[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
# if !defined(ultrix) /* Avoid double definition. */
#   include <sys/socket.h>
# endif
# 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
# if defined(__sgi) && !defined(AF_LINK) && defined(PF_LINK) && PF_LINK == AF_LNK
#  undef PF_LINK
# endif
# if defined(I_NETINET_IN) || defined(__ultrix__)
#  include <netinet/in.h>
# endif
# ifdef I_NETDB
#  if !defined(ultrix)  /* Avoid double definition. */
#   include <netdb.h>
#  endif
# 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 != '\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.
	 * This is also more threadsafe than using inet_ntoa(). */
	Newx(addr_str, 4 * 3 + 3 + 1, char); /* IPv6? */
	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)
	SV *	pathname
	CODE:
	{
#ifdef I_SYS_UN
	struct sockaddr_un sun_ad; /* fear using sun */
	STRLEN len;
	char * pathname_pv;

	Zero( &sun_ad, sizeof sun_ad, char );
	sun_ad.sun_family = AF_UNIX;
	pathname_pv = SvPV(pathname,len);
	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_pv[0] != '/' && pathname_pv[0] != '\\')
		croak("Relative UNIX domain socket name '%s' unsupported",
			pathname_pv);
	    else if (len < 8
		     || pathname_pv[7] != '/' && pathname_pv[7] != '\\'
		     || !strnicmp(pathname_pv + 1, "socket", 6))
		off = 7;
	    else
		off = 0;		/* Preserve names starting with \socket\ */
	    Copy( "\\socket", sun_ad.sun_path, off, char);
	    Copy( pathname_pv, 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_pv, 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 = (char*)addr.sun_path;
	/* On Linux, the name of abstract unix domain sockets begins
	 * with a '\0', so allow this. */
	while ((*e || (e == addr.sun_path && e[1] && sockaddrlen > 1))
		&& e < (char*)addr.sun_path + sizeof addr.sun_path)
	    ++e;
	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, e - (char*)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
87edd446	12	# if !defined(ultrix) /* Avoid double definition. */
43db6828	13	# include <sys/socket.h>
43db6828	14	# endif
29209bc5	15	# if defined(USE_SOCKS) && defined(I_SOCKS)
86959918	16	# include <socks.h>
a062834f	17	# endif
9cc6feab	18	# ifdef MPE
	19	# define PF_INET AF_INET
	20	# define PF_UNIX AF_UNIX
	21	# define SOCK_RAW 3
	22	# endif
	23	# ifdef I_SYS_UN
	24	# include <sys/un.h>
	25	# endif
bf9b2f8f	26	/* XXX Configure test for <netinet/in_systm.h needed XXX */
	27	# if defined(NeXT) \|\| defined(__NeXT__)
	28	# include <netinet/in_systm.h>
	29	# endif
3b8fd1d5	30	# if defined(__sgi) && !defined(AF_LINK) && defined(PF_LINK) && PF_LINK == AF_LNK
	31	# undef PF_LINK
	32	# endif
5518ecd4	33	# if defined(I_NETINET_IN) \|\| defined(__ultrix__)
8e07c86e	34	# include <netinet/in.h>
8e07c86e	35	# endif
86959918	36	# ifdef I_NETDB
87edd446	37	# if !defined(ultrix) /* Avoid double definition. */
	38	# include <netdb.h>
	39	# endif
86959918	40	# endif
9cc6feab	41	# ifdef I_ARPA_INET
	42	# include <arpa/inet.h>
	43	# endif
	44	# ifdef I_NETINET_TCP
	45	# include <netinet/tcp.h>
	46	# endif
8e07c86e	47	#else
9cc6feab	48	# include "sockadapt.h"
8e07c86e	49	#endif
a0d0e21e	50
2986a63f	51	#ifdef NETWARE
	52	NETDB_DEFINE_CONTEXT
	53	NETINET_DEFINE_CONTEXT
	54	#endif
	55
6b1016b5	56	#ifdef I_SYSUIO
	57	# include <sys/uio.h>
	58	#endif
	59
a0d0e21e	60	#ifndef AF_NBS
9cc6feab	61	# undef PF_NBS
a0d0e21e	62	#endif
	63
	64	#ifndef AF_X25
9cc6feab	65	# undef PF_X25
a0d0e21e	66	#endif
a0d0e21e	67
8e07c86e	68	#ifndef INADDR_NONE
9cc6feab	69	# define INADDR_NONE 0xffffffff
8e07c86e	70	#endif /* INADDR_NONE */
7e1af8bc	71	#ifndef INADDR_BROADCAST
9cc6feab	72	# define INADDR_BROADCAST 0xffffffff
7e1af8bc	73	#endif /* INADDR_BROADCAST */
8e07c86e	74	#ifndef INADDR_LOOPBACK
9cc6feab	75	# define INADDR_LOOPBACK 0x7F000001
8e07c86e	76	#endif /* INADDR_LOOPBACK */
8e07c86e	77
7e1af8bc	78	#ifndef HAS_INET_ATON
7e1af8bc	79
a062834f	80	/*
7e1af8bc	81	* Check whether "cp" is a valid ascii representation
	82	* of an Internet address and convert to a binary address.
