[p5sagit/p5-mst-13.2.git] / ext / Socket / Socket.xs

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

#include <stddef.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 || !*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;
}

#define PERL_IN_ADDR_S_ADDR_SIZE 4

/*
* 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 been 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 */

#include "const-c.inc"

MODULE = Socket		PACKAGE = Socket

INCLUDE: const-xs.inc

void
inet_aton(host)
	char *	host
	CODE:
	{
	struct in_addr ip_address;
	struct hostent * phe;
	int ok =
		(host != NULL) &&
		(*host != '\0') &&
		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 = SvPVbyte(ip_address_sv, addrlen);
	if (addrlen == sizeof(addr) || addrlen == 4)
	        addr.s_addr =
		    (ip_address[0] & 0xFF) << 24 |
		    (ip_address[1] & 0xFF) << 16 |
		    (ip_address[2] & 0xFF) <<  8 |
		    (ip_address[3] & 0xFF);
	else
	        croak("Bad arg length for %s, length is %d, should be %d",
		      "Socket::inet_ntoa",
		      addrlen, 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
sockaddr_family(sockaddr)
	SV *	sockaddr
	PREINIT:
	STRLEN sockaddr_len;
	char *sockaddr_pv = SvPVbyte(sockaddr, sockaddr_len);
	CODE:
	if (sockaddr_len < offsetof(struct sockaddr, sa_data)) {
	    croak("Bad arg length for %s, length is %d, should be at least %d",
	          "Socket::sockaddr_family", sockaddr_len,
		  offsetof(struct sockaddr, sa_data));
	}
	ST(0) = sv_2mortal(newSViv(((struct sockaddr*)sockaddr_pv)->sa_family));

