX AF_UNIX
	17	# define SOCK_RAW 3
	18	# endif
	19	# ifdef I_SYS_UN
	20	# include <sys/un.h>
	21	# endif
bf9b2f8f JH	22	/* XXX Configure test for <netinet/in_systm.h needed XXX */
	23	# if defined(NeXT) \|\| defined(__NeXT__)
	24	# include <netinet/in_systm.h>
	25	# endif
8e07c86e AD	26	# ifdef I_NETINET_IN
	27	# include <netinet/in.h>
	28	# endif
86959918 JH	29	# ifdef I_NETDB
	30	# include <netdb.h>
	31	# endif
9cc6feab JH	32	# ifdef I_ARPA_INET
	33	# include <arpa/inet.h>
	34	# endif
	35	# ifdef I_NETINET_TCP
	36	# include <netinet/tcp.h>
	37	# endif
8e07c86e	38	#else
9cc6feab	39	# include "sockadapt.h"
8e07c86e	40	#endif
a0d0e21e	41
2986a63f JH	42	#ifdef NETWARE
	43	NETDB_DEFINE_CONTEXT
	44	NETINET_DEFINE_CONTEXT
	45	#endif
	46
6b1016b5 JH	47	#ifdef I_SYSUIO
	48	# include <sys/uio.h>
	49	#endif
	50
a0d0e21e	51	#ifndef AF_NBS
9cc6feab	52	# undef PF_NBS
a0d0e21e LW	53	#endif
	54
	55	#ifndef AF_X25
9cc6feab	56	# undef PF_X25
a0d0e21e LW	57	#endif
a0d0e21e LW	58
8e07c86e	59	#ifndef INADDR_NONE
9cc6feab	60	# define INADDR_NONE 0xffffffff
8e07c86e	61	#endif /* INADDR_NONE */
7e1af8bc	62	#ifndef INADDR_BROADCAST
9cc6feab	63	# define INADDR_BROADCAST 0xffffffff
7e1af8bc	64	#endif /* INADDR_BROADCAST */
8e07c86e	65	#ifndef INADDR_LOOPBACK
9cc6feab	66	# define INADDR_LOOPBACK 0x7F000001
8e07c86e AD	67	#endif /* INADDR_LOOPBACK */
8e07c86e AD	68
7e1af8bc	69	#ifndef HAS_INET_ATON
7e1af8bc	70
a062834f	71	/*
7e1af8bc	72	* Check whether "cp" is a valid ascii representation
	73	* of an Internet address and convert to a binary address.
	74	* Returns 1 if the address is valid, 0 if not.
	75	* This replaces inet_addr, the return value from which
	76	* cannot distinguish between failure and a local broadcast address.
	77	*/
	78	static int
f0f333f4	79	my_inet_aton(register const char cp, struct in_addr addr)
7e1af8bc	80	{
c5be433b	81	dTHX;
0caed002	82	register U32 val;
7e1af8bc	83	register int base;
	84	register char c;
	85	int nparts;
	86	const char *s;
	87	unsigned int parts[4];
	88	register unsigned int *pp = parts;
	89
0caed002 CS	90	if (!cp)
0caed002 CS	91	return 0;
7e1af8bc	92	for (;;) {
	93	/*
	94	* Collect number up to ``.''.
	95	* Values are specified as for C:
	96	* 0x=hex, 0=octal, other=decimal.
	97	*/
	98	val = 0; base = 10;
	99	if (*cp == '0') {
	100	if (++cp == 'x' \|\| cp == 'X')
	101	base = 16, cp++;
	102	else
	103	base = 8;
	104	}
	105	while ((c = *cp) != '\0') {
	106	if (isDIGIT(c)) {
	107	val = (val * base) + (c - '0');
	108	cp++;
	109	continue;
	110	}
3280af22	111	if (base == 16 && (s=strchr(PL_hexdigit,c))) {
a062834f	112	val = (val << 4) +
3280af22	113	((s - PL_hexdigit) & 15);
7e1af8bc	114	cp++;
	115	continue;
	116	}
	117	break;
	118	}
	119	if (*cp == '.') {
	120	/*
	121	* Internet format:
	122	* a.b.c.d
	123	* a.b.c (with c treated as 16-bits)
	124	* a.b (with b treated as 24 bits)
	125	*/
	126	if (pp >= parts + 3 \|\| val > 0xff)
	127	return 0;
	128	*pp++ = val, cp++;
	129	} else
	130	break;
	131	}
	132	/*
	133	* Check for trailing characters.