	83	* Returns 1 if the address is valid, 0 if not.
	84	* This replaces inet_addr, the return value from which
	85	* cannot distinguish between failure and a local broadcast address.
	86	*/
	87	static int
f0f333f4	88	my_inet_aton(register const char cp, struct in_addr addr)
7e1af8bc	89	{
c5be433b	90	dTHX;
0caed002	91	register U32 val;
7e1af8bc	92	register int base;
	93	register char c;
	94	int nparts;
	95	const char *s;
	96	unsigned int parts[4];
	97	register unsigned int *pp = parts;
	98
dfb6a7ef	99	if (!cp \|\| !*cp)
0caed002	100	return 0;
7e1af8bc	101	for (;;) {
	102	/*
	103	* Collect number up to ``.''.
	104	* Values are specified as for C:
	105	* 0x=hex, 0=octal, other=decimal.
	106	*/
	107	val = 0; base = 10;
	108	if (*cp == '0') {
	109	if (++cp == 'x' \|\| cp == 'X')
	110	base = 16, cp++;
	111	else
	112	base = 8;
	113	}
	114	while ((c = *cp) != '\0') {
	115	if (isDIGIT(c)) {
	116	val = (val * base) + (c - '0');
	117	cp++;
	118	continue;
	119	}
3280af22	120	if (base == 16 && (s=strchr(PL_hexdigit,c))) {
a062834f	121	val = (val << 4) +
3280af22	122	((s - PL_hexdigit) & 15);
7e1af8bc	123	cp++;
	124	continue;
	125	}
	126	break;
	127	}
	128	if (*cp == '.') {
	129	/*
	130	* Internet format:
	131	* a.b.c.d
	132	* a.b.c (with c treated as 16-bits)
	133	* a.b (with b treated as 24 bits)
	134	*/
	135	if (pp >= parts + 3 \|\| val > 0xff)
	136	return 0;
	137	*pp++ = val, cp++;
	138	} else
	139	break;
	140	}
	141	/*
	142	* Check for trailing characters.
	143	*/
	144	if (cp && !isSPACE(cp))
	145	return 0;
	146	/*
	147	* Concoct the address according to
	148	* the number of parts specified.