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 = SvPVbyte(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_sv)
	unsigned short	port
	SV *	ip_address_sv
	CODE:
	{
	struct sockaddr_in sin;
	struct in_addr addr;
	STRLEN addrlen;
	char * ip_address;
	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
	     croak("Wide character in Socket::pack_sockaddr_in");
	ip_address = SvPVbyte(ip_address_sv, addrlen);
	if (addrlen == sizeof(addr) || addrlen == 4)
	        addr.s_addr =
		    (ip_address[0] & 0xFF) << 24 |
		    (ip_address[1] & 0xFF) << 16 |
		    (ip_address[2] & 0xFF) <<  8 |
		    (ip_address[3] & 0xFF);
	else
	        croak("Bad arg length for %s, length is %d, should be %d",
		      "Socket::pack_sockaddr_in",
		      addrlen, sizeof(addr));
	Zero( &sin, sizeof sin, char );
	sin.sin_family = AF_INET;
	sin.sin_port = htons(port);
	sin.sin_addr.s_addr = htonl(addr.s_addr);
	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 = SvPVbyte(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	2	#include "EXTERN.h"
	3	#include "perl.h"
	4	#include "XSUB.h"
	5
fc87b71c	6	#include <stddef.h>
fc87b71c	7
8e07c86e	8	#ifndef VMS
	9	# ifdef I_SYS_TYPES
	10	# include <sys/types.h>
	11	# endif
9cc6feab	12	# include <sys/socket.h>
29209bc5	13	# if defined(USE_SOCKS) && defined(I_SOCKS)
86959918	14	# include <socks.h>
a062834f	15	# endif
9cc6feab	16	# ifdef MPE
	17	# define PF_INET AF_INET
	18	# define PF_UNIX AF_UNIX
	19	# define SOCK_RAW 3
	20	# endif
	21	# ifdef I_SYS_UN
	22	# include <sys/un.h>
	23	# endif
bf9b2f8f	24	/* XXX Configure test for <netinet/in_systm.h needed XXX */
	25	# if defined(NeXT) \|\| defined(__NeXT__)
	26	# include <netinet/in_systm.h>
	27	# endif
8e07c86e	28	# ifdef I_NETINET_IN
	29	# include <netinet/in.h>
	30	# endif
86959918	31	# ifdef I_NETDB
	32	# include <netdb.h>
	33	# endif
9cc6feab	34	# ifdef I_ARPA_INET
	35	# include <arpa/inet.h>
	36	# endif
	37	# ifdef I_NETINET_TCP
	38	# include <netinet/tcp.h>
	39	# endif
8e07c86e	40	#else
9cc6feab	41	# include "sockadapt.h"
8e07c86e	42	#endif
a0d0e21e	43
2986a63f	44	#ifdef NETWARE
	45	NETDB_DEFINE_CONTEXT
	46	NETINET_DEFINE_CONTEXT
	47	#endif
	48
6b1016b5	49	#ifdef I_SYSUIO
	50	# include <sys/uio.h>
	51	#endif
	52
a0d0e21e	53	#ifndef AF_NBS
9cc6feab	54	# undef PF_NBS
a0d0e21e	55	#endif
	56
	57	#ifndef AF_X25
9cc6feab	58	# undef PF_X25
a0d0e21e	59	#endif
a0d0e21e	60
8e07c86e	61	#ifndef INADDR_NONE
9cc6feab	62	# define INADDR_NONE 0xffffffff
8e07c86e	63	#endif /* INADDR_NONE */
7e1af8bc	64	#ifndef INADDR_BROADCAST
9cc6feab	65	# define INADDR_BROADCAST 0xffffffff
7e1af8bc	66	#endif /* INADDR_BROADCAST */
8e07c86e	67	#ifndef INADDR_LOOPBACK
9cc6feab	68	# define INADDR_LOOPBACK 0x7F000001
8e07c86e	69	#endif /* INADDR_LOOPBACK */
8e07c86e	70
7e1af8bc	71	#ifndef HAS_INET_ATON
7e1af8bc	72
a062834f	73	/*
7e1af8bc	74	* Check whether "cp" is a valid ascii representation
	75	* of an Internet address and convert to a binary address.
	76	* Returns 1 if the address is valid, 0 if not.
	77	* This replaces inet_addr, the return value from which
	78	* cannot distinguish between failure and a local broadcast address.
	79	*/
	80	static int
f0f333f4	81	my_inet_aton(register const char cp, struct in_addr addr)
7e1af8bc	82	{
c5be433b	83	dTHX;
0caed002	84	register U32 val;
7e1af8bc	85	register int base;
	86	register char c;
	87	int nparts;
	88	const char *s;
	89	unsigned int parts[4];
	90	register unsigned int *pp = parts;
	91