	134	*/
	135	if (cp && !isSPACE(cp))
	136	return 0;
	137	/*
	138	* Concoct the address according to
	139	* the number of parts specified.
	140	*/
	141	nparts = pp - parts + 1; /* force to an int for switch() */
	142	switch (nparts) {
	143
	144	case 1: /* a -- 32 bits */
	145	break;
	146
	147	case 2: /* a.b -- 8.24 bits */
	148	if (val > 0xffffff)
	149	return 0;
	150	val \|= parts[0] << 24;
	151	break;
	152
	153	case 3: /* a.b.c -- 8.8.16 bits */
	154	if (val > 0xffff)
	155	return 0;
	156	val \|= (parts[0] << 24) \| (parts[1] << 16);
	157	break;
	158
	159	case 4: /* a.b.c.d -- 8.8.8.8 bits */
	160	if (val > 0xff)
	161	return 0;
	162	val \|= (parts[0] << 24) \| (parts[1] << 16) \| (parts[2] << 8);
	163	break;
	164	}
	165	addr->s_addr = htonl(val);
	166	return 1;
	167	}
	168
	169	#undef inet_aton
	170	#define inet_aton my_inet_aton
	171
	172	#endif /* ! HAS_INET_ATON */
	173
8e07c86e	174
a0d0e21e	175	static int
f0f333f4	176	not_here(char *s)
a0d0e21e LW	177	{
	178	croak("Socket::%s not implemented on this architecture", s);
	179	return -1;
	180	}
	181
ee96af8f	182	#include "constants.c"
8e07c86e	183
a0d0e21e LW	184	MODULE = Socket PACKAGE = Socket
a0d0e21e LW	185
ee96af8f	186	INCLUDE: constants.xs
8e07c86e AD	187
	188	void
	189	inet_aton(host)
	190	char * host
	191	CODE:
	192	{
	193	struct in_addr ip_address;
	194	struct hostent * phe;
ac9fe1c2	195	int ok = inet_aton(host, &ip_address);
8e07c86e	196
ac9fe1c2	197	if (!ok && (phe = gethostbyname(host))) {
8e07c86e	198	Copy( phe->h_addr, &ip_address, phe->h_length, char );
7e1af8bc	199	ok = 1;
8e07c86e AD	200	}
	201
	202	ST(0) = sv_newmortal();
7e1af8bc	203	if (ok) {
8e07c86e AD	204	sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
	205	}
	206	}
	207
	208	void
	209	inet_ntoa(ip_address_sv)
	210	SV * ip_address_sv
	211	CODE:
	212	{
	213	STRLEN addrlen;
	214	struct in_addr addr;
	215	char * addr_str;
1d68b939 JH	216	char * ip_address;
1d68b939 JH	217	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
b2d93eb8	218	croak("Wide character in Socket::inet_ntoa");
dc26df50 JH	219	ip_address = SvPV(ip_address_sv, addrlen);
	220	/*
	221	* Bad assumptions possible here.
219c81c4	222	*
dc26df50 JH	223	* Bad Assumption 1: struct in_addr has no other fields
	224	* than the s_addr (which is the field we care about
	225	* in here, really). However, we can be fed either 4-byte
	226	* addresses (from pack("N", ...), or va.b.c.d, or ...),
	227	* or full struct in_addrs (from e.g. pack_sockaddr_in()),
	228	* which may or may not be 4 bytes in size.
219c81c4	229	*
dc26df50 JH	230	* Bad Assumption 2: the s_addr field is a simple type
	231	* (such as an int, u_int32_t). It can be a bit field,
	232	* in which case using & (address-of) on it or taking sizeof()
219c81c4	233	* wouldn't go over too well. (Those are not attempted
dc26df50 JH	234	* now but in case someone thinks to change the below code
dc26df50 JH	235	* to use addr.s_addr instead of addr, you have warned.)