	149	*/
	150	nparts = pp - parts + 1; /* force to an int for switch() */
	151	switch (nparts) {
	152
	153	case 1: /* a -- 32 bits */
	154	break;
	155
	156	case 2: /* a.b -- 8.24 bits */
	157	if (val > 0xffffff)
	158	return 0;
	159	val \|= parts[0] << 24;
	160	break;
	161
	162	case 3: /* a.b.c -- 8.8.16 bits */
	163	if (val > 0xffff)
	164	return 0;
	165	val \|= (parts[0] << 24) \| (parts[1] << 16);
	166	break;
	167
	168	case 4: /* a.b.c.d -- 8.8.8.8 bits */
	169	if (val > 0xff)
	170	return 0;
	171	val \|= (parts[0] << 24) \| (parts[1] << 16) \| (parts[2] << 8);
	172	break;
	173	}
	174	addr->s_addr = htonl(val);
	175	return 1;
	176	}
	177
	178	#undef inet_aton
	179	#define inet_aton my_inet_aton
	180
	181	#endif /* ! HAS_INET_ATON */
	182
8e07c86e	183
a0d0e21e	184	static int
f0f333f4	185	not_here(char *s)
a0d0e21e	186	{
	187	croak("Socket::%s not implemented on this architecture", s);
	188	return -1;
	189	}
	190
2528d3bc	191	#define PERL_IN_ADDR_S_ADDR_SIZE 4
	192
	193	/*
	194	* Bad assumptions possible here.
	195	*
	196	* Bad Assumption 1: struct in_addr has no other fields
	197	* than the s_addr (which is the field we care about
	198	* in here, really). However, we can be fed either 4-byte
	199	* addresses (from pack("N", ...), or va.b.c.d, or ...),
	200	* or full struct in_addrs (from e.g. pack_sockaddr_in()),
	201	* which may or may not be 4 bytes in size.
	202	*
	203	* Bad Assumption 2: the s_addr field is a simple type
	204	* (such as an int, u_int32_t). It can be a bit field,
	205	* in which case using & (address-of) on it or taking sizeof()
	206	* wouldn't go over too well. (Those are not attempted
	207	* now but in case someone thinks to change the below code
	208	* to use addr.s_addr instead of addr, you have been warned.)
	209	*
	210	* Bad Assumption 3: the s_addr is the first field in
	211	* an in_addr, or that its bytes are the first bytes in
	212	* an in_addr.
	213	*
	214	* These bad assumptions are wrong in UNICOS which has
	215	* struct in_addr { struct { u_long st_addr:32; } s_da };
	216	* #define s_addr s_da.st_addr
	217	* and u_long is 64 bits.
	218	*
	219	* --jhi */
	220
1cb0fb50	221	#include "const-c.inc"
8e07c86e	222
a0d0e21e	223	MODULE = Socket PACKAGE = Socket
a0d0e21e	224
1cb0fb50	225	INCLUDE: const-xs.inc
8e07c86e	226
	227	void
	228	inet_aton(host)
	229	char * host
	230	CODE:
	231	{
fbf77aee	232	struct in_addr ip_address;
8e07c86e	233	struct hostent * phe;
6e110628	234	int ok = (*host != '\0') && inet_aton(host, &ip_address);
8e07c86e	235
fbf77aee	236	if (!ok && (phe = gethostbyname(host))) {
fbf77aee	237	Copy( phe->h_addr, &ip_address, phe->h_length, char );
7e1af8bc	238	ok = 1;
8e07c86e	239	}
	240
	241	ST(0) = sv_newmortal();
2528d3bc	242	if (ok)
fbf77aee	243	sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
8e07c86e	244	}
8e07c86e	245
	246	void
	247	inet_ntoa(ip_address_sv)
	248	SV * ip_address_sv
	249	CODE:
	250	{
	251	STRLEN addrlen;
	252	struct in_addr addr;
	253	char * addr_str;
1d68b939	254	char * ip_address;
1d68b939	255	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
b2d93eb8	256	croak("Wide character in Socket::inet_ntoa");
f780604f	257	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc	258	if (addrlen == sizeof(addr) \|\| addrlen == 4)
	259	addr.s_addr =
	260	(ip_address[0] & 0xFF) << 24 \|
	261	(ip_address[1] & 0xFF) << 16 \|
	262	(ip_address[2] & 0xFF) << 8 \|
	263	(ip_address[3] & 0xFF);
	264	else
	265	croak("Bad arg length for %s, length is %d, should be %d",
	266	"Socket::inet_ntoa",
	267	addrlen, sizeof(addr));
	268	/* We could use inet_ntoa() but that is broken
	269	* in HP-UX + GCC + 64bitint (returns "0.0.0.0"),
1d88b533	270	* so let's use this sprintf() workaround everywhere.