dfb6a7ef	92	if (!cp \|\| !*cp)
0caed002	93	return 0;
7e1af8bc	94	for (;;) {
	95	/*
	96	* Collect number up to ``.''.
	97	* Values are specified as for C:
	98	* 0x=hex, 0=octal, other=decimal.
	99	*/
	100	val = 0; base = 10;
	101	if (*cp == '0') {
	102	if (++cp == 'x' \|\| cp == 'X')
	103	base = 16, cp++;
	104	else
	105	base = 8;
	106	}
	107	while ((c = *cp) != '\0') {
	108	if (isDIGIT(c)) {
	109	val = (val * base) + (c - '0');
	110	cp++;
	111	continue;
	112	}
3280af22	113	if (base == 16 && (s=strchr(PL_hexdigit,c))) {
a062834f	114	val = (val << 4) +
3280af22	115	((s - PL_hexdigit) & 15);
7e1af8bc	116	cp++;
	117	continue;
	118	}
	119	break;
	120	}
	121	if (*cp == '.') {
	122	/*
	123	* Internet format:
	124	* a.b.c.d
	125	* a.b.c (with c treated as 16-bits)
	126	* a.b (with b treated as 24 bits)
	127	*/
	128	if (pp >= parts + 3 \|\| val > 0xff)
	129	return 0;
	130	*pp++ = val, cp++;
	131	} else
	132	break;
	133	}
	134	/*
	135	* Check for trailing characters.
	136	*/
	137	if (cp && !isSPACE(cp))
	138	return 0;
	139	/*
	140	* Concoct the address according to
	141	* the number of parts specified.
	142	*/
	143	nparts = pp - parts + 1; /* force to an int for switch() */
	144	switch (nparts) {
	145
	146	case 1: /* a -- 32 bits */
	147	break;
	148
	149	case 2: /* a.b -- 8.24 bits */
	150	if (val > 0xffffff)
	151	return 0;
	152	val \|= parts[0] << 24;
	153	break;
	154
	155	case 3: /* a.b.c -- 8.8.16 bits */
	156	if (val > 0xffff)
	157	return 0;
	158	val \|= (parts[0] << 24) \| (parts[1] << 16);
	159	break;
	160
	161	case 4: /* a.b.c.d -- 8.8.8.8 bits */
	162	if (val > 0xff)
	163	return 0;
	164	val \|= (parts[0] << 24) \| (parts[1] << 16) \| (parts[2] << 8);
	165	break;
	166	}
	167	addr->s_addr = htonl(val);
	168	return 1;
	169	}
	170
	171	#undef inet_aton
	172	#define inet_aton my_inet_aton
	173
	174	#endif /* ! HAS_INET_ATON */
	175
8e07c86e	176
a0d0e21e	177	static int
f0f333f4	178	not_here(char *s)
a0d0e21e	179	{
	180	croak("Socket::%s not implemented on this architecture", s);
	181	return -1;
	182	}
	183
2528d3bc	184	#define PERL_IN_ADDR_S_ADDR_SIZE 4
	185
	186	/*
	187	* Bad assumptions possible here.
	188	*
	189	* Bad Assumption 1: struct in_addr has no other fields
	190	* than the s_addr (which is the field we care about
	191	* in here, really). However, we can be fed either 4-byte
	192	* addresses (from pack("N", ...), or va.b.c.d, or ...),
	193	* or full struct in_addrs (from e.g. pack_sockaddr_in()),
	194	* which may or may not be 4 bytes in size.
	195	*
	196	* Bad Assumption 2: the s_addr field is a simple type
	197	* (such as an int, u_int32_t). It can be a bit field,
	198	* in which case using & (address-of) on it or taking sizeof()
	199	* wouldn't go over too well. (Those are not attempted
	200	* now but in case someone thinks to change the below code
	201	* to use addr.s_addr instead of addr, you have been warned.)
	202	*
	203	* Bad Assumption 3: the s_addr is the first field in
	204	* an in_addr, or that its bytes are the first bytes in
	205	* an in_addr.
	206	*
	207	* These bad assumptions are wrong in UNICOS which has
	208	* struct in_addr { struct { u_long st_addr:32; } s_da };
	209	* #define s_addr s_da.st_addr
	210	* and u_long is 64 bits.
	211	*
	212	* --jhi */
	213
1cb0fb50	214	#include "const-c.inc"
8e07c86e	215
a0d0e21e	216	MODULE = Socket PACKAGE = Socket
a0d0e21e	217
1cb0fb50	218	INCLUDE: const-xs.inc
8e07c86e	219
	220	void
	221	inet_aton(host)
	222	char * host
	223	CODE:
	224	{