219c81c4	236	*
dc26df50 JH	237	* Bad Assumption 3: the s_addr is the first field in
	238	* an in_addr, or that its bytes are the first bytes in
	239	* an in_addr.
219c81c4	240	*
dc26df50 JH	241	* These bad assumptions are wrong in UNICOS which has
	242	* struct in_addr { struct { u_long st_addr:32; } s_da };
	243	* #define s_addr s_da.st_addr
219c81c4 JH	244	* and u_long is 64 bits.
219c81c4 JH	245	*
dc26df50 JH	246	* --jhi */
	247	#define PERL_IN_ADDR_S_ADDR_SIZE 4
	248	#if INTSIZE == PERL_IN_ADDR_S_ADDR_SIZE
	249	if (addrlen == PERL_IN_ADDR_S_ADDR_SIZE)
	250	addr.s_addr = ntohl((int)ip_address);
	251	else
	252	#endif
	253	{
	254	/* The following could be optimized away if we knew
	255	* during compile time what size is struct in_addr. */
	256	if (addrlen == sizeof(addr))
	257	Copy( ip_address, &addr, sizeof addr, char );
	258	else {
	259	if (PERL_IN_ADDR_S_ADDR_SIZE == sizeof(addr))
	260	croak("Bad arg length for %s, length is %d, should be %d",
	261	"Socket::inet_ntoa",
	262	addrlen, PERL_IN_ADDR_S_ADDR_SIZE);
	263	else
	264	croak("Bad arg length for %s, length is %d, should be %d or %d",
	265	"Socket::inet_ntoa",
	266	addrlen, PERL_IN_ADDR_S_ADDR_SIZE, sizeof(addr));
	267	}
8e07c86e	268	}
dc26df50 JH	269	/* We could use inet_ntoa() but that is broken
	270	* in HP-UX + GCC + 64bitint (returns "0.0.0.0"),
	271	* so let's use this sprintf() workaround everywhere. */
1d68b939 JH	272	New(1138, addr_str, 4 * 3 + 3 + 1, char);
	273	sprintf(addr_str, "%d.%d.%d.%d",
	274	((addr.s_addr >> 24) & 0xFF),
	275	((addr.s_addr >> 16) & 0xFF),
	276	((addr.s_addr >> 8) & 0xFF),
	277	( addr.s_addr & 0xFF));
	278	ST(0) = sv_2mortal(newSVpvn(addr_str, strlen(addr_str)));
	279	Safefree(addr_str);
8e07c86e AD	280	}
	281
	282	void
4633a7c4 LW	283	pack_sockaddr_un(pathname)
	284	char * pathname
	285	CODE:
	286	{
25f94b33	287	#ifdef I_SYS_UN
4633a7c4	288	struct sockaddr_un sun_ad; /* fear using sun */
fcdb74fc	289	STRLEN len;
202975e6	290
4633a7c4 LW	291	Zero( &sun_ad, sizeof sun_ad, char );
4633a7c4 LW	292	sun_ad.sun_family = AF_UNIX;
20408e3c GS	293	len = strlen(pathname);
	294	if (len > sizeof(sun_ad.sun_path))
	295	len = sizeof(sun_ad.sun_path);
202975e6 IZ	296	# ifdef OS2 /* Name should start with \socket\ and contain backslashes! */
	297	{
	298	int off;
	299	char s, e;
	300
	301	if (pathname[0] != '/' && pathname[0] != '\\')
	302	croak("Relative UNIX domain socket name '%s' unsupported", pathname);
a062834f	303	else if (len < 8
202975e6 IZ	304	\|\| pathname[7] != '/' && pathname[7] != '\\'
	305	\|\| !strnicmp(pathname + 1, "socket", 6))
	306	off = 7;
	307	else
	308	off = 0; /* Preserve names starting with \socket\ */
	309	Copy( "\\socket", sun_ad.sun_path, off, char);
	310	Copy( pathname, sun_ad.sun_path + off, len, char );
	311
	312	s = sun_ad.sun_path + off - 1;
	313	e = s + len + 1;
	314	while (++s < e)
	315	if (*s = '/')
	316	*s = '\\';
	317	}
a062834f	318	# else /* !( defined OS2 ) */