1d88b533	271	* This is also more threadsafe than using inet_ntoa(). */
a02a5408	272	Newx(addr_str, 4 * 3 + 3 + 1, char); /* IPv6? */
1d68b939	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	280	}
	281
	282	void
2a84dff3	283	sockaddr_family(sockaddr)
	284	SV * sockaddr
	285	PREINIT:
	286	STRLEN sockaddr_len;
f780604f	287	char *sockaddr_pv = SvPVbyte(sockaddr, sockaddr_len);
2a84dff3	288	CODE:
	289	if (sockaddr_len < offsetof(struct sockaddr, sa_data)) {
	290	croak("Bad arg length for %s, length is %d, should be at least %d",
	291	"Socket::sockaddr_family", sockaddr_len,
	292	offsetof(struct sockaddr, sa_data));
	293	}
	294	ST(0) = sv_2mortal(newSViv(((struct sockaddr*)sockaddr_pv)->sa_family));
	295
	296	void
4633a7c4	297	pack_sockaddr_un(pathname)
7513c55b	298	SV * pathname
4633a7c4	299	CODE:
4633a7c4	300	{
25f94b33	301	#ifdef I_SYS_UN
4633a7c4	302	struct sockaddr_un sun_ad; /* fear using sun */
fcdb74fc	303	STRLEN len;
7513c55b	304	char * pathname_pv;
202975e6	305
4633a7c4	306	Zero( &sun_ad, sizeof sun_ad, char );
4633a7c4	307	sun_ad.sun_family = AF_UNIX;
7513c55b	308	pathname_pv = SvPV(pathname,len);
20408e3c	309	if (len > sizeof(sun_ad.sun_path))
20408e3c	310	len = sizeof(sun_ad.sun_path);
202975e6	311	# ifdef OS2 /* Name should start with \socket\ and contain backslashes! */
	312	{
	313	int off;
	314	char s, e;
	315
7513c55b	316	if (pathname_pv[0] != '/' && pathname_pv[0] != '\\')
	317	croak("Relative UNIX domain socket name '%s' unsupported",
	318	pathname_pv);
a062834f	319	else if (len < 8
7513c55b	320	\|\| pathname_pv[7] != '/' && pathname_pv[7] != '\\'
7513c55b	321	\|\| !strnicmp(pathname_pv + 1, "socket", 6))
202975e6	322	off = 7;
	323	else
	324	off = 0; /* Preserve names starting with \socket\ */
	325	Copy( "\\socket", sun_ad.sun_path, off, char);
7513c55b	326	Copy( pathname_pv, sun_ad.sun_path + off, len, char );
202975e6	327
	328	s = sun_ad.sun_path + off - 1;
	329	e = s + len + 1;
	330	while (++s < e)
	331	if (*s = '/')
	332	*s = '\\';
	333	}
a062834f	334	# else /* !( defined OS2 ) */
7513c55b	335	Copy( pathname_pv, sun_ad.sun_path, len, char );
202975e6	336	# endif
a062834f	337	if (0) not_here("dummy");
79cb57f6	338	ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, sizeof sun_ad));
25f94b33	339	#else
	340	ST(0) = (SV *) not_here("pack_sockaddr_un");
	341	#endif
	342
4633a7c4	343	}
	344
	345	void
	346	unpack_sockaddr_un(sun_sv)
	347	SV * sun_sv
f13e1b2f	348	CODE:
4633a7c4	349	{
25f94b33	350	#ifdef I_SYS_UN
4633a7c4	351	struct sockaddr_un addr;
fcdb74fc	352	STRLEN sockaddrlen;
f780604f	353	char * sun_ad = SvPVbyte(sun_sv,sockaddrlen);
fcdb74fc	354	char * e;
36902e12	355	# ifndef __linux__
	356	/* On Linux sockaddrlen on sockets returned by accept, recvfrom,
	357	getpeername and getsockname is not equal to sizeof(addr). */
4633a7c4	358	if (sockaddrlen != sizeof(addr)) {
	359	croak("Bad arg length for %s, length is %d, should be %d",