fbf77aee	225	struct in_addr ip_address;
8e07c86e	226	struct hostent * phe;
64e1b767	227	int ok =
	228	(host != NULL) &&
	229	(*host != '\0') &&
	230	inet_aton(host, &ip_address);
8e07c86e	231
fbf77aee	232	if (!ok && (phe = gethostbyname(host))) {
fbf77aee	233	Copy( phe->h_addr, &ip_address, phe->h_length, char );
7e1af8bc	234	ok = 1;
8e07c86e	235	}
	236
	237	ST(0) = sv_newmortal();
2528d3bc	238	if (ok)
fbf77aee	239	sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
8e07c86e	240	}
8e07c86e	241
	242	void
	243	inet_ntoa(ip_address_sv)
	244	SV * ip_address_sv
	245	CODE:
	246	{
	247	STRLEN addrlen;
	248	struct in_addr addr;
	249	char * addr_str;
1d68b939	250	char * ip_address;
1d68b939	251	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
b2d93eb8	252	croak("Wide character in Socket::inet_ntoa");
f780604f	253	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc	254	if (addrlen == sizeof(addr) \|\| addrlen == 4)
	255	addr.s_addr =
	256	(ip_address[0] & 0xFF) << 24 \|
	257	(ip_address[1] & 0xFF) << 16 \|
	258	(ip_address[2] & 0xFF) << 8 \|
	259	(ip_address[3] & 0xFF);
	260	else
	261	croak("Bad arg length for %s, length is %d, should be %d",
	262	"Socket::inet_ntoa",
	263	addrlen, sizeof(addr));
	264	/* We could use inet_ntoa() but that is broken
	265	* in HP-UX + GCC + 64bitint (returns "0.0.0.0"),
	266	* so let's use this sprintf() workaround everywhere. */
1d68b939	267	New(1138, addr_str, 4 * 3 + 3 + 1, char);
	268	sprintf(addr_str, "%d.%d.%d.%d",
	269	((addr.s_addr >> 24) & 0xFF),
	270	((addr.s_addr >> 16) & 0xFF),
	271	((addr.s_addr >> 8) & 0xFF),
	272	( addr.s_addr & 0xFF));
	273	ST(0) = sv_2mortal(newSVpvn(addr_str, strlen(addr_str)));
	274	Safefree(addr_str);
8e07c86e	275	}
	276
	277	void
2a84dff3	278	sockaddr_family(sockaddr)
	279	SV * sockaddr
	280	PREINIT:
	281	STRLEN sockaddr_len;
f780604f	282	char *sockaddr_pv = SvPVbyte(sockaddr, sockaddr_len);
2a84dff3	283	CODE:
	284	if (sockaddr_len < offsetof(struct sockaddr, sa_data)) {
	285	croak("Bad arg length for %s, length is %d, should be at least %d",
	286	"Socket::sockaddr_family", sockaddr_len,
	287	offsetof(struct sockaddr, sa_data));
	288	}
	289	ST(0) = sv_2mortal(newSViv(((struct sockaddr*)sockaddr_pv)->sa_family));
	290
	291	void
4633a7c4	292	pack_sockaddr_un(pathname)
	293	char * pathname
	294	CODE:
	295	{
25f94b33	296	#ifdef I_SYS_UN
4633a7c4	297	struct sockaddr_un sun_ad; /* fear using sun */
fcdb74fc	298	STRLEN len;
202975e6	299
4633a7c4	300	Zero( &sun_ad, sizeof sun_ad, char );
4633a7c4	301	sun_ad.sun_family = AF_UNIX;
20408e3c	302	len = strlen(pathname);
	303	if (len > sizeof(sun_ad.sun_path))
	304	len = sizeof(sun_ad.sun_path);
202975e6	305	# ifdef OS2 /* Name should start with \socket\ and contain backslashes! */
	306	{
	307	int off;
	308	char s, e;
	309
	310	if (pathname[0] != '/' && pathname[0] != '\\')
	311	croak("Relative UNIX domain socket name '%s' unsupported", pathname);
a062834f	312	else if (len < 8
202975e6	313	\|\| pathname[7] != '/' && pathname[7] != '\\'
	314	\|\| !strnicmp(pathname + 1, "socket", 6))
	315	off = 7;
	316	else
	317	off = 0; /* Preserve names starting with \socket\ */
	318	Copy( "\\socket", sun_ad.sun_path, off, char);
	319	Copy( pathname, sun_ad.sun_path + off, len, char );
	320
	321	s = sun_ad.sun_path + off - 1;
	322	e = s + len + 1;
	323	while (++s < e)
	324	if (*s = '/')
	325	*s = '\\';
	326	}
a062834f	327	# else /* !( defined OS2 ) */
20408e3c	328	Copy( pathname, sun_ad.sun_path, len, char );