20408e3c	319	Copy( pathname, sun_ad.sun_path, len, char );
202975e6	320	# endif
a062834f	321	if (0) not_here("dummy");
79cb57f6	322	ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, sizeof sun_ad));
25f94b33 AD	323	#else
	324	ST(0) = (SV *) not_here("pack_sockaddr_un");
	325	#endif
	326
4633a7c4 LW	327	}
	328
	329	void
	330	unpack_sockaddr_un(sun_sv)
	331	SV * sun_sv
f13e1b2f	332	CODE:
4633a7c4	333	{
25f94b33	334	#ifdef I_SYS_UN
4633a7c4	335	struct sockaddr_un addr;
fcdb74fc TB	336	STRLEN sockaddrlen;
	337	char * sun_ad = SvPV(sun_sv,sockaddrlen);
	338	char * e;
36902e12 RG	339	# ifndef __linux__
	340	/* On Linux sockaddrlen on sockets returned by accept, recvfrom,
	341	getpeername and getsockname is not equal to sizeof(addr). */
4633a7c4 LW	342	if (sockaddrlen != sizeof(addr)) {
	343	croak("Bad arg length for %s, length is %d, should be %d",
	344	"Socket::unpack_sockaddr_un",
	345	sockaddrlen, sizeof(addr));
	346	}
36902e12	347	# endif
4633a7c4 LW	348
	349	Copy( sun_ad, &addr, sizeof addr, char );
	350
	351	if ( addr.sun_family != AF_UNIX ) {
	352	croak("Bad address family for %s, got %d, should be %d",
	353	"Socket::unpack_sockaddr_un",
	354	addr.sun_family,
	355	AF_UNIX);
fcdb74fc TB	356	}
	357	e = addr.sun_path;
	358	while (*e && e < addr.sun_path + sizeof addr.sun_path)
	359	++e;
79cb57f6	360	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, e - addr.sun_path));
25f94b33 AD	361	#else
	362	ST(0) = (SV *) not_here("unpack_sockaddr_un");
	363	#endif
4633a7c4 LW	364	}
	365
	366	void
	367	pack_sockaddr_in(port,ip_address)
2c129a17	368	unsigned short port
8e07c86e AD	369	char * ip_address
	370	CODE:
	371	{
	372	struct sockaddr_in sin;
	373
	374	Zero( &sin, sizeof sin, char );
4633a7c4	375	sin.sin_family = AF_INET;
8e07c86e AD	376	sin.sin_port = htons(port);
	377	Copy( ip_address, &sin.sin_addr, sizeof sin.sin_addr, char );
	378
79cb57f6	379	ST(0) = sv_2mortal(newSVpvn((char *)&sin, sizeof sin));
8e07c86e AD	380	}
	381
	382	void
	383	unpack_sockaddr_in(sin_sv)
	384	SV * sin_sv
	385	PPCODE:
	386	{
	387	STRLEN sockaddrlen;
	388	struct sockaddr_in addr;
2c129a17	389	unsigned short port;
8e07c86e AD	390	struct in_addr ip_address;
	391	char * sin = SvPV(sin_sv,sockaddrlen);
	392	if (sockaddrlen != sizeof(addr)) {
	393	croak("Bad arg length for %s, length is %d, should be %d",
	394	"Socket::unpack_sockaddr_in",
	395	sockaddrlen, sizeof(addr));
	396	}
8e07c86e	397	Copy( sin, &addr,sizeof addr, char );
4633a7c4 LW	398	if ( addr.sin_family != AF_INET ) {
	399	croak("Bad address family for %s, got %d, should be %d",
	400	"Socket::unpack_sockaddr_in",
	401	addr.sin_family,
	402	AF_INET);
a062834f	403	}
8e07c86e AD	404	port = ntohs(addr.sin_port);
	405	ip_address = addr.sin_addr;
	406
924508f0	407	EXTEND(SP, 2);
2c129a17	408	PUSHs(sv_2mortal(newSViv((IV) port)));
79cb57f6	409	PUSHs(sv_2mortal(newSVpvn((char *)&ip_address,sizeof ip_address)));
8e07c86e	410	}