	360	"Socket::unpack_sockaddr_un",
	361	sockaddrlen, sizeof(addr));
	362	}
36902e12	363	# endif
4633a7c4	364
	365	Copy( sun_ad, &addr, sizeof addr, char );
	366
	367	if ( addr.sun_family != AF_UNIX ) {
	368	croak("Bad address family for %s, got %d, should be %d",
	369	"Socket::unpack_sockaddr_un",
	370	addr.sun_family,
	371	AF_UNIX);
fcdb74fc	372	}
e023fae8	373	e = (char*)addr.sun_path;
7513c55b	374	/* On Linux, the name of abstract unix domain sockets begins
7513c55b	375	* with a '\0', so allow this. */
c0fd1b42	376	while ((*e \|\| (e == addr.sun_path && e[1] && sockaddrlen > 1))
7513c55b	377	&& e < (char*)addr.sun_path + sizeof addr.sun_path)
fcdb74fc	378	++e;
e023fae8	379	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, e - (char*)addr.sun_path));
25f94b33	380	#else
	381	ST(0) = (SV *) not_here("unpack_sockaddr_un");
	382	#endif
4633a7c4	383	}
	384
	385	void
2528d3bc	386	pack_sockaddr_in(port, ip_address_sv)
2c129a17	387	unsigned short port
2528d3bc	388	SV * ip_address_sv
8e07c86e	389	CODE:
	390	{
	391	struct sockaddr_in sin;
2528d3bc	392	struct in_addr addr;
	393	STRLEN addrlen;
	394	char * ip_address;
	395	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
	396	croak("Wide character in Socket::pack_sockaddr_in");
f780604f	397	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc	398	if (addrlen == sizeof(addr) \|\| addrlen == 4)
	399	addr.s_addr =
	400	(ip_address[0] & 0xFF) << 24 \|
	401	(ip_address[1] & 0xFF) << 16 \|
	402	(ip_address[2] & 0xFF) << 8 \|
	403	(ip_address[3] & 0xFF);
	404	else
	405	croak("Bad arg length for %s, length is %d, should be %d",
	406	"Socket::pack_sockaddr_in",
	407	addrlen, sizeof(addr));
8e07c86e	408	Zero( &sin, sizeof sin, char );
4633a7c4	409	sin.sin_family = AF_INET;
8e07c86e	410	sin.sin_port = htons(port);
2528d3bc	411	sin.sin_addr.s_addr = htonl(addr.s_addr);
79cb57f6	412	ST(0) = sv_2mortal(newSVpvn((char *)&sin, sizeof sin));
8e07c86e	413	}
	414
	415	void
	416	unpack_sockaddr_in(sin_sv)
	417	SV * sin_sv
	418	PPCODE:
	419	{
	420	STRLEN sockaddrlen;
	421	struct sockaddr_in addr;
2c129a17	422	unsigned short port;
2528d3bc	423	struct in_addr ip_address;
f780604f	424	char * sin = SvPVbyte(sin_sv,sockaddrlen);
8e07c86e	425	if (sockaddrlen != sizeof(addr)) {
	426	croak("Bad arg length for %s, length is %d, should be %d",
	427	"Socket::unpack_sockaddr_in",
	428	sockaddrlen, sizeof(addr));
	429	}
8e07c86e	430	Copy( sin, &addr,sizeof addr, char );
4633a7c4	431	if ( addr.sin_family != AF_INET ) {
	432	croak("Bad address family for %s, got %d, should be %d",
	433	"Socket::unpack_sockaddr_in",
	434	addr.sin_family,
	435	AF_INET);
a062834f	436	}
8e07c86e	437	port = ntohs(addr.sin_port);
	438	ip_address = addr.sin_addr;
	439
924508f0	440	EXTEND(SP, 2);
2c129a17	441	PUSHs(sv_2mortal(newSViv((IV) port)));
2528d3bc	442	PUSHs(sv_2mortal(newSVpvn((char *)&ip_address, sizeof ip_address)));
8e07c86e	443	}