202975e6	329	# endif
a062834f	330	if (0) not_here("dummy");
79cb57f6	331	ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, sizeof sun_ad));
25f94b33	332	#else
	333	ST(0) = (SV *) not_here("pack_sockaddr_un");
	334	#endif
	335
4633a7c4	336	}
	337
	338	void
	339	unpack_sockaddr_un(sun_sv)
	340	SV * sun_sv
f13e1b2f	341	CODE:
4633a7c4	342	{
25f94b33	343	#ifdef I_SYS_UN
4633a7c4	344	struct sockaddr_un addr;
fcdb74fc	345	STRLEN sockaddrlen;
f780604f	346	char * sun_ad = SvPVbyte(sun_sv,sockaddrlen);
fcdb74fc	347	char * e;
36902e12	348	# ifndef __linux__
	349	/* On Linux sockaddrlen on sockets returned by accept, recvfrom,
	350	getpeername and getsockname is not equal to sizeof(addr). */
4633a7c4	351	if (sockaddrlen != sizeof(addr)) {
	352	croak("Bad arg length for %s, length is %d, should be %d",
	353	"Socket::unpack_sockaddr_un",
	354	sockaddrlen, sizeof(addr));
	355	}
36902e12	356	# endif
4633a7c4	357
	358	Copy( sun_ad, &addr, sizeof addr, char );
	359
	360	if ( addr.sun_family != AF_UNIX ) {
	361	croak("Bad address family for %s, got %d, should be %d",
	362	"Socket::unpack_sockaddr_un",
	363	addr.sun_family,
	364	AF_UNIX);
fcdb74fc	365	}
	366	e = addr.sun_path;
	367	while (*e && e < addr.sun_path + sizeof addr.sun_path)
	368	++e;
79cb57f6	369	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, e - addr.sun_path));
25f94b33	370	#else
	371	ST(0) = (SV *) not_here("unpack_sockaddr_un");
	372	#endif
4633a7c4	373	}
	374
	375	void
2528d3bc	376	pack_sockaddr_in(port, ip_address_sv)
2c129a17	377	unsigned short port
2528d3bc	378	SV * ip_address_sv
8e07c86e	379	CODE:
	380	{
	381	struct sockaddr_in sin;
2528d3bc	382	struct in_addr addr;
	383	STRLEN addrlen;
	384	char * ip_address;
	385	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
	386	croak("Wide character in Socket::pack_sockaddr_in");
f780604f	387	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc	388	if (addrlen == sizeof(addr) \|\| addrlen == 4)
	389	addr.s_addr =
	390	(ip_address[0] & 0xFF) << 24 \|
	391	(ip_address[1] & 0xFF) << 16 \|
	392	(ip_address[2] & 0xFF) << 8 \|
	393	(ip_address[3] & 0xFF);
	394	else
	395	croak("Bad arg length for %s, length is %d, should be %d",
	396	"Socket::pack_sockaddr_in",
	397	addrlen, sizeof(addr));
8e07c86e	398	Zero( &sin, sizeof sin, char );
4633a7c4	399	sin.sin_family = AF_INET;
8e07c86e	400	sin.sin_port = htons(port);
2528d3bc	401	sin.sin_addr.s_addr = htonl(addr.s_addr);
79cb57f6	402	ST(0) = sv_2mortal(newSVpvn((char *)&sin, sizeof sin));
8e07c86e	403	}
	404
	405	void
	406	unpack_sockaddr_in(sin_sv)
	407	SV * sin_sv
	408	PPCODE:
	409	{
	410	STRLEN sockaddrlen;
	411	struct sockaddr_in addr;
2c129a17	412	unsigned short port;
2528d3bc	413	struct in_addr ip_address;
f780604f	414	char * sin = SvPVbyte(sin_sv,sockaddrlen);
8e07c86e	415	if (sockaddrlen != sizeof(addr)) {
	416	croak("Bad arg length for %s, length is %d, should be %d",
	417	"Socket::unpack_sockaddr_in",
	418	sockaddrlen, sizeof(addr));
	419	}
8e07c86e	420	Copy( sin, &addr,sizeof addr, char );
4633a7c4	421	if ( addr.sin_family != AF_INET ) {
	422	croak("Bad address family for %s, got %d, should be %d",
	423	"Socket::unpack_sockaddr_in",
	424	addr.sin_family,
	425	AF_INET);
a062834f	426	}
8e07c86e	427	port = ntohs(addr.sin_port);
	428	ip_address = addr.sin_addr;
	429
924508f0	430	EXTEND(SP, 2);
2c129a17	431	PUSHs(sv_2mortal(newSViv((IV) port)));
2528d3bc	432	PUSHs(sv_2mortal(newSVpvn((char *)&ip_address, sizeof ip_address)));
8e07c86e	433